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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC

1	/* solaris */	1	/* solaris */
2	#define _POSIX_PTHREAD_SEMANTICS 1	2	#define _POSIX_PTHREAD_SEMANTICS 1
3		3
4	#if __linux	4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE	5	# define _GNU_SOURCE
6	#endif	6	#endif
7		7
		8	/* just in case */
8	#define _REENTRANT 1	9	#define _REENTRANT 1
9		10
10	#include <errno.h>	11	#include <errno.h>
11		12
12	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
42	# else	43	# else
43	# error sendfile support requested but not available	44	# error sendfile support requested but not available
44	# endif	45	# endif
45	#endif	46	#endif
46		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
47	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	52	#ifndef NAME_MAX
49	# define NAME_MAX 4096	53	# define NAME_MAX 4096
		54	#endif
		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
50	#endif	59	#endif
51		60
52	#if __ia64	61	#if __ia64
53	# define STACKSIZE 65536	62	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN	64	# define STACKSIZE PTHREAD_STACK_MIN
56	#else	65	#else
57	# define STACKSIZE 16384	66	# define STACKSIZE 16384
58	#endif	67	#endif
59		68
		69	/* wether word reads are potentially non-atomic.
		70	* this is conservatice, likely most arches this runs
		71	* on have atomic word read/writes.
		72	*/
		73	#ifndef WORDACCESS_UNSAFE
		74	# if __i386 || __x86_64
		75	# define WORDACCESS_UNSAFE 0
		76	# else
		77	# define WORDACCESS_UNSAFE 1
		78	# endif
		79	#endif
		80
60	/* buffer size for various temporary buffers */	81	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	82	#define AIO_BUFSIZE 65536
62		83
63	#define dBUF \	84	#define dBUF \
64	char *aio_buf; \	85	char *aio_buf; \
65	LOCK (wrklock); \	86	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \	88	UNLOCK (wrklock); \
68	if (!aio_buf) \	89	if (!aio_buf) \
69	return -1;	90	return -1;
		91
		92	typedef SV SV8; /* byte-sv, used for argument-checking */
70		93
71	enum {	94	enum {
72	REQ_QUIT,	95	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,	96	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,	98	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,	100	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,	102	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,	103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,	104	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,	105	REQ_BUSY,
83	};	106	};
84		107
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	108	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
87		110
88	typedef struct aio_cb	111	typedef struct aio_cb
89	{	112	{
90	struct aio_cb *volatile next;	113	struct aio_cb *volatile next;
91		114
92	SV *data, *callback;	115	SV *callback, *fh;
93	SV *fh, *fh2;	116	SV *sv1, *sv2;
94	void *dataptr, *data2ptr;	117	void *ptr1, *ptr2;
95	Stat_t *statdata;
96	off_t offset;	118	off_t offs;
97	size_t length;	119	size_t size;
98	ssize_t result;	120	ssize_t result;
99		121
100	STRLEN dataoffset;	122	STRLEN stroffset;
101	int type;	123	int type;
102	int fd, fd2;	124	int int1, int2;
103	int errorno;	125	int errorno;
104	mode_t mode; /* open */	126	mode_t mode; /* open */
105		127
106	unsigned char flags;	128	unsigned char flags;
107	unsigned char pri;	129	unsigned char pri;
…		…
109	SV *self; /* the perl counterpart of this request, if any */	131	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;	133	} aio_cb;
112		134
113	enum {	135	enum {
114	FLAG_CANCELLED = 0x01,	136	FLAG_CANCELLED = 0x01, /* request was cancelled */
		137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
115	};	139	};
116		140
117	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
119		143
…		…
124	DEFAULT_PRI = 0,	148	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,	149	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};	151	};
128		152
		153	#define AIO_TICKS ((1000000 + 1023) >> 10)
		154
		155	static unsigned int max_poll_time = 0;
		156	static unsigned int max_poll_reqs = 0;
		157
		158	/* calculcate time difference in ~1/AIO_TICKS of a second */
		159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		160	{
		161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		163	}
		164
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130		166
131	static int started, wanted;	167	static unsigned int started, idle, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;
134	static int respipe [2];
135		168
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else	171	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif	173	#endif
141		174
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))	176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144		177
145	/* worker threasd management */	178	/* worker threads management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147		180
148	typedef struct worker {	181	typedef struct worker {
149	/* locked by wrklock */	182	/* locked by wrklock */
150	struct worker *prev, *next;	183	struct worker *prev, *next;
…		…
180	wrk->prev->next = wrk->next;	213	wrk->prev->next = wrk->next;
181		214
182	free (wrk);	215	free (wrk);
183	}	216	}
184		217
		218	static volatile unsigned int nreqs, nready, npending;
		219	static volatile unsigned int max_idle = 4;
		220	static volatile unsigned int max_outstanding = 0xffffffff;
		221	static int respipe [2];
		222
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		226
		227	#if WORDACCESS_UNSAFE
		228
		229	static unsigned int get_nready ()
		230	{
		231	unsigned int retval;
		232
		233	LOCK (reqlock);
		234	retval = nready;
		235	UNLOCK (reqlock);
		236
		237	return retval;
		238	}
		239
		240	static unsigned int get_npending ()
		241	{
		242	unsigned int retval;
		243
		244	LOCK (reslock);
		245	retval = npending;
		246	UNLOCK (reslock);
		247
		248	return retval;
		249	}
		250
		251	static unsigned int get_nthreads ()
		252	{
		253	unsigned int retval;
		254
		255	LOCK (wrklock);
		256	retval = started;
		257	UNLOCK (wrklock);
		258
		259	return retval;
		260	}
		261
		262	#else
		263
		264	# define get_nready() nready
		265	# define get_npending() npending
		266	# define get_nthreads() started
		267
		268	#endif
188		269
189	/*	270	/*
190	* a somewhat faster data structure might be nice, but	271	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns	272	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.	273	* per shift, the most expensive operation.
…		…
238	}	319	}
239		320
240	abort ();	321	abort ();
241	}	322	}
242		323
		324	static int poll_cb ();
243	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	326	static void req_free (aio_req req);
245	static void req_cancel (aio_req req);	327	static void req_cancel (aio_req req);
246		328
247	/* must be called at most once */	329	/* must be called at most once */
…		…
268	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	351	}
270		352
271	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
272	{	354	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
274	{	356	{
275	int old_len = grp->length;	357	int old_len = grp->size;
276		358
277	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
278	{	360	{
279	dSP;	361	dSP;
280		362
281	ENTER;	363	ENTER;
282	SAVETMPS;	364	SAVETMPS;
283	PUSHMARK (SP);	365	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
285	PUTBACK;	367	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	369	SPAGAIN;
288	FREETMPS;	370	FREETMPS;
289	LEAVE;	371	LEAVE;
290	}	372	}
291		373
292	/* stop if no progress has been made */	374	/* stop if no progress has been made */
293	if (old_len == grp->length)	375	if (old_len == grp->size)
294	{	376	{
295	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
296	grp->fh2 = 0;	378	grp->sv2 = 0;
297	break;	379	break;
298	}	380	}
299	}	381	}
300	}	382	}
301		383
302	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
303	{	385	{
304	--grp->length;	386	--grp->size;
305		387
306	/* call feeder, if applicable */	388	/* call feeder, if applicable */
307	aio_grp_feed (grp);	389	aio_grp_feed (grp);
308		390
309	/* finish, if done */	391	/* finish, if done */
310	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
311	{	393	{
312	req_invoke (grp);	394	req_invoke (grp);
313	req_free (grp);	395	req_free (grp);
314	}	396	}
315	}	397	}
316		398
317	static void poll_wait ()
318	{
319	fd_set rfd;
320
321	while (nreqs)
322	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)	399	static void req_invoke (aio_req req)
343	{	400	{
344	dSP;	401	dSP;
		402
		403	if (req->flags & FLAG_SV1_RO_OFF)
		404	SvREADONLY_off (req->sv1);
345		405
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{	407	{
348	errno = req->errorno;
349
350	ENTER;	408	ENTER;
351	SAVETMPS;	409	SAVETMPS;
352	PUSHMARK (SP);	410	PUSHMARK (SP);
353	EXTEND (SP, 1);	411	EXTEND (SP, 1);
354		412
…		…
359	SV *rv = &PL_sv_undef;	417	SV *rv = &PL_sv_undef;
360		418
361	if (req->result >= 0)	419	if (req->result >= 0)
362	{	420	{
363	int i;	421	int i;
364	char *buf = req->data2ptr;	422	char *buf = req->ptr2;
365	AV *av = newAV ();	423	AV *av = newAV ();
366		424
367	av_extend (av, req->result - 1);	425	av_extend (av, req->result - 1);
368		426
369	for (i = 0; i < req->result; ++i)	427	for (i = 0; i < req->result; ++i)
…		…
389	PUSHs (sv_2mortal (newSViv (req->result)));	447	PUSHs (sv_2mortal (newSViv (req->result)));
390	PUTBACK;	448	PUTBACK;
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
392	SPAGAIN;	450	SPAGAIN;
393		451
394	fh = SvREFCNT_inc (POPs);	452	fh = POPs;
395
396	PUSHMARK (SP);	453	PUSHMARK (SP);
397	XPUSHs (sv_2mortal (fh));	454	XPUSHs (fh);
398	}	455	}
399	break;	456	break;
400		457
401	case REQ_GROUP:	458	case REQ_GROUP:
402	req->fd = 2; /* mark group as finished */	459	req->int1 = 2; /* mark group as finished */
403		460
404	if (req->data)	461	if (req->sv1)
405	{	462	{
406	int i;	463	int i;
407	AV *av = (AV *)req->data;	464	AV *av = (AV *)req->sv1;
408		465
409	EXTEND (SP, AvFILL (av) + 1);	466	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	467	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	468	PUSHs (*av_fetch (av, i, 0));
412	}	469	}
…		…
414		471
415	case REQ_NOP:	472	case REQ_NOP:
416	case REQ_BUSY:	473	case REQ_BUSY:
417	break;	474	break;
418		475
		476	case REQ_READLINK:
		477	if (req->result > 0)
		478	{
		479	SvCUR_set (req->sv1, req->result);
		480	*SvEND (req->sv1) = 0;
		481	PUSHs (req->sv1);
		482	}
		483	break;
		484
		485	case REQ_STAT:
		486	case REQ_LSTAT:
		487	case REQ_FSTAT:
		488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		489	PL_laststatval = req->result;
		490	PL_statcache = *(Stat_t *)(req->ptr2);
		491	PUSHs (sv_2mortal (newSViv (req->result)));
		492	break;
		493
		494	case REQ_READ:
		495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		496	*SvEND (req->sv1) = 0;
		497	PUSHs (sv_2mortal (newSViv (req->result)));
		498	break;
		499
419	default:	500	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	501	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	502	break;
422	}	503	}
423		504
		505	errno = req->errorno;
424		506
425	PUTBACK;	507	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	508	call_sv (req->callback, G_VOID | G_EVAL);
427	SPAGAIN;	509	SPAGAIN;
428		510
…		…
457	{	539	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
460	}	542	}
461		543
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		548
468	if (req->type == REQ_READDIR)	549	if (req->flags & FLAG_PTR2_FREE)
469	free (req->data2ptr);	550	free (req->ptr2);
470		551
471	Safefree (req);	552	Safefree (req);
472	}	553	}
473		554
474	static void req_cancel_subs (aio_req grp)	555	static void req_cancel_subs (aio_req grp)
…		…
476	aio_req sub;	557	aio_req sub;
477		558
478	if (grp->type != REQ_GROUP)	559	if (grp->type != REQ_GROUP)
479	return;	560	return;
480		561
481	SvREFCNT_dec (grp->fh2);	562	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	563	grp->sv2 = 0;
483		564
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	565	for (sub = grp->grp_first; sub; sub = sub->grp_next)
485	req_cancel (sub);	566	req_cancel (sub);
486	}	567	}
487		568
488	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
489	{	570	{
490	req->flags |= FLAG_CANCELLED;	571	req->flags |= FLAG_CANCELLED;
491		572
492	req_cancel_subs (req);	573	req_cancel_subs (req);
493	}
494
495	static int poll_cb ()
496	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)
503	{
504	LOCK (reslock);
505	req = reqq_shift (&res_queue);
506
507	if (req)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}
554
555	return count;
556	}	574	}
557		575
558	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
559		577
560	static void start_thread (void)	578	static void start_thread (void)
…		…
568	croak ("unable to allocate worker thread data");	586	croak ("unable to allocate worker thread data");
569		587
570	pthread_attr_init (&attr);	588	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);	589	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		591	#ifdef PTHREAD_SCOPE_PROCESS
		592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		593	#endif
573		594
574	sigfillset (&fullsigset);	595	sigfillset (&fullsigset);
575		596
576	LOCK (wrklock);	597	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
…		…
580	{	601	{
581	wrk->prev = &wrk_first;	602	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;	603	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;	604	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;	605	wrk_first.next = wrk;
585	started++;	606	++started;
586	}	607	}
587	else	608	else
588	free (wrk);	609	free (wrk);
589		610
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);	611	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);	612	UNLOCK (wrklock);
592	}	613	}
593		614
		615	static void maybe_start_thread ()
		616	{
		617	if (get_nthreads () >= wanted)
		618	return;
		619
		620	/* todo: maybe use idle here, but might be less exact */
		621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		622	return;
		623
		624	start_thread ();
		625	}
		626
594	static void req_send (aio_req req)	627	static void req_send (aio_req req)
595	{	628	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598
599	++nreqs;	629	++nreqs;
		630
		631	LOCK (reqlock);
		632	++nready;
		633	reqq_push (&req_queue, req);
		634	pthread_cond_signal (&reqwait);
		635	UNLOCK (reqlock);
		636
		637	maybe_start_thread ();
		638	}
		639
		640	static void end_thread (void)
		641	{
		642	aio_req req;
		643
		644	Newz (0, req, 1, aio_cb);
		645
		646	req->type = REQ_QUIT;
		647	req->pri = PRI_MAX + PRI_BIAS;
600		648
601	LOCK (reqlock);	649	LOCK (reqlock);
602	reqq_push (&req_queue, req);	650	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);	651	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);	652	UNLOCK (reqlock);
605		653
606	if (nreqs > max_outstanding)	654	LOCK (wrklock);
607	for (;;)	655	--started;
608	{	656	UNLOCK (wrklock);
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}	657	}
617		658
618	static void end_thread (void)	659	static void set_max_idle (int nthreads)
619	{	660	{
620	aio_req req;	661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
621		662	max_idle = nthreads <= 0 ? 1 : nthreads;
622	Newz (0, req, 1, aio_cb);	663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
623
624	req->type = REQ_QUIT;
625	req->pri = PRI_MAX + PRI_BIAS;
626
627	req_send (req);
628	}	664	}
629		665
630	static void min_parallel (int nthreads)	666	static void min_parallel (int nthreads)
631	{	667	{
632	if (wanted < nthreads)	668	if (wanted < nthreads)
633	wanted = nthreads;	669	wanted = nthreads;
634	}	670	}
635		671
636	static void max_parallel (int nthreads)	672	static void max_parallel (int nthreads)
637	{	673	{
638	int cur = started;
639
640	if (wanted > nthreads)	674	if (wanted > nthreads)
641	wanted = nthreads;	675	wanted = nthreads;
642		676
643	while (cur > wanted)	677	while (started > wanted)
		678	end_thread ();
		679	}
		680
		681	static void poll_wait ()
		682	{
		683	fd_set rfd;
		684
		685	while (nreqs)
644	{	686	{
		687	int size;
		688	if (WORDACCESS_UNSAFE) LOCK (reslock);
		689	size = res_queue.size;
		690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		691
		692	if (size)
		693	return;
		694
645	end_thread ();	695	maybe_start_thread ();
646	cur--;	696
		697	FD_ZERO(&rfd);
		698	FD_SET(respipe [0], &rfd);
		699
		700	select (respipe [0] + 1, &rfd, 0, 0, 0);
647	}	701	}
		702	}
648		703
649	while (started > wanted)	704	static int poll_cb ()
		705	{
		706	dSP;
		707	int count = 0;
		708	int maxreqs = max_poll_reqs;
		709	int do_croak = 0;
		710	struct timeval tv_start, tv_now;
		711	aio_req req;
		712
		713	if (max_poll_time)
		714	gettimeofday (&tv_start, 0);
		715
		716	for (;;)
650	{	717	{
		718	for (;;)
		719	{
		720	maybe_start_thread ();
		721
		722	LOCK (reslock);
		723	req = reqq_shift (&res_queue);
		724
		725	if (req)
		726	{
		727	--npending;
		728
		729	if (!res_queue.size)
		730	{
		731	/* read any signals sent by the worker threads */
		732	char buf [32];
		733	while (read (respipe [0], buf, 32) == 32)
		734	;
		735	}
		736	}
		737
		738	UNLOCK (reslock);
		739
		740	if (!req)
		741	break;
		742
		743	--nreqs;
		744
		745	if (req->type == REQ_GROUP && req->size)
		746	{
		747	req->int1 = 1; /* mark request as delayed */
		748	continue;
		749	}
		750	else
		751	{
		752	req_invoke (req);
		753
		754	count++;
		755	}
		756
		757	req_free (req);
		758
		759	if (maxreqs && !--maxreqs)
		760	break;
		761
		762	if (max_poll_time)
		763	{
		764	gettimeofday (&tv_now, 0);
		765
		766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		767	break;
		768	}
		769	}
		770
		771	if (nreqs <= max_outstanding)
		772	break;
		773
651	poll_wait ();	774	poll_wait ();
652	poll_cb ();	775
		776	++maxreqs;
653	}	777	}
		778
		779	return count;
654	}	780	}
655		781
656	static void create_pipe ()	782	static void create_pipe ()
657	{	783	{
658	if (pipe (respipe))	784	if (pipe (respipe))
…		…
713	#if !HAVE_FDATASYNC	839	#if !HAVE_FDATASYNC
714	# define fdatasync fsync	840	# define fdatasync fsync
715	#endif	841	#endif
716		842
717	#if !HAVE_READAHEAD	843	#if !HAVE_READAHEAD
718	# define readahead aio_readahead	844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
719		845
720	static ssize_t readahead (int fd, off_t offset, size_t count)	846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
721	{	847	{
722	dBUF;	848	dBUF;
723		849
724	while (count > 0)	850	while (count > 0)
725	{	851	{
…		…
730	count -= len;	856	count -= len;
731	}	857	}
732		858
733	errno = 0;	859	errno = 0;
734	}	860	}
		861
735	#endif	862	#endif
736		863
737	#if !HAVE_READDIR_R	864	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r	865	# define readdir_r aio_readdir_r
739		866
…		…
784	{	911	{
785	off_t sbytes;	912	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787		914
788	if (res < 0 && sbytes)	915	if (res < 0 && sbytes)
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
790	res = sbytes;	917	res = sbytes;
791	}	918	}
792		919
793	# elif __hpux	920	# elif __hpux
794	res = sendfile (ofd, ifd, offset, count, 0, 0);	921	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
872	int memofs = 0;	999	int memofs = 0;
873	int res = 0;	1000	int res = 0;
874	int errorno;	1001	int errorno;
875		1002
876	LOCK (wrklock);	1003	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);	1004	self->dirp = dirp = opendir (req->ptr1);
878	self->dbuf = u = malloc (sizeof (*u));	1005	self->dbuf = u = malloc (sizeof (*u));
		1006	req->flags |= FLAG_PTR2_FREE;
		1007	req->ptr2 = names = malloc (memlen);
879	UNLOCK (wrklock);	1008	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882		1009
883	if (dirp && u && names)	1010	if (dirp && u && names)
884	for (;;)	1011	for (;;)
885	{	1012	{
886	errno = 0;	1013	errno = 0;
…		…
899		1026
900	while (memofs + len > memlen)	1027	while (memofs + len > memlen)
901	{	1028	{
902	memlen *= 2;	1029	memlen *= 2;
903	LOCK (wrklock);	1030	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);	1031	req->ptr2 = names = realloc (names, memlen);
905	UNLOCK (wrklock);	1032	UNLOCK (wrklock);
906		1033
907	if (!names)	1034	if (!names)
908	break;	1035	break;
909	}	1036	}
…		…
922	/*****************************************************************************/	1049	/*****************************************************************************/
923		1050
924	static void *aio_proc (void *thr_arg)	1051	static void *aio_proc (void *thr_arg)
925	{	1052	{
926	aio_req req;	1053	aio_req req;
927	int type;	1054	struct timespec ts;
928	worker *self = (worker *)thr_arg;	1055	worker *self = (worker *)thr_arg;
929		1056
930	do	1057	/* try to distribute timeouts somewhat evenly */
		1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1059	* (1000000000UL / 1024UL);
		1060
		1061	for (;;)
931	{	1062	{
		1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1064
932	LOCK (reqlock);	1065	LOCK (reqlock);
933		1066
934	for (;;)	1067	for (;;)
935	{	1068	{
936	self->req = req = reqq_shift (&req_queue);	1069	self->req = req = reqq_shift (&req_queue);
937		1070
938	if (req)	1071	if (req)
939	break;	1072	break;
940		1073
		1074	++idle;
		1075
		1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1077	== ETIMEDOUT)
		1078	{
		1079	if (idle > max_idle)
		1080	{
		1081	--idle;
		1082	UNLOCK (reqlock);
		1083	LOCK (wrklock);
		1084	--started;
		1085	UNLOCK (wrklock);
		1086	goto quit;
		1087	}
		1088
		1089	/* we are allowed to idle, so do so without any timeout */
941	pthread_cond_wait (&reqwait, &reqlock);	1090	pthread_cond_wait (&reqwait, &reqlock);
		1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1092	}
		1093
		1094	--idle;
942	}	1095	}
		1096
		1097	--nready;
943		1098
944	UNLOCK (reqlock);	1099	UNLOCK (reqlock);
945		1100
946	errno = 0; /* strictly unnecessary */	1101	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948		1102
949	if (!(req->flags & FLAG_CANCELLED))	1103	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)	1104	switch (req->type)
951	{	1105	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
954		1108
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
957		1111
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
961		1115
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;	1117	case REQ_CLOSE: req->result = close (req->int1); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
969		1125
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;	1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
972	case REQ_READDIR: scandir_ (req, self); break;	1128	case REQ_READDIR: scandir_ (req, self); break;
973		1129
974	case REQ_BUSY:	1130	case REQ_BUSY:
975	{	1131	{
976	struct timeval tv;	1132	struct timeval tv;
977		1133
978	tv.tv_sec = req->fd;	1134	tv.tv_sec = req->int1;
979	tv.tv_usec = req->fd2;	1135	tv.tv_usec = req->int2;
980		1136
981	req->result = select (0, 0, 0, 0, &tv);	1137	req->result = select (0, 0, 0, 0, &tv);
982	}	1138	}
983		1139
984	case REQ_GROUP:	1140	case REQ_GROUP:
985	case REQ_NOP:	1141	case REQ_NOP:
		1142	break;
		1143
986	case REQ_QUIT:	1144	case REQ_QUIT:
987	break;	1145	goto quit;
988		1146
989	default:	1147	default:
990	req->result = ENOSYS;	1148	req->result = ENOSYS;
991	break;	1149	break;
992	}	1150	}
993		1151
994	req->errorno = errno;	1152	req->errorno = errno;
995		1153
996	LOCK (reslock);	1154	LOCK (reslock);
997		1155
		1156	++npending;
		1157
998	if (!reqq_push (&res_queue, req))	1158	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
1001		1161
1002	self->req = 0;	1162	self->req = 0;
1003	worker_clear (self);	1163	worker_clear (self);
1004		1164
1005	UNLOCK (reslock);	1165	UNLOCK (reslock);
1006	}	1166	}
1007	while (type != REQ_QUIT);
1008		1167
		1168	quit:
1009	LOCK (wrklock);	1169	LOCK (wrklock);
1010	worker_free (self);	1170	worker_free (self);
1011	UNLOCK (wrklock);	1171	UNLOCK (wrklock);
1012		1172
1013	return 0;	1173	return 0;
…		…
1060		1220
1061	worker_clear (wrk);	1221	worker_clear (wrk);
1062	worker_free (wrk);	1222	worker_free (wrk);
1063	}	1223	}
1064		1224
1065	started = 0;	1225	started = 0;
		1226	idle = 0;
1066	nreqs = 0;	1227	nreqs = 0;
		1228	nready = 0;
		1229	npending = 0;
1067		1230
1068	close (respipe [0]);	1231	close (respipe [0]);
1069	close (respipe [1]);	1232	close (respipe [1]);
1070	create_pipe ();	1233	create_pipe ();
1071		1234
…		…
1098	PROTOTYPES: ENABLE	1261	PROTOTYPES: ENABLE
1099		1262
1100	BOOT:	1263	BOOT:
1101	{	1264	{
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	HV *stash = gv_stashpv ("IO::AIO", 1);
		1266
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1106		1273
1107	create_pipe ();	1274	create_pipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}	1276	}
1110		1277
1111	void	1278	void
1112	min_parallel (nthreads)	1279	max_poll_reqs (int nreqs)
1113	int nthreads
1114	PROTOTYPE: $	1280	PROTOTYPE: $
		1281	CODE:
		1282	max_poll_reqs = nreqs;
1115		1283
1116	void	1284	void
1117	max_parallel (nthreads)	1285	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	1286	PROTOTYPE: $
		1287	CODE:
		1288	max_poll_time = nseconds * AIO_TICKS;
		1289
		1290	void
		1291	min_parallel (int nthreads)
		1292	PROTOTYPE: $
		1293
		1294	void
		1295	max_parallel (int nthreads)
		1296	PROTOTYPE: $
		1297
		1298	void
		1299	max_idle (int nthreads)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	set_max_idle (nthreads);
1120		1303
1121	int	1304	int
1122	max_outstanding (nreqs)	1305	max_outstanding (int maxreqs)
1123	int nreqs	1306	PROTOTYPE: $
1124	PROTOTYPE: $
1125	CODE:	1307	CODE:
1126	RETVAL = max_outstanding;	1308	RETVAL = max_outstanding;
1127	max_outstanding = nreqs;	1309	max_outstanding = maxreqs;
		1310	OUTPUT:
		1311	RETVAL
1128		1312
1129	void	1313	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131	SV * pathname	1315	SV8 * pathname
1132	int flags	1316	int flags
1133	int mode	1317	int mode
1134	SV * callback	1318	SV * callback
1135	PROTOTYPE: $$$;$	1319	PROTOTYPE: $$$;$
1136	PPCODE:	1320	PPCODE:
1137	{	1321	{
1138	dREQ;	1322	dREQ;
1139		1323
1140	req->type = REQ_OPEN;	1324	req->type = REQ_OPEN;
1141	req->data = newSVsv (pathname);	1325	req->sv1 = newSVsv (pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);	1326	req->ptr1 = SvPVbyte_nolen (req->sv1);
1143	req->fd = flags;	1327	req->int1 = flags;
1144	req->mode = mode;	1328	req->mode = mode;
1145		1329
1146	REQ_SEND;	1330	REQ_SEND;
1147	}	1331	}
1148		1332
…		…
1158	PPCODE:	1342	PPCODE:
1159	{	1343	{
1160	dREQ;	1344	dREQ;
1161		1345
1162	req->type = ix;	1346	req->type = ix;
1163	req->fh = newSVsv (fh);	1347	req->fh = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165		1349
1166	REQ_SEND (req);	1350	REQ_SEND (req);
1167	}	1351	}
1168		1352
1169	void	1353	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171	SV * fh	1355	SV * fh
1172	UV offset	1356	UV offset
1173	UV length	1357	UV length
1174	SV * data	1358	SV8 * data
1175	UV dataoffset	1359	UV dataoffset
1176	SV * callback	1360	SV * callback
1177	ALIAS:	1361	ALIAS:
1178	aio_read = REQ_READ	1362	aio_read = REQ_READ
1179	aio_write = REQ_WRITE	1363	aio_write = REQ_WRITE
1180	PROTOTYPE: $$$$$;$	1364	PROTOTYPE: $$$$$;$
1181	PPCODE:	1365	PPCODE:
1182	{	1366	{
1183	aio_req req;
1184	STRLEN svlen;	1367	STRLEN svlen;
1185	char *svptr = SvPVbyte (data, svlen);	1368	char *svptr = SvPVbyte (data, svlen);
1186		1369
1187	SvUPGRADE (data, SVt_PV);	1370	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);	1371	SvPOK_on (data);
…		…
1210		1393
1211	{	1394	{
1212	dREQ;	1395	dREQ;
1213		1396
1214	req->type = ix;	1397	req->type = ix;
1215	req->fh = newSVsv (fh);	1398	req->fh = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1217	: IoOFP (sv_2io (fh)));	1400	: IoOFP (sv_2io (fh)));
1218	req->offset = offset;	1401	req->offs = offset;
1219	req->length = length;	1402	req->size = length;
1220	req->data = SvREFCNT_inc (data);	1403	req->sv1 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1404	req->ptr1 = (char *)svptr + dataoffset;
		1405	req->stroffset = dataoffset;
1222		1406
1223	if (!SvREADONLY (data))	1407	if (!SvREADONLY (data))
1224	{	1408	{
1225	SvREADONLY_on (data);	1409	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1410	req->flags |= FLAG_SV1_RO_OFF;
1227	}	1411	}
1228		1412
1229	REQ_SEND;	1413	REQ_SEND;
1230	}	1414	}
		1415	}
		1416
		1417	void
		1418	aio_readlink (path,callback=&PL_sv_undef)
		1419	SV8 * path
		1420	SV * callback
		1421	PROTOTYPE: $$;$
		1422	PPCODE:
		1423	{
		1424	SV *data;
		1425	dREQ;
		1426
		1427	data = newSV (NAME_MAX);
		1428	SvPOK_on (data);
		1429
		1430	req->type = REQ_READLINK;
		1431	req->fh = newSVsv (path);
		1432	req->ptr2 = SvPVbyte_nolen (req->fh);
		1433	req->sv1 = data;
		1434	req->ptr1 = SvPVbyte_nolen (data);
		1435
		1436	REQ_SEND;
1231	}	1437	}
1232		1438
1233	void	1439	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1235	SV * out_fh	1441	SV * out_fh
…		…
1241	PPCODE:	1447	PPCODE:
1242	{	1448	{
1243	dREQ;	1449	dREQ;
1244		1450
1245	req->type = REQ_SENDFILE;	1451	req->type = REQ_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1452	req->fh = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1248	req->fh2 = newSVsv (in_fh);	1454	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1250	req->offset = in_offset;	1456	req->offs = in_offset;
1251	req->length = length;	1457	req->size = length;
1252		1458
1253	REQ_SEND;	1459	REQ_SEND;
1254	}	1460	}
1255		1461
1256	void	1462	void
…		…
1263	PPCODE:	1469	PPCODE:
1264	{	1470	{
1265	dREQ;	1471	dREQ;
1266		1472
1267	req->type = REQ_READAHEAD;	1473	req->type = REQ_READAHEAD;
1268	req->fh = newSVsv (fh);	1474	req->fh = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1270	req->offset = offset;	1476	req->offs = offset;
1271	req->length = length;	1477	req->size = length;
1272		1478
1273	REQ_SEND;	1479	REQ_SEND;
1274	}	1480	}
1275		1481
1276	void	1482	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1483	aio_stat (fh_or_path,callback=&PL_sv_undef)
1278	SV * fh_or_path	1484	SV8 * fh_or_path
1279	SV * callback	1485	SV * callback
1280	ALIAS:	1486	ALIAS:
1281	aio_stat = REQ_STAT	1487	aio_stat = REQ_STAT
1282	aio_lstat = REQ_LSTAT	1488	aio_lstat = REQ_LSTAT
1283	PPCODE:	1489	PPCODE:
1284	{	1490	{
1285	dREQ;	1491	dREQ;
1286		1492
1287	New (0, req->statdata, 1, Stat_t);	1493	req->ptr2 = malloc (sizeof (Stat_t));
1288	if (!req->statdata)	1494	if (!req->ptr2)
1289	{	1495	{
1290	req_free (req);	1496	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");	1497	croak ("out of memory during aio_stat statdata allocation");
1292	}	1498	}
		1499
		1500	req->flags |= FLAG_PTR2_FREE;
1293		1501
1294	if (SvPOK (fh_or_path))	1502	if (SvPOK (fh_or_path))
1295	{	1503	{
1296	req->type = ix;	1504	req->type = ix;
1297	req->data = newSVsv (fh_or_path);	1505	req->sv1 = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);	1506	req->ptr1 = SvPVbyte_nolen (req->sv1);
1299	}	1507	}
1300	else	1508	else
1301	{	1509	{
1302	req->type = REQ_FSTAT;	1510	req->type = REQ_FSTAT;
1303	req->fh = newSVsv (fh_or_path);	1511	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}	1513	}
1306		1514
1307	REQ_SEND;	1515	REQ_SEND;
1308	}	1516	}
1309		1517
1310	void	1518	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1519	aio_unlink (pathname,callback=&PL_sv_undef)
1312	SV * pathname	1520	SV8 * pathname
1313	SV * callback	1521	SV * callback
1314	ALIAS:	1522	ALIAS:
1315	aio_unlink = REQ_UNLINK	1523	aio_unlink = REQ_UNLINK
1316	aio_rmdir = REQ_RMDIR	1524	aio_rmdir = REQ_RMDIR
1317	aio_readdir = REQ_READDIR	1525	aio_readdir = REQ_READDIR
1318	PPCODE:	1526	PPCODE:
1319	{	1527	{
1320	dREQ;	1528	dREQ;
1321		1529
1322	req->type = ix;	1530	req->type = ix;
1323	req->data = newSVsv (pathname);	1531	req->sv1 = newSVsv (pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1532	req->ptr1 = SvPVbyte_nolen (req->sv1);
1325		1533
1326	REQ_SEND;	1534	REQ_SEND;
1327	}	1535	}
1328		1536
1329	void	1537	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1331	SV * oldpath	1539	SV8 * oldpath
1332	SV * newpath	1540	SV8 * newpath
1333	SV * callback	1541	SV * callback
1334	ALIAS:	1542	ALIAS:
1335	aio_link = REQ_LINK	1543	aio_link = REQ_LINK
1336	aio_symlink = REQ_SYMLINK	1544	aio_symlink = REQ_SYMLINK
1337	aio_rename = REQ_RENAME	1545	aio_rename = REQ_RENAME
1338	PPCODE:	1546	PPCODE:
1339	{	1547	{
1340	dREQ;	1548	dREQ;
1341		1549
1342	req->type = ix;	1550	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1551	req->fh = newSVsv (oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1345	req->data = newSVsv (newpath);	1553	req->sv1 = newSVsv (newpath);
1346	req->dataptr = SvPVbyte_nolen (req->data);	1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1347		1555
1348	REQ_SEND;	1556	REQ_SEND;
1349	}	1557	}
1350		1558
1351	void	1559	void
		1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1561	SV8 * pathname
		1562	SV * callback
		1563	UV mode
		1564	UV dev
		1565	PPCODE:
		1566	{
		1567	dREQ;
		1568
		1569	req->type = REQ_MKNOD;
		1570	req->sv1 = newSVsv (pathname);
		1571	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1572	req->mode = (mode_t)mode;
		1573	req->offs = dev;
		1574
		1575	REQ_SEND;
		1576	}
		1577
		1578	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1579	aio_busy (delay,callback=&PL_sv_undef)
1353	double delay	1580	double delay
1354	SV * callback	1581	SV * callback
1355	PPCODE:	1582	PPCODE:
1356	{	1583	{
1357	dREQ;	1584	dREQ;
1358		1585
1359	req->type = REQ_BUSY;	1586	req->type = REQ_BUSY;
1360	req->fd = delay < 0. ? 0 : delay;	1587	req->int1 = delay < 0. ? 0 : delay;
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1362		1589
1363	REQ_SEND;	1590	REQ_SEND;
1364	}	1591	}
1365		1592
1366	void	1593	void
…		…
1370	PPCODE:	1597	PPCODE:
1371	{	1598	{
1372	dREQ;	1599	dREQ;
1373		1600
1374	req->type = REQ_GROUP;	1601	req->type = REQ_GROUP;
		1602
1375	req_send (req);	1603	req_send (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1378	}	1605	}
1379		1606
1380	void	1607	void
1381	aio_nop (callback=&PL_sv_undef)	1608	aio_nop (callback=&PL_sv_undef)
1382	SV * callback	1609	SV * callback
1383	PPCODE:	1610	PPCODE:
1384	{	1611	{
1385	dREQ;	1612	dREQ;
1386		1613
1387	req->type = REQ_NOP;	1614	req->type = REQ_NOP;
1388		1615
1389	REQ_SEND;	1616	REQ_SEND;
1390	}	1617	}
1391		1618
1392	void	1619	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1620	aioreq_pri (int pri = 0)
1394	CODE:	1621	PROTOTYPE: ;$
		1622	CODE:
		1623	RETVAL = next_pri - PRI_BIAS;
		1624	if (items > 0)
		1625	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1626	if (pri < PRI_MIN) pri = PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1627	if (pri > PRI_MAX) pri = PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1628	next_pri = pri + PRI_BIAS;
		1629	}
		1630	OUTPUT:
		1631	RETVAL
1398		1632
1399	void	1633	void
1400	aioreq_nice (int nice = 0)	1634	aioreq_nice (int nice = 0)
1401	CODE:	1635	CODE:
1402	nice = next_pri - nice;	1636	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1637	if (nice < PRI_MIN) nice = PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1638	if (nice > PRI_MAX) nice = PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1639	next_pri = nice + PRI_BIAS;
1406		1640
1407	void	1641	void
1408	flush ()	1642	flush ()
1409	PROTOTYPE:	1643	PROTOTYPE:
1410	CODE:	1644	CODE:
…		…
1412	{	1646	{
1413	poll_wait ();	1647	poll_wait ();
1414	poll_cb ();	1648	poll_cb ();
1415	}	1649	}
1416		1650
1417	void	1651	int
1418	poll()	1652	poll()
1419	PROTOTYPE:	1653	PROTOTYPE:
1420	CODE:	1654	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1655	poll_wait ();
1424	poll_cb ();	1656	RETVAL = poll_cb ();
1425	}	1657	OUTPUT:
		1658	RETVAL
1426		1659
1427	int	1660	int
1428	poll_fileno()	1661	poll_fileno()
1429	PROTOTYPE:	1662	PROTOTYPE:
1430	CODE:	1663	CODE:
…		…
1442		1675
1443	void	1676	void
1444	poll_wait()	1677	poll_wait()
1445	PROTOTYPE:	1678	PROTOTYPE:
1446	CODE:	1679	CODE:
1447	if (nreqs)
1448	poll_wait ();	1680	poll_wait ();
1449		1681
1450	int	1682	int
1451	nreqs()	1683	nreqs()
1452	PROTOTYPE:	1684	PROTOTYPE:
1453	CODE:	1685	CODE:
1454	RETVAL = nreqs;	1686	RETVAL = nreqs;
1455	OUTPUT:	1687	OUTPUT:
1456	RETVAL	1688	RETVAL
1457		1689
		1690	int
		1691	nready()
		1692	PROTOTYPE:
		1693	CODE:
		1694	RETVAL = get_nready ();
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	npending()
		1700	PROTOTYPE:
		1701	CODE:
		1702	RETVAL = get_npending ();
		1703	OUTPUT:
		1704	RETVAL
		1705
		1706	int
		1707	nthreads()
		1708	PROTOTYPE:
		1709	CODE:
		1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1711	RETVAL = started;
		1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1713	OUTPUT:
		1714	RETVAL
		1715
1458	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1459		1717
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1719
1462	void	1720	void
…		…
1477	PPCODE:	1735	PPCODE:
1478	{	1736	{
1479	int i;	1737	int i;
1480	aio_req req;	1738	aio_req req;
1481		1739
1482	if (grp->fd == 2)	1740	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1742
1485	for (i = 1; i < items; ++i )	1743	for (i = 1; i < items; ++i )
1486	{	1744	{
1487	if (GIMME_V != G_VOID)	1745	if (GIMME_V != G_VOID)
…		…
1489		1747
1490	req = SvAIO_REQ (ST (i));	1748	req = SvAIO_REQ (ST (i));
1491		1749
1492	if (req)	1750	if (req)
1493	{	1751	{
1494	++grp->length;	1752	++grp->size;
1495	req->grp = grp;	1753	req->grp = grp;
1496		1754
1497	req->grp_prev = 0;	1755	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;	1756	req->grp_next = grp->grp_first;
1499		1757
…		…
1513	void	1771	void
1514	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1515	CODE:	1773	CODE:
1516	{	1774	{
1517	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1518	AV *av = newAV ();	1780	av = newAV ();
1519		1781
1520	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1522		1784
1523	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1525	}	1787	}
		1788
		1789	void
		1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
1526		1793
1527	void	1794	void
1528	limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1529	CODE:	1796	CODE:
1530	grp->fd2 = limit;	1797	grp->int2 = limit;
1531	aio_grp_feed (grp);	1798	aio_grp_feed (grp);
1532		1799
1533	void	1800	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1802	CODE:
1536	{	1803	{
1537	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
1539		1806
1540	if (grp->fd2 <= 0)	1807	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1808	grp->int2 = 2;
1542		1809
1543	aio_grp_feed (grp);	1810	aio_grp_feed (grp);
1544	}	1811	}
1545		1812

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