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

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
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)
138	# define inline static	202	# define inline_speed static
		203	# define inline_minimal 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	#ifndef WCONTINUED
653	# define WCONTINUED 0	721	# define WCONTINUED 0
654	#endif	722	#endif
655		723
656	static void	724	void inline_speed
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658	{	726	{
659	struct ev_child *w;	727	ev_child *w;
660		728
661	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	729	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
662	if (w->pid == pid \|\| !w->pid)	730	if (w->pid == pid \|\| !w->pid)
663	{	731	{
664	ev_priority (w) = ev_priority (sw); /* need to do it now */	732	ev_priority (w) = ev_priority (sw); /* need to do it now */
665	w->rpid = pid;	733	w->rpid = pid;
666	w->rstatus = status;	734	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	736	}
669	}	737	}
670		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
676	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	744	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
677	{	745	{
678	/* make sure we are called again until all childs have been reaped */	746	/* make sure we are called again until all childs have been reaped */
		747	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		749
681	child_reap (EV_A_ sw, pid, pid, status);	750	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 */	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}	752	}
684	}	753	}
685		754
686	#endif	755	#endif
687		756
688	/*****************************************************************************/	757	/*****************************************************************************/
689		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
690	#if EV_USE_KQUEUE	762	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	763	# include "ev_kqueue.c"
692	#endif	764	#endif
693	#if EV_USE_EPOLL	765	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	766	# include "ev_epoll.c"
…		…
711	{	783	{
712	return EV_VERSION_MINOR;	784	return EV_VERSION_MINOR;
713	}	785	}
714		786
715	/* return true if we are running with elevated privileges and should ignore env variables */	787	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	788	int inline_size
717	enable_secure (void)	789	enable_secure (void)
718	{	790	{
719	#ifdef WIN32	791	#ifdef _WIN32
720	return 0;	792	return 0;
721	#else	793	#else
722	return getuid () != geteuid ()	794	return getuid () != geteuid ()
723	\|\| getgid () != getegid ();	795	\|\| getgid () != getegid ();
724	#endif	796	#endif
725	}	797	}
726		798
727	int	799	unsigned int
728	ev_method (EV_P)	800	ev_supported_backends (void)
729	{	801	{
730	return method;	802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	\| EVBACKEND_KQUEUE
		836	\| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
731	}	843	}
732		844
733	static void	845	static void
734	loop_init (EV_P_ int methods)	846	loop_init (EV_P_ unsigned int flags)
735	{	847	{
736	if (!method)	848	if (!backend)
737	{	849	{
738	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
739	{	851	{
740	struct timespec ts;	852	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	854	have_monotonic = 1;
743	}	855	}
744	#endif	856	#endif
745		857
746	rt_now = ev_time ();	858	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	859	mn_now = get_clock ();
748	now_floor = mn_now;	860	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	861	rtmn_diff = ev_rt_now - mn_now;
750		862
751	if (methods == EVMETHOD_AUTO)	863	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	866	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		867
757	method = 0;	868	if (!(flags & 0x0000ffffUL))
758	#if EV_USE_WIN32	869	flags \|= ev_recommended_backends ();
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	874	#endif
761	#if EV_USE_KQUEUE	875	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	877	#endif
764	#if EV_USE_EPOLL	878	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	880	#endif
767	#if EV_USE_POLL	881	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	883	#endif
770	#if EV_USE_SELECT	884	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	886	#endif
773		887
774	ev_watcher_init (&sigev, sigcb);	888	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	889	ev_set_priority (&sigev, EV_MAXPRI);
776	}	890	}
777	}	891	}
778		892
779	void	893	static void
780	loop_destroy (EV_P)	894	loop_destroy (EV_P)
781	{	895	{
782	int i;	896	int i;
783		897
784	#if EV_USE_WIN32	898	#if EV_USE_PORT
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	900	#endif
787	#if EV_USE_KQUEUE	901	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	903	#endif
790	#if EV_USE_EPOLL	904	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	906	#endif
793	#if EV_USE_POLL	907	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	909	#endif
796	#if EV_USE_SELECT	910	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	912	#endif
799		913
800	for (i = NUMPRI; i--; )	914	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	915	array_free (pending, [i]);
802		916
803	/* have to use the microsoft-never-gets-it-right macro */	917	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	918	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	919	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	920	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	921	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	922	#endif
809	array_free_microshit (check);	923	array_free (idle, EMPTY0);
		924	array_free (prepare, EMPTY0);
		925	array_free (check, EMPTY0);
810		926
811	method = 0;	927	backend = 0;
812	}	928	}
813		929
814	static void	930	static void
815	loop_fork (EV_P)	931	loop_fork (EV_P)
816	{	932	{
		933	#if EV_USE_PORT
		934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		935	#endif
		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
817	#if EV_USE_EPOLL	939	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	940	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	941	#endif
823		942
824	if (ev_is_active (&sigev))	943	if (ev_is_active (&sigev))
825	{	944	{
826	/* default loop */	945	/* default loop */
…		…
828	ev_ref (EV_A);	947	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	948	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	949	close (sigpipe [0]);
831	close (sigpipe [1]);	950	close (sigpipe [1]);
832		951
833	while (ev_pipe (sigpipe))	952	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	953	syserr ("(libev) error creating pipe");
835		954
836	siginit (EV_A);	955	siginit (EV_A);
837	}	956	}
838		957
839	postfork = 0;	958	postfork = 0;
840	}	959	}
841		960
842	#if EV_MULTIPLICITY	961	#if EV_MULTIPLICITY
843	struct ev_loop *	962	struct ev_loop *
844	ev_loop_new (int methods)	963	ev_loop_new (unsigned int flags)
845	{	964	{
846	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	965	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
847		966
848	memset (loop, 0, sizeof (struct ev_loop));	967	memset (loop, 0, sizeof (struct ev_loop));
849		968
850	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
851		970
852	if (ev_method (EV_A))	971	if (ev_backend (EV_A))
853	return loop;	972	return loop;
854		973
855	return 0;	974	return 0;
856	}	975	}
857		976
…		…
869	}	988	}
870		989
871	#endif	990	#endif
872		991
873	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
878	#else	995	#else
879	static int default_loop;
880
881	int	996	int
		997	ev_default_loop (unsigned int flags)
882	#endif	998	#endif
883	ev_default_loop (int methods)
884	{	999	{
885	if (sigpipe [0] == sigpipe [1])	1000	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	1001	if (pipe (sigpipe))
887	return 0;	1002	return 0;
888		1003
889	if (!default_loop)	1004	if (!ev_default_loop_ptr)
890	{	1005	{
891	#if EV_MULTIPLICITY	1006	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1008	#else
894	default_loop = 1;	1009	ev_default_loop_ptr = 1;
895	#endif	1010	#endif
896		1011
897	loop_init (EV_A_ methods);	1012	loop_init (EV_A_ flags);
898		1013
899	if (ev_method (EV_A))	1014	if (ev_backend (EV_A))
900	{	1015	{
901	siginit (EV_A);	1016	siginit (EV_A);
902		1017
903	#ifndef WIN32	1018	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1019	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1020	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1021	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1023	#endif
909	}	1024	}
910	else	1025	else
911	default_loop = 0;	1026	ev_default_loop_ptr = 0;
912	}	1027	}
913		1028
914	return default_loop;	1029	return ev_default_loop_ptr;
915	}	1030	}
916		1031
917	void	1032	void
918	ev_default_destroy (void)	1033	ev_default_destroy (void)
919	{	1034	{
920	#if EV_MULTIPLICITY	1035	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1036	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1037	#endif
923		1038
924	#ifndef WIN32	1039	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1040	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1041	ev_signal_stop (EV_A_ &childev);
927	#endif	1042	#endif
928		1043
929	ev_ref (EV_A); /* signal watcher */	1044	ev_ref (EV_A); /* signal watcher */
…		…
937		1052
938	void	1053	void
939	ev_default_fork (void)	1054	ev_default_fork (void)
940	{	1055	{
941	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1057	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1058	#endif
944		1059
945	if (method)	1060	if (backend)
946	postfork = 1;	1061	postfork = 1;
947	}	1062	}
948		1063
949	/*****************************************************************************/	1064	/*****************************************************************************/
950		1065
951	static void	1066	int inline_size
		1067	any_pending (EV_P)
		1068	{
		1069	int pri;
		1070
		1071	for (pri = NUMPRI; pri--; )
		1072	if (pendingcnt [pri])
		1073	return 1;
		1074
		1075	return 0;
		1076	}
		1077
		1078	void inline_speed
952	call_pending (EV_P)	1079	call_pending (EV_P)
953	{	1080	{
954	int pri;	1081	int pri;
955		1082
956	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1084	while (pendingcnt [pri])
958	{	1085	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1087
961	if (p->w)	1088	if (expect_true (p->w))
962	{	1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
963	p->w->pending = 0;	1092	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1093	EV_CB_INVOKE (p->w, p->events);
965	}	1094	}
966	}	1095	}
967	}	1096	}
968		1097
969	static void	1098	void inline_size
970	timers_reify (EV_P)	1099	timers_reify (EV_P)
971	{	1100	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1102	{
974	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
975		1104
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
977		1106
978	/* first reschedule or stop timer */	1107	/* first reschedule or stop timer */
979	if (w->repeat)	1108	if (w->repeat)
980	{	1109	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1110	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1111
982	((WT)w)->at = mn_now + w->repeat;	1112	((WT)w)->at += w->repeat;
		1113	if (((WT)w)->at < mn_now)
		1114	((WT)w)->at = mn_now;
		1115
983	downheap ((WT *)timers, timercnt, 0);	1116	downheap ((WT *)timers, timercnt, 0);
984	}	1117	}
985	else	1118	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1119	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1120
988	event (EV_A_ (W)w, EV_TIMEOUT);	1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1122	}
990	}	1123	}
991		1124
992	static void	1125	#if EV_PERIODIC_ENABLE
		1126	void inline_size
993	periodics_reify (EV_P)	1127	periodics_reify (EV_P)
994	{	1128	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1130	{
997	struct ev_periodic *w = periodics [0];	1131	ev_periodic *w = periodics [0];
998		1132
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1000		1134
1001	/* first reschedule or stop timer */	1135	/* first reschedule or stop timer */
1002	if (w->interval)	1136	if (w->reschedule_cb)
1003	{	1137	{
		1138	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1140	downheap ((WT *)periodics, periodiccnt, 0);
		1141	}
		1142	else if (w->interval)
		1143	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1144	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1145	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1146	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1147	}
1008	else	1148	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1149	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1150
1011	event (EV_A_ (W)w, EV_PERIODIC);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1152	}
1013	}	1153	}
1014		1154
1015	static void	1155	static void noinline
1016	periodics_reschedule (EV_P)	1156	periodics_reschedule (EV_P)
1017	{	1157	{
1018	int i;	1158	int i;
1019		1159
1020	/* adjust periodics after time jump */	1160	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1161	for (i = 0; i < periodiccnt; ++i)
1022	{	1162	{
1023	struct ev_periodic *w = periodics [i];	1163	ev_periodic *w = periodics [i];
1024		1164
		1165	if (w->reschedule_cb)
		1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1167	else if (w->interval)
1026	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
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	}	1169	}
1038	}
1039		1170
1040	inline int	1171	/* now rebuild the heap */
		1172	for (i = periodiccnt >> 1; i--; )
		1173	downheap ((WT *)periodics, periodiccnt, i);
		1174	}
		1175	#endif
		1176
		1177	int inline_size
1041	time_update_monotonic (EV_P)	1178	time_update_monotonic (EV_P)
1042	{	1179	{
1043	mn_now = get_clock ();	1180	mn_now = get_clock ();
1044		1181
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1183	{
1047	rt_now = rtmn_diff + mn_now;	1184	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1185	return 0;
1049	}	1186	}
1050	else	1187	else
1051	{	1188	{
1052	now_floor = mn_now;	1189	now_floor = mn_now;
1053	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
1054	return 1;	1191	return 1;
1055	}	1192	}
1056	}	1193	}
1057		1194
1058	static void	1195	void inline_size
1059	time_update (EV_P)	1196	time_update (EV_P)
1060	{	1197	{
1061	int i;	1198	int i;
1062		1199
1063	#if EV_USE_MONOTONIC	1200	#if EV_USE_MONOTONIC
…		…
1065	{	1202	{
1066	if (time_update_monotonic (EV_A))	1203	if (time_update_monotonic (EV_A))
1067	{	1204	{
1068	ev_tstamp odiff = rtmn_diff;	1205	ev_tstamp odiff = rtmn_diff;
1069		1206
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
1071	{	1216	{
1072	rtmn_diff = rt_now - mn_now;	1217	rtmn_diff = ev_rt_now - mn_now;
1073		1218
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1220	return; /* all is well */
1076		1221
1077	rt_now = ev_time ();	1222	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1223	mn_now = get_clock ();
1079	now_floor = mn_now;	1224	now_floor = mn_now;
1080	}	1225	}
1081		1226
		1227	# if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1228	periodics_reschedule (EV_A);
		1229	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1230	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1232	}
1086	}	1233	}
1087	else	1234	else
1088	#endif	1235	#endif
1089	{	1236	{
1090	rt_now = ev_time ();	1237	ev_rt_now = ev_time ();
1091		1238
1092	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1239	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{	1240	{
		1241	#if EV_PERIODIC_ENABLE
1094	periodics_reschedule (EV_A);	1242	periodics_reschedule (EV_A);
		1243	#endif
1095		1244
1096	/* adjust timers. this is easy, as the offset is the same for all */	1245	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)	1246	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1247	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1248	}
1100		1249
1101	mn_now = rt_now;	1250	mn_now = ev_rt_now;
1102	}	1251	}
1103	}	1252	}
1104		1253
1105	void	1254	void
1106	ev_ref (EV_P)	1255	ev_ref (EV_P)
…		…
1117	static int loop_done;	1266	static int loop_done;
1118		1267
1119	void	1268	void
1120	ev_loop (EV_P_ int flags)	1269	ev_loop (EV_P_ int flags)
1121	{	1270	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1271	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
1124		1274
1125	do	1275	while (activecnt)
1126	{	1276	{
1127	/* queue check watchers (and execute them) */	1277	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1278	if (expect_false (preparecnt))
1129	{	1279	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1137		1287
1138	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1289	fd_reify (EV_A);
1140		1290
1141	/* calculate blocking time */	1291	/* calculate blocking time */
		1292	{
		1293	double block;
1142		1294
1143	/* we only need this for !monotonic clockor timers, but as we basically	1295	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1144	always have timers, we just calculate it always */	1296	block = 0.; /* do not block at all */
		1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
1145	#if EV_USE_MONOTONIC	1300	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1301	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1302	time_update_monotonic (EV_A);
1148	else	1303	else
1149	#endif	1304	#endif
1150	{	1305	{
1151	rt_now = ev_time ();	1306	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1307	mn_now = ev_rt_now;
1153	}	1308	}
1154		1309
1155	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
1160		1311
1161	if (timercnt)	1312	if (timercnt)
1162	{	1313	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1315	if (block > to) block = to;
1165	}	1316	}
1166		1317
		1318	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1319	if (periodiccnt)
1168	{	1320	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1322	if (block > to) block = to;
1171	}	1323	}
		1324	#endif
1172		1325
1173	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
1174	}	1327	}
1175		1328
1176	method_poll (EV_A_ block);	1329	backend_poll (EV_A_ block);
		1330	}
1177		1331
1178	/* update rt_now, do magic */	1332	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1333	time_update (EV_A);
1180		1334
1181	/* queue pending timers and reschedule them */	1335	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1336	timers_reify (EV_A); /* relative timers called last */
		1337	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1338	periodics_reify (EV_A); /* absolute timers called first */
		1339	#endif
1184		1340
1185	/* queue idle watchers unless io or timers are pending */	1341	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1342	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1344
1189	/* queue check watchers, to be executed first */	1345	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1346	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1348
1193	call_pending (EV_A);	1349	call_pending (EV_A);
1194	}
1195	while (activecnt && !loop_done);
1196		1350
1197	if (loop_done != 2)	1351	if (expect_false (loop_done))
1198	loop_done = 0;	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
1199	}	1357	}
1200		1358
1201	void	1359	void
1202	ev_unloop (EV_P_ int how)	1360	ev_unloop (EV_P_ int how)
1203	{	1361	{
1204	loop_done = how;	1362	loop_done = how;
1205	}	1363	}
1206		1364
1207	/*****************************************************************************/	1365	/*****************************************************************************/
1208		1366
1209	inline void	1367	void inline_size
1210	wlist_add (WL *head, WL elem)	1368	wlist_add (WL *head, WL elem)
1211	{	1369	{
1212	elem->next = *head;	1370	elem->next = *head;
1213	*head = elem;	1371	*head = elem;
1214	}	1372	}
1215		1373
1216	inline void	1374	void inline_size
1217	wlist_del (WL *head, WL elem)	1375	wlist_del (WL *head, WL elem)
1218	{	1376	{
1219	while (*head)	1377	while (*head)
1220	{	1378	{
1221	if (*head == elem)	1379	if (*head == elem)
…		…
1226		1384
1227	head = &(*head)->next;	1385	head = &(*head)->next;
1228	}	1386	}
1229	}	1387	}
1230		1388
1231	inline void	1389	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1390	ev_clear_pending (EV_P_ W w)
1233	{	1391	{
1234	if (w->pending)	1392	if (w->pending)
1235	{	1393	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1395	w->pending = 0;
1238	}	1396	}
1239	}	1397	}
1240		1398
1241	inline void	1399	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1400	ev_start (EV_P_ W w, int active)
1243	{	1401	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246		1404
1247	w->active = active;	1405	w->active = active;
1248	ev_ref (EV_A);	1406	ev_ref (EV_A);
1249	}	1407	}
1250		1408
1251	inline void	1409	void inline_size
1252	ev_stop (EV_P_ W w)	1410	ev_stop (EV_P_ W w)
1253	{	1411	{
1254	ev_unref (EV_A);	1412	ev_unref (EV_A);
1255	w->active = 0;	1413	w->active = 0;
1256	}	1414	}
1257		1415
1258	/*****************************************************************************/	1416	/*****************************************************************************/
1259		1417
1260	void	1418	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1419	ev_io_start (EV_P_ ev_io *w)
1262	{	1420	{
1263	int fd = w->fd;	1421	int fd = w->fd;
1264		1422
1265	if (ev_is_active (w))	1423	if (expect_false (ev_is_active (w)))
1266	return;	1424	return;
1267		1425
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1426	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1427
1270	ev_start (EV_A_ (W)w, 1);	1428	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1429	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1430	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1431
1274	fd_change (EV_A_ fd);	1432	fd_change (EV_A_ fd);
1275	}	1433	}
1276		1434
1277	void	1435	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1436	ev_io_stop (EV_P_ ev_io *w)
1279	{	1437	{
1280	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1439	if (expect_false (!ev_is_active (w)))
1282	return;	1440	return;
		1441
		1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1443
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1445	ev_stop (EV_A_ (W)w);
1286		1446
1287	fd_change (EV_A_ w->fd);	1447	fd_change (EV_A_ w->fd);
1288	}	1448	}
1289		1449
1290	void	1450	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1451	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1452	{
1293	if (ev_is_active (w))	1453	if (expect_false (ev_is_active (w)))
1294	return;	1454	return;
1295		1455
1296	((WT)w)->at += mn_now;	1456	((WT)w)->at += mn_now;
1297		1457
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1459
1300	ev_start (EV_A_ (W)w, ++timercnt);	1460	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1462	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1463	upheap ((WT *)timers, timercnt - 1);
1304		1464
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}	1466	}
1307		1467
1308	void	1468	void
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1469	ev_timer_stop (EV_P_ ev_timer *w)
1310	{	1470	{
1311	ev_clear_pending (EV_A_ (W)w);	1471	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1472	if (expect_false (!ev_is_active (w)))
1313	return;	1473	return;
1314		1474
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1316		1476
1317	if (((W)w)->active < timercnt--)	1477	if (expect_true (((W)w)->active < timercnt--))
1318	{	1478	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1479	timers [((W)w)->active - 1] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1321	}	1481	}
1322		1482
1323	((WT)w)->at = w->repeat;	1483	((WT)w)->at -= mn_now;
1324		1484
1325	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1326	}	1486	}
1327		1487
1328	void	1488	void
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1489	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1490	{
1331	if (ev_is_active (w))	1491	if (ev_is_active (w))
1332	{	1492	{
1333	if (w->repeat)	1493	if (w->repeat)
1334	{	1494	{
1335	((WT)w)->at = mn_now + w->repeat;	1495	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1497	}
1338	else	1498	else
1339	ev_timer_stop (EV_A_ w);	1499	ev_timer_stop (EV_A_ w);
1340	}	1500	}
1341	else if (w->repeat)	1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1504	ev_timer_start (EV_A_ w);
		1505	}
1343	}	1506	}
1344		1507
		1508	#if EV_PERIODIC_ENABLE
1345	void	1509	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1510	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1511	{
1348	if (ev_is_active (w))	1512	if (expect_false (ev_is_active (w)))
1349	return;	1513	return;
1350		1514
		1515	if (w->reschedule_cb)
		1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1517	else if (w->interval)
		1518	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1519	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1520	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1522	}
1356		1523
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1524	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1526	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1527	upheap ((WT *)periodics, periodiccnt - 1);
1361		1528
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}	1530	}
1364		1531
1365	void	1532	void
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1533	ev_periodic_stop (EV_P_ ev_periodic *w)
1367	{	1534	{
1368	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1370	return;	1537	return;
1371		1538
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1373		1540
1374	if (((W)w)->active < periodiccnt--)	1541	if (expect_true (((W)w)->active < periodiccnt--))
1375	{	1542	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1378	}	1545	}
1379		1546
1380	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1381	}	1548	}
1382		1549
1383	void	1550	void
		1551	ev_periodic_again (EV_P_ ev_periodic *w)
		1552	{
		1553	/* TODO: use adjustheap and recalculation */
		1554	ev_periodic_stop (EV_A_ w);
		1555	ev_periodic_start (EV_A_ w);
		1556	}
		1557	#endif
		1558
		1559	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1560	ev_idle_start (EV_P_ ev_idle *w)
1385	{	1561	{
1386	if (ev_is_active (w))	1562	if (expect_false (ev_is_active (w)))
1387	return;	1563	return;
1388		1564
1389	ev_start (EV_A_ (W)w, ++idlecnt);	1565	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));	1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1391	idles [idlecnt - 1] = w;	1567	idles [idlecnt - 1] = w;
1392	}	1568	}
1393		1569
1394	void	1570	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)	1571	ev_idle_stop (EV_P_ ev_idle *w)
1396	{	1572	{
1397	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))	1574	if (expect_false (!ev_is_active (w)))
1399	return;	1575	return;
1400		1576
		1577	{
		1578	int active = ((W)w)->active;
1401	idles [((W)w)->active - 1] = idles [--idlecnt];	1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
1402	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1403	}	1584	}
1404		1585
1405	void	1586	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)	1587	ev_prepare_start (EV_P_ ev_prepare *w)
1407	{	1588	{
1408	if (ev_is_active (w))	1589	if (expect_false (ev_is_active (w)))
1409	return;	1590	return;
1410		1591
1411	ev_start (EV_A_ (W)w, ++preparecnt);	1592	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));	1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1413	prepares [preparecnt - 1] = w;	1594	prepares [preparecnt - 1] = w;
1414	}	1595	}
1415		1596
1416	void	1597	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1418	{	1599	{
1419	ev_clear_pending (EV_A_ (W)w);	1600	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))	1601	if (expect_false (!ev_is_active (w)))
1421	return;	1602	return;
1422		1603
		1604	{
		1605	int active = ((W)w)->active;
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
1424	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1425	}	1611	}
1426		1612
1427	void	1613	void
1428	ev_check_start (EV_P_ struct ev_check *w)	1614	ev_check_start (EV_P_ ev_check *w)
1429	{	1615	{
1430	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1431	return;	1617	return;
1432		1618
1433	ev_start (EV_A_ (W)w, ++checkcnt);	1619	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));	1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1435	checks [checkcnt - 1] = w;	1621	checks [checkcnt - 1] = w;
1436	}	1622	}
1437		1623
1438	void	1624	void
1439	ev_check_stop (EV_P_ struct ev_check *w)	1625	ev_check_stop (EV_P_ ev_check *w)
1440	{	1626	{
1441	ev_clear_pending (EV_A_ (W)w);	1627	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))	1628	if (expect_false (!ev_is_active (w)))
1443	return;	1629	return;
1444		1630
		1631	{
		1632	int active = ((W)w)->active;
1445	checks [((W)w)->active - 1] = checks [--checkcnt];	1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
1446	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1447	}	1638	}
1448		1639
1449	#ifndef SA_RESTART	1640	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1641	# define SA_RESTART 0
1451	#endif	1642	#endif
1452		1643
1453	void	1644	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1645	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1646	{
1456	#if EV_MULTIPLICITY	1647	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1649	#endif
1459	if (ev_is_active (w))	1650	if (expect_false (ev_is_active (w)))
1460	return;	1651	return;
1461		1652
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1654
1464	ev_start (EV_A_ (W)w, 1);	1655	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1658
1468	if (!((WL)w)->next)	1659	if (!((WL)w)->next)
1469	{	1660	{
1470	#if WIN32	1661	#if _WIN32
1471	signal (w->signum, sighandler);	1662	signal (w->signum, sighandler);
1472	#else	1663	#else
1473	struct sigaction sa;	1664	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1665	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1666	sigfillset (&sa.sa_mask);
…		…
1478	#endif	1669	#endif
1479	}	1670	}
1480	}	1671	}
1481		1672
1482	void	1673	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1674	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1675	{
1485	ev_clear_pending (EV_A_ (W)w);	1676	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1677	if (expect_false (!ev_is_active (w)))
1487	return;	1678	return;
1488		1679
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1681	ev_stop (EV_A_ (W)w);
1491		1682
1492	if (!signals [w->signum - 1].head)	1683	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1684	signal (w->signum, SIG_DFL);
1494	}	1685	}
1495		1686
1496	void	1687	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1688	ev_child_start (EV_P_ ev_child *w)
1498	{	1689	{
1499	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1692	#endif
1502	if (ev_is_active (w))	1693	if (expect_false (ev_is_active (w)))
1503	return;	1694	return;
1504		1695
1505	ev_start (EV_A_ (W)w, 1);	1696	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1507	}	1698	}
1508		1699
1509	void	1700	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1701	ev_child_stop (EV_P_ ev_child *w)
1511	{	1702	{
1512	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1514	return;	1705	return;
1515		1706
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1518	}	1709	}
1519		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
		1718	static void
		1719	embed_cb (EV_P_ ev_io *io, int revents)
		1720	{
		1721	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
		1773	}
		1774
		1775	static void
		1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1777	{
		1778	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1779
		1780	/* we copy this here each the time so that */
		1781	/* prev has the old value when the callback gets invoked */
		1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
		1789	void
		1790	ev_stat_start (EV_P_ ev_stat *w)
		1791	{
		1792	if (expect_false (ev_is_active (w)))
		1793	return;
		1794
		1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
		1798
		1799	ev_stat_stat (EV_A_ w);
		1800
		1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1802	ev_set_priority (&w->timer, ev_priority (w));
		1803	ev_timer_start (EV_A_ &w->timer);
		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
		1808	void
		1809	ev_stat_stop (EV_P_ ev_stat *w)
		1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
		1812	if (expect_false (!ev_is_active (w)))
		1813	return;
		1814
		1815	ev_timer_stop (EV_A_ &w->timer);
		1816
		1817	ev_stop (EV_A_ (W)w);
		1818	}
		1819	#endif
		1820
1520	/*****************************************************************************/	1821	/*****************************************************************************/
1521		1822
1522	struct ev_once	1823	struct ev_once
1523	{	1824	{
1524	struct ev_io io;	1825	ev_io io;
1525	struct ev_timer to;	1826	ev_timer to;
1526	void (cb)(int revents, void arg);	1827	void (cb)(int revents, void arg);
1527	void *arg;	1828	void *arg;
1528	};	1829	};
1529		1830
1530	static void	1831	static void
…		…
1539		1840
1540	cb (revents, arg);	1841	cb (revents, arg);
1541	}	1842	}
1542		1843
1543	static void	1844	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	1845	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	1846	{
1546	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1847	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1547	}	1848	}
1548		1849
1549	static void	1850	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	1852	{
1552	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1853	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1553	}	1854	}
1554		1855
1555	void	1856	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1557	{	1858	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1859	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1559		1860
1560	if (!once)	1861	if (expect_false (!once))
		1862	{
1561	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1863	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1562	else	1864	return;
1563	{	1865	}
		1866
1564	once->cb = cb;	1867	once->cb = cb;
1565	once->arg = arg;	1868	once->arg = arg;
1566		1869
1567	ev_watcher_init (&once->io, once_cb_io);	1870	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	1871	if (fd >= 0)
1569	{	1872	{
1570	ev_io_set (&once->io, fd, events);	1873	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	1874	ev_io_start (EV_A_ &once->io);
1572	}	1875	}
1573		1876
1574	ev_watcher_init (&once->to, once_cb_to);	1877	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	1878	if (timeout >= 0.)
1576	{	1879	{
1577	ev_timer_set (&once->to, timeout, 0.);	1880	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	1881	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	1882	}
1581	}	1883	}
1582		1884
		1885	#ifdef __cplusplus
		1886	}
		1887	#endif
		1888

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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 1.141 by root, Mon Nov 26 20:33:58 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC