1 | /* |
1 | /* |
2 | * libev native API header |
2 | * libev native API header |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 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 | * |
… | |
… | |
76 | |
76 | |
77 | #ifndef EV_EMBED_ENABLE |
77 | #ifndef EV_EMBED_ENABLE |
78 | # define EV_EMBED_ENABLE 1 |
78 | # define EV_EMBED_ENABLE 1 |
79 | #endif |
79 | #endif |
80 | |
80 | |
|
|
81 | #ifndef EV_ASYNC_ENABLE |
|
|
82 | # define EV_ASYNC_ENABLE 1 |
|
|
83 | #endif |
|
|
84 | |
|
|
85 | #ifndef EV_ATOMIC_T |
|
|
86 | # include <signal.h> |
|
|
87 | # define EV_ATOMIC_T sig_atomic_t volatile |
|
|
88 | #endif |
|
|
89 | |
81 | /*****************************************************************************/ |
90 | /*****************************************************************************/ |
82 | |
91 | |
83 | #if EV_STAT_ENABLE |
92 | #if EV_STAT_ENABLE |
84 | # include <sys/stat.h> |
93 | # include <sys/stat.h> |
85 | #endif |
94 | #endif |
… | |
… | |
89 | struct ev_loop; |
98 | struct ev_loop; |
90 | # define EV_P struct ev_loop *loop |
99 | # define EV_P struct ev_loop *loop |
91 | # define EV_P_ EV_P, |
100 | # define EV_P_ EV_P, |
92 | # define EV_A loop |
101 | # define EV_A loop |
93 | # define EV_A_ EV_A, |
102 | # define EV_A_ EV_A, |
|
|
103 | # define EV_DEFAULT_UC ev_default_loop_uc () |
|
|
104 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
94 | # define EV_DEFAULT ev_default_loop (0) |
105 | # define EV_DEFAULT ev_default_loop (0) |
95 | # define EV_DEFAULT_ EV_DEFAULT, |
106 | # define EV_DEFAULT_ EV_DEFAULT, |
96 | #else |
107 | #else |
97 | # define EV_P void |
108 | # define EV_P void |
98 | # define EV_P_ |
109 | # define EV_P_ |
99 | # define EV_A |
110 | # define EV_A |
100 | # define EV_A_ |
111 | # define EV_A_ |
101 | # define EV_DEFAULT |
112 | # define EV_DEFAULT |
102 | # define EV_DEFAULT_ |
113 | # define EV_DEFAULT_ |
103 | |
114 | # define EV_DEFAULT_UC |
|
|
115 | # define EV_DEFAULT_UC_ |
104 | # undef EV_EMBED_ENABLE |
116 | # undef EV_EMBED_ENABLE |
105 | #endif |
117 | #endif |
|
|
118 | |
|
|
119 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
|
|
120 | # define EV_INLINE static inline |
|
|
121 | #else |
|
|
122 | # define EV_INLINE static |
|
|
123 | #endif |
|
|
124 | |
|
|
125 | /*****************************************************************************/ |
106 | |
126 | |
107 | /* eventmask, revents, events... */ |
127 | /* eventmask, revents, events... */ |
108 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
128 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
109 | #define EV_NONE 0x00L /* no events */ |
129 | #define EV_NONE 0x00L /* no events */ |
110 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
130 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
… | |
… | |
118 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
138 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
119 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
139 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
120 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
140 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
121 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
141 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
122 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
142 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
|
|
143 | #define EV_ASYNC 0x00040000L /* async intra-loop signal */ |
123 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
144 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
124 | |
145 | |
125 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
146 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
126 | #ifndef EV_COMMON |
147 | #ifndef EV_COMMON |
127 | # define EV_COMMON void *data; |
148 | # define EV_COMMON void *data; |
128 | #endif |
149 | #endif |
129 | #ifndef EV_PROTOTYPES |
150 | #ifndef EV_PROTOTYPES |
130 | # define EV_PROTOTYPES 1 |
151 | # define EV_PROTOTYPES 1 |
131 | #endif |
152 | #endif |
132 | |
153 | |
133 | #define EV_VERSION_MAJOR 2 |
154 | #define EV_VERSION_MAJOR 3 |
134 | #define EV_VERSION_MINOR 0 |
155 | #define EV_VERSION_MINOR 0 |
135 | |
156 | |
136 | #ifndef EV_CB_DECLARE |
157 | #ifndef EV_CB_DECLARE |
137 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
158 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
138 | #endif |
159 | #endif |
… | |
… | |
225 | /* does not support priorities */ |
246 | /* does not support priorities */ |
226 | typedef struct ev_child |
247 | typedef struct ev_child |
227 | { |
248 | { |
228 | EV_WATCHER_LIST (ev_child) |
249 | EV_WATCHER_LIST (ev_child) |
229 | |
250 | |
|
|
251 | int flags; /* private */ |
230 | int pid; /* ro */ |
252 | int pid; /* ro */ |
231 | int rpid; /* rw, holds the received pid */ |
253 | int rpid; /* rw, holds the received pid */ |
232 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
254 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
233 | } ev_child; |
255 | } ev_child; |
234 | |
256 | |
… | |
… | |
304 | ev_idle idle; /* unused */ |
326 | ev_idle idle; /* unused */ |
305 | ev_fork fork; /* unused */ |
327 | ev_fork fork; /* unused */ |
306 | } ev_embed; |
328 | } ev_embed; |
307 | #endif |
329 | #endif |
308 | |
330 | |
|
|
331 | #if EV_ASYNC_ENABLE |
|
|
332 | /* invoked when somebody calls ev_async_send on the watcher */ |
|
|
333 | /* revent EV_ASYNC */ |
|
|
334 | typedef struct ev_async |
|
|
335 | { |
|
|
336 | EV_WATCHER (ev_async) |
|
|
337 | |
|
|
338 | EV_ATOMIC_T sent; /* private */ |
|
|
339 | } ev_async; |
|
|
340 | |
|
|
341 | # define ev_async_pending(w) (((w)->sent + 0) |
|
|
342 | #endif |
|
|
343 | |
309 | /* the presence of this union forces similar struct layout */ |
344 | /* the presence of this union forces similar struct layout */ |
310 | union ev_any_watcher |
345 | union ev_any_watcher |
311 | { |
346 | { |
312 | struct ev_watcher w; |
347 | struct ev_watcher w; |
313 | struct ev_watcher_list wl; |
348 | struct ev_watcher_list wl; |
… | |
… | |
328 | #if EV_FORK_ENABLE |
363 | #if EV_FORK_ENABLE |
329 | struct ev_fork fork; |
364 | struct ev_fork fork; |
330 | #endif |
365 | #endif |
331 | #if EV_EMBED_ENABLE |
366 | #if EV_EMBED_ENABLE |
332 | struct ev_embed embed; |
367 | struct ev_embed embed; |
|
|
368 | #endif |
|
|
369 | #if EV_ASYND_ENABLE |
|
|
370 | struct ev_async async; |
333 | #endif |
371 | #endif |
334 | }; |
372 | }; |
335 | |
373 | |
336 | /* bits for ev_default_loop and ev_loop_new */ |
374 | /* bits for ev_default_loop and ev_loop_new */ |
337 | /* the default */ |
375 | /* the default */ |
… | |
… | |
371 | * (such as failed select, poll, epoll_wait) |
409 | * (such as failed select, poll, epoll_wait) |
372 | */ |
410 | */ |
373 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
411 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
374 | |
412 | |
375 | # if EV_MULTIPLICITY |
413 | # if EV_MULTIPLICITY |
|
|
414 | EV_INLINE struct ev_loop * |
|
|
415 | ev_default_loop_uc (void) |
|
|
416 | { |
|
|
417 | extern struct ev_loop *ev_default_loop_ptr; |
|
|
418 | |
|
|
419 | return ev_default_loop_ptr; |
|
|
420 | } |
|
|
421 | |
376 | /* the default loop is the only one that handles signals and child watchers */ |
422 | /* the default loop is the only one that handles signals and child watchers */ |
377 | /* you can call this as often as you like */ |
423 | /* you can call this as often as you like */ |
378 | static struct ev_loop * |
424 | EV_INLINE struct ev_loop * |
379 | ev_default_loop (unsigned int flags) |
425 | ev_default_loop (unsigned int flags) |
380 | { |
426 | { |
381 | extern struct ev_loop *ev_default_loop_ptr; |
427 | struct ev_loop *loop = ev_default_loop_uc (); |
|
|
428 | |
|
|
429 | if (!loop) |
|
|
430 | { |
382 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
431 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
383 | |
432 | |
384 | if (!ev_default_loop_ptr) |
|
|
385 | ev_default_loop_init (flags); |
433 | loop = ev_default_loop_init (flags); |
|
|
434 | } |
386 | |
435 | |
387 | return ev_default_loop_ptr; |
436 | return loop; |
388 | } |
437 | } |
389 | |
438 | |
390 | /* create and destroy alternative loops that don't handle signals */ |
439 | /* create and destroy alternative loops that don't handle signals */ |
391 | struct ev_loop *ev_loop_new (unsigned int flags); |
440 | struct ev_loop *ev_loop_new (unsigned int flags); |
392 | void ev_loop_destroy (EV_P); |
441 | void ev_loop_destroy (EV_P); |
… | |
… | |
396 | |
445 | |
397 | # else |
446 | # else |
398 | |
447 | |
399 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
448 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
400 | |
449 | |
401 | static ev_tstamp |
450 | EV_INLINE ev_tstamp |
402 | ev_now (void) |
451 | ev_now (void) |
403 | { |
452 | { |
404 | extern ev_tstamp ev_rt_now; |
453 | extern ev_tstamp ev_rt_now; |
405 | |
454 | |
406 | return ev_rt_now; |
455 | return ev_rt_now; |
407 | } |
456 | } |
408 | # endif |
457 | # endif |
|
|
458 | |
|
|
459 | EV_INLINE int |
|
|
460 | ev_is_default_loop (EV_P) |
|
|
461 | { |
|
|
