Mercurial > vim
annotate src/channel.c @ 7774:656db98806b3 v7.4.1184
commit https://github.com/vim/vim/commit/54e09e71984af6db92f3ad37ce390630a23407af
Author: Bram Moolenaar <Bram@vim.org>
Date: Tue Jan 26 23:49:31 2016 +0100
patch 7.4.1184
Problem: MS-Windows build is still broken.
Solution: Change nbsock to ch_fd.
author | Christian Brabandt <cb@256bit.org> |
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date | Wed, 27 Jan 2016 00:00:05 +0100 |
parents | 0677c5b880d1 |
children | e09af43f98f7 |
rev | line source |
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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 */ |
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8 |
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9 /* |
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10 * Implements communication through a socket or any file handle. |
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11 */ |
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12 |
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13 #include "vim.h" |
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14 |
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15 #if defined(FEAT_CHANNEL) || defined(PROTO) |
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16 |
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17 /* |
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18 * Change the zero to 1 to enable debugging. |
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19 * This will write a file "channel_debug.log". |
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20 */ |
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21 #if 0 |
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22 # define CHERROR(fmt, arg) cherror(fmt, arg) |
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23 # define CHLOG(idx, send, buf) chlog(idx, send, buf) |
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24 # define CHFILE "channel_debug.log" |
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25 |
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26 static void cherror(char *fmt, char *arg); |
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27 static void chlog(int send, char_u *buf); |
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28 #else |
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29 # define CHERROR(fmt, arg) |
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30 # define CHLOG(idx, send, buf) |
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31 #endif |
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32 |
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33 /* TRUE when netbeans is running with a GUI. */ |
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34 #ifdef FEAT_GUI |
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35 # define CH_HAS_GUI (gui.in_use || gui.starting) |
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36 #endif |
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37 |
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38 /* Note: when making changes here also adjust configure.in. */ |
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39 #ifdef WIN32 |
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40 /* WinSock API is separated from C API, thus we can't use read(), write(), |
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41 * errno... */ |
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42 # define SOCK_ERRNO errno = WSAGetLastError() |
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43 # undef ECONNREFUSED |
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44 # define ECONNREFUSED WSAECONNREFUSED |
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45 # ifdef EINTR |
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46 # undef EINTR |
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47 # endif |
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48 # define EINTR WSAEINTR |
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49 # define sock_write(sd, buf, len) send(sd, buf, len, 0) |
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50 # define sock_read(sd, buf, len) recv(sd, buf, len, 0) |
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51 # define sock_close(sd) closesocket(sd) |
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52 # define sleep(t) Sleep(t*1000) /* WinAPI Sleep() accepts milliseconds */ |
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53 #else |
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54 # include <netdb.h> |
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55 # include <netinet/in.h> |
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56 |
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57 # include <sys/socket.h> |
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58 # ifdef HAVE_LIBGEN_H |
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59 # include <libgen.h> |
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60 # endif |
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61 # define SOCK_ERRNO |
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62 # define sock_write(sd, buf, len) write(sd, buf, len) |
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63 # define sock_read(sd, buf, len) read(sd, buf, len) |
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64 # define sock_close(sd) close(sd) |
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65 #endif |
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66 |
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67 #ifdef FEAT_GUI_W32 |
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68 extern HWND s_hwnd; /* Gvim's Window handle */ |
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69 #endif |
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70 |
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71 struct readqueue |
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72 { |
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73 char_u *buffer; |
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74 struct readqueue *next; |
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75 struct readqueue *prev; |
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76 }; |
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77 typedef struct readqueue queue_T; |
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78 |
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79 typedef struct { |
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80 sock_T ch_fd; /* the socket, -1 for a closed channel */ |
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81 int ch_idx; /* used by channel_poll_setup() */ |
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82 queue_T ch_head; /* dummy node, header for circular queue */ |
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83 |
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84 int ch_error; /* When TRUE an error was reported. Avoids giving |
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85 * pages full of error messages when the other side |
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86 * has exited, only mention the first error until the |
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87 * connection works again. */ |
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88 #ifdef FEAT_GUI_X11 |
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89 XtInputId ch_inputHandler; /* Cookie for input */ |
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90 #endif |
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91 #ifdef FEAT_GUI_GTK |
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92 gint ch_inputHandler; /* Cookie for input */ |
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93 #endif |
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94 #ifdef FEAT_GUI_W32 |
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95 int ch_inputHandler; /* simply ret.value of WSAAsyncSelect() */ |
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96 #endif |
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97 |
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98 void (*ch_close_cb)(void); /* callback invoked when channel is closed */ |
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99 } channel_T; |
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100 |
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101 /* |
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102 * Information about all channels. |
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103 * There can be gaps for closed channels, they will be reused later. |
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104 */ |
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105 static channel_T *channels = NULL; |
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106 static int channel_count = 0; |
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107 |
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108 /* |
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109 * TODO: open debug file when desired. |
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110 */ |
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111 FILE *debugfd = NULL; |
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112 |
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113 /* |
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114 * Add a new channel slot, return the index. |
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115 * The channel isn't actually used into ch_fd is set >= 0; |
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116 * Returns -1 if all channels are in use. |
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117 */ |
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118 static int |
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119 add_channel(void) |
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120 { |
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121 int idx; |
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122 channel_T *new_channels; |
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123 |
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124 if (channels != NULL) |
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125 for (idx = 0; idx < channel_count; ++idx) |
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126 if (channels[idx].ch_fd < 0) |
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127 /* re-use a closed channel slot */ |
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128 return idx; |
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129 if (channel_count == MAX_OPEN_CHANNELS) |
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130 return -1; |
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131 new_channels = (channel_T *)alloc(sizeof(channel_T) * (channel_count + 1)); |
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132 if (new_channels == NULL) |
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133 return -1; |
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134 if (channels != NULL) |
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135 mch_memmove(new_channels, channels, sizeof(channel_T) * channel_count); |
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136 channels = new_channels; |
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137 (void)vim_memset(&channels[channel_count], 0, sizeof(channel_T)); |
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138 |
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139 channels[channel_count].ch_fd = (sock_T)-1; |
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140 #ifdef FEAT_GUI_X11 |
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141 channels[channel_count].ch_inputHandler = (XtInputId)NULL; |
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142 #endif |
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143 #ifdef FEAT_GUI_GTK |
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144 channels[channel_count].ch_inputHandler = 0; |
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145 #endif |
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146 #ifdef FEAT_GUI_W32 |
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147 channels[channel_count].ch_inputHandler = -1; |
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148 #endif |
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149 |
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150 return channel_count++; |
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151 } |
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152 |
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153 #if defined(FEAT_GUI) || defined(PROTO) |
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154 /* |
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155 * Read a command from netbeans. |
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156 */ |
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157 #ifdef FEAT_GUI_X11 |
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158 static void |
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159 messageFromNetbeans(XtPointer clientData, |
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160 int *unused1 UNUSED, |
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161 XtInputId *unused2 UNUSED) |
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162 { |
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163 channel_read((int)(long)clientData); |
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164 } |
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165 #endif |
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166 |
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167 #ifdef FEAT_GUI_GTK |
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168 static void |
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169 messageFromNetbeans(gpointer clientData, |
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170 gint unused1 UNUSED, |
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171 GdkInputCondition unused2 UNUSED) |
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172 { |
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173 channel_read((int)(long)clientData); |
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174 } |
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175 #endif |
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176 |
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177 static void |
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178 channel_gui_register(int idx) |
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179 { |
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180 channel_T *channel = &channels[idx]; |
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181 |
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182 if (!CH_HAS_GUI) |
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183 return; |
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184 |
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185 # ifdef FEAT_GUI_X11 |
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186 /* tell notifier we are interested in being called |
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187 * when there is input on the editor connection socket |
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188 */ |
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189 if (channel->ch_inputHandler == (XtInputId)NULL) |
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190 channel->ch_inputHandler = |
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191 XtAppAddInput((XtAppContext)app_context, channel->ch_fd, |
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192 (XtPointer)(XtInputReadMask + XtInputExceptMask), |
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193 messageFromNetbeans, (XtPointer)idx); |
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194 # else |
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195 # ifdef FEAT_GUI_GTK |
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196 /* |
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197 * Tell gdk we are interested in being called when there |
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198 * is input on the editor connection socket |
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199 */ |
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200 if (channel->ch_inputHandler == 0) |
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201 channel->ch_inputHandler = |
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202 gdk_input_add((gint)channel->ch_fd, (GdkInputCondition) |
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203 ((int)GDK_INPUT_READ + (int)GDK_INPUT_EXCEPTION), |
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204 messageFromNetbeans, (gpointer)(long)idx); |
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205 # else |
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206 # ifdef FEAT_GUI_W32 |
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207 /* |
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208 * Tell Windows we are interested in receiving message when there |
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209 * is input on the editor connection socket. |
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210 * TODO: change WM_NETBEANS to something related to the channel index. |
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211 */ |
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212 if (channel->ch_inputHandler == -1) |
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213 channel->ch_inputHandler = |
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214 WSAAsyncSelect(channel->ch_fd, s_hwnd, WM_NETBEANS, FD_READ); |
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215 # endif |
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216 # endif |
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217 # endif |
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218 } |
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219 |
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220 /* |
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221 * Register any of our file descriptors with the GUI event handling system. |
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222 * Called when the GUI has started. |
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223 */ |
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224 void |
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225 channel_gui_register_all(void) |
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226 { |
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227 int i; |
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228 |
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229 for (i = 0; i < channel_count; ++i) |
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230 if (channels[i].ch_fd >= 0) |
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231 channel_gui_register(i); |
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232 } |
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233 |
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234 static void |
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235 channel_gui_unregister(int idx) |
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236 { |
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237 channel_T *channel = &channels[idx]; |
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238 |
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239 # ifdef FEAT_GUI_X11 |
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240 if (channel->ch_inputHandler != (XtInputId)NULL) |
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241 { |
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242 XtRemoveInput(channel->ch_inputHandler); |
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243 channel->ch_inputHandler = (XtInputId)NULL; |
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244 } |
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245 # else |
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246 # ifdef FEAT_GUI_GTK |
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247 if (channel->ch_inputHandler != 0) |
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248 { |
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249 gdk_input_remove(channel->ch_inputHandler); |
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250 channel->ch_inputHandler = 0; |
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251 } |
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252 # else |
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253 # ifdef FEAT_GUI_W32 |
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254 if (channel->ch_inputHandler == 0) |
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255 { |
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256 WSAAsyncSelect(channel->ch_fd, s_hwnd, 0, 0); |
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257 channel->ch_inputHandler = -1; |
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258 } |
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259 # endif |
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260 # endif |
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261 # endif |
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262 } |
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263 |
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264 #endif |
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265 |
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266 /* |
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267 * Open a channel to "hostname":"port". |
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268 * Returns the channel number for success. |
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269 * Returns a negative number for failure. |
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270 */ |
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271 int |
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272 channel_open(char *hostname, int port_in, void (*close_cb)(void)) |
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273 { |
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274 int sd; |
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275 struct sockaddr_in server; |
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276 struct hostent * host; |
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277 #ifdef FEAT_GUI_W32 |
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278 u_short port = port_in; |
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279 #else |
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280 int port = port_in; |
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281 #endif |
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282 int idx; |
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283 |
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284 #ifdef FEAT_GUI_W32 |
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285 channel_init_winsock(); |
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286 #endif |
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287 |
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288 idx = add_channel(); |
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289 if (idx < 0) |
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290 { |
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291 CHERROR("All channels are in use\n", ""); |
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292 EMSG(_("E999: All channels are in use")); |
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293 return -1; |
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294 } |
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295 |
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296 if ((sd = (sock_T)socket(AF_INET, SOCK_STREAM, 0)) == (sock_T)-1) |
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297 { |
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298 CHERROR("error in socket() in channel_open()\n", ""); |
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299 PERROR("E999: socket() in channel_open()"); |
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300 return -1; |
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301 } |
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302 |
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303 /* Get the server internet address and put into addr structure */ |
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304 /* fill in the socket address structure and connect to server */ |
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305 vim_memset((char *)&server, 0, sizeof(server)); |
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306 server.sin_family = AF_INET; |
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307 server.sin_port = htons(port); |
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308 if ((host = gethostbyname(hostname)) == NULL) |
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309 { |
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310 CHERROR("error in gethostbyname() in channel_open()\n", ""); |
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311 PERROR("E999: gethostbyname() in channel_open()"); |
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312 sock_close(sd); |
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313 return -1; |
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314 } |
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315 memcpy((char *)&server.sin_addr, host->h_addr, host->h_length); |
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316 |
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317 /* Connect to server */ |
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318 if (connect(sd, (struct sockaddr *)&server, sizeof(server))) |
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319 { |
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320 SOCK_ERRNO; |
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321 CHERROR("channel_open: Connect failed with errno %d\n", errno); |
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322 if (errno == ECONNREFUSED) |
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323 { |
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324 sock_close(sd); |
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325 if ((sd = (sock_T)socket(AF_INET, SOCK_STREAM, 0)) == (sock_T)-1) |
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326 { |
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327 SOCK_ERRNO; |
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328 CHERROR("socket() retry in channel_open()\n", ""); |
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329 PERROR("E999: socket() retry in channel_open()"); |
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330 return -1; |
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331 } |
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332 if (connect(sd, (struct sockaddr *)&server, sizeof(server))) |
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333 { |
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334 int retries = 36; |
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335 int success = FALSE; |
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336 |
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337 SOCK_ERRNO; |
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338 while (retries-- && ((errno == ECONNREFUSED) |
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339 || (errno == EINTR))) |
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340 { |
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341 CHERROR("retrying...\n", ""); |
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342 mch_delay(3000L, TRUE); |
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343 ui_breakcheck(); |
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344 if (got_int) |
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345 { |
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346 errno = EINTR; |
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347 break; |
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348 } |
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349 if (connect(sd, (struct sockaddr *)&server, |
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350 sizeof(server)) == 0) |
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351 { |
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352 success = TRUE; |
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353 break; |
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354 } |
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355 SOCK_ERRNO; |
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356 } |
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357 if (!success) |
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358 { |
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359 /* Get here when the server can't be found. */ |
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360 CHERROR("Cannot connect to port after retry\n", ""); |
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361 PERROR(_("E999: Cannot connect to port after retry2")); |
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362 sock_close(sd); |
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363 return -1; |
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364 } |
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365 } |
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366 } |
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367 else |
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368 { |
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369 CHERROR("Cannot connect to port\n", ""); |
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370 PERROR(_("E999: Cannot connect to port")); |
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371 sock_close(sd); |
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372 return -1; |
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373 } |
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374 } |
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375 |
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376 channels[idx].ch_fd = sd; |
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377 channels[idx].ch_close_cb = close_cb; |
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378 |
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379 #ifdef FEAT_GUI |
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380 channel_gui_register(idx); |
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381 #endif |
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382 |
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383 return idx; |
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384 } |
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385 |
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386 /* |
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387 * Return TRUE when channel "idx" is open. |
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388 */ |
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389 int |
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390 channel_is_open(int idx) |
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391 { |
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392 return channels[idx].ch_fd >= 0; |
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393 } |
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394 |
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395 /* |
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396 * Close channel "idx". |
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397 * This does not trigger the close callback. |
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398 */ |
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399 void |
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400 channel_close(int idx) |
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401 { |
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402 channel_T *channel = &channels[idx]; |
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403 |
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404 if (channel->ch_fd >= 0) |
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405 { |
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406 sock_close(channel->ch_fd); |
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407 channel->ch_fd = -1; |
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408 #ifdef FEAT_GUI |
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409 channel_gui_unregister(idx); |
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410 #endif |
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411 } |
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412 } |
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413 |
7770
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414 /* |
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415 * Store "buf[len]" on channel "idx". |
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416 */ |
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417 void |
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418 channel_save(int idx, char_u *buf, int len) |
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419 { |
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420 queue_T *node; |
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421 queue_T *head = &channels[idx].ch_head; |
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422 |
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423 node = (queue_T *)alloc(sizeof(queue_T)); |
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424 if (node == NULL) |
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425 return; /* out of memory */ |
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426 node->buffer = alloc(len + 1); |
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427 if (node->buffer == NULL) |
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428 { |
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429 vim_free(node); |
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430 return; /* out of memory */ |
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431 } |
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432 mch_memmove(node->buffer, buf, (size_t)len); |
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433 node->buffer[len] = NUL; |
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434 |
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435 if (head->next == NULL) /* initialize circular queue */ |
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436 { |
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437 head->next = head; |
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438 head->prev = head; |
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439 } |
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440 |
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441 /* insert node at tail of queue */ |
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442 node->next = head; |
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443 node->prev = head->prev; |
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444 head->prev->next = node; |
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445 head->prev = node; |
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446 |
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447 if (debugfd != NULL) |
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448 { |
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449 fprintf(debugfd, "RECV on %d: ", idx); |
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450 fwrite(buf, len, 1, debugfd); |
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451 fprintf(debugfd, "\n"); |
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452 } |
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453 } |
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454 |
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455 /* |
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456 * Return the first buffer from the channel without removing it. |
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457 * Returns NULL if there is nothing. |
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458 */ |
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459 char_u * |
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460 channel_peek(int idx) |
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461 { |
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462 queue_T *head = &channels[idx].ch_head; |
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463 |
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464 if (head->next == head || head->next == NULL) |
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465 return NULL; |
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466 return head->next->buffer; |
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467 } |
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468 |
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469 /* |
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470 * Return the first buffer from the channel and remove it. |
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471 * The caller must free it. |
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472 * Returns NULL if there is nothing. |
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473 */ |
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474 char_u * |
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475 channel_get(int idx) |
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476 { |
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477 queue_T *head = &channels[idx].ch_head; |
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478 queue_T *node; |
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479 char_u *p; |
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480 |
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481 if (head->next == head || head->next == NULL) |
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482 return NULL; |
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483 node = head->next; |
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484 /* dispose of the node but keep the buffer */ |
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485 p = node->buffer; |
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486 head->next = node->next; |
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487 node->next->prev = node->prev; |
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488 vim_free(node); |
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489 return p; |
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490 } |
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491 |
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492 /* |
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493 * Collapses the first and second buffer in the channel "idx". |
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494 * Returns FAIL if that is not possible. |
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495 */ |
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496 int |
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497 channel_collapse(int idx) |
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498 { |
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499 queue_T *head = &channels[idx].ch_head; |
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500 queue_T *node = head->next; |
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501 char_u *p; |
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502 |
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503 if (node == head || node == NULL || node->next == head) |
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504 return FAIL; |
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505 |
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506 p = alloc((unsigned)(STRLEN(node->buffer) |
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507 + STRLEN(node->next->buffer) + 1)); |
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508 if (p == NULL) |
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509 return FAIL; /* out of memory */ |
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510 STRCPY(p, node->buffer); |
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511 STRCAT(p, node->next->buffer); |
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512 vim_free(node->next->buffer); |
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513 node->next->buffer = p; |
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514 |
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515 /* dispose of the node and buffer */ |
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516 head->next = node->next; |
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517 node->next->prev = node->prev; |
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518 vim_free(node->buffer); |
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519 vim_free(node); |
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520 return OK; |
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521 } |
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522 |
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523 /* |
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524 * Clear the read buffer on channel "idx". |
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525 */ |
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526 void |
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527 channel_clear(int idx) |
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528 { |
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529 queue_T *head = &channels[idx].ch_head; |
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530 queue_T *node = head->next; |
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531 queue_T *next; |
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532 |
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533 while (node != NULL && node != head) |
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534 { |
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535 next = node->next; |
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536 vim_free(node->buffer); |
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537 vim_free(node); |
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538 if (next == head) |
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539 { |
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540 head->next = head; |
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541 head->prev = head; |
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542 break; |
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543 } |
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544 node = next; |
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545 } |
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546 } |
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547 |
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548 /* Sent when the channel is found closed when reading. */ |
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549 #define DETACH_MSG "\"DETACH\"\n" |
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550 |
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551 /* Buffer size for reading incoming messages. */ |
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552 #define MAXMSGSIZE 4096 |
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553 |
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554 /* |
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555 * Read from channel "idx". The data is put in the read queue. |
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556 */ |
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557 void |
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558 channel_read(int idx) |
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559 { |
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560 static char_u *buf = NULL; |
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561 int len = 0; |
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562 int readlen = 0; |
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563 #ifdef HAVE_SELECT |
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564 struct timeval tval; |
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565 fd_set rfds; |
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566 #else |
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567 # ifdef HAVE_POLL |
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568 struct pollfd fds; |
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569 # endif |
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570 #endif |
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571 channel_T *channel = &channels[idx]; |
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572 |
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573 if (channel->ch_fd < 0) |
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574 { |
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575 CHLOG(idx, FALSE, "channel_read() called while socket is closed\n"); |
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576 return; |
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577 } |
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578 |
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579 /* Allocate a buffer to read into. */ |
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580 if (buf == NULL) |
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581 { |
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582 buf = alloc(MAXMSGSIZE); |
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583 if (buf == NULL) |
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584 return; /* out of memory! */ |
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585 } |
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586 |
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587 /* Keep on reading for as long as there is something to read. |
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588 * Use select() or poll() to avoid blocking on a message that is exactly |
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589 * MAXMSGSIZE long. */ |
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590 for (;;) |
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591 { |
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592 #ifdef HAVE_SELECT |
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593 FD_ZERO(&rfds); |
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594 FD_SET(channel->ch_fd, &rfds); |
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595 tval.tv_sec = 0; |
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596 tval.tv_usec = 0; |
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597 if (select(channel->ch_fd + 1, &rfds, NULL, NULL, &tval) <= 0) |
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598 break; |
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599 #else |
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600 # ifdef HAVE_POLL |
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601 fds.fd = channel->ch_fd; |
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602 fds.events = POLLIN; |
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603 if (poll(&fds, 1, 0) <= 0) |
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604 break; |
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605 # endif |
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606 #endif |
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607 len = sock_read(channel->ch_fd, buf, MAXMSGSIZE); |
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608 if (len <= 0) |
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609 break; /* error or nothing more to read */ |
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610 |
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611 /* Store the read message in the queue. */ |
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612 channel_save(idx, buf, len); |
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613 readlen += len; |
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614 if (len < MAXMSGSIZE) |
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615 break; /* did read everything that's available */ |
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616 } |
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617 |
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618 /* Reading a socket disconnection (readlen == 0), or a socket error. */ |
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619 if (readlen <= 0) |
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620 { |
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621 /* Queue a "DETACH" netbeans message in the command queue in order to |
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622 * terminate the netbeans session later. Do not end the session here |
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623 * directly as we may be running in the context of a call to |
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624 * netbeans_parse_messages(): |
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625 * netbeans_parse_messages |
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626 * -> autocmd triggered while processing the netbeans cmd |
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627 * -> ui_breakcheck |
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628 * -> gui event loop or select loop |
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629 * -> channel_read() |
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630 */ |
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631 channel_save(idx, (char_u *)DETACH_MSG, (int)STRLEN(DETACH_MSG)); |
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632 |
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633 channel_close(idx); |
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634 if (channel->ch_close_cb != NULL) |
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635 (*channel->ch_close_cb)(); |
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636 |
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637 if (len < 0) |
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638 { |
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639 /* Todo: which channel? */ |
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640 CHERROR("%s(): cannot from channel\n", "channel_read"); |
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641 PERROR(_("E999: read from channel")); |
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642 } |
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643 } |
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644 |
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645 #if defined(CH_HAS_GUI) && defined(FEAT_GUI_GTK) |
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646 if (CH_HAS_GUI && gtk_main_level() > 0) |
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647 gtk_main_quit(); |
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648 #endif |
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649 } |
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650 |
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651 /* |
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652 * Write "buf" (NUL terminated string) to channel "idx". |
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653 * When "fun" is not NULL an error message might be given. |
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654 */ |
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655 void |
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656 channel_send(int idx, char_u *buf, char *fun) |
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657 { |
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658 channel_T *channel = &channels[idx]; |
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659 int len = (int)STRLEN(buf); |
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660 |
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661 if (channel->ch_fd < 0) |
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662 { |
