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Comparing libev/ev.c (file contents):
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 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
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
150	/*****************************************************************************/	226	/*****************************************************************************/
151		227
		228	static void (*syserr_cb)(const char *msg);
		229
		230	void ev_set_syserr_cb (void (*cb)(const char *msg))
		231	{
		232	syserr_cb = cb;
		233	}
		234
		235	static void
		236	syserr (const char *msg)
		237	{
		238	if (!msg)
		239	msg = "(libev) system error";
		240
		241	if (syserr_cb)
		242	syserr_cb (msg);
		243	else
		244	{
		245	perror (msg);
		246	abort ();
		247	}
		248	}
		249
		250	static void *(*alloc)(void *ptr, long size);
		251
		252	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		253	{
		254	alloc = cb;
		255	}
		256
		257	static void *
		258	ev_realloc (void *ptr, long size)
		259	{
		260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		261
		262	if (!ptr && size)
		263	{
		264	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		265	abort ();
		266	}
		267
		268	return ptr;
		269	}
		270
		271	#define ev_malloc(size) ev_realloc (0, (size))
		272	#define ev_free(ptr) ev_realloc ((ptr), 0)
		273
		274	/*****************************************************************************/
		275
152	typedef struct	276	typedef struct
153	{	277	{
154	struct ev_watcher_list *head;	278	WL head;
155	unsigned char events;	279	unsigned char events;
156	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
157	} ANFD;	284	} ANFD;
158		285
159	typedef struct	286	typedef struct
160	{	287	{
161	W w;	288	W w;
162	int events;	289	int events;
163	} ANPENDING;	290	} ANPENDING;
164		291
165	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
166		293
167	struct ev_loop	294	struct ev_loop
168	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	299	#include "ev_vars.h"
171	};
172	# undef VAR	300	#undef VAR
		301	};
173	# include "ev_wrap.h"	302	#include "ev_wrap.h"
		303
		304	static struct ev_loop default_loop_struct;
		305	struct ev_loop *ev_default_loop_ptr;
174		306
175	#else	307	#else
176		308
		309	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	311	#include "ev_vars.h"
179	# undef VAR	312	#undef VAR
		313
		314	static int ev_default_loop_ptr;
180		315
181	#endif	316	#endif
182		317
183	/*****************************************************************************/	318	/*****************************************************************************/
184		319
185	inline ev_tstamp	320	ev_tstamp noinline
186	ev_time (void)	321	ev_time (void)
187	{	322	{
188	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
189	struct timespec ts;	324	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	331	#endif
197	}	332	}
198		333
199	inline ev_tstamp	334	ev_tstamp inline_size
200	get_clock (void)	335	get_clock (void)
201	{	336	{
202	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
204	{	339	{
…		…
209	#endif	344	#endif
210		345
211	return ev_time ();	346	return ev_time ();
212	}	347	}
213		348
		349	#if EV_MULTIPLICITY
214	ev_tstamp	350	ev_tstamp
215	ev_now (EV_P)	351	ev_now (EV_P)
216	{	352	{
217	return rt_now;	353	return ev_rt_now;
218	}	354	}
		355	#endif
219		356
220	#define array_roundsize(base,n) ((n) | 4 & ~3)	357	#define array_roundsize(type,n) (((n) | 4) & ~3)
221		358
222	#define array_needsize(base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
224	{ \	361	{ \
225	int newcnt = cur; \	362	int newcnt = cur; \
226	do \	363	do \
227	{ \	364	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	365	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	366	} \
230	while ((cnt) > newcnt); \	367	while ((cnt) > newcnt); \
231	\	368	\
232	base = realloc (base, sizeof (*base) * (newcnt)); \	369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
233	init (base + cur, newcnt - cur); \	370	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	371	cur = newcnt; \
		372	}
		373
		374	#define array_slim(type,stem) \
		375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		376	{ \
		377	stem ## max = array_roundsize (stem ## cnt >> 1); \
		378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
235	}	380	}
236		381
237	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
239		384
240	/*****************************************************************************/	385	/*****************************************************************************/
241		386
242	static void	387	void inline_size
243	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
244	{	389	{
245	while (count--)	390	while (count--)
246	{	391	{
247	base->head = 0;	392	base->head = 0;
…		…
250		395
251	++base;	396	++base;
252	}	397	}
253	}	398	}
254		399
255	static void	400	void noinline
256	event (EV_P_ W w, int events)	401	ev_feed_event (EV_P_ void *w, int revents)
257	{	402	{
258	if (w->pending)	403	W w_ = (W)w;
		404
		405	if (expect_false (w_->pending))
259	{	406	{
260	pendings [ABSPRI (w)][w->pending - 1].events |= events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
261	return;	408	return;
262	}	409	}
263		410
264	w->pending = ++pendingcnt [ABSPRI (w)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
265	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
266	pendings [ABSPRI (w)][w->pending - 1].w = w;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
267	pendings [ABSPRI (w)][w->pending - 1].events = events;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
268	}	415	}
269		416
270	static void	417	static void
271	queue_events (EV_P_ W *events, int eventcnt, int type)	418	queue_events (EV_P_ W *events, int eventcnt, int type)
272	{	419	{
273	int i;	420	int i;
274		421
275	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
276	event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
277	}	424	}
278		425
279	static void	426	void inline_speed
280	fd_event (EV_P_ int fd, int events)	427	fd_event (EV_P_ int fd, int revents)
281	{	428	{
282	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
283	struct ev_io *w;	430	ev_io *w;
284		431
285	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	432	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
286	{	433	{
287	int ev = w->events & events;	434	int ev = w->events & revents;
288		435
289	if (ev)	436	if (ev)
290	event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
291	}	438	}
		439	}
		440
		441	void
		442	ev_feed_fd_event (EV_P_ int fd, int revents)
		443	{
		444	fd_event (EV_A_ fd, revents);
292	}	445	}
293		446
294	/*****************************************************************************/	447	/*****************************************************************************/
295		448
296	static void	449	void inline_size
297	fd_reify (EV_P)	450	fd_reify (EV_P)
298	{	451	{
299	int i;	452	int i;
300		453
301	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
302	{	455	{
303	int fd = fdchanges [i];	456	int fd = fdchanges [i];
304	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
305	struct ev_io *w;	458	ev_io *w;
306		459
307	int events = 0;	460	int events = 0;
308		461
309	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
310	events |= w->events;	463	events |= w->events;
311		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
312	anfd->reify = 0;	474	anfd->reify = 0;
313		475
314	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
315	anfd->events = events;	477	anfd->events = events;
316	}	478	}
317		479
318	fdchangecnt = 0;	480	fdchangecnt = 0;
319	}	481	}
320		482
321	static void	483	void inline_size
322	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
323	{	485	{
324	if (anfds [fd].reify || fdchangecnt < 0)	486	if (expect_false (anfds [fd].reify))
325	return;	487	return;
326		488
327	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
328		490
329	++fdchangecnt;	491	++fdchangecnt;
330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
332	}	494	}
333		495
334	static void	496	void inline_speed
335	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
336	{	498	{
337	struct ev_io *w;	499	ev_io *w;
338		500
339	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
340	{	502	{
341	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
343	}	505	}
		506	}
		507
		508	int inline_size
		509	fd_valid (int fd)
		510	{
		511	#ifdef _WIN32
		512	return _get_osfhandle (fd) != -1;
		513	#else
		514	return fcntl (fd, F_GETFD) != -1;
		515	#endif
344	}	516	}
345		517
346	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
347	static void	519	static void noinline
348	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
349	{	521	{
350	int fd;	522	int fd;
351		523
352	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	525	if (anfds [fd].events)
354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
355	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
356	}	528	}
357		529
358	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
359	static void	531	static void noinline
360	fd_enomem (EV_P)	532	fd_enomem (EV_P)
361	{	533	{
362	int fd;	534	int fd;
363		535
364	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
365	if (anfds [fd].events)	537	if (anfds [fd].events)
366	{	538	{
367	close (fd);
368	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
369	return;	540	return;
370	}	541	}
371	}	542	}
372		543
373	/* susually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
374	static void	545	static void noinline
375	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
376	{	547	{
377	int fd;	548	int fd;
378		549
379	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
385	}	556	}
386	}	557	}
387		558
388	/*****************************************************************************/	559	/*****************************************************************************/
389		560
390	static void	561	void inline_speed
391	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
392	{	563	{
393	WT w = heap [k];	564	WT w = heap [k];
394		565
395	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
402	heap [k] = w;	573	heap [k] = w;
403	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
404		575
405	}	576	}
406		577
407	static void	578	void inline_speed
408	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
409	{	580	{
410	WT w = heap [k];	581	WT w = heap [k];
411		582
412	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
426		597
427	heap [k] = w;	598	heap [k] = w;
428	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
429	}	600	}
430		601
		602	void inline_size
		603	adjustheap (WT *heap, int N, int k)
		604	{
		605	upheap (heap, k);
		606	downheap (heap, N, k);
		607	}
		608
431	/*****************************************************************************/	609	/*****************************************************************************/
432		610
433	typedef struct	611	typedef struct
434	{	612	{
435	struct ev_watcher_list *head;	613	WL head;
436	sig_atomic_t volatile gotsig;	614	sig_atomic_t volatile gotsig;
437	} ANSIG;	615	} ANSIG;
438		616
439	static ANSIG *signals;	617	static ANSIG *signals;
440	static int signalmax;	618	static int signalmax;
441		619
442	static int sigpipe [2];	620	static int sigpipe [2];
443	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
444	static struct ev_io sigev;	622	static ev_io sigev;
445		623
446	static void	624	void inline_size
447	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
448	{	626	{
449	while (count--)	627	while (count--)
450	{	628	{
451	base->head = 0;	629	base->head = 0;
…		…
456	}	634	}
457		635
458	static void	636	static void
459	sighandler (int signum)	637	sighandler (int signum)
460	{	638	{
		639	#if _WIN32
		640	signal (signum, sighandler);
		641	#endif
		642
461	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
462		644
463	if (!gotsig)	645	if (!gotsig)
464	{	646	{
465	int old_errno = errno;	647	int old_errno = errno;
…		…
467	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
468	errno = old_errno;	650	errno = old_errno;
469	}	651	}
470	}	652	}
471		653
		654	void noinline
		655	ev_feed_signal_event (EV_P_ int signum)
		656	{
		657	WL w;
		658
		659	#if EV_MULTIPLICITY
		660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		661	#endif
		662
		663	--signum;
		664
		665	if (signum < 0 || signum >= signalmax)
		666	return;
		667
		668	signals [signum].gotsig = 0;
		669
		670	for (w = signals [signum].head; w; w = w->next)
		671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		672	}
		673
472	static void	674	static void
473	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
474	{	676	{
475	struct ev_watcher_list *w;
476	int signum;	677	int signum;
477		678
478	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
479	gotsig = 0;	680	gotsig = 0;
480		681
481	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
482	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
483	{	684	ev_feed_signal_event (EV_A_ signum + 1);
484	signals [signum].gotsig = 0;
485
486	for (w = signals [signum].head; w; w = w->next)
487	event (EV_A_ (W)w, EV_SIGNAL);
488	}
489	}	685	}
490		686
491	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
492	siginit (EV_P)	700	siginit (EV_P)
493	{	701	{
494	#ifndef WIN32	702	fd_intern (sigpipe [0]);
495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498	/* rather than sort out wether we really need nb, set it */
499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501	#endif
502		704
503	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
504	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
505	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
506	}	708	}
507		709
508	/*****************************************************************************/	710	/*****************************************************************************/
509		711
		712	static ev_child *childs [PID_HASHSIZE];
		713
510	#ifndef WIN32	714	#ifndef _WIN32
511		715
512	static struct ev_child *childs [PID_HASHSIZE];
513	static struct ev_signal childev;	716	static ev_signal childev;
514		717
515	#ifndef WCONTINUED	718	#ifndef WCONTINUED
516	# define WCONTINUED 0	719	# define WCONTINUED 0
517	#endif	720	#endif
518		721
519	static void	722	void inline_speed
520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
521	{	724	{
522	struct ev_child *w;	725	ev_child *w;
523		726
524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
525	if (w->pid == pid || !w->pid)	728	if (w->pid == pid || !w->pid)
526	{	729	{
527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528	w->rpid = pid;	731	w->rpid = pid;
529	w->rstatus = status;	732	w->rstatus = status;
530	event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
531	}	734	}
532	}	735	}
533		736
534	static void	737	static void
535	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
536	{	739	{
537	int pid, status;	740	int pid, status;
538		741
539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540	{	743	{
541	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
542	event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543		747
544	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
546	}	750	}
547	}	751	}
548		752
549	#endif	753	#endif
550		754
551	/*****************************************************************************/	755	/*****************************************************************************/
552		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
553	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
554	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
555	#endif	762	#endif
556	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
557	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
574	{	781	{
575	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
576	}	783	}
577		784
578	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
579	static int	786	int inline_size
580	enable_secure (void)	787	enable_secure (void)
581	{	788	{
582	#ifdef WIN32	789	#ifdef _WIN32
583	return 0;	790	return 0;
584	#else	791	#else
585	return getuid () != geteuid ()	792	return getuid () != geteuid ()
586	|| getgid () != getegid ();	793	|| getgid () != getegid ();
587	#endif	794	#endif
588	}	795	}
589		796
590	int	797	unsigned int
591	ev_method (EV_P)	798	ev_supported_backends (void)
592	{	799	{
593	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	| EVBACKEND_KQUEUE
		834	| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
594	}	841	}
595		842
596	static void	843	static void
597	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
598	{	845	{
599	if (!method)	846	if (!backend)
600	{	847	{
601	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
602	{	849	{
603	struct timespec ts;	850	struct timespec ts;
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	852	have_monotonic = 1;
606	}	853	}
607	#endif	854	#endif
608		855
609	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	857	mn_now = get_clock ();
611	now_floor = mn_now;	858	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
613		860
614	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else
618	methods = EVMETHOD_ANY;
619		865
620	method = 0;	866	if (!(flags & 0x0000ffffUL))
621	#if EV_USE_WIN32	867	flags |= ev_recommended_backends ();
622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623	#endif	872	#endif
624	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626	#endif	875	#endif
627	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629	#endif	878	#endif
630	#if EV_USE_POLL	879	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632	#endif	881	#endif
633	#if EV_USE_SELECT	882	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635	#endif	884	#endif
636	}
637	}
638		885
639	void	886	ev_init (&sigev, sigcb);
		887	ev_set_priority (&sigev, EV_MAXPRI);
		888	}
		889	}
		890
		891	static void
640	loop_destroy (EV_P)	892	loop_destroy (EV_P)
641	{	893	{
642	int i;	894	int i;
643		895
644	#if EV_USE_WIN32	896	#if EV_USE_PORT
645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
646	#endif	898	#endif
647	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
649	#endif	901	#endif
650	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
652	#endif	904	#endif
653	#if EV_USE_POLL	905	#if EV_USE_POLL
654	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
655	#endif	907	#endif
656	#if EV_USE_SELECT	908	#if EV_USE_SELECT
657	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
658	#endif	910	#endif
659		911
660	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
661	array_free (pending, [i]);	913	array_free (pending, [i]);
662		914
		915	/* have to use the microsoft-never-gets-it-right macro */
663	array_free (fdchange, );	916	array_free (fdchange, EMPTY0);
664	array_free (timer, );	917	array_free (timer, EMPTY0);
		918	#if EV_PERIODIC_ENABLE
665	array_free (periodic, );	919	array_free (periodic, EMPTY0);
		920	#endif
666	array_free (idle, );	921	array_free (idle, EMPTY0);
667	array_free (prepare, );	922	array_free (prepare, EMPTY0);
668	array_free (check, );	923	array_free (check, EMPTY0);
669		924
670	method = 0;	925	backend = 0;
671	/*TODO*/
672	}	926	}
673		927
674	void	928	static void
675	loop_fork (EV_P)	929	loop_fork (EV_P)
676	{	930	{
677	/*TODO*/	931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
678	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
680	#endif	939	#endif
681	#if EV_USE_KQUEUE	940
682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	941	if (ev_is_active (&sigev))
683	#endif	942	{
		943	/* default loop */
		944
		945	ev_ref (EV_A);
		946	ev_io_stop (EV_A_ &sigev);
		947	close (sigpipe [0]);
		948	close (sigpipe [1]);
		949
		950	while (pipe (sigpipe))
		951	syserr ("(libev) error creating pipe");
		952
		953	siginit (EV_A);
		954	}
		955
		956	postfork = 0;
684	}	957	}
685		958
686	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
687	struct ev_loop *	960	struct ev_loop *
688	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
689	{	962	{
690	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	963	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
691		964
		965	memset (loop, 0, sizeof (struct ev_loop));
		966
692	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
693		968
694	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
695	return loop;	970	return loop;
696		971
697	return 0;	972	return 0;
698	}	973	}
699		974
700	void	975	void
701	ev_loop_destroy (EV_P)	976	ev_loop_destroy (EV_P)
702	{	977	{
703	loop_destroy (EV_A);	978	loop_destroy (EV_A);
704	free (loop);	979	ev_free (loop);
705	}	980	}
706		981
707	void	982	void
708	ev_loop_fork (EV_P)	983	ev_loop_fork (EV_P)
709	{	984	{
710	loop_fork (EV_A);	985	postfork = 1;
711	}	986	}
712		987
713	#endif	988	#endif
714		989
715	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
716	struct ev_loop default_loop_struct;
717	static struct ev_loop *default_loop;
718
719	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
720	#else	993	#else
721	static int default_loop;
722
723	int	994	int
		995	ev_default_loop (unsigned int flags)
724	#endif	996	#endif
725	ev_default_loop (int methods)
726	{	997	{
727	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
728	if (pipe (sigpipe))	999	if (pipe (sigpipe))
729	return 0;	1000	return 0;
730		1001
731	if (!default_loop)	1002	if (!ev_default_loop_ptr)
732	{	1003	{
733	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
734	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
735	#else	1006	#else
736	default_loop = 1;	1007	ev_default_loop_ptr = 1;
737	#endif	1008	#endif
738		1009
739	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
740		1011
741	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
742	{	1013	{
743	ev_watcher_init (&sigev, sigcb);
744	ev_set_priority (&sigev, EV_MAXPRI);
745	siginit (EV_A);	1014	siginit (EV_A);
746		1015
747	#ifndef WIN32	1016	#ifndef _WIN32
748	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
749	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
750	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	#endif	1021	#endif
753	}	1022	}
754	else	1023	else
755	default_loop = 0;	1024	ev_default_loop_ptr = 0;
756	}	1025	}
757		1026
758	return default_loop;	1027	return ev_default_loop_ptr;
759	}	1028	}
760		1029
761	void	1030	void
762	ev_default_destroy (void)	1031	ev_default_destroy (void)
763	{	1032	{
764	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
765	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
766	#endif	1035	#endif
767		1036
		1037	#ifndef _WIN32
768	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
769	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
		1040	#endif
770		1041
771	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
772	ev_io_stop (EV_A_ &sigev);	1043	ev_io_stop (EV_A_ &sigev);
773		1044
774	close (sigpipe [0]); sigpipe [0] = 0;	1045	close (sigpipe [0]); sigpipe [0] = 0;
…		…
779		1050
780	void	1051	void
781	ev_default_fork (void)	1052	ev_default_fork (void)
782	{	1053	{
783	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
784	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
785	#endif	1056	#endif
786		1057
787	loop_fork (EV_A);	1058	if (backend)
788		1059	postfork = 1;
789	ev_io_stop (EV_A_ &sigev);
790	close (sigpipe [0]);
791	close (sigpipe [1]);
792	pipe (sigpipe);
793
794	ev_ref (EV_A); /* signal watcher */
795	siginit (EV_A);
796	}	1060	}
797		1061
798	/*****************************************************************************/	1062	/*****************************************************************************/
799		1063
800	static void	1064	int inline_size
		1065	any_pending (EV_P)
		1066	{
		1067	int pri;
		1068
		1069	for (pri = NUMPRI; pri--; )
		1070	if (pendingcnt [pri])
		1071	return 1;
		1072
		1073	return 0;
		1074	}
		1075
		1076	void inline_speed
801	call_pending (EV_P)	1077	call_pending (EV_P)
802	{	1078	{
803	int pri;	1079	int pri;
804		1080
805	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
806	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
807	{	1083	{
808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
809		1085
810	if (p->w)	1086	if (expect_true (p->w))
811	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
812	p->w->pending = 0;	1090	p->w->pending = 0;
813		1091	EV_CB_INVOKE (p->w, p->events);
814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
815	}	1092	}
816	}	1093	}
817	}	1094	}
818		1095
819	static void	1096	void inline_size
820	timers_reify (EV_P)	1097	timers_reify (EV_P)
821	{	1098	{
822	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
823	{	1100	{
824	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
825		1102
826	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
827		1104
828	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
829	if (w->repeat)	1106	if (w->repeat)
830	{	1107	{
831	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
832	((WT)w)->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
833	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
834	}	1115	}
835	else	1116	else
836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
837		1118
838	event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
839	}	1120	}
840	}	1121	}
841		1122
842	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
843	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
844	{	1126	{
845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
846	{	1128	{
847	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
848		1130
849	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
850		1132
851	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
852	if (w->interval)	1134	if (w->reschedule_cb)
853	{	1135	{
		1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1138	downheap ((WT *)periodics, periodiccnt, 0);
		1139	}
		1140	else if (w->interval)
		1141	{
854	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
855	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
856	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
857	}	1145	}
858	else	1146	else
859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
860		1148
861	event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
862	}	1150	}
863	}	1151	}
864		1152
865	static void	1153	static void noinline
866	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
867	{	1155	{
868	int i;	1156	int i;
869		1157
870	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
871	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
872	{	1160	{
873	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
874		1162
		1163	if (w->reschedule_cb)
		1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
875	if (w->interval)	1165	else if (w->interval)
876	{
877	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
878
879	if (fabs (diff) >= 1e-4)
880	{
881	ev_periodic_stop (EV_A_ w);
882	ev_periodic_start (EV_A_ w);
883
884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
885	}
886	}
887	}	1167	}
888	}
889		1168
890	inline int	1169	/* now rebuild the heap */
		1170	for (i = periodiccnt >> 1; i--; )
		1171	downheap ((WT *)periodics, periodiccnt, i);
		1172	}
		1173	#endif
		1174
		1175	int inline_size
891	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
892	{	1177	{
893	mn_now = get_clock ();	1178	mn_now = get_clock ();
894		1179
895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
896	{	1181	{
897	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
898	return 0;	1183	return 0;
899	}	1184	}
900	else	1185	else
901	{	1186	{
902	now_floor = mn_now;	1187	now_floor = mn_now;
903	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
904	return 1;	1189	return 1;
905	}	1190	}
906	}	1191	}
907		1192
908	static void	1193	void inline_size
909	time_update (EV_P)	1194	time_update (EV_P)
910	{	1195	{
911	int i;	1196	int i;
912		1197
913	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
915	{	1200	{
916	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
917	{	1202	{
918	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
919		1204
920	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
921	{	1214	{
922	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
923		1216
924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
925	return; /* all is well */	1218	return; /* all is well */
926		1219
927	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
928	mn_now = get_clock ();	1221	mn_now = get_clock ();
929	now_floor = mn_now;	1222	now_floor = mn_now;
930	}	1223	}
931		1224
		1225	# if EV_PERIODIC_ENABLE
932	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
933	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
934	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
935	}	1230	}
936	}	1231	}
937	else	1232	else
938	#endif	1233	#endif
939	{	1234	{
940	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
941		1236
942	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
943	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
944	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
945		1242
946	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
947	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
948	((WT)timers [i])->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
949	}	1246	}
950		1247
951	mn_now = rt_now;	1248	mn_now = ev_rt_now;
952	}	1249	}
953	}	1250	}
954		1251
955	void	1252	void
956	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
967	static int loop_done;	1264	static int loop_done;
968		1265
969	void	1266	void
970	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
971	{	1268	{
972	double block;
973	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
974		1272
975	do	1273	while (activecnt)
976	{	1274	{
977	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
978	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
979	{	1277	{
980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
981	call_pending (EV_A);	1279	call_pending (EV_A);
982	}	1280	}
983		1281
		1282	/* we might have forked, so reify kernel state if necessary */
		1283	if (expect_false (postfork))
		1284	loop_fork (EV_A);
		1285
984	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
985	fd_reify (EV_A);	1287	fd_reify (EV_A);
986		1288
987	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
988		1292
989	/* we only need this for !monotonic clockor timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK || idlecnt)
990	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
991	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
992	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
993	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
994	else	1301	else
995	#endif	1302	#endif
996	{	1303	{
997	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
998	mn_now = rt_now;	1305	mn_now = ev_rt_now;
999	}	1306	}
1000		1307
1001	if (flags & EVLOOP_NONBLOCK || idlecnt)
1002	block = 0.;
1003	else
1004	{
1005	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1006		1309
1007	if (timercnt)	1310	if (timercnt)
1008	{	1311	{
1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1010	if (block > to) block = to;	1313	if (block > to) block = to;
1011	}	1314	}
1012		1315
		1316	#if EV_PERIODIC_ENABLE
1013	if (periodiccnt)	1317	if (periodiccnt)
1014	{	1318	{
1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1016	if (block > to) block = to;	1320	if (block > to) block = to;
1017	}	1321	}
		1322	#endif
1018		1323
1019	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1020	}	1325	}
1021		1326
1022	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1023		1329
1024	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1025	time_update (EV_A);	1331	time_update (EV_A);
1026		1332
1027	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1028	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1029	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1030		1338
1031	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1032	if (!pendingcnt)	1340	if (idlecnt && !any_pending (EV_A))
1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1034		1342
1035	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1036	if (checkcnt)	1344	if (expect_false (checkcnt))
1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1038		1346
1039	call_pending (EV_A);	1347	call_pending (EV_A);
1040	}
1041	while (activecnt && !loop_done);
1042		1348
1043	if (loop_done != 2)	1349	if (expect_false (loop_done))
1044	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1045	}	1355	}
1046		1356
1047	void	1357	void
1048	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1049	{	1359	{
1050	loop_done = how;	1360	loop_done = how;
1051	}	1361	}
1052		1362
1053	/*****************************************************************************/	1363	/*****************************************************************************/
1054		1364
1055	inline void	1365	void inline_size
1056	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1057	{	1367	{
1058	elem->next = *head;	1368	elem->next = *head;
1059	*head = elem;	1369	*head = elem;
1060	}	1370	}
1061		1371
1062	inline void	1372	void inline_size
1063	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1064	{	1374	{
1065	while (*head)	1375	while (*head)
1066	{	1376	{
1067	if (*head == elem)	1377	if (*head == elem)
…		…
1072		1382
1073	head = &(*head)->next;	1383	head = &(*head)->next;
1074	}	1384	}
1075	}	1385	}
1076		1386
1077	inline void	1387	void inline_speed
1078	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1079	{	1389	{
1080	if (w->pending)	1390	if (w->pending)
1081	{	1391	{
1082	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1083	w->pending = 0;	1393	w->pending = 0;
1084	}	1394	}
1085	}	1395	}
1086		1396
1087	inline void	1397	void inline_speed
1088	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1089	{	1399	{
1090	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1091	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1092		1402
1093	w->active = active;	1403	w->active = active;
1094	ev_ref (EV_A);	1404	ev_ref (EV_A);
1095	}	1405	}
1096		1406
1097	inline void	1407	void inline_size
1098	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1099	{	1409	{
1100	ev_unref (EV_A);	1410	ev_unref (EV_A);
1101	w->active = 0;	1411	w->active = 0;
1102	}	1412	}
1103		1413
1104	/*****************************************************************************/	1414	/*****************************************************************************/
1105		1415
1106	void	1416	void
1107	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1108	{	1418	{
1109	int fd = w->fd;	1419	int fd = w->fd;
1110		1420
1111	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1112	return;	1422	return;
1113		1423
1114	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1115		1425
1116	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1119		1429
1120	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1121	}	1431	}
1122		1432
1123	void	1433	void
1124	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1125	{	1435	{
1126	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1127	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1128	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1129		1441
1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1131	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1132		1444
1133	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1134	}	1446	}
1135		1447
1136	void	1448	void
1137	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1138	{	1450	{
1139	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1140	return;	1452	return;
1141		1453
1142	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1143		1455
1144	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1145		1457
1146	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1147	array_needsize (timers, timermax, timercnt, );	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1148	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1149	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1150		1462
1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1152	}	1464	}
1153		1465
1154	void	1466	void
1155	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1156	{	1468	{
1157	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1158	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1159	return;	1471	return;
1160		1472
1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1162		1474
1163	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1164	{	1476	{
1165	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1167	}	1479	}
1168		1480
1169	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1170		1482
1171	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1172	}	1484	}
1173		1485
1174	void	1486	void
1175	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1176	{	1488	{
1177	if (ev_is_active (w))	1489	if (ev_is_active (w))
1178	{	1490	{
1179	if (w->repeat)	1491	if (w->repeat)
1180	{	1492	{
1181	((WT)w)->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183	}	1495	}
1184	else	1496	else
1185	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1186	}	1498	}
1187	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1188	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1189	}	1504	}
1190		1505
		1506	#if EV_PERIODIC_ENABLE
1191	void	1507	void
1192	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1193	{	1509	{
1194	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1195	return;	1511	return;
1196		1512
		1513	if (w->reschedule_cb)
		1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1515	else if (w->interval)
		1516	{
1197	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1198
1199	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1200	if (w->interval)
1201	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1520	}
1202		1521
1203	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1204	array_needsize (periodics, periodicmax, periodiccnt, );	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1205	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1206	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1207		1526
1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1209	}	1528	}
1210		1529
1211	void	1530	void
1212	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1213	{	1532	{
1214	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1215	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1216	return;	1535	return;
1217		1536
1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1219		1538
1220	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1221	{	1540	{
1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1224	}	1543	}
1225		1544
1226	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1227	}	1546	}
1228		1547
1229	void	1548	void
		1549	ev_periodic_again (EV_P_ ev_periodic *w)
		1550	{
		1551	/* TODO: use adjustheap and recalculation */
		1552	ev_periodic_stop (EV_A_ w);
		1553	ev_periodic_start (EV_A_ w);
		1554	}
		1555	#endif
		1556
		1557	void
1230	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1231	{	1559	{
1232	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1233	return;	1561	return;
1234		1562
1235	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1236	array_needsize (idles, idlemax, idlecnt, );	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1237	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1238	}	1566	}
1239		1567
1240	void	1568	void
1241	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1242	{	1570	{
1243	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1244	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1245	return;	1573	return;
1246		1574
		1575	{
		1576	int active = ((W)w)->active;
1247	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1248	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1249	}	1582	}
1250		1583
1251	void	1584	void
1252	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1253	{	1586	{
1254	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1255	return;	1588	return;
1256		1589
1257	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1258	array_needsize (prepares, preparemax, preparecnt, );	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1259	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1260	}	1593	}
1261		1594
1262	void	1595	void
1263	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1264	{	1597	{
1265	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1266	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1267	return;	1600	return;
1268		1601
		1602	{
		1603	int active = ((W)w)->active;
1269	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1270	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1271	}	1609	}
1272		1610
1273	void	1611	void
1274	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1275	{	1613	{
1276	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1277	return;	1615	return;
1278		1616
1279	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1280	array_needsize (checks, checkmax, checkcnt, );	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1281	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1282	}	1620	}
1283		1621
1284	void	1622	void
1285	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1286	{	1624	{
1287	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1289	return;	1627	return;
1290		1628
		1629	{
		1630	int active = ((W)w)->active;
1291	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1292	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1293	}	1636	}
1294		1637
1295	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1296	# define SA_RESTART 0	1639	# define SA_RESTART 0
1297	#endif	1640	#endif
1298		1641
1299	void	1642	void
1300	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1301	{	1644	{
1302	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304	#endif	1647	#endif
1305	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1306	return;	1649	return;
1307		1650
1308	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1309		1652
1310	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1311	array_needsize (signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1313		1656
1314	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1315	{	1658	{
		1659	#if _WIN32
		1660	signal (w->signum, sighandler);
		1661	#else
1316	struct sigaction sa;	1662	struct sigaction sa;
1317	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1318	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
1319	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1665	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1320	sigaction (w->signum, &sa, 0);	1666	sigaction (w->signum, &sa, 0);
		1667	#endif
1321	}	1668	}
1322	}	1669	}
1323		1670
1324	void	1671	void
1325	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1326	{	1673	{
1327	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1328	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1329	return;	1676	return;
1330		1677
1331	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1332	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1333		1680
1334	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1335	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1336	}	1683	}
1337		1684
1338	void	1685	void
1339	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1340	{	1687	{
1341	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1342	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1343	#endif	1690	#endif
1344	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1345	return;	1692	return;
1346		1693
1347	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1348	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1349	}	1696	}
1350		1697
1351	void	1698	void
1352	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1353	{	1700	{
1354	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1355	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1356	return;	1703	return;
1357		1704
1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1359	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1360	}	1707	}
1361		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1362	/*****************************************************************************/	1819	/*****************************************************************************/
1363		1820
1364	struct ev_once	1821	struct ev_once
1365	{	1822	{
1366	struct ev_io io;	1823	ev_io io;
1367	struct ev_timer to;	1824	ev_timer to;
1368	void (*cb)(int revents, void *arg);	1825	void (*cb)(int revents, void *arg);
1369	void *arg;	1826	void *arg;
1370	};	1827	};
1371		1828
1372	static void	1829	static void
…		…
1375	void (*cb)(int revents, void *arg) = once->cb;	1832	void (*cb)(int revents, void *arg) = once->cb;
1376	void *arg = once->arg;	1833	void *arg = once->arg;
1377		1834
1378	ev_io_stop (EV_A_ &once->io);	1835	ev_io_stop (EV_A_ &once->io);
1379	ev_timer_stop (EV_A_ &once->to);	1836	ev_timer_stop (EV_A_ &once->to);
1380	free (once);	1837	ev_free (once);
1381		1838
1382	cb (revents, arg);	1839	cb (revents, arg);
1383	}	1840	}
1384		1841
1385	static void	1842	static void
1386	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1387	{	1844	{
1388	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1389	}	1846	}
1390		1847
1391	static void	1848	static void
1392	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1393	{	1850	{
1394	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1395	}	1852	}
1396		1853
1397	void	1854	void
1398	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1399	{	1856	{
1400	struct ev_once *once = malloc (sizeof (struct ev_once));	1857	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1401		1858
1402	if (!once)	1859	if (expect_false (!once))
		1860	{
1403	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1861	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1404	else	1862	return;
1405	{	1863	}
		1864
1406	once->cb = cb;	1865	once->cb = cb;
1407	once->arg = arg;	1866	once->arg = arg;
1408		1867
1409	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1410	if (fd >= 0)	1869	if (fd >= 0)
1411	{	1870	{
1412	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1413	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1414	}	1873	}
1415		1874
1416	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1417	if (timeout >= 0.)	1876	if (timeout >= 0.)
1418	{	1877	{
1419	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1420	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1421	}
1422	}	1880	}
1423	}	1881	}
1424		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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