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 | |
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 | #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 | # ifdef _WIN32 |
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94 | # include <time.h> |
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95 | # include <sys/types.h> |
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96 | # include <stdio.h> |
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97 | # endif |
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98 | # include <sys/stat.h> |
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99 | #endif |
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100 | |
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101 | /* support multiple event loops? */ |
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102 | #if EV_MULTIPLICITY |
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103 | struct ev_loop; |
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104 | # define EV_P struct ev_loop *loop |
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105 | # define EV_P_ EV_P, |
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106 | # define EV_A loop |
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107 | # define EV_A_ EV_A, |
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108 | # define EV_DEFAULT_UC ev_default_loop_uc () |
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109 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
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110 | # define EV_DEFAULT ev_default_loop (0) |
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111 | # define EV_DEFAULT_ EV_DEFAULT, |
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112 | #else |
47 | #define EV_P void |
113 | # define EV_P void |
48 | #define EV_P_ |
114 | # define EV_P_ |
49 | #define EV_A |
115 | # define EV_A |
50 | #define EV_A_ |
116 | # define EV_A_ |
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117 | # define EV_DEFAULT |
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118 | # define EV_DEFAULT_ |
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119 | # define EV_DEFAULT_UC |
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120 | # define EV_DEFAULT_UC_ |
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121 | # undef EV_EMBED_ENABLE |
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122 | #endif |
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123 | |
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124 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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125 | # define EV_INLINE static inline |
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126 | #else |
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127 | # define EV_INLINE static |
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128 | #endif |
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129 | |
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130 | /*****************************************************************************/ |
51 | |
131 | |
52 | /* eventmask, revents, events... */ |
132 | /* eventmask, revents, events... */ |
53 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
133 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
54 | #define EV_NONE 0x00 |
134 | #define EV_NONE 0x00 /* no events */ |
55 | #define EV_READ 0x01 |
135 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
56 | #define EV_WRITE 0x02 |
136 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
57 | #define EV_TIMEOUT 0x000100 |
137 | #define EV_IOFDSET 0x80 /* internal use only */ |
58 | #define EV_PERIODIC 0x000200 |
138 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
59 | #define EV_SIGNAL 0x000400 |
139 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
60 | #define EV_IDLE 0x000800 |
140 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
61 | #define EV_CHECK 0x001000 |
141 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
62 | #define EV_PREPARE 0x002000 |
142 | #define EV_STAT 0x00001000 /* stat data changed */ |
63 | #define EV_CHILD 0x004000 |
143 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
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144 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
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145 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
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146 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
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147 | #define EV_FORK 0x00020000 /* event loop resumed in child */ |
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148 | #define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
64 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
149 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
65 | |
150 | |
66 | /* can be used to add custom fields to all watchers */ |
151 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
67 | #ifndef EV_COMMON |
152 | #ifndef EV_COMMON |
68 | # define EV_COMMON void *data |
153 | # define EV_COMMON void *data; |
69 | #endif |
154 | #endif |
70 | #ifndef EV_PROTOTYPES |
155 | #ifndef EV_PROTOTYPES |
71 | # define EV_PROTOTYPES 1 |
156 | # define EV_PROTOTYPES 1 |
72 | #endif |
157 | #endif |
73 | |
158 | |
74 | #define EV_VERSION_MAJOR 1 |
159 | #define EV_VERSION_MAJOR 3 |
75 | #define EV_VERSION_MINOR 1 |
160 | #define EV_VERSION_MINOR 0 |
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161 | |
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162 | #ifndef EV_CB_DECLARE |
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163 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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164 | #endif |
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165 | #ifndef EV_CB_INVOKE |
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166 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
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167 | #endif |
76 | |
168 | |
77 | /* |
169 | /* |
78 | * struct member types: |
170 | * struct member types: |
79 | * private: you can look at them, but not change them, and they might not mean anything to you. |
171 | * 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 |
172 | * ro: can be read anytime, but only changed when the watcher isn't active |
81 | * rw: can be read and modified anytime, even when the watcher is active |
173 | * rw: can be read and modified anytime, even when the watcher is active |
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174 | * |
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175 | * some internal details that might be helpful for debugging: |
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176 | * |
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177 | * active is either 0, which means the watcher is not active, |
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178 | * or the array index of the watcher (periodics, timers) |
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179 | * or the array index + 1 (most other watchers) |
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180 | * or simply 1 for watchers that aren't in some array. |
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181 | * pending is either 0, in which case the watcher isn't, |
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182 | * or the array index + 1 in the pendings array. |
82 | */ |
183 | */ |
83 | |
184 | |
84 | /* shared by all watchers */ |
185 | /* shared by all watchers */ |
85 | #define EV_WATCHER(type) \ |
186 | #define EV_WATCHER(type) \ |
86 | int active; /* private */ \ |
187 | int active; /* private */ \ |
87 | int pending; /* private */ \ |
188 | int pending; /* private */ \ |
88 | int priority; /* ro */ \ |
189 | int priority; /* private */ \ |
89 | EV_COMMON; /* rw */ \ |
190 | EV_COMMON /* rw */ \ |
90 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
191 | EV_CB_DECLARE (type) /* private */ |
91 | |
192 | |
92 | #define EV_WATCHER_LIST(type) \ |
193 | #define EV_WATCHER_LIST(type) \ |
93 | EV_WATCHER (type); \ |
194 | EV_WATCHER (type) \ |
94 | struct ev_watcher_list *next /* private */ |
195 | struct ev_watcher_list *next; /* private */ |
95 | |
196 | |
96 | #define EV_WATCHER_TIME(type) \ |
197 | #define EV_WATCHER_TIME(type) \ |
97 | EV_WATCHER (type); \ |
198 | EV_WATCHER (type) \ |
98 | ev_tstamp at /* private */ |
199 | ev_tstamp at; /* private */ |
99 | |
200 | |
100 | /* base class, nothing to see here unless you subclass */ |
201 | /* base class, nothing to see here unless you subclass */ |
101 | struct ev_watcher { |
202 | typedef struct ev_watcher |
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203 | { |
102 | EV_WATCHER (ev_watcher); |
204 | EV_WATCHER (ev_watcher) |
103 | }; |
205 | } ev_watcher; |
104 | |
206 | |
105 | /* base class, nothing to see here unless you subclass */ |
207 | /* base class, nothing to see here unless you subclass */ |
106 | struct ev_watcher_list { |
208 | typedef struct ev_watcher_list |
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209 | { |
107 | EV_WATCHER_LIST (ev_watcher_list); |
210 | EV_WATCHER_LIST (ev_watcher_list) |
108 | }; |
211 | } ev_watcher_list; |
109 | |
212 | |
110 | /* base class, nothing to see here unless you subclass */ |
213 | /* base class, nothing to see here unless you subclass */ |
111 | struct ev_watcher_time { |
214 | typedef struct ev_watcher_time |
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215 | { |
112 | EV_WATCHER_TIME (ev_watcher_time); |
216 | EV_WATCHER_TIME (ev_watcher_time) |
113 | }; |
217 | } ev_watcher_time; |
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218 | |
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219 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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220 | /* revent EV_READ, EV_WRITE */ |
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221 | typedef struct ev_io |
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222 | { |
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223 | EV_WATCHER_LIST (ev_io) |
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224 | |
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225 | int fd; /* ro */ |
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226 | int events; /* ro */ |
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227 | } ev_io; |
114 | |
228 | |
115 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
229 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
116 | /* revent EV_TIMEOUT */ |
230 | /* revent EV_TIMEOUT */ |
117 | struct ev_timer |
231 | typedef struct ev_timer |
118 | { |
232 | { |
119 | EV_WATCHER_TIME (ev_timer); |
233 | EV_WATCHER_TIME (ev_timer) |
120 | |
234 | |
121 | ev_tstamp repeat; /* rw */ |
235 | ev_tstamp repeat; /* rw */ |
122 | }; |
236 | } ev_timer; |
123 | |
237 | |
124 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
238 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
125 | /* revent EV_PERIODIC */ |
239 | /* revent EV_PERIODIC */ |
126 | struct ev_periodic |
240 | typedef struct ev_periodic |
127 | { |
241 | { |
128 | EV_WATCHER_TIME (ev_periodic); |
242 | EV_WATCHER_TIME (ev_periodic) |
129 | |
243 | |
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244 | ev_tstamp offset; /* rw */ |
130 | ev_tstamp interval; /* rw */ |
245 | ev_tstamp interval; /* rw */ |
131 | }; |
246 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
132 | |
247 | } 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 | |
248 | |
143 | /* invoked when the given signal has been received */ |
249 | /* invoked when the given signal has been received */ |
144 | /* revent EV_SIGNAL */ |
250 | /* revent EV_SIGNAL */ |
145 | struct ev_signal |
251 | typedef struct ev_signal |
146 | { |
252 | { |
147 | EV_WATCHER_LIST (ev_signal); |
253 | EV_WATCHER_LIST (ev_signal) |
148 | |
254 | |
149 | int signum; /* ro */ |
255 | int signum; /* ro */ |
150 | }; |
256 | } ev_signal; |
151 | |
257 | |
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258 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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259 | /* revent EV_CHILD */ |
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260 | /* does not support priorities */ |
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261 | typedef struct ev_child |
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262 | { |
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263 | EV_WATCHER_LIST (ev_child) |
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264 | |
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265 | int flags; /* private */ |
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266 | int pid; /* ro */ |
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267 | int rpid; /* rw, holds the received pid */ |
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268 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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269 | } ev_child; |
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270 | |
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271 | #if EV_STAT_ENABLE |
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272 | /* st_nlink = 0 means missing file or other error */ |
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273 | # ifdef _WIN32 |
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274 | typedef struct _stati64 ev_statdata; |
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275 | # else |
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276 | typedef struct stat ev_statdata; |
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277 | # endif |
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278 | |
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279 | /* invoked each time the stat data changes for a given path */ |
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280 | /* revent EV_STAT */ |
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281 | typedef struct ev_stat |
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282 | { |
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283 | EV_WATCHER_LIST (ev_stat) |
