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util-src/poll.c @ 12852:c35afa353f8f
mod_admin_socket: Fix typo in comments
Introduced in 6966026262f4
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 20 Jan 2023 18:16:10 +0100 |
parent | 12575:1f6f05a98fcd |
child | 12884:f5a75aaa8a25 |
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) 2017-2022 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 #if defined(__linux__) |
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16 #define USE_EPOLL |
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17 #define POLL_BACKEND "epoll" |
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18 #elif defined(__unix__) |
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19 #define USE_POLL |
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20 #define POLL_BACKEND "poll" |
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21 #else |
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22 #define USE_SELECT |
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23 #define POLL_BACKEND "select" |
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24 #endif |
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25 |
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26 #ifdef USE_EPOLL |
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27 #include <sys/epoll.h> |
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28 #ifndef MAX_EVENTS |
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29 #define MAX_EVENTS 64 |
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30 #endif |
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31 #endif |
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32 #ifdef USE_POLL |
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33 #include <poll.h> |
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34 #ifndef MAX_EVENTS |
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35 #define MAX_EVENTS 10000 |
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36 #endif |
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37 #endif |
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38 #ifdef USE_SELECT |
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39 #include <sys/select.h> |
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40 #endif |
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41 |
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42 #include <lualib.h> |
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43 #include <lauxlib.h> |
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44 |
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45 #define STATE_MT "util.poll<" POLL_BACKEND ">" |
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46 |
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47 #if (LUA_VERSION_NUM < 504) |
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48 #define luaL_pushfail lua_pushnil |
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49 #endif |
9318 | 50 |
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51 /* |
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52 * Structure to keep state for each type of API |
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53 */ |
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54 typedef struct Lpoll_state { |
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55 int processed; |
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56 #ifdef USE_EPOLL |
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57 int epoll_fd; |
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58 struct epoll_event events[MAX_EVENTS]; |
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59 #endif |
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60 #ifdef USE_POLL |
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61 nfds_t count; |
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62 struct pollfd events[MAX_EVENTS]; |
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63 #endif |
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64 #ifdef USE_SELECT |
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65 fd_set wantread; |
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66 fd_set wantwrite; |
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67 fd_set readable; |
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68 fd_set writable; |
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69 fd_set all; |
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70 fd_set err; |
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71 #endif |
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72 } Lpoll_state; |
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73 |
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74 /* |
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75 * Add an FD to be watched |
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76 */ |
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77 static int Ladd(lua_State *L) { |
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78 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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79 int fd = luaL_checkinteger(L, 2); |
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80 |
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81 int wantread = lua_toboolean(L, 3); |
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82 int wantwrite = lua_toboolean(L, 4); |
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83 |
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84 if(fd < 0) { |
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85 luaL_pushfail(L); |
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86 lua_pushstring(L, strerror(EBADF)); |
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87 lua_pushinteger(L, EBADF); |
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88 return 3; |
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89 } |
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90 |
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91 #ifdef USE_EPOLL |
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92 struct epoll_event event; |
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93 event.data.fd = fd; |
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94 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0); |
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95 |
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96 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP; |
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97 |
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98 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_ADD, fd, &event); |
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99 |
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100 if(ret < 0) { |
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101 ret = errno; |
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102 luaL_pushfail(L); |
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103 lua_pushstring(L, strerror(ret)); |
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104 lua_pushinteger(L, ret); |
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105 return 3; |
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106 } |
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107 |
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108 lua_pushboolean(L, 1); |
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109 return 1; |
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110 |
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111 #endif |
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112 #ifdef USE_POLL |
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113 |
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114 for(nfds_t i = 0; i < state->count; i++) { |
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115 if(state->events[i].fd == fd) { |
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116 luaL_pushfail(L); |
