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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "autoconf/config.h"
18		10
19	#include <pthread.h>
20
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>	14	#include <sys/time.h>
24	#include <sys/select.h>	15	#include <sys/select.h>
25	#include <sys/types.h>	16	#include <sys/types.h>
26	#include <sys/stat.h>	17	#include <sys/stat.h>
…		…
43	# else	34	# else
44	# error sendfile support requested but not available	35	# error sendfile support requested but not available
45	# endif	36	# endif
46	#endif	37	#endif
47		38
		39	/* number of seconds after which idle threads exit */
		40	#define IDLE_TIMEOUT 10
		41
48	/* used for struct dirent, AIX doesn't provide it */	42	/* used for struct dirent, AIX doesn't provide it */
49	#ifndef NAME_MAX	43	#ifndef NAME_MAX
50	# define NAME_MAX 4096	44	# define NAME_MAX 4096
51	#endif
52
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif	45	#endif
77		46
78	/* buffer size for various temporary buffers */	47	/* buffer size for various temporary buffers */
79	#define AIO_BUFSIZE 65536	48	#define AIO_BUFSIZE 65536
80		49
…		…
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \	54	UNLOCK (wrklock); \
86	if (!aio_buf) \	55	if (!aio_buf) \
87	return -1;	56	return -1;
88		57
		58	typedef SV SV8; /* byte-sv, used for argument-checking */
		59
89	enum {	60	enum {
90	REQ_QUIT,	61	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,	62	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,	63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,	64	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,	66	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
97	REQ_READDIR,	68	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,	69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
99	REQ_GROUP, REQ_NOP,	70	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,	71	REQ_BUSY,
101	};	72	};
102		73
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	74	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
105		76
106	typedef struct aio_cb	77	typedef struct aio_cb
107	{	78	{
108	struct aio_cb *volatile next;	79	struct aio_cb *volatile next;
109		80
110	SV *data, *callback;	81	SV *callback, *fh;
111	SV *fh, *fh2;	82	SV *sv1, *sv2;
112	void *dataptr, *data2ptr;	83	void *ptr1, *ptr2;
113	Stat_t *statdata;
114	off_t offset;	84	off_t offs;
115	size_t length;	85	size_t size;
116	ssize_t result;	86	ssize_t result;
117		87
118	STRLEN dataoffset;	88	STRLEN stroffset;
119	int type;	89	int type;
120	int fd, fd2;	90	int int1, int2;
121	int errorno;	91	int errorno;
122	mode_t mode; /* open */	92	mode_t mode; /* open */
123		93
124	unsigned char flags;	94	unsigned char flags;
125	unsigned char pri;	95	unsigned char pri;
…		…
127	SV *self; /* the perl counterpart of this request, if any */	97	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;	99	} aio_cb;
130		100
131	enum {	101	enum {
132	FLAG_CANCELLED = 0x01,	102	FLAG_CANCELLED = 0x01, /* request was cancelled */
		103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
133	};	105	};
134		106
135	typedef aio_cb *aio_req;	107	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;	108	typedef aio_cb *aio_req_ornot;
137		109
…		…
142	DEFAULT_PRI = 0,	114	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,	115	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};	117	};
146		118
		119	#define AIO_TICKS ((1000000 + 1023) >> 10)
		120
		121	static unsigned int max_poll_time = 0;
		122	static unsigned int max_poll_reqs = 0;
		123
		124	/* calculcate time difference in ~1/AIO_TICKS of a second */
		125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		126	{
		127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		129	}
		130
		131	static thread_t main_tid;
		132	static int main_sig;
		133	static int block_sig_level;
		134
		135	void block_sig ()
		136	{
		137	sigset_t ss;
		138
		139	if (block_sig_level++)
		140	return;
		141
		142	if (!main_sig)
		143	return;
		144
		145	sigemptyset (&ss);
		146	sigaddset (&ss, main_sig);
		147	pthread_sigmask (SIG_BLOCK, &ss, 0);
		148	}
		149
		150	void unblock_sig ()
		151	{
		152	sigset_t ss;
		153
		154	if (--block_sig_level)
		155	return;
		156
		157	if (!main_sig)
		158	return;
		159
		160	sigemptyset (&ss);
		161	sigaddset (&ss, main_sig);
		162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		163	}
		164
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148		166
149	static unsigned int started, wanted;	167	static unsigned int started, idle, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162		168
163	/* worker threads management */	169	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	170	static mutex_t wrklock = MUTEX_INIT;
165		171
166	typedef struct worker {	172	typedef struct worker {