462 | #if EV_MULTIPLICITY |
|
|
463 | extern struct ev_loop *ev_default_loop_ptr; |
|
|
464 | |
|
|
465 | return !!(EV_A == ev_default_loop_ptr); |
|
|
466 | #else |
|
|
467 | return 1; |
|
|
468 | #endif |
|
|
469 | } |
409 | |
470 | |
410 | void ev_default_destroy (void); /* destroy the default loop */ |
471 | void ev_default_destroy (void); /* destroy the default loop */ |
411 | /* this needs to be called after fork, to duplicate the default loop */ |
472 | /* this needs to be called after fork, to duplicate the default loop */ |
412 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
473 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
413 | /* you can call it in either the parent or the child */ |
474 | /* you can call it in either the parent or the child */ |
… | |
… | |
455 | |
516 | |
456 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
517 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
457 | #define ev_timer_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) |
458 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
519 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
459 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
520 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
460 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
521 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
461 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
522 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
462 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
523 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
463 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
524 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
464 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
525 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
465 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
526 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
466 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
527 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
|
|
528 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
467 | |
529 | |
468 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_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) |
469 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_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) |
470 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } 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) |
471 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_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) |
472 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
534 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
473 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
535 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
474 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
536 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
475 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
537 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
476 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
538 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
477 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
539 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
478 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
540 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
|
|
541 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
479 | |
542 | |
480 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
543 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
481 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, 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 */ |
482 | |
545 | |
483 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
546 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
… | |
… | |
549 | void ev_embed_start (EV_P_ ev_embed *w); |
612 | void ev_embed_start (EV_P_ ev_embed *w); |
550 | void ev_embed_stop (EV_P_ ev_embed *w); |
613 | void ev_embed_stop (EV_P_ ev_embed *w); |
551 | void ev_embed_sweep (EV_P_ ev_embed *w); |
614 | void ev_embed_sweep (EV_P_ ev_embed *w); |
552 | # endif |
615 | # endif |
553 | |
616 | |
|
|
617 | # if EV_ASYNC_ENABLE |
|
|
618 | void ev_async_start (EV_P_ ev_async *w); |
|
|
619 | void ev_async_stop (EV_P_ ev_async *w); |
|
|
620 | void ev_async_send (EV_P_ ev_async *w); |
|
|
621 | # endif |
|
|
622 | |
554 | #endif |
623 | #endif |
555 | |
624 | |
556 | #ifdef __cplusplus |
625 | #ifdef __cplusplus |
557 | } |
626 | } |
558 | #endif |
627 | #endif |