[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC

…		…
1	/* solaris */	1	/* solaris */
2	#define _POSIX_PTHREAD_SEMANTICS 1	2	#define _POSIX_PTHREAD_SEMANTICS 1
3		3
4	#if __linux	4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE	5	# define _GNU_SOURCE
6	#endif	6	#endif
7		7
		8	/* just in case */
8	#define _REENTRANT 1	9	#define _REENTRANT 1
9		10
10	#include <errno.h>	11	#include <errno.h>
11		12
12	#include "EXTERN.h"	13	#include "EXTERN.h"
47	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	49	#ifndef NAME_MAX
49	# define NAME_MAX 4096	50	# define NAME_MAX 4096
50	#endif	51	#endif
51		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
52	#if __ia64	58	#if __ia64
53	# define STACKSIZE 65536	59	# define STACKSIZE 65536
54	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */	60	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN	61	# define STACKSIZE PTHREAD_STACK_MIN
56	#else	62	#else
57	# define STACKSIZE 16384	63	# define STACKSIZE 16384
58	#endif	64	#endif
59		65
		66	/* wether word reads are potentially non-atomic.
		67	* this is conservatice, likely most arches this runs
		68	* on have atomic word read/writes.
		69	*/
		70	#ifndef WORDREAD_UNSAFE
		71	# if __i386 \|\| __x86_64
		72	# define WORDREAD_UNSAFE 0
		73	# else
		74	# define WORDREAD_UNSAFE 1
		75	# endif
		76	#endif
		77
60	/* buffer size for various temporary buffers */	78	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	79	#define AIO_BUFSIZE 65536
62		80
63	#define dBUF \	81	#define dBUF \
		82	char *aio_buf; \
		83	LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		85	UNLOCK (wrklock); \
65	if (!aio_buf) \	86	if (!aio_buf) \
66	return -1;	87	return -1;
67
68	#define fBUF free (aio_buf)
69		88
70	enum {	89	enum {
71	REQ_QUIT,	90	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	91	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,	93	REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76	REQ_FSYNC, REQ_FDATASYNC,	95	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
78	REQ_READDIR,	97	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	98	REQ_LINK, REQ_SYMLINK,
80	REQ_GROUP, REQ_NOP,	99	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	100	REQ_BUSY,
82	};	101	};
83		102
…		…
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	145	};
127		146
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		148
130	static int started, wanted;	149	static unsigned int started, wanted;
131	static volatile int nreqs;
132	static int max_outstanding = 1<<30;
133	static int respipe [2];
134		150
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else	153	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif	155	#endif
140		156
		157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		159
		160	/* worker threads management */
		161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		162
		163	typedef struct worker {
		164	/* locked by wrklock */
		165	struct worker prev, next;
		166
		167	pthread_t tid;
		168
		169	/* locked by reslock, reqlock or wrklock */
		170	aio_req req; /* currently processed request */
		171	void *dbuf;
		172	DIR *dirp;
		173	} worker;
		174
		175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		176
		177	static void worker_clear (worker *wrk)
		178	{
		179	if (wrk->dirp)
		180	{
		181	closedir (wrk->dirp);
		182	wrk->dirp = 0;
		183	}
		184
		185	if (wrk->dbuf)
		186	{
		187	free (wrk->dbuf);
		188	wrk->dbuf = 0;
		189	}
		190	}
		191
		192	static void worker_free (worker *wrk)
		193	{
		194	wrk->next->prev = wrk->prev;
		195	wrk->prev->next = wrk->next;
		196
		197	free (wrk);
		198	}
		199
		200	static volatile unsigned int nreqs, nready, npending;
		201	static volatile unsigned int max_outstanding = 0xffffffff;
		202	static int respipe [2];
		203
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		207
		208	#if WORDREAD_UNSAFE
		209
		210	static unsigned int get_nready ()
		211	{
		212	unsigned int retval;
		213
		214	LOCK (reqlock);
		215	retval = nready;
		216	UNLOCK (reqlock);
		217
		218	return retval;
		219	}
		220
		221	static unsigned int get_npending ()
		222	{
		223	unsigned int retval;
		224
		225	LOCK (reslock);
		226	retval = npending;
		227	UNLOCK (reslock);
		228
		229	return retval;
		230	}
		231
		232	#else
		233
		234	# define get_nready() nready
		235	# define get_npending() npending
		236
		237	#endif
144		238
145	/*	239	/*
146	* a somewhat faster data structure might be nice, but	240	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	241	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	242	* per shift, the most expensive operation.
…		…
194	}	288	}
195		289
196	abort ();	290	abort ();
197	}	291	}
198		292
		293	static int poll_cb (int max);
199	static void req_invoke (aio_req req);	294	static void req_invoke (aio_req req);
200	static void req_free (aio_req req);	295	static void req_free (aio_req req);
		296	static void req_cancel (aio_req req);
201		297
202	/* must be called at most once */	298	/* must be called at most once */
203	static SV req_sv (aio_req req, const char klass)	299	static SV req_sv (aio_req req, const char klass)
204	{	300	{
205	if (!req->self)	301	if (!req->self)
…		…
267	req_invoke (grp);	363	req_invoke (grp);
268	req_free (grp);	364	req_free (grp);
269	}	365	}
270	}	366	}
271		367
272	static void poll_wait ()
273	{
274	fd_set rfd;
275
276	while (nreqs)
277	{
278	int size;
279	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)	368	static void req_invoke (aio_req req)
298	{	369	{
299	dSP;	370	dSP;
300		371
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	373	{
303	errno = req->errorno;
304
305	ENTER;	374	ENTER;
306	SAVETMPS;	375	SAVETMPS;
307	PUSHMARK (SP);	376	PUSHMARK (SP);
308	EXTEND (SP, 1);	377	EXTEND (SP, 1);
309		378
…		…
313	{	382	{
314	SV *rv = &PL_sv_undef;	383	SV *rv = &PL_sv_undef;
315		384
316	if (req->result >= 0)	385	if (req->result >= 0)
317	{	386	{
		387	int i;
318	char *buf = req->data2ptr;	388	char *buf = req->data2ptr;
319	AV *av = newAV ();	389	AV *av = newAV ();
320		390
321	while (req->result)	391	av_extend (av, req->result - 1);
		392
		393	for (i = 0; i < req->result; ++i)
322	{	394	{
323	SV *sv = newSVpv (buf, 0);	395	SV *sv = newSVpv (buf, 0);
324		396
325	av_push (av, sv);	397	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	398	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	399	}
329		400
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	401	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	402	}
332		403
…		…
372	default:	443	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	444	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	445	break;
375	}	446	}
376		447
		448	errno = req->errorno;
377		449
378	PUTBACK;	450	PUTBACK;
379	call_sv (req->callback, G_VOID \| G_EVAL);	451	call_sv (req->callback, G_VOID \| G_EVAL);
380	SPAGAIN;	452	SPAGAIN;
381		453
…		…
416	SvREFCNT_dec (req->fh);	488	SvREFCNT_dec (req->fh);
417	SvREFCNT_dec (req->fh2);	489	SvREFCNT_dec (req->fh2);
418	SvREFCNT_dec (req->callback);	490	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);	491	Safefree (req->statdata);
420		492
421	if (req->type == REQ_READDIR && req->result >= 0)	493	if (req->type == REQ_READDIR)
422	free (req->data2ptr);	494	free (req->data2ptr);
423		495
424	Safefree (req);	496	Safefree (req);
425	}	497	}
426		498
		499	static void req_cancel_subs (aio_req grp)
		500	{
		501	aio_req sub;
		502
		503	if (grp->type != REQ_GROUP)
		504	return;
		505
		506	SvREFCNT_dec (grp->fh2);
		507	grp->fh2 = 0;
		508
		509	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		510	req_cancel (sub);
		511	}
		512
427	static void req_cancel (aio_req req)	513	static void req_cancel (aio_req req)
428	{	514	{
429	req->flags \|= FLAG_CANCELLED;	515	req->flags \|= FLAG_CANCELLED;
430		516
431	if (req->type == REQ_GROUP)	517	req_cancel_subs (req);
432	{	518	}
433	aio_req sub;
434		519
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	520	static void aio_proc(void arg);
436	req_cancel (sub);	521
		522	static void start_thread (void)
		523	{
		524	sigset_t fullsigset, oldsigset;
		525	pthread_attr_t attr;
		526
		527	worker *wrk = calloc (1, sizeof (worker));
		528
		529	if (!wrk)
		530	croak ("unable to allocate worker thread data");
		531
		532	pthread_attr_init (&attr);
		533	pthread_attr_setstacksize (&attr, STACKSIZE);
