1 | /* |
1 | /* |
2 | * libev native API header |
2 | * libev native API header |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
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42 | |
42 | |
43 | #ifdef __cplusplus |
43 | #ifdef __cplusplus |
44 | extern "C" { |
44 | extern "C" { |
45 | #endif |
45 | #endif |
46 | |
46 | |
47 | typedef double ev_tstamp; |
47 | /*****************************************************************************/ |
48 | |
48 | |
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49 | #ifndef EV_FEATURES |
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50 | # define EV_FEATURES 0x7f |
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51 | #endif |
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52 | |
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53 | #define EV_FEATURE_CODE ((EV_FEATURES) & 1) |
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54 | #define EV_FEATURE_DATA ((EV_FEATURES) & 2) |
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55 | #define EV_FEATURE_CONFIG ((EV_FEATURES) & 4) |
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56 | #define EV_FEATURE_API ((EV_FEATURES) & 8) |
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57 | #define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16) |
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58 | #define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32) |
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59 | #define EV_FEATURE_OS ((EV_FEATURES) & 64) |
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60 | |
49 | /* these priorities are inclusive, higher priorities will be called earlier */ |
61 | /* these priorities are inclusive, higher priorities will be invoked earlier */ |
50 | #ifndef EV_MINPRI |
62 | #ifndef EV_MINPRI |
51 | # define EV_MINPRI -2 |
63 | # define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0) |
52 | #endif |
64 | #endif |
53 | #ifndef EV_MAXPRI |
65 | #ifndef EV_MAXPRI |
54 | # define EV_MAXPRI +2 |
66 | # define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0) |
55 | #endif |
67 | #endif |
56 | |
68 | |
57 | #ifndef EV_MULTIPLICITY |
69 | #ifndef EV_MULTIPLICITY |
58 | # define EV_MULTIPLICITY 1 |
70 | # define EV_MULTIPLICITY EV_FEATURE_CONFIG |
59 | #endif |
71 | #endif |
60 | |
72 | |
61 | #ifndef EV_PERIODIC_ENABLE |
73 | #ifndef EV_PERIODIC_ENABLE |
62 | # define EV_PERIODIC_ENABLE 1 |
74 | # define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS |
63 | #endif |
75 | #endif |
64 | |
76 | |
65 | #ifndef EV_STAT_ENABLE |
77 | #ifndef EV_STAT_ENABLE |
66 | # define EV_STAT_ENABLE 1 |
78 | # define EV_STAT_ENABLE EV_FEATURE_WATCHERS |
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79 | #endif |
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80 | |
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81 | #ifndef EV_PREPARE_ENABLE |
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82 | # define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS |
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83 | #endif |
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84 | |
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85 | #ifndef EV_CHECK_ENABLE |
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86 | # define EV_CHECK_ENABLE EV_FEATURE_WATCHERS |
67 | #endif |
87 | #endif |
68 | |
88 | |
69 | #ifndef EV_IDLE_ENABLE |
89 | #ifndef EV_IDLE_ENABLE |
70 | # define EV_IDLE_ENABLE 1 |
90 | # define EV_IDLE_ENABLE EV_FEATURE_WATCHERS |
71 | #endif |
91 | #endif |
72 | |
92 | |
73 | #ifndef EV_FORK_ENABLE |
93 | #ifndef EV_FORK_ENABLE |
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94 | # define EV_FORK_ENABLE EV_FEATURE_WATCHERS |
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95 | #endif |
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96 | |
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97 | #ifndef EV_SIGNAL_ENABLE |
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98 | # define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS |
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99 | #endif |
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100 | |
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101 | #ifndef EV_CHILD_ENABLE |
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102 | # ifdef _WIN32 |
74 | # define EV_FORK_ENABLE 1 |
103 | # define EV_CHILD_ENABLE 0 |
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104 | # else |
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105 | # define EV_CHILD_ENABLE EV_FEATURE_WATCHERS |
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106 | #endif |
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107 | #endif |
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108 | |
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109 | #ifndef EV_ASYNC_ENABLE |
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110 | # define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS |
75 | #endif |
111 | #endif |
76 | |
112 | |
77 | #ifndef EV_EMBED_ENABLE |
113 | #ifndef EV_EMBED_ENABLE |
78 | # define EV_EMBED_ENABLE 1 |
114 | # define EV_EMBED_ENABLE EV_FEATURE_WATCHERS |
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 |
115 | #endif |
84 | |
116 | |
85 | #ifndef EV_WALK_ENABLE |
117 | #ifndef EV_WALK_ENABLE |
86 | # define EV_WALK_ENABLE 0 /* not yet */ |
118 | # define EV_WALK_ENABLE 0 /* not yet */ |
87 | #endif |
119 | #endif |
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120 | |
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121 | /*****************************************************************************/ |
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122 | |
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123 | #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE |
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124 | # undef EV_SIGNAL_ENABLE |
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125 | # define EV_SIGNAL_ENABLE 1 |
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126 | #endif |
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127 | |
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128 | /*****************************************************************************/ |
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129 | |
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130 | typedef double ev_tstamp; |
88 | |
131 | |
89 | #ifndef EV_ATOMIC_T |
132 | #ifndef EV_ATOMIC_T |
90 | # include <signal.h> |
133 | # include <signal.h> |
91 | # define EV_ATOMIC_T sig_atomic_t volatile |
134 | # define EV_ATOMIC_T sig_atomic_t volatile |
92 | #endif |
135 | #endif |
93 | |
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94 | /*****************************************************************************/ |
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95 | |
136 | |
96 | #if EV_STAT_ENABLE |
137 | #if EV_STAT_ENABLE |
97 | # ifdef _WIN32 |
138 | # ifdef _WIN32 |
98 | # include <time.h> |
139 | # include <time.h> |
99 | # include <sys/types.h> |
140 | # include <sys/types.h> |
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128 | # define EV_INLINE static inline |
169 | # define EV_INLINE static inline |
129 | #else |
170 | #else |
130 | # define EV_INLINE static |
171 | # define EV_INLINE static |
131 | #endif |
172 | #endif |
132 | |
173 | |
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174 | #ifndef EV_PROTOTYPES |
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175 | # define EV_PROTOTYPES 1 |
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176 | #endif |
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177 | |
133 | /*****************************************************************************/ |
178 | /*****************************************************************************/ |
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179 | |
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180 | #define EV_VERSION_MAJOR 4 |
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181 | #define EV_VERSION_MINOR 0 |
134 | |
182 | |
135 | /* eventmask, revents, events... */ |
183 | /* eventmask, revents, events... */ |
136 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
184 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
137 | #define EV_NONE 0x00 /* no events */ |
185 | #define EV_NONE 0x00 /* no events */ |
138 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
186 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
139 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
187 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
140 | #define EV__IOFDSET 0x80 /* internal use only */ |
188 | #define EV__IOFDSET 0x80 /* internal use only */ |
141 | #define EV_IO EV_READ /* alias for type-detection */ |
189 | #define EV_IO EV_READ /* alias for type-detection */ |
142 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
190 | #define EV_TIMER 0x00000100 /* timer timed out */ |
143 | #define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
191 | #define EV_TIMEOUT EV_TIMER /* pre 4.0 API compatibility */ |
144 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
192 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
145 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
193 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
146 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
194 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
147 | #define EV_STAT 0x00001000 /* stat data changed */ |
195 | #define EV_STAT 0x00001000 /* stat data changed */ |
148 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
196 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
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156 | |
204 | |
157 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
205 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
158 | #ifndef EV_COMMON |
206 | #ifndef EV_COMMON |
159 | # define EV_COMMON void *data; |
207 | # define EV_COMMON void *data; |
160 | #endif |
208 | #endif |
161 | #ifndef EV_PROTOTYPES |
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162 | # define EV_PROTOTYPES 1 |
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163 | #endif |
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164 | |
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165 | #define EV_VERSION_MAJOR 3 |
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166 | #define EV_VERSION_MINOR 9 |
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167 | |
209 | |
168 | #ifndef EV_CB_DECLARE |
210 | #ifndef EV_CB_DECLARE |
169 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
211 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
170 | #endif |
212 | #endif |
171 | #ifndef EV_CB_INVOKE |
213 | #ifndef EV_CB_INVOKE |
172 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
214 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
173 | #endif |
215 | #endif |
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216 | |
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217 | /* not official, do not use */ |
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218 | #define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents) |
174 | |
219 | |
175 | /* |
220 | /* |
176 | * struct member types: |
221 | * struct member types: |
177 | * private: you may look at them, but not change them, |
222 | * private: you may look at them, but not change them, |
178 | * and they might not mean anything to you. |
223 | * and they might not mean anything to you. |
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189 | * or the array index + 1 in the pendings array. |
234 | * or the array index + 1 in the pendings array. |
190 | */ |
235 | */ |
191 | |
236 | |
192 | #if EV_MINPRI == EV_MAXPRI |
237 | #if EV_MINPRI == EV_MAXPRI |
193 | # define EV_DECL_PRIORITY |
238 | # define EV_DECL_PRIORITY |
194 | #else |
239 | #elif !defined (EV_DECL_PRIORITY) |
195 | # define EV_DECL_PRIORITY int priority; |
240 | # define EV_DECL_PRIORITY int priority; |
196 | #endif |
241 | #endif |
197 | |
242 | |
198 | /* shared by all watchers */ |
243 | /* shared by all watchers */ |
199 | #define EV_WATCHER(type) \ |
244 | #define EV_WATCHER(type) \ |
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542 | * convenience function, wait for a single event, without registering an event watcher |
587 | * convenience function, wait for a single event, without registering an event watcher |
543 | * if timeout is < 0, do wait indefinitely |
588 | * if timeout is < 0, do wait indefinitely |
544 | */ |
589 | */ |
545 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
590 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
546 | |
591 | |
547 | # if EV_MINIMAL < 2 |
592 | # if EV_FEATURE_API |
548 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
593 | unsigned int ev_iteration (EV_P); /* number of loop iterations */ |
549 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
594 | unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
550 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
595 | void ev_verify (EV_P); /* abort if loop data corrupted */ |
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596 | |
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597 | /* pre 4.0 API compatibility */ |
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598 | # if EV_MULTIPLICITY |
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599 | # define ev_loop_count(l) ev_iteration (l) |
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600 | # define ev_loop_depth(l) ev_depth (l) |
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601 | # define ev_loop_verify(l) ev_verify (l) |
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602 | # endif |
551 | |
603 | |
552 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
604 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
553 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
605 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
554 | |
606 | |
555 | /* advanced stuff for threading etc. support, see docs */ |
607 | /* advanced stuff for threading etc. support, see docs */ |
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613 | #if EV_MINPRI == EV_MAXPRI |
665 | #if EV_MINPRI == EV_MAXPRI |
614 | # define ev_priority(ev) ((ev), EV_MINPRI) |
666 | # define ev_priority(ev) ((ev), EV_MINPRI) |
615 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
667 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
616 | #else |
668 | #else |
617 | # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
669 | # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
618 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
670 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
619 | #endif |
671 | #endif |
620 | |
672 | |
621 | #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
673 | #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
622 | |
674 | |
623 | #ifndef ev_set_cb |
675 | #ifndef ev_set_cb |
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630 | |
682 | |
631 | /* feeds an event into a watcher as if the event actually occured */ |
683 | /* feeds an event into a watcher as if the event actually occured */ |
632 | /* accepts any ev_watcher type */ |
684 | /* accepts any ev_watcher type */ |
633 | void ev_feed_event (EV_P_ void *w, int revents); |
685 | void ev_feed_event (EV_P_ void *w, int revents); |
634 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
686 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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687 | #if EV_SIGNAL_ENABLE |
635 | void ev_feed_signal_event (EV_P_ int signum); |
688 | void ev_feed_signal_event (EV_P_ int signum); |
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689 | #endif |
636 | void ev_invoke (EV_P_ void *w, int revents); |
690 | void ev_invoke (EV_P_ void *w, int revents); |
637 | int ev_clear_pending (EV_P_ void *w); |
691 | int ev_clear_pending (EV_P_ void *w); |
638 | |
692 | |
639 | void ev_io_start (EV_P_ ev_io *w); |
693 | void ev_io_start (EV_P_ ev_io *w); |
640 | void ev_io_stop (EV_P_ ev_io *w); |
694 | void ev_io_stop (EV_P_ ev_io *w); |
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651 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
705 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
652 | void ev_periodic_again (EV_P_ ev_periodic *w); |
706 | void ev_periodic_again (EV_P_ ev_periodic *w); |
653 | #endif |
707 | #endif |
654 | |
708 | |
655 | /* only supported in the default loop */ |
709 | /* only supported in the default loop */ |
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710 | #if EV_SIGNAL_ENABLE |
656 | void ev_signal_start (EV_P_ ev_signal *w); |
711 | void ev_signal_start (EV_P_ ev_signal *w); |
657 | void ev_signal_stop (EV_P_ ev_signal *w); |
712 | void ev_signal_stop (EV_P_ ev_signal *w); |
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713 | #endif |
658 | |
714 | |
659 | /* only supported in the default loop */ |
715 | /* only supported in the default loop */ |
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716 | # if EV_CHILD_ENABLE |
660 | void ev_child_start (EV_P_ ev_child *w); |
717 | void ev_child_start (EV_P_ ev_child *w); |
661 | void ev_child_stop (EV_P_ ev_child *w); |
718 | void ev_child_stop (EV_P_ ev_child *w); |
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719 | # endif |
662 | |
720 | |
663 | # if EV_STAT_ENABLE |
721 | # if EV_STAT_ENABLE |
664 | void ev_stat_start (EV_P_ ev_stat *w); |
722 | void ev_stat_start (EV_P_ ev_stat *w); |
665 | void ev_stat_stop (EV_P_ ev_stat *w); |
723 | void ev_stat_stop (EV_P_ ev_stat *w); |
666 | void ev_stat_stat (EV_P_ ev_stat *w); |
724 | void ev_stat_stat (EV_P_ ev_stat *w); |
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669 | # if EV_IDLE_ENABLE |
727 | # if EV_IDLE_ENABLE |
670 | void ev_idle_start (EV_P_ ev_idle *w); |
728 | void ev_idle_start (EV_P_ ev_idle *w); |
671 | void ev_idle_stop (EV_P_ ev_idle *w); |
729 | void ev_idle_stop (EV_P_ ev_idle *w); |
672 | # endif |
730 | # endif |
673 | |
731 | |
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732 | #if EV_PREPARE_ENABLE |
674 | void ev_prepare_start (EV_P_ ev_prepare *w); |
733 | void ev_prepare_start (EV_P_ ev_prepare *w); |
675 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
734 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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735 | #endif |
676 | |
736 | |
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737 | #if EV_CHECK_ENABLE |
677 | void ev_check_start (EV_P_ ev_check *w); |
738 | void ev_check_start (EV_P_ ev_check *w); |
678 | void ev_check_stop (EV_P_ ev_check *w); |
739 | void ev_check_stop (EV_P_ ev_check *w); |
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740 | #endif |
679 | |
741 | |
680 | # if EV_FORK_ENABLE |
742 | # if EV_FORK_ENABLE |
681 | void ev_fork_start (EV_P_ ev_fork *w); |
743 | void ev_fork_start (EV_P_ ev_fork *w); |
682 | void ev_fork_stop (EV_P_ ev_fork *w); |
744 | void ev_fork_stop (EV_P_ ev_fork *w); |
683 | # endif |
745 | # endif |