167	/* locked by wrklock */	173	/* locked by wrklock */
168	struct worker *prev, *next;	174	struct worker *prev, *next;
169		175
170	pthread_t tid;	176	thread_t tid;
171		177
172	/* locked by reslock, reqlock or wrklock */	178	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */	179	aio_req req; /* currently processed request */
174	void *dbuf;	180	void *dbuf;
175	DIR *dirp;	181	DIR *dirp;
…		…
198	wrk->prev->next = wrk->next;	204	wrk->prev->next = wrk->next;
199		205
200	free (wrk);	206	free (wrk);
201	}	207	}
202		208
		209	static volatile unsigned int nreqs, nready, npending;
		210	static volatile unsigned int max_idle = 4;
		211	static volatile unsigned int max_outstanding = 0xffffffff;
		212	static int respipe [2];
		213
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	214	static mutex_t reslock = MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	215	static mutex_t reqlock = MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	216	static cond_t reqwait = COND_INIT;
		217
		218	#if WORDACCESS_UNSAFE
		219
		220	static unsigned int get_nready ()
		221	{
		222	unsigned int retval;
		223
		224	LOCK (reqlock);
		225	retval = nready;
		226	UNLOCK (reqlock);
		227
		228	return retval;
		229	}
		230
		231	static unsigned int get_npending ()
		232	{
		233	unsigned int retval;
		234
		235	LOCK (reslock);
		236	retval = npending;
		237	UNLOCK (reslock);
		238
		239	return retval;
		240	}
		241
		242	static unsigned int get_nthreads ()
		243	{
		244	unsigned int retval;
		245
		246	LOCK (wrklock);
		247	retval = started;
		248	UNLOCK (wrklock);
		249
		250	return retval;
		251	}
		252
		253	#else
		254
		255	# define get_nready() nready
		256	# define get_npending() npending
		257	# define get_nthreads() started
		258
		259	#endif
206		260
207	/*	261	/*
208	* a somewhat faster data structure might be nice, but	262	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns	263	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.	264	* per shift, the most expensive operation.
…		…
256	}	310	}
257		311
258	abort ();	312	abort ();
259	}	313	}
260		314
261	static int poll_cb (int max);	315	static int poll_cb ();
262	static void req_invoke (aio_req req);	316	static int req_invoke (aio_req req);
263	static void req_free (aio_req req);	317	static void req_free (aio_req req);
264	static void req_cancel (aio_req req);	318	static void req_cancel (aio_req req);
265		319
266	/* must be called at most once */	320	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	321	static SV *req_sv (aio_req req, const char *klass)
…		…
287	return mg ? (aio_req)mg->mg_ptr : 0;	341	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	342	}
289		343
290	static void aio_grp_feed (aio_req grp)	344	static void aio_grp_feed (aio_req grp)
291	{	345	{
		346	block_sig ();
		347
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
293	{	349	{
294	int old_len = grp->length;	350	int old_len = grp->size;
295		351
296	if (grp->fh2 && SvOK (grp->fh2))	352	if (grp->sv2 && SvOK (grp->sv2))
297	{	353	{
298	dSP;	354	dSP;
299		355
300	ENTER;	356	ENTER;
301	SAVETMPS;	357	SAVETMPS;
302	PUSHMARK (SP);	358	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304	PUTBACK;	360	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	362	SPAGAIN;
307	FREETMPS;	363	FREETMPS;
308	LEAVE;	364	LEAVE;
309	}	365	}
310		366
311	/* stop if no progress has been made */	367	/* stop if no progress has been made */
312	if (old_len == grp->length)	368	if (old_len == grp->size)
313	{	369	{
314	SvREFCNT_dec (grp->fh2);	370	SvREFCNT_dec (grp->sv2);
315	grp->fh2 = 0;	371	grp->sv2 = 0;
316	break;	372	break;
317	}	373	}
318	}	374	}
		375
		376	unblock_sig ();
319	}	377	}
320		378
321	static void aio_grp_dec (aio_req grp)	379	static void aio_grp_dec (aio_req grp)
322	{	380	{
323	--grp->length;	381	--grp->size;
324		382
325	/* call feeder, if applicable */	383	/* call feeder, if applicable */
326	aio_grp_feed (grp);	384	aio_grp_feed (grp);
327		385
328	/* finish, if done */	386	/* finish, if done */
329	if (!grp->length && grp->fd)	387	if (!grp->size && grp->int1)
330	{	388	{
		389	block_sig ();
		390
331	req_invoke (grp);	391	if (!req_invoke (grp))
		392	{
		393	req_free (grp);
		394	unblock_sig ();
		395	croak (0);
		396	}
		397
332	req_free (grp);	398	req_free (grp);
		399	unblock_sig ();
333	}	400	}
334	}	401	}
335		402
336	static void poll_wait ()
337	{
338	fd_set rfd;
339
340	while (nreqs)
341	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)	403	static int req_invoke (aio_req req)
358	{	404	{
359	dSP;	405	dSP;
		406
		407	if (req->flags & FLAG_SV1_RO_OFF)
		408	SvREADONLY_off (req->sv1);
360		409
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{	411	{
363	ENTER;	412	ENTER;
364	SAVETMPS;	413	SAVETMPS;
…		…
372	SV *rv = &PL_sv_undef;	421	SV *rv = &PL_sv_undef;
