annotate src/memfile.c @ 15089:e428882d6ffb v8.1.0555

patch 8.1.0555: crash when last search pat is set but not last substitute pat commit https://github.com/vim/vim/commit/2fb8f684d888ad68b283ba8f9505106b5fb725be Author: Bram Moolenaar <Bram@vim.org> Date: Sat Dec 1 13:14:45 2018 +0100 patch 8.1.0555: crash when last search pat is set but not last substitute pat Problem: Crash when last search pat is set but not last substitute pat. Solution: Do not mix up last search pattern and last subtitute pattern. (closes #3647)
author Bram Moolenaar <Bram@vim.org>
date Sat, 01 Dec 2018 13:15:04 +0100
parents aa9c7588d30a
children 55ccc2d353bd
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1 /* vi:set ts=8 sts=4 sw=4 noet:
7
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9
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10 /*
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11 * memfile.c: Contains the functions for handling blocks of memory which can
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12 * be stored in a file. This is the implementation of a sort of virtual memory.
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13 *
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14 * A memfile consists of a sequence of blocks. The blocks numbered from 0
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15 * upwards have been assigned a place in the actual file. The block number
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16 * is equal to the page number in the file. The
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17 * blocks with negative numbers are currently in memory only. They can be
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18 * assigned a place in the file when too much memory is being used. At that
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19 * moment they get a new, positive, number. A list is used for translation of
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20 * negative to positive numbers.
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21 *
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22 * The size of a block is a multiple of a page size, normally the page size of
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23 * the device the file is on. Most blocks are 1 page long. A Block of multiple
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24 * pages is used for a line that does not fit in a single page.
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25 *
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26 * Each block can be in memory and/or in a file. The block stays in memory
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27 * as long as it is locked. If it is no longer locked it can be swapped out to
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28 * the file. It is only written to the file if it has been changed.
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29 *
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30 * Under normal operation the file is created when opening the memory file and
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31 * deleted when closing the memory file. Only with recovery an existing memory
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32 * file is opened.
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33 */
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34
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35 #include "vim.h"
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36
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37 /*
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38 * Some systems have the page size in statfs.f_bsize, some in stat.st_blksize
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39 */
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40 #ifdef HAVE_ST_BLKSIZE
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41 # define STATFS stat
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42 # define F_BSIZE st_blksize
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43 # define fstatfs(fd, buf, len, nul) mch_fstat((fd), (buf))
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44 #else
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45 # ifdef HAVE_SYS_STATFS_H
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46 # include <sys/statfs.h>
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47 # define STATFS statfs
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48 # define F_BSIZE f_bsize
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49 # ifdef __MINT__ /* do we still need this? */
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50 # define fstatfs(fd, buf, len, nul) mch_fstat((fd), (buf))
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51 # endif
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52 # endif
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53 #endif
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54
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55 /*
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56 * for Amiga Dos 2.0x we use Flush
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57 */
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58 #ifdef AMIGA
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59 # ifdef FEAT_ARP
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60 extern int dos2; /* this is in os_amiga.c */
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61 # endif
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62 # ifdef SASC
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63 # include <proto/dos.h>
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64 # include <ios1.h> /* for chkufb() */
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65 # endif
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66 #endif
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67
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68 #define MEMFILE_PAGE_SIZE 4096 /* default page size */
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69
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70 static long_u total_mem_used = 0; /* total memory used for memfiles */
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71
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72 static void mf_ins_hash(memfile_T *, bhdr_T *);
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73 static void mf_rem_hash(memfile_T *, bhdr_T *);
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74 static bhdr_T *mf_find_hash(memfile_T *, blocknr_T);
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75 static void mf_ins_used(memfile_T *, bhdr_T *);
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76 static void mf_rem_used(memfile_T *, bhdr_T *);
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77 static bhdr_T *mf_release(memfile_T *, int);
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78 static bhdr_T *mf_alloc_bhdr(memfile_T *, int);
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79 static void mf_free_bhdr(bhdr_T *);
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80 static void mf_ins_free(memfile_T *, bhdr_T *);
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81 static bhdr_T *mf_rem_free(memfile_T *);
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82 static int mf_read(memfile_T *, bhdr_T *);
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83 static int mf_write(memfile_T *, bhdr_T *);
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84 static int mf_write_block(memfile_T *mfp, bhdr_T *hp, off_T offset, unsigned size);
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85 static int mf_trans_add(memfile_T *, bhdr_T *);
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86 static void mf_do_open(memfile_T *, char_u *, int);
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87 static void mf_hash_init(mf_hashtab_T *);
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88 static void mf_hash_free(mf_hashtab_T *);
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89 static void mf_hash_free_all(mf_hashtab_T *);
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90 static mf_hashitem_T *mf_hash_find(mf_hashtab_T *, blocknr_T);
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91 static void mf_hash_add_item(mf_hashtab_T *, mf_hashitem_T *);
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92 static void mf_hash_rem_item(mf_hashtab_T *, mf_hashitem_T *);
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93 static int mf_hash_grow(mf_hashtab_T *);
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94
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95 /*
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96 * The functions for using a memfile:
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97 *
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98 * mf_open() open a new or existing memfile
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99 * mf_open_file() open a swap file for an existing memfile
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100 * mf_close() close (and delete) a memfile
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101 * mf_new() create a new block in a memfile and lock it
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102 * mf_get() get an existing block and lock it
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103 * mf_put() unlock a block, may be marked for writing
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104 * mf_free() remove a block
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105 * mf_sync() sync changed parts of memfile to disk
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106 * mf_release_all() release as much memory as possible
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107 * mf_trans_del() may translate negative to positive block number
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108 * mf_fullname() make file name full path (use before first :cd)
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109 */
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110
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111 /*
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112 * Open an existing or new memory block file.
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113 *
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114 * fname: name of file to use (NULL means no file at all)
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115 * Note: fname must have been allocated, it is not copied!
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116 * If opening the file fails, fname is freed.
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117 * flags: flags for open() call
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118 *
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119 * If fname != NULL and file cannot be opened, fail.
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120 *
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121 * return value: identifier for this memory block file.
