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 | |
… | |
… | |
66 | |
76 | |
67 | #ifndef EV_EMBED_ENABLE |
77 | #ifndef EV_EMBED_ENABLE |
68 | # define EV_EMBED_ENABLE 1 |
78 | # define EV_EMBED_ENABLE 1 |
69 | #endif |
79 | #endif |
70 | |
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 | |
71 | /*****************************************************************************/ |
94 | /*****************************************************************************/ |
72 | |
95 | |
73 | #if EV_STAT_ENABLE |
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 |
74 | # include <sys/stat.h> |
101 | # include <sys/stat.h> |
75 | #endif |
102 | #endif |
76 | |
103 | |
77 | /* support multiple event loops? */ |
104 | /* support multiple event loops? */ |
78 | #if EV_MULTIPLICITY |
105 | #if EV_MULTIPLICITY |
79 | struct ev_loop; |
106 | struct ev_loop; |
80 | # define EV_P struct ev_loop *loop |
107 | # define EV_P struct ev_loop *loop |
81 | # define EV_P_ EV_P, |
108 | # define EV_P_ EV_P, |
82 | # define EV_A loop |
109 | # define EV_A loop |
83 | # define EV_A_ EV_A, |
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, |
84 | # define EV_DEFAULT ev_default_loop (0) |
113 | # define EV_DEFAULT ev_default_loop (0) |
85 | # define EV_DEFAULT_ EV_DEFAULT, |
114 | # define EV_DEFAULT_ EV_DEFAULT, |
86 | #else |
115 | #else |
87 | # define EV_P void |
116 | # define EV_P void |
88 | # define EV_P_ |
117 | # define EV_P_ |
89 | # define EV_A |
118 | # define EV_A |
90 | # define EV_A_ |
119 | # define EV_A_ |
91 | # define EV_DEFAULT |
120 | # define EV_DEFAULT |
92 | # define EV_DEFAULT_ |
121 | # define EV_DEFAULT_ |
93 | |
122 | # define EV_DEFAULT_UC |
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123 | # define EV_DEFAULT_UC_ |
94 | # undef EV_EMBED_ENABLE |
124 | # undef EV_EMBED_ENABLE |
95 | #endif |
125 | #endif |
96 | |
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 | |
97 | /* eventmask, revents, events... */ |
135 | /* eventmask, revents, events... */ |
98 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
136 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
99 | #define EV_NONE 0x00L /* no events */ |
137 | #define EV_NONE 0x00 /* no events */ |
100 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
138 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
101 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
139 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
102 | #define EV_IOFDSET 0x80L /* internal use only */ |
140 | #define EV__IOFDSET 0x80 /* internal use only */ |
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141 | #define EV_IO EV_READ /* alias for type-detection */ |
103 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
142 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
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143 | #define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
104 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
144 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
105 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
145 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
106 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
146 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
107 | #define EV_STAT 0x00001000L /* stat data changed */ |
147 | #define EV_STAT 0x00001000 /* stat data changed */ |
108 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
148 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
109 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
149 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
110 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
150 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
111 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
151 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
112 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
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 */ |
113 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
155 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
114 | |
156 | |
115 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
157 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
116 | #ifndef EV_COMMON |
158 | #ifndef EV_COMMON |
117 | # define EV_COMMON void *data; |
159 | # define EV_COMMON void *data; |
118 | #endif |
160 | #endif |
119 | #ifndef EV_PROTOTYPES |
161 | #ifndef EV_PROTOTYPES |
120 | # define EV_PROTOTYPES 1 |
162 | # define EV_PROTOTYPES 1 |
121 | #endif |
163 | #endif |
122 | |
164 | |
123 | #define EV_VERSION_MAJOR 2 |
165 | #define EV_VERSION_MAJOR 3 |
124 | #define EV_VERSION_MINOR 0 |
166 | #define EV_VERSION_MINOR 9 |
125 | |
167 | |
126 | #ifndef EV_CB_DECLARE |
168 | #ifndef EV_CB_DECLARE |
127 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
169 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
128 | #endif |
170 | #endif |
129 | #ifndef EV_CB_INVOKE |
171 | #ifndef EV_CB_INVOKE |
130 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
172 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
131 | #endif |
173 | #endif |
132 | |
174 | |
133 | /* |
175 | /* |
134 | * struct member types: |
176 | * struct member types: |
135 | * 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. |
136 | * 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. |
137 | * 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. |
138 | */ |
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 |
139 | |
197 | |
140 | /* shared by all watchers */ |
198 | /* shared by all watchers */ |
141 | #define EV_WATCHER(type) \ |
199 | #define EV_WATCHER(type) \ |
142 | int active; /* private */ \ |
200 | int active; /* private */ \ |
143 | int pending; /* private */ \ |
201 | int pending; /* private */ \ |
144 | int priority; /* private */ \ |
202 | EV_DECL_PRIORITY /* private */ \ |
145 | EV_COMMON /* rw */ \ |
203 | EV_COMMON /* rw */ \ |
146 | EV_CB_DECLARE (type) /* private */ |
204 | EV_CB_DECLARE (type) /* private */ |
147 | |
205 | |
148 | #define EV_WATCHER_LIST(type) \ |
206 | #define EV_WATCHER_LIST(type) \ |
149 | EV_WATCHER (type) \ |
207 | EV_WATCHER (type) \ |
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215 | /* does not support priorities */ |
273 | /* does not support priorities */ |
216 | typedef struct ev_child |
274 | typedef struct ev_child |
217 | { |
275 | { |
218 | EV_WATCHER_LIST (ev_child) |
276 | EV_WATCHER_LIST (ev_child) |
219 | |
277 | |
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278 | int flags; /* private */ |
220 | int pid; /* ro */ |
279 | int pid; /* ro */ |
221 | int rpid; /* rw, holds the received pid */ |
280 | int rpid; /* rw, holds the received pid */ |
222 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
281 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
223 | } ev_child; |
282 | } ev_child; |
224 | |
283 | |
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283 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
342 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
284 | typedef struct ev_embed |
343 | typedef struct ev_embed |
285 | { |
344 | { |
286 | EV_WATCHER (ev_embed) |
345 | EV_WATCHER (ev_embed) |
287 | |
346 | |
288 | ev_io io; /* private */ |
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289 | struct ev_loop *loop; /* ro */ |
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 */ |
290 | } ev_embed; |
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) |
291 | #endif |
369 | #endif |
292 | |
370 | |
293 | /* the presence of this union forces similar struct layout */ |
371 | /* the presence of this union forces similar struct layout */ |
294 | union ev_any_watcher |
372 | union ev_any_watcher |
295 | { |
373 | { |
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313 | struct ev_fork fork; |
391 | struct ev_fork fork; |
314 | #endif |
392 | #endif |
315 | #if EV_EMBED_ENABLE |
393 | #if EV_EMBED_ENABLE |
316 | struct ev_embed embed; |
394 | struct ev_embed embed; |
317 | #endif |
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 |
318 | }; |
399 | }; |
319 | |
400 | |
320 | /* bits for ev_default_loop and ev_loop_new */ |
401 | /* bits for ev_default_loop and ev_loop_new */ |
321 | /* the default */ |
402 | /* the default */ |
322 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
403 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
323 | /* flag bits */ |
404 | /* flag bits */ |
324 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
405 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
325 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
406 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
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407 | /* debugging/feature disable */ |
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408 | #define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */ |
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409 | #define EVFLAG_NOSIGFD 0 /* compatibility to pre-3.9 */ |
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410 | #define EVFLAG_SIGNALFD 0x00200000U /* attempt to use signalfd */ |
326 | /* method bits to be ored together */ |
411 | /* method bits to be ored together */ |
327 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
412 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
328 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
413 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
329 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
414 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
330 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
415 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
331 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
416 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
332 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
417 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
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418 | #define EVBACKEND_ALL 0x0000003FU |
333 | |
419 | |
334 | #if EV_PROTOTYPES |
420 | #if EV_PROTOTYPES |
335 | int ev_version_major (void); |
421 | int ev_version_major (void); |
336 | int ev_version_minor (void); |
422 | int ev_version_minor (void); |
337 | |
423 | |
338 | unsigned int ev_supported_backends (void); |
424 | unsigned int ev_supported_backends (void); |
339 | unsigned int ev_recommended_backends (void); |
425 | unsigned int ev_recommended_backends (void); |
340 | unsigned int ev_embeddable_backends (void); |
426 | unsigned int ev_embeddable_backends (void); |
341 | |
427 | |
342 | ev_tstamp ev_time (void); |
428 | ev_tstamp ev_time (void); |
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429 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
343 | |
430 | |
344 | /* Sets the allocation function to use, works like realloc. |
431 | /* Sets the allocation function to use, works like realloc. |
345 | * It is used to allocate and free memory. |
432 | * It is used to allocate and free memory. |
346 | * If it returns zero when memory needs to be allocated, the library might abort |
433 | * If it returns zero when memory needs to be allocated, the library might abort |
347 | * or take some potentially destructive action. |
434 | * or take some potentially destructive action. |
… | |
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353 | * retryable syscall error |
440 | * retryable syscall error |
354 | * (such as failed select, poll, epoll_wait) |
441 | * (such as failed select, poll, epoll_wait) |
355 | */ |
442 | */ |
356 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
443 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
357 | |
444 | |
358 | # if EV_MULTIPLICITY |
445 | #if EV_MULTIPLICITY |
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446 | EV_INLINE struct ev_loop * |
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447 | ev_default_loop_uc (void) |
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448 | { |
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449 | extern struct ev_loop *ev_default_loop_ptr; |
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450 | |
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451 | return ev_default_loop_ptr; |
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452 | } |
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453 | |
359 | /* the default loop is the only one that handles signals and child watchers */ |
454 | /* the default loop is the only one that handles signals and child watchers */ |
360 | /* you can call this as often as you like */ |
455 | /* you can call this as often as you like */ |
361 | static struct ev_loop * |
456 | EV_INLINE struct ev_loop * |
362 | ev_default_loop (unsigned int flags) |
457 | ev_default_loop (unsigned int flags) |
363 | { |
458 | { |
364 | extern struct ev_loop *ev_default_loop_ptr; |
459 | struct ev_loop *loop = ev_default_loop_uc (); |
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460 | |
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461 | if (!loop) |
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462 | { |
365 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
463 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
366 | |
464 | |
367 | if (!ev_default_loop_ptr) |
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368 | ev_default_loop_init (flags); |
465 | loop = ev_default_loop_init (flags); |
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466 | } |
369 | |
467 | |
370 | return ev_default_loop_ptr; |
468 | return loop; |
371 | } |
469 | } |
372 | |
470 | |
373 | /* create and destroy alternative loops that don't handle signals */ |
471 | /* create and destroy alternative loops that don't handle signals */ |
374 | struct ev_loop *ev_loop_new (unsigned int flags); |
472 | struct ev_loop *ev_loop_new (unsigned int flags); |
375 | void ev_loop_destroy (EV_P); |
473 | void ev_loop_destroy (EV_P); |
376 | void ev_loop_fork (EV_P); |
474 | void ev_loop_fork (EV_P); |
377 | |
475 | |
378 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
476 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
379 | |
477 | |
380 | # else |
478 | #else |
381 | |
479 | |
382 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
480 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
383 | |
481 | |
384 | static ev_tstamp |
482 | EV_INLINE ev_tstamp |
385 | ev_now (void) |
483 | ev_now (void) |
386 | { |
484 | { |
387 | extern ev_tstamp ev_rt_now; |
485 | extern ev_tstamp ev_rt_now; |
388 | |
486 | |
389 | return ev_rt_now; |
487 | return ev_rt_now; |
390 | } |
488 | } |
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489 | #endif /* multiplicity */ |
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490 | |
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491 | EV_INLINE int |
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492 | ev_is_default_loop (EV_P) |
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493 | { |
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494 | #if EV_MULTIPLICITY |
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495 | extern struct ev_loop *ev_default_loop_ptr; |
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496 | |
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497 | return !!(EV_A == ev_default_loop_ptr); |
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498 | #else |
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499 | return 1; |
391 | # endif |
500 | #endif |
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501 | } |
392 | |
502 | |
393 | void ev_default_destroy (void); /* destroy the default loop */ |
503 | void ev_default_destroy (void); /* destroy the default loop */ |
394 | /* this needs to be called after fork, to duplicate the default loop */ |
504 | /* this needs to be called after fork, to duplicate the default loop */ |
395 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
505 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
396 | /* you can call it in either the parent or the child */ |
506 | /* you can call it in either the parent or the child */ |
397 | /* you can actually call it at any time, anywhere :) */ |
507 | /* you can actually call it at any time, anywhere :) */ |
398 | void ev_default_fork (void); |
508 | void ev_default_fork (void); |
399 | |
509 | |
400 | unsigned int ev_backend (EV_P); |
510 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
401 | unsigned int ev_loop_count (EV_P); |
511 | |
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512 | void ev_now_update (EV_P); /* update event loop time */ |
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513 | |
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514 | #if EV_WALK_ENABLE |
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515 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
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516 | /* callback on every such watcher. The callback might stop the watcher, */ |
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517 | /* but do nothing else with the loop */ |
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518 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
402 | #endif |
519 | #endif |
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520 | |
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521 | #endif /* prototypes */ |
403 | |
522 | |
404 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
523 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
405 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
524 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
406 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
525 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
407 | #define EVUNLOOP_ONE 1 /* unloop once */ |
526 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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411 | void ev_loop (EV_P_ int flags); |
530 | void ev_loop (EV_P_ int flags); |
412 | 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 */ |
531 | 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 */ |
413 | |
532 | |
414 | /* |
533 | /* |
415 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
534 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
416 | * keeps one reference. if you have a long-runing watcher you never unregister that |
535 | * keeps one reference. if you have a long-running watcher you never unregister that |
417 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
536 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
418 | */ |
537 | */ |
419 | void ev_ref (EV_P); |
538 | void ev_ref (EV_P); |
420 | void ev_unref (EV_P); |
539 | void ev_unref (EV_P); |
421 | |
540 | |
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541 | /* |
422 | /* convinience function, wait for a single event, without registering an event watcher */ |
542 | * convenience function, wait for a single event, without registering an event watcher |
423 | /* if timeout is < 0, do wait indefinitely */ |
543 | * if timeout is < 0, do wait indefinitely |
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544 | */ |
424 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
545 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
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546 | |
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547 | # if EV_MINIMAL < 2 |
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548 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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549 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
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550 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
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551 | |
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552 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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553 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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554 | |
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555 | /* advanced stuff for threading etc. support, see docs */ |
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556 | void ev_set_userdata (EV_P_ void *data); |
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557 | void *ev_userdata (EV_P); |
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558 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
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559 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
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560 | |
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561 | unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
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562 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
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563 | |
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564 | /* |
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565 | * stop/start the timer handling. |
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566 | */ |
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567 | void ev_suspend (EV_P); |
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568 | void ev_resume (EV_P); |
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569 | #endif |
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570 | |
425 | #endif |
571 | #endif |
426 | |
572 | |
427 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
573 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
428 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
574 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
429 | #define ev_init(ev,cb_) do { \ |
575 | #define ev_init(ev,cb_) do { \ |
430 | ((ev_watcher *)(void *)(ev))->active = \ |
576 | ((ev_watcher *)(void *)(ev))->active = \ |
431 | ((ev_watcher *)(void *)(ev))->pending = \ |
577 | ((ev_watcher *)(void *)(ev))->pending = 0; \ |
432 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
578 | ev_set_priority ((ev), 0); \ |
433 | ev_set_cb ((ev), cb_); \ |
579 | ev_set_cb ((ev), cb_); \ |
434 | } while (0) |
580 | } while (0) |
435 | |
581 | |
436 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
582 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
437 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
583 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
438 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
584 | #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
439 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
585 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
440 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
586 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
441 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
587 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
442 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
588 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
443 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
589 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
444 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
590 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
445 | #define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) |
591 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
446 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
592 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
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593 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
447 | |
594 | |
448 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
595 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
449 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
596 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
450 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
597 | #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
451 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
598 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
452 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
599 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
453 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_path_set ((ev),(path),(interval)); } while (0) |
600 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
454 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
601 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
455 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
602 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
456 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
603 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
457 | #define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) |
604 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
458 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
605 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
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606 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
459 | |
607 | |
460 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
608 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
461 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
609 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
462 | |
610 | |
463 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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464 | #define ev_cb(ev) (ev)->cb /* rw */ |
611 | #define ev_cb(ev) (ev)->cb /* rw */ |
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612 | |
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613 | #if EV_MINPRI == EV_MAXPRI |
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614 | # define ev_priority(ev) ((ev), EV_MINPRI) |
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615 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
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616 | #else |
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617 | # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
465 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
618 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
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619 | #endif |
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620 | |
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621 | #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
466 | |
622 | |
467 | #ifndef ev_set_cb |
623 | #ifndef ev_set_cb |
468 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
624 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
469 | #endif |
625 | #endif |
470 | |
626 | |
471 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
627 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
472 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
628 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
473 | #if EV_PROTOTYPES |
629 | #if EV_PROTOTYPES |
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485 | |
641 | |
486 | void ev_timer_start (EV_P_ ev_timer *w); |
642 | void ev_timer_start (EV_P_ ev_timer *w); |
487 | void ev_timer_stop (EV_P_ ev_timer *w); |
643 | void ev_timer_stop (EV_P_ ev_timer *w); |
488 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
644 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
489 | void ev_timer_again (EV_P_ ev_timer *w); |
645 | void ev_timer_again (EV_P_ ev_timer *w); |
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646 | /* return remaining time */ |
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647 | ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); |
490 | |
648 | |
491 | #if EV_PERIODIC_ENABLE |
649 | #if EV_PERIODIC_ENABLE |
492 | void ev_periodic_start (EV_P_ ev_periodic *w); |
650 | void ev_periodic_start (EV_P_ ev_periodic *w); |
493 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
651 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
494 | void ev_periodic_again (EV_P_ ev_periodic *w); |
652 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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529 | void ev_embed_start (EV_P_ ev_embed *w); |
687 | void ev_embed_start (EV_P_ ev_embed *w); |
530 | void ev_embed_stop (EV_P_ ev_embed *w); |
688 | void ev_embed_stop (EV_P_ ev_embed *w); |
531 | void ev_embed_sweep (EV_P_ ev_embed *w); |
689 | void ev_embed_sweep (EV_P_ ev_embed *w); |
532 | # endif |
690 | # endif |
533 | |
691 | |
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692 | # if EV_ASYNC_ENABLE |
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693 | void ev_async_start (EV_P_ ev_async *w); |
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694 | void ev_async_stop (EV_P_ ev_async *w); |
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695 | void ev_async_send (EV_P_ ev_async *w); |
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696 | # endif |
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697 | |
534 | #endif |
698 | #endif |
535 | |
699 | |
536 | #ifdef __cplusplus |
700 | #ifdef __cplusplus |
537 | } |
701 | } |
538 | #endif |
702 | #endif |