373		422
374	if (req->result >= 0)	423	if (req->result >= 0)
375	{	424	{
376	int i;	425	int i;
377	char *buf = req->data2ptr;	426	char *buf = req->ptr2;
378	AV *av = newAV ();	427	AV *av = newAV ();
379		428
380	av_extend (av, req->result - 1);	429	av_extend (av, req->result - 1);
381		430
382	for (i = 0; i < req->result; ++i)	431	for (i = 0; i < req->result; ++i)
…		…
402	PUSHs (sv_2mortal (newSViv (req->result)));	451	PUSHs (sv_2mortal (newSViv (req->result)));
403	PUTBACK;	452	PUTBACK;
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
405	SPAGAIN;	454	SPAGAIN;
406		455
407	fh = SvREFCNT_inc (POPs);	456	fh = POPs;
408
409	PUSHMARK (SP);	457	PUSHMARK (SP);
410	XPUSHs (sv_2mortal (fh));	458	XPUSHs (fh);
411	}	459	}
412	break;	460	break;
413		461
414	case REQ_GROUP:	462	case REQ_GROUP:
415	req->fd = 2; /* mark group as finished */	463	req->int1 = 2; /* mark group as finished */
416		464
417	if (req->data)	465	if (req->sv1)
418	{	466	{
419	int i;	467	int i;
420	AV *av = (AV *)req->data;	468	AV *av = (AV *)req->sv1;
421		469
422	EXTEND (SP, AvFILL (av) + 1);	470	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	471	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	472	PUSHs (*av_fetch (av, i, 0));
425	}	473	}
…		…
427		475
428	case REQ_NOP:	476	case REQ_NOP:
429	case REQ_BUSY:	477	case REQ_BUSY:
430	break;	478	break;
431		479
		480	case REQ_READLINK:
		481	if (req->result > 0)
		482	{
		483	SvCUR_set (req->sv1, req->result);
		484	*SvEND (req->sv1) = 0;
		485	PUSHs (req->sv1);
		486	}
		487	break;
		488
		489	case REQ_STAT:
		490	case REQ_LSTAT:
		491	case REQ_FSTAT:
		492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		493	PL_laststatval = req->result;
		494	PL_statcache = *(Stat_t *)(req->ptr2);
		495	PUSHs (sv_2mortal (newSViv (req->result)));
		496	break;
		497
		498	case REQ_READ:
		499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		500	*SvEND (req->sv1) = 0;
		501	PUSHs (sv_2mortal (newSViv (req->result)));
		502	break;
		503
432	default:	504	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	505	PUSHs (sv_2mortal (newSViv (req->result)));
434	break;	506	break;
435	}	507	}
436		508
…		…
456	grp->grp_first = req->grp_next;	528	grp->grp_first = req->grp_next;
457		529
458	aio_grp_dec (grp);	530	aio_grp_dec (grp);
459	}	531	}
460		532
461	if (SvTRUE (ERRSV))	533	return !SvTRUE (ERRSV);
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	534	}
467		535
468	static void req_free (aio_req req)	536	static void req_free (aio_req req)
469	{	537	{
470	if (req->self)	538	if (req->self)
471	{	539	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
474	}	542	}
475		543
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		548
482	if (req->type == REQ_READDIR)	549	if (req->flags & FLAG_PTR2_FREE)
483	free (req->data2ptr);	550	free (req->ptr2);
484		551
485	Safefree (req);	552	Safefree (req);
486	}	553	}
487		554
488	static void req_cancel_subs (aio_req grp)	555	static void req_cancel_subs (aio_req grp)
…		…
490	aio_req sub;	557	aio_req sub;
491		558
492	if (grp->type != REQ_GROUP)	559	if (grp->type != REQ_GROUP)
493	return;	560	return;
494		561
495	SvREFCNT_dec (grp->fh2);	562	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	563	grp->sv2 = 0;
497		564
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	565	for (sub = grp->grp_first; sub; sub = sub->grp_next)
499	req_cancel (sub);	566	req_cancel (sub);
500	}	567	}
501		568
…		…
504	req->flags |= FLAG_CANCELLED;	571	req->flags |= FLAG_CANCELLED;
505		572
506	req_cancel_subs (req);	573	req_cancel_subs (req);
507	}	574	}
508		575
509	static int poll_cb (int max)
510	{
511	dSP;
512	int count = 0;
513	int do_croak = 0;
514	aio_req req;
515
516	for (;;)
517	{
518	while (max <= 0 || count < max)
519	{
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522
523	if (req)
524	{
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;
575
576	poll_wait ();
577
578	max = 0;
579	}
580
581	return count;
582	}
583
584	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
585		577
586	static void start_thread (void)	578	static void start_thread (void)
587	{	579	{
588	sigset_t fullsigset, oldsigset;
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));	580	worker *wrk = calloc (1, sizeof (worker));
592		581
593	if (!wrk)	582	if (!wrk)
594	croak ("unable to allocate worker thread data");	583	croak ("unable to allocate worker thread data");
595		584
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);	585	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604		586
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
606	{	588	{
607	wrk->prev = &wrk_first;	589	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;	590	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;	591	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;	592	wrk_first.next = wrk;
611	++started;	593	++started;
612	}	594	}
613	else	595	else
614	free (wrk);	596	free (wrk);
615		597
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);	598	UNLOCK (wrklock);
618	}	599	}
619		600
		601	static void maybe_start_thread ()
		602	{
		603	if (get_nthreads () >= wanted)
		604	return;
		605
		606	/* todo: maybe use idle here, but might be less exact */
		607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		608	return;
		609
		610	start_thread ();
		611	}
		612
620	static void req_send (aio_req req)	613	static void req_send (aio_req req)
621	{	614	{
622	while (started < wanted && nreqs >= started)	615	block_sig ();
623	start_thread ();
624		616
625	++nreqs;	617	++nreqs;
626		618
627	LOCK (reqlock);	619	LOCK (reqlock);
628	++nready;	620	++nready;
629	reqq_push (&req_queue, req);	621	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);	622	COND_SIGNAL (reqwait);
631	UNLOCK (reqlock);	623	UNLOCK (reqlock);
		624
		625	unblock_sig ();
		626
		627	maybe_start_thread ();
632	}	628	}
633		629
634	static void end_thread (void)	630	static void end_thread (void)
635	{	631	{
636	aio_req req;	632	aio_req req;
…		…
638	Newz (0, req, 1, aio_cb);	634	Newz (0, req, 1, aio_cb);
639		635
640	req->type = REQ_QUIT;	636	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;	637	req->pri = PRI_MAX + PRI_BIAS;
642		638
643	req_send (req);	639	LOCK (reqlock);
		640	reqq_push (&req_queue, req);
		641	COND_SIGNAL (reqwait);
		642	UNLOCK (reqlock);
		643
		644	LOCK (wrklock);
		645	--started;
		646	UNLOCK (wrklock);
		647	}
		648
		649	static void set_max_idle (int nthreads)
		650	{
		651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		652	max_idle = nthreads <= 0 ? 1 : nthreads;
		653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
644	}	654	}
645		655
646	static void min_parallel (int nthreads)	656	static void min_parallel (int nthreads)
647	{	657	{
648	if (wanted < nthreads)	658	if (wanted < nthreads)
649	wanted = nthreads;	659	wanted = nthreads;
650	}	660	}
651		661
652	static void max_parallel (int nthreads)	662	static void max_parallel (int nthreads)
653	{	663	{
654	int cur = started;
655
656	if (wanted > nthreads)	664	if (wanted > nthreads)
657	wanted = nthreads;	665	wanted = nthreads;
658		666
659	while (cur > wanted)	667	while (started > wanted)
		668	end_thread ();
		669	}
		670
		671	static void poll_wait ()
		672	{
		673	fd_set rfd;
		674
		675	while (nreqs)
660	{	676	{
		677	int size;
		678	if (WORDACCESS_UNSAFE) LOCK (reslock);
		679	size = res_queue.size;
		680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		681
		682	if (size)
		683	return;
		684
661	end_thread ();	685	maybe_start_thread ();
662	cur--;	686
		687	FD_ZERO(&rfd);
		688	FD_SET(respipe [0], &rfd);
		689
		690	select (respipe [0] + 1, &rfd, 0, 0, 0);
663	}	691	}
		692	}
664		693
665	while (started > wanted)	694	static int poll_cb ()
		695	{
		696	dSP;
		697	int count = 0;
		698	int maxreqs = max_poll_reqs;
		699	int do_croak = 0;
		700	struct timeval tv_start, tv_now;
		701	aio_req req;
		702
		703	if (max_poll_time)
		704	gettimeofday (&tv_start, 0);
		705
		706	block_sig ();
		707
		708	for (;;)
666	{	709	{
		710	for (;;)
		711	{
		712	maybe_start_thread ();
		713
		714	LOCK (reslock);
		715	req = reqq_shift (&res_queue);
		716
		717	if (req)
		718	{
		719	--npending;
		720
		721	if (!res_queue.size)
		722	{
		723	/* read any signals sent by the worker threads */
		724	char buf [4];
		725	while (read (respipe [0], buf, 4) == 4)
		726	;
		727	}
		728	}
		729
		730	UNLOCK (reslock);
		731
		732	if (!req)
		733	break;
		734
		735	--nreqs;
		736
		737	if (req->type == REQ_GROUP && req->size)
		738	{
		739	req->int1 = 1; /* mark request as delayed */
		740	continue;
		741	}
		742	else
		743	{
		744	if (!req_invoke (req))
		745	{
		746	req_free (req);
		747	unblock_sig ();
		748	croak (0);
		749	}
		750
		751	count++;
		752	}
		753
		754	req_free (req);
		755
		756	if (maxreqs && !--maxreqs)
		757	break;
		758
		759	if (max_poll_time)
		760	{
		761	gettimeofday (&tv_now, 0);
		762
		763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		764	break;
		765	}
		766	}
		767
		768	if (nreqs <= max_outstanding)
		769	break;
		770
667	poll_wait ();	771	poll_wait ();
668	poll_cb (0);	772
		773	++maxreqs;
669	}	774	}
		775
		776	unblock_sig ();
		777	return count;
670	}	778	}
671		779
672	static void create_pipe ()	780	static void create_pipe ()
673	{	781	{
674	if (pipe (respipe))	782	if (pipe (respipe))
…		…
691	/*	799	/*
692	* make our pread/pwrite safe against themselves, but not against	800	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,	801	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.	802	* but that's your problem, not mine.
695	*/	803	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	804	static mutex_t preadwritelock = MUTEX_INIT;
697		805
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{	807	{
700	ssize_t res;	808	ssize_t res;
701	off_t ooffset;	809	off_t ooffset;
…		…
752	#endif	860	#endif
753		861
754	#if !HAVE_READDIR_R	862	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r	863	# define readdir_r aio_readdir_r
756		864
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	865	static mutex_t readdirlock = MUTEX_INIT;
758		866
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{	868	{
761	struct dirent *e;	869	struct dirent *e;
762	int errorno;	870	int errorno;
…		…
889	int memofs = 0;	997	int memofs = 0;
890	int res = 0;	998	int res = 0;
891	int errorno;	999	int errorno;
892		1000
893	LOCK (wrklock);	1001	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);	1002	self->dirp = dirp = opendir (req->ptr1);
895	self->dbuf = u = malloc (sizeof (*u));	1003	self->dbuf = u = malloc (sizeof (*u));
		1004	req->flags |= FLAG_PTR2_FREE;
896	req->data2ptr = names = malloc (memlen);	1005	req->ptr2 = names = malloc (memlen);
897	UNLOCK (wrklock);	1006	UNLOCK (wrklock);
898		1007
899	if (dirp && u && names)	1008	if (dirp && u && names)
900	for (;;)	1009	for (;;)
901	{	1010	{
…		…
915		1024
916	while (memofs + len > memlen)	1025	while (memofs + len > memlen)
917	{	1026	{
918	memlen *= 2;	1027	memlen *= 2;
919	LOCK (wrklock);	1028	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);	1029	req->ptr2 = names = realloc (names, memlen);
921	UNLOCK (wrklock);	1030	UNLOCK (wrklock);
922		1031
923	if (!names)	1032	if (!names)
924	break;	1033	break;
925	}	1034	}
…		…
938	/*****************************************************************************/	1047	/*****************************************************************************/
939		1048
940	static void *aio_proc (void *thr_arg)	1049	static void *aio_proc (void *thr_arg)
941	{	1050	{
942	aio_req req;	1051	aio_req req;
943	int type;	1052	struct timespec ts;
944	worker *self = (worker *)thr_arg;	1053	worker *self = (worker *)thr_arg;
945		1054
946	do	1055	/* try to distribute timeouts somewhat evenly */
		1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1057	* (1000000000UL / 1024UL);
		1058
		1059	for (;;)
947	{	1060	{
		1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1062
948	LOCK (reqlock);	1063	LOCK (reqlock);
949		1064
950	for (;;)	1065	for (;;)
951	{	1066	{
952	self->req = req = reqq_shift (&req_queue);	1067	self->req = req = reqq_shift (&req_queue);
953		1068
954	if (req)	1069	if (req)
955	break;	1070	break;
956		1071
957	pthread_cond_wait (&reqwait, &reqlock);	1072	++idle;
		1073
		1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1075	== ETIMEDOUT)
		1076	{
		1077	if (idle > max_idle)
		1078	{
		1079	--idle;
		1080	UNLOCK (reqlock);
		1081	LOCK (wrklock);
		1082	--started;
		1083	UNLOCK (wrklock);
		1084	goto quit;
		1085	}
		1086
		1087	/* we are allowed to idle, so do so without any timeout */
		1088	COND_WAIT (reqwait, reqlock);
		1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1090	}
		1091
		1092	--idle;
958	}	1093	}
959		1094
960	--nready;	1095	--nready;
961		1096
962	UNLOCK (reqlock);	1097	UNLOCK (reqlock);
963		1098
964	errno = 0; /* strictly unnecessary */	1099	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966		1100
967	if (!(req->flags & FLAG_CANCELLED))	1101	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)	1102	switch (req->type)
969	{	1103	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
972		1106
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
975		1109
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
979		1113
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;	1115	case REQ_CLOSE: req->result = close (req->int1); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
987		1124
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;	1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
990	case REQ_READDIR: scandir_ (req, self); break;	1127	case REQ_READDIR: scandir_ (req, self); break;
991		1128
992	case REQ_BUSY:	1129	case REQ_BUSY:
