1 | /* |
1 | /* |
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2 | * libev native API header |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
6 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
7 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
8 | * |
27 | * |
9 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
10 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
11 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
12 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
13 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
14 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
15 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
16 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
38 | */ |
29 | |
39 | |
30 | #ifndef EV_H |
40 | #ifndef EV_H__ |
31 | #define EV_H |
41 | #define EV_H__ |
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42 | |
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43 | #ifdef __cplusplus |
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44 | extern "C" { |
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45 | #endif |
32 | |
46 | |
33 | typedef double ev_tstamp; |
47 | typedef double ev_tstamp; |
34 | |
48 | |
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49 | /* these priorities are inclusive, higher priorities will be called earlier */ |
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50 | #ifndef EV_MINPRI |
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51 | # define EV_MINPRI -2 |
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52 | #endif |
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53 | #ifndef EV_MAXPRI |
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54 | # define EV_MAXPRI +2 |
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55 | #endif |
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56 | |
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57 | #ifndef EV_MULTIPLICITY |
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58 | # define EV_MULTIPLICITY 1 |
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59 | #endif |
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60 | |
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61 | #ifndef EV_PERIODIC_ENABLE |
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62 | # define EV_PERIODIC_ENABLE 1 |
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63 | #endif |
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64 | |
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65 | #ifndef EV_STAT_ENABLE |
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66 | # define EV_STAT_ENABLE 1 |
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67 | #endif |
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68 | |
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69 | #ifndef EV_IDLE_ENABLE |
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70 | # define EV_IDLE_ENABLE 1 |
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71 | #endif |
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72 | |
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73 | #ifndef EV_FORK_ENABLE |
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74 | # define EV_FORK_ENABLE 1 |
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75 | #endif |
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76 | |
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77 | #ifndef EV_EMBED_ENABLE |
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78 | # define EV_EMBED_ENABLE 1 |
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79 | #endif |
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80 | |
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81 | #ifndef EV_ASYNC_ENABLE |
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82 | # define EV_ASYNC_ENABLE 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_WALK_ENABLE |
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86 | # define EV_WALK_ENABLE 0 /* not yet */ |
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87 | #endif |
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88 | |
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89 | #ifndef EV_ATOMIC_T |
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90 | # include <signal.h> |
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91 | # define EV_ATOMIC_T sig_atomic_t volatile |
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92 | #endif |
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93 | |
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94 | /*****************************************************************************/ |
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95 | |
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96 | #if EV_STAT_ENABLE |
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97 | # ifdef _WIN32 |
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98 | # include <time.h> |
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99 | # include <sys/types.h> |
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100 | # endif |
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101 | # include <sys/stat.h> |
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102 | #endif |
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103 | |
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104 | /* support multiple event loops? */ |
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105 | #if EV_MULTIPLICITY |
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106 | struct ev_loop; |
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107 | # define EV_P struct ev_loop *loop |
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108 | # define EV_P_ EV_P, |
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109 | # define EV_A loop |
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110 | # define EV_A_ EV_A, |
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111 | # define EV_DEFAULT_UC ev_default_loop_uc () |
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112 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
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113 | # define EV_DEFAULT ev_default_loop (0) |
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114 | # define EV_DEFAULT_ EV_DEFAULT, |
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115 | #else |
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116 | # define EV_P void |
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117 | # define EV_P_ |
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118 | # define EV_A |
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119 | # define EV_A_ |
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120 | # define EV_DEFAULT |
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121 | # define EV_DEFAULT_ |
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122 | # define EV_DEFAULT_UC |
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123 | # define EV_DEFAULT_UC_ |
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124 | # undef EV_EMBED_ENABLE |
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125 | #endif |
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126 | |
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127 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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128 | # define EV_INLINE static inline |
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129 | #else |
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130 | # define EV_INLINE static |
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131 | #endif |
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132 | |
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133 | /*****************************************************************************/ |
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134 | |
35 | /* eventmask, revents, events... */ |
135 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
136 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x000000 |
137 | #define EV_NONE 0x00 /* no events */ |
38 | #define EV_READ 0x000001 |
138 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
39 | #define EV_WRITE 0x000002 |
139 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
40 | #define EV_TIMEOUT 0x000004 |
140 | #define EV__IOFDSET 0x80 /* internal use only */ |
41 | #define EV_SIGNAL 0x000008 |
141 | #define EV_IO EV_READ /* alias for type-detection */ |
42 | #define EV_IDLE 0x000010 |
142 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
43 | #define EV_CHECK 0x000020 |
143 | #define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
44 | #define EV_PREPARE 0x000040 |
144 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
45 | #define EV_CHILD 0x000080 |
145 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
46 | #define EV_ERROR 0x800000 |
146 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
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147 | #define EV_STAT 0x00001000 /* stat data changed */ |
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148 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
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149 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
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150 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
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151 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
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152 | #define EV_FORK 0x00020000 /* event loop resumed in child */ |
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153 | #define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
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154 | #define EV_CUSTOM 0x01000000 /* for use by user code */ |
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155 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
47 | |
156 | |
48 | /* can be used to add custom fields to all watchers */ |
157 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
49 | #ifndef EV_COMMON |
158 | #ifndef EV_COMMON |
50 | # define EV_COMMON void *data |
159 | # define EV_COMMON void *data; |
51 | #endif |
160 | #endif |
52 | #ifndef EV_PROTOTYPES |
161 | #ifndef EV_PROTOTYPES |
53 | # define EV_PROTOTYPES 1 |
162 | # define EV_PROTOTYPES 1 |
54 | #endif |
163 | #endif |
55 | |
164 | |
56 | #define EV_VERSION_MAJOR 1 |
165 | #define EV_VERSION_MAJOR 3 |
57 | #define EV_VERSION_MINOR 1 |
166 | #define EV_VERSION_MINOR 0 |
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167 | |
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168 | #ifndef EV_CB_DECLARE |
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169 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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170 | #endif |
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171 | #ifndef EV_CB_INVOKE |
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172 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
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173 | #endif |
58 | |
174 | |
59 | /* |
175 | /* |
60 | * struct member types: |
176 | * struct member types: |
61 | * private: you can look at them, but not change them, and they might not mean anything to you. |
177 | * private: you may look at them, but not change them, |
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178 | * and they might not mean anything to you. |
62 | * ro: can be read anytime, but only changed when the watcher isn't active |
179 | * ro: can be read anytime, but only changed when the watcher isn't active. |
63 | * rw: can be read and modified anytime, even when the watcher is active |
180 | * rw: can be read and modified anytime, even when the watcher is active. |
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181 | * |
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182 | * some internal details that might be helpful for debugging: |
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183 | * |
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184 | * active is either 0, which means the watcher is not active, |
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185 | * or the array index of the watcher (periodics, timers) |
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186 | * or the array index + 1 (most other watchers) |
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187 | * or simply 1 for watchers that aren't in some array. |
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188 | * pending is either 0, in which case the watcher isn't, |
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189 | * or the array index + 1 in the pendings array. |
64 | */ |
190 | */ |
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191 | |
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192 | #if EV_MINPRI == EV_MAXPRI |
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193 | # define EV_DECL_PRIORITY |
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194 | #else |
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195 | # define EV_DECL_PRIORITY int priority; |
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196 | #endif |
65 | |
197 | |
66 | /* shared by all watchers */ |
198 | /* shared by all watchers */ |
67 | #define EV_WATCHER(type) \ |
199 | #define EV_WATCHER(type) \ |
68 | int active; /* private */ \ |
200 | int active; /* private */ \ |
69 | int pending; /* private */ \ |
201 | int pending; /* private */ \ |
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202 | EV_DECL_PRIORITY /* private */ \ |
70 | EV_COMMON; /* rw */ \ |
203 | EV_COMMON /* rw */ \ |
71 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
204 | EV_CB_DECLARE (type) /* private */ |
72 | |
205 | |
73 | #define EV_WATCHER_LIST(type) \ |
206 | #define EV_WATCHER_LIST(type) \ |
74 | EV_WATCHER (type); \ |
207 | EV_WATCHER (type) \ |
75 | struct type *next /* private */ |
208 | struct ev_watcher_list *next; /* private */ |
76 | |
209 | |
77 | #define EV_WATCHER_TIME(type) \ |
210 | #define EV_WATCHER_TIME(type) \ |
78 | EV_WATCHER (type); \ |
211 | EV_WATCHER (type) \ |
79 | ev_tstamp at /* private */ |
212 | ev_tstamp at; /* private */ |
80 | |
213 | |
81 | /* base class, nothing to see here unless you subclass */ |
214 | /* base class, nothing to see here unless you subclass */ |
82 | struct ev_watcher { |
215 | typedef struct ev_watcher |
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216 | { |
83 | EV_WATCHER (ev_watcher); |
217 | EV_WATCHER (ev_watcher) |
84 | }; |
218 | } ev_watcher; |
85 | |
219 | |
86 | /* base class, nothing to see here unless you subclass */ |
220 | /* base class, nothing to see here unless you subclass */ |
87 | struct ev_watcher_list { |
221 | typedef struct ev_watcher_list |
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222 | { |
88 | EV_WATCHER_LIST (ev_watcher_list); |
223 | EV_WATCHER_LIST (ev_watcher_list) |
89 | }; |
224 | } ev_watcher_list; |
90 | |
225 | |
91 | /* base class, nothing to see here unless you subclass */ |
226 | /* base class, nothing to see here unless you subclass */ |
92 | struct ev_watcher_time { |
227 | typedef struct ev_watcher_time |
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228 | { |
93 | EV_WATCHER_TIME (ev_watcher_time); |
229 | EV_WATCHER_TIME (ev_watcher_time) |
94 | }; |
230 | } ev_watcher_time; |
95 | |
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96 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
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97 | struct ev_timer |
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98 | { |
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99 | EV_WATCHER_TIME (ev_timer); |
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100 | |
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101 | ev_tstamp repeat; /* rw */ |
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102 | }; |
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103 | |
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104 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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105 | struct ev_periodic |
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106 | { |
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107 | EV_WATCHER_TIME (ev_periodic); |
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108 | |
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109 | ev_tstamp interval; /* rw */ |
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110 | }; |
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111 | |
231 | |
112 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
232 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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233 | /* revent EV_READ, EV_WRITE */ |
113 | struct ev_io |
234 | typedef struct ev_io |
114 | { |
235 | { |
115 | EV_WATCHER_LIST (ev_io); |
236 | EV_WATCHER_LIST (ev_io) |
116 | |
237 | |
117 | int fd; /* ro */ |
238 | int fd; /* ro */ |
118 | int events; /* ro */ |
239 | int events; /* ro */ |
119 | }; |
240 | } ev_io; |
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241 | |
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242 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
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243 | /* revent EV_TIMEOUT */ |
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244 | typedef struct ev_timer |
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245 | { |
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246 | EV_WATCHER_TIME (ev_timer) |
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247 | |
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248 | ev_tstamp repeat; /* rw */ |
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249 | } ev_timer; |
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250 | |
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251 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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252 | /* revent EV_PERIODIC */ |
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253 | typedef struct ev_periodic |
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254 | { |
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255 | EV_WATCHER_TIME (ev_periodic) |
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256 | |
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257 | ev_tstamp offset; /* rw */ |
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258 | ev_tstamp interval; /* rw */ |
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259 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
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260 | } ev_periodic; |
120 | |
261 | |
121 | /* invoked when the given signal has been received */ |
262 | /* invoked when the given signal has been received */ |
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263 | /* revent EV_SIGNAL */ |
122 | struct ev_signal |
264 | typedef struct ev_signal |
123 | { |
265 | { |
124 | EV_WATCHER_LIST (ev_signal); |
266 | EV_WATCHER_LIST (ev_signal) |
125 | |
267 | |
126 | int signum; /* ro */ |
268 | int signum; /* ro */ |
127 | }; |
269 | } ev_signal; |
128 | |
270 | |
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271 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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272 | /* revent EV_CHILD */ |
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273 | /* does not support priorities */ |
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274 | typedef struct ev_child |
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275 | { |
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276 | EV_WATCHER_LIST (ev_child) |
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277 | |
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278 | int flags; /* private */ |
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279 | int pid; /* ro */ |
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280 | int rpid; /* rw, holds the received pid */ |
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281 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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282 | } ev_child; |
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283 | |
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284 | #if EV_STAT_ENABLE |
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285 | /* st_nlink = 0 means missing file or other error */ |
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286 | # ifdef _WIN32 |
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287 | typedef struct _stati64 ev_statdata; |
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288 | # else |
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289 | typedef struct stat ev_statdata; |
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290 | # endif |
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291 | |
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292 | /* invoked each time the stat data changes for a given path */ |
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293 | /* revent EV_STAT */ |
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294 | typedef struct ev_stat |
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295 | { |
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296 | EV_WATCHER_LIST (ev_stat) |
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297 | |
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298 | ev_timer timer; /* private */ |
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299 | ev_tstamp interval; /* ro */ |
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300 | const char *path; /* ro */ |
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301 | ev_statdata prev; /* ro */ |
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302 | ev_statdata attr; /* ro */ |
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303 | |
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304 | int wd; /* wd for inotify, fd for kqueue */ |
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305 | } ev_stat; |
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306 | #endif |
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307 | |
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308 | #if EV_IDLE_ENABLE |
129 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
309 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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310 | /* revent EV_IDLE */ |
130 | struct ev_idle |
311 | typedef struct ev_idle |
131 | { |
312 | { |
132 | EV_WATCHER (ev_idle); |
313 | EV_WATCHER (ev_idle) |
133 | }; |
314 | } ev_idle; |
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315 | #endif |
134 | |
316 | |
135 | /* invoked for each run of the mainloop, just before the blocking call */ |
317 | /* invoked for each run of the mainloop, just before the blocking call */ |
136 | /* you can still change events in any way you like */ |
318 | /* you can still change events in any way you like */ |
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319 | /* revent EV_PREPARE */ |
137 | struct ev_prepare |
320 | typedef struct ev_prepare |
138 | { |
321 | { |
139 | EV_WATCHER (ev_prepare); |
322 | EV_WATCHER (ev_prepare) |
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323 | } ev_prepare; |
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324 | |
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325 | /* invoked for each run of the mainloop, just after the blocking call */ |
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326 | /* revent EV_CHECK */ |
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327 | typedef struct ev_check |
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328 | { |
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329 | EV_WATCHER (ev_check) |
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330 | } ev_check; |
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331 | |
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332 | #if EV_FORK_ENABLE |
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333 | /* the callback gets invoked before check in the child process when a fork was detected */ |
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334 | typedef struct ev_fork |
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335 | { |
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336 | EV_WATCHER (ev_fork) |
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337 | } ev_fork; |
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338 | #endif |
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339 | |
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340 | #if EV_EMBED_ENABLE |
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341 | /* used to embed an event loop inside another */ |
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342 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
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343 | typedef struct ev_embed |
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344 | { |
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345 | EV_WATCHER (ev_embed) |
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346 | |
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347 | struct ev_loop *other; /* ro */ |
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348 | ev_io io; /* private */ |
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349 | ev_prepare prepare; /* private */ |
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350 | ev_check check; /* unused */ |
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351 | ev_timer timer; /* unused */ |
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352 | ev_periodic periodic; /* unused */ |
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353 | ev_idle idle; /* unused */ |
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354 | ev_fork fork; /* private */ |
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355 | } ev_embed; |
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356 | #endif |
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357 | |
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358 | #if EV_ASYNC_ENABLE |
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359 | /* invoked when somebody calls ev_async_send on the watcher */ |
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360 | /* revent EV_ASYNC */ |
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361 | typedef struct ev_async |
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362 | { |
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363 | EV_WATCHER (ev_async) |
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364 | |
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365 | EV_ATOMIC_T sent; /* private */ |
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366 | } ev_async; |
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367 | |
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368 | # define ev_async_pending(w) ((w)->sent + 0) |
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369 | #endif |
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370 | |
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371 | /* the presence of this union forces similar struct layout */ |
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372 | union ev_any_watcher |
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373 | { |
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374 | struct ev_watcher w; |
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375 | struct ev_watcher_list wl; |
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376 | |
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377 | struct ev_io io; |
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378 | struct ev_timer timer; |
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379 | struct ev_periodic periodic; |
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380 | struct ev_signal signal; |
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381 | struct ev_child child; |
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382 | #if EV_STAT_ENABLE |
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383 | struct ev_stat stat; |
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384 | #endif |
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385 | #if EV_IDLE_ENABLE |
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386 | struct ev_idle idle; |
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387 | #endif |
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388 | struct ev_prepare prepare; |
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389 | struct ev_check check; |
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390 | #if EV_FORK_ENABLE |
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391 | struct ev_fork fork; |
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392 | #endif |
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393 | #if EV_EMBED_ENABLE |
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394 | struct ev_embed embed; |
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395 | #endif |
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396 | #if EV_ASYNC_ENABLE |
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397 | struct ev_async async; |
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398 | #endif |
140 | }; |
399 | }; |
141 | |
400 | |
142 | /* invoked for each run of the mainloop, just after the blocking call */ |
401 | /* bits for ev_default_loop and ev_loop_new */ |
143 | struct ev_check |
402 | /* the default */ |
144 | { |
403 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
145 | EV_WATCHER (ev_check); |
404 | /* flag bits */ |
146 | }; |
405 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
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406 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
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407 | /* method bits to be ored together */ |
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408 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
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409 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
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410 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
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411 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
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412 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
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413 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
147 | |
414 | |
148 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
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149 | struct ev_child |
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150 | { |
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151 | EV_WATCHER_LIST (ev_child); |
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152 | |
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153 | int pid; /* ro */ |
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154 | int status; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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155 | }; |
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156 | |
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157 | #define EVMETHOD_NONE 0 |
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158 | #define EVMETHOD_SELECT 1 |
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159 | #define EVMETHOD_EPOLL 2 |
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160 | #if EV_PROTOTYPES |
415 | #if EV_PROTOTYPES |
161 | extern int ev_method; |
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162 | int ev_init (int flags); /* returns ev_method */ |
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163 | int ev_version_major (void); |
416 | int ev_version_major (void); |
164 | int ev_version_minor (void); |
417 | int ev_version_minor (void); |
165 | |
418 | |
166 | /* these three calls are suitable for plugging into pthread_atfork */ |
419 | unsigned int ev_supported_backends (void); |
167 | void ev_prefork (void); |
420 | unsigned int ev_recommended_backends (void); |
168 | void ev_postfork_parent (void); |
421 | unsigned int ev_embeddable_backends (void); |
169 | void ev_postfork_child (void); |
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170 | |
422 | |
171 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
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172 | ev_tstamp ev_time (void); |
423 | ev_tstamp ev_time (void); |
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424 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
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425 | |
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426 | /* Sets the allocation function to use, works like realloc. |
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427 | * It is used to allocate and free memory. |
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428 | * If it returns zero when memory needs to be allocated, the library might abort |
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429 | * or take some potentially destructive action. |
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430 | * The default is your system realloc function. |
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431 | */ |
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432 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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433 | |
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434 | /* set the callback function to call on a |
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435 | * retryable syscall error |
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436 | * (such as failed select, poll, epoll_wait) |
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437 | */ |
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438 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
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439 | |
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440 | #if EV_MULTIPLICITY |
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441 | EV_INLINE struct ev_loop * |
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442 | ev_default_loop_uc (void) |
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443 | { |
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444 | extern struct ev_loop *ev_default_loop_ptr; |
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445 | |
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446 | return ev_default_loop_ptr; |
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447 | } |
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448 | |
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449 | /* the default loop is the only one that handles signals and child watchers */ |
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450 | /* you can call this as often as you like */ |
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451 | EV_INLINE struct ev_loop * |
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452 | ev_default_loop (unsigned int flags) |
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453 | { |
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454 | struct ev_loop *loop = ev_default_loop_uc (); |
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455 | |
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456 | if (!loop) |
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457 | { |
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458 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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459 | |
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460 | loop = ev_default_loop_init (flags); |
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461 | } |
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462 | |
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463 | return loop; |
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464 | } |
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465 | |
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466 | /* create and destroy alternative loops that don't handle signals */ |
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467 | struct ev_loop *ev_loop_new (unsigned int flags); |
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468 | void ev_loop_destroy (EV_P); |
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469 | void ev_loop_fork (EV_P); |
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470 | |
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471 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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472 | |
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473 | #else |
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474 | |
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475 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
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476 | |
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477 | EV_INLINE ev_tstamp |
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478 | ev_now (void) |
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479 | { |
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480 | extern ev_tstamp ev_rt_now; |
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481 | |
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482 | return ev_rt_now; |
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483 | } |
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484 | #endif /* multiplicity */ |
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485 | |
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486 | EV_INLINE int |
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487 | ev_is_default_loop (EV_P) |
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488 | { |
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489 | #if EV_MULTIPLICITY |
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490 | extern struct ev_loop *ev_default_loop_ptr; |
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491 | |
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492 | return !!(EV_A == ev_default_loop_ptr); |
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493 | #else |
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494 | return 1; |
173 | #endif |
495 | #endif |
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496 | } |
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497 | |
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498 | void ev_default_destroy (void); /* destroy the default loop */ |
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499 | /* this needs to be called after fork, to duplicate the default loop */ |
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500 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
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501 | /* you can call it in either the parent or the child */ |
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502 | /* you can actually call it at any time, anywhere :) */ |
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503 | void ev_default_fork (void); |
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504 | |
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505 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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506 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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507 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
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508 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
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509 | |
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510 | void ev_now_update (EV_P); /* update event loop time */ |
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511 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
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512 | |
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513 | #if EV_WALK_ENABLE |
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514 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
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515 | /* callback on every such watcher. The callback might stop the watcher, */ |
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516 | /* but do nothing else with the loop */ |
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517 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
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518 | #endif |
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519 | |
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520 | #endif /* prototypes */ |
174 | |
521 | |
175 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
522 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
176 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
523 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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524 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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525 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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526 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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527 | |
177 | #if EV_PROTOTYPES |
528 | #if EV_PROTOTYPES |
178 | void ev_loop (int flags); |
529 | void ev_loop (EV_P_ int flags); |
179 | extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
530 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
180 | |
531 | |
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532 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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533 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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534 | |
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535 | /* |
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536 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
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537 | * keeps one reference. if you have a long-runing watcher you never unregister that |
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538 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
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539 | */ |
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540 | void ev_ref (EV_P); |
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541 | void ev_unref (EV_P); |
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542 | |
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543 | /* |
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544 | * stop/start the timer handling. |
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545 | */ |
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546 | void ev_suspend (EV_P); |
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547 | void ev_resume (EV_P); |
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548 | |
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549 | /* |
181 | /* convinience function, wait for a single event, without registering an event watcher */ |
550 | * convenience function, wait for a single event, without registering an event watcher |
182 | /* if timeout is < 0, do wait indefinitely */ |
551 | * if timeout is < 0, do wait indefinitely |
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552 | */ |
183 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
553 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
184 | #endif |
554 | #endif |
185 | |
555 | |
186 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
556 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
187 | /* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ |
557 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
188 | #define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
558 | #define ev_init(ev,cb_) do { \ |
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559 | ((ev_watcher *)(void *)(ev))->active = \ |
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560 | ((ev_watcher *)(void *)(ev))->pending = 0; \ |
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561 | ev_set_priority ((ev), 0); \ |
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562 | ev_set_cb ((ev), cb_); \ |
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563 | } while (0) |
189 | |
564 | |
190 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
565 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
191 | #define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
566 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
192 | #define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
567 | #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
193 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
568 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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569 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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570 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
194 | #define evidle_set(ev) /* nop, yes, this is a serious in-joke */ |
571 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
195 | #define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ |
572 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
196 | #define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ |
573 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
197 | #define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
574 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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575 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
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576 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
198 | |
577 | |
199 | #define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) |
578 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
200 | #define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) |
579 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
201 | #define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) |
580 | #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
202 | #define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) |
581 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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582 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
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583 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
203 | #define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) |
584 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
204 | #define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) |
585 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
205 | #define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) |
586 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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587 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
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588 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
206 | #define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) |
589 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
207 | |
590 | |
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591 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
208 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
592 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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593 | |
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594 | #define ev_cb(ev) (ev)->cb /* rw */ |
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595 | |
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596 | #if EV_MINPRI == EV_MAXPRI |
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597 | # define ev_priority(ev) ((ev), EV_MINPRI) |
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598 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
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599 | #else |
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600 | # define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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601 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
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602 | #endif |
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603 | |
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604 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
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605 | |
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606 | #ifndef ev_set_cb |
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607 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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608 | #endif |
209 | |
609 | |
210 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
610 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
211 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
611 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
212 | #if EV_PROTOTYPES |
612 | #if EV_PROTOTYPES |
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613 | |
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614 | /* feeds an event into a watcher as if the event actually occured */ |
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615 | /* accepts any ev_watcher type */ |
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616 | void ev_feed_event (EV_P_ void *w, int revents); |
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617 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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618 | void ev_feed_signal_event (EV_P_ int signum); |
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619 | void ev_invoke (EV_P_ void *w, int revents); |
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620 | int ev_clear_pending (EV_P_ void *w); |
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621 | |
213 | void evio_start (struct ev_io *w); |
622 | void ev_io_start (EV_P_ ev_io *w); |
214 | void evio_stop (struct ev_io *w); |
623 | void ev_io_stop (EV_P_ ev_io *w); |
215 | |
624 | |
216 | void evtimer_start (struct ev_timer *w); |
625 | void ev_timer_start (EV_P_ ev_timer *w); |
217 | void evtimer_stop (struct ev_timer *w); |
626 | void ev_timer_stop (EV_P_ ev_timer *w); |
218 | void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
627 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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628 | void ev_timer_again (EV_P_ ev_timer *w); |
219 | |
629 | |
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630 | #if EV_PERIODIC_ENABLE |
220 | void evperiodic_start (struct ev_periodic *w); |
631 | void ev_periodic_start (EV_P_ ev_periodic *w); |
221 | void evperiodic_stop (struct ev_periodic *w); |
632 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
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633 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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634 | #endif |
222 | |
635 | |
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636 | /* only supported in the default loop */ |
223 | void evsignal_start (struct ev_signal *w); |
637 | void ev_signal_start (EV_P_ ev_signal *w); |
224 | void evsignal_stop (struct ev_signal *w); |
638 | void ev_signal_stop (EV_P_ ev_signal *w); |
225 | |
639 | |
226 | void evidle_start (struct ev_idle *w); |
640 | /* only supported in the default loop */ |
227 | void evidle_stop (struct ev_idle *w); |
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228 | |
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229 | void evprepare_start (struct ev_prepare *w); |
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230 | void evprepare_stop (struct ev_prepare *w); |
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231 | |
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232 | void evcheck_start (struct ev_check *w); |
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233 | void evcheck_stop (struct ev_check *w); |
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234 | |
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235 | void evchild_start (struct ev_child *w); |
641 | void ev_child_start (EV_P_ ev_child *w); |
236 | void evchild_stop (struct ev_child *w); |
642 | void ev_child_stop (EV_P_ ev_child *w); |
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643 | |
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644 | # if EV_STAT_ENABLE |
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645 | void ev_stat_start (EV_P_ ev_stat *w); |
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646 | void ev_stat_stop (EV_P_ ev_stat *w); |
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647 | void ev_stat_stat (EV_P_ ev_stat *w); |
237 | #endif |
648 | # endif |
238 | |
649 | |
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650 | # if EV_IDLE_ENABLE |
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651 | void ev_idle_start (EV_P_ ev_idle *w); |
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652 | void ev_idle_stop (EV_P_ ev_idle *w); |
239 | #endif |
653 | # endif |
240 | |
654 | |
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655 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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656 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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657 | |
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658 | void ev_check_start (EV_P_ ev_check *w); |
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659 | void ev_check_stop (EV_P_ ev_check *w); |
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660 | |
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|
661 | # if EV_FORK_ENABLE |
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662 | void ev_fork_start (EV_P_ ev_fork *w); |
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663 | void ev_fork_stop (EV_P_ ev_fork *w); |
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664 | # endif |
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665 | |
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666 | # if EV_EMBED_ENABLE |
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667 | /* only supported when loop to be embedded is in fact embeddable */ |
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668 | void ev_embed_start (EV_P_ ev_embed *w); |
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669 | void ev_embed_stop (EV_P_ ev_embed *w); |
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670 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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671 | # endif |
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|
672 | |
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673 | # if EV_ASYNC_ENABLE |
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674 | void ev_async_start (EV_P_ ev_async *w); |
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675 | void ev_async_stop (EV_P_ ev_async *w); |
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676 | void ev_async_send (EV_P_ ev_async *w); |
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|
677 | # endif |
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678 | |
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679 | #endif |
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680 | |
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681 | #ifdef __cplusplus |
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682 | } |
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683 | #endif |
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684 | |
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685 | #endif |
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686 | |