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

Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.160 by root, Sat Dec 1 22:57:20 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
71	#ifndef WIN32
72	# include <unistd.h>
73	# include <sys/time.h>
74	# include <sys/wait.h>
75	#endif
76	/**/
77
78	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1
80	#endif
81
82	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1
84	#endif
85
86	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88	#endif
89
90	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0
92	#endif
93
94	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0
96	#endif
97
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif
111
112	/**/
113
114	#ifndef CLOCK_MONOTONIC
115	# undef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0
117	#endif
118
119	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0
122	#endif
123
124	/**/
125
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
130
131	#ifdef EV_H	123	#ifdef EV_H
132	# include EV_H	124	# include EV_H
133	#else	125	#else
134	# include "ev.h"	126	# include "ev.h"
135	#endif	127	#endif
136		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
		220
		221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
		224
137	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
139	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
140	#else	235	#else
141	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
142	# define inline static	238	# define inline_size static
		239	# define noinline
143	#endif	240	#endif
144		241
145	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
147		244
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
151	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
154		254
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		256
		257	#ifdef _WIN32
157	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
158		260
159	/*****************************************************************************/	261	/*****************************************************************************/
160		262
161	static void (syserr_cb)(const char msg);	263	static void (syserr_cb)(const char msg);
162		264
		265	void
163	void ev_set_syserr_cb (void (cb)(const char msg))	266	ev_set_syserr_cb (void (cb)(const char msg))
164	{	267	{
165	syserr_cb = cb;	268	syserr_cb = cb;
166	}	269	}
167		270
168	static void	271	static void noinline
169	syserr (const char *msg)	272	syserr (const char *msg)
170	{	273	{
171	if (!msg)	274	if (!msg)
172	msg = "(libev) system error";	275	msg = "(libev) system error";
173		276
…		…
180	}	283	}
181	}	284	}
182		285
183	static void (alloc)(void *ptr, long size);	286	static void (alloc)(void *ptr, long size);
184		287
		288	void
185	void ev_set_allocator (void (cb)(void *ptr, long size))	289	ev_set_allocator (void (cb)(void *ptr, long size))
186	{	290	{
187	alloc = cb;	291	alloc = cb;
188	}	292	}
189		293
190	static void *	294	inline_speed void *
191	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
192	{	296	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		298
195	if (!ptr && size)	299	if (!ptr && size)
…		…
209	typedef struct	313	typedef struct
210	{	314	{
211	WL head;	315	WL head;
212	unsigned char events;	316	unsigned char events;
213	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
214	} ANFD;	321	} ANFD;
215		322
216	typedef struct	323	typedef struct
217	{	324	{
218	W w;	325	W w;
219	int events;	326	int events;
220	} ANPENDING;	327	} ANPENDING;
221		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
222	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
223		337
224	struct ev_loop	338	struct ev_loop
225	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	343	#include "ev_vars.h"
228	#undef VAR	344	#undef VAR
229	};	345	};
230	#include "ev_wrap.h"	346	#include "ev_wrap.h"
231		347
232	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
234		350
235	#else	351	#else
236		352
		353	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	355	#include "ev_vars.h"
239	#undef VAR	356	#undef VAR
240		357
241	static int default_loop;	358	static int ev_default_loop_ptr;
242		359
243	#endif	360	#endif
244		361
245	/*****************************************************************************/	362	/*****************************************************************************/
246		363
247	inline ev_tstamp	364	ev_tstamp
248	ev_time (void)	365	ev_time (void)
249	{	366	{
250	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
251	struct timespec ts;	368	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	375	#endif
259	}	376	}
260		377
261	inline ev_tstamp	378	ev_tstamp inline_size
262	get_clock (void)	379	get_clock (void)
263	{	380	{
264	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
266	{	383	{
…		…
271	#endif	388	#endif
272		389
273	return ev_time ();	390	return ev_time ();
274	}	391	}
275		392
		393	#if EV_MULTIPLICITY
276	ev_tstamp	394	ev_tstamp
277	ev_now (EV_P)	395	ev_now (EV_P)
278	{	396	{
279	return rt_now;	397	return ev_rt_now;
280	}	398	}
		399	#endif
281		400
282	#define array_roundsize(type,n) ((n) \| 4 & ~3)	401	#define array_roundsize(type,n) (((n) \| 4) & ~3)
283		402
284	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
286	{ \	405	{ \
287	int newcnt = cur; \	406	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
305	}	424	}
306		425
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		428
315	/*****************************************************************************/	429	/*****************************************************************************/
316		430
317	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
318	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
319	{	461	{
320	while (count--)	462	while (count--)
321	{	463	{
322	base->head = 0;	464	base->head = 0;
…		…
325		467
326	++base;	468	++base;
327	}	469	}
328	}	470	}
329		471
330	void	472	void inline_speed
331	ev_feed_event (EV_P_ void *w, int revents)
332	{
333	W w_ = (W)w;
334
335	if (w_->pending)
336	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
338	return;
339	}
340
341	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}
346
347	static void
348	queue_events (EV_P_ W *events, int eventcnt, int type)
349	{
350	int i;
351
352	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);
354	}
355
356	inline void
357	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
358	{	474	{
359	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	476	ev_io *w;
361		477
362	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	478	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
363	{	479	{
364	int ev = w->events & revents;	480	int ev = w->events & revents;
365		481
366	if (ev)	482	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	489	{
374	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
375	}	491	}
376		492
377	/*****************************************************************************/	493	void inline_size
378
379	static void
380	fd_reify (EV_P)	494	fd_reify (EV_P)
381	{	495	{
382	int i;	496	int i;
383		497
384	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
385	{	499	{
386	int fd = fdchanges [i];	500	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	502	ev_io *w;
389		503
390	int events = 0;	504	int events = 0;
391		505
392	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
393	events \|= w->events;	507	events \|= w->events;
394		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
395	anfd->reify = 0;	518	anfd->reify = 0;
396		519
397	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	521	anfd->events = events;
399	}	522	}
400		523
401	fdchangecnt = 0;	524	fdchangecnt = 0;
402	}	525	}
403		526
404	static void	527	void inline_size
405	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
406	{	529	{
407	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
408	return;	531	return;
409		532
410	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
411		534
412	++fdchangecnt;	535	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
415	}	538	}
416		539
417	static void	540	void inline_speed
418	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
419	{	542	{
420	struct ev_io *w;	543	ev_io *w;
421		544
422	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
423	{	546	{
424	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
426	}	549	}
427	}	550	}
428		551
429	static int	552	int inline_size
430	fd_valid (int fd)	553	fd_valid (int fd)
431	{	554	{
432	#ifdef WIN32	555	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
434	#else	557	#else
435	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
436	#endif	559	#endif
437	}	560	}
438		561
439	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
440	static void	563	static void noinline
441	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
442	{	565	{
443	int fd;	566	int fd;
444		567
445	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
449	}	572	}
450		573
451	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
452	static void	575	static void noinline
453	fd_enomem (EV_P)	576	fd_enomem (EV_P)
454	{	577	{
455	int fd;	578	int fd;
456		579
457	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
461	return;	584	return;
462	}	585	}
463	}	586	}
464		587
465	/* usually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
466	static void	589	static void noinline
467	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
468	{	591	{
469	int fd;	592	int fd;
470		593
471	/* this should be highly optimised to not do anything but set a flag */
472	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
473	if (anfds [fd].events)	595	if (anfds [fd].events)
474	{	596	{
475	anfds [fd].events = 0;	597	anfds [fd].events = 0;
476	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
477	}	599	}
478	}	600	}
479		601
480	/*****************************************************************************/	602	/*****************************************************************************/
481		603
482	static void	604	void inline_speed
483	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
484	{	606	{
485	WT w = heap [k];	607	WT w = heap [k];
486		608
487	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	616	heap [k] = w;
495	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
496		618
497	}	619	}
498		620
499	static void	621	void inline_speed
500	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
501	{	623	{
502	WT w = heap [k];	624	WT w = heap [k];
503		625
504	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
518		640
519	heap [k] = w;	641	heap [k] = w;
520	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
521	}	643	}
522		644
523	inline void	645	void inline_size
524	adjustheap (WT *heap, int N, int k, ev_tstamp at)	646	adjustheap (WT *heap, int N, int k)
525	{	647	{
526	ev_tstamp old_at = heap [k]->at;	648	upheap (heap, k);
527	heap [k]->at = at;
528
529	if (old_at < at)
530	downheap (heap, N, k);	649	downheap (heap, N, k);
531	else
532	upheap (heap, k);
533	}	650	}
534		651
535	/*****************************************************************************/	652	/*****************************************************************************/
536		653
537	typedef struct	654	typedef struct
…		…
543	static ANSIG *signals;	660	static ANSIG *signals;
544	static int signalmax;	661	static int signalmax;
545		662
546	static int sigpipe [2];	663	static int sigpipe [2];
547	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
548	static struct ev_io sigev;	665	static ev_io sigev;
549		666
550	static void	667	void inline_size
551	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
552	{	669	{
553	while (count--)	670	while (count--)
554	{	671	{
555	base->head = 0;	672	base->head = 0;
…		…
560	}	677	}
561		678
562	static void	679	static void
563	sighandler (int signum)	680	sighandler (int signum)
564	{	681	{
565	#if WIN32	682	#if _WIN32
566	signal (signum, sighandler);	683	signal (signum, sighandler);
567	#endif	684	#endif
568		685
569	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
570		687
571	if (!gotsig)	688	if (!gotsig)
572	{	689	{
573	int old_errno = errno;	690	int old_errno = errno;
574	gotsig = 1;	691	gotsig = 1;
575	#ifdef WIN32
576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577	#else
578	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
579	#endif
580	errno = old_errno;	693	errno = old_errno;
581	}	694	}
582	}	695	}
583		696
584	void	697	void noinline
585	ev_feed_signal_event (EV_P_ int signum)	698	ev_feed_signal_event (EV_P_ int signum)
586	{	699	{
587	WL w;	700	WL w;
588		701
589	#if EV_MULTIPLICITY	702	#if EV_MULTIPLICITY
590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591	#endif	704	#endif
592		705
593	--signum;	706	--signum;
594		707
595	if (signum < 0 \|\| signum >= signalmax)	708	if (signum < 0 \|\| signum >= signalmax)
…		…
600	for (w = signals [signum].head; w; w = w->next)	713	for (w = signals [signum].head; w; w = w->next)
601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602	}	715	}
603		716
604	static void	717	static void
605	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
606	{	719	{
607	int signum;	720	int signum;
608		721
609	#ifdef WIN32
610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611	#else
612	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
613	#endif
614	gotsig = 0;	723	gotsig = 0;
615		724
616	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
617	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
618	ev_feed_signal_event (EV_A_ signum + 1);	727	ev_feed_signal_event (EV_A_ signum + 1);
619	}	728	}
620		729
621	static void	730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
622	siginit (EV_P)	743	siginit (EV_P)
623	{	744	{
624	#ifndef WIN32	745	fd_intern (sigpipe [0]);
625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628	/* rather than sort out wether we really need nb, set it */
629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631	#endif
632		747
633	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
634	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
635	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
636	}	751	}
637		752
638	/*****************************************************************************/	753	/*****************************************************************************/
639		754
640	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
641		756
642	#ifndef WIN32	757	#ifndef _WIN32
643		758
644	static struct ev_signal childev;	759	static ev_signal childev;
645		760
646	#ifndef WCONTINUED	761	void inline_speed
647	# define WCONTINUED 0
648	#endif
649
650	static void
651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
652	{	763	{
653	struct ev_child *w;	764	ev_child *w;
654		765
655	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
656	if (w->pid == pid \|\| !w->pid)	767	if (w->pid == pid \|\| !w->pid)
657	{	768	{
658	ev_priority (w) = ev_priority (sw); /* need to do it now */	769	ev_priority (w) = ev_priority (sw); /* need to do it now */
659	w->rpid = pid;	770	w->rpid = pid;
660	w->rstatus = status;	771	w->rstatus = status;
661	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
662	}	773	}
663	}	774	}
664		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
665	static void	780	static void
666	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
667	{	782	{
668	int pid, status;	783	int pid, status;
669		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
671	{	787	if (!WCONTINUED
		788	\|\| errno != EINVAL
		789	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		790	return;
		791
672	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674		795
675	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
677	}
678	}	799	}
679		800
680	#endif	801	#endif
681		802
682	/*****************************************************************************/	803	/*****************************************************************************/
683		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
684	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
685	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
686	#endif	810	#endif
687	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
688	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
705	{	829	{
706	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
707	}	831	}
708		832
709	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
710	static int	834	int inline_size
711	enable_secure (void)	835	enable_secure (void)
712	{	836	{
713	#ifdef WIN32	837	#ifdef _WIN32
714	return 0;	838	return 0;
715	#else	839	#else
716	return getuid () != geteuid ()	840	return getuid () != geteuid ()
717	\|\| getgid () != getegid ();	841	\|\| getgid () != getegid ();
718	#endif	842	#endif
719	}	843	}
720		844
721	int	845	unsigned int
722	ev_method (EV_P)	846	ev_supported_backends (void)
723	{	847	{
724	return method;	848	unsigned int flags = 0;
725	}
726		849
727	static void	850	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
728	loop_init (EV_P_ int methods)	851	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
729	{	861	{
730	if (!method)	862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	\| EVBACKEND_KQUEUE
		882	\| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
731	{	895	{
732	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
733	{	897	{
734	struct timespec ts;	898	struct timespec ts;
735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736	have_monotonic = 1;	900	have_monotonic = 1;
737	}	901	}
738	#endif	902	#endif
739		903
740	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
741	mn_now = get_clock ();	905	mn_now = get_clock ();
742	now_floor = mn_now;	906	now_floor = mn_now;
743	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
744		908
745	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
746	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
		914
		915	if (!(flags & EVFLAG_NOENV)
		916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
747	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
748	else
749	methods = EVMETHOD_ANY;
750		919
751	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags \|= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
752	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
754	#endif	931	#endif
755	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757	#endif	934	#endif
758	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760	#endif	937	#endif
761	#if EV_USE_POLL	938	#if EV_USE_POLL
762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763	#endif	940	#endif
764	#if EV_USE_SELECT	941	#if EV_USE_SELECT
765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766	#endif	943	#endif
767		944
768	ev_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
769	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
770	}	947	}
771	}	948	}
772		949
773	void	950	static void noinline
774	loop_destroy (EV_P)	951	loop_destroy (EV_P)
775	{	952	{
776	int i;	953	int i;
777		954
778	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780	#endif	965	#endif
781	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783	#endif	968	#endif
784	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786	#endif	971	#endif
787	#if EV_USE_POLL	972	#if EV_USE_POLL
788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789	#endif	974	#endif
790	#if EV_USE_SELECT	975	#if EV_USE_SELECT
791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792	#endif	977	#endif
793		978
794	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
795	array_free (pending, [i]);	980	array_free (pending, [i]);
796		981
797	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
798	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
799	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
800	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
801	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
802	array_free_microshit (prepare);	987	#endif
803	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
804		991
805	method = 0;	992	backend = 0;
806	}	993	}
807		994
808	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
809	loop_fork (EV_P)	998	loop_fork (EV_P)
810	{	999	{
		1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
811	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813	#endif	1008	#endif
814	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
816	#endif	1011	#endif
817		1012
818	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
819	{	1014	{
820	/* default loop */	1015	/* default loop */
…		…
833	postfork = 0;	1028	postfork = 0;
834	}	1029	}
835		1030
836	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
837	struct ev_loop *	1032	struct ev_loop *
838	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
839	{	1034	{
840	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1035	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
841		1036
842	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
843		1038
844	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
845		1040
846	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
847	return loop;	1042	return loop;
848		1043
849	return 0;	1044	return 0;
850	}	1045	}
851		1046
…		…
864		1059
865	#endif	1060	#endif
866		1061
867	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
868	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
869	#else	1065	#else
870	int	1066	int
		1067	ev_default_loop (unsigned int flags)
871	#endif	1068	#endif
872	ev_default_loop (int methods)
873	{	1069	{
874	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
875	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
876	return 0;	1072	return 0;
877		1073
878	if (!default_loop)	1074	if (!ev_default_loop_ptr)
879	{	1075	{
880	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
881	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882	#else	1078	#else
883	default_loop = 1;	1079	ev_default_loop_ptr = 1;
884	#endif	1080	#endif
885		1081
886	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
887		1083
888	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
889	{	1085	{
890	siginit (EV_A);	1086	siginit (EV_A);
891		1087
892	#ifndef WIN32	1088	#ifndef _WIN32
893	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
894	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
895	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
897	#endif	1093	#endif
898	}	1094	}
899	else	1095	else
900	default_loop = 0;	1096	ev_default_loop_ptr = 0;
901	}	1097	}
902		1098
903	return default_loop;	1099	return ev_default_loop_ptr;
904	}	1100	}
905		1101
906	void	1102	void
907	ev_default_destroy (void)	1103	ev_default_destroy (void)
908	{	1104	{
909	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
910	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
911	#endif	1107	#endif
912		1108
913	#ifndef WIN32	1109	#ifndef _WIN32
914	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
915	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
916	#endif	1112	#endif
917		1113
918	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
926		1122
927	void	1123	void
928	ev_default_fork (void)	1124	ev_default_fork (void)
929	{	1125	{
930	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
931	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
932	#endif	1128	#endif
933		1129
934	if (method)	1130	if (backend)
935	postfork = 1;	1131	postfork = 1;
936	}	1132	}
937		1133
938	/*****************************************************************************/	1134	/*****************************************************************************/
939		1135
940	static int	1136	int inline_size
941	any_pending (EV_P)	1137	any_pending (EV_P)
942	{	1138	{
943	int pri;	1139	int pri;
944		1140
945	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
947	return 1;	1143	return 1;
948		1144
949	return 0;	1145	return 0;
950	}	1146	}
951		1147
952	static void	1148	void inline_speed
953	call_pending (EV_P)	1149	call_pending (EV_P)
954	{	1150	{
955	int pri;	1151	int pri;
956		1152
957	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
958	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
959	{	1155	{
960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961		1157
962	if (p->w)	1158	if (expect_true (p->w))
963	{	1159	{
		1160	/assert (("non-pending watcher on pending list", p->w->pending));/
		1161
964	p->w->pending = 0;	1162	p->w->pending = 0;
965	EV_CB_INVOKE (p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
966	}	1164	}
967	}	1165	}
968	}	1166	}
969		1167
970	static void	1168	void inline_size
971	timers_reify (EV_P)	1169	timers_reify (EV_P)
972	{	1170	{
973	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
974	{	1172	{
975	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
976		1174
977	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
978		1176
979	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
980	if (w->repeat)	1178	if (w->repeat)
981	{	1179	{
982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
983	((WT)w)->at = mn_now + w->repeat;	1182	((WT)w)->at += w->repeat;
		1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
984	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
985	}	1187	}
986	else	1188	else
987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988		1190
989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990	}	1192	}
991	}	1193	}
992		1194
993	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
994	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
995	{	1198	{
996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997	{	1200	{
998	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
999		1202
1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1001		1204
1002	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
1003	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
1004	{	1207	{
1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
1009	}	1211	}
1010	else if (w->interval)	1212	else if (w->interval)
1011	{	1213	{
1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
1015	}	1217	}
1016	else	1218	else
1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1220
1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020	}	1222	}
1021	}	1223	}
1022		1224
1023	static void	1225	static void noinline
1024	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
1025	{	1227	{
1026	int i;	1228	int i;
1027		1229
1028	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
1029	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
1030	{	1232	{
1031	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
1032		1234
1033	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
1034	((WT)w)->at = w->reschedule_cb (w, rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035	else if (w->interval)	1237	else if (w->interval)
1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037	}	1239	}
1038		1240
1039	/* now rebuild the heap */	1241	/* now rebuild the heap */
1040	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1041	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1042	}	1244	}
		1245	#endif
1043		1246
1044	inline int	1247	int inline_size
1045	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1046	{	1249	{
1047	mn_now = get_clock ();	1250	mn_now = get_clock ();
1048		1251
1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050	{	1253	{
1051	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
1052	return 0;	1255	return 0;
1053	}	1256	}
1054	else	1257	else
1055	{	1258	{
1056	now_floor = mn_now;	1259	now_floor = mn_now;
1057	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1058	return 1;	1261	return 1;
1059	}	1262	}
1060	}	1263	}
1061		1264
1062	static void	1265	void inline_size
1063	time_update (EV_P)	1266	time_update (EV_P)
1064	{	1267	{
1065	int i;	1268	int i;
1066		1269
1067	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1069	{	1272	{
1070	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1071	{	1274	{
1072	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1073		1276
1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
1075	{	1286	{
1076	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1077		1288
1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079	return; /* all is well */	1290	return; /* all is well */
1080		1291
1081	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1082	mn_now = get_clock ();	1293	mn_now = get_clock ();
1083	now_floor = mn_now;	1294	now_floor = mn_now;
1084	}	1295	}
1085		1296
		1297	# if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1087	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089	}	1302	}
1090	}	1303	}
1091	else	1304	else
1092	#endif	1305	#endif
1093	{	1306	{
1094	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1095		1308
1096	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1098	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1099		1314
1100	/* adjust timers. this is easy, as the offset is the same for all */	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
1101	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1102	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1103	}	1318	}
1104		1319
1105	mn_now = rt_now;	1320	mn_now = ev_rt_now;
1106	}	1321	}
1107	}	1322	}
1108		1323
1109	void	1324	void
1110	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
1121	static int loop_done;	1336	static int loop_done;
1122		1337
1123	void	1338	void
1124	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1125	{	1340	{
1126	double block;
1127	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1128		1344
1129	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (expect_false (!activecnt))
1130	{	1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
1131	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1132	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1133	{	1370	{
1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135	call_pending (EV_A);	1372	call_pending (EV_A);
1136	}	1373	}
1137		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
1138	/* we might have forked, so reify kernel state if necessary */	1378	/* we might have forked, so reify kernel state if necessary */
1139	if (expect_false (postfork))	1379	if (expect_false (postfork))
1140	loop_fork (EV_A);	1380	loop_fork (EV_A);
1141		1381
1142	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
1143	fd_reify (EV_A);	1383	fd_reify (EV_A);
1144		1384
1145	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
1146		1388
1147	/* we only need this for !monotonic clock or timers, but as we basically	1389	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idlecnt \|\| !activecnt))
1148	always have timers, we just calculate it always */	1390	block = 0.; /* do not block at all */
		1391	else
		1392	{
		1393	/* update time to cancel out callback processing overhead */
1149	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
1150	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
1151	time_update_monotonic (EV_A);	1396	time_update_monotonic (EV_A);
1152	else	1397	else
1153	#endif	1398	#endif
1154	{	1399	{
1155	rt_now = ev_time ();	1400	ev_rt_now = ev_time ();
1156	mn_now = rt_now;	1401	mn_now = ev_rt_now;
1157	}	1402	}
1158		1403
1159	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1160	block = 0.;
1161	else
1162	{
1163	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
1164		1405
1165	if (timercnt)	1406	if (timercnt)
1166	{	1407	{
1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168	if (block > to) block = to;	1409	if (block > to) block = to;
1169	}	1410	}
1170		1411
		1412	#if EV_PERIODIC_ENABLE
1171	if (periodiccnt)	1413	if (periodiccnt)
1172	{	1414	{
1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174	if (block > to) block = to;	1416	if (block > to) block = to;
1175	}	1417	}
		1418	#endif
1176		1419
1177	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
1178	}	1421	}
1179		1422
1180	method_poll (EV_A_ block);	1423	backend_poll (EV_A_ block);
		1424	}
1181		1425
1182	/* update rt_now, do magic */	1426	/* update ev_rt_now, do magic */
1183	time_update (EV_A);	1427	time_update (EV_A);
1184		1428
1185	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
1186	timers_reify (EV_A); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
1187	periodics_reify (EV_A); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
1188		1434
1189	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
1190	if (idlecnt && !any_pending (EV_A))	1436	if (idlecnt && !any_pending (EV_A))
1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1192		1438
1193	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
1194	if (checkcnt)	1440	if (expect_false (checkcnt))
1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196		1442
1197	call_pending (EV_A);	1443	call_pending (EV_A);
1198	}
1199	while (activecnt && !loop_done);
1200		1444
1201	if (loop_done != 2)	1445	if (expect_false (loop_done))
1202	loop_done = 0;	1446	break;
		1447	}
		1448
		1449	if (loop_done == EVUNLOOP_ONE)
		1450	loop_done = EVUNLOOP_CANCEL;
1203	}	1451	}
1204		1452
1205	void	1453	void
1206	ev_unloop (EV_P_ int how)	1454	ev_unloop (EV_P_ int how)
1207	{	1455	{
1208	loop_done = how;	1456	loop_done = how;
1209	}	1457	}
1210		1458
1211	/*****************************************************************************/	1459	/*****************************************************************************/
1212		1460
1213	inline void	1461	void inline_size
1214	wlist_add (WL *head, WL elem)	1462	wlist_add (WL *head, WL elem)
1215	{	1463	{
1216	elem->next = *head;	1464	elem->next = *head;
1217	*head = elem;	1465	*head = elem;
1218	}	1466	}
1219		1467
1220	inline void	1468	void inline_size
1221	wlist_del (WL *head, WL elem)	1469	wlist_del (WL *head, WL elem)
1222	{	1470	{
1223	while (*head)	1471	while (*head)
1224	{	1472	{
1225	if (*head == elem)	1473	if (*head == elem)
…		…
1230		1478
1231	head = &(*head)->next;	1479	head = &(*head)->next;
1232	}	1480	}
1233	}	1481	}
1234		1482
1235	inline void	1483	void inline_speed
1236	ev_clear_pending (EV_P_ W w)	1484	ev_clear_pending (EV_P_ W w)
1237	{	1485	{
1238	if (w->pending)	1486	if (w->pending)
1239	{	1487	{
1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241	w->pending = 0;	1489	w->pending = 0;
1242	}	1490	}
1243	}	1491	}
1244		1492
1245	inline void	1493	void inline_speed
1246	ev_start (EV_P_ W w, int active)	1494	ev_start (EV_P_ W w, int active)
1247	{	1495	{
1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250		1498
1251	w->active = active;	1499	w->active = active;
1252	ev_ref (EV_A);	1500	ev_ref (EV_A);
1253	}	1501	}
1254		1502
1255	inline void	1503	void inline_size
1256	ev_stop (EV_P_ W w)	1504	ev_stop (EV_P_ W w)
1257	{	1505	{
1258	ev_unref (EV_A);	1506	ev_unref (EV_A);
1259	w->active = 0;	1507	w->active = 0;
1260	}	1508	}
1261		1509
1262	/*****************************************************************************/	1510	/*****************************************************************************/
1263		1511
1264	void	1512	void
1265	ev_io_start (EV_P_ struct ev_io *w)	1513	ev_io_start (EV_P_ ev_io *w)
1266	{	1514	{
1267	int fd = w->fd;	1515	int fd = w->fd;
1268		1516
1269	if (ev_is_active (w))	1517	if (expect_false (ev_is_active (w)))
1270	return;	1518	return;
1271		1519
1272	assert (("ev_io_start called with negative fd", fd >= 0));	1520	assert (("ev_io_start called with negative fd", fd >= 0));
1273		1521
1274	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
…		…
1277		1525
1278	fd_change (EV_A_ fd);	1526	fd_change (EV_A_ fd);
1279	}	1527	}
1280		1528
1281	void	1529	void
1282	ev_io_stop (EV_P_ struct ev_io *w)	1530	ev_io_stop (EV_P_ ev_io *w)
1283	{	1531	{
1284	ev_clear_pending (EV_A_ (W)w);	1532	ev_clear_pending (EV_A_ (W)w);
1285	if (!ev_is_active (w))	1533	if (expect_false (!ev_is_active (w)))
1286	return;	1534	return;
		1535
		1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287		1537
1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1538	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289	ev_stop (EV_A_ (W)w);	1539	ev_stop (EV_A_ (W)w);
1290		1540
1291	fd_change (EV_A_ w->fd);	1541	fd_change (EV_A_ w->fd);
1292	}	1542	}
1293		1543
1294	void	1544	void
1295	ev_timer_start (EV_P_ struct ev_timer *w)	1545	ev_timer_start (EV_P_ ev_timer *w)
1296	{	1546	{
1297	if (ev_is_active (w))	1547	if (expect_false (ev_is_active (w)))
1298	return;	1548	return;
1299		1549
1300	((WT)w)->at += mn_now;	1550	((WT)w)->at += mn_now;
1301		1551
1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1552	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303		1553
1304	ev_start (EV_A_ (W)w, ++timercnt);	1554	ev_start (EV_A_ (W)w, ++timercnt);
1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1555	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1306	timers [timercnt - 1] = w;	1556	timers [timercnt - 1] = w;
1307	upheap ((WT *)timers, timercnt - 1);	1557	upheap ((WT *)timers, timercnt - 1);
1308		1558
		1559	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
		1560	}
		1561
		1562	void
		1563	ev_timer_stop (EV_P_ ev_timer *w)
		1564	{
		1565	ev_clear_pending (EV_A_ (W)w);
		1566	if (expect_false (!ev_is_active (w)))
		1567	return;
		1568
1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310	}
1311		1570
1312	void	1571	{
1313	ev_timer_stop (EV_P_ struct ev_timer *w)	1572	int active = ((W)w)->active;
1314	{
1315	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))
1317	return;
1318		1573
1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1574	if (expect_true (--active < --timercnt))
1320
1321	if (((W)w)->active < timercnt--)
1322	{	1575	{
1323	timers [((W)w)->active - 1] = timers [timercnt];	1576	timers [active] = timers [timercnt];
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1577	adjustheap ((WT *)timers, timercnt, active);
1325	}	1578	}
		1579	}
1326		1580
1327	((WT)w)->at = w->repeat;	1581	((WT)w)->at -= mn_now;
1328		1582
1329	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1330	}	1584	}
1331		1585
1332	void	1586	void
1333	ev_timer_again (EV_P_ struct ev_timer *w)	1587	ev_timer_again (EV_P_ ev_timer *w)
1334	{	1588	{
1335	if (ev_is_active (w))	1589	if (ev_is_active (w))
1336	{	1590	{
1337	if (w->repeat)	1591	if (w->repeat)
		1592	{
		1593	((WT)w)->at = mn_now + w->repeat;
1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1594	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1595	}
1339	else	1596	else
1340	ev_timer_stop (EV_A_ w);	1597	ev_timer_stop (EV_A_ w);
1341	}	1598	}
1342	else if (w->repeat)	1599	else if (w->repeat)
		1600	{
		1601	w->at = w->repeat;
1343	ev_timer_start (EV_A_ w);	1602	ev_timer_start (EV_A_ w);
		1603	}
1344	}	1604	}
1345		1605
		1606	#if EV_PERIODIC_ENABLE
1346	void	1607	void
1347	ev_periodic_start (EV_P_ struct ev_periodic *w)	1608	ev_periodic_start (EV_P_ ev_periodic *w)
1348	{	1609	{
1349	if (ev_is_active (w))	1610	if (expect_false (ev_is_active (w)))
1350	return;	1611	return;
1351		1612
1352	if (w->reschedule_cb)	1613	if (w->reschedule_cb)
1353	((WT)w)->at = w->reschedule_cb (w, rt_now);	1614	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354	else if (w->interval)	1615	else if (w->interval)
1355	{	1616	{
1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1617	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357	/* this formula differs from the one in periodic_reify because we do not always round up */	1618	/* this formula differs from the one in periodic_reify because we do not always round up */
1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1619	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359	}	1620	}
1360		1621
1361	ev_start (EV_A_ (W)w, ++periodiccnt);	1622	ev_start (EV_A_ (W)w, ++periodiccnt);
1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1623	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363	periodics [periodiccnt - 1] = w;	1624	periodics [periodiccnt - 1] = w;
1364	upheap ((WT *)periodics, periodiccnt - 1);	1625	upheap ((WT *)periodics, periodiccnt - 1);
1365		1626
		1627	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
		1628	}
		1629
		1630	void
		1631	ev_periodic_stop (EV_P_ ev_periodic *w)
		1632	{
		1633	ev_clear_pending (EV_A_ (W)w);
		1634	if (expect_false (!ev_is_active (w)))
		1635	return;
		1636
1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367	}
1368		1638
1369	void	1639	{
1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1640	int active = ((W)w)->active;
1371	{
1372	ev_clear_pending (EV_A_ (W)w);
1373	if (!ev_is_active (w))
1374	return;
1375		1641
1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1642	if (expect_true (--active < --periodiccnt))
1377
1378	if (((W)w)->active < periodiccnt--)
1379	{	1643	{
1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1644	periodics [active] = periodics [periodiccnt];
1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1645	adjustheap ((WT *)periodics, periodiccnt, active);
1382	}	1646	}
		1647	}
1383		1648
1384	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1385	}	1650	}
1386		1651
1387	void	1652	void
1388	ev_periodic_again (EV_P_ struct ev_periodic *w)	1653	ev_periodic_again (EV_P_ ev_periodic *w)
1389	{	1654	{
1390	/* TODO: use adjustheap and recalculation */	1655	/* TODO: use adjustheap and recalculation */
1391	ev_periodic_stop (EV_A_ w);	1656	ev_periodic_stop (EV_A_ w);
1392	ev_periodic_start (EV_A_ w);	1657	ev_periodic_start (EV_A_ w);
1393	}	1658	}
1394		1659	#endif
1395	void
1396	ev_idle_start (EV_P_ struct ev_idle *w)
1397	{
1398	if (ev_is_active (w))
1399	return;
1400
1401	ev_start (EV_A_ (W)w, ++idlecnt);
1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403	idles [idlecnt - 1] = w;
1404	}
1405
1406	void
1407	ev_idle_stop (EV_P_ struct ev_idle *w)
1408	{
1409	ev_clear_pending (EV_A_ (W)w);
1410	if (ev_is_active (w))
1411	return;
1412
1413	idles [((W)w)->active - 1] = idles [--idlecnt];
1414	ev_stop (EV_A_ (W)w);
1415	}
1416
1417	void
1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
1419	{
1420	if (ev_is_active (w))
1421	return;
1422
1423	ev_start (EV_A_ (W)w, ++preparecnt);
1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425	prepares [preparecnt - 1] = w;
1426	}
1427
1428	void
1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430	{
1431	ev_clear_pending (EV_A_ (W)w);
1432	if (ev_is_active (w))
1433	return;
1434
1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436	ev_stop (EV_A_ (W)w);
1437	}
1438
1439	void
1440	ev_check_start (EV_P_ struct ev_check *w)
1441	{
1442	if (ev_is_active (w))
1443	return;
1444
1445	ev_start (EV_A_ (W)w, ++checkcnt);
1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447	checks [checkcnt - 1] = w;
1448	}
1449
1450	void
1451	ev_check_stop (EV_P_ struct ev_check *w)
1452	{
1453	ev_clear_pending (EV_A_ (W)w);
1454	if (ev_is_active (w))
1455	return;
1456
1457	checks [((W)w)->active - 1] = checks [--checkcnt];
1458	ev_stop (EV_A_ (W)w);
1459	}
1460		1660
1461	#ifndef SA_RESTART	1661	#ifndef SA_RESTART
1462	# define SA_RESTART 0	1662	# define SA_RESTART 0
1463	#endif	1663	#endif
1464		1664
1465	void	1665	void
1466	ev_signal_start (EV_P_ struct ev_signal *w)	1666	ev_signal_start (EV_P_ ev_signal *w)
1467	{	1667	{
1468	#if EV_MULTIPLICITY	1668	#if EV_MULTIPLICITY
1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1669	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470	#endif	1670	#endif
1471	if (ev_is_active (w))	1671	if (expect_false (ev_is_active (w)))
1472	return;	1672	return;
1473		1673
1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1674	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475		1675
1476	ev_start (EV_A_ (W)w, 1);	1676	ev_start (EV_A_ (W)w, 1);
1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1677	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479		1679
1480	if (!((WL)w)->next)	1680	if (!((WL)w)->next)
1481	{	1681	{
1482	#if WIN32	1682	#if _WIN32
1483	signal (w->signum, sighandler);	1683	signal (w->signum, sighandler);
1484	#else	1684	#else
1485	struct sigaction sa;	1685	struct sigaction sa;
1486	sa.sa_handler = sighandler;	1686	sa.sa_handler = sighandler;
1487	sigfillset (&sa.sa_mask);	1687	sigfillset (&sa.sa_mask);
…		…
1490	#endif	1690	#endif
1491	}	1691	}
1492	}	1692	}
1493		1693
1494	void	1694	void
1495	ev_signal_stop (EV_P_ struct ev_signal *w)	1695	ev_signal_stop (EV_P_ ev_signal *w)
1496	{	1696	{
1497	ev_clear_pending (EV_A_ (W)w);	1697	ev_clear_pending (EV_A_ (W)w);
1498	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
1499	return;	1699	return;
1500		1700
1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1503		1703
1504	if (!signals [w->signum - 1].head)	1704	if (!signals [w->signum - 1].head)
1505	signal (w->signum, SIG_DFL);	1705	signal (w->signum, SIG_DFL);
1506	}	1706	}
1507		1707
1508	void	1708	void
1509	ev_child_start (EV_P_ struct ev_child *w)	1709	ev_child_start (EV_P_ ev_child *w)
1510	{	1710	{
1511	#if EV_MULTIPLICITY	1711	#if EV_MULTIPLICITY
1512	assert (("child watchers are only supported in the default loop", loop == default_loop));	1712	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513	#endif	1713	#endif
1514	if (ev_is_active (w))	1714	if (expect_false (ev_is_active (w)))
1515	return;	1715	return;
1516		1716
1517	ev_start (EV_A_ (W)w, 1);	1717	ev_start (EV_A_ (W)w, 1);
1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1718	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	}	1719	}
1520		1720
1521	void	1721	void
1522	ev_child_stop (EV_P_ struct ev_child *w)	1722	ev_child_stop (EV_P_ ev_child *w)
1523	{	1723	{
1524	ev_clear_pending (EV_A_ (W)w);	1724	ev_clear_pending (EV_A_ (W)w);
1525	if (ev_is_active (w))	1725	if (expect_false (!ev_is_active (w)))
1526	return;	1726	return;
1527		1727
1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1530	}	1730	}
1531		1731
		1732	#if EV_STAT_ENABLE
		1733
		1734	# ifdef _WIN32
		1735	# undef lstat
		1736	# define lstat(a,b) _stati64 (a,b)
		1737	# endif
		1738
		1739	#define DEF_STAT_INTERVAL 5.0074891
		1740	#define MIN_STAT_INTERVAL 0.1074891
		1741
		1742	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1743
		1744	#if EV_USE_INOTIFY
		1745	# define EV_INOTIFY_BUFSIZE 8192
		1746
		1747	static void noinline
		1748	infy_add (EV_P_ ev_stat *w)
		1749	{
		1750	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
		1751
		1752	if (w->wd < 0)
		1753	{
		1754	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1755
		1756	/* monitor some parent directory for speedup hints */
		1757	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1758	{
		1759	char path [4096];
		1760	strcpy (path, w->path);
		1761
		1762	do
		1763	{
		1764	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1765	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1766
		1767	char *pend = strrchr (path, '/');
		1768
		1769	if (!pend)
		1770	break; /* whoops, no '/', complain to your admin */
		1771
		1772	*pend = 0;
		1773	w->wd = inotify_add_watch (fs_fd, path, mask);
		1774	}
		1775	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1776	}
		1777	}
		1778	else
		1779	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1780
		1781	if (w->wd >= 0)
		1782	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1783	}
		1784
		1785	static void noinline
		1786	infy_del (EV_P_ ev_stat *w)
		1787	{
		1788	int slot;
		1789	int wd = w->wd;
		1790
		1791	if (wd < 0)
		1792	return;
		1793
		1794	w->wd = -2;
		1795	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1796	wlist_del (&fs_hash [slot].head, (WL)w);
		1797
		1798	/* remove this watcher, if others are watching it, they will rearm */
		1799	inotify_rm_watch (fs_fd, wd);
		1800	}
		1801
		1802	static void noinline
		1803	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1804	{
		1805	if (slot < 0)
		1806	/* overflow, need to check for all hahs slots */
		1807	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1808	infy_wd (EV_A_ slot, wd, ev);
		1809	else
		1810	{
		1811	WL w_;
		1812
		1813	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1814	{
		1815	ev_stat w = (ev_stat )w_;
		1816	w_ = w_->next; /* lets us remove this watcher and all before it */
		1817
		1818	if (w->wd == wd \|\| wd == -1)
		1819	{
		1820	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1821	{
		1822	w->wd = -1;
		1823	infy_add (EV_A_ w); /* re-add, no matter what */
		1824	}
		1825
		1826	stat_timer_cb (EV_A_ &w->timer, 0);
		1827	}
		1828	}
		1829	}
		1830	}
		1831
		1832	static void
		1833	infy_cb (EV_P_ ev_io *w, int revents)
		1834	{
		1835	char buf [EV_INOTIFY_BUFSIZE];
		1836	struct inotify_event ev = (struct inotify_event )buf;
		1837	int ofs;
		1838	int len = read (fs_fd, buf, sizeof (buf));
		1839
		1840	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1841	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1842	}
		1843
		1844	void inline_size
		1845	infy_init (EV_P)
		1846	{
		1847	if (fs_fd != -2)
		1848	return;
		1849
		1850	fs_fd = inotify_init ();
		1851
		1852	if (fs_fd >= 0)
		1853	{
		1854	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1855	ev_set_priority (&fs_w, EV_MAXPRI);
		1856	ev_io_start (EV_A_ &fs_w);
		1857	}
		1858	}
		1859
		1860	void inline_size
		1861	infy_fork (EV_P)
		1862	{
		1863	int slot;
		1864
		1865	if (fs_fd < 0)
		1866	return;
		1867
		1868	close (fs_fd);
		1869	fs_fd = inotify_init ();
		1870
		1871	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1872	{
		1873	WL w_ = fs_hash [slot].head;
		1874	fs_hash [slot].head = 0;
		1875
		1876	while (w_)
		1877	{
		1878	ev_stat w = (ev_stat )w_;
		1879	w_ = w_->next; /* lets us add this watcher */
		1880
		1881	w->wd = -1;
		1882
		1883	if (fs_fd >= 0)
		1884	infy_add (EV_A_ w); /* re-add, no matter what */
		1885	else
		1886	ev_timer_start (EV_A_ &w->timer);
		1887	}
		1888
		1889	}
		1890	}
		1891
		1892	#endif
		1893
		1894	void
		1895	ev_stat_stat (EV_P_ ev_stat *w)
		1896	{
		1897	if (lstat (w->path, &w->attr) < 0)
		1898	w->attr.st_nlink = 0;
		1899	else if (!w->attr.st_nlink)
		1900	w->attr.st_nlink = 1;
		1901	}
		1902
		1903	static void noinline
		1904	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1905	{
		1906	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1907
		1908	/* we copy this here each the time so that */
		1909	/* prev has the old value when the callback gets invoked */
		1910	w->prev = w->attr;
		1911	ev_stat_stat (EV_A_ w);
		1912
		1913	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1914	if (
		1915	w->prev.st_dev != w->attr.st_dev
		1916	\|\| w->prev.st_ino != w->attr.st_ino
		1917	\|\| w->prev.st_mode != w->attr.st_mode
		1918	\|\| w->prev.st_nlink != w->attr.st_nlink
		1919	\|\| w->prev.st_uid != w->attr.st_uid
		1920	\|\| w->prev.st_gid != w->attr.st_gid
		1921	\|\| w->prev.st_rdev != w->attr.st_rdev
		1922	\|\| w->prev.st_size != w->attr.st_size
		1923	\|\| w->prev.st_atime != w->attr.st_atime
		1924	\|\| w->prev.st_mtime != w->attr.st_mtime
		1925	\|\| w->prev.st_ctime != w->attr.st_ctime
		1926	) {
		1927	#if EV_USE_INOTIFY
		1928	infy_del (EV_A_ w);
		1929	infy_add (EV_A_ w);
		1930	ev_stat_stat (EV_A_ w); /* avoid race... */
		1931	#endif
		1932
		1933	ev_feed_event (EV_A_ w, EV_STAT);
		1934	}
		1935	}
		1936
		1937	void
		1938	ev_stat_start (EV_P_ ev_stat *w)
		1939	{
		1940	if (expect_false (ev_is_active (w)))
		1941	return;
		1942
		1943	/* since we use memcmp, we need to clear any padding data etc. */
		1944	memset (&w->prev, 0, sizeof (ev_statdata));
		1945	memset (&w->attr, 0, sizeof (ev_statdata));
		1946
		1947	ev_stat_stat (EV_A_ w);
		1948
		1949	if (w->interval < MIN_STAT_INTERVAL)
		1950	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1951
		1952	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1953	ev_set_priority (&w->timer, ev_priority (w));
		1954
		1955	#if EV_USE_INOTIFY
		1956	infy_init (EV_A);
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w);
		1960	else
		1961	#endif
		1962	ev_timer_start (EV_A_ &w->timer);
		1963
		1964	ev_start (EV_A_ (W)w, 1);
		1965	}
		1966
		1967	void
		1968	ev_stat_stop (EV_P_ ev_stat *w)
		1969	{
		1970	ev_clear_pending (EV_A_ (W)w);
		1971	if (expect_false (!ev_is_active (w)))
		1972	return;
		1973
		1974	#if EV_USE_INOTIFY
		1975	infy_del (EV_A_ w);
		1976	#endif
		1977	ev_timer_stop (EV_A_ &w->timer);
		1978
		1979	ev_stop (EV_A_ (W)w);
		1980	}
		1981	#endif
		1982
		1983	void
		1984	ev_idle_start (EV_P_ ev_idle *w)
		1985	{
		1986	if (expect_false (ev_is_active (w)))
		1987	return;
		1988
		1989	ev_start (EV_A_ (W)w, ++idlecnt);
		1990	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1991	idles [idlecnt - 1] = w;
		1992	}
		1993
		1994	void
		1995	ev_idle_stop (EV_P_ ev_idle *w)
		1996	{
		1997	ev_clear_pending (EV_A_ (W)w);
		1998	if (expect_false (!ev_is_active (w)))
		1999	return;
		2000
		2001	{
		2002	int active = ((W)w)->active;
		2003	idles [active - 1] = idles [--idlecnt];
		2004	((W)idles [active - 1])->active = active;
		2005	}
		2006
		2007	ev_stop (EV_A_ (W)w);
		2008	}
		2009
		2010	void
		2011	ev_prepare_start (EV_P_ ev_prepare *w)
		2012	{
		2013	if (expect_false (ev_is_active (w)))
		2014	return;
		2015
		2016	ev_start (EV_A_ (W)w, ++preparecnt);
		2017	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2018	prepares [preparecnt - 1] = w;
		2019	}
		2020
		2021	void
		2022	ev_prepare_stop (EV_P_ ev_prepare *w)
		2023	{
		2024	ev_clear_pending (EV_A_ (W)w);
		2025	if (expect_false (!ev_is_active (w)))
		2026	return;
		2027
		2028	{
		2029	int active = ((W)w)->active;
		2030	prepares [active - 1] = prepares [--preparecnt];
		2031	((W)prepares [active - 1])->active = active;
		2032	}
		2033
		2034	ev_stop (EV_A_ (W)w);
		2035	}
		2036
		2037	void
		2038	ev_check_start (EV_P_ ev_check *w)
		2039	{
		2040	if (expect_false (ev_is_active (w)))
		2041	return;
		2042
		2043	ev_start (EV_A_ (W)w, ++checkcnt);
		2044	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2045	checks [checkcnt - 1] = w;
		2046	}
		2047
		2048	void
		2049	ev_check_stop (EV_P_ ev_check *w)
		2050	{
		2051	ev_clear_pending (EV_A_ (W)w);
		2052	if (expect_false (!ev_is_active (w)))
		2053	return;
		2054
		2055	{
		2056	int active = ((W)w)->active;
		2057	checks [active - 1] = checks [--checkcnt];
		2058	((W)checks [active - 1])->active = active;
		2059	}
		2060
		2061	ev_stop (EV_A_ (W)w);
		2062	}
		2063
		2064	#if EV_EMBED_ENABLE
		2065	void noinline
		2066	ev_embed_sweep (EV_P_ ev_embed *w)
		2067	{
		2068	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2069	}
		2070
		2071	static void
		2072	embed_cb (EV_P_ ev_io *io, int revents)
		2073	{
		2074	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		2075
		2076	if (ev_cb (w))
		2077	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2078	else
		2079	ev_embed_sweep (loop, w);
		2080	}
		2081
		2082	void
		2083	ev_embed_start (EV_P_ ev_embed *w)
		2084	{
		2085	if (expect_false (ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	struct ev_loop *loop = w->loop;
		2090	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2091	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2092	}
		2093
		2094	ev_set_priority (&w->io, ev_priority (w));
		2095	ev_io_start (EV_A_ &w->io);
		2096
		2097	ev_start (EV_A_ (W)w, 1);
		2098	}
		2099
		2100	void
		2101	ev_embed_stop (EV_P_ ev_embed *w)
		2102	{
		2103	ev_clear_pending (EV_A_ (W)w);
		2104	if (expect_false (!ev_is_active (w)))
		2105	return;
		2106
		2107	ev_io_stop (EV_A_ &w->io);
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	}
		2111	#endif
		2112
		2113	#if EV_FORK_ENABLE
		2114	void
		2115	ev_fork_start (EV_P_ ev_fork *w)
		2116	{
		2117	if (expect_false (ev_is_active (w)))
		2118	return;
		2119
		2120	ev_start (EV_A_ (W)w, ++forkcnt);
		2121	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2122	forks [forkcnt - 1] = w;
		2123	}
		2124
		2125	void
		2126	ev_fork_stop (EV_P_ ev_fork *w)
		2127	{
		2128	ev_clear_pending (EV_A_ (W)w);
		2129	if (expect_false (!ev_is_active (w)))
		2130	return;
		2131
		2132	{
		2133	int active = ((W)w)->active;
		2134	forks [active - 1] = forks [--forkcnt];
		2135	((W)forks [active - 1])->active = active;
		2136	}
		2137
		2138	ev_stop (EV_A_ (W)w);
		2139	}
		2140	#endif
		2141
1532	/*****************************************************************************/	2142	/*****************************************************************************/
1533		2143
1534	struct ev_once	2144	struct ev_once
1535	{	2145	{
1536	struct ev_io io;	2146	ev_io io;
1537	struct ev_timer to;	2147	ev_timer to;
1538	void (cb)(int revents, void arg);	2148	void (cb)(int revents, void arg);
1539	void *arg;	2149	void *arg;
1540	};	2150	};
1541		2151
1542	static void	2152	static void
…		…
1551		2161
1552	cb (revents, arg);	2162	cb (revents, arg);
1553	}	2163	}
1554		2164
1555	static void	2165	static void
1556	once_cb_io (EV_P_ struct ev_io *w, int revents)	2166	once_cb_io (EV_P_ ev_io *w, int revents)
1557	{	2167	{
1558	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	2168	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1559	}	2169	}
1560		2170
1561	static void	2171	static void
1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2172	once_cb_to (EV_P_ ev_timer *w, int revents)
1563	{	2173	{
1564	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	2174	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1565	}	2175	}
1566		2176
1567	void	2177	void
1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	2178	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1569	{	2179	{
1570	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	2180	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1571		2181
1572	if (!once)	2182	if (expect_false (!once))
		2183	{
1573	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	2184	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1574	else	2185	return;
1575	{	2186	}
		2187
1576	once->cb = cb;	2188	once->cb = cb;
1577	once->arg = arg;	2189	once->arg = arg;
1578		2190
1579	ev_init (&once->io, once_cb_io);	2191	ev_init (&once->io, once_cb_io);
1580	if (fd >= 0)	2192	if (fd >= 0)
1581	{	2193	{
1582	ev_io_set (&once->io, fd, events);	2194	ev_io_set (&once->io, fd, events);
1583	ev_io_start (EV_A_ &once->io);	2195	ev_io_start (EV_A_ &once->io);
1584	}	2196	}
1585		2197
1586	ev_init (&once->to, once_cb_to);	2198	ev_init (&once->to, once_cb_to);
1587	if (timeout >= 0.)	2199	if (timeout >= 0.)
1588	{	2200	{
1589	ev_timer_set (&once->to, timeout, 0.);	2201	ev_timer_set (&once->to, timeout, 0.);
1590	ev_timer_start (EV_A_ &once->to);	2202	ev_timer_start (EV_A_ &once->to);
1591	}
1592	}	2203	}
1593	}	2204	}
1594		2205
		2206	#ifdef __cplusplus
		2207	}
		2208	#endif
		2209

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Comparing libev/ev.c (file contents): Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs. Revision 1.160 by root, Sat Dec 1 22:57:20 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.160 by root, Sat Dec 1 22:57:20 2007 UTC