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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.154 by root, Wed Nov 28 11:53:37 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
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
91	/**/	219	/**/
92		220
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#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) */	222	#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 */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97
98	#include "ev.h"
99		224
100	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
102	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
103	#else	235	#else
104	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
105	# define inline static	238	# define inline_size static
		239	# define noinline
106	#endif	240	#endif
107		241
108	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
110		244
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
114	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
117		254
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		256
122	static int have_monotonic; /* runtime */	257	#ifdef _WIN32
123		258	# 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	259	#endif
156		260
157	/*****************************************************************************/	261	/*****************************************************************************/
158		262
159	inline ev_tstamp	263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, size_t size) = realloc;
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, size_t size)
		296	{
		297	ptr = alloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
		313	typedef struct
		314	{
		315	WL head;
		316	unsigned char events;
		317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
		321	} ANFD;
		322
		323	typedef struct
		324	{
		325	W w;
		326	int events;
		327	} ANPENDING;
		328
		329	typedef struct
		330	{
		331	#if EV_USE_INOTIFY
		332	WL head;
		333	#endif
		334	} ANFS;
		335
		336	#if EV_MULTIPLICITY
		337
		338	struct ev_loop
		339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
		342	#define VAR(name,decl) decl;
		343	#include "ev_vars.h"
		344	#undef VAR
		345	};
		346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
		350
		351	#else
		352
		353	ev_tstamp ev_rt_now;
		354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
		359
		360	#endif
		361
		362	/*****************************************************************************/
		363
		364	ev_tstamp
160	ev_time (void)	365	ev_time (void)
161	{	366	{
162	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
163	struct timespec ts;	368	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
168	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
169	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
170	#endif	375	#endif
171	}	376	}
172		377
173	inline ev_tstamp	378	ev_tstamp inline_size
174	get_clock (void)	379	get_clock (void)
175	{	380	{
176	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
177	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
178	{	383	{
…		…
183	#endif	388	#endif
184		389
185	return ev_time ();	390	return ev_time ();
186	}	391	}
187		392
		393	#if EV_MULTIPLICITY
188	ev_tstamp	394	ev_tstamp
189	ev_now (EV_P)	395	ev_now (EV_P)
190	{	396	{
191	return rt_now;	397	return ev_rt_now;
192	}	398	}
		399	#endif
193		400
194	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
195		402
196	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
198	{ \	405	{ \
199	int newcnt = cur; \	406	int newcnt = cur; \
200	do \	407	do \
201	{ \	408	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	410	} \
204	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
205	\	412	\
206	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	415	cur = newcnt; \
209	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		428
211	/*****************************************************************************/	429	/*****************************************************************************/
212		430
213	typedef struct	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
214	{	433	{
215	struct ev_watcher_list *head;	434	W w_ = (W)w;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219		435
220	static ANFD *anfds;	436	if (expect_false (w_->pending))
221	static int anfdmax;	437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
222		441
223	static void	442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
224	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
225	{	461	{
226	while (count--)	462	while (count--)
227	{	463	{
228	base->head = 0;	464	base->head = 0;
…		…
231		467
232	++base;	468	++base;
233	}	469	}
234	}	470	}
235		471
236	typedef struct	472	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)	473	fd_event (EV_P_ int fd, int revents)
271	{	474	{
272	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	476	ev_io *w;
274		477
275	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276	{	479	{
277	int ev = w->events & events;	480	int ev = w->events & revents;
278		481
279	if (ev)	482	if (ev)
280	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
281	}	484	}
282	}	485	}
283		486
284	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
285		492
286	static int *fdchanges;	493	void inline_size
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	494	fd_reify (EV_P)
291	{	495	{
292	int i;	496	int i;
293		497
294	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
295	{	499	{
296	int fd = fdchanges [i];	500	int fd = fdchanges [i];
297	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
298	struct ev_io *w;	502	ev_io *w;
299		503
300	int events = 0;	504	int events = 0;
301		505
302	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303	events |= w->events;	507	events |= w->events;
304		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
305	anfd->reify = 0;	518	anfd->reify = 0;
306		519
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	521	anfd->events = events;
311	}
312	}	522	}
313		523
314	fdchangecnt = 0;	524	fdchangecnt = 0;
315	}	525	}
316		526
317	static void	527	void inline_size
318	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
319	{	529	{
320	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
321	return;	531	return;
322		532
323	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
324		534
325	++fdchangecnt;	535	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
328	}	538	}
329		539
330	static void	540	void inline_speed
331	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
332	{	542	{
333	struct ev_io *w;	543	ev_io *w;
334		544
335	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
336	{	546	{
337	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
340	}	560	}
341		561
342	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
343	static void	563	static void noinline
344	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
345	{	565	{
346	int fd;	566	int fd;
347		567
348	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	569	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
352	}	572	}
353		573
354	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	575	static void noinline
356	fd_enomem (EV_P)	576	fd_enomem (EV_P)
357	{	577	{
358	int fd = anfdmax;	578	int fd;
359		579
360	while (fd--)	580	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	581	if (anfds [fd].events)
362	{	582	{
363	close (fd);
364	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
365	return;	584	return;
366	}	585	}
367	}	586	}
368		587
		588	/* usually called after fork if backend needs to re-arm all fds from scratch */
		589	static void noinline
		590	fd_rearm_all (EV_P)
		591	{
		592	int fd;
		593
		594	/* this should be highly optimised to not do anything but set a flag */
		595	for (fd = 0; fd < anfdmax; ++fd)
		596	if (anfds [fd].events)
		597	{
		598	anfds [fd].events = 0;
		599	fd_change (EV_A_ fd);
		600	}
		601	}
		602
369	/*****************************************************************************/	603	/*****************************************************************************/
370		604
371	static struct ev_timer **timers;	605	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)	606	upheap (WT *heap, int k)
379	{	607	{
380	WT w = timers [k];	608	WT w = heap [k];
381		609
382	while (k && timers [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
383	{	611	{
384	timers [k] = timers [k >> 1];	612	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	613	((W)heap [k])->active = k + 1;
386	k >>= 1;	614	k >>= 1;
387	}	615	}
388		616
389	timers [k] = w;	617	heap [k] = w;
390	timers [k]->active = k + 1;	618	((W)heap [k])->active = k + 1;
391		619
392	}	620	}
393		621
394	static void	622	void inline_speed
395	downheap (WT *timers, int N, int k)	623	downheap (WT *heap, int N, int k)
396	{	624	{
397	WT w = timers [k];	625	WT w = heap [k];
398		626
399	while (k < (N >> 1))	627	while (k < (N >> 1))
400	{	628	{
401	int j = k << 1;	629	int j = k << 1;
402		630
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	631	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	632	++j;
405		633
406	if (w->at <= timers [j]->at)	634	if (w->at <= heap [j]->at)
407	break;	635	break;
408		636
409	timers [k] = timers [j];	637	heap [k] = heap [j];
410	timers [k]->active = k + 1;	638	((W)heap [k])->active = k + 1;
411	k = j;	639	k = j;
412	}	640	}
413		641
414	timers [k] = w;	642	heap [k] = w;
415	timers [k]->active = k + 1;	643	((W)heap [k])->active = k + 1;
		644	}
		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
416	}	651	}
417		652
418	/*****************************************************************************/	653	/*****************************************************************************/
419		654
420	typedef struct	655	typedef struct
421	{	656	{
422	struct ev_watcher_list *head;	657	WL head;
423	sig_atomic_t volatile gotsig;	658	sig_atomic_t volatile gotsig;
424	} ANSIG;	659	} ANSIG;
425		660
426	static ANSIG *signals;	661	static ANSIG *signals;
427	static int signalmax;	662	static int signalmax;
428		663
429	static int sigpipe [2];	664	static int sigpipe [2];
430	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
431	static struct ev_io sigev;	666	static ev_io sigev;
432		667
433	static void	668	void inline_size
434	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
435	{	670	{
436	while (count--)	671	while (count--)
437	{	672	{
438	base->head = 0;	673	base->head = 0;
…		…
443	}	678	}
444		679
445	static void	680	static void
446	sighandler (int signum)	681	sighandler (int signum)
447	{	682	{
		683	#if _WIN32
		684	signal (signum, sighandler);
		685	#endif
		686
448	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
449		688
450	if (!gotsig)	689	if (!gotsig)
451	{	690	{
452	int old_errno = errno;	691	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	694	errno = old_errno;
456	}	695	}
457	}	696	}
458		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 || signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
459	static void	718	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
461	{	720	{
462	struct ev_watcher_list *w;
463	int signum;	721	int signum;
464		722
465	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	724	gotsig = 0;
467		725
468	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
		728	ev_feed_signal_event (EV_A_ signum + 1);
		729	}
		730
		731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
		744	siginit (EV_P)
		745	{
		746	fd_intern (sigpipe [0]);
		747	fd_intern (sigpipe [1]);
		748
		749	ev_io_set (&sigev, sigpipe [0], EV_READ);
		750	ev_io_start (EV_A_ &sigev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
		752	}
		753
		754	/*****************************************************************************/
		755
		756	static ev_child *childs [EV_PID_HASHSIZE];
		757
		758	#ifndef _WIN32
		759
		760	static ev_signal childev;
		761
		762	void inline_speed
		763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		764	{
		765	ev_child *w;
		766
		767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		768	if (w->pid == pid || !w->pid)
470	{	769	{
471	signals [signum].gotsig = 0;	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
472		771	w->rpid = pid;
473	for (w = signals [signum].head; w; w = w->next)	772	w->rstatus = status;
474	event (EV_A_ (W)w, EV_SIGNAL);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
475	}	774	}
476	}	775	}
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	}
493
494	/*****************************************************************************/
495
496	static struct ev_idle **idles;
497	static int idlemax, idlecnt;
498
499	static struct ev_prepare **prepares;
500	static int preparemax, preparecnt;
501
502	static struct ev_check **checks;
503	static int checkmax, checkcnt;
504
505	/*****************************************************************************/
506
507	static struct ev_child *childs [PID_HASHSIZE];
508	static struct ev_signal childev;
509
510	#ifndef WIN32
511		776
512	#ifndef WCONTINUED	777	#ifndef WCONTINUED
513	# define WCONTINUED 0	778	# define WCONTINUED 0
514	#endif	779	#endif
515		780
516	static void	781	static void
517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518	{
519	struct ev_child *w;
520
521	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522	if (w->pid == pid || !w->pid)
523	{
524	w->priority = sw->priority; /* need to do it *now* */
525	w->rpid = pid;
526	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);
528	}
529	}
530
531	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
533	{	783	{
534	int pid, status;	784	int pid, status;
535		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
538	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
539	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		796
541	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543	}
544	}	800	}
545		801
546	#endif	802	#endif
547		803
548	/*****************************************************************************/	804	/*****************************************************************************/
549		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
550	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
552	#endif	811	#endif
553	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	813	# include "ev_epoll.c"
555	#endif	814	#endif
556	#if EV_USEV_POLL	815	#if EV_USE_POLL
557	# include "ev_poll.c"	816	# include "ev_poll.c"
558	#endif	817	#endif
559	#if EV_USE_SELECT	818	#if EV_USE_SELECT
560	# include "ev_select.c"	819	# include "ev_select.c"
561	#endif	820	#endif
…		…
571	{	830	{
572	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
573	}	832	}
574		833
575	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
576	static int	835	int inline_size
577	enable_secure (void)	836	enable_secure (void)
578	{	837	{
579	#ifdef WIN32	838	#ifdef _WIN32
580	return 0;	839	return 0;
581	#else	840	#else
582	return getuid () != geteuid ()	841	return getuid () != geteuid ()
583	|| getgid () != getegid ();	842	|| getgid () != getegid ();
584	#endif	843	#endif
585	}	844	}
586		845
587	int	846	unsigned int
588	ev_method (EV_P)	847	ev_supported_backends (void)
589	{	848	{
590	return method;	849	unsigned int flags = 0;
591	}
592		850
593	int	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594	ev_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
595	{	862	{
596	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
597	{	896	{
598	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
599	{	898	{
600	struct timespec ts;	899	struct timespec ts;
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	901	have_monotonic = 1;
603	}	902	}
604	#endif	903	#endif
605		904
606	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	906	mn_now = get_clock ();
608	now_floor = mn_now;	907	now_floor = mn_now;
609	diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
610		909
611	if (pipe (sigpipe))	910	if (!(flags & EVFLAG_NOENV)
612	return 0;	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
		913	flags = atoi (getenv ("LIBEV_FLAGS"));
613		914
614	if (methods == EVMETHOD_AUTO)	915	if (!(flags & 0x0000ffffUL))
615	if (!enable_secure () && getenv ("LIBmethodS"))	916	flags |= ev_recommended_backends ();
616	methods = atoi (getenv ("LIBmethodS"));
617	else
618	methods = EVMETHOD_ANY;
619		917
620	method = 0;	918	backend = 0;
		919	backend_fd = -1;
		920	#if EV_USE_INOTIFY
		921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		926	#endif
621	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623	#endif	929	#endif
624	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626	#endif	932	#endif
627	#if EV_USEV_POLL	933	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629	#endif	935	#endif
630	#if EV_USE_SELECT	936	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632	#endif	938	#endif
633		939
634	if (method)	940	ev_init (&sigev, sigcb);
		941	ev_set_priority (&sigev, EV_MAXPRI);
		942	}
		943	}
		944
		945	static void noinline
		946	loop_destroy (EV_P)
		947	{
		948	int i;
		949
		950	#if EV_USE_INOTIFY
		951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		960	#endif
		961	#if EV_USE_KQUEUE
		962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		963	#endif
		964	#if EV_USE_EPOLL
		965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		966	#endif
		967	#if EV_USE_POLL
		968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		969	#endif
		970	#if EV_USE_SELECT
		971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		972	#endif
		973
		974	for (i = NUMPRI; i--; )
		975	array_free (pending, [i]);
		976
		977	/* have to use the microsoft-never-gets-it-right macro */
		978	array_free (fdchange, EMPTY0);
		979	array_free (timer, EMPTY0);
		980	#if EV_PERIODIC_ENABLE
		981	array_free (periodic, EMPTY0);
		982	#endif
		983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
		986
		987	backend = 0;
		988	}
		989
		990	void inline_size infy_fork (EV_P);
		991
		992	void inline_size
		993	loop_fork (EV_P)
		994	{
		995	#if EV_USE_PORT
		996	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		997	#endif
		998	#if EV_USE_KQUEUE
		999	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1000	#endif
		1001	#if EV_USE_EPOLL
		1002	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1003	#endif
		1004	#if EV_USE_INOTIFY
		1005	infy_fork (EV_A);
		1006	#endif
		1007
		1008	if (ev_is_active (&sigev))
		1009	{
		1010	/* default loop */
		1011
		1012	ev_ref (EV_A);
		1013	ev_io_stop (EV_A_ &sigev);
		1014	close (sigpipe [0]);
		1015	close (sigpipe [1]);
		1016
		1017	while (pipe (sigpipe))
		1018	syserr ("(libev) error creating pipe");
		1019
		1020	siginit (EV_A);
		1021	}
		1022
		1023	postfork = 0;
		1024	}
		1025
		1026	#if EV_MULTIPLICITY
		1027	struct ev_loop *
		1028	ev_loop_new (unsigned int flags)
		1029	{
		1030	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1031
		1032	memset (loop, 0, sizeof (struct ev_loop));
		1033
		1034	loop_init (EV_A_ flags);
		1035
		1036	if (ev_backend (EV_A))
		1037	return loop;
		1038
		1039	return 0;
		1040	}
		1041
		1042	void
		1043	ev_loop_destroy (EV_P)
		1044	{
		1045	loop_destroy (EV_A);
		1046	ev_free (loop);
		1047	}
		1048
		1049	void
		1050	ev_loop_fork (EV_P)
		1051	{
		1052	postfork = 1;
		1053	}
		1054
		1055	#endif
		1056
		1057	#if EV_MULTIPLICITY
		1058	struct ev_loop *
		1059	ev_default_loop_init (unsigned int flags)
		1060	#else
		1061	int
		1062	ev_default_loop (unsigned int flags)
		1063	#endif
		1064	{
		1065	if (sigpipe [0] == sigpipe [1])
		1066	if (pipe (sigpipe))
		1067	return 0;
		1068
		1069	if (!ev_default_loop_ptr)
		1070	{
		1071	#if EV_MULTIPLICITY
		1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1073	#else
		1074	ev_default_loop_ptr = 1;
		1075	#endif
		1076
		1077	loop_init (EV_A_ flags);
		1078
		1079	if (ev_backend (EV_A))
635	{	1080	{
636	ev_watcher_init (&sigev, sigcb);
637	ev_set_priority (&sigev, EV_MAXPRI);
638	siginit (EV_A);	1081	siginit (EV_A);
639		1082
640	#ifndef WIN32	1083	#ifndef _WIN32
641	ev_signal_init (&childev, childcb, SIGCHLD);	1084	ev_signal_init (&childev, childcb, SIGCHLD);
642	ev_set_priority (&childev, EV_MAXPRI);	1085	ev_set_priority (&childev, EV_MAXPRI);
643	ev_signal_start (EV_A_ &childev);	1086	ev_signal_start (EV_A_ &childev);
		1087	ev_unref (EV_A); /* child watcher should not keep loop alive */
644	#endif	1088	#endif
645	}	1089	}
		1090	else
		1091	ev_default_loop_ptr = 0;
646	}	1092	}
647		1093
648	return method;	1094	return ev_default_loop_ptr;
		1095	}
		1096
		1097	void
		1098	ev_default_destroy (void)
		1099	{
		1100	#if EV_MULTIPLICITY
		1101	struct ev_loop *loop = ev_default_loop_ptr;
		1102	#endif
		1103
		1104	#ifndef _WIN32
		1105	ev_ref (EV_A); /* child watcher */
		1106	ev_signal_stop (EV_A_ &childev);
		1107	#endif
		1108
		1109	ev_ref (EV_A); /* signal watcher */
		1110	ev_io_stop (EV_A_ &sigev);
		1111
		1112	close (sigpipe [0]); sigpipe [0] = 0;
		1113	close (sigpipe [1]); sigpipe [1] = 0;
		1114
		1115	loop_destroy (EV_A);
		1116	}
		1117
		1118	void
		1119	ev_default_fork (void)
		1120	{
		1121	#if EV_MULTIPLICITY
		1122	struct ev_loop *loop = ev_default_loop_ptr;
		1123	#endif
		1124
		1125	if (backend)
		1126	postfork = 1;
649	}	1127	}
650		1128
651	/*****************************************************************************/	1129	/*****************************************************************************/
652		1130
653	void	1131	int inline_size
654	ev_fork_prepare (void)	1132	any_pending (EV_P)
655	{	1133	{
656	/* nop */	1134	int pri;
657	}
658		1135
659	void	1136	for (pri = NUMPRI; pri--; )
660	ev_fork_parent (void)	1137	if (pendingcnt [pri])
661	{	1138	return 1;
662	/* nop */
663	}
664		1139
665	void	1140	return 0;
666	ev_fork_child (void)
667	{
668	#if EV_USE_EPOLL
669	if (method == EVMETHOD_EPOLL)
670	epoll_postfork_child ();
671	#endif
672
673	ev_io_stop (&sigev);
674	close (sigpipe [0]);
675	close (sigpipe [1]);
676	pipe (sigpipe);
677	siginit ();
678	}	1141	}
679		1142
680	/*****************************************************************************/	1143	void inline_speed
681
682	static void
683	call_pending (EV_P)	1144	call_pending (EV_P)
684	{	1145	{
685	int pri;	1146	int pri;
686		1147
687	for (pri = NUMPRI; pri--; )	1148	for (pri = NUMPRI; pri--; )
688	while (pendingcnt [pri])	1149	while (pendingcnt [pri])
689	{	1150	{
690	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1151	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691		1152
692	if (p->w)	1153	if (expect_true (p->w))
693	{	1154	{
		1155	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1156
694	p->w->pending = 0;	1157	p->w->pending = 0;
695	p->w->cb (EV_A_ p->w, p->events);	1158	EV_CB_INVOKE (p->w, p->events);
696	}	1159	}
697	}	1160	}
698	}	1161	}
699		1162
700	static void	1163	void inline_size
701	timers_reify (EV_P)	1164	timers_reify (EV_P)
702	{	1165	{
703	while (timercnt && timers [0]->at <= mn_now)	1166	while (timercnt && ((WT)timers [0])->at <= mn_now)
704	{	1167	{
705	struct ev_timer *w = timers [0];	1168	ev_timer *w = timers [0];
		1169
		1170	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
706		1171
707	/* first reschedule or stop timer */	1172	/* first reschedule or stop timer */
708	if (w->repeat)	1173	if (w->repeat)
709	{	1174	{
710	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1175	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1176
711	w->at = mn_now + w->repeat;	1177	((WT)w)->at += w->repeat;
		1178	if (((WT)w)->at < mn_now)
		1179	((WT)w)->at = mn_now;
		1180
712	downheap ((WT *)timers, timercnt, 0);	1181	downheap ((WT *)timers, timercnt, 0);
713	}	1182	}
714	else	1183	else
715	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716		1185
717	event ((W)w, EV_TIMEOUT);	1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718	}	1187	}
719	}	1188	}
720		1189
721	static void	1190	#if EV_PERIODIC_ENABLE
		1191	void inline_size
722	periodics_reify (EV_P)	1192	periodics_reify (EV_P)
723	{	1193	{
724	while (periodiccnt && periodics [0]->at <= rt_now)	1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725	{	1195	{
726	struct ev_periodic *w = periodics [0];	1196	ev_periodic *w = periodics [0];
		1197
		1198	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
727		1199
728	/* first reschedule or stop timer */	1200	/* first reschedule or stop timer */
729	if (w->interval)	1201	if (w->reschedule_cb)
730	{	1202	{
		1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1205	downheap ((WT *)periodics, periodiccnt, 0);
		1206	}
		1207	else if (w->interval)
		1208	{
731	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
732	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733	downheap ((WT *)periodics, periodiccnt, 0);	1211	downheap ((WT *)periodics, periodiccnt, 0);
734	}	1212	}
735	else	1213	else
736	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737		1215
738	event (EV_A_ (W)w, EV_PERIODIC);	1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739	}	1217	}
740	}	1218	}
741		1219
742	static void	1220	static void noinline
743	periodics_reschedule (EV_P_ ev_tstamp diff)	1221	periodics_reschedule (EV_P)
744	{	1222	{
745	int i;	1223	int i;
746		1224
747	/* adjust periodics after time jump */	1225	/* adjust periodics after time jump */
748	for (i = 0; i < periodiccnt; ++i)	1226	for (i = 0; i < periodiccnt; ++i)
749	{	1227	{
750	struct ev_periodic *w = periodics [i];	1228	ev_periodic *w = periodics [i];
751		1229
		1230	if (w->reschedule_cb)
		1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752	if (w->interval)	1232	else if (w->interval)
753	{
754	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
755
756	if (fabs (diff) >= 1e-4)
757	{
758	ev_periodic_stop (EV_A_ w);
759	ev_periodic_start (EV_A_ w);
760
761	i = 0; /* restart loop, inefficient, but time jumps should be rare */
762	}
763	}
764	}	1234	}
765	}
766		1235
767	inline int	1236	/* now rebuild the heap */
		1237	for (i = periodiccnt >> 1; i--; )
		1238	downheap ((WT *)periodics, periodiccnt, i);
		1239	}
		1240	#endif
		1241
		1242	int inline_size
768	time_update_monotonic (EV_P)	1243	time_update_monotonic (EV_P)
769	{	1244	{
770	mn_now = get_clock ();	1245	mn_now = get_clock ();
771		1246
772	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773	{	1248	{
774	rt_now = mn_now + diff;	1249	ev_rt_now = rtmn_diff + mn_now;
775	return 0;	1250	return 0;
776	}	1251	}
777	else	1252	else
778	{	1253	{
779	now_floor = mn_now;	1254	now_floor = mn_now;
780	rt_now = ev_time ();	1255	ev_rt_now = ev_time ();
781	return 1;	1256	return 1;
782	}	1257	}
783	}	1258	}
784		1259
785	static void	1260	void inline_size
786	time_update (EV_P)	1261	time_update (EV_P)
787	{	1262	{
788	int i;	1263	int i;
789		1264
790	#if EV_USE_MONOTONIC	1265	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1266	if (expect_true (have_monotonic))
792	{	1267	{
793	if (time_update_monotonic (EV_A))	1268	if (time_update_monotonic (EV_A))
794	{	1269	{
795	ev_tstamp odiff = diff;	1270	ev_tstamp odiff = rtmn_diff;
796		1271
797	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1272	/* loop a few times, before making important decisions.
		1273	* on the choice of "4": one iteration isn't enough,
		1274	* in case we get preempted during the calls to
		1275	* ev_time and get_clock. a second call is almost guarenteed
		1276	* to succeed in that case, though. and looping a few more times
		1277	* doesn't hurt either as we only do this on time-jumps or
		1278	* in the unlikely event of getting preempted here.
		1279	*/
		1280	for (i = 4; --i; )
798	{	1281	{
799	diff = rt_now - mn_now;	1282	rtmn_diff = ev_rt_now - mn_now;
800		1283
801	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802	return; /* all is well */	1285	return; /* all is well */
803		1286
804	rt_now = ev_time ();	1287	ev_rt_now = ev_time ();
805	mn_now = get_clock ();	1288	mn_now = get_clock ();
806	now_floor = mn_now;	1289	now_floor = mn_now;
807	}	1290	}
808		1291
		1292	# if EV_PERIODIC_ENABLE
809	periodics_reschedule (EV_A_ diff - odiff);	1293	periodics_reschedule (EV_A);
		1294	# endif
810	/* no timer adjustment, as the monotonic clock doesn't jump */	1295	/* no timer adjustment, as the monotonic clock doesn't jump */
		1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811	}	1297	}
812	}	1298	}
813	else	1299	else
814	#endif	1300	#endif
815	{	1301	{
816	rt_now = ev_time ();	1302	ev_rt_now = ev_time ();
817		1303
818	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1304	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819	{	1305	{
		1306	#if EV_PERIODIC_ENABLE
820	periodics_reschedule (EV_A_ rt_now - mn_now);	1307	periodics_reschedule (EV_A);
		1308	#endif
821		1309
822	/* adjust timers. this is easy, as the offset is the same for all */	1310	/* adjust timers. this is easy, as the offset is the same for all */
823	for (i = 0; i < timercnt; ++i)	1311	for (i = 0; i < timercnt; ++i)
824	timers [i]->at += diff;	1312	((WT)timers [i])->at += ev_rt_now - mn_now;
825	}	1313	}
826		1314
827	mn_now = rt_now;	1315	mn_now = ev_rt_now;
828	}	1316	}
829	}	1317	}
830		1318
831	void	1319	void
832	ev_ref (EV_P)	1320	ev_ref (EV_P)
…		…
843	static int loop_done;	1331	static int loop_done;
844		1332
845	void	1333	void
846	ev_loop (EV_P_ int flags)	1334	ev_loop (EV_P_ int flags)
847	{	1335	{
848	double block;
849	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1336	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1337	? EVUNLOOP_ONE
		1338	: EVUNLOOP_CANCEL;
850		1339
851	do	1340	while (activecnt)
852	{	1341	{
		1342	/* we might have forked, so reify kernel state if necessary */
		1343	#if EV_FORK_ENABLE
		1344	if (expect_false (postfork))
		1345	if (forkcnt)
		1346	{
		1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1348	call_pending (EV_A);
		1349	}
		1350	#endif
		1351
853	/* queue check watchers (and execute them) */	1352	/* queue check watchers (and execute them) */
854	if (expect_false (preparecnt))	1353	if (expect_false (preparecnt))
855	{	1354	{
856	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857	call_pending (EV_A);	1356	call_pending (EV_A);
858	}	1357	}
859		1358
		1359	/* we might have forked, so reify kernel state if necessary */
		1360	if (expect_false (postfork))
		1361	loop_fork (EV_A);
		1362
860	/* update fd-related kernel structures */	1363	/* update fd-related kernel structures */
861	fd_reify (EV_A);	1364	fd_reify (EV_A);
862		1365
863	/* calculate blocking time */	1366	/* calculate blocking time */
		1367	{
		1368	double block;
864		1369
865	/* we only need this for !monotonic clockor timers, but as we basically	1370	if (flags & EVLOOP_NONBLOCK || idlecnt)
866	always have timers, we just calculate it always */	1371	block = 0.; /* do not block at all */
		1372	else
		1373	{
		1374	/* update time to cancel out callback processing overhead */
867	#if EV_USE_MONOTONIC	1375	#if EV_USE_MONOTONIC
868	if (expect_true (have_monotonic))	1376	if (expect_true (have_monotonic))
869	time_update_monotonic (EV_A);	1377	time_update_monotonic (EV_A);
870	else	1378	else
871	#endif	1379	#endif
872	{	1380	{
873	rt_now = ev_time ();	1381	ev_rt_now = ev_time ();
874	mn_now = rt_now;	1382	mn_now = ev_rt_now;
875	}	1383	}
876		1384
877	if (flags & EVLOOP_NONBLOCK || idlecnt)
878	block = 0.;
879	else
880	{
881	block = MAX_BLOCKTIME;	1385	block = MAX_BLOCKTIME;
882		1386
883	if (timercnt)	1387	if (timercnt)
884	{	1388	{
885	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
886	if (block > to) block = to;	1390	if (block > to) block = to;
887	}	1391	}
888		1392
		1393	#if EV_PERIODIC_ENABLE
889	if (periodiccnt)	1394	if (periodiccnt)
890	{	1395	{
891	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
892	if (block > to) block = to;	1397	if (block > to) block = to;
893	}	1398	}
		1399	#endif
894		1400
895	if (block < 0.) block = 0.;	1401	if (expect_false (block < 0.)) block = 0.;
896	}	1402	}
897		1403
898	method_poll (EV_A_ block);	1404	backend_poll (EV_A_ block);
		1405	}
899		1406
900	/* update rt_now, do magic */	1407	/* update ev_rt_now, do magic */
901	time_update (EV_A);	1408	time_update (EV_A);
902		1409
903	/* queue pending timers and reschedule them */	1410	/* queue pending timers and reschedule them */
904	timers_reify (EV_A); /* relative timers called last */	1411	timers_reify (EV_A); /* relative timers called last */
		1412	#if EV_PERIODIC_ENABLE
905	periodics_reify (EV_A); /* absolute timers called first */	1413	periodics_reify (EV_A); /* absolute timers called first */
		1414	#endif
906		1415
907	/* queue idle watchers unless io or timers are pending */	1416	/* queue idle watchers unless other events are pending */
908	if (!pendingcnt)	1417	if (idlecnt && !any_pending (EV_A))
909	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910		1419
911	/* queue check watchers, to be executed first */	1420	/* queue check watchers, to be executed first */
912	if (checkcnt)	1421	if (expect_false (checkcnt))
913	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914		1423
915	call_pending (EV_A);	1424	call_pending (EV_A);
916	printf ("activecnt %d\n", activecnt);//D
917	}
918	while (activecnt && !loop_done);
919		1425
920	if (loop_done != 2)	1426	if (expect_false (loop_done))
921	loop_done = 0;	1427	break;
		1428	}
		1429
		1430	if (loop_done == EVUNLOOP_ONE)
		1431	loop_done = EVUNLOOP_CANCEL;
922	}	1432	}
923		1433
924	void	1434	void
925	ev_unloop (EV_P_ int how)	1435	ev_unloop (EV_P_ int how)
926	{	1436	{
927	loop_done = how;	1437	loop_done = how;
928	}	1438	}
929		1439
930	/*****************************************************************************/	1440	/*****************************************************************************/
931		1441
932	inline void	1442	void inline_size
933	wlist_add (WL *head, WL elem)	1443	wlist_add (WL *head, WL elem)
934	{	1444	{
935	elem->next = *head;	1445	elem->next = *head;
936	*head = elem;	1446	*head = elem;
937	}	1447	}
938		1448
939	inline void	1449	void inline_size
940	wlist_del (WL *head, WL elem)	1450	wlist_del (WL *head, WL elem)
941	{	1451	{
942	while (*head)	1452	while (*head)
943	{	1453	{
944	if (*head == elem)	1454	if (*head == elem)
…		…
949		1459
950	head = &(*head)->next;	1460	head = &(*head)->next;
951	}	1461	}
952	}	1462	}
953		1463
954	inline void	1464	void inline_speed
955	ev_clear_pending (EV_P_ W w)	1465	ev_clear_pending (EV_P_ W w)
956	{	1466	{
957	if (w->pending)	1467	if (w->pending)
958	{	1468	{
959	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;
960	w->pending = 0;	1470	w->pending = 0;
961	}	1471	}
962	}	1472	}
963		1473
964	inline void	1474	void inline_speed
965	ev_start (EV_P_ W w, int active)	1475	ev_start (EV_P_ W w, int active)
966	{	1476	{
967	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
968	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969		1479
970	w->active = active;	1480	w->active = active;
971	ev_ref (EV_A);	1481	ev_ref (EV_A);
972	}	1482	}
973		1483
974	inline void	1484	void inline_size
975	ev_stop (EV_P_ W w)	1485	ev_stop (EV_P_ W w)
976	{	1486	{
977	ev_unref (EV_A);	1487	ev_unref (EV_A);
978	w->active = 0;	1488	w->active = 0;
979	}	1489	}
980		1490
981	/*****************************************************************************/	1491	/*****************************************************************************/
982		1492
983	void	1493	void
984	ev_io_start (EV_P_ struct ev_io *w)	1494	ev_io_start (EV_P_ ev_io *w)
985	{	1495	{
986	int fd = w->fd;	1496	int fd = w->fd;
987		1497
988	if (ev_is_active (w))	1498	if (expect_false (ev_is_active (w)))
989	return;	1499	return;
990		1500
991	assert (("ev_io_start called with negative fd", fd >= 0));	1501	assert (("ev_io_start called with negative fd", fd >= 0));
992		1502
993	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
994	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);
996		1506
997	fd_change (EV_A_ fd);	1507	fd_change (EV_A_ fd);
998	}	1508	}
999		1509
1000	void	1510	void
1001	ev_io_stop (EV_P_ struct ev_io *w)	1511	ev_io_stop (EV_P_ ev_io *w)
1002	{	1512	{
1003	ev_clear_pending (EV_A_ (W)w);	1513	ev_clear_pending (EV_A_ (W)w);
1004	if (!ev_is_active (w))	1514	if (expect_false (!ev_is_active (w)))
1005	return;	1515	return;
		1516
		1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1006		1518
1007	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008	ev_stop (EV_A_ (W)w);	1520	ev_stop (EV_A_ (W)w);
1009		1521
1010	fd_change (EV_A_ w->fd);	1522	fd_change (EV_A_ w->fd);
1011	}	1523	}
1012		1524
1013	void	1525	void
1014	ev_timer_start (EV_P_ struct ev_timer *w)	1526	ev_timer_start (EV_P_ ev_timer *w)
1015	{	1527	{
1016	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1017	return;	1529	return;
1018		1530
1019	w->at += mn_now;	1531	((WT)w)->at += mn_now;
1020		1532
1021	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022		1534
1023	ev_start (EV_A_ (W)w, ++timercnt);	1535	ev_start (EV_A_ (W)w, ++timercnt);
1024	array_needsize (timers, timermax, timercnt, );	1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1025	timers [timercnt - 1] = w;	1537	timers [timercnt - 1] = w;
1026	upheap ((WT *)timers, timercnt - 1);	1538	upheap ((WT *)timers, timercnt - 1);
1027	}
1028		1539
		1540	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1541	}
		1542
1029	void	1543	void
1030	ev_timer_stop (EV_P_ struct ev_timer *w)	1544	ev_timer_stop (EV_P_ ev_timer *w)
1031	{	1545	{
1032	ev_clear_pending (EV_A_ (W)w);	1546	ev_clear_pending (EV_A_ (W)w);
1033	if (!ev_is_active (w))	1547	if (expect_false (!ev_is_active (w)))
1034	return;	1548	return;
1035		1549
1036	if (w->active < timercnt--)	1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1551
		1552	{
		1553	int active = ((W)w)->active;
		1554
		1555	if (expect_true (--active < --timercnt))
1037	{	1556	{
1038	timers [w->active - 1] = timers [timercnt];	1557	timers [active] = timers [timercnt];
1039	downheap ((WT *)timers, timercnt, w->active - 1);	1558	adjustheap ((WT *)timers, timercnt, active);
1040	}	1559	}
		1560	}
1041		1561
1042	w->at = w->repeat;	1562	((WT)w)->at -= mn_now;
1043		1563
1044	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1045	}	1565	}
1046		1566
1047	void	1567	void
1048	ev_timer_again (EV_P_ struct ev_timer *w)	1568	ev_timer_again (EV_P_ ev_timer *w)
1049	{	1569	{
1050	if (ev_is_active (w))	1570	if (ev_is_active (w))
1051	{	1571	{
1052	if (w->repeat)	1572	if (w->repeat)
1053	{	1573	{
1054	w->at = mn_now + w->repeat;	1574	((WT)w)->at = mn_now + w->repeat;
1055	downheap ((WT *)timers, timercnt, w->active - 1);	1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056	}	1576	}
1057	else	1577	else
1058	ev_timer_stop (EV_A_ w);	1578	ev_timer_stop (EV_A_ w);
1059	}	1579	}
1060	else if (w->repeat)	1580	else if (w->repeat)
		1581	{
		1582	w->at = w->repeat;
1061	ev_timer_start (EV_A_ w);	1583	ev_timer_start (EV_A_ w);
		1584	}
1062	}	1585	}
1063		1586
		1587	#if EV_PERIODIC_ENABLE
1064	void	1588	void
1065	ev_periodic_start (EV_P_ struct ev_periodic *w)	1589	ev_periodic_start (EV_P_ ev_periodic *w)
1066	{	1590	{
1067	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1068	return;	1592	return;
1069		1593
		1594	if (w->reschedule_cb)
		1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1596	else if (w->interval)
		1597	{
1070	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072	/* this formula differs from the one in periodic_reify because we do not always round up */	1599	/* this formula differs from the one in periodic_reify because we do not always round up */
1073	if (w->interval)
1074	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1601	}
1075		1602
1076	ev_start (EV_A_ (W)w, ++periodiccnt);	1603	ev_start (EV_A_ (W)w, ++periodiccnt);
1077	array_needsize (periodics, periodicmax, periodiccnt, );	1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1078	periodics [periodiccnt - 1] = w;	1605	periodics [periodiccnt - 1] = w;
1079	upheap ((WT *)periodics, periodiccnt - 1);	1606	upheap ((WT *)periodics, periodiccnt - 1);
1080	}
1081		1607
		1608	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1609	}
		1610
1082	void	1611	void
1083	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1612	ev_periodic_stop (EV_P_ ev_periodic *w)
1084	{	1613	{
1085	ev_clear_pending (EV_A_ (W)w);	1614	ev_clear_pending (EV_A_ (W)w);
1086	if (!ev_is_active (w))	1615	if (expect_false (!ev_is_active (w)))
1087	return;	1616	return;
1088		1617
1089	if (w->active < periodiccnt--)	1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1619
		1620	{
		1621	int active = ((W)w)->active;
		1622
		1623	if (expect_true (--active < --periodiccnt))
1090	{	1624	{
1091	periodics [w->active - 1] = periodics [periodiccnt];	1625	periodics [active] = periodics [periodiccnt];
1092	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1626	adjustheap ((WT *)periodics, periodiccnt, active);
1093	}	1627	}
		1628	}
1094		1629
1095	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1096	}	1631	}
		1632
		1633	void
		1634	ev_periodic_again (EV_P_ ev_periodic *w)
		1635	{
		1636	/* TODO: use adjustheap and recalculation */
		1637	ev_periodic_stop (EV_A_ w);
		1638	ev_periodic_start (EV_A_ w);
		1639	}
		1640	#endif
1097		1641
1098	#ifndef SA_RESTART	1642	#ifndef SA_RESTART
1099	# define SA_RESTART 0	1643	# define SA_RESTART 0
1100	#endif	1644	#endif
1101		1645
1102	void	1646	void
1103	ev_signal_start (EV_P_ struct ev_signal *w)	1647	ev_signal_start (EV_P_ ev_signal *w)
1104	{	1648	{
		1649	#if EV_MULTIPLICITY
		1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1651	#endif
1105	if (ev_is_active (w))	1652	if (expect_false (ev_is_active (w)))
1106	return;	1653	return;
1107		1654
1108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109		1656
1110	ev_start (EV_A_ (W)w, 1);	1657	ev_start (EV_A_ (W)w, 1);
1111	array_needsize (signals, signalmax, w->signum, signals_init);	1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113		1660
1114	if (!w->next)	1661	if (!((WL)w)->next)
1115	{	1662	{
		1663	#if _WIN32
		1664	signal (w->signum, sighandler);
		1665	#else
1116	struct sigaction sa;	1666	struct sigaction sa;
1117	sa.sa_handler = sighandler;	1667	sa.sa_handler = sighandler;
1118	sigfillset (&sa.sa_mask);	1668	sigfillset (&sa.sa_mask);
1119	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1669	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120	sigaction (w->signum, &sa, 0);	1670	sigaction (w->signum, &sa, 0);
		1671	#endif
1121	}	1672	}
1122	}	1673	}
1123		1674
1124	void	1675	void
1125	ev_signal_stop (EV_P_ struct ev_signal *w)	1676	ev_signal_stop (EV_P_ ev_signal *w)
1126	{	1677	{
1127	ev_clear_pending (EV_A_ (W)w);	1678	ev_clear_pending (EV_A_ (W)w);
1128	if (!ev_is_active (w))	1679	if (expect_false (!ev_is_active (w)))
1129	return;	1680	return;
1130		1681
1131	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1132	ev_stop (EV_A_ (W)w);	1683	ev_stop (EV_A_ (W)w);
1133		1684
1134	if (!signals [w->signum - 1].head)	1685	if (!signals [w->signum - 1].head)
1135	signal (w->signum, SIG_DFL);	1686	signal (w->signum, SIG_DFL);
1136	}	1687	}
1137		1688
1138	void	1689	void
		1690	ev_child_start (EV_P_ ev_child *w)
		1691	{
		1692	#if EV_MULTIPLICITY
		1693	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1694	#endif
		1695	if (expect_false (ev_is_active (w)))
		1696	return;
		1697
		1698	ev_start (EV_A_ (W)w, 1);
		1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1700	}
		1701
		1702	void
		1703	ev_child_stop (EV_P_ ev_child *w)
		1704	{
		1705	ev_clear_pending (EV_A_ (W)w);
		1706	if (expect_false (!ev_is_active (w)))
		1707	return;
		1708
		1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1710	ev_stop (EV_A_ (W)w);
		1711	}
		1712
		1713	#if EV_STAT_ENABLE
		1714
		1715	# ifdef _WIN32
		1716	# undef lstat
		1717	# define lstat(a,b) _stati64 (a,b)
		1718	# endif
		1719
		1720	#define DEF_STAT_INTERVAL 5.0074891
		1721	#define MIN_STAT_INTERVAL 0.1074891
		1722
		1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1724
		1725	#if EV_USE_INOTIFY
		1726	# define EV_INOTIFY_BUFSIZE 8192
		1727
		1728	static void noinline
		1729	infy_add (EV_P_ ev_stat *w)
		1730	{
		1731	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1732
		1733	if (w->wd < 0)
		1734	{
		1735	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1736
		1737	/* monitor some parent directory for speedup hints */
		1738	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1739	{
		1740	char path [4096];
		1741	strcpy (path, w->path);
		1742
		1743	do
		1744	{
		1745	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1746	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1747
		1748	char *pend = strrchr (path, '/');
		1749
		1750	if (!pend)
		1751	break; /* whoops, no '/', complain to your admin */
		1752
		1753	*pend = 0;
		1754	w->wd = inotify_add_watch (fs_fd, path, mask);
		1755	}
		1756	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1757	}
		1758	}
		1759	else
		1760	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1761
		1762	if (w->wd >= 0)
		1763	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1764	}
		1765
		1766	static void noinline
		1767	infy_del (EV_P_ ev_stat *w)
		1768	{
		1769	int slot;
		1770	int wd = w->wd;
		1771
		1772	if (wd < 0)
		1773	return;
		1774
		1775	w->wd = -2;
		1776	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1777	wlist_del (&fs_hash [slot].head, (WL)w);
		1778
		1779	/* remove this watcher, if others are watching it, they will rearm */
		1780	inotify_rm_watch (fs_fd, wd);
		1781	}
		1782
		1783	static void noinline
		1784	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1785	{
		1786	if (slot < 0)
		1787	/* overflow, need to check for all hahs slots */
		1788	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1789	infy_wd (EV_A_ slot, wd, ev);
		1790	else
		1791	{
		1792	WL w_;
		1793
		1794	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1795	{
		1796	ev_stat *w = (ev_stat *)w_;
		1797	w_ = w_->next; /* lets us remove this watcher and all before it */
		1798
		1799	if (w->wd == wd || wd == -1)
		1800	{
		1801	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1802	{
		1803	w->wd = -1;
		1804	infy_add (EV_A_ w); /* re-add, no matter what */
		1805	}
		1806
		1807	stat_timer_cb (EV_A_ &w->timer, 0);
		1808	}
		1809	}
		1810	}
		1811	}
		1812
		1813	static void
		1814	infy_cb (EV_P_ ev_io *w, int revents)
		1815	{
		1816	char buf [EV_INOTIFY_BUFSIZE];
		1817	struct inotify_event *ev = (struct inotify_event *)buf;
		1818	int ofs;
		1819	int len = read (fs_fd, buf, sizeof (buf));
		1820
		1821	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1822	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1823	}
		1824
		1825	void inline_size
		1826	infy_init (EV_P)
		1827	{
		1828	if (fs_fd != -2)
		1829	return;
		1830
		1831	fs_fd = inotify_init ();
		1832
		1833	if (fs_fd >= 0)
		1834	{
		1835	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1836	ev_set_priority (&fs_w, EV_MAXPRI);
		1837	ev_io_start (EV_A_ &fs_w);
		1838	}
		1839	}
		1840
		1841	void inline_size
		1842	infy_fork (EV_P)
		1843	{
		1844	int slot;
		1845
		1846	if (fs_fd < 0)
		1847	return;
		1848
		1849	close (fs_fd);
		1850	fs_fd = inotify_init ();
		1851
		1852	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1853	{
		1854	WL w_ = fs_hash [slot].head;
		1855	fs_hash [slot].head = 0;
		1856
		1857	while (w_)
		1858	{
		1859	ev_stat *w = (ev_stat *)w_;
		1860	w_ = w_->next; /* lets us add this watcher */
		1861
		1862	w->wd = -1;
		1863
		1864	if (fs_fd >= 0)
		1865	infy_add (EV_A_ w); /* re-add, no matter what */
		1866	else
		1867	ev_timer_start (EV_A_ &w->timer);
		1868	}
		1869
		1870	}
		1871	}
		1872
		1873	#endif
		1874
		1875	void
		1876	ev_stat_stat (EV_P_ ev_stat *w)
		1877	{
		1878	if (lstat (w->path, &w->attr) < 0)
		1879	w->attr.st_nlink = 0;
		1880	else if (!w->attr.st_nlink)
		1881	w->attr.st_nlink = 1;
		1882	}
		1883
		1884	void noinline
		1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1886	{
		1887	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1888
		1889	/* we copy this here each the time so that */
		1890	/* prev has the old value when the callback gets invoked */
		1891	w->prev = w->attr;
		1892	ev_stat_stat (EV_A_ w);
		1893
		1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1895	{
		1896	#if EV_USE_INOTIFY
		1897	infy_del (EV_A_ w);
		1898	infy_add (EV_A_ w);
		1899	ev_stat_stat (EV_A_ w); /* avoid race... */
		1900	#endif
		1901
		1902	ev_feed_event (EV_A_ w, EV_STAT);
		1903	}
		1904	}
		1905
		1906	void
		1907	ev_stat_start (EV_P_ ev_stat *w)
		1908	{
		1909	if (expect_false (ev_is_active (w)))
		1910	return;
		1911
		1912	/* since we use memcmp, we need to clear any padding data etc. */
		1913	memset (&w->prev, 0, sizeof (ev_statdata));
		1914	memset (&w->attr, 0, sizeof (ev_statdata));
		1915
		1916	ev_stat_stat (EV_A_ w);
		1917
		1918	if (w->interval < MIN_STAT_INTERVAL)
		1919	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1920
		1921	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1922	ev_set_priority (&w->timer, ev_priority (w));
		1923
		1924	#if EV_USE_INOTIFY
		1925	infy_init (EV_A);
		1926
		1927	if (fs_fd >= 0)
		1928	infy_add (EV_A_ w);
		1929	else
		1930	#endif
		1931	ev_timer_start (EV_A_ &w->timer);
		1932
		1933	ev_start (EV_A_ (W)w, 1);
		1934	}
		1935
		1936	void
		1937	ev_stat_stop (EV_P_ ev_stat *w)
		1938	{
		1939	ev_clear_pending (EV_A_ (W)w);
		1940	if (expect_false (!ev_is_active (w)))
		1941	return;
		1942
		1943	#if EV_USE_INOTIFY
		1944	infy_del (EV_A_ w);
		1945	#endif
		1946	ev_timer_stop (EV_A_ &w->timer);
		1947
		1948	ev_stop (EV_A_ (W)w);
		1949	}
		1950	#endif
		1951
		1952	void
1139	ev_idle_start (EV_P_ struct ev_idle *w)	1953	ev_idle_start (EV_P_ ev_idle *w)
1140	{	1954	{
1141	if (ev_is_active (w))	1955	if (expect_false (ev_is_active (w)))
1142	return;	1956	return;
1143		1957
1144	ev_start (EV_A_ (W)w, ++idlecnt);	1958	ev_start (EV_A_ (W)w, ++idlecnt);
1145	array_needsize (idles, idlemax, idlecnt, );	1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1146	idles [idlecnt - 1] = w;	1960	idles [idlecnt - 1] = w;
1147	}	1961	}
1148		1962
1149	void	1963	void
1150	ev_idle_stop (EV_P_ struct ev_idle *w)	1964	ev_idle_stop (EV_P_ ev_idle *w)
1151	{	1965	{
1152	ev_clear_pending (EV_A_ (W)w);	1966	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))	1967	if (expect_false (!ev_is_active (w)))
1154	return;	1968	return;
1155		1969
		1970	{
		1971	int active = ((W)w)->active;
1156	idles [w->active - 1] = idles [--idlecnt];	1972	idles [active - 1] = idles [--idlecnt];
		1973	((W)idles [active - 1])->active = active;
		1974	}
		1975
1157	ev_stop (EV_A_ (W)w);	1976	ev_stop (EV_A_ (W)w);
1158	}	1977	}
1159		1978
1160	void	1979	void
1161	ev_prepare_start (EV_P_ struct ev_prepare *w)	1980	ev_prepare_start (EV_P_ ev_prepare *w)
1162	{	1981	{
1163	if (ev_is_active (w))	1982	if (expect_false (ev_is_active (w)))
1164	return;	1983	return;
1165		1984
1166	ev_start (EV_A_ (W)w, ++preparecnt);	1985	ev_start (EV_A_ (W)w, ++preparecnt);
1167	array_needsize (prepares, preparemax, preparecnt, );	1986	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168	prepares [preparecnt - 1] = w;	1987	prepares [preparecnt - 1] = w;
1169	}	1988	}
1170		1989
1171	void	1990	void
1172	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1991	ev_prepare_stop (EV_P_ ev_prepare *w)
1173	{	1992	{
1174	ev_clear_pending (EV_A_ (W)w);	1993	ev_clear_pending (EV_A_ (W)w);
1175	if (ev_is_active (w))	1994	if (expect_false (!ev_is_active (w)))
1176	return;	1995	return;
1177		1996
		1997	{
		1998	int active = ((W)w)->active;
1178	prepares [w->active - 1] = prepares [--preparecnt];	1999	prepares [active - 1] = prepares [--preparecnt];
		2000	((W)prepares [active - 1])->active = active;
		2001	}
		2002
1179	ev_stop (EV_A_ (W)w);	2003	ev_stop (EV_A_ (W)w);
1180	}	2004	}
1181		2005
1182	void	2006	void
1183	ev_check_start (EV_P_ struct ev_check *w)	2007	ev_check_start (EV_P_ ev_check *w)
1184	{	2008	{
1185	if (ev_is_active (w))	2009	if (expect_false (ev_is_active (w)))
1186	return;	2010	return;
1187		2011
1188	ev_start (EV_A_ (W)w, ++checkcnt);	2012	ev_start (EV_A_ (W)w, ++checkcnt);
1189	array_needsize (checks, checkmax, checkcnt, );	2013	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190	checks [checkcnt - 1] = w;	2014	checks [checkcnt - 1] = w;
1191	}	2015	}
1192		2016
1193	void	2017	void
1194	ev_check_stop (EV_P_ struct ev_check *w)	2018	ev_check_stop (EV_P_ ev_check *w)
1195	{	2019	{
1196	ev_clear_pending (EV_A_ (W)w);	2020	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))	2021	if (expect_false (!ev_is_active (w)))
1198	return;	2022	return;
1199		2023
		2024	{
		2025	int active = ((W)w)->active;
1200	checks [w->active - 1] = checks [--checkcnt];	2026	checks [active - 1] = checks [--checkcnt];
		2027	((W)checks [active - 1])->active = active;
		2028	}
		2029
1201	ev_stop (EV_A_ (W)w);	2030	ev_stop (EV_A_ (W)w);
1202	}	2031	}
1203		2032
1204	void	2033	#if EV_EMBED_ENABLE
1205	ev_child_start (EV_P_ struct ev_child *w)	2034	void noinline
		2035	ev_embed_sweep (EV_P_ ev_embed *w)
1206	{	2036	{
		2037	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2038	}
		2039
		2040	static void
		2041	embed_cb (EV_P_ ev_io *io, int revents)
		2042	{
		2043	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2044
1207	if (ev_is_active (w))	2045	if (ev_cb (w))
		2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2047	else
		2048	ev_embed_sweep (loop, w);
		2049	}
		2050
		2051	void
		2052	ev_embed_start (EV_P_ ev_embed *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
1208	return;	2055	return;
		2056
		2057	{
		2058	struct ev_loop *loop = w->loop;
		2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2061	}
		2062
		2063	ev_set_priority (&w->io, ev_priority (w));
		2064	ev_io_start (EV_A_ &w->io);
1209		2065
1210	ev_start (EV_A_ (W)w, 1);	2066	ev_start (EV_A_ (W)w, 1);
1211	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212	}	2067	}
1213		2068
1214	void	2069	void
1215	ev_child_stop (EV_P_ struct ev_child *w)	2070	ev_embed_stop (EV_P_ ev_embed *w)
1216	{	2071	{
1217	ev_clear_pending (EV_A_ (W)w);	2072	ev_clear_pending (EV_A_ (W)w);
1218	if (ev_is_active (w))	2073	if (expect_false (!ev_is_active (w)))
1219	return;	2074	return;
1220		2075
1221	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2076	ev_io_stop (EV_A_ &w->io);
		2077
1222	ev_stop (EV_A_ (W)w);	2078	ev_stop (EV_A_ (W)w);
1223	}	2079	}
		2080	#endif
		2081
		2082	#if EV_FORK_ENABLE
		2083	void
		2084	ev_fork_start (EV_P_ ev_fork *w)
		2085	{
		2086	if (expect_false (ev_is_active (w)))
		2087	return;
		2088
		2089	ev_start (EV_A_ (W)w, ++forkcnt);
		2090	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2091	forks [forkcnt - 1] = w;
		2092	}
		2093
		2094	void
		2095	ev_fork_stop (EV_P_ ev_fork *w)
		2096	{
		2097	ev_clear_pending (EV_A_ (W)w);
		2098	if (expect_false (!ev_is_active (w)))
		2099	return;
		2100
		2101	{
		2102	int active = ((W)w)->active;
		2103	forks [active - 1] = forks [--forkcnt];
		2104	((W)forks [active - 1])->active = active;
		2105	}
		2106
		2107	ev_stop (EV_A_ (W)w);
		2108	}
		2109	#endif
1224		2110
1225	/*****************************************************************************/	2111	/*****************************************************************************/
1226		2112
1227	struct ev_once	2113	struct ev_once
1228	{	2114	{
1229	struct ev_io io;	2115	ev_io io;
1230	struct ev_timer to;	2116	ev_timer to;
1231	void (*cb)(int revents, void *arg);	2117	void (*cb)(int revents, void *arg);
1232	void *arg;	2118	void *arg;
1233	};	2119	};
1234		2120
1235	static void	2121	static void
…		…
1238	void (*cb)(int revents, void *arg) = once->cb;	2124	void (*cb)(int revents, void *arg) = once->cb;
1239	void *arg = once->arg;	2125	void *arg = once->arg;
1240		2126
1241	ev_io_stop (EV_A_ &once->io);	2127	ev_io_stop (EV_A_ &once->io);
1242	ev_timer_stop (EV_A_ &once->to);	2128	ev_timer_stop (EV_A_ &once->to);
1243	free (once);	2129	ev_free (once);
1244		2130
1245	cb (revents, arg);	2131	cb (revents, arg);
1246	}	2132	}
1247		2133
1248	static void	2134	static void
1249	once_cb_io (EV_P_ struct ev_io *w, int revents)	2135	once_cb_io (EV_P_ ev_io *w, int revents)
1250	{	2136	{
1251	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2137	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1252	}	2138	}
1253		2139
1254	static void	2140	static void
1255	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2141	once_cb_to (EV_P_ ev_timer *w, int revents)
1256	{	2142	{
1257	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2143	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1258	}	2144	}
1259		2145
1260	void	2146	void
1261	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2147	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262	{	2148	{
1263	struct ev_once *once = malloc (sizeof (struct ev_once));	2149	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264		2150
1265	if (!once)	2151	if (expect_false (!once))
		2152	{
1266	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267	else	2154	return;
1268	{	2155	}
		2156
1269	once->cb = cb;	2157	once->cb = cb;
1270	once->arg = arg;	2158	once->arg = arg;
1271		2159
1272	ev_watcher_init (&once->io, once_cb_io);	2160	ev_init (&once->io, once_cb_io);
1273	if (fd >= 0)	2161	if (fd >= 0)
1274	{	2162	{
1275	ev_io_set (&once->io, fd, events);	2163	ev_io_set (&once->io, fd, events);
1276	ev_io_start (EV_A_ &once->io);	2164	ev_io_start (EV_A_ &once->io);
1277	}	2165	}
1278		2166
1279	ev_watcher_init (&once->to, once_cb_to);	2167	ev_init (&once->to, once_cb_to);
1280	if (timeout >= 0.)	2168	if (timeout >= 0.)
1281	{	2169	{
1282	ev_timer_set (&once->to, timeout, 0.);	2170	ev_timer_set (&once->to, timeout, 0.);
1283	ev_timer_start (EV_A_ &once->to);	2171	ev_timer_start (EV_A_ &once->to);
1284	}
1285	}
1286	}
1287
1288	/*****************************************************************************/
1289
1290	#if 0
1291
1292	struct ev_io wio;
1293
1294	static void
1295	sin_cb (struct ev_io *w, int revents)
1296	{
1297	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298	}
1299
1300	static void
1301	ocb (struct ev_timer *w, int revents)
1302	{
1303	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304	ev_timer_stop (w);
1305	ev_timer_start (w);
1306	}
1307
1308	static void
1309	scb (struct ev_signal *w, int revents)
1310	{
1311	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312	ev_io_stop (&wio);
1313	ev_io_start (&wio);
1314	}
1315
1316	static void
1317	gcb (struct ev_signal *w, int revents)
1318	{
1319	fprintf (stderr, "generic %x\n", revents);
1320
1321	}
1322
1323	int main (void)
1324	{
1325	ev_init (0);
1326
1327	ev_io_init (&wio, sin_cb, 0, EV_READ);
1328	ev_io_start (&wio);
1329
1330	struct ev_timer t[10000];
1331
1332	#if 0
1333	int i;
1334	for (i = 0; i < 10000; ++i)
1335	{	2172	}
1336	struct ev_timer *w = t + i;
1337	ev_watcher_init (w, ocb, i);
1338	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339	ev_timer_start (w);
1340	if (drand48 () < 0.5)
1341	ev_timer_stop (w);
1342	}
1343	#endif
1344
1345	struct ev_timer t1;
1346	ev_timer_init (&t1, ocb, 5, 10);
1347	ev_timer_start (&t1);
1348
1349	struct ev_signal sig;
1350	ev_signal_init (&sig, scb, SIGQUIT);
1351	ev_signal_start (&sig);
1352
1353	struct ev_check cw;
1354	ev_check_init (&cw, gcb);
1355	ev_check_start (&cw);
1356
1357	struct ev_idle iw;
1358	ev_idle_init (&iw, gcb);
1359	ev_idle_start (&iw);
1360
1361	ev_loop (0);
1362
1363	return 0;
1364	}	2173	}
1365		2174
		2175	#ifdef __cplusplus
		2176	}
1366	#endif	2177	#endif
1367		2178
1368
1369
1370

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