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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC

…		…
17	#include "autoconf/config.h"	17	#include "autoconf/config.h"
18		18
19	#include <pthread.h>	19	#include <pthread.h>
20		20
21	#include <stddef.h>	21	#include <stddef.h>
		22	#include <stdlib.h>
22	#include <errno.h>	23	#include <errno.h>
23	#include <sys/time.h>	24	#include <sys/time.h>
24	#include <sys/select.h>	25	#include <sys/select.h>
25	#include <sys/types.h>	26	#include <sys/types.h>
26	#include <sys/stat.h>	27	#include <sys/stat.h>
…		…
43	# else	44	# else
44	# error sendfile support requested but not available	45	# error sendfile support requested but not available
45	# endif	46	# endif
46	#endif	47	#endif
47		48
		49	/* number of seconds after which idle threads exit */
		50	#define IDLE_TIMEOUT 10
		51
48	/* used for struct dirent, AIX doesn't provide it */	52	/* used for struct dirent, AIX doesn't provide it */
49	#ifndef NAME_MAX	53	#ifndef NAME_MAX
50	# define NAME_MAX 4096	54	# define NAME_MAX 4096
51	#endif	55	#endif
52		56
…		…
65		69
66	/* wether word reads are potentially non-atomic.	70	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs	71	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.	72	* on have atomic word read/writes.
69	*/	73	*/
70	#ifndef WORDREAD_UNSAFE	74	#ifndef WORDACCESS_UNSAFE
71	# if __i386 || __x86_64	75	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0	76	# define WORDACCESS_UNSAFE 0
73	# else	77	# else
74	# define WORDREAD_UNSAFE 1	78	# define WORDACCESS_UNSAFE 1
75	# endif	79	# endif
76	#endif	80	#endif
77		81
78	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
79	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
…		…
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \	89	UNLOCK (wrklock); \
86	if (!aio_buf) \	90	if (!aio_buf) \
87	return -1;	91	return -1;
88		92
		93	typedef SV SV8; /* byte-sv, used for argument-checking */
		94
89	enum {	95	enum {
90	REQ_QUIT,	96	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,	99	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
97	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
99	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,	106	REQ_BUSY,
101	};	107	};
102		108
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
105		111
106	typedef struct aio_cb	112	typedef struct aio_cb
107	{	113	{
108	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
109		115
110	SV *data, *callback;	116	SV *callback, *fh;
111	SV *fh, *fh2;	117	SV *sv1, *sv2;
112	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
113	Stat_t *statdata;
114	off_t offset;	119	off_t offs;
115	size_t length;	120	size_t size;
116	ssize_t result;	121	ssize_t result;
117		122
118	STRLEN dataoffset;	123	STRLEN stroffset;
119	int type;	124	int type;
120	int fd, fd2;	125	int int1, int2;
121	int errorno;	126	int errorno;
122	mode_t mode; /* open */	127	mode_t mode; /* open */
123		128
124	unsigned char flags;	129	unsigned char flags;
125	unsigned char pri;	130	unsigned char pri;
…		…
127	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;	134	} aio_cb;
130		135
131	enum {	136	enum {
132	FLAG_CANCELLED = 0x01,	137	FLAG_CANCELLED = 0x01, /* request was cancelled */
		138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
133	};	140	};
134		141
135	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
137		144
…		…
142	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};	152	};
146		153
		154	#define AIO_TICKS ((1000000 + 1023) >> 10)
		155
		156	static unsigned int max_poll_time = 0;
		157	static unsigned int max_poll_reqs = 0;
		158
		159	/* calculcate time difference in ~1/AIO_TICKS of a second */
		160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		161	{
		162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		164	}
		165
		166	static pthread_t main_tid;
		167	static int main_sig;
		168	static int block_sig_level;
		169
		170	void block_sig ()
		171	{
		172	sigset_t ss;
		173
		174	if (block_sig_level++)
		175	return;
		176
		177	if (!main_sig)
		178	return;
		179
		180	sigemptyset (&ss);
		181	sigaddset (&ss, main_sig);
		182	pthread_sigmask (SIG_BLOCK, &ss, 0);
		183	}
		184
		185	void unblock_sig ()
		186	{
		187	sigset_t ss;
		188
		189	if (--block_sig_level)
		190	return;
		191
		192	if (!main_sig)
		193	return;
		194
		195	sigemptyset (&ss);
		196	sigaddset (&ss, main_sig);
		197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		198	}
		199
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148		201
149	static unsigned int started, wanted;	202	static unsigned int started, idle, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153		203
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else	206	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
…		…
198	wrk->prev->next = wrk->next;	248	wrk->prev->next = wrk->next;
199		249
200	free (wrk);	250	free (wrk);
201	}	251	}
202		252
		253	static volatile unsigned int nreqs, nready, npending;
		254	static volatile unsigned int max_idle = 4;
		255	static volatile unsigned int max_outstanding = 0xffffffff;
		256	static int respipe [2];
		257
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		261
		262	#if WORDACCESS_UNSAFE
		263
		264	static unsigned int get_nready ()
		265	{
		266	unsigned int retval;
		267
		268	LOCK (reqlock);
		269	retval = nready;
		270	UNLOCK (reqlock);
		271
		272	return retval;
		273	}
		274
		275	static unsigned int get_npending ()
		276	{
		277	unsigned int retval;
		278
		279	LOCK (reslock);
		280	retval = npending;
		281	UNLOCK (reslock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_nthreads ()
		287	{
		288	unsigned int retval;
		289
		290	LOCK (wrklock);
		291	retval = started;
		292	UNLOCK (wrklock);
		293
		294	return retval;
		295	}
		296
		297	#else
		298
		299	# define get_nready() nready
		300	# define get_npending() npending
		301	# define get_nthreads() started
		302
		303	#endif
206		304
207	/*	305	/*
208	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
256	}	354	}
257		355
258	abort ();	356	abort ();
259	}	357	}
260		358
261	static int poll_cb (int max);	359	static int poll_cb ();
262	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
263	static void req_free (aio_req req);	361	static void req_free (aio_req req);
264	static void req_cancel (aio_req req);	362	static void req_cancel (aio_req req);
265		363
266	/* must be called at most once */	364	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
…		…
287	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	386	}
289		387
290	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
291	{	389	{
		390	block_sig ();
		391
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
293	{	393	{
294	int old_len = grp->length;	394	int old_len = grp->size;
295		395
296	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
297	{	397	{
298	dSP;	398	dSP;
299		399
300	ENTER;	400	ENTER;
301	SAVETMPS;	401	SAVETMPS;
302	PUSHMARK (SP);	402	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304	PUTBACK;	404	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	406	SPAGAIN;
307	FREETMPS;	407	FREETMPS;
308	LEAVE;	408	LEAVE;
309	}	409	}
310		410
311	/* stop if no progress has been made */	411	/* stop if no progress has been made */
312	if (old_len == grp->length)	412	if (old_len == grp->size)
313	{	413	{
314	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
315	grp->fh2 = 0;	415	grp->sv2 = 0;
316	break;	416	break;
317	}	417	}
318	}	418	}
		419
		420	unblock_sig ();
319	}	421	}
320		422
321	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
322	{	424	{
323	--grp->length;	425	--grp->size;
324		426
325	/* call feeder, if applicable */	427	/* call feeder, if applicable */
326	aio_grp_feed (grp);	428	aio_grp_feed (grp);
327		429
328	/* finish, if done */	430	/* finish, if done */
329	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
330	{	432	{
		433	block_sig ();
		434
331	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
332	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
333	}	444	}
334	}	445	}
335		446
336	static void poll_wait ()
337	{
338	fd_set rfd;
339
340	while (nreqs)
341	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
358	{	448	{
359	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
360		453
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{	455	{
363	ENTER;	456	ENTER;
364	SAVETMPS;	457	SAVETMPS;
…		…
372	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
373		466
374	if (req->result >= 0)	467	if (req->result >= 0)
375	{	468	{
376	int i;	469	int i;
377	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
378	AV *av = newAV ();	471	AV *av = newAV ();
379		472
380	av_extend (av, req->result - 1);	473	av_extend (av, req->result - 1);
381		474
382	for (i = 0; i < req->result; ++i)	475	for (i = 0; i < req->result; ++i)
…		…
402	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
403	PUTBACK;	496	PUTBACK;
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
405	SPAGAIN;	498	SPAGAIN;
406		499
407	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
408
409	PUSHMARK (SP);	501	PUSHMARK (SP);
410	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
411	}	503	}
412	break;	504	break;
413		505
414	case REQ_GROUP:	506	case REQ_GROUP:
415	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
416		508
417	if (req->data)	509	if (req->sv1)
418	{	510	{
419	int i;	511	int i;
420	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
421		513
422	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
425	}	517	}
…		…
427		519
428	case REQ_NOP:	520	case REQ_NOP:
429	case REQ_BUSY:	521	case REQ_BUSY:
430	break;	522	break;
431		523
		524	case REQ_READLINK:
		525	if (req->result > 0)
		526	{
		527	SvCUR_set (req->sv1, req->result);
		528	*SvEND (req->sv1) = 0;
		529	PUSHs (req->sv1);
		530	}
		531	break;
		532
		533	case REQ_STAT:
		534	case REQ_LSTAT:
		535	case REQ_FSTAT:
		536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		537	PL_laststatval = req->result;
		538	PL_statcache = *(Stat_t *)(req->ptr2);
		539	PUSHs (sv_2mortal (newSViv (req->result)));
		540	break;
		541
		542	case REQ_READ:
		543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		544	*SvEND (req->sv1) = 0;
		545	PUSHs (sv_2mortal (newSViv (req->result)));
		546	break;
		547
432	default:	548	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
434	break;	550	break;
435	}	551	}
436		552
…		…
456	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
457		573
458	aio_grp_dec (grp);	574	aio_grp_dec (grp);
459	}	575	}
460		576
461	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	578	}
467		579
468	static void req_free (aio_req req)	580	static void req_free (aio_req req)
469	{	581	{
470	if (req->self)	582	if (req->self)
471	{	583	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
474	}	586	}
475		587
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		592
482	if (req->type == REQ_READDIR)	593	if (req->flags & FLAG_PTR2_FREE)
483	free (req->data2ptr);	594	free (req->ptr2);
484		595
485	Safefree (req);	596	Safefree (req);
486	}	597	}
487		598
488	static void req_cancel_subs (aio_req grp)	599	static void req_cancel_subs (aio_req grp)
…		…
490	aio_req sub;	601	aio_req sub;
491		602
492	if (grp->type != REQ_GROUP)	603	if (grp->type != REQ_GROUP)
493	return;	604	return;
494		605
495	SvREFCNT_dec (grp->fh2);	606	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	607	grp->sv2 = 0;
497		608
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
499	req_cancel (sub);	610	req_cancel (sub);
500	}	611	}
501		612
502	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
503	{	614	{
504	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
505		616
506	req_cancel_subs (req);	617	req_cancel_subs (req);
507	}
508
509	static int poll_cb (int max)
510	{
511	dSP;
512	int count = 0;
513	int do_croak = 0;
514	aio_req req;
515
516	for (;;)
517	{
518	while (max <= 0 || count < max)
519	{
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522
523	if (req)
524	{
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;
575
576	poll_wait ();
577
578	max = 0;
579	}
580
581	return count;
582	}	618	}
583		619
584	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
585		621
586	static void start_thread (void)	622	static void start_thread (void)
…		…
594	croak ("unable to allocate worker thread data");	630	croak ("unable to allocate worker thread data");
595		631
596	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		635	#ifdef PTHREAD_SCOPE_PROCESS
		636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		637	#endif
599		638
600	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
601		640
602	LOCK (wrklock);	641	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
604		643
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{	645	{
607	wrk->prev = &wrk_first;	646	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;	647	wrk->next = wrk_first.next;
…		…
611	++started;	650	++started;
612	}	651	}
613	else	652	else
614	free (wrk);	653	free (wrk);
615		654
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);	655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);	656	UNLOCK (wrklock);
618	}	657	}
619		658
		659	static void maybe_start_thread ()
		660	{
		661	if (get_nthreads () >= wanted)
		662	return;
		663
		664	/* todo: maybe use idle here, but might be less exact */
		665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		666	return;
		667
		668	start_thread ();
		669	}
		670
620	static void req_send (aio_req req)	671	static void req_send (aio_req req)
621	{	672	{
622	while (started < wanted && nreqs >= started)	673	block_sig ();
623	start_thread ();
624		674
625	++nreqs;	675	++nreqs;
626		676
627	LOCK (reqlock);	677	LOCK (reqlock);
628	++nready;	678	++nready;
629	reqq_push (&req_queue, req);	679	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);	681	UNLOCK (reqlock);
		682
		683	unblock_sig ();
		684
		685	maybe_start_thread ();
632	}	686	}
633		687
634	static void end_thread (void)	688	static void end_thread (void)
635	{	689	{
636	aio_req req;	690	aio_req req;
…		…
638	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
639		693
640	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;	695	req->pri = PRI_MAX + PRI_BIAS;
642		696
643	req_send (req);	697	LOCK (reqlock);
		698	reqq_push (&req_queue, req);
		699	pthread_cond_signal (&reqwait);
		700	UNLOCK (reqlock);
		701
		702	LOCK (wrklock);
		703	--started;
		704	UNLOCK (wrklock);
		705	}
		706
		707	static void set_max_idle (int nthreads)
		708	{
		709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		710	max_idle = nthreads <= 0 ? 1 : nthreads;
		711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
644	}	712	}
645		713
646	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
647	{	715	{
648	if (wanted < nthreads)	716	if (wanted < nthreads)
649	wanted = nthreads;	717	wanted = nthreads;
650	}	718	}
651		719
652	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
653	{	721	{
654	int cur = started;
655
656	if (wanted > nthreads)	722	if (wanted > nthreads)
657	wanted = nthreads;	723	wanted = nthreads;
658		724
659	while (cur > wanted)	725	while (started > wanted)
		726	end_thread ();
		727	}
		728
		729	static void poll_wait ()
		730	{
		731	fd_set rfd;
		732
		733	while (nreqs)
660	{	734	{
		735	int size;
		736	if (WORDACCESS_UNSAFE) LOCK (reslock);
		737	size = res_queue.size;
		738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		739
		740	if (size)
		741	return;
		742
661	end_thread ();	743	maybe_start_thread ();
662	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
663	}	749	}
		750	}
664		751
665	while (started > wanted)	752	static int poll_cb ()
		753	{
		754	dSP;
		755	int count = 0;
		756	int maxreqs = max_poll_reqs;
		757	int do_croak = 0;
		758	struct timeval tv_start, tv_now;
		759	aio_req req;
		760
		761	if (max_poll_time)
		762	gettimeofday (&tv_start, 0);
		763
		764	block_sig ();
		765
		766	for (;;)
666	{	767	{
		768	for (;;)
		769	{
		770	maybe_start_thread ();
		771
		772	LOCK (reslock);
		773	req = reqq_shift (&res_queue);
		774
		775	if (req)
		776	{
		777	--npending;
		778
		779	if (!res_queue.size)
		780	{
		781	/* read any signals sent by the worker threads */
		782	char buf [4];
		783	while (read (respipe [0], buf, 4) == 4)
		784	;
		785	}
		786	}
		787
		788	UNLOCK (reslock);
		789
		790	if (!req)
		791	break;
		792
		793	--nreqs;
		794
		795	if (req->type == REQ_GROUP && req->size)
		796	{
		797	req->int1 = 1; /* mark request as delayed */
		798	continue;
		799	}
		800	else
		801	{
		802	if (!req_invoke (req))
		803	{
		804	req_free (req);
		805	unblock_sig ();
		806	croak (0);
		807	}
		808
		809	count++;
		810	}
		811
		812	req_free (req);
		813
		814	if (maxreqs && !--maxreqs)
		815	break;
		816
		817	if (max_poll_time)
		818	{
		819	gettimeofday (&tv_now, 0);
		820
		821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		822	break;
		823	}
		824	}
		825
		826	if (nreqs <= max_outstanding)
		827	break;
		828
667	poll_wait ();	829	poll_wait ();
668	poll_cb (0);	830
		831	++maxreqs;
669	}	832	}
		833
		834	unblock_sig ();
		835	return count;
670	}	836	}
671		837
672	static void create_pipe ()	838	static void create_pipe ()
673	{	839	{
674	if (pipe (respipe))	840	if (pipe (respipe))
…		…
889	int memofs = 0;	1055	int memofs = 0;
890	int res = 0;	1056	int res = 0;
891	int errorno;	1057	int errorno;
892		1058
893	LOCK (wrklock);	1059	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);	1060	self->dirp = dirp = opendir (req->ptr1);
895	self->dbuf = u = malloc (sizeof (*u));	1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
896	req->data2ptr = names = malloc (memlen);	1063	req->ptr2 = names = malloc (memlen);
897	UNLOCK (wrklock);	1064	UNLOCK (wrklock);
898		1065
899	if (dirp && u && names)	1066	if (dirp && u && names)
900	for (;;)	1067	for (;;)
901	{	1068	{
…		…
915		1082
916	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
917	{	1084	{
918	memlen *= 2;	1085	memlen *= 2;
919	LOCK (wrklock);	1086	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
921	UNLOCK (wrklock);	1088	UNLOCK (wrklock);
922		1089
923	if (!names)	1090	if (!names)
924	break;	1091	break;
925	}	1092	}
…		…
938	/*****************************************************************************/	1105	/*****************************************************************************/
939		1106
940	static void *aio_proc (void *thr_arg)	1107	static void *aio_proc (void *thr_arg)
941	{	1108	{
942	aio_req req;	1109	aio_req req;
943	int type;	1110	struct timespec ts;
944	worker *self = (worker *)thr_arg;	1111	worker *self = (worker *)thr_arg;
945		1112
946	do	1113	/* try to distribute timeouts somewhat evenly */
		1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1115	* (1000000000UL / 1024UL);
		1116
		1117	for (;;)
947	{	1118	{
		1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1120
948	LOCK (reqlock);	1121	LOCK (reqlock);
949		1122
950	for (;;)	1123	for (;;)
951	{	1124	{
952	self->req = req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
953		1126
954	if (req)	1127	if (req)
955	break;	1128	break;
956		1129
		1130	++idle;
		1131
		1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1133	== ETIMEDOUT)
		1134	{
		1135	if (idle > max_idle)
		1136	{
		1137	--idle;
		1138	UNLOCK (reqlock);
		1139	LOCK (wrklock);
		1140	--started;
		1141	UNLOCK (wrklock);
		1142	goto quit;
		1143	}
		1144
		1145	/* we are allowed to idle, so do so without any timeout */
957	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
958	}	1151	}
959		1152
960	--nready;	1153	--nready;
961		1154
962	UNLOCK (reqlock);	1155	UNLOCK (reqlock);
963		1156
964	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966		1158
967	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)	1160	switch (req->type)
969	{	1161	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
972		1164
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
975		1167
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
979		1171
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
987		1182
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
990	case REQ_READDIR: scandir_ (req, self); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
991		1186
992	case REQ_BUSY:	1187	case REQ_BUSY:
993	{	1188	{
994	struct timeval tv;	1189	struct timeval tv;
995		1190
996	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
997	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
998		1193
999	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
1000	}	1195	}
1001		1196
1002	case REQ_GROUP:	1197	case REQ_GROUP:
1003	case REQ_NOP:	1198	case REQ_NOP:
		1199	break;
		1200
1004	case REQ_QUIT:	1201	case REQ_QUIT:
1005	break;	1202	goto quit;
1006		1203
1007	default:	1204	default:
1008	req->result = ENOSYS;	1205	req->result = ENOSYS;
1009	break;	1206	break;
1010	}	1207	}
…		…
1014	LOCK (reslock);	1211	LOCK (reslock);
1015		1212
1016	++npending;	1213	++npending;
1017		1214
1018	if (!reqq_push (&res_queue, req))	1215	if (!reqq_push (&res_queue, req))
		1216	{
1019	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);	1218	write (respipe [1], &respipe, 1);
		1219
		1220	/* optionally signal the main thread asynchronously */
		1221	if (main_sig)
		1222	pthread_kill (main_tid, main_sig);
		1223	}
1021		1224
1022	self->req = 0;	1225	self->req = 0;
1023	worker_clear (self);	1226	worker_clear (self);
1024		1227
1025	UNLOCK (reslock);	1228	UNLOCK (reslock);
1026	}	1229	}
1027	while (type != REQ_QUIT);
1028		1230
		1231	quit:
1029	LOCK (wrklock);	1232	LOCK (wrklock);
1030	worker_free (self);	1233	worker_free (self);
1031	UNLOCK (wrklock);	1234	UNLOCK (wrklock);
1032		1235
1033	return 0;	1236	return 0;
…		…
1080		1283
1081	worker_clear (wrk);	1284	worker_clear (wrk);
1082	worker_free (wrk);	1285	worker_free (wrk);
1083	}	1286	}
1084		1287
1085	started = 0;	1288	started = 0;
		1289	idle = 0;
1086	nreqs = 0;	1290	nreqs = 0;
		1291	nready = 0;
		1292	npending = 0;
1087		1293
1088	close (respipe [0]);	1294	close (respipe [0]);
1089	close (respipe [1]);	1295	close (respipe [1]);
1090	create_pipe ();	1296	create_pipe ();
1091		1297
…		…
1118	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
1119		1325
1120	BOOT:	1326	BOOT:
1121	{	1327	{
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1126		1337
1127	create_pipe ();	1338	create_pipe ();
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1129	}	1340	}
1130		1341
1131	void	1342	void
		1343	max_poll_reqs (int nreqs)
		1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
		1347
		1348	void
		1349	max_poll_time (double nseconds)
		1350	PROTOTYPE: $
		1351	CODE:
		1352	max_poll_time = nseconds * AIO_TICKS;
		1353
		1354	void
1132	min_parallel (int nthreads)	1355	min_parallel (int nthreads)
1133	PROTOTYPE: $	1356	PROTOTYPE: $
1134		1357
1135	void	1358	void
1136	max_parallel (int nthreads)	1359	max_parallel (int nthreads)
1137	PROTOTYPE: $	1360	PROTOTYPE: $
		1361
		1362	void
		1363	max_idle (int nthreads)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	set_max_idle (nthreads);
1138		1367
1139	int	1368	int
1140	max_outstanding (int maxreqs)	1369	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1370	PROTOTYPE: $
1142	CODE:	1371	CODE:
…		…
1145	OUTPUT:	1374	OUTPUT:
1146	RETVAL	1375	RETVAL
1147		1376
1148	void	1377	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1150	SV * pathname	1379	SV8 * pathname
1151	int flags	1380	int flags
1152	int mode	1381	int mode
1153	SV * callback	1382	SV * callback
1154	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
1155	PPCODE:	1384	PPCODE:
1156	{	1385	{
1157	dREQ;	1386	dREQ;
1158		1387
1159	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
1160	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	1391	req->int1 = flags;
1163	req->mode = mode;	1392	req->mode = mode;
1164		1393
1165	REQ_SEND;	1394	REQ_SEND;
1166	}	1395	}
1167		1396
…		…
1177	PPCODE:	1406	PPCODE:
1178	{	1407	{
1179	dREQ;	1408	dREQ;
1180		1409
1181	req->type = ix;	1410	req->type = ix;
1182	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1184		1413
1185	REQ_SEND (req);	1414	REQ_SEND (req);
1186	}	1415	}
1187		1416
1188	void	1417	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1190	SV * fh	1419	SV * fh
1191	UV offset	1420	UV offset
1192	UV length	1421	UV length
1193	SV * data	1422	SV8 * data
1194	UV dataoffset	1423	UV dataoffset
1195	SV * callback	1424	SV * callback
1196	ALIAS:	1425	ALIAS:
1197	aio_read = REQ_READ	1426	aio_read = REQ_READ
1198	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1199	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1200	PPCODE:	1429	PPCODE:
1201	{	1430	{
1202	aio_req req;
1203	STRLEN svlen;	1431	STRLEN svlen;
1204	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1205		1433
1206	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1219	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1220	}	1448	}
1221	else	1449	else
1222	{	1450	{
1223	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1224	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1225	}	1453	}
1226		1454
1227	if (length < 0)	1455	if (length < 0)
1228	croak ("length must not be negative");	1456	croak ("length must not be negative");
1229		1457
1230	{	1458	{
1231	dREQ;	1459	dREQ;
1232		1460
1233	req->type = ix;	1461	req->type = ix;
1234	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1236	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1237	req->offset = offset;	1465	req->offs = offset;
1238	req->length = length;	1466	req->size = length;
1239	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1241		1470
1242	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1243	{	1472	{
1244	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1246	}	1475	}
1247		1476
1248	REQ_SEND;	1477	REQ_SEND;
1249	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		1486	PPCODE:
		1487	{
		1488	SV *data;
		1489	dREQ;
		1490
		1491	data = newSV (NAME_MAX);
		1492	SvPOK_on (data);
		1493
		1494	req->type = REQ_READLINK;
		1495	req->fh = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->fh);
		1497	req->sv1 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
1250	}	1501	}
1251		1502
1252	void	1503	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1254	SV * out_fh	1505	SV * out_fh
…		…
1260	PPCODE:	1511	PPCODE:
1261	{	1512	{
1262	dREQ;	1513	dREQ;
1263		1514
1264	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1267	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1269	req->offset = in_offset;	1520	req->offs = in_offset;
1270	req->length = length;	1521	req->size = length;
1271		1522
1272	REQ_SEND;	1523	REQ_SEND;
1273	}	1524	}
1274		1525
1275	void	1526	void
…		…
1282	PPCODE:	1533	PPCODE:
1283	{	1534	{
1284	dREQ;	1535	dREQ;
1285		1536
1286	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1287	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1289	req->offset = offset;	1540	req->offs = offset;
1290	req->length = length;	1541	req->size = length;
1291		1542
1292	REQ_SEND;	1543	REQ_SEND;
1293	}	1544	}
1294		1545
1295	void	1546	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1297	SV * fh_or_path	1548	SV8 * fh_or_path
1298	SV * callback	1549	SV * callback
1299	ALIAS:	1550	ALIAS:
1300	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1301	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1302	PPCODE:	1553	PPCODE:
1303	{	1554	{
1304	dREQ;	1555	dREQ;
1305		1556
1306	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1307	if (!req->statdata)	1558	if (!req->ptr2)
1308	{	1559	{
1309	req_free (req);	1560	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1311	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1312		1565
1313	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1314	{	1567	{
1315	req->type = ix;	1568	req->type = ix;
1316	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	1571	}
1319	else	1572	else
1320	{	1573	{
1321	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1322	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	1577	}
1325		1578
1326	REQ_SEND;	1579	REQ_SEND;
1327	}	1580	}
1328		1581
1329	void	1582	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1331	SV * pathname	1584	SV8 * pathname
1332	SV * callback	1585	SV * callback
1333	ALIAS:	1586	ALIAS:
1334	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1335	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1336	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1337	PPCODE:	1590	PPCODE:
1338	{	1591	{
1339	dREQ;	1592	dREQ;
1340		1593
1341	req->type = ix;	1594	req->type = ix;
1342	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1596	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
		1603	SV8 * pathname
		1604	UV mode
		1605	SV * callback
		1606	PPCODE:
		1607	{
		1608	dREQ;
1344		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1345	REQ_SEND;	1615	REQ_SEND;
1346	}	1616	}
1347		1617
1348	void	1618	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1350	SV * oldpath	1620	SV8 * oldpath
1351	SV * newpath	1621	SV8 * newpath
1352	SV * callback	1622	SV * callback
1353	ALIAS:	1623	ALIAS:
1354	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1355	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1356	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1357	PPCODE:	1627	PPCODE:
1358	{	1628	{
1359	dREQ;	1629	dREQ;
1360		1630
1361	req->type = ix;	1631	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1364	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1365	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1366		1636
1367	REQ_SEND;	1637	REQ_SEND;
1368	}	1638	}
1369		1639
1370	void	1640	void
		1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1642	SV8 * pathname
		1643	UV mode
		1644	UV dev
		1645	SV * callback
		1646	PPCODE:
		1647	{
		1648	dREQ;
		1649
		1650	req->type = REQ_MKNOD;
		1651	req->sv1 = newSVsv (pathname);
		1652	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1653	req->mode = (mode_t)mode;
		1654	req->offs = dev;
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1660	aio_busy (delay,callback=&PL_sv_undef)
1372	double delay	1661	double delay
1373	SV * callback	1662	SV * callback
1374	PPCODE:	1663	PPCODE:
1375	{	1664	{
1376	dREQ;	1665	dREQ;
1377		1666
1378	req->type = REQ_BUSY;	1667	req->type = REQ_BUSY;
1379	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1381		1670
1382	REQ_SEND;	1671	REQ_SEND;
1383	}	1672	}
1384		1673
1385	void	1674	void
…		…
1389	PPCODE:	1678	PPCODE:
1390	{	1679	{
1391	dREQ;	1680	dREQ;
1392		1681
1393	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1394	req_send (req);	1684	req_send (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397	}	1686	}
1398		1687
1399	void	1688	void
1400	aio_nop (callback=&PL_sv_undef)	1689	aio_nop (callback=&PL_sv_undef)
1401	SV * callback	1690	SV * callback
1402	PPCODE:	1691	PPCODE:
1403	{	1692	{
1404	dREQ;	1693	dREQ;
1405		1694
1406	req->type = REQ_NOP;	1695	req->type = REQ_NOP;
…		…
1435	PROTOTYPE:	1724	PROTOTYPE:
1436	CODE:	1725	CODE:
1437	while (nreqs)	1726	while (nreqs)
1438	{	1727	{
1439	poll_wait ();	1728	poll_wait ();
1440	poll_cb (0);	1729	poll_cb ();
1441	}	1730	}
1442		1731
1443	void	1732	int
1444	poll()	1733	poll()
1445	PROTOTYPE:	1734	PROTOTYPE:
1446	CODE:	1735	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();	1736	poll_wait ();
1450	poll_cb (0);	1737	RETVAL = poll_cb ();
1451	}	1738	OUTPUT:
		1739	RETVAL
1452		1740
1453	int	1741	int
1454	poll_fileno()	1742	poll_fileno()
1455	PROTOTYPE:	1743	PROTOTYPE:
1456	CODE:	1744	CODE:
…		…
1460		1748
1461	int	1749	int
1462	poll_cb(...)	1750	poll_cb(...)
1463	PROTOTYPE:	1751	PROTOTYPE:
1464	CODE:	1752	CODE:
1465	RETVAL = poll_cb (0);	1753	RETVAL = poll_cb ();
1466	OUTPUT:
1467	RETVAL
1468
1469	int
1470	poll_some(int max = 0)
1471	PROTOTYPE: $
1472	CODE:
1473	RETVAL = poll_cb (max);
1474	OUTPUT:	1754	OUTPUT:
1475	RETVAL	1755	RETVAL
1476		1756
1477	void	1757	void
1478	poll_wait()	1758	poll_wait()
1479	PROTOTYPE:	1759	PROTOTYPE:
1480	CODE:	1760	CODE:
1481	if (nreqs)
1482	poll_wait ();	1761	poll_wait ();
		1762
		1763	void
		1764	setsig (int signum = SIGIO)
		1765	PROTOTYPE: ;$
		1766	CODE:
		1767	{
		1768	if (block_sig_level)
		1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1770
		1771	LOCK (reslock);
		1772	main_tid = pthread_self ();
		1773	main_sig = signum;
		1774	UNLOCK (reslock);
		1775
		1776	if (main_sig && npending)
		1777	pthread_kill (main_tid, main_sig);
		1778	}
		1779
		1780	void
		1781	aio_block (SV *cb)
		1782	PROTOTYPE: &
		1783	PPCODE:
		1784	{
		1785	int count;
		1786
		1787	block_sig ();
		1788	PUSHMARK (SP);
		1789	PUTBACK;
		1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1791	SPAGAIN;
		1792	unblock_sig ();
		1793
		1794	if (SvTRUE (ERRSV))
		1795	croak (0);
		1796
		1797	XSRETURN (count);
		1798	}
1483		1799
1484	int	1800	int
1485	nreqs()	1801	nreqs()
1486	PROTOTYPE:	1802	PROTOTYPE:
1487	CODE:	1803	CODE:
…		…
1491		1807
1492	int	1808	int
1493	nready()	1809	nready()
1494	PROTOTYPE:	1810	PROTOTYPE:
1495	CODE:	1811	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1812	RETVAL = get_nready ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1813	OUTPUT:
1500	RETVAL	1814	RETVAL
1501		1815
1502	int	1816	int
1503	npending()	1817	npending()
1504	PROTOTYPE:	1818	PROTOTYPE:
1505	CODE:	1819	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);
1507	RETVAL = npending;	1820	RETVAL = get_npending ();
		1821	OUTPUT:
		1822	RETVAL
		1823
		1824	int
		1825	nthreads()
		1826	PROTOTYPE:
		1827	CODE:
		1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1829	RETVAL = started;
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1509	OUTPUT:	1831	OUTPUT:
1510	RETVAL	1832	RETVAL
1511		1833
1512	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
1513		1835
…		…
1531	PPCODE:	1853	PPCODE:
1532	{	1854	{
1533	int i;	1855	int i;
1534	aio_req req;	1856	aio_req req;
1535		1857
		1858	if (main_sig && !block_sig_level)
		1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1860
1536	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1863
1539	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1540	{	1865	{
1541	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1543		1868
1544	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1545		1870
1546	if (req)	1871	if (req)
1547	{	1872	{
1548	++grp->length;	1873	++grp->size;
1549	req->grp = grp;	1874	req->grp = grp;
1550		1875
1551	req->grp_prev = 0;	1876	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1553		1878
…		…
1576	av = newAV ();	1901	av = newAV ();
1577		1902
1578	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1580		1905
1581	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1583	}	1908	}
1584		1909
1585	void	1910	void
1586	errno (aio_req grp, int errorno = errno)	1911	errno (aio_req grp, int errorno = errno)
1587	CODE:	1912	CODE:
1588	grp->errorno = errorno;	1913	grp->errorno = errorno;
1589		1914
1590	void	1915	void
1591	limit (aio_req grp, int limit)	1916	limit (aio_req grp, int limit)
1592	CODE:	1917	CODE:
1593	grp->fd2 = limit;	1918	grp->int2 = limit;
1594	aio_grp_feed (grp);	1919	aio_grp_feed (grp);
1595		1920
1596	void	1921	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1923	CODE:
1599	{	1924	{
1600	SvREFCNT_dec (grp->fh2);	1925	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1926	grp->sv2 = newSVsv (callback);
1602		1927
1603	if (grp->fd2 <= 0)	1928	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1929	grp->int2 = 2;
1605		1930
1606	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1607	}	1932	}
1608		1933

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