1 | /* |
1 | /* |
2 | * libev native API header |
2 | * libev native API header |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 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 | * |
… | |
… | |
88 | #endif |
88 | #endif |
89 | |
89 | |
90 | /*****************************************************************************/ |
90 | /*****************************************************************************/ |
91 | |
91 | |
92 | #if EV_STAT_ENABLE |
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 | # endif |
93 | # include <sys/stat.h> |
97 | # include <sys/stat.h> |
94 | #endif |
98 | #endif |
95 | |
99 | |
96 | /* support multiple event loops? */ |
100 | /* support multiple event loops? */ |
97 | #if EV_MULTIPLICITY |
101 | #if EV_MULTIPLICITY |
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161 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
165 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
162 | #endif |
166 | #endif |
163 | |
167 | |
164 | /* |
168 | /* |
165 | * struct member types: |
169 | * struct member types: |
166 | * private: you can look at them, but not change them, and they might not mean anything to you. |
170 | * private: you may look at them, but not change them, |
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171 | * and they might not mean anything to you. |
167 | * 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. |
168 | * 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. |
169 | * |
174 | * |
170 | * some internal details that might be helpful for debugging: |
175 | * some internal details that might be helpful for debugging: |
171 | * |
176 | * |
172 | * active is either 0, which means the watcher is not active, |
177 | * active is either 0, which means the watcher is not active, |
173 | * or the array index of the watcher (periodics, timers) |
178 | * or the array index of the watcher (periodics, timers) |
174 | * or the array index + 1 (most other watchers) |
179 | * or the array index + 1 (most other watchers) |
175 | * or simply 1 for watchers that aren't in some array. |
180 | * or simply 1 for watchers that aren't in some array. |
176 | * pending is either 0, in which case the watcher isn't, |
181 | * pending is either 0, in which case the watcher isn't, |
177 | * or the array index + 1 in the pendings array. |
182 | * or the array index + 1 in the pendings array. |
178 | */ |
183 | */ |
179 | |
184 | |
180 | /* shared by all watchers */ |
185 | /* shared by all watchers */ |
181 | #define EV_WATCHER(type) \ |
186 | #define EV_WATCHER(type) \ |
182 | int active; /* private */ \ |
187 | int active; /* private */ \ |
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331 | ev_prepare prepare; /* private */ |
336 | ev_prepare prepare; /* private */ |
332 | ev_check check; /* unused */ |
337 | ev_check check; /* unused */ |
333 | ev_timer timer; /* unused */ |
338 | ev_timer timer; /* unused */ |
334 | ev_periodic periodic; /* unused */ |
339 | ev_periodic periodic; /* unused */ |
335 | ev_idle idle; /* unused */ |
340 | ev_idle idle; /* unused */ |
336 | ev_fork fork; /* unused */ |
341 | ev_fork fork; /* private */ |
337 | } ev_embed; |
342 | } ev_embed; |
338 | #endif |
343 | #endif |
339 | |
344 | |
340 | #if EV_ASYNC_ENABLE |
345 | #if EV_ASYNC_ENABLE |
341 | /* invoked when somebody calls ev_async_send on the watcher */ |
346 | /* invoked when somebody calls ev_async_send on the watcher */ |
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417 | * retryable syscall error |
422 | * retryable syscall error |
418 | * (such as failed select, poll, epoll_wait) |
423 | * (such as failed select, poll, epoll_wait) |
419 | */ |
424 | */ |
420 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
425 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
421 | |
426 | |
422 | # if EV_MULTIPLICITY |
427 | #if EV_MULTIPLICITY |
423 | EV_INLINE struct ev_loop * |
428 | EV_INLINE struct ev_loop * |
424 | ev_default_loop_uc (void) |
429 | ev_default_loop_uc (void) |
425 | { |
430 | { |
426 | extern struct ev_loop *ev_default_loop_ptr; |
431 | extern struct ev_loop *ev_default_loop_ptr; |
427 | |
432 | |
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447 | |
452 | |
448 | /* create and destroy alternative loops that don't handle signals */ |
453 | /* create and destroy alternative loops that don't handle signals */ |
449 | struct ev_loop *ev_loop_new (unsigned int flags); |
454 | struct ev_loop *ev_loop_new (unsigned int flags); |
450 | void ev_loop_destroy (EV_P); |
455 | void ev_loop_destroy (EV_P); |
451 | void ev_loop_fork (EV_P); |
456 | void ev_loop_fork (EV_P); |
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457 | void ev_loop_verify (EV_P); |
452 | |
458 | |
453 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
459 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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460 | void ev_now_update (EV_P); |
454 | |
461 | |
455 | # else |
462 | #else |
456 | |
463 | |
457 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
464 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
458 | |
465 | |
459 | EV_INLINE ev_tstamp |
466 | EV_INLINE ev_tstamp |
460 | ev_now (void) |
467 | ev_now (void) |
461 | { |
468 | { |
462 | extern ev_tstamp ev_rt_now; |
469 | extern ev_tstamp ev_rt_now; |
463 | |
470 | |
464 | return ev_rt_now; |
471 | return ev_rt_now; |
465 | } |
472 | } |
466 | # endif |
473 | #endif /* multiplicity */ |
467 | |
474 | |
468 | EV_INLINE int |
475 | EV_INLINE int |
469 | ev_is_default_loop (EV_P) |
476 | ev_is_default_loop (EV_P) |
470 | { |
477 | { |
471 | #if EV_MULTIPLICITY |
478 | #if EV_MULTIPLICITY |
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… | |
484 | /* you can actually call it at any time, anywhere :) */ |
491 | /* you can actually call it at any time, anywhere :) */ |
485 | void ev_default_fork (void); |
492 | void ev_default_fork (void); |
486 | |
493 | |
487 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
494 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
488 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
495 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
489 | #endif |
496 | #endif /* prototypes */ |
490 | |
497 | |
491 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
498 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
492 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
499 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
493 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
500 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
494 | #define EVUNLOOP_ONE 1 /* unloop once */ |
501 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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507 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
514 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
508 | */ |
515 | */ |
509 | void ev_ref (EV_P); |
516 | void ev_ref (EV_P); |
510 | void ev_unref (EV_P); |
517 | void ev_unref (EV_P); |
511 | |
518 | |
512 | /* convinience function, wait for a single event, without registering an event watcher */ |
519 | /* convenience function, wait for a single event, without registering an event watcher */ |
513 | /* if timeout is < 0, do wait indefinitely */ |
520 | /* if timeout is < 0, do wait indefinitely */ |
514 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
521 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
515 | #endif |
522 | #endif |
516 | |
523 | |
517 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
524 | /* these may evaluate ev multiple times, and the other arguments at most once */ |