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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 1.166 by root, Sat Dec 8 03:53:36 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)w)->priority - EV_MINPRI)
113		247
		248	#define EMPTY /* 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, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", 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	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		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	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
195		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
		428
196	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
198	{ \	431	{ \
199	int newcnt = cur; \	432	int ocur_ = (cur); \
200	do \	433	(base) = (type *)array_realloc \
201	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
202	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
203	} \	436	}
204	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
205	\	441	{ \
206	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
207	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
208	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
209	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		450
211	/*****************************************************************************/	451	/*****************************************************************************/
212		452
213	typedef struct	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
214	{	455	{
215	struct ev_watcher_list *head;	456	W w_ = (W)w;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219		457
220	static ANFD *anfds;	458	if (expect_false (w_->pending))
221	static int anfdmax;	459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
222		463
223	static void	464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
224	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
225	{	483	{
226	while (count--)	484	while (count--)
227	{	485	{
228	base->head = 0;	486	base->head = 0;
…		…
231		489
232	++base;	490	++base;
233	}	491	}
234	}	492	}
235		493
236	typedef struct	494	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)	495	fd_event (EV_P_ int fd, int revents)
271	{	496	{
272	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	498	ev_io *w;
274		499
275	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276	{	501	{
277	int ev = w->events & events;	502	int ev = w->events & revents;
278		503
279	if (ev)	504	if (ev)
280	event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
281	}	506	}
282	}	507	}
283		508
284	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
285		514
286	static int *fdchanges;	515	void inline_size
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	516	fd_reify (EV_P)
291	{	517	{
292	int i;	518	int i;
293		519
294	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
295	{	521	{
296	int fd = fdchanges [i];	522	int fd = fdchanges [i];
297	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
298	struct ev_io *w;	524	ev_io *w;
299		525
300	int events = 0;	526	int events = 0;
301		527
302	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303	events |= w->events;	529	events |= w->events;
304		530
		531	#if EV_SELECT_IS_WINSOCKET
		532	if (events)
		533	{
		534	unsigned long argp;
		535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		537	}
		538	#endif
		539
305	anfd->reify = 0;	540	anfd->reify = 0;
306		541
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	543	anfd->events = events;
311	}
312	}	544	}
313		545
314	fdchangecnt = 0;	546	fdchangecnt = 0;
315	}	547	}
316		548
317	static void	549	void inline_size
318	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
319	{	551	{
320	if (anfds [fd].reify || fdchangecnt < 0)	552	if (expect_false (anfds [fd].reify))
321	return;	553	return;
322		554
323	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
324		556
325	++fdchangecnt;	557	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
328	}	560	}
329		561
330	static void	562	void inline_speed
331	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
332	{	564	{
333	struct ev_io *w;	565	ev_io *w;
334		566
335	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
336	{	568	{
337	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	571	}
		572	}
		573
		574	int inline_size
		575	fd_valid (int fd)
		576	{
		577	#ifdef _WIN32
		578	return _get_osfhandle (fd) != -1;
		579	#else
		580	return fcntl (fd, F_GETFD) != -1;
		581	#endif
340	}	582	}
341		583
342	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
343	static void	585	static void noinline
344	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
345	{	587	{
346	int fd;	588	int fd;
347		589
348	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	591	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
352	}	594	}
353		595
354	/* called on ENOMEM in select/poll to kill some fds and retry */	596	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	597	static void noinline
356	fd_enomem (EV_P)	598	fd_enomem (EV_P)
357	{	599	{
358	int fd = anfdmax;	600	int fd;
359		601
360	while (fd--)	602	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	603	if (anfds [fd].events)
362	{	604	{
363	close (fd);
364	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
365	return;	606	return;
366	}	607	}
367	}	608	}
368		609
		610	/* usually called after fork if backend needs to re-arm all fds from scratch */
		611	static void noinline
		612	fd_rearm_all (EV_P)
		613	{
		614	int fd;
		615
		616	for (fd = 0; fd < anfdmax; ++fd)
		617	if (anfds [fd].events)
		618	{
		619	anfds [fd].events = 0;
		620	fd_change (EV_A_ fd);
		621	}
		622	}
		623
369	/*****************************************************************************/	624	/*****************************************************************************/
370		625
371	static struct ev_timer **timers;	626	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)	627	upheap (WT *heap, int k)
379	{	628	{
380	WT w = timers [k];	629	WT w = heap [k];
381		630
382	while (k && timers [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
383	{	632	{
384	timers [k] = timers [k >> 1];	633	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	634	((W)heap [k])->active = k + 1;
386	k >>= 1;	635	k >>= 1;
387	}	636	}
388		637
389	timers [k] = w;	638	heap [k] = w;
390	timers [k]->active = k + 1;	639	((W)heap [k])->active = k + 1;
391		640
392	}	641	}
393		642
394	static void	643	void inline_speed
395	downheap (WT *timers, int N, int k)	644	downheap (WT *heap, int N, int k)
396	{	645	{
397	WT w = timers [k];	646	WT w = heap [k];
398		647
399	while (k < (N >> 1))	648	while (k < (N >> 1))
400	{	649	{
401	int j = k << 1;	650	int j = k << 1;
402		651
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	653	++j;
405		654
406	if (w->at <= timers [j]->at)	655	if (w->at <= heap [j]->at)
407	break;	656	break;
408		657
409	timers [k] = timers [j];	658	heap [k] = heap [j];
410	timers [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
411	k = j;	660	k = j;
412	}	661	}
413		662
414	timers [k] = w;	663	heap [k] = w;
415	timers [k]->active = k + 1;	664	((W)heap [k])->active = k + 1;
		665	}
		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
416	}	672	}
417		673
418	/*****************************************************************************/	674	/*****************************************************************************/
419		675
420	typedef struct	676	typedef struct
421	{	677	{
422	struct ev_watcher_list *head;	678	WL head;
423	sig_atomic_t volatile gotsig;	679	sig_atomic_t volatile gotsig;
424	} ANSIG;	680	} ANSIG;
425		681
426	static ANSIG *signals;	682	static ANSIG *signals;
427	static int signalmax;	683	static int signalmax;
428		684
429	static int sigpipe [2];	685	static int sigpipe [2];
430	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
431	static struct ev_io sigev;	687	static ev_io sigev;
432		688
433	static void	689	void inline_size
434	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
435	{	691	{
436	while (count--)	692	while (count--)
437	{	693	{
438	base->head = 0;	694	base->head = 0;
…		…
443	}	699	}
444		700
445	static void	701	static void
446	sighandler (int signum)	702	sighandler (int signum)
447	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
448	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
449		709
450	if (!gotsig)	710	if (!gotsig)
451	{	711	{
452	int old_errno = errno;	712	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	715	errno = old_errno;
456	}	716	}
457	}	717	}
458		718
		719	void noinline
		720	ev_feed_signal_event (EV_P_ int signum)
		721	{
		722	WL w;
		723
		724	#if EV_MULTIPLICITY
		725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		726	#endif
		727
		728	--signum;
		729
		730	if (signum < 0 || signum >= signalmax)
		731	return;
		732
		733	signals [signum].gotsig = 0;
		734
		735	for (w = signals [signum].head; w; w = w->next)
		736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		737	}
		738
459	static void	739	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
461	{	741	{
462	struct ev_watcher_list *w;
463	int signum;	742	int signum;
464		743
465	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	745	gotsig = 0;
467		746
468	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
		749	ev_feed_signal_event (EV_A_ signum + 1);
		750	}
		751
		752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
		765	siginit (EV_P)
		766	{
		767	fd_intern (sigpipe [0]);
		768	fd_intern (sigpipe [1]);
		769
		770	ev_io_set (&sigev, sigpipe [0], EV_READ);
		771	ev_io_start (EV_A_ &sigev);
		772	ev_unref (EV_A); /* child watcher should not keep loop alive */
		773	}
		774
		775	/*****************************************************************************/
		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
		779	#ifndef _WIN32
		780
		781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
470	{	790	{
471	signals [signum].gotsig = 0;	791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472		792	w->rpid = pid;
473	for (w = signals [signum].head; w; w = w->next)	793	w->rstatus = status;
474	event (EV_A_ (W)w, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
475	}	795	}
476	}	796	}
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		797
513	#ifndef WCONTINUED	798	#ifndef WCONTINUED
514	# define WCONTINUED 0	799	# define WCONTINUED 0
515	#endif	800	#endif
516		801
517	static void	802	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)	803	childcb (EV_P_ ev_signal *sw, int revents)
534	{	804	{
535	int pid, status;	805	int pid, status;
536		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
537	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
539	/* make sure we are called again until all childs have been reaped */	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
540	event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		817
542	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
544	}
545	}	821	}
546		822
547	#endif	823	#endif
548		824
549	/*****************************************************************************/	825	/*****************************************************************************/
550		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
551	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
553	#endif	832	#endif
554	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	834	# include "ev_epoll.c"
556	#endif	835	#endif
557	#if EV_USEV_POLL	836	#if EV_USE_POLL
558	# include "ev_poll.c"	837	# include "ev_poll.c"
559	#endif	838	#endif
560	#if EV_USE_SELECT	839	#if EV_USE_SELECT
561	# include "ev_select.c"	840	# include "ev_select.c"
562	#endif	841	#endif
…		…
572	{	851	{
573	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
574	}	853	}
575		854
576	/* return true if we are running with elevated privileges and should ignore env variables */	855	/* return true if we are running with elevated privileges and should ignore env variables */
577	static int	856	int inline_size
578	enable_secure (void)	857	enable_secure (void)
579	{	858	{
580	#ifdef WIN32	859	#ifdef _WIN32
581	return 0;	860	return 0;
582	#else	861	#else
583	return getuid () != geteuid ()	862	return getuid () != geteuid ()
584	|| getgid () != getegid ();	863	|| getgid () != getegid ();
585	#endif	864	#endif
586	}	865	}
587		866
588	int	867	unsigned int
589	ev_method (EV_P)	868	ev_supported_backends (void)
590	{	869	{
591	return method;	870	unsigned int flags = 0;
592	}
593		871
594	int	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
595	ev_init (EV_P_ int methods)	873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
596	{	883	{
597	if (!method)	884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
598	{	923	{
599	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
600	{	925	{
601	struct timespec ts;	926	struct timespec ts;
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	928	have_monotonic = 1;
604	}	929	}
605	#endif	930	#endif
606		931
607	rt_now = ev_time ();	932	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	933	mn_now = get_clock ();
609	now_floor = mn_now;	934	now_floor = mn_now;
610	diff = rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
611		936
612	if (pipe (sigpipe))	937	/* pid check not overridable via env */
613	return 0;	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
614		942
615	if (methods == EVMETHOD_AUTO)	943	if (!(flags & EVFLAG_NOENV)
616	if (!enable_secure () && getenv ("LIBmethodS"))	944	&& !enable_secure ()
617	methods = atoi (getenv ("LIBmethodS"));	945	&& getenv ("LIBEV_FLAGS"))
618	else	946	flags = atoi (getenv ("LIBEV_FLAGS"));
619	methods = EVMETHOD_ANY;
620		947
621	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
		953	#if EV_USE_INOTIFY
		954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		959	#endif
622	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624	#endif	962	#endif
625	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627	#endif	965	#endif
628	#if EV_USEV_POLL	966	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630	#endif	968	#endif
631	#if EV_USE_SELECT	969	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633	#endif	971	#endif
634		972
635	if (method)	973	ev_init (&sigev, sigcb);
		974	ev_set_priority (&sigev, EV_MAXPRI);
		975	}
		976	}
		977
		978	static void noinline
		979	loop_destroy (EV_P)
		980	{
		981	int i;
		982
		983	#if EV_USE_INOTIFY
		984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		993	#endif
		994	#if EV_USE_KQUEUE
		995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		996	#endif
		997	#if EV_USE_EPOLL
		998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		999	#endif
		1000	#if EV_USE_POLL
		1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1002	#endif
		1003	#if EV_USE_SELECT
		1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1005	#endif
		1006
		1007	for (i = NUMPRI; i--; )
		1008	{
		1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
		1014
		1015	/* have to use the microsoft-never-gets-it-right macro */
		1016	array_free (fdchange, EMPTY);
		1017	array_free (timer, EMPTY);
		1018	#if EV_PERIODIC_ENABLE
		1019	array_free (periodic, EMPTY);
		1020	#endif
		1021	array_free (prepare, EMPTY);
		1022	array_free (check, EMPTY);
		1023
		1024	backend = 0;
		1025	}
		1026
		1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
		1030	loop_fork (EV_P)
		1031	{
		1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
		1038	#if EV_USE_EPOLL
		1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1040	#endif
		1041	#if EV_USE_INOTIFY
		1042	infy_fork (EV_A);
		1043	#endif
		1044
		1045	if (ev_is_active (&sigev))
		1046	{
		1047	/* default loop */
		1048
		1049	ev_ref (EV_A);
		1050	ev_io_stop (EV_A_ &sigev);
		1051	close (sigpipe [0]);
		1052	close (sigpipe [1]);
		1053
		1054	while (pipe (sigpipe))
		1055	syserr ("(libev) error creating pipe");
		1056
		1057	siginit (EV_A);
		1058	}
		1059
		1060	postfork = 0;
		1061	}
		1062
		1063	#if EV_MULTIPLICITY
		1064	struct ev_loop *
		1065	ev_loop_new (unsigned int flags)
		1066	{
		1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1068
		1069	memset (loop, 0, sizeof (struct ev_loop));
		1070
		1071	loop_init (EV_A_ flags);
		1072
		1073	if (ev_backend (EV_A))
		1074	return loop;
		1075
		1076	return 0;
		1077	}
		1078
		1079	void
		1080	ev_loop_destroy (EV_P)
		1081	{
		1082	loop_destroy (EV_A);
		1083	ev_free (loop);
		1084	}
		1085
		1086	void
		1087	ev_loop_fork (EV_P)
		1088	{
		1089	postfork = 1;
		1090	}
		1091
		1092	#endif
		1093
		1094	#if EV_MULTIPLICITY
		1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
		1097	#else
		1098	int
		1099	ev_default_loop (unsigned int flags)
		1100	#endif
		1101	{
		1102	if (sigpipe [0] == sigpipe [1])
		1103	if (pipe (sigpipe))
		1104	return 0;
		1105
		1106	if (!ev_default_loop_ptr)
		1107	{
		1108	#if EV_MULTIPLICITY
		1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1110	#else
		1111	ev_default_loop_ptr = 1;
		1112	#endif
		1113
		1114	loop_init (EV_A_ flags);
		1115
		1116	if (ev_backend (EV_A))
636	{	1117	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	1118	siginit (EV_A);
640		1119
641	#ifndef WIN32	1120	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	1123	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	1125	#endif
647	}	1126	}
		1127	else
		1128	ev_default_loop_ptr = 0;
648	}	1129	}
649		1130
650	return method;	1131	return ev_default_loop_ptr;
		1132	}
		1133
		1134	void
		1135	ev_default_destroy (void)
		1136	{
		1137	#if EV_MULTIPLICITY
		1138	struct ev_loop *loop = ev_default_loop_ptr;
		1139	#endif
		1140
		1141	#ifndef _WIN32
		1142	ev_ref (EV_A); /* child watcher */
		1143	ev_signal_stop (EV_A_ &childev);
		1144	#endif
		1145
		1146	ev_ref (EV_A); /* signal watcher */
		1147	ev_io_stop (EV_A_ &sigev);
		1148
		1149	close (sigpipe [0]); sigpipe [0] = 0;
		1150	close (sigpipe [1]); sigpipe [1] = 0;
		1151
		1152	loop_destroy (EV_A);
		1153	}
		1154
		1155	void
		1156	ev_default_fork (void)
		1157	{
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
		1161
		1162	if (backend)
		1163	postfork = 1;
651	}	1164	}
652		1165
653	/*****************************************************************************/	1166	/*****************************************************************************/
654		1167
655	void	1168	void inline_speed
656	ev_fork_prepare (void)
657	{
658	/* nop */
659	}
660
661	void
662	ev_fork_parent (void)
663	{
664	/* nop */
665	}
666
667	void
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	}
681
682	/*****************************************************************************/
683
684	static void
685	call_pending (EV_P)	1169	call_pending (EV_P)
686	{	1170	{
687	int pri;	1171	int pri;
688		1172
689	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
691	{	1175	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1177
694	if (p->w)	1178	if (expect_true (p->w))
695	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
696	p->w->pending = 0;	1182	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
698	}	1184	}
699	}	1185	}
700	}	1186	}
701		1187
702	static void	1188	void inline_size
703	timers_reify (EV_P)	1189	timers_reify (EV_P)
704	{	1190	{
705	while (timercnt && timers [0]->at <= mn_now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1192	{
707	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
		1194
		1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
708		1196
709	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
710	if (w->repeat)	1198	if (w->repeat)
711	{	1199	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1201
713	w->at = mn_now + w->repeat;	1202	((WT)w)->at += w->repeat;
		1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
714	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
715	}	1207	}
716	else	1208	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1210
719	event ((W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1212	}
721	}	1213	}
722		1214
723	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
724	periodics_reify (EV_P)	1217	periodics_reify (EV_P)
725	{	1218	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1220	{
728	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
		1222
		1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
729		1224
730	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
731	if (w->interval)	1226	if (w->reschedule_cb)
732	{	1227	{
		1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1230	downheap ((WT *)periodics, periodiccnt, 0);
		1231	}
		1232	else if (w->interval)
		1233	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1234	((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));	1235	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);	1236	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1237	}
737	else	1238	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1240
740	event (EV_A_ (W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1242	}
742	}	1243	}
743		1244
744	static void	1245	static void noinline
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1246	periodics_reschedule (EV_P)
746	{	1247	{
747	int i;	1248	int i;
748		1249
749	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
751	{	1252	{
752	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
753		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1257	else if (w->interval)
		1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1259	}
		1260
		1261	/* now rebuild the heap */
		1262	for (i = periodiccnt >> 1; i--; )
		1263	downheap ((WT *)periodics, periodiccnt, i);
		1264	}
		1265	#endif
		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
755	{	1276	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
757		1279
758	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
759	{	1281	{
760	ev_periodic_stop (EV_A_ w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
761	ev_periodic_start (EV_A_ w);	1283	break;
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}	1284	}
765	}	1285	}
766	}	1286	}
767	}	1287	}
		1288	#endif
768		1289
769	inline int	1290	int inline_size
770	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
771	{	1292	{
772	mn_now = get_clock ();	1293	mn_now = get_clock ();
773		1294
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1296	{
776	rt_now = mn_now + diff;	1297	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1298	return 0;
778	}	1299	}
779	else	1300	else
780	{	1301	{
781	now_floor = mn_now;	1302	now_floor = mn_now;
782	rt_now = ev_time ();	1303	ev_rt_now = ev_time ();
783	return 1;	1304	return 1;
784	}	1305	}
785	}	1306	}
786		1307
787	static void	1308	void inline_size
788	time_update (EV_P)	1309	time_update (EV_P)
789	{	1310	{
790	int i;	1311	int i;
791		1312
792	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1314	if (expect_true (have_monotonic))
794	{	1315	{
795	if (time_update_monotonic (EV_A))	1316	if (time_update_monotonic (EV_A))
796	{	1317	{
797	ev_tstamp odiff = diff;	1318	ev_tstamp odiff = rtmn_diff;
798		1319
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
800	{	1329	{
801	diff = rt_now - mn_now;	1330	rtmn_diff = ev_rt_now - mn_now;
802		1331
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1333	return; /* all is well */
805		1334
806	rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1336	mn_now = get_clock ();
808	now_floor = mn_now;	1337	now_floor = mn_now;
809	}	1338	}
810		1339
		1340	# if EV_PERIODIC_ENABLE
811	periodics_reschedule (EV_A_ diff - odiff);	1341	periodics_reschedule (EV_A);
		1342	# endif
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
		1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1345	}
814	}	1346	}
815	else	1347	else
816	#endif	1348	#endif
817	{	1349	{
818	rt_now = ev_time ();	1350	ev_rt_now = ev_time ();
819		1351
820	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1355	periodics_reschedule (EV_A);
		1356	#endif
823		1357
824	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
825	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1361	}
828		1362
829	mn_now = rt_now;	1363	mn_now = ev_rt_now;
830	}	1364	}
831	}	1365	}
832		1366
833	void	1367	void
834	ev_ref (EV_P)	1368	ev_ref (EV_P)
…		…
845	static int loop_done;	1379	static int loop_done;
846		1380
847	void	1381	void
848	ev_loop (EV_P_ int flags)	1382	ev_loop (EV_P_ int flags)
849	{	1383	{
850	double block;
851	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
852		1389
853	do	1390	do
854	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
855	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
856	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
857	{	1413	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1415	call_pending (EV_A);
860	}	1416	}
861		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
		1421	/* we might have forked, so reify kernel state if necessary */
		1422	if (expect_false (postfork))
		1423	loop_fork (EV_A);
		1424
862	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1426	fd_reify (EV_A);
864		1427
865	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
866		1431
867	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
868	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
		1434	else
		1435	{
		1436	/* update time to cancel out callback processing overhead */
869	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1439	time_update_monotonic (EV_A);
872	else	1440	else
873	#endif	1441	#endif
874	{	1442	{
875	rt_now = ev_time ();	1443	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1444	mn_now = ev_rt_now;
877	}	1445	}
878		1446
879	if (flags & EVLOOP_NONBLOCK || idlecnt)
880	block = 0.;
881	else
882	{
883	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
884		1448
885	if (timercnt)	1449	if (timercnt)
886	{	1450	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888	if (block > to) block = to;	1452	if (block > to) block = to;
889	}	1453	}
890		1454
		1455	#if EV_PERIODIC_ENABLE
891	if (periodiccnt)	1456	if (periodiccnt)
892	{	1457	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894	if (block > to) block = to;	1459	if (block > to) block = to;
895	}	1460	}
		1461	#endif
896		1462
897	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
898	}	1464	}
899		1465
		1466	++loop_count;
900	method_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
		1468	}
901		1469
902	/* update rt_now, do magic */	1470	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1471	time_update (EV_A);
904		1472
905	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
907	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
908		1478
		1479	#if EV_IDLE_ENABLE
909	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
910	if (!pendingcnt)	1481	idle_reify (EV_A);
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
912		1483
913	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
914	if (checkcnt)	1485	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1487
917	call_pending (EV_A);	1488	call_pending (EV_A);
		1489
918	}	1490	}
919	while (activecnt && !loop_done);	1491	while (expect_true (activecnt && !loop_done));
920		1492
921	if (loop_done != 2)	1493	if (loop_done == EVUNLOOP_ONE)
922	loop_done = 0;	1494	loop_done = EVUNLOOP_CANCEL;
923	}	1495	}
924		1496
925	void	1497	void
926	ev_unloop (EV_P_ int how)	1498	ev_unloop (EV_P_ int how)
927	{	1499	{
928	loop_done = how;	1500	loop_done = how;
929	}	1501	}
930		1502
931	/*****************************************************************************/	1503	/*****************************************************************************/
932		1504
933	inline void	1505	void inline_size
934	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
935	{	1507	{
936	elem->next = *head;	1508	elem->next = *head;
937	*head = elem;	1509	*head = elem;
938	}	1510	}
939		1511
940	inline void	1512	void inline_size
941	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
942	{	1514	{
943	while (*head)	1515	while (*head)
944	{	1516	{
945	if (*head == elem)	1517	if (*head == elem)
…		…
950		1522
951	head = &(*head)->next;	1523	head = &(*head)->next;
952	}	1524	}
953	}	1525	}
954		1526
955	inline void	1527	void inline_speed
956	ev_clear_pending (EV_P_ W w)	1528	clear_pending (EV_P_ W w)
957	{	1529	{
958	if (w->pending)	1530	if (w->pending)
959	{	1531	{
960	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
961	w->pending = 0;	1533	w->pending = 0;
962	}	1534	}
963	}	1535	}
964		1536
965	inline void	1537	void
		1538	ev_clear_pending (EV_P_ void *w, int invoke)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (pending)
		1544	{
		1545	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1546
		1547	w_->pending = 0;
		1548	p->w = 0;
		1549
		1550	if (invoke)
		1551	EV_CB_INVOKE (w_, p->events);
		1552	}
		1553	}
		1554
		1555	void inline_size
		1556	pri_adjust (EV_P_ W w)
		1557	{
		1558	int pri = w->priority;
		1559	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1560	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1561	w->priority = pri;
		1562	}
		1563
		1564	void inline_speed
966	ev_start (EV_P_ W w, int active)	1565	ev_start (EV_P_ W w, int active)
967	{	1566	{
968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1567	pri_adjust (EV_A_ w);
969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
970
971	w->active = active;	1568	w->active = active;
972	ev_ref (EV_A);	1569	ev_ref (EV_A);
973	}	1570	}
974		1571
975	inline void	1572	void inline_size
976	ev_stop (EV_P_ W w)	1573	ev_stop (EV_P_ W w)
977	{	1574	{
978	ev_unref (EV_A);	1575	ev_unref (EV_A);
979	w->active = 0;	1576	w->active = 0;
980	}	1577	}
981		1578
982	/*****************************************************************************/	1579	/*****************************************************************************/
983		1580
984	void	1581	void
985	ev_io_start (EV_P_ struct ev_io *w)	1582	ev_io_start (EV_P_ ev_io *w)
986	{	1583	{
987	int fd = w->fd;	1584	int fd = w->fd;
988		1585
989	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
990	return;	1587	return;
991		1588
992	assert (("ev_io_start called with negative fd", fd >= 0));	1589	assert (("ev_io_start called with negative fd", fd >= 0));
993		1590
994	ev_start (EV_A_ (W)w, 1);	1591	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1592	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1593	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1594
998	fd_change (EV_A_ fd);	1595	fd_change (EV_A_ fd);
999	}	1596	}
1000		1597
1001	void	1598	void
1002	ev_io_stop (EV_P_ struct ev_io *w)	1599	ev_io_stop (EV_P_ ev_io *w)
1003	{	1600	{
1004	ev_clear_pending (EV_A_ (W)w);	1601	clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1602	if (expect_false (!ev_is_active (w)))
1006	return;	1603	return;
		1604
		1605	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1007		1606
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1607	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1010		1609
1011	fd_change (EV_A_ w->fd);	1610	fd_change (EV_A_ w->fd);
1012	}	1611	}
1013		1612
1014	void	1613	void
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1614	ev_timer_start (EV_P_ ev_timer *w)
1016	{	1615	{
1017	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1018	return;	1617	return;
1019		1618
1020	w->at += mn_now;	1619	((WT)w)->at += mn_now;
1021		1620
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1621	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1622
1024	ev_start (EV_A_ (W)w, ++timercnt);	1623	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1624	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1625	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1626	upheap ((WT *)timers, timercnt - 1);
1028	}
1029		1627
		1628	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1629	}
		1630
1030	void	1631	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1632	ev_timer_stop (EV_P_ ev_timer *w)
1032	{	1633	{
1033	ev_clear_pending (EV_A_ (W)w);	1634	clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1035	return;	1636	return;
1036		1637
1037	if (w->active < timercnt--)	1638	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1639
		1640	{
		1641	int active = ((W)w)->active;
		1642
		1643	if (expect_true (--active < --timercnt))
1038	{	1644	{
1039	timers [w->active - 1] = timers [timercnt];	1645	timers [active] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1646	adjustheap ((WT *)timers, timercnt, active);
1041	}	1647	}
		1648	}
1042		1649
1043	w->at = w->repeat;	1650	((WT)w)->at -= mn_now;
1044		1651
1045	ev_stop (EV_A_ (W)w);	1652	ev_stop (EV_A_ (W)w);
1046	}	1653	}
1047		1654
1048	void	1655	void
1049	ev_timer_again (EV_P_ struct ev_timer *w)	1656	ev_timer_again (EV_P_ ev_timer *w)
1050	{	1657	{
1051	if (ev_is_active (w))	1658	if (ev_is_active (w))
1052	{	1659	{
1053	if (w->repeat)	1660	if (w->repeat)
1054	{	1661	{
1055	w->at = mn_now + w->repeat;	1662	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1663	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1664	}
1058	else	1665	else
1059	ev_timer_stop (EV_A_ w);	1666	ev_timer_stop (EV_A_ w);
1060	}	1667	}
1061	else if (w->repeat)	1668	else if (w->repeat)
		1669	{
		1670	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1671	ev_timer_start (EV_A_ w);
		1672	}
1063	}	1673	}
1064		1674
		1675	#if EV_PERIODIC_ENABLE
1065	void	1676	void
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1677	ev_periodic_start (EV_P_ ev_periodic *w)
1067	{	1678	{
1068	if (ev_is_active (w))	1679	if (expect_false (ev_is_active (w)))
1069	return;	1680	return;
1070		1681
		1682	if (w->reschedule_cb)
		1683	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1684	else if (w->interval)
		1685	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1686	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 */	1687	/* 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;	1688	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1689	}
1076		1690
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1691	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1692	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1693	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1694	upheap ((WT *)periodics, periodiccnt - 1);
1081	}
1082		1695
		1696	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1697	}
		1698
1083	void	1699	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1700	ev_periodic_stop (EV_P_ ev_periodic *w)
1085	{	1701	{
1086	ev_clear_pending (EV_A_ (W)w);	1702	clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1703	if (expect_false (!ev_is_active (w)))
1088	return;	1704	return;
1089		1705
1090	if (w->active < periodiccnt--)	1706	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1707
		1708	{
		1709	int active = ((W)w)->active;
		1710
		1711	if (expect_true (--active < --periodiccnt))
1091	{	1712	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1713	periodics [active] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1714	adjustheap ((WT *)periodics, periodiccnt, active);
1094	}	1715	}
		1716	}
1095		1717
1096	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
1097	}	1719	}
		1720
		1721	void
		1722	ev_periodic_again (EV_P_ ev_periodic *w)
		1723	{
		1724	/* TODO: use adjustheap and recalculation */
		1725	ev_periodic_stop (EV_A_ w);
		1726	ev_periodic_start (EV_A_ w);
		1727	}
		1728	#endif
1098		1729
1099	#ifndef SA_RESTART	1730	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1731	# define SA_RESTART 0
1101	#endif	1732	#endif
1102		1733
1103	void	1734	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1735	ev_signal_start (EV_P_ ev_signal *w)
1105	{	1736	{
		1737	#if EV_MULTIPLICITY
		1738	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1739	#endif
1106	if (ev_is_active (w))	1740	if (expect_false (ev_is_active (w)))
1107	return;	1741	return;
1108		1742
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1743	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1744
1111	ev_start (EV_A_ (W)w, 1);	1745	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1746	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1747	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1748
1115	if (!w->next)	1749	if (!((WL)w)->next)
1116	{	1750	{
		1751	#if _WIN32
		1752	signal (w->signum, sighandler);
		1753	#else
1117	struct sigaction sa;	1754	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1755	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1756	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1757	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1758	sigaction (w->signum, &sa, 0);
		1759	#endif
1122	}	1760	}
1123	}	1761	}
1124		1762
1125	void	1763	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1764	ev_signal_stop (EV_P_ ev_signal *w)
1127	{	1765	{
1128	ev_clear_pending (EV_A_ (W)w);	1766	clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1767	if (expect_false (!ev_is_active (w)))
1130	return;	1768	return;
1131		1769
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1770	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1771	ev_stop (EV_A_ (W)w);
1134		1772
1135	if (!signals [w->signum - 1].head)	1773	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1774	signal (w->signum, SIG_DFL);
1137	}	1775	}
1138		1776
1139	void	1777	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)	1778	ev_child_start (EV_P_ ev_child *w)
1141	{	1779	{
		1780	#if EV_MULTIPLICITY
		1781	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1782	#endif
1142	if (ev_is_active (w))	1783	if (expect_false (ev_is_active (w)))
1143	return;	1784	return;
1144		1785
1145	ev_start (EV_A_ (W)w, ++idlecnt);	1786	ev_start (EV_A_ (W)w, 1);
1146	array_needsize (idles, idlemax, idlecnt, );	1787	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147	idles [idlecnt - 1] = w;
1148	}	1788	}
1149		1789
1150	void	1790	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)	1791	ev_child_stop (EV_P_ ev_child *w)
1152	{	1792	{
1153	ev_clear_pending (EV_A_ (W)w);	1793	clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))	1794	if (expect_false (!ev_is_active (w)))
1155	return;	1795	return;
1156		1796
1157	idles [w->active - 1] = idles [--idlecnt];	1797	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop (EV_A_ (W)w);	1798	ev_stop (EV_A_ (W)w);
1159	}	1799	}
1160		1800
		1801	#if EV_STAT_ENABLE
		1802
		1803	# ifdef _WIN32
		1804	# undef lstat
		1805	# define lstat(a,b) _stati64 (a,b)
		1806	# endif
		1807
		1808	#define DEF_STAT_INTERVAL 5.0074891
		1809	#define MIN_STAT_INTERVAL 0.1074891
		1810
		1811	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1812
		1813	#if EV_USE_INOTIFY
		1814	# define EV_INOTIFY_BUFSIZE 8192
		1815
		1816	static void noinline
		1817	infy_add (EV_P_ ev_stat *w)
		1818	{
		1819	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);
		1820
		1821	if (w->wd < 0)
		1822	{
		1823	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1824
		1825	/* monitor some parent directory for speedup hints */
		1826	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1827	{
		1828	char path [4096];
		1829	strcpy (path, w->path);
		1830
		1831	do
		1832	{
		1833	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1834	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1835
		1836	char *pend = strrchr (path, '/');
		1837
		1838	if (!pend)
		1839	break; /* whoops, no '/', complain to your admin */
		1840
		1841	*pend = 0;
		1842	w->wd = inotify_add_watch (fs_fd, path, mask);
		1843	}
		1844	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1845	}
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1849
		1850	if (w->wd >= 0)
		1851	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1852	}
		1853
		1854	static void noinline
		1855	infy_del (EV_P_ ev_stat *w)
		1856	{
		1857	int slot;
		1858	int wd = w->wd;
		1859
		1860	if (wd < 0)
		1861	return;
		1862
		1863	w->wd = -2;
		1864	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1865	wlist_del (&fs_hash [slot].head, (WL)w);
		1866
		1867	/* remove this watcher, if others are watching it, they will rearm */
		1868	inotify_rm_watch (fs_fd, wd);
		1869	}
		1870
		1871	static void noinline
		1872	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1873	{
		1874	if (slot < 0)
		1875	/* overflow, need to check for all hahs slots */
		1876	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1877	infy_wd (EV_A_ slot, wd, ev);
		1878	else
		1879	{
		1880	WL w_;
		1881
		1882	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us remove this watcher and all before it */
		1886
		1887	if (w->wd == wd || wd == -1)
		1888	{
		1889	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1890	{
		1891	w->wd = -1;
		1892	infy_add (EV_A_ w); /* re-add, no matter what */
		1893	}
		1894
		1895	stat_timer_cb (EV_A_ &w->timer, 0);
		1896	}
		1897	}
		1898	}
		1899	}
		1900
		1901	static void
		1902	infy_cb (EV_P_ ev_io *w, int revents)
		1903	{
		1904	char buf [EV_INOTIFY_BUFSIZE];
		1905	struct inotify_event *ev = (struct inotify_event *)buf;
		1906	int ofs;
		1907	int len = read (fs_fd, buf, sizeof (buf));
		1908
		1909	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1910	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1911	}
		1912
		1913	void inline_size
		1914	infy_init (EV_P)
		1915	{
		1916	if (fs_fd != -2)
		1917	return;
		1918
		1919	fs_fd = inotify_init ();
		1920
		1921	if (fs_fd >= 0)
		1922	{
		1923	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1924	ev_set_priority (&fs_w, EV_MAXPRI);
		1925	ev_io_start (EV_A_ &fs_w);
		1926	}
		1927	}
		1928
		1929	void inline_size
		1930	infy_fork (EV_P)
		1931	{
		1932	int slot;
		1933
		1934	if (fs_fd < 0)
		1935	return;
		1936
		1937	close (fs_fd);
		1938	fs_fd = inotify_init ();
		1939
		1940	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1941	{
		1942	WL w_ = fs_hash [slot].head;
		1943	fs_hash [slot].head = 0;
		1944
		1945	while (w_)
		1946	{
		1947	ev_stat *w = (ev_stat *)w_;
		1948	w_ = w_->next; /* lets us add this watcher */
		1949
		1950	w->wd = -1;
		1951
		1952	if (fs_fd >= 0)
		1953	infy_add (EV_A_ w); /* re-add, no matter what */
		1954	else
		1955	ev_timer_start (EV_A_ &w->timer);
		1956	}
		1957
		1958	}
		1959	}
		1960
		1961	#endif
		1962
1161	void	1963	void
		1964	ev_stat_stat (EV_P_ ev_stat *w)
		1965	{
		1966	if (lstat (w->path, &w->attr) < 0)
		1967	w->attr.st_nlink = 0;
		1968	else if (!w->attr.st_nlink)
		1969	w->attr.st_nlink = 1;
		1970	}
		1971
		1972	static void noinline
		1973	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1974	{
		1975	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1976
		1977	/* we copy this here each the time so that */
		1978	/* prev has the old value when the callback gets invoked */
		1979	w->prev = w->attr;
		1980	ev_stat_stat (EV_A_ w);
		1981
		1982	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1983	if (
		1984	w->prev.st_dev != w->attr.st_dev
		1985	|| w->prev.st_ino != w->attr.st_ino
		1986	|| w->prev.st_mode != w->attr.st_mode
		1987	|| w->prev.st_nlink != w->attr.st_nlink
		1988	|| w->prev.st_uid != w->attr.st_uid
		1989	|| w->prev.st_gid != w->attr.st_gid
		1990	|| w->prev.st_rdev != w->attr.st_rdev
		1991	|| w->prev.st_size != w->attr.st_size
		1992	|| w->prev.st_atime != w->attr.st_atime
		1993	|| w->prev.st_mtime != w->attr.st_mtime
		1994	|| w->prev.st_ctime != w->attr.st_ctime
		1995	) {
		1996	#if EV_USE_INOTIFY
		1997	infy_del (EV_A_ w);
		1998	infy_add (EV_A_ w);
		1999	ev_stat_stat (EV_A_ w); /* avoid race... */
		2000	#endif
		2001
		2002	ev_feed_event (EV_A_ w, EV_STAT);
		2003	}
		2004	}
		2005
		2006	void
		2007	ev_stat_start (EV_P_ ev_stat *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	/* since we use memcmp, we need to clear any padding data etc. */
		2013	memset (&w->prev, 0, sizeof (ev_statdata));
		2014	memset (&w->attr, 0, sizeof (ev_statdata));
		2015
		2016	ev_stat_stat (EV_A_ w);
		2017
		2018	if (w->interval < MIN_STAT_INTERVAL)
		2019	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2020
		2021	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2022	ev_set_priority (&w->timer, ev_priority (w));
		2023
		2024	#if EV_USE_INOTIFY
		2025	infy_init (EV_A);
		2026
		2027	if (fs_fd >= 0)
		2028	infy_add (EV_A_ w);
		2029	else
		2030	#endif
		2031	ev_timer_start (EV_A_ &w->timer);
		2032
		2033	ev_start (EV_A_ (W)w, 1);
		2034	}
		2035
		2036	void
		2037	ev_stat_stop (EV_P_ ev_stat *w)
		2038	{
		2039	clear_pending (EV_A_ (W)w);
		2040	if (expect_false (!ev_is_active (w)))
		2041	return;
		2042
		2043	#if EV_USE_INOTIFY
		2044	infy_del (EV_A_ w);
		2045	#endif
		2046	ev_timer_stop (EV_A_ &w->timer);
		2047
		2048	ev_stop (EV_A_ (W)w);
		2049	}
		2050	#endif
		2051
		2052	#if EV_IDLE_ENABLE
		2053	void
		2054	ev_idle_start (EV_P_ ev_idle *w)
		2055	{
		2056	if (expect_false (ev_is_active (w)))
		2057	return;
		2058
		2059	pri_adjust (EV_A_ (W)w);
		2060
		2061	{
		2062	int active = ++idlecnt [ABSPRI (w)];
		2063
		2064	++idleall;
		2065	ev_start (EV_A_ (W)w, active);
		2066
		2067	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2068	idles [ABSPRI (w)][active - 1] = w;
		2069	}
		2070	}
		2071
		2072	void
		2073	ev_idle_stop (EV_P_ ev_idle *w)
		2074	{
		2075	clear_pending (EV_A_ (W)w);
		2076	if (expect_false (!ev_is_active (w)))
		2077	return;
		2078
		2079	{
		2080	int active = ((W)w)->active;
		2081
		2082	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2083	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2084
		2085	ev_stop (EV_A_ (W)w);
		2086	--idleall;
		2087	}
		2088	}
		2089	#endif
		2090
		2091	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)	2092	ev_prepare_start (EV_P_ ev_prepare *w)
1163	{	2093	{
1164	if (ev_is_active (w))	2094	if (expect_false (ev_is_active (w)))
1165	return;	2095	return;
1166		2096
1167	ev_start (EV_A_ (W)w, ++preparecnt);	2097	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );	2098	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1169	prepares [preparecnt - 1] = w;	2099	prepares [preparecnt - 1] = w;
1170	}	2100	}
1171		2101
1172	void	2102	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2103	ev_prepare_stop (EV_P_ ev_prepare *w)
1174	{	2104	{
1175	ev_clear_pending (EV_A_ (W)w);	2105	clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))	2106	if (expect_false (!ev_is_active (w)))
1177	return;	2107	return;
1178		2108
		2109	{
		2110	int active = ((W)w)->active;
1179	prepares [w->active - 1] = prepares [--preparecnt];	2111	prepares [active - 1] = prepares [--preparecnt];
		2112	((W)prepares [active - 1])->active = active;
		2113	}
		2114
1180	ev_stop (EV_A_ (W)w);	2115	ev_stop (EV_A_ (W)w);
1181	}	2116	}
1182		2117
1183	void	2118	void
1184	ev_check_start (EV_P_ struct ev_check *w)	2119	ev_check_start (EV_P_ ev_check *w)
1185	{	2120	{
1186	if (ev_is_active (w))	2121	if (expect_false (ev_is_active (w)))
1187	return;	2122	return;
1188		2123
1189	ev_start (EV_A_ (W)w, ++checkcnt);	2124	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );	2125	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1191	checks [checkcnt - 1] = w;	2126	checks [checkcnt - 1] = w;
1192	}	2127	}
1193		2128
1194	void	2129	void
1195	ev_check_stop (EV_P_ struct ev_check *w)	2130	ev_check_stop (EV_P_ ev_check *w)
1196	{	2131	{
1197	ev_clear_pending (EV_A_ (W)w);	2132	clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))	2133	if (expect_false (!ev_is_active (w)))
1199	return;	2134	return;
1200		2135
		2136	{
		2137	int active = ((W)w)->active;
1201	checks [w->active - 1] = checks [--checkcnt];	2138	checks [active - 1] = checks [--checkcnt];
		2139	((W)checks [active - 1])->active = active;
		2140	}
		2141
1202	ev_stop (EV_A_ (W)w);	2142	ev_stop (EV_A_ (W)w);
1203	}	2143	}
1204		2144
1205	void	2145	#if EV_EMBED_ENABLE
1206	ev_child_start (EV_P_ struct ev_child *w)	2146	void noinline
		2147	ev_embed_sweep (EV_P_ ev_embed *w)
1207	{	2148	{
		2149	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2150	}
		2151
		2152	static void
		2153	embed_cb (EV_P_ ev_io *io, int revents)
		2154	{
		2155	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2156
1208	if (ev_is_active (w))	2157	if (ev_cb (w))
		2158	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2159	else
		2160	ev_embed_sweep (loop, w);
		2161	}
		2162
		2163	void
		2164	ev_embed_start (EV_P_ ev_embed *w)
		2165	{
		2166	if (expect_false (ev_is_active (w)))
1209	return;	2167	return;
		2168
		2169	{
		2170	struct ev_loop *loop = w->loop;
		2171	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2172	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2173	}
		2174
		2175	ev_set_priority (&w->io, ev_priority (w));
		2176	ev_io_start (EV_A_ &w->io);
1210		2177
1211	ev_start (EV_A_ (W)w, 1);	2178	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	2179	}
1214		2180
1215	void	2181	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	2182	ev_embed_stop (EV_P_ ev_embed *w)
1217	{	2183	{
1218	ev_clear_pending (EV_A_ (W)w);	2184	clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	2185	if (expect_false (!ev_is_active (w)))
1220	return;	2186	return;
1221		2187
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2188	ev_io_stop (EV_A_ &w->io);
		2189
1223	ev_stop (EV_A_ (W)w);	2190	ev_stop (EV_A_ (W)w);
1224	}	2191	}
		2192	#endif
		2193
		2194	#if EV_FORK_ENABLE
		2195	void
		2196	ev_fork_start (EV_P_ ev_fork *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	ev_start (EV_A_ (W)w, ++forkcnt);
		2202	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2203	forks [forkcnt - 1] = w;
		2204	}
		2205
		2206	void
		2207	ev_fork_stop (EV_P_ ev_fork *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	{
		2214	int active = ((W)w)->active;
		2215	forks [active - 1] = forks [--forkcnt];
		2216	((W)forks [active - 1])->active = active;
		2217	}
		2218
		2219	ev_stop (EV_A_ (W)w);
		2220	}
		2221	#endif
1225		2222
1226	/*****************************************************************************/	2223	/*****************************************************************************/
1227		2224
1228	struct ev_once	2225	struct ev_once
1229	{	2226	{
1230	struct ev_io io;	2227	ev_io io;
1231	struct ev_timer to;	2228	ev_timer to;
1232	void (*cb)(int revents, void *arg);	2229	void (*cb)(int revents, void *arg);
1233	void *arg;	2230	void *arg;
1234	};	2231	};
1235		2232
1236	static void	2233	static void
…		…
1239	void (*cb)(int revents, void *arg) = once->cb;	2236	void (*cb)(int revents, void *arg) = once->cb;
1240	void *arg = once->arg;	2237	void *arg = once->arg;
1241		2238
1242	ev_io_stop (EV_A_ &once->io);	2239	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	2240	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	2241	ev_free (once);
1245		2242
1246	cb (revents, arg);	2243	cb (revents, arg);
1247	}	2244	}
1248		2245
1249	static void	2246	static void
1250	once_cb_io (EV_P_ struct ev_io *w, int revents)	2247	once_cb_io (EV_P_ ev_io *w, int revents)
1251	{	2248	{
1252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2249	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1253	}	2250	}
1254		2251
1255	static void	2252	static void
1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2253	once_cb_to (EV_P_ ev_timer *w, int revents)
1257	{	2254	{
1258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1259	}	2256	}
1260		2257
1261	void	2258	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2259	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263	{	2260	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	2261	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265		2262
1266	if (!once)	2263	if (expect_false (!once))
		2264	{
1267	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2265	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268	else	2266	return;
1269	{	2267	}
		2268
1270	once->cb = cb;	2269	once->cb = cb;
1271	once->arg = arg;	2270	once->arg = arg;
1272		2271
1273	ev_watcher_init (&once->io, once_cb_io);	2272	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	2273	if (fd >= 0)
1275	{	2274	{
1276	ev_io_set (&once->io, fd, events);	2275	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	2276	ev_io_start (EV_A_ &once->io);
1278	}	2277	}
1279		2278
1280	ev_watcher_init (&once->to, once_cb_to);	2279	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	2280	if (timeout >= 0.)
1282	{	2281	{
1283	ev_timer_set (&once->to, timeout, 0.);	2282	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	2283	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	{	2284	}
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	}	2285	}
1366		2286
		2287	#ifdef __cplusplus
		2288	}
1367	#endif	2289	#endif
1368		2290
1369
1370
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