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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		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
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# 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
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# define EV_USE_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
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
		216	#if EV_SELECT_IS_WINSOCKET
		217	# include <winsock.h>
		218	#endif
		219
124	/**/	220	/**/
125		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130		235
131	#include "ev.h"
132
133	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
134	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
135	# define inline inline	238	# define noinline __attribute__ ((noinline))
136	#else	239	#else
137	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
138	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
139	#endif	245	#endif
140		246
141	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
143		256
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
147	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
150		266
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		268
153	#if WIN32	269	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	270	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	271	#endif
211		272
212	/*****************************************************************************/	273	/*****************************************************************************/
213		274
214	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
215		276
		277	void
216	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
217	{	279	{
218	syserr_cb = cb;	280	syserr_cb = cb;
219	}	281	}
220		282
221	static void	283	static void noinline
222	syserr (const char *msg)	284	syserr (const char *msg)
223	{	285	{
224	if (!msg)	286	if (!msg)
225	msg = "(libev) system error";	287	msg = "(libev) system error";
226		288
…		…
233	}	295	}
234	}	296	}
235		297
236	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
237		299
		300	void
238	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
239	{	302	{
240	alloc = cb;	303	alloc = cb;
241	}	304	}
242		305
243	static void *	306	inline_speed void *
244	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
245	{	308	{
246	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
247		310
248	if (!ptr && size)	311	if (!ptr && size)
…		…
262	typedef struct	325	typedef struct
263	{	326	{
264	WL head;	327	WL head;
265	unsigned char events;	328	unsigned char events;
266	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
267	} ANFD;	333	} ANFD;
268		334
269	typedef struct	335	typedef struct
270	{	336	{
271	W w;	337	W w;
272	int events;	338	int events;
273	} ANPENDING;	339	} ANPENDING;
274		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
275	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
276		349
277	struct ev_loop	350	struct ev_loop
278	{	351	{
		352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	355	#include "ev_vars.h"
281	};
282	# undef VAR	356	#undef VAR
		357	};
283	# include "ev_wrap.h"	358	#include "ev_wrap.h"
		359
		360	static struct ev_loop default_loop_struct;
		361	struct ev_loop *ev_default_loop_ptr;
284		362
285	#else	363	#else
286		364
		365	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	367	#include "ev_vars.h"
289	# undef VAR	368	#undef VAR
		369
		370	static int ev_default_loop_ptr;
290		371
291	#endif	372	#endif
292		373
293	/*****************************************************************************/	374	/*****************************************************************************/
294		375
295	inline ev_tstamp	376	ev_tstamp
296	ev_time (void)	377	ev_time (void)
297	{	378	{
298	#if EV_USE_REALTIME	379	#if EV_USE_REALTIME
299	struct timespec ts;	380	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	381	clock_gettime (CLOCK_REALTIME, &ts);
…		…
304	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
305	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
306	#endif	387	#endif
307	}	388	}
308		389
309	inline ev_tstamp	390	ev_tstamp inline_size
310	get_clock (void)	391	get_clock (void)
311	{	392	{
312	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
313	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
314	{	395	{
…		…
319	#endif	400	#endif
320		401
321	return ev_time ();	402	return ev_time ();
322	}	403	}
323		404
		405	#if EV_MULTIPLICITY
324	ev_tstamp	406	ev_tstamp
325	ev_now (EV_P)	407	ev_now (EV_P)
326	{	408	{
327	return rt_now;	409	return ev_rt_now;
328	}	410	}
		411	#endif
329		412
330	#define array_roundsize(base,n) ((n) | 4 & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
331		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
		440
332	#define array_needsize(base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
334	{ \	443	{ \
335	int newcnt = cur; \	444	int ocur_ = (cur); \
336	do \	445	(base) = (type *)array_realloc \
337	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
338	newcnt = array_roundsize (base, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
339	} \
340	while ((cnt) > newcnt); \
341	\
342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
343	init (base + cur, newcnt - cur); \
344	cur = newcnt; \
345	}	448	}
346		449
		450	#if 0
347	#define array_slim(stem) \	451	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	453	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353	}	457	}
354		458	#endif
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		459
360	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
362		462
363	/*****************************************************************************/	463	/*****************************************************************************/
364		464
365	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
366	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
367	{	495	{
368	while (count--)	496	while (count--)
369	{	497	{
370	base->head = 0;	498	base->head = 0;
…		…
373		501
374	++base;	502	++base;
375	}	503	}
376	}	504	}
377		505
378	static void	506	void inline_speed
379	event (EV_P_ W w, int events)
380	{
381	if (w->pending)
382	{
383	pendings [ABSPRI (w)][w->pending - 1].events |= events;
384	return;
385	}
386
387	w->pending = ++pendingcnt [ABSPRI (w)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389	pendings [ABSPRI (w)][w->pending - 1].w = w;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;
391	}
392
393	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{
396	int i;
397
398	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);
400	}
401
402	static void
403	fd_event (EV_P_ int fd, int events)	507	fd_event (EV_P_ int fd, int revents)
404	{	508	{
405	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	510	ev_io *w;
407		511
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	{	513	{
410	int ev = w->events & events;	514	int ev = w->events & revents;
411		515
412	if (ev)	516	if (ev)
413	event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
414	}	518	}
415	}	519	}
416		520
417	/*****************************************************************************/	521	void
		522	ev_feed_fd_event (EV_P_ int fd, int revents)
		523	{
		524	if (fd >= 0 && fd < anfdmax)
		525	fd_event (EV_A_ fd, revents);
		526	}
418		527
419	static void	528	void inline_size
420	fd_reify (EV_P)	529	fd_reify (EV_P)
421	{	530	{
422	int i;	531	int i;
423		532
424	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
425	{	534	{
426	int fd = fdchanges [i];	535	int fd = fdchanges [i];
427	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
428	struct ev_io *w;	537	ev_io *w;
429		538
430	int events = 0;	539	unsigned char events = 0;
431		540
432	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
433	events |= w->events;	542	events |= (unsigned char)w->events;
434		543
		544	#if EV_SELECT_IS_WINSOCKET
		545	if (events)
		546	{
		547	unsigned long argp;
		548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		550	}
		551	#endif
		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
435	anfd->reify = 0;	557	anfd->reify = 0;
436
437	method_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
439	}	563	}
440		564
441	fdchangecnt = 0;	565	fdchangecnt = 0;
442	}	566	}
443		567
444	static void	568	void inline_size
445	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
446	{	570	{
447	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
448	return;
449
450	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
451		573
		574	if (expect_true (!reify))
		575	{
452	++fdchangecnt;	576	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
455	}	580	}
456		581
457	static void	582	void inline_speed
458	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
459	{	584	{
460	struct ev_io *w;	585	ev_io *w;
461		586
462	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
463	{	588	{
464	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
465	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
466	}	591	}
467	}	592	}
468		593
469	static int	594	int inline_size
470	fd_valid (int fd)	595	fd_valid (int fd)
471	{	596	{
472	#ifdef WIN32	597	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	598	return _get_osfhandle (fd) != -1;
474	#else	599	#else
475	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
476	#endif	601	#endif
477	}	602	}
478		603
479	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
480	static void	605	static void noinline
481	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
482	{	607	{
483	int fd;	608	int fd;
484		609
485	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
487	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
488	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
489	}	614	}
490		615
491	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
492	static void	617	static void noinline
493	fd_enomem (EV_P)	618	fd_enomem (EV_P)
494	{	619	{
495	int fd;	620	int fd;
496		621
497	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
500	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
501	return;	626	return;
502	}	627	}
503	}	628	}
504		629
505	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
506	static void	631	static void noinline
507	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
508	{	633	{
509	int fd;	634	int fd;
510		635
511	/* this should be highly optimised to not do anything but set a flag */
512	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
513	if (anfds [fd].events)	637	if (anfds [fd].events)
514	{	638	{
515	anfds [fd].events = 0;	639	anfds [fd].events = 0;
516	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
517	}	641	}
518	}	642	}
519		643
520	/*****************************************************************************/	644	/*****************************************************************************/
521		645
522	static void	646	void inline_speed
523	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
524	{	648	{
525	WT w = heap [k];	649	WT w = heap [k];
526		650
527	while (k && heap [k >> 1]->at > w->at)	651	while (k)
528	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
529	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
530	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
531	k >>= 1;	660	k = p;
532	}	661	}
533		662
534	heap [k] = w;	663	heap [k] = w;
535	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
536
537	}	665	}
538		666
539	static void	667	void inline_speed
540	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
541	{	669	{
542	WT w = heap [k];	670	WT w = heap [k];
543		671
544	while (k < (N >> 1))	672	for (;;)
545	{	673	{
546	int j = k << 1;	674	int c = (k << 1) + 1;
547		675
548	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
549	++j;
550
551	if (w->at <= heap [j]->at)
552	break;	677	break;
553		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
554	heap [k] = heap [j];	685	heap [k] = heap [c];
555	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
556	k = j;	688	k = c;
557	}	689	}
558		690
559	heap [k] = w;	691	heap [k] = w;
560	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
		693	}
		694
		695	void inline_size
		696	adjustheap (WT *heap, int N, int k)
		697	{
		698	upheap (heap, k);
		699	downheap (heap, N, k);
561	}	700	}
562		701
563	/*****************************************************************************/	702	/*****************************************************************************/
564		703
565	typedef struct	704	typedef struct
…		…
571	static ANSIG *signals;	710	static ANSIG *signals;
572	static int signalmax;	711	static int signalmax;
573		712
574	static int sigpipe [2];	713	static int sigpipe [2];
575	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
576	static struct ev_io sigev;	715	static ev_io sigev;
577		716
578	static void	717	void inline_size
579	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
580	{	719	{
581	while (count--)	720	while (count--)
582	{	721	{
583	base->head = 0;	722	base->head = 0;
…		…
588	}	727	}
589		728
590	static void	729	static void
591	sighandler (int signum)	730	sighandler (int signum)
592	{	731	{
593	#if WIN32	732	#if _WIN32
594	signal (signum, sighandler);	733	signal (signum, sighandler);
595	#endif	734	#endif
596		735
597	signals [signum - 1].gotsig = 1;	736	signals [signum - 1].gotsig = 1;
598		737
…		…
603	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	743	errno = old_errno;
605	}	744	}
606	}	745	}
607		746
		747	void noinline
		748	ev_feed_signal_event (EV_P_ int signum)
		749	{
		750	WL w;
		751
		752	#if EV_MULTIPLICITY
		753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		754	#endif
		755
		756	--signum;
		757
		758	if (signum < 0 || signum >= signalmax)
		759	return;
		760
		761	signals [signum].gotsig = 0;
		762
		763	for (w = signals [signum].head; w; w = w->next)
		764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		765	}
		766
608	static void	767	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
610	{	769	{
611	WL w;
612	int signum;	770	int signum;
613		771
614	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	773	gotsig = 0;
616		774
617	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
619	{	777	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;
621
622	for (w = signals [signum].head; w; w = w->next)
623	event (EV_A_ (W)w, EV_SIGNAL);
624	}
625	}	778	}
626		779
627	static void	780	void inline_speed
		781	fd_intern (int fd)
		782	{
		783	#ifdef _WIN32
		784	int arg = 1;
		785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		786	#else
		787	fcntl (fd, F_SETFD, FD_CLOEXEC);
		788	fcntl (fd, F_SETFL, O_NONBLOCK);
		789	#endif
		790	}
		791
		792	static void noinline
628	siginit (EV_P)	793	siginit (EV_P)
629	{	794	{
630	#ifndef WIN32	795	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	796	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		797
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	798	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	799	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	801	}
643		802
644	/*****************************************************************************/	803	/*****************************************************************************/
645		804
646	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
647		806
648	#ifndef WIN32	807	#ifndef _WIN32
649		808
650	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
651		825
652	#ifndef WCONTINUED	826	#ifndef WCONTINUED
653	# define WCONTINUED 0	827	# define WCONTINUED 0
654	#endif	828	#endif
655		829
656	static void	830	static void
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
658	{
659	struct ev_child *w;
660
661	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
662	if (w->pid == pid || !w->pid)
663	{
664	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665	w->rpid = pid;
666	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);
668	}
669	}
670
671	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
673	{	832	{
674	int pid, status;	833	int pid, status;
675		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
678	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		845
681	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}
684	}	849	}
685		850
686	#endif	851	#endif
687		852
688	/*****************************************************************************/	853	/*****************************************************************************/
689		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
690	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
692	#endif	860	#endif
693	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	862	# include "ev_epoll.c"
…		…
711	{	879	{
712	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
713	}	881	}
714		882
715	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	884	int inline_size
717	enable_secure (void)	885	enable_secure (void)
718	{	886	{
719	#ifdef WIN32	887	#ifdef _WIN32
720	return 0;	888	return 0;
721	#else	889	#else
722	return getuid () != geteuid ()	890	return getuid () != geteuid ()
723	|| getgid () != getegid ();	891	|| getgid () != getegid ();
724	#endif	892	#endif
725	}	893	}
726		894
727	int	895	unsigned int
728	ev_method (EV_P)	896	ev_supported_backends (void)
729	{	897	{
730	return method;	898	unsigned int flags = 0;
731	}
732		899
733	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734	loop_init (EV_P_ int methods)	901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
735	{	911	{
736	if (!method)	912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
		948	loop_init (EV_P_ unsigned int flags)
		949	{
		950	if (!backend)
737	{	951	{
738	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
739	{	953	{
740	struct timespec ts;	954	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	956	have_monotonic = 1;
743	}	957	}
744	#endif	958	#endif
745		959
746	rt_now = ev_time ();	960	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	961	mn_now = get_clock ();
748	now_floor = mn_now;	962	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
750		964
751	if (methods == EVMETHOD_AUTO)	965	/* pid check not overridable via env */
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		975
757	method = 0;	976	if (!(flags & 0x0000ffffUL))
		977	flags |= ev_recommended_backends ();
		978
		979	backend = 0;
		980	backend_fd = -1;
758	#if EV_USE_WIN32	981	#if EV_USE_INOTIFY
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	987	#endif
761	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	990	#endif
764	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	993	#endif
767	#if EV_USE_POLL	994	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	996	#endif
770	#if EV_USE_SELECT	997	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	999	#endif
773		1000
774	ev_watcher_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
776	}	1003	}
777	}	1004	}
778		1005
779	void	1006	static void noinline
780	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
781	{	1008	{
782	int i;	1009	int i;
783		1010
784	#if EV_USE_WIN32	1011	#if EV_USE_INOTIFY
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	1021	#endif
787	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	1024	#endif
790	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	1027	#endif
793	#if EV_USE_POLL	1028	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	1030	#endif
796	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	1033	#endif
799		1034
800	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
801	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
802		1044
803	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	1046	array_free (fdchange, EMPTY);
805	array_free_microshit (timer);	1047	array_free (timer, EMPTY);
806	array_free_microshit (periodic);	1048	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	1049	array_free (periodic, EMPTY);
808	array_free_microshit (prepare);	1050	#endif
809	array_free_microshit (check);	1051	array_free (prepare, EMPTY);
		1052	array_free (check, EMPTY);
		1053	array_free (fork, EMPTY);
810		1054
811	method = 0;	1055	backend = 0;
812	}	1056	}
813		1057
814	static void	1058	void inline_size infy_fork (EV_P);
		1059
		1060	void inline_size
815	loop_fork (EV_P)	1061	loop_fork (EV_P)
816	{	1062	{
		1063	#if EV_USE_PORT
		1064	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1065	#endif
		1066	#if EV_USE_KQUEUE
		1067	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1068	#endif
817	#if EV_USE_EPOLL	1069	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1070	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif	1071	#endif
820	#if EV_USE_KQUEUE	1072	#if EV_USE_INOTIFY
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1073	infy_fork (EV_A);
822	#endif	1074	#endif
823		1075
824	if (ev_is_active (&sigev))	1076	if (ev_is_active (&sigev))
825	{	1077	{
826	/* default loop */	1078	/* default loop */
…		…
828	ev_ref (EV_A);	1080	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	1081	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	1082	close (sigpipe [0]);
831	close (sigpipe [1]);	1083	close (sigpipe [1]);
832		1084
833	while (ev_pipe (sigpipe))	1085	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	1086	syserr ("(libev) error creating pipe");
835		1087
836	siginit (EV_A);	1088	siginit (EV_A);
837	}	1089	}
838		1090
839	postfork = 0;	1091	postfork = 0;
840	}	1092	}
841		1093
842	#if EV_MULTIPLICITY	1094	#if EV_MULTIPLICITY
843	struct ev_loop *	1095	struct ev_loop *
844	ev_loop_new (int methods)	1096	ev_loop_new (unsigned int flags)
845	{	1097	{
846	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1098	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847		1099
848	memset (loop, 0, sizeof (struct ev_loop));	1100	memset (loop, 0, sizeof (struct ev_loop));
849		1101
850	loop_init (EV_A_ methods);	1102	loop_init (EV_A_ flags);
851		1103
852	if (ev_method (EV_A))	1104	if (ev_backend (EV_A))
853	return loop;	1105	return loop;
854		1106
855	return 0;	1107	return 0;
856	}	1108	}
857		1109
…		…
869	}	1121	}
870		1122
871	#endif	1123	#endif
872		1124
873	#if EV_MULTIPLICITY	1125	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	1126	struct ev_loop *
		1127	ev_default_loop_init (unsigned int flags)
878	#else	1128	#else
879	static int default_loop;
880
881	int	1129	int
		1130	ev_default_loop (unsigned int flags)
882	#endif	1131	#endif
883	ev_default_loop (int methods)
884	{	1132	{
885	if (sigpipe [0] == sigpipe [1])	1133	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	1134	if (pipe (sigpipe))
887	return 0;	1135	return 0;
888		1136
889	if (!default_loop)	1137	if (!ev_default_loop_ptr)
890	{	1138	{
891	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1140	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1141	#else
894	default_loop = 1;	1142	ev_default_loop_ptr = 1;
895	#endif	1143	#endif
896		1144
897	loop_init (EV_A_ methods);	1145	loop_init (EV_A_ flags);
898		1146
899	if (ev_method (EV_A))	1147	if (ev_backend (EV_A))
900	{	1148	{
901	siginit (EV_A);	1149	siginit (EV_A);
902		1150
903	#ifndef WIN32	1151	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1152	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1153	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1154	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1155	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1156	#endif
909	}	1157	}
910	else	1158	else
911	default_loop = 0;	1159	ev_default_loop_ptr = 0;
912	}	1160	}
913		1161
914	return default_loop;	1162	return ev_default_loop_ptr;
915	}	1163	}
916		1164
917	void	1165	void
918	ev_default_destroy (void)	1166	ev_default_destroy (void)
919	{	1167	{
920	#if EV_MULTIPLICITY	1168	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1169	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1170	#endif
923		1171
924	#ifndef WIN32	1172	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1173	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1174	ev_signal_stop (EV_A_ &childev);
927	#endif	1175	#endif
928		1176
929	ev_ref (EV_A); /* signal watcher */	1177	ev_ref (EV_A); /* signal watcher */
…		…
937		1185
938	void	1186	void
939	ev_default_fork (void)	1187	ev_default_fork (void)
940	{	1188	{
941	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1190	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1191	#endif
944		1192
945	if (method)	1193	if (backend)
946	postfork = 1;	1194	postfork = 1;
947	}	1195	}
948		1196
949	/*****************************************************************************/	1197	/*****************************************************************************/
950		1198
951	static void	1199	void
		1200	ev_invoke (EV_P_ void *w, int revents)
		1201	{
		1202	EV_CB_INVOKE ((W)w, revents);
		1203	}
		1204
		1205	void inline_speed
952	call_pending (EV_P)	1206	call_pending (EV_P)
953	{	1207	{
954	int pri;	1208	int pri;
955		1209
956	for (pri = NUMPRI; pri--; )	1210	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1211	while (pendingcnt [pri])
958	{	1212	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1213	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1214
961	if (p->w)	1215	if (expect_true (p->w))
962	{	1216	{
		1217	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1218
963	p->w->pending = 0;	1219	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1220	EV_CB_INVOKE (p->w, p->events);
965	}	1221	}
966	}	1222	}
967	}	1223	}
968		1224
969	static void	1225	void inline_size
970	timers_reify (EV_P)	1226	timers_reify (EV_P)
971	{	1227	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1228	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1229	{
974	struct ev_timer *w = timers [0];	1230	ev_timer *w = (ev_timer *)timers [0];
975		1231
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1232	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
977		1233
978	/* first reschedule or stop timer */	1234	/* first reschedule or stop timer */
979	if (w->repeat)	1235	if (w->repeat)
980	{	1236	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1237	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1238
982	((WT)w)->at = mn_now + w->repeat;	1239	((WT)w)->at += w->repeat;
		1240	if (((WT)w)->at < mn_now)
		1241	((WT)w)->at = mn_now;
		1242
983	downheap ((WT *)timers, timercnt, 0);	1243	downheap (timers, timercnt, 0);
984	}	1244	}
985	else	1245	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1246	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1247
988	event (EV_A_ (W)w, EV_TIMEOUT);	1248	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1249	}
990	}	1250	}
991		1251
992	static void	1252	#if EV_PERIODIC_ENABLE
		1253	void inline_size
993	periodics_reify (EV_P)	1254	periodics_reify (EV_P)
994	{	1255	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1256	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1257	{
997	struct ev_periodic *w = periodics [0];	1258	ev_periodic *w = (ev_periodic *)periodics [0];
998		1259
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1260	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1000		1261
1001	/* first reschedule or stop timer */	1262	/* first reschedule or stop timer */
1002	if (w->interval)	1263	if (w->reschedule_cb)
1003	{	1264	{
		1265	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1266	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1267	downheap (periodics, periodiccnt, 0);
		1268	}
		1269	else if (w->interval)
		1270	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1271	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1272	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1273	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1274	downheap (periodics, periodiccnt, 0);
1007	}	1275	}
1008	else	1276	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1277	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1278
1011	event (EV_A_ (W)w, EV_PERIODIC);	1279	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1280	}
1013	}	1281	}
1014		1282
1015	static void	1283	static void noinline
1016	periodics_reschedule (EV_P)	1284	periodics_reschedule (EV_P)
1017	{	1285	{
1018	int i;	1286	int i;
1019		1287
1020	/* adjust periodics after time jump */	1288	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1289	for (i = 0; i < periodiccnt; ++i)
1022	{	1290	{
1023	struct ev_periodic *w = periodics [i];	1291	ev_periodic *w = (ev_periodic *)periodics [i];
1024		1292
		1293	if (w->reschedule_cb)
		1294	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1295	else if (w->interval)
		1296	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1297	}
		1298
		1299	/* now rebuild the heap */
		1300	for (i = periodiccnt >> 1; i--; )
		1301	downheap (periodics, periodiccnt, i);
		1302	}
		1303	#endif
		1304
		1305	#if EV_IDLE_ENABLE
		1306	void inline_size
		1307	idle_reify (EV_P)
		1308	{
		1309	if (expect_false (idleall))
		1310	{
		1311	int pri;
		1312
		1313	for (pri = NUMPRI; pri--; )
1026	{	1314	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1315	if (pendingcnt [pri])
		1316	break;
1028		1317
1029	if (fabs (diff) >= 1e-4)	1318	if (idlecnt [pri])
1030	{	1319	{
1031	ev_periodic_stop (EV_A_ w);	1320	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1032	ev_periodic_start (EV_A_ w);	1321	break;
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}	1322	}
1036	}	1323	}
1037	}	1324	}
1038	}	1325	}
		1326	#endif
1039		1327
1040	inline int	1328	void inline_speed
1041	time_update_monotonic (EV_P)	1329	time_update (EV_P_ ev_tstamp max_block)
1042	{
1043	mn_now = get_clock ();
1044
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{
1047	rt_now = rtmn_diff + mn_now;
1048	return 0;
1049	}
1050	else
1051	{
1052	now_floor = mn_now;
1053	rt_now = ev_time ();
1054	return 1;
1055	}
1056	}
1057
1058	static void
1059	time_update (EV_P)
1060	{	1330	{
1061	int i;	1331	int i;
1062		1332
1063	#if EV_USE_MONOTONIC	1333	#if EV_USE_MONOTONIC
1064	if (expect_true (have_monotonic))	1334	if (expect_true (have_monotonic))
1065	{	1335	{
1066	if (time_update_monotonic (EV_A))	1336	ev_tstamp odiff = rtmn_diff;
		1337
		1338	mn_now = get_clock ();
		1339
		1340	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1341	/* interpolate in the meantime */
		1342	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1067	{	1343	{
1068	ev_tstamp odiff = rtmn_diff;	1344	ev_rt_now = rtmn_diff + mn_now;
		1345	return;
		1346	}
1069		1347
		1348	now_floor = mn_now;
		1349	ev_rt_now = ev_time ();
		1350
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1351	/* loop a few times, before making important decisions.
		1352	* on the choice of "4": one iteration isn't enough,
		1353	* in case we get preempted during the calls to
		1354	* ev_time and get_clock. a second call is almost guaranteed
		1355	* to succeed in that case, though. and looping a few more times
		1356	* doesn't hurt either as we only do this on time-jumps or
		1357	* in the unlikely event of having been preempted here.
		1358	*/
		1359	for (i = 4; --i; )
1071	{	1360	{
1072	rtmn_diff = rt_now - mn_now;	1361	rtmn_diff = ev_rt_now - mn_now;
1073		1362
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1363	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1364	return; /* all is well */
1076		1365
1077	rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1367	mn_now = get_clock ();
1079	now_floor = mn_now;	1368	now_floor = mn_now;
1080	}	1369	}
1081		1370
		1371	# if EV_PERIODIC_ENABLE
		1372	periodics_reschedule (EV_A);
		1373	# endif
		1374	/* no timer adjustment, as the monotonic clock doesn't jump */
		1375	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1376	}
		1377	else
		1378	#endif
		1379	{
		1380	ev_rt_now = ev_time ();
		1381
		1382	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1383	{
		1384	#if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1385	periodics_reschedule (EV_A);
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1386	#endif
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1387	/* adjust timers. this is easy, as the offset is the same for all of them */
		1388	for (i = 0; i < timercnt; ++i)
		1389	((WT)timers [i])->at += ev_rt_now - mn_now;
1085	}	1390	}
1086	}
1087	else
1088	#endif
1089	{
1090	rt_now = ev_time ();
1091		1391
1092	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{
1094	periodics_reschedule (EV_A);
1095
1096	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;
1099	}
1100
1101	mn_now = rt_now;	1392	mn_now = ev_rt_now;
1102	}	1393	}
1103	}	1394	}
1104		1395
1105	void	1396	void
1106	ev_ref (EV_P)	1397	ev_ref (EV_P)
…		…
1117	static int loop_done;	1408	static int loop_done;
1118		1409
1119	void	1410	void
1120	ev_loop (EV_P_ int flags)	1411	ev_loop (EV_P_ int flags)
1121	{	1412	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1413	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1414	? EVUNLOOP_ONE
		1415	: EVUNLOOP_CANCEL;
		1416
		1417	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1124		1418
1125	do	1419	do
1126	{	1420	{
		1421	#ifndef _WIN32
		1422	if (expect_false (curpid)) /* penalise the forking check even more */
		1423	if (expect_false (getpid () != curpid))
		1424	{
		1425	curpid = getpid ();
		1426	postfork = 1;
		1427	}
		1428	#endif
		1429
		1430	#if EV_FORK_ENABLE
		1431	/* we might have forked, so queue fork handlers */
		1432	if (expect_false (postfork))
		1433	if (forkcnt)
		1434	{
		1435	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1436	call_pending (EV_A);
		1437	}
		1438	#endif
		1439
1127	/* queue check watchers (and execute them) */	1440	/* queue prepare watchers (and execute them) */
1128	if (expect_false (preparecnt))	1441	if (expect_false (preparecnt))
1129	{	1442	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1443	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131	call_pending (EV_A);	1444	call_pending (EV_A);
1132	}	1445	}
1133		1446
		1447	if (expect_false (!activecnt))
		1448	break;
		1449
1134	/* we might have forked, so reify kernel state if necessary */	1450	/* we might have forked, so reify kernel state if necessary */
1135	if (expect_false (postfork))	1451	if (expect_false (postfork))
1136	loop_fork (EV_A);	1452	loop_fork (EV_A);
1137		1453
1138	/* update fd-related kernel structures */	1454	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1455	fd_reify (EV_A);
1140		1456
1141	/* calculate blocking time */	1457	/* calculate blocking time */
		1458	{
		1459	ev_tstamp block;
1142		1460
1143	/* we only need this for !monotonic clockor timers, but as we basically	1461	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1144	always have timers, we just calculate it always */	1462	block = 0.; /* do not block at all */
1145	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);
1148	else	1463	else
1149	#endif
1150	{	1464	{
1151	rt_now = ev_time ();	1465	/* update time to cancel out callback processing overhead */
1152	mn_now = rt_now;	1466	time_update (EV_A_ 1e100);
1153	}
1154		1467
1155	if (flags & EVLOOP_NONBLOCK || idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1468	block = MAX_BLOCKTIME;
1160		1469
1161	if (timercnt)	1470	if (timercnt)
1162	{	1471	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1472	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1473	if (block > to) block = to;
1165	}	1474	}
1166		1475
		1476	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1477	if (periodiccnt)
1168	{	1478	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1479	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1480	if (block > to) block = to;
1171	}	1481	}
		1482	#endif
1172		1483
1173	if (block < 0.) block = 0.;	1484	if (expect_false (block < 0.)) block = 0.;
1174	}	1485	}
1175		1486
		1487	++loop_count;
1176	method_poll (EV_A_ block);	1488	backend_poll (EV_A_ block);
1177		1489
1178	/* update rt_now, do magic */	1490	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1491	time_update (EV_A_ block);
		1492	}
1180		1493
1181	/* queue pending timers and reschedule them */	1494	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1495	timers_reify (EV_A); /* relative timers called last */
		1496	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1497	periodics_reify (EV_A); /* absolute timers called first */
		1498	#endif
1184		1499
		1500	#if EV_IDLE_ENABLE
1185	/* queue idle watchers unless io or timers are pending */	1501	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1502	idle_reify (EV_A);
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1503	#endif
1188		1504
1189	/* queue check watchers, to be executed first */	1505	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1506	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1507	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1508
1193	call_pending (EV_A);	1509	call_pending (EV_A);
		1510
1194	}	1511	}
1195	while (activecnt && !loop_done);	1512	while (expect_true (activecnt && !loop_done));
1196		1513
1197	if (loop_done != 2)	1514	if (loop_done == EVUNLOOP_ONE)
1198	loop_done = 0;	1515	loop_done = EVUNLOOP_CANCEL;
1199	}	1516	}
1200		1517
1201	void	1518	void
1202	ev_unloop (EV_P_ int how)	1519	ev_unloop (EV_P_ int how)
1203	{	1520	{
1204	loop_done = how;	1521	loop_done = how;
1205	}	1522	}
1206		1523
1207	/*****************************************************************************/	1524	/*****************************************************************************/
1208		1525
1209	inline void	1526	void inline_size
1210	wlist_add (WL *head, WL elem)	1527	wlist_add (WL *head, WL elem)
1211	{	1528	{
1212	elem->next = *head;	1529	elem->next = *head;
1213	*head = elem;	1530	*head = elem;
1214	}	1531	}
1215		1532
1216	inline void	1533	void inline_size
1217	wlist_del (WL *head, WL elem)	1534	wlist_del (WL *head, WL elem)
1218	{	1535	{
1219	while (*head)	1536	while (*head)
1220	{	1537	{
1221	if (*head == elem)	1538	if (*head == elem)
…		…
1226		1543
1227	head = &(*head)->next;	1544	head = &(*head)->next;
1228	}	1545	}
1229	}	1546	}
1230		1547
1231	inline void	1548	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1549	clear_pending (EV_P_ W w)
1233	{	1550	{
1234	if (w->pending)	1551	if (w->pending)
1235	{	1552	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1553	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1554	w->pending = 0;
1238	}	1555	}
1239	}	1556	}
1240		1557
1241	inline void	1558	int
		1559	ev_clear_pending (EV_P_ void *w)
		1560	{
		1561	W w_ = (W)w;
		1562	int pending = w_->pending;
		1563
		1564	if (expect_true (pending))
		1565	{
		1566	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1567	w_->pending = 0;
		1568	p->w = 0;
		1569	return p->events;
		1570	}
		1571	else
		1572	return 0;
		1573	}
		1574
		1575	void inline_size
		1576	pri_adjust (EV_P_ W w)
		1577	{
		1578	int pri = w->priority;
		1579	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1580	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1581	w->priority = pri;
		1582	}
		1583
		1584	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1585	ev_start (EV_P_ W w, int active)
1243	{	1586	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1587	pri_adjust (EV_A_ w);
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246
1247	w->active = active;	1588	w->active = active;
1248	ev_ref (EV_A);	1589	ev_ref (EV_A);
1249	}	1590	}
1250		1591
1251	inline void	1592	void inline_size
1252	ev_stop (EV_P_ W w)	1593	ev_stop (EV_P_ W w)
1253	{	1594	{
1254	ev_unref (EV_A);	1595	ev_unref (EV_A);
1255	w->active = 0;	1596	w->active = 0;
1256	}	1597	}
1257		1598
1258	/*****************************************************************************/	1599	/*****************************************************************************/
1259		1600
1260	void	1601	void noinline
1261	ev_io_start (EV_P_ struct ev_io *w)	1602	ev_io_start (EV_P_ ev_io *w)
1262	{	1603	{
1263	int fd = w->fd;	1604	int fd = w->fd;
1264		1605
1265	if (ev_is_active (w))	1606	if (expect_false (ev_is_active (w)))
1266	return;	1607	return;
1267		1608
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1609	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1610
1270	ev_start (EV_A_ (W)w, 1);	1611	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1612	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1613	wlist_add (&anfds[fd].head, (WL)w);
1273		1614
1274	fd_change (EV_A_ fd);	1615	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1616	w->events &= ~EV_IOFDSET;
1275	}	1617	}
1276		1618
1277	void	1619	void noinline
1278	ev_io_stop (EV_P_ struct ev_io *w)	1620	ev_io_stop (EV_P_ ev_io *w)
1279	{	1621	{
1280	ev_clear_pending (EV_A_ (W)w);	1622	clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1623	if (expect_false (!ev_is_active (w)))
1282	return;	1624	return;
1283		1625
		1626	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1627
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1628	wlist_del (&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1629	ev_stop (EV_A_ (W)w);
1286		1630
1287	fd_change (EV_A_ w->fd);	1631	fd_change (EV_A_ w->fd, 1);
1288	}	1632	}
1289		1633
1290	void	1634	void noinline
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1635	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1636	{
1293	if (ev_is_active (w))	1637	if (expect_false (ev_is_active (w)))
1294	return;	1638	return;
1295		1639
1296	((WT)w)->at += mn_now;	1640	((WT)w)->at += mn_now;
1297		1641
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1642	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1643
1300	ev_start (EV_A_ (W)w, ++timercnt);	1644	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1645	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1646	timers [timercnt - 1] = (WT)w;
1303	upheap ((WT *)timers, timercnt - 1);	1647	upheap (timers, timercnt - 1);
1304		1648
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1306	}	1650	}
1307		1651
1308	void	1652	void noinline
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1653	ev_timer_stop (EV_P_ ev_timer *w)
1310	{	1654	{
1311	ev_clear_pending (EV_A_ (W)w);	1655	clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1656	if (expect_false (!ev_is_active (w)))
1313	return;	1657	return;
1314		1658
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1659	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1316		1660
1317	if (((W)w)->active < timercnt--)	1661	{
		1662	int active = ((W)w)->active;
		1663
		1664	if (expect_true (--active < --timercnt))
1318	{	1665	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1666	timers [active] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1667	adjustheap (timers, timercnt, active);
1321	}	1668	}
		1669	}
1322		1670
1323	((WT)w)->at = w->repeat;	1671	((WT)w)->at -= mn_now;
1324		1672
1325	ev_stop (EV_A_ (W)w);	1673	ev_stop (EV_A_ (W)w);
1326	}	1674	}
1327		1675
1328	void	1676	void noinline
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1677	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1678	{
1331	if (ev_is_active (w))	1679	if (ev_is_active (w))
1332	{	1680	{
1333	if (w->repeat)	1681	if (w->repeat)
1334	{	1682	{
1335	((WT)w)->at = mn_now + w->repeat;	1683	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1684	adjustheap (timers, timercnt, ((W)w)->active - 1);
1337	}	1685	}
1338	else	1686	else
1339	ev_timer_stop (EV_A_ w);	1687	ev_timer_stop (EV_A_ w);
1340	}	1688	}
1341	else if (w->repeat)	1689	else if (w->repeat)
		1690	{
		1691	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1692	ev_timer_start (EV_A_ w);
		1693	}
1343	}	1694	}
1344		1695
1345	void	1696	#if EV_PERIODIC_ENABLE
		1697	void noinline
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1698	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1699	{
1348	if (ev_is_active (w))	1700	if (expect_false (ev_is_active (w)))
1349	return;	1701	return;
1350		1702
		1703	if (w->reschedule_cb)
		1704	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1705	else if (w->interval)
		1706	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1707	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1708	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1709	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1710	}
		1711	else
		1712	((WT)w)->at = w->offset;
1356		1713
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1714	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1715	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1716	periodics [periodiccnt - 1] = (WT)w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1717	upheap (periodics, periodiccnt - 1);
1361		1718
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1363	}	1720	}
1364		1721
1365	void	1722	void noinline
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1723	ev_periodic_stop (EV_P_ ev_periodic *w)
1367	{	1724	{
1368	ev_clear_pending (EV_A_ (W)w);	1725	clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))	1726	if (expect_false (!ev_is_active (w)))
1370	return;	1727	return;
1371		1728
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1729	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1373		1730
1374	if (((W)w)->active < periodiccnt--)	1731	{
		1732	int active = ((W)w)->active;
		1733
		1734	if (expect_true (--active < --periodiccnt))
1375	{	1735	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1736	periodics [active] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1737	adjustheap (periodics, periodiccnt, active);
1378	}	1738	}
		1739	}
1379		1740
1380	ev_stop (EV_A_ (W)w);	1741	ev_stop (EV_A_ (W)w);
1381	}	1742	}
1382		1743
1383	void	1744	void noinline
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1745	ev_periodic_again (EV_P_ ev_periodic *w)
1385	{	1746	{
1386	if (ev_is_active (w))	1747	/* TODO: use adjustheap and recalculation */
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));
1391	idles [idlecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	idles [((W)w)->active - 1] = idles [--idlecnt];
1402	ev_stop (EV_A_ (W)w);	1748	ev_periodic_stop (EV_A_ w);
		1749	ev_periodic_start (EV_A_ w);
1403	}	1750	}
1404		1751	#endif
1405	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));
1413	prepares [preparecnt - 1] = w;
1414	}
1415
1416	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426
1427	void
1428	ev_check_start (EV_P_ struct ev_check *w)
1429	{
1430	if (ev_is_active (w))
1431	return;
1432
1433	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));
1435	checks [checkcnt - 1] = w;
1436	}
1437
1438	void
1439	ev_check_stop (EV_P_ struct ev_check *w)
1440	{
1441	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))
1443	return;
1444
1445	checks [((W)w)->active - 1] = checks [--checkcnt];
1446	ev_stop (EV_A_ (W)w);
1447	}
1448		1752
1449	#ifndef SA_RESTART	1753	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1754	# define SA_RESTART 0
1451	#endif	1755	#endif
1452		1756
1453	void	1757	void noinline
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1758	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1759	{
1456	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1761	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1762	#endif
1459	if (ev_is_active (w))	1763	if (expect_false (ev_is_active (w)))
1460	return;	1764	return;
1461		1765
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1766	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1767
		1768	{
		1769	#ifndef _WIN32
		1770	sigset_t full, prev;
		1771	sigfillset (&full);
		1772	sigprocmask (SIG_SETMASK, &full, &prev);
		1773	#endif
		1774
		1775	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1776
		1777	#ifndef _WIN32
		1778	sigprocmask (SIG_SETMASK, &prev, 0);
		1779	#endif
		1780	}
		1781
1464	ev_start (EV_A_ (W)w, 1);	1782	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1783	wlist_add (&signals [w->signum - 1].head, (WL)w);
1467		1784
1468	if (!((WL)w)->next)	1785	if (!((WL)w)->next)
1469	{	1786	{
1470	#if WIN32	1787	#if _WIN32
1471	signal (w->signum, sighandler);	1788	signal (w->signum, sighandler);
1472	#else	1789	#else
1473	struct sigaction sa;	1790	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1791	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1792	sigfillset (&sa.sa_mask);
…		…
1477	sigaction (w->signum, &sa, 0);	1794	sigaction (w->signum, &sa, 0);
1478	#endif	1795	#endif
1479	}	1796	}
1480	}	1797	}
1481		1798
1482	void	1799	void noinline
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1800	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1801	{
1485	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1803	if (expect_false (!ev_is_active (w)))
1487	return;	1804	return;
1488		1805
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1806	wlist_del (&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1491		1808
1492	if (!signals [w->signum - 1].head)	1809	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1810	signal (w->signum, SIG_DFL);
1494	}	1811	}
1495		1812
1496	void	1813	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1814	ev_child_start (EV_P_ ev_child *w)
1498	{	1815	{
1499	#if EV_MULTIPLICITY	1816	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1817	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1818	#endif
1502	if (ev_is_active (w))	1819	if (expect_false (ev_is_active (w)))
1503	return;	1820	return;
1504		1821
1505	ev_start (EV_A_ (W)w, 1);	1822	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507	}	1824	}
1508		1825
1509	void	1826	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1827	ev_child_stop (EV_P_ ev_child *w)
1511	{	1828	{
1512	ev_clear_pending (EV_A_ (W)w);	1829	clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1830	if (expect_false (!ev_is_active (w)))
1514	return;	1831	return;
1515		1832
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1833	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1834	ev_stop (EV_A_ (W)w);
1518	}	1835	}
1519		1836
		1837	#if EV_STAT_ENABLE
		1838
		1839	# ifdef _WIN32
		1840	# undef lstat
		1841	# define lstat(a,b) _stati64 (a,b)
		1842	# endif
		1843
		1844	#define DEF_STAT_INTERVAL 5.0074891
		1845	#define MIN_STAT_INTERVAL 0.1074891
		1846
		1847	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1848
		1849	#if EV_USE_INOTIFY
		1850	# define EV_INOTIFY_BUFSIZE 8192
		1851
		1852	static void noinline
		1853	infy_add (EV_P_ ev_stat *w)
		1854	{
		1855	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);
		1856
		1857	if (w->wd < 0)
		1858	{
		1859	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1860
		1861	/* monitor some parent directory for speedup hints */
		1862	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1863	{
		1864	char path [4096];
		1865	strcpy (path, w->path);
		1866
		1867	do
		1868	{
		1869	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1870	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1871
		1872	char *pend = strrchr (path, '/');
		1873
		1874	if (!pend)
		1875	break; /* whoops, no '/', complain to your admin */
		1876
		1877	*pend = 0;
		1878	w->wd = inotify_add_watch (fs_fd, path, mask);
		1879	}
		1880	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1881	}
		1882	}
		1883	else
		1884	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1885
		1886	if (w->wd >= 0)
		1887	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1888	}
		1889
		1890	static void noinline
		1891	infy_del (EV_P_ ev_stat *w)
		1892	{
		1893	int slot;
		1894	int wd = w->wd;
		1895
		1896	if (wd < 0)
		1897	return;
		1898
		1899	w->wd = -2;
		1900	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1901	wlist_del (&fs_hash [slot].head, (WL)w);
		1902
		1903	/* remove this watcher, if others are watching it, they will rearm */
		1904	inotify_rm_watch (fs_fd, wd);
		1905	}
		1906
		1907	static void noinline
		1908	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1909	{
		1910	if (slot < 0)
		1911	/* overflow, need to check for all hahs slots */
		1912	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1913	infy_wd (EV_A_ slot, wd, ev);
		1914	else
		1915	{
		1916	WL w_;
		1917
		1918	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1919	{
		1920	ev_stat *w = (ev_stat *)w_;
		1921	w_ = w_->next; /* lets us remove this watcher and all before it */
		1922
		1923	if (w->wd == wd || wd == -1)
		1924	{
		1925	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1926	{
		1927	w->wd = -1;
		1928	infy_add (EV_A_ w); /* re-add, no matter what */
		1929	}
		1930
		1931	stat_timer_cb (EV_A_ &w->timer, 0);
		1932	}
		1933	}
		1934	}
		1935	}
		1936
		1937	static void
		1938	infy_cb (EV_P_ ev_io *w, int revents)
		1939	{
		1940	char buf [EV_INOTIFY_BUFSIZE];
		1941	struct inotify_event *ev = (struct inotify_event *)buf;
		1942	int ofs;
		1943	int len = read (fs_fd, buf, sizeof (buf));
		1944
		1945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1946	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1947	}
		1948
		1949	void inline_size
		1950	infy_init (EV_P)
		1951	{
		1952	if (fs_fd != -2)
		1953	return;
		1954
		1955	fs_fd = inotify_init ();
		1956
		1957	if (fs_fd >= 0)
		1958	{
		1959	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1960	ev_set_priority (&fs_w, EV_MAXPRI);
		1961	ev_io_start (EV_A_ &fs_w);
		1962	}
		1963	}
		1964
		1965	void inline_size
		1966	infy_fork (EV_P)
		1967	{
		1968	int slot;
		1969
		1970	if (fs_fd < 0)
		1971	return;
		1972
		1973	close (fs_fd);
		1974	fs_fd = inotify_init ();
		1975
		1976	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1977	{
		1978	WL w_ = fs_hash [slot].head;
		1979	fs_hash [slot].head = 0;
		1980
		1981	while (w_)
		1982	{
		1983	ev_stat *w = (ev_stat *)w_;
		1984	w_ = w_->next; /* lets us add this watcher */
		1985
		1986	w->wd = -1;
		1987
		1988	if (fs_fd >= 0)
		1989	infy_add (EV_A_ w); /* re-add, no matter what */
		1990	else
		1991	ev_timer_start (EV_A_ &w->timer);
		1992	}
		1993
		1994	}
		1995	}
		1996
		1997	#endif
		1998
		1999	void
		2000	ev_stat_stat (EV_P_ ev_stat *w)
		2001	{
		2002	if (lstat (w->path, &w->attr) < 0)
		2003	w->attr.st_nlink = 0;
		2004	else if (!w->attr.st_nlink)
		2005	w->attr.st_nlink = 1;
		2006	}
		2007
		2008	static void noinline
		2009	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2010	{
		2011	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2012
		2013	/* we copy this here each the time so that */
		2014	/* prev has the old value when the callback gets invoked */
		2015	w->prev = w->attr;
		2016	ev_stat_stat (EV_A_ w);
		2017
		2018	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2019	if (
		2020	w->prev.st_dev != w->attr.st_dev
		2021	|| w->prev.st_ino != w->attr.st_ino
		2022	|| w->prev.st_mode != w->attr.st_mode
		2023	|| w->prev.st_nlink != w->attr.st_nlink
		2024	|| w->prev.st_uid != w->attr.st_uid
		2025	|| w->prev.st_gid != w->attr.st_gid
		2026	|| w->prev.st_rdev != w->attr.st_rdev
		2027	|| w->prev.st_size != w->attr.st_size
		2028	|| w->prev.st_atime != w->attr.st_atime
		2029	|| w->prev.st_mtime != w->attr.st_mtime
		2030	|| w->prev.st_ctime != w->attr.st_ctime
		2031	) {
		2032	#if EV_USE_INOTIFY
		2033	infy_del (EV_A_ w);
		2034	infy_add (EV_A_ w);
		2035	ev_stat_stat (EV_A_ w); /* avoid race... */
		2036	#endif
		2037
		2038	ev_feed_event (EV_A_ w, EV_STAT);
		2039	}
		2040	}
		2041
		2042	void
		2043	ev_stat_start (EV_P_ ev_stat *w)
		2044	{
		2045	if (expect_false (ev_is_active (w)))
		2046	return;
		2047
		2048	/* since we use memcmp, we need to clear any padding data etc. */
		2049	memset (&w->prev, 0, sizeof (ev_statdata));
		2050	memset (&w->attr, 0, sizeof (ev_statdata));
		2051
		2052	ev_stat_stat (EV_A_ w);
		2053
		2054	if (w->interval < MIN_STAT_INTERVAL)
		2055	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2056
		2057	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2058	ev_set_priority (&w->timer, ev_priority (w));
		2059
		2060	#if EV_USE_INOTIFY
		2061	infy_init (EV_A);
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w);
		2065	else
		2066	#endif
		2067	ev_timer_start (EV_A_ &w->timer);
		2068
		2069	ev_start (EV_A_ (W)w, 1);
		2070	}
		2071
		2072	void
		2073	ev_stat_stop (EV_P_ ev_stat *w)
		2074	{
		2075	clear_pending (EV_A_ (W)w);
		2076	if (expect_false (!ev_is_active (w)))
		2077	return;
		2078
		2079	#if EV_USE_INOTIFY
		2080	infy_del (EV_A_ w);
		2081	#endif
		2082	ev_timer_stop (EV_A_ &w->timer);
		2083
		2084	ev_stop (EV_A_ (W)w);
		2085	}
		2086	#endif
		2087
		2088	#if EV_IDLE_ENABLE
		2089	void
		2090	ev_idle_start (EV_P_ ev_idle *w)
		2091	{
		2092	if (expect_false (ev_is_active (w)))
		2093	return;
		2094
		2095	pri_adjust (EV_A_ (W)w);
		2096
		2097	{
		2098	int active = ++idlecnt [ABSPRI (w)];
		2099
		2100	++idleall;
		2101	ev_start (EV_A_ (W)w, active);
		2102
		2103	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2104	idles [ABSPRI (w)][active - 1] = w;
		2105	}
		2106	}
		2107
		2108	void
		2109	ev_idle_stop (EV_P_ ev_idle *w)
		2110	{
		2111	clear_pending (EV_A_ (W)w);
		2112	if (expect_false (!ev_is_active (w)))
		2113	return;
		2114
		2115	{
		2116	int active = ((W)w)->active;
		2117
		2118	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2119	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2120
		2121	ev_stop (EV_A_ (W)w);
		2122	--idleall;
		2123	}
		2124	}
		2125	#endif
		2126
		2127	void
		2128	ev_prepare_start (EV_P_ ev_prepare *w)
		2129	{
		2130	if (expect_false (ev_is_active (w)))
		2131	return;
		2132
		2133	ev_start (EV_A_ (W)w, ++preparecnt);
		2134	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2135	prepares [preparecnt - 1] = w;
		2136	}
		2137
		2138	void
		2139	ev_prepare_stop (EV_P_ ev_prepare *w)
		2140	{
		2141	clear_pending (EV_A_ (W)w);
		2142	if (expect_false (!ev_is_active (w)))
		2143	return;
		2144
		2145	{
		2146	int active = ((W)w)->active;
		2147	prepares [active - 1] = prepares [--preparecnt];
		2148	((W)prepares [active - 1])->active = active;
		2149	}
		2150
		2151	ev_stop (EV_A_ (W)w);
		2152	}
		2153
		2154	void
		2155	ev_check_start (EV_P_ ev_check *w)
		2156	{
		2157	if (expect_false (ev_is_active (w)))
		2158	return;
		2159
		2160	ev_start (EV_A_ (W)w, ++checkcnt);
		2161	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2162	checks [checkcnt - 1] = w;
		2163	}
		2164
		2165	void
		2166	ev_check_stop (EV_P_ ev_check *w)
		2167	{
		2168	clear_pending (EV_A_ (W)w);
		2169	if (expect_false (!ev_is_active (w)))
		2170	return;
		2171
		2172	{
		2173	int active = ((W)w)->active;
		2174	checks [active - 1] = checks [--checkcnt];
		2175	((W)checks [active - 1])->active = active;
		2176	}
		2177
		2178	ev_stop (EV_A_ (W)w);
		2179	}
		2180
		2181	#if EV_EMBED_ENABLE
		2182	void noinline
		2183	ev_embed_sweep (EV_P_ ev_embed *w)
		2184	{
		2185	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2186	}
		2187
		2188	static void
		2189	embed_cb (EV_P_ ev_io *io, int revents)
		2190	{
		2191	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2192
		2193	if (ev_cb (w))
		2194	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2195	else
		2196	ev_embed_sweep (loop, w);
		2197	}
		2198
		2199	void
		2200	ev_embed_start (EV_P_ ev_embed *w)
		2201	{
		2202	if (expect_false (ev_is_active (w)))
		2203	return;
		2204
		2205	{
		2206	struct ev_loop *loop = w->loop;
		2207	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2208	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2209	}
		2210
		2211	ev_set_priority (&w->io, ev_priority (w));
		2212	ev_io_start (EV_A_ &w->io);
		2213
		2214	ev_start (EV_A_ (W)w, 1);
		2215	}
		2216
		2217	void
		2218	ev_embed_stop (EV_P_ ev_embed *w)
		2219	{
		2220	clear_pending (EV_A_ (W)w);
		2221	if (expect_false (!ev_is_active (w)))
		2222	return;
		2223
		2224	ev_io_stop (EV_A_ &w->io);
		2225
		2226	ev_stop (EV_A_ (W)w);
		2227	}
		2228	#endif
		2229
		2230	#if EV_FORK_ENABLE
		2231	void
		2232	ev_fork_start (EV_P_ ev_fork *w)
		2233	{
		2234	if (expect_false (ev_is_active (w)))
		2235	return;
		2236
		2237	ev_start (EV_A_ (W)w, ++forkcnt);
		2238	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2239	forks [forkcnt - 1] = w;
		2240	}
		2241
		2242	void
		2243	ev_fork_stop (EV_P_ ev_fork *w)
		2244	{
		2245	clear_pending (EV_A_ (W)w);
		2246	if (expect_false (!ev_is_active (w)))
		2247	return;
		2248
		2249	{
		2250	int active = ((W)w)->active;
		2251	forks [active - 1] = forks [--forkcnt];
		2252	((W)forks [active - 1])->active = active;
		2253	}
		2254
		2255	ev_stop (EV_A_ (W)w);
		2256	}
		2257	#endif
		2258
1520	/*****************************************************************************/	2259	/*****************************************************************************/
1521		2260
1522	struct ev_once	2261	struct ev_once
1523	{	2262	{
1524	struct ev_io io;	2263	ev_io io;
1525	struct ev_timer to;	2264	ev_timer to;
1526	void (*cb)(int revents, void *arg);	2265	void (*cb)(int revents, void *arg);
1527	void *arg;	2266	void *arg;
1528	};	2267	};
1529		2268
1530	static void	2269	static void
…		…
1539		2278
1540	cb (revents, arg);	2279	cb (revents, arg);
1541	}	2280	}
1542		2281
1543	static void	2282	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	2283	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	2284	{
1546	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2285	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547	}	2286	}
1548		2287
1549	static void	2288	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2289	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	2290	{
1552	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2291	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553	}	2292	}
1554		2293
1555	void	2294	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2295	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557	{	2296	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2297	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559		2298
1560	if (!once)	2299	if (expect_false (!once))
		2300	{
1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2301	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562	else	2302	return;
1563	{	2303	}
		2304
1564	once->cb = cb;	2305	once->cb = cb;
1565	once->arg = arg;	2306	once->arg = arg;
1566		2307
1567	ev_watcher_init (&once->io, once_cb_io);	2308	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	2309	if (fd >= 0)
1569	{	2310	{
1570	ev_io_set (&once->io, fd, events);	2311	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	2312	ev_io_start (EV_A_ &once->io);
1572	}	2313	}
1573		2314
1574	ev_watcher_init (&once->to, once_cb_to);	2315	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	2316	if (timeout >= 0.)
1576	{	2317	{
1577	ev_timer_set (&once->to, timeout, 0.);	2318	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	2319	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	2320	}
1581	}	2321	}
1582		2322
		2323	#ifdef __cplusplus
		2324	}
		2325	#endif
		2326

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