prosody
f7946c8e502f
util-src/poll.c

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util-src/poll.c @ 12261:f7946c8e502f

util.format: Fix typo in comment [codespell]
author Kim Alvefur <zash@zash.se>
date Fri, 04 Feb 2022 16:40:38 +0100
parent 10921:6eb5d2bb11af
child 12314:898554323338
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 #if (LUA_VERSION_NUM < 504)
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41 #define luaL_pushfail lua_pushnil
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42 #endif
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43
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44 /*
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45 * Structure to keep state for each type of API
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46 */
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47 typedef struct Lpoll_state {
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48 int processed;
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49 #ifdef USE_EPOLL
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50 int epoll_fd;
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51 struct epoll_event events[MAX_EVENTS];
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52 #else
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53 fd_set wantread;
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54 fd_set wantwrite;
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55 fd_set readable;
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56 fd_set writable;
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57 fd_set all;
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58 fd_set err;
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59 #endif
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60 } Lpoll_state;
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61
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62 /*
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63 * Add an FD to be watched
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64 */
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65 static int Ladd(lua_State *L) {
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66 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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67 int fd = luaL_checkinteger(L, 2);
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68
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69 int wantread = lua_toboolean(L, 3);
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70 int wantwrite = lua_toboolean(L, 4);
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71
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72 if(fd < 0) {
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73 luaL_pushfail(L);
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74 lua_pushstring(L, strerror(EBADF));
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75 lua_pushinteger(L, EBADF);
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76 return 3;
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77 }
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78
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79 #ifdef USE_EPOLL
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80 struct epoll_event event;
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81 event.data.fd = fd;
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82 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0);
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83
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84 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP;
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85
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86 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_ADD, fd, &event);
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87
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88 if(ret < 0) {
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89 ret = errno;
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90 luaL_pushfail(L);
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91 lua_pushstring(L, strerror(ret));
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92 lua_pushinteger(L, ret);
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93 return 3;
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94 }
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95
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96 lua_pushboolean(L, 1);
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97 return 1;
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98
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99 #else
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100
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101 if(fd > FD_SETSIZE) {
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102 luaL_pushfail(L);
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103 lua_pushstring(L, strerror(EBADF));
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104 lua_pushinteger(L, EBADF);
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105 return 3;
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106 }
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107
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108 if(FD_ISSET(fd, &state->all)) {
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109 luaL_pushfail(L);
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110 lua_pushstring(L, strerror(EEXIST));
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111 lua_pushinteger(L, EEXIST);
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112 return 3;
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113 }
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114
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115 FD_CLR(fd, &state->readable);
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116 FD_CLR(fd, &state->writable);
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117 FD_CLR(fd, &state->err);
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118
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119 FD_SET(fd, &state->all);
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120
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121 if(wantread) {
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122 FD_SET(fd, &state->wantread);
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123 }
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124 else {
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125 FD_CLR(fd, &state->wantread);
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126 }
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127
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128 if(wantwrite) {
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129 FD_SET(fd, &state->wantwrite);
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130 }
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131 else {
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132 FD_CLR(fd, &state->wantwrite);
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133 }
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134
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135 lua_pushboolean(L, 1);
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136 return 1;
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137 #endif
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138 }
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139
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140 /*
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141 * Set events to watch for, readable and/or writable
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142 */
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143 static int Lset(lua_State *L) {
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144 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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145 int fd = luaL_checkinteger(L, 2);
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146
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147 #ifdef USE_EPOLL
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148
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149 int wantread = lua_toboolean(L, 3);
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150 int wantwrite = lua_toboolean(L, 4);
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151
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152 struct epoll_event event;
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153 event.data.fd = fd;
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154 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0);
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155
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156 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP;
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157
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158 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_MOD, fd, &event);
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159
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160 if(ret == 0) {
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161 lua_pushboolean(L, 1);
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162 return 1;
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163 }
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164 else {
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165 ret = errno;
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166 luaL_pushfail(L);
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167 lua_pushstring(L, strerror(ret));
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168 lua_pushinteger(L, ret);
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169 return 3;
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170 }
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171
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172 #else
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173
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174 if(!FD_ISSET(fd, &state->all)) {