		534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		535	#ifdef PTHREAD_SCOPE_PROCESS
		536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		537	#endif
		538
		539	sigfillset (&fullsigset);
		540
		541	LOCK (wrklock);
		542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		543
		544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
437	}	545	{
438	}	546	wrk->prev = &wrk_first;
		547	wrk->next = wrk_first.next;
		548	wrk_first.next->prev = wrk;
		549	wrk_first.next = wrk;
		550	++started;
		551	}
		552	else
		553	free (wrk);
439		554
		555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		556	UNLOCK (wrklock);
		557	}
		558
		559	static void maybe_start_thread ()
		560	{
		561	#if 0
		562	static struct timeval last;
		563	struct timeval diff, now;
		564	#endif
		565
		566	if (started >= wanted)
		567	return;
		568
		569	if (nready <= nreqs - get_nready () - get_npending ())
		570	return;
		571
		572	#if 0
		573	gettimeofday (&now, 0);
		574
		575	diff.tv_sec = now.tv_sec - last.tv_sec;
		576	diff.tv_usec = now.tv_usec - last.tv_usec;
		577
		578	if (diff.tv_usec < 0)
		579	{
		580	--diff.tv_sec;
		581	diff.tv_usec += 1000000;
		582	}
		583
		584	if (!diff.tv_sec && diff.tv_usec < 10000)
		585	return;
		586
		587	last = now;
		588	#endif
		589
		590	start_thread ();
		591	}
		592
		593	static void req_send (aio_req req)
		594	{
		595	++nreqs;
		596
		597	LOCK (reqlock);
		598	++nready;
		599	reqq_push (&req_queue, req);
		600	pthread_cond_signal (&reqwait);
		601	UNLOCK (reqlock);
		602
		603	maybe_start_thread ();
		604	}
		605
		606	static void end_thread (void)
		607	{
		608	aio_req req;
		609
		610	Newz (0, req, 1, aio_cb);
		611
		612	req->type = REQ_QUIT;
		613	req->pri = PRI_MAX + PRI_BIAS;
		614
		615	LOCK (reqlock);
		616	reqq_push (&req_queue, req);
		617	pthread_cond_signal (&reqwait);
		618	UNLOCK (reqlock);
		619
		620	LOCK (wrklock);
		621	--started;
		622	UNLOCK (wrklock);
		623	}
		624
		625	static void min_parallel (int nthreads)
		626	{
		627	if (wanted < nthreads)
		628	wanted = nthreads;
		629	}
		630
		631	static void max_parallel (int nthreads)
		632	{
		633	if (wanted > nthreads)
		634	wanted = nthreads;
		635
		636	while (started > wanted)
		637	end_thread ();
		638	}
		639
		640	static void poll_wait ()
		641	{
		642	fd_set rfd;
		643
		644	while (nreqs)
		645	{
		646	int size;
		647	if (WORDREAD_UNSAFE) LOCK (reslock);
		648	size = res_queue.size;
		649	if (WORDREAD_UNSAFE) UNLOCK (reslock);
		650
		651	if (size)
		652	return;
		653
		654	maybe_start_thread ();
		655
		656	FD_ZERO(&rfd);
		657	FD_SET(respipe [0], &rfd);
		658
		659	select (respipe [0] + 1, &rfd, 0, 0, 0);
		660	}
		661	}
		662
440	static int poll_cb ()	663	static int poll_cb (int max)
441	{	664	{
442	dSP;	665	dSP;
443	int count = 0;	666	int count = 0;
444	int do_croak = 0;	667	int do_croak = 0;
445	aio_req req;	668	aio_req req;
446		669
447	for (;;)	670	for (;;)
448	{	671	{
449	pthread_mutex_lock (&reslock);	672	while (max <= 0 \|\| count < max)
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{	673	{
		674	maybe_start_thread ();
		675
		676	LOCK (reslock);
		677	req = reqq_shift (&res_queue);
		678
454	if (!res_queue.size)	679	if (req)
455	{	680	{
		681	--npending;
		682
		683	if (!res_queue.size)
		684	{
456	/* read any signals sent by the worker threads */	685	/* read any signals sent by the worker threads */
457	char buf [32];	686	char buf [32];
458	while (read (respipe [0], buf, 32) == 32)	687	while (read (respipe [0], buf, 32) == 32)
		688	;
459	;	689	}
460	}	690	}
		691
		692	UNLOCK (reslock);
		693
		694	if (!req)
		695	break;
		696
		697	--nreqs;
		698
		699	if (req->type == REQ_GROUP && req->length)
		700	{
		701	req->fd = 1; /* mark request as delayed */
		702	continue;
		703	}
		704	else
		705	{
		706	if (req->type == REQ_READ)
		707	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		708
		709	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		710	SvREADONLY_off (req->data);
		711
		712	if (req->statdata)
		713	{
		714	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		715	PL_laststatval = req->result;
		716	PL_statcache = *(req->statdata);
		717	}
		718
		719	req_invoke (req);
		720
		721	count++;
		722	}
		723
		724	req_free (req);
461	}	725	}
462		726
463	pthread_mutex_unlock (&reslock);	727	if (nreqs <= max_outstanding)
464
465	if (!req)
466	break;	728	break;
467		729
468	--nreqs;	730	poll_wait ();
469		731
470	if (req->type == REQ_QUIT)	732	max = 0;
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	733	}
499		734
500	return count;	735	return count;
501	}
502
503	static void aio_proc(void arg);
504
505	static void start_thread (void)
506	{
507	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;
510
511	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}	736	}
585		737
586	static void create_pipe ()	738	static void create_pipe ()
587	{	739	{
588	if (pipe (respipe))	740	if (pipe (respipe))
…		…
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	764	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{	765	{
614	ssize_t res;	766	ssize_t res;
615	off_t ooffset;	767	off_t ooffset;
616		768
617	pthread_mutex_lock (&preadwritelock);	769	LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	770	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	771	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	772	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	773	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	774	UNLOCK (preadwritelock);
623		775
624	return res;	776	return res;
625	}	777	}
626		778
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	779	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{	780	{
629	ssize_t res;	781	ssize_t res;
630	off_t ooffset;	782	off_t ooffset;
631		783
632	pthread_mutex_lock (&preadwritelock);	784	LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	785	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	786	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	787	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	788	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	789	UNLOCK (preadwritelock);
638		790
639	return res;	791	return res;
640	}	792	}
641	#endif	793	#endif
642		794
643	#if !HAVE_FDATASYNC	795	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	796	# define fdatasync fsync
645	#endif	797	#endif
646		798
647	#if !HAVE_READAHEAD	799	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	800	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		801
650	static ssize_t readahead (int fd, off_t offset, size_t count)	802	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
651	{	803	{
652	dBUF;	804	dBUF;
653		805
654	while (count > 0)	806	while (count > 0)
655	{	807	{
…		…
658	pread (fd, aio_buf, len, offset);	810	pread (fd, aio_buf, len, offset);
659	offset += len;	811	offset += len;
660	count -= len;	812	count -= len;
661	}	813	}
662		814
663	fBUF;
664
665	errno = 0;	815	errno = 0;
666	}	816	}
		817
667	#endif	818	#endif
668		819
669	#if !HAVE_READDIR_R	820	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	821	# define readdir_r aio_readdir_r
671		822
…		…
674	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	825	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
675	{	826	{
676	struct dirent *e;	827	struct dirent *e;
677	int errorno;	828	int errorno;
678		829
679	pthread_mutex_lock (&readdirlock);	830	LOCK (readdirlock);
680		831
681	e = readdir (dirp);	832	e = readdir (dirp);
682	errorno = errno;	833	errorno = errno;
683		834
684	if (e)	835	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	838	strcpy (ent->d_name, e->d_name);
688	}	839	}
689	else	840	else
690	*res = 0;	841	*res = 0;
691		842
692	pthread_mutex_unlock (&readdirlock);	843	UNLOCK (readdirlock);
693		844
694	errno = errorno;	845	errno = errorno;
695	return e ? 0 : -1;	846	return e ? 0 : -1;
696	}	847	}
697	#endif	848	#endif
698		849
699	/* sendfile always needs emulation */	850	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	851	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
701	{	852	{
702	ssize_t res;	853	ssize_t res;
703		854
704	if (!count)	855	if (!count)
705	return 0;	856	return 0;
…		…
716	{	867	{
717	off_t sbytes;	868	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	869	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		870
720	if (res < 0 && sbytes)	871	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	872	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	873	res = sbytes;
723	}	874	}
724		875
725	# elif __hpux	876	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	877	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		933
783	offset += cnt;	934	offset += cnt;
784	res += cnt;	935	res += cnt;
785	count -= cnt;	936	count -= cnt;
786	}	937	}
787
788	fBUF;
789	}	938	}
790		939
791	return res;	940	return res;
792	}	941	}
793		942
794	/* read a full directory */	943	/* read a full directory */
795	static int scandir_ (const char path, void *namesp)	944	static void scandir_ (aio_req req, worker *self)
796	{	945	{
797	DIR *dirp;	946	DIR *dirp;
798	union	947	union
799	{	948	{
800	struct dirent d;	949	struct dirent d;
…		…
805	int memlen = 4096;	954	int memlen = 4096;
806	int memofs = 0;	955	int memofs = 0;
807	int res = 0;	956	int res = 0;
808	int errorno;	957	int errorno;
809		958
810	dirp = opendir (path);	959	LOCK (wrklock);
811	if (!dirp)	960	self->dirp = dirp = opendir (req->dataptr);
812	return -1;
813
814	u = malloc (sizeof (*u));	961	self->dbuf = u = malloc (sizeof (*u));
815	names = malloc (memlen);	962	req->data2ptr = names = malloc (memlen);
		963	UNLOCK (wrklock);
816		964
817	if (u && names)	965	if (dirp && u && names)
818	for (;;)	966	for (;;)
819	{	967	{
820	errno = 0;	968	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	969	readdir_r (dirp, &u->d, &entp);
822		970
…		…
832	res++;	980	res++;
833		981
834	while (memofs + len > memlen)	982	while (memofs + len > memlen)
835	{	983	{
836	memlen *= 2;	984	memlen *= 2;
		985	LOCK (wrklock);
837	names = realloc (names, memlen);	986	req->data2ptr = names = realloc (names, memlen);
		987	UNLOCK (wrklock);
		988
838	if (!names)	989	if (!names)
839	break;	990	break;
840	}	991	}
841		992
842	memcpy (names + memofs, name, len);	993	memcpy (names + memofs, name, len);
843	memofs += len;	994	memofs += len;
844	}	995	}
845	}	996	}
846		997
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)	998	if (errno)
852	{
853	free (names);
854	errno = errorno;
855	res = -1;	999	res = -1;
856	}	1000
857		1001	req->result = res;
858	namesp = (void )names;
859	return res;
860	}	1002	}
861		1003
862	/*****************************************************************************/	1004	/*****************************************************************************/
863		1005
864	static void aio_proc (void thr_arg)	1006	static void aio_proc (void thr_arg)
865	{	1007	{
866	aio_req req;	1008	aio_req req;
867	int type;	1009	worker self = (worker )thr_arg;
868		1010
869	do	1011	for (;;)
870	{	1012	{
871	pthread_mutex_lock (&reqlock);	1013	LOCK (reqlock);
872		1014
873	for (;;)	1015	for (;;)
874	{	1016	{
875	req = reqq_shift (&req_queue);	1017	self->req = req = reqq_shift (&req_queue);
876		1018
877	if (req)	1019	if (req)
878	break;	1020	break;
879		1021
880	pthread_cond_wait (&reqwait, &reqlock);	1022	pthread_cond_wait (&reqwait, &reqlock);
881	}	1023	}
882		1024
883	pthread_mutex_unlock (&reqlock);	1025	--nready;
		1026
		1027	UNLOCK (reqlock);
884		1028
885	errno = 0; /* strictly unnecessary */	1029	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1030
888	if (!(req->flags & FLAG_CANCELLED))	1031	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1032	switch (req->type)
890	{	1033	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1034	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1035	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
893		1036
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1037	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1038	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
896		1039
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1040	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1041	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1042	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
900		1043
…		…
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1046	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1047	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1048	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1049	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1050	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
		1051	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
908		1052
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1053	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1054	case REQ_FSYNC: req->result = fsync (req->fd); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1055	case REQ_READDIR: scandir_ (req, self); break;
912		1056
913	case REQ_BUSY:	1057	case REQ_BUSY:
914	{	1058	{
915	struct timeval tv;	1059	struct timeval tv;
916		1060
…		…
920	req->result = select (0, 0, 0, 0, &tv);	1064	req->result = select (0, 0, 0, 0, &tv);
921	}	1065	}
922		1066
923	case REQ_GROUP:	1067	case REQ_GROUP:
924	case REQ_NOP:	1068	case REQ_NOP:
		1069	break;
		1070
925	case REQ_QUIT:	1071	case REQ_QUIT:
		1072	LOCK (wrklock);
		1073	worker_free (self);
		1074	--started;
		1075	UNLOCK (wrklock);
926	break;	1076	return 0;
927		1077
928	default:	1078	default:
929	req->result = ENOSYS;	1079	req->result = ENOSYS;
930	break;	1080	break;
931	}	1081	}
932		1082
933	req->errorno = errno;	1083	req->errorno = errno;
934		1084
935	pthread_mutex_lock (&reslock);	1085	LOCK (reslock);
		1086
		1087	++npending;
936		1088
937	if (!reqq_push (&res_queue, req))	1089	if (!reqq_push (&res_queue, req))
938	/* write a dummy byte to the pipe so fh becomes ready */	1090	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1091	write (respipe [1], &respipe, 1);
940		1092
941	pthread_mutex_unlock (&reslock);	1093	self->req = 0;
942	}	1094	worker_clear (self);
943	while (type != REQ_QUIT);
944		1095
945	return 0;	1096	UNLOCK (reslock);
		1097	}
946	}	1098	}
947		1099
948	/*****************************************************************************/	1100	/*****************************************************************************/
949		1101
950	static void atfork_prepare (void)	1102	static void atfork_prepare (void)
951	{	1103	{
952	pthread_mutex_lock (&reqlock);	1104	LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1105	LOCK (reqlock);
		1106	LOCK (reslock);
954	#if !HAVE_PREADWRITE	1107	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1108	LOCK (preadwritelock);
956	#endif	1109	#endif
957	#if !HAVE_READDIR_R	1110	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1111	LOCK (readdirlock);
959	#endif	1112	#endif
960	}	1113	}
961		1114
962	static void atfork_parent (void)	1115	static void atfork_parent (void)
963	{	1116	{
964	#if !HAVE_READDIR_R	1117	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1118	UNLOCK (readdirlock);
966	#endif	1119	#endif
967	#if !HAVE_PREADWRITE	1120	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1121	UNLOCK (preadwritelock);
969	#endif	1122	#endif
970	pthread_mutex_unlock (&reslock);	1123	UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1124	UNLOCK (reqlock);
		1125	UNLOCK (wrklock);
972	}	1126	}
973		1127
974	static void atfork_child (void)	1128	static void atfork_child (void)
975	{	1129	{
976	aio_req prv;	1130	aio_req prv;
977
978	started = 0;
979		1131
980	while (prv = reqq_shift (&req_queue))	1132	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1133	req_free (prv);
982		1134
983	while (prv = reqq_shift (&res_queue))	1135	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1136	req_free (prv);
985		1137
		1138	while (wrk_first.next != &wrk_first)
		1139	{
		1140	worker *wrk = wrk_first.next;
		1141
		1142	if (wrk->req)
		1143	req_free (wrk->req);
		1144
		1145	worker_clear (wrk);
		1146	worker_free (wrk);
		1147	}
		1148
		1149	started = 0;
		1150	nreqs = 0;
		1151
986	close (respipe [0]);	1152	close (respipe [0]);
987	close (respipe [1]);	1153	close (respipe [1]);
988	create_pipe ();	1154	create_pipe ();
989		1155
990	atfork_parent ();	1156	atfork_parent ();
…		…
1016	PROTOTYPES: ENABLE	1182	PROTOTYPES: ENABLE
1017		1183
1018	BOOT:	1184	BOOT:
1019	{	1185	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1186	HV *stash = gv_stashpv ("IO::AIO", 1);
		1187
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1188	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1189	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1190	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1191	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1192	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1193	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1024		1194
1025	create_pipe ();	1195	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1196	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1027	}
1028		1197
		1198	start_thread ();
		1199	}
		1200
1029	void	1201	void
1030	min_parallel (nthreads)	1202	min_parallel (int nthreads)
1031	int nthreads
1032	PROTOTYPE: $	1203	PROTOTYPE: $
1033		1204
1034	void	1205	void
1035	max_parallel (nthreads)	1206	max_parallel (int nthreads)
1036	int nthreads
1037	PROTOTYPE: $	1207	PROTOTYPE: $
1038		1208
1039	int	1209	int
1040	max_outstanding (nreqs)	1210	max_outstanding (int maxreqs)
1041	int nreqs	1211	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1212	CODE:
1044	RETVAL = max_outstanding;	1213	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1214	max_outstanding = maxreqs;
		1215	OUTPUT:
		1216	RETVAL
1046		1217
1047	void	1218	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1219	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1049	SV * pathname	1220	SV * pathname
1050	int flags	1221	int flags
…		…
1265		1436
1266	REQ_SEND;	1437	REQ_SEND;
1267	}	1438	}
1268		1439
1269	void	1440	void
		1441	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1442	SV * pathname
		1443	SV * callback
		1444	UV mode
		1445	UV dev
		1446	PPCODE:
		1447	{
		1448	dREQ;
		1449
		1450	req->type = REQ_MKNOD;
		1451	req->data = newSVsv (pathname);
		1452	req->dataptr = SvPVbyte_nolen (req->data);
		1453	req->mode = (mode_t)mode;
		1454	req->offset = dev;
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1460	aio_busy (delay,callback=&PL_sv_undef)
1271	double delay	1461	double delay
1272	SV * callback	1462	SV * callback
1273	PPCODE:	1463	PPCODE:
1274	{	1464	{
…		…
1305	req->type = REQ_NOP;	1495	req->type = REQ_NOP;
1306		1496
1307	REQ_SEND;	1497	REQ_SEND;
1308	}	1498	}
1309		1499
1310	void	1500	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1501	aioreq_pri (int pri = 0)
1312	CODE:	1502	PROTOTYPE: ;$
		1503	CODE:
		1504	RETVAL = next_pri - PRI_BIAS;
		1505	if (items > 0)
		1506	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1507	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1508	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1509	next_pri = pri + PRI_BIAS;
		1510	}
		1511	OUTPUT:
		1512	RETVAL
1316		1513
1317	void	1514	void
1318	aioreq_nice (int nice = 0)	1515	aioreq_nice (int nice = 0)
1319	CODE:	1516	CODE:
1320	nice = next_pri - nice;	1517	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1518	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1519	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1520	next_pri = nice + PRI_BIAS;
1324		1521
1325	void	1522	void
1326	flush ()	1523	flush ()
1327	PROTOTYPE:	1524	PROTOTYPE:
1328	CODE:	1525	CODE:
1329	while (nreqs)	1526	while (nreqs)
1330	{	1527	{
1331	poll_wait ();	1528	poll_wait ();
1332	poll_cb ();	1529	poll_cb (0);
1333	}	1530	}
1334		1531
1335	void	1532	void
1336	poll()	1533	poll()
1337	PROTOTYPE:	1534	PROTOTYPE:
1338	CODE:	1535	CODE:
1339	if (nreqs)	1536	if (nreqs)
1340	{	1537	{
1341	poll_wait ();	1538	poll_wait ();
1342	poll_cb ();	1539	poll_cb (0);
1343	}	1540	}
1344		1541
1345	int	1542	int
1346	poll_fileno()	1543	poll_fileno()
1347	PROTOTYPE:	1544	PROTOTYPE:
…		…
1352		1549
1353	int	1550	int
1354	poll_cb(...)	1551	poll_cb(...)
1355	PROTOTYPE:	1552	PROTOTYPE:
1356	CODE:	1553	CODE:
1357	RETVAL = poll_cb ();	1554	RETVAL = poll_cb (0);
		1555	OUTPUT:
		1556	RETVAL
		1557
		1558	int
		1559	poll_some(int max = 0)
		1560	PROTOTYPE: $
		1561	CODE:
		1562	RETVAL = poll_cb (max);
1358	OUTPUT:	1563	OUTPUT:
1359	RETVAL	1564	RETVAL
1360		1565
1361	void	1566	void
1362	poll_wait()	1567	poll_wait()
…		…
1371	CODE:	1576	CODE:
1372	RETVAL = nreqs;	1577	RETVAL = nreqs;
1373	OUTPUT:	1578	OUTPUT:
1374	RETVAL	1579	RETVAL
1375		1580
		1581	int
		1582	nready()
		1583	PROTOTYPE:
		1584	CODE:
		1585	RETVAL = get_nready ();
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	npending()
		1591	PROTOTYPE:
		1592	CODE:
		1593	RETVAL = get_npending ();
		1594	OUTPUT:
		1595	RETVAL
		1596
1376	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
1377		1598
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1599	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1600
1380	void	1601	void
…		…
1422	}	1643	}
1423	}	1644	}
1424	}	1645	}
1425		1646
1426	void	1647	void
		1648	cancel_subs (aio_req_ornot req)
		1649	CODE:
		1650	req_cancel_subs (req);
		1651
		1652	void
1427	result (aio_req grp, ...)	1653	result (aio_req grp, ...)
1428	CODE:	1654	CODE:
1429	{	1655	{
1430	int i;	1656	int i;
		1657	AV *av;
		1658
		1659	grp->errorno = errno;
		1660
1431	AV *av = newAV ();	1661	av = newAV ();
1432		1662
1433	for (i = 1; i < items; ++i )	1663	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1664	av_push (av, newSVsv (ST (i)));
1435		1665
1436	SvREFCNT_dec (grp->data);	1666	SvREFCNT_dec (grp->data);
1437	grp->data = (SV *)av;	1667	grp->data = (SV *)av;
1438	}	1668	}
		1669
		1670	void
		1671	errno (aio_req grp, int errorno = errno)
		1672	CODE:
		1673	grp->errorno = errorno;
1439		1674
1440	void	1675	void
1441	limit (aio_req grp, int limit)	1676	limit (aio_req grp, int limit)
1442	CODE:	1677	CODE:
1443	grp->fd2 = limit;	1678	grp->fd2 = limit;

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs. Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC