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_ |
32 | |
42 | |
33 | #ifdef __cplusplus |
43 | #ifdef __cplusplus |
34 | extern "C" { |
44 | extern "C" { |
35 | #endif |
45 | #endif |
36 | |
46 | |
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… | |
54 | |
64 | |
55 | #ifndef EV_STAT_ENABLE |
65 | #ifndef EV_STAT_ENABLE |
56 | # define EV_STAT_ENABLE 1 |
66 | # define EV_STAT_ENABLE 1 |
57 | #endif |
67 | #endif |
58 | |
68 | |
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69 | #ifndef EV_PREPARE_ENABLE |
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70 | # define EV_PREPARE_ENABLE 1 |
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71 | #endif |
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72 | |
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73 | #ifndef EV_CHECK_ENABLE |
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74 | # define EV_CHECK_ENABLE 1 |
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75 | #endif |
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76 | |
59 | #ifndef EV_IDLE_ENABLE |
77 | #ifndef EV_IDLE_ENABLE |
60 | # define EV_IDLE_ENABLE 1 |
78 | # define EV_IDLE_ENABLE 1 |
61 | #endif |
79 | #endif |
62 | |
80 | |
63 | #ifndef EV_FORK_ENABLE |
81 | #ifndef EV_FORK_ENABLE |
64 | # define EV_FORK_ENABLE 1 |
82 | # define EV_FORK_ENABLE 1 |
65 | #endif |
83 | #endif |
66 | |
84 | |
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85 | #ifndef EV_SIGNAL_ENABLE |
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86 | # define EV_SIGNAL_ENABLE 1 |
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87 | #endif |
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88 | |
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89 | #ifndef EV_CHILD_ENABLE |
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90 | # ifdef _WIN32 |
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91 | # define EV_CHILD_ENABLE 0 |
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92 | # else |
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93 | # define EV_CHILD_ENABLE 1 |
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94 | #endif |
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95 | #endif |
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96 | |
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97 | #ifndef EV_ASYNC_ENABLE |
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98 | # define EV_ASYNC_ENABLE 1 |
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99 | #endif |
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100 | |
67 | #ifndef EV_EMBED_ENABLE |
101 | #ifndef EV_EMBED_ENABLE |
68 | # define EV_EMBED_ENABLE 1 |
102 | # define EV_EMBED_ENABLE 1 |
69 | #endif |
103 | #endif |
70 | |
104 | |
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105 | #ifndef EV_WALK_ENABLE |
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106 | # define EV_WALK_ENABLE 0 /* not yet */ |
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107 | #endif |
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108 | |
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109 | #ifndef EV_ATOMIC_T |
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110 | # include <signal.h> |
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111 | # define EV_ATOMIC_T sig_atomic_t volatile |
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112 | #endif |
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113 | |
71 | /*****************************************************************************/ |
114 | /*****************************************************************************/ |
72 | |
115 | |
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116 | #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE |
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117 | # undef EV_SIGNAL_ENABLE |
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118 | # define EV_SIGNAL_ENABLE 1 |
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119 | #endif |
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120 | |
73 | #if EV_STAT_ENABLE |
121 | #if EV_STAT_ENABLE |
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122 | # ifdef _WIN32 |
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123 | # include <time.h> |
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124 | # include <sys/types.h> |
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125 | # endif |
74 | # include <sys/stat.h> |
126 | # include <sys/stat.h> |
75 | #endif |
127 | #endif |
76 | |
128 | |
77 | /* support multiple event loops? */ |
129 | /* support multiple event loops? */ |
78 | #if EV_MULTIPLICITY |
130 | #if EV_MULTIPLICITY |
79 | struct ev_loop; |
131 | struct ev_loop; |
80 | # define EV_P struct ev_loop *loop |
132 | # define EV_P struct ev_loop *loop |
81 | # define EV_P_ EV_P, |
133 | # define EV_P_ EV_P, |
82 | # define EV_A loop |
134 | # define EV_A loop |
83 | # define EV_A_ EV_A, |
135 | # define EV_A_ EV_A, |
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136 | # define EV_DEFAULT_UC ev_default_loop_uc () |
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137 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
84 | # define EV_DEFAULT ev_default_loop (0) |
138 | # define EV_DEFAULT ev_default_loop (0) |
85 | # define EV_DEFAULT_ EV_DEFAULT, |
139 | # define EV_DEFAULT_ EV_DEFAULT, |
86 | #else |
140 | #else |
87 | # define EV_P void |
141 | # define EV_P void |
88 | # define EV_P_ |
142 | # define EV_P_ |
89 | # define EV_A |
143 | # define EV_A |
90 | # define EV_A_ |
144 | # define EV_A_ |
91 | # define EV_DEFAULT |
145 | # define EV_DEFAULT |
92 | # define EV_DEFAULT_ |
146 | # define EV_DEFAULT_ |
93 | |
147 | # define EV_DEFAULT_UC |
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148 | # define EV_DEFAULT_UC_ |
94 | # undef EV_EMBED_ENABLE |
149 | # undef EV_EMBED_ENABLE |
95 | #endif |
150 | #endif |
96 | |
151 | |
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152 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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153 | # define EV_INLINE static inline |
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154 | #else |
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155 | # define EV_INLINE static |
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156 | #endif |
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157 | |
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158 | /*****************************************************************************/ |
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159 | |
97 | /* eventmask, revents, events... */ |
160 | /* eventmask, revents, events... */ |
98 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
161 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
99 | #define EV_NONE 0x00L /* no events */ |
162 | #define EV_NONE 0x00 /* no events */ |
100 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
163 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
101 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
164 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
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165 | #define EV__IOFDSET 0x80 /* internal use only */ |
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166 | #define EV_IO EV_READ /* alias for type-detection */ |
102 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
167 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
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168 | #define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
103 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
169 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
104 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
170 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
105 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
171 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
106 | #define EV_STAT 0x00001000L /* stat data changed */ |
172 | #define EV_STAT 0x00001000 /* stat data changed */ |
107 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
173 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
108 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
174 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
109 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
175 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
110 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
176 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
111 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
177 | #define EV_FORK 0x00020000 /* event loop resumed in child */ |
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178 | #define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
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179 | #define EV_CUSTOM 0x01000000 /* for use by user code */ |
112 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
180 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
113 | |
181 | |
114 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
182 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
115 | #ifndef EV_COMMON |
183 | #ifndef EV_COMMON |
116 | # define EV_COMMON void *data; |
184 | # define EV_COMMON void *data; |
117 | #endif |
185 | #endif |
118 | #ifndef EV_PROTOTYPES |
186 | #ifndef EV_PROTOTYPES |
119 | # define EV_PROTOTYPES 1 |
187 | # define EV_PROTOTYPES 1 |
120 | #endif |
188 | #endif |
121 | |
189 | |
122 | #define EV_VERSION_MAJOR 1 |
190 | #define EV_VERSION_MAJOR 3 |
123 | #define EV_VERSION_MINOR 1 |
191 | #define EV_VERSION_MINOR 9 |
124 | |
192 | |
125 | #ifndef EV_CB_DECLARE |
193 | #ifndef EV_CB_DECLARE |
126 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
194 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
127 | #endif |
195 | #endif |
128 | #ifndef EV_CB_INVOKE |
196 | #ifndef EV_CB_INVOKE |
129 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
197 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
130 | #endif |
198 | #endif |
131 | |
199 | |
132 | /* |
200 | /* |
133 | * struct member types: |
201 | * struct member types: |
134 | * private: you can look at them, but not change them, and they might not mean anything to you. |
202 | * private: you may look at them, but not change them, |
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203 | * and they might not mean anything to you. |
135 | * ro: can be read anytime, but only changed when the watcher isn't active |
204 | * ro: can be read anytime, but only changed when the watcher isn't active. |
136 | * rw: can be read and modified anytime, even when the watcher is active |
205 | * rw: can be read and modified anytime, even when the watcher is active. |
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206 | * |
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207 | * some internal details that might be helpful for debugging: |
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208 | * |
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209 | * active is either 0, which means the watcher is not active, |
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210 | * or the array index of the watcher (periodics, timers) |
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211 | * or the array index + 1 (most other watchers) |
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212 | * or simply 1 for watchers that aren't in some array. |
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213 | * pending is either 0, in which case the watcher isn't, |
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214 | * or the array index + 1 in the pendings array. |
137 | */ |
215 | */ |
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216 | |
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217 | #if EV_MINPRI == EV_MAXPRI |
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218 | # define EV_DECL_PRIORITY |
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219 | #else |
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220 | # define EV_DECL_PRIORITY int priority; |
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221 | #endif |
138 | |
222 | |
139 | /* shared by all watchers */ |
223 | /* shared by all watchers */ |
140 | #define EV_WATCHER(type) \ |
224 | #define EV_WATCHER(type) \ |
141 | int active; /* private */ \ |
225 | int active; /* private */ \ |
142 | int pending; /* private */ \ |
226 | int pending; /* private */ \ |
143 | int priority; /* private */ \ |
227 | EV_DECL_PRIORITY /* private */ \ |
144 | EV_COMMON /* rw */ \ |
228 | EV_COMMON /* rw */ \ |
145 | EV_CB_DECLARE (type) /* private */ |
229 | EV_CB_DECLARE (type) /* private */ |
146 | |
230 | |
147 | #define EV_WATCHER_LIST(type) \ |
231 | #define EV_WATCHER_LIST(type) \ |
148 | EV_WATCHER (type) \ |
232 | EV_WATCHER (type) \ |
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193 | /* revent EV_PERIODIC */ |
277 | /* revent EV_PERIODIC */ |
194 | typedef struct ev_periodic |
278 | typedef struct ev_periodic |
195 | { |
279 | { |
196 | EV_WATCHER_TIME (ev_periodic) |
280 | EV_WATCHER_TIME (ev_periodic) |
197 | |
281 | |
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282 | ev_tstamp offset; /* rw */ |
198 | ev_tstamp interval; /* rw */ |
283 | ev_tstamp interval; /* rw */ |
199 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
284 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
200 | } ev_periodic; |
285 | } ev_periodic; |
201 | |
286 | |
202 | /* invoked when the given signal has been received */ |
287 | /* invoked when the given signal has been received */ |
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213 | /* does not support priorities */ |
298 | /* does not support priorities */ |
214 | typedef struct ev_child |
299 | typedef struct ev_child |
215 | { |
300 | { |
216 | EV_WATCHER_LIST (ev_child) |
301 | EV_WATCHER_LIST (ev_child) |
217 | |
302 | |
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303 | int flags; /* private */ |
218 | int pid; /* ro */ |
304 | int pid; /* ro */ |
219 | int rpid; /* rw, holds the received pid */ |
305 | int rpid; /* rw, holds the received pid */ |
220 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
306 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
221 | } ev_child; |
307 | } ev_child; |
222 | |
308 | |
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281 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
367 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
282 | typedef struct ev_embed |
368 | typedef struct ev_embed |
283 | { |
369 | { |
284 | EV_WATCHER (ev_embed) |
370 | EV_WATCHER (ev_embed) |
285 | |
371 | |
286 | ev_io io; /* private */ |
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287 | struct ev_loop *loop; /* ro */ |
372 | struct ev_loop *other; /* ro */ |
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373 | ev_io io; /* private */ |
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374 | ev_prepare prepare; /* private */ |
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375 | ev_check check; /* unused */ |
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376 | ev_timer timer; /* unused */ |
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377 | ev_periodic periodic; /* unused */ |
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378 | ev_idle idle; /* unused */ |
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379 | ev_fork fork; /* private */ |
288 | } ev_embed; |
380 | } ev_embed; |
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381 | #endif |
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382 | |
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383 | #if EV_ASYNC_ENABLE |
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384 | /* invoked when somebody calls ev_async_send on the watcher */ |
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385 | /* revent EV_ASYNC */ |
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386 | typedef struct ev_async |
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387 | { |
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388 | EV_WATCHER (ev_async) |
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389 | |
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390 | EV_ATOMIC_T sent; /* private */ |
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391 | } ev_async; |
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392 | |
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393 | # define ev_async_pending(w) (+(w)->sent) |
289 | #endif |
394 | #endif |
290 | |
395 | |
291 | /* the presence of this union forces similar struct layout */ |
396 | /* the presence of this union forces similar struct layout */ |
292 | union ev_any_watcher |
397 | union ev_any_watcher |
293 | { |
398 | { |
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311 | struct ev_fork fork; |
416 | struct ev_fork fork; |
312 | #endif |
417 | #endif |
313 | #if EV_EMBED_ENABLE |
418 | #if EV_EMBED_ENABLE |
314 | struct ev_embed embed; |
419 | struct ev_embed embed; |
315 | #endif |
420 | #endif |
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421 | #if EV_ASYNC_ENABLE |
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422 | struct ev_async async; |
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423 | #endif |
316 | }; |
424 | }; |
317 | |
425 | |
318 | /* bits for ev_default_loop and ev_loop_new */ |
426 | /* bits for ev_default_loop and ev_loop_new */ |
319 | /* the default */ |
427 | /* the default */ |
320 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
428 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
321 | /* flag bits */ |
429 | /* flag bits */ |
322 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
430 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
323 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
431 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
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432 | /* debugging/feature disable */ |
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433 | #define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */ |
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434 | #define EVFLAG_NOSIGFD 0 /* compatibility to pre-3.9 */ |
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435 | #define EVFLAG_SIGNALFD 0x00200000U /* attempt to use signalfd */ |
324 | /* method bits to be ored together */ |
436 | /* method bits to be ored together */ |
325 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
437 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
326 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
438 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
327 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
439 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
328 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
440 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
329 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
441 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
330 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
442 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
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443 | #define EVBACKEND_ALL 0x0000003FU |
331 | |
444 | |
332 | #if EV_PROTOTYPES |
445 | #if EV_PROTOTYPES |
333 | int ev_version_major (void); |
446 | int ev_version_major (void); |
334 | int ev_version_minor (void); |
447 | int ev_version_minor (void); |
335 | |
448 | |
336 | unsigned int ev_supported_backends (void); |
449 | unsigned int ev_supported_backends (void); |
337 | unsigned int ev_recommended_backends (void); |
450 | unsigned int ev_recommended_backends (void); |
338 | unsigned int ev_embeddable_backends (void); |
451 | unsigned int ev_embeddable_backends (void); |
339 | |
452 | |
340 | ev_tstamp ev_time (void); |
453 | ev_tstamp ev_time (void); |
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454 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
341 | |
455 | |
342 | /* Sets the allocation function to use, works like realloc. |
456 | /* Sets the allocation function to use, works like realloc. |
343 | * It is used to allocate and free memory. |
457 | * It is used to allocate and free memory. |
344 | * If it returns zero when memory needs to be allocated, the library might abort |
458 | * If it returns zero when memory needs to be allocated, the library might abort |
345 | * or take some potentially destructive action. |
459 | * or take some potentially destructive action. |
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351 | * retryable syscall error |
465 | * retryable syscall error |
352 | * (such as failed select, poll, epoll_wait) |
466 | * (such as failed select, poll, epoll_wait) |
353 | */ |
467 | */ |
354 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
468 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
355 | |
469 | |
356 | # if EV_MULTIPLICITY |
470 | #if EV_MULTIPLICITY |
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471 | EV_INLINE struct ev_loop * |
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472 | ev_default_loop_uc (void) |
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473 | { |
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474 | extern struct ev_loop *ev_default_loop_ptr; |
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475 | |
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476 | return ev_default_loop_ptr; |
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477 | } |
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478 | |
357 | /* the default loop is the only one that handles signals and child watchers */ |
479 | /* the default loop is the only one that handles signals and child watchers */ |
358 | /* you can call this as often as you like */ |
480 | /* you can call this as often as you like */ |
359 | static struct ev_loop * |
481 | EV_INLINE struct ev_loop * |
360 | ev_default_loop (unsigned int flags) |
482 | ev_default_loop (unsigned int flags) |
361 | { |
483 | { |
362 | extern struct ev_loop *ev_default_loop_ptr; |
484 | struct ev_loop *loop = ev_default_loop_uc (); |
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485 | |
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486 | if (!loop) |
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487 | { |
363 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
488 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
364 | |
489 | |
365 | if (!ev_default_loop_ptr) |
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366 | ev_default_loop_init (flags); |
490 | loop = ev_default_loop_init (flags); |
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491 | } |
367 | |
492 | |
368 | return ev_default_loop_ptr; |
493 | return loop; |
369 | } |
494 | } |
370 | |
495 | |
371 | /* create and destroy alternative loops that don't handle signals */ |
496 | /* create and destroy alternative loops that don't handle signals */ |
372 | struct ev_loop *ev_loop_new (unsigned int flags); |
497 | struct ev_loop *ev_loop_new (unsigned int flags); |
373 | void ev_loop_destroy (EV_P); |
498 | void ev_loop_destroy (EV_P); |
374 | void ev_loop_fork (EV_P); |
499 | void ev_loop_fork (EV_P); |
375 | |
500 | |
376 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
501 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
377 | |
502 | |
378 | # else |
503 | #else |
379 | |
504 | |
380 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
505 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
381 | |
506 | |
382 | static ev_tstamp |
507 | EV_INLINE ev_tstamp |
383 | ev_now (void) |
508 | ev_now (void) |
384 | { |
509 | { |
385 | extern ev_tstamp ev_rt_now; |
510 | extern ev_tstamp ev_rt_now; |
386 | |
511 | |
387 | return ev_rt_now; |
512 | return ev_rt_now; |
388 | } |
513 | } |
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514 | #endif /* multiplicity */ |
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515 | |
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516 | EV_INLINE int |
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517 | ev_is_default_loop (EV_P) |
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518 | { |
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519 | #if EV_MULTIPLICITY |
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520 | extern struct ev_loop *ev_default_loop_ptr; |
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521 | |
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522 | return !!(EV_A == ev_default_loop_ptr); |
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523 | #else |
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524 | return 1; |
389 | # endif |
525 | #endif |
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526 | } |
390 | |
527 | |
391 | void ev_default_destroy (void); /* destroy the default loop */ |
528 | void ev_default_destroy (void); /* destroy the default loop */ |
392 | /* this needs to be called after fork, to duplicate the default loop */ |
529 | /* this needs to be called after fork, to duplicate the default loop */ |
393 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
530 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
394 | /* you can call it in either the parent or the child */ |
531 | /* you can call it in either the parent or the child */ |
395 | /* you can actually call it at any time, anywhere :) */ |
532 | /* you can actually call it at any time, anywhere :) */ |
396 | void ev_default_fork (void); |
533 | void ev_default_fork (void); |
397 | |
534 | |
398 | unsigned int ev_backend (EV_P); |
535 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
399 | unsigned int ev_loop_count (EV_P); |
536 | |
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537 | void ev_now_update (EV_P); /* update event loop time */ |
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538 | |
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539 | #if EV_WALK_ENABLE |
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540 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
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541 | /* callback on every such watcher. The callback might stop the watcher, */ |
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542 | /* but do nothing else with the loop */ |
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543 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
400 | #endif |
544 | #endif |
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545 | |
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546 | #endif /* prototypes */ |
401 | |
547 | |
402 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
548 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
403 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
549 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
404 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
550 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
405 | #define EVUNLOOP_ONE 1 /* unloop once */ |
551 | #define EVUNLOOP_ONE 1 /* unloop once */ |
… | |
… | |
409 | void ev_loop (EV_P_ int flags); |
555 | void ev_loop (EV_P_ int flags); |
410 | 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 */ |
556 | 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 */ |
411 | |
557 | |
412 | /* |
558 | /* |
413 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
559 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
414 | * keeps one reference. if you have a long-runing watcher you never unregister that |
560 | * keeps one reference. if you have a long-running watcher you never unregister that |
415 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
561 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
416 | */ |
562 | */ |
417 | void ev_ref (EV_P); |
563 | void ev_ref (EV_P); |
418 | void ev_unref (EV_P); |
564 | void ev_unref (EV_P); |
419 | |
565 | |
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566 | /* |
420 | /* convinience function, wait for a single event, without registering an event watcher */ |
567 | * convenience function, wait for a single event, without registering an event watcher |
421 | /* if timeout is < 0, do wait indefinitely */ |
568 | * if timeout is < 0, do wait indefinitely |
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569 | */ |
422 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
570 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
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571 | |
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572 | # if EV_MINIMAL < 2 |
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573 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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574 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
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575 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
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576 | |
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577 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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578 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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579 | |
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580 | /* advanced stuff for threading etc. support, see docs */ |
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581 | void ev_set_userdata (EV_P_ void *data); |
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582 | void *ev_userdata (EV_P); |
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583 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
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584 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
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585 | |
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586 | unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
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587 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
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588 | |
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589 | /* |
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590 | * stop/start the timer handling. |
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591 | */ |
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592 | void ev_suspend (EV_P); |
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593 | void ev_resume (EV_P); |
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594 | #endif |
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595 | |
423 | #endif |
596 | #endif |
424 | |
597 | |
425 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
598 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
426 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
599 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
427 | #define ev_init(ev,cb_) do { \ |
600 | #define ev_init(ev,cb_) do { \ |
428 | ((ev_watcher *)(void *)(ev))->active = \ |
601 | ((ev_watcher *)(void *)(ev))->active = \ |
429 | ((ev_watcher *)(void *)(ev))->pending = \ |
602 | ((ev_watcher *)(void *)(ev))->pending = 0; \ |
430 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
603 | ev_set_priority ((ev), 0); \ |
431 | ev_set_cb ((ev), cb_); \ |
604 | ev_set_cb ((ev), cb_); \ |
432 | } while (0) |
605 | } while (0) |
433 | |
606 | |
434 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
607 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
435 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
608 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
436 | #define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
609 | #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
437 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
610 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
438 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
611 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
439 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
612 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
440 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
613 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
441 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
614 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
442 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
615 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
443 | #define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) |
616 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
444 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
617 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
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618 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
445 | |
619 | |
446 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
620 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
447 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
621 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
448 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
622 | #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
449 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
623 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
450 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
624 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
451 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_path_set ((ev),(path),(interval)); } while (0) |
625 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
452 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
626 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
453 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
627 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
454 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
628 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
455 | #define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) |
629 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
456 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
630 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
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631 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
457 | |
632 | |
458 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
633 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
459 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
634 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
460 | |
635 | |
461 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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462 | #define ev_cb(ev) (ev)->cb /* rw */ |
636 | #define ev_cb(ev) (ev)->cb /* rw */ |
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637 | |
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638 | #if EV_MINPRI == EV_MAXPRI |
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639 | # define ev_priority(ev) ((ev), EV_MINPRI) |
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640 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
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641 | #else |
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642 | # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
463 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
643 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
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644 | #endif |
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645 | |
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646 | #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
464 | |
647 | |
465 | #ifndef ev_set_cb |
648 | #ifndef ev_set_cb |
466 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
649 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
467 | #endif |
650 | #endif |
468 | |
651 | |
469 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
652 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
470 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
653 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
471 | #if EV_PROTOTYPES |
654 | #if EV_PROTOTYPES |
472 | |
655 | |
473 | /* feeds an event into a watcher as if the event actually occured */ |
656 | /* feeds an event into a watcher as if the event actually occured */ |
474 | /* accepts any ev_watcher type */ |
657 | /* accepts any ev_watcher type */ |
475 | void ev_feed_event (EV_P_ void *w, int revents); |
658 | void ev_feed_event (EV_P_ void *w, int revents); |
476 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
659 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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660 | #if EV_SIGNAL_ENABLE |
477 | void ev_feed_signal_event (EV_P_ int signum); |
661 | void ev_feed_signal_event (EV_P_ int signum); |
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662 | #endif |
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663 | void ev_invoke (EV_P_ void *w, int revents); |
478 | void ev_clear_pending (EV_P_ void *w, int invoke); |
664 | int ev_clear_pending (EV_P_ void *w); |
479 | |
665 | |
480 | void ev_io_start (EV_P_ ev_io *w); |
666 | void ev_io_start (EV_P_ ev_io *w); |
481 | void ev_io_stop (EV_P_ ev_io *w); |
667 | void ev_io_stop (EV_P_ ev_io *w); |
482 | |
668 | |
483 | void ev_timer_start (EV_P_ ev_timer *w); |
669 | void ev_timer_start (EV_P_ ev_timer *w); |
484 | void ev_timer_stop (EV_P_ ev_timer *w); |
670 | void ev_timer_stop (EV_P_ ev_timer *w); |
485 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
671 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
486 | void ev_timer_again (EV_P_ ev_timer *w); |
672 | void ev_timer_again (EV_P_ ev_timer *w); |
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673 | /* return remaining time */ |
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674 | ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); |
487 | |
675 | |
488 | #if EV_PERIODIC_ENABLE |
676 | #if EV_PERIODIC_ENABLE |
489 | void ev_periodic_start (EV_P_ ev_periodic *w); |
677 | void ev_periodic_start (EV_P_ ev_periodic *w); |
490 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
678 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
491 | void ev_periodic_again (EV_P_ ev_periodic *w); |
679 | void ev_periodic_again (EV_P_ ev_periodic *w); |
492 | #endif |
680 | #endif |
493 | |
681 | |
494 | /* only supported in the default loop */ |
682 | /* only supported in the default loop */ |
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683 | #if EV_SIGNAL_ENABLE |
495 | void ev_signal_start (EV_P_ ev_signal *w); |
684 | void ev_signal_start (EV_P_ ev_signal *w); |
496 | void ev_signal_stop (EV_P_ ev_signal *w); |
685 | void ev_signal_stop (EV_P_ ev_signal *w); |
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686 | #endif |
497 | |
687 | |
498 | /* only supported in the default loop */ |
688 | /* only supported in the default loop */ |
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689 | # if EV_CHILD_ENABLE |
499 | void ev_child_start (EV_P_ ev_child *w); |
690 | void ev_child_start (EV_P_ ev_child *w); |
500 | void ev_child_stop (EV_P_ ev_child *w); |
691 | void ev_child_stop (EV_P_ ev_child *w); |
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692 | # endif |
501 | |
693 | |
502 | # if EV_STAT_ENABLE |
694 | # if EV_STAT_ENABLE |
503 | void ev_stat_start (EV_P_ ev_stat *w); |
695 | void ev_stat_start (EV_P_ ev_stat *w); |
504 | void ev_stat_stop (EV_P_ ev_stat *w); |
696 | void ev_stat_stop (EV_P_ ev_stat *w); |
505 | void ev_stat_stat (EV_P_ ev_stat *w); |
697 | void ev_stat_stat (EV_P_ ev_stat *w); |
… | |
… | |
508 | # if EV_IDLE_ENABLE |
700 | # if EV_IDLE_ENABLE |
509 | void ev_idle_start (EV_P_ ev_idle *w); |
701 | void ev_idle_start (EV_P_ ev_idle *w); |
510 | void ev_idle_stop (EV_P_ ev_idle *w); |
702 | void ev_idle_stop (EV_P_ ev_idle *w); |
511 | # endif |
703 | # endif |
512 | |
704 | |
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705 | #if EV_PREPARE_ENABLE |
513 | void ev_prepare_start (EV_P_ ev_prepare *w); |
706 | void ev_prepare_start (EV_P_ ev_prepare *w); |
514 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
707 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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708 | #endif |
515 | |
709 | |
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710 | #if EV_CHECK_ENABLE |
516 | void ev_check_start (EV_P_ ev_check *w); |
711 | void ev_check_start (EV_P_ ev_check *w); |
517 | void ev_check_stop (EV_P_ ev_check *w); |
712 | void ev_check_stop (EV_P_ ev_check *w); |
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713 | #endif |
518 | |
714 | |
519 | # if EV_FORK_ENABLE |
715 | # if EV_FORK_ENABLE |
520 | void ev_fork_start (EV_P_ ev_fork *w); |
716 | void ev_fork_start (EV_P_ ev_fork *w); |
521 | void ev_fork_stop (EV_P_ ev_fork *w); |
717 | void ev_fork_stop (EV_P_ ev_fork *w); |
522 | # endif |
718 | # endif |
… | |
… | |
526 | void ev_embed_start (EV_P_ ev_embed *w); |
722 | void ev_embed_start (EV_P_ ev_embed *w); |
527 | void ev_embed_stop (EV_P_ ev_embed *w); |
723 | void ev_embed_stop (EV_P_ ev_embed *w); |
528 | void ev_embed_sweep (EV_P_ ev_embed *w); |
724 | void ev_embed_sweep (EV_P_ ev_embed *w); |
529 | # endif |
725 | # endif |
530 | |
726 | |
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727 | # if EV_ASYNC_ENABLE |
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728 | void ev_async_start (EV_P_ ev_async *w); |
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729 | void ev_async_stop (EV_P_ ev_async *w); |
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730 | void ev_async_send (EV_P_ ev_async *w); |
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731 | # endif |
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732 | |
531 | #endif |
733 | #endif |
532 | |
734 | |
533 | #ifdef __cplusplus |
735 | #ifdef __cplusplus |
534 | } |
736 | } |
535 | #endif |
737 | #endif |