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122 */
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123 memfile_T *
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124 mf_open(char_u *fname, int flags)
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125 {
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126 memfile_T *mfp;
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127 off_T size;
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128 #if defined(STATFS) && defined(UNIX) && !defined(__QNX__) && !defined(__minix)
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129 # define USE_FSTATFS
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130 struct STATFS stf;
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131 #endif
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132
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133 if ((mfp = (memfile_T *)alloc((unsigned)sizeof(memfile_T))) == NULL)
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134 return NULL;
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135
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136 if (fname == NULL) /* no file for this memfile, use memory only */
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137 {
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138 mfp->mf_fname = NULL;
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139 mfp->mf_ffname = NULL;
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140 mfp->mf_fd = -1;
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141 }
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142 else
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143 {
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144 mf_do_open(mfp, fname, flags); /* try to open the file */
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145
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146 /* if the file cannot be opened, return here */
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147 if (mfp->mf_fd < 0)
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148 {
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149 vim_free(mfp);
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150 return NULL;
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151 }
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152 }
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153
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154 mfp->mf_free_first = NULL; /* free list is empty */
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155 mfp->mf_used_first = NULL; /* used list is empty */
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156 mfp->mf_used_last = NULL;
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157 mfp->mf_dirty = FALSE;
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158 mfp->mf_used_count = 0;
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159 mf_hash_init(&mfp->mf_hash);
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diff changeset
160 mf_hash_init(&mfp->mf_trans);
7
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161 mfp->mf_page_size = MEMFILE_PAGE_SIZE;
2267
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parents: 2249
diff changeset
162 #ifdef FEAT_CRYPT
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parents: 2249
diff changeset
163 mfp->mf_old_key = NULL;
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parents: 2249
diff changeset
164 #endif
7
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165
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166 #ifdef USE_FSTATFS
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167 /*
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168 * Try to set the page size equal to the block size of the device.
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parents:
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169 * Speeds up I/O a lot.
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170 * When recovering, the actual block size will be retrieved from block 0
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171 * in ml_recover(). The size used here may be wrong, therefore
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parents:
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172 * mf_blocknr_max must be rounded up.
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173 */
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174 if (mfp->mf_fd >= 0
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175 && fstatfs(mfp->mf_fd, &stf, sizeof(struct statfs), 0) == 0
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176 && stf.F_BSIZE >= MIN_SWAP_PAGE_SIZE
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177 && stf.F_BSIZE <= MAX_SWAP_PAGE_SIZE)
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178 mfp->mf_page_size = stf.F_BSIZE;
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179 #endif
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180
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181 if (mfp->mf_fd < 0 || (flags & (O_TRUNC|O_EXCL))
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182 || (size = vim_lseek(mfp->mf_fd, (off_T)0L, SEEK_END)) <= 0)
7
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183 mfp->mf_blocknr_max = 0; /* no file or empty file */
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184 else
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185 mfp->mf_blocknr_max = (blocknr_T)((size + mfp->mf_page_size - 1)
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186 / mfp->mf_page_size);
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187 mfp->mf_blocknr_min = -1;
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188 mfp->mf_neg_count = 0;
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189 mfp->mf_infile_count = mfp->mf_blocknr_max;
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190
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191 /*
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192 * Compute maximum number of pages ('maxmem' is in Kbyte):
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193 * 'mammem' * 1Kbyte / page-size-in-bytes.
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194 * Avoid overflow by first reducing page size as much as possible.
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195 */
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196 {
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197 int shift = 10;
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198 unsigned page_size = mfp->mf_page_size;
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199
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200 while (shift > 0 && (page_size & 1) == 0)
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201 {
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202 page_size = page_size >> 1;
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vimboss
parents: 1226
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203 --shift;
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204 }
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205 mfp->mf_used_count_max = (p_mm << shift) / page_size;
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206 if (mfp->mf_used_count_max < 10)
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207 mfp->mf_used_count_max = 10;
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208 }
7
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209
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210 return mfp;
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211 }
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212
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213 /*
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214 * Open a file for an existing memfile. Used when updatecount set from 0 to
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215 * some value.
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216 * If the file already exists, this fails.
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217 * "fname" is the name of file to use (NULL means no file at all)
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218 * Note: "fname" must have been allocated, it is not copied! If opening the
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219 * file fails, "fname" is freed.
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220 *
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221 * return value: FAIL if file could not be opened, OK otherwise
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222 */
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223 int
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224 mf_open_file(memfile_T *mfp, char_u *fname)
7
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225 {
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226 mf_do_open(mfp, fname, O_RDWR|O_CREAT|O_EXCL); /* try to open the file */
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227
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228 if (mfp->mf_fd < 0)
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229 return FAIL;
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230
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231 mfp->mf_dirty = TRUE;
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232 return OK;
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233 }
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234
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235 /*
2249
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Bram Moolenaar <bram@vim.org>
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236 * Close a memory file and delete the associated file if 'del_file' is TRUE.
7
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237 */
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238 void
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239 mf_close(memfile_T *mfp, int del_file)
7
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240 {
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241 bhdr_T *hp, *nextp;
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242
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243 if (mfp == NULL) /* safety check */
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244 return;
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245 if (mfp->mf_fd >= 0)
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246 {
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247 if (close(mfp->mf_fd) < 0)
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248 EMSG(_(e_swapclose));
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249 }
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250 if (del_file && mfp->mf_fname != NULL)
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251 mch_remove(mfp->mf_fname);
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252 /* free entries in used list */
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253 for (hp = mfp->mf_used_first; hp != NULL; hp = nextp)
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254 {
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255 total_mem_used -= hp->bh_page_count * mfp->mf_page_size;
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256 nextp = hp->bh_next;
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257 mf_free_bhdr(hp);
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258 }
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259 while (mfp->mf_free_first != NULL) /* free entries in free list */
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260 vim_free(mf_rem_free(mfp));
2730
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261 mf_hash_free(&mfp->mf_hash);
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262 mf_hash_free_all(&mfp->mf_trans); /* free hashtable and its items */
7
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263 vim_free(mfp->mf_fname);
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diff changeset
264 vim_free(mfp->mf_ffname);
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265 vim_free(mfp);
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266 }
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diff changeset
267
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parents:
diff changeset
268 /*
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parents:
diff changeset
269 * Close the swap file for a memfile. Used when 'swapfile' is reset.
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parents:
diff changeset
270 */
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parents:
diff changeset
271 void
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diff changeset
272 mf_close_file(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents: 7803
diff changeset
273 buf_T *buf,
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parents: 7803
diff changeset
274 int getlines) /* get all lines into memory? */
7
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diff changeset
275 {
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diff changeset
276 memfile_T *mfp;
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277 linenr_T lnum;
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278
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279 mfp = buf->b_ml.ml_mfp;
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280 if (mfp == NULL || mfp->mf_fd < 0) /* nothing to close */
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281 return;
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282
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diff changeset
283 if (getlines)
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284 {
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diff changeset
285 /* get all blocks in memory by accessing all lines (clumsy!) */
1066
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diff changeset
286 mf_dont_release = TRUE;
7
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parents:
diff changeset
287 for (lnum = 1; lnum <= buf->b_ml.ml_line_count; ++lnum)
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288 (void)ml_get_buf(buf, lnum, FALSE);
1066
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diff changeset
289 mf_dont_release = FALSE;
7
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parents:
diff changeset
290 /* TODO: should check if all blocks are really in core */
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vimboss
parents:
diff changeset
291 }
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diff changeset
292
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diff changeset
293 if (close(mfp->mf_fd) < 0) /* close the file */
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diff changeset
294 EMSG(_(e_swapclose));
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diff changeset
295 mfp->mf_fd = -1;
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diff changeset
296
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297 if (mfp->mf_fname != NULL)
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parents:
diff changeset
298 {
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diff changeset
299 mch_remove(mfp->mf_fname); /* delete the swap file */
13244
ac42c4b11dbc patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents: 10359
diff changeset
300 VIM_CLEAR(mfp->mf_fname);
ac42c4b11dbc patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents: 10359
diff changeset
301 VIM_CLEAR(mfp->mf_ffname);
7
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diff changeset
302 }
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vimboss
parents:
diff changeset
303 }
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diff changeset
304
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vimboss
parents:
diff changeset
305 /*
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vimboss
parents:
diff changeset
306 * Set new size for a memfile. Used when block 0 of a swapfile has been read
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vimboss
parents:
diff changeset
307 * and the size it indicates differs from what was guessed.
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vimboss
parents:
diff changeset
308 */
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vimboss
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diff changeset
309 void
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diff changeset
310 mf_new_page_size(memfile_T *mfp, unsigned new_size)
7
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parents:
diff changeset
311 {
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vimboss
parents:
diff changeset
312 /* Correct the memory used for block 0 to the new size, because it will be
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vimboss
parents:
diff changeset
313 * freed with that size later on. */
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diff changeset
314 total_mem_used += new_size - mfp->mf_page_size;
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diff changeset
315 mfp->mf_page_size = new_size;
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vimboss
parents:
diff changeset
316 }
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diff changeset
317
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parents:
diff changeset
318 /*
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vimboss
parents:
diff changeset
319 * get a new block
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parents:
diff changeset
320 *
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diff changeset
321 * negative: TRUE if negative block number desired (data block)
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parents:
diff changeset
322 */
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diff changeset
323 bhdr_T *
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diff changeset
324 mf_new(memfile_T *mfp, int negative, int page_count)
7
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diff changeset
325 {
1166
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326 bhdr_T *hp; /* new bhdr_T */
6eb9fc75ab0b updated for version 7.1a
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diff changeset
327 bhdr_T *freep; /* first block in free list */
6eb9fc75ab0b updated for version 7.1a
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328 char_u *p;
7
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diff changeset
329
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diff changeset
330 /*
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vimboss
parents:
diff changeset
331 * If we reached the maximum size for the used memory blocks, release one
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
332 * If a bhdr_T is returned, use it and adjust the page_count if necessary.
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vimboss
parents:
diff changeset
333 */
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vimboss
parents:
diff changeset
334 hp = mf_release(mfp, page_count);
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diff changeset
335
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diff changeset
336 /*
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vimboss
parents:
diff changeset
337 * Decide on the number to use:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
338 * If there is a free block, use its number.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
339 * Otherwise use mf_block_min for a negative number, mf_block_max for
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
340 * a positive number.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
341 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
342 freep = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
343 if (!negative && freep != NULL && freep->bh_page_count >= page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
344 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
345 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
346 * If the block in the free list has more pages, take only the number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
347 * of pages needed and allocate a new bhdr_T with data
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
348 *
1166
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
349 * If the number of pages matches and mf_release() did not return a
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
350 * bhdr_T, use the bhdr_T from the free list and allocate the data
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
351 *
1166
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
352 * If the number of pages matches and mf_release() returned a bhdr_T,
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
353 * just use the number and free the bhdr_T from the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
354 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
355 if (freep->bh_page_count > page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
356 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
357 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
358 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
359 hp->bh_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
360 freep->bh_bnum += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
361 freep->bh_page_count -= page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
362 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
363 else if (hp == NULL) /* need to allocate memory for this block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
364 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
365 if ((p = (char_u *)alloc(mfp->mf_page_size * page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
366 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
367 hp = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
368 hp->bh_data = p;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
369 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
370 else /* use the number, remove entry from free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
371 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
372 freep = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
373 hp->bh_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
374 vim_free(freep);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
375 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
376 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
377 else /* get a new number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
378 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
379 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
380 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
381 if (negative)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
382 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
383 hp->bh_bnum = mfp->mf_blocknr_min--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
384 mfp->mf_neg_count++;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
385 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
386 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
387 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
388 hp->bh_bnum = mfp->mf_blocknr_max;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
389 mfp->mf_blocknr_max += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
390 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
391 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
392 hp->bh_flags = BH_LOCKED | BH_DIRTY; /* new block is always dirty */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
393 mfp->mf_dirty = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
394 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
395 mf_ins_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
396 mf_ins_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
397
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
398 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
399 * Init the data to all zero, to avoid reading uninitialized data.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
400 * This also avoids that the passwd file ends up in the swap file!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
401 */
2249
6d3d35ff2c2b Use full path in undofile(). Updated docs.
Bram Moolenaar <bram@vim.org>
parents: 2003
diff changeset
402 (void)vim_memset((char *)(hp->bh_data), 0,
6d3d35ff2c2b Use full path in undofile(). Updated docs.
Bram Moolenaar <bram@vim.org>
parents: 2003
diff changeset
403 (size_t)mfp->mf_page_size * page_count);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
404
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
405 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
406 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
407
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
408 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
409 * Get existing block "nr" with "page_count" pages.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
410 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
411 * Note: The caller should first check a negative nr with mf_trans_del()
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
412 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
413 bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
414 mf_get(memfile_T *mfp, blocknr_T nr, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
415 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
416 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
417 /* doesn't exist */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
418 if (nr >= mfp->mf_blocknr_max || nr <= mfp->mf_blocknr_min)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
419 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
420
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
421 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
422 * see if it is in the cache
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
423 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
424 hp = mf_find_hash(mfp, nr);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
425 if (hp == NULL) /* not in the hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
426 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
427 if (nr < 0 || nr >= mfp->mf_infile_count) /* can't be in the file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
428 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
429
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
430 /* could check here if the block is in the free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
431
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
432 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
433 * Check if we need to flush an existing block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
434 * If so, use that block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
435 * If not, allocate a new block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
436 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
437 hp = mf_release(mfp, page_count);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
438 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
439 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
440
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
441 hp->bh_bnum = nr;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
442 hp->bh_flags = 0;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
443 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
444 if (mf_read(mfp, hp) == FAIL) /* cannot read the block! */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
445 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
446 mf_free_bhdr(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
447 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
448 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
449 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
450 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
451 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
452 mf_rem_used(mfp, hp); /* remove from list, insert in front below */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
453 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
454 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
455
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
456 hp->bh_flags |= BH_LOCKED;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
457 mf_ins_used(mfp, hp); /* put in front of used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
458 mf_ins_hash(mfp, hp); /* put in front of hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
459
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
460 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
461 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
462
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
463 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
464 * release the block *hp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
465 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
466 * dirty: Block must be written to file later
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
467 * infile: Block should be in file (needed for recovery)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
468 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
469 * no return value, function cannot fail
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
470 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
471 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
472 mf_put(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
473 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
474 bhdr_T *hp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
475 int dirty,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
476 int infile)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
477 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
478 int flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
479
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
480 flags = hp->bh_flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
481
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
482 if ((flags & BH_LOCKED) == 0)
10359
66f1b5bf3fa6 commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents: 10042
diff changeset
483 IEMSG(_("E293: block was not locked"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
484 flags &= ~BH_LOCKED;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
485 if (dirty)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
486 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
487 flags |= BH_DIRTY;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
488 mfp->mf_dirty = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
489 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
490 hp->bh_flags = flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
491 if (infile)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
492 mf_trans_add(mfp, hp); /* may translate negative in positive nr */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
493 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
494
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
495 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
496 * block *hp is no longer in used, may put it in the free list of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
497 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
498 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
499 mf_free(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
500 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
501 vim_free(hp->bh_data); /* free the memory */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
502 mf_rem_hash(mfp, hp); /* get *hp out of the hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
503 mf_rem_used(mfp, hp); /* get *hp out of the used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
504 if (hp->bh_bnum < 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
505 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
506 vim_free(hp); /* don't want negative numbers in free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
507 mfp->mf_neg_count--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
508 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
509 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
510 mf_ins_free(mfp, hp); /* put *hp in the free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
511 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
512
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
513 #if defined(__MORPHOS__) && defined(__libnix__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
514 /* function is missing in MorphOS libnix version */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
515 extern unsigned long *__stdfiledes;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
516
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
517 static unsigned long
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
518 fdtofh(int filedescriptor)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
519 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
520 return __stdfiledes[filedescriptor];
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
521 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
522 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
523
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
524 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
525 * Sync the memory file *mfp to disk.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
526 * Flags:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
527 * MFS_ALL If not given, blocks with negative numbers are not synced,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
528 * even when they are dirty!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
529 * MFS_STOP Stop syncing when a character becomes available, but sync at
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
530 * least one block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
531 * MFS_FLUSH Make sure buffers are flushed to disk, so they will survive a
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
532 * system crash.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
533 * MFS_ZERO Only write block 0.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
534 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
535 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
536 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
537 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
538 mf_sync(memfile_T *mfp, int flags)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
539 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
540 int status;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
541 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
542 int got_int_save = got_int;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
543
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
544 if (mfp->mf_fd < 0) /* there is no file, nothing to do */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
545 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
546 mfp->mf_dirty = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
547 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
548 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
549
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
550 /* Only a CTRL-C while writing will break us here, not one typed
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
551 * previously. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
552 got_int = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
553
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
554 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
555 * sync from last to first (may reduce the probability of an inconsistent
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
556 * file) If a write fails, it is very likely caused by a full filesystem.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
557 * Then we only try to write blocks within the existing file. If that also
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
558 * fails then we give up.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
559 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
560 status = OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
561 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
562 if (((flags & MFS_ALL) || hp->bh_bnum >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
563 && (hp->bh_flags & BH_DIRTY)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
564 && (status == OK || (hp->bh_bnum >= 0
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
565 && hp->bh_bnum < mfp->mf_infile_count)))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
566 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
567 if ((flags & MFS_ZERO) && hp->bh_bnum != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
568 continue;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
569 if (mf_write(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
570 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
571 if (status == FAIL) /* double error: quit syncing */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
572 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
573 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
574 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
575 if (flags & MFS_STOP)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
576 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
577 /* Stop when char available now. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
578 if (ui_char_avail())
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
579 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
580 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
581 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
582 ui_breakcheck();
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
583 if (got_int)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
584 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
585 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
586
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
587 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
588 * If the whole list is flushed, the memfile is not dirty anymore.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
589 * In case of an error this flag is also set, to avoid trying all the time.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
590 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
591 if (hp == NULL || status == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
592 mfp->mf_dirty = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
593
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
594 if ((flags & MFS_FLUSH) && *p_sws != NUL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
595 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
596 #if defined(UNIX)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
597 # ifdef HAVE_FSYNC
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
598 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
599 * most Unixes have the very useful fsync() function, just what we need.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
600 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
601 if (STRCMP(p_sws, "fsync") == 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
602 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
603 if (fsync(mfp->mf_fd))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
604 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
605 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
606 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
607 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
608 /* OpenNT is strictly POSIX (Benzinger) */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
609 /* Tandem/Himalaya NSK-OSS doesn't have sync() */
6637
a12d422ed16c updated for version 7.4.644
Bram Moolenaar <bram@vim.org>
parents: 5788
diff changeset
610 /* No sync() on Stratus VOS */
a12d422ed16c updated for version 7.4.644
Bram Moolenaar <bram@vim.org>
parents: 5788
diff changeset
611 # if defined(__OPENNT) || defined(__TANDEM) || defined(__VOS__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
612 fflush(NULL);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
613 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
614 sync();
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
615 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
616 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
617 #ifdef VMS
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
618 if (STRCMP(p_sws, "fsync") == 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
619 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
620 if (fsync(mfp->mf_fd))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
621 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
622 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
623 #endif
14822
aa9c7588d30a patch 8.1.0423: MS-Windows: using dup-close for flushing a file
Christian Brabandt <cb@256bit.org>
parents: 13244
diff changeset
624 #ifdef WIN32
aa9c7588d30a patch 8.1.0423: MS-Windows: using dup-close for flushing a file
Christian Brabandt <cb@256bit.org>
parents: 13244
diff changeset
625 if (_commit(mfp->mf_fd))
aa9c7588d30a patch 8.1.0423: MS-Windows: using dup-close for flushing a file
Christian Brabandt <cb@256bit.org>
parents: 13244
diff changeset
626 status = FAIL;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
627 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
628 #ifdef AMIGA
1030
d4bc24e6a281 updated for version 7.0-156
vimboss
parents: 984
diff changeset
629 # if defined(__AROS__) || defined(__amigaos4__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
630 if (fsync(mfp->mf_fd) != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
631 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
632 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
633 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
634 * Flush() only exists for AmigaDos 2.0.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
635 * For 1.3 it should be done with close() + open(), but then the risk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
636 * is that the open() may fail and lose the file....
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
637 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
638 # ifdef FEAT_ARP
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
639 if (dos2)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
640 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
641 # ifdef SASC
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
642 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
643 struct UFB *fp = chkufb(mfp->mf_fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
644
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
645 if (fp != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
646 Flush(fp->ufbfh);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
647 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
648 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
649 # if defined(_DCC) || defined(__GNUC__) || defined(__MORPHOS__)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
650 {
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
651 # if defined(__GNUC__) && !defined(__MORPHOS__) && defined(__libnix__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
652 /* Have function (in libnix at least),
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
653 * but ain't got no prototype anywhere. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
654 extern unsigned long fdtofh(int filedescriptor);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
655 # endif
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
656 # if !defined(__libnix__)
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
657 fflush(NULL);
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
658 # else
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
659 BPTR fh = (BPTR)fdtofh(mfp->mf_fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
660
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
661 if (fh != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
662 Flush(fh);
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
663 # endif
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
664 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
665 # else /* assume Manx */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
666 Flush(_devtab[mfp->mf_fd].fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
667 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
668 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
669 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
670 #endif /* AMIGA */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
671 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
672
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
673 got_int |= got_int_save;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
674
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
675 return status;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
676 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
677
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
678 /*
630
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
679 * For all blocks in memory file *mfp that have a positive block number set
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
680 * the dirty flag. These are blocks that need to be written to a newly
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
681 * created swapfile.
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
682 */
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
683 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
684 mf_set_dirty(memfile_T *mfp)
630
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
685 {
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
686 bhdr_T *hp;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
687
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
688 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
689 if (hp->bh_bnum > 0)
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
690 hp->bh_flags |= BH_DIRTY;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
691 mfp->mf_dirty = TRUE;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
692 }
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
693
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
694 /*
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
695 * insert block *hp in front of hashlist of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
696 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
697 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
698 mf_ins_hash(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
699 {
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
700 mf_hash_add_item(&mfp->mf_hash, (mf_hashitem_T *)hp);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
701 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
702
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
703 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
704 * remove block *hp from hashlist of memfile list *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
705 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
706 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
707 mf_rem_hash(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
708 {
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
709 mf_hash_rem_item(&mfp->mf_hash, (mf_hashitem_T *)hp);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
710 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
711
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
712 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
713 * look in hash lists of memfile *mfp for block header with number 'nr'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
714 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
715 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
716 mf_find_hash(memfile_T *mfp, blocknr_T nr)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
717 {
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
718 return (bhdr_T *)mf_hash_find(&mfp->mf_hash, nr);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
719 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
720
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
721 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
722 * insert block *hp in front of used list of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
723 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
724 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
725 mf_ins_used(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
726 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
727 hp->bh_next = mfp->mf_used_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
728 mfp->mf_used_first = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
729 hp->bh_prev = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
730 if (hp->bh_next == NULL) /* list was empty, adjust last pointer */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
731 mfp->mf_used_last = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
732 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
733 hp->bh_next->bh_prev = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
734 mfp->mf_used_count += hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
735 total_mem_used += hp->bh_page_count * mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
736 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
737
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
738 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
739 * remove block *hp from used list of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
740 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
741 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
742 mf_rem_used(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
743 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
744 if (hp->bh_next == NULL) /* last block in used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
745 mfp->mf_used_last = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
746 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
747 hp->bh_next->bh_prev = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
748 if (hp->bh_prev == NULL) /* first block in used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
749 mfp->mf_used_first = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
750 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
751 hp->bh_prev->bh_next = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
752 mfp->mf_used_count -= hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
753 total_mem_used -= hp->bh_page_count * mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
754 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
755
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
756 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
757 * Release the least recently used block from the used list if the number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
758 * of used memory blocks gets to big.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
759 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
760 * Return the block header to the caller, including the memory block, so
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
761 * it can be re-used. Make sure the page_count is right.
6817
cd47def2214a patch 7.4.730
Bram Moolenaar <bram@vim.org>
parents: 6637
diff changeset
762 *
cd47def2214a patch 7.4.730
Bram Moolenaar <bram@vim.org>
parents: 6637
diff changeset
763 * Returns NULL if no block is released.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
764 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
765 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
766 mf_release(memfile_T *mfp, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
767 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
768 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
769 int need_release;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
770 buf_T *buf;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
771
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
772 /* don't release while in mf_close_file() */
1066
bffbbb566d6b updated for version 7.0-192
vimboss
parents: 1033
diff changeset
773 if (mf_dont_release)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
774 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
775
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
776 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
777 * Need to release a block if the number of blocks for this memfile is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
778 * higher than the maximum or total memory used is over 'maxmemtot'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
779 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
780 need_release = ((mfp->mf_used_count >= mfp->mf_used_count_max)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
781 || (total_mem_used >> 10) >= (long_u)p_mmt);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
782
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
783 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
784 * Try to create a swap file if the amount of memory used is getting too
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
785 * high.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
786 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
787 if (mfp->mf_fd < 0 && need_release && p_uc)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
788 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
789 /* find for which buffer this memfile is */
9649
fd9727ae3c49 commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
Christian Brabandt <cb@256bit.org>
parents: 9536
diff changeset
790 FOR_ALL_BUFFERS(buf)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
791 if (buf->b_ml.ml_mfp == mfp)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
792 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
793 if (buf != NULL && buf->b_may_swap)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
794 ml_open_file(buf);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
795 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
796
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
797 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
798 * don't release a block if
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
799 * there is no file for this memfile
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
800 * or
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
801 * the number of blocks for this memfile is lower than the maximum
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
802 * and
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
803 * total memory used is not up to 'maxmemtot'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
804 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
805 if (mfp->mf_fd < 0 || !need_release)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
806 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
807
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
808 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
809 if (!(hp->bh_flags & BH_LOCKED))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
810 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
811 if (hp == NULL) /* not a single one that can be released */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
812 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
813
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
814 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
815 * If the block is dirty, write it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
816 * If the write fails we don't free it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
817 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
818 if ((hp->bh_flags & BH_DIRTY) && mf_write(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
819 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
820
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
821 mf_rem_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
822 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
823
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
824 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
825 * If a bhdr_T is returned, make sure that the page_count of bh_data is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
826 * right
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
827 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
828 if (hp->bh_page_count != page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
829 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
830 vim_free(hp->bh_data);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
831 if ((hp->bh_data = alloc(mfp->mf_page_size * page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
832 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
833 vim_free(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
834 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
835 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
836 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
837 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
838 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
839 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
840
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
841 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
842 * release as many blocks as possible
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
843 * Used in case of out of memory
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
844 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
845 * return TRUE if any memory was released
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
846 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
847 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
848 mf_release_all(void)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
849 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
850 buf_T *buf;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
851 memfile_T *mfp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
852 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
853 int retval = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
854
9649
fd9727ae3c49 commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
Christian Brabandt <cb@256bit.org>
parents: 9536
diff changeset
855 FOR_ALL_BUFFERS(buf)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
856 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
857 mfp = buf->b_ml.ml_mfp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
858 if (mfp != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
859 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
860 /* If no swap file yet, may open one */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
861 if (mfp->mf_fd < 0 && buf->b_may_swap)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
862 ml_open_file(buf);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
863
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
864 /* only if there is a swapfile */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
865 if (mfp->mf_fd >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
866 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
867 for (hp = mfp->mf_used_last; hp != NULL; )
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
868 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
869 if (!(hp->bh_flags & BH_LOCKED)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
870 && (!(hp->bh_flags & BH_DIRTY)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
871 || mf_write(mfp, hp) != FAIL))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
872 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
873 mf_rem_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
874 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
875 mf_free_bhdr(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
876 hp = mfp->mf_used_last; /* re-start, list was changed */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
877 retval = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
878 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
879 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
880 hp = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
881 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
882 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
883 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
884 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
885 return retval;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
886 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
887
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
888 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
889 * Allocate a block header and a block of memory for it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
890 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
891 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
892 mf_alloc_bhdr(memfile_T *mfp, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
893 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
894 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
895
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
896 if ((hp = (bhdr_T *)alloc((unsigned)sizeof(bhdr_T))) != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
897 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
898 if ((hp->bh_data = (char_u *)alloc(mfp->mf_page_size * page_count))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
899 == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
900 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
901 vim_free(hp); /* not enough memory */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
902 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
903 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
904 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
905 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
906 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
907 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
908
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
909 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
910 * Free a block header and the block of memory for it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
911 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
912 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
913 mf_free_bhdr(bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
914 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
915 vim_free(hp->bh_data);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
916 vim_free(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
917 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
918
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
919 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
920 * insert entry *hp in the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
921 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
922 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
923 mf_ins_free(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
924 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
925 hp->bh_next = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
926 mfp->mf_free_first = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
927 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
928
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
929 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
930 * remove the first entry from the free list and return a pointer to it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
931 * Note: caller must check that mfp->mf_free_first is not NULL!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
932 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
933 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
934 mf_rem_free(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
935 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
936 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
937
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
938 hp = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
939 mfp->mf_free_first = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
940 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
941 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
942
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
943 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
944 * read a block from disk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
945 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
946 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
947 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
948 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
949 mf_read(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
950 {
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
951 off_T offset;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
952 unsigned page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
953 unsigned size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
954
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
955 if (mfp->mf_fd < 0) /* there is no file, can't read */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
956 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
957
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
958 page_size = mfp->mf_page_size;
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
959 offset = (off_T)page_size * hp->bh_bnum;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
960 size = page_size * hp->bh_page_count;
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
961 if (vim_lseek(mfp->mf_fd, offset, SEEK_SET) != offset)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
962 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
963 PERROR(_("E294: Seek error in swap file read"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
964 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
965 }
2664
033e7b49356c updated for version 7.3.083
Bram Moolenaar <bram@vim.org>
parents: 2267
diff changeset
966 if ((unsigned)read_eintr(mfp->mf_fd, hp->bh_data, size) != size)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
967 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
968 PERROR(_("E295: Read error in swap file"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
969 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
970 }
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
971
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
972 #ifdef FEAT_CRYPT
7347
8977b399cf55 commit https://github.com/vim/vim/commit/4a8c2cfc56b9affc36934aa0f20d8cfd2b1511c8
Christian Brabandt <cb@256bit.org>
parents: 6817
diff changeset
973 /* Decrypt if 'key' is set and this is a data block. And when changing the
8977b399cf55 commit https://github.com/vim/vim/commit/4a8c2cfc56b9affc36934aa0f20d8cfd2b1511c8
Christian Brabandt <cb@256bit.org>
parents: 6817
diff changeset
974 * key. */
8977b399cf55 commit https://github.com/vim/vim/commit/4a8c2cfc56b9affc36934aa0f20d8cfd2b1511c8
Christian Brabandt <cb@256bit.org>
parents: 6817
diff changeset
975 if (*mfp->mf_buffer->b_p_key != NUL || mfp->mf_old_key != NULL)
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
976 ml_decrypt_data(mfp, hp->bh_data, offset, size);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
977 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
978
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
979 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
980 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
981
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
982 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
983 * write a block to disk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
984 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
985 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
986 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
987 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
988 mf_write(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
989 {
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
990 off_T offset; /* offset in the file */
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
991 blocknr_T nr; /* block nr which is being written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
992 bhdr_T *hp2;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
993 unsigned page_size; /* number of bytes in a page */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
994 unsigned page_count; /* number of pages written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
995 unsigned size; /* number of bytes written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
996
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
997 if (mfp->mf_fd < 0) /* there is no file, can't write */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
998 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
999
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1000 if (hp->bh_bnum < 0) /* must assign file block number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1001 if (mf_trans_add(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1002 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1003
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1004 page_size = mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1005
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1006 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1007 * We don't want gaps in the file. Write the blocks in front of *hp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1008 * to extend the file.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1009 * If block 'mf_infile_count' is not in the hash list, it has been
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1010 * freed. Fill the space in the file with data from the current block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1011 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1012 for (;;)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1013 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1014 nr = hp->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1015 if (nr > mfp->mf_infile_count) /* beyond end of file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1016 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1017 nr = mfp->mf_infile_count;
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1018 hp2 = mf_find_hash(mfp, nr); /* NULL caught below */
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1019 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1020 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1021 hp2 = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1022
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
1023 offset = (off_T)page_size * nr;
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
1024 if (vim_lseek(mfp->mf_fd, offset, SEEK_SET) != offset)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1025 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
1026 PERROR(_("E296: Seek error in swap file write"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1027 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1028 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1029 if (hp2 == NULL) /* freed block, fill with dummy data */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1030 page_count = 1;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1031 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1032 page_count = hp2->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1033 size = page_size * page_count;
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1034 if (mf_write_block(mfp, hp2 == NULL ? hp : hp2, offset, size) == FAIL)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1035 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1036 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1037 * Avoid repeating the error message, this mostly happens when the
1226
a49d06539452 updated for version 7.1b
vimboss
parents: 1166
diff changeset
1038 * disk is full. We give the message again only after a successful
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1039 * write or when hitting a key. We keep on trying, in case some
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1040 * space becomes available.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1041 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1042 if (!did_swapwrite_msg)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1043 EMSG(_("E297: Write error in swap file"));
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1044 did_swapwrite_msg = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1045 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1046 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1047 did_swapwrite_msg = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1048 if (hp2 != NULL) /* written a non-dummy block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1049 hp2->bh_flags &= ~BH_DIRTY;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1050 /* appended to the file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1051 if (nr + (blocknr_T)page_count > mfp->mf_infile_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1052 mfp->mf_infile_count = nr + page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1053 if (nr == hp->bh_bnum) /* written the desired block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1054 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1055 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1056 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1057 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1058
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1059 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1060 * Write block "hp" with data size "size" to file "mfp->mf_fd".
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1061 * Takes care of encryption.
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1062 * Return FAIL or OK.
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1063 */
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1064 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1065 mf_write_block(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1066 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1067 bhdr_T *hp,
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
1068 off_T offset UNUSED,
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1069 unsigned size)
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1070 {
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1071 char_u *data = hp->bh_data;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1072 int result = OK;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1073
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1074 #ifdef FEAT_CRYPT
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1075 /* Encrypt if 'key' is set and this is a data block. */
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1076 if (*mfp->mf_buffer->b_p_key != NUL)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1077 {
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1078 data = ml_encrypt_data(mfp, data, offset, size);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1079 if (data == NULL)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1080 return FAIL;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1081 }
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1082 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1083
2664
033e7b49356c updated for version 7.3.083
Bram Moolenaar <bram@vim.org>
parents: 2267
diff changeset
1084 if ((unsigned)write_eintr(mfp->mf_fd, data, size) != size)
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1085 result = FAIL;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1086
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1087 #ifdef FEAT_CRYPT
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1088 if (data != hp->bh_data)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1089 vim_free(data);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1090 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1091
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1092 return result;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1093 }
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1094
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1095 /*
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1096 * Make block number for *hp positive and add it to the translation list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1097 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1098 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1099 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1100 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1101 mf_trans_add(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1102 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1103 bhdr_T *freep;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1104 blocknr_T new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1105 NR_TRANS *np;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1106 int page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1107
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1108 if (hp->bh_bnum >= 0) /* it's already positive */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1109 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1110
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1111 if ((np = (NR_TRANS *)alloc((unsigned)sizeof(NR_TRANS))) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1112 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1113
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1114 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1115 * Get a new number for the block.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1116 * If the first item in the free list has sufficient pages, use its number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1117 * Otherwise use mf_blocknr_max.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1118 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1119 freep = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1120 page_count = hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1121 if (freep != NULL && freep->bh_page_count >= page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1122 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1123 new_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1124 /*
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1125 * If the page count of the free block was larger, reduce it.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1126 * If the page count matches, remove the block from the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1127 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1128 if (freep->bh_page_count > page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1129 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1130 freep->bh_bnum += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1131 freep->bh_page_count -= page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1132 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1133 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1134 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1135 freep = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1136 vim_free(freep);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1137 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1138 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1139 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1140 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1141 new_bnum = mfp->mf_blocknr_max;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1142 mfp->mf_blocknr_max += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1143 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1144
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1145 np->nt_old_bnum = hp->bh_bnum; /* adjust number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1146 np->nt_new_bnum = new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1147
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1148 mf_rem_hash(mfp, hp); /* remove from old hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1149 hp->bh_bnum = new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1150 mf_ins_hash(mfp, hp); /* insert in new hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1151
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1152 /* Insert "np" into "mf_trans" hashtable with key "np->nt_old_bnum" */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1153 mf_hash_add_item(&mfp->mf_trans, (mf_hashitem_T *)np);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1154
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1155 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1156 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1157
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1158 /*
6817
cd47def2214a patch 7.4.730
Bram Moolenaar <bram@vim.org>
parents: 6637
diff changeset
1159 * Lookup a translation from the trans lists and delete the entry.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1160 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1161 * Return the positive new number when found, the old number when not found
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1162 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1163 blocknr_T
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1164 mf_trans_del(memfile_T *mfp, blocknr_T old_nr)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1165 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1166 NR_TRANS *np;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1167 blocknr_T new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1168
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1169 np = (NR_TRANS *)mf_hash_find(&mfp->mf_trans, old_nr);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1170
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1171 if (np == NULL) /* not found */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1172 return old_nr;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1173
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1174 mfp->mf_neg_count--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1175 new_bnum = np->nt_new_bnum;
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1176
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1177 /* remove entry from the trans list */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1178 mf_hash_rem_item(&mfp->mf_trans, (mf_hashitem_T *)np);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1179
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1180 vim_free(np);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1181
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1182 return new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1183 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1184
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1185 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1186 * Set mfp->mf_ffname according to mfp->mf_fname and some other things.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1187 * Only called when creating or renaming the swapfile. Either way it's a new
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1188 * name so we must work out the full path name.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1189 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1190 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1191 mf_set_ffname(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1192 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1193 mfp->mf_ffname = FullName_save(mfp->mf_fname, FALSE);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1194 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1195
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1196 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1197 * Make the name of the file used for the memfile a full path.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1198 * Used before doing a :cd
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1199 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1200 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1201 mf_fullname(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1202 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1203 if (mfp != NULL && mfp->mf_fname != NULL && mfp->mf_ffname != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1204 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1205 vim_free(mfp->mf_fname);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1206 mfp->mf_fname = mfp->mf_ffname;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1207 mfp->mf_ffname = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1208 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1209 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1210
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1211 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1212 * return TRUE if there are any translations pending for 'mfp'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1213 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1214 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1215 mf_need_trans(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1216 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1217 return (mfp->mf_fname != NULL && mfp->mf_neg_count > 0);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1218 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1219
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1220 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1221 * Open a swap file for a memfile.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1222 * The "fname" must be in allocated memory, and is consumed (also when an
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1223 * error occurs).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1224 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1225 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1226 mf_do_open(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1227 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1228 char_u *fname,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1229 int flags) /* flags for open() */
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1230 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1231 #ifdef HAVE_LSTAT
9387
f094d4085014 commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents: 8212
diff changeset
1232 stat_T sb;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1233 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1234
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1235 mfp->mf_fname = fname;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1236
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1237 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1238 * Get the full path name before the open, because this is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1239 * not possible after the open on the Amiga.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1240 * fname cannot be NameBuff, because it must have been allocated.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1241 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1242 mf_set_ffname(mfp);
8212
05b88224cea1 commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents: 7961
diff changeset
1243 #if defined(MSWIN)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1244 /*
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1245 * A ":!cd e:xxx" may change the directory without us knowing, use the
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1246 * full pathname always. Careful: This frees fname!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1247 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1248 mf_fullname(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1249 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1250
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1251 #ifdef HAVE_LSTAT
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1252 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1253 * Extra security check: When creating a swap file it really shouldn't
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1254 * exist yet. If there is a symbolic link, this is most likely an attack.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1255 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1256 if ((flags & O_CREAT) && mch_lstat((char *)mfp->mf_fname, &sb) >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1257 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1258 mfp->mf_fd = -1;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1259 EMSG(_("E300: Swap file already exists (symlink attack?)"));
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1260 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1261 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1262 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1263 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1264 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1265 * try to open the file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1266 */
557
862863033fdd updated for version 7.0158
vimboss
parents: 7
diff changeset
1267 flags |= O_EXTRA | O_NOFOLLOW;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1268 #ifdef WIN32
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1269 /* Prevent handle inheritance that cause problems with Cscope
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1270 * (swap file may not be deleted if cscope connection was open after
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1271 * the file) */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1272 flags |= O_NOINHERIT;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1273 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1274 mfp->mf_fd = mch_open_rw((char *)mfp->mf_fname, flags);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1275 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1276
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1277 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1278 * If the file cannot be opened, use memory only
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1279 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1280 if (mfp->mf_fd < 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1281 {
13244
ac42c4b11dbc patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents: 10359
diff changeset
1282 VIM_CLEAR(mfp->mf_fname);
ac42c4b11dbc patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents: 10359
diff changeset
1283 VIM_CLEAR(mfp->mf_ffname);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1284 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1285 else
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1286 {
2003
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1287 #ifdef HAVE_FD_CLOEXEC
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1288 int fdflags = fcntl(mfp->mf_fd, F_GETFD);
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1289 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0)
7961
a7e58c6e4e9a commit https://github.com/vim/vim/commit/fbc4b4db3a9690906a96e16724350a6241cf32a5
Christian Brabandt <cb@256bit.org>
parents: 7827
diff changeset
1290 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC);
2003
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1291 #endif
5788
410ef4f1a3d2 updated for version 7.4.238
Bram Moolenaar <bram@vim.org>
parents: 4519
diff changeset
1292 #if defined(HAVE_SELINUX) || defined(HAVE_SMACK)
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1293 mch_copy_sec(fname, mfp->mf_fname);
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1294 #endif
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1295 mch_hide(mfp->mf_fname); /* try setting the 'hidden' flag */
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1296 }
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1297 }
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1298
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1299 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1300 * Implementation of mf_hashtab_T follows.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1301 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1302
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1303 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1304 * The number of buckets in the hashtable is increased by a factor of
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1305 * MHT_GROWTH_FACTOR when the average number of items per bucket
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1306 * exceeds 2 ^ MHT_LOG_LOAD_FACTOR.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1307 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1308 #define MHT_LOG_LOAD_FACTOR 6
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1309 #define MHT_GROWTH_FACTOR 2 /* must be a power of two */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1310
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1311 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1312 * Initialize an empty hash table.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1313 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1314 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1315 mf_hash_init(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1316 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1317 vim_memset(mht, 0, sizeof(mf_hashtab_T));
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1318 mht->mht_buckets = mht->mht_small_buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1319 mht->mht_mask = MHT_INIT_SIZE - 1;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1320 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1321
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1322 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1323 * Free the array of a hash table. Does not free the items it contains!
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1324 * The hash table must not be used again without another mf_hash_init() call.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1325 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1326 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1327 mf_hash_free(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1328 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1329 if (mht->mht_buckets != mht->mht_small_buckets)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1330 vim_free(mht->mht_buckets);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1331 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1332
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1333 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1334 * Free the array of a hash table and all the items it contains.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1335 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1336 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1337 mf_hash_free_all(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1338 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1339 long_u idx;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1340 mf_hashitem_T *mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1341 mf_hashitem_T *next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1342
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1343 for (idx = 0; idx <= mht->mht_mask; idx++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1344 for (mhi = mht->mht_buckets[idx]; mhi != NULL; mhi = next)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1345 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1346 next = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1347 vim_free(mhi);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1348 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1349
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1350 mf_hash_free(mht);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1351 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1352
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1353 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1354 * Find "key" in hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1355 * Returns a pointer to a mf_hashitem_T or NULL if the item was not found.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1356 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1357 static mf_hashitem_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1358 mf_hash_find(mf_hashtab_T *mht, blocknr_T key)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1359 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1360 mf_hashitem_T *mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1361
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1362 mhi = mht->mht_buckets[key & mht->mht_mask];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1363 while (mhi != NULL && mhi->mhi_key != key)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1364 mhi = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1365
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1366 return mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1367 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1368
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1369 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1370 * Add item "mhi" to hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1371 * "mhi" must not be NULL.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1372 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1373 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1374 mf_hash_add_item(mf_hashtab_T *mht, mf_hashitem_T *mhi)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1375 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1376 long_u idx;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1377
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1378 idx = mhi->mhi_key & mht->mht_mask;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1379 mhi->mhi_next = mht->mht_buckets[idx];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1380 mhi->mhi_prev = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1381 if (mhi->mhi_next != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1382 mhi->mhi_next->mhi_prev = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1383 mht->mht_buckets[idx] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1384
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1385 mht->mht_count++;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1386
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1387 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1388 * Grow hashtable when we have more thank 2^MHT_LOG_LOAD_FACTOR
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1389 * items per bucket on average
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1390 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1391 if (mht->mht_fixed == 0
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1392 && (mht->mht_count >> MHT_LOG_LOAD_FACTOR) > mht->mht_mask)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1393 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1394 if (mf_hash_grow(mht) == FAIL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1395 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1396 /* stop trying to grow after first failure to allocate memory */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1397 mht->mht_fixed = 1;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1398 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1399 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1400 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1401
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1402 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1403 * Remove item "mhi" from hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1404 * "mhi" must not be NULL and must have been inserted into "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1405 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1406 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1407 mf_hash_rem_item(mf_hashtab_T *mht, mf_hashitem_T *mhi)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1408 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1409 if (mhi->mhi_prev == NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1410 mht->mht_buckets[mhi->mhi_key & mht->mht_mask] = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1411 else
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1412 mhi->mhi_prev->mhi_next = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1413
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1414 if (mhi->mhi_next != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1415 mhi->mhi_next->mhi_prev = mhi->mhi_prev;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1416
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1417 mht->mht_count--;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1418
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1419 /* We could shrink the table here, but it typically takes little memory,
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1420 * so why bother? */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1421 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1422
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1423 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1424 * Increase number of buckets in the hashtable by MHT_GROWTH_FACTOR and
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1425 * rehash items.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1426 * Returns FAIL when out of memory.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1427 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1428 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1429 mf_hash_grow(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1430 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1431 long_u i, j;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1432 int shift;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1433 mf_hashitem_T *mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1434 mf_hashitem_T *tails[MHT_GROWTH_FACTOR];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1435 mf_hashitem_T **buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1436 size_t size;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1437
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1438 size = (mht->mht_mask + 1) * MHT_GROWTH_FACTOR * sizeof(void *);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1439 buckets = (mf_hashitem_T **)lalloc_clear(size, FALSE);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1440 if (buckets == NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1441 return FAIL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1442
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1443 shift = 0;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1444 while ((mht->mht_mask >> shift) != 0)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1445 shift++;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1446
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1447 for (i = 0; i <= mht->mht_mask; i++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1448 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1449 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1450 * Traverse the items in the i-th original bucket and move them into
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1451 * MHT_GROWTH_FACTOR new buckets, preserving their relative order
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1452 * within each new bucket. Preserving the order is important because
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1453 * mf_get() tries to keep most recently used items at the front of
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1454 * each bucket.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1455 *
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1456 * Here we strongly rely on the fact the hashes are computed modulo
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1457 * a power of two.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1458 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1459
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1460 vim_memset(tails, 0, sizeof(tails));
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1461
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1462 for (mhi = mht->mht_buckets[i]; mhi != NULL; mhi = mhi->mhi_next)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1463 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1464 j = (mhi->mhi_key >> shift) & (MHT_GROWTH_FACTOR - 1);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1465 if (tails[j] == NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1466 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1467 buckets[i + (j << shift)] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1468 tails[j] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1469 mhi->mhi_prev = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1470 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1471 else
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1472 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1473 tails[j]->mhi_next = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1474 mhi->mhi_prev = tails[j];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1475 tails[j] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1476 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1477 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1478
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1479 for (j = 0; j < MHT_GROWTH_FACTOR; j++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1480 if (tails[j] != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1481 tails[j]->mhi_next = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1482 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1483
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1484 if (mht->mht_buckets != mht->mht_small_buckets)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1485 vim_free(mht->mht_buckets);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1486
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1487 mht->mht_buckets = buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1488 mht->mht_mask = (mht->mht_mask + 1) * MHT_GROWTH_FACTOR - 1;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1489
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1490 return OK;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1491 }