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663 if (!channel->ch_error && fun != NULL) |
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664 { |
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665 CHERROR(" %s(): write while not connected\n", fun); |
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666 EMSG2("E630: %s(): write while not connected", fun); |
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667 } |
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668 channel->ch_error = TRUE; |
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669 } |
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670 else if (sock_write(channel->ch_fd, buf, len) != len) |
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671 { |
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672 if (!channel->ch_error && fun != NULL) |
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673 { |
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674 CHERROR(" %s(): write failed\n", fun); |
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675 EMSG2("E631: %s(): write failed", fun); |
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676 } |
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677 channel->ch_error = TRUE; |
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678 } |
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679 else |
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680 channel->ch_error = FALSE; |
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681 } |
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682 |
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683 # if (defined(UNIX) && !defined(HAVE_SELECT)) || defined(PROTO) |
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684 /* |
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685 * Add open channels to the poll struct. |
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686 * Return the adjusted struct index. |
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687 * The type of "fds" is hidden to avoid problems with the function proto. |
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688 */ |
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689 int |
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690 channel_poll_setup(int nfd_in, void *fds_in) |
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691 { |
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692 int nfd = nfd_in; |
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693 int i; |
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694 struct pollfd *fds = fds_in; |
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695 |
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696 for (i = 0; i < channel_count; ++i) |
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697 if (channels[i].ch_fd >= 0) |
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698 { |
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699 channels[i].ch_idx = nfd; |
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700 fds[nfd].fd = channels[i].ch_fd; |
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701 fds[nfd].events = POLLIN; |
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702 nfd++; |
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703 } |
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704 else |
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705 channels[i].ch_idx = -1; |
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706 |
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707 return nfd; |
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708 } |
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709 |
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710 /* |
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711 * The type of "fds" is hidden to avoid problems with the function proto. |
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712 */ |
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713 int |
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714 channel_poll_check(int ret_in, void *fds_in) |
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|
715 { |
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716 int ret = ret_in; |
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717 int i; |
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718 struct pollfd *fds = fds_in; |
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719 |
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720 for (i = 0; i < channel_count; ++i) |
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721 if (ret > 0 && channels[i].ch_idx != -1 |
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722 && fds[channels[i].ch_idx].revents & POLLIN) |
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723 { |
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|
724 channel_read(i); |
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725 --ret; |
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726 } |
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727 |
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728 return ret; |
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729 } |
7770
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730 # endif /* UNIX && !HAVE_SELECT */ |
7743
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731 |
7770
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732 # if (defined(UNIX) && defined(HAVE_SELECT)) || defined(PROTO) |
7743
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733 /* |
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734 * The type of "rfds" is hidden to avoid problems with the function proto. |
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735 */ |
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736 int |
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737 channel_select_setup(int maxfd_in, void *rfds_in) |
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738 { |
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739 int maxfd = maxfd_in; |
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740 int i; |
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741 fd_set *rfds = rfds_in; |
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742 |
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743 for (i = 0; i < channel_count; ++i) |
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744 if (channels[i].ch_fd >= 0) |
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745 { |
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746 FD_SET(channels[i].ch_fd, rfds); |
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747 if (maxfd < channels[i].ch_fd) |
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748 maxfd = channels[i].ch_fd; |
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749 } |
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750 |
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751 return maxfd; |
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752 } |
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753 |
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754 /* |
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755 * The type of "rfds" is hidden to avoid problems with the function proto. |
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756 */ |
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757 int |
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758 channel_select_check(int ret_in, void *rfds_in) |
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759 { |
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760 int ret = ret_in; |
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761 int i; |
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762 fd_set *rfds = rfds_in; |
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763 |
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764 for (i = 0; i < channel_count; ++i) |
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765 if (ret > 0 && channels[i].ch_fd >= 0 |
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766 && FD_ISSET(channels[i].ch_fd, rfds)) |
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767 { |
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768 channel_read(i); |
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769 --ret; |
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770 } |
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771 |
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772 return ret; |
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773 } |
7770
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774 # endif /* UNIX && HAVE_SELECT */ |
7743
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775 |
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776 #endif /* FEAT_CHANNEL */ |