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284 | |
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285 | ev_timer timer; /* private */ |
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286 | ev_tstamp interval; /* ro */ |
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287 | const char *path; /* ro */ |
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288 | ev_statdata prev; /* ro */ |
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289 | ev_statdata attr; /* ro */ |
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290 | |
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291 | int wd; /* wd for inotify, fd for kqueue */ |
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292 | } ev_stat; |
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293 | #endif |
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294 | |
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295 | #if EV_IDLE_ENABLE |
152 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
296 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
153 | /* revent EV_IDLE */ |
297 | /* revent EV_IDLE */ |
154 | struct ev_idle |
298 | typedef struct ev_idle |
155 | { |
299 | { |
156 | EV_WATCHER (ev_idle); |
300 | EV_WATCHER (ev_idle) |
157 | }; |
301 | } ev_idle; |
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302 | #endif |
158 | |
303 | |
159 | /* invoked for each run of the mainloop, just before the blocking call */ |
304 | /* invoked for each run of the mainloop, just before the blocking call */ |
160 | /* you can still change events in any way you like */ |
305 | /* you can still change events in any way you like */ |
161 | /* revent EV_PREPARE */ |
306 | /* revent EV_PREPARE */ |
162 | struct ev_prepare |
307 | typedef struct ev_prepare |
163 | { |
308 | { |
164 | EV_WATCHER (ev_prepare); |
309 | EV_WATCHER (ev_prepare) |
165 | }; |
310 | } ev_prepare; |
166 | |
311 | |
167 | /* invoked for each run of the mainloop, just after the blocking call */ |
312 | /* invoked for each run of the mainloop, just after the blocking call */ |
168 | /* revent EV_CHECK */ |
313 | /* revent EV_CHECK */ |
169 | struct ev_check |
314 | typedef struct ev_check |
170 | { |
315 | { |
171 | EV_WATCHER (ev_check); |
316 | EV_WATCHER (ev_check) |
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317 | } ev_check; |
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318 | |
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319 | #if EV_FORK_ENABLE |
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320 | /* the callback gets invoked before check in the child process when a fork was detected */ |
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321 | typedef struct ev_fork |
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322 | { |
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323 | EV_WATCHER (ev_fork) |
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324 | } ev_fork; |
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325 | #endif |
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326 | |
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327 | #if EV_EMBED_ENABLE |
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328 | /* used to embed an event loop inside another */ |
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329 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
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330 | typedef struct ev_embed |
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331 | { |
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332 | EV_WATCHER (ev_embed) |
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333 | |
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334 | struct ev_loop *other; /* ro */ |
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335 | ev_io io; /* private */ |
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336 | ev_prepare prepare; /* private */ |
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337 | ev_check check; /* unused */ |
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338 | ev_timer timer; /* unused */ |
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339 | ev_periodic periodic; /* unused */ |
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340 | ev_idle idle; /* unused */ |
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341 | ev_fork fork; /* unused */ |
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342 | } ev_embed; |
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343 | #endif |
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344 | |
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345 | #if EV_ASYNC_ENABLE |
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346 | /* invoked when somebody calls ev_async_send on the watcher */ |
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347 | /* revent EV_ASYNC */ |
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348 | typedef struct ev_async |
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349 | { |
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350 | EV_WATCHER (ev_async) |
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351 | |
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352 | EV_ATOMIC_T sent; /* private */ |
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353 | } ev_async; |
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354 | |
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355 | # define ev_async_pending(w) ((w)->sent + 0) |
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356 | #endif |
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357 | |
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358 | /* the presence of this union forces similar struct layout */ |
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359 | union ev_any_watcher |
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360 | { |
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361 | struct ev_watcher w; |
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362 | struct ev_watcher_list wl; |
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363 | |
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364 | struct ev_io io; |
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365 | struct ev_timer timer; |
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366 | struct ev_periodic periodic; |
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367 | struct ev_signal signal; |
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368 | struct ev_child child; |
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369 | #if EV_STAT_ENABLE |
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370 | struct ev_stat stat; |
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371 | #endif |
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372 | #if EV_IDLE_ENABLE |
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373 | struct ev_idle idle; |
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374 | #endif |
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375 | struct ev_prepare prepare; |
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376 | struct ev_check check; |
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377 | #if EV_FORK_ENABLE |
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378 | struct ev_fork fork; |
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379 | #endif |
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380 | #if EV_EMBED_ENABLE |
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381 | struct ev_embed embed; |
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382 | #endif |
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383 | #if EV_ASYNC_ENABLE |
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384 | struct ev_async async; |
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385 | #endif |
172 | }; |
386 | }; |
173 | |
387 | |
174 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
388 | /* bits for ev_default_loop and ev_loop_new */ |
175 | /* revent EV_CHILD */ |
389 | /* the default */ |
176 | /* does not support priorities */ |
390 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
177 | struct ev_child |
391 | /* flag bits */ |
178 | { |
392 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
179 | EV_WATCHER_LIST (ev_child); |
393 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
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394 | /* method bits to be ored together */ |
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395 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
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396 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
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397 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
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398 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
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399 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
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400 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
180 | |
401 | |
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 |
402 | #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); |
403 | int ev_version_major (void); |
198 | int ev_version_minor (void); |
404 | int ev_version_minor (void); |
199 | |
405 | |
200 | /* these three calls are suitable for plugging into pthread_atfork */ |
406 | unsigned int ev_supported_backends (void); |
201 | void ev_fork_prepare (void); |
407 | unsigned int ev_recommended_backends (void); |
202 | void ev_fork_parent (void); |
408 | unsigned int ev_embeddable_backends (void); |
203 | void ev_fork_child (void); |
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204 | |
409 | |
205 | ev_tstamp ev_time (void); |
410 | ev_tstamp ev_time (void); |
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411 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
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412 | |
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413 | /* Sets the allocation function to use, works like realloc. |
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414 | * It is used to allocate and free memory. |
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415 | * If it returns zero when memory needs to be allocated, the library might abort |
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416 | * or take some potentially destructive action. |
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417 | * The default is your system realloc function. |
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418 | */ |
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419 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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420 | |
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421 | /* set the callback function to call on a |
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422 | * retryable syscall error |
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423 | * (such as failed select, poll, epoll_wait) |
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424 | */ |
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425 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
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426 | |
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427 | #if EV_MULTIPLICITY |
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428 | EV_INLINE struct ev_loop * |
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429 | ev_default_loop_uc (void) |
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430 | { |
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431 | extern struct ev_loop *ev_default_loop_ptr; |
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432 | |
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433 | return ev_default_loop_ptr; |
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434 | } |
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435 | |
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436 | /* the default loop is the only one that handles signals and child watchers */ |
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437 | /* you can call this as often as you like */ |
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438 | EV_INLINE struct ev_loop * |
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439 | ev_default_loop (unsigned int flags) |
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440 | { |
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441 | struct ev_loop *loop = ev_default_loop_uc (); |
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442 | |
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443 | if (!loop) |
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444 | { |
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445 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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446 | |
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447 | loop = ev_default_loop_init (flags); |
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448 | } |
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449 | |
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450 | return loop; |
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451 | } |
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452 | |
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453 | /* create and destroy alternative loops that don't handle signals */ |
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454 | struct ev_loop *ev_loop_new (unsigned int flags); |
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455 | void ev_loop_destroy (EV_P); |
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456 | void ev_loop_fork (EV_P); |
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457 | void ev_loop_verify (EV_P); |
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458 | |
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459 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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460 | |
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461 | #else |
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462 | |
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463 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
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464 | |
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465 | EV_INLINE ev_tstamp |
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466 | ev_now (void) |
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467 | { |
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468 | extern ev_tstamp ev_rt_now; |
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469 | |
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470 | return ev_rt_now; |
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471 | } |
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472 | #endif /* multiplicity */ |
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473 | |
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474 | EV_INLINE int |
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475 | ev_is_default_loop (EV_P) |
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476 | { |
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477 | #if EV_MULTIPLICITY |
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478 | extern struct ev_loop *ev_default_loop_ptr; |
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479 | |
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480 | return !!(EV_A == ev_default_loop_ptr); |
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481 | #else |
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482 | return 1; |
206 | #endif |
483 | #endif |
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484 | } |
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485 | |
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486 | void ev_default_destroy (void); /* destroy the default loop */ |
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487 | /* this needs to be called after fork, to duplicate the default loop */ |
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488 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
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489 | /* you can call it in either the parent or the child */ |
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490 | /* you can actually call it at any time, anywhere :) */ |
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491 | void ev_default_fork (void); |
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492 | |
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493 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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494 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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495 | #endif /* prototypes */ |
207 | |
496 | |
208 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
497 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
209 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
498 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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499 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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500 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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501 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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502 | |
210 | #if EV_PROTOTYPES |
503 | #if EV_PROTOTYPES |
211 | void ev_loop (EV_P_ int flags); |
504 | 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 */ |
505 | 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 | |
506 | |
214 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
507 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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508 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
215 | |
509 | |
216 | /* |
510 | /* |
217 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
511 | * 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 |
512 | * 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. |
513 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
… | |
… | |
225 | /* if timeout is < 0, do wait indefinitely */ |
519 | /* 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); |
520 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
227 | #endif |
521 | #endif |
228 | |
522 | |
229 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
523 | /* 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 */ |
524 | /* 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) |
525 | #define ev_init(ev,cb_) do { \ |
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526 | ((ev_watcher *)(void *)(ev))->active = \ |
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527 | ((ev_watcher *)(void *)(ev))->pending = \ |
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528 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
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529 | ev_set_cb ((ev), cb_); \ |
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530 | } while (0) |
232 | |
531 | |
233 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
532 | #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) |
533 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(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) |
534 | #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) |
535 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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536 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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537 | #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 */ |
538 | #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 */ |
539 | #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 */ |
540 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
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541 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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542 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
240 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
543 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
241 | |
544 | |
242 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
545 | #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) |
546 | #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) |
547 | #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) |
548 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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549 | #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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550 | #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) |
551 | #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) |
552 | #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) |
553 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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554 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
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555 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
249 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
556 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
250 | |
557 | |
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558 | #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 */ |
559 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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560 | |
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561 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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562 | #define ev_cb(ev) (ev)->cb /* rw */ |
252 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
563 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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564 | |
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565 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
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566 | |
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567 | #ifndef ev_set_cb |
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568 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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569 | #endif |
253 | |
570 | |
254 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
571 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
255 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
572 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
256 | #if EV_PROTOTYPES |
573 | #if EV_PROTOTYPES |
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574 | |
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575 | /* feeds an event into a watcher as if the event actually occured */ |
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576 | /* accepts any ev_watcher type */ |
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577 | void ev_feed_event (EV_P_ void *w, int revents); |
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578 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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579 | void ev_feed_signal_event (EV_P_ int signum); |
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580 | void ev_invoke (EV_P_ void *w, int revents); |
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581 | int ev_clear_pending (EV_P_ void *w); |
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582 | |
257 | void ev_io_start (EV_P_ struct ev_io *w); |
583 | void ev_io_start (EV_P_ ev_io *w); |
258 | void ev_io_stop (EV_P_ struct ev_io *w); |
584 | void ev_io_stop (EV_P_ ev_io *w); |
259 | |
585 | |
260 | void ev_timer_start (EV_P_ struct ev_timer *w); |
586 | void ev_timer_start (EV_P_ ev_timer *w); |
261 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
587 | 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 */ |
588 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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589 | void ev_timer_again (EV_P_ ev_timer *w); |
263 | |
590 | |
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|
591 | #if EV_PERIODIC_ENABLE |
264 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
592 | void ev_periodic_start (EV_P_ ev_periodic *w); |
265 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
593 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
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594 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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595 | #endif |
266 | |
596 | |
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597 | /* only supported in the default loop */ |
267 | void ev_signal_start (EV_P_ struct ev_signal *w); |
598 | void ev_signal_start (EV_P_ ev_signal *w); |
268 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
599 | void ev_signal_stop (EV_P_ ev_signal *w); |
269 | |
600 | |
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601 | /* only supported in the default loop */ |
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602 | void ev_child_start (EV_P_ ev_child *w); |
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|
603 | void ev_child_stop (EV_P_ ev_child *w); |
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604 | |
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605 | # if EV_STAT_ENABLE |
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606 | void ev_stat_start (EV_P_ ev_stat *w); |
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607 | void ev_stat_stop (EV_P_ ev_stat *w); |
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608 | void ev_stat_stat (EV_P_ ev_stat *w); |
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609 | # endif |
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610 | |
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611 | # if EV_IDLE_ENABLE |
270 | void ev_idle_start (EV_P_ struct ev_idle *w); |
612 | void ev_idle_start (EV_P_ ev_idle *w); |
271 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
613 | void ev_idle_stop (EV_P_ ev_idle *w); |
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614 | # endif |
272 | |
615 | |
273 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
616 | void ev_prepare_start (EV_P_ ev_prepare *w); |
274 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
617 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
275 | |
618 | |
276 | void ev_check_start (EV_P_ struct ev_check *w); |
619 | void ev_check_start (EV_P_ ev_check *w); |
277 | void ev_check_stop (EV_P_ struct ev_check *w); |
620 | void ev_check_stop (EV_P_ ev_check *w); |
278 | |
621 | |
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622 | # if EV_FORK_ENABLE |
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623 | void ev_fork_start (EV_P_ ev_fork *w); |
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624 | void ev_fork_stop (EV_P_ ev_fork *w); |
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625 | # endif |
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626 | |
|
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627 | # if EV_EMBED_ENABLE |
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|
628 | /* only supported when loop to be embedded is in fact embeddable */ |
279 | void ev_child_start (EV_P_ struct ev_child *w); |
629 | void ev_embed_start (EV_P_ ev_embed *w); |
280 | void ev_child_stop (EV_P_ struct ev_child *w); |
630 | void ev_embed_stop (EV_P_ ev_embed *w); |
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|
631 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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|
632 | # endif |
|
|
633 | |
|
|
634 | # if EV_ASYNC_ENABLE |
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|
635 | void ev_async_start (EV_P_ ev_async *w); |
|
|
636 | void ev_async_stop (EV_P_ ev_async *w); |
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|
637 | void ev_async_send (EV_P_ ev_async *w); |
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|
638 | # endif |
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|
639 | |
281 | #endif |
640 | #endif |
282 | |
641 | |
283 | #ifdef __cplusplus |
642 | #ifdef __cplusplus |
284 | } |
643 | } |
285 | #endif |
644 | #endif |