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Comparing libev/ev.h (file contents):
Revision 1.91 by root, Fri Jan 25 15:45:09 2008 UTC vs.
Revision 1.98 by root, Tue Apr 15 04:34:07 2008 UTC

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
… …
89struct ev_loop; 98struct 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;
… …
305 ev_idle idle; /* unused */ 326 ev_idle idle; /* unused */
306 ev_fork fork; /* unused */ 327 ev_fork fork; /* unused */
307} ev_embed; 328} ev_embed;
308#endif 329#endif
309 330
331#if EV_ASYNC_ENABLE
332/* invoked when somebody calls ev_async_send on the watcher */
333/* revent EV_ASYNC */
334typedef 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
310/* the presence of this union forces similar struct layout */ 344/* the presence of this union forces similar struct layout */
311union ev_any_watcher 345union ev_any_watcher
312{ 346{
313 struct ev_watcher w; 347 struct ev_watcher w;
314 struct ev_watcher_list wl; 348 struct ev_watcher_list wl;
… …
329#if EV_FORK_ENABLE 363#if EV_FORK_ENABLE
330 struct ev_fork fork; 364 struct ev_fork fork;
331#endif 365#endif
332#if EV_EMBED_ENABLE 366#if EV_EMBED_ENABLE
333 struct ev_embed embed; 367 struct ev_embed embed;
368#endif
369#if EV_ASYNC_ENABLE
370 struct ev_async async;
334#endif 371#endif
335}; 372};
336 373
337/* bits for ev_default_loop and ev_loop_new */ 374/* bits for ev_default_loop and ev_loop_new */
338/* the default */ 375/* the default */
… …
372 * (such as failed select, poll, epoll_wait) 409 * (such as failed select, poll, epoll_wait)
373 */ 410 */
374void ev_set_syserr_cb (void (*cb)(const char *msg)); 411void ev_set_syserr_cb (void (*cb)(const char *msg));
375 412
376# if EV_MULTIPLICITY 413# if EV_MULTIPLICITY
414EV_INLINE struct ev_loop *
415ev_default_loop_uc (void)
416{
417 extern struct ev_loop *ev_default_loop_ptr;
418
419 return ev_default_loop_ptr;
420}
421
377/* 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 */
378/* you can call this as often as you like */ 423/* you can call this as often as you like */
379static struct ev_loop * 424EV_INLINE struct ev_loop *
380ev_default_loop (unsigned int flags) 425ev_default_loop (unsigned int flags)
381{ 426{
382 extern struct ev_loop *ev_default_loop_ptr; 427 struct ev_loop *loop = ev_default_loop_uc ();
428
429 if (!loop)
430 {
383 extern struct ev_loop *ev_default_loop_init (unsigned int flags); 431 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
384 432
385 if (!ev_default_loop_ptr)
386 ev_default_loop_init (flags); 433 loop = ev_default_loop_init (flags);
434 }
387 435
388 return ev_default_loop_ptr; 436 return loop;
389} 437}
390 438
391/* create and destroy alternative loops that don't handle signals */ 439/* create and destroy alternative loops that don't handle signals */
392struct ev_loop *ev_loop_new (unsigned int flags); 440struct ev_loop *ev_loop_new (unsigned int flags);
393void ev_loop_destroy (EV_P); 441void ev_loop_destroy (EV_P);
… …
397 445
398# else 446# else
399 447
400int ev_default_loop (unsigned int flags); /* returns true when successful */ 448int ev_default_loop (unsigned int flags); /* returns true when successful */
401 449
402static ev_tstamp 450EV_INLINE ev_tstamp
403ev_now (void) 451ev_now (void)
404{ 452{
405 extern ev_tstamp ev_rt_now; 453 extern ev_tstamp ev_rt_now;
406 454
407 return ev_rt_now; 455 return ev_rt_now;
408} 456}
409# endif 457# endif
458
459EV_INLINE int
460ev_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}
410 470
411void ev_default_destroy (void); /* destroy the default loop */ 471void ev_default_destroy (void); /* destroy the default loop */
412/* 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 */
413/* 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 */
414/* you can call it in either the parent or the child */ 474/* you can call it in either the parent or the child */
… …
463#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 */
464#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 */
465#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 */
466#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)
467#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)
468 529
469#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)
470#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)
471#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)
472#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)
… …
475#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)
476#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)
477#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)
478#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)
479#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)
480 542
481#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 */
482#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 */
483 545
484#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) 546#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
… …
550void ev_embed_start (EV_P_ ev_embed *w); 612void ev_embed_start (EV_P_ ev_embed *w);
551void ev_embed_stop (EV_P_ ev_embed *w); 613void ev_embed_stop (EV_P_ ev_embed *w);
552void ev_embed_sweep (EV_P_ ev_embed *w); 614void ev_embed_sweep (EV_P_ ev_embed *w);
553# endif 615# endif
554 616
617# if EV_ASYNC_ENABLE
618void ev_async_start (EV_P_ ev_async *w);
619void ev_async_stop (EV_P_ ev_async *w);
620void ev_async_send (EV_P_ ev_async *w);
621# endif
622
555#endif 623#endif
556 624
557#ifdef __cplusplus 625#ifdef __cplusplus
558} 626}
559#endif 627#endif

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