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 -1 /* guaranteed to be invalid */ |
128 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
75 | #define EV_NONE 0x00 |
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76 | #define EV_READ 0x01 /* 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 0x02 /* io only */ |
132 | #define EV_IOFDSET 0x80 /* internal use only */ |
78 | #define EV_TIMEOUT 0x000100 /* timer only */ |
133 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
79 | #define EV_PERIODIC 0x000200 /* periodic timer only */ |
134 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
80 | #define EV_SIGNAL 0x000400 /* signal only */ |
135 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
81 | #define EV_IDLE 0x000800 /* idle only */ |
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82 | #define EV_CHECK 0x001000 /* check only */ |
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83 | #define EV_PREPARE 0x002000 /* prepare only */ |
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84 | #define EV_CHILD 0x004000 /* 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 */ |
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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 */ |
85 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
144 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
86 | |
145 | |
87 | /* 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 */ |
88 | #ifndef EV_COMMON |
147 | #ifndef EV_COMMON |
89 | # define EV_COMMON void *data; |
148 | # define EV_COMMON void *data; |
90 | #endif |
149 | #endif |
91 | #ifndef EV_PROTOTYPES |
150 | #ifndef EV_PROTOTYPES |
92 | # define EV_PROTOTYPES 1 |
151 | # define EV_PROTOTYPES 1 |
93 | #endif |
152 | #endif |
94 | |
153 | |
95 | #define EV_VERSION_MAJOR 1 |
154 | #define EV_VERSION_MAJOR 3 |
96 | #define EV_VERSION_MINOR 1 |
155 | #define EV_VERSION_MINOR 0 |
97 | |
156 | |
98 | #ifndef EV_CB_DECLARE |
157 | #ifndef EV_CB_DECLARE |
99 | # 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); |
100 | #endif |
159 | #endif |
101 | #ifndef EV_CB_INVOKE |
160 | #ifndef EV_CB_INVOKE |
… | |
… | |
105 | /* |
164 | /* |
106 | * struct member types: |
165 | * struct member types: |
107 | * private: you can look at them, but not change them, and they might not mean anything to you. |
166 | * private: you can look at them, but not change them, and they might not mean anything to you. |
108 | * ro: can be read anytime, but only changed when the watcher isn't active |
167 | * ro: can be read anytime, but only changed when the watcher isn't active |
109 | * rw: can be read and modified anytime, even when the watcher is active |
168 | * rw: can be read and modified anytime, even when the watcher is active |
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169 | * |
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170 | * some internal details that might be helpful for debugging: |
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171 | * |
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172 | * active is either 0, which means the watcher is not active, |
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173 | * or the array index of the watcher (periodics, timers) |
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174 | * or the array index + 1 (most other watchers) |
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175 | * or simply 1 for watchers that aren't in some array. |
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176 | * pending is either 0, in which case the watcher isn't, |
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177 | * or the array index + 1 in the pendings array. |
110 | */ |
178 | */ |
111 | |
179 | |
112 | /* shared by all watchers */ |
180 | /* shared by all watchers */ |
113 | #define EV_WATCHER(type) \ |
181 | #define EV_WATCHER(type) \ |
114 | int active; /* private */ \ |
182 | int active; /* private */ \ |
… | |
… | |
124 | #define EV_WATCHER_TIME(type) \ |
192 | #define EV_WATCHER_TIME(type) \ |
125 | EV_WATCHER (type) \ |
193 | EV_WATCHER (type) \ |
126 | ev_tstamp at; /* private */ |
194 | ev_tstamp at; /* private */ |
127 | |
195 | |
128 | /* base class, nothing to see here unless you subclass */ |
196 | /* base class, nothing to see here unless you subclass */ |
129 | struct ev_watcher |
197 | typedef struct ev_watcher |
130 | { |
198 | { |
131 | EV_WATCHER (ev_watcher) |
199 | EV_WATCHER (ev_watcher) |
132 | }; |
200 | } ev_watcher; |
133 | |
201 | |
134 | /* base class, nothing to see here unless you subclass */ |
202 | /* base class, nothing to see here unless you subclass */ |
135 | struct ev_watcher_list |
203 | typedef struct ev_watcher_list |
136 | { |
204 | { |
137 | EV_WATCHER_LIST (ev_watcher_list) |
205 | EV_WATCHER_LIST (ev_watcher_list) |
138 | }; |
206 | } ev_watcher_list; |
139 | |
207 | |
140 | /* base class, nothing to see here unless you subclass */ |
208 | /* base class, nothing to see here unless you subclass */ |
141 | struct ev_watcher_time |
209 | typedef struct ev_watcher_time |
142 | { |
210 | { |
143 | EV_WATCHER_TIME (ev_watcher_time) |
211 | EV_WATCHER_TIME (ev_watcher_time) |
144 | }; |
212 | } ev_watcher_time; |
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213 | |
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214 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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215 | /* revent EV_READ, EV_WRITE */ |
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216 | typedef struct ev_io |
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217 | { |
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218 | EV_WATCHER_LIST (ev_io) |
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219 | |
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220 | int fd; /* ro */ |
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221 | int events; /* ro */ |
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222 | } ev_io; |
145 | |
223 | |
146 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
224 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
147 | /* revent EV_TIMEOUT */ |
225 | /* revent EV_TIMEOUT */ |
148 | struct ev_timer |
226 | typedef struct ev_timer |
149 | { |
227 | { |
150 | EV_WATCHER_TIME (ev_timer) |
228 | EV_WATCHER_TIME (ev_timer) |
151 | |
229 | |
152 | ev_tstamp repeat; /* rw */ |
230 | ev_tstamp repeat; /* rw */ |
153 | }; |
231 | } ev_timer; |
154 | |
232 | |
155 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
233 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
156 | /* revent EV_PERIODIC */ |
234 | /* revent EV_PERIODIC */ |
157 | struct ev_periodic |
235 | typedef struct ev_periodic |
158 | { |
236 | { |
159 | EV_WATCHER_TIME (ev_periodic) |
237 | EV_WATCHER_TIME (ev_periodic) |
160 | |
238 | |
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239 | ev_tstamp offset; /* rw */ |
161 | ev_tstamp interval; /* rw */ |
240 | ev_tstamp interval; /* rw */ |
162 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
241 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
163 | }; |
242 | } ev_periodic; |
164 | |
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165 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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166 | /* revent EV_READ, EV_WRITE */ |
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167 | struct ev_io |
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168 | { |
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169 | EV_WATCHER_LIST (ev_io) |
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170 | |
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171 | int fd; /* ro */ |
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172 | int events; /* ro */ |
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173 | }; |
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174 | |
243 | |
175 | /* invoked when the given signal has been received */ |
244 | /* invoked when the given signal has been received */ |
176 | /* revent EV_SIGNAL */ |
245 | /* revent EV_SIGNAL */ |
177 | struct ev_signal |
246 | typedef struct ev_signal |
178 | { |
247 | { |
179 | EV_WATCHER_LIST (ev_signal) |
248 | EV_WATCHER_LIST (ev_signal) |
180 | |
249 | |
181 | int signum; /* ro */ |
250 | int signum; /* ro */ |
182 | }; |
251 | } ev_signal; |
183 | |
252 | |
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253 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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254 | /* revent EV_CHILD */ |
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255 | /* does not support priorities */ |
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256 | typedef struct ev_child |
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257 | { |
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258 | EV_WATCHER_LIST (ev_child) |
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259 | |
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260 | int flags; /* private */ |
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261 | int pid; /* ro */ |
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262 | int rpid; /* rw, holds the received pid */ |
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263 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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264 | } ev_child; |
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265 | |
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266 | #if EV_STAT_ENABLE |
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267 | /* st_nlink = 0 means missing file or other error */ |
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268 | # ifdef _WIN32 |
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269 | typedef struct _stati64 ev_statdata; |
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270 | # else |
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271 | typedef struct stat ev_statdata; |
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272 | # endif |
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273 | |
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274 | /* invoked each time the stat data changes for a given path */ |
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275 | /* revent EV_STAT */ |
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276 | typedef struct ev_stat |
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277 | { |
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278 | EV_WATCHER_LIST (ev_stat) |
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279 | |
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280 | ev_timer timer; /* private */ |
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281 | ev_tstamp interval; /* ro */ |
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282 | const char *path; /* ro */ |
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283 | ev_statdata prev; /* ro */ |
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284 | ev_statdata attr; /* ro */ |
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285 | |
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286 | int wd; /* wd for inotify, fd for kqueue */ |
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287 | } ev_stat; |
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288 | #endif |
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289 | |
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290 | #if EV_IDLE_ENABLE |
184 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
291 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
185 | /* revent EV_IDLE */ |
292 | /* revent EV_IDLE */ |
186 | struct ev_idle |
293 | typedef struct ev_idle |
187 | { |
294 | { |
188 | EV_WATCHER (ev_idle) |
295 | EV_WATCHER (ev_idle) |
189 | }; |
296 | } ev_idle; |
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297 | #endif |
190 | |
298 | |
191 | /* invoked for each run of the mainloop, just before the blocking call */ |
299 | /* invoked for each run of the mainloop, just before the blocking call */ |
192 | /* you can still change events in any way you like */ |
300 | /* you can still change events in any way you like */ |
193 | /* revent EV_PREPARE */ |
301 | /* revent EV_PREPARE */ |
194 | struct ev_prepare |
302 | typedef struct ev_prepare |
195 | { |
303 | { |
196 | EV_WATCHER (ev_prepare) |
304 | EV_WATCHER (ev_prepare) |
197 | }; |
305 | } ev_prepare; |
198 | |
306 | |
199 | /* invoked for each run of the mainloop, just after the blocking call */ |
307 | /* invoked for each run of the mainloop, just after the blocking call */ |
200 | /* revent EV_CHECK */ |
308 | /* revent EV_CHECK */ |
201 | struct ev_check |
309 | typedef struct ev_check |
202 | { |
310 | { |
203 | EV_WATCHER (ev_check) |
311 | EV_WATCHER (ev_check) |
204 | }; |
312 | } ev_check; |
205 | |
313 | |
206 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
314 | #if EV_FORK_ENABLE |
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315 | /* the callback gets invoked before check in the child process when a fork was detected */ |
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316 | typedef struct ev_fork |
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317 | { |
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318 | EV_WATCHER (ev_fork) |
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319 | } ev_fork; |
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320 | #endif |
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321 | |
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322 | #if EV_EMBED_ENABLE |
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323 | /* used to embed an event loop inside another */ |
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324 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
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325 | typedef struct ev_embed |
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326 | { |
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327 | EV_WATCHER (ev_embed) |
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328 | |
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329 | struct ev_loop *other; /* ro */ |
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330 | ev_io io; /* private */ |
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331 | ev_prepare prepare; /* private */ |
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332 | ev_check check; /* unused */ |
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333 | ev_timer timer; /* unused */ |
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334 | ev_periodic periodic; /* unused */ |
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335 | ev_idle idle; /* unused */ |
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336 | ev_fork fork; /* unused */ |
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337 | } ev_embed; |
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338 | #endif |
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339 | |
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340 | #if EV_ASYNC_ENABLE |
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341 | /* invoked when somebody calls ev_async_send on the watcher */ |
207 | /* revent EV_CHILD */ |
342 | /* revent EV_ASYNC */ |
208 | /* does not support priorities */ |
343 | typedef struct ev_async |
209 | struct ev_child |
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210 | { |
344 | { |
211 | EV_WATCHER_LIST (ev_child) |
345 | EV_WATCHER (ev_async) |
212 | |
346 | |
213 | int pid; /* ro */ |
347 | EV_ATOMIC_T sent; /* private */ |
214 | int rpid; /* rw, holds the received pid */ |
348 | } ev_async; |
215 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
349 | |
216 | }; |
350 | # define ev_async_pending(w) ((w)->sent + 0) |
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351 | #endif |
217 | |
352 | |
218 | /* the presence of this union forces similar struct layout */ |
353 | /* the presence of this union forces similar struct layout */ |
219 | union ev_any_watcher |
354 | union ev_any_watcher |
220 | { |
355 | { |
221 | struct ev_watcher w; |
356 | struct ev_watcher w; |
222 | struct ev_watcher_list wl; |
357 | struct ev_watcher_list wl; |
223 | |
358 | |
224 | struct ev_io io; |
359 | struct ev_io io; |
225 | struct ev_timer timer; |
360 | struct ev_timer timer; |
226 | struct ev_periodic periodic; |
361 | struct ev_periodic periodic; |
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362 | struct ev_signal signal; |
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363 | struct ev_child child; |
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364 | #if EV_STAT_ENABLE |
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365 | struct ev_stat stat; |
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366 | #endif |
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367 | #if EV_IDLE_ENABLE |
227 | struct ev_idle idle; |
368 | struct ev_idle idle; |
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369 | #endif |
228 | struct ev_prepare prepare; |
370 | struct ev_prepare prepare; |
229 | struct ev_check check; |
371 | struct ev_check check; |
230 | struct ev_signal signal; |
372 | #if EV_FORK_ENABLE |
231 | struct ev_child child; |
373 | struct ev_fork fork; |
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374 | #endif |
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375 | #if EV_EMBED_ENABLE |
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376 | struct ev_embed embed; |
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377 | #endif |
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378 | #if EV_ASYNC_ENABLE |
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379 | struct ev_async async; |
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380 | #endif |
232 | }; |
381 | }; |
233 | |
382 | |
234 | /* bits for ev_default_loop and ev_loop_new */ |
383 | /* bits for ev_default_loop and ev_loop_new */ |
235 | /* the default */ |
384 | /* the default */ |
236 | #define EVFLAG_AUTO 0x00000000 /* not quite a mask */ |
385 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
237 | |
386 | /* flag bits */ |
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387 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
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388 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
238 | /* method bits to be ored together */ |
389 | /* method bits to be ored together */ |
239 | #define EVMETHOD_SELECT 0x00000001 /* about anywhere */ |
390 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
240 | #define EVMETHOD_POLL 0x00000002 /* !win */ |
391 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
241 | #define EVMETHOD_EPOLL 0x00000004 /* linux */ |
392 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
242 | #define EVMETHOD_KQUEUE 0x00000008 /* bsd */ |
393 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
243 | #define EVMETHOD_DEVPOLL 0x00000010 /* solaris 8 */ /* NYI */ |
394 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
244 | #define EVMETHOD_PORT 0x00000020 /* solaris 10 */ |
395 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
245 | #define EVMETHOD_ALL 0x0000ffff /* all methods, also future ones, or so */ |
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246 | |
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247 | /* flag bits */ |
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248 | #define EVFLAG_NOENV 0x01000000 /* do NOT consult environment */ |
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249 | |
396 | |
250 | #if EV_PROTOTYPES |
397 | #if EV_PROTOTYPES |
251 | int ev_version_major (void); |
398 | int ev_version_major (void); |
252 | int ev_version_minor (void); |
399 | int ev_version_minor (void); |
253 | |
400 | |
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401 | unsigned int ev_supported_backends (void); |
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402 | unsigned int ev_recommended_backends (void); |
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403 | unsigned int ev_embeddable_backends (void); |
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404 | |
254 | ev_tstamp ev_time (void); |
405 | ev_tstamp ev_time (void); |
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406 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
255 | |
407 | |
256 | /* Sets the allocation function to use, works like realloc. |
408 | /* Sets the allocation function to use, works like realloc. |
257 | * It is used to allocate and free memory. |
409 | * It is used to allocate and free memory. |
258 | * If it returns zero when memory needs to be allocated, the library might abort |
410 | * If it returns zero when memory needs to be allocated, the library might abort |
259 | * or take some potentially destructive action. |
411 | * or take some potentially destructive action. |
… | |
… | |
266 | * (such as failed select, poll, epoll_wait) |
418 | * (such as failed select, poll, epoll_wait) |
267 | */ |
419 | */ |
268 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
420 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
269 | |
421 | |
270 | # if EV_MULTIPLICITY |
422 | # if EV_MULTIPLICITY |
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423 | EV_INLINE struct ev_loop * |
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424 | ev_default_loop_uc (void) |
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425 | { |
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426 | extern struct ev_loop *ev_default_loop_ptr; |
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427 | |
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428 | return ev_default_loop_ptr; |
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429 | } |
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430 | |
271 | /* the default loop is the only one that handles signals and child watchers */ |
431 | /* the default loop is the only one that handles signals and child watchers */ |
272 | /* you can call this as often as you like */ |
432 | /* you can call this as often as you like */ |
273 | static struct ev_loop * |
433 | EV_INLINE struct ev_loop * |
274 | ev_default_loop (unsigned int flags) |
434 | ev_default_loop (unsigned int flags) |
275 | { |
435 | { |
276 | extern struct ev_loop *ev_default_loop_ptr; |
436 | struct ev_loop *loop = ev_default_loop_uc (); |
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437 | |
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438 | if (!loop) |
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439 | { |
277 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
440 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
278 | |
441 | |
279 | if (!ev_default_loop_ptr) |
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280 | ev_default_loop_init (flags); |
442 | loop = ev_default_loop_init (flags); |
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443 | } |
281 | |
444 | |
282 | return ev_default_loop_ptr; |
445 | return loop; |
283 | } |
446 | } |
284 | |
447 | |
285 | /* create and destroy alternative loops that don't handle signals */ |
448 | /* create and destroy alternative loops that don't handle signals */ |
286 | struct ev_loop *ev_loop_new (unsigned int flags); |
449 | struct ev_loop *ev_loop_new (unsigned int flags); |
287 | void ev_loop_destroy (EV_P); |
450 | void ev_loop_destroy (EV_P); |
… | |
… | |
291 | |
454 | |
292 | # else |
455 | # else |
293 | |
456 | |
294 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
457 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
295 | |
458 | |
296 | static ev_tstamp |
459 | EV_INLINE ev_tstamp |
297 | ev_now (void) |
460 | ev_now (void) |
298 | { |
461 | { |
299 | extern ev_tstamp ev_rt_now; |
462 | extern ev_tstamp ev_rt_now; |
300 | |
463 | |
301 | return ev_rt_now; |
464 | return ev_rt_now; |
302 | } |
465 | } |
303 | # endif |
466 | # endif |
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467 | |
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468 | EV_INLINE int |
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469 | ev_is_default_loop (EV_P) |
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470 | { |
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471 | #if EV_MULTIPLICITY |
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472 | extern struct ev_loop *ev_default_loop_ptr; |
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473 | |
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474 | return !!(EV_A == ev_default_loop_ptr); |
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475 | #else |
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476 | return 1; |
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477 | #endif |
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478 | } |
304 | |
479 | |
305 | void ev_default_destroy (void); /* destroy the default loop */ |
480 | void ev_default_destroy (void); /* destroy the default loop */ |
306 | /* this needs to be called after fork, to duplicate the default loop */ |
481 | /* this needs to be called after fork, to duplicate the default loop */ |
307 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
482 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
308 | /* you can call it in either the parent or the child */ |
483 | /* you can call it in either the parent or the child */ |
309 | /* you can actually call it at any time, anywhere :) */ |
484 | /* you can actually call it at any time, anywhere :) */ |
310 | void ev_default_fork (void); |
485 | void ev_default_fork (void); |
311 | |
486 | |
312 | unsigned int ev_method (EV_P); |
487 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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488 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
313 | #endif |
489 | #endif |
314 | |
490 | |
315 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
491 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
316 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
492 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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493 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
317 | #define EVUNLOOP_ONE 1 /* unloop once */ |
494 | #define EVUNLOOP_ONE 1 /* unloop once */ |
318 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
495 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
319 | |
496 | |
320 | #if EV_PROTOTYPES |
497 | #if EV_PROTOTYPES |
321 | void ev_loop (EV_P_ int flags); |
498 | void ev_loop (EV_P_ int flags); |
322 | 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 */ |
499 | 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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500 | |
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501 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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502 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
323 | |
503 | |
324 | /* |
504 | /* |
325 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
505 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
326 | * keeps one reference. if you have a long-runing watcher you never unregister that |
506 | * keeps one reference. if you have a long-runing watcher you never unregister that |
327 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
507 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
… | |
… | |
334 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
514 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
335 | #endif |
515 | #endif |
336 | |
516 | |
337 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
517 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
338 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
518 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
339 | #define ev_init(ev,cb_) do { \ |
519 | #define ev_init(ev,cb_) do { \ |
340 | ((struct ev_watcher *)(void *)(ev))->active = \ |
520 | ((ev_watcher *)(void *)(ev))->active = \ |
341 | ((struct ev_watcher *)(void *)(ev))->pending = \ |
521 | ((ev_watcher *)(void *)(ev))->pending = \ |
342 | ((struct ev_watcher *)(void *)(ev))->priority = 0; \ |
522 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
343 | ev_set_cb ((ev), cb_); \ |
523 | ev_set_cb ((ev), cb_); \ |
344 | } while (0) |
524 | } while (0) |
345 | |
525 | |
346 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
526 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
347 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
527 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
348 | #define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
528 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
349 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
529 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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530 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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531 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
350 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
532 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
351 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
533 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
352 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
534 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
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535 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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536 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
353 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
537 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
354 | |
538 | |
355 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
539 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
356 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
540 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
357 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
541 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
358 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
542 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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543 | #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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544 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
359 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
545 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
360 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
546 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
361 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
547 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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548 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
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549 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
362 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
550 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
363 | |
551 | |
364 | #define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
552 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
365 | #define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
553 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
366 | |
554 | |
367 | #define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ |
555 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
368 | #define ev_cb(ev) (ev)->cb /* rw */ |
556 | #define ev_cb(ev) (ev)->cb /* rw */ |
369 | #define ev_set_priority(ev,pri) ev_priority (ev) = (pri) |
557 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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558 | |
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559 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
370 | |
560 | |
371 | #ifndef ev_set_cb |
561 | #ifndef ev_set_cb |
372 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
562 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
373 | #endif |
563 | #endif |
374 | |
564 | |
… | |
… | |
379 | /* feeds an event into a watcher as if the event actually occured */ |
569 | /* feeds an event into a watcher as if the event actually occured */ |
380 | /* accepts any ev_watcher type */ |
570 | /* accepts any ev_watcher type */ |
381 | void ev_feed_event (EV_P_ void *w, int revents); |
571 | void ev_feed_event (EV_P_ void *w, int revents); |
382 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
572 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
383 | void ev_feed_signal_event (EV_P_ int signum); |
573 | void ev_feed_signal_event (EV_P_ int signum); |
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574 | void ev_invoke (EV_P_ void *w, int revents); |
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575 | int ev_clear_pending (EV_P_ void *w); |
384 | |
576 | |
385 | void ev_io_start (EV_P_ struct ev_io *w); |
577 | void ev_io_start (EV_P_ ev_io *w); |
386 | void ev_io_stop (EV_P_ struct ev_io *w); |
578 | void ev_io_stop (EV_P_ ev_io *w); |
387 | |
579 | |
388 | void ev_timer_start (EV_P_ struct ev_timer *w); |
580 | void ev_timer_start (EV_P_ ev_timer *w); |
389 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
581 | void ev_timer_stop (EV_P_ ev_timer *w); |
390 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
582 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
391 | void ev_timer_again (EV_P_ struct ev_timer *w); |
583 | void ev_timer_again (EV_P_ ev_timer *w); |
392 | |
584 | |
393 | #if EV_PERIODICS |
585 | #if EV_PERIODIC_ENABLE |
394 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
586 | void ev_periodic_start (EV_P_ ev_periodic *w); |
395 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
587 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
396 | void ev_periodic_again (EV_P_ struct ev_periodic *w); |
588 | void ev_periodic_again (EV_P_ ev_periodic *w); |
397 | #endif |
589 | #endif |
398 | |
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399 | void ev_idle_start (EV_P_ struct ev_idle *w); |
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400 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
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401 | |
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402 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
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403 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
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404 | |
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405 | void ev_check_start (EV_P_ struct ev_check *w); |
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406 | void ev_check_stop (EV_P_ struct ev_check *w); |
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407 | |
590 | |
408 | /* only supported in the default loop */ |
591 | /* only supported in the default loop */ |
409 | void ev_signal_start (EV_P_ struct ev_signal *w); |
592 | void ev_signal_start (EV_P_ ev_signal *w); |
410 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
593 | void ev_signal_stop (EV_P_ ev_signal *w); |
411 | |
594 | |
412 | /* only supported in the default loop */ |
595 | /* only supported in the default loop */ |
413 | void ev_child_start (EV_P_ struct ev_child *w); |
596 | void ev_child_start (EV_P_ ev_child *w); |
414 | void ev_child_stop (EV_P_ struct ev_child *w); |
597 | void ev_child_stop (EV_P_ ev_child *w); |
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598 | |
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599 | # if EV_STAT_ENABLE |
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600 | void ev_stat_start (EV_P_ ev_stat *w); |
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601 | void ev_stat_stop (EV_P_ ev_stat *w); |
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602 | void ev_stat_stat (EV_P_ ev_stat *w); |
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603 | # endif |
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604 | |
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605 | # if EV_IDLE_ENABLE |
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606 | void ev_idle_start (EV_P_ ev_idle *w); |
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607 | void ev_idle_stop (EV_P_ ev_idle *w); |
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608 | # endif |
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609 | |
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610 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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611 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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612 | |
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613 | void ev_check_start (EV_P_ ev_check *w); |
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614 | void ev_check_stop (EV_P_ ev_check *w); |
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615 | |
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616 | # if EV_FORK_ENABLE |
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617 | void ev_fork_start (EV_P_ ev_fork *w); |
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618 | void ev_fork_stop (EV_P_ ev_fork *w); |
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619 | # endif |
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620 | |
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621 | # if EV_EMBED_ENABLE |
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622 | /* only supported when loop to be embedded is in fact embeddable */ |
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623 | void ev_embed_start (EV_P_ ev_embed *w); |
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624 | void ev_embed_stop (EV_P_ ev_embed *w); |
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625 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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626 | # endif |
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627 | |
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628 | # if EV_ASYNC_ENABLE |
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629 | void ev_async_start (EV_P_ ev_async *w); |
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630 | void ev_async_stop (EV_P_ ev_async *w); |
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631 | void ev_async_send (EV_P_ ev_async *w); |
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632 | # endif |
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633 | |
415 | #endif |
634 | #endif |
416 | |
635 | |
417 | #ifdef __cplusplus |
636 | #ifdef __cplusplus |
418 | } |
637 | } |
419 | #endif |
638 | #endif |