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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 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
		55	#endif
		56
		57	#ifndef PTHREAD_STACK_MIN
		58	/* care for broken platforms, e.g. windows */
		59	# define PTHREAD_STACK_MIN 16384
50	#endif	60	#endif
51		61
52	#if __ia64	62	#if __ia64
53	# define STACKSIZE 65536	63	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN	65	# define STACKSIZE PTHREAD_STACK_MIN
56	#else	66	#else
57	# define STACKSIZE 16384	67	# define STACKSIZE 16384
58	#endif	68	#endif
59		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
60	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
62		84
63	#define dBUF \	85	#define dBUF \
64	char *aio_buf; \	86	char *aio_buf; \
…		…
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \	89	UNLOCK (wrklock); \
68	if (!aio_buf) \	90	if (!aio_buf) \
69	return -1;	91	return -1;
70		92
		93	typedef SV SV8; /* byte-sv, used for argument-checking */
		94
71	enum {	95	enum {
72	REQ_QUIT,	96	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,	99	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,	106	REQ_BUSY,
83	};	107	};
84		108
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
87		111
88	typedef struct aio_cb	112	typedef struct aio_cb
89	{	113	{
90	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
91		115
92	SV *data, *callback;	116	SV *callback, *fh;
93	SV *fh, *fh2;	117	SV *sv1, *sv2;
94	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
95	Stat_t *statdata;
96	off_t offset;	119	off_t offs;
97	size_t length;	120	size_t size;
98	ssize_t result;	121	ssize_t result;
99		122
100	STRLEN dataoffset;	123	STRLEN stroffset;
101	int type;	124	int type;
102	int fd, fd2;	125	int int1, int2;
103	int errorno;	126	int errorno;
104	mode_t mode; /* open */	127	mode_t mode; /* open */
105		128
106	unsigned char flags;	129	unsigned char flags;
107	unsigned char pri;	130	unsigned char pri;
…		…
109	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;	134	} aio_cb;
112		135
113	enum {	136	enum {
114	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) */
115	};	140	};
116		141
117	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
119		144
…		…
124	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};	152	};
128		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
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130		201
131	static int started, wanted;	202	static unsigned int started, idle, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;
134	static int respipe [2];
135		203
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else	206	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif	208	#endif
141		209
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))	211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144		212
145	/* worker threasd management */	213	/* worker threads management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147		215
148	typedef struct worker {	216	typedef struct worker {
149	/* locked by wrklock */	217	/* locked by wrklock */
150	struct worker *prev, *next;	218	struct worker *prev, *next;
…		…
180	wrk->prev->next = wrk->next;	248	wrk->prev->next = wrk->next;
181		249
182	free (wrk);	250	free (wrk);
183	}	251	}
184		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
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	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
188		304
189	/*	305	/*
190	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
238	}	354	}
239		355
240	abort ();	356	abort ();
241	}	357	}
242		358
		359	static int poll_cb ();
243	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
244	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
245		363
246	/* must be called at most once */	364	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
248	{	366	{
249	if (!req->self)	367	if (!req->self)
…		…
267	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	386	}
269		387
270	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
271	{	389	{
		390	block_sig ();
		391
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
273	{	393	{
274	int old_len = grp->length;	394	int old_len = grp->size;
275		395
276	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
277	{	397	{
278	dSP;	398	dSP;
279		399
280	ENTER;	400	ENTER;
281	SAVETMPS;	401	SAVETMPS;
282	PUSHMARK (SP);	402	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
284	PUTBACK;	404	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	406	SPAGAIN;
287	FREETMPS;	407	FREETMPS;
288	LEAVE;	408	LEAVE;
289	}	409	}
290		410
291	/* stop if no progress has been made */	411	/* stop if no progress has been made */
292	if (old_len == grp->length)	412	if (old_len == grp->size)
293	{	413	{
294	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
295	grp->fh2 = 0;	415	grp->sv2 = 0;
296	break;	416	break;
297	}	417	}
298	}	418	}
		419
		420	unblock_sig ();
299	}	421	}
300		422
301	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
302	{	424	{
303	--grp->length;	425	--grp->size;
304		426
305	/* call feeder, if applicable */	427	/* call feeder, if applicable */
306	aio_grp_feed (grp);	428	aio_grp_feed (grp);
307		429
308	/* finish, if done */	430	/* finish, if done */
309	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
310	{	432	{
		433	block_sig ();
		434
311	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
312	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
313	}	444	}
314	}	445	}
315		446
316	static void poll_wait ()
317	{
318	fd_set rfd;
319
320	while (nreqs)
321	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
342	{	448	{
343	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
344		453
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
346	{	455	{
347	errno = req->errorno;
348
349	ENTER;	456	ENTER;
350	SAVETMPS;	457	SAVETMPS;
351	PUSHMARK (SP);	458	PUSHMARK (SP);
352	EXTEND (SP, 1);	459	EXTEND (SP, 1);
353		460
…		…
358	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
359		466
360	if (req->result >= 0)	467	if (req->result >= 0)
361	{	468	{
362	int i;	469	int i;
363	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
364	AV *av = newAV ();	471	AV *av = newAV ();
365		472
366	av_extend (av, req->result - 1);	473	av_extend (av, req->result - 1);
367		474
368	for (i = 0; i < req->result; ++i)	475	for (i = 0; i < req->result; ++i)
…		…
388	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
389	PUTBACK;	496	PUTBACK;
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
391	SPAGAIN;	498	SPAGAIN;
392		499
393	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
394
395	PUSHMARK (SP);	501	PUSHMARK (SP);
396	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
397	}	503	}
398	break;	504	break;
399		505
400	case REQ_GROUP:	506	case REQ_GROUP:
401	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
402		508
403	if (req->data)	509	if (req->sv1)
404	{	510	{
405	int i;	511	int i;
406	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
407		513
408	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
411	}	517	}
…		…
413		519
414	case REQ_NOP:	520	case REQ_NOP:
415	case REQ_BUSY:	521	case REQ_BUSY:
416	break;	522	break;
417		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
418	default:	548	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
420	break;	550	break;
421	}	551	}
422		552
		553	errno = req->errorno;
423		554
424	PUTBACK;	555	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
426	SPAGAIN;	557	SPAGAIN;
427		558
…		…
441	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
442		573
443	aio_grp_dec (grp);	574	aio_grp_dec (grp);
444	}	575	}
445		576
446	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	578	}
452		579
453	static void req_free (aio_req req)	580	static void req_free (aio_req req)
454	{	581	{
455	if (req->self)	582	if (req->self)
456	{	583	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
459	}	586	}
460		587
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
464	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466		592
467	if (req->type == REQ_READDIR)	593	if (req->flags & FLAG_PTR2_FREE)
468	free (req->data2ptr);	594	free (req->ptr2);
469		595
470	Safefree (req);	596	Safefree (req);
471	}	597	}
472		598
		599	static void req_cancel_subs (aio_req grp)
		600	{
		601	aio_req sub;
		602
		603	if (grp->type != REQ_GROUP)
		604	return;
		605
		606	SvREFCNT_dec (grp->sv2);
		607	grp->sv2 = 0;
		608
		609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		610	req_cancel (sub);
		611	}
		612
473	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
474	{	614	{
475	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
476		616
477	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
478	{
479	aio_req sub;
480
481	for (sub = req->grp_first; sub; sub = sub->grp_next)
482	req_cancel (sub);
483	}
484	}
485
486	static int poll_cb ()
487	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)
494	{
495	LOCK (reslock);
496	req = reqq_shift (&res_queue);
497
498	if (req)
499	{
500	if (!res_queue.size)
501	{
502	/* read any signals sent by the worker threads */
503	char buf [32];
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}
507	}
508
509	UNLOCK (reslock);
510
511	if (!req)
512	break;
513
514	--nreqs;
515
516	if (req->type == REQ_QUIT)
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{
520	req->fd = 1; /* mark request as delayed */
521	continue;
522	}
523	else
524	{
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}
545
546	return count;
547	}	618	}
548		619
549	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
550		621
551	static void start_thread (void)	622	static void start_thread (void)
552	{	623	{
		624	sigset_t fullsigset, oldsigset;
		625	pthread_attr_t attr;
		626
553	worker *wrk = calloc (1, sizeof (worker));	627	worker *wrk = calloc (1, sizeof (worker));
554		628
555	if (!wrk)	629	if (!wrk)
556	croak ("unable to allocate worker thread data");	630	croak ("unable to allocate worker thread data");
557
558	sigset_t fullsigset, oldsigset;
559	pthread_attr_t attr;
560		631
561	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
563	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
564		638
565	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
566		640
567	LOCK (wrklock);	641	LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
569		643
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571	{	645	{
572	wrk->prev = &wrk_first;	646	wrk->prev = &wrk_first;
573	wrk->next = wrk_first.next;	647	wrk->next = wrk_first.next;
574	wrk_first.next->prev = wrk;	648	wrk_first.next->prev = wrk;
575	wrk_first.next = wrk;	649	wrk_first.next = wrk;
576	started++;	650	++started;
577	}	651	}
578	else	652	else
579	free (wrk);	653	free (wrk);
580		654
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);	655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);	656	UNLOCK (wrklock);
583	}	657	}
584		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
585	static void req_send (aio_req req)	671	static void req_send (aio_req req)
586	{	672	{
587	while (started < wanted && nreqs >= started)	673	block_sig ();
588	start_thread ();
589		674
590	++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;
591		696
592	LOCK (reqlock);	697	LOCK (reqlock);
593	reqq_push (&req_queue, req);	698	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);	699	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);	700	UNLOCK (reqlock);
596		701
597	if (nreqs > max_outstanding)	702	LOCK (wrklock);
598	for (;;)	703	--started;
599	{	704	UNLOCK (wrklock);
600	poll_cb ();
601
602	if (nreqs <= max_outstanding)
603	break;
604
605	poll_wait ();
606	}
607	}	705	}
608		706
609	static void end_thread (void)	707	static void set_max_idle (int nthreads)
610	{	708	{
611	aio_req req;	709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
612		710	max_idle = nthreads <= 0 ? 1 : nthreads;
613	Newz (0, req, 1, aio_cb);	711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
614
615	req->type = REQ_QUIT;
616	req->pri = PRI_MAX + PRI_BIAS;
617
618	req_send (req);
619	}	712	}
620		713
621	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
622	{	715	{
623	if (wanted < nthreads)	716	if (wanted < nthreads)
624	wanted = nthreads;	717	wanted = nthreads;
625	}	718	}
626		719
627	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
628	{	721	{
629	int cur = started;
630
631	if (wanted > nthreads)	722	if (wanted > nthreads)
632	wanted = nthreads;	723	wanted = nthreads;
633		724
634	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)
635	{	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
636	end_thread ();	743	maybe_start_thread ();
637	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
638	}	749	}
		750	}
639		751
640	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 (;;)
641	{	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
642	poll_wait ();	829	poll_wait ();
643	poll_cb ();	830
		831	++maxreqs;
644	}	832	}
		833
		834	unblock_sig ();
		835	return count;
645	}	836	}
646		837
647	static void create_pipe ()	838	static void create_pipe ()
648	{	839	{
649	if (pipe (respipe))	840	if (pipe (respipe))
…		…
704	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
705	# define fdatasync fsync	896	# define fdatasync fsync
706	#endif	897	#endif
707		898
708	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
709	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
710		901
711	static ssize_t readahead (int fd, off_t offset, size_t count)	902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
712	{	903	{
713	dBUF;	904	dBUF;
714		905
715	while (count > 0)	906	while (count > 0)
716	{	907	{
…		…
721	count -= len;	912	count -= len;
722	}	913	}
723		914
724	errno = 0;	915	errno = 0;
725	}	916	}
		917
726	#endif	918	#endif
727		919
728	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
729	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
730		922
…		…
775	{	967	{
776	off_t sbytes;	968	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778		970
779	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
781	res = sbytes;	973	res = sbytes;
782	}	974	}
783		975
784	# elif __hpux	976	# elif __hpux
785	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
863	int memofs = 0;	1055	int memofs = 0;
864	int res = 0;	1056	int res = 0;
865	int errorno;	1057	int errorno;
866		1058
867	LOCK (wrklock);	1059	LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);	1060	self->dirp = dirp = opendir (req->ptr1);
869	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);
870	UNLOCK (wrklock);	1064	UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873		1065
874	if (dirp && u && names)	1066	if (dirp && u && names)
875	for (;;)	1067	for (;;)
876	{	1068	{
877	errno = 0;	1069	errno = 0;
…		…
890		1082
891	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
892	{	1084	{
893	memlen *= 2;	1085	memlen *= 2;
894	LOCK (wrklock);	1086	LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
896	UNLOCK (wrklock);	1088	UNLOCK (wrklock);
897		1089
898	if (!names)	1090	if (!names)
899	break;	1091	break;
900	}	1092	}
…		…
913	/*****************************************************************************/	1105	/*****************************************************************************/
914		1106
915	static void *aio_proc (void *thr_arg)	1107	static void *aio_proc (void *thr_arg)
916	{	1108	{
917	aio_req req;	1109	aio_req req;
918	int type;	1110	struct timespec ts;
919	worker *self = (worker *)thr_arg;	1111	worker *self = (worker *)thr_arg;
920		1112
921	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 (;;)
922	{	1118	{
		1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1120
923	LOCK (reqlock);	1121	LOCK (reqlock);
924		1122
925	for (;;)	1123	for (;;)
926	{	1124	{
927	self->req = req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
928		1126
929	if (req)	1127	if (req)
930	break;	1128	break;
931		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 */
932	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
933	}	1151	}
		1152
		1153	--nready;
934		1154
935	UNLOCK (reqlock);	1155	UNLOCK (reqlock);
936		1156
937	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939		1158
940	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)	1160	switch (req->type)
942	{	1161	{
943	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;
944	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;
945		1164
946	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;
947	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;
948		1167
949	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;
950	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;
951	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;
952		1171
953	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;
954	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
956	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;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
959	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;
960		1182
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
962	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
963	case REQ_READDIR: scandir_ (req, self); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
964		1186
965	case REQ_BUSY:	1187	case REQ_BUSY:
966	{	1188	{
967	struct timeval tv;	1189	struct timeval tv;
968		1190
969	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
970	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
971		1193
972	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
973	}	1195	}
974		1196
975	case REQ_GROUP:	1197	case REQ_GROUP:
976	case REQ_NOP:	1198	case REQ_NOP:
		1199	break;
		1200
977	case REQ_QUIT:	1201	case REQ_QUIT:
978	break;	1202	goto quit;
979		1203
980	default:	1204	default:
981	req->result = ENOSYS;	1205	req->result = ENOSYS;
982	break;	1206	break;
983	}	1207	}
984		1208
985	req->errorno = errno;	1209	req->errorno = errno;
986		1210
987	LOCK (reslock);	1211	LOCK (reslock);
988		1212
		1213	++npending;
		1214
989	if (!reqq_push (&res_queue, req))	1215	if (!reqq_push (&res_queue, req))
		1216	{
990	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
991	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	}
992		1224
993	self->req = 0;	1225	self->req = 0;
994	worker_clear (self);	1226	worker_clear (self);
995		1227
996	UNLOCK (reslock);	1228	UNLOCK (reslock);
997	}	1229	}
998	while (type != REQ_QUIT);
999		1230
		1231	quit:
1000	LOCK (wrklock);	1232	LOCK (wrklock);
1001	worker_free (self);	1233	worker_free (self);
1002	UNLOCK (wrklock);	1234	UNLOCK (wrklock);
1003		1235
1004	return 0;	1236	return 0;
…		…
1051		1283
1052	worker_clear (wrk);	1284	worker_clear (wrk);
1053	worker_free (wrk);	1285	worker_free (wrk);
1054	}	1286	}
1055		1287
1056	started = 0;	1288	started = 0;
		1289	idle = 0;
1057	nreqs = 0;	1290	nreqs = 0;
		1291	nready = 0;
		1292	npending = 0;
1058		1293
1059	close (respipe [0]);	1294	close (respipe [0]);
1060	close (respipe [1]);	1295	close (respipe [1]);
1061	create_pipe ();	1296	create_pipe ();
1062		1297
…		…
1089	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
1090		1325
1091	BOOT:	1326	BOOT:
1092	{	1327	{
1093	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	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));
1097		1337
1098	create_pipe ();	1338	create_pipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}	1340	}
1101		1341
1102	void	1342	void
1103	min_parallel (nthreads)	1343	max_poll_reqs (int nreqs)
1104	int nthreads
1105	PROTOTYPE: $	1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
1106		1347
1107	void	1348	void
1108	max_parallel (nthreads)	1349	max_poll_time (double nseconds)
1109	int nthreads
1110	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);
1111		1367
1112	int	1368	int
1113	max_outstanding (nreqs)	1369	max_outstanding (int maxreqs)
1114	int nreqs	1370	PROTOTYPE: $
1115	PROTOTYPE: $
1116	CODE:	1371	CODE:
1117	RETVAL = max_outstanding;	1372	RETVAL = max_outstanding;
1118	max_outstanding = nreqs;	1373	max_outstanding = maxreqs;
		1374	OUTPUT:
		1375	RETVAL
1119		1376
1120	void	1377	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122	SV * pathname	1379	SV8 * pathname
1123	int flags	1380	int flags
1124	int mode	1381	int mode
1125	SV * callback	1382	SV * callback
1126	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
1127	PPCODE:	1384	PPCODE:
1128	{	1385	{
1129	dREQ;	1386	dREQ;
1130		1387
1131	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
1132	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
1133	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1134	req->fd = flags;	1391	req->int1 = flags;
1135	req->mode = mode;	1392	req->mode = mode;
1136		1393
1137	REQ_SEND;	1394	REQ_SEND;
1138	}	1395	}
1139		1396
…		…
1149	PPCODE:	1406	PPCODE:
1150	{	1407	{
1151	dREQ;	1408	dREQ;
1152		1409
1153	req->type = ix;	1410	req->type = ix;
1154	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156		1413
1157	REQ_SEND (req);	1414	REQ_SEND (req);
1158	}	1415	}
1159		1416
1160	void	1417	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1162	SV * fh	1419	SV * fh
1163	UV offset	1420	UV offset
1164	UV length	1421	UV length
1165	SV * data	1422	SV8 * data
1166	UV dataoffset	1423	UV dataoffset
1167	SV * callback	1424	SV * callback
1168	ALIAS:	1425	ALIAS:
1169	aio_read = REQ_READ	1426	aio_read = REQ_READ
1170	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1171	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1172	PPCODE:	1429	PPCODE:
1173	{	1430	{
1174	aio_req req;
1175	STRLEN svlen;	1431	STRLEN svlen;
1176	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1177		1433
1178	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1191	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1192	}	1448	}
1193	else	1449	else
1194	{	1450	{
1195	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1196	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1197	}	1453	}
1198		1454
1199	if (length < 0)	1455	if (length < 0)
1200	croak ("length must not be negative");	1456	croak ("length must not be negative");
1201		1457
1202	{	1458	{
1203	dREQ;	1459	dREQ;
1204		1460
1205	req->type = ix;	1461	req->type = ix;
1206	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1208	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1209	req->offset = offset;	1465	req->offs = offset;
1210	req->length = length;	1466	req->size = length;
1211	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1213		1470
1214	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1215	{	1472	{
1216	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1218	}	1475	}
1219		1476
1220	REQ_SEND;	1477	REQ_SEND;
1221	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		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;
1222	}	1501	}
1223		1502
1224	void	1503	void
1225	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)
1226	SV * out_fh	1505	SV * out_fh
…		…
1232	PPCODE:	1511	PPCODE:
1233	{	1512	{
1234	dREQ;	1513	dREQ;
1235		1514
1236	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1239	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1241	req->offset = in_offset;	1520	req->offs = in_offset;
1242	req->length = length;	1521	req->size = length;
1243		1522
1244	REQ_SEND;	1523	REQ_SEND;
1245	}	1524	}
1246		1525
1247	void	1526	void
…		…
1254	PPCODE:	1533	PPCODE:
1255	{	1534	{
1256	dREQ;	1535	dREQ;
1257		1536
1258	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1259	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1261	req->offset = offset;	1540	req->offs = offset;
1262	req->length = length;	1541	req->size = length;
1263		1542
1264	REQ_SEND;	1543	REQ_SEND;
1265	}	1544	}
1266		1545
1267	void	1546	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1269	SV * fh_or_path	1548	SV8 * fh_or_path
1270	SV * callback	1549	SV * callback
1271	ALIAS:	1550	ALIAS:
1272	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1273	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1274	PPCODE:	1553	PPCODE:
1275	{	1554	{
1276	dREQ;	1555	dREQ;
1277		1556
1278	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1279	if (!req->statdata)	1558	if (!req->ptr2)
1280	{	1559	{
1281	req_free (req);	1560	req_free (req);
1282	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1283	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1284		1565
1285	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1286	{	1567	{
1287	req->type = ix;	1568	req->type = ix;
1288	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1290	}	1571	}
1291	else	1572	else
1292	{	1573	{
1293	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1294	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}	1577	}
1297		1578
1298	REQ_SEND;	1579	REQ_SEND;
1299	}	1580	}
1300		1581
1301	void	1582	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1303	SV * pathname	1584	SV8 * pathname
1304	SV * callback	1585	SV * callback
1305	ALIAS:	1586	ALIAS:
1306	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1307	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1308	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1309	PPCODE:	1590	PPCODE:
1310	{	1591	{
1311	dREQ;	1592	dREQ;
1312		1593
1313	req->type = ix;	1594	req->type = ix;
1314	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1315	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;
1316		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1317	REQ_SEND;	1615	REQ_SEND;
1318	}	1616	}
1319		1617
1320	void	1618	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1322	SV * oldpath	1620	SV8 * oldpath
1323	SV * newpath	1621	SV8 * newpath
1324	SV * callback	1622	SV * callback
1325	ALIAS:	1623	ALIAS:
1326	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1327	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1328	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1329	PPCODE:	1627	PPCODE:
1330	{	1628	{
1331	dREQ;	1629	dREQ;
1332		1630
1333	req->type = ix;	1631	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1336	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1337	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1338		1636
1339	REQ_SEND;	1637	REQ_SEND;
1340	}	1638	}
1341		1639
1342	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
1343	aio_busy (delay,callback=&PL_sv_undef)	1660	aio_busy (delay,callback=&PL_sv_undef)
1344	double delay	1661	double delay
1345	SV * callback	1662	SV * callback
1346	PPCODE:	1663	PPCODE:
1347	{	1664	{
1348	dREQ;	1665	dREQ;
1349		1666
1350	req->type = REQ_BUSY;	1667	req->type = REQ_BUSY;
1351	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1353		1670
1354	REQ_SEND;	1671	REQ_SEND;
1355	}	1672	}
1356		1673
1357	void	1674	void
…		…
1361	PPCODE:	1678	PPCODE:
1362	{	1679	{
1363	dREQ;	1680	dREQ;
1364		1681
1365	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1366	req_send (req);	1684	req_send (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1369	}	1686	}
1370		1687
1371	void	1688	void
1372	aio_nop (callback=&PL_sv_undef)	1689	aio_nop (callback=&PL_sv_undef)
1373	SV * callback	1690	SV * callback
1374	PPCODE:	1691	PPCODE:
1375	{	1692	{
1376	dREQ;	1693	dREQ;
1377		1694
1378	req->type = REQ_NOP;	1695	req->type = REQ_NOP;
1379		1696
1380	REQ_SEND;	1697	REQ_SEND;
1381	}	1698	}
1382		1699
1383	void	1700	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1701	aioreq_pri (int pri = 0)
1385	CODE:	1702	PROTOTYPE: ;$
		1703	CODE:
		1704	RETVAL = next_pri - PRI_BIAS;
		1705	if (items > 0)
		1706	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1707	if (pri < PRI_MIN) pri = PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1708	if (pri > PRI_MAX) pri = PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1709	next_pri = pri + PRI_BIAS;
		1710	}
		1711	OUTPUT:
		1712	RETVAL
1389		1713
1390	void	1714	void
1391	aioreq_nice (int nice = 0)	1715	aioreq_nice (int nice = 0)
1392	CODE:	1716	CODE:
1393	nice = next_pri - nice;	1717	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1718	if (nice < PRI_MIN) nice = PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1719	if (nice > PRI_MAX) nice = PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1720	next_pri = nice + PRI_BIAS;
1397		1721
1398	void	1722	void
1399	flush ()	1723	flush ()
1400	PROTOTYPE:	1724	PROTOTYPE:
1401	CODE:	1725	CODE:
…		…
1403	{	1727	{
1404	poll_wait ();	1728	poll_wait ();
1405	poll_cb ();	1729	poll_cb ();
1406	}	1730	}
1407		1731
1408	void	1732	int
1409	poll()	1733	poll()
1410	PROTOTYPE:	1734	PROTOTYPE:
1411	CODE:	1735	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();	1736	poll_wait ();
1415	poll_cb ();	1737	RETVAL = poll_cb ();
1416	}	1738	OUTPUT:
		1739	RETVAL
1417		1740
1418	int	1741	int
1419	poll_fileno()	1742	poll_fileno()
1420	PROTOTYPE:	1743	PROTOTYPE:
1421	CODE:	1744	CODE:
…		…
1433		1756
1434	void	1757	void
1435	poll_wait()	1758	poll_wait()
1436	PROTOTYPE:	1759	PROTOTYPE:
1437	CODE:	1760	CODE:
1438	if (nreqs)
1439	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	}
1440		1799
1441	int	1800	int
1442	nreqs()	1801	nreqs()
1443	PROTOTYPE:	1802	PROTOTYPE:
1444	CODE:	1803	CODE:
1445	RETVAL = nreqs;	1804	RETVAL = nreqs;
1446	OUTPUT:	1805	OUTPUT:
1447	RETVAL	1806	RETVAL
1448		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
1449	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
1450		1835
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1837
1453	void	1838	void
…		…
1468	PPCODE:	1853	PPCODE:
1469	{	1854	{
1470	int i;	1855	int i;
1471	aio_req req;	1856	aio_req req;
1472		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
1473	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1474	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");
1475		1863
1476	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1477	{	1865	{
1478	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1480		1868
1481	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1482		1870
1483	if (req)	1871	if (req)
1484	{	1872	{
1485	++grp->length;	1873	++grp->size;
1486	req->grp = grp;	1874	req->grp = grp;
1487		1875
1488	req->grp_prev = 0;	1876	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1490		1878
…		…
1495	}	1883	}
1496	}	1884	}
1497	}	1885	}
1498		1886
1499	void	1887	void
		1888	cancel_subs (aio_req_ornot req)
		1889	CODE:
		1890	req_cancel_subs (req);
		1891
		1892	void
1500	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
1501	CODE:	1894	CODE:
1502	{	1895	{
1503	int i;	1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
1504	AV *av = newAV ();	1901	av = newAV ();
1505		1902
1506	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1508		1905
1509	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1511	}	1908	}
		1909
		1910	void
		1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
1512		1914
1513	void	1915	void
1514	limit (aio_req grp, int limit)	1916	limit (aio_req grp, int limit)
1515	CODE:	1917	CODE:
1516	grp->fd2 = limit;	1918	grp->int2 = limit;
1517	aio_grp_feed (grp);	1919	aio_grp_feed (grp);
1518		1920
1519	void	1921	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1923	CODE:
1522	{	1924	{
1523	SvREFCNT_dec (grp->fh2);	1925	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1926	grp->sv2 = newSVsv (callback);
1525		1927
1526	if (grp->fd2 <= 0)	1928	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1929	grp->int2 = 2;
1528		1930
1529	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1530	}	1932	}
1531		1933

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