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175 luaL_pushfail(L);
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176 lua_pushstring(L, strerror(ENOENT));
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177 lua_pushinteger(L, ENOENT);
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178 return 3;
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179 }
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180
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181 if(!lua_isnoneornil(L, 3)) {
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182 if(lua_toboolean(L, 3)) {
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183 FD_SET(fd, &state->wantread);
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184 }
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185 else {
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186 FD_CLR(fd, &state->wantread);
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187 }
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188 }
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189
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190 if(!lua_isnoneornil(L, 4)) {
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191 if(lua_toboolean(L, 4)) {
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192 FD_SET(fd, &state->wantwrite);
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193 }
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194 else {
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195 FD_CLR(fd, &state->wantwrite);
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196 }
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197 }
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198
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199 lua_pushboolean(L, 1);
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200 return 1;
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201 #endif
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202 }
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203
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204 /*
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205 * Remove FDs
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206 */
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207 static int Ldel(lua_State *L) {
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208 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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209 int fd = luaL_checkinteger(L, 2);
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210
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211 #ifdef USE_EPOLL
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212
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213 struct epoll_event event;
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214 event.data.fd = fd;
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215
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216 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_DEL, fd, &event);
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217
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218 if(ret == 0) {
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219 lua_pushboolean(L, 1);
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220 return 1;
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221 }
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222 else {
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223 ret = errno;
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224 luaL_pushfail(L);
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225 lua_pushstring(L, strerror(ret));
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226 lua_pushinteger(L, ret);
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227 return 3;
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228 }
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229
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230 #else
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231
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232 if(!FD_ISSET(fd, &state->all)) {
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233 luaL_pushfail(L);
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234 lua_pushstring(L, strerror(ENOENT));
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235 lua_pushinteger(L, ENOENT);
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236 return 3;
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237 }
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238
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239 FD_CLR(fd, &state->wantread);
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240 FD_CLR(fd, &state->wantwrite);
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241 FD_CLR(fd, &state->readable);
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242 FD_CLR(fd, &state->writable);
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243 FD_CLR(fd, &state->all);
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244 FD_CLR(fd, &state->err);
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245
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246 lua_pushboolean(L, 1);
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247 return 1;
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248 #endif
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249 }
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250
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251
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252 /*
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253 * Check previously manipulated event state for FDs ready for reading or writing
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254 */
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255 static int Lpushevent(lua_State *L, struct Lpoll_state *state) {
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256 #ifdef USE_EPOLL
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257
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258 if(state->processed > 0) {
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259 state->processed--;
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260 struct epoll_event event = state->events[state->processed];
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261 lua_pushinteger(L, event.data.fd);
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262 lua_pushboolean(L, event.events & (EPOLLIN | EPOLLHUP | EPOLLRDHUP | EPOLLERR));
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263 lua_pushboolean(L, event.events & EPOLLOUT);
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264 return 3;
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265 }
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266
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267 #else
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268
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269 for(int fd = state->processed + 1; fd < FD_SETSIZE; fd++) {
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270 if(FD_ISSET(fd, &state->readable) || FD_ISSET(fd, &state->writable) || FD_ISSET(fd, &state->err)) {
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271 lua_pushinteger(L, fd);
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272 lua_pushboolean(L, FD_ISSET(fd, &state->readable) | FD_ISSET(fd, &state->err));
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273 lua_pushboolean(L, FD_ISSET(fd, &state->writable));
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274 FD_CLR(fd, &state->readable);
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275 FD_CLR(fd, &state->writable);
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276 FD_CLR(fd, &state->err);
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277 state->processed = fd;
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278 return 3;
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279 }
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280 }
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281
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282 #endif
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283 return 0;
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284 }
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285
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286 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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287 * Wait for event
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diff changeset
288 */
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289 static int Lwait(lua_State *L) {
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290 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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291
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diff changeset
292 int ret = Lpushevent(L, state);
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293
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diff changeset
294 if(ret != 0) {
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diff changeset
295 return ret;
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296 }
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297
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298 lua_Number timeout = luaL_checknumber(L, 2);
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299 luaL_argcheck(L, timeout >= 0, 1, "positive number expected");
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300
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diff changeset
301 #ifdef USE_EPOLL
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302 ret = epoll_wait(state->epoll_fd, state->events, MAX_EVENTS, timeout * 1000);
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303 #else
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
304 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
305 * 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
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parents:
diff changeset
306 * have to recreate it manually every time a copy is made.
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diff changeset
307 */
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308 memcpy(&state->readable, &state->wantread, sizeof(fd_set));
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309 memcpy(&state->writable, &state->wantwrite, sizeof(fd_set));
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310 memcpy(&state->err, &state->all, sizeof(fd_set));
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311
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Kim Alvefur <zash@zash.se>
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diff changeset
312 struct timeval tv;
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313 tv.tv_sec = (time_t)timeout;
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314 tv.tv_usec = ((suseconds_t)(timeout * 1000000)) % 1000000;
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315
9437
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316 ret = select(FD_SETSIZE, &state->readable, &state->writable, &state->err, &tv);
9313
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317 #endif
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318
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319 if(ret == 0) {
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320 /* Is this an error? */
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321 lua_pushnil(L);
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322 lua_pushstring(L, "timeout");
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323 return 2;
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diff changeset
324 }
9508
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325 else if(ret < 0 && errno == EINTR) {
10921
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326 /* Is this an error? */
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diff changeset
327 lua_pushnil(L);
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diff changeset
328 lua_pushstring(L, "signal");
2055b497b515 net.server_epoll: Special handling of signal interrupts
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parents: 9507
diff changeset
329 return 2;
2055b497b515 net.server_epoll: Special handling of signal interrupts
Kim Alvefur <zash@zash.se>
parents: 9507
diff changeset
330 }
9313
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diff changeset
331 else if(ret < 0) {
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diff changeset
332 ret = errno;
10921
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diff changeset
333 luaL_pushfail(L);
9313
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diff changeset
334 lua_pushstring(L, strerror(ret));
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Kim Alvefur <zash@zash.se>
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diff changeset
335 lua_pushinteger(L, ret);
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Kim Alvefur <zash@zash.se>
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diff changeset
336 return 3;
b95ef295c66d util.poll: Import poll library with epoll and select support
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parents:
diff changeset
337 }
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
338
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
339 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
340 * 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
341 */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
342 #ifdef USE_EPOLL
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Kim Alvefur <zash@zash.se>
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diff changeset
343 state->processed = ret;
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Kim Alvefur <zash@zash.se>
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diff changeset
344 #else
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diff changeset
345 state->processed = -1;
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Kim Alvefur <zash@zash.se>
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diff changeset
346 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
347 return Lpushevent(L, state);
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
348 }
b95ef295c66d util.poll: Import poll library with epoll and select support
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diff changeset
349
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
350 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
351 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
352 * 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
353 */
9954
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354 static int Lgetfd(lua_State *L) {
9313
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355 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT);
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Kim Alvefur <zash@zash.se>
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diff changeset
356 lua_pushinteger(L, state->epoll_fd);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
357 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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diff changeset
358 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
359
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
360 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
361 * Close epoll FD
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
362 */
9954
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diff changeset
363 static int Lgc(lua_State *L) {
9313
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diff changeset
364 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
365
9478
bd178ed0459b util.poll: Fix inverted logic
Kim Alvefur <zash@zash.se>
parents: 9476
diff changeset
366 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
367 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
368 }
9b26a50cdfe3 util.poll: Early return from __gc in case of no valid epoll FD
Kim Alvefur <zash@zash.se>
parents: 9450
diff changeset
369
9313
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parents:
diff changeset
370 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
371 state->epoll_fd = -1;
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 else {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
374 lua_pushstring(L, strerror(errno));
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
375 lua_error(L);
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 return 0;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
379 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
380 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
381
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
382 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
383 * String representation
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
384 */
9954
36280801ddf1 util.poll: Minimize scope of methods
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parents: 9508
diff changeset
385 static int Ltos(lua_State *L) {
9313
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
386 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
387 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
388 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
389 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
390
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
391 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
392 * Create a new context
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
393 */
9954
36280801ddf1 util.poll: Minimize scope of methods
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diff changeset
394 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
395 /* Allocate state */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
396 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
397 luaL_setmetatable(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
398
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
399 /* Initialize state */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
400 #ifdef USE_EPOLL
9476
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
401 state->epoll_fd = -1;
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
402 state->processed = 0;
9476
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
403
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
404 int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
405
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
406 if(epoll_fd <= 0) {
10921
6eb5d2bb11af util-src: Use the luaL_pushfail API added in Lua 5.4 to highlight all failure conditions
Kim Alvefur <zash@zash.se>
parents: 10096
diff changeset
407 luaL_pushfail(L);
9476
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
408 lua_pushstring(L, strerror(errno));
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
409 lua_pushinteger(L, errno);
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
410 return 3;
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
411 }
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
412
f3935aa4cc7e util.poll: Handle failed epoll FD creation
Kim Alvefur <zash@zash.se>
parents: 9475
diff changeset
413 state->epoll_fd = epoll_fd;
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
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parents:
diff changeset
414 #else
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
415 FD_ZERO(&state->wantread);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
416 FD_ZERO(&state->wantwrite);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
417 FD_ZERO(&state->readable);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
418 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
419 FD_ZERO(&state->all);
352e8b75c1ae util.poll: Zero FD sets watched for errors on creation
Kim Alvefur <zash@zash.se>
parents: 9447
diff changeset
420 FD_ZERO(&state->err);
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
421 state->processed = FD_SETSIZE;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
422 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
423
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
424 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
425 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
426
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff changeset
427 /*
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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428 * Open library
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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429 */
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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430 int luaopen_util_poll(lua_State *L) {
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3429006518bf util.poll: Lua 5.1 compat
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431 #if (LUA_VERSION_NUM > 501)
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432 luaL_checkversion(L);
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433 #endif
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434
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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435 luaL_newmetatable(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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436 {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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437
b95ef295c66d util.poll: Import poll library with epoll and select support
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438 lua_pushliteral(L, STATE_MT);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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439 lua_setfield(L, -2, "__name");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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440
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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441 lua_pushcfunction(L, Ltos);
b95ef295c66d util.poll: Import poll library with epoll and select support
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442 lua_setfield(L, -2, "__tostring");
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Kim Alvefur <zash@zash.se>
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443
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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444 lua_createtable(L, 0, 2);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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445 {
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446 lua_pushcfunction(L, Ladd);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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447 lua_setfield(L, -2, "add");
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Kim Alvefur <zash@zash.se>
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448 lua_pushcfunction(L, Lset);
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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449 lua_setfield(L, -2, "set");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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450 lua_pushcfunction(L, Ldel);
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Kim Alvefur <zash@zash.se>
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451 lua_setfield(L, -2, "del");
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Kim Alvefur <zash@zash.se>
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452 lua_pushcfunction(L, Lwait);
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Kim Alvefur <zash@zash.se>
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453 lua_setfield(L, -2, "wait");
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Kim Alvefur <zash@zash.se>
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454 #ifdef USE_EPOLL
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455 lua_pushcfunction(L, Lgetfd);
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Kim Alvefur <zash@zash.se>
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456 lua_setfield(L, -2, "getfd");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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457 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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458 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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459 lua_setfield(L, -2, "__index");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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460
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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461 #ifdef USE_EPOLL
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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462 lua_pushcfunction(L, Lgc);
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Kim Alvefur <zash@zash.se>
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463 lua_setfield(L, -2, "__gc");
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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464 #endif
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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465 }
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Kim Alvefur <zash@zash.se>
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466
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33d21f020b66 net.server_epoll: Ignore ENOENT when deregitering socket
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467 lua_createtable(L, 0, 3);
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Kim Alvefur <zash@zash.se>
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468 {
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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469 lua_pushcfunction(L, Lnew);
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Kim Alvefur <zash@zash.se>
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470 lua_setfield(L, -2, "new");
9506
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
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471
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
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472 #define push_errno(named_error) lua_pushinteger(L, named_error);\
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
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473 lua_setfield(L, -2, #named_error);
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
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474
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
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475 push_errno(EEXIST);
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33d21f020b66 net.server_epoll: Ignore ENOENT when deregitering socket
Kim Alvefur <zash@zash.se>
parents: 9506
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476 push_errno(ENOENT);
9506
ae6636052be9 net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents: 9478
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477
9313
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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478 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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479 return 1;
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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480 }
b95ef295c66d util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
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481