[ViewVC] Diff of: cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.6 by root, Sun May 11 19:11:05 2008 UTC vs.
Revision 1.13 by root, Tue May 13 19:34:11 2008 UTC

…		…
8	#include <errno.h>	8	#include <errno.h>
9	#include <sys/types.h>	9	#include <sys/types.h>
10	#include <sys/stat.h>	10	#include <sys/stat.h>
11	#include <limits.h>	11	#include <limits.h>
12	#include <fcntl.h>	12	#include <fcntl.h>
13	#include <sched.h>	13	#include <assert.h>
14		14
15	#ifndef EIO_FINISH	15	#ifndef EIO_FINISH
16	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	16	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
17	#endif	17	#endif
18		18
…		…
41	# ifndef EIO_STRUCT_DIRENT	41	# ifndef EIO_STRUCT_DIRENT
42	# define EIO_STRUCT_DIRENT struct dirent	42	# define EIO_STRUCT_DIRENT struct dirent
43	# endif	43	# endif
44		44
45	#endif	45	#endif
46
47	# ifndef EIO_STRUCT_STAT
48	# define EIO_STRUCT_STAT struct stat
49	# endif
50		46
51	#if HAVE_SENDFILE	47	#if HAVE_SENDFILE
52	# if __linux	48	# if __linux
53	# include <sys/sendfile.h>	49	# include <sys/sendfile.h>
54	# elif __freebsd	50	# elif __freebsd
…		…
74	/* buffer size for various temporary buffers */	70	/* buffer size for various temporary buffers */
75	#define EIO_BUFSIZE 65536	71	#define EIO_BUFSIZE 65536
76		72
77	#define dBUF \	73	#define dBUF \
78	char *eio_buf; \	74	char *eio_buf; \
79	X_LOCK (wrklock); \	75	X_LOCK (etplock); \
80	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	76	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \
81	X_UNLOCK (wrklock); \	77	X_UNLOCK (etplock); \
		78	errno = ENOMEM; \
82	if (!eio_buf) \	79	if (!eio_buf) \
83	return -1;	80	return -1;
84		81
85	#define EIO_TICKS ((1000000 + 1023) >> 10)	82	#define EIO_TICKS ((1000000 + 1023) >> 10)
86		83
87	static void (*want_poll_cb) (void);	84	/*****************************************************************************/
88	static void (*done_poll_cb) (void);
89
90	static unsigned int max_poll_time = 0;
91	static unsigned int max_poll_reqs = 0;
92		85
93	/* calculcate time difference in ~1/EIO_TICKS of a second */	86	/* calculcate time difference in ~1/EIO_TICKS of a second */
94	static int tvdiff (struct timeval tv1, struct timeval tv2)	87	static int tvdiff (struct timeval tv1, struct timeval tv2)
95	{	88	{
96	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	89	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
97	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	90	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
98	}	91	}
99		92
100	static unsigned int started, idle, wanted;	93	static unsigned int started, idle, wanted = 4;
101		94
102	/* worker threads management */	95	typedef struct etp_pool
		96	{
		97	void (*want_poll_cb) (void);
		98	void (*done_poll_cb) (void);
		99
		100	unsigned int max_poll_time;
		101	unsigned int max_poll_reqs;
		102	} etp_pool;
		103
		104	static volatile unsigned int nreqs, nready, npending;
		105	static volatile unsigned int max_idle = 4;
		106
		107	static mutex_t etplock = X_MUTEX_INIT;
103	static mutex_t wrklock = X_MUTEX_INIT;	108	static mutex_t reslock = X_MUTEX_INIT;
		109	static mutex_t reqlock = X_MUTEX_INIT;
		110	static cond_t reqwait = X_COND_INIT;
104		111
105	typedef struct worker {	112	typedef struct worker
		113	{
106	/* locked by wrklock */	114	/* locked by etplock */
107	struct worker prev, next;	115	struct worker prev, next;
108		116
109	thread_t tid;	117	thread_t tid;
110		118
111	/* locked by reslock, reqlock or wrklock */	119	/* locked by reslock, reqlock or etplock */
112	eio_req req; / currently processed request */	120	eio_req req; / currently processed request */
113	void *dbuf;	121	void *dbuf;
114	DIR *dirp;	122	DIR *dirp;
115	} worker;	123	} worker;
116		124
117	static worker wrk_first = { &wrk_first, &wrk_first, 0 };	125	static worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
		126
		127	/* worker threads management */
118		128
119	static void worker_clear (worker *wrk)	129	static void worker_clear (worker *wrk)
120	{	130	{
121	if (wrk->dirp)	131	if (wrk->dirp)
122	{	132	{
…		…
136	wrk->next->prev = wrk->prev;	146	wrk->next->prev = wrk->prev;
137	wrk->prev->next = wrk->next;	147	wrk->prev->next = wrk->next;
138		148
139	free (wrk);	149	free (wrk);
140	}	150	}
141
142	static volatile unsigned int nreqs, nready, npending;
143	static volatile unsigned int max_idle = 4;
144
145	static mutex_t reslock = X_MUTEX_INIT;
146	static mutex_t reqlock = X_MUTEX_INIT;
147	static cond_t reqwait = X_COND_INIT;
148		151
149	unsigned int eio_nreqs (void)	152	unsigned int eio_nreqs (void)
150	{	153	{
151	return nreqs;	154	return nreqs;
152	}	155	}
…		…
236	}	239	}
237		240
238	abort ();	241	abort ();
239	}	242	}
240		243
		244	static void etp_atfork_prepare (void)
		245	{
		246	X_LOCK (etplock);
		247	X_LOCK (reqlock);
		248	X_LOCK (reslock);
		249	#if !HAVE_PREADWRITE
		250	X_LOCK (preadwritelock);
		251	#endif
		252	#if !HAVE_READDIR_R
		253	X_LOCK (readdirlock);
		254	#endif
		255	}
		256
		257	static void etp_atfork_parent (void)
		258	{
		259	#if !HAVE_READDIR_R
		260	X_UNLOCK (readdirlock);
		261	#endif
		262	#if !HAVE_PREADWRITE
		263	X_UNLOCK (preadwritelock);
		264	#endif
		265	X_UNLOCK (reslock);
		266	X_UNLOCK (reqlock);
		267	X_UNLOCK (etplock);
		268	}
		269
		270	static void etp_atfork_child (void)
		271	{
		272	eio_req *prv;
		273
		274	while (prv = reqq_shift (&req_queue))
		275	eio_destroy (prv);
		276
		277	while (prv = reqq_shift (&res_queue))
		278	eio_destroy (prv);
		279
		280	while (wrk_first.next != &wrk_first)
		281	{
		282	worker *wrk = wrk_first.next;
		283
		284	if (wrk->req)
		285	eio_destroy (wrk->req);
		286
		287	worker_clear (wrk);
		288	worker_free (wrk);
		289	}
		290
		291	started = 0;
		292	idle = 0;
		293	nreqs = 0;
		294	nready = 0;
		295	npending = 0;
		296
		297	etp_atfork_parent ();
		298	}
		299
		300	static void
		301	etp_once_init (void)
		302	{
		303	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
		304	}
		305
		306	static int
		307	etp_init (etp_pool etp, void (want_poll)(void), void (*done_poll)(void))
		308	{
		309	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
		310
		311	pthread_once (&doinit, etp_once_init);
		312
		313	memset (etp, 0, sizeof *etp);
		314
		315	etp->want_poll_cb = want_poll;
		316	etp->done_poll_cb = done_poll;
		317	}
		318
		319	static etp_pool etp;
		320
		321	/*****************************************************************************/
		322
241	static void grp_try_feed (eio_req *grp)	323	static void grp_try_feed (eio_req *grp)
242	{	324	{
243	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	325	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
244	{	326	{
245	int old_len = grp->size;	327	int old_len = grp->size;
…		…
312	eio_cancel (grp);	394	eio_cancel (grp);
313	}	395	}
314		396
315	void eio_cancel (eio_req *req)	397	void eio_cancel (eio_req *req)
316	{	398	{
317	X_LOCK (wrklock);	399	X_LOCK (etplock);
318	req->flags \|= EIO_FLAG_CANCELLED;	400	req->flags \|= EIO_FLAG_CANCELLED;
319	X_UNLOCK (wrklock);	401	X_UNLOCK (etplock);
320		402
321	eio_grp_cancel (req);	403	eio_grp_cancel (req);
322	}	404	}
323		405
324	X_THREAD_PROC (eio_proc);	406	X_THREAD_PROC (eio_proc);
325		407
326	static void start_thread (void)	408	static void start_thread (void)
327	{	409	{
328	worker *wrk = calloc (1, sizeof (worker));	410	worker *wrk = calloc (1, sizeof (worker));
329		411
330	if (!wrk)	412	/TODO/
331	croak ("unable to allocate worker thread data");	413	assert (("unable to allocate worker thread data", wrk));
332		414
333	X_LOCK (wrklock);	415	X_LOCK (etplock);
334		416
335	if (thread_create (&wrk->tid, eio_proc, (void *)wrk))	417	if (thread_create (&wrk->tid, eio_proc, (void *)wrk))
336	{	418	{
337	wrk->prev = &wrk_first;	419	wrk->prev = &wrk_first;
338	wrk->next = wrk_first.next;	420	wrk->next = wrk_first.next;
…		…
341	++started;	423	++started;
342	}	424	}
343	else	425	else
344	free (wrk);	426	free (wrk);
345		427
346	X_UNLOCK (wrklock);	428	X_UNLOCK (etplock);
347	}	429	}
348		430
349	static void maybe_start_thread (void)	431	static void maybe_start_thread (void)
350	{	432	{
351	if (eio_nthreads () >= wanted)	433	if (eio_nthreads () >= wanted)
…		…
358	start_thread ();	440	start_thread ();
359	}	441	}
360		442
361	void eio_submit (eio_req *req)	443	void eio_submit (eio_req *req)
362	{	444	{
		445	req->pri += EIO_PRI_BIAS;
		446
		447	if (req->pri < EIO_PRI_MIN + EIO_PRI_BIAS) req->pri = EIO_PRI_MIN + EIO_PRI_BIAS;
		448	if (req->pri > EIO_PRI_MAX + EIO_PRI_BIAS) req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;
		449
363	++nreqs;	450	++nreqs;
364		451
365	X_LOCK (reqlock);	452	X_LOCK (reqlock);
366	++nready;	453	++nready;
367	reqq_push (&req_queue, req);	454	reqq_push (&req_queue, req);
…		…
381	X_LOCK (reqlock);	468	X_LOCK (reqlock);
382	reqq_push (&req_queue, req);	469	reqq_push (&req_queue, req);
383	X_COND_SIGNAL (reqwait);	470	X_COND_SIGNAL (reqwait);
384	X_UNLOCK (reqlock);	471	X_UNLOCK (reqlock);
385		472
386	X_LOCK (wrklock);	473	X_LOCK (etplock);
387	--started;	474	--started;
388	X_UNLOCK (wrklock);	475	X_UNLOCK (etplock);
389	}	476	}
390		477
391	void eio_set_max_poll_time (double nseconds)	478	void eio_set_max_poll_time (double nseconds)
392	{	479	{
393	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	480	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
394	max_poll_time = nseconds;	481	etp.max_poll_time = nseconds;
395	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	482	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
396	}	483	}
397		484
398	void eio_set_max_poll_reqs (unsigned int maxreqs)	485	void eio_set_max_poll_reqs (unsigned int maxreqs)
399	{	486	{
400	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	487	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
401	max_poll_reqs = maxreqs;	488	etp.max_poll_reqs = maxreqs;
402	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	489	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
403	}	490	}
404		491
405	void eio_set_max_idle (unsigned int nthreads)	492	void eio_set_max_idle (unsigned int nthreads)
406	{	493	{
…		…
424	end_thread ();	511	end_thread ();
425	}	512	}
426		513
427	int eio_poll (void)	514	int eio_poll (void)
428	{	515	{
429	int maxreqs = max_poll_reqs;	516	int maxreqs = etp.max_poll_reqs;
430	struct timeval tv_start, tv_now;	517	struct timeval tv_start, tv_now;
431	eio_req *req;	518	eio_req *req;
432		519
433	if (max_poll_time)	520	if (etp.max_poll_time)
434	gettimeofday (&tv_start, 0);	521	gettimeofday (&tv_start, 0);
435		522
436	for (;;)	523	for (;;)
437	{	524	{
438	maybe_start_thread ();	525	maybe_start_thread ();
…		…
442		529
443	if (req)	530	if (req)
444	{	531	{
445	--npending;	532	--npending;
446		533
447	if (!res_queue.size && done_poll_cb)	534	if (!res_queue.size && etp.done_poll_cb)
448	done_poll_cb ();	535	etp.done_poll_cb ();
449	}	536	}
450		537
451	X_UNLOCK (reslock);	538	X_UNLOCK (reslock);
452		539
453	if (!req)	540	if (!req)
…		…
468	}	555	}
469		556
470	if (maxreqs && !--maxreqs)	557	if (maxreqs && !--maxreqs)
471	break;	558	break;
472		559
473	if (max_poll_time)	560	if (etp.max_poll_time)
474	{	561	{
475	gettimeofday (&tv_now, 0);	562	gettimeofday (&tv_now, 0);
476		563
477	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)	564	if (tvdiff (&tv_start, &tv_now) >= etp.max_poll_time)
478	break;	565	break;
479	}	566	}
480	}	567	}
481		568
482	errno = EAGAIN;	569	errno = EAGAIN;
…		…
485		572
486	/*****************************************************************************/	573	/*****************************************************************************/
487	/* work around various missing functions */	574	/* work around various missing functions */
488		575
489	#if !HAVE_PREADWRITE	576	#if !HAVE_PREADWRITE
490	# define pread aio_pread	577	# define pread eio__pread
491	# define pwrite aio_pwrite	578	# define pwrite eio__pwrite
492		579
493	/*	580	/*
494	* make our pread/pwrite safe against themselves, but not against	581	* make our pread/pwrite safe against themselves, but not against
495	* normal read/write by using a mutex. slows down execution a lot,	582	* normal read/write by using a mutex. slows down execution a lot,
496	* but that's your problem, not mine.	583	* but that's your problem, not mine.
497	*/	584	*/
498	static mutex_t preadwritelock = X_MUTEX_INIT;	585	static mutex_t preadwritelock = X_MUTEX_INIT;
499		586
500	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	587	static ssize_t
		588	eio__pread (int fd, void *buf, size_t count, off_t offset)
501	{	589	{
502	ssize_t res;	590	ssize_t res;
503	off_t ooffset;	591	off_t ooffset;
504		592
505	X_LOCK (preadwritelock);	593	X_LOCK (preadwritelock);
…		…
510	X_UNLOCK (preadwritelock);	598	X_UNLOCK (preadwritelock);
511		599
512	return res;	600	return res;
513	}	601	}
514		602
515	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	603	static ssize_t
		604	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
516	{	605	{
517	ssize_t res;	606	ssize_t res;
518	off_t ooffset;	607	off_t ooffset;
519		608
520	X_LOCK (preadwritelock);	609	X_LOCK (preadwritelock);
…		…
528	}	617	}
529	#endif	618	#endif
530		619
531	#ifndef HAVE_FUTIMES	620	#ifndef HAVE_FUTIMES
532		621
533	# define utimes(path,times) aio_utimes (path, times)	622	# define utimes(path,times) eio__utimes (path, times)
534	# define futimes(fd,times) aio_futimes (fd, times)	623	# define futimes(fd,times) eio__futimes (fd, times)
535		624
		625	static int
536	static int aio_utimes (const char *filename, const struct timeval times[2])	626	eio__utimes (const char *filename, const struct timeval times[2])
537	{	627	{
538	if (times)	628	if (times)
539	{	629	{
540	struct utimbuf buf;	630	struct utimbuf buf;
541		631
…		…
546	}	636	}
547	else	637	else
548	return utime (filename, 0);	638	return utime (filename, 0);
549	}	639	}
550		640
551	static int aio_futimes (int fd, const struct timeval tv[2])	641	static int eio__futimes (int fd, const struct timeval tv[2])
552	{	642	{
553	errno = ENOSYS;	643	errno = ENOSYS;
554	return -1;	644	return -1;
555	}	645	}
556		646
…		…
559	#if !HAVE_FDATASYNC	649	#if !HAVE_FDATASYNC
560	# define fdatasync fsync	650	# define fdatasync fsync
561	#endif	651	#endif
562		652
563	#if !HAVE_READAHEAD	653	#if !HAVE_READAHEAD
564	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	654	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
565		655
		656	static ssize_t
566	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	657	eio__readahead (int fd, off_t offset, size_t count, worker *self)
567	{	658	{
568	size_t todo = count;	659	size_t todo = count;
569	dBUF;	660	dBUF;
570		661
571	while (todo > 0)	662	while (todo > 0)
…		…
582	}	673	}
583		674
584	#endif	675	#endif
585		676
586	#if !HAVE_READDIR_R	677	#if !HAVE_READDIR_R
587	# define readdir_r aio_readdir_r	678	# define readdir_r eio__readdir_r
588		679
589	static mutex_t readdirlock = X_MUTEX_INIT;	680	static mutex_t readdirlock = X_MUTEX_INIT;
590		681
		682	static int
591	static int readdir_r (DIR dirp, EIO_STRUCT_DIRENT ent, EIO_STRUCT_DIRENT **res)	683	eio__readdir_r (DIR dirp, EIO_STRUCT_DIRENT ent, EIO_STRUCT_DIRENT **res)
592	{	684	{
593	EIO_STRUCT_DIRENT *e;	685	EIO_STRUCT_DIRENT *e;
594	int errorno;	686	int errorno;
595		687
596	X_LOCK (readdirlock);	688	X_LOCK (readdirlock);
…		…
612	return e ? 0 : -1;	704	return e ? 0 : -1;
613	}	705	}
614	#endif	706	#endif
615		707
616	/* sendfile always needs emulation */	708	/* sendfile always needs emulation */
		709	static ssize_t
617	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)	710	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, worker *self)
618	{	711	{
619	ssize_t res;	712	ssize_t res;
620		713
621	if (!count)	714	if (!count)
622	return 0;	715	return 0;
…		…
705		798
706	return res;	799	return res;
707	}	800	}
708		801
709	/* read a full directory */	802	/* read a full directory */
		803	static void
710	static void scandir_ (eio_req req, worker self)	804	eio__scandir (eio_req req, worker self)
711	{	805	{
712	DIR *dirp;	806	DIR *dirp;
713	union	807	union
714	{	808	{
715	EIO_STRUCT_DIRENT d;	809	EIO_STRUCT_DIRENT d;
…		…
719	char name, names;	813	char name, names;
720	int memlen = 4096;	814	int memlen = 4096;
721	int memofs = 0;	815	int memofs = 0;
722	int res = 0;	816	int res = 0;
723		817
724	X_LOCK (wrklock);	818	X_LOCK (etplock);
725	self->dirp = dirp = opendir (req->ptr1);	819	self->dirp = dirp = opendir (req->ptr1);
726	self->dbuf = u = malloc (sizeof (*u));	820	self->dbuf = u = malloc (sizeof (*u));
727	req->flags \|= EIO_FLAG_PTR2_FREE;	821	req->flags \|= EIO_FLAG_PTR2_FREE;
728	req->ptr2 = names = malloc (memlen);	822	req->ptr2 = names = malloc (memlen);
729	X_UNLOCK (wrklock);	823	X_UNLOCK (etplock);
730		824
731	if (dirp && u && names)	825	if (dirp && u && names)
732	for (;;)	826	for (;;)
733	{	827	{
734	errno = 0;	828	errno = 0;
…		…
746	res++;	840	res++;
747		841
748	while (memofs + len > memlen)	842	while (memofs + len > memlen)
749	{	843	{
750	memlen *= 2;	844	memlen *= 2;
751	X_LOCK (wrklock);	845	X_LOCK (etplock);
752	req->ptr2 = names = realloc (names, memlen);	846	req->ptr2 = names = realloc (names, memlen);
753	X_UNLOCK (wrklock);	847	X_UNLOCK (etplock);
754		848
755	if (!names)	849	if (!names)
756	break;	850	break;
757	}	851	}
758		852
…		…
768	}	862	}
769		863
770	/*****************************************************************************/	864	/*****************************************************************************/
771		865
772	#define ALLOC(len) \	866	#define ALLOC(len) \
773	X_LOCK (wrklock); \
774	req->flags \|= EIO_FLAG_PTR2_FREE; \
775	X_UNLOCK (wrklock); \
776	req->ptr2 = malloc (len); \
777	if (!req->ptr2) \	867	if (!req->ptr2) \
778	{ \	868	{ \
		869	X_LOCK (etplock); \
		870	req->flags \|= EIO_FLAG_PTR2_FREE; \
		871	X_UNLOCK (etplock); \
		872	req->ptr2 = malloc (len); \
		873	if (!req->ptr2) \
		874	{ \
779	errno = ENOMEM; \	875	errno = ENOMEM; \
780	req->result = -1; \	876	req->result = -1; \
781	break; \	877	break; \
		878	} \
782	}	879	}
783		880
784	X_THREAD_PROC (eio_proc)	881	X_THREAD_PROC (eio_proc)
785	{	882	{
786	eio_req *req;	883	eio_req *req;
…		…
809	{	906	{
810	if (idle > max_idle)	907	if (idle > max_idle)
811	{	908	{
812	--idle;	909	--idle;
813	X_UNLOCK (reqlock);	910	X_UNLOCK (reqlock);
814	X_LOCK (wrklock);	911	X_LOCK (etplock);
815	--started;	912	--started;
816	X_UNLOCK (wrklock);	913	X_UNLOCK (etplock);
817	goto quit;	914	goto quit;
818	}	915	}
819		916
820	/* we are allowed to idle, so do so without any timeout */	917	/* we are allowed to idle, so do so without any timeout */
821	X_COND_WAIT (reqwait, reqlock);	918	X_COND_WAIT (reqwait, reqlock);
…		…
832	errno = 0; /* strictly unnecessary */	929	errno = 0; /* strictly unnecessary */
833		930
834	if (!EIO_CANCELLED (req))	931	if (!EIO_CANCELLED (req))
835	switch (req->type)	932	switch (req->type)
836	{	933	{
		934	case EIO_READ: ALLOC (req->size);
837	case EIO_READ: req->result = req->offs >= 0	935	req->result = req->offs >= 0
838	? pread (req->int1, req->ptr2, req->size, req->offs)	936	? pread (req->int1, req->ptr2, req->size, req->offs)
839	: read (req->int1, req->ptr2, req->size); break;	937	: read (req->int1, req->ptr2, req->size); break;
840	case EIO_WRITE: req->result = req->offs >= 0	938	case EIO_WRITE: req->result = req->offs >= 0
841	? pwrite (req->int1, req->ptr2, req->size, req->offs)	939	? pwrite (req->int1, req->ptr2, req->size, req->offs)
842	: write (req->int1, req->ptr2, req->size); break;	940	: write (req->int1, req->ptr2, req->size); break;
843		941
844	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	942	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
845	case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;	943	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;
846		944
847	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	945	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
848	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	946	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
849	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	947	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
850	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	948	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
…		…
866	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	964	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
867	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	965	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
868	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	966	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
869	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	967	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
870	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	968	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		969
871	case EIO_READLINK: ALLOC (NAME_MAX);	970	case EIO_READLINK: ALLOC (NAME_MAX);
872	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	971	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
873		972
874	case EIO_SYNC: req->result = 0; sync (); break;	973	case EIO_SYNC: req->result = 0; sync (); break;
875	case EIO_FSYNC: req->result = fsync (req->int1); break;	974	case EIO_FSYNC: req->result = fsync (req->int1); break;
876	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	975	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
877		976
878	case EIO_READDIR: scandir_ (req, self); break;	977	case EIO_READDIR: eio__scandir (req, self); break;
879		978
880	case EIO_BUSY:	979	case EIO_BUSY:
881	#ifdef _WIN32	980	#ifdef _WIN32
882	Sleep (req->nv1 * 1000.);	981	Sleep (req->nv1 * 1000.);
883	#else	982	#else
…		…
916	: utimes (req->ptr1, times);	1015	: utimes (req->ptr1, times);
917	}	1016	}
918		1017
919	case EIO_GROUP:	1018	case EIO_GROUP:
920	case EIO_NOP:	1019	case EIO_NOP:
		1020	req->result = 0;
921	break;	1021	break;
922		1022
923	case EIO_QUIT:	1023	case EIO_QUIT:
924	goto quit;	1024	goto quit;
925		1025
…		…
932		1032
933	X_LOCK (reslock);	1033	X_LOCK (reslock);
934		1034
935	++npending;	1035	++npending;
936		1036
937	if (!reqq_push (&res_queue, req) && want_poll_cb)	1037	if (!reqq_push (&res_queue, req) && etp.want_poll_cb)
938	want_poll_cb ();	1038	etp.want_poll_cb ();
939		1039
940	self->req = 0;	1040	self->req = 0;
941	worker_clear (self);	1041	worker_clear (self);
942		1042
943	X_UNLOCK (reslock);	1043	X_UNLOCK (reslock);
944	}	1044	}
945		1045
946	quit:	1046	quit:
947	X_LOCK (wrklock);	1047	X_LOCK (etplock);
948	worker_free (self);	1048	worker_free (self);
949	X_UNLOCK (wrklock);	1049	X_UNLOCK (etplock);
950		1050
951	return 0;	1051	return 0;
952	}	1052	}
953		1053
954	/*****************************************************************************/	1054	/*****************************************************************************/
955		1055
956	static void eio_atfork_prepare (void)
957	{
958	X_LOCK (wrklock);
959	X_LOCK (reqlock);
960	X_LOCK (reslock);
961	#if !HAVE_PREADWRITE
962	X_LOCK (preadwritelock);
963	#endif
964	#if !HAVE_READDIR_R
965	X_LOCK (readdirlock);
966	#endif
967	}
968
969	static void eio_atfork_parent (void)
970	{
971	#if !HAVE_READDIR_R
972	X_UNLOCK (readdirlock);
973	#endif
974	#if !HAVE_PREADWRITE
975	X_UNLOCK (preadwritelock);
976	#endif
977	X_UNLOCK (reslock);
978	X_UNLOCK (reqlock);
979	X_UNLOCK (wrklock);
980	}
981
982	static void eio_atfork_child (void)
983	{
984	eio_req *prv;
985
986	while (prv = reqq_shift (&req_queue))
987	eio_destroy (prv);
988
989	while (prv = reqq_shift (&res_queue))
990	eio_destroy (prv);
991
992	while (wrk_first.next != &wrk_first)
993	{
994	worker *wrk = wrk_first.next;
995
996	if (wrk->req)
997	eio_destroy (wrk->req);
998
999	worker_clear (wrk);
1000	worker_free (wrk);
1001	}
1002
1003	started = 0;
1004	idle = 0;
1005	nreqs = 0;
1006	nready = 0;
1007	npending = 0;
1008
1009	eio_atfork_parent ();
1010	}
1011
1012	int eio_init (void (want_poll)(void), void (done_poll)(void))	1056	int eio_init (void (want_poll)(void), void (done_poll)(void))
1013	{	1057	{
1014	want_poll_cb = want_poll;	1058	etp_init (&etp, want_poll, done_poll);
1015	done_poll_cb = done_poll;
1016
1017	#ifdef _WIN32
1018	X_MUTEX_CHECK (wrklock);
1019	X_MUTEX_CHECK (reslock);
1020	X_MUTEX_CHECK (reqlock);
1021	X_MUTEX_CHECK (reqwait);
1022	X_MUTEX_CHECK (preadwritelock);
1023	X_MUTEX_CHECK (readdirlock);
1024
1025	X_COND_CHECK (reqwait);
1026	#endif
1027
1028	X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child);
1029	}	1059	}
1030		1060
1031	static void eio_api_destroy (eio_req *req)	1061	static void eio_api_destroy (eio_req *req)
1032	{	1062	{
1033	free (req);	1063	free (req);
…		…
1038	\	1068	\
1039	req = (eio_req )calloc (1, sizeof req); \	1069	req = (eio_req )calloc (1, sizeof req); \
1040	if (!req) \	1070	if (!req) \
1041	return 0; \	1071	return 0; \
1042	\	1072	\
1043	req->type = EIO_ ## rtype; \	1073	req->type = rtype; \
1044	req->pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \	1074	req->pri = pri; \
1045	req->finish = cb; \	1075	req->finish = cb; \
		1076	req->data = data; \
1046	req->destroy = eio_api_destroy;	1077	req->destroy = eio_api_destroy;
1047		1078
1048	#define SEND eio_submit (req); return req	1079	#define SEND eio_submit (req); return req
1049		1080
1050	#define PATH (void)0	1081	#define PATH \
		1082	req->flags \|= EIO_FLAG_PTR1_FREE; \
		1083	req->ptr1 = strdup (path); \
		1084	if (!req->ptr1) \
		1085	{ \
		1086	eio_api_destroy (req); \
		1087	return 0; \
		1088	}
1051		1089
		1090	#ifndef EIO_NO_WRAPPERS
		1091
		1092	eio_req eio_nop (int pri, eio_cb cb, void data)
		1093	{
		1094	REQ (EIO_NOP); SEND;
		1095	}
		1096
		1097	eio_req eio_busy (double delay, int pri, eio_cb cb, void data)
		1098	{
		1099	REQ (EIO_BUSY); req->nv1 = delay; SEND;
		1100	}
		1101
1052	eio_req *eio_fsync (int fd, eio_cb cb)	1102	eio_req eio_sync (int pri, eio_cb cb, void data)
1053	{	1103	{
		1104	REQ (EIO_SYNC); SEND;
		1105	}
		1106
		1107	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)
		1108	{
1054	REQ (FSYNC); req->int1 = fd; SEND;	1109	REQ (EIO_FSYNC); req->int1 = fd; SEND;
1055	}	1110	}
1056		1111
1057	eio_req *eio_fdatasync (int fd, eio_cb cb)	1112	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)
1058	{	1113	{
1059	REQ (FDATASYNC); req->int1 = fd; SEND;	1114	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1060	}	1115	}
1061		1116
		1117	eio_req eio_close (int fd, int pri, eio_cb cb, void data)
		1118	{
		1119	REQ (EIO_CLOSE); req->int1 = fd; SEND;
		1120	}
		1121
1062	eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb)	1122	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)
1063	{	1123	{
1064	REQ (READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	1124	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
1065	}	1125	}
1066		1126
1067	eio_req eio_read (int fd, off_t offset, size_t length, void data, eio_cb cb)	1127	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1068	{	1128	{
1069	REQ (READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND;	1129	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1070	}	1130	}
1071		1131
1072	eio_req eio_write (int fd, off_t offset, size_t length, void data, eio_cb cb)	1132	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1073	{	1133	{
1074	REQ (WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND;	1134	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1075	}	1135	}
1076		1136
1077	eio_req *eio_fstat (int fd, eio_cb cb)	1137	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
1078	{	1138	{
1079	REQ (FSTAT); req->int1 = fd; SEND;	1139	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1080	}	1140	}
1081		1141
1082	eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb)	1142	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)
1083	{	1143	{
1084	REQ (FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	1144	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1085	}	1145	}
1086		1146
1087	eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb)	1147	eio_req eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void data)
1088	{	1148	{
1089	REQ (FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;	1149	REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
1090	}	1150	}
1091		1151
1092	eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb)	1152	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data)
1093	{	1153	{
1094	REQ (FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	1154	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1095	}	1155	}
1096		1156
1097	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb)	1157	eio_req eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void data)
1098	{	1158	{
1099	REQ (FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	1159	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1100	}	1160	}
1101		1161
1102	eio_req *eio_dup2 (int fd, int fd2, eio_cb cb)	1162	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data)
1103	{	1163	{
1104	REQ (DUP2); req->int1 = fd; req->int2 = fd2; SEND;	1164	REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
1105	}	1165	}
1106		1166
1107	eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb)	1167	eio_req eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void data)
1108	{	1168	{
1109	REQ (SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;	1169	REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
1110	}	1170	}
1111		1171
1112	eio_req eio_open (const char path, int flags, mode_t mode, eio_cb cb)	1172	eio_req eio_open (const char path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
1113	{	1173	{
1114	REQ (OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;	1174	REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
1115	}	1175	}
1116		1176
1117	eio_req eio_readlink (const char path, eio_cb cb)
1118	{
1119	REQ (READLINK); PATH; SEND;
1120	}
1121
1122	eio_req eio_stat (const char path, eio_cb cb)
1123	{
1124	REQ (STAT); PATH; SEND;
1125	}
1126
1127	eio_req eio_lstat (const char path, eio_cb cb)
1128	{
1129	REQ (LSTAT); PATH; SEND;
1130	}
1131
1132	eio_req eio_utime (const char path, double atime, double mtime, eio_cb cb)	1177	eio_req eio_utime (const char path, double atime, double mtime, int pri, eio_cb cb, void *data)
1133	{	1178	{
1134	REQ (UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;	1179	REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
1135	}	1180	}
1136		1181
1137	eio_req eio_truncate (const char path, off_t offset, eio_cb cb)	1182	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data)
1138	{	1183	{
1139	REQ (TRUNCATE); PATH; req->offs = offset; SEND;	1184	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1140	}	1185	}
1141		1186
1142	eio_req eio_chown (const char path, uid_t uid, gid_t gid, eio_cb cb)	1187	eio_req eio_chown (const char path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)
1143	{	1188	{
1144	REQ (CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	1189	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1145	}	1190	}
1146		1191
1147	eio_req eio_chmod (const char path, mode_t mode, eio_cb cb)	1192	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data)
1148	{	1193	{
1149	REQ (CHMOD); PATH; req->int2 = (long)mode; SEND;	1194	REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
1150	}	1195	}
1151		1196
1152	eio_req eio_mkdir (const char path, mode_t mode, eio_cb cb)	1197	eio_req eio_mkdir (const char path, mode_t mode, int pri, eio_cb cb, void *data)
1153	{	1198	{
1154	REQ (MKDIR); PATH; req->int2 = (long)mode; SEND;	1199	REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
1155	}	1200	}
1156		1201
1157	eio_req eio_unlink (const char path, eio_cb cb)	1202	static eio_req *
		1203	eio__1path (int type, const char path, int pri, eio_cb cb, void data)
1158	{	1204	{
1159	REQ (UNLINK); PATH; SEND;
1160	}
1161
1162	eio_req eio_rmdir (const char path, eio_cb cb)
1163	{
1164	REQ (RMDIR); PATH; SEND;	1205	REQ (type); PATH; SEND;
1165	}	1206	}
1166		1207
		1208	eio_req eio_readlink (const char path, int pri, eio_cb cb, void *data)
		1209	{
		1210	return eio__1path (EIO_READLINK, path, pri, cb, data);
		1211	}
		1212
		1213	eio_req eio_stat (const char path, int pri, eio_cb cb, void *data)
		1214	{
		1215	return eio__1path (EIO_STAT, path, pri, cb, data);
		1216	}
		1217
		1218	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)
		1219	{
		1220	return eio__1path (EIO_LSTAT, path, pri, cb, data);
		1221	}
		1222
		1223	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)
		1224	{
		1225	return eio__1path (EIO_UNLINK, path, pri, cb, data);
		1226	}
		1227
		1228	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)
		1229	{
		1230	return eio__1path (EIO_RMDIR, path, pri, cb, data);
		1231	}
		1232
1167	eio_req eio_readdir (const char path, eio_cb cb)	1233	eio_req eio_readdir (const char path, int pri, eio_cb cb, void *data)
1168	{	1234	{
1169	REQ (READDIR); PATH; SEND;	1235	return eio__1path (EIO_READDIR, path, pri, cb, data);
1170	}	1236	}
1171		1237
1172	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, eio_cb cb)	1238	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1173	{	1239	{
1174	REQ (MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND;	1240	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND;
1175	}	1241	}
1176		1242
1177	eio_req *eio_busy (double delay, eio_cb cb)	1243	static eio_req *
		1244	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)
1178	{	1245	{
1179	REQ (BUSY); req->nv1 = delay; SEND;	1246	REQ (type); PATH;
1180	}
1181		1247
		1248	req->flags \|= EIO_FLAG_PTR2_FREE;
		1249	req->ptr2 = strdup (new_path);
		1250	if (!req->ptr2)
		1251	{
		1252	eio_api_destroy (req);
		1253	return 0;
		1254	}
		1255
		1256	SEND;
		1257	}
		1258
		1259	eio_req eio_link (const char path, const char new_path, int pri, eio_cb cb, void data)
		1260	{
		1261	return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
		1262	}
		1263
		1264	eio_req eio_symlink (const char path, const char new_path, int pri, eio_cb cb, void data)
		1265	{
		1266	return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
		1267	}
		1268
		1269	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
		1270	{
		1271	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
		1272	}
		1273
		1274	#endif
		1275
1182	eio_req *eio_nop (eio_cb cb)	1276	eio_req eio_grp (eio_cb cb, void data)
1183	{	1277	{
		1278	const int pri = EIO_PRI_MAX;
		1279
1184	REQ (NOP); SEND;	1280	REQ (EIO_GROUP); SEND;
1185	}	1281	}
1186		1282
1187	#undef REQ	1283	#undef REQ
1188	#undef PATH	1284	#undef PATH
1189	#undef SEND	1285	#undef SEND
1190		1286
1191	#if 0	1287	/*****************************************************************************/
1192		1288	/* grp functions */
1193	void
1194	aio_open (SV8 pathname, int flags, int mode, SV callback=&PL_sv_undef)
1195	PROTOTYPE: $$$;$
1196	PPCODE:
1197	{
1198	dREQ;
1199
1200	req->type = EIO_OPEN;
1201	req->sv1 = newSVsv (pathname);
1202	req->ptr1 = SvPVbyte_nolen (req->sv1);
1203	req->int1 = flags;
1204	req->int2 = mode;
1205
1206	EIO_SEND;
1207	}
1208
1209	void
1210	aio_fsync (SV fh, SV callback=&PL_sv_undef)
1211	PROTOTYPE: $;$
1212	ALIAS:
1213	aio_fsync = EIO_FSYNC
1214	aio_fdatasync = EIO_FDATASYNC
1215	PPCODE:
1216	{
1217	dREQ;
1218
1219	req->type = ix;
1220	req->sv1 = newSVsv (fh);
1221	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1222
1223	EIO_SEND (req);
1224	}
1225
1226	void
1227	aio_close (SV fh, SV callback=&PL_sv_undef)
1228	PROTOTYPE: $;$
1229	PPCODE:
1230	{
1231	dREQ;
1232
1233	req->type = EIO_CLOSE;
1234	req->sv1 = newSVsv (fh);
1235	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1236
1237	EIO_SEND (req);
1238	}
1239
1240	void
1241	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback=&PL_sv_undef)
1242	ALIAS:
1243	aio_read = EIO_READ
1244	aio_write = EIO_WRITE
1245	PROTOTYPE: $$$$$;$
1246	PPCODE:
1247	{
1248	STRLEN svlen;
1249	char *svptr = SvPVbyte (data, svlen);
1250	UV len = SvUV (length);
1251
1252	SvUPGRADE (data, SVt_PV);
1253	SvPOK_on (data);
1254
1255	if (dataoffset < 0)
1256	dataoffset += svlen;
1257
1258	if (dataoffset < 0 \|\| dataoffset > svlen)
1259	croak ("dataoffset outside of data scalar");
1260
1261	if (ix == EIO_WRITE)
1262	{
1263	/* write: check length and adjust. */
1264	if (!SvOK (length) \|\| len + dataoffset > svlen)
1265	len = svlen - dataoffset;
1266	}
1267	else
1268	{
1269	/* read: grow scalar as necessary */
1270	svptr = SvGROW (data, len + dataoffset + 1);
1271	}
1272
1273	if (len < 0)
1274	croak ("length must not be negative");
1275
1276	{
1277	dREQ;
1278
1279	req->type = ix;
1280	req->sv1 = newSVsv (fh);
1281	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1282	: IoOFP (sv_2io (fh)));
1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1284	req->size = len;
1285	req->sv2 = SvREFCNT_inc (data);
1286	req->ptr2 = (char *)svptr + dataoffset;
1287	req->stroffset = dataoffset;
1288
1289	if (!SvREADONLY (data))
1290	{
1291	SvREADONLY_on (data);
1292	req->flags \|= FLAG_SV2_RO_OFF;
1293	}
1294
1295	EIO_SEND;
1296	}
1297	}
1298
1299	void
1300	aio_readlink (SV8 path, SV callback=&PL_sv_undef)
1301	PROTOTYPE: $$;$
1302	PPCODE:
1303	{
1304	SV *data;
1305	dREQ;
1306
1307	data = newSV (NAME_MAX);
1308	SvPOK_on (data);
1309
1310	req->type = EIO_READLINK;
1311	req->sv1 = newSVsv (path);
1312	req->ptr1 = SvPVbyte_nolen (req->sv1);
1313	req->sv2 = data;
1314	req->ptr2 = SvPVbyte_nolen (data);
1315
1316	EIO_SEND;
1317	}
1318
1319	void
1320	aio_sendfile (SV out_fh, SV in_fh, SV in_offset, UV length, SV callback=&PL_sv_undef)
1321	PROTOTYPE: $$$$;$
1322	PPCODE:
1323	{
1324	dREQ;
1325
1326	req->type = EIO_SENDFILE;
1327	req->sv1 = newSVsv (out_fh);
1328	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1329	req->sv2 = newSVsv (in_fh);
1330	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1331	req->offs = SvVAL64 (in_offset);
1332	req->size = length;
1333
1334	EIO_SEND;
1335	}
1336
1337	void
1338	aio_readahead (SV fh, SV offset, IV length, SV *callback=&PL_sv_undef)
1339	PROTOTYPE: $$$;$
1340	PPCODE:
1341	{
1342	dREQ;
1343
1344	req->type = EIO_READAHEAD;
1345	req->sv1 = newSVsv (fh);
1346	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1347	req->offs = SvVAL64 (offset);
1348	req->size = length;
1349
1350	EIO_SEND;
1351	}
1352
1353	void
1354	aio_stat (SV8 fh_or_path, SV callback=&PL_sv_undef)
1355	ALIAS:
1356	aio_stat = EIO_STAT
1357	aio_lstat = EIO_LSTAT
1358	PPCODE:
1359	{
1360	dREQ;
1361
1362	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1363	if (!req->ptr2)
1364	{
1365	req_destroy (req);
1366	croak ("out of memory during aio_stat statdata allocation");
1367	}
1368
1369	req->flags \|= FLAG_PTR2_FREE;
1370	req->sv1 = newSVsv (fh_or_path);
1371
1372	if (SvPOK (fh_or_path))
1373	{
1374	req->type = ix;
1375	req->ptr1 = SvPVbyte_nolen (req->sv1);
1376	}
1377	else
1378	{
1379	req->type = EIO_FSTAT;
1380	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1381	}
1382
1383	EIO_SEND;
1384	}
1385
1386	void
1387	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback=&PL_sv_undef)
1388	PPCODE:
1389	{
1390	dREQ;
1391
1392	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1393	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1394	req->sv1 = newSVsv (fh_or_path);
1395
1396	if (SvPOK (fh_or_path))
1397	{
1398	req->type = EIO_UTIME;
1399	req->ptr1 = SvPVbyte_nolen (req->sv1);
1400	}
1401	else
1402	{
1403	req->type = EIO_FUTIME;
1404	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1405	}
1406
1407	EIO_SEND;
1408	}
1409
1410	void
1411	aio_truncate (SV8 fh_or_path, SV offset, SV *callback=&PL_sv_undef)
1412	PPCODE:
1413	{
1414	dREQ;
1415
1416	req->sv1 = newSVsv (fh_or_path);
1417	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1418
1419	if (SvPOK (fh_or_path))
1420	{
1421	req->type = EIO_TRUNCATE;
1422	req->ptr1 = SvPVbyte_nolen (req->sv1);
1423	}
1424	else
1425	{
1426	req->type = EIO_FTRUNCATE;
1427	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1428	}
1429
1430	EIO_SEND;
1431	}
1432
1433	void
1434	aio_chmod (SV8 fh_or_path, int mode, SV callback=&PL_sv_undef)
1435	ALIAS:
1436	aio_chmod = EIO_CHMOD
1437	aio_fchmod = EIO_FCHMOD
1438	aio_mkdir = EIO_MKDIR
1439	PPCODE:
1440	{
1441	dREQ;
1442
1443	req->type = type;
1444	req->int2 = mode;
1445	req->sv1 = newSVsv (fh_or_path);
1446
1447	if (ix == EIO_FCHMOD)
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1449	else
1450	req->ptr1 = SvPVbyte_nolen (req->sv1);
1451
1452	EIO_SEND;
1453	}
1454
1455	void
1456	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback=&PL_sv_undef)
1457	PPCODE:
1458	{
1459	dREQ;
1460
1461	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1462	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1463	req->sv1 = newSVsv (fh_or_path);
1464
1465	if (SvPOK (fh_or_path))
1466	{
1467	req->type = EIO_CHOWN;
1468	req->ptr1 = SvPVbyte_nolen (req->sv1);
1469	}
1470	else
1471	{
1472	req->type = EIO_FCHOWN;
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1474	}
1475
1476	EIO_SEND;
1477	}
1478
1479	void
1480	aio_unlink (SV8 pathname, SV callback=&PL_sv_undef)
1481	ALIAS:
1482	aio_unlink = EIO_UNLINK
1483	aio_rmdir = EIO_RMDIR
1484	aio_readdir = EIO_READDIR
1485	PPCODE:
1486	{
1487	dREQ;
1488
1489	req->type = ix;
1490	req->sv1 = newSVsv (pathname);
1491	req->ptr1 = SvPVbyte_nolen (req->sv1);
1492
1493	EIO_SEND;
1494	}
1495
1496	void
1497	aio_link (SV8 oldpath, SV8 newpath, SV *callback=&PL_sv_undef)
1498	ALIAS:
1499	aio_link = EIO_LINK
1500	aio_symlink = EIO_SYMLINK
1501	aio_rename = EIO_RENAME
1502	PPCODE:
1503	{
1504	dREQ;
1505
1506	req->type = ix;
1507	req->sv1 = newSVsv (oldpath);
1508	req->ptr1 = SvPVbyte_nolen (req->sv1);
1509	req->sv2 = newSVsv (newpath);
1510	req->ptr2 = SvPVbyte_nolen (req->sv2);
1511
1512	EIO_SEND;
1513	}
1514
1515	void
1516	aio_mknod (SV8 pathname, int mode, UV dev, SV callback=&PL_sv_undef)
1517	PPCODE:
1518	{
1519	dREQ;
1520
1521	req->type = EIO_MKNOD;
1522	req->sv1 = newSVsv (pathname);
1523	req->ptr1 = SvPVbyte_nolen (req->sv1);
1524	req->int2 = (mode_t)mode;
1525	req->offs = dev;
1526
1527	EIO_SEND;
1528	}
1529
1530	void
1531	aio_busy (double delay, SV *callback=&PL_sv_undef)
1532	PPCODE:
1533	{
1534	dREQ;
1535
1536	req->type = EIO_BUSY;
1537	req->nv1 = delay < 0. ? 0. : delay;
1538
1539	EIO_SEND;
1540	}
1541
1542	void
1543	aio_group (SV *callback=&PL_sv_undef)
1544	PROTOTYPE: ;$
1545	PPCODE:
1546	{
1547	dREQ;
1548
1549	req->type = EIO_GROUP;
1550
1551	req_send (req);
1552	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1553	}
1554
1555	void
1556	aio_nop (SV *callback=&PL_sv_undef)
1557	ALIAS:
1558	aio_nop = EIO_NOP
1559	aio_sync = EIO_SYNC
1560	PPCODE:
1561	{
1562	dREQ;
1563
1564	#endif
1565		1289
1566	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)	1290	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)
1567	{	1291	{
1568	grp->int2 = limit;	1292	grp->int2 = limit;
1569	grp->feed = feed;	1293	grp->feed = feed;
…		…
1592	grp->grp_first->grp_prev = req;	1316	grp->grp_first->grp_prev = req;
1593		1317
1594	grp->grp_first = req;	1318	grp->grp_first = req;
1595	}	1319	}
1596		1320
		1321	/*****************************************************************************/
		1322	/* misc garbage */
1597		1323
		1324	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
		1325	{
		1326	worker wrk;
		1327
		1328	wrk.dbuf = 0;
		1329
		1330	eio__sendfile (ofd, ifd, offset, count, &wrk);
		1331
		1332	if (wrk.dbuf)
		1333	free (wrk.dbuf);
		1334	}
		1335

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Comparing libeio/eio.c (file contents): Revision 1.6 by root, Sun May 11 19:11:05 2008 UTC vs. Revision 1.13 by root, Tue May 13 19:34:11 2008 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.6 by root, Sun May 11 19:11:05 2008 UTC vs.
Revision 1.13 by root, Tue May 13 19:34:11 2008 UTC