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117 lua_pushstring(L, strerror(EEXIST)); |
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118 lua_pushinteger(L, EEXIST); |
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119 return 3; |
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120 } |
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121 } |
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122 |
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123 if(state->count >= MAX_EVENTS) { |
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124 luaL_pushfail(L); |
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125 lua_pushstring(L, strerror(EMFILE)); |
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126 lua_pushinteger(L, EMFILE); |
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127 return 3; |
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128 } |
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129 |
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130 state->events[state->count].fd = fd; |
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131 state->events[state->count].events = (wantread ? POLLIN : 0) | (wantwrite ? POLLOUT : 0); |
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132 state->events[state->count].revents = 0; |
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133 state->count++; |
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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 #ifdef USE_SELECT |
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139 |
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140 if(fd > FD_SETSIZE) { |
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141 luaL_pushfail(L); |
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142 lua_pushstring(L, strerror(EBADF)); |
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143 lua_pushinteger(L, EBADF); |
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144 return 3; |
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145 } |
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146 |
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147 if(FD_ISSET(fd, &state->all)) { |
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148 luaL_pushfail(L); |
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149 lua_pushstring(L, strerror(EEXIST)); |
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150 lua_pushinteger(L, EEXIST); |
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151 return 3; |
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152 } |
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153 |
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154 FD_CLR(fd, &state->readable); |
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155 FD_CLR(fd, &state->writable); |
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156 FD_CLR(fd, &state->err); |
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157 |
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158 FD_SET(fd, &state->all); |
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159 |
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160 if(wantread) { |
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161 FD_SET(fd, &state->wantread); |
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162 } |
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163 else { |
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164 FD_CLR(fd, &state->wantread); |
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165 } |
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166 |
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167 if(wantwrite) { |
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168 FD_SET(fd, &state->wantwrite); |
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169 } |
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170 else { |
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171 FD_CLR(fd, &state->wantwrite); |
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172 } |
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173 |
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174 lua_pushboolean(L, 1); |
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175 return 1; |
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176 #endif |
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177 } |
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178 |
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179 /* |
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180 * Set events to watch for, readable and/or writable |
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181 */ |
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182 static int Lset(lua_State *L) { |
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183 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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184 int fd = luaL_checkinteger(L, 2); |
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185 |
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186 #ifdef USE_EPOLL |
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187 |
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188 int wantread = lua_toboolean(L, 3); |
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189 int wantwrite = lua_toboolean(L, 4); |
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190 |
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191 struct epoll_event event; |
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192 event.data.fd = fd; |
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193 event.events = (wantread ? EPOLLIN : 0) | (wantwrite ? EPOLLOUT : 0); |
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194 |
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195 event.events |= EPOLLERR | EPOLLHUP | EPOLLRDHUP; |
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196 |
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197 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_MOD, fd, &event); |
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198 |
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199 if(ret == 0) { |
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200 lua_pushboolean(L, 1); |
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201 return 1; |
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202 } |
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203 else { |
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204 ret = errno; |
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205 luaL_pushfail(L); |
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206 lua_pushstring(L, strerror(ret)); |
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207 lua_pushinteger(L, ret); |
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208 return 3; |
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209 } |
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210 |
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211 #endif |
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212 #ifdef USE_POLL |
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213 int wantread = lua_toboolean(L, 3); |
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214 int wantwrite = lua_toboolean(L, 4); |
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215 |
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216 for(nfds_t i = 0; i < state->count; i++) { |
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217 struct pollfd *event = &state->events[i]; |
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218 |
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219 if(event->fd == fd) { |
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220 event->events = (wantread ? POLLIN : 0) | (wantwrite ? POLLOUT : 0); |
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221 lua_pushboolean(L, 1); |
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222 return 1; |
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223 } else if(event->fd == -1) { |
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224 break; |
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225 } |
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226 } |
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227 |
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228 luaL_pushfail(L); |
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229 lua_pushstring(L, strerror(ENOENT)); |
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230 lua_pushinteger(L, ENOENT); |
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231 return 3; |
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232 #endif |
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233 #ifdef USE_SELECT |
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234 |
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235 if(!FD_ISSET(fd, &state->all)) { |
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236 luaL_pushfail(L); |
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237 lua_pushstring(L, strerror(ENOENT)); |
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238 lua_pushinteger(L, ENOENT); |
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239 return 3; |
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240 } |
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241 |
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242 if(!lua_isnoneornil(L, 3)) { |
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243 if(lua_toboolean(L, 3)) { |
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244 FD_SET(fd, &state->wantread); |
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245 } |
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246 else { |
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247 FD_CLR(fd, &state->wantread); |
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248 } |
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249 } |
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250 |
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251 if(!lua_isnoneornil(L, 4)) { |
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252 if(lua_toboolean(L, 4)) { |
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253 FD_SET(fd, &state->wantwrite); |
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254 } |
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255 else { |
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256 FD_CLR(fd, &state->wantwrite); |
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257 } |
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258 } |
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259 |
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260 lua_pushboolean(L, 1); |
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261 return 1; |
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262 #endif |
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263 } |
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264 |
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265 /* |
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266 * Remove FDs |
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267 */ |
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268 static int Ldel(lua_State *L) { |
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269 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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270 int fd = luaL_checkinteger(L, 2); |
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271 |
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272 #ifdef USE_EPOLL |
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273 |
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274 struct epoll_event event; |
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275 event.data.fd = fd; |
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276 |
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277 int ret = epoll_ctl(state->epoll_fd, EPOLL_CTL_DEL, fd, &event); |
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278 |
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279 if(ret == 0) { |
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280 lua_pushboolean(L, 1); |
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281 return 1; |
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282 } |
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283 else { |
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284 ret = errno; |
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285 luaL_pushfail(L); |
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286 lua_pushstring(L, strerror(ret)); |
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287 lua_pushinteger(L, ret); |
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288 return 3; |
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289 } |
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290 |
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291 #endif |
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292 #ifdef USE_POLL |
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293 |
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294 if(state->count == 0) { |
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295 luaL_pushfail(L); |
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296 lua_pushstring(L, strerror(ENOENT)); |
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297 lua_pushinteger(L, ENOENT); |
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298 return 3; |
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299 } |
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300 |
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301 /* |
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302 * Move the last item on top of the removed one |
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303 */ |
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304 struct pollfd *last = &state->events[state->count - 1]; |
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305 |
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306 for(nfds_t i = 0; i < state->count; i++) { |
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307 struct pollfd *event = &state->events[i]; |
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308 |
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309 if(event->fd == fd) { |
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310 event->fd = last->fd; |
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311 event->events = last->events; |
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312 event->revents = last->revents; |
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313 last->fd = -1; |
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314 state->count--; |
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315 |
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316 lua_pushboolean(L, 1); |
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317 return 1; |
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318 } |
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319 } |
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320 |
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321 luaL_pushfail(L); |
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322 lua_pushstring(L, strerror(ENOENT)); |
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323 lua_pushinteger(L, ENOENT); |
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324 return 3; |
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325 #endif |
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326 #ifdef USE_SELECT |
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327 |
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328 if(!FD_ISSET(fd, &state->all)) { |
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329 luaL_pushfail(L); |
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330 lua_pushstring(L, strerror(ENOENT)); |
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331 lua_pushinteger(L, ENOENT); |
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332 return 3; |
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333 } |
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334 |
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335 FD_CLR(fd, &state->wantread); |
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336 FD_CLR(fd, &state->wantwrite); |
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337 FD_CLR(fd, &state->readable); |
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338 FD_CLR(fd, &state->writable); |
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339 FD_CLR(fd, &state->all); |
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340 FD_CLR(fd, &state->err); |
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341 |
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342 lua_pushboolean(L, 1); |
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343 return 1; |
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344 #endif |
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345 } |
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346 |
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347 |
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348 /* |
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349 * Check previously manipulated event state for FDs ready for reading or writing |
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350 */ |
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351 static int Lpushevent(lua_State *L, struct Lpoll_state *state) { |
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352 #ifdef USE_EPOLL |
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353 |
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354 if(state->processed > 0) { |
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355 state->processed--; |
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356 struct epoll_event event = state->events[state->processed]; |
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357 lua_pushinteger(L, event.data.fd); |
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358 lua_pushboolean(L, event.events & (EPOLLIN | EPOLLHUP | EPOLLRDHUP | EPOLLERR)); |
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359 lua_pushboolean(L, event.events & EPOLLOUT); |
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360 return 3; |
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361 } |
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362 |
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363 #endif |
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364 #ifdef USE_POLL |
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365 |
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366 for(int i = state->processed - 1; i >= 0; i--) { |
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367 struct pollfd *event = &state->events[i]; |
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368 |
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369 if(event->fd != -1 && event->revents != 0) { |
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370 lua_pushinteger(L, event->fd); |
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371 lua_pushboolean(L, event->revents & (POLLIN | POLLHUP | POLLERR)); |
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372 lua_pushboolean(L, event->revents & POLLOUT); |
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373 event->revents = 0; |
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374 state->processed = i; |
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375 return 3; |
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376 } |
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377 } |
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378 |
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379 #endif |
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380 #ifdef USE_SELECT |
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381 |
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382 for(int fd = state->processed + 1; fd < FD_SETSIZE; fd++) { |
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383 if(FD_ISSET(fd, &state->readable) || FD_ISSET(fd, &state->writable) || FD_ISSET(fd, &state->err)) { |
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384 lua_pushinteger(L, fd); |
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385 lua_pushboolean(L, FD_ISSET(fd, &state->readable) | FD_ISSET(fd, &state->err)); |
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386 lua_pushboolean(L, FD_ISSET(fd, &state->writable)); |
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387 FD_CLR(fd, &state->readable); |
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388 FD_CLR(fd, &state->writable); |
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389 FD_CLR(fd, &state->err); |
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390 state->processed = fd; |
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391 return 3; |
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392 } |
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393 } |
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394 |
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395 #endif |
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396 return 0; |
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397 } |
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398 |
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399 /* |
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400 * Wait for event |
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401 */ |
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402 static int Lwait(lua_State *L) { |
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403 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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404 |
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405 int ret = Lpushevent(L, state); |
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406 |
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407 if(ret != 0) { |
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408 return ret; |
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409 } |
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410 |
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411 lua_Number timeout = luaL_checknumber(L, 2); |
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412 luaL_argcheck(L, timeout >= 0, 1, "positive number expected"); |
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413 |
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414 #ifdef USE_EPOLL |
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415 ret = epoll_wait(state->epoll_fd, state->events, MAX_EVENTS, timeout * 1000); |
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416 #endif |
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417 #ifdef USE_POLL |
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418 ret = poll(state->events, state->count, timeout * 1000); |
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419 #endif |
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420 #ifdef USE_SELECT |
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421 /* |
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422 * select(2) mutates the fd_sets passed to it so in order to not |
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423 * have to recreate it manually every time a copy is made. |
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424 */ |
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425 memcpy(&state->readable, &state->wantread, sizeof(fd_set)); |
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426 memcpy(&state->writable, &state->wantwrite, sizeof(fd_set)); |
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427 memcpy(&state->err, &state->all, sizeof(fd_set)); |
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428 |
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429 struct timeval tv; |
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430 tv.tv_sec = (time_t)timeout; |
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431 tv.tv_usec = ((suseconds_t)(timeout * 1000000)) % 1000000; |
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432 |
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433 ret = select(FD_SETSIZE, &state->readable, &state->writable, &state->err, &tv); |
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434 #endif |
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435 |
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436 if(ret == 0) { |
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437 /* Is this an error? */ |
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438 lua_pushnil(L); |
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439 lua_pushstring(L, "timeout"); |
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440 return 2; |
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441 } |
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442 else if(ret < 0 && errno == EINTR) { |
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443 /* Is this an error? */ |
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444 lua_pushnil(L); |
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445 lua_pushstring(L, "signal"); |
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446 return 2; |
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447 } |
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448 else if(ret < 0) { |
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449 ret = errno; |
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450 luaL_pushfail(L); |
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451 lua_pushstring(L, strerror(ret)); |
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452 lua_pushinteger(L, ret); |
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453 return 3; |
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454 } |
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455 |
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456 /* |
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457 * Search for the first ready FD and return it |
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458 */ |
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459 #ifdef USE_EPOLL |
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460 state->processed = ret; |
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461 #endif |
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462 #ifdef USE_POLL |
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463 state->processed = state->count; |
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464 #endif |
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465 #ifdef USE_SELECT |
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466 state->processed = -1; |
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467 #endif |
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468 return Lpushevent(L, state); |
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469 } |
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470 |
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471 #ifdef USE_EPOLL |
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472 /* |
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473 * Return Epoll FD |
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474 */ |
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475 static int Lgetfd(lua_State *L) { |
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476 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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477 lua_pushinteger(L, state->epoll_fd); |
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478 return 1; |
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479 } |
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480 |
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481 /* |
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482 * Close epoll FD |
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483 */ |
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484 static int Lgc(lua_State *L) { |
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485 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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486 |
9478 | 487 if(state->epoll_fd == -1) { |
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488 return 0; |
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489 } |
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490 |
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491 if(close(state->epoll_fd) == 0) { |
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492 state->epoll_fd = -1; |
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493 } |
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494 else { |
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495 lua_pushstring(L, strerror(errno)); |
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496 lua_error(L); |
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|
497 } |
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|
498 |
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|
499 return 0; |
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|
500 } |
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|
501 #endif |
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|
502 |
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parents:
diff
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|
503 /* |
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diff
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|
504 * String representation |
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505 */ |
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506 static int Ltos(lua_State *L) { |
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507 struct Lpoll_state *state = luaL_checkudata(L, 1, STATE_MT); |
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508 lua_pushfstring(L, "%s: %p", STATE_MT, state); |
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509 return 1; |
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510 } |
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511 |
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|
512 /* |
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513 * Create a new context |
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514 */ |
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515 static int Lnew(lua_State *L) { |
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516 /* Allocate state */ |
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517 Lpoll_state *state = lua_newuserdata(L, sizeof(Lpoll_state)); |
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518 luaL_setmetatable(L, STATE_MT); |
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519 |
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520 /* Initialize state */ |
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521 #ifdef USE_EPOLL |
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522 state->epoll_fd = -1; |
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523 state->processed = 0; |
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524 |
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525 int epoll_fd = epoll_create1(EPOLL_CLOEXEC); |
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|
526 |
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527 if(epoll_fd <= 0) { |
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528 luaL_pushfail(L); |
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529 lua_pushstring(L, strerror(errno)); |
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530 lua_pushinteger(L, errno); |
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|
531 return 3; |
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parents:
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|
532 } |
f3935aa4cc7e
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|
533 |
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534 state->epoll_fd = epoll_fd; |
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535 #endif |
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536 #ifdef USE_POLL |
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537 state->processed = -1; |
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538 state->count = 0; |
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|
539 |
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540 for(nfds_t i = 0; i < MAX_EVENTS; i++) { |
6bb2f660f689
util.poll: Add support for the poll() API
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parents:
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541 state->events[i].fd = -1; |
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542 state->events[i].events = 0; |
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parents:
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543 state->events[i].revents = 0; |
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544 } |
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|
545 |
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546 #endif |
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547 #ifdef USE_SELECT |
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548 FD_ZERO(&state->wantread); |
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|
549 FD_ZERO(&state->wantwrite); |
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parents:
diff
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|
550 FD_ZERO(&state->readable); |
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parents:
diff
changeset
|
551 FD_ZERO(&state->writable); |
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util.poll: Zero FD sets watched for errors on creation
Kim Alvefur <zash@zash.se>
parents:
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552 FD_ZERO(&state->all); |
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util.poll: Zero FD sets watched for errors on creation
Kim Alvefur <zash@zash.se>
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|
553 FD_ZERO(&state->err); |
9313
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|
554 state->processed = FD_SETSIZE; |
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diff
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|
555 #endif |
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
556 |
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parents:
diff
changeset
|
557 return 1; |
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parents:
diff
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|
558 } |
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parents:
diff
changeset
|
559 |
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parents:
diff
changeset
|
560 /* |
b95ef295c66d
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
561 * Open library |
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Kim Alvefur <zash@zash.se>
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diff
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|
562 */ |
b95ef295c66d
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
563 int luaopen_util_poll(lua_State *L) { |
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util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
564 luaL_checkversion(L); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
565 |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
566 luaL_newmetatable(L, STATE_MT); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
567 { |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
568 |
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util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
569 lua_pushliteral(L, STATE_MT); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
570 lua_setfield(L, -2, "__name"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
571 |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
572 lua_pushcfunction(L, Ltos); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
573 lua_setfield(L, -2, "__tostring"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
574 |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
575 lua_createtable(L, 0, 2); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
576 { |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
577 lua_pushcfunction(L, Ladd); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
578 lua_setfield(L, -2, "add"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
579 lua_pushcfunction(L, Lset); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
580 lua_setfield(L, -2, "set"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
581 lua_pushcfunction(L, Ldel); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
582 lua_setfield(L, -2, "del"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
583 lua_pushcfunction(L, Lwait); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
584 lua_setfield(L, -2, "wait"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
585 #ifdef USE_EPOLL |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
586 lua_pushcfunction(L, Lgetfd); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
587 lua_setfield(L, -2, "getfd"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
588 #endif |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
589 } |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
590 lua_setfield(L, -2, "__index"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
591 |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
592 #ifdef USE_EPOLL |
b95ef295c66d
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
593 lua_pushcfunction(L, Lgc); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
594 lua_setfield(L, -2, "__gc"); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
595 #endif |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
596 } |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
597 |
9507
33d21f020b66
net.server_epoll: Ignore ENOENT when deregitering socket
Kim Alvefur <zash@zash.se>
parents:
9506
diff
changeset
|
598 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
|
599 { |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
600 lua_pushcfunction(L, Lnew); |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
601 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
|
602 |
ae6636052be9
net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents:
9478
diff
changeset
|
603 #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
|
604 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
|
605 |
ae6636052be9
net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents:
9478
diff
changeset
|
606 push_errno(EEXIST); |
12316
6bb2f660f689
util.poll: Add support for the poll() API
Kim Alvefur <zash@zash.se>
parents:
12315
diff
changeset
|
607 push_errno(EMFILE); |
9507
33d21f020b66
net.server_epoll: Ignore ENOENT when deregitering socket
Kim Alvefur <zash@zash.se>
parents:
9506
diff
changeset
|
608 push_errno(ENOENT); |
9506
ae6636052be9
net.server_epoll: Graceful handling of registering already added socket
Kim Alvefur <zash@zash.se>
parents:
9478
diff
changeset
|
609 |
12315
cf2086a1bd45
util.poll: Expose API (epoll or select) used
Kim Alvefur <zash@zash.se>
parents:
12314
diff
changeset
|
610 lua_pushliteral(L, POLL_BACKEND); |
cf2086a1bd45
util.poll: Expose API (epoll or select) used
Kim Alvefur <zash@zash.se>
parents:
12314
diff
changeset
|
611 lua_setfield(L, -2, "api"); |
cf2086a1bd45
util.poll: Expose API (epoll or select) used
Kim Alvefur <zash@zash.se>
parents:
12314
diff
changeset
|
612 |
9313
b95ef295c66d
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
613 } |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
614 return 1; |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
615 } |
b95ef295c66d
util.poll: Import poll library with epoll and select support
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
616 |