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

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.152 by root, Wed Nov 28 11:15:55 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
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# include <sys/wait.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
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		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
124	/**/	219	/**/
125		220
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#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) */	222	#define MAX_BLOCKTIME 59.743 /* 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 */	223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
130
131	#include "ev.h"
132		224
133	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
134	# 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
135	# 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
136	#else	235	#else
137	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
138	# define inline static	238	# define inline_size static
		239	# define noinline
139	#endif	240	#endif
140		241
141	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
143		244
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
147	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
150		254
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		256
153	#if WIN32	257	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	258	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	259	#endif
211		260
212	/*****************************************************************************/	261	/*****************************************************************************/
213		262
214	static void (syserr_cb)(const char msg);	263	static void (syserr_cb)(const char msg);
215		264
		265	void
216	void ev_set_syserr_cb (void (cb)(const char msg))	266	ev_set_syserr_cb (void (cb)(const char msg))
217	{	267	{
218	syserr_cb = cb;	268	syserr_cb = cb;
219	}	269	}
220		270
221	static void	271	static void noinline
222	syserr (const char *msg)	272	syserr (const char *msg)
223	{	273	{
224	if (!msg)	274	if (!msg)
225	msg = "(libev) system error";	275	msg = "(libev) system error";
226		276
…		…
231	perror (msg);	281	perror (msg);
232	abort ();	282	abort ();
233	}	283	}
234	}	284	}
235		285
236	static void (alloc)(void *ptr, long size);	286	static void (alloc)(void *ptr, size_t size) = realloc;
237		287
		288	void
238	void ev_set_allocator (void (cb)(void *ptr, long size))	289	ev_set_allocator (void (cb)(void *ptr, size_t size))
239	{	290	{
240	alloc = cb;	291	alloc = cb;
241	}	292	}
242		293
243	static void *	294	inline_speed void *
244	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, size_t size)
245	{	296	{
246	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc (ptr, size);
247		298
248	if (!ptr && size)	299	if (!ptr && size)
249	{	300	{
250	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
251	abort ();	302	abort ();
252	}	303	}
253		304
254	return ptr;	305	return ptr;
255	}	306	}
…		…
262	typedef struct	313	typedef struct
263	{	314	{
264	WL head;	315	WL head;
265	unsigned char events;	316	unsigned char events;
266	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
267	} ANFD;	321	} ANFD;
268		322
269	typedef struct	323	typedef struct
270	{	324	{
271	W w;	325	W w;
272	int events;	326	int events;
273	} ANPENDING;	327	} ANPENDING;
274		328
		329	typedef struct
		330	{
		331	#if EV_USE_INOTIFY
		332	WL head;
		333	#endif
		334	} ANFS;
		335
275	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
276		337
277	struct ev_loop	338	struct ev_loop
278	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	343	#include "ev_vars.h"
281	};
282	# undef VAR	344	#undef VAR
		345	};
283	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
284		350
285	#else	351	#else
286		352
		353	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	355	#include "ev_vars.h"
289	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
290		359
291	#endif	360	#endif
292		361
293	/*****************************************************************************/	362	/*****************************************************************************/
294		363
295	inline ev_tstamp	364	ev_tstamp
296	ev_time (void)	365	ev_time (void)
297	{	366	{
298	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
299	struct timespec ts;	368	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
304	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
305	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
306	#endif	375	#endif
307	}	376	}
308		377
309	inline ev_tstamp	378	ev_tstamp inline_size
310	get_clock (void)	379	get_clock (void)
311	{	380	{
312	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
313	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
314	{	383	{
…		…
319	#endif	388	#endif
320		389
321	return ev_time ();	390	return ev_time ();
322	}	391	}
323		392
		393	#if EV_MULTIPLICITY
324	ev_tstamp	394	ev_tstamp
325	ev_now (EV_P)	395	ev_now (EV_P)
326	{	396	{
327	return rt_now;	397	return ev_rt_now;
328	}	398	}
		399	#endif
329		400
330	#define array_roundsize(base,n) ((n) \| 4 & ~3)	401	#define array_roundsize(type,n) (((n) \| 4) & ~3)
331		402
332	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
334	{ \	405	{ \
335	int newcnt = cur; \	406	int newcnt = cur; \
336	do \	407	do \
337	{ \	408	{ \
338	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
339	} \	410	} \
340	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
341	\	412	\
342	base = ev_realloc (base, sizeof (base) (newcnt)); \	413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
343	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
344	cur = newcnt; \	415	cur = newcnt; \
345	}	416	}
346		417
347	#define array_slim(stem) \	418	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	420	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (base) (stem ## max)); \	422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
353	}	424	}
354
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		425
360	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
361	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;
362		428
363	/*****************************************************************************/	429	/*****************************************************************************/
364		430
365	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
366	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
367	{	461	{
368	while (count--)	462	while (count--)
369	{	463	{
370	base->head = 0;	464	base->head = 0;
…		…
373		467
374	++base;	468	++base;
375	}	469	}
376	}	470	}
377		471
378	static void	472	void inline_speed
379	event (EV_P_ W w, int events)
380	{
381	if (w->pending)
382	{
383	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
384	return;
385	}
386
387	w->pending = ++pendingcnt [ABSPRI (w)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389	pendings [ABSPRI (w)][w->pending - 1].w = w;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;
