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 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
6 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
7 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
8 | * |
27 | * |
9 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
10 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
11 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
12 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
13 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
14 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
15 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
16 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
38 | */ |
29 | |
39 | |
30 | #ifndef EV_H |
40 | #ifndef EV_H__ |
31 | #define EV_H |
41 | #define EV_H__ |
32 | |
42 | |
33 | #ifdef __cplusplus |
43 | #ifdef __cplusplus |
34 | extern "C" { |
44 | extern "C" { |
35 | #endif |
45 | #endif |
36 | |
46 | |
… | |
… | |
42 | #endif |
52 | #endif |
43 | #ifndef EV_MAXPRI |
53 | #ifndef EV_MAXPRI |
44 | # define EV_MAXPRI +2 |
54 | # define EV_MAXPRI +2 |
45 | #endif |
55 | #endif |
46 | |
56 | |
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57 | #ifndef EV_MULTIPLICITY |
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58 | # define EV_MULTIPLICITY 1 |
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59 | #endif |
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60 | |
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61 | #ifndef EV_PERIODIC_ENABLE |
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62 | # define EV_PERIODIC_ENABLE 1 |
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63 | #endif |
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64 | |
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65 | #ifndef EV_STAT_ENABLE |
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66 | # define EV_STAT_ENABLE 1 |
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67 | #endif |
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68 | |
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69 | #ifndef EV_IDLE_ENABLE |
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70 | # define EV_IDLE_ENABLE 1 |
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71 | #endif |
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72 | |
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73 | #ifndef EV_FORK_ENABLE |
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74 | # define EV_FORK_ENABLE 1 |
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75 | #endif |
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76 | |
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77 | #ifndef EV_EMBED_ENABLE |
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78 | # define EV_EMBED_ENABLE 1 |
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79 | #endif |
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80 | |
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81 | /*****************************************************************************/ |
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82 | |
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83 | #if EV_STAT_ENABLE |
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84 | # include <sys/stat.h> |
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85 | #endif |
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86 | |
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87 | /* support multiple event loops? */ |
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88 | #if EV_MULTIPLICITY |
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89 | struct ev_loop; |
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90 | # define EV_P struct ev_loop *loop |
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91 | # define EV_P_ EV_P, |
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92 | # define EV_A loop |
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93 | # define EV_A_ EV_A, |
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94 | # define EV_DEFAULT ev_default_loop (0) |
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95 | # define EV_DEFAULT_ EV_DEFAULT, |
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96 | #else |
47 | #define EV_P void |
97 | # define EV_P void |
48 | #define EV_P_ |
98 | # define EV_P_ |
49 | #define EV_A |
99 | # define EV_A |
50 | #define EV_A_ |
100 | # define EV_A_ |
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101 | # define EV_DEFAULT |
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102 | # define EV_DEFAULT_ |
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103 | |
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104 | # undef EV_EMBED_ENABLE |
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105 | #endif |
51 | |
106 | |
52 | /* eventmask, revents, events... */ |
107 | /* eventmask, revents, events... */ |
53 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
108 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
54 | #define EV_NONE 0x00 |
109 | #define EV_NONE 0x00L /* no events */ |
55 | #define EV_READ 0x01 |
110 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
56 | #define EV_WRITE 0x02 |
111 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
57 | #define EV_TIMEOUT 0x000100 |
112 | #define EV_IOFDSET 0x80L /* internal use only */ |
58 | #define EV_PERIODIC 0x000200 |
113 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
59 | #define EV_SIGNAL 0x000400 |
114 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
60 | #define EV_IDLE 0x000800 |
115 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
61 | #define EV_CHECK 0x001000 |
116 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
62 | #define EV_PREPARE 0x002000 |
117 | #define EV_STAT 0x00001000L /* stat data changed */ |
63 | #define EV_CHILD 0x004000 |
118 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
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119 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
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120 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
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121 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
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122 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
64 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
123 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
65 | |
124 | |
66 | /* can be used to add custom fields to all watchers */ |
125 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
67 | #ifndef EV_COMMON |
126 | #ifndef EV_COMMON |
68 | # define EV_COMMON void *data |
127 | # define EV_COMMON void *data; |
69 | #endif |
128 | #endif |
70 | #ifndef EV_PROTOTYPES |
129 | #ifndef EV_PROTOTYPES |
71 | # define EV_PROTOTYPES 1 |
130 | # define EV_PROTOTYPES 1 |
72 | #endif |
131 | #endif |
73 | |
132 | |
74 | #define EV_VERSION_MAJOR 1 |
133 | #define EV_VERSION_MAJOR 3 |
75 | #define EV_VERSION_MINOR 1 |
134 | #define EV_VERSION_MINOR 0 |
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135 | |
