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

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 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
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
132	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
133	#else	200	#else
134	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
135	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
136	#endif	205	#endif
137		206
138	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
140		209
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
144	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
147		219
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		221
150	#if WIN32	222	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	224	#endif
155		225
156	/*****************************************************************************/	226	/*****************************************************************************/
157		227
158	static void (syserr_cb)(const char msg);	228	static void (syserr_cb)(const char msg);
159		229
		230	void
160	void ev_set_syserr_cb (void (cb)(const char msg))	231	ev_set_syserr_cb (void (cb)(const char msg))
161	{	232	{
162	syserr_cb = cb;	233	syserr_cb = cb;
163	}	234	}
164		235
165	static void	236	static void noinline
166	syserr (const char *msg)	237	syserr (const char *msg)
167	{	238	{
168	if (!msg)	239	if (!msg)
169	msg = "(libev) system error";	240	msg = "(libev) system error";
170		241
…		…
177	}	248	}
178	}	249	}
179		250
180	static void (alloc)(void *ptr, long size);	251	static void (alloc)(void *ptr, long size);
181		252
		253	void
182	void ev_set_allocator (void (cb)(void *ptr, long size))	254	ev_set_allocator (void (cb)(void *ptr, long size))
183	{	255	{
184	alloc = cb;	256	alloc = cb;
185	}	257	}
186		258
187	static void *	259	static void *
…		…
206	typedef struct	278	typedef struct
207	{	279	{
208	WL head;	280	WL head;
209	unsigned char events;	281	unsigned char events;
210	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
211	} ANFD;	286	} ANFD;
212		287
213	typedef struct	288	typedef struct
214	{	289	{
215	W w;	290	W w;
216	int events;	291	int events;
217	} ANPENDING;	292	} ANPENDING;
218		293
219	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
220		295
221	struct ev_loop	296	struct ev_loop
222	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	301	#include "ev_vars.h"
225	};
226	# undef VAR	302	#undef VAR
		303	};
227	# include "ev_wrap.h"	304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
228		308
229	#else	309	#else
230		310
		311	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	313	#include "ev_vars.h"
233	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
234		317
235	#endif	318	#endif
236		319
237	/*****************************************************************************/	320	/*****************************************************************************/
238		321
239	inline ev_tstamp	322	ev_tstamp
240	ev_time (void)	323	ev_time (void)
241	{	324	{
242	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
243	struct timespec ts;	326	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
248	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
249	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
250	#endif	333	#endif
251	}	334	}
252		335
253	inline ev_tstamp	336	ev_tstamp inline_size
254	get_clock (void)	337	get_clock (void)
255	{	338	{
256	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
257	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
258	{	341	{
…		…
263	#endif	346	#endif
264		347
265	return ev_time ();	348	return ev_time ();
266	}	349	}
267		350
		351	#if EV_MULTIPLICITY
268	ev_tstamp	352	ev_tstamp
269	ev_now (EV_P)	353	ev_now (EV_P)
270	{	354	{
271	return rt_now;	355	return ev_rt_now;
272	}	356	}
		357	#endif
273		358
274	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
275		360
276	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
278	{ \	363	{ \
279	int newcnt = cur; \	364	int newcnt = cur; \
280	do \	365	do \
281	{ \	366	{ \
282	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
283	} \	368	} \
284	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
285	\	370	\
286	base = ev_realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
287	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
288	cur = newcnt; \	373	cur = newcnt; \
289	}	374	}
290		375
291	#define array_slim(stem) \	376	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	378	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (base) (stem ## max)); \	380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
297	}	382	}
298		383
299	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
300	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
301		386
302	/*****************************************************************************/	387	/*****************************************************************************/
303		388
304	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
305	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
306	{	419	{
307	while (count--)	420	while (count--)
308	{	421	{
309	base->head = 0;	422	base->head = 0;
…		…
312		425
313	++base;	426	++base;
314	}	427	}
315	}	428	}
316		429
317	static void	430	void inline_speed
318	event (EV_P_ W w, int events)
319	{
320	if (w->pending)
321	{
322	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
323	return;
324	}
325
326	w->pending = ++pendingcnt [ABSPRI (w)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
328	pendings [ABSPRI (w)][w->pending - 1].w = w;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;
330	}
331
332	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{
335	int i;
336
337	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);
339	}
340
341	static void
342	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
343	{	432	{
344	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	434	ev_io *w;
346		435
347	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	436	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
348	{	437	{
349	int ev = w->events & events;	438	int ev = w->events & revents;
350		439
351	if (ev)	440	if (ev)
352	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
353	}	442	}
354	}	443	}
355		444
356	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
357		450
358	static void	451	void inline_size
359	fd_reify (EV_P)	452	fd_reify (EV_P)
360	{	453	{
361	int i;	454	int i;
362		455
363	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
364	{	457	{
365	int fd = fdchanges [i];	458	int fd = fdchanges [i];
366	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
367	struct ev_io *w;	460	ev_io *w;
368		461
369	int events = 0;	462	int events = 0;
370		463
371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	464	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
372	events \|= w->events;	465	events \|= w->events;
373		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
374	anfd->reify = 0;	476	anfd->reify = 0;
375		477
376	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	479	anfd->events = events;
378	}	480	}
379		481
380	fdchangecnt = 0;	482	fdchangecnt = 0;
381	}	483	}
382		484
383	static void	485	void inline_size
384	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
385	{	487	{
386	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
387	return;	489	return;
388		490
389	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
390		492
391	++fdchangecnt;	493	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
394	}	496	}
395		497
396	static void	498	void inline_speed
397	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
398	{	500	{
399	struct ev_io *w;	501	ev_io *w;
400		502
401	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
402	{	504	{
403	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
404	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
405	}	507	}
		508	}
		509
		510	int inline_size
		511	fd_valid (int fd)
		512	{
		513	#ifdef _WIN32
		514	return _get_osfhandle (fd) != -1;
		515	#else
		516	return fcntl (fd, F_GETFD) != -1;
		517	#endif
406	}	518	}
407		519
408	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
409	static void	521	static void noinline
410	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
411	{	523	{
412	int fd;	524	int fd;
413		525
414	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	527	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
418	}	530	}
419		531
420	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
421	static void	533	static void noinline
422	fd_enomem (EV_P)	534	fd_enomem (EV_P)
423	{	535	{
424	int fd;	536	int fd;
425		537
426	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
429	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
430	return;	542	return;
431	}	543	}
432	}	544	}
433		545
434	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
435	static void	547	static void noinline
436	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
437	{	549	{
438	int fd;	550	int fd;
439		551
440	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
446	}	558	}
447	}	559	}
448		560
449	/*****************************************************************************/	561	/*****************************************************************************/
450		562
451	static void	563	void inline_speed
452	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
453	{	565	{
454	WT w = heap [k];	566	WT w = heap [k];
455		567
456	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
463	heap [k] = w;	575	heap [k] = w;
464	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
465		577
466	}	578	}
467		579
468	static void	580	void inline_speed
469	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
470	{	582	{
471	WT w = heap [k];	583	WT w = heap [k];
472		584
473	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
487		599
488	heap [k] = w;	600	heap [k] = w;
489	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
490	}	602	}
491		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
		609	}
		610
492	/*****************************************************************************/	611	/*****************************************************************************/
493		612
494	typedef struct	613	typedef struct
495	{	614	{
496	WL head;	615	WL head;
…		…
500	static ANSIG *signals;	619	static ANSIG *signals;
501	static int signalmax;	620	static int signalmax;
502		621
503	static int sigpipe [2];	622	static int sigpipe [2];
504	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
505	static struct ev_io sigev;	624	static ev_io sigev;
506		625
507	static void	626	void inline_size
508	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
509	{	628	{
510	while (count--)	629	while (count--)
511	{	630	{
512	base->head = 0;	631	base->head = 0;
…		…
517	}	636	}
518		637
519	static void	638	static void
520	sighandler (int signum)	639	sighandler (int signum)
521	{	640	{
522	#if WIN32	641	#if _WIN32
523	signal (signum, sighandler);	642	signal (signum, sighandler);
524	#endif	643	#endif
525		644
526	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
527		646
…		…
532	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	652	errno = old_errno;
534	}	653	}
535	}	654	}
536		655
		656	void noinline
		657	ev_feed_signal_event (EV_P_ int signum)
		658	{
		659	WL w;
		660
		661	#if EV_MULTIPLICITY
		662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		663	#endif
		664
		665	--signum;
		666
		667	if (signum < 0 \|\| signum >= signalmax)
		668	return;
		669
		670	signals [signum].gotsig = 0;
		671
		672	for (w = signals [signum].head; w; w = w->next)
		673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		674	}
		675
537	static void	676	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
539	{	678	{
540	WL w;
541	int signum;	679	int signum;
542		680
543	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	682	gotsig = 0;
545		683
546	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
548	{	686	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;
550
551	for (w = signals [signum].head; w; w = w->next)
552	event (EV_A_ (W)w, EV_SIGNAL);
553	}
554	}	687	}
555		688
556	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
557	siginit (EV_P)	702	siginit (EV_P)
558	{	703	{
559	#ifndef WIN32	704	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		706
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	710	}
572		711
573	/*****************************************************************************/	712	/*****************************************************************************/
574		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
575	#ifndef WIN32	716	#ifndef _WIN32
576		717
577	static struct ev_child *childs [PID_HASHSIZE];
578	static struct ev_signal childev;	718	static ev_signal childev;
579		719
580	#ifndef WCONTINUED	720	#ifndef WCONTINUED
581	# define WCONTINUED 0	721	# define WCONTINUED 0
582	#endif	722	#endif
583		723
584	static void	724	void inline_speed
585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
586	{	726	{
587	struct ev_child *w;	727	ev_child *w;
588		728
589	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	729	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
590	if (w->pid == pid \|\| !w->pid)	730	if (w->pid == pid \|\| !w->pid)
591	{	731	{
592	ev_priority (w) = ev_priority (sw); /* need to do it now */	732	ev_priority (w) = ev_priority (sw); /* need to do it now */
593	w->rpid = pid;	733	w->rpid = pid;
594	w->rstatus = status;	734	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);	735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
596	}	736	}
597	}	737	}
598		738
599	static void	739	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
601	{	741	{
602	int pid, status;	742	int pid, status;
603		743
604	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	744	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
605	{	745	{
606	/* make sure we are called again until all childs have been reaped */	746	/* make sure we are called again until all childs have been reaped */
		747	/* we need to do it this way so that the callback gets called before we continue */
607	event (EV_A_ (W)sw, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		749
609	child_reap (EV_A_ sw, pid, pid, status);	750	child_reap (EV_A_ sw, pid, pid, status);
610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
611	}	752	}
612	}	753	}
613		754
614	#endif	755	#endif
615		756
616	/*****************************************************************************/	757	/*****************************************************************************/
617		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
618	#if EV_USE_KQUEUE	762	#if EV_USE_KQUEUE
619	# include "ev_kqueue.c"	763	# include "ev_kqueue.c"
620	#endif	764	#endif
621	#if EV_USE_EPOLL	765	#if EV_USE_EPOLL
622	# include "ev_epoll.c"	766	# include "ev_epoll.c"
…		…
639	{	783	{
640	return EV_VERSION_MINOR;	784	return EV_VERSION_MINOR;
641	}	785	}
642		786
643	/* return true if we are running with elevated privileges and should ignore env variables */	787	/* return true if we are running with elevated privileges and should ignore env variables */
644	static int	788	int inline_size
645	enable_secure (void)	789	enable_secure (void)
646	{	790	{
647	#ifdef WIN32	791	#ifdef _WIN32
648	return 0;	792	return 0;
649	#else	793	#else
650	return getuid () != geteuid ()	794	return getuid () != geteuid ()
651	\|\| getgid () != getegid ();	795	\|\| getgid () != getegid ();
652	#endif	796	#endif
653	}	797	}
654		798
655	int	799	unsigned int
656	ev_method (EV_P)	800	ev_supported_backends (void)
657	{	801	{
658	return method;	802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	\| EVBACKEND_KQUEUE
		836	\| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
659	}	843	}
660		844
661	static void	845	static void
662	loop_init (EV_P_ int methods)	846	loop_init (EV_P_ unsigned int flags)
663	{	847	{
664	if (!method)	848	if (!backend)
665	{	849	{
666	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
667	{	851	{
668	struct timespec ts;	852	struct timespec ts;
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	854	have_monotonic = 1;
671	}	855	}
672	#endif	856	#endif
673		857
674	rt_now = ev_time ();	858	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	859	mn_now = get_clock ();
676	now_floor = mn_now;	860	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	861	rtmn_diff = ev_rt_now - mn_now;
678		862
679	if (methods == EVMETHOD_AUTO)	863	if (!(flags & EVFLAG_NOENV)
680	if (!enable_secure () && getenv ("LIBEV_METHODS"))	864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	866	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else
683	methods = EVMETHOD_ANY;
684		867
685	method = 0;	868	if (!(flags & 0x0000ffffUL))
686	#if EV_USE_WIN32	869	flags \|= ev_recommended_backends ();
687	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
688	#endif	874	#endif
689	#if EV_USE_KQUEUE	875	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
691	#endif	877	#endif
692	#if EV_USE_EPOLL	878	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
694	#endif	880	#endif
695	#if EV_USE_POLL	881	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
697	#endif	883	#endif
698	#if EV_USE_SELECT	884	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
700	#endif	886	#endif
701		887
702	ev_watcher_init (&sigev, sigcb);	888	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	889	ev_set_priority (&sigev, EV_MAXPRI);
704	}	890	}
705	}	891	}
706		892
707	void	893	static void
708	loop_destroy (EV_P)	894	loop_destroy (EV_P)
709	{	895	{
710	int i;	896	int i;
711		897
712	#if EV_USE_WIN32	898	#if EV_USE_PORT
713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
714	#endif	900	#endif
715	#if EV_USE_KQUEUE	901	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
717	#endif	903	#endif
718	#if EV_USE_EPOLL	904	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
720	#endif	906	#endif
721	#if EV_USE_POLL	907	#if EV_USE_POLL
722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
723	#endif	909	#endif
724	#if EV_USE_SELECT	910	#if EV_USE_SELECT
725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
726	#endif	912	#endif
727		913
728	for (i = NUMPRI; i--; )	914	for (i = NUMPRI; i--; )
729	array_free (pending, [i]);	915	array_free (pending, [i]);
730		916
		917	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	918	array_free (fdchange, EMPTY0);
732	array_free (timer, );	919	array_free (timer, EMPTY0);
		920	#if EV_PERIODIC_ENABLE
733	array_free (periodic, );	921	array_free (periodic, EMPTY0);
		922	#endif
734	array_free (idle, );	923	array_free (idle, EMPTY0);
735	array_free (prepare, );	924	array_free (prepare, EMPTY0);
736	array_free (check, );	925	array_free (check, EMPTY0);
737		926
738	method = 0;	927	backend = 0;
739	}	928	}
740		929
741	static void	930	static void
742	loop_fork (EV_P)	931	loop_fork (EV_P)
743	{	932	{
		933	#if EV_USE_PORT
		934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		935	#endif
		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
744	#if EV_USE_EPOLL	939	#if EV_USE_EPOLL
745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	940	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
746	#endif
747	#if EV_USE_KQUEUE
748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
749	#endif	941	#endif
750		942
751	if (ev_is_active (&sigev))	943	if (ev_is_active (&sigev))
752	{	944	{
753	/* default loop */	945	/* default loop */
…		…
766	postfork = 0;	958	postfork = 0;
767	}	959	}
768		960
769	#if EV_MULTIPLICITY	961	#if EV_MULTIPLICITY
770	struct ev_loop *	962	struct ev_loop *
771	ev_loop_new (int methods)	963	ev_loop_new (unsigned int flags)
772	{	964	{
773	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	965	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
774		966
775	memset (loop, 0, sizeof (struct ev_loop));	967	memset (loop, 0, sizeof (struct ev_loop));
776		968
777	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
778		970
779	if (ev_method (EV_A))	971	if (ev_backend (EV_A))
780	return loop;	972	return loop;
781		973
782	return 0;	974	return 0;
783	}	975	}
784		976
…		…
796	}	988	}
797		989
798	#endif	990	#endif
799		991
800	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
805	#else	995	#else
806	static int default_loop;
807
808	int	996	int
		997	ev_default_loop (unsigned int flags)
809	#endif	998	#endif
810	ev_default_loop (int methods)
811	{	999	{
812	if (sigpipe [0] == sigpipe [1])	1000	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	1001	if (pipe (sigpipe))
814	return 0;	1002	return 0;
815		1003
816	if (!default_loop)	1004	if (!ev_default_loop_ptr)
817	{	1005	{
818	#if EV_MULTIPLICITY	1006	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	1008	#else
821	default_loop = 1;	1009	ev_default_loop_ptr = 1;
822	#endif	1010	#endif
823		1011
824	loop_init (EV_A_ methods);	1012	loop_init (EV_A_ flags);
825		1013
826	if (ev_method (EV_A))	1014	if (ev_backend (EV_A))
827	{	1015	{
828	siginit (EV_A);	1016	siginit (EV_A);
829		1017
830	#ifndef WIN32	1018	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	1019	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	1020	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	1021	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	1023	#endif
836	}	1024	}
837	else	1025	else
838	default_loop = 0;	1026	ev_default_loop_ptr = 0;
839	}	1027	}
840		1028
841	return default_loop;	1029	return ev_default_loop_ptr;
842	}	1030	}
843		1031
844	void	1032	void
845	ev_default_destroy (void)	1033	ev_default_destroy (void)
846	{	1034	{
847	#if EV_MULTIPLICITY	1035	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1036	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1037	#endif
850		1038
		1039	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	1040	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	1041	ev_signal_stop (EV_A_ &childev);
		1042	#endif
853		1043
854	ev_ref (EV_A); /* signal watcher */	1044	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	1045	ev_io_stop (EV_A_ &sigev);
856		1046
857	close (sigpipe [0]); sigpipe [0] = 0;	1047	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		1052
863	void	1053	void
864	ev_default_fork (void)	1054	ev_default_fork (void)
865	{	1055	{
866	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	1057	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	1058	#endif
869		1059
870	if (method)	1060	if (backend)
871	postfork = 1;	1061	postfork = 1;
872	}	1062	}
873		1063
874	/*****************************************************************************/	1064	/*****************************************************************************/
875		1065
876	static void	1066	int inline_size
		1067	any_pending (EV_P)
		1068	{
		1069	int pri;
		1070
		1071	for (pri = NUMPRI; pri--; )
		1072	if (pendingcnt [pri])
		1073	return 1;
		1074
		1075	return 0;
		1076	}
		1077
		1078	void inline_speed
877	call_pending (EV_P)	1079	call_pending (EV_P)
878	{	1080	{
879	int pri;	1081	int pri;
880		1082
881	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
882	while (pendingcnt [pri])	1084	while (pendingcnt [pri])
883	{	1085	{
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		1087
886	if (p->w)	1088	if (expect_true (p->w))
887	{	1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
888	p->w->pending = 0;	1092	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	1093	EV_CB_INVOKE (p->w, p->events);
890	}	1094	}
891	}	1095	}
892	}	1096	}
893		1097
894	static void	1098	void inline_size
895	timers_reify (EV_P)	1099	timers_reify (EV_P)
896	{	1100	{
897	while (timercnt && ((WT)timers [0])->at <= mn_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
898	{	1102	{
899	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
900		1104
901	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
902		1106
903	/* first reschedule or stop timer */	1107	/* first reschedule or stop timer */
904	if (w->repeat)	1108	if (w->repeat)
905	{	1109	{
906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1110	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1111
907	((WT)w)->at = mn_now + w->repeat;	1112	((WT)w)->at += w->repeat;
		1113	if (((WT)w)->at < mn_now)
		1114	((WT)w)->at = mn_now;
		1115
908	downheap ((WT *)timers, timercnt, 0);	1116	downheap ((WT *)timers, timercnt, 0);
909	}	1117	}
910	else	1118	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1119	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1120
913	event (EV_A_ (W)w, EV_TIMEOUT);	1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1122	}
915	}	1123	}
916		1124
917	static void	1125	#if EV_PERIODIC_ENABLE
		1126	void inline_size
918	periodics_reify (EV_P)	1127	periodics_reify (EV_P)
919	{	1128	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1130	{
922	struct ev_periodic *w = periodics [0];	1131	ev_periodic *w = periodics [0];
923		1132
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
925		1134
926	/* first reschedule or stop timer */	1135	/* first reschedule or stop timer */
927	if (w->interval)	1136	if (w->reschedule_cb)
928	{	1137	{
		1138	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1140	downheap ((WT *)periodics, periodiccnt, 0);
		1141	}
		1142	else if (w->interval)
		1143	{
929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1144	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1145	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
931	downheap ((WT *)periodics, periodiccnt, 0);	1146	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1147	}
933	else	1148	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1149	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1150
936	event (EV_A_ (W)w, EV_PERIODIC);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1152	}
938	}	1153	}
939		1154
940	static void	1155	static void noinline
941	periodics_reschedule (EV_P)	1156	periodics_reschedule (EV_P)
942	{	1157	{
943	int i;	1158	int i;
944		1159
945	/* adjust periodics after time jump */	1160	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1161	for (i = 0; i < periodiccnt; ++i)
947	{	1162	{
948	struct ev_periodic *w = periodics [i];	1163	ev_periodic *w = periodics [i];
949		1164
		1165	if (w->reschedule_cb)
		1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1167	else if (w->interval)
951	{
952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
953
954	if (fabs (diff) >= 1e-4)
955	{
956	ev_periodic_stop (EV_A_ w);
957	ev_periodic_start (EV_A_ w);
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}
961	}
962	}	1169	}
963	}
964		1170
965	inline int	1171	/* now rebuild the heap */
		1172	for (i = periodiccnt >> 1; i--; )
		1173	downheap ((WT *)periodics, periodiccnt, i);
		1174	}
		1175	#endif
		1176
		1177	int inline_size
966	time_update_monotonic (EV_P)	1178	time_update_monotonic (EV_P)
967	{	1179	{
968	mn_now = get_clock ();	1180	mn_now = get_clock ();
969		1181
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1183	{
972	rt_now = rtmn_diff + mn_now;	1184	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1185	return 0;
974	}	1186	}
975	else	1187	else
976	{	1188	{
977	now_floor = mn_now;	1189	now_floor = mn_now;
978	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
979	return 1;	1191	return 1;
980	}	1192	}
981	}	1193	}
982		1194
983	static void	1195	void inline_size
984	time_update (EV_P)	1196	time_update (EV_P)
985	{	1197	{
986	int i;	1198	int i;
987		1199
988	#if EV_USE_MONOTONIC	1200	#if EV_USE_MONOTONIC
…		…
990	{	1202	{
991	if (time_update_monotonic (EV_A))	1203	if (time_update_monotonic (EV_A))
992	{	1204	{
993	ev_tstamp odiff = rtmn_diff;	1205	ev_tstamp odiff = rtmn_diff;
994		1206
995	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
996	{	1216	{
997	rtmn_diff = rt_now - mn_now;	1217	rtmn_diff = ev_rt_now - mn_now;
998		1218
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1220	return; /* all is well */
1001		1221
1002	rt_now = ev_time ();	1222	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1223	mn_now = get_clock ();
1004	now_floor = mn_now;	1224	now_floor = mn_now;
1005	}	1225	}
1006		1226
		1227	# if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1228	periodics_reschedule (EV_A);
		1229	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1230	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1232	}
1011	}	1233	}
1012	else	1234	else
1013	#endif	1235	#endif
1014	{	1236	{
1015	rt_now = ev_time ();	1237	ev_rt_now = ev_time ();
1016		1238
1017	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1239	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1018	{	1240	{
		1241	#if EV_PERIODIC_ENABLE
1019	periodics_reschedule (EV_A);	1242	periodics_reschedule (EV_A);
		1243	#endif
1020		1244
1021	/* adjust timers. this is easy, as the offset is the same for all */	1245	/* adjust timers. this is easy, as the offset is the same for all */
1022	for (i = 0; i < timercnt; ++i)	1246	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1247	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1248	}
1025		1249
1026	mn_now = rt_now;	1250	mn_now = ev_rt_now;
1027	}	1251	}
1028	}	1252	}
1029		1253
1030	void	1254	void
1031	ev_ref (EV_P)	1255	ev_ref (EV_P)
…		…
1042	static int loop_done;	1266	static int loop_done;
1043		1267
1044	void	1268	void
1045	ev_loop (EV_P_ int flags)	1269	ev_loop (EV_P_ int flags)
1046	{	1270	{
1047	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1271	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
1049		1274
1050	do	1275	while (activecnt)
1051	{	1276	{
1052	/* queue check watchers (and execute them) */	1277	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1278	if (expect_false (preparecnt))
1054	{	1279	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1062		1287
1063	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1289	fd_reify (EV_A);
1065		1290
1066	/* calculate blocking time */	1291	/* calculate blocking time */
		1292	{
		1293	double block;
1067		1294
1068	/* we only need this for !monotonic clockor timers, but as we basically	1295	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1069	always have timers, we just calculate it always */	1296	block = 0.; /* do not block at all */
		1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
1070	#if EV_USE_MONOTONIC	1300	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1301	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1302	time_update_monotonic (EV_A);
1073	else	1303	else
1074	#endif	1304	#endif
1075	{	1305	{
1076	rt_now = ev_time ();	1306	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1307	mn_now = ev_rt_now;
1078	}	1308	}
1079		1309
1080	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1081	block = 0.;
1082	else
1083	{
1084	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
1085		1311
1086	if (timercnt)	1312	if (timercnt)
1087	{	1313	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1089	if (block > to) block = to;	1315	if (block > to) block = to;
1090	}	1316	}
1091		1317
		1318	#if EV_PERIODIC_ENABLE
1092	if (periodiccnt)	1319	if (periodiccnt)
1093	{	1320	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1095	if (block > to) block = to;	1322	if (block > to) block = to;
1096	}	1323	}
		1324	#endif
1097		1325
1098	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
1099	}	1327	}
1100		1328
1101	method_poll (EV_A_ block);	1329	backend_poll (EV_A_ block);
		1330	}
1102		1331
1103	/* update rt_now, do magic */	1332	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1333	time_update (EV_A);
1105		1334
1106	/* queue pending timers and reschedule them */	1335	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1336	timers_reify (EV_A); /* relative timers called last */
		1337	#if EV_PERIODIC_ENABLE
1108	periodics_reify (EV_A); /* absolute timers called first */	1338	periodics_reify (EV_A); /* absolute timers called first */
		1339	#endif
1109		1340
1110	/* queue idle watchers unless io or timers are pending */	1341	/* queue idle watchers unless other events are pending */
1111	if (!pendingcnt)	1342	if (idlecnt && !any_pending (EV_A))
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1113		1344
1114	/* queue check watchers, to be executed first */	1345	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1346	if (expect_false (checkcnt))
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1348
1118	call_pending (EV_A);	1349	call_pending (EV_A);
1119	}
1120	while (activecnt && !loop_done);
1121		1350
1122	if (loop_done != 2)	1351	if (expect_false (loop_done))
1123	loop_done = 0;	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
1124	}	1357	}
1125		1358
1126	void	1359	void
1127	ev_unloop (EV_P_ int how)	1360	ev_unloop (EV_P_ int how)
1128	{	1361	{
1129	loop_done = how;	1362	loop_done = how;
1130	}	1363	}
1131		1364
1132	/*****************************************************************************/	1365	/*****************************************************************************/
1133		1366
1134	inline void	1367	void inline_size
1135	wlist_add (WL *head, WL elem)	1368	wlist_add (WL *head, WL elem)
1136	{	1369	{
1137	elem->next = *head;	1370	elem->next = *head;
1138	*head = elem;	1371	*head = elem;
1139	}	1372	}
1140		1373
1141	inline void	1374	void inline_size
1142	wlist_del (WL *head, WL elem)	1375	wlist_del (WL *head, WL elem)
1143	{	1376	{
1144	while (*head)	1377	while (*head)
1145	{	1378	{
1146	if (*head == elem)	1379	if (*head == elem)
…		…
1151		1384
1152	head = &(*head)->next;	1385	head = &(*head)->next;
1153	}	1386	}
1154	}	1387	}
1155		1388
1156	inline void	1389	void inline_speed
1157	ev_clear_pending (EV_P_ W w)	1390	ev_clear_pending (EV_P_ W w)
1158	{	1391	{
1159	if (w->pending)	1392	if (w->pending)
1160	{	1393	{
1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1162	w->pending = 0;	1395	w->pending = 0;
1163	}	1396	}
1164	}	1397	}
1165		1398
1166	inline void	1399	void inline_speed
1167	ev_start (EV_P_ W w, int active)	1400	ev_start (EV_P_ W w, int active)
1168	{	1401	{
1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1171		1404
1172	w->active = active;	1405	w->active = active;
1173	ev_ref (EV_A);	1406	ev_ref (EV_A);
1174	}	1407	}
1175		1408
1176	inline void	1409	void inline_size
1177	ev_stop (EV_P_ W w)	1410	ev_stop (EV_P_ W w)
1178	{	1411	{
1179	ev_unref (EV_A);	1412	ev_unref (EV_A);
1180	w->active = 0;	1413	w->active = 0;
1181	}	1414	}
1182		1415
1183	/*****************************************************************************/	1416	/*****************************************************************************/
1184		1417
1185	void	1418	void
1186	ev_io_start (EV_P_ struct ev_io *w)	1419	ev_io_start (EV_P_ ev_io *w)
1187	{	1420	{
1188	int fd = w->fd;	1421	int fd = w->fd;
1189		1422
1190	if (ev_is_active (w))	1423	if (expect_false (ev_is_active (w)))
1191	return;	1424	return;
1192		1425
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1426	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1427
1195	ev_start (EV_A_ (W)w, 1);	1428	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1429	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1430	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1431
1199	fd_change (EV_A_ fd);	1432	fd_change (EV_A_ fd);
1200	}	1433	}
1201		1434
1202	void	1435	void
1203	ev_io_stop (EV_P_ struct ev_io *w)	1436	ev_io_stop (EV_P_ ev_io *w)
1204	{	1437	{
1205	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1439	if (expect_false (!ev_is_active (w)))
1207	return;	1440	return;
		1441
		1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1208		1443
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1445	ev_stop (EV_A_ (W)w);
1211		1446
1212	fd_change (EV_A_ w->fd);	1447	fd_change (EV_A_ w->fd);
1213	}	1448	}
1214		1449
1215	void	1450	void
1216	ev_timer_start (EV_P_ struct ev_timer *w)	1451	ev_timer_start (EV_P_ ev_timer *w)
1217	{	1452	{
1218	if (ev_is_active (w))	1453	if (expect_false (ev_is_active (w)))
1219	return;	1454	return;
1220		1455
1221	((WT)w)->at += mn_now;	1456	((WT)w)->at += mn_now;
1222		1457
1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1224		1459
1225	ev_start (EV_A_ (W)w, ++timercnt);	1460	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1462	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1463	upheap ((WT *)timers, timercnt - 1);
1229		1464
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}	1466	}
1232		1467
1233	void	1468	void
1234	ev_timer_stop (EV_P_ struct ev_timer *w)	1469	ev_timer_stop (EV_P_ ev_timer *w)
1235	{	1470	{
1236	ev_clear_pending (EV_A_ (W)w);	1471	ev_clear_pending (EV_A_ (W)w);
1237	if (!ev_is_active (w))	1472	if (expect_false (!ev_is_active (w)))
1238	return;	1473	return;
1239		1474
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1241		1476
1242	if (((W)w)->active < timercnt--)	1477	if (expect_true (((W)w)->active < timercnt--))
1243	{	1478	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1479	timers [((W)w)->active - 1] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1481	}
1247		1482
1248	((WT)w)->at = w->repeat;	1483	((WT)w)->at -= mn_now;
1249		1484
1250	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1251	}	1486	}
1252		1487
1253	void	1488	void
1254	ev_timer_again (EV_P_ struct ev_timer *w)	1489	ev_timer_again (EV_P_ ev_timer *w)
1255	{	1490	{
1256	if (ev_is_active (w))	1491	if (ev_is_active (w))
1257	{	1492	{
1258	if (w->repeat)	1493	if (w->repeat)
1259	{	1494	{
1260	((WT)w)->at = mn_now + w->repeat;	1495	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1497	}
1263	else	1498	else
1264	ev_timer_stop (EV_A_ w);	1499	ev_timer_stop (EV_A_ w);
1265	}	1500	}
1266	else if (w->repeat)	1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1504	ev_timer_start (EV_A_ w);
		1505	}
1268	}	1506	}
1269		1507
		1508	#if EV_PERIODIC_ENABLE
1270	void	1509	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1510	ev_periodic_start (EV_P_ ev_periodic *w)
1272	{	1511	{
1273	if (ev_is_active (w))	1512	if (expect_false (ev_is_active (w)))
1274	return;	1513	return;
1275		1514
		1515	if (w->reschedule_cb)
		1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1517	else if (w->interval)
		1518	{
1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1519	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1277
1278	/* this formula differs from the one in periodic_reify because we do not always round up */	1520	/* this formula differs from the one in periodic_reify because we do not always round up */
1279	if (w->interval)
1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1522	}
1281		1523
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1524	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1526	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1527	upheap ((WT *)periodics, periodiccnt - 1);
1286		1528
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}	1530	}
1289		1531
1290	void	1532	void
1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1533	ev_periodic_stop (EV_P_ ev_periodic *w)
1292	{	1534	{
1293	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1295	return;	1537	return;
1296		1538
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1298		1540
1299	if (((W)w)->active < periodiccnt--)	1541	if (expect_true (((W)w)->active < periodiccnt--))
1300	{	1542	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1303	}	1545	}
1304		1546
1305	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1306	}	1548	}
1307		1549
1308	void	1550	void
		1551	ev_periodic_again (EV_P_ ev_periodic *w)
		1552	{
		1553	/* TODO: use adjustheap and recalculation */
		1554	ev_periodic_stop (EV_A_ w);
		1555	ev_periodic_start (EV_A_ w);
		1556	}
		1557	#endif
		1558
		1559	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1560	ev_idle_start (EV_P_ ev_idle *w)
1310	{	1561	{
1311	if (ev_is_active (w))	1562	if (expect_false (ev_is_active (w)))
1312	return;	1563	return;
1313		1564
1314	ev_start (EV_A_ (W)w, ++idlecnt);	1565	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );	1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1316	idles [idlecnt - 1] = w;	1567	idles [idlecnt - 1] = w;
1317	}	1568	}
1318		1569
1319	void	1570	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)	1571	ev_idle_stop (EV_P_ ev_idle *w)
1321	{	1572	{
1322	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))	1574	if (expect_false (!ev_is_active (w)))
1324	return;	1575	return;
1325		1576
		1577	{
		1578	int active = ((W)w)->active;
1326	idles [((W)w)->active - 1] = idles [--idlecnt];	1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
1327	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1328	}	1584	}
1329		1585
1330	void	1586	void
1331	ev_prepare_start (EV_P_ struct ev_prepare *w)	1587	ev_prepare_start (EV_P_ ev_prepare *w)
1332	{	1588	{
1333	if (ev_is_active (w))	1589	if (expect_false (ev_is_active (w)))
1334	return;	1590	return;
1335		1591
1336	ev_start (EV_A_ (W)w, ++preparecnt);	1592	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );	1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1338	prepares [preparecnt - 1] = w;	1594	prepares [preparecnt - 1] = w;
1339	}	1595	}
1340		1596
1341	void	1597	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1343	{	1599	{
1344	ev_clear_pending (EV_A_ (W)w);	1600	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))	1601	if (expect_false (!ev_is_active (w)))
1346	return;	1602	return;
1347		1603
		1604	{
		1605	int active = ((W)w)->active;
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
1349	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1350	}	1611	}
1351		1612
1352	void	1613	void
1353	ev_check_start (EV_P_ struct ev_check *w)	1614	ev_check_start (EV_P_ ev_check *w)
1354	{	1615	{
1355	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1356	return;	1617	return;
1357		1618
1358	ev_start (EV_A_ (W)w, ++checkcnt);	1619	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );	1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1360	checks [checkcnt - 1] = w;	1621	checks [checkcnt - 1] = w;
1361	}	1622	}
1362		1623
1363	void	1624	void
1364	ev_check_stop (EV_P_ struct ev_check *w)	1625	ev_check_stop (EV_P_ ev_check *w)
1365	{	1626	{
1366	ev_clear_pending (EV_A_ (W)w);	1627	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))	1628	if (expect_false (!ev_is_active (w)))
1368	return;	1629	return;
1369		1630
		1631	{
		1632	int active = ((W)w)->active;
1370	checks [((W)w)->active - 1] = checks [--checkcnt];	1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
1371	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1372	}	1638	}
1373		1639
1374	#ifndef SA_RESTART	1640	#ifndef SA_RESTART
1375	# define SA_RESTART 0	1641	# define SA_RESTART 0
1376	#endif	1642	#endif
1377		1643
1378	void	1644	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1645	ev_signal_start (EV_P_ ev_signal *w)
1380	{	1646	{
1381	#if EV_MULTIPLICITY	1647	#if EV_MULTIPLICITY
1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1383	#endif	1649	#endif
1384	if (ev_is_active (w))	1650	if (expect_false (ev_is_active (w)))
1385	return;	1651	return;
1386		1652
1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1388		1654
1389	ev_start (EV_A_ (W)w, 1);	1655	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1658
1393	if (!((WL)w)->next)	1659	if (!((WL)w)->next)
1394	{	1660	{
1395	#if WIN32	1661	#if _WIN32
1396	signal (w->signum, sighandler);	1662	signal (w->signum, sighandler);
1397	#else	1663	#else
1398	struct sigaction sa;	1664	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1665	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1666	sigfillset (&sa.sa_mask);
…		…
1403	#endif	1669	#endif
1404	}	1670	}
1405	}	1671	}
1406		1672
1407	void	1673	void
1408	ev_signal_stop (EV_P_ struct ev_signal *w)	1674	ev_signal_stop (EV_P_ ev_signal *w)
1409	{	1675	{
1410	ev_clear_pending (EV_A_ (W)w);	1676	ev_clear_pending (EV_A_ (W)w);
1411	if (!ev_is_active (w))	1677	if (expect_false (!ev_is_active (w)))
1412	return;	1678	return;
1413		1679
1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1415	ev_stop (EV_A_ (W)w);	1681	ev_stop (EV_A_ (W)w);
1416		1682
1417	if (!signals [w->signum - 1].head)	1683	if (!signals [w->signum - 1].head)
1418	signal (w->signum, SIG_DFL);	1684	signal (w->signum, SIG_DFL);
1419	}	1685	}
1420		1686
1421	void	1687	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1688	ev_child_start (EV_P_ ev_child *w)
1423	{	1689	{
1424	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1425	assert (("child watchers are only supported in the default loop", loop == default_loop));	1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1426	#endif	1692	#endif
1427	if (ev_is_active (w))	1693	if (expect_false (ev_is_active (w)))
1428	return;	1694	return;
1429		1695
1430	ev_start (EV_A_ (W)w, 1);	1696	ev_start (EV_A_ (W)w, 1);
1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1432	}	1698	}
1433		1699
1434	void	1700	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1701	ev_child_stop (EV_P_ ev_child *w)
1436	{	1702	{
1437	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1439	return;	1705	return;
1440		1706
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1443	}	1709	}
1444		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
		1718	static void
		1719	embed_cb (EV_P_ ev_io *io, int revents)
		1720	{
		1721	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
		1773	}
		1774
		1775	static void
		1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1777	{
		1778	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1779
		1780	/* we copy this here each the time so that */
		1781	/* prev has the old value when the callback gets invoked */
		1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
		1789	void
		1790	ev_stat_start (EV_P_ ev_stat *w)
		1791	{
		1792	if (expect_false (ev_is_active (w)))
		1793	return;
		1794
		1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
		1798
		1799	ev_stat_stat (EV_A_ w);
		1800
		1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1802	ev_set_priority (&w->timer, ev_priority (w));
		1803	ev_timer_start (EV_A_ &w->timer);
		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
		1808	void
		1809	ev_stat_stop (EV_P_ ev_stat *w)
		1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
		1812	if (expect_false (!ev_is_active (w)))
		1813	return;
		1814
		1815	ev_timer_stop (EV_A_ &w->timer);
		1816
		1817	ev_stop (EV_A_ (W)w);
		1818	}
		1819	#endif
		1820
1445	/*****************************************************************************/	1821	/*****************************************************************************/
1446		1822
1447	struct ev_once	1823	struct ev_once
1448	{	1824	{
1449	struct ev_io io;	1825	ev_io io;
1450	struct ev_timer to;	1826	ev_timer to;
1451	void (cb)(int revents, void arg);	1827	void (cb)(int revents, void arg);
1452	void *arg;	1828	void *arg;
1453	};	1829	};
1454		1830
1455	static void	1831	static void
…		…
1464		1840
1465	cb (revents, arg);	1841	cb (revents, arg);
1466	}	1842	}
1467		1843
1468	static void	1844	static void
1469	once_cb_io (EV_P_ struct ev_io *w, int revents)	1845	once_cb_io (EV_P_ ev_io *w, int revents)
1470	{	1846	{
1471	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1847	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1472	}	1848	}
1473		1849
1474	static void	1850	static void
1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
1476	{	1852	{
1477	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1853	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1478	}	1854	}
1479		1855
1480	void	1856	void
1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1482	{	1858	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1859	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1484		1860
1485	if (!once)	1861	if (expect_false (!once))
		1862	{
1486	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1863	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1487	else	1864	return;
1488	{	1865	}
		1866
1489	once->cb = cb;	1867	once->cb = cb;
1490	once->arg = arg;	1868	once->arg = arg;
1491		1869
1492	ev_watcher_init (&once->io, once_cb_io);	1870	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	1871	if (fd >= 0)
1494	{	1872	{
1495	ev_io_set (&once->io, fd, events);	1873	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	1874	ev_io_start (EV_A_ &once->io);
1497	}	1875	}
1498		1876
1499	ev_watcher_init (&once->to, once_cb_to);	1877	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	1878	if (timeout >= 0.)
1501	{	1879	{
1502	ev_timer_set (&once->to, timeout, 0.);	1880	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	1881	ev_timer_start (EV_A_ &once->to);
1504	}
1505	}	1882	}
1506	}	1883	}
1507		1884
		1885	#ifdef __cplusplus
		1886	}
		1887	#endif
		1888

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Comparing libev/ev.c (file contents): Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs. Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC