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

Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.142 by root, Tue Nov 27 06:19:08 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
		228	static void (syserr_cb)(const char msg);
		229
		230	void
		231	ev_set_syserr_cb (void (cb)(const char msg))
		232	{
		233	syserr_cb = cb;
		234	}
		235
		236	static void noinline
		237	syserr (const char *msg)
		238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
		242	if (syserr_cb)
		243	syserr_cb (msg);
		244	else
		245	{
		246	perror (msg);
		247	abort ();
		248	}
		249	}
		250
		251	static void (alloc)(void *ptr, long size);
		252
		253	void
		254	ev_set_allocator (void (cb)(void *ptr, long size))
		255	{
		256	alloc = cb;
		257	}
		258
		259	static void *
		260	ev_realloc (void *ptr, long size)
		261	{
		262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		263
		264	if (!ptr && size)
		265	{
		266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		267	abort ();
		268	}
		269
		270	return ptr;
		271	}
		272
		273	#define ev_malloc(size) ev_realloc (0, (size))
		274	#define ev_free(ptr) ev_realloc ((ptr), 0)
		275
		276	/*****************************************************************************/
		277
158	typedef struct	278	typedef struct
159	{	279	{
160	struct ev_watcher_list *head;	280	WL head;
161	unsigned char events;	281	unsigned char events;
162	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
163	} ANFD;	286	} ANFD;
164		287
165	typedef struct	288	typedef struct
166	{	289	{
167	W w;	290	W w;
168	int events;	291	int events;
169	} ANPENDING;	292	} ANPENDING;
170		293
171	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
172		295
173	struct ev_loop	296	struct ev_loop
174	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
175	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
176	# include "ev_vars.h"	301	#include "ev_vars.h"
177	};
178	# undef VAR	302	#undef VAR
		303	};
179	# 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;
180		308
181	#else	309	#else
182		310
		311	ev_tstamp ev_rt_now;
183	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
184	# include "ev_vars.h"	313	#include "ev_vars.h"
185	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
186		317
187	#endif	318	#endif
188		319
189	/*****************************************************************************/	320	/*****************************************************************************/
190		321
191	inline ev_tstamp	322	ev_tstamp
192	ev_time (void)	323	ev_time (void)
193	{	324	{
194	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
195	struct timespec ts;	326	struct timespec ts;
196	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
200	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
201	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
202	#endif	333	#endif
203	}	334	}
204		335
205	inline ev_tstamp	336	ev_tstamp inline_size
206	get_clock (void)	337	get_clock (void)
207	{	338	{
208	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
209	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
210	{	341	{
…		…
215	#endif	346	#endif
216		347
217	return ev_time ();	348	return ev_time ();
218	}	349	}
219		350
		351	#if EV_MULTIPLICITY
220	ev_tstamp	352	ev_tstamp
221	ev_now (EV_P)	353	ev_now (EV_P)
222	{	354	{
223	return rt_now;	355	return ev_rt_now;
224	}	356	}
		357	#endif
225		358
226	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
227		360
228	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
229	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
230	{ \	363	{ \
231	int newcnt = cur; \	364	int newcnt = cur; \
232	do \	365	do \
233	{ \	366	{ \
234	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
235	} \	368	} \
236	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
237	\	370	\
238	base = realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
239	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
240	cur = newcnt; \	373	cur = newcnt; \
241	}	374	}
242		375
243	#define array_slim(stem) \	376	#define array_slim(type,stem) \
244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245	{ \	378	{ \
246	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
247	base = realloc (base, sizeof (base) (stem ## max)); \	380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
249	}	382	}
250		383
251	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253		386
254	/*****************************************************************************/	387	/*****************************************************************************/
255		388
256	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
257	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
258	{	419	{
259	while (count--)	420	while (count--)
260	{	421	{
261	base->head = 0;	422	base->head = 0;
…		…
264		425
265	++base;	426	++base;
266	}	427	}
267	}	428	}
268		429
269	static void	430	void inline_speed
270	event (EV_P_ W w, int events)
271	{
272	if (w->pending)
273	{
274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
275	return;
276	}
277
278	w->pending = ++pendingcnt [ABSPRI (w)];
279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280	pendings [ABSPRI (w)][w->pending - 1].w = w;
281	pendings [ABSPRI (w)][w->pending - 1].events = events;
282	}
283
284	static void
285	queue_events (EV_P_ W *events, int eventcnt, int type)
286	{
287	int i;
288
289	for (i = 0; i < eventcnt; ++i)
290	event (EV_A_ events [i], type);
291	}
292
293	static void
294	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
295	{	432	{
296	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
297	struct ev_io *w;	434	ev_io *w;
298		435
299	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)
300	{	437	{
301	int ev = w->events & events;	438	int ev = w->events & revents;
302		439
303	if (ev)	440	if (ev)
304	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
305	}	442	}
306	}	443	}
307		444
308	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
309		450
310	static void	451	void inline_size
311	fd_reify (EV_P)	452	fd_reify (EV_P)
312	{	453	{
313	int i;	454	int i;
314		455
315	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
316	{	457	{
317	int fd = fdchanges [i];	458	int fd = fdchanges [i];
318	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
319	struct ev_io *w;	460	ev_io *w;
320		461
321	int events = 0;	462	int events = 0;
322		463
323	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)
324	events \|= w->events;	465	events \|= w->events;
325		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
326	anfd->reify = 0;	476	anfd->reify = 0;
327		477
328	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
329	anfd->events = events;	479	anfd->events = events;
330	}	480	}
331		481
332	fdchangecnt = 0;	482	fdchangecnt = 0;
333	}	483	}
334		484
335	static void	485	void inline_size
336	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
337	{	487	{
338	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
339	return;	489	return;
340		490
341	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
342		492
343	++fdchangecnt;	493	++fdchangecnt;
344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
346	}	496	}
347		497
348	static void	498	void inline_speed
349	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
350	{	500	{
351	struct ev_io *w;	501	ev_io *w;
352		502
353	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
354	{	504	{
355	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
356	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);
357	}	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
358	}	518	}
359		519
360	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
361	static void	521	static void noinline
362	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
363	{	523	{
364	int fd;	524	int fd;
365		525
366	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
367	if (anfds [fd].events)	527	if (anfds [fd].events)
368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
369	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
370	}	530	}
371		531
372	/* 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 */
373	static void	533	static void noinline
374	fd_enomem (EV_P)	534	fd_enomem (EV_P)
375	{	535	{
376	int fd;	536	int fd;
377		537
378	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
379	if (anfds [fd].events)	539	if (anfds [fd].events)
380	{	540	{
381	close (fd);
382	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
383	return;	542	return;
384	}	543	}
385	}	544	}
386		545
387	/* susually 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 */
388	static void	547	static void noinline
389	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
390	{	549	{
391	int fd;	550	int fd;
392		551
393	/* 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 */
…		…
399	}	558	}
400	}	559	}
401		560
402	/*****************************************************************************/	561	/*****************************************************************************/
403		562
404	static void	563	void inline_speed
405	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
406	{	565	{
407	WT w = heap [k];	566	WT w = heap [k];
408		567
409	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
416	heap [k] = w;	575	heap [k] = w;
417	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
418		577
419	}	578	}
420		579
421	static void	580	void inline_speed
422	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
423	{	582	{
424	WT w = heap [k];	583	WT w = heap [k];
425		584
426	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
440		599
441	heap [k] = w;	600	heap [k] = w;
442	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
443	}	602	}
444		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
445	/*****************************************************************************/	611	/*****************************************************************************/
446		612
447	typedef struct	613	typedef struct
448	{	614	{
449	struct ev_watcher_list *head;	615	WL head;
450	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
451	} ANSIG;	617	} ANSIG;
452		618
453	static ANSIG *signals;	619	static ANSIG *signals;
454	static int signalmax;	620	static int signalmax;
455		621
456	static int sigpipe [2];	622	static int sigpipe [2];
457	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
458	static struct ev_io sigev;	624	static ev_io sigev;
459		625
460	static void	626	void inline_size
461	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
462	{	628	{
463	while (count--)	629	while (count--)
464	{	630	{
465	base->head = 0;	631	base->head = 0;
…		…
470	}	636	}
471		637
472	static void	638	static void
473	sighandler (int signum)	639	sighandler (int signum)
474	{	640	{
475	#if WIN32	641	#if _WIN32
476	signal (signum, sighandler);	642	signal (signum, sighandler);
477	#endif	643	#endif
478		644
479	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
480		646
…		…
485	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
486	errno = old_errno;	652	errno = old_errno;
487	}	653	}
488	}	654	}
489		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
490	static void	676	static void
491	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
492	{	678	{
493	struct ev_watcher_list *w;
494	int signum;	679	int signum;
495		680
496	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
497	gotsig = 0;	682	gotsig = 0;
498		683
499	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
500	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
501	{	686	ev_feed_signal_event (EV_A_ signum + 1);
502	signals [signum].gotsig = 0;
503
504	for (w = signals [signum].head; w; w = w->next)
505	event (EV_A_ (W)w, EV_SIGNAL);
506	}
507	}	687	}
508		688
509	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
510	siginit (EV_P)	702	siginit (EV_P)
511	{	703	{
512	#ifndef WIN32	704	fd_intern (sigpipe [0]);
513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516	/* rather than sort out wether we really need nb, set it */
517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519	#endif
520		706
521	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
522	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
523	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
524	}	710	}
525		711
526	/*****************************************************************************/	712	/*****************************************************************************/
527		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
528	#ifndef WIN32	716	#ifndef _WIN32
529		717
530	static struct ev_child *childs [PID_HASHSIZE];
531	static struct ev_signal childev;	718	static ev_signal childev;
532		719
533	#ifndef WCONTINUED	720	void inline_speed
534	# define WCONTINUED 0
535	#endif
536
537	static void
538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
539	{	722	{
540	struct ev_child *w;	723	ev_child *w;
541		724
542	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
543	if (w->pid == pid \|\| !w->pid)	726	if (w->pid == pid \|\| !w->pid)
544	{	727	{
545	ev_priority (w) = ev_priority (sw); /* need to do it now */	728	ev_priority (w) = ev_priority (sw); /* need to do it now */
546	w->rpid = pid;	729	w->rpid = pid;
547	w->rstatus = status;	730	w->rstatus = status;
548	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
549	}	732	}
550	}	733	}
551		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
552	static void	739	static void
553	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
554	{	741	{
555	int pid, status;	742	int pid, status;
556		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
558	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
559	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* we need to do it this way so that the callback gets called before we continue */
560	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561		754
562	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564	}
565	}	757	}
566		758
567	#endif	759	#endif
568		760
569	/*****************************************************************************/	761	/*****************************************************************************/
570		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
571	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
572	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
573	#endif	768	#endif
574	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
575	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
592	{	787	{
593	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
594	}	789	}
595		790
596	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
597	static int	792	int inline_size
598	enable_secure (void)	793	enable_secure (void)
599	{	794	{
600	#ifdef WIN32	795	#ifdef _WIN32
601	return 0;	796	return 0;
602	#else	797	#else
603	return getuid () != geteuid ()	798	return getuid () != geteuid ()
604	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
605	#endif	800	#endif
606	}	801	}
607		802
608	int	803	unsigned int
609	ev_method (EV_P)	804	ev_supported_backends (void)
610	{	805	{
611	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	\| EVBACKEND_KQUEUE
		840	\| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
612	}	847	}
613		848
614	static void	849	static void
615	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
616	{	851	{
617	if (!method)	852	if (!backend)
618	{	853	{
619	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
620	{	855	{
621	struct timespec ts;	856	struct timespec ts;
622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623	have_monotonic = 1;	858	have_monotonic = 1;
624	}	859	}
625	#endif	860	#endif
626		861
627	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
628	mn_now = get_clock ();	863	mn_now = get_clock ();
629	now_floor = mn_now;	864	now_floor = mn_now;
630	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
631		866
632	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
633	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
634	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
635	else
636	methods = EVMETHOD_ANY;
637		871
638	method = 0;	872	if (!(flags & 0x0000ffffUL))
639	#if EV_USE_WIN32	873	flags \|= ev_recommended_backends ();
640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641	#endif	878	#endif
642	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644	#endif	881	#endif
645	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647	#endif	884	#endif
648	#if EV_USE_POLL	885	#if EV_USE_POLL
649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650	#endif	887	#endif
651	#if EV_USE_SELECT	888	#if EV_USE_SELECT
652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653	#endif	890	#endif
654	}
655	}
656		891
657	void	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
658	loop_destroy (EV_P)	898	loop_destroy (EV_P)
659	{	899	{
660	int i;	900	int i;
661		901
662	#if EV_USE_WIN32	902	#if EV_USE_PORT
663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664	#endif	904	#endif
665	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667	#endif	907	#endif
668	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670	#endif	910	#endif
671	#if EV_USE_POLL	911	#if EV_USE_POLL
672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673	#endif	913	#endif
674	#if EV_USE_SELECT	914	#if EV_USE_SELECT
675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676	#endif	916	#endif
677		917
678	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
679	array_free (pending, [i]);	919	array_free (pending, [i]);
680		920
		921	/* have to use the microsoft-never-gets-it-right macro */
681	array_free (fdchange, );	922	array_free (fdchange, EMPTY0);
682	array_free (timer, );	923	array_free (timer, EMPTY0);
		924	#if EV_PERIODIC_ENABLE
683	array_free (periodic, );	925	array_free (periodic, EMPTY0);
		926	#endif
684	array_free (idle, );	927	array_free (idle, EMPTY0);
685	array_free (prepare, );	928	array_free (prepare, EMPTY0);
686	array_free (check, );	929	array_free (check, EMPTY0);
687		930
688	method = 0;	931	backend = 0;
689	/TODO/
690	}	932	}
691		933
692	void	934	static void
693	loop_fork (EV_P)	935	loop_fork (EV_P)
694	{	936	{
695	/TODO/	937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
696	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698	#endif	945	#endif
699	#if EV_USE_KQUEUE	946
700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	947	if (ev_is_active (&sigev))
701	#endif	948	{
		949	/* default loop */
		950
		951	ev_ref (EV_A);
		952	ev_io_stop (EV_A_ &sigev);
		953	close (sigpipe [0]);
		954	close (sigpipe [1]);
		955
		956	while (pipe (sigpipe))
		957	syserr ("(libev) error creating pipe");
		958
		959	siginit (EV_A);
		960	}
		961
		962	postfork = 0;
702	}	963	}
703		964
704	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
705	struct ev_loop *	966	struct ev_loop *
706	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
707	{	968	{
708	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	969	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
709		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
710	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
711		974
712	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
713	return loop;	976	return loop;
714		977
715	return 0;	978	return 0;
716	}	979	}
717		980
718	void	981	void
719	ev_loop_destroy (EV_P)	982	ev_loop_destroy (EV_P)
720	{	983	{
721	loop_destroy (EV_A);	984	loop_destroy (EV_A);
722	free (loop);	985	ev_free (loop);
723	}	986	}
724		987
725	void	988	void
726	ev_loop_fork (EV_P)	989	ev_loop_fork (EV_P)
727	{	990	{
728	loop_fork (EV_A);	991	postfork = 1;
729	}	992	}
730		993
731	#endif	994	#endif
732		995
733	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
734	struct ev_loop default_loop_struct;
735	static struct ev_loop *default_loop;
736
737	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
738	#else	999	#else
739	static int default_loop;
740
741	int	1000	int
		1001	ev_default_loop (unsigned int flags)
742	#endif	1002	#endif
743	ev_default_loop (int methods)
744	{	1003	{
745	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
746	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
747	return 0;	1006	return 0;
748		1007
749	if (!default_loop)	1008	if (!ev_default_loop_ptr)
750	{	1009	{
751	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
752	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753	#else	1012	#else
754	default_loop = 1;	1013	ev_default_loop_ptr = 1;
755	#endif	1014	#endif
756		1015
757	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
758		1017
759	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
760	{	1019	{
761	ev_watcher_init (&sigev, sigcb);
762	ev_set_priority (&sigev, EV_MAXPRI);
763	siginit (EV_A);	1020	siginit (EV_A);
764		1021
765	#ifndef WIN32	1022	#ifndef _WIN32
766	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
767	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
768	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
769	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
770	#endif	1027	#endif
771	}	1028	}
772	else	1029	else
773	default_loop = 0;	1030	ev_default_loop_ptr = 0;
774	}	1031	}
775		1032
776	return default_loop;	1033	return ev_default_loop_ptr;
777	}	1034	}
778		1035
779	void	1036	void
780	ev_default_destroy (void)	1037	ev_default_destroy (void)
781	{	1038	{
782	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
783	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
784	#endif	1041	#endif
785		1042
		1043	#ifndef _WIN32
786	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
787	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
788		1047
789	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
790	ev_io_stop (EV_A_ &sigev);	1049	ev_io_stop (EV_A_ &sigev);
791		1050
792	close (sigpipe [0]); sigpipe [0] = 0;	1051	close (sigpipe [0]); sigpipe [0] = 0;
…		…
797		1056
798	void	1057	void
799	ev_default_fork (void)	1058	ev_default_fork (void)
800	{	1059	{
801	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
802	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
803	#endif	1062	#endif
804		1063
805	loop_fork (EV_A);	1064	if (backend)
806		1065	postfork = 1;
807	ev_io_stop (EV_A_ &sigev);
808	close (sigpipe [0]);
809	close (sigpipe [1]);
810	pipe (sigpipe);
811
812	ev_ref (EV_A); /* signal watcher */
813	siginit (EV_A);
814	}	1066	}
815		1067
816	/*****************************************************************************/	1068	/*****************************************************************************/
817		1069
818	static void	1070	int inline_size
		1071	any_pending (EV_P)
		1072	{
		1073	int pri;
		1074
		1075	for (pri = NUMPRI; pri--; )
		1076	if (pendingcnt [pri])
		1077	return 1;
		1078
		1079	return 0;
		1080	}
		1081
		1082	void inline_speed
819	call_pending (EV_P)	1083	call_pending (EV_P)
820	{	1084	{
821	int pri;	1085	int pri;
822		1086
823	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
824	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
825	{	1089	{
826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827		1091
828	if (p->w)	1092	if (expect_true (p->w))
829	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
830	p->w->pending = 0;	1096	p->w->pending = 0;
831	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
832	}	1098	}
833	}	1099	}
834	}	1100	}
835		1101
836	static void	1102	void inline_size
837	timers_reify (EV_P)	1103	timers_reify (EV_P)
838	{	1104	{
839	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
840	{	1106	{
841	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
842		1108
843	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
844		1110
845	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
846	if (w->repeat)	1112	if (w->repeat)
847	{	1113	{
848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1115
849	((WT)w)->at = mn_now + w->repeat;	1116	((WT)w)->at += w->repeat;
		1117	if (((WT)w)->at < mn_now)
		1118	((WT)w)->at = mn_now;
		1119
850	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
851	}	1121	}
852	else	1122	else
853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854		1124
855	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856	}	1126	}
857	}	1127	}
858		1128
859	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
860	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
861	{	1132	{
862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863	{	1134	{
864	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
865		1136
866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
867		1138
868	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
869	if (w->interval)	1140	if (w->reschedule_cb)
870	{	1141	{
		1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1144	downheap ((WT *)periodics, periodiccnt, 0);
		1145	}
		1146	else if (w->interval)
		1147	{
871	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
873	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
874	}	1151	}
875	else	1152	else
876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877		1154
878	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879	}	1156	}
880	}	1157	}
881		1158
882	static void	1159	static void noinline
883	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
884	{	1161	{
885	int i;	1162	int i;
886		1163
887	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
888	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
889	{	1166	{
890	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
891		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892	if (w->interval)	1171	else if (w->interval)
893	{
894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
895
896	if (fabs (diff) >= 1e-4)
897	{
898	ev_periodic_stop (EV_A_ w);
899	ev_periodic_start (EV_A_ w);
900
901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
902	}
903	}
904	}	1173	}
905	}
906		1174
907	inline int	1175	/* now rebuild the heap */
		1176	for (i = periodiccnt >> 1; i--; )
		1177	downheap ((WT *)periodics, periodiccnt, i);
		1178	}
		1179	#endif
		1180
		1181	int inline_size
908	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
909	{	1183	{
910	mn_now = get_clock ();	1184	mn_now = get_clock ();
911		1185
912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913	{	1187	{
914	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
915	return 0;	1189	return 0;
916	}	1190	}
917	else	1191	else
918	{	1192	{
919	now_floor = mn_now;	1193	now_floor = mn_now;
920	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
921	return 1;	1195	return 1;
922	}	1196	}
923	}	1197	}
924		1198
925	static void	1199	void inline_size
926	time_update (EV_P)	1200	time_update (EV_P)
927	{	1201	{
928	int i;	1202	int i;
929		1203
930	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
932	{	1206	{
933	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
934	{	1208	{
935	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
936		1210
937	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
938	{	1220	{
939	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
940		1222
941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942	return; /* all is well */	1224	return; /* all is well */
943		1225
944	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1227	mn_now = get_clock ();
946	now_floor = mn_now;	1228	now_floor = mn_now;
947	}	1229	}
948		1230
		1231	# if EV_PERIODIC_ENABLE
949	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
950	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952	}	1236	}
953	}	1237	}
954	else	1238	else
955	#endif	1239	#endif
956	{	1240	{
957	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
958		1242
959	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
961	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
962		1248
963	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
964	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
965	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
966	}	1252	}
967		1253
968	mn_now = rt_now;	1254	mn_now = ev_rt_now;
969	}	1255	}
970	}	1256	}
971		1257
972	void	1258	void
973	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
984	static int loop_done;	1270	static int loop_done;
985		1271
986	void	1272	void
987	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
988	{	1274	{
989	double block;
990	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
991		1278
992	do	1279	while (activecnt)
993	{	1280	{
994	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
995	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
996	{	1283	{
997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998	call_pending (EV_A);	1285	call_pending (EV_A);
999	}	1286	}
1000		1287
		1288	/* we might have forked, so reify kernel state if necessary */
		1289	if (expect_false (postfork))
		1290	loop_fork (EV_A);
		1291
1001	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1002	fd_reify (EV_A);	1293	fd_reify (EV_A);
1003		1294
1004	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1005		1298
1006	/* we only need this for !monotonic clockor timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1007	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1008	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1009	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1010	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1011	else	1307	else
1012	#endif	1308	#endif
1013	{	1309	{
1014	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1015	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1016	}	1312	}
1017		1313
1018	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1019	block = 0.;
1020	else
1021	{
1022	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1023		1315
1024	if (timercnt)	1316	if (timercnt)
1025	{	1317	{
1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027	if (block > to) block = to;	1319	if (block > to) block = to;
1028	}	1320	}
1029		1321
		1322	#if EV_PERIODIC_ENABLE
1030	if (periodiccnt)	1323	if (periodiccnt)
1031	{	1324	{
1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033	if (block > to) block = to;	1326	if (block > to) block = to;
1034	}	1327	}
		1328	#endif
1035		1329
1036	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1037	}	1331	}
1038		1332
1039	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1040		1335
1041	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1042	time_update (EV_A);	1337	time_update (EV_A);
1043		1338
1044	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1045	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1046	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1047		1344
1048	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1049	if (!pendingcnt)	1346	if (idlecnt && !any_pending (EV_A))
1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1051		1348
1052	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1053	if (checkcnt)	1350	if (expect_false (checkcnt))
1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055		1352
1056	call_pending (EV_A);	1353	call_pending (EV_A);
1057	}
1058	while (activecnt && !loop_done);
1059		1354
1060	if (loop_done != 2)	1355	if (expect_false (loop_done))
1061	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1062	}	1361	}
1063		1362
1064	void	1363	void
1065	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1066	{	1365	{
1067	loop_done = how;	1366	loop_done = how;
1068	}	1367	}
1069		1368
1070	/*****************************************************************************/	1369	/*****************************************************************************/
1071		1370
1072	inline void	1371	void inline_size
1073	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1074	{	1373	{
1075	elem->next = *head;	1374	elem->next = *head;
1076	*head = elem;	1375	*head = elem;
1077	}	1376	}
1078		1377
1079	inline void	1378	void inline_size
1080	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1081	{	1380	{
1082	while (*head)	1381	while (*head)
1083	{	1382	{
1084	if (*head == elem)	1383	if (*head == elem)
…		…
1089		1388
1090	head = &(*head)->next;	1389	head = &(*head)->next;
1091	}	1390	}
1092	}	1391	}
1093		1392
1094	inline void	1393	void inline_speed
1095	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1096	{	1395	{
1097	if (w->pending)	1396	if (w->pending)
1098	{	1397	{
1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100	w->pending = 0;	1399	w->pending = 0;
1101	}	1400	}
1102	}	1401	}
1103		1402
1104	inline void	1403	void inline_speed
1105	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1106	{	1405	{
1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109		1408
1110	w->active = active;	1409	w->active = active;
1111	ev_ref (EV_A);	1410	ev_ref (EV_A);
1112	}	1411	}
1113		1412
1114	inline void	1413	void inline_size
1115	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1116	{	1415	{
1117	ev_unref (EV_A);	1416	ev_unref (EV_A);
1118	w->active = 0;	1417	w->active = 0;
1119	}	1418	}
1120		1419
1121	/*****************************************************************************/	1420	/*****************************************************************************/
1122		1421
1123	void	1422	void
1124	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1125	{	1424	{
1126	int fd = w->fd;	1425	int fd = w->fd;
1127		1426
1128	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1129	return;	1428	return;
1130		1429
1131	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1132		1431
1133	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1136		1435
1137	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1138	}	1437	}
1139		1438
1140	void	1439	void
1141	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1142	{	1441	{
1143	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1144	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1145	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1146		1447
1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1148	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1149		1450
1150	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1151	}	1452	}
1152		1453
1153	void	1454	void
1154	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1155	{	1456	{
1156	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1157	return;	1458	return;
1158		1459
1159	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1160		1461
1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162		1463
1163	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1164	array_needsize (timers, timermax, timercnt, );	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1165	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1166	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1167		1468
1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1169	}	1470	}
1170		1471
1171	void	1472	void
1172	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1173	{	1474	{
1174	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1175	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1176	return;	1477	return;
1177		1478
1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1179		1480
1180	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1181	{	1482	{
1182	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1184	}	1485	}
1185		1486
1186	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1187		1488
1188	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1189	}	1490	}
1190		1491
1191	void	1492	void
1192	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1193	{	1494	{
1194	if (ev_is_active (w))	1495	if (ev_is_active (w))
1195	{	1496	{
1196	if (w->repeat)	1497	if (w->repeat)
1197	{	1498	{
1198	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1200	}	1501	}
1201	else	1502	else
1202	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1203	}	1504	}
1204	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1205	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1206	}	1510	}
1207		1511
		1512	#if EV_PERIODIC_ENABLE
1208	void	1513	void
1209	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1210	{	1515	{
1211	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1212	return;	1517	return;
1213		1518
		1519	if (w->reschedule_cb)
		1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1521	else if (w->interval)
		1522	{
1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1215
1216	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1217	if (w->interval)
1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1526	}
1219		1527
1220	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1221	array_needsize (periodics, periodicmax, periodiccnt, );	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1222	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1223	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1224		1532
1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1226	}	1534	}
1227		1535
1228	void	1536	void
1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1230	{	1538	{
1231	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1232	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1233	return;	1541	return;
1234		1542
1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1236		1544
1237	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1238	{	1546	{
1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1241	}	1549	}
1242		1550
1243	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1244	}	1552	}
1245		1553
1246	void	1554	void
		1555	ev_periodic_again (EV_P_ ev_periodic *w)
		1556	{
		1557	/* TODO: use adjustheap and recalculation */
		1558	ev_periodic_stop (EV_A_ w);
		1559	ev_periodic_start (EV_A_ w);
		1560	}
		1561	#endif
		1562
		1563	void
1247	ev_idle_start (EV_P_ struct ev_idle *w)	1564	ev_idle_start (EV_P_ ev_idle *w)
1248	{	1565	{
1249	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1250	return;	1567	return;
1251		1568
1252	ev_start (EV_A_ (W)w, ++idlecnt);	1569	ev_start (EV_A_ (W)w, ++idlecnt);
1253	array_needsize (idles, idlemax, idlecnt, );	1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1254	idles [idlecnt - 1] = w;	1571	idles [idlecnt - 1] = w;
1255	}	1572	}
1256		1573
1257	void	1574	void
1258	ev_idle_stop (EV_P_ struct ev_idle *w)	1575	ev_idle_stop (EV_P_ ev_idle *w)
1259	{	1576	{
1260	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1261	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1262	return;	1579	return;
1263		1580
		1581	{
		1582	int active = ((W)w)->active;
1264	idles [((W)w)->active - 1] = idles [--idlecnt];	1583	idles [active - 1] = idles [--idlecnt];
		1584	((W)idles [active - 1])->active = active;
		1585	}
		1586
1265	ev_stop (EV_A_ (W)w);	1587	ev_stop (EV_A_ (W)w);
1266	}	1588	}
1267		1589
1268	void	1590	void
1269	ev_prepare_start (EV_P_ struct ev_prepare *w)	1591	ev_prepare_start (EV_P_ ev_prepare *w)
1270	{	1592	{
1271	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1272	return;	1594	return;
1273		1595
1274	ev_start (EV_A_ (W)w, ++preparecnt);	1596	ev_start (EV_A_ (W)w, ++preparecnt);
1275	array_needsize (prepares, preparemax, preparecnt, );	1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1276	prepares [preparecnt - 1] = w;	1598	prepares [preparecnt - 1] = w;
1277	}	1599	}
1278		1600
1279	void	1601	void
1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1281	{	1603	{
1282	ev_clear_pending (EV_A_ (W)w);	1604	ev_clear_pending (EV_A_ (W)w);
1283	if (ev_is_active (w))	1605	if (expect_false (!ev_is_active (w)))
1284	return;	1606	return;
1285		1607
		1608	{
		1609	int active = ((W)w)->active;
1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1610	prepares [active - 1] = prepares [--preparecnt];
		1611	((W)prepares [active - 1])->active = active;
		1612	}
		1613
1287	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1288	}	1615	}
1289		1616
1290	void	1617	void
1291	ev_check_start (EV_P_ struct ev_check *w)	1618	ev_check_start (EV_P_ ev_check *w)
1292	{	1619	{
1293	if (ev_is_active (w))	1620	if (expect_false (ev_is_active (w)))
1294	return;	1621	return;
1295		1622
1296	ev_start (EV_A_ (W)w, ++checkcnt);	1623	ev_start (EV_A_ (W)w, ++checkcnt);
1297	array_needsize (checks, checkmax, checkcnt, );	1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1298	checks [checkcnt - 1] = w;	1625	checks [checkcnt - 1] = w;
1299	}	1626	}
1300		1627
1301	void	1628	void
1302	ev_check_stop (EV_P_ struct ev_check *w)	1629	ev_check_stop (EV_P_ ev_check *w)
1303	{	1630	{
1304	ev_clear_pending (EV_A_ (W)w);	1631	ev_clear_pending (EV_A_ (W)w);
1305	if (ev_is_active (w))	1632	if (expect_false (!ev_is_active (w)))
1306	return;	1633	return;
1307		1634
		1635	{
		1636	int active = ((W)w)->active;
1308	checks [((W)w)->active - 1] = checks [--checkcnt];	1637	checks [active - 1] = checks [--checkcnt];
		1638	((W)checks [active - 1])->active = active;
		1639	}
		1640
1309	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1310	}	1642	}
1311		1643
1312	#ifndef SA_RESTART	1644	#ifndef SA_RESTART
1313	# define SA_RESTART 0	1645	# define SA_RESTART 0
1314	#endif	1646	#endif
1315		1647
1316	void	1648	void
1317	ev_signal_start (EV_P_ struct ev_signal *w)	1649	ev_signal_start (EV_P_ ev_signal *w)
1318	{	1650	{
1319	#if EV_MULTIPLICITY	1651	#if EV_MULTIPLICITY
1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321	#endif	1653	#endif
1322	if (ev_is_active (w))	1654	if (expect_false (ev_is_active (w)))
1323	return;	1655	return;
1324		1656
1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326		1658
1327	ev_start (EV_A_ (W)w, 1);	1659	ev_start (EV_A_ (W)w, 1);
1328	array_needsize (signals, signalmax, w->signum, signals_init);	1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330		1662
1331	if (!((WL)w)->next)	1663	if (!((WL)w)->next)
1332	{	1664	{
1333	#if WIN32	1665	#if _WIN32
1334	signal (w->signum, sighandler);	1666	signal (w->signum, sighandler);
1335	#else	1667	#else
1336	struct sigaction sa;	1668	struct sigaction sa;
1337	sa.sa_handler = sighandler;	1669	sa.sa_handler = sighandler;
1338	sigfillset (&sa.sa_mask);	1670	sigfillset (&sa.sa_mask);
…		…
1341	#endif	1673	#endif
1342	}	1674	}
1343	}	1675	}
1344		1676
1345	void	1677	void
1346	ev_signal_stop (EV_P_ struct ev_signal *w)	1678	ev_signal_stop (EV_P_ ev_signal *w)
1347	{	1679	{
1348	ev_clear_pending (EV_A_ (W)w);	1680	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))	1681	if (expect_false (!ev_is_active (w)))
1350	return;	1682	return;
1351		1683
1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1353	ev_stop (EV_A_ (W)w);	1685	ev_stop (EV_A_ (W)w);
1354		1686
1355	if (!signals [w->signum - 1].head)	1687	if (!signals [w->signum - 1].head)
1356	signal (w->signum, SIG_DFL);	1688	signal (w->signum, SIG_DFL);
1357	}	1689	}
1358		1690
1359	void	1691	void
1360	ev_child_start (EV_P_ struct ev_child *w)	1692	ev_child_start (EV_P_ ev_child *w)
1361	{	1693	{
1362	#if EV_MULTIPLICITY	1694	#if EV_MULTIPLICITY
1363	assert (("child watchers are only supported in the default loop", loop == default_loop));	1695	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364	#endif	1696	#endif
1365	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1366	return;	1698	return;
1367		1699
1368	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1370	}	1702	}
1371		1703
1372	void	1704	void
1373	ev_child_stop (EV_P_ struct ev_child *w)	1705	ev_child_stop (EV_P_ ev_child *w)
1374	{	1706	{
1375	ev_clear_pending (EV_A_ (W)w);	1707	ev_clear_pending (EV_A_ (W)w);
1376	if (ev_is_active (w))	1708	if (expect_false (!ev_is_active (w)))
1377	return;	1709	return;
1378		1710
1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1380	ev_stop (EV_A_ (W)w);	1712	ev_stop (EV_A_ (W)w);
1381	}	1713	}
1382		1714
		1715	#if EV_EMBED_ENABLE
		1716	void noinline
		1717	ev_embed_sweep (EV_P_ ev_embed *w)
		1718	{
		1719	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1720	}
		1721
		1722	static void
		1723	embed_cb (EV_P_ ev_io *io, int revents)
		1724	{
		1725	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1726
		1727	if (ev_cb (w))
		1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1729	else
		1730	ev_embed_sweep (loop, w);
		1731	}
		1732
		1733	void
		1734	ev_embed_start (EV_P_ ev_embed *w)
		1735	{
		1736	if (expect_false (ev_is_active (w)))
		1737	return;
		1738
		1739	{
		1740	struct ev_loop *loop = w->loop;
		1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1743	}
		1744
		1745	ev_set_priority (&w->io, ev_priority (w));
		1746	ev_io_start (EV_A_ &w->io);
		1747
		1748	ev_start (EV_A_ (W)w, 1);
		1749	}
		1750
		1751	void
		1752	ev_embed_stop (EV_P_ ev_embed *w)
		1753	{
		1754	ev_clear_pending (EV_A_ (W)w);
		1755	if (expect_false (!ev_is_active (w)))
		1756	return;
		1757
		1758	ev_io_stop (EV_A_ &w->io);
		1759
		1760	ev_stop (EV_A_ (W)w);
		1761	}
		1762	#endif
		1763
		1764	#if EV_STAT_ENABLE
		1765
		1766	# ifdef _WIN32
		1767	# define lstat(a,b) stat(a,b)
		1768	# endif
		1769
		1770	void
		1771	ev_stat_stat (EV_P_ ev_stat *w)
		1772	{
		1773	if (lstat (w->path, &w->attr) < 0)
		1774	w->attr.st_nlink = 0;
		1775	else if (!w->attr.st_nlink)
		1776	w->attr.st_nlink = 1;
		1777	}
		1778
		1779	static void
		1780	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1781	{
		1782	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1783
		1784	/* we copy this here each the time so that */
		1785	/* prev has the old value when the callback gets invoked */
		1786	w->prev = w->attr;
		1787	ev_stat_stat (EV_A_ w);
		1788
		1789	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1790	ev_feed_event (EV_A_ w, EV_STAT);
		1791	}
		1792
		1793	void
		1794	ev_stat_start (EV_P_ ev_stat *w)
		1795	{
		1796	if (expect_false (ev_is_active (w)))
		1797	return;
		1798
		1799	/* since we use memcmp, we need to clear any padding data etc. */
		1800	memset (&w->prev, 0, sizeof (ev_statdata));
		1801	memset (&w->attr, 0, sizeof (ev_statdata));
		1802
		1803	ev_stat_stat (EV_A_ w);
		1804
		1805	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1806	ev_set_priority (&w->timer, ev_priority (w));
		1807	ev_timer_start (EV_A_ &w->timer);
		1808
		1809	ev_start (EV_A_ (W)w, 1);
		1810	}
		1811
		1812	void
		1813	ev_stat_stop (EV_P_ ev_stat *w)
		1814	{
		1815	ev_clear_pending (EV_A_ (W)w);
		1816	if (expect_false (!ev_is_active (w)))
		1817	return;
		1818
		1819	ev_timer_stop (EV_A_ &w->timer);
		1820
		1821	ev_stop (EV_A_ (W)w);
		1822	}
		1823	#endif
		1824
1383	/*****************************************************************************/	1825	/*****************************************************************************/
1384		1826
1385	struct ev_once	1827	struct ev_once
1386	{	1828	{
1387	struct ev_io io;	1829	ev_io io;
1388	struct ev_timer to;	1830	ev_timer to;
1389	void (cb)(int revents, void arg);	1831	void (cb)(int revents, void arg);
1390	void *arg;	1832	void *arg;
1391	};	1833	};
1392		1834
1393	static void	1835	static void
…		…
1396	void (cb)(int revents, void arg) = once->cb;	1838	void (cb)(int revents, void arg) = once->cb;
1397	void *arg = once->arg;	1839	void *arg = once->arg;
1398		1840
1399	ev_io_stop (EV_A_ &once->io);	1841	ev_io_stop (EV_A_ &once->io);
1400	ev_timer_stop (EV_A_ &once->to);	1842	ev_timer_stop (EV_A_ &once->to);
1401	free (once);	1843	ev_free (once);
1402		1844
1403	cb (revents, arg);	1845	cb (revents, arg);
1404	}	1846	}
1405		1847
1406	static void	1848	static void
1407	once_cb_io (EV_P_ struct ev_io *w, int revents)	1849	once_cb_io (EV_P_ ev_io *w, int revents)
1408	{	1850	{
1409	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1410	}	1852	}
1411		1853
1412	static void	1854	static void
1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1855	once_cb_to (EV_P_ ev_timer *w, int revents)
1414	{	1856	{
1415	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1857	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1416	}	1858	}
1417		1859
1418	void	1860	void
1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1861	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1420	{	1862	{
1421	struct ev_once *once = malloc (sizeof (struct ev_once));	1863	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1422		1864
1423	if (!once)	1865	if (expect_false (!once))
		1866	{
1424	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1867	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1425	else	1868	return;
1426	{	1869	}
		1870
1427	once->cb = cb;	1871	once->cb = cb;
1428	once->arg = arg;	1872	once->arg = arg;
1429		1873
1430	ev_watcher_init (&once->io, once_cb_io);	1874	ev_init (&once->io, once_cb_io);
1431	if (fd >= 0)	1875	if (fd >= 0)
1432	{	1876	{
1433	ev_io_set (&once->io, fd, events);	1877	ev_io_set (&once->io, fd, events);
1434	ev_io_start (EV_A_ &once->io);	1878	ev_io_start (EV_A_ &once->io);
1435	}	1879	}
1436		1880
1437	ev_watcher_init (&once->to, once_cb_to);	1881	ev_init (&once->to, once_cb_to);
1438	if (timeout >= 0.)	1882	if (timeout >= 0.)
1439	{	1883	{
1440	ev_timer_set (&once->to, timeout, 0.);	1884	ev_timer_set (&once->to, timeout, 0.);
1441	ev_timer_start (EV_A_ &once->to);	1885	ev_timer_start (EV_A_ &once->to);
1442	}
1443	}	1886	}
1444	}	1887	}
1445		1888
		1889	#ifdef __cplusplus
		1890	}
		1891	#endif
		1892

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Comparing libev/ev.c (file contents): Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs. Revision 1.142 by root, Tue Nov 27 06:19:08 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.142 by root, Tue Nov 27 06:19:08 2007 UTC