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__ |
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42 | |
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43 | #ifdef __cplusplus |
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44 | extern "C" { |
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45 | #endif |
32 | |
46 | |
33 | typedef double ev_tstamp; |
47 | typedef double ev_tstamp; |
34 | |
48 | |
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49 | /* these priorities are inclusive, higher priorities will be called earlier */ |
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50 | #ifndef EV_MINPRI |
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51 | # define EV_MINPRI -2 |
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52 | #endif |
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53 | #ifndef EV_MAXPRI |
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54 | # define EV_MAXPRI +2 |
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55 | #endif |
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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 | # include <sys/stat.h> |
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94 | #endif |
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95 | |
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96 | /* support multiple event loops? */ |
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97 | #if EV_MULTIPLICITY |
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98 | struct ev_loop; |
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99 | # define EV_P struct ev_loop *loop |
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100 | # define EV_P_ EV_P, |
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101 | # define EV_A loop |
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102 | # define EV_A_ EV_A, |
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103 | # define EV_DEFAULT_UC ev_default_loop_uc () |
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104 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
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105 | # define EV_DEFAULT ev_default_loop (0) |
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106 | # define EV_DEFAULT_ EV_DEFAULT, |
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107 | #else |
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108 | # define EV_P void |
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109 | # define EV_P_ |
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110 | # define EV_A |
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111 | # define EV_A_ |
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112 | # define EV_DEFAULT |
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113 | # define EV_DEFAULT_ |
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114 | # define EV_DEFAULT_UC |
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115 | # define EV_DEFAULT_UC_ |
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116 | # undef EV_EMBED_ENABLE |
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117 | #endif |
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118 | |
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119 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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120 | # define EV_INLINE static inline |
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121 | #else |
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122 | # define EV_INLINE static |
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123 | #endif |
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124 | |
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125 | /*****************************************************************************/ |
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126 | |
35 | /* eventmask, revents, events... */ |
127 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
128 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
129 | #define EV_NONE 0x00L /* no events */ |
38 | #define EV_READ 0x01 |
130 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
39 | #define EV_WRITE 0x02 |
131 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
40 | #define EV_TIMEOUT 0x04 |
132 | #define EV_IOFDSET 0x80L /* internal use only */ |
41 | #define EV_SIGNAL 0x08 |
133 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
42 | #define EV_IDLE 0x10 |
134 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
43 | #define EV_CHECK 0x20 |
135 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
44 | #define EV_ERROR (0x3f|0x80) |
136 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
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137 | #define EV_STAT 0x00001000L /* stat data changed */ |
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138 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
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139 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
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140 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
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141 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
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142 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
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143 | #define EV_ASYNC 0x00040000L /* async intra-loop signal */ |
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144 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
45 | |
145 | |
46 | /* can be used to add custom fields to all watchers */ |
146 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
47 | #ifndef EV_COMMON |
147 | #ifndef EV_COMMON |
48 | # define EV_COMMON void *data |
148 | # define EV_COMMON void *data; |
49 | #endif |
149 | #endif |
50 | #ifndef EV_PROTOTYPES |
150 | #ifndef EV_PROTOTYPES |
51 | # define EV_PROTOTYPES 1 |
151 | # define EV_PROTOTYPES 1 |
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152 | #endif |
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153 | |
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154 | #define EV_VERSION_MAJOR 3 |
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155 | #define EV_VERSION_MINOR 0 |
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156 | |
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157 | #ifndef EV_CB_DECLARE |
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158 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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159 | #endif |
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160 | #ifndef EV_CB_INVOKE |
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161 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
52 | #endif |
162 | #endif |
53 | |
163 | |
54 | /* |
164 | /* |
55 | * struct member types: |
165 | * struct member types: |
56 | * private: you can look at them, but not change them, and they might not mean anything to you. |
166 | * private: you can look at them, but not change them, and they might not mean anything to you. |
… | |
… | |
60 | |
170 | |
61 | /* shared by all watchers */ |
171 | /* shared by all watchers */ |
62 | #define EV_WATCHER(type) \ |
172 | #define EV_WATCHER(type) \ |
63 | int active; /* private */ \ |
173 | int active; /* private */ \ |
64 | int pending; /* private */ \ |
174 | int pending; /* private */ \ |
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175 | int priority; /* private */ \ |
65 | EV_COMMON; /* rw */ \ |
176 | EV_COMMON /* rw */ \ |
66 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
177 | EV_CB_DECLARE (type) /* private */ |
67 | |
178 | |
68 | #define EV_WATCHER_LIST(type) \ |
179 | #define EV_WATCHER_LIST(type) \ |
69 | EV_WATCHER (type); \ |
180 | EV_WATCHER (type) \ |
70 | struct type *next /* private */ |
181 | struct ev_watcher_list *next; /* private */ |
71 | |
182 | |
72 | #define EV_WATCHER_TIME(type) \ |
183 | #define EV_WATCHER_TIME(type) \ |
73 | EV_WATCHER (type); \ |
184 | EV_WATCHER (type) \ |
74 | ev_tstamp at /* private */ |
185 | ev_tstamp at; /* private */ |
75 | |
186 | |
76 | /* base class, nothing to see here unless you subclass */ |
187 | /* base class, nothing to see here unless you subclass */ |
77 | struct ev_watcher { |
188 | typedef struct ev_watcher |
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189 | { |
78 | EV_WATCHER (ev_watcher); |
190 | EV_WATCHER (ev_watcher) |
79 | }; |
191 | } ev_watcher; |
80 | |
192 | |
81 | /* base class, nothing to see here unless you subclass */ |
193 | /* base class, nothing to see here unless you subclass */ |
82 | struct ev_watcher_list { |
194 | typedef struct ev_watcher_list |
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195 | { |
83 | EV_WATCHER_LIST (ev_watcher_list); |
196 | EV_WATCHER_LIST (ev_watcher_list) |
84 | }; |
197 | } ev_watcher_list; |
85 | |
198 | |
86 | /* base class, nothing to see here unless you subclass */ |
199 | /* base class, nothing to see here unless you subclass */ |
87 | struct ev_watcher_time { |
200 | typedef struct ev_watcher_time |
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201 | { |
88 | EV_WATCHER_TIME (ev_watcher_time); |
202 | EV_WATCHER_TIME (ev_watcher_time) |
89 | }; |
203 | } ev_watcher_time; |
90 | |
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91 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
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92 | struct ev_timer |
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93 | { |
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94 | EV_WATCHER_TIME (ev_timer); |
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95 | |
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96 | ev_tstamp repeat; /* rw */ |
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97 | }; |
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98 | |
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99 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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100 | struct ev_periodic |
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101 | { |
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102 | EV_WATCHER_TIME (ev_periodic); |
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103 | |
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104 | ev_tstamp interval; /* rw */ |
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105 | }; |
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106 | |
204 | |
107 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
205 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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206 | /* revent EV_READ, EV_WRITE */ |
108 | struct ev_io |
207 | typedef struct ev_io |
109 | { |
208 | { |
110 | EV_WATCHER_LIST (ev_io); |
209 | EV_WATCHER_LIST (ev_io) |
111 | |
210 | |
112 | int fd; /* ro */ |
211 | int fd; /* ro */ |
113 | int events; /* ro */ |
212 | int events; /* ro */ |
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213 | } ev_io; |
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214 | |
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215 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
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216 | /* revent EV_TIMEOUT */ |
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217 | typedef struct ev_timer |
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218 | { |
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219 | EV_WATCHER_TIME (ev_timer) |
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220 | |
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221 | ev_tstamp repeat; /* rw */ |
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222 | } ev_timer; |
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223 | |
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224 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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225 | /* revent EV_PERIODIC */ |
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226 | typedef struct ev_periodic |
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227 | { |
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228 | EV_WATCHER_TIME (ev_periodic) |
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229 | |
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230 | ev_tstamp offset; /* rw */ |
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231 | ev_tstamp interval; /* rw */ |
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232 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
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233 | } ev_periodic; |
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234 | |
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235 | /* invoked when the given signal has been received */ |
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236 | /* revent EV_SIGNAL */ |
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237 | typedef struct ev_signal |
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238 | { |
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239 | EV_WATCHER_LIST (ev_signal) |
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240 | |
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241 | int signum; /* ro */ |
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242 | } ev_signal; |
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243 | |
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244 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
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245 | /* revent EV_CHILD */ |
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246 | /* does not support priorities */ |
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247 | typedef struct ev_child |
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248 | { |
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249 | EV_WATCHER_LIST (ev_child) |
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250 | |
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251 | int flags; /* private */ |
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252 | int pid; /* ro */ |
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253 | int rpid; /* rw, holds the received pid */ |
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254 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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255 | } ev_child; |
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256 | |
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257 | #if EV_STAT_ENABLE |
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258 | /* st_nlink = 0 means missing file or other error */ |
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259 | # ifdef _WIN32 |
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260 | typedef struct _stati64 ev_statdata; |
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261 | # else |
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262 | typedef struct stat ev_statdata; |
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263 | # endif |
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264 | |
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265 | /* invoked each time the stat data changes for a given path */ |
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266 | /* revent EV_STAT */ |
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267 | typedef struct ev_stat |
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268 | { |
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269 | EV_WATCHER_LIST (ev_stat) |
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270 | |
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271 | ev_timer timer; /* private */ |
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272 | ev_tstamp interval; /* ro */ |
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273 | const char *path; /* ro */ |
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274 | ev_statdata prev; /* ro */ |
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275 | ev_statdata attr; /* ro */ |
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276 | |
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277 | int wd; /* wd for inotify, fd for kqueue */ |
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278 | } ev_stat; |
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279 | #endif |
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280 | |
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281 | #if EV_IDLE_ENABLE |
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282 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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283 | /* revent EV_IDLE */ |
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284 | typedef struct ev_idle |
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285 | { |
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286 | EV_WATCHER (ev_idle) |
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287 | } ev_idle; |
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288 | #endif |
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289 | |
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290 | /* invoked for each run of the mainloop, just before the blocking call */ |
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291 | /* you can still change events in any way you like */ |
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292 | /* revent EV_PREPARE */ |
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293 | typedef struct ev_prepare |
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294 | { |
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295 | EV_WATCHER (ev_prepare) |
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296 | } ev_prepare; |
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297 | |
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298 | /* invoked for each run of the mainloop, just after the blocking call */ |
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299 | /* revent EV_CHECK */ |
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300 | typedef struct ev_check |
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301 | { |
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302 | EV_WATCHER (ev_check) |
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303 | } ev_check; |
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304 | |
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305 | #if EV_FORK_ENABLE |
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306 | /* the callback gets invoked before check in the child process when a fork was detected */ |
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307 | typedef struct ev_fork |
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308 | { |
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309 | EV_WATCHER (ev_fork) |
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310 | } ev_fork; |
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311 | #endif |
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312 | |
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313 | #if EV_EMBED_ENABLE |
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314 | /* used to embed an event loop inside another */ |
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315 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
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316 | typedef struct ev_embed |
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317 | { |
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318 | EV_WATCHER (ev_embed) |
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319 | |
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320 | struct ev_loop *other; /* ro */ |
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321 | ev_io io; /* private */ |
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322 | ev_prepare prepare; /* private */ |
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323 | ev_check check; /* unused */ |
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324 | ev_timer timer; /* unused */ |
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325 | ev_periodic periodic; /* unused */ |
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326 | ev_idle idle; /* unused */ |
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327 | ev_fork fork; /* unused */ |
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328 | } ev_embed; |
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329 | #endif |
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330 | |
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331 | #if EV_ASYNC_ENABLE |
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332 | /* invoked when somebody calls ev_async_send on the watcher */ |
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333 | /* revent EV_ASYNC */ |
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334 | typedef struct ev_async |
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335 | { |
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336 | EV_WATCHER (ev_async) |
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337 | |
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338 | EV_ATOMIC_T sent; /* private */ |
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339 | } ev_async; |
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340 | |
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341 | # define ev_async_pending(w) ((w)->sent + 0) |
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342 | #endif |
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343 | |
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344 | /* the presence of this union forces similar struct layout */ |
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345 | union ev_any_watcher |
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346 | { |
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347 | struct ev_watcher w; |
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348 | struct ev_watcher_list wl; |
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349 | |
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350 | struct ev_io io; |
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351 | struct ev_timer timer; |
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352 | struct ev_periodic periodic; |
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353 | struct ev_signal signal; |
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354 | struct ev_child child; |
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355 | #if EV_STAT_ENABLE |
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356 | struct ev_stat stat; |
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357 | #endif |
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358 | #if EV_IDLE_ENABLE |
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359 | struct ev_idle idle; |
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360 | #endif |
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361 | struct ev_prepare prepare; |
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362 | struct ev_check check; |
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363 | #if EV_FORK_ENABLE |
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364 | struct ev_fork fork; |
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365 | #endif |
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366 | #if EV_EMBED_ENABLE |
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367 | struct ev_embed embed; |
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368 | #endif |
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369 | #if EV_ASYNC_ENABLE |
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370 | struct ev_async async; |
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371 | #endif |
114 | }; |
372 | }; |
115 | |
373 | |
116 | /* invoked when the given signal has been received */ |
374 | /* bits for ev_default_loop and ev_loop_new */ |
117 | struct ev_signal |
375 | /* the default */ |
118 | { |
376 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
119 | EV_WATCHER_LIST (ev_signal); |
377 | /* flag bits */ |
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378 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
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379 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
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380 | /* method bits to be ored together */ |
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381 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
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382 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
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383 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
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384 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
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385 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
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386 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
120 | |
387 | |
121 | int signum; /* ro */ |
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122 | }; |
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123 | |
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124 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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125 | struct ev_idle |
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126 | { |
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127 | EV_WATCHER (ev_idle); |
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128 | }; |
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129 | |
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130 | /* invoked for each run of the mainloop, just before the next blocking vall is initiated */ |
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131 | struct ev_check |
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132 | { |
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133 | EV_WATCHER (ev_check); |
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134 | }; |
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135 | |
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136 | #define EVMETHOD_NONE 0 |
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137 | #define EVMETHOD_SELECT 1 |
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138 | #define EVMETHOD_EPOLL 2 |
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139 | #if EV_PROTOTYPES |
388 | #if EV_PROTOTYPES |
140 | extern int ev_method; |
389 | int ev_version_major (void); |
141 | int ev_init (int flags); /* returns ev_method */ |
390 | int ev_version_minor (void); |
142 | |
391 | |
143 | /* these three calls are suitable for plugging into pthread_atfork */ |
392 | unsigned int ev_supported_backends (void); |
144 | void ev_prefork (void); |
393 | unsigned int ev_recommended_backends (void); |
145 | void ev_postfork_parent (void); |
394 | unsigned int ev_embeddable_backends (void); |
146 | void ev_postfork_child (void); |
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147 | |
395 | |
148 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
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149 | ev_tstamp ev_time (void); |
396 | ev_tstamp ev_time (void); |
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397 | void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
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398 | |
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399 | /* Sets the allocation function to use, works like realloc. |
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400 | * It is used to allocate and free memory. |
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401 | * If it returns zero when memory needs to be allocated, the library might abort |
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402 | * or take some potentially destructive action. |
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403 | * The default is your system realloc function. |
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404 | */ |
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405 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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406 | |
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407 | /* set the callback function to call on a |
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408 | * retryable syscall error |
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409 | * (such as failed select, poll, epoll_wait) |
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410 | */ |
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411 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
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412 | |
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413 | # if EV_MULTIPLICITY |
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414 | EV_INLINE struct ev_loop * |
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415 | ev_default_loop_uc (void) |
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416 | { |
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417 | extern struct ev_loop *ev_default_loop_ptr; |
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418 | |
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419 | return ev_default_loop_ptr; |
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420 | } |
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421 | |
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422 | /* the default loop is the only one that handles signals and child watchers */ |
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423 | /* you can call this as often as you like */ |
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424 | EV_INLINE struct ev_loop * |
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425 | ev_default_loop (unsigned int flags) |
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426 | { |
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427 | struct ev_loop *loop = ev_default_loop_uc (); |
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428 | |
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429 | if (!loop) |
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430 | { |
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431 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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432 | |
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433 | loop = ev_default_loop_init (flags); |
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434 | } |
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435 | |
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436 | return loop; |
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437 | } |
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438 | |
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439 | /* create and destroy alternative loops that don't handle signals */ |
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440 | struct ev_loop *ev_loop_new (unsigned int flags); |
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441 | void ev_loop_destroy (EV_P); |
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442 | void ev_loop_fork (EV_P); |
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443 | |
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444 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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445 | |
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446 | # else |
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447 | |
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448 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
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449 | |
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450 | EV_INLINE ev_tstamp |
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451 | ev_now (void) |
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452 | { |
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453 | extern ev_tstamp ev_rt_now; |
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454 | |
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455 | return ev_rt_now; |
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456 | } |
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457 | # endif |
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458 | |
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459 | EV_INLINE int |
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460 | ev_is_default_loop (EV_P) |
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461 | { |
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462 | #if EV_MULTIPLICITY |
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463 | extern struct ev_loop *ev_default_loop_ptr; |
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464 | |
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465 | return !!(EV_A == ev_default_loop_ptr); |
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466 | #else |
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467 | return 1; |
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468 | #endif |
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469 | } |
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470 | |
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471 | void ev_default_destroy (void); /* destroy the default loop */ |
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472 | /* this needs to be called after fork, to duplicate the default loop */ |
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473 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
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474 | /* you can call it in either the parent or the child */ |
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475 | /* you can actually call it at any time, anywhere :) */ |
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476 | void ev_default_fork (void); |
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477 | |
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478 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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479 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
150 | #endif |
480 | #endif |
151 | |
481 | |
152 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
482 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
153 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
483 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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484 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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485 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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486 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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487 | |
154 | #if EV_PROTOTYPES |
488 | #if EV_PROTOTYPES |
155 | void ev_loop (int flags); |
489 | void ev_loop (EV_P_ int flags); |
156 | extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
490 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
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491 | |
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492 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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493 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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494 | |
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495 | /* |
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496 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
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497 | * keeps one reference. if you have a long-runing watcher you never unregister that |
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498 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
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499 | */ |
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500 | void ev_ref (EV_P); |
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501 | void ev_unref (EV_P); |
157 | |
502 | |
158 | /* convinience function, wait for a single event, without registering an event watcher */ |
503 | /* convinience function, wait for a single event, without registering an event watcher */ |
159 | /* if timeout is < 0, do wait indefinitely */ |
504 | /* if timeout is < 0, do wait indefinitely */ |
160 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
505 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
161 | #endif |
506 | #endif |
162 | |
507 | |
163 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
508 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
164 | /* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ |
509 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
165 | #define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
510 | #define ev_init(ev,cb_) do { \ |
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511 | ((ev_watcher *)(void *)(ev))->active = \ |
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512 | ((ev_watcher *)(void *)(ev))->pending = \ |
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513 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
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514 | ev_set_cb ((ev), cb_); \ |
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515 | } while (0) |
166 | |
516 | |
167 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
517 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
168 | #define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
518 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
169 | #define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
519 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
170 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
520 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
171 | #define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ |
521 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
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522 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
172 | #define evidle_set(ev) /* nop, yes, this is a serious in-joke */ |
523 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
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524 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
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525 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
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526 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
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527 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
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528 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
173 | |
529 | |
174 | #define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) |
530 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
175 | #define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) |
531 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
176 | #define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) |
532 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
177 | #define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) |
533 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
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534 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
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535 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
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536 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
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537 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
178 | #define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) |
538 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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539 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
179 | #define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) |
540 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
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541 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
180 | |
542 | |
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543 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
181 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
544 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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545 | |
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546 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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547 | #define ev_cb(ev) (ev)->cb /* rw */ |
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548 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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549 | |
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550 | #ifndef ev_set_cb |
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551 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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552 | #endif |
182 | |
553 | |
183 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
554 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
184 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
555 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
185 | #if EV_PROTOTYPES |
556 | #if EV_PROTOTYPES |
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557 | |
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558 | /* feeds an event into a watcher as if the event actually occured */ |
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559 | /* accepts any ev_watcher type */ |
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560 | void ev_feed_event (EV_P_ void *w, int revents); |
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561 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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562 | void ev_feed_signal_event (EV_P_ int signum); |
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563 | void ev_invoke (EV_P_ void *w, int revents); |
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564 | int ev_clear_pending (EV_P_ void *w); |
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565 | |
186 | void evio_start (struct ev_io *w); |
566 | void ev_io_start (EV_P_ ev_io *w); |
187 | void evio_stop (struct ev_io *w); |
567 | void ev_io_stop (EV_P_ ev_io *w); |
188 | |
568 | |
189 | void evtimer_start (struct ev_timer *w); |
569 | void ev_timer_start (EV_P_ ev_timer *w); |
190 | void evtimer_stop (struct ev_timer *w); |
570 | void ev_timer_stop (EV_P_ ev_timer *w); |
191 | void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
571 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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572 | void ev_timer_again (EV_P_ ev_timer *w); |
192 | |
573 | |
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574 | #if EV_PERIODIC_ENABLE |
193 | void evperiodic_start (struct ev_periodic *w); |
575 | void ev_periodic_start (EV_P_ ev_periodic *w); |
194 | void evperiodic_stop (struct ev_periodic *w); |
576 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
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577 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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578 | #endif |
195 | |
579 | |
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580 | /* only supported in the default loop */ |
196 | void evsignal_start (struct ev_signal *w); |
581 | void ev_signal_start (EV_P_ ev_signal *w); |
197 | void evsignal_stop (struct ev_signal *w); |
582 | void ev_signal_stop (EV_P_ ev_signal *w); |
198 | |
583 | |
199 | void evidle_start (struct ev_idle *w); |
584 | /* only supported in the default loop */ |
200 | void evidle_stop (struct ev_idle *w); |
585 | void ev_child_start (EV_P_ ev_child *w); |
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586 | void ev_child_stop (EV_P_ ev_child *w); |
201 | |
587 | |
202 | void evcheck_start (struct ev_check *w); |
588 | # if EV_STAT_ENABLE |
203 | void evcheck_stop (struct ev_check *w); |
589 | void ev_stat_start (EV_P_ ev_stat *w); |
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590 | void ev_stat_stop (EV_P_ ev_stat *w); |
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591 | void ev_stat_stat (EV_P_ ev_stat *w); |
204 | #endif |
592 | # endif |
205 | |
593 | |
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594 | # if EV_IDLE_ENABLE |
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595 | void ev_idle_start (EV_P_ ev_idle *w); |
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596 | void ev_idle_stop (EV_P_ ev_idle *w); |
206 | #endif |
597 | # endif |
207 | |
598 | |
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599 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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600 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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601 | |
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602 | void ev_check_start (EV_P_ ev_check *w); |
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603 | void ev_check_stop (EV_P_ ev_check *w); |
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604 | |
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605 | # if EV_FORK_ENABLE |
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606 | void ev_fork_start (EV_P_ ev_fork *w); |
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607 | void ev_fork_stop (EV_P_ ev_fork *w); |
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608 | # endif |
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609 | |
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610 | # if EV_EMBED_ENABLE |
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611 | /* only supported when loop to be embedded is in fact embeddable */ |
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612 | void ev_embed_start (EV_P_ ev_embed *w); |
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613 | void ev_embed_stop (EV_P_ ev_embed *w); |
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614 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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615 | # endif |
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616 | |
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617 | # if EV_ASYNC_ENABLE |
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618 | void ev_async_start (EV_P_ ev_async *w); |
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619 | void ev_async_stop (EV_P_ ev_async *w); |
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620 | void ev_async_send (EV_P_ ev_async *w); |
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621 | # endif |
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622 | |
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623 | #endif |
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624 | |
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625 | #ifdef __cplusplus |
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|
626 | } |
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|
627 | #endif |
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628 | |
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629 | #endif |
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630 | |