annotate src/memfile.c @ 9250:d82724272c61 v7.4.1908

commit https://github.com/vim/vim/commit/5ce4a0b96ab688b1ea2481c2516e2889ff6713bf Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jun 8 20:17:23 2016 +0200 patch 7.4.1908 Problem: Netbeans uses uninitialzed pointer and freed memory. Solution: Set "buffer" at the right place (hint by Ken Takata)
author Christian Brabandt <cb@256bit.org>
date Wed, 08 Jun 2016 20:30:06 +0200
parents 05b88224cea1
children f094d4085014
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7
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1 /* vi:set ts=8 sts=4 sw=4:
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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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160 mf_hash_init(&mfp->mf_trans);
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161 mfp->mf_page_size = MEMFILE_PAGE_SIZE;
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162 #ifdef FEAT_CRYPT
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163 mfp->mf_old_key = NULL;
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164 #endif
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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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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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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 = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0)
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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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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 }
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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 /*
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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));
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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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264 vim_free(mfp->mf_ffname);
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265 vim_free(mfp);
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266 }
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267
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268 /*
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269 * Close the swap file for a memfile. Used when 'swapfile' is reset.
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270 */
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271 void
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272 mf_close_file(
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273 buf_T *buf,
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274 int getlines) /* get all lines into memory? */
7
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275 {
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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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283 if (getlines)
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284 {
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285 /* get all blocks in memory by accessing all lines (clumsy!) */
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286 mf_dont_release = TRUE;
7
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287 for (lnum = 1; lnum <= buf->b_ml.ml_line_count; ++lnum)
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288 (void)ml_get_buf(buf, lnum, FALSE);
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289 mf_dont_release = FALSE;
7
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290 /* TODO: should check if all blocks are really in core */
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291 }
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292
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293 if (close(mfp->mf_fd) < 0) /* close the file */
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294 EMSG(_(e_swapclose));
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295 mfp->mf_fd = -1;
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296
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297 if (mfp->mf_fname != NULL)
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298 {
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299 mch_remove(mfp->mf_fname); /* delete the swap file */
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300 vim_free(mfp->mf_fname);
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301 vim_free(mfp->mf_ffname);
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302 mfp->mf_fname = NULL;
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303 mfp->mf_ffname = NULL;
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diff changeset
304 }
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305 }
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306
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307 /*
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parents:
diff changeset
308 * Set new size for a memfile. Used when block 0 of a swapfile has been read
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309 * and the size it indicates differs from what was guessed.
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310 */
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311 void
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312 mf_new_page_size(memfile_T *mfp, unsigned new_size)
7
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313 {
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314 /* Correct the memory used for block 0 to the new size, because it will be
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315 * freed with that size later on. */
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316 total_mem_used += new_size - mfp->mf_page_size;
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317 mfp->mf_page_size = new_size;
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318 }
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319
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diff changeset
320 /*
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parents:
diff changeset
321 * get a new block
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322 *
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323 * negative: TRUE if negative block number desired (data block)
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324 */
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325 bhdr_T *
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326 mf_new(memfile_T *mfp, int negative, int page_count)
7
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327 {
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328 bhdr_T *hp; /* new bhdr_T */
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329 bhdr_T *freep; /* first block in free list */
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330 char_u *p;
7
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331
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332 /*
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diff changeset
333 * If we reached the maximum size for the used memory blocks, release one
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diff changeset
334 * If a bhdr_T is returned, use it and adjust the page_count if necessary.
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parents:
diff changeset
335 */
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336 hp = mf_release(mfp, page_count);
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337
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338 /*
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339 * Decide on the number to use:
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340 * If there is a free block, use its number.
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341 * Otherwise use mf_block_min for a negative number, mf_block_max for
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diff changeset
342 * a positive number.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
343 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
344 freep = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
345 if (!negative && freep != NULL && freep->bh_page_count >= page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
346 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
347 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
348 * If the block in the free list has more pages, take only the number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
349 * of pages needed and allocate a new bhdr_T with data
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
350 *
1166
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
351 * If the number of pages matches and mf_release() did not return a
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
352 * 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
353 *
1166
6eb9fc75ab0b updated for version 7.1a
vimboss
parents: 1066
diff changeset
354 * If the number of pages matches and mf_release() returned a bhdr_T,
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
355 * just use the number and free the bhdr_T from the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
356 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
357 if (freep->bh_page_count > page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
358 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
359 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
360 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
361 hp->bh_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
362 freep->bh_bnum += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
363 freep->bh_page_count -= page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
364 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
365 else if (hp == NULL) /* need to allocate memory for this block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
366 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
367 if ((p = (char_u *)alloc(mfp->mf_page_size * page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
368 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
369 hp = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
370 hp->bh_data = p;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
371 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
372 else /* use the number, remove entry from free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
373 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
374 freep = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
375 hp->bh_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
376 vim_free(freep);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
377 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
378 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
379 else /* get a new number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
380 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
381 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
382 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
383 if (negative)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
384 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
385 hp->bh_bnum = mfp->mf_blocknr_min--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
386 mfp->mf_neg_count++;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
387 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
388 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
389 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
390 hp->bh_bnum = mfp->mf_blocknr_max;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
391 mfp->mf_blocknr_max += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
392 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
393 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
394 hp->bh_flags = BH_LOCKED | BH_DIRTY; /* new block is always dirty */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
395 mfp->mf_dirty = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
396 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
397 mf_ins_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
398 mf_ins_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
399
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
400 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
401 * Init the data to all zero, to avoid reading uninitialized data.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
402 * This also avoids that the passwd file ends up in the swap file!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
403 */
2249
6d3d35ff2c2b Use full path in undofile(). Updated docs.
