prosody
2d002a4af144
util-src/poll.c

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util-src/poll.c @ 10825:2d002a4af144

mod_csi_simple: Fix flushing when client sent something Forgot to unset the flag afterwards, so it would only work once. The flag is not even needed, it works as intended without it.
author Kim Alvefur <zash@zash.se>
date Sat, 09 May 2020 13:50:58 +0200
parent 10096:46a7792fdac5
child 10921:6eb5d2bb11af
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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2 /*
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3 * Lua polling library
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4 * Copyright (C) 2017-2018 Kim Alvefur
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5 *
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6 * This project is MIT licensed. Please see the
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7 * COPYING file in the source package for more information.
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8 *
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9 */
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10
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11 #include <unistd.h>
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12 #include <string.h>
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13 #include <errno.h>
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14
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15 #ifdef __linux__
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16 #define USE_EPOLL
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17 #endif
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18
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19 #ifdef USE_EPOLL
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20 #include <sys/epoll.h>
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21 #ifndef MAX_EVENTS
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22 #define MAX_EVENTS 64
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23 #endif
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24 #else
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25 #include <sys/select.h>
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26 #endif
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27
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28 #include <lualib.h>
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29 #include <lauxlib.h>
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30
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31 #ifdef USE_EPOLL
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32 #define STATE_MT "util.poll<epoll>"
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33 #else
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34 #define STATE_MT "util.poll<select>"
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35 #endif
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36
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37 #if (LUA_VERSION_NUM == 501)
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38 #define luaL_setmetatable(L, tname) luaL_getmetatable(L, tname); lua_setmetatable(L, -2)
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39 #endif
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40
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41 /*
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42 * Structure to keep state for each type of API
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43 */
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44 typedef struct Lpoll_state {
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45 int processed;
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46 #ifdef USE_EPOLL
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47 int epoll_fd;
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48 struct epoll_event events[MAX_EVENTS];
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49 #else
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50 fd_set wantread;
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51 fd_set wantwrite;
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52 fd_set readable;
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53 fd_set writable;
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54 fd_set all;
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55 fd_set err;
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56 #endif
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57 } Lpoll_state;
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58
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59 /*
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60 * Add an FD to be watched
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61 */
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62 static int Ladd(lua_State *L) {
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63 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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64 int fd = luaL_checkinteger(L, 2);
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65
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66 int wantread = lua_toboolean(L, 3);
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67 int wantwrite = lua_toboolean(L, 4);
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68
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69 if(fd < 0) {
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70 lua_pushnil(L);
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71 lua_pushstring(L, strerror(EBADF));
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72 lua_pushinteger(L, EBADF);
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73 return 3;
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74 }
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75
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76 #ifdef USE_EPOLL
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77 struct epoll_event event;
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78 event.data.fd = fd;
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79 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0);
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80
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81 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP;
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82
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83 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_ADD, fd, &event);
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84
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85 if(ret < 0) {
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86 ret = errno;
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87 lua_pushnil(L);
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88 lua_pushstring(L, strerror(ret));
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89 lua_pushinteger(L, ret);
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90 return 3;
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91 }
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92
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93 lua_pushboolean(L, 1);
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94 return 1;
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95
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96 #else
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97
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98 if(fd > FD_SETSIZE) {
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99 lua_pushnil(L);
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100 lua_pushstring(L, strerror(EBADF));
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101 lua_pushinteger(L, EBADF);
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102 return 3;
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103 }
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104
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105 if(FD_ISSET(fd, &state->all)) {
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106 lua_pushnil(L);
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107 lua_pushstring(L, strerror(EEXIST));
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108 lua_pushinteger(L, EEXIST);
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109 return 3;
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110 }
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111
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112 FD_CLR(fd, &state->readable);
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113 FD_CLR(fd, &state->writable);
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114 FD_CLR(fd, &state->err);
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115
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116 FD_SET(fd, &state->all);
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117
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118 if(wantread) {
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119 FD_SET(fd, &state->wantread);
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120 }
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121 else {
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122 FD_CLR(fd, &state->wantread);
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123 }
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124
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125 if(wantwrite) {
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126 FD_SET(fd, &state->wantwrite);
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127 }
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128 else {
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129 FD_CLR(fd, &state->wantwrite);
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130 }
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131
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132 lua_pushboolean(L, 1);
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133 return 1;
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134 #endif
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135 }
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136
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137 /*
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138 * Set events to watch for, readable and/or writable
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139 */
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140 static int Lset(lua_State *L) {
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141 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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142 int fd = luaL_checkinteger(L, 2);
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143
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144 #ifdef USE_EPOLL
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145
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146 int wantread = lua_toboolean(L, 3);
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147 int wantwrite = lua_toboolean(L, 4);
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148
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149 struct epoll_event event;
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150 event.data.fd = fd;
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151 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0);
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152
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153 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP;
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154
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155 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_MOD, fd, &event);
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156
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157 if(ret == 0) {
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158 lua_pushboolean(L, 1);
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159 return 1;
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160 }
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161 else {
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162 ret = errno;
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163 lua_pushnil(L);
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164 lua_pushstring(L, strerror(ret));
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165 lua_pushinteger(L, ret);
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166 return 3;
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167 }
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168
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169 #else
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170
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171 if(!FD_ISSET(fd, &state->all)) {
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172 lua_pushnil(L);
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173 lua_pushstring(L, strerror(ENOENT));
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174 lua_pushinteger(L, ENOENT);
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175 return 3;
9313
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176 }
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177
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178 if(!lua_isnoneornil(L, 3)) {
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179 if(lua_toboolean(L, 3)) {
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180 FD_SET(fd, &state->wantread);
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181 }
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182 else {
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183 FD_CLR(fd, &state->wantread);
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184 }
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185 }
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186
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187 if(!lua_isnoneornil(L, 4)) {
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188 if(lua_toboolean(L, 4)) {
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189 FD_SET(fd, &state->wantwrite);
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190 }
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191 else {
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192 FD_CLR(fd, &state->wantwrite);
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193 }
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194 }
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195
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196 lua_pushboolean(L, 1);
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197 return 1;
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198 #endif
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199 }
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200
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201 /*
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202 * Remove FDs
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203 */
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204 static int Ldel(lua_State *L) {
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205 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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206 int fd = luaL_checkinteger(L, 2);
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207
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208 #ifdef USE_EPOLL
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209
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210 struct epoll_event event;
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211 event.data.fd = fd;
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212
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213 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_DEL, fd, &event);
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214
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215 if(ret == 0) {
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216 lua_pushboolean(L, 1);
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217 return 1;
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218 }
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219 else {
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220 ret = errno;
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221 lua_pushnil(L);
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222 lua_pushstring(L, strerror(ret));
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223 lua_pushinteger(L, ret);
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224 return 3;
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225 }
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226
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227 #else
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228
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229 if(!FD_ISSET(fd, &state->all)) {
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230 lua_pushnil(L);
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231 lua_pushstring(L, strerror(ENOENT));
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232 lua_pushinteger(L, ENOENT);
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233 return 3;
9313
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234 }
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235
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236 FD_CLR(fd, &state->wantread);
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237 FD_CLR(fd, &state->wantwrite);
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238 FD_CLR(fd, &state->readable);
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239 FD_CLR(fd, &state->writable);
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240 FD_CLR(fd, &state->all);
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241 FD_CLR(fd, &state->err);
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242
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243 lua_pushboolean(L, 1);
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244 return 1;
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245 #endif
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246 }
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247
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248
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249 /*
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250 * Check previously manipulated event state for FDs ready for reading or writing
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251 */
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252 static int Lpushevent(lua_State *L, struct Lpoll_state *state) {
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253 #ifdef USE_EPOLL
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254
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255 if(state->processed > 0) {
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256 state->processed--;
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257 struct epoll_event event = state->events[state->processed];
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258 lua_pushinteger(L, event.data.fd);
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259 lua_pushboolean(L, event.events & (EPOLLIN | EPOLLHUP | EPOLLRDHUP | EPOLLERR));
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260 lua_pushboolean(L, event.events & EPOLLOUT);
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261 return 3;
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262 }
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263
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264 #else
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265
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266 for(int fd = state->processed + 1; fd < FD_SETSIZE; fd++) {
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267 if(FD_ISSET(fd, &state->readable) || FD_ISSET(fd, &state->writable) || FD_ISSET(fd, &state->err)) {
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268 lua_pushinteger(L, fd);
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269 lua_pushboolean(L, FD_ISSET(fd, &state->readable) | FD_ISSET(fd, &state->err));
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270 lua_pushboolean(L, FD_ISSET(fd, &state->writable));
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271 FD_CLR(fd, &state->readable);
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272 FD_CLR(fd, &state->writable);
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273 FD_CLR(fd, &state->err);
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274 state->processed = fd;
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275 return 3;
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276 }
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277 }
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278
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279 #endif
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280 return 0;
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281 }
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282
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283 /*
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284 * Wait for event
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285 */
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286 static int Lwait(lua_State *L) {
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diff changeset
287 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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288
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parents:
diff changeset
289 int ret = Lpushevent(L, state);
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diff changeset
290
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parents:
diff changeset
291 if(ret != 0) {
b95ef295c66d util.poll: Import poll library with epoll and select support
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parents:
diff changeset
292 return ret;
b95ef295c66d util.poll: Import poll library with epoll and select support
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293 }
b95ef295c66d util.poll: Import poll library with epoll and select support
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294
b95ef295c66d util.poll: Import poll library with epoll and select support
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295 lua_Number timeout = luaL_checknumber(L, 2);
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
296 luaL_argcheck(L, timeout >= 0, 1, "positive number expected");
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297
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
298 #ifdef USE_EPOLL
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diff changeset
299 ret = epoll_wait(state->epoll_fd, state->events, MAX_EVENTS, timeout * 1000);
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
300 #else
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
301 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
302 * select(2) mutates the fd_sets passed to it so in order to not
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
303 * have to recreate it manually every time a copy is made.
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
304 */
b95ef295c66d util.poll: Import poll library with epoll and select support
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parents:
diff changeset
305 memcpy(&state->readable, &state->wantread, sizeof(fd_set));
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diff changeset
306 memcpy(&state->writable, &state->wantwrite, sizeof(fd_set));
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diff changeset
307 memcpy(&state->err, &state->all, sizeof(fd_set));
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
308
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
309 struct timeval tv;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
310 tv.tv_sec = (time_t)timeout;
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
311 tv.tv_usec = ((suseconds_t)(timeout * 1000000)) % 1000000;
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312
9437
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diff changeset
313 ret = select(FD_SETSIZE, &state->readable, &state->writable, &state->err, &tv);
9313
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314 #endif
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diff changeset
315
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parents:
diff changeset
316 if(ret == 0) {
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
317 lua_pushnil(L);
b95ef295c66d util.poll: Import poll library with epoll and select support
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318 lua_pushstring(L, "timeout");
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319 return 2;
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320 }
9508
2055b497b515 net.server_epoll: Special handling of signal interrupts
Kim Alvefur <zash@zash.se>
parents: 9507
diff changeset
321 else if(ret < 0 && errno == EINTR) {
2055b497b515 net.server_epoll: Special handling of signal interrupts
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parents: 9507
diff changeset
322 lua_pushnil(L);
2055b497b515 net.server_epoll: Special handling of signal interrupts
Kim Alvefur <zash@zash.se>
parents: 9507
diff changeset
323 lua_pushstring(L, "signal");
2055b497b515 net.server_epoll: Special handling of signal interrupts
Kim Alvefur <zash@zash.se>
parents: 9507
diff changeset
324 return 2;
2055b497b515 net.server_epoll: Special handling of signal interrupts
Kim Alvefur <zash@zash.se>
parents: 9507
diff changeset
325 }
9313
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Kim Alvefur <zash@zash.se>
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diff changeset
326 else if(ret < 0) {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
327 ret = errno;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
328 lua_pushnil(L);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
329 lua_pushstring(L, strerror(ret));
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
330 lua_pushinteger(L, ret);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
331 return 3;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
332 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
333
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
334 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
335 * Search for the first ready FD and return it
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
336 */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
337 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
338 state->processed = ret;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
339 #else
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
340 state->processed = -1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
341 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
342 return Lpushevent(L, state);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
343 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
344
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
345 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
346 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
347 * Return Epoll FD
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
348 */
9954
36280801ddf1 util.poll: Minimize scope of methods
Kim Alvefur <zash@zash.se>
parents: 9508
diff changeset
349 static int Lgetfd(lua_State *L) {
9313
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Kim Alvefur <zash@zash.se>
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diff changeset
350 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
351 lua_pushinteger(L, state->epoll_fd);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
352 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
353 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
354
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
355 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
356 * Close epoll FD
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
357 */
9954
36280801ddf1 util.poll: Minimize scope of methods
Kim Alvefur <zash@zash.se>
parents: 9508
diff changeset
358 static int Lgc(lua_State *L) {
9313
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
359 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
360
9478
bd178ed0459b util.poll: Fix inverted logic
Kim Alvefur <zash@zash.se>
parents: 9476
diff changeset
361 if(state->epoll_fd == -1) {
9475
9b26a50cdfe3 util.poll: Early return from __gc in case of no valid epoll FD
Kim Alvefur <zash@zash.se>
parents: 9450
diff changeset
362 return 0;
9b26a50cdfe3 util.poll: Early return from __gc in case of no valid epoll FD
Kim Alvefur <zash@zash.se>
parents: 9450
diff changeset
363 }
9b26a50cdfe3 util.poll: Early return from __gc in case of no valid epoll FD
Kim Alvefur <zash@zash.se>
parents: 9450
diff changeset
364
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
365 if(close(state->epoll_fd) == 0) {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
366 state->epoll_fd = -1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
367 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
368 else {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
369 lua_pushstring(L, strerror(errno));
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
370 lua_error(L);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
371 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
372
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
373 return 0;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
374 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
375 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
376
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
377 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
378 * String representation
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
379 */
9954
36280801ddf1 util.poll: Minimize scope of methods
Kim Alvefur <zash@zash.se>
parents: 9508
diff changeset
380 static int Ltos(lua_State *L) {
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
381 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
382 lua_pushfstring(L, "%s: %p", STATE_MT, state);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
383 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
384 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
385
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
386 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
387 * Create a new context
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
388 */
9954
36280801ddf1 util.poll: Minimize scope of methods
Kim Alvefur <zash@zash.se>
parents: 9508
diff changeset
389 static int Lnew(lua_State *L) {
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
390 /* Allocate state */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
391 Lpoll_state *state = lua_newuserdata(L, sizeof(Lpoll_state));
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
392 luaL_setmetatable(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
393
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
394 /* Initialize state */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
395 #ifdef USE_EPOLL
9476
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
396 state->epoll_fd = -1;
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
397 state->processed = 0;
9476
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
398
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
399 int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
400
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
401 if(epoll_fd <= 0) {
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
402 lua_pushnil(L);
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
403 lua_pushstring(L, strerror(errno));
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
404 lua_pushinteger(L, errno);
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
405 return 3;
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
406 }
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
407
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
408 state->epoll_fd = epoll_fd;
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
409 #else
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
410 FD_ZERO(&state->wantread);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
411 FD_ZERO(&state->wantwrite);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
412 FD_ZERO(&state->readable);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
413 FD_ZERO(&state->writable);
9448
352e8b75c1ae util.poll: Zero FD sets watched for errors on creation
Kim Alvefur <zash@zash.se>
parents: 9447
diff changeset
414 FD_ZERO(&state->all);
352e8b75c1ae util.poll: Zero FD sets watched for errors on creation
Kim Alvefur <zash@zash.se>
parents: 9447
diff changeset
415 FD_ZERO(&state->err);
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
416 state->processed = FD_SETSIZE;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
417 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
418
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
419 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
420 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
421
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
422 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
423 * Open library
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
424 */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
425 int luaopen_util_poll(lua_State *L) {
9318
3429006518bf util.poll: Lua 5.1 compat
Kim Alvefur <zash@zash.se>
parents: 9317
diff changeset
426 #if (LUA_VERSION_NUM > 501)
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
427 luaL_checkversion(L);
9318
3429006518bf util.poll: Lua 5.1 compat
Kim Alvefur <zash@zash.se>
parents: 9317
diff changeset
428 #endif
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
429
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
430 luaL_newmetatable(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
431 {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
432
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
433 lua_pushliteral(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
434 lua_setfield(L, -2, "__name");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
435
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
436 lua_pushcfunction(L, Ltos);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
437 lua_setfield(L, -2, "__tostring");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
438
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
439 lua_createtable(L, 0, 2);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
440 {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
441 lua_pushcfunction(L, Ladd);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
442 lua_setfield(L, -2, "add");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
443 lua_pushcfunction(L, Lset);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
444 lua_setfield(L, -2, "set");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
445 lua_pushcfunction(L, Ldel);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
446 lua_setfield(L, -2, "del");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
447 lua_pushcfunction(L, Lwait);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
448 lua_setfield(L, -2, "wait");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
449 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
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450 lua_pushcfunction(L, Lgetfd);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
451 lua_setfield(L, -2, "getfd");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
452 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
453 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
454 lua_setfield(L, -2, "__index");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
455
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
456 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
457 lua_pushcfunction(L, Lgc);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
458 lua_setfield(L, -2, "__gc");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
459 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
460 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
461
9507
33d21f020b66 net.server_epoll: Ignore ENOENT when deregitering socket
Kim Alvefur <zash@zash.se>
parents: 9506
diff changeset
462 lua_createtable(L, 0, 3);
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
463 {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
464 lua_pushcfunction(L, Lnew);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
465 lua_setfield(L, -2, "new");
9506
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
466
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
467 #define push_errno(named_error) lua_pushinteger(L, named_error);\
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
468 lua_setfield(L, -2, #named_error);
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
469
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
470 push_errno(EEXIST);
9507
33d21f020b66 net.server_epoll: Ignore ENOENT when deregitering socket
Kim Alvefur <zash@zash.se>
parents: 9506
diff changeset
471 push_errno(ENOENT);
9506
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
diff changeset
472
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
473 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
474 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
475 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
476