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136 | #ifndef EV_CB_DECLARE |
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137 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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138 | #endif |
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139 | #ifndef EV_CB_INVOKE |
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140 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
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141 | #endif |
76 | |
142 | |
77 | /* |
143 | /* |
78 | * struct member types: |
144 | * struct member types: |
79 | * private: you can look at them, but not change them, and they might not mean anything to you. |
145 | * private: you can look at them, but not change them, and they might not mean anything to you. |
80 | * ro: can be read anytime, but only changed when the watcher isn't active |
146 | * ro: can be read anytime, but only changed when the watcher isn't active |
… | |
… | |
83 | |
149 | |
84 | /* shared by all watchers */ |
150 | /* shared by all watchers */ |
85 | #define EV_WATCHER(type) \ |
151 | #define EV_WATCHER(type) \ |
86 | int active; /* private */ \ |
152 | int active; /* private */ \ |
87 | int pending; /* private */ \ |
153 | int pending; /* private */ \ |
88 | int priority; /* ro */ \ |
154 | int priority; /* private */ \ |
89 | EV_COMMON; /* rw */ \ |
155 | EV_COMMON /* rw */ \ |
90 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
156 | EV_CB_DECLARE (type) /* private */ |
91 | |
157 | |
92 | #define EV_WATCHER_LIST(type) \ |
158 | #define EV_WATCHER_LIST(type) \ |
93 | EV_WATCHER (type); \ |
159 | EV_WATCHER (type) \ |
94 | struct ev_watcher_list *next /* private */ |
160 | struct ev_watcher_list *next; /* private */ |
95 | |
161 | |
96 | #define EV_WATCHER_TIME(type) \ |
162 | #define EV_WATCHER_TIME(type) \ |
97 | EV_WATCHER (type); \ |
163 | EV_WATCHER (type) \ |
98 | ev_tstamp at /* private */ |
164 | ev_tstamp at; /* private */ |
99 | |
165 | |
100 | /* base class, nothing to see here unless you subclass */ |
166 | /* base class, nothing to see here unless you subclass */ |
101 | struct ev_watcher { |
167 | typedef struct ev_watcher |
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168 | { |
102 | EV_WATCHER (ev_watcher); |
169 | EV_WATCHER (ev_watcher) |
103 | }; |
170 | } ev_watcher; |
104 | |
171 | |
105 | /* base class, nothing to see here unless you subclass */ |
172 | /* base class, nothing to see here unless you subclass */ |
106 | struct ev_watcher_list { |
173 | typedef struct ev_watcher_list |
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174 | { |
107 | EV_WATCHER_LIST (ev_watcher_list); |
175 | EV_WATCHER_LIST (ev_watcher_list) |
108 | }; |
176 | } ev_watcher_list; |
109 | |
177 | |
110 | /* base class, nothing to see here unless you subclass */ |
178 | /* base class, nothing to see here unless you subclass */ |
111 | struct ev_watcher_time { |
179 | typedef struct ev_watcher_time |
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180 | { |
112 | EV_WATCHER_TIME (ev_watcher_time); |
181 | EV_WATCHER_TIME (ev_watcher_time) |
113 | }; |
182 | } ev_watcher_time; |
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183 | |
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184 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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185 | /* revent EV_READ, EV_WRITE */ |
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186 | typedef struct ev_io |
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187 | { |
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188 | EV_WATCHER_LIST (ev_io) |
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189 | |
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190 | int fd; /* ro */ |
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191 | int events; /* ro */ |
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192 | } ev_io; |
114 | |
193 | |
115 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
194 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
116 | /* revent EV_TIMEOUT */ |
195 | /* revent EV_TIMEOUT */ |
117 | struct ev_timer |
196 | typedef struct ev_timer |
118 | { |
197 | { |
119 | EV_WATCHER_TIME (ev_timer); |
198 | EV_WATCHER_TIME (ev_timer) |
120 | |
199 | |
121 | ev_tstamp repeat; /* rw */ |
200 | ev_tstamp repeat; /* rw */ |
122 | }; |
201 | } ev_timer; |
123 | |
202 | |
124 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
203 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
125 | /* revent EV_PERIODIC */ |
204 | /* revent EV_PERIODIC */ |
126 | struct ev_periodic |
205 | typedef struct ev_periodic |
127 | { |
206 | { |
128 | EV_WATCHER_TIME (ev_periodic); |
207 | EV_WATCHER_TIME (ev_periodic) |
129 | |
208 | |
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209 | ev_tstamp offset; /* rw */ |
130 | ev_tstamp interval; /* rw */ |
210 | ev_tstamp interval; /* rw */ |
131 | }; |
211 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
132 | |
212 | } ev_periodic; |
133 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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134 | /* revent EV_READ, EV_WRITE */ |
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135 | struct ev_io |
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136 | { |
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137 | EV_WATCHER_LIST (ev_io); |
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138 | |
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139 | int fd; /* ro */ |
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140 | int events; /* ro */ |
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141 | }; |
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142 | |
213 | |
143 | /* invoked when the given signal has been received */ |
214 | /* invoked when the given signal has been received */ |
144 | /* revent EV_SIGNAL */ |
215 | /* revent EV_SIGNAL */ |
145 | struct ev_signal |
216 | typedef struct ev_signal |
146 | { |
217 | { |
147 | EV_WATCHER_LIST (ev_signal); |
218 | EV_WATCHER_LIST (ev_signal) |
148 | |
219 | |
149 | int signum; /* ro */ |
220 | int signum; /* ro */ |
150 | }; |
221 | } ev_signal; |
151 | |
222 | |
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223 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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224 | /* revent EV_CHILD */ |
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225 | /* does not support priorities */ |
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226 | typedef struct ev_child |
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227 | { |
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228 | EV_WATCHER_LIST (ev_child) |
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229 | |
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230 | int flags; /* private */ |
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231 | int pid; /* ro */ |
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232 | int rpid; /* rw, holds the received pid */ |
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233 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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234 | } ev_child; |
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235 | |
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236 | #if EV_STAT_ENABLE |
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237 | /* st_nlink = 0 means missing file or other error */ |
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238 | # ifdef _WIN32 |
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239 | typedef struct _stati64 ev_statdata; |
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240 | # else |
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241 | typedef struct stat ev_statdata; |
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242 | # endif |
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243 | |
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244 | /* invoked each time the stat data changes for a given path */ |
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245 | /* revent EV_STAT */ |
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246 | typedef struct ev_stat |
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247 | { |
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248 | EV_WATCHER_LIST (ev_stat) |
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249 | |
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250 | ev_timer timer; /* private */ |
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251 | ev_tstamp interval; /* ro */ |
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252 | const char *path; /* ro */ |
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253 | ev_statdata prev; /* ro */ |
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254 | ev_statdata attr; /* ro */ |
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255 | |
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256 | int wd; /* wd for inotify, fd for kqueue */ |
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257 | } ev_stat; |
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258 | #endif |
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259 | |
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260 | #if EV_IDLE_ENABLE |
152 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
261 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
153 | /* revent EV_IDLE */ |
262 | /* revent EV_IDLE */ |
154 | struct ev_idle |
263 | typedef struct ev_idle |
155 | { |
264 | { |
156 | EV_WATCHER (ev_idle); |
265 | EV_WATCHER (ev_idle) |
157 | }; |
266 | } ev_idle; |
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267 | #endif |
158 | |
268 | |
159 | /* invoked for each run of the mainloop, just before the blocking call */ |
269 | /* invoked for each run of the mainloop, just before the blocking call */ |
160 | /* you can still change events in any way you like */ |
270 | /* you can still change events in any way you like */ |
161 | /* revent EV_PREPARE */ |
271 | /* revent EV_PREPARE */ |
162 | struct ev_prepare |
272 | typedef struct ev_prepare |
163 | { |
273 | { |
164 | EV_WATCHER (ev_prepare); |
274 | EV_WATCHER (ev_prepare) |
165 | }; |
275 | } ev_prepare; |
166 | |
276 | |
167 | /* invoked for each run of the mainloop, just after the blocking call */ |
277 | /* invoked for each run of the mainloop, just after the blocking call */ |
168 | /* revent EV_CHECK */ |
278 | /* revent EV_CHECK */ |
169 | struct ev_check |
279 | typedef struct ev_check |
170 | { |
280 | { |
171 | EV_WATCHER (ev_check); |
281 | EV_WATCHER (ev_check) |
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282 | } ev_check; |
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283 | |
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284 | #if EV_FORK_ENABLE |
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285 | /* the callback gets invoked before check in the child process when a fork was detected */ |
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286 | typedef struct ev_fork |
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287 | { |
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288 | EV_WATCHER (ev_fork) |
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289 | } ev_fork; |
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290 | #endif |
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291 | |
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292 | #if EV_EMBED_ENABLE |
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293 | /* used to embed an event loop inside another */ |
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294 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
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295 | typedef struct ev_embed |
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296 | { |
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297 | EV_WATCHER (ev_embed) |
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298 | |
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299 | struct ev_loop *other; /* ro */ |
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300 | ev_io io; /* private */ |
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301 | ev_prepare prepare; /* private */ |
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302 | ev_check check; /* unused */ |
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303 | ev_timer timer; /* unused */ |
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304 | ev_periodic periodic; /* unused */ |
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305 | ev_idle idle; /* unused */ |
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306 | ev_fork fork; /* unused */ |
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307 | } ev_embed; |
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308 | #endif |
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309 | |
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310 | /* the presence of this union forces similar struct layout */ |
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311 | union ev_any_watcher |
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312 | { |
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313 | struct ev_watcher w; |
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314 | struct ev_watcher_list wl; |
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315 | |
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316 | struct ev_io io; |
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317 | struct ev_timer timer; |
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318 | struct ev_periodic periodic; |
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319 | struct ev_signal signal; |
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320 | struct ev_child child; |
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321 | #if EV_STAT_ENABLE |
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322 | struct ev_stat stat; |
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323 | #endif |
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324 | #if EV_IDLE_ENABLE |
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325 | struct ev_idle idle; |
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326 | #endif |
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327 | struct ev_prepare prepare; |
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328 | struct ev_check check; |
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329 | #if EV_FORK_ENABLE |
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330 | struct ev_fork fork; |
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331 | #endif |
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332 | #if EV_EMBED_ENABLE |
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333 | struct ev_embed embed; |
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334 | #endif |
172 | }; |
335 | }; |
173 | |
336 | |
174 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
337 | /* bits for ev_default_loop and ev_loop_new */ |
175 | /* revent EV_CHILD */ |
338 | /* the default */ |
176 | /* does not support priorities */ |
339 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
177 | struct ev_child |
340 | /* flag bits */ |
178 | { |
341 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
179 | EV_WATCHER_LIST (ev_child); |
342 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
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343 | /* method bits to be ored together */ |
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344 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
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345 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
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346 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
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347 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
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348 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
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349 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
180 | |
350 | |
181 | int pid; /* ro */ |
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182 | int rpid; /* rw, holds the received pid */ |
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183 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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184 | }; |
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185 | |
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186 | #define EVMETHOD_AUTO 0 /* consults environment */ |
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187 | #define EVMETHOD_SELECT 1 |
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188 | #define EVMETHOD_POLL 2 |
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189 | #define EVMETHOD_EPOLL 4 |
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190 | #define EVMETHOD_KQUEUE 8 |
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191 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
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192 | #define EVMETHOD_PORT 32 /* NYI */ |
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193 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
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194 | #if EV_PROTOTYPES |
351 | #if EV_PROTOTYPES |
195 | int ev_method (EV_P); |
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196 | int ev_init (EV_P_ int methods); /* returns ev_method */ |
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197 | int ev_version_major (void); |
352 | int ev_version_major (void); |
198 | int ev_version_minor (void); |
353 | int ev_version_minor (void); |
199 | |
354 | |
200 | /* these three calls are suitable for plugging into pthread_atfork */ |
355 | unsigned int ev_supported_backends (void); |
201 | void ev_fork_prepare (void); |
356 | unsigned int ev_recommended_backends (void); |
202 | void ev_fork_parent (void); |
357 | unsigned int ev_embeddable_backends (void); |
203 | void ev_fork_child (void); |
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204 | |
358 | |
205 | ev_tstamp ev_time (void); |
359 | ev_tstamp ev_time (void); |
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360 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
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361 | |
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362 | /* Sets the allocation function to use, works like realloc. |
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363 | * It is used to allocate and free memory. |
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364 | * If it returns zero when memory needs to be allocated, the library might abort |
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365 | * or take some potentially destructive action. |
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366 | * The default is your system realloc function. |
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367 | */ |
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368 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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369 | |
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370 | /* set the callback function to call on a |
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371 | * retryable syscall error |
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372 | * (such as failed select, poll, epoll_wait) |
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373 | */ |
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374 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
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375 | |
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376 | # if EV_MULTIPLICITY |
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377 | /* the default loop is the only one that handles signals and child watchers */ |
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378 | /* you can call this as often as you like */ |
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379 | static struct ev_loop * |
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380 | ev_default_loop (unsigned int flags) |
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381 | { |
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382 | extern struct ev_loop *ev_default_loop_ptr; |
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383 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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384 | |
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385 | if (!ev_default_loop_ptr) |
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386 | ev_default_loop_init (flags); |
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387 | |
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388 | return ev_default_loop_ptr; |
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389 | } |
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390 | |
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391 | /* create and destroy alternative loops that don't handle signals */ |