Bram Moolenaar <bram@vim.org>
parents: 2003
diff changeset
404 (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
405 (size_t)mfp->mf_page_size * page_count);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
406
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
407 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
408 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
409
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
410 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
411 * Get existing block "nr" with "page_count" pages.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
412 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
413 * Note: The caller should first check a negative nr with mf_trans_del()
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
414 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
415 bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
416 mf_get(memfile_T *mfp, blocknr_T nr, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
417 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
418 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
419 /* doesn't exist */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
420 if (nr >= mfp->mf_blocknr_max || nr <= mfp->mf_blocknr_min)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
421 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
422
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
423 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
424 * see if it is in the cache
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
425 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
426 hp = mf_find_hash(mfp, nr);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
427 if (hp == NULL) /* not in the hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
428 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
429 if (nr < 0 || nr >= mfp->mf_infile_count) /* can't be in the file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
430 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
431
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
432 /* could check here if the block is in the free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
433
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
434 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
435 * Check if we need to flush an existing block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
436 * If so, use that block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
437 * If not, allocate a new block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
438 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
439 hp = mf_release(mfp, page_count);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
440 if (hp == NULL && (hp = mf_alloc_bhdr(mfp, page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
441 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
442
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
443 hp->bh_bnum = nr;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
444 hp->bh_flags = 0;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
445 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
446 if (mf_read(mfp, hp) == FAIL) /* cannot read the block! */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
447 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
448 mf_free_bhdr(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
449 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
450 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
451 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
452 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
453 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
454 mf_rem_used(mfp, hp); /* remove from list, insert in front below */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
455 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
456 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
457
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
458 hp->bh_flags |= BH_LOCKED;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
459 mf_ins_used(mfp, hp); /* put in front of used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
460 mf_ins_hash(mfp, hp); /* put in front of hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
461
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
462 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
463 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
464
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
465 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
466 * release the block *hp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
467 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
468 * dirty: Block must be written to file later
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
469 * infile: Block should be in file (needed for recovery)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
470 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
471 * no return value, function cannot fail
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
472 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
473 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
474 mf_put(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
475 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
476 bhdr_T *hp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
477 int dirty,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
478 int infile)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
479 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
480 int flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
481
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
482 flags = hp->bh_flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
483
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
484 if ((flags & BH_LOCKED) == 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
485 EMSG(_("E293: block was not locked"));
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
486 flags &= ~BH_LOCKED;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
487 if (dirty)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
488 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
489 flags |= BH_DIRTY;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
490 mfp->mf_dirty = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
491 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
492 hp->bh_flags = flags;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
493 if (infile)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
494 mf_trans_add(mfp, hp); /* may translate negative in positive nr */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
495 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
496
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
497 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
498 * 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
499 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
500 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
501 mf_free(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
502 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
503 vim_free(hp->bh_data); /* free the memory */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
504 mf_rem_hash(mfp, hp); /* get *hp out of the hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
505 mf_rem_used(mfp, hp); /* get *hp out of the used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
506 if (hp->bh_bnum < 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
507 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
508 vim_free(hp); /* don't want negative numbers in free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
509 mfp->mf_neg_count--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
510 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
511 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
512 mf_ins_free(mfp, hp); /* put *hp in the free list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
513 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
514
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
515 #if defined(__MORPHOS__) && defined(__libnix__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
516 /* function is missing in MorphOS libnix version */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
517 extern unsigned long *__stdfiledes;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
518
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
519 static unsigned long
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
520 fdtofh(int filedescriptor)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
521 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
522 return __stdfiledes[filedescriptor];
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
523 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
524 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
525
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
526 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
527 * Sync the memory file *mfp to disk.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
528 * Flags:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
529 * MFS_ALL If not given, blocks with negative numbers are not synced,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
530 * even when they are dirty!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
531 * MFS_STOP Stop syncing when a character becomes available, but sync at
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
532 * least one block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
533 * MFS_FLUSH Make sure buffers are flushed to disk, so they will survive a
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
534 * system crash.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
535 * MFS_ZERO Only write block 0.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
536 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
537 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
538 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
539 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
540 mf_sync(memfile_T *mfp, int flags)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
541 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
542 int status;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
543 bhdr_T *hp;
8212
05b88224cea1 commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents: 7961
diff changeset
544 #if defined(SYNC_DUP_CLOSE)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
545 int fd;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
546 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
547 int got_int_save = got_int;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
548
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
549 if (mfp->mf_fd < 0) /* there is no file, nothing to do */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
550 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
551 mfp->mf_dirty = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
552 return FAIL;
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 /* Only a CTRL-C while writing will break us here, not one typed
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
556 * previously. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
557 got_int = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
558
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
559 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
560 * sync from last to first (may reduce the probability of an inconsistent
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
561 * file) If a write fails, it is very likely caused by a full filesystem.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
562 * Then we only try to write blocks within the existing file. If that also
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
563 * fails then we give up.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
564 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
565 status = OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
566 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
567 if (((flags & MFS_ALL) || hp->bh_bnum >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
568 && (hp->bh_flags & BH_DIRTY)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
569 && (status == OK || (hp->bh_bnum >= 0
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
570 && hp->bh_bnum < mfp->mf_infile_count)))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
571 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
572 if ((flags & MFS_ZERO) && hp->bh_bnum != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
573 continue;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
574 if (mf_write(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
575 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
576 if (status == FAIL) /* double error: quit syncing */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
577 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
578 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
579 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
580 if (flags & MFS_STOP)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
581 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
582 /* Stop when char available now. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
583 if (ui_char_avail())
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 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
587 ui_breakcheck();
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
588 if (got_int)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
589 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
590 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
591
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
592 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
593 * If the whole list is flushed, the memfile is not dirty anymore.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
594 * 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
595 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
596 if (hp == NULL || status == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
597 mfp->mf_dirty = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
598
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
599 if ((flags & MFS_FLUSH) && *p_sws != NUL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
600 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
601 #if defined(UNIX)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
602 # ifdef HAVE_FSYNC
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
603 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
604 * most Unixes have the very useful fsync() function, just what we need.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
605 * However, with OS/2 and EMX it is also available, but there are
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
606 * reports of bad problems with it (a bug in HPFS.IFS).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
607 * So we disable use of it here in case someone tries to be smart
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
608 * and changes os_os2_cfg.h... (even though there is no __EMX__ test
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
609 * in the #if, as __EMX__ does not have sync(); we hope for a timely
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
610 * sync from the system itself).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
611 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
612 # if defined(__EMX__)
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
613 error "Don't use fsync with EMX! Read emxdoc.doc or emxfix01.doc for info."
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
614 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
615 if (STRCMP(p_sws, "fsync") == 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
616 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
617 if (fsync(mfp->mf_fd))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
618 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
619 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
620 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
621 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
622 /* OpenNT is strictly POSIX (Benzinger) */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
623 /* 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
624 /* No sync() on Stratus VOS */
a12d422ed16c updated for version 7.4.644
Bram Moolenaar <bram@vim.org>
parents: 5788
diff changeset
625 # if defined(__OPENNT) || defined(__TANDEM) || defined(__VOS__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
626 fflush(NULL);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
627 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
628 sync();
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
629 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
630 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
631 #ifdef VMS
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
632 if (STRCMP(p_sws, "fsync") == 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
633 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
634 if (fsync(mfp->mf_fd))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
635 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
636 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
637 #endif
8212
05b88224cea1 commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents: 7961
diff changeset
638 #ifdef SYNC_DUP_CLOSE
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
639 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
640 * Win32 is a bit more work: Duplicate the file handle and close it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
641 * This should flush the file to disk.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
642 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
643 if ((fd = dup(mfp->mf_fd)) >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
644 close(fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
645 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
646 #ifdef AMIGA
1030
d4bc24e6a281 updated for version 7.0-156
vimboss
parents: 984
diff changeset
647 # if defined(__AROS__) || defined(__amigaos4__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
648 if (fsync(mfp->mf_fd) != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
649 status = FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
650 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
651 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
652 * Flush() only exists for AmigaDos 2.0.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
653 * For 1.3 it should be done with close() + open(), but then the risk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
654 * is that the open() may fail and lose the file....
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
655 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
656 # ifdef FEAT_ARP
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
657 if (dos2)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
658 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
659 # ifdef SASC
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
660 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
661 struct UFB *fp = chkufb(mfp->mf_fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
662
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
663 if (fp != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
664 Flush(fp->ufbfh);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
665 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
666 # else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
667 # if defined(_DCC) || defined(__GNUC__) || defined(__MORPHOS__)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
668 {
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
669 # if defined(__GNUC__) && !defined(__MORPHOS__) && defined(__libnix__)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
670 /* Have function (in libnix at least),
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
671 * but ain't got no prototype anywhere. */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
672 extern unsigned long fdtofh(int filedescriptor);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
673 # endif
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
674 # if !defined(__libnix__)
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
675 fflush(NULL);
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
676 # else
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
677 BPTR fh = (BPTR)fdtofh(mfp->mf_fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
678
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
679 if (fh != 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
680 Flush(fh);
984
fa9ee618000f updated for version 7.0-110
vimboss
parents: 714
diff changeset
681 # endif
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
682 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
683 # else /* assume Manx */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
684 Flush(_devtab[mfp->mf_fd].fd);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
685 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
686 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
687 # endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
688 #endif /* AMIGA */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
689 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
690
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
691 got_int |= got_int_save;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
692
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
693 return status;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
694 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
695
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
696 /*
630
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
697 * 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
698 * 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
699 * created swapfile.
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
700 */
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
701 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
702 mf_set_dirty(memfile_T *mfp)
630
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
703 {
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
704 bhdr_T *hp;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
705
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
706 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
707 if (hp->bh_bnum > 0)
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
708 hp->bh_flags |= BH_DIRTY;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
709 mfp->mf_dirty = TRUE;
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
710 }
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
711
52c87a746f4a updated for version 7.0181
vimboss
parents: 557
diff changeset
712 /*
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
713 * insert block *hp in front of hashlist of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
714 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
715 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
716 mf_ins_hash(memfile_T *mfp, bhdr_T *hp)
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 mf_hash_add_item(&mfp->mf_hash, (mf_hashitem_T *)hp);
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 * remove block *hp from hashlist of memfile list *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_rem_hash(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
726 {
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
727 mf_hash_rem_item(&mfp->mf_hash, (mf_hashitem_T *)hp);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
728 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
729
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
730 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
731 * look in hash lists of memfile *mfp for block header with number 'nr'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
732 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
733 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
734 mf_find_hash(memfile_T *mfp, blocknr_T nr)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
735 {
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
736 return (bhdr_T *)mf_hash_find(&mfp->mf_hash, nr);
7
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 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
740 * insert block *hp in front of used list of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
741 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
742 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
743 mf_ins_used(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
744 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
745 hp->bh_next = mfp->mf_used_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
746 mfp->mf_used_first = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
747 hp->bh_prev = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
748 if (hp->bh_next == NULL) /* list was empty, adjust last pointer */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
749 mfp->mf_used_last = hp;
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_next->bh_prev = hp;
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 * remove block *hp from used list of memfile *mfp
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
758 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
759 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
760 mf_rem_used(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
761 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
762 if (hp->bh_next == NULL) /* last block in used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
763 mfp->mf_used_last = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
764 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
765 hp->bh_next->bh_prev = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
766 if (hp->bh_prev == NULL) /* first block in used list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
767 mfp->mf_used_first = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
768 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
769 hp->bh_prev->bh_next = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
770 mfp->mf_used_count -= hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
771 total_mem_used -= hp->bh_page_count * mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
772 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
773
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
774 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
775 * Release the least recently used block from the used list if the number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
776 * of used memory blocks gets to big.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
777 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
778 * Return the block header to the caller, including the memory block, so
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
779 * 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
780 *
cd47def2214a patch 7.4.730
Bram Moolenaar <bram@vim.org>
parents: 6637
diff changeset
781 * Returns NULL if no block is released.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
782 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
783 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
784 mf_release(memfile_T *mfp, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
785 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
786 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
787 int need_release;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
788 buf_T *buf;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
789
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
790 /* don't release while in mf_close_file() */
1066
bffbbb566d6b updated for version 7.0-192
vimboss
parents: 1033
diff changeset
791 if (mf_dont_release)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
792 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
793
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
794 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
795 * Need to release a block if the number of blocks for this memfile is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
796 * higher than the maximum or total memory used is over 'maxmemtot'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
797 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
798 need_release = ((mfp->mf_used_count >= mfp->mf_used_count_max)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
799 || (total_mem_used >> 10) >= (long_u)p_mmt);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
800
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
801 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
802 * 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
803 * high.
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 && p_uc)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
806 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
807 /* find for which buffer this memfile is */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
808 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
809 if (buf->b_ml.ml_mfp == mfp)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
810 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
811 if (buf != NULL && buf->b_may_swap)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
812 ml_open_file(buf);
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 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
816 * don't release a block if
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
817 * there is no file for this memfile
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
818 * or
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
819 * the number of blocks for this memfile is lower than the maximum
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
820 * and
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
821 * total memory used is not up to 'maxmemtot'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
822 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
823 if (mfp->mf_fd < 0 || !need_release)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
824 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
825
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
826 for (hp = mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
827 if (!(hp->bh_flags & BH_LOCKED))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
828 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
829 if (hp == NULL) /* not a single one that can be released */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
830 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
831
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
832 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
833 * If the block is dirty, write it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
834 * If the write fails we don't free it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
835 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
836 if ((hp->bh_flags & BH_DIRTY) && mf_write(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
837 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
838
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
839 mf_rem_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
840 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
841
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
842 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
843 * 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
844 * right
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
845 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
846 if (hp->bh_page_count != page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
847 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
848 vim_free(hp->bh_data);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
849 if ((hp->bh_data = alloc(mfp->mf_page_size * page_count)) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
850 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
851 vim_free(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
852 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
853 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
854 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
855 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
856 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
857 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
858
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
859 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
860 * release as many blocks as possible
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
861 * Used in case of out of memory
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
862 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
863 * return TRUE if any memory was released
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
864 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
865 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
866 mf_release_all(void)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
867 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
868 buf_T *buf;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
869 memfile_T *mfp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
870 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
871 int retval = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
872
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
873 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
874 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
875 mfp = buf->b_ml.ml_mfp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
876 if (mfp != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
877 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
878 /* If no swap file yet, may open one */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
879 if (mfp->mf_fd < 0 && buf->b_may_swap)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
880 ml_open_file(buf);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
881
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
882 /* only if there is a swapfile */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
883 if (mfp->mf_fd >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
884 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
885 for (hp = mfp->mf_used_last; hp != NULL; )
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
886 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
887 if (!(hp->bh_flags & BH_LOCKED)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
888 && (!(hp->bh_flags & BH_DIRTY)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
889 || mf_write(mfp, hp) != FAIL))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
890 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
891 mf_rem_used(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
892 mf_rem_hash(mfp, hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
893 mf_free_bhdr(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
894 hp = mfp->mf_used_last; /* re-start, list was changed */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
895 retval = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
896 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
897 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
898 hp = hp->bh_prev;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
899 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
900 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
901 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
902 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
903 return retval;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
904 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
905
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
906 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
907 * Allocate a block header and a block of memory for it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
908 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
909 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
910 mf_alloc_bhdr(memfile_T *mfp, int page_count)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
911 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
912 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
913
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
914 if ((hp = (bhdr_T *)alloc((unsigned)sizeof(bhdr_T))) != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
915 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
916 if ((hp->bh_data = (char_u *)alloc(mfp->mf_page_size * page_count))
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
917 == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
918 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
919 vim_free(hp); /* not enough memory */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
920 return NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
921 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
922 hp->bh_page_count = page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
923 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
924 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
925 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
926
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
927 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
928 * Free a block header and the block of memory for it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
929 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
930 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
931 mf_free_bhdr(bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
932 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
933 vim_free(hp->bh_data);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
934 vim_free(hp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
935 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
936
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
937 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
938 * insert entry *hp in the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
939 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
940 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
941 mf_ins_free(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
942 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
943 hp->bh_next = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
944 mfp->mf_free_first = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
945 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
946
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
947 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
948 * remove the first entry from the free list and return a pointer to it
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
949 * Note: caller must check that mfp->mf_free_first is not NULL!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
950 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
951 static bhdr_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
952 mf_rem_free(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
953 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
954 bhdr_T *hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
955
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
956 hp = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
957 mfp->mf_free_first = hp->bh_next;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
958 return hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
959 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
960
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
961 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
962 * read a block from disk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
963 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
964 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
965 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
966 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
967 mf_read(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
968 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
969 off_t offset;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
970 unsigned page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
971 unsigned size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
972
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
973 if (mfp->mf_fd < 0) /* there is no file, can't read */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
974 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
975
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
976 page_size = mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
977 offset = (off_t)page_size * hp->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
978 size = page_size * hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
979 if (lseek(mfp->mf_fd, offset, SEEK_SET) != offset)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
980 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
981 PERROR(_("E294: Seek error in swap file read"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
982 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
983 }
2664
033e7b49356c updated for version 7.3.083
Bram Moolenaar <bram@vim.org>
parents: 2267
diff changeset
984 if ((unsigned)read_eintr(mfp->mf_fd, hp->bh_data, size) != size)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
985 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
986 PERROR(_("E295: Read error in swap file"));
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
987 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
988 }
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
989
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
990 #ifdef FEAT_CRYPT
7347
8977b399cf55 commit https://github.com/vim/vim/commit/4a8c2cfc56b9affc36934aa0f20d8cfd2b1511c8
Christian Brabandt <cb@256bit.org>
parents: 6817
diff changeset
991 /* 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
992 * key. */
8977b399cf55 commit https://github.com/vim/vim/commit/4a8c2cfc56b9affc36934aa0f20d8cfd2b1511c8
Christian Brabandt <cb@256bit.org>
parents: 6817
diff changeset
993 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
994 ml_decrypt_data(mfp, hp->bh_data, offset, size);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
995 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
996
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
997 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
998 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
999
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1000 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1001 * write a block to disk
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1002 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1003 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1004 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1005 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1006 mf_write(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1007 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1008 off_t offset; /* offset in the file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1009 blocknr_T nr; /* block nr which is being written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1010 bhdr_T *hp2;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1011 unsigned page_size; /* number of bytes in a page */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1012 unsigned page_count; /* number of pages written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1013 unsigned size; /* number of bytes written */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1014
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1015 if (mfp->mf_fd < 0) /* there is no file, can't write */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1016 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1017
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1018 if (hp->bh_bnum < 0) /* must assign file block number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1019 if (mf_trans_add(mfp, hp) == FAIL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1020 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1021
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1022 page_size = mfp->mf_page_size;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1023
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1024 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1025 * 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
1026 * to extend the file.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1027 * If block 'mf_infile_count' is not in the hash list, it has been
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1028 * freed. Fill the space in the file with data from the current block.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1029 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1030 for (;;)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1031 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1032 nr = hp->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1033 if (nr > mfp->mf_infile_count) /* beyond end of file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1034 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1035 nr = mfp->mf_infile_count;
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1036 hp2 = mf_find_hash(mfp, nr); /* NULL caught below */
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1037 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1038 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1039 hp2 = hp;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1040
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1041 offset = (off_t)page_size * nr;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1042 if (lseek(mfp->mf_fd, offset, SEEK_SET) != offset)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1043 {
1033
19ed3bfbe488 updated for version 7.0-159
vimboss
parents: 1030
diff changeset
1044 PERROR(_("E296: Seek error in swap file write"));
7
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 if (hp2 == NULL) /* freed block, fill with dummy data */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1048 page_count = 1;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1049 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1050 page_count = hp2->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1051 size = page_size * page_count;
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1052 if (mf_write_block(mfp, hp2 == NULL ? hp : hp2, offset, size) == FAIL)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1053 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1054 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1055 * Avoid repeating the error message, this mostly happens when the
1226
a49d06539452 updated for version 7.1b
vimboss
parents: 1166
diff changeset
1056 * disk is full. We give the message again only after a successful
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1057 * write or when hitting a key. We keep on trying, in case some
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1058 * space becomes available.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1059 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1060 if (!did_swapwrite_msg)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1061 EMSG(_("E297: Write error in swap file"));
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1062 did_swapwrite_msg = TRUE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1063 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1064 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1065 did_swapwrite_msg = FALSE;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1066 if (hp2 != NULL) /* written a non-dummy block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1067 hp2->bh_flags &= ~BH_DIRTY;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1068 /* appended to the file */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1069 if (nr + (blocknr_T)page_count > mfp->mf_infile_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1070 mfp->mf_infile_count = nr + page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1071 if (nr == hp->bh_bnum) /* written the desired block */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1072 break;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1073 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1074 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1075 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1076
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1077 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1078 * 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
1079 * Takes care of encryption.
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1080 * Return FAIL or OK.
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 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1083 mf_write_block(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1084 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1085 bhdr_T *hp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1086 off_t offset UNUSED,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1087 unsigned size)
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1088 {
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1089 char_u *data = hp->bh_data;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1090 int result = OK;
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 #ifdef FEAT_CRYPT
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1093 /* Encrypt if 'key' is set and this is a data block. */
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1094 if (*mfp->mf_buffer->b_p_key != NUL)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1095 {
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1096 data = ml_encrypt_data(mfp, data, offset, size);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1097 if (data == NULL)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1098 return FAIL;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1099 }
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1100 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1101
2664
033e7b49356c updated for version 7.3.083
Bram Moolenaar <bram@vim.org>
parents: 2267
diff changeset
1102 if ((unsigned)write_eintr(mfp->mf_fd, data, size) != size)
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1103 result = FAIL;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1104
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1105 #ifdef FEAT_CRYPT
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1106 if (data != hp->bh_data)
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1107 vim_free(data);
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1108 #endif
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1109
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1110 return result;
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1111 }
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1112
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1113 /*
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1114 * Make block number for *hp positive and add it to the translation list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1115 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1116 * Return FAIL for failure, OK otherwise
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1117 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1118 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1119 mf_trans_add(memfile_T *mfp, bhdr_T *hp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1120 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1121 bhdr_T *freep;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1122 blocknr_T new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1123 NR_TRANS *np;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1124 int page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1125
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1126 if (hp->bh_bnum >= 0) /* it's already positive */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1127 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1128
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1129 if ((np = (NR_TRANS *)alloc((unsigned)sizeof(NR_TRANS))) == NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1130 return FAIL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1131
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1132 /*
2267
c08f91142c41 Crypt the swapfile.
Bram Moolenaar <bram@vim.org>
parents: 2249
diff changeset
1133 * Get a new number for the block.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1134 * If the first item in the free list has sufficient pages, use its number
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1135 * Otherwise use mf_blocknr_max.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1136 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1137 freep = mfp->mf_free_first;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1138 page_count = hp->bh_page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1139 if (freep != NULL && freep->bh_page_count >= page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1140 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1141 new_bnum = freep->bh_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1142 /*
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1143 * If the page count of the free block was larger, reduce it.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1144 * If the page count matches, remove the block from the free list
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1145 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1146 if (freep->bh_page_count > page_count)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1147 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1148 freep->bh_bnum += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1149 freep->bh_page_count -= page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1150 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1151 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1152 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1153 freep = mf_rem_free(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1154 vim_free(freep);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1155 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1156 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1157 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1158 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1159 new_bnum = mfp->mf_blocknr_max;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1160 mfp->mf_blocknr_max += page_count;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1161 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1162
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1163 np->nt_old_bnum = hp->bh_bnum; /* adjust number */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1164 np->nt_new_bnum = new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1165
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1166 mf_rem_hash(mfp, hp); /* remove from old hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1167 hp->bh_bnum = new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1168 mf_ins_hash(mfp, hp); /* insert in new hash list */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1169
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1170 /* 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
1171 mf_hash_add_item(&mfp->mf_trans, (mf_hashitem_T *)np);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1172
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1173 return OK;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1174 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1175
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1176 /*
6817
cd47def2214a patch 7.4.730
Bram Moolenaar <bram@vim.org>
parents: 6637
diff changeset
1177 * Lookup a translation from the trans lists and delete the entry.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1178 *
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1179 * Return the positive new number when found, the old number when not found
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1180 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1181 blocknr_T
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1182 mf_trans_del(memfile_T *mfp, blocknr_T old_nr)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1183 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1184 NR_TRANS *np;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1185 blocknr_T new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1186
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1187 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
1188
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1189 if (np == NULL) /* not found */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1190 return old_nr;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1191
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1192 mfp->mf_neg_count--;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1193 new_bnum = np->nt_new_bnum;
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1194
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1195 /* remove entry from the trans list */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1196 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
1197
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1198 vim_free(np);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1199
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1200 return new_bnum;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1201 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1202
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1203 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1204 * Set mfp->mf_ffname according to mfp->mf_fname and some other things.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1205 * Only called when creating or renaming the swapfile. Either way it's a new
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1206 * name so we must work out the full path name.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1207 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1208 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1209 mf_set_ffname(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1210 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1211 mfp->mf_ffname = FullName_save(mfp->mf_fname, FALSE);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1212 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1213
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1214 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1215 * Make the name of the file used for the memfile a full path.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1216 * Used before doing a :cd
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1217 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1218 void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1219 mf_fullname(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1220 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1221 if (mfp != NULL && mfp->mf_fname != NULL && mfp->mf_ffname != NULL)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1222 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1223 vim_free(mfp->mf_fname);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1224 mfp->mf_fname = mfp->mf_ffname;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1225 mfp->mf_ffname = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1226 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1227 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1228
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1229 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1230 * return TRUE if there are any translations pending for 'mfp'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1231 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1232 int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1233 mf_need_trans(memfile_T *mfp)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1234 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1235 return (mfp->mf_fname != NULL && mfp->mf_neg_count > 0);
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 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1239 * Open a swap file for a memfile.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1240 * The "fname" must be in allocated memory, and is consumed (also when an
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1241 * error occurs).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1242 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1243 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1244 mf_do_open(
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1245 memfile_T *mfp,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1246 char_u *fname,
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1247 int flags) /* flags for open() */
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1248 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1249 #ifdef HAVE_LSTAT
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1250 struct stat sb;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1251 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1252
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1253 mfp->mf_fname = fname;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1254
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1255 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1256 * Get the full path name before the open, because this is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1257 * not possible after the open on the Amiga.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1258 * fname cannot be NameBuff, because it must have been allocated.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1259 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1260 mf_set_ffname(mfp);
8212
05b88224cea1 commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents: 7961
diff changeset
1261 #if defined(MSWIN)
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1262 /*
4352
04736b4030ec updated for version 7.3.925
Bram Moolenaar <bram@vim.org>
parents: 2823
diff changeset
1263 * A ":!cd e:xxx" may change the directory without us knowing, use the
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1264 * full pathname always. Careful: This frees fname!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1265 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1266 mf_fullname(mfp);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1267 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1268
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1269 #ifdef HAVE_LSTAT
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1270 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1271 * Extra security check: When creating a swap file it really shouldn't
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1272 * exist yet. If there is a symbolic link, this is most likely an attack.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1273 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1274 if ((flags & O_CREAT) && mch_lstat((char *)mfp->mf_fname, &sb) >= 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1275 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1276 mfp->mf_fd = -1;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1277 EMSG(_("E300: Swap file already exists (symlink attack?)"));
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1278 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1279 else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1280 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1281 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1282 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1283 * try to open the file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1284 */
557
862863033fdd updated for version 7.0158
vimboss
parents: 7
diff changeset
1285 flags |= O_EXTRA | O_NOFOLLOW;
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1286 #ifdef WIN32
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1287 /* Prevent handle inheritance that cause problems with Cscope
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1288 * (swap file may not be deleted if cscope connection was open after
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1289 * the file) */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1290 flags |= O_NOINHERIT;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1291 #endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1292 mfp->mf_fd = mch_open_rw((char *)mfp->mf_fname, flags);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1293 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1294
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1295 /*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1296 * If the file cannot be opened, use memory only
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1297 */
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1298 if (mfp->mf_fd < 0)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1299 {
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1300 vim_free(mfp->mf_fname);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1301 vim_free(mfp->mf_ffname);
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1302 mfp->mf_fname = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1303 mfp->mf_ffname = NULL;
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1304 }
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1305 else
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1306 {
2003
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1307 #ifdef HAVE_FD_CLOEXEC
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1308 int fdflags = fcntl(mfp->mf_fd, F_GETFD);
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1309 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
1310 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC);
2003
5d5cad78a838 updated for version 7.2-300
vimboss
parents: 1668
diff changeset
1311 #endif
5788
410ef4f1a3d2 updated for version 7.4.238
Bram Moolenaar <bram@vim.org>
parents: 4519
diff changeset
1312 #if defined(HAVE_SELINUX) || defined(HAVE_SMACK)
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1313 mch_copy_sec(fname, mfp->mf_fname);
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1314 #endif
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1315 mch_hide(mfp->mf_fname); /* try setting the 'hidden' flag */
1583
ebe059f69b9e updated for version 7.1-296
vimboss
parents: 1230
diff changeset
1316 }
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
1317 }
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1318
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1319 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1320 * Implementation of mf_hashtab_T follows.
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 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1324 * 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
1325 * 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
1326 * exceeds 2 ^ MHT_LOG_LOAD_FACTOR.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1327 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1328 #define MHT_LOG_LOAD_FACTOR 6
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1329 #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
1330
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 * Initialize an empty hash table.
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 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1335 mf_hash_init(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1336 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1337 vim_memset(mht, 0, sizeof(mf_hashtab_T));
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1338 mht->mht_buckets = mht->mht_small_buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1339 mht->mht_mask = MHT_INIT_SIZE - 1;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1340 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1341
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 * 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
1344 * 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
1345 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1346 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1347 mf_hash_free(mf_hashtab_T *mht)
2730
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 if (mht->mht_buckets != mht->mht_small_buckets)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1350 vim_free(mht->mht_buckets);
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 * 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
1355 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1356 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1357 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
1358 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1359 long_u idx;
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 mf_hashitem_T *next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1362
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1363 for (idx = 0; idx <= mht->mht_mask; idx++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1364 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
1365 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1366 next = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1367 vim_free(mhi);
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 mf_hash_free(mht);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1371 }
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 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1374 * Find "key" in hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1375 * 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
1376 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1377 static mf_hashitem_T *
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1378 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
1379 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1380 mf_hashitem_T *mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1381
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1382 mhi = mht->mht_buckets[key & mht->mht_mask];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1383 while (mhi != NULL && mhi->mhi_key != key)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1384 mhi = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1385
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1386 return mhi;
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
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1389 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1390 * Add item "mhi" to hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1391 * "mhi" must not be NULL.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1392 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1393 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1394 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
1395 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1396 long_u idx;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1397
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1398 idx = mhi->mhi_key & mht->mht_mask;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1399 mhi->mhi_next = mht->mht_buckets[idx];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1400 mhi->mhi_prev = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1401 if (mhi->mhi_next != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1402 mhi->mhi_next->mhi_prev = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1403 mht->mht_buckets[idx] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1404
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1405 mht->mht_count++;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1406
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1407 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1408 * 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
1409 * items per bucket on average
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1410 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1411 if (mht->mht_fixed == 0
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1412 && (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
1413 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1414 if (mf_hash_grow(mht) == FAIL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1415 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1416 /* 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
1417 mht->mht_fixed = 1;
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 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1420 }
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 * Remove item "mhi" from hashtable "mht".
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1424 * "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
1425 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1426 static void
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1427 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
1428 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1429 if (mhi->mhi_prev == NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1430 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
1431 else
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1432 mhi->mhi_prev->mhi_next = mhi->mhi_next;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1433
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1434 if (mhi->mhi_next != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1435 mhi->mhi_next->mhi_prev = mhi->mhi_prev;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1436
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1437 mht->mht_count--;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1438
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1439 /* 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
1440 * so why bother? */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1441 }
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 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1444 * 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
1445 * rehash items.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1446 * Returns FAIL when out of memory.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1447 */
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1448 static int
7827
41789f16d6b2 commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents: 7803
diff changeset
1449 mf_hash_grow(mf_hashtab_T *mht)
2730
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1450 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1451 long_u i, j;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1452 int shift;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1453 mf_hashitem_T *mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1454 mf_hashitem_T *tails[MHT_GROWTH_FACTOR];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1455 mf_hashitem_T **buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1456 size_t size;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1457
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1458 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
1459 buckets = (mf_hashitem_T **)lalloc_clear(size, FALSE);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1460 if (buckets == NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1461 return FAIL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1462
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1463 shift = 0;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1464 while ((mht->mht_mask >> shift) != 0)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1465 shift++;
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 for (i = 0; i <= mht->mht_mask; i++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1468 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1469 /*
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1470 * 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
1471 * 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
1472 * 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
1473 * 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
1474 * each bucket.
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1475 *
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1476 * 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
1477 * a power of two.
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
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1480 vim_memset(tails, 0, sizeof(tails));
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1481
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1482 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
1483 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1484 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
1485 if (tails[j] == NULL)
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 buckets[i + (j << shift)] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1488 tails[j] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1489 mhi->mhi_prev = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1490 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1491 else
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1492 {
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1493 tails[j]->mhi_next = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1494 mhi->mhi_prev = tails[j];
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1495 tails[j] = mhi;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1496 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1497 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1498
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1499 for (j = 0; j < MHT_GROWTH_FACTOR; j++)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1500 if (tails[j] != NULL)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1501 tails[j]->mhi_next = NULL;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1502 }
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1503
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1504 if (mht->mht_buckets != mht->mht_small_buckets)
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1505 vim_free(mht->mht_buckets);
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1506
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1507 mht->mht_buckets = buckets;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1508 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
1509
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1510 return OK;
e0a90042318d updated for version 7.3.143
Bram Moolenaar <bram@vim.org>
parents: 2666
diff changeset
1511 }