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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC

1	/* solaris */	1	/* solaris */
2	#define _POSIX_PTHREAD_SEMANTICS 1	2	#define _POSIX_PTHREAD_SEMANTICS 1
3		3
4	#if __linux	4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE	5	# define _GNU_SOURCE
6	#endif	6	#endif
7		7
		8	/* just in case */
8	#define _REENTRANT 1	9	#define _REENTRANT 1
9		10
10	#include <errno.h>	11	#include <errno.h>
11		12
12	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
16	#include "autoconf/config.h"	17	#include "autoconf/config.h"
17		18
18	#include <pthread.h>	19	#include <pthread.h>
19		20
20	#include <stddef.h>	21	#include <stddef.h>
		22	#include <stdlib.h>
21	#include <errno.h>	23	#include <errno.h>
22	#include <sys/time.h>	24	#include <sys/time.h>
23	#include <sys/select.h>	25	#include <sys/select.h>
24	#include <sys/types.h>	26	#include <sys/types.h>
25	#include <sys/stat.h>	27	#include <sys/stat.h>
…		…
42	# else	44	# else
43	# error sendfile support requested but not available	45	# error sendfile support requested but not available
44	# endif	46	# endif
45	#endif	47	#endif
46		48
		49	/* number of seconds after which idle threads exit */
		50	#define IDLE_TIMEOUT 10
		51
47	/* used for struct dirent, AIX doesn't provide it */	52	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	53	#ifndef NAME_MAX
49	# define NAME_MAX 4096	54	# define NAME_MAX 4096
50	#endif	55	#endif
51		56
…		…
60	# define STACKSIZE PTHREAD_STACK_MIN	65	# define STACKSIZE PTHREAD_STACK_MIN
61	#else	66	#else
62	# define STACKSIZE 16384	67	# define STACKSIZE 16384
63	#endif	68	#endif
64		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
65	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
66	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
67		84
68	#define dBUF \	85	#define dBUF \
69	char *aio_buf; \	86	char *aio_buf; \
…		…
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \	89	UNLOCK (wrklock); \
73	if (!aio_buf) \	90	if (!aio_buf) \
74	return -1;	91	return -1;
75		92
		93	typedef SV SV8; /* byte-sv, used for argument-checking */
		94
76	enum {	95	enum {
77	REQ_QUIT,	96	REQ_QUIT,
78	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,	99	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
84	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
86	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,	106	REQ_BUSY,
88	};	107	};
89		108
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
92		111
93	typedef struct aio_cb	112	typedef struct aio_cb
94	{	113	{
95	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
96		115
97	SV *data, *callback;	116	SV *callback, *fh;
98	SV *fh, *fh2;	117	SV *sv1, *sv2;
99	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
100	Stat_t *statdata;
101	off_t offset;	119	off_t offs;
102	size_t length;	120	size_t size;
103	ssize_t result;	121	ssize_t result;
104		122
105	STRLEN dataoffset;	123	STRLEN stroffset;
106	int type;	124	int type;
107	int fd, fd2;	125	int int1, int2;
108	int errorno;	126	int errorno;
109	mode_t mode; /* open */	127	mode_t mode; /* open */
110		128
111	unsigned char flags;	129	unsigned char flags;
112	unsigned char pri;	130	unsigned char pri;
…		…
114	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;	134	} aio_cb;
117		135
118	enum {	136	enum {
119	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) */
120	};	140	};
121		141
122	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
123	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
124		144
…		…
129	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
130	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};	152	};
133		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
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135		201
136	static int started, wanted;	202	static unsigned int started, idle, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139		203
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else	206	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif	208	#endif
145		209
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))	211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148		212
149	/* worker threasd management */	213	/* worker threads management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151		215
152	typedef struct worker {	216	typedef struct worker {
153	/* locked by wrklock */	217	/* locked by wrklock */
154	struct worker *prev, *next;	218	struct worker *prev, *next;
…		…
184	wrk->prev->next = wrk->next;	248	wrk->prev->next = wrk->next;
185		249
186	free (wrk);	250	free (wrk);
187	}	251	}
188		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
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	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
192		304
193	/*	305	/*
194	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
243		355
244	abort ();	356	abort ();
245	}	357	}
246		358
247	static int poll_cb ();	359	static int poll_cb ();
248	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
249	static void req_free (aio_req req);	361	static void req_free (aio_req req);
250	static void req_cancel (aio_req req);	362	static void req_cancel (aio_req req);
251		363
252	/* must be called at most once */	364	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
…		…
273	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	386	}
275		387
276	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
277	{	389	{
		390	block_sig ();
		391
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
279	{	393	{
280	int old_len = grp->length;	394	int old_len = grp->size;
281		395
282	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
283	{	397	{
284	dSP;	398	dSP;
285		399
286	ENTER;	400	ENTER;
287	SAVETMPS;	401	SAVETMPS;
288	PUSHMARK (SP);	402	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
290	PUTBACK;	404	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	406	SPAGAIN;
293	FREETMPS;	407	FREETMPS;
294	LEAVE;	408	LEAVE;
295	}	409	}
296		410
297	/* stop if no progress has been made */	411	/* stop if no progress has been made */
298	if (old_len == grp->length)	412	if (old_len == grp->size)
299	{	413	{
300	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
301	grp->fh2 = 0;	415	grp->sv2 = 0;
302	break;	416	break;
303	}	417	}
304	}	418	}
		419
		420	unblock_sig ();
305	}	421	}
306		422
307	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
308	{	424	{
309	--grp->length;	425	--grp->size;
310		426
311	/* call feeder, if applicable */	427	/* call feeder, if applicable */
312	aio_grp_feed (grp);	428	aio_grp_feed (grp);
313		429
314	/* finish, if done */	430	/* finish, if done */
315	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
316	{	432	{
		433	block_sig ();
		434
317	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
318	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
319	}	444	}
320	}	445	}
321		446
322	static void poll_wait ()
323	{
324	fd_set rfd;
325
326	while (nreqs)
327	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
348	{	448	{
349	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
350		453
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
352	{	455	{
353	errno = req->errorno;
354
355	ENTER;	456	ENTER;
356	SAVETMPS;	457	SAVETMPS;
357	PUSHMARK (SP);	458	PUSHMARK (SP);
358	EXTEND (SP, 1);	459	EXTEND (SP, 1);
359		460
…		…
364	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
365		466
366	if (req->result >= 0)	467	if (req->result >= 0)
367	{	468	{
368	int i;	469	int i;
369	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
370	AV *av = newAV ();	471	AV *av = newAV ();
371		472
372	av_extend (av, req->result - 1);	473	av_extend (av, req->result - 1);
373		474
374	for (i = 0; i < req->result; ++i)	475	for (i = 0; i < req->result; ++i)
…		…
394	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
395	PUTBACK;	496	PUTBACK;
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
397	SPAGAIN;	498	SPAGAIN;
398		499
399	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
400
401	PUSHMARK (SP);	501	PUSHMARK (SP);
402	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
403	}	503	}
404	break;	504	break;
405		505
406	case REQ_GROUP:	506	case REQ_GROUP:
407	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
408		508
409	if (req->data)	509	if (req->sv1)
410	{	510	{
411	int i;	511	int i;
412	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
413		513
414	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
417	}	517	}
…		…
419		519
420	case REQ_NOP:	520	case REQ_NOP:
421	case REQ_BUSY:	521	case REQ_BUSY:
422	break;	522	break;
423		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
424	default:	548	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
426	break;	550	break;
427	}	551	}
428		552
		553	errno = req->errorno;
429		554
430	PUTBACK;	555	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
432	SPAGAIN;	557	SPAGAIN;
433		558
…		…
447	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
448		573
449	aio_grp_dec (grp);	574	aio_grp_dec (grp);
450	}	575	}
451		576
452	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	578	}
458		579
459	static void req_free (aio_req req)	580	static void req_free (aio_req req)
460	{	581	{
461	if (req->self)	582	if (req->self)
462	{	583	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
465	}	586	}
466		587
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472		592
473	if (req->type == REQ_READDIR)	593	if (req->flags & FLAG_PTR2_FREE)
474	free (req->data2ptr);	594	free (req->ptr2);
475		595
476	Safefree (req);	596	Safefree (req);
477	}	597	}
478		598
479	static void req_cancel_subs (aio_req grp)	599	static void req_cancel_subs (aio_req grp)
…		…
481	aio_req sub;	601	aio_req sub;
482		602
483	if (grp->type != REQ_GROUP)	603	if (grp->type != REQ_GROUP)
484	return;	604	return;
485		605
486	SvREFCNT_dec (grp->fh2);	606	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	607	grp->sv2 = 0;
488		608
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
490	req_cancel (sub);	610	req_cancel (sub);
491	}	611	}
492		612
493	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
494	{	614	{
495	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
496		616
497	req_cancel_subs (req);	617	req_cancel_subs (req);
498	}
499
500	static int poll_cb ()
501	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)
508	{
509	LOCK (reslock);
510	req = reqq_shift (&res_queue);
511
512	if (req)
513	{
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;
527
528	--nreqs;
529
530	if (req->type == REQ_QUIT)
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}
559
560	return count;
561	}	618	}
562		619
563	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
564		621
565	static void start_thread (void)	622	static void start_thread (void)
…		…
573	croak ("unable to allocate worker thread data");	630	croak ("unable to allocate worker thread data");
574		631
575	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
577	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
578		638
579	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
580		640
581	LOCK (wrklock);	641	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
583		643
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{	645	{
586	wrk->prev = &wrk_first;	646	wrk->prev = &wrk_first;
587	wrk->next = wrk_first.next;	647	wrk->next = wrk_first.next;
588	wrk_first.next->prev = wrk;	648	wrk_first.next->prev = wrk;
589	wrk_first.next = wrk;	649	wrk_first.next = wrk;
590	started++;	650	++started;
591	}	651	}
592	else	652	else
593	free (wrk);	653	free (wrk);
594		654
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);	655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);	656	UNLOCK (wrklock);
597	}	657	}
598		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
599	static void req_send (aio_req req)	671	static void req_send (aio_req req)
600	{	672	{
601	while (started < wanted && nreqs >= started)	673	block_sig ();
602	start_thread ();
603		674
604	++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;
605		696
606	LOCK (reqlock);	697	LOCK (reqlock);
607	reqq_push (&req_queue, req);	698	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);	699	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);	700	UNLOCK (reqlock);
610	}
611		701
612	static void end_thread (void)	702	LOCK (wrklock);
613	{	703	--started;
614	aio_req req;	704	UNLOCK (wrklock);
		705	}
615		706
616	Newz (0, req, 1, aio_cb);	707	static void set_max_idle (int nthreads)
617		708	{
618	req->type = REQ_QUIT;	709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
619	req->pri = PRI_MAX + PRI_BIAS;	710	max_idle = nthreads <= 0 ? 1 : nthreads;
620		711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
621	req_send (req);
622	}	712	}
623		713
624	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
625	{	715	{
626	if (wanted < nthreads)	716	if (wanted < nthreads)
627	wanted = nthreads;	717	wanted = nthreads;
628	}	718	}
629		719
630	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
631	{	721	{
632	int cur = started;
633
634	if (wanted > nthreads)	722	if (wanted > nthreads)
635	wanted = nthreads;	723	wanted = nthreads;
636		724
637	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)
638	{	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
639	end_thread ();	743	maybe_start_thread ();
640	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
641	}	749	}
		750	}
642		751
643	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 (;;)
644	{	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
645	poll_wait ();	829	poll_wait ();
646	poll_cb ();	830
		831	++maxreqs;
647	}	832	}
		833
		834	unblock_sig ();
		835	return count;
648	}	836	}
649		837
650	static void create_pipe ()	838	static void create_pipe ()
651	{	839	{
652	if (pipe (respipe))	840	if (pipe (respipe))
…		…
779	{	967	{
780	off_t sbytes;	968	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782		970
783	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
785	res = sbytes;	973	res = sbytes;
786	}	974	}
787		975
788	# elif __hpux	976	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
867	int memofs = 0;	1055	int memofs = 0;
868	int res = 0;	1056	int res = 0;
869	int errorno;	1057	int errorno;
870		1058
871	LOCK (wrklock);	1059	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);	1060	self->dirp = dirp = opendir (req->ptr1);
873	self->dbuf = u = malloc (sizeof (*u));	1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
		1063	req->ptr2 = names = malloc (memlen);
874	UNLOCK (wrklock);	1064	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877		1065
878	if (dirp && u && names)	1066	if (dirp && u && names)
879	for (;;)	1067	for (;;)
880	{	1068	{
881	errno = 0;	1069	errno = 0;
…		…
894		1082
895	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
896	{	1084	{
897	memlen *= 2;	1085	memlen *= 2;
898	LOCK (wrklock);	1086	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
900	UNLOCK (wrklock);	1088	UNLOCK (wrklock);
901		1089
902	if (!names)	1090	if (!names)
903	break;	1091	break;
904	}	1092	}
…		…
917	/*****************************************************************************/	1105	/*****************************************************************************/
918		1106
919	static void *aio_proc (void *thr_arg)	1107	static void *aio_proc (void *thr_arg)
920	{	1108	{
921	aio_req req;	1109	aio_req req;
922	int type;	1110	struct timespec ts;
923	worker *self = (worker *)thr_arg;	1111	worker *self = (worker *)thr_arg;
924		1112
925	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 (;;)
926	{	1118	{
		1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1120
927	LOCK (reqlock);	1121	LOCK (reqlock);
928		1122
929	for (;;)	1123	for (;;)
930	{	1124	{
931	self->req = req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
932		1126
933	if (req)	1127	if (req)
934	break;	1128	break;
935		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 */
936	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
937	}	1151	}
		1152
		1153	--nready;
938		1154
939	UNLOCK (reqlock);	1155	UNLOCK (reqlock);
940		1156
941	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943		1158
944	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)	1160	switch (req->type)
946	{	1161	{
947	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;
948	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;
949		1164
950	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;
951	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;
952		1167
953	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;
954	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;
955	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;
956		1171
957	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;
958	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
960	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;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
963	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;
964		1182
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
967	case REQ_READDIR: scandir_ (req, self); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
968		1186
969	case REQ_BUSY:	1187	case REQ_BUSY:
970	{	1188	{
971	struct timeval tv;	1189	struct timeval tv;
972		1190
973	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
974	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
975		1193
976	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
977	}	1195	}
978		1196
979	case REQ_GROUP:	1197	case REQ_GROUP:
980	case REQ_NOP:	1198	case REQ_NOP:
		1199	break;
		1200
981	case REQ_QUIT:	1201	case REQ_QUIT:
982	break;	1202	goto quit;
983		1203
984	default:	1204	default:
985	req->result = ENOSYS;	1205	req->result = ENOSYS;
986	break;	1206	break;
987	}	1207	}
988		1208
989	req->errorno = errno;	1209	req->errorno = errno;
990		1210
991	LOCK (reslock);	1211	LOCK (reslock);
992		1212
		1213	++npending;
		1214
993	if (!reqq_push (&res_queue, req))	1215	if (!reqq_push (&res_queue, req))
		1216	{
994	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
995	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	}
996		1224
997	self->req = 0;	1225	self->req = 0;
998	worker_clear (self);	1226	worker_clear (self);
999		1227
1000	UNLOCK (reslock);	1228	UNLOCK (reslock);
1001	}	1229	}
1002	while (type != REQ_QUIT);
1003		1230
		1231	quit:
1004	LOCK (wrklock);	1232	LOCK (wrklock);
1005	worker_free (self);	1233	worker_free (self);
1006	UNLOCK (wrklock);	1234	UNLOCK (wrklock);
1007		1235
1008	return 0;	1236	return 0;
…		…
1055		1283
1056	worker_clear (wrk);	1284	worker_clear (wrk);
1057	worker_free (wrk);	1285	worker_free (wrk);
1058	}	1286	}
1059		1287
1060	started = 0;	1288	started = 0;
		1289	idle = 0;
1061	nreqs = 0;	1290	nreqs = 0;
		1291	nready = 0;
		1292	npending = 0;
1062		1293
1063	close (respipe [0]);	1294	close (respipe [0]);
1064	close (respipe [1]);	1295	close (respipe [1]);
1065	create_pipe ();	1296	create_pipe ();
1066		1297
…		…
1093	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
1094		1325
1095	BOOT:	1326	BOOT:
1096	{	1327	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	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));
1101		1337
1102	create_pipe ();	1338	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}	1340	}
1105		1341
1106	void	1342	void
1107	min_parallel (nthreads)	1343	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
1110		1347
1111	void	1348	void
1112	max_parallel (nthreads)	1349	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	1350	PROTOTYPE: $
		1351	CODE:
		1352	max_poll_time = nseconds * AIO_TICKS;
		1353
		1354	void
		1355	min_parallel (int nthreads)
		1356	PROTOTYPE: $
		1357
		1358	void
		1359	max_parallel (int nthreads)
		1360	PROTOTYPE: $
		1361
		1362	void
		1363	max_idle (int nthreads)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	set_max_idle (nthreads);
		1367
		1368	int
		1369	max_outstanding (int maxreqs)
		1370	PROTOTYPE: $
		1371	CODE:
		1372	RETVAL = max_outstanding;
		1373	max_outstanding = maxreqs;
		1374	OUTPUT:
		1375	RETVAL
1115		1376
1116	void	1377	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118	SV * pathname	1379	SV8 * pathname
1119	int flags	1380	int flags
1120	int mode	1381	int mode
1121	SV * callback	1382	SV * callback
1122	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
1123	PPCODE:	1384	PPCODE:
1124	{	1385	{
1125	dREQ;	1386	dREQ;
1126		1387
1127	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
1128	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	1391	req->int1 = flags;
1131	req->mode = mode;	1392	req->mode = mode;
1132		1393
1133	REQ_SEND;	1394	REQ_SEND;
1134	}	1395	}
1135		1396
…		…
1145	PPCODE:	1406	PPCODE:
1146	{	1407	{
1147	dREQ;	1408	dREQ;
1148		1409
1149	req->type = ix;	1410	req->type = ix;
1150	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		1413
1153	REQ_SEND (req);	1414	REQ_SEND (req);
1154	}	1415	}
1155		1416
1156	void	1417	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh	1419	SV * fh
1159	UV offset	1420	UV offset
1160	UV length	1421	UV length
1161	SV * data	1422	SV8 * data
1162	UV dataoffset	1423	UV dataoffset
1163	SV * callback	1424	SV * callback
1164	ALIAS:	1425	ALIAS:
1165	aio_read = REQ_READ	1426	aio_read = REQ_READ
1166	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1167	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1168	PPCODE:	1429	PPCODE:
1169	{	1430	{
1170	aio_req req;
1171	STRLEN svlen;	1431	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1173		1433
1174	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1187	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1188	}	1448	}
1189	else	1449	else
1190	{	1450	{
1191	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1193	}	1453	}
1194		1454
1195	if (length < 0)	1455	if (length < 0)
1196	croak ("length must not be negative");	1456	croak ("length must not be negative");
1197		1457
1198	{	1458	{
1199	dREQ;	1459	dREQ;
1200		1460
1201	req->type = ix;	1461	req->type = ix;
1202	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1205	req->offset = offset;	1465	req->offs = offset;
1206	req->length = length;	1466	req->size = length;
1207	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1209		1470
1210	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1211	{	1472	{
1212	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1214	}	1475	}
1215		1476
1216	REQ_SEND;	1477	REQ_SEND;
1217	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		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;
1218	}	1501	}
1219		1502
1220	void	1503	void
1221	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)
1222	SV * out_fh	1505	SV * out_fh
…		…
1228	PPCODE:	1511	PPCODE:
1229	{	1512	{
1230	dREQ;	1513	dREQ;
1231		1514
1232	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	1520	req->offs = in_offset;
1238	req->length = length;	1521	req->size = length;
1239		1522
1240	REQ_SEND;	1523	REQ_SEND;
1241	}	1524	}
1242		1525
1243	void	1526	void
…		…
1250	PPCODE:	1533	PPCODE:
1251	{	1534	{
1252	dREQ;	1535	dREQ;
1253		1536
1254	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1255	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	1540	req->offs = offset;
1258	req->length = length;	1541	req->size = length;
1259		1542
1260	REQ_SEND;	1543	REQ_SEND;
1261	}	1544	}
1262		1545
1263	void	1546	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1265	SV * fh_or_path	1548	SV8 * fh_or_path
1266	SV * callback	1549	SV * callback
1267	ALIAS:	1550	ALIAS:
1268	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1269	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1270	PPCODE:	1553	PPCODE:
1271	{	1554	{
1272	dREQ;	1555	dREQ;
1273		1556
1274	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1275	if (!req->statdata)	1558	if (!req->ptr2)
1276	{	1559	{
1277	req_free (req);	1560	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1279	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1280		1565
1281	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1282	{	1567	{
1283	req->type = ix;	1568	req->type = ix;
1284	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1571	}
1287	else	1572	else
1288	{	1573	{
1289	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1577	}
1293		1578
1294	REQ_SEND;	1579	REQ_SEND;
1295	}	1580	}
1296		1581
1297	void	1582	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1299	SV * pathname	1584	SV8 * pathname
1300	SV * callback	1585	SV * callback
1301	ALIAS:	1586	ALIAS:
1302	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1303	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1304	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1305	PPCODE:	1590	PPCODE:
1306	{	1591	{
1307	dREQ;	1592	dREQ;
1308		1593
1309	req->type = ix;	1594	req->type = ix;
1310	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1311	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;
1312		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1313	REQ_SEND;	1615	REQ_SEND;
1314	}	1616	}
1315		1617
1316	void	1618	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1318	SV * oldpath	1620	SV8 * oldpath
1319	SV * newpath	1621	SV8 * newpath
1320	SV * callback	1622	SV * callback
1321	ALIAS:	1623	ALIAS:
1322	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1325	PPCODE:	1627	PPCODE:
1326	{	1628	{
1327	dREQ;	1629	dREQ;
1328		1630
1329	req->type = ix;	1631	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1332	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1334		1636
1335	REQ_SEND;	1637	REQ_SEND;
1336	}	1638	}
1337		1639
1338	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
1339	aio_busy (delay,callback=&PL_sv_undef)	1660	aio_busy (delay,callback=&PL_sv_undef)
1340	double delay	1661	double delay
1341	SV * callback	1662	SV * callback
1342	PPCODE:	1663	PPCODE:
1343	{	1664	{
1344	dREQ;	1665	dREQ;
1345		1666
1346	req->type = REQ_BUSY;	1667	req->type = REQ_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1349		1670
1350	REQ_SEND;	1671	REQ_SEND;
1351	}	1672	}
1352		1673
1353	void	1674	void
…		…
1357	PPCODE:	1678	PPCODE:
1358	{	1679	{
1359	dREQ;	1680	dREQ;
1360		1681
1361	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1362	req_send (req);	1684	req_send (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1686	}
1366		1687
1367	void	1688	void
1368	aio_nop (callback=&PL_sv_undef)	1689	aio_nop (callback=&PL_sv_undef)
1369	SV * callback	1690	SV * callback
1370	PPCODE:	1691	PPCODE:
1371	{	1692	{
1372	dREQ;	1693	dREQ;
1373		1694
1374	req->type = REQ_NOP;	1695	req->type = REQ_NOP;
1375		1696
1376	REQ_SEND;	1697	REQ_SEND;
1377	}	1698	}
1378		1699
1379	void	1700	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1701	aioreq_pri (int pri = 0)
1381	CODE:	1702	PROTOTYPE: ;$
		1703	CODE:
		1704	RETVAL = next_pri - PRI_BIAS;
		1705	if (items > 0)
		1706	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1707	if (pri < PRI_MIN) pri = PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1708	if (pri > PRI_MAX) pri = PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1709	next_pri = pri + PRI_BIAS;
		1710	}
		1711	OUTPUT:
		1712	RETVAL
1385		1713
1386	void	1714	void
1387	aioreq_nice (int nice = 0)	1715	aioreq_nice (int nice = 0)
1388	CODE:	1716	CODE:
1389	nice = next_pri - nice;	1717	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1718	if (nice < PRI_MIN) nice = PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1719	if (nice > PRI_MAX) nice = PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1720	next_pri = nice + PRI_BIAS;
1393		1721
1394	void	1722	void
1395	flush ()	1723	flush ()
1396	PROTOTYPE:	1724	PROTOTYPE:
1397	CODE:	1725	CODE:
…		…
1399	{	1727	{
1400	poll_wait ();	1728	poll_wait ();
1401	poll_cb ();	1729	poll_cb ();
1402	}	1730	}
1403		1731
1404	void	1732	int
1405	poll()	1733	poll()
1406	PROTOTYPE:	1734	PROTOTYPE:
1407	CODE:	1735	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1736	poll_wait ();
1411	poll_cb ();	1737	RETVAL = poll_cb ();
1412	}	1738	OUTPUT:
		1739	RETVAL
1413		1740
1414	int	1741	int
1415	poll_fileno()	1742	poll_fileno()
1416	PROTOTYPE:	1743	PROTOTYPE:
1417	CODE:	1744	CODE:
…		…
1429		1756
1430	void	1757	void
1431	poll_wait()	1758	poll_wait()
1432	PROTOTYPE:	1759	PROTOTYPE:
1433	CODE:	1760	CODE:
1434	if (nreqs)
1435	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	}
1436		1799
1437	int	1800	int
1438	nreqs()	1801	nreqs()
1439	PROTOTYPE:	1802	PROTOTYPE:
1440	CODE:	1803	CODE:
1441	RETVAL = nreqs;	1804	RETVAL = nreqs;
1442	OUTPUT:	1805	OUTPUT:
1443	RETVAL	1806	RETVAL
1444		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
1445	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
1446		1835
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1837
1449	void	1838	void
…		…
1464	PPCODE:	1853	PPCODE:
1465	{	1854	{
1466	int i;	1855	int i;
1467	aio_req req;	1856	aio_req req;
1468		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
1469	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1470	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");
1471		1863
1472	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1473	{	1865	{
1474	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1476		1868
1477	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1478		1870
1479	if (req)	1871	if (req)
1480	{	1872	{
1481	++grp->length;	1873	++grp->size;
1482	req->grp = grp;	1874	req->grp = grp;
1483		1875
1484	req->grp_prev = 0;	1876	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1486		1878
…		…
1500	void	1892	void
1501	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
1502	CODE:	1894	CODE:
1503	{	1895	{
1504	int i;	1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
1505	AV *av = newAV ();	1901	av = newAV ();
1506		1902
1507	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1509		1905
1510	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1512	}	1908	}
		1909
		1910	void
		1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
1513		1914
1514	void	1915	void
1515	limit (aio_req grp, int limit)	1916	limit (aio_req grp, int limit)
1516	CODE:	1917	CODE:
1517	grp->fd2 = limit;	1918	grp->int2 = limit;
1518	aio_grp_feed (grp);	1919	aio_grp_feed (grp);
1519		1920
1520	void	1921	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1923	CODE:
1523	{	1924	{
1524	SvREFCNT_dec (grp->fh2);	1925	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1926	grp->sv2 = newSVsv (callback);
1526		1927
1527	if (grp->fd2 <= 0)	1928	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1929	grp->int2 = 2;
1529		1930
1530	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1531	}	1932	}
1532		1933

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