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392 | struct ev_loop *ev_loop_new (unsigned int flags); |
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393 | void ev_loop_destroy (EV_P); |
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394 | void ev_loop_fork (EV_P); |
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395 | |
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396 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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397 | |
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398 | # else |
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399 | |
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400 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
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401 | |
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402 | static ev_tstamp |
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403 | ev_now (void) |
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404 | { |
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405 | extern ev_tstamp ev_rt_now; |
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406 | |
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407 | return ev_rt_now; |
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408 | } |
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409 | # endif |
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410 | |
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411 | void ev_default_destroy (void); /* destroy the default loop */ |
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412 | /* this needs to be called after fork, to duplicate the default loop */ |
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413 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
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414 | /* you can call it in either the parent or the child */ |
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415 | /* you can actually call it at any time, anywhere :) */ |
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416 | void ev_default_fork (void); |
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417 | |
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418 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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419 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
206 | #endif |
420 | #endif |
207 | |
421 | |
208 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
422 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
209 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
423 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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424 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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425 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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426 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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427 | |
210 | #if EV_PROTOTYPES |
428 | #if EV_PROTOTYPES |
211 | void ev_loop (EV_P_ int flags); |
429 | void ev_loop (EV_P_ int flags); |
212 | void ev_unloop (EV_P_ int status); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
430 | 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 */ |
213 | |
431 | |
214 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
432 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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433 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
215 | |
434 | |
216 | /* |
435 | /* |
217 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
436 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
218 | * keeps one reference. if you have a long-runing watcher you never unregister that |
437 | * keeps one reference. if you have a long-runing watcher you never unregister that |
219 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
438 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
… | |
… | |
225 | /* if timeout is < 0, do wait indefinitely */ |
444 | /* if timeout is < 0, do wait indefinitely */ |
226 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
445 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
227 | #endif |
446 | #endif |
228 | |
447 | |
229 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
448 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
230 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
449 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
231 | #define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0) |
450 | #define ev_init(ev,cb_) do { \ |
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451 | ((ev_watcher *)(void *)(ev))->active = \ |
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452 | ((ev_watcher *)(void *)(ev))->pending = \ |
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453 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
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454 | ev_set_cb ((ev), cb_); \ |
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455 | } while (0) |
232 | |
456 | |
233 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
457 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
234 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
458 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
235 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
459 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
236 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
460 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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461 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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462 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
237 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
463 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
238 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
464 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
239 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
465 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
240 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
466 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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467 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
241 | |
468 | |
242 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
469 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
243 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
470 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
244 | #define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) |
471 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
245 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
472 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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473 | #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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474 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
246 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
475 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
247 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
476 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
248 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
477 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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478 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
249 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
479 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
250 | |
480 | |
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481 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
251 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
482 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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483 | |
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484 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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485 | #define ev_cb(ev) (ev)->cb /* rw */ |
252 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
486 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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487 | |
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488 | #ifndef ev_set_cb |
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489 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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490 | #endif |
253 | |
491 | |
254 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
492 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
255 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
493 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
256 | #if EV_PROTOTYPES |
494 | #if EV_PROTOTYPES |
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495 | |
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496 | /* feeds an event into a watcher as if the event actually occured */ |
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497 | /* accepts any ev_watcher type */ |
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498 | void ev_feed_event (EV_P_ void *w, int revents); |
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499 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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500 | void ev_feed_signal_event (EV_P_ int signum); |
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501 | void ev_invoke (EV_P_ void *w, int revents); |
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502 | int ev_clear_pending (EV_P_ void *w); |
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503 | |
257 | void ev_io_start (EV_P_ struct ev_io *w); |
504 | void ev_io_start (EV_P_ ev_io *w); |
258 | void ev_io_stop (EV_P_ struct ev_io *w); |
505 | void ev_io_stop (EV_P_ ev_io *w); |
259 | |
506 | |
260 | void ev_timer_start (EV_P_ struct ev_timer *w); |
507 | void ev_timer_start (EV_P_ ev_timer *w); |
261 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
508 | void ev_timer_stop (EV_P_ ev_timer *w); |
262 | void ev_timer_again (EV_P_ struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
509 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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510 | void ev_timer_again (EV_P_ ev_timer *w); |
263 | |
511 | |
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512 | #if EV_PERIODIC_ENABLE |
264 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
513 | void ev_periodic_start (EV_P_ ev_periodic *w); |
265 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
514 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
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515 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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516 | #endif |
266 | |
517 | |
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518 | /* only supported in the default loop */ |
267 | void ev_signal_start (EV_P_ struct ev_signal *w); |
519 | void ev_signal_start (EV_P_ ev_signal *w); |
268 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
520 | void ev_signal_stop (EV_P_ ev_signal *w); |
269 | |
521 | |
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522 | /* only supported in the default loop */ |
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523 | void ev_child_start (EV_P_ ev_child *w); |
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524 | void ev_child_stop (EV_P_ ev_child *w); |
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525 | |
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526 | # if EV_STAT_ENABLE |
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527 | void ev_stat_start (EV_P_ ev_stat *w); |
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528 | void ev_stat_stop (EV_P_ ev_stat *w); |
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529 | void ev_stat_stat (EV_P_ ev_stat *w); |
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530 | # endif |
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531 | |
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532 | # if EV_IDLE_ENABLE |
270 | void ev_idle_start (EV_P_ struct ev_idle *w); |
533 | void ev_idle_start (EV_P_ ev_idle *w); |
271 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
534 | void ev_idle_stop (EV_P_ ev_idle *w); |
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535 | # endif |
272 | |
536 | |
273 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
537 | void ev_prepare_start (EV_P_ ev_prepare *w); |
274 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
538 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
275 | |
539 | |
276 | void ev_check_start (EV_P_ struct ev_check *w); |
540 | void ev_check_start (EV_P_ ev_check *w); |
277 | void ev_check_stop (EV_P_ struct ev_check *w); |
541 | void ev_check_stop (EV_P_ ev_check *w); |
278 | |
542 | |
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543 | # if EV_FORK_ENABLE |
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544 | void ev_fork_start (EV_P_ ev_fork *w); |
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545 | void ev_fork_stop (EV_P_ ev_fork *w); |
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546 | # endif |
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547 | |
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548 | # if EV_EMBED_ENABLE |
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549 | /* only supported when loop to be embedded is in fact embeddable */ |
279 | void ev_child_start (EV_P_ struct ev_child *w); |
550 | void ev_embed_start (EV_P_ ev_embed *w); |
280 | void ev_child_stop (EV_P_ struct ev_child *w); |
551 | void ev_embed_stop (EV_P_ ev_embed *w); |
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552 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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553 | # endif |
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554 | |
281 | #endif |
555 | #endif |
282 | |
556 | |
283 | #ifdef __cplusplus |
557 | #ifdef __cplusplus |
284 | } |
558 | } |
285 | #endif |
559 | #endif |