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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.147 by root, Tue Nov 27 10:59:11 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>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# 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
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# 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
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#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) */
127	#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) */
128	#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 */
129	/*#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 */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# 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
135	# 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
136	#else	200	#else
137	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
138	# define inline static	203	# define inline_size static
		204	# define noinline
139	#endif	205	#endif
140		206
141	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
143		209
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
147	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
150		219
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		221
153	#if WIN32	222	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	224	#endif
211		225
212	/*****************************************************************************/	226	/*****************************************************************************/
213		227
214	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
215		229
		230	void
216	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
217	{	232	{
218	syserr_cb = cb;	233	syserr_cb = cb;
219	}	234	}
220		235
221	static void	236	static void noinline
222	syserr (const char *msg)	237	syserr (const char *msg)
223	{	238	{
224	if (!msg)	239	if (!msg)
225	msg = "(libev) system error";	240	msg = "(libev) system error";
226		241
…		…
233	}	248	}
234	}	249	}
235		250
236	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
237		252
		253	void
238	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
239	{	255	{
240	alloc = cb;	256	alloc = cb;
241	}	257	}
242		258
243	static void *	259	static void *
…		…
262	typedef struct	278	typedef struct
263	{	279	{
264	WL head;	280	WL head;
265	unsigned char events;	281	unsigned char events;
266	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
267	} ANFD;	286	} ANFD;
268		287
269	typedef struct	288	typedef struct
270	{	289	{
271	W w;	290	W w;
272	int events;	291	int events;
273	} ANPENDING;	292	} ANPENDING;
274		293
275	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
276		295
277	struct ev_loop	296	struct ev_loop
278	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	301	#include "ev_vars.h"
281	};
282	# undef VAR	302	#undef VAR
		303	};
283	# 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;
284		308
285	#else	309	#else
286		310
		311	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	313	#include "ev_vars.h"
289	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
290		317
291	#endif	318	#endif
292		319
293	/*****************************************************************************/	320	/*****************************************************************************/
294		321
295	inline ev_tstamp	322	ev_tstamp
296	ev_time (void)	323	ev_time (void)
297	{	324	{
298	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
299	struct timespec ts;	326	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
304	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
305	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
306	#endif	333	#endif
307	}	334	}
308		335
309	inline ev_tstamp	336	ev_tstamp inline_size
310	get_clock (void)	337	get_clock (void)
311	{	338	{
312	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
313	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
314	{	341	{
…		…
319	#endif	346	#endif
320		347
321	return ev_time ();	348	return ev_time ();
322	}	349	}
323		350
		351	#if EV_MULTIPLICITY
324	ev_tstamp	352	ev_tstamp
325	ev_now (EV_P)	353	ev_now (EV_P)
326	{	354	{
327	return rt_now;	355	return ev_rt_now;
328	}	356	}
		357	#endif
329		358
330	#define array_roundsize(base,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
331		360
332	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
334	{ \	363	{ \
335	int newcnt = cur; \	364	int newcnt = cur; \
336	do \	365	do \
337	{ \	366	{ \
338	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
339	} \	368	} \
340	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
341	\	370	\
342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
343	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
344	cur = newcnt; \	373	cur = newcnt; \
345	}	374	}
346		375
347	#define array_slim(stem) \	376	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	378	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353	}	382	}
354
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		383
360	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
362		386
363	/*****************************************************************************/	387	/*****************************************************************************/
364		388
365	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
366	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
367	{	419	{
368	while (count--)	420	while (count--)
369	{	421	{
370	base->head = 0;	422	base->head = 0;
…		…
373		425
374	++base;	426	++base;
375	}	427	}
376	}	428	}
377		429
378	static void	430	void inline_speed
379	event (EV_P_ W w, int events)
380	{
381	if (w->pending)
382	{
383	pendings [ABSPRI (w)][w->pending - 1].events |= events;
384	return;
385	}
386
387	w->pending = ++pendingcnt [ABSPRI (w)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389	pendings [ABSPRI (w)][w->pending - 1].w = w;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;
391	}
392
393	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{
396	int i;
397
398	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);
400	}
401
402	static void
403	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
404	{	432	{
405	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	434	ev_io *w;
407		435
408	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)
409	{	437	{
410	int ev = w->events & events;	438	int ev = w->events & revents;
411		439
412	if (ev)	440	if (ev)
413	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
414	}	442	}
415	}	443	}
416		444
417	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
418		450
419	static void	451	void inline_size
420	fd_reify (EV_P)	452	fd_reify (EV_P)
421	{	453	{
422	int i;	454	int i;
423		455
424	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
425	{	457	{
426	int fd = fdchanges [i];	458	int fd = fdchanges [i];
427	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
428	struct ev_io *w;	460	ev_io *w;
429		461
430	int events = 0;	462	int events = 0;
431		463
432	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)
433	events |= w->events;	465	events |= w->events;
434		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
435	anfd->reify = 0;	476	anfd->reify = 0;
436		477
437	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	479	anfd->events = events;
439	}	480	}
440		481
441	fdchangecnt = 0;	482	fdchangecnt = 0;
442	}	483	}
443		484
444	static void	485	void inline_size
445	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
446	{	487	{
447	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
448	return;	489	return;
449		490
450	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
451		492
452	++fdchangecnt;	493	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
455	}	496	}
456		497
457	static void	498	void inline_speed
458	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
459	{	500	{
460	struct ev_io *w;	501	ev_io *w;
461		502
462	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
463	{	504	{
464	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
465	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);
466	}	507	}
467	}	508	}
468		509
469	static int	510	int inline_size
470	fd_valid (int fd)	511	fd_valid (int fd)
471	{	512	{
472	#ifdef WIN32	513	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
474	#else	515	#else
475	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
476	#endif	517	#endif
477	}	518	}
478		519
479	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
480	static void	521	static void noinline
481	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
482	{	523	{
483	int fd;	524	int fd;
484		525
485	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
487	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
488	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
489	}	530	}
490		531
491	/* 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 */
492	static void	533	static void noinline
493	fd_enomem (EV_P)	534	fd_enomem (EV_P)
494	{	535	{
495	int fd;	536	int fd;
496		537
497	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
500	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
501	return;	542	return;
502	}	543	}
503	}	544	}
504		545
505	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
506	static void	547	static void noinline
507	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
508	{	549	{
509	int fd;	550	int fd;
510		551
511	/* 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 */
…		…
517	}	558	}
518	}	559	}
519		560
520	/*****************************************************************************/	561	/*****************************************************************************/
521		562
522	static void	563	void inline_speed
523	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
524	{	565	{
525	WT w = heap [k];	566	WT w = heap [k];
526		567
527	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
534	heap [k] = w;	575	heap [k] = w;
535	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
536		577
537	}	578	}
538		579
539	static void	580	void inline_speed
540	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
541	{	582	{
542	WT w = heap [k];	583	WT w = heap [k];
543		584
544	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
558		599
559	heap [k] = w;	600	heap [k] = w;
560	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
561	}	602	}
562		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
563	/*****************************************************************************/	611	/*****************************************************************************/
564		612
565	typedef struct	613	typedef struct
566	{	614	{
567	WL head;	615	WL head;
…		…
571	static ANSIG *signals;	619	static ANSIG *signals;
572	static int signalmax;	620	static int signalmax;
573		621
574	static int sigpipe [2];	622	static int sigpipe [2];
575	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
576	static struct ev_io sigev;	624	static ev_io sigev;
577		625
578	static void	626	void inline_size
579	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
580	{	628	{
581	while (count--)	629	while (count--)
582	{	630	{
583	base->head = 0;	631	base->head = 0;
…		…
588	}	636	}
589		637
590	static void	638	static void
591	sighandler (int signum)	639	sighandler (int signum)
592	{	640	{
593	#if WIN32	641	#if _WIN32
594	signal (signum, sighandler);	642	signal (signum, sighandler);
595	#endif	643	#endif
596		644
597	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
598		646
…		…
603	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	652	errno = old_errno;
605	}	653	}
606	}	654	}
607		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
608	static void	676	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
610	{	678	{
611	WL w;
612	int signum;	679	int signum;
613		680
614	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	682	gotsig = 0;
616		683
617	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
619	{	686	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;
621
622	for (w = signals [signum].head; w; w = w->next)
623	event (EV_A_ (W)w, EV_SIGNAL);
624	}
625	}	687	}
626		688
627	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
628	siginit (EV_P)	702	siginit (EV_P)
629	{	703	{
630	#ifndef WIN32	704	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		706
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	710	}
643		711
644	/*****************************************************************************/	712	/*****************************************************************************/
645		713
646	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
647		715
648	#ifndef WIN32	716	#ifndef _WIN32
649		717
650	static struct ev_signal childev;	718	static ev_signal childev;
651		719
652	#ifndef WCONTINUED	720	void inline_speed
653	# define WCONTINUED 0
654	#endif
655
656	static void
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658	{	722	{
659	struct ev_child *w;	723	ev_child *w;
660		724
661	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)
662	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
663	{	727	{
664	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665	w->rpid = pid;	729	w->rpid = pid;
666	w->rstatus = status;	730	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	732	}
669	}	733	}
670		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
671	static void	739	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
673	{	741	{
674	int pid, status;	742	int pid, status;
675		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
678	/* 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 */
679	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		754
681	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
682	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 */
683	}
684	}	757	}
685		758
686	#endif	759	#endif
687		760
688	/*****************************************************************************/	761	/*****************************************************************************/
689		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
690	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
692	#endif	768	#endif
693	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
711	{	787	{
712	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
713	}	789	}
714		790
715	/* 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 */
716	static int	792	int inline_size
717	enable_secure (void)	793	enable_secure (void)
718	{	794	{
719	#ifdef WIN32	795	#ifdef _WIN32
720	return 0;	796	return 0;
721	#else	797	#else
722	return getuid () != geteuid ()	798	return getuid () != geteuid ()
723	|| getgid () != getegid ();	799	|| getgid () != getegid ();
724	#endif	800	#endif
725	}	801	}
726		802
727	int	803	unsigned int
728	ev_method (EV_P)	804	ev_supported_backends (void)
729	{	805	{
730	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;
731	}	847	}
732		848
733	static void	849	static void
734	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
735	{	851	{
736	if (!method)	852	if (!backend)
737	{	853	{
738	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
739	{	855	{
740	struct timespec ts;	856	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	858	have_monotonic = 1;
743	}	859	}
744	#endif	860	#endif
745		861
746	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	863	mn_now = get_clock ();
748	now_floor = mn_now;	864	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
750		866
751	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		871
757	method = 0;	872	if (!(flags & 0x0000ffffUL))
758	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
759	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);
760	#endif	878	#endif
761	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	881	#endif
764	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	884	#endif
767	#if EV_USE_POLL	885	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	887	#endif
770	#if EV_USE_SELECT	888	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	890	#endif
773		891
774	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
776	}	894	}
777	}	895	}
778		896
779	void	897	static void
780	loop_destroy (EV_P)	898	loop_destroy (EV_P)
781	{	899	{
782	int i;	900	int i;
783		901
784	#if EV_USE_WIN32	902	#if EV_USE_PORT
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	904	#endif
787	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	907	#endif
790	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	910	#endif
793	#if EV_USE_POLL	911	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	913	#endif
796	#if EV_USE_SELECT	914	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	916	#endif
799		917
800	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	919	array_free (pending, [i]);
802		920
803	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	926	#endif
809	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
810		930
811	method = 0;	931	backend = 0;
812	}	932	}
813		933
814	static void	934	static void
815	loop_fork (EV_P)	935	loop_fork (EV_P)
816	{	936	{
		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
817	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif
820	#if EV_USE_KQUEUE
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
822	#endif	945	#endif
823		946
824	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
825	{	948	{
826	/* default loop */	949	/* default loop */
…		…
828	ev_ref (EV_A);	951	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	952	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	953	close (sigpipe [0]);
831	close (sigpipe [1]);	954	close (sigpipe [1]);
832		955
833	while (ev_pipe (sigpipe))	956	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	957	syserr ("(libev) error creating pipe");
835		958
836	siginit (EV_A);	959	siginit (EV_A);
837	}	960	}
838		961
839	postfork = 0;	962	postfork = 0;
840	}	963	}
841		964
842	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
843	struct ev_loop *	966	struct ev_loop *
844	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
845	{	968	{
846	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847		970
848	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
849		972
850	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
851		974
852	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
853	return loop;	976	return loop;
854		977
855	return 0;	978	return 0;
856	}	979	}
857		980
…		…
869	}	992	}
870		993
871	#endif	994	#endif
872		995
873	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
878	#else	999	#else
879	static int default_loop;
880
881	int	1000	int
		1001	ev_default_loop (unsigned int flags)
882	#endif	1002	#endif
883	ev_default_loop (int methods)
884	{	1003	{
885	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	1005	if (pipe (sigpipe))
887	return 0;	1006	return 0;
888		1007
889	if (!default_loop)	1008	if (!ev_default_loop_ptr)
890	{	1009	{
891	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1012	#else
894	default_loop = 1;	1013	ev_default_loop_ptr = 1;
895	#endif	1014	#endif
896		1015
897	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
898		1017
899	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
900	{	1019	{
901	siginit (EV_A);	1020	siginit (EV_A);
902		1021
903	#ifndef WIN32	1022	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1027	#endif
909	}	1028	}
910	else	1029	else
911	default_loop = 0;	1030	ev_default_loop_ptr = 0;
912	}	1031	}
913		1032
914	return default_loop;	1033	return ev_default_loop_ptr;
915	}	1034	}
916		1035
917	void	1036	void
918	ev_default_destroy (void)	1037	ev_default_destroy (void)
919	{	1038	{
920	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1041	#endif
923		1042
924	#ifndef WIN32	1043	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
927	#endif	1046	#endif
928		1047
929	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
937		1056
938	void	1057	void
939	ev_default_fork (void)	1058	ev_default_fork (void)
940	{	1059	{
941	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1062	#endif
944		1063
945	if (method)	1064	if (backend)
946	postfork = 1;	1065	postfork = 1;
947	}	1066	}
948		1067
949	/*****************************************************************************/	1068	/*****************************************************************************/
950		1069
951	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
952	call_pending (EV_P)	1083	call_pending (EV_P)
953	{	1084	{
954	int pri;	1085	int pri;
955		1086
956	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
958	{	1089	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1091
961	if (p->w)	1092	if (expect_true (p->w))
962	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
963	p->w->pending = 0;	1096	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
965	}	1098	}
966	}	1099	}
967	}	1100	}
968		1101
969	static void	1102	void inline_size
970	timers_reify (EV_P)	1103	timers_reify (EV_P)
971	{	1104	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1106	{
974	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
975		1108
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
977		1110
978	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
979	if (w->repeat)	1112	if (w->repeat)
980	{	1113	{
981	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
982	((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
983	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
984	}	1121	}
985	else	1122	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1124
988	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1126	}
990	}	1127	}
991		1128
992	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
993	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
994	{	1132	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1134	{
997	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
998		1136
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1000		1138
1001	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1002	if (w->interval)	1140	if (w->reschedule_cb)
1003	{	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	{
1004	((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;
1005	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));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1151	}
1008	else	1152	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1154
1011	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1156	}
1013	}	1157	}
1014		1158
1015	static void	1159	static void noinline
1016	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1017	{	1161	{
1018	int i;	1162	int i;
1019		1163
1020	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1022	{	1166	{
1023	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1024		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1171	else if (w->interval)
1026	{
1027	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;
1028
1029	if (fabs (diff) >= 1e-4)
1030	{
1031	ev_periodic_stop (EV_A_ w);
1032	ev_periodic_start (EV_A_ w);
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}
1036	}
1037	}	1173	}
1038	}
1039		1174
1040	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
1041	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1042	{	1183	{
1043	mn_now = get_clock ();	1184	mn_now = get_clock ();
1044		1185
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1187	{
1047	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1189	return 0;
1049	}	1190	}
1050	else	1191	else
1051	{	1192	{
1052	now_floor = mn_now;	1193	now_floor = mn_now;
1053	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1054	return 1;	1195	return 1;
1055	}	1196	}
1056	}	1197	}
1057		1198
1058	static void	1199	void inline_size
1059	time_update (EV_P)	1200	time_update (EV_P)
1060	{	1201	{
1061	int i;	1202	int i;
1062		1203
1063	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1065	{	1206	{
1066	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1067	{	1208	{
1068	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1069		1210
1070	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; )
1071	{	1220	{
1072	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1073		1222
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1224	return; /* all is well */
1076		1225
1077	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1227	mn_now = get_clock ();
1079	now_floor = mn_now;	1228	now_floor = mn_now;
1080	}	1229	}
1081		1230
		1231	# if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1236	}
1086	}	1237	}
1087	else	1238	else
1088	#endif	1239	#endif
1089	{	1240	{
1090	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1091		1242
1092	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))
1093	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1094	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1095		1248
1096	/* 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 */
1097	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1252	}
1100		1253
1101	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1102	}	1255	}
1103	}	1256	}
1104		1257
1105	void	1258	void
1106	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1117	static int loop_done;	1270	static int loop_done;
1118		1271
1119	void	1272	void
1120	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1121	{	1274	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1124		1278
1125	do	1279	while (activecnt)
1126	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	if (expect_false (postfork))
		1283	if (forkcnt)
		1284	{
		1285	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1286	call_pending (EV_A);
		1287	}
		1288
1127	/* queue check watchers (and execute them) */	1289	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1290	if (expect_false (preparecnt))
1129	{	1291	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131	call_pending (EV_A);	1293	call_pending (EV_A);
…		…
1137		1299
1138	/* update fd-related kernel structures */	1300	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1301	fd_reify (EV_A);
1140		1302
1141	/* calculate blocking time */	1303	/* calculate blocking time */
		1304	{
		1305	double block;
1142		1306
1143	/* we only need this for !monotonic clockor timers, but as we basically	1307	if (flags & EVLOOP_NONBLOCK || idlecnt)
1144	always have timers, we just calculate it always */	1308	block = 0.; /* do not block at all */
		1309	else
		1310	{
		1311	/* update time to cancel out callback processing overhead */
1145	#if EV_USE_MONOTONIC	1312	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1313	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1314	time_update_monotonic (EV_A);
1148	else	1315	else
1149	#endif	1316	#endif
1150	{	1317	{
1151	rt_now = ev_time ();	1318	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1319	mn_now = ev_rt_now;
1153	}	1320	}
1154		1321
1155	if (flags & EVLOOP_NONBLOCK || idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1322	block = MAX_BLOCKTIME;
1160		1323
1161	if (timercnt)	1324	if (timercnt)
1162	{	1325	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1326	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1327	if (block > to) block = to;
1165	}	1328	}
1166		1329
		1330	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1331	if (periodiccnt)
1168	{	1332	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1333	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1334	if (block > to) block = to;
1171	}	1335	}
		1336	#endif
1172		1337
1173	if (block < 0.) block = 0.;	1338	if (expect_false (block < 0.)) block = 0.;
1174	}	1339	}
1175		1340
1176	method_poll (EV_A_ block);	1341	backend_poll (EV_A_ block);
		1342	}
1177		1343
1178	/* update rt_now, do magic */	1344	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1345	time_update (EV_A);
1180		1346
1181	/* queue pending timers and reschedule them */	1347	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1348	timers_reify (EV_A); /* relative timers called last */
		1349	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1350	periodics_reify (EV_A); /* absolute timers called first */
		1351	#endif
1184		1352
1185	/* queue idle watchers unless io or timers are pending */	1353	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1354	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1356
1189	/* queue check watchers, to be executed first */	1357	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1358	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1360
1193	call_pending (EV_A);	1361	call_pending (EV_A);
1194	}
1195	while (activecnt && !loop_done);
1196		1362
1197	if (loop_done != 2)	1363	if (expect_false (loop_done))
1198	loop_done = 0;	1364	break;
		1365	}
		1366
		1367	if (loop_done == EVUNLOOP_ONE)
		1368	loop_done = EVUNLOOP_CANCEL;
1199	}	1369	}
1200		1370
1201	void	1371	void
1202	ev_unloop (EV_P_ int how)	1372	ev_unloop (EV_P_ int how)
1203	{	1373	{
1204	loop_done = how;	1374	loop_done = how;
1205	}	1375	}
1206		1376
1207	/*****************************************************************************/	1377	/*****************************************************************************/
1208		1378
1209	inline void	1379	void inline_size
1210	wlist_add (WL *head, WL elem)	1380	wlist_add (WL *head, WL elem)
1211	{	1381	{
1212	elem->next = *head;	1382	elem->next = *head;
1213	*head = elem;	1383	*head = elem;
1214	}	1384	}
1215		1385
1216	inline void	1386	void inline_size
1217	wlist_del (WL *head, WL elem)	1387	wlist_del (WL *head, WL elem)
1218	{	1388	{
1219	while (*head)	1389	while (*head)
1220	{	1390	{
1221	if (*head == elem)	1391	if (*head == elem)
…		…
1226		1396
1227	head = &(*head)->next;	1397	head = &(*head)->next;
1228	}	1398	}
1229	}	1399	}
1230		1400
1231	inline void	1401	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1402	ev_clear_pending (EV_P_ W w)
1233	{	1403	{
1234	if (w->pending)	1404	if (w->pending)
1235	{	1405	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1407	w->pending = 0;
1238	}	1408	}
1239	}	1409	}
1240		1410
1241	inline void	1411	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1412	ev_start (EV_P_ W w, int active)
1243	{	1413	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246		1416
1247	w->active = active;	1417	w->active = active;
1248	ev_ref (EV_A);	1418	ev_ref (EV_A);
1249	}	1419	}
1250		1420
1251	inline void	1421	void inline_size
1252	ev_stop (EV_P_ W w)	1422	ev_stop (EV_P_ W w)
1253	{	1423	{
1254	ev_unref (EV_A);	1424	ev_unref (EV_A);
1255	w->active = 0;	1425	w->active = 0;
1256	}	1426	}
1257		1427
1258	/*****************************************************************************/	1428	/*****************************************************************************/
1259		1429
1260	void	1430	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1431	ev_io_start (EV_P_ ev_io *w)
1262	{	1432	{
1263	int fd = w->fd;	1433	int fd = w->fd;
1264		1434
1265	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1266	return;	1436	return;
1267		1437
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1438	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1439
1270	ev_start (EV_A_ (W)w, 1);	1440	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1441	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1442	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1443
1274	fd_change (EV_A_ fd);	1444	fd_change (EV_A_ fd);
1275	}	1445	}
1276		1446
1277	void	1447	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1448	ev_io_stop (EV_P_ ev_io *w)
1279	{	1449	{
1280	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1282	return;	1452	return;
		1453
		1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1455
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1456	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1457	ev_stop (EV_A_ (W)w);
1286		1458
1287	fd_change (EV_A_ w->fd);	1459	fd_change (EV_A_ w->fd);
1288	}	1460	}
1289		1461
1290	void	1462	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1463	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1464	{
1293	if (ev_is_active (w))	1465	if (expect_false (ev_is_active (w)))
1294	return;	1466	return;
1295		1467
1296	((WT)w)->at += mn_now;	1468	((WT)w)->at += mn_now;
1297		1469
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1470	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1471
1300	ev_start (EV_A_ (W)w, ++timercnt);	1472	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1474	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1475	upheap ((WT *)timers, timercnt - 1);
1304		1476
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}	1478	}
1307		1479
1308	void	1480	void
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1481	ev_timer_stop (EV_P_ ev_timer *w)
1310	{	1482	{
1311	ev_clear_pending (EV_A_ (W)w);	1483	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1484	if (expect_false (!ev_is_active (w)))
1313	return;	1485	return;
1314		1486
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1316		1488
1317	if (((W)w)->active < timercnt--)	1489	if (expect_true (((W)w)->active < timercnt--))
1318	{	1490	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1491	timers [((W)w)->active - 1] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1321	}	1493	}
1322		1494
1323	((WT)w)->at = w->repeat;	1495	((WT)w)->at -= mn_now;
1324		1496
1325	ev_stop (EV_A_ (W)w);	1497	ev_stop (EV_A_ (W)w);
1326	}	1498	}
1327		1499
1328	void	1500	void
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1501	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1502	{
1331	if (ev_is_active (w))	1503	if (ev_is_active (w))
1332	{	1504	{
1333	if (w->repeat)	1505	if (w->repeat)
1334	{	1506	{
1335	((WT)w)->at = mn_now + w->repeat;	1507	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1509	}
1338	else	1510	else
1339	ev_timer_stop (EV_A_ w);	1511	ev_timer_stop (EV_A_ w);
1340	}	1512	}
1341	else if (w->repeat)	1513	else if (w->repeat)
		1514	{
		1515	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1516	ev_timer_start (EV_A_ w);
		1517	}
1343	}	1518	}
1344		1519
		1520	#if EV_PERIODIC_ENABLE
1345	void	1521	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1522	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1523	{
1348	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1349	return;	1525	return;
1350		1526
		1527	if (w->reschedule_cb)
		1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1529	else if (w->interval)
		1530	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1531	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1532	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1533	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1534	}
1356		1535
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1536	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1538	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1539	upheap ((WT *)periodics, periodiccnt - 1);
1361		1540
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}	1542	}
1364		1543
1365	void	1544	void
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1545	ev_periodic_stop (EV_P_ ev_periodic *w)
1367	{	1546	{
1368	ev_clear_pending (EV_A_ (W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))	1548	if (expect_false (!ev_is_active (w)))
1370	return;	1549	return;
1371		1550
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1373		1552
1374	if (((W)w)->active < periodiccnt--)	1553	if (expect_true (((W)w)->active < periodiccnt--))
1375	{	1554	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1378	}	1557	}
1379		1558
1380	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1381	}	1560	}
1382		1561
1383	void	1562	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1563	ev_periodic_again (EV_P_ ev_periodic *w)
1385	{	1564	{
1386	if (ev_is_active (w))	1565	/* TODO: use adjustheap and recalculation */
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));
1391	idles [idlecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	idles [((W)w)->active - 1] = idles [--idlecnt];
1402	ev_stop (EV_A_ (W)w);	1566	ev_periodic_stop (EV_A_ w);
		1567	ev_periodic_start (EV_A_ w);
1403	}	1568	}
1404		1569	#endif
1405	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));
1413	prepares [preparecnt - 1] = w;
1414	}
1415
1416	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426
1427	void
1428	ev_check_start (EV_P_ struct ev_check *w)
1429	{
1430	if (ev_is_active (w))
1431	return;
1432
1433	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));
1435	checks [checkcnt - 1] = w;
1436	}
1437
1438	void
1439	ev_check_stop (EV_P_ struct ev_check *w)
1440	{
1441	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))
1443	return;
1444
1445	checks [((W)w)->active - 1] = checks [--checkcnt];
1446	ev_stop (EV_A_ (W)w);
1447	}
1448		1570
1449	#ifndef SA_RESTART	1571	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1572	# define SA_RESTART 0
1451	#endif	1573	#endif
1452		1574
1453	void	1575	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1576	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1577	{
1456	#if EV_MULTIPLICITY	1578	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1579	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1580	#endif
1459	if (ev_is_active (w))	1581	if (expect_false (ev_is_active (w)))
1460	return;	1582	return;
1461		1583
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1584	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1585
1464	ev_start (EV_A_ (W)w, 1);	1586	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1587	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1588	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1589
1468	if (!((WL)w)->next)	1590	if (!((WL)w)->next)
1469	{	1591	{
1470	#if WIN32	1592	#if _WIN32
1471	signal (w->signum, sighandler);	1593	signal (w->signum, sighandler);
1472	#else	1594	#else
1473	struct sigaction sa;	1595	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1596	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1597	sigfillset (&sa.sa_mask);
…		…
1478	#endif	1600	#endif
1479	}	1601	}
1480	}	1602	}
1481		1603
1482	void	1604	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1605	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1606	{
1485	ev_clear_pending (EV_A_ (W)w);	1607	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1487	return;	1609	return;
1488		1610
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1612	ev_stop (EV_A_ (W)w);
1491		1613
1492	if (!signals [w->signum - 1].head)	1614	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1615	signal (w->signum, SIG_DFL);
1494	}	1616	}
1495		1617
1496	void	1618	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1619	ev_child_start (EV_P_ ev_child *w)
1498	{	1620	{
1499	#if EV_MULTIPLICITY	1621	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1622	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1623	#endif
1502	if (ev_is_active (w))	1624	if (expect_false (ev_is_active (w)))
1503	return;	1625	return;
1504		1626
1505	ev_start (EV_A_ (W)w, 1);	1627	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1507	}	1629	}
1508		1630
1509	void	1631	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1632	ev_child_stop (EV_P_ ev_child *w)
1511	{	1633	{
1512	ev_clear_pending (EV_A_ (W)w);	1634	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1514	return;	1636	return;
1515		1637
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1639	ev_stop (EV_A_ (W)w);
1518	}	1640	}
1519		1641
		1642	#if EV_STAT_ENABLE
		1643
		1644	# ifdef _WIN32
		1645	# undef lstat
		1646	# define lstat(a,b) _stati64 (a,b)
		1647	# endif
		1648
		1649	#define DEF_STAT_INTERVAL 5.0074891
		1650	#define MIN_STAT_INTERVAL 0.1074891
		1651
		1652	void
		1653	ev_stat_stat (EV_P_ ev_stat *w)
		1654	{
		1655	if (lstat (w->path, &w->attr) < 0)
		1656	w->attr.st_nlink = 0;
		1657	else if (!w->attr.st_nlink)
		1658	w->attr.st_nlink = 1;
		1659	}
		1660
		1661	static void
		1662	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1663	{
		1664	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1665
		1666	/* we copy this here each the time so that */
		1667	/* prev has the old value when the callback gets invoked */
		1668	w->prev = w->attr;
		1669	ev_stat_stat (EV_A_ w);
		1670
		1671	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1672	ev_feed_event (EV_A_ w, EV_STAT);
		1673	}
		1674
		1675	void
		1676	ev_stat_start (EV_P_ ev_stat *w)
		1677	{
		1678	if (expect_false (ev_is_active (w)))
		1679	return;
		1680
		1681	/* since we use memcmp, we need to clear any padding data etc. */
		1682	memset (&w->prev, 0, sizeof (ev_statdata));
		1683	memset (&w->attr, 0, sizeof (ev_statdata));
		1684
		1685	ev_stat_stat (EV_A_ w);
		1686
		1687	if (w->interval < MIN_STAT_INTERVAL)
		1688	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1689
		1690	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1691	ev_set_priority (&w->timer, ev_priority (w));
		1692	ev_timer_start (EV_A_ &w->timer);
		1693
		1694	ev_start (EV_A_ (W)w, 1);
		1695	}
		1696
		1697	void
		1698	ev_stat_stop (EV_P_ ev_stat *w)
		1699	{
		1700	ev_clear_pending (EV_A_ (W)w);
		1701	if (expect_false (!ev_is_active (w)))
		1702	return;
		1703
		1704	ev_timer_stop (EV_A_ &w->timer);
		1705
		1706	ev_stop (EV_A_ (W)w);
		1707	}
		1708	#endif
		1709
		1710	void
		1711	ev_idle_start (EV_P_ ev_idle *w)
		1712	{
		1713	if (expect_false (ev_is_active (w)))
		1714	return;
		1715
		1716	ev_start (EV_A_ (W)w, ++idlecnt);
		1717	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1718	idles [idlecnt - 1] = w;
		1719	}
		1720
		1721	void
		1722	ev_idle_stop (EV_P_ ev_idle *w)
		1723	{
		1724	ev_clear_pending (EV_A_ (W)w);
		1725	if (expect_false (!ev_is_active (w)))
		1726	return;
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730	idles [active - 1] = idles [--idlecnt];
		1731	((W)idles [active - 1])->active = active;
		1732	}
		1733
		1734	ev_stop (EV_A_ (W)w);
		1735	}
		1736
		1737	void
		1738	ev_prepare_start (EV_P_ ev_prepare *w)
		1739	{
		1740	if (expect_false (ev_is_active (w)))
		1741	return;
		1742
		1743	ev_start (EV_A_ (W)w, ++preparecnt);
		1744	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1745	prepares [preparecnt - 1] = w;
		1746	}
		1747
		1748	void
		1749	ev_prepare_stop (EV_P_ ev_prepare *w)
		1750	{
		1751	ev_clear_pending (EV_A_ (W)w);
		1752	if (expect_false (!ev_is_active (w)))
		1753	return;
		1754
		1755	{
		1756	int active = ((W)w)->active;
		1757	prepares [active - 1] = prepares [--preparecnt];
		1758	((W)prepares [active - 1])->active = active;
		1759	}
		1760
		1761	ev_stop (EV_A_ (W)w);
		1762	}
		1763
		1764	void
		1765	ev_check_start (EV_P_ ev_check *w)
		1766	{
		1767	if (expect_false (ev_is_active (w)))
		1768	return;
		1769
		1770	ev_start (EV_A_ (W)w, ++checkcnt);
		1771	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1772	checks [checkcnt - 1] = w;
		1773	}
		1774
		1775	void
		1776	ev_check_stop (EV_P_ ev_check *w)
		1777	{
		1778	ev_clear_pending (EV_A_ (W)w);
		1779	if (expect_false (!ev_is_active (w)))
		1780	return;
		1781
		1782	{
		1783	int active = ((W)w)->active;
		1784	checks [active - 1] = checks [--checkcnt];
		1785	((W)checks [active - 1])->active = active;
		1786	}
		1787
		1788	ev_stop (EV_A_ (W)w);
		1789	}
		1790
		1791	#if EV_EMBED_ENABLE
		1792	void noinline
		1793	ev_embed_sweep (EV_P_ ev_embed *w)
		1794	{
		1795	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1796	}
		1797
		1798	static void
		1799	embed_cb (EV_P_ ev_io *io, int revents)
		1800	{
		1801	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1802
		1803	if (ev_cb (w))
		1804	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1805	else
		1806	ev_embed_sweep (loop, w);
		1807	}
		1808
		1809	void
		1810	ev_embed_start (EV_P_ ev_embed *w)
		1811	{
		1812	if (expect_false (ev_is_active (w)))
		1813	return;
		1814
		1815	{
		1816	struct ev_loop *loop = w->loop;
		1817	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1818	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1819	}
		1820
		1821	ev_set_priority (&w->io, ev_priority (w));
		1822	ev_io_start (EV_A_ &w->io);
		1823
		1824	ev_start (EV_A_ (W)w, 1);
		1825	}
		1826
		1827	void
		1828	ev_embed_stop (EV_P_ ev_embed *w)
		1829	{
		1830	ev_clear_pending (EV_A_ (W)w);
		1831	if (expect_false (!ev_is_active (w)))
		1832	return;
		1833
		1834	ev_io_stop (EV_A_ &w->io);
		1835
		1836	ev_stop (EV_A_ (W)w);
		1837	}
		1838	#endif
		1839
		1840	#if EV_FORK_ENABLE
		1841	void
		1842	ev_fork_start (EV_P_ ev_fork *w)
		1843	{
		1844	if (expect_false (ev_is_active (w)))
		1845	return;
		1846
		1847	ev_start (EV_A_ (W)w, ++forkcnt);
		1848	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1849	forks [forkcnt - 1] = w;
		1850	}
		1851
		1852	void
		1853	ev_fork_stop (EV_P_ ev_fork *w)
		1854	{
		1855	ev_clear_pending (EV_A_ (W)w);
		1856	if (expect_false (!ev_is_active (w)))
		1857	return;
		1858
		1859	{
		1860	int active = ((W)w)->active;
		1861	forks [active - 1] = forks [--forkcnt];
		1862	((W)forks [active - 1])->active = active;
		1863	}
		1864
		1865	ev_stop (EV_A_ (W)w);
		1866	}
		1867	#endif
		1868
1520	/*****************************************************************************/	1869	/*****************************************************************************/
1521		1870
1522	struct ev_once	1871	struct ev_once
1523	{	1872	{
1524	struct ev_io io;	1873	ev_io io;
1525	struct ev_timer to;	1874	ev_timer to;
1526	void (*cb)(int revents, void *arg);	1875	void (*cb)(int revents, void *arg);
1527	void *arg;	1876	void *arg;
1528	};	1877	};
1529		1878
1530	static void	1879	static void
…		…
1539		1888
1540	cb (revents, arg);	1889	cb (revents, arg);
1541	}	1890	}
1542		1891
1543	static void	1892	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	1893	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	1894	{
1546	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1895	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547	}	1896	}
1548		1897
1549	static void	1898	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1899	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	1900	{
1552	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1901	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553	}	1902	}
1554		1903
1555	void	1904	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1905	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557	{	1906	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1907	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559		1908
1560	if (!once)	1909	if (expect_false (!once))
		1910	{
1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1911	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562	else	1912	return;
1563	{	1913	}
		1914
1564	once->cb = cb;	1915	once->cb = cb;
1565	once->arg = arg;	1916	once->arg = arg;
1566		1917
1567	ev_watcher_init (&once->io, once_cb_io);	1918	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	1919	if (fd >= 0)
1569	{	1920	{
1570	ev_io_set (&once->io, fd, events);	1921	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	1922	ev_io_start (EV_A_ &once->io);
1572	}	1923	}
1573		1924
1574	ev_watcher_init (&once->to, once_cb_to);	1925	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	1926	if (timeout >= 0.)
1576	{	1927	{
1577	ev_timer_set (&once->to, timeout, 0.);	1928	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	1929	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	1930	}
1581	}	1931	}
1582		1932
		1933	#ifdef __cplusplus
		1934	}
		1935	#endif
		1936

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