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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 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
…		…
61	# define STACKSIZE PTHREAD_STACK_MIN	65	# define STACKSIZE PTHREAD_STACK_MIN
62	#else	66	#else
63	# define STACKSIZE 16384	67	# define STACKSIZE 16384
64	#endif	68	#endif
65		69
		70	/* wether word reads are potentially non-atomic.
		71	* this is conservatice, likely most arches this runs
		72	* on have atomic word read/writes.
		73	*/
		74	#ifndef WORDACCESS_UNSAFE
		75	# if __i386 || __x86_64
		76	# define WORDACCESS_UNSAFE 0
		77	# else
		78	# define WORDACCESS_UNSAFE 1
		79	# endif
		80	#endif
		81
66	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
67	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
68		84
69	#define dBUF \	85	#define dBUF \
70	char *aio_buf; \	86	char *aio_buf; \
…		…
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \	89	UNLOCK (wrklock); \
74	if (!aio_buf) \	90	if (!aio_buf) \
75	return -1;	91	return -1;
76		92
		93	typedef SV SV8; /* byte-sv, used for argument-checking */
		94
77	enum {	95	enum {
78	REQ_QUIT,	96	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,	99	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
85	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
87	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,	106	REQ_BUSY,
89	};	107	};
90		108
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
93		111
94	typedef struct aio_cb	112	typedef struct aio_cb
95	{	113	{
96	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
97		115
98	SV *data, *callback;	116	SV *callback, *fh;
99	SV *fh, *fh2;	117	SV *sv1, *sv2;
100	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
101	Stat_t *statdata;
102	off_t offset;	119	off_t offs;
103	size_t length;	120	size_t size;
104	ssize_t result;	121	ssize_t result;
105		122
106	STRLEN dataoffset;	123	STRLEN stroffset;
107	int type;	124	int type;
108	int fd, fd2;	125	int int1, int2;
109	int errorno;	126	int errorno;
110	mode_t mode; /* open */	127	mode_t mode; /* open */
111		128
112	unsigned char flags;	129	unsigned char flags;
113	unsigned char pri;	130	unsigned char pri;
…		…
115	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;	134	} aio_cb;
118		135
119	enum {	136	enum {
120	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) */
121	};	140	};
122		141
123	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
124	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
125		144
…		…
130	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};	152	};
134		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
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136		201
137	static unsigned int started, wanted;	202	static unsigned int started, idle, wanted;
138	static volatile unsigned int nreqs;
139	static volatile unsigned int max_outstanding = 0xffffffff;
140	static int respipe [2];
141		203
142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144	#else	206	#else
145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
…		…
186	wrk->prev->next = wrk->next;	248	wrk->prev->next = wrk->next;
187		249
188	free (wrk);	250	free (wrk);
189	}	251	}
190		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
191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
193	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
194		304
195	/*	305	/*
196	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
197	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
198	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
244	}	354	}
245		355
246	abort ();	356	abort ();
247	}	357	}
248		358
249	static int poll_cb (int max);	359	static int poll_cb ();
250	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
251	static void req_free (aio_req req);	361	static void req_free (aio_req req);
252	static void req_cancel (aio_req req);	362	static void req_cancel (aio_req req);
253		363
254	/* must be called at most once */	364	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
…		…
275	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	386	}
277		387
278	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
279	{	389	{
		390	block_sig ();
		391
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
281	{	393	{
282	int old_len = grp->length;	394	int old_len = grp->size;
283		395
284	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
285	{	397	{
286	dSP;	398	dSP;
287		399
288	ENTER;	400	ENTER;
289	SAVETMPS;	401	SAVETMPS;
290	PUSHMARK (SP);	402	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
292	PUTBACK;	404	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	406	SPAGAIN;
295	FREETMPS;	407	FREETMPS;
296	LEAVE;	408	LEAVE;
297	}	409	}
298		410
299	/* stop if no progress has been made */	411	/* stop if no progress has been made */
300	if (old_len == grp->length)	412	if (old_len == grp->size)
301	{	413	{
302	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
303	grp->fh2 = 0;	415	grp->sv2 = 0;
304	break;	416	break;
305	}	417	}
306	}	418	}
		419
		420	unblock_sig ();
307	}	421	}
308		422
309	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
310	{	424	{
311	--grp->length;	425	--grp->size;
312		426
313	/* call feeder, if applicable */	427	/* call feeder, if applicable */
314	aio_grp_feed (grp);	428	aio_grp_feed (grp);
315		429
316	/* finish, if done */	430	/* finish, if done */
317	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
318	{	432	{
		433	block_sig ();
		434
319	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
320	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
321	}	444	}
322	}	445	}
323		446
324	static void poll_wait ()
325	{
326	fd_set rfd;
327
328	while (nreqs)
329	{
330	int size;
331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332	LOCK (reslock);
333	#endif
334	size = res_queue.size;
335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336	UNLOCK (reslock);
337	#endif
338
339	if (size)
340	return;
341
342	FD_ZERO(&rfd);
343	FD_SET(respipe [0], &rfd);
344
345	select (respipe [0] + 1, &rfd, 0, 0, 0);
346	}
347	}
348
349	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
350	{	448	{
351	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
352		453
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
354	{	455	{
355	errno = req->errorno;
356
357	ENTER;	456	ENTER;
358	SAVETMPS;	457	SAVETMPS;
359	PUSHMARK (SP);	458	PUSHMARK (SP);
360	EXTEND (SP, 1);	459	EXTEND (SP, 1);
361		460
…		…
366	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
367		466
368	if (req->result >= 0)	467	if (req->result >= 0)
369	{	468	{
370	int i;	469	int i;
371	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
372	AV *av = newAV ();	471	AV *av = newAV ();
373		472
374	av_extend (av, req->result - 1);	473	av_extend (av, req->result - 1);
375		474
376	for (i = 0; i < req->result; ++i)	475	for (i = 0; i < req->result; ++i)
…		…
396	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
397	PUTBACK;	496	PUTBACK;
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
399	SPAGAIN;	498	SPAGAIN;
400		499
401	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
402
403	PUSHMARK (SP);	501	PUSHMARK (SP);
404	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
405	}	503	}
406	break;	504	break;
407		505
408	case REQ_GROUP:	506	case REQ_GROUP:
409	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
410		508
411	if (req->data)	509	if (req->sv1)
412	{	510	{
413	int i;	511	int i;
414	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
415		513
416	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
419	}	517	}
…		…
421		519
422	case REQ_NOP:	520	case REQ_NOP:
423	case REQ_BUSY:	521	case REQ_BUSY:
424	break;	522	break;
425		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
426	default:	548	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
428	break;	550	break;
429	}	551	}
430		552
		553	errno = req->errorno;
431		554
432	PUTBACK;	555	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
434	SPAGAIN;	557	SPAGAIN;
435		558
…		…
449	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
450		573
451	aio_grp_dec (grp);	574	aio_grp_dec (grp);
452	}	575	}
453		576
454	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
455	{
456	req_free (req);
457	croak (0);
458	}
459	}	578	}
460		579
461	static void req_free (aio_req req)	580	static void req_free (aio_req req)
462	{	581	{
463	if (req->self)	582	if (req->self)
464	{	583	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
467	}	586	}
468		587
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
472	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474		592
475	if (req->type == REQ_READDIR)	593	if (req->flags & FLAG_PTR2_FREE)
476	free (req->data2ptr);	594	free (req->ptr2);
477		595
478	Safefree (req);	596	Safefree (req);
479	}	597	}
480		598
481	static void req_cancel_subs (aio_req grp)	599	static void req_cancel_subs (aio_req grp)
…		…
483	aio_req sub;	601	aio_req sub;
484		602
485	if (grp->type != REQ_GROUP)	603	if (grp->type != REQ_GROUP)
486	return;	604	return;
487		605
488	SvREFCNT_dec (grp->fh2);	606	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	607	grp->sv2 = 0;
490		608
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
492	req_cancel (sub);	610	req_cancel (sub);
493	}	611	}
494		612
495	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
496	{	614	{
497	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
498		616
499	req_cancel_subs (req);	617	req_cancel_subs (req);
500	}
501
502	static int poll_cb (int max)
503	{
504	dSP;
505	int count = 0;
506	int do_croak = 0;
507	aio_req req;
508
509	for (;;)
510	{
511	while (max <= 0 || count < max)
512	{
513	LOCK (reslock);
514	req = reqq_shift (&res_queue);
515
516	if (req)
517	{
518	if (!res_queue.size)
519	{
520	/* read any signals sent by the worker threads */
521	char buf [32];
522	while (read (respipe [0], buf, 32) == 32)
523	;
524	}
525	}
526
527	UNLOCK (reslock);
528
529	if (!req)
530	break;
531
532	--nreqs;
533
534	if (req->type == REQ_QUIT)
535	--started;
536	else if (req->type == REQ_GROUP && req->length)
537	{
538	req->fd = 1; /* mark request as delayed */
539	continue;
540	}
541	else
542	{
543	if (req->type == REQ_READ)
544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547	SvREADONLY_off (req->data);
548
549	if (req->statdata)
550	{
551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552	PL_laststatval = req->result;
553	PL_statcache = *(req->statdata);
554	}
555
556	req_invoke (req);
557
558	count++;
559	}
560
561	req_free (req);
562	}
563
564	if (nreqs <= max_outstanding)
565	break;
566
567	poll_wait ();
568
569	max = 0;
570	}
571
572	return count;
573	}	618	}
574		619
575	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
576		621
577	static void start_thread (void)	622	static void start_thread (void)
…		…
585	croak ("unable to allocate worker thread data");	630	croak ("unable to allocate worker thread data");
586		631
587	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
589	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
590		638
591	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
592		640
593	LOCK (wrklock);	641	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
595		643
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{	645	{
598	wrk->prev = &wrk_first;	646	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;	647	wrk->next = wrk_first.next;
…		…
602	++started;	650	++started;
603	}	651	}
604	else	652	else
605	free (wrk);	653	free (wrk);
606		654
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);	655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);	656	UNLOCK (wrklock);
609	}	657	}
610		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
611	static void req_send (aio_req req)	671	static void req_send (aio_req req)
612	{	672	{
613	while (started < wanted && nreqs >= started)	673	block_sig ();
614	start_thread ();
615		674
616	++nreqs;	675	++nreqs;
		676
		677	LOCK (reqlock);
		678	++nready;
		679	reqq_push (&req_queue, req);
		680	pthread_cond_signal (&reqwait);
		681	UNLOCK (reqlock);
		682
		683	unblock_sig ();
		684
		685	maybe_start_thread ();
		686	}
		687
		688	static void end_thread (void)
		689	{
		690	aio_req req;
		691
		692	Newz (0, req, 1, aio_cb);
		693
		694	req->type = REQ_QUIT;
		695	req->pri = PRI_MAX + PRI_BIAS;
617		696
618	LOCK (reqlock);	697	LOCK (reqlock);
619	reqq_push (&req_queue, req);	698	reqq_push (&req_queue, req);
620	pthread_cond_signal (&reqwait);	699	pthread_cond_signal (&reqwait);
621	UNLOCK (reqlock);	700	UNLOCK (reqlock);
622	}
623		701
624	static void end_thread (void)	702	LOCK (wrklock);
625	{	703	--started;
626	aio_req req;	704	UNLOCK (wrklock);
		705	}
627		706
628	Newz (0, req, 1, aio_cb);	707	static void set_max_idle (int nthreads)
629		708	{
630	req->type = REQ_QUIT;	709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
631	req->pri = PRI_MAX + PRI_BIAS;	710	max_idle = nthreads <= 0 ? 1 : nthreads;
632		711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
633	req_send (req);
634	}	712	}
635		713
636	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
637	{	715	{
638	if (wanted < nthreads)	716	if (wanted < nthreads)
639	wanted = nthreads;	717	wanted = nthreads;
640	}	718	}
641		719
642	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
643	{	721	{
644	int cur = started;
645
646	if (wanted > nthreads)	722	if (wanted > nthreads)
647	wanted = nthreads;	723	wanted = nthreads;
648		724
649	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)
650	{	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
651	end_thread ();	743	maybe_start_thread ();
652	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
653	}	749	}
		750	}
654		751
655	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 (;;)
656	{	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
657	poll_wait ();	829	poll_wait ();
658	poll_cb (0);	830
		831	++maxreqs;
659	}	832	}
		833
		834	unblock_sig ();
		835	return count;
660	}	836	}
661		837
662	static void create_pipe ()	838	static void create_pipe ()
663	{	839	{
664	if (pipe (respipe))	840	if (pipe (respipe))
…		…
879	int memofs = 0;	1055	int memofs = 0;
880	int res = 0;	1056	int res = 0;
881	int errorno;	1057	int errorno;
882		1058
883	LOCK (wrklock);	1059	LOCK (wrklock);
884	self->dirp = dirp = opendir (req->dataptr);	1060	self->dirp = dirp = opendir (req->ptr1);
885	self->dbuf = u = malloc (sizeof (*u));	1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
886	req->data2ptr = names = malloc (memlen);	1063	req->ptr2 = names = malloc (memlen);
887	UNLOCK (wrklock);	1064	UNLOCK (wrklock);
888		1065
889	if (dirp && u && names)	1066	if (dirp && u && names)
890	for (;;)	1067	for (;;)
891	{	1068	{
…		…
905		1082
906	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
907	{	1084	{
908	memlen *= 2;	1085	memlen *= 2;
909	LOCK (wrklock);	1086	LOCK (wrklock);
910	req->data2ptr = names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
911	UNLOCK (wrklock);	1088	UNLOCK (wrklock);
912		1089
913	if (!names)	1090	if (!names)
914	break;	1091	break;
915	}	1092	}
…		…
928	/*****************************************************************************/	1105	/*****************************************************************************/
929		1106
930	static void *aio_proc (void *thr_arg)	1107	static void *aio_proc (void *thr_arg)
931	{	1108	{
932	aio_req req;	1109	aio_req req;
933	int type;	1110	struct timespec ts;
934	worker *self = (worker *)thr_arg;	1111	worker *self = (worker *)thr_arg;
935		1112
936	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 (;;)
937	{	1118	{
		1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1120
938	LOCK (reqlock);	1121	LOCK (reqlock);
939		1122
940	for (;;)	1123	for (;;)
941	{	1124	{
942	self->req = req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
943		1126
944	if (req)	1127	if (req)
945	break;	1128	break;
946		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 */
947	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
948	}	1151	}
		1152
		1153	--nready;
949		1154
950	UNLOCK (reqlock);	1155	UNLOCK (reqlock);
951		1156
952	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
953	type = req->type; /* remember type for QUIT check */
954		1158
955	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
956	switch (type)	1160	switch (req->type)
957	{	1161	{
958	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;
959	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;
960		1164
961	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;
962	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;
963		1167
964	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;
965	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;
966	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;
967		1171
968	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;
969	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
971	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;
972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
974	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;
975		1182
976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
977	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
978	case REQ_READDIR: scandir_ (req, self); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
979		1186
980	case REQ_BUSY:	1187	case REQ_BUSY:
981	{	1188	{
982	struct timeval tv;	1189	struct timeval tv;
983		1190
984	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
985	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
986		1193
987	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
988	}	1195	}
989		1196
990	case REQ_GROUP:	1197	case REQ_GROUP:
991	case REQ_NOP:	1198	case REQ_NOP:
		1199	break;
		1200
992	case REQ_QUIT:	1201	case REQ_QUIT:
993	break;	1202	goto quit;
994		1203
995	default:	1204	default:
996	req->result = ENOSYS;	1205	req->result = ENOSYS;
997	break;	1206	break;
998	}	1207	}
999		1208
1000	req->errorno = errno;	1209	req->errorno = errno;
1001		1210
1002	LOCK (reslock);	1211	LOCK (reslock);
1003		1212
		1213	++npending;
		1214
1004	if (!reqq_push (&res_queue, req))	1215	if (!reqq_push (&res_queue, req))
		1216	{
1005	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
1006	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	}
1007		1224
1008	self->req = 0;	1225	self->req = 0;
1009	worker_clear (self);	1226	worker_clear (self);
1010		1227
1011	UNLOCK (reslock);	1228	UNLOCK (reslock);
1012	}	1229	}
1013	while (type != REQ_QUIT);
1014		1230
		1231	quit:
1015	LOCK (wrklock);	1232	LOCK (wrklock);
1016	worker_free (self);	1233	worker_free (self);
1017	UNLOCK (wrklock);	1234	UNLOCK (wrklock);
1018		1235
1019	return 0;	1236	return 0;
…		…
1066		1283
1067	worker_clear (wrk);	1284	worker_clear (wrk);
1068	worker_free (wrk);	1285	worker_free (wrk);
1069	}	1286	}
1070		1287
1071	started = 0;	1288	started = 0;
		1289	idle = 0;
1072	nreqs = 0;	1290	nreqs = 0;
		1291	nready = 0;
		1292	npending = 0;
1073		1293
1074	close (respipe [0]);	1294	close (respipe [0]);
1075	close (respipe [1]);	1295	close (respipe [1]);
1076	create_pipe ();	1296	create_pipe ();
1077		1297
…		…
1104	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
1105		1325
1106	BOOT:	1326	BOOT:
1107	{	1327	{
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1111	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));
1112		1337
1113	create_pipe ();	1338	create_pipe ();
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1115	}	1340	}
1116		1341
1117	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
1118	min_parallel (int nthreads)	1355	min_parallel (int nthreads)
1119	PROTOTYPE: $	1356	PROTOTYPE: $
1120		1357
1121	void	1358	void
1122	max_parallel (int nthreads)	1359	max_parallel (int nthreads)
1123	PROTOTYPE: $	1360	PROTOTYPE: $
		1361
		1362	void
		1363	max_idle (int nthreads)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	set_max_idle (nthreads);
1124		1367
1125	int	1368	int
1126	max_outstanding (int maxreqs)	1369	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	1370	PROTOTYPE: $
1128	CODE:	1371	CODE:
…		…
1131	OUTPUT:	1374	OUTPUT:
1132	RETVAL	1375	RETVAL
1133		1376
1134	void	1377	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1136	SV * pathname	1379	SV8 * pathname
1137	int flags	1380	int flags
1138	int mode	1381	int mode
1139	SV * callback	1382	SV * callback
1140	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
1141	PPCODE:	1384	PPCODE:
1142	{	1385	{
1143	dREQ;	1386	dREQ;
1144		1387
1145	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
1146	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1148	req->fd = flags;	1391	req->int1 = flags;
1149	req->mode = mode;	1392	req->mode = mode;
1150		1393
1151	REQ_SEND;	1394	REQ_SEND;
1152	}	1395	}
1153		1396
…		…
1163	PPCODE:	1406	PPCODE:
1164	{	1407	{
1165	dREQ;	1408	dREQ;
1166		1409
1167	req->type = ix;	1410	req->type = ix;
1168	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1170		1413
1171	REQ_SEND (req);	1414	REQ_SEND (req);
1172	}	1415	}
1173		1416
1174	void	1417	void
1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1176	SV * fh	1419	SV * fh
1177	UV offset	1420	UV offset
1178	UV length	1421	UV length
1179	SV * data	1422	SV8 * data
1180	UV dataoffset	1423	UV dataoffset
1181	SV * callback	1424	SV * callback
1182	ALIAS:	1425	ALIAS:
1183	aio_read = REQ_READ	1426	aio_read = REQ_READ
1184	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1185	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1186	PPCODE:	1429	PPCODE:
1187	{	1430	{
1188	aio_req req;
1189	STRLEN svlen;	1431	STRLEN svlen;
1190	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1191		1433
1192	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1205	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1206	}	1448	}
1207	else	1449	else
1208	{	1450	{
1209	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1210	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1211	}	1453	}
1212		1454
1213	if (length < 0)	1455	if (length < 0)
1214	croak ("length must not be negative");	1456	croak ("length must not be negative");
1215		1457
1216	{	1458	{
1217	dREQ;	1459	dREQ;
1218		1460
1219	req->type = ix;	1461	req->type = ix;
1220	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1222	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1223	req->offset = offset;	1465	req->offs = offset;
1224	req->length = length;	1466	req->size = length;
1225	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1227		1470
1228	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1229	{	1472	{
1230	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1232	}	1475	}
1233		1476
1234	REQ_SEND;	1477	REQ_SEND;
1235	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		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;
1236	}	1501	}
1237		1502
1238	void	1503	void
1239	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)
1240	SV * out_fh	1505	SV * out_fh
…		…
1246	PPCODE:	1511	PPCODE:
1247	{	1512	{
1248	dREQ;	1513	dREQ;
1249		1514
1250	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1251	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1253	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1255	req->offset = in_offset;	1520	req->offs = in_offset;
1256	req->length = length;	1521	req->size = length;
1257		1522
1258	REQ_SEND;	1523	REQ_SEND;
1259	}	1524	}
1260		1525
1261	void	1526	void
…		…
1268	PPCODE:	1533	PPCODE:
1269	{	1534	{
1270	dREQ;	1535	dREQ;
1271		1536
1272	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1273	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1275	req->offset = offset;	1540	req->offs = offset;
1276	req->length = length;	1541	req->size = length;
1277		1542
1278	REQ_SEND;	1543	REQ_SEND;
1279	}	1544	}
1280		1545
1281	void	1546	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1283	SV * fh_or_path	1548	SV8 * fh_or_path
1284	SV * callback	1549	SV * callback
1285	ALIAS:	1550	ALIAS:
1286	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1287	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1288	PPCODE:	1553	PPCODE:
1289	{	1554	{
1290	dREQ;	1555	dREQ;
1291		1556
1292	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1293	if (!req->statdata)	1558	if (!req->ptr2)
1294	{	1559	{
1295	req_free (req);	1560	req_free (req);
1296	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1297	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1298		1565
1299	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1300	{	1567	{
1301	req->type = ix;	1568	req->type = ix;
1302	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1303	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1304	}	1571	}
1305	else	1572	else
1306	{	1573	{
1307	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1308	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1310	}	1577	}
1311		1578
1312	REQ_SEND;	1579	REQ_SEND;
1313	}	1580	}
1314		1581
1315	void	1582	void
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1317	SV * pathname	1584	SV8 * pathname
1318	SV * callback	1585	SV * callback
1319	ALIAS:	1586	ALIAS:
1320	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1321	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1322	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1323	PPCODE:	1590	PPCODE:
1324	{	1591	{
1325	dREQ;	1592	dREQ;
1326		1593
1327	req->type = ix;	1594	req->type = ix;
1328	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1329	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;
1330		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1331	REQ_SEND;	1615	REQ_SEND;
1332	}	1616	}
1333		1617
1334	void	1618	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1336	SV * oldpath	1620	SV8 * oldpath
1337	SV * newpath	1621	SV8 * newpath
1338	SV * callback	1622	SV * callback
1339	ALIAS:	1623	ALIAS:
1340	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1341	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1342	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1343	PPCODE:	1627	PPCODE:
1344	{	1628	{
1345	dREQ;	1629	dREQ;
1346		1630
1347	req->type = ix;	1631	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1350	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1351	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1352		1636
1353	REQ_SEND;	1637	REQ_SEND;
1354	}	1638	}
1355		1639
1356	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
1357	aio_busy (delay,callback=&PL_sv_undef)	1660	aio_busy (delay,callback=&PL_sv_undef)
1358	double delay	1661	double delay
1359	SV * callback	1662	SV * callback
1360	PPCODE:	1663	PPCODE:
1361	{	1664	{
1362	dREQ;	1665	dREQ;
1363		1666
1364	req->type = REQ_BUSY;	1667	req->type = REQ_BUSY;
1365	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1367		1670
1368	REQ_SEND;	1671	REQ_SEND;
1369	}	1672	}
1370		1673
1371	void	1674	void
…		…
1375	PPCODE:	1678	PPCODE:
1376	{	1679	{
1377	dREQ;	1680	dREQ;
1378		1681
1379	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1380	req_send (req);	1684	req_send (req);
1381
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1383	}	1686	}
1384		1687
1385	void	1688	void
1386	aio_nop (callback=&PL_sv_undef)	1689	aio_nop (callback=&PL_sv_undef)
1387	SV * callback	1690	SV * callback
1388	PPCODE:	1691	PPCODE:
1389	{	1692	{
1390	dREQ;	1693	dREQ;
1391		1694
1392	req->type = REQ_NOP;	1695	req->type = REQ_NOP;
1393		1696
1394	REQ_SEND;	1697	REQ_SEND;
1395	}	1698	}
1396		1699
1397	void	1700	int
1398	aioreq_pri (int pri = DEFAULT_PRI)	1701	aioreq_pri (int pri = 0)
1399	CODE:	1702	PROTOTYPE: ;$
		1703	CODE:
		1704	RETVAL = next_pri - PRI_BIAS;
		1705	if (items > 0)
		1706	{
1400	if (pri < PRI_MIN) pri = PRI_MIN;	1707	if (pri < PRI_MIN) pri = PRI_MIN;
1401	if (pri > PRI_MAX) pri = PRI_MAX;	1708	if (pri > PRI_MAX) pri = PRI_MAX;
1402	next_pri = pri + PRI_BIAS;	1709	next_pri = pri + PRI_BIAS;
		1710	}
		1711	OUTPUT:
		1712	RETVAL
1403		1713
1404	void	1714	void
1405	aioreq_nice (int nice = 0)	1715	aioreq_nice (int nice = 0)
1406	CODE:	1716	CODE:
1407	nice = next_pri - nice;	1717	nice = next_pri - nice;
1408	if (nice < PRI_MIN) nice = PRI_MIN;	1718	if (nice < PRI_MIN) nice = PRI_MIN;
1409	if (nice > PRI_MAX) nice = PRI_MAX;	1719	if (nice > PRI_MAX) nice = PRI_MAX;
1410	next_pri = nice + PRI_BIAS;	1720	next_pri = nice + PRI_BIAS;
1411		1721
1412	void	1722	void
1413	flush ()	1723	flush ()
1414	PROTOTYPE:	1724	PROTOTYPE:
1415	CODE:	1725	CODE:
1416	while (nreqs)	1726	while (nreqs)
1417	{	1727	{
1418	poll_wait ();	1728	poll_wait ();
1419	poll_cb (0);	1729	poll_cb ();
1420	}	1730	}
1421		1731
1422	void	1732	int
1423	poll()	1733	poll()
1424	PROTOTYPE:	1734	PROTOTYPE:
1425	CODE:	1735	CODE:
1426	if (nreqs)
1427	{
1428	poll_wait ();	1736	poll_wait ();
1429	poll_cb (0);	1737	RETVAL = poll_cb ();
1430	}	1738	OUTPUT:
		1739	RETVAL
1431		1740
1432	int	1741	int
1433	poll_fileno()	1742	poll_fileno()
1434	PROTOTYPE:	1743	PROTOTYPE:
1435	CODE:	1744	CODE:
…		…
1439		1748
1440	int	1749	int
1441	poll_cb(...)	1750	poll_cb(...)
1442	PROTOTYPE:	1751	PROTOTYPE:
1443	CODE:	1752	CODE:
1444	RETVAL = poll_cb (0);	1753	RETVAL = poll_cb ();
1445	OUTPUT:
1446	RETVAL
1447
1448	int
1449	poll_some(int max = 0)
1450	PROTOTYPE: $
1451	CODE:
1452	RETVAL = poll_cb (max);
1453	OUTPUT:	1754	OUTPUT:
1454	RETVAL	1755	RETVAL
1455		1756
1456	void	1757	void
1457	poll_wait()	1758	poll_wait()
1458	PROTOTYPE:	1759	PROTOTYPE:
1459	CODE:	1760	CODE:
1460	if (nreqs)
1461	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	}
1462		1799
1463	int	1800	int
1464	nreqs()	1801	nreqs()
1465	PROTOTYPE:	1802	PROTOTYPE:
1466	CODE:	1803	CODE:
1467	RETVAL = nreqs;	1804	RETVAL = nreqs;
1468	OUTPUT:	1805	OUTPUT:
1469	RETVAL	1806	RETVAL
1470		1807
		1808	int
		1809	nready()
		1810	PROTOTYPE:
		1811	CODE:
		1812	RETVAL = get_nready ();
		1813	OUTPUT:
		1814	RETVAL
		1815
		1816	int
		1817	npending()
		1818	PROTOTYPE:
		1819	CODE:
		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;
		1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1831	OUTPUT:
		1832	RETVAL
		1833
1471	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
1472		1835
1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474		1837
1475	void	1838	void
…		…
1490	PPCODE:	1853	PPCODE:
1491	{	1854	{
1492	int i;	1855	int i;
1493	aio_req req;	1856	aio_req req;
1494		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
1495	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1496	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");
1497		1863
1498	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1499	{	1865	{
1500	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1502		1868
1503	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1504		1870
1505	if (req)	1871	if (req)
1506	{	1872	{
1507	++grp->length;	1873	++grp->size;
1508	req->grp = grp;	1874	req->grp = grp;
1509		1875
1510	req->grp_prev = 0;	1876	req->grp_prev = 0;
1511	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1512		1878
…		…
1526	void	1892	void
1527	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
1528	CODE:	1894	CODE:
1529	{	1895	{
1530	int i;	1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
1531	AV *av = newAV ();	1901	av = newAV ();
1532		1902
1533	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1534	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1535		1905
1536	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1537	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1538	}	1908	}
		1909
		1910	void
		1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
1539		1914
1540	void	1915	void
1541	limit (aio_req grp, int limit)	1916	limit (aio_req grp, int limit)
1542	CODE:	1917	CODE:
1543	grp->fd2 = limit;	1918	grp->int2 = limit;
1544	aio_grp_feed (grp);	1919	aio_grp_feed (grp);
1545		1920
1546	void	1921	void
1547	feed (aio_req grp, SV *callback=&PL_sv_undef)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1548	CODE:	1923	CODE:
1549	{	1924	{
1550	SvREFCNT_dec (grp->fh2);	1925	SvREFCNT_dec (grp->sv2);
1551	grp->fh2 = newSVsv (callback);	1926	grp->sv2 = newSVsv (callback);
1552		1927
1553	if (grp->fd2 <= 0)	1928	if (grp->int2 <= 0)
1554	grp->fd2 = 2;	1929	grp->int2 = 2;
1555		1930
1556	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1557	}	1932	}
1558		1933

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