[ViewVC] Diff of: cvs/libev/ev.h

Comparing libev/ev.h (file contents):
Revision 1.14 by root, Wed Oct 31 20:46:44 2007 UTC vs.
Revision 1.102 by root, Thu May 22 02:44:57 2008 UTC

1	/*	1	/*
		2	* libev native API header
		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	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		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
20	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	38	*/
29		39
30	#ifndef EV_H	40	#ifndef EV_H__
31	#define EV_H	41	#define EV_H__
		42
		43	#ifdef __cplusplus
		44	extern "C" {
		45	#endif
32		46
33	typedef double ev_tstamp;	47	typedef double ev_tstamp;
34		48
		49	/* these priorities are inclusive, higher priorities will be called earlier */
		50	#ifndef EV_MINPRI
		51	# define EV_MINPRI -2
		52	#endif
		53	#ifndef EV_MAXPRI
		54	# define EV_MAXPRI +2
		55	#endif
		56
		57	#ifndef EV_MULTIPLICITY
		58	# define EV_MULTIPLICITY 1
		59	#endif
		60
		61	#ifndef EV_PERIODIC_ENABLE
		62	# define EV_PERIODIC_ENABLE 1
		63	#endif
		64
		65	#ifndef EV_STAT_ENABLE
		66	# define EV_STAT_ENABLE 1
		67	#endif
		68
		69	#ifndef EV_IDLE_ENABLE
		70	# define EV_IDLE_ENABLE 1
		71	#endif
		72
		73	#ifndef EV_FORK_ENABLE
		74	# define EV_FORK_ENABLE 1
		75	#endif
		76
		77	#ifndef EV_EMBED_ENABLE
		78	# define EV_EMBED_ENABLE 1
		79	#endif
		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
		90	/*****************************************************************************/
		91
		92	#if EV_STAT_ENABLE
		93	# include <sys/stat.h>
		94	#endif
		95
		96	/* support multiple event loops? */
		97	#if EV_MULTIPLICITY
		98	struct ev_loop;
		99	# define EV_P struct ev_loop *loop
		100	# define EV_P_ EV_P,
		101	# define EV_A loop
		102	# define EV_A_ EV_A,
		103	# define EV_DEFAULT_UC ev_default_loop_uc ()
		104	# define EV_DEFAULT_UC_ EV_DEFAULT_UC,
		105	# define EV_DEFAULT ev_default_loop (0)
		106	# define EV_DEFAULT_ EV_DEFAULT,
		107	#else
		108	# define EV_P void
		109	# define EV_P_
		110	# define EV_A
		111	# define EV_A_
		112	# define EV_DEFAULT
		113	# define EV_DEFAULT_
		114	# define EV_DEFAULT_UC
		115	# define EV_DEFAULT_UC_
		116	# undef EV_EMBED_ENABLE
		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	/*****************************************************************************/
		126
35	/* eventmask, revents, events... */	127	/* eventmask, revents, events... */
36	#define EV_UNDEF -1 /* guaranteed to be invalid */	128	#define EV_UNDEF -1 /* guaranteed to be invalid */
37	#define EV_NONE 0x000000	129	#define EV_NONE 0x00 /* no events */
38	#define EV_READ 0x000001	130	#define EV_READ 0x01 /* ev_io detected read will not block */
39	#define EV_WRITE 0x000002	131	#define EV_WRITE 0x02 /* ev_io detected write will not block */
40	#define EV_TIMEOUT 0x000004	132	#define EV_IOFDSET 0x80 /* internal use only */
41	#define EV_SIGNAL 0x000008	133	#define EV_TIMEOUT 0x00000100 /* timer timed out */
42	#define EV_IDLE 0x000010	134	#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
43	#define EV_CHECK 0x000020	135	#define EV_SIGNAL 0x00000400 /* signal was received */
44	#define EV_PREPARE 0x000040	136	#define EV_CHILD 0x00000800 /* child/pid had status change */
45	#define EV_CHILD 0x000080	137	#define EV_STAT 0x00001000 /* stat data changed */
46	#define EV_ERROR 0x800000	138	#define EV_IDLE 0x00002000 /* event loop is idling */
		139	#define EV_PREPARE 0x00004000 /* event loop about to poll */
		140	#define EV_CHECK 0x00008000 /* event loop finished poll */
		141	#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		142	#define EV_FORK 0x00020000 /* event loop resumed in child */
		143	#define EV_ASYNC 0x00040000 /* async intra-loop signal */
		144	#define EV_ERROR 0x80000000 /* sent when an error occurs */
47		145
48	/* 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 */
49	#ifndef EV_COMMON	147	#ifndef EV_COMMON
50	# define EV_COMMON void *data	148	# define EV_COMMON void *data;
51	#endif	149	#endif
52	#ifndef EV_PROTOTYPES	150	#ifndef EV_PROTOTYPES
53	# define EV_PROTOTYPES 1	151	# define EV_PROTOTYPES 1
54	#endif	152	#endif
55		153
56	#define EV_VERSION_MAJOR 1	154	#define EV_VERSION_MAJOR 3
57	#define EV_VERSION_MINOR 1	155	#define EV_VERSION_MINOR 0
		156
		157	#ifndef EV_CB_DECLARE
		158	# define EV_CB_DECLARE(type) void (cb)(EV_P_ struct type w, int revents);
		159	#endif
		160	#ifndef EV_CB_INVOKE
		161	# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
		162	#endif
58		163
59	/*	164	/*
60	* struct member types:	165	* struct member types:
61	* 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.
62	* ro: can be read anytime, but only changed when the watcher isn't active	167	* ro: can be read anytime, but only changed when the watcher isn't active
63	* rw: can be read and modified anytime, even when the watcher is active	168	* rw: can be read and modified anytime, even when the watcher is active
		169	*
		170	* some internal details that might be helpful for debugging:
		171	*
		172	* active is either 0, which means the watcher is not active,
		173	* or the array index of the watcher (periodics, timers)
		174	* or the array index + 1 (most other watchers)
		175	* or simply 1 for watchers that aren't in some array.
		176	* pending is either 0, in which case the watcher isn't,
		177	* or the array index + 1 in the pendings array.
64	*/	178	*/
65		179
66	/* shared by all watchers */	180	/* shared by all watchers */
67	#define EV_WATCHER(type) \	181	#define EV_WATCHER(type) \
68	int active; /* private */ \	182	int active; /* private */ \
69	int pending; /* private */ \	183	int pending; /* private */ \
		184	int priority; /* private */ \
70	EV_COMMON; /* rw */ \	185	EV_COMMON /* rw */ \
71	void (cb)(struct type , int revents); /* rw / / gets invoked with an eventmask */	186	EV_CB_DECLARE (type) /* private */
72		187
73	#define EV_WATCHER_LIST(type) \	188	#define EV_WATCHER_LIST(type) \
74	EV_WATCHER (type); \	189	EV_WATCHER (type) \
75	struct type next / private */	190	struct ev_watcher_list next; / private */
76		191
77	#define EV_WATCHER_TIME(type) \	192	#define EV_WATCHER_TIME(type) \
78	EV_WATCHER (type); \	193	EV_WATCHER (type) \
79	ev_tstamp at /* private */	194	ev_tstamp at; /* private */
80		195
81	/* base class, nothing to see here unless you subclass */	196	/* base class, nothing to see here unless you subclass */
82	struct ev_watcher {	197	typedef struct ev_watcher
		198	{
83	EV_WATCHER (ev_watcher);	199	EV_WATCHER (ev_watcher)
84	};	200	} ev_watcher;
85		201
86	/* base class, nothing to see here unless you subclass */	202	/* base class, nothing to see here unless you subclass */
87	struct ev_watcher_list {	203	typedef struct ev_watcher_list
		204	{
88	EV_WATCHER_LIST (ev_watcher_list);	205	EV_WATCHER_LIST (ev_watcher_list)
89	};	206	} ev_watcher_list;
90		207
91	/* base class, nothing to see here unless you subclass */	208	/* base class, nothing to see here unless you subclass */
92	struct ev_watcher_time {	209	typedef struct ev_watcher_time
		210	{
93	EV_WATCHER_TIME (ev_watcher_time);	211	EV_WATCHER_TIME (ev_watcher_time)
94	};	212	} ev_watcher_time;
95
96	/* invoked after a specific time, repeatable (based on monotonic clock) */
97	struct ev_timer
98	{
99	EV_WATCHER_TIME (ev_timer);
100
101	ev_tstamp repeat; /* rw */
102	};
103
104	/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
105	struct ev_periodic
106	{
107	EV_WATCHER_TIME (ev_periodic);
108
109	ev_tstamp interval; /* rw */
110	};
111		213
112	/* invoked when fd is either EV_READable or EV_WRITEable */	214	/* invoked when fd is either EV_READable or EV_WRITEable */
		215	/* revent EV_READ, EV_WRITE */
113	struct ev_io	216	typedef struct ev_io
114	{	217	{
115	EV_WATCHER_LIST (ev_io);	218	EV_WATCHER_LIST (ev_io)
116		219
117	int fd; /* ro */	220	int fd; /* ro */
118	int events; /* ro */	221	int events; /* ro */
119	};	222	} ev_io;
		223
		224	/* invoked after a specific time, repeatable (based on monotonic clock) */
		225	/* revent EV_TIMEOUT */
		226	typedef struct ev_timer
		227	{
		228	EV_WATCHER_TIME (ev_timer)
		229
		230	ev_tstamp repeat; /* rw */
		231	} ev_timer;
		232
		233	/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
		234	/* revent EV_PERIODIC */
		235	typedef struct ev_periodic
		236	{
		237	EV_WATCHER_TIME (ev_periodic)
		238
		239	ev_tstamp offset; /* rw */
		240	ev_tstamp interval; /* rw */
		241	ev_tstamp (reschedule_cb)(struct ev_periodic w, ev_tstamp now); /* rw */
		242	} ev_periodic;
120		243
121	/* invoked when the given signal has been received */	244	/* invoked when the given signal has been received */
		245	/* revent EV_SIGNAL */
122	struct ev_signal	246	typedef struct ev_signal
123	{	247	{
124	EV_WATCHER_LIST (ev_signal);	248	EV_WATCHER_LIST (ev_signal)
125		249
126	int signum; /* ro */	250	int signum; /* ro */
127	};	251	} ev_signal;
128		252
		253	/* invoked when sigchld is received and waitpid indicates the given pid */
		254	/* revent EV_CHILD */
		255	/* does not support priorities */
		256	typedef struct ev_child
		257	{
		258	EV_WATCHER_LIST (ev_child)
		259
		260	int flags; /* private */
		261	int pid; /* ro */
		262	int rpid; /* rw, holds the received pid */
		263	int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
		264	} ev_child;
		265
		266	#if EV_STAT_ENABLE
		267	/* st_nlink = 0 means missing file or other error */
		268	# ifdef _WIN32
		269	typedef struct _stati64 ev_statdata;
		270	# else
		271	typedef struct stat ev_statdata;
		272	# endif
		273
		274	/* invoked each time the stat data changes for a given path */
		275	/* revent EV_STAT */
		276	typedef struct ev_stat
		277	{
		278	EV_WATCHER_LIST (ev_stat)
		279
		280	ev_timer timer; /* private */
		281	ev_tstamp interval; /* ro */
		282	const char path; / ro */
		283	ev_statdata prev; /* ro */
		284	ev_statdata attr; /* ro */
		285
		286	int wd; /* wd for inotify, fd for kqueue */
		287	} ev_stat;
		288	#endif
		289
		290	#if EV_IDLE_ENABLE
129	/* invoked when the nothing else needs to be done, keeps the process from blocking */	291	/* invoked when the nothing else needs to be done, keeps the process from blocking */
		292	/* revent EV_IDLE */
130	struct ev_idle	293	typedef struct ev_idle
131	{	294	{
132	EV_WATCHER (ev_idle);	295	EV_WATCHER (ev_idle)
133	};	296	} ev_idle;
		297	#endif
134		298
135	/* invoked for each run of the mainloop, just before the blocking call */	299	/* invoked for each run of the mainloop, just before the blocking call */
136	/* you can still change events in any way you like */	300	/* you can still change events in any way you like */
		301	/* revent EV_PREPARE */
137	struct ev_prepare	302	typedef struct ev_prepare
138	{	303	{
139	EV_WATCHER (ev_prepare);	304	EV_WATCHER (ev_prepare)
		305	} ev_prepare;
		306
		307	/* invoked for each run of the mainloop, just after the blocking call */
		308	/* revent EV_CHECK */
		309	typedef struct ev_check
		310	{
		311	EV_WATCHER (ev_check)
		312	} ev_check;
		313
		314	#if EV_FORK_ENABLE
		315	/* the callback gets invoked before check in the child process when a fork was detected */
		316	typedef struct ev_fork
		317	{
		318	EV_WATCHER (ev_fork)
		319	} ev_fork;
		320	#endif
		321
		322	#if EV_EMBED_ENABLE
		323	/* used to embed an event loop inside another */
		324	/* the callback gets invoked when the event loop has handled events, and can be 0 */
		325	typedef struct ev_embed
		326	{
		327	EV_WATCHER (ev_embed)
		328
		329	struct ev_loop other; / ro */
		330	ev_io io; /* private */
		331	ev_prepare prepare; /* private */
		332	ev_check check; /* unused */
		333	ev_timer timer; /* unused */
		334	ev_periodic periodic; /* unused */
		335	ev_idle idle; /* unused */
		336	ev_fork fork; /* unused */
		337	} ev_embed;
		338	#endif
		339
		340	#if EV_ASYNC_ENABLE
		341	/* invoked when somebody calls ev_async_send on the watcher */
		342	/* revent EV_ASYNC */
		343	typedef struct ev_async
		344	{
		345	EV_WATCHER (ev_async)
		346
		347	EV_ATOMIC_T sent; /* private */
		348	} ev_async;
		349
		350	# define ev_async_pending(w) ((w)->sent + 0)
		351	#endif
		352
		353	/* the presence of this union forces similar struct layout */
		354	union ev_any_watcher
		355	{
		356	struct ev_watcher w;
		357	struct ev_watcher_list wl;
		358
		359	struct ev_io io;
		360	struct ev_timer timer;
		361	struct ev_periodic periodic;
		362	struct ev_signal signal;
		363	struct ev_child child;
		364	#if EV_STAT_ENABLE
		365	struct ev_stat stat;
		366	#endif
		367	#if EV_IDLE_ENABLE
		368	struct ev_idle idle;
		369	#endif
		370	struct ev_prepare prepare;
		371	struct ev_check check;
		372	#if EV_FORK_ENABLE
		373	struct ev_fork fork;
		374	#endif
		375	#if EV_EMBED_ENABLE
		376	struct ev_embed embed;
		377	#endif
		378	#if EV_ASYNC_ENABLE
		379	struct ev_async async;
		380	#endif
140	};	381	};
141		382
142	/* invoked for each run of the mainloop, just after the blocking call */	383	/* bits for ev_default_loop and ev_loop_new */
143	struct ev_check	384	/* the default */
144	{	385	#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
145	EV_WATCHER (ev_check);	386	/* flag bits */
146	};	387	#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
		388	#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
		389	/* method bits to be ored together */
		390	#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
		391	#define EVBACKEND_POLL 0x00000002U /* !win */
		392	#define EVBACKEND_EPOLL 0x00000004U /* linux */
		393	#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
		394	#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 / / NYI */
		395	#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
147		396
148	/* invoked when sigchld is received and waitpid indicates the givne pid */
149	struct ev_child
150	{
151	EV_WATCHER_LIST (ev_child);
152
153	int pid; /* ro */
154	int status; /* rw, holds the exit status, use the macros from sys/wait.h */
155	};
156
157	#define EVMETHOD_NONE 0
158	#define EVMETHOD_SELECT 1
159	#define EVMETHOD_EPOLL 2
160	#if EV_PROTOTYPES	397	#if EV_PROTOTYPES
161	extern int ev_method;
162	int ev_init (int flags); /* returns ev_method */
163	int ev_version_major (void);	398	int ev_version_major (void);
164	int ev_version_minor (void);	399	int ev_version_minor (void);
165		400
166	/* these three calls are suitable for plugging into pthread_atfork */	401	unsigned int ev_supported_backends (void);
167	void ev_prefork (void);	402	unsigned int ev_recommended_backends (void);
168	void ev_postfork_parent (void);	403	unsigned int ev_embeddable_backends (void);
169	void ev_postfork_child (void);
170		404
171	extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
172	ev_tstamp ev_time (void);	405	ev_tstamp ev_time (void);
		406	void ev_sleep (ev_tstamp delay); /* sleep for a while */
		407
		408	/* Sets the allocation function to use, works like realloc.
		409	* It is used to allocate and free memory.
		410	* If it returns zero when memory needs to be allocated, the library might abort
		411	* or take some potentially destructive action.
		412	* The default is your system realloc function.
		413	*/
		414	void ev_set_allocator (void (cb)(void *ptr, long size));
		415
		416	/* set the callback function to call on a
		417	* retryable syscall error
		418	* (such as failed select, poll, epoll_wait)
		419	*/
		420	void ev_set_syserr_cb (void (cb)(const char msg));
		421
		422	#if EV_MULTIPLICITY
		423	EV_INLINE struct ev_loop *
		424	ev_default_loop_uc (void)
		425	{
		426	extern struct ev_loop *ev_default_loop_ptr;
		427
		428	return ev_default_loop_ptr;
		429	}
		430
		431	/* the default loop is the only one that handles signals and child watchers */
		432	/* you can call this as often as you like */
		433	EV_INLINE struct ev_loop *
		434	ev_default_loop (unsigned int flags)
		435	{
		436	struct ev_loop *loop = ev_default_loop_uc ();
		437
		438	if (!loop)
		439	{
		440	extern struct ev_loop *ev_default_loop_init (unsigned int flags);
		441
		442	loop = ev_default_loop_init (flags);
		443	}
		444
		445	return loop;
		446	}
		447
		448	/* create and destroy alternative loops that don't handle signals */
		449	struct ev_loop *ev_loop_new (unsigned int flags);
		450	void ev_loop_destroy (EV_P);
		451	void ev_loop_fork (EV_P);
		452	void ev_loop_verify (EV_P);
		453
		454	ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
		455
		456	#else
		457
		458	int ev_default_loop (unsigned int flags); /* returns true when successful */
		459
		460	EV_INLINE ev_tstamp
		461	ev_now (void)
		462	{
		463	extern ev_tstamp ev_rt_now;
		464
		465	return ev_rt_now;
		466	}
		467	#endif /* multiplicity */
		468
		469	EV_INLINE int
		470	ev_is_default_loop (EV_P)
		471	{
		472	#if EV_MULTIPLICITY
		473	extern struct ev_loop *ev_default_loop_ptr;
		474
		475	return !!(EV_A == ev_default_loop_ptr);
		476	#else
		477	return 1;
173	#endif	478	#endif
		479	}
		480
		481	void ev_default_destroy (void); /* destroy the default loop */
		482	/* this needs to be called after fork, to duplicate the default loop */
		483	/* if you create alternative loops you have to call ev_loop_fork on them */
		484	/* you can call it in either the parent or the child */
		485	/* you can actually call it at any time, anywhere :) */
		486	void ev_default_fork (void);
		487
		488	unsigned int ev_backend (EV_P); /* backend in use by loop */
		489	unsigned int ev_loop_count (EV_P); /* number of loop iterations */
		490	#endif /* prototypes */
174		491
175	#define EVLOOP_NONBLOCK 1 /* do not block/wait */	492	#define EVLOOP_NONBLOCK 1 /* do not block/wait */
176	#define EVLOOP_ONESHOT 2 /* block once only */	493	#define EVLOOP_ONESHOT 2 /* block once only */
		494	#define EVUNLOOP_CANCEL 0 /* undo unloop */
		495	#define EVUNLOOP_ONE 1 /* unloop once */
		496	#define EVUNLOOP_ALL 2 /* unloop all loops */
		497
177	#if EV_PROTOTYPES	498	#if EV_PROTOTYPES
178	void ev_loop (int flags);	499	void ev_loop (EV_P_ int flags);
179	extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */	500	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 */
		501
		502	void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
		503	void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
		504
		505	/*
		506	* ref/unref can be used to add or remove a refcount on the mainloop. every watcher
		507	* keeps one reference. if you have a long-runing watcher you never unregister that
		508	* should not keep ev_loop from running, unref() after starting, and ref() before stopping.
		509	*/
		510	void ev_ref (EV_P);
		511	void ev_unref (EV_P);
180		512
181	/* convinience function, wait for a single event, without registering an event watcher */	513	/* convinience function, wait for a single event, without registering an event watcher */
182	/* if timeout is < 0, do wait indefinitely */	514	/* if timeout is < 0, do wait indefinitely */
183	void ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg);	515	void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg);
184	#endif	516	#endif
185		517
186	/* these may evaluate ev multiple times, and the other arguments at most once */	518	/* these may evaluate ev multiple times, and the other arguments at most once */
187	/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */	519	/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
188	#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0)	520	#define ev_init(ev,cb_) do { \
		521	((ev_watcher )(void )(ev))->active = \
		522	((ev_watcher )(void )(ev))->pending = \
		523	((ev_watcher )(void )(ev))->priority = 0; \
		524	ev_set_cb ((ev), cb_); \
		525	} while (0)
189		526
190	#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)	527	#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) \| EV_IOFDSET; } while (0)
191	#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)	528	#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
192	#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0)	529	#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
193	#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)	530	#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
		531	#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
		532	#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
194	#define evidle_set(ev) /* nop, yes, this is a serious in-joke */	533	#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
195	#define evprepare_set(ev) /* nop, yes, this is a serious in-joke */	534	#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
196	#define evcheck_set(ev) /* nop, yes, this is a serious in-joke */	535	#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
		536	#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
		537	#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
197	#define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)	538	#define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
198		539
199	#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0)	540	#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
200	#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0)	541	#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
201	#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0)	542	#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
202	#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0)	543	#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
		544	#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
		545	#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
203	#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0)	546	#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
204	#define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0)	547	#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
205	#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0)	548	#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
		549	#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
		550	#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
206	#define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0)	551	#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
207		552
		553	#define ev_is_pending(ev) (0 + ((ev_watcher )(void )(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
208	#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */	554	#define ev_is_active(ev) (0 + ((ev_watcher )(void )(ev))->active) /* ro, true when the watcher has been started */
		555
		556	#define ev_priority(ev) ((((ev_watcher )(void )(ev))->priority) + 0)
		557	#define ev_cb(ev) (ev)->cb /* rw */
		558	#define ev_set_priority(ev,pri) ((ev_watcher )(void )(ev))->priority = (pri)
		559
		560	#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
		561
		562	#ifndef ev_set_cb
		563	# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
		564	#endif
209		565
210	/* stopping (enabling, adding) a watcher does nothing if it is already running */	566	/* stopping (enabling, adding) a watcher does nothing if it is already running */
211	/* stopping (disabling, deleting) a watcher does nothing unless its already running */	567	/* stopping (disabling, deleting) a watcher does nothing unless its already running */
212	#if EV_PROTOTYPES	568	#if EV_PROTOTYPES
		569
		570	/* feeds an event into a watcher as if the event actually occured */
		571	/* accepts any ev_watcher type */
		572	void ev_feed_event (EV_P_ void *w, int revents);
		573	void ev_feed_fd_event (EV_P_ int fd, int revents);
		574	void ev_feed_signal_event (EV_P_ int signum);
		575	void ev_invoke (EV_P_ void *w, int revents);
		576	int ev_clear_pending (EV_P_ void *w);
		577
213	void evio_start (struct ev_io *w);	578	void ev_io_start (EV_P_ ev_io *w);
214	void evio_stop (struct ev_io *w);	579	void ev_io_stop (EV_P_ ev_io *w);
215		580
216	void evtimer_start (struct ev_timer *w);	581	void ev_timer_start (EV_P_ ev_timer *w);
217	void evtimer_stop (struct ev_timer *w);	582	void ev_timer_stop (EV_P_ ev_timer *w);
218	void evtimer_again (struct ev_timer w); / stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */	583	/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
		584	void ev_timer_again (EV_P_ ev_timer *w);
219		585
		586	#if EV_PERIODIC_ENABLE
220	void evperiodic_start (struct ev_periodic *w);	587	void ev_periodic_start (EV_P_ ev_periodic *w);
221	void evperiodic_stop (struct ev_periodic *w);	588	void ev_periodic_stop (EV_P_ ev_periodic *w);
		589	void ev_periodic_again (EV_P_ ev_periodic *w);
		590	#endif
222		591
		592	/* only supported in the default loop */
223	void evsignal_start (struct ev_signal *w);	593	void ev_signal_start (EV_P_ ev_signal *w);
224	void evsignal_stop (struct ev_signal *w);	594	void ev_signal_stop (EV_P_ ev_signal *w);
225		595
226	void evidle_start (struct ev_idle *w);	596	/* only supported in the default loop */
227	void evidle_stop (struct ev_idle *w);
228
229	void evprepare_start (struct ev_prepare *w);
230	void evprepare_stop (struct ev_prepare *w);
231
232	void evcheck_start (struct ev_check *w);
233	void evcheck_stop (struct ev_check *w);
234
235	void evchild_start (struct ev_child *w);	597	void ev_child_start (EV_P_ ev_child *w);
236	void evchild_stop (struct ev_child *w);	598	void ev_child_stop (EV_P_ ev_child *w);
		599
		600	# if EV_STAT_ENABLE
		601	void ev_stat_start (EV_P_ ev_stat *w);
		602	void ev_stat_stop (EV_P_ ev_stat *w);
		603	void ev_stat_stat (EV_P_ ev_stat *w);
237	#endif	604	# endif
238		605
		606	# if EV_IDLE_ENABLE
		607	void ev_idle_start (EV_P_ ev_idle *w);
		608	void ev_idle_stop (EV_P_ ev_idle *w);
239	#endif	609	# endif
240		610
		611	void ev_prepare_start (EV_P_ ev_prepare *w);
		612	void ev_prepare_stop (EV_P_ ev_prepare *w);
		613
		614	void ev_check_start (EV_P_ ev_check *w);
		615	void ev_check_stop (EV_P_ ev_check *w);
		616
		617	# if EV_FORK_ENABLE
		618	void ev_fork_start (EV_P_ ev_fork *w);
		619	void ev_fork_stop (EV_P_ ev_fork *w);
		620	# endif
		621
		622	# if EV_EMBED_ENABLE
		623	/* only supported when loop to be embedded is in fact embeddable */
		624	void ev_embed_start (EV_P_ ev_embed *w);
		625	void ev_embed_stop (EV_P_ ev_embed *w);
		626	void ev_embed_sweep (EV_P_ ev_embed *w);
		627	# endif
		628
		629	# if EV_ASYNC_ENABLE
		630	void ev_async_start (EV_P_ ev_async *w);
		631	void ev_async_stop (EV_P_ ev_async *w);
		632	void ev_async_send (EV_P_ ev_async *w);
		633	# endif
		634
		635	#endif
		636
		637	#ifdef __cplusplus
		638	}
		639	#endif
		640
		641	#endif
		642

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.h (file contents): Revision 1.14 by root, Wed Oct 31 20:46:44 2007 UTC vs. Revision 1.102 by root, Thu May 22 02:44:57 2008 UTC

Diff Legend

Comparing libev/ev.h (file contents):
Revision 1.14 by root, Wed Oct 31 20:46:44 2007 UTC vs.
Revision 1.102 by root, Thu May 22 02:44:57 2008 UTC