391	}
392
393	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{
396	int i;
397
398	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);
400	}
401
402	static void
403	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
404	{	474	{
405	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	476	ev_io *w;
407		477
408	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)
409	{	479	{
410	int ev = w->events & events;	480	int ev = w->events & revents;
411		481
412	if (ev)	482	if (ev)
413	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
414	}	484	}
415	}	485	}
416		486
417	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
418		492
419	static void	493	void inline_size
420	fd_reify (EV_P)	494	fd_reify (EV_P)
421	{	495	{
422	int i;	496	int i;
423		497
424	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
425	{	499	{
426	int fd = fdchanges [i];	500	int fd = fdchanges [i];
427	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
428	struct ev_io *w;	502	ev_io *w;
429		503
430	int events = 0;	504	int events = 0;
431		505
432	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)
433	events \|= w->events;	507	events \|= w->events;
434		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
435	anfd->reify = 0;	518	anfd->reify = 0;
436		519
437	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	521	anfd->events = events;
439	}	522	}
440		523
441	fdchangecnt = 0;	524	fdchangecnt = 0;
442	}	525	}
443		526
444	static void	527	void inline_size
445	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
446	{	529	{
447	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
448	return;	531	return;
449		532
450	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
451		534
452	++fdchangecnt;	535	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
455	}	538	}
456		539
457	static void	540	void inline_speed
458	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
459	{	542	{
460	struct ev_io *w;	543	ev_io *w;
461		544
462	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
463	{	546	{
464	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
465	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);
466	}	549	}
467	}	550	}
468		551
469	static int	552	int inline_size
470	fd_valid (int fd)	553	fd_valid (int fd)
471	{	554	{
472	#ifdef WIN32	555	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
474	#else	557	#else
475	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
476	#endif	559	#endif
477	}	560	}
478		561
479	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
480	static void	563	static void noinline
481	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
482	{	565	{
483	int fd;	566	int fd;
484		567
485	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
487	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
488	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
489	}	572	}
490		573
491	/* 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 */
492	static void	575	static void noinline
493	fd_enomem (EV_P)	576	fd_enomem (EV_P)
494	{	577	{
495	int fd;	578	int fd;
496		579
497	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
500	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
501	return;	584	return;
502	}	585	}
503	}	586	}
504		587
505	/* 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 */
506	static void	589	static void noinline
507	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
508	{	591	{
509	int fd;	592	int fd;
510		593
511	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
517	}	600	}
518	}	601	}
519		602
520	/*****************************************************************************/	603	/*****************************************************************************/
521		604
522	static void	605	void inline_speed
523	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
524	{	607	{
525	WT w = heap [k];	608	WT w = heap [k];
526		609
527	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
534	heap [k] = w;	617	heap [k] = w;
535	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
536		619
537	}	620	}
538		621
539	static void	622	void inline_speed
540	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
541	{	624	{
542	WT w = heap [k];	625	WT w = heap [k];
543		626
544	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
558		641
559	heap [k] = w;	642	heap [k] = w;
560	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
561	}	644	}
562		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
		651	}
		652
563	/*****************************************************************************/	653	/*****************************************************************************/
564		654
565	typedef struct	655	typedef struct
566	{	656	{
567	WL head;	657	WL head;
…		…
571	static ANSIG *signals;	661	static ANSIG *signals;
572	static int signalmax;	662	static int signalmax;
573		663
574	static int sigpipe [2];	664	static int sigpipe [2];
575	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
576	static struct ev_io sigev;	666	static ev_io sigev;
577		667
578	static void	668	void inline_size
579	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
580	{	670	{
581	while (count--)	671	while (count--)
582	{	672	{
583	base->head = 0;	673	base->head = 0;
…		…
588	}	678	}
589		679
590	static void	680	static void
591	sighandler (int signum)	681	sighandler (int signum)
592	{	682	{
593	#if WIN32	683	#if _WIN32
594	signal (signum, sighandler);	684	signal (signum, sighandler);
595	#endif	685	#endif
596		686
597	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
598		688
…		…
603	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	694	errno = old_errno;
605	}	695	}
606	}	696	}
607		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 \|\| signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
608	static void	718	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
610	{	720	{
611	WL w;
612	int signum;	721	int signum;
613		722
614	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	724	gotsig = 0;
616		725
617	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
619	{	728	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;
621
622	for (w = signals [signum].head; w; w = w->next)
623	event (EV_A_ (W)w, EV_SIGNAL);
624	}
625	}	729	}
626		730
627	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
628	siginit (EV_P)	744	siginit (EV_P)
629	{	745	{
630	#ifndef WIN32	746	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		748
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	752	}
643		753
644	/*****************************************************************************/	754	/*****************************************************************************/
645		755
646	static struct ev_child *childs [PID_HASHSIZE];	756	static ev_child *childs [EV_PID_HASHSIZE];
647		757
648	#ifndef WIN32	758	#ifndef _WIN32
649		759
650	static struct ev_signal childev;	760	static ev_signal childev;
651		761
652	#ifndef WCONTINUED	762	void inline_speed
653	# define WCONTINUED 0
654	#endif
655
656	static void
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658	{	764	{
659	struct ev_child *w;	765	ev_child *w;
660		766
661	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
662	if (w->pid == pid \|\| !w->pid)	768	if (w->pid == pid \|\| !w->pid)
663	{	769	{
664	ev_priority (w) = ev_priority (sw); /* need to do it now */	770	ev_priority (w) = ev_priority (sw); /* need to do it now */
665	w->rpid = pid;	771	w->rpid = pid;
666	w->rstatus = status;	772	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	774	}
669	}	775	}
670		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
671	static void	781	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
673	{	783	{
674	int pid, status;	784	int pid, status;
675		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
677	{	788	if (!WCONTINUED
		789	\|\| errno != EINVAL
		790	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		791	return;
		792
678	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		796
681	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}
684	}	800	}
685		801
686	#endif	802	#endif
687		803
688	/*****************************************************************************/	804	/*****************************************************************************/
689		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
690	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
692	#endif	811	#endif
693	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
711	{	830	{
712	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
713	}	832	}
714		833
715	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	835	int inline_size
717	enable_secure (void)	836	enable_secure (void)
718	{	837	{
719	#ifdef WIN32	838	#ifdef _WIN32
720	return 0;	839	return 0;
721	#else	840	#else
722	return getuid () != geteuid ()	841	return getuid () != geteuid ()
723	\|\| getgid () != getegid ();	842	\|\| getgid () != getegid ();
724	#endif	843	#endif
725	}	844	}
726		845
727	int	846	unsigned int
728	ev_method (EV_P)	847	ev_supported_backends (void)
729	{	848	{
730	return method;	849	unsigned int flags = 0;
731	}
732		850
733	static void	851	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
734	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
735	{	862	{
736	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	\| EVBACKEND_KQUEUE
		883	\| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
737	{	896	{
738	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
739	{	898	{
740	struct timespec ts;	899	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	901	have_monotonic = 1;
743	}	902	}
744	#endif	903	#endif
745		904
746	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	906	mn_now = get_clock ();
748	now_floor = mn_now;	907	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
750		909
751	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		914
757	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags \|= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
758	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	926	#endif
761	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	929	#endif
764	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	932	#endif
767	#if EV_USE_POLL	933	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	935	#endif
770	#if EV_USE_SELECT	936	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	938	#endif
773		939
774	ev_watcher_init (&sigev, sigcb);	940	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	941	ev_set_priority (&sigev, EV_MAXPRI);
776	}	942	}
777	}	943	}
778		944
779	void	945	static void noinline
780	loop_destroy (EV_P)	946	loop_destroy (EV_P)
781	{	947	{
782	int i;	948	int i;
783		949
784	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	960	#endif
787	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	963	#endif
790	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	966	#endif
793	#if EV_USE_POLL	967	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	969	#endif
796	#if EV_USE_SELECT	970	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	972	#endif
799		973
800	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	975	array_free (pending, [i]);
802		976
803	/* have to use the microsoft-never-gets-it-right macro */	977	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	978	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	979	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	980	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	981	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	982	#endif
809	array_free_microshit (check);	983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
810		986
811	method = 0;	987	backend = 0;
812	}	988	}
813		989
814	static void	990	void inline_size
815	loop_fork (EV_P)	991	loop_fork (EV_P)
816	{	992	{
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		998	#endif
817	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif
820	#if EV_USE_KQUEUE
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
822	#endif	1001	#endif
823		1002
824	if (ev_is_active (&sigev))	1003	if (ev_is_active (&sigev))
825	{	1004	{
826	/* default loop */	1005	/* default loop */
…		…
828	ev_ref (EV_A);	1007	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	1008	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	1009	close (sigpipe [0]);
831	close (sigpipe [1]);	1010	close (sigpipe [1]);
832		1011
833	while (ev_pipe (sigpipe))	1012	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	1013	syserr ("(libev) error creating pipe");
835		1014
836	siginit (EV_A);	1015	siginit (EV_A);
837	}	1016	}
838		1017
839	postfork = 0;	1018	postfork = 0;
840	}	1019	}
841		1020
842	#if EV_MULTIPLICITY	1021	#if EV_MULTIPLICITY
843	struct ev_loop *	1022	struct ev_loop *
844	ev_loop_new (int methods)	1023	ev_loop_new (unsigned int flags)
845	{	1024	{
846	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1025	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
847		1026
848	memset (loop, 0, sizeof (struct ev_loop));	1027	memset (loop, 0, sizeof (struct ev_loop));
849		1028
850	loop_init (EV_A_ methods);	1029	loop_init (EV_A_ flags);
851		1030
852	if (ev_method (EV_A))	1031	if (ev_backend (EV_A))
853	return loop;	1032	return loop;
854		1033
855	return 0;	1034	return 0;
856	}	1035	}
857		1036
…		…
869	}	1048	}
870		1049
871	#endif	1050	#endif
872		1051
873	#if EV_MULTIPLICITY	1052	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	1053	struct ev_loop *
		1054	ev_default_loop_init (unsigned int flags)
878	#else	1055	#else
879	static int default_loop;
880
881	int	1056	int
		1057	ev_default_loop (unsigned int flags)
882	#endif	1058	#endif
883	ev_default_loop (int methods)
884	{	1059	{
885	if (sigpipe [0] == sigpipe [1])	1060	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	1061	if (pipe (sigpipe))
887	return 0;	1062	return 0;
888		1063
889	if (!default_loop)	1064	if (!ev_default_loop_ptr)
890	{	1065	{
891	#if EV_MULTIPLICITY	1066	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1067	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1068	#else
894	default_loop = 1;	1069	ev_default_loop_ptr = 1;
895	#endif	1070	#endif
896		1071
897	loop_init (EV_A_ methods);	1072	loop_init (EV_A_ flags);
898		1073
899	if (ev_method (EV_A))	1074	if (ev_backend (EV_A))
900	{	1075	{
901	siginit (EV_A);	1076	siginit (EV_A);
902		1077
903	#ifndef WIN32	1078	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1079	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1080	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1081	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1082	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1083	#endif
909	}	1084	}
910	else	1085	else
911	default_loop = 0;	1086	ev_default_loop_ptr = 0;
912	}	1087	}
913		1088
914	return default_loop;	1089	return ev_default_loop_ptr;
915	}	1090	}
916		1091
917	void	1092	void
918	ev_default_destroy (void)	1093	ev_default_destroy (void)
919	{	1094	{
920	#if EV_MULTIPLICITY	1095	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1096	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1097	#endif
923		1098
924	#ifndef WIN32	1099	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1100	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1101	ev_signal_stop (EV_A_ &childev);
927	#endif	1102	#endif
928		1103
929	ev_ref (EV_A); /* signal watcher */	1104	ev_ref (EV_A); /* signal watcher */
…		…
937		1112
938	void	1113	void
939	ev_default_fork (void)	1114	ev_default_fork (void)
940	{	1115	{
941	#if EV_MULTIPLICITY	1116	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1117	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1118	#endif
944		1119
945	if (method)	1120	if (backend)
946	postfork = 1;	1121	postfork = 1;
947	}	1122	}
948		1123
949	/*****************************************************************************/	1124	/*****************************************************************************/
950		1125
951	static void	1126	int inline_size
		1127	any_pending (EV_P)
		1128	{
		1129	int pri;
		1130
		1131	for (pri = NUMPRI; pri--; )
		1132	if (pendingcnt [pri])
		1133	return 1;
		1134
		1135	return 0;
		1136	}
		1137
		1138	void inline_speed
952	call_pending (EV_P)	1139	call_pending (EV_P)
953	{	1140	{
954	int pri;	1141	int pri;
955		1142
956	for (pri = NUMPRI; pri--; )	1143	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1144	while (pendingcnt [pri])
958	{	1145	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1146	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1147
961	if (p->w)	1148	if (expect_true (p->w))
962	{	1149	{
		1150	/assert (("non-pending watcher on pending list", p->w->pending));/
		1151
963	p->w->pending = 0;	1152	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1153	EV_CB_INVOKE (p->w, p->events);
965	}	1154	}
966	}	1155	}
967	}	1156	}
968		1157
969	static void	1158	void inline_size
970	timers_reify (EV_P)	1159	timers_reify (EV_P)
971	{	1160	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1161	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1162	{
974	struct ev_timer *w = timers [0];	1163	ev_timer *w = timers [0];
975		1164
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1165	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
977		1166
978	/* first reschedule or stop timer */	1167	/* first reschedule or stop timer */
979	if (w->repeat)	1168	if (w->repeat)
980	{	1169	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1170	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1171
982	((WT)w)->at = mn_now + w->repeat;	1172	((WT)w)->at += w->repeat;
		1173	if (((WT)w)->at < mn_now)
		1174	((WT)w)->at = mn_now;
		1175
983	downheap ((WT *)timers, timercnt, 0);	1176	downheap ((WT *)timers, timercnt, 0);
984	}	1177	}
985	else	1178	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1180
988	event (EV_A_ (W)w, EV_TIMEOUT);	1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1182	}
990	}	1183	}
991		1184
992	static void	1185	#if EV_PERIODIC_ENABLE
		1186	void inline_size
993	periodics_reify (EV_P)	1187	periodics_reify (EV_P)
994	{	1188	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1190	{
997	struct ev_periodic *w = periodics [0];	1191	ev_periodic *w = periodics [0];
998		1192
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1193	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1000		1194
1001	/* first reschedule or stop timer */	1195	/* first reschedule or stop timer */
1002	if (w->interval)	1196	if (w->reschedule_cb)
1003	{	1197	{
		1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1200	downheap ((WT *)periodics, periodiccnt, 0);
		1201	}
		1202	else if (w->interval)
		1203	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1205	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1206	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1207	}
1008	else	1208	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1210
1011	event (EV_A_ (W)w, EV_PERIODIC);	1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1212	}
1013	}	1213	}
1014		1214
1015	static void	1215	static void noinline
1016	periodics_reschedule (EV_P)	1216	periodics_reschedule (EV_P)
1017	{	1217	{
1018	int i;	1218	int i;
1019		1219
1020	/* adjust periodics after time jump */	1220	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1221	for (i = 0; i < periodiccnt; ++i)
1022	{	1222	{
1023	struct ev_periodic *w = periodics [i];	1223	ev_periodic *w = periodics [i];
1024		1224
		1225	if (w->reschedule_cb)
		1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1227	else if (w->interval)
1026	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1028
1029	if (fabs (diff) >= 1e-4)
1030	{
1031	ev_periodic_stop (EV_A_ w);
1032	ev_periodic_start (EV_A_ w);
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}
1036	}
1037	}	1229	}
1038	}
1039		1230
1040	inline int	1231	/* now rebuild the heap */
		1232	for (i = periodiccnt >> 1; i--; )
		1233	downheap ((WT *)periodics, periodiccnt, i);
		1234	}
		1235	#endif
		1236
		1237	int inline_size
1041	time_update_monotonic (EV_P)	1238	time_update_monotonic (EV_P)
1042	{	1239	{
1043	mn_now = get_clock ();	1240	mn_now = get_clock ();
1044		1241
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1243	{
1047	rt_now = rtmn_diff + mn_now;	1244	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1245	return 0;
1049	}	1246	}
1050	else	1247	else
1051	{	1248	{
1052	now_floor = mn_now;	1249	now_floor = mn_now;
1053	rt_now = ev_time ();	1250	ev_rt_now = ev_time ();
1054	return 1;	1251	return 1;
1055	}	1252	}
1056	}	1253	}
1057		1254
1058	static void	1255	void inline_size
1059	time_update (EV_P)	1256	time_update (EV_P)
1060	{	1257	{
1061	int i;	1258	int i;
1062		1259
1063	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
…		…
1065	{	1262	{
1066	if (time_update_monotonic (EV_A))	1263	if (time_update_monotonic (EV_A))
1067	{	1264	{
1068	ev_tstamp odiff = rtmn_diff;	1265	ev_tstamp odiff = rtmn_diff;
1069		1266
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1267	/* loop a few times, before making important decisions.
		1268	* on the choice of "4": one iteration isn't enough,
		1269	* in case we get preempted during the calls to
		1270	* ev_time and get_clock. a second call is almost guarenteed
		1271	* to succeed in that case, though. and looping a few more times
		1272	* doesn't hurt either as we only do this on time-jumps or
		1273	* in the unlikely event of getting preempted here.
		1274	*/
		1275	for (i = 4; --i; )
1071	{	1276	{
1072	rtmn_diff = rt_now - mn_now;	1277	rtmn_diff = ev_rt_now - mn_now;
1073		1278
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1280	return; /* all is well */
1076		1281
1077	rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1283	mn_now = get_clock ();
1079	now_floor = mn_now;	1284	now_floor = mn_now;
1080	}	1285	}
1081		1286
		1287	# if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1288	periodics_reschedule (EV_A);
		1289	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1290	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1292	}
1086	}	1293	}
1087	else	1294	else
1088	#endif	1295	#endif
1089	{	1296	{
1090	rt_now = ev_time ();	1297	ev_rt_now = ev_time ();
1091		1298
1092	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1299	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{	1300	{
		1301	#if EV_PERIODIC_ENABLE
1094	periodics_reschedule (EV_A);	1302	periodics_reschedule (EV_A);
		1303	#endif
1095		1304
1096	/* adjust timers. this is easy, as the offset is the same for all */	1305	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)	1306	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1307	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1308	}
1100		1309
1101	mn_now = rt_now;	1310	mn_now = ev_rt_now;
1102	}	1311	}
1103	}	1312	}
1104		1313
1105	void	1314	void
1106	ev_ref (EV_P)	1315	ev_ref (EV_P)
…		…
1117	static int loop_done;	1326	static int loop_done;
1118		1327
1119	void	1328	void
1120	ev_loop (EV_P_ int flags)	1329	ev_loop (EV_P_ int flags)
1121	{	1330	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1332	? EVUNLOOP_ONE
		1333	: EVUNLOOP_CANCEL;
1124		1334
1125	do	1335	while (activecnt)
1126	{	1336	{
		1337	/* we might have forked, so reify kernel state if necessary */
		1338	#if EV_FORK_ENABLE
		1339	if (expect_false (postfork))
		1340	if (forkcnt)
		1341	{
		1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1343	call_pending (EV_A);
		1344	}
		1345	#endif
		1346
1127	/* queue check watchers (and execute them) */	1347	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1348	if (expect_false (preparecnt))
1129	{	1349	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131	call_pending (EV_A);	1351	call_pending (EV_A);
…		…
1137		1357
1138	/* update fd-related kernel structures */	1358	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1359	fd_reify (EV_A);
1140		1360
1141	/* calculate blocking time */	1361	/* calculate blocking time */
		1362	{
		1363	double block;
1142		1364
1143	/* we only need this for !monotonic clockor timers, but as we basically	1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1144	always have timers, we just calculate it always */	1366	block = 0.; /* do not block at all */
		1367	else
		1368	{
		1369	/* update time to cancel out callback processing overhead */
1145	#if EV_USE_MONOTONIC	1370	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1371	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1372	time_update_monotonic (EV_A);
1148	else	1373	else
1149	#endif	1374	#endif
1150	{	1375	{
1151	rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1377	mn_now = ev_rt_now;
1153	}	1378	}
1154		1379
1155	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1380	block = MAX_BLOCKTIME;
1160		1381
1161	if (timercnt)	1382	if (timercnt)
1162	{	1383	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1385	if (block > to) block = to;
1165	}	1386	}
1166		1387
		1388	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1389	if (periodiccnt)
1168	{	1390	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1392	if (block > to) block = to;
1171	}	1393	}
		1394	#endif
1172		1395
1173	if (block < 0.) block = 0.;	1396	if (expect_false (block < 0.)) block = 0.;
1174	}	1397	}
1175		1398
1176	method_poll (EV_A_ block);	1399	backend_poll (EV_A_ block);
		1400	}
1177		1401
1178	/* update rt_now, do magic */	1402	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1403	time_update (EV_A);
1180		1404
1181	/* queue pending timers and reschedule them */	1405	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1406	timers_reify (EV_A); /* relative timers called last */
		1407	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1408	periodics_reify (EV_A); /* absolute timers called first */
		1409	#endif
1184		1410
1185	/* queue idle watchers unless io or timers are pending */	1411	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1412	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1414
1189	/* queue check watchers, to be executed first */	1415	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1416	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1418
1193	call_pending (EV_A);	1419	call_pending (EV_A);
1194	}
1195	while (activecnt && !loop_done);
1196		1420
1197	if (loop_done != 2)	1421	if (expect_false (loop_done))
1198	loop_done = 0;	1422	break;
		1423	}
		1424
		1425	if (loop_done == EVUNLOOP_ONE)
		1426	loop_done = EVUNLOOP_CANCEL;
1199	}	1427	}
1200		1428
1201	void	1429	void
1202	ev_unloop (EV_P_ int how)	1430	ev_unloop (EV_P_ int how)
1203	{	1431	{
1204	loop_done = how;	1432	loop_done = how;
1205	}	1433	}
1206		1434
1207	/*****************************************************************************/	1435	/*****************************************************************************/
1208		1436
1209	inline void	1437	void inline_size
1210	wlist_add (WL *head, WL elem)	1438	wlist_add (WL *head, WL elem)
1211	{	1439	{
1212	elem->next = *head;	1440	elem->next = *head;
1213	*head = elem;	1441	*head = elem;
1214	}	1442	}
1215		1443
1216	inline void	1444	void inline_size
1217	wlist_del (WL *head, WL elem)	1445	wlist_del (WL *head, WL elem)
1218	{	1446	{
1219	while (*head)	1447	while (*head)
1220	{	1448	{
1221	if (*head == elem)	1449	if (*head == elem)
…		…
1226		1454
1227	head = &(*head)->next;	1455	head = &(*head)->next;
1228	}	1456	}
1229	}	1457	}
1230		1458
1231	inline void	1459	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1460	ev_clear_pending (EV_P_ W w)
1233	{	1461	{
1234	if (w->pending)	1462	if (w->pending)
1235	{	1463	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1465	w->pending = 0;
1238	}	1466	}
1239	}	1467	}
1240		1468
1241	inline void	1469	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1470	ev_start (EV_P_ W w, int active)
1243	{	1471	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246		1474
1247	w->active = active;	1475	w->active = active;
1248	ev_ref (EV_A);	1476	ev_ref (EV_A);
1249	}	1477	}
1250		1478
1251	inline void	1479	void inline_size
1252	ev_stop (EV_P_ W w)	1480	ev_stop (EV_P_ W w)
1253	{	1481	{
1254	ev_unref (EV_A);	1482	ev_unref (EV_A);
1255	w->active = 0;	1483	w->active = 0;
1256	}	1484	}
1257		1485
1258	/*****************************************************************************/	1486	/*****************************************************************************/
1259		1487
1260	void	1488	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1489	ev_io_start (EV_P_ ev_io *w)
1262	{	1490	{
1263	int fd = w->fd;	1491	int fd = w->fd;
1264		1492
1265	if (ev_is_active (w))	1493	if (expect_false (ev_is_active (w)))
1266	return;	1494	return;
1267		1495
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1496	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1497
1270	ev_start (EV_A_ (W)w, 1);	1498	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1501
1274	fd_change (EV_A_ fd);	1502	fd_change (EV_A_ fd);
1275	}	1503	}
1276		1504
1277	void	1505	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1506	ev_io_stop (EV_P_ ev_io *w)
1279	{	1507	{
1280	ev_clear_pending (EV_A_ (W)w);	1508	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1509	if (expect_false (!ev_is_active (w)))
1282	return;	1510	return;
		1511
		1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1513
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1515	ev_stop (EV_A_ (W)w);
1286		1516
1287	fd_change (EV_A_ w->fd);	1517	fd_change (EV_A_ w->fd);
1288	}	1518	}
1289		1519
1290	void	1520	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1521	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1522	{
1293	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1294	return;	1524	return;
1295		1525
1296	((WT)w)->at += mn_now;	1526	((WT)w)->at += mn_now;
1297		1527
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1529
1300	ev_start (EV_A_ (W)w, ++timercnt);	1530	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1532	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1533	upheap ((WT *)timers, timercnt - 1);
1304		1534
		1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
		1536	}
		1537
		1538	void
		1539	ev_timer_stop (EV_P_ ev_timer *w)
		1540	{
		1541	ev_clear_pending (EV_A_ (W)w);
		1542	if (expect_false (!ev_is_active (w)))
		1543	return;
		1544
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}
1307		1546
1308	void	1547	{
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1548	int active = ((W)w)->active;
1310	{
1311	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))
1313	return;
1314		1549
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	if (expect_true (--active < --timercnt))
1316
1317	if (((W)w)->active < timercnt--)
1318	{	1551	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1552	timers [active] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1553	adjustheap ((WT *)timers, timercnt, active);
1321	}	1554	}
		1555	}
1322		1556
1323	((WT)w)->at = w->repeat;	1557	((WT)w)->at -= mn_now;
1324		1558
1325	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1326	}	1560	}
1327		1561
1328	void	1562	void
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1563	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1564	{
1331	if (ev_is_active (w))	1565	if (ev_is_active (w))
1332	{	1566	{
1333	if (w->repeat)	1567	if (w->repeat)
1334	{	1568	{
1335	((WT)w)->at = mn_now + w->repeat;	1569	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1571	}
1338	else	1572	else
1339	ev_timer_stop (EV_A_ w);	1573	ev_timer_stop (EV_A_ w);
1340	}	1574	}
1341	else if (w->repeat)	1575	else if (w->repeat)
		1576	{
		1577	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1578	ev_timer_start (EV_A_ w);
		1579	}
1343	}	1580	}
1344		1581
		1582	#if EV_PERIODIC_ENABLE
1345	void	1583	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1584	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1585	{
1348	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1349	return;	1587	return;
1350		1588
		1589	if (w->reschedule_cb)
		1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1591	else if (w->interval)
		1592	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1594	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1596	}
1356		1597
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1598	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1600	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1601	upheap ((WT *)periodics, periodiccnt - 1);
1361		1602
		1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
		1604	}
		1605
		1606	void
		1607	ev_periodic_stop (EV_P_ ev_periodic *w)
		1608	{
		1609	ev_clear_pending (EV_A_ (W)w);
		1610	if (expect_false (!ev_is_active (w)))
		1611	return;
		1612
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}
1364		1614
1365	void	1615	{
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1616	int active = ((W)w)->active;
1367	{
1368	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))
1370	return;
1371		1617
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	if (expect_true (--active < --periodiccnt))
1373
1374	if (((W)w)->active < periodiccnt--)
1375	{	1619	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1620	periodics [active] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1621	adjustheap ((WT *)periodics, periodiccnt, active);
1378	}	1622	}
		1623	}
1379		1624
1380	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1381	}	1626	}
1382		1627
1383	void	1628	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1629	ev_periodic_again (EV_P_ ev_periodic *w)
1385	{	1630	{
1386	if (ev_is_active (w))	1631	/* TODO: use adjustheap and recalculation */
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));
1391	idles [idlecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	idles [((W)w)->active - 1] = idles [--idlecnt];
1402	ev_stop (EV_A_ (W)w);	1632	ev_periodic_stop (EV_A_ w);
		1633	ev_periodic_start (EV_A_ w);
1403	}	1634	}
1404		1635	#endif
1405	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));
1413	prepares [preparecnt - 1] = w;
1414	}
1415
1416	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426
1427	void
1428	ev_check_start (EV_P_ struct ev_check *w)
1429	{
1430	if (ev_is_active (w))
1431	return;
1432
1433	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));
1435	checks [checkcnt - 1] = w;
1436	}
1437
1438	void
1439	ev_check_stop (EV_P_ struct ev_check *w)
1440	{
1441	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))
1443	return;
1444
1445	checks [((W)w)->active - 1] = checks [--checkcnt];
1446	ev_stop (EV_A_ (W)w);
1447	}
1448		1636
1449	#ifndef SA_RESTART	1637	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1638	# define SA_RESTART 0
1451	#endif	1639	#endif
1452		1640
1453	void	1641	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1642	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1643	{
1456	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1646	#endif
1459	if (ev_is_active (w))	1647	if (expect_false (ev_is_active (w)))
1460	return;	1648	return;
1461		1649
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1651
1464	ev_start (EV_A_ (W)w, 1);	1652	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1655
1468	if (!((WL)w)->next)	1656	if (!((WL)w)->next)
1469	{	1657	{
1470	#if WIN32	1658	#if _WIN32
1471	signal (w->signum, sighandler);	1659	signal (w->signum, sighandler);
1472	#else	1660	#else
1473	struct sigaction sa;	1661	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1662	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1663	sigfillset (&sa.sa_mask);
…		…
1478	#endif	1666	#endif
1479	}	1667	}
1480	}	1668	}
1481		1669
1482	void	1670	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1671	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1672	{
1485	ev_clear_pending (EV_A_ (W)w);	1673	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1674	if (expect_false (!ev_is_active (w)))
1487	return;	1675	return;
1488		1676
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1678	ev_stop (EV_A_ (W)w);
1491		1679
1492	if (!signals [w->signum - 1].head)	1680	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1681	signal (w->signum, SIG_DFL);
1494	}	1682	}
1495		1683
1496	void	1684	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1685	ev_child_start (EV_P_ ev_child *w)
1498	{	1686	{
1499	#if EV_MULTIPLICITY	1687	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1688	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1689	#endif
1502	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1503	return;	1691	return;
1504		1692
1505	ev_start (EV_A_ (W)w, 1);	1693	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507	}	1695	}
1508		1696
1509	void	1697	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1698	ev_child_stop (EV_P_ ev_child *w)
1511	{	1699	{
1512	ev_clear_pending (EV_A_ (W)w);	1700	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1701	if (expect_false (!ev_is_active (w)))
1514	return;	1702	return;
1515		1703
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1705	ev_stop (EV_A_ (W)w);
1518	}	1706	}
1519		1707
		1708	#if EV_STAT_ENABLE
		1709
		1710	# ifdef _WIN32
		1711	# undef lstat
		1712	# define lstat(a,b) _stati64 (a,b)
		1713	# endif
		1714
		1715	#define DEF_STAT_INTERVAL 5.0074891
		1716	#define MIN_STAT_INTERVAL 0.1074891
		1717
		1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1719
		1720	#if EV_USE_INOTIFY
		1721	# define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048)
		1722
		1723	static void noinline
		1724	infy_add (EV_P_ ev_stat *w)
		1725	{
		1726	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);
		1727
		1728	if (w->wd < 0)
		1729	{
		1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1731
		1732	/* monitor some parent directory for speedup hints */
		1733	if (errno == ENOENT \|\| errno == EACCES)
		1734	{
		1735	char path [PATH_MAX];
		1736	strcpy (path, w->path);
		1737
		1738	do
		1739	{
		1740	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1741	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1742
		1743	char *pend = strrchr (path, '/');
		1744
		1745	if (!pend)
		1746	break; /* whoops, no '/', complain to your admin */
		1747
		1748	*pend = 0;
		1749	w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF \| IN_CREATE \| IN_MOVED_TO \| IN_MASK_ADD);
		1750	}
		1751	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1752	}
		1753	}
		1754	else
		1755	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1756
		1757	if (w->wd >= 0)
		1758	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1759	}
		1760
		1761	static void noinline
		1762	infy_del (EV_P_ ev_stat *w)
		1763	{
		1764	WL w_;
		1765	int slot;
		1766	int wd = w->wd;
		1767
		1768	if (wd < 0)
		1769	return;
		1770
		1771	w->wd = -2;
		1772	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1773	wlist_del (&fs_hash [slot].head, (WL)w);
		1774
		1775	/* remove this watcher, if others are watching it, they will rearm */
		1776	inotify_rm_watch (fs_fd, wd);
		1777	}
		1778
		1779	static void noinline
		1780	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1781	{
		1782	if (slot < 0)
		1783	/* overflow, need to check for all hahs slots */
		1784	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1785	infy_wd (EV_A_ slot, wd, ev);
		1786	else
		1787	{
		1788	WL w_;
		1789
		1790	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1791	{
		1792	ev_stat w = (ev_stat )w_;
		1793	w_ = w_->next; /* lets us remove this watcher and all before it */
		1794
		1795	if (w->wd == wd \|\| wd == -1)
		1796	{
		1797	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1798	{
		1799	w->wd = -1;
		1800	infy_add (EV_A_ w); /* re-add, no matter what */
		1801	}
		1802
		1803	stat_timer_cb (EV_P_ &w->timer, 0);
		1804	}
		1805	}
		1806	}
		1807	}
		1808
		1809	static void
		1810	infy_cb (EV_P_ ev_io *w, int revents)
		1811	{
		1812	char buf [EV_INOTIFY_BUFSIZE];
		1813	struct inotify_event ev = (struct inotify_event )buf;
		1814	int ofs;
		1815	int len = read (fs_fd, buf, sizeof (buf));
		1816
		1817	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1818	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1819	}
		1820
		1821	void inline_size
		1822	infy_init (EV_P)
		1823	{
		1824	if (fs_fd != -2)
		1825	return;
		1826
		1827	fs_fd = inotify_init ();
		1828
		1829	if (fs_fd >= 0)
		1830	{
		1831	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1832	ev_set_priority (&fs_w, EV_MAXPRI);
		1833	ev_io_start (EV_A_ &fs_w);
		1834	}
		1835	}
		1836
		1837	#endif
		1838
		1839	void
		1840	ev_stat_stat (EV_P_ ev_stat *w)
		1841	{
		1842	if (lstat (w->path, &w->attr) < 0)
		1843	w->attr.st_nlink = 0;
		1844	else if (!w->attr.st_nlink)
		1845	w->attr.st_nlink = 1;
		1846	}
		1847
		1848	void noinline
		1849	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1850	{
		1851	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1852
		1853	/* we copy this here each the time so that */
		1854	/* prev has the old value when the callback gets invoked */
		1855	w->prev = w->attr;
		1856	ev_stat_stat (EV_A_ w);
		1857
		1858	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1859	{
		1860	#if EV_USE_INOTIFY
		1861	infy_del (EV_A_ w);
		1862	infy_add (EV_A_ w);
		1863	ev_stat_stat (EV_A_ w); /* avoid race... */
		1864	#endif
		1865
		1866	ev_feed_event (EV_A_ w, EV_STAT);
		1867	}
		1868	}
		1869
		1870	void
		1871	ev_stat_start (EV_P_ ev_stat *w)
		1872	{
		1873	if (expect_false (ev_is_active (w)))
		1874	return;
		1875
		1876	/* since we use memcmp, we need to clear any padding data etc. */
		1877	memset (&w->prev, 0, sizeof (ev_statdata));
		1878	memset (&w->attr, 0, sizeof (ev_statdata));
		1879
		1880	ev_stat_stat (EV_A_ w);
		1881
		1882	if (w->interval < MIN_STAT_INTERVAL)
		1883	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1884
		1885	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1886	ev_set_priority (&w->timer, ev_priority (w));
		1887
		1888	#if EV_USE_INOTIFY
		1889	infy_init (EV_A);
		1890
		1891	if (fs_fd >= 0)
		1892	infy_add (EV_A_ w);
		1893	else
		1894	#endif
		1895	ev_timer_start (EV_A_ &w->timer);
		1896
		1897	ev_start (EV_A_ (W)w, 1);
		1898	}
		1899
		1900	void
		1901	ev_stat_stop (EV_P_ ev_stat *w)
		1902	{
		1903	ev_clear_pending (EV_A_ (W)w);
		1904	if (expect_false (!ev_is_active (w)))
		1905	return;
		1906
		1907	#if EV_USE_INOTIFY
		1908	infy_del (EV_A_ w);
		1909	#endif
		1910	ev_timer_stop (EV_A_ &w->timer);
		1911
		1912	ev_stop (EV_A_ (W)w);
		1913	}
		1914	#endif
		1915
		1916	void
		1917	ev_idle_start (EV_P_ ev_idle *w)
		1918	{
		1919	if (expect_false (ev_is_active (w)))
		1920	return;
		1921
		1922	ev_start (EV_A_ (W)w, ++idlecnt);
		1923	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1924	idles [idlecnt - 1] = w;
		1925	}
		1926
		1927	void
		1928	ev_idle_stop (EV_P_ ev_idle *w)
		1929	{
		1930	ev_clear_pending (EV_A_ (W)w);
		1931	if (expect_false (!ev_is_active (w)))
		1932	return;
		1933
		1934	{
		1935	int active = ((W)w)->active;
		1936	idles [active - 1] = idles [--idlecnt];
		1937	((W)idles [active - 1])->active = active;
		1938	}
		1939
		1940	ev_stop (EV_A_ (W)w);
		1941	}
		1942
		1943	void
		1944	ev_prepare_start (EV_P_ ev_prepare *w)
		1945	{
		1946	if (expect_false (ev_is_active (w)))
		1947	return;
		1948
		1949	ev_start (EV_A_ (W)w, ++preparecnt);
		1950	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1951	prepares [preparecnt - 1] = w;
		1952	}
		1953
		1954	void
		1955	ev_prepare_stop (EV_P_ ev_prepare *w)
		1956	{
		1957	ev_clear_pending (EV_A_ (W)w);
		1958	if (expect_false (!ev_is_active (w)))
		1959	return;
		1960
		1961	{
		1962	int active = ((W)w)->active;
		1963	prepares [active - 1] = prepares [--preparecnt];
		1964	((W)prepares [active - 1])->active = active;
		1965	}
		1966
		1967	ev_stop (EV_A_ (W)w);
		1968	}
		1969
		1970	void
		1971	ev_check_start (EV_P_ ev_check *w)
		1972	{
		1973	if (expect_false (ev_is_active (w)))
		1974	return;
		1975
		1976	ev_start (EV_A_ (W)w, ++checkcnt);
		1977	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1978	checks [checkcnt - 1] = w;
		1979	}
		1980
		1981	void
		1982	ev_check_stop (EV_P_ ev_check *w)
		1983	{
		1984	ev_clear_pending (EV_A_ (W)w);
		1985	if (expect_false (!ev_is_active (w)))
		1986	return;
		1987
		1988	{
		1989	int active = ((W)w)->active;
		1990	checks [active - 1] = checks [--checkcnt];
		1991	((W)checks [active - 1])->active = active;
		1992	}
		1993
		1994	ev_stop (EV_A_ (W)w);
		1995	}
		1996
		1997	#if EV_EMBED_ENABLE
		1998	void noinline
		1999	ev_embed_sweep (EV_P_ ev_embed *w)
		2000	{
		2001	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2002	}
		2003
		2004	static void
		2005	embed_cb (EV_P_ ev_io *io, int revents)
		2006	{
		2007	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		2008
		2009	if (ev_cb (w))
		2010	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2011	else
		2012	ev_embed_sweep (loop, w);
		2013	}
		2014
		2015	void
		2016	ev_embed_start (EV_P_ ev_embed *w)
		2017	{
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	{
		2022	struct ev_loop *loop = w->loop;
		2023	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2024	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2025	}
		2026
		2027	ev_set_priority (&w->io, ev_priority (w));
		2028	ev_io_start (EV_A_ &w->io);
		2029
		2030	ev_start (EV_A_ (W)w, 1);
		2031	}
		2032
		2033	void
		2034	ev_embed_stop (EV_P_ ev_embed *w)
		2035	{
		2036	ev_clear_pending (EV_A_ (W)w);
		2037	if (expect_false (!ev_is_active (w)))
		2038	return;
		2039
		2040	ev_io_stop (EV_A_ &w->io);
		2041
		2042	ev_stop (EV_A_ (W)w);
		2043	}
		2044	#endif
		2045
		2046	#if EV_FORK_ENABLE
		2047	void
		2048	ev_fork_start (EV_P_ ev_fork *w)
		2049	{
		2050	if (expect_false (ev_is_active (w)))
		2051	return;
		2052
		2053	ev_start (EV_A_ (W)w, ++forkcnt);
		2054	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2055	forks [forkcnt - 1] = w;
		2056	}
		2057
		2058	void
		2059	ev_fork_stop (EV_P_ ev_fork *w)
		2060	{
		2061	ev_clear_pending (EV_A_ (W)w);
		2062	if (expect_false (!ev_is_active (w)))
		2063	return;
		2064
		2065	{
		2066	int active = ((W)w)->active;
		2067	forks [active - 1] = forks [--forkcnt];
		2068	((W)forks [active - 1])->active = active;
		2069	}
		2070
		2071	ev_stop (EV_A_ (W)w);
		2072	}
		2073	#endif
		2074
1520	/*****************************************************************************/	2075	/*****************************************************************************/
1521		2076
1522	struct ev_once	2077	struct ev_once
1523	{	2078	{
1524	struct ev_io io;	2079	ev_io io;
1525	struct ev_timer to;	2080	ev_timer to;
1526	void (cb)(int revents, void arg);	2081	void (cb)(int revents, void arg);
1527	void *arg;	2082	void *arg;
1528	};	2083	};
1529		2084
1530	static void	2085	static void
…		…
1539		2094
1540	cb (revents, arg);	2095	cb (revents, arg);
1541	}	2096	}
1542		2097
1543	static void	2098	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	2099	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	2100	{
1546	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	2101	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1547	}	2102	}
1548		2103
1549	static void	2104	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2105	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	2106	{
1552	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	2107	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1553	}	2108	}
1554		2109
1555	void	2110	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	2111	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1557	{	2112	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2113	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1559		2114
1560	if (!once)	2115	if (expect_false (!once))
		2116	{
1561	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	2117	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1562	else	2118	return;
1563	{	2119	}
		2120
1564	once->cb = cb;	2121	once->cb = cb;
1565	once->arg = arg;	2122	once->arg = arg;
1566		2123
1567	ev_watcher_init (&once->io, once_cb_io);	2124	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	2125	if (fd >= 0)
1569	{	2126	{
1570	ev_io_set (&once->io, fd, events);	2127	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	2128	ev_io_start (EV_A_ &once->io);
1572	}	2129	}
1573		2130
1574	ev_watcher_init (&once->to, once_cb_to);	2131	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	2132	if (timeout >= 0.)
1576	{	2133	{
1577	ev_timer_set (&once->to, timeout, 0.);	2134	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	2135	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	2136	}
1581	}	2137	}
1582		2138
		2139	#ifdef __cplusplus
		2140	}
		2141	#endif
		2142

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Comparing libev/ev.c (file contents): Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs. Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC