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

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.146 by root, Tue Nov 27 09:17:51 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
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
48	# 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
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#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) */
94	#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) */
95	#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 */
96	/#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 */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# 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
102	# 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
103	#else	200	#else
104	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
105	# define inline static	203	# define inline_size static
		204	# define noinline
106	#endif	205	#endif
107		206
108	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
110		209
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
114	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
117		219
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		221
122	static int have_monotonic; /* runtime */	222	#ifdef _WIN32
123		223	# include "ev_win32.c"
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128	static int activecnt; /* number of active events */
129
130	#if EV_USE_SELECT
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;
132	static int vec_max;
133	#endif
134
135	#if EV_USEV_POLL
136	static struct pollfd *polls;
137	static int pollmax, pollcnt;
138	static int pollidxs; / maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141
142	#if EV_USE_EPOLL
143	static int epoll_fd = -1;
144
145	static struct epoll_event *events;
146	static int eventmax;
147	#endif
148
149	#if EV_USE_KQUEUE
150	static int kqueue_fd;
151	static struct kevent *kqueue_changes;
152	static int kqueue_changemax, kqueue_changecnt;
153	static struct kevent *kqueue_events;
154	static int kqueue_eventmax;
155	#endif	224	#endif
156		225
157	/*****************************************************************************/	226	/*****************************************************************************/
158		227
159	inline ev_tstamp	228	static void (syserr_cb)(const char msg);
		229
		230	void
		231	ev_set_syserr_cb (void (cb)(const char msg))
		232	{
		233	syserr_cb = cb;
		234	}
		235
		236	static void noinline
		237	syserr (const char *msg)
		238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
		242	if (syserr_cb)
		243	syserr_cb (msg);
		244	else
		245	{
		246	perror (msg);
		247	abort ();
		248	}
		249	}
		250
		251	static void (alloc)(void *ptr, long size);
		252
		253	void
		254	ev_set_allocator (void (cb)(void *ptr, long size))
		255	{
		256	alloc = cb;
		257	}
		258
		259	static void *
		260	ev_realloc (void *ptr, long size)
		261	{
		262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		263
		264	if (!ptr && size)
		265	{
		266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		267	abort ();
		268	}
		269
		270	return ptr;
		271	}
		272
		273	#define ev_malloc(size) ev_realloc (0, (size))
		274	#define ev_free(ptr) ev_realloc ((ptr), 0)
		275
		276	/*****************************************************************************/
		277
		278	typedef struct
		279	{
		280	WL head;
		281	unsigned char events;
		282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
		286	} ANFD;
		287
		288	typedef struct
		289	{
		290	W w;
		291	int events;
		292	} ANPENDING;
		293
		294	#if EV_MULTIPLICITY
		295
		296	struct ev_loop
		297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
		300	#define VAR(name,decl) decl;
		301	#include "ev_vars.h"
		302	#undef VAR
		303	};
		304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
		308
		309	#else
		310
		311	ev_tstamp ev_rt_now;
		312	#define VAR(name,decl) static decl;
		313	#include "ev_vars.h"
		314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
		317
		318	#endif
		319
		320	/*****************************************************************************/
		321
		322	ev_tstamp
160	ev_time (void)	323	ev_time (void)
161	{	324	{
162	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
163	struct timespec ts;	326	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
168	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
169	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
170	#endif	333	#endif
171	}	334	}
172		335
173	inline ev_tstamp	336	ev_tstamp inline_size
174	get_clock (void)	337	get_clock (void)
175	{	338	{
176	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
177	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
178	{	341	{
…		…
183	#endif	346	#endif
184		347
185	return ev_time ();	348	return ev_time ();
186	}	349	}
187		350
		351	#if EV_MULTIPLICITY
188	ev_tstamp	352	ev_tstamp
189	ev_now (EV_P)	353	ev_now (EV_P)
190	{	354	{
191	return rt_now;	355	return ev_rt_now;
192	}	356	}
		357	#endif
193		358
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
195		360
196	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
198	{ \	363	{ \
199	int newcnt = cur; \	364	int newcnt = cur; \
200	do \	365	do \
201	{ \	366	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	368	} \
204	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
205	\	370	\
206	base = realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	373	cur = newcnt; \
209	}	374	}
		375
		376	#define array_slim(type,stem) \
		377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		378	{ \
		379	stem ## max = array_roundsize (stem ## cnt >> 1); \
		380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		382	}
		383
		384	#define array_free(stem, idx) \
		385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		386
211	/*****************************************************************************/	387	/*****************************************************************************/
212		388
213	typedef struct	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
214	{	391	{
215	struct ev_watcher_list *head;	392	W w_ = (W)w;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219		393
220	static ANFD *anfds;	394	if (expect_false (w_->pending))
221	static int anfdmax;	395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		397	return;
		398	}
222		399
223	static void	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
224	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
225	{	419	{
226	while (count--)	420	while (count--)
227	{	421	{
228	base->head = 0;	422	base->head = 0;
…		…
231		425
232	++base;	426	++base;
233	}	427	}
234	}	428	}
235		429
236	typedef struct	430	void inline_speed
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)
247	{
248	if (w->pending)
249	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
251	return;
252	}
253
254	w->pending = ++pendingcnt [ABSPRI (w)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256	pendings [ABSPRI (w)][w->pending - 1].w = w;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;
258	}
259
260	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{
263	int i;
264
265	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);
267	}
268
269	static void
270	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
271	{	432	{
272	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	434	ev_io *w;
274		435
275	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)
276	{	437	{
277	int ev = w->events & events;	438	int ev = w->events & revents;
278		439
279	if (ev)	440	if (ev)
280	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
281	}	442	}
282	}	443	}
283		444
284	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
285		450
286	static int *fdchanges;	451	void inline_size
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	452	fd_reify (EV_P)
291	{	453	{
292	int i;	454	int i;
293		455
294	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
295	{	457	{
296	int fd = fdchanges [i];	458	int fd = fdchanges [i];
297	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
298	struct ev_io *w;	460	ev_io *w;
299		461
300	int events = 0;	462	int events = 0;
301		463
302	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)
303	events \|= w->events;	465	events \|= w->events;
304		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
305	anfd->reify = 0;	476	anfd->reify = 0;
306		477
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	479	anfd->events = events;
311	}
312	}	480	}
313		481
314	fdchangecnt = 0;	482	fdchangecnt = 0;
315	}	483	}
316		484
317	static void	485	void inline_size
318	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
319	{	487	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
321	return;	489	return;
322		490
323	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
324		492
325	++fdchangecnt;	493	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
328	}	496	}
329		497
330	static void	498	void inline_speed
331	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
332	{	500	{
333	struct ev_io *w;	501	ev_io *w;
334		502
335	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
336	{	504	{
337	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
338	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);
339	}	507	}
		508	}
		509
		510	int inline_size
		511	fd_valid (int fd)
		512	{
		513	#ifdef _WIN32
		514	return _get_osfhandle (fd) != -1;
		515	#else
		516	return fcntl (fd, F_GETFD) != -1;
		517	#endif
340	}	518	}
341		519
342	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
343	static void	521	static void noinline
344	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
345	{	523	{
346	int fd;	524	int fd;
347		525
348	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	527	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
352	}	530	}
353		531
354	/* 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 */
355	static void	533	static void noinline
356	fd_enomem (EV_P)	534	fd_enomem (EV_P)
357	{	535	{
358	int fd = anfdmax;	536	int fd;
359		537
360	while (fd--)	538	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	539	if (anfds [fd].events)
362	{	540	{
363	close (fd);
364	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
365	return;	542	return;
366	}	543	}
367	}	544	}
368		545
		546	/* usually called after fork if backend needs to re-arm all fds from scratch */
		547	static void noinline
		548	fd_rearm_all (EV_P)
		549	{
		550	int fd;
		551
		552	/* this should be highly optimised to not do anything but set a flag */
		553	for (fd = 0; fd < anfdmax; ++fd)
		554	if (anfds [fd].events)
		555	{
		556	anfds [fd].events = 0;
		557	fd_change (EV_A_ fd);
		558	}
		559	}
		560
369	/*****************************************************************************/	561	/*****************************************************************************/
370		562
371	static struct ev_timer **timers;	563	void inline_speed
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void
378	upheap (WT *timers, int k)	564	upheap (WT *heap, int k)
379	{	565	{
380	WT w = timers [k];	566	WT w = heap [k];
381		567
382	while (k && timers [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
383	{	569	{
384	timers [k] = timers [k >> 1];	570	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	571	((W)heap [k])->active = k + 1;
386	k >>= 1;	572	k >>= 1;
387	}	573	}
388		574
389	timers [k] = w;	575	heap [k] = w;
390	timers [k]->active = k + 1;	576	((W)heap [k])->active = k + 1;
391		577
392	}	578	}
393		579
394	static void	580	void inline_speed
395	downheap (WT *timers, int N, int k)	581	downheap (WT *heap, int N, int k)
396	{	582	{
397	WT w = timers [k];	583	WT w = heap [k];
398		584
399	while (k < (N >> 1))	585	while (k < (N >> 1))
400	{	586	{
401	int j = k << 1;	587	int j = k << 1;
402		588
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	590	++j;
405		591
406	if (w->at <= timers [j]->at)	592	if (w->at <= heap [j]->at)
407	break;	593	break;
408		594
409	timers [k] = timers [j];	595	heap [k] = heap [j];
410	timers [k]->active = k + 1;	596	((W)heap [k])->active = k + 1;
411	k = j;	597	k = j;
412	}	598	}
413		599
414	timers [k] = w;	600	heap [k] = w;
415	timers [k]->active = k + 1;	601	((W)heap [k])->active = k + 1;
		602	}
		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
416	}	609	}
417		610
418	/*****************************************************************************/	611	/*****************************************************************************/
419		612
420	typedef struct	613	typedef struct
421	{	614	{
422	struct ev_watcher_list *head;	615	WL head;
423	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
424	} ANSIG;	617	} ANSIG;
425		618
426	static ANSIG *signals;	619	static ANSIG *signals;
427	static int signalmax;	620	static int signalmax;
428		621
429	static int sigpipe [2];	622	static int sigpipe [2];
430	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
431	static struct ev_io sigev;	624	static ev_io sigev;
432		625
433	static void	626	void inline_size
434	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
435	{	628	{
436	while (count--)	629	while (count--)
437	{	630	{
438	base->head = 0;	631	base->head = 0;
…		…
443	}	636	}
444		637
445	static void	638	static void
446	sighandler (int signum)	639	sighandler (int signum)
447	{	640	{
		641	#if _WIN32
		642	signal (signum, sighandler);
		643	#endif
		644
448	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
449		646
450	if (!gotsig)	647	if (!gotsig)
451	{	648	{
452	int old_errno = errno;	649	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	652	errno = old_errno;
456	}	653	}
457	}	654	}
458		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
459	static void	676	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
461	{	678	{
462	struct ev_watcher_list *w;
463	int signum;	679	int signum;
464		680
465	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	682	gotsig = 0;
467		683
468	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
		686	ev_feed_signal_event (EV_A_ signum + 1);
		687	}
		688
		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
		702	siginit (EV_P)
		703	{
		704	fd_intern (sigpipe [0]);
		705	fd_intern (sigpipe [1]);
		706
		707	ev_io_set (&sigev, sigpipe [0], EV_READ);
		708	ev_io_start (EV_A_ &sigev);
		709	ev_unref (EV_A); /* child watcher should not keep loop alive */
		710	}
		711
		712	/*****************************************************************************/
		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
		716	#ifndef _WIN32
		717
		718	static ev_signal childev;
		719
		720	void inline_speed
		721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		722	{
		723	ev_child *w;
		724
		725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		726	if (w->pid == pid \|\| !w->pid)
470	{	727	{
471	signals [signum].gotsig = 0;	728	ev_priority (w) = ev_priority (sw); /* need to do it now */
472		729	w->rpid = pid;
473	for (w = signals [signum].head; w; w = w->next)	730	w->rstatus = status;
474	event (EV_A_ (W)w, EV_SIGNAL);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
475	}	732	}
476	}	733	}
477
478	static void
479	siginit (EV_P)
480	{
481	#ifndef WIN32
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485	/* rather than sort out wether we really need nb, set it */
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif
489
490	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}
494
495	/*****************************************************************************/
496
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];
509	static struct ev_signal childev;
510
511	#ifndef WIN32
512		734
513	#ifndef WCONTINUED	735	#ifndef WCONTINUED
514	# define WCONTINUED 0	736	# define WCONTINUED 0
515	#endif	737	#endif
516		738
517	static void	739	static void
518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
519	{
520	struct ev_child *w;
521
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
523	if (w->pid == pid \|\| !w->pid)
524	{
525	w->priority = sw->priority; /* need to do it now */
526	w->rpid = pid;
527	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);
529	}
530	}
531
532	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
534	{	741	{
535	int pid, status;	742	int pid, status;
536		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
538	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
539	/* 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 */
540	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		754
542	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
543	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 */
544	}
545	}	757	}
546		758
547	#endif	759	#endif
548		760
549	/*****************************************************************************/	761	/*****************************************************************************/
550		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
551	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
553	#endif	768	#endif
554	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	770	# include "ev_epoll.c"
556	#endif	771	#endif
557	#if EV_USEV_POLL	772	#if EV_USE_POLL
558	# include "ev_poll.c"	773	# include "ev_poll.c"
559	#endif	774	#endif
560	#if EV_USE_SELECT	775	#if EV_USE_SELECT
561	# include "ev_select.c"	776	# include "ev_select.c"
562	#endif	777	#endif
…		…
572	{	787	{
573	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
574	}	789	}
575		790
576	/* 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 */
577	static int	792	int inline_size
578	enable_secure (void)	793	enable_secure (void)
579	{	794	{
580	#ifdef WIN32	795	#ifdef _WIN32
581	return 0;	796	return 0;
582	#else	797	#else
583	return getuid () != geteuid ()	798	return getuid () != geteuid ()
584	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
585	#endif	800	#endif
586	}	801	}
587		802
588	int	803	unsigned int
589	ev_method (EV_P)	804	ev_supported_backends (void)
590	{	805	{
591	return method;	806	unsigned int flags = 0;
592	}
593		807
594	int	808	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
595	ev_init (EV_P_ int methods)	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)
596	{	819	{
597	if (!method)	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;
		847	}
		848
		849	static void
		850	loop_init (EV_P_ unsigned int flags)
		851	{
		852	if (!backend)
598	{	853	{
599	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
600	{	855	{
601	struct timespec ts;	856	struct timespec ts;
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	858	have_monotonic = 1;
604	}	859	}
605	#endif	860	#endif
606		861
607	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	863	mn_now = get_clock ();
609	now_floor = mn_now;	864	now_floor = mn_now;
610	diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
611		866
612	if (pipe (sigpipe))	867	if (!(flags & EVFLAG_NOENV)
613	return 0;	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
		870	flags = atoi (getenv ("LIBEV_FLAGS"));
614		871
615	if (methods == EVMETHOD_AUTO)	872	if (!(flags & 0x0000ffffUL))
616	if (!enable_secure () && getenv ("LIBmethodS"))	873	flags \|= ev_recommended_backends ();
617	methods = atoi (getenv ("LIBmethodS"));
618	else
619	methods = EVMETHOD_ANY;
620		874
621	method = 0;	875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		878	#endif
622	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624	#endif	881	#endif
625	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627	#endif	884	#endif
628	#if EV_USEV_POLL	885	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630	#endif	887	#endif
631	#if EV_USE_SELECT	888	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633	#endif	890	#endif
634		891
635	if (method)	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
		898	loop_destroy (EV_P)
		899	{
		900	int i;
		901
		902	#if EV_USE_PORT
		903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		904	#endif
		905	#if EV_USE_KQUEUE
		906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		907	#endif
		908	#if EV_USE_EPOLL
		909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		910	#endif
		911	#if EV_USE_POLL
		912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		913	#endif
		914	#if EV_USE_SELECT
		915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		916	#endif
		917
		918	for (i = NUMPRI; i--; )
		919	array_free (pending, [i]);
		920
		921	/* have to use the microsoft-never-gets-it-right macro */
		922	array_free (fdchange, EMPTY0);
		923	array_free (timer, EMPTY0);
		924	#if EV_PERIODIC_ENABLE
		925	array_free (periodic, EMPTY0);
		926	#endif
		927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
		930
		931	backend = 0;
		932	}
		933
		934	static void
		935	loop_fork (EV_P)
		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
		943	#if EV_USE_EPOLL
		944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		945	#endif
		946
		947	if (ev_is_active (&sigev))
		948	{
		949	/* default loop */
		950
		951	ev_ref (EV_A);
		952	ev_io_stop (EV_A_ &sigev);
		953	close (sigpipe [0]);
		954	close (sigpipe [1]);
		955
		956	while (pipe (sigpipe))
		957	syserr ("(libev) error creating pipe");
		958
		959	siginit (EV_A);
		960	}
		961
		962	postfork = 0;
		963	}
		964
		965	#if EV_MULTIPLICITY
		966	struct ev_loop *
		967	ev_loop_new (unsigned int flags)
		968	{
		969	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
		973	loop_init (EV_A_ flags);
		974
		975	if (ev_backend (EV_A))
		976	return loop;
		977
		978	return 0;
		979	}
		980
		981	void
		982	ev_loop_destroy (EV_P)
		983	{
		984	loop_destroy (EV_A);
		985	ev_free (loop);
		986	}
		987
		988	void
		989	ev_loop_fork (EV_P)
		990	{
		991	postfork = 1;
		992	}
		993
		994	#endif
		995
		996	#if EV_MULTIPLICITY
		997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
		999	#else
		1000	int
		1001	ev_default_loop (unsigned int flags)
		1002	#endif
		1003	{
		1004	if (sigpipe [0] == sigpipe [1])
		1005	if (pipe (sigpipe))
		1006	return 0;
		1007
		1008	if (!ev_default_loop_ptr)
		1009	{
		1010	#if EV_MULTIPLICITY
		1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1012	#else
		1013	ev_default_loop_ptr = 1;
		1014	#endif
		1015
		1016	loop_init (EV_A_ flags);
		1017
		1018	if (ev_backend (EV_A))
636	{	1019	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	1020	siginit (EV_A);
640		1021
641	#ifndef WIN32	1022	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	1027	#endif
647	}	1028	}
		1029	else
		1030	ev_default_loop_ptr = 0;
648	}	1031	}
649		1032
650	return method;	1033	return ev_default_loop_ptr;
		1034	}
		1035
		1036	void
		1037	ev_default_destroy (void)
		1038	{
		1039	#if EV_MULTIPLICITY
		1040	struct ev_loop *loop = ev_default_loop_ptr;
		1041	#endif
		1042
		1043	#ifndef _WIN32
		1044	ev_ref (EV_A); /* child watcher */
		1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
		1047
		1048	ev_ref (EV_A); /* signal watcher */
		1049	ev_io_stop (EV_A_ &sigev);
		1050
		1051	close (sigpipe [0]); sigpipe [0] = 0;
		1052	close (sigpipe [1]); sigpipe [1] = 0;
		1053
		1054	loop_destroy (EV_A);
		1055	}
		1056
		1057	void
		1058	ev_default_fork (void)
		1059	{
		1060	#if EV_MULTIPLICITY
		1061	struct ev_loop *loop = ev_default_loop_ptr;
		1062	#endif
		1063
		1064	if (backend)
		1065	postfork = 1;
651	}	1066	}
652		1067
653	/*****************************************************************************/	1068	/*****************************************************************************/
654		1069
655	void	1070	int inline_size
656	ev_fork_prepare (void)	1071	any_pending (EV_P)
657	{	1072	{
658	/* nop */	1073	int pri;
659	}
660		1074
661	void	1075	for (pri = NUMPRI; pri--; )
662	ev_fork_parent (void)	1076	if (pendingcnt [pri])
663	{	1077	return 1;
664	/* nop */
665	}
666		1078
667	void	1079	return 0;
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}	1080	}
681		1081
682	/*****************************************************************************/	1082	void inline_speed
683
684	static void
685	call_pending (EV_P)	1083	call_pending (EV_P)
686	{	1084	{
687	int pri;	1085	int pri;
688		1086
689	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
691	{	1089	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1091
694	if (p->w)	1092	if (expect_true (p->w))
695	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
696	p->w->pending = 0;	1096	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
698	}	1098	}
699	}	1099	}
700	}	1100	}
701		1101
702	static void	1102	void inline_size
703	timers_reify (EV_P)	1103	timers_reify (EV_P)
704	{	1104	{
705	while (timercnt && timers [0]->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1106	{
707	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
		1108
		1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		1110
709	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
710	if (w->repeat)	1112	if (w->repeat)
711	{	1113	{
712	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
713	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
714	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
715	}	1121	}
716	else	1122	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1124
719	event ((W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1126	}
721	}	1127	}
722		1128
723	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
724	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
725	{	1132	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1134	{
728	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
		1136
		1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
729		1138
730	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
731	if (w->interval)	1140	if (w->reschedule_cb)
732	{	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	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1151	}
737	else	1152	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1154
740	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1156	}
742	}	1157	}
743		1158
744	static void	1159	static void noinline
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1160	periodics_reschedule (EV_P)
746	{	1161	{
747	int i;	1162	int i;
748		1163
749	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
751	{	1166	{
752	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
753		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1171	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1173	}
767	}
768		1174
769	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
770	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
771	{	1183	{
772	mn_now = get_clock ();	1184	mn_now = get_clock ();
773		1185
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1187	{
776	rt_now = mn_now + diff;	1188	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1189	return 0;
778	}	1190	}
779	else	1191	else
780	{	1192	{
781	now_floor = mn_now;	1193	now_floor = mn_now;
782	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
783	return 1;	1195	return 1;
784	}	1196	}
785	}	1197	}
786		1198
787	static void	1199	void inline_size
788	time_update (EV_P)	1200	time_update (EV_P)
789	{	1201	{
790	int i;	1202	int i;
791		1203
792	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1205	if (expect_true (have_monotonic))
794	{	1206	{
795	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
796	{	1208	{
797	ev_tstamp odiff = diff;	1209	ev_tstamp odiff = rtmn_diff;
798		1210
799	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; )
800	{	1220	{
801	diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
802		1222
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1224	return; /* all is well */
805		1225
806	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1227	mn_now = get_clock ();
808	now_floor = mn_now;	1228	now_floor = mn_now;
809	}	1229	}
810		1230
		1231	# if EV_PERIODIC_ENABLE
811	periodics_reschedule (EV_A_ diff - odiff);	1232	periodics_reschedule (EV_A);
		1233	# endif
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
		1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1236	}
814	}	1237	}
815	else	1238	else
816	#endif	1239	#endif
817	{	1240	{
818	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
819		1242
820	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))
821	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1246	periodics_reschedule (EV_A);
		1247	#endif
823		1248
824	/* 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 */
825	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1252	}
828		1253
829	mn_now = rt_now;	1254	mn_now = ev_rt_now;
830	}	1255	}
831	}	1256	}
832		1257
833	void	1258	void
834	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
845	static int loop_done;	1270	static int loop_done;
846		1271
847	void	1272	void
848	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
849	{	1274	{
850	double block;
851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
852		1278
853	do	1279	while (activecnt)
854	{	1280	{
855	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
856	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
857	{	1283	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1285	call_pending (EV_A);
860	}	1286	}
861		1287
		1288	/* we might have forked, so reify kernel state if necessary */
		1289	if (expect_false (postfork))
		1290	loop_fork (EV_A);
		1291
862	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1293	fd_reify (EV_A);
864		1294
865	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
866		1298
867	/* we only need this for !monotonic clockor timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
868	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
869	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
872	else	1307	else
873	#endif	1308	#endif
874	{	1309	{
875	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1311	mn_now = ev_rt_now;
877	}	1312	}
878		1313
879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
880	block = 0.;
881	else
882	{
883	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
884		1315
885	if (timercnt)	1316	if (timercnt)
886	{	1317	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888	if (block > to) block = to;	1319	if (block > to) block = to;
889	}	1320	}
890		1321
		1322	#if EV_PERIODIC_ENABLE
891	if (periodiccnt)	1323	if (periodiccnt)
892	{	1324	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894	if (block > to) block = to;	1326	if (block > to) block = to;
895	}	1327	}
		1328	#endif
896		1329
897	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
898	}	1331	}
899		1332
900	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
901		1335
902	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1337	time_update (EV_A);
904		1338
905	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
907	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
908		1344
909	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
910	if (!pendingcnt)	1346	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1348
913	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
914	if (checkcnt)	1350	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1352
917	call_pending (EV_A);	1353	call_pending (EV_A);
918	}
919	while (activecnt && !loop_done);
920		1354
921	if (loop_done != 2)	1355	if (expect_false (loop_done))
922	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
923	}	1361	}
924		1362
925	void	1363	void
926	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
927	{	1365	{
928	loop_done = how;	1366	loop_done = how;
929	}	1367	}
930		1368
931	/*****************************************************************************/	1369	/*****************************************************************************/
932		1370
933	inline void	1371	void inline_size
934	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
935	{	1373	{
936	elem->next = *head;	1374	elem->next = *head;
937	*head = elem;	1375	*head = elem;
938	}	1376	}
939		1377
940	inline void	1378	void inline_size
941	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
942	{	1380	{
943	while (*head)	1381	while (*head)
944	{	1382	{
945	if (*head == elem)	1383	if (*head == elem)
…		…
950		1388
951	head = &(*head)->next;	1389	head = &(*head)->next;
952	}	1390	}
953	}	1391	}
954		1392
955	inline void	1393	void inline_speed
956	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
957	{	1395	{
958	if (w->pending)	1396	if (w->pending)
959	{	1397	{
960	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
961	w->pending = 0;	1399	w->pending = 0;
962	}	1400	}
963	}	1401	}
964		1402
965	inline void	1403	void inline_speed
966	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
967	{	1405	{
968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
970		1408
971	w->active = active;	1409	w->active = active;
972	ev_ref (EV_A);	1410	ev_ref (EV_A);
973	}	1411	}
974		1412
975	inline void	1413	void inline_size
976	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
977	{	1415	{
978	ev_unref (EV_A);	1416	ev_unref (EV_A);
979	w->active = 0;	1417	w->active = 0;
980	}	1418	}
981		1419
982	/*****************************************************************************/	1420	/*****************************************************************************/
983		1421
984	void	1422	void
985	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
986	{	1424	{
987	int fd = w->fd;	1425	int fd = w->fd;
988		1426
989	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
990	return;	1428	return;
991		1429
992	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
993		1431
994	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1435
998	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
999	}	1437	}
1000		1438
1001	void	1439	void
1002	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1003	{	1441	{
1004	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1006	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1007		1447
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1010		1450
1011	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1012	}	1452	}
1013		1453
1014	void	1454	void
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1016	{	1456	{
1017	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1018	return;	1458	return;
1019		1459
1020	w->at += mn_now;	1460	((WT)w)->at += mn_now;
1021		1461
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1463
1024	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1028	}
1029		1468
		1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1470	}
		1471
1030	void	1472	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1032	{	1474	{
1033	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1035	return;	1477	return;
1036		1478
		1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1480
1037	if (w->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1038	{	1482	{
1039	timers [w->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1485	}
1042		1486
1043	w->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1044		1488
1045	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1046	}	1490	}
1047		1491
1048	void	1492	void
1049	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1050	{	1494	{
1051	if (ev_is_active (w))	1495	if (ev_is_active (w))
1052	{	1496	{
1053	if (w->repeat)	1497	if (w->repeat)
1054	{	1498	{
1055	w->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1501	}
1058	else	1502	else
1059	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1060	}	1504	}
1061	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1063	}	1510	}
1064		1511
		1512	#if EV_PERIODIC_ENABLE
1065	void	1513	void
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1067	{	1515	{
1068	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1069	return;	1517	return;
1070		1518
		1519	if (w->reschedule_cb)
		1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1521	else if (w->interval)
		1522	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1526	}
1076		1527
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1081	}
1082		1532
		1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1534	}
		1535
1083	void	1536	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1085	{	1538	{
1086	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1088	return;	1541	return;
1089		1542
		1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1544
1090	if (w->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1091	{	1546	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1549	}
1095		1550
1096	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1097	}	1552	}
		1553
		1554	void
		1555	ev_periodic_again (EV_P_ ev_periodic *w)
		1556	{
		1557	/* TODO: use adjustheap and recalculation */
		1558	ev_periodic_stop (EV_A_ w);
		1559	ev_periodic_start (EV_A_ w);
		1560	}
		1561	#endif
1098		1562
1099	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1564	# define SA_RESTART 0
1101	#endif	1565	#endif
1102		1566
1103	void	1567	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1105	{	1569	{
		1570	#if EV_MULTIPLICITY
		1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1572	#endif
1106	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1107	return;	1574	return;
1108		1575
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1577
1111	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1581
1115	if (!w->next)	1582	if (!((WL)w)->next)
1116	{	1583	{
		1584	#if _WIN32
		1585	signal (w->signum, sighandler);
		1586	#else
1117	struct sigaction sa;	1587	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1590	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1591	sigaction (w->signum, &sa, 0);
		1592	#endif
1122	}	1593	}
1123	}	1594	}
1124		1595
1125	void	1596	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1127	{	1598	{
1128	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1130	return;	1601	return;
1131		1602
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1134		1605
1135	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1137	}	1608	}
1138		1609
1139	void	1610	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1207	{	1612	{
		1613	#if EV_MULTIPLICITY
		1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1615	#endif
1208	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1209	return;	1617	return;
1210		1618
1211	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	1621	}
1214		1622
1215	void	1623	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1217	{	1625	{
1218	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1220	return;	1628	return;
1221		1629
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1224	}	1632	}
1225		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# undef lstat
		1638	# define lstat(a,b) _stati64 (a,b)
		1639	# endif
		1640
		1641	#define DEF_STAT_INTERVAL 5.0074891
		1642	#define MIN_STAT_INTERVAL 0.1074891
		1643
		1644	void
		1645	ev_stat_stat (EV_P_ ev_stat *w)
		1646	{
		1647	if (lstat (w->path, &w->attr) < 0)
		1648	w->attr.st_nlink = 0;
		1649	else if (!w->attr.st_nlink)
		1650	w->attr.st_nlink = 1;
		1651	}
		1652
		1653	static void
		1654	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1655	{
		1656	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1657
		1658	/* we copy this here each the time so that */
		1659	/* prev has the old value when the callback gets invoked */
		1660	w->prev = w->attr;
		1661	ev_stat_stat (EV_A_ w);
		1662
		1663	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1664	ev_feed_event (EV_A_ w, EV_STAT);
		1665	}
		1666
		1667	void
		1668	ev_stat_start (EV_P_ ev_stat *w)
		1669	{
		1670	if (expect_false (ev_is_active (w)))
		1671	return;
		1672
		1673	/* since we use memcmp, we need to clear any padding data etc. */
		1674	memset (&w->prev, 0, sizeof (ev_statdata));
		1675	memset (&w->attr, 0, sizeof (ev_statdata));
		1676
		1677	ev_stat_stat (EV_A_ w);
		1678
		1679	if (w->interval < MIN_STAT_INTERVAL)
		1680	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1681
		1682	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1683	ev_set_priority (&w->timer, ev_priority (w));
		1684	ev_timer_start (EV_A_ &w->timer);
		1685
		1686	ev_start (EV_A_ (W)w, 1);
		1687	}
		1688
		1689	void
		1690	ev_stat_stop (EV_P_ ev_stat *w)
		1691	{
		1692	ev_clear_pending (EV_A_ (W)w);
		1693	if (expect_false (!ev_is_active (w)))
		1694	return;
		1695
		1696	ev_timer_stop (EV_A_ &w->timer);
		1697
		1698	ev_stop (EV_A_ (W)w);
		1699	}
		1700	#endif
		1701
		1702	void
		1703	ev_idle_start (EV_P_ ev_idle *w)
		1704	{
		1705	if (expect_false (ev_is_active (w)))
		1706	return;
		1707
		1708	ev_start (EV_A_ (W)w, ++idlecnt);
		1709	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1710	idles [idlecnt - 1] = w;
		1711	}
		1712
		1713	void
		1714	ev_idle_stop (EV_P_ ev_idle *w)
		1715	{
		1716	ev_clear_pending (EV_A_ (W)w);
		1717	if (expect_false (!ev_is_active (w)))
		1718	return;
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722	idles [active - 1] = idles [--idlecnt];
		1723	((W)idles [active - 1])->active = active;
		1724	}
		1725
		1726	ev_stop (EV_A_ (W)w);
		1727	}
		1728
		1729	void
		1730	ev_prepare_start (EV_P_ ev_prepare *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	ev_start (EV_A_ (W)w, ++preparecnt);
		1736	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1737	prepares [preparecnt - 1] = w;
		1738	}
		1739
		1740	void
		1741	ev_prepare_stop (EV_P_ ev_prepare *w)
		1742	{
		1743	ev_clear_pending (EV_A_ (W)w);
		1744	if (expect_false (!ev_is_active (w)))
		1745	return;
		1746
		1747	{
		1748	int active = ((W)w)->active;
		1749	prepares [active - 1] = prepares [--preparecnt];
		1750	((W)prepares [active - 1])->active = active;
		1751	}
		1752
		1753	ev_stop (EV_A_ (W)w);
		1754	}
		1755
		1756	void
		1757	ev_check_start (EV_P_ ev_check *w)
		1758	{
		1759	if (expect_false (ev_is_active (w)))
		1760	return;
		1761
		1762	ev_start (EV_A_ (W)w, ++checkcnt);
		1763	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1764	checks [checkcnt - 1] = w;
		1765	}
		1766
		1767	void
		1768	ev_check_stop (EV_P_ ev_check *w)
		1769	{
		1770	ev_clear_pending (EV_A_ (W)w);
		1771	if (expect_false (!ev_is_active (w)))
		1772	return;
		1773
		1774	{
		1775	int active = ((W)w)->active;
		1776	checks [active - 1] = checks [--checkcnt];
		1777	((W)checks [active - 1])->active = active;
		1778	}
		1779
		1780	ev_stop (EV_A_ (W)w);
		1781	}
		1782
		1783	#if EV_EMBED_ENABLE
		1784	void noinline
		1785	ev_embed_sweep (EV_P_ ev_embed *w)
		1786	{
		1787	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1788	}
		1789
		1790	static void
		1791	embed_cb (EV_P_ ev_io *io, int revents)
		1792	{
		1793	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1794
		1795	if (ev_cb (w))
		1796	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1797	else
		1798	ev_embed_sweep (loop, w);
		1799	}
		1800
		1801	void
		1802	ev_embed_start (EV_P_ ev_embed *w)
		1803	{
		1804	if (expect_false (ev_is_active (w)))
		1805	return;
		1806
		1807	{
		1808	struct ev_loop *loop = w->loop;
		1809	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1810	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1811	}
		1812
		1813	ev_set_priority (&w->io, ev_priority (w));
		1814	ev_io_start (EV_A_ &w->io);
		1815
		1816	ev_start (EV_A_ (W)w, 1);
		1817	}
		1818
		1819	void
		1820	ev_embed_stop (EV_P_ ev_embed *w)
		1821	{
		1822	ev_clear_pending (EV_A_ (W)w);
		1823	if (expect_false (!ev_is_active (w)))
		1824	return;
		1825
		1826	ev_io_stop (EV_A_ &w->io);
		1827
		1828	ev_stop (EV_A_ (W)w);
		1829	}
		1830	#endif
		1831
1226	/*****************************************************************************/	1832	/*****************************************************************************/
1227		1833
1228	struct ev_once	1834	struct ev_once
1229	{	1835	{
1230	struct ev_io io;	1836	ev_io io;
1231	struct ev_timer to;	1837	ev_timer to;
1232	void (cb)(int revents, void arg);	1838	void (cb)(int revents, void arg);
1233	void *arg;	1839	void *arg;
1234	};	1840	};
1235		1841
1236	static void	1842	static void
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1845	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1846	void *arg = once->arg;
1241		1847
1242	ev_io_stop (EV_A_ &once->io);	1848	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1849	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1850	ev_free (once);
1245		1851
1246	cb (revents, arg);	1852	cb (revents, arg);
1247	}	1853	}
1248		1854
1249	static void	1855	static void
1250	once_cb_io (EV_P_ struct ev_io *w, int revents)	1856	once_cb_io (EV_P_ ev_io *w, int revents)
1251	{	1857	{
1252	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1858	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1253	}	1859	}
1254		1860
1255	static void	1861	static void
1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1862	once_cb_to (EV_P_ ev_timer *w, int revents)
1257	{	1863	{
1258	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1864	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1259	}	1865	}
1260		1866
1261	void	1867	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1868	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1869	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1870	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1871
1266	if (!once)	1872	if (expect_false (!once))
		1873	{
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1874	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1875	return;
1269	{	1876	}
		1877
1270	once->cb = cb;	1878	once->cb = cb;
1271	once->arg = arg;	1879	once->arg = arg;
1272		1880
1273	ev_watcher_init (&once->io, once_cb_io);	1881	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1882	if (fd >= 0)
1275	{	1883	{
1276	ev_io_set (&once->io, fd, events);	1884	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1885	ev_io_start (EV_A_ &once->io);
1278	}	1886	}
1279		1887
1280	ev_watcher_init (&once->to, once_cb_to);	1888	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1889	if (timeout >= 0.)
1282	{	1890	{
1283	ev_timer_set (&once->to, timeout, 0.);	1891	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1892	ev_timer_start (EV_A_ &once->to);
1285	}
1286	}
1287	}
1288
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{	1893	}
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}	1894	}
1366		1895
		1896	#ifdef __cplusplus
		1897	}
1367	#endif	1898	#endif
1368		1899
1369
1370
1371

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Comparing libev/ev.c (file contents): Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs. Revision 1.146 by root, Tue Nov 27 09:17:51 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.146 by root, Tue Nov 27 09:17:51 2007 UTC