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 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 | |
… | |
… | |
46 | |
56 | |
47 | #ifndef EV_MULTIPLICITY |
57 | #ifndef EV_MULTIPLICITY |
48 | # define EV_MULTIPLICITY 1 |
58 | # define EV_MULTIPLICITY 1 |
49 | #endif |
59 | #endif |
50 | |
60 | |
51 | #ifndef EV_PERIODICS |
61 | #ifndef EV_PERIODIC_ENABLE |
52 | # define EV_PERIODICS 1 |
62 | # define EV_PERIODIC_ENABLE 1 |
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63 | #endif |
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64 | |
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65 | #ifndef EV_STAT_ENABLE |
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66 | # define EV_STAT_ENABLE 1 |
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67 | #endif |
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68 | |
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69 | #ifndef EV_IDLE_ENABLE |
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70 | # define EV_IDLE_ENABLE 1 |
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71 | #endif |
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72 | |
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73 | #ifndef EV_FORK_ENABLE |
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74 | # define EV_FORK_ENABLE 1 |
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75 | #endif |
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76 | |
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77 | #ifndef EV_EMBED_ENABLE |
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78 | # define EV_EMBED_ENABLE 1 |
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79 | #endif |
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80 | |
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81 | #ifndef EV_ASYNC_ENABLE |
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82 | # define EV_ASYNC_ENABLE 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_ATOMIC_T |
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86 | # include <signal.h> |
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87 | # define EV_ATOMIC_T sig_atomic_t volatile |
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88 | #endif |
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89 | |
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90 | /*****************************************************************************/ |
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91 | |
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92 | #if EV_STAT_ENABLE |
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93 | # include <sys/stat.h> |
53 | #endif |
94 | #endif |
54 | |
95 | |
55 | /* support multiple event loops? */ |
96 | /* support multiple event loops? */ |
56 | #if EV_MULTIPLICITY |
97 | #if EV_MULTIPLICITY |
57 | struct ev_loop; |
98 | struct ev_loop; |
58 | # define EV_P struct ev_loop *loop |
99 | # define EV_P struct ev_loop *loop |
59 | # define EV_P_ EV_P, |
100 | # define EV_P_ EV_P, |
60 | # define EV_A loop |
101 | # define EV_A loop |
61 | # define EV_A_ EV_A, |
102 | # define EV_A_ EV_A, |
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103 | # define EV_DEFAULT_UC ev_default_loop_uc () |
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104 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
62 | # define EV_DEFAULT_A ev_default_loop (0) |
105 | # define EV_DEFAULT ev_default_loop (0) |
63 | # define EV_DEFAULT_A_ EV_DEFAULT_A, |
106 | # define EV_DEFAULT_ EV_DEFAULT, |
64 | #else |
107 | #else |
65 | # define EV_P void |
108 | # define EV_P void |
66 | # define EV_P_ |
109 | # define EV_P_ |
67 | # define EV_A |
110 | # define EV_A |
68 | # define EV_A_ |
111 | # define EV_A_ |
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112 | # define EV_DEFAULT |
69 | # define EV_DEFAULT_A |
113 | # define EV_DEFAULT_ |
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114 | # define EV_DEFAULT_UC |
70 | # define EV_DEFAULT_A_ |
115 | # define EV_DEFAULT_UC_ |
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116 | # undef EV_EMBED_ENABLE |
71 | #endif |
117 | #endif |
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118 | |
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119 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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120 | # define EV_INLINE static inline |
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121 | #else |
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122 | # define EV_INLINE static |
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123 | #endif |
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124 | |
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125 | /*****************************************************************************/ |
72 | |
126 | |
73 | /* eventmask, revents, events... */ |
127 | /* eventmask, revents, events... */ |
74 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
128 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
75 | #define EV_NONE 0x00L |
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76 | #define EV_READ 0x01L /* io only */ |
129 | #define EV_NONE 0x00 /* no events */ |
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130 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
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131 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
77 | #define EV_WRITE 0x02L /* io only */ |
132 | #define EV_IOFDSET 0x80 /* internal use only */ |
78 | #define EV_TIMEOUT 0x000100L /* timer only */ |
133 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
79 | #define EV_PERIODIC 0x000200L /* periodic timer only */ |
134 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
80 | #define EV_SIGNAL 0x000400L /* signal only */ |
135 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
81 | #define EV_IDLE 0x000800L /* idle only */ |
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82 | #define EV_CHECK 0x001000L /* check only */ |
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83 | #define EV_PREPARE 0x002000L /* prepare only */ |
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84 | #define EV_CHILD 0x004000L /* child/pid only */ |
136 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
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137 | #define EV_STAT 0x00001000 /* stat data changed */ |
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138 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
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139 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
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140 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
85 | #define EV_EMBED 0x008000L /* embedded event loop */ |
141 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
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142 | #define EV_FORK 0x00020000 /* event loop resumed in child */ |
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143 | #define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
86 | #define EV_ERROR 0x800000L /* sent when an error occurs */ |
144 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
87 | |
145 | |
88 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
146 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
89 | #ifndef EV_COMMON |
147 | #ifndef EV_COMMON |
90 | # define EV_COMMON void *data; |
148 | # define EV_COMMON void *data; |
91 | #endif |
149 | #endif |
92 | #ifndef EV_PROTOTYPES |
150 | #ifndef EV_PROTOTYPES |
93 | # define EV_PROTOTYPES 1 |
151 | # define EV_PROTOTYPES 1 |
94 | #endif |
152 | #endif |
95 | |
153 | |
96 | #define EV_VERSION_MAJOR 1 |
154 | #define EV_VERSION_MAJOR 3 |
97 | #define EV_VERSION_MINOR 1 |
155 | #define EV_VERSION_MINOR 0 |
98 | |
156 | |
99 | #ifndef EV_CB_DECLARE |
157 | #ifndef EV_CB_DECLARE |
100 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
158 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
101 | #endif |
159 | #endif |
102 | #ifndef EV_CB_INVOKE |
160 | #ifndef EV_CB_INVOKE |
… | |
… | |
142 | typedef struct ev_watcher_time |
200 | typedef struct ev_watcher_time |
143 | { |
201 | { |
144 | EV_WATCHER_TIME (ev_watcher_time) |
202 | EV_WATCHER_TIME (ev_watcher_time) |
145 | } ev_watcher_time; |
203 | } ev_watcher_time; |
146 | |
204 | |
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205 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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206 | /* revent EV_READ, EV_WRITE */ |
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207 | typedef struct ev_io |
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208 | { |
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209 | EV_WATCHER_LIST (ev_io) |
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210 | |
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211 | int fd; /* ro */ |
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212 | int events; /* ro */ |
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213 | } ev_io; |
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214 | |
147 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
215 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
148 | /* revent EV_TIMEOUT */ |
216 | /* revent EV_TIMEOUT */ |
149 | typedef struct ev_timer |
217 | typedef struct ev_timer |
150 | { |
218 | { |
151 | EV_WATCHER_TIME (ev_timer) |
219 | EV_WATCHER_TIME (ev_timer) |
… | |
… | |
157 | /* revent EV_PERIODIC */ |
225 | /* revent EV_PERIODIC */ |
158 | typedef struct ev_periodic |
226 | typedef struct ev_periodic |
159 | { |
227 | { |
160 | EV_WATCHER_TIME (ev_periodic) |
228 | EV_WATCHER_TIME (ev_periodic) |
161 | |
229 | |
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230 | ev_tstamp offset; /* rw */ |
162 | ev_tstamp interval; /* rw */ |
231 | ev_tstamp interval; /* rw */ |
163 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
232 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
164 | } ev_periodic; |
233 | } ev_periodic; |
165 | |
234 | |
166 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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167 | /* revent EV_READ, EV_WRITE */ |
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168 | typedef struct ev_io |
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169 | { |
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170 | EV_WATCHER_LIST (ev_io) |
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171 | |
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172 | int fd; /* ro */ |
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173 | int events; /* ro */ |
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174 | } ev_io; |
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175 | |
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176 | /* invoked when the given signal has been received */ |
235 | /* invoked when the given signal has been received */ |
177 | /* revent EV_SIGNAL */ |
236 | /* revent EV_SIGNAL */ |
178 | typedef struct ev_signal |
237 | typedef struct ev_signal |
179 | { |
238 | { |
180 | EV_WATCHER_LIST (ev_signal) |
239 | EV_WATCHER_LIST (ev_signal) |
181 | |
240 | |
182 | int signum; /* ro */ |
241 | int signum; /* ro */ |
183 | } ev_signal; |
242 | } ev_signal; |
184 | |
243 | |
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244 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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245 | /* revent EV_CHILD */ |
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246 | /* does not support priorities */ |
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247 | typedef struct ev_child |
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248 | { |
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249 | EV_WATCHER_LIST (ev_child) |
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250 | |
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251 | int flags; /* private */ |
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252 | int pid; /* ro */ |
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253 | int rpid; /* rw, holds the received pid */ |
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254 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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255 | } ev_child; |
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256 | |
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257 | #if EV_STAT_ENABLE |
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258 | /* st_nlink = 0 means missing file or other error */ |
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259 | # ifdef _WIN32 |
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260 | typedef struct _stati64 ev_statdata; |
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261 | # else |
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262 | typedef struct stat ev_statdata; |
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263 | # endif |
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264 | |
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265 | /* invoked each time the stat data changes for a given path */ |
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266 | /* revent EV_STAT */ |
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267 | typedef struct ev_stat |
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268 | { |
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269 | EV_WATCHER_LIST (ev_stat) |
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270 | |
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271 | ev_timer timer; /* private */ |
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272 | ev_tstamp interval; /* ro */ |
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273 | const char *path; /* ro */ |
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274 | ev_statdata prev; /* ro */ |
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275 | ev_statdata attr; /* ro */ |
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276 | |
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277 | int wd; /* wd for inotify, fd for kqueue */ |
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278 | } ev_stat; |
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279 | #endif |
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280 | |
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281 | #if EV_IDLE_ENABLE |
185 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
282 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
186 | /* revent EV_IDLE */ |
283 | /* revent EV_IDLE */ |
187 | typedef struct ev_idle |
284 | typedef struct ev_idle |
188 | { |
285 | { |
189 | EV_WATCHER (ev_idle) |
286 | EV_WATCHER (ev_idle) |
190 | } ev_idle; |
287 | } ev_idle; |
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288 | #endif |
191 | |
289 | |
192 | /* invoked for each run of the mainloop, just before the blocking call */ |
290 | /* invoked for each run of the mainloop, just before the blocking call */ |
193 | /* you can still change events in any way you like */ |
291 | /* you can still change events in any way you like */ |
194 | /* revent EV_PREPARE */ |
292 | /* revent EV_PREPARE */ |
195 | typedef struct ev_prepare |
293 | typedef struct ev_prepare |
… | |
… | |
202 | typedef struct ev_check |
300 | typedef struct ev_check |
203 | { |
301 | { |
204 | EV_WATCHER (ev_check) |
302 | EV_WATCHER (ev_check) |
205 | } ev_check; |
303 | } ev_check; |
206 | |
304 | |
207 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
305 | #if EV_FORK_ENABLE |
208 | /* revent EV_CHILD */ |
306 | /* the callback gets invoked before check in the child process when a fork was detected */ |
209 | /* does not support priorities */ |
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210 | typedef struct ev_child |
307 | typedef struct ev_fork |
211 | { |
308 | { |
212 | EV_WATCHER_LIST (ev_child) |
309 | EV_WATCHER (ev_fork) |
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310 | } ev_fork; |
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311 | #endif |
213 | |
312 | |
214 | int pid; /* ro */ |
313 | #if EV_EMBED_ENABLE |
215 | int rpid; /* rw, holds the received pid */ |
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216 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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217 | } ev_child; |
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218 | |
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219 | #if EV_MULTIPLICITY |
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220 | /* used to embed an event loop inside another */ |
314 | /* used to embed an event loop inside another */ |
221 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
315 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
222 | typedef struct ev_embed |
316 | typedef struct ev_embed |
223 | { |
317 | { |
224 | EV_WATCHER (ev_embed) |
318 | EV_WATCHER (ev_embed) |
225 | |
319 | |
226 | ev_io io; /* private */ |
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227 | struct ev_loop *loop; /* ro */ |
320 | struct ev_loop *other; /* ro */ |
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321 | ev_io io; /* private */ |
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322 | ev_prepare prepare; /* private */ |
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323 | ev_check check; /* unused */ |
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324 | ev_timer timer; /* unused */ |
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325 | ev_periodic periodic; /* unused */ |
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326 | ev_idle idle; /* unused */ |
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327 | ev_fork fork; /* unused */ |
228 | } ev_embed; |
328 | } ev_embed; |
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329 | #endif |
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330 | |
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331 | #if EV_ASYNC_ENABLE |
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332 | /* invoked when somebody calls ev_async_send on the watcher */ |
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333 | /* revent EV_ASYNC */ |
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334 | typedef struct ev_async |
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335 | { |
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336 | EV_WATCHER (ev_async) |
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337 | |
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338 | EV_ATOMIC_T sent; /* private */ |
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339 | } ev_async; |
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340 | |
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341 | # define ev_async_pending(w) ((w)->sent + 0) |
229 | #endif |
342 | #endif |
230 | |
343 | |
231 | /* the presence of this union forces similar struct layout */ |
344 | /* the presence of this union forces similar struct layout */ |
232 | union ev_any_watcher |
345 | union ev_any_watcher |
233 | { |
346 | { |
… | |
… | |
235 | struct ev_watcher_list wl; |
348 | struct ev_watcher_list wl; |
236 | |
349 | |
237 | struct ev_io io; |
350 | struct ev_io io; |
238 | struct ev_timer timer; |
351 | struct ev_timer timer; |
239 | struct ev_periodic periodic; |
352 | struct ev_periodic periodic; |
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353 | struct ev_signal signal; |
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354 | struct ev_child child; |
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355 | #if EV_STAT_ENABLE |
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356 | struct ev_stat stat; |
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357 | #endif |
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358 | #if EV_IDLE_ENABLE |
240 | struct ev_idle idle; |
359 | struct ev_idle idle; |
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360 | #endif |
241 | struct ev_prepare prepare; |
361 | struct ev_prepare prepare; |
242 | struct ev_check check; |
362 | struct ev_check check; |
243 | struct ev_signal signal; |
363 | #if EV_FORK_ENABLE |
244 | struct ev_child child; |
364 | struct ev_fork fork; |
245 | #if EV_MULTIPLICITY |
365 | #endif |
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366 | #if EV_EMBED_ENABLE |
246 | struct ev_embed embed; |
367 | struct ev_embed embed; |
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368 | #endif |
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369 | #if EV_ASYNC_ENABLE |
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370 | struct ev_async async; |
247 | #endif |
371 | #endif |
248 | }; |
372 | }; |
249 | |
373 | |
250 | /* bits for ev_default_loop and ev_loop_new */ |
374 | /* bits for ev_default_loop and ev_loop_new */ |
251 | /* the default */ |
375 | /* the default */ |
252 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
376 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
253 | /* flag bits */ |
377 | /* flag bits */ |
254 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
378 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
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379 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
255 | /* method bits to be ored together */ |
380 | /* method bits to be ored together */ |
256 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
381 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
257 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
382 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
258 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
383 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
259 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
384 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
260 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
385 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
261 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
386 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
262 | |
387 | |
263 | #if EV_PROTOTYPES |
388 | #if EV_PROTOTYPES |
264 | int ev_version_major (void); |
389 | int ev_version_major (void); |
265 | int ev_version_minor (void); |
390 | int ev_version_minor (void); |
266 | |
391 | |
267 | unsigned int ev_supported_backends (void); |
392 | unsigned int ev_supported_backends (void); |
268 | unsigned int ev_recommended_backends (void); |
393 | unsigned int ev_recommended_backends (void); |
269 | unsigned int ev_embeddable_backends (void); |
394 | unsigned int ev_embeddable_backends (void); |
270 | |
395 | |
271 | ev_tstamp ev_time (void); |
396 | ev_tstamp ev_time (void); |
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397 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
272 | |
398 | |
273 | /* Sets the allocation function to use, works like realloc. |
399 | /* Sets the allocation function to use, works like realloc. |
274 | * It is used to allocate and free memory. |
400 | * It is used to allocate and free memory. |
275 | * If it returns zero when memory needs to be allocated, the library might abort |
401 | * If it returns zero when memory needs to be allocated, the library might abort |
276 | * or take some potentially destructive action. |
402 | * or take some potentially destructive action. |
… | |
… | |
283 | * (such as failed select, poll, epoll_wait) |
409 | * (such as failed select, poll, epoll_wait) |
284 | */ |
410 | */ |
285 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
411 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
286 | |
412 | |
287 | # if EV_MULTIPLICITY |
413 | # if EV_MULTIPLICITY |
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414 | EV_INLINE struct ev_loop * |
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415 | ev_default_loop_uc (void) |
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416 | { |
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417 | extern struct ev_loop *ev_default_loop_ptr; |
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418 | |
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419 | return ev_default_loop_ptr; |
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420 | } |
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421 | |
288 | /* the default loop is the only one that handles signals and child watchers */ |
422 | /* the default loop is the only one that handles signals and child watchers */ |
289 | /* you can call this as often as you like */ |
423 | /* you can call this as often as you like */ |
290 | static struct ev_loop * |
424 | EV_INLINE struct ev_loop * |
291 | ev_default_loop (unsigned int flags) |
425 | ev_default_loop (unsigned int flags) |
292 | { |
426 | { |
293 | extern struct ev_loop *ev_default_loop_ptr; |
427 | struct ev_loop *loop = ev_default_loop_uc (); |
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428 | |
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429 | if (!loop) |
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430 | { |
294 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
431 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
295 | |
432 | |
296 | if (!ev_default_loop_ptr) |
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297 | ev_default_loop_init (flags); |
433 | loop = ev_default_loop_init (flags); |
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434 | } |
298 | |
435 | |
299 | return ev_default_loop_ptr; |
436 | return loop; |
300 | } |
437 | } |
301 | |
438 | |
302 | /* create and destroy alternative loops that don't handle signals */ |
439 | /* create and destroy alternative loops that don't handle signals */ |
303 | struct ev_loop *ev_loop_new (unsigned int flags); |
440 | struct ev_loop *ev_loop_new (unsigned int flags); |
304 | void ev_loop_destroy (EV_P); |
441 | void ev_loop_destroy (EV_P); |
… | |
… | |
308 | |
445 | |
309 | # else |
446 | # else |
310 | |
447 | |
311 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
448 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
312 | |
449 | |
313 | static ev_tstamp |
450 | EV_INLINE ev_tstamp |
314 | ev_now (void) |
451 | ev_now (void) |
315 | { |
452 | { |
316 | extern ev_tstamp ev_rt_now; |
453 | extern ev_tstamp ev_rt_now; |
317 | |
454 | |
318 | return ev_rt_now; |
455 | return ev_rt_now; |
319 | } |
456 | } |
320 | # endif |
457 | # endif |
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458 | |
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459 | EV_INLINE int |
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460 | ev_is_default_loop (EV_P) |
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461 | { |
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462 | #if EV_MULTIPLICITY |
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463 | extern struct ev_loop *ev_default_loop_ptr; |
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464 | |
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465 | return !!(EV_A == ev_default_loop_ptr); |
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466 | #else |
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467 | return 1; |
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468 | #endif |
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469 | } |
321 | |
470 | |
322 | void ev_default_destroy (void); /* destroy the default loop */ |
471 | void ev_default_destroy (void); /* destroy the default loop */ |
323 | /* this needs to be called after fork, to duplicate the default loop */ |
472 | /* this needs to be called after fork, to duplicate the default loop */ |
324 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
473 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
325 | /* you can call it in either the parent or the child */ |
474 | /* you can call it in either the parent or the child */ |
326 | /* you can actually call it at any time, anywhere :) */ |
475 | /* you can actually call it at any time, anywhere :) */ |
327 | void ev_default_fork (void); |
476 | void ev_default_fork (void); |
328 | |
477 | |
329 | unsigned int ev_backend (EV_P); |
478 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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479 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
330 | #endif |
480 | #endif |
331 | |
481 | |
332 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
482 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
333 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
483 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
334 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
484 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
… | |
… | |
336 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
486 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
337 | |
487 | |
338 | #if EV_PROTOTYPES |
488 | #if EV_PROTOTYPES |
339 | void ev_loop (EV_P_ int flags); |
489 | void ev_loop (EV_P_ int flags); |
340 | 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 */ |
490 | 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 */ |
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491 | |
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492 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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493 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
341 | |
494 | |
342 | /* |
495 | /* |
343 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
496 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
344 | * keeps one reference. if you have a long-runing watcher you never unregister that |
497 | * keeps one reference. if you have a long-runing watcher you never unregister that |
345 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
498 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
… | |
… | |
352 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
505 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
353 | #endif |
506 | #endif |
354 | |
507 | |
355 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
508 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
356 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
509 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
357 | #define ev_init(ev,cb_) do { \ |
510 | #define ev_init(ev,cb_) do { \ |
358 | ((ev_watcher *)(void *)(ev))->active = \ |
511 | ((ev_watcher *)(void *)(ev))->active = \ |
359 | ((ev_watcher *)(void *)(ev))->pending = \ |
512 | ((ev_watcher *)(void *)(ev))->pending = \ |
360 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
513 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
361 | ev_set_cb ((ev), cb_); \ |
514 | ev_set_cb ((ev), cb_); \ |
362 | } while (0) |
515 | } while (0) |
363 | |
516 | |
364 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
517 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
365 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
518 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
366 | #define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
519 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
367 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
520 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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521 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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522 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
368 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
523 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
369 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
524 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
370 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
525 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
371 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
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372 | #define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) |
526 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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527 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
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528 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
373 | |
529 | |
374 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
530 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
375 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
531 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
376 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
532 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
377 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
533 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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534 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
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535 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
378 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
536 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
379 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
537 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
380 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
538 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
381 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
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382 | #define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) |
539 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
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540 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
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541 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
383 | |
542 | |
384 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
543 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
385 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
544 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
386 | |
545 | |
387 | #define ev_priority(ev) ((ev_watcher *)(void *)(ev))->priority /* rw */ |
546 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
388 | #define ev_cb(ev) (ev)->cb /* rw */ |
547 | #define ev_cb(ev) (ev)->cb /* rw */ |
389 | #define ev_set_priority(ev,pri) ev_priority (ev) = (pri) |
548 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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549 | |
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550 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
390 | |
551 | |
391 | #ifndef ev_set_cb |
552 | #ifndef ev_set_cb |
392 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
553 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
393 | #endif |
554 | #endif |
394 | |
555 | |
… | |
… | |
399 | /* feeds an event into a watcher as if the event actually occured */ |
560 | /* feeds an event into a watcher as if the event actually occured */ |
400 | /* accepts any ev_watcher type */ |
561 | /* accepts any ev_watcher type */ |
401 | void ev_feed_event (EV_P_ void *w, int revents); |
562 | void ev_feed_event (EV_P_ void *w, int revents); |
402 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
563 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
403 | void ev_feed_signal_event (EV_P_ int signum); |
564 | void ev_feed_signal_event (EV_P_ int signum); |
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565 | void ev_invoke (EV_P_ void *w, int revents); |
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566 | int ev_clear_pending (EV_P_ void *w); |
404 | |
567 | |
405 | void ev_io_start (EV_P_ ev_io *w); |
568 | void ev_io_start (EV_P_ ev_io *w); |
406 | void ev_io_stop (EV_P_ ev_io *w); |
569 | void ev_io_stop (EV_P_ ev_io *w); |
407 | |
570 | |
408 | void ev_timer_start (EV_P_ ev_timer *w); |
571 | void ev_timer_start (EV_P_ ev_timer *w); |
409 | void ev_timer_stop (EV_P_ ev_timer *w); |
572 | void ev_timer_stop (EV_P_ ev_timer *w); |
410 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
573 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
411 | void ev_timer_again (EV_P_ ev_timer *w); |
574 | void ev_timer_again (EV_P_ ev_timer *w); |
412 | |
575 | |
413 | #if EV_PERIODICS |
576 | #if EV_PERIODIC_ENABLE |
414 | void ev_periodic_start (EV_P_ ev_periodic *w); |
577 | void ev_periodic_start (EV_P_ ev_periodic *w); |
415 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
578 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
416 | void ev_periodic_again (EV_P_ ev_periodic *w); |
579 | void ev_periodic_again (EV_P_ ev_periodic *w); |
417 | #endif |
580 | #endif |
418 | |
581 | |
419 | void ev_idle_start (EV_P_ ev_idle *w); |
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420 | void ev_idle_stop (EV_P_ ev_idle *w); |
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421 | |
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422 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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423 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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424 | |
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425 | void ev_check_start (EV_P_ ev_check *w); |
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426 | void ev_check_stop (EV_P_ ev_check *w); |
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427 | |
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428 | /* only supported in the default loop */ |
582 | /* only supported in the default loop */ |
429 | void ev_signal_start (EV_P_ ev_signal *w); |
583 | void ev_signal_start (EV_P_ ev_signal *w); |
430 | void ev_signal_stop (EV_P_ ev_signal *w); |
584 | void ev_signal_stop (EV_P_ ev_signal *w); |
431 | |
585 | |
432 | /* only supported in the default loop */ |
586 | /* only supported in the default loop */ |
433 | void ev_child_start (EV_P_ ev_child *w); |
587 | void ev_child_start (EV_P_ ev_child *w); |
434 | void ev_child_stop (EV_P_ ev_child *w); |
588 | void ev_child_stop (EV_P_ ev_child *w); |
435 | |
589 | |
436 | # if EV_MULTIPLICITY |
590 | # if EV_STAT_ENABLE |
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591 | void ev_stat_start (EV_P_ ev_stat *w); |
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592 | void ev_stat_stop (EV_P_ ev_stat *w); |
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593 | void ev_stat_stat (EV_P_ ev_stat *w); |
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594 | # endif |
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595 | |
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596 | # if EV_IDLE_ENABLE |
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597 | void ev_idle_start (EV_P_ ev_idle *w); |
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598 | void ev_idle_stop (EV_P_ ev_idle *w); |
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599 | # endif |
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600 | |
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601 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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602 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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603 | |
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604 | void ev_check_start (EV_P_ ev_check *w); |
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605 | void ev_check_stop (EV_P_ ev_check *w); |
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606 | |
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607 | # if EV_FORK_ENABLE |
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608 | void ev_fork_start (EV_P_ ev_fork *w); |
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609 | void ev_fork_stop (EV_P_ ev_fork *w); |
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610 | # endif |
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611 | |
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612 | # if EV_EMBED_ENABLE |
437 | /* only supported when loop to be embedded is in fact embeddable */ |
613 | /* only supported when loop to be embedded is in fact embeddable */ |
438 | void ev_embed_start (EV_P_ ev_embed *w); |
614 | void ev_embed_start (EV_P_ ev_embed *w); |
439 | void ev_embed_stop (EV_P_ ev_embed *w); |
615 | void ev_embed_stop (EV_P_ ev_embed *w); |
440 | void ev_embed_loop (EV_P_ ev_embed *w); |
616 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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617 | # endif |
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618 | |
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619 | # if EV_ASYNC_ENABLE |
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620 | void ev_async_start (EV_P_ ev_async *w); |
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621 | void ev_async_stop (EV_P_ ev_async *w); |
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622 | void ev_async_send (EV_P_ ev_async *w); |
441 | # endif |
623 | # endif |
442 | |
624 | |
443 | #endif |
625 | #endif |
444 | |
626 | |
445 | #ifdef __cplusplus |
627 | #ifdef __cplusplus |