993	{	1130	{
994	struct timeval tv;	1131	struct timeval tv;
995		1132
996	tv.tv_sec = req->fd;	1133	tv.tv_sec = req->int1;
997	tv.tv_usec = req->fd2;	1134	tv.tv_usec = req->int2;
998		1135
999	req->result = select (0, 0, 0, 0, &tv);	1136	req->result = select (0, 0, 0, 0, &tv);
1000	}	1137	}
1001		1138
1002	case REQ_GROUP:	1139	case REQ_GROUP:
1003	case REQ_NOP:	1140	case REQ_NOP:
		1141	break;
		1142
1004	case REQ_QUIT:	1143	case REQ_QUIT:
1005	break;	1144	goto quit;
1006		1145
1007	default:	1146	default:
1008	req->result = ENOSYS;	1147	req->result = ENOSYS;
1009	break;	1148	break;
1010	}	1149	}
…		…
1014	LOCK (reslock);	1153	LOCK (reslock);
1015		1154
1016	++npending;	1155	++npending;
1017		1156
1018	if (!reqq_push (&res_queue, req))	1157	if (!reqq_push (&res_queue, req))
		1158	{
1019	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
		1161
		1162	/* optionally signal the main thread asynchronously */
		1163	if (main_sig)
		1164	pthread_kill (main_tid, main_sig);
		1165	}
1021		1166
1022	self->req = 0;	1167	self->req = 0;
1023	worker_clear (self);	1168	worker_clear (self);
1024		1169
1025	UNLOCK (reslock);	1170	UNLOCK (reslock);
1026	}	1171	}
1027	while (type != REQ_QUIT);
1028		1172
		1173	quit:
1029	LOCK (wrklock);	1174	LOCK (wrklock);
1030	worker_free (self);	1175	worker_free (self);
1031	UNLOCK (wrklock);	1176	UNLOCK (wrklock);
1032		1177
1033	return 0;	1178	return 0;
…		…
1080		1225
1081	worker_clear (wrk);	1226	worker_clear (wrk);
1082	worker_free (wrk);	1227	worker_free (wrk);
1083	}	1228	}
1084		1229
1085	started = 0;	1230	started = 0;
		1231	idle = 0;
1086	nreqs = 0;	1232	nreqs = 0;
		1233	nready = 0;
		1234	npending = 0;
1087		1235
1088	close (respipe [0]);	1236	close (respipe [0]);
1089	close (respipe [1]);	1237	close (respipe [1]);
1090	create_pipe ();	1238	create_pipe ();
1091		1239
…		…
1118	PROTOTYPES: ENABLE	1266	PROTOTYPES: ENABLE
1119		1267
1120	BOOT:	1268	BOOT:
1121	{	1269	{
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	1270	HV *stash = gv_stashpv ("IO::AIO", 1);
		1271
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1126		1279
1127	create_pipe ();	1280	create_pipe ();
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1129	}	1282	}
		1283
		1284	void
		1285	max_poll_reqs (int nreqs)
		1286	PROTOTYPE: $
		1287	CODE:
		1288	max_poll_reqs = nreqs;
		1289
		1290	void
		1291	max_poll_time (double nseconds)
		1292	PROTOTYPE: $
		1293	CODE:
		1294	max_poll_time = nseconds * AIO_TICKS;
1130		1295
1131	void	1296	void
1132	min_parallel (int nthreads)	1297	min_parallel (int nthreads)
1133	PROTOTYPE: $	1298	PROTOTYPE: $
1134		1299
1135	void	1300	void
1136	max_parallel (int nthreads)	1301	max_parallel (int nthreads)
1137	PROTOTYPE: $	1302	PROTOTYPE: $
		1303
		1304	void
		1305	max_idle (int nthreads)
		1306	PROTOTYPE: $
		1307	CODE:
		1308	set_max_idle (nthreads);
1138		1309
1139	int	1310	int
1140	max_outstanding (int maxreqs)	1311	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1312	PROTOTYPE: $
1142	CODE:	1313	CODE:
…		…
1145	OUTPUT:	1316	OUTPUT:
1146	RETVAL	1317	RETVAL
1147		1318
1148	void	1319	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1150	SV * pathname	1321	SV8 * pathname
1151	int flags	1322	int flags
1152	int mode	1323	int mode
1153	SV * callback	1324	SV * callback
1154	PROTOTYPE: $$$;$	1325	PROTOTYPE: $$$;$
1155	PPCODE:	1326	PPCODE:
1156	{	1327	{
1157	dREQ;	1328	dREQ;
1158		1329
1159	req->type = REQ_OPEN;	1330	req->type = REQ_OPEN;
1160	req->data = newSVsv (pathname);	1331	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	1332	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	1333	req->int1 = flags;
1163	req->mode = mode;	1334	req->mode = mode;
1164		1335
1165	REQ_SEND;	1336	REQ_SEND;
1166	}	1337	}
1167		1338
…		…
1177	PPCODE:	1348	PPCODE:
1178	{	1349	{
1179	dREQ;	1350	dREQ;
1180		1351
1181	req->type = ix;	1352	req->type = ix;
1182	req->fh = newSVsv (fh);	1353	req->fh = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1184		1355
1185	REQ_SEND (req);	1356	REQ_SEND (req);
1186	}	1357	}
1187		1358
1188	void	1359	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1190	SV * fh	1361	SV * fh
1191	UV offset	1362	UV offset
1192	UV length	1363	UV length
1193	SV * data	1364	SV8 * data
1194	UV dataoffset	1365	UV dataoffset
1195	SV * callback	1366	SV * callback
1196	ALIAS:	1367	ALIAS:
1197	aio_read = REQ_READ	1368	aio_read = REQ_READ
1198	aio_write = REQ_WRITE	1369	aio_write = REQ_WRITE
1199	PROTOTYPE: $$$$$;$	1370	PROTOTYPE: $$$$$;$
1200	PPCODE:	1371	PPCODE:
1201	{	1372	{
1202	aio_req req;
1203	STRLEN svlen;	1373	STRLEN svlen;
1204	char *svptr = SvPVbyte (data, svlen);	1374	char *svptr = SvPVbyte (data, svlen);
1205		1375
1206	SvUPGRADE (data, SVt_PV);	1376	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);	1377	SvPOK_on (data);
…		…
1219	length = svlen - dataoffset;	1389	length = svlen - dataoffset;
1220	}	1390	}
1221	else	1391	else
1222	{	1392	{
1223	/* read: grow scalar as necessary */	1393	/* read: grow scalar as necessary */
1224	svptr = SvGROW (data, length + dataoffset);	1394	svptr = SvGROW (data, length + dataoffset + 1);
1225	}	1395	}
1226		1396
1227	if (length < 0)	1397	if (length < 0)
1228	croak ("length must not be negative");	1398	croak ("length must not be negative");
1229		1399
1230	{	1400	{
1231	dREQ;	1401	dREQ;
1232		1402
1233	req->type = ix;	1403	req->type = ix;
1234	req->fh = newSVsv (fh);	1404	req->fh = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1236	: IoOFP (sv_2io (fh)));	1406	: IoOFP (sv_2io (fh)));
1237	req->offset = offset;	1407	req->offs = offset;
1238	req->length = length;	1408	req->size = length;
1239	req->data = SvREFCNT_inc (data);	1409	req->sv1 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1410	req->ptr1 = (char *)svptr + dataoffset;
		1411	req->stroffset = dataoffset;
1241		1412
1242	if (!SvREADONLY (data))	1413	if (!SvREADONLY (data))
1243	{	1414	{
1244	SvREADONLY_on (data);	1415	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1416	req->flags |= FLAG_SV1_RO_OFF;
1246	}	1417	}
1247		1418
1248	REQ_SEND;	1419	REQ_SEND;
1249	}	1420	}
		1421	}
		1422
		1423	void
		1424	aio_readlink (path,callback=&PL_sv_undef)
		1425	SV8 * path
		1426	SV * callback
		1427	PROTOTYPE: $$;$
		1428	PPCODE:
		1429	{
		1430	SV *data;
		1431	dREQ;
		1432
		1433	data = newSV (NAME_MAX);
		1434	SvPOK_on (data);
		1435
		1436	req->type = REQ_READLINK;
		1437	req->fh = newSVsv (path);
		1438	req->ptr2 = SvPVbyte_nolen (req->fh);
		1439	req->sv1 = data;
		1440	req->ptr1 = SvPVbyte_nolen (data);
		1441
		1442	REQ_SEND;
1250	}	1443	}
1251		1444
1252	void	1445	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1254	SV * out_fh	1447	SV * out_fh
…		…
1260	PPCODE:	1453	PPCODE:
1261	{	1454	{
1262	dREQ;	1455	dREQ;
1263		1456
1264	req->type = REQ_SENDFILE;	1457	req->type = REQ_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1458	req->fh = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1267	req->fh2 = newSVsv (in_fh);	1460	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1269	req->offset = in_offset;	1462	req->offs = in_offset;
1270	req->length = length;	1463	req->size = length;
1271		1464
1272	REQ_SEND;	1465	REQ_SEND;
1273	}	1466	}
1274		1467
1275	void	1468	void
…		…
1282	PPCODE:	1475	PPCODE:
1283	{	1476	{
1284	dREQ;	1477	dREQ;
1285		1478
1286	req->type = REQ_READAHEAD;	1479	req->type = REQ_READAHEAD;
1287	req->fh = newSVsv (fh);	1480	req->fh = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1289	req->offset = offset;	1482	req->offs = offset;
1290	req->length = length;	1483	req->size = length;
1291		1484
1292	REQ_SEND;	1485	REQ_SEND;
1293	}	1486	}
1294		1487
1295	void	1488	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1489	aio_stat (fh_or_path,callback=&PL_sv_undef)
1297	SV * fh_or_path	1490	SV8 * fh_or_path
1298	SV * callback	1491	SV * callback
1299	ALIAS:	1492	ALIAS:
1300	aio_stat = REQ_STAT	1493	aio_stat = REQ_STAT
1301	aio_lstat = REQ_LSTAT	1494	aio_lstat = REQ_LSTAT
1302	PPCODE:	1495	PPCODE:
1303	{	1496	{
1304	dREQ;	1497	dREQ;
1305		1498
1306	New (0, req->statdata, 1, Stat_t);	1499	req->ptr2 = malloc (sizeof (Stat_t));
1307	if (!req->statdata)	1500	if (!req->ptr2)
1308	{	1501	{
1309	req_free (req);	1502	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");	1503	croak ("out of memory during aio_stat statdata allocation");
1311	}	1504	}
		1505
		1506	req->flags |= FLAG_PTR2_FREE;
1312		1507
1313	if (SvPOK (fh_or_path))	1508	if (SvPOK (fh_or_path))
1314	{	1509	{
1315	req->type = ix;	1510	req->type = ix;
1316	req->data = newSVsv (fh_or_path);	1511	req->sv1 = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	1512	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	1513	}
1319	else	1514	else
1320	{	1515	{
1321	req->type = REQ_FSTAT;	1516	req->type = REQ_FSTAT;
1322	req->fh = newSVsv (fh_or_path);	1517	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	1519	}
1325		1520
1326	REQ_SEND;	1521	REQ_SEND;
1327	}	1522	}
1328		1523
1329	void	1524	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1525	aio_unlink (pathname,callback=&PL_sv_undef)
1331	SV * pathname	1526	SV8 * pathname
1332	SV * callback	1527	SV * callback
1333	ALIAS:	1528	ALIAS:
1334	aio_unlink = REQ_UNLINK	1529	aio_unlink = REQ_UNLINK
1335	aio_rmdir = REQ_RMDIR	1530	aio_rmdir = REQ_RMDIR
1336	aio_readdir = REQ_READDIR	1531	aio_readdir = REQ_READDIR
1337	PPCODE:	1532	PPCODE:
1338	{	1533	{
1339	dREQ;	1534	dREQ;
1340		1535
1341	req->type = ix;	1536	req->type = ix;
1342	req->data = newSVsv (pathname);	1537	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1538	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
		1545	SV8 * pathname
		1546	UV mode
		1547	SV * callback
		1548	PPCODE:
		1549	{
		1550	dREQ;
1344		1551
		1552	req->type = REQ_MKDIR;
		1553	req->sv1 = newSVsv (pathname);
		1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1555	req->mode = mode;
		1556
1345	REQ_SEND;	1557	REQ_SEND;
1346	}	1558	}
1347		1559
1348	void	1560	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1350	SV * oldpath	1562	SV8 * oldpath
1351	SV * newpath	1563	SV8 * newpath
1352	SV * callback	1564	SV * callback
1353	ALIAS:	1565	ALIAS:
1354	aio_link = REQ_LINK	1566	aio_link = REQ_LINK
1355	aio_symlink = REQ_SYMLINK	1567	aio_symlink = REQ_SYMLINK
1356	aio_rename = REQ_RENAME	1568	aio_rename = REQ_RENAME
1357	PPCODE:	1569	PPCODE:
1358	{	1570	{
1359	dREQ;	1571	dREQ;
1360		1572
1361	req->type = ix;	1573	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1574	req->fh = newSVsv (oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1364	req->data = newSVsv (newpath);	1576	req->sv1 = newSVsv (newpath);
1365	req->dataptr = SvPVbyte_nolen (req->data);	1577	req->ptr1 = SvPVbyte_nolen (req->sv1);
1366		1578
1367	REQ_SEND;	1579	REQ_SEND;
1368	}	1580	}
1369		1581
1370	void	1582	void
		1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1584	SV8 * pathname
		1585	UV mode
		1586	UV dev
		1587	SV * callback
		1588	PPCODE:
		1589	{
		1590	dREQ;
		1591
		1592	req->type = REQ_MKNOD;
		1593	req->sv1 = newSVsv (pathname);
		1594	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1595	req->mode = (mode_t)mode;
		1596	req->offs = dev;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1602	aio_busy (delay,callback=&PL_sv_undef)
1372	double delay	1603	double delay
1373	SV * callback	1604	SV * callback
1374	PPCODE:	1605	PPCODE:
1375	{	1606	{
1376	dREQ;	1607	dREQ;
1377		1608
1378	req->type = REQ_BUSY;	1609	req->type = REQ_BUSY;
1379	req->fd = delay < 0. ? 0 : delay;	1610	req->int1 = delay < 0. ? 0 : delay;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1381		1612
1382	REQ_SEND;	1613	REQ_SEND;
1383	}	1614	}
1384		1615
1385	void	1616	void
…		…
1389	PPCODE:	1620	PPCODE:
1390	{	1621	{
1391	dREQ;	1622	dREQ;
1392		1623
1393	req->type = REQ_GROUP;	1624	req->type = REQ_GROUP;
		1625
1394	req_send (req);	1626	req_send (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397	}	1628	}
1398		1629
1399	void	1630	void
1400	aio_nop (callback=&PL_sv_undef)	1631	aio_nop (callback=&PL_sv_undef)
1401	SV * callback	1632	SV * callback
1402	PPCODE:	1633	PPCODE:
1403	{	1634	{
1404	dREQ;	1635	dREQ;
1405		1636
1406	req->type = REQ_NOP;	1637	req->type = REQ_NOP;
…		…
1435	PROTOTYPE:	1666	PROTOTYPE:
1436	CODE:	1667	CODE:
1437	while (nreqs)	1668	while (nreqs)
1438	{	1669	{
1439	poll_wait ();	1670	poll_wait ();
1440	poll_cb (0);	1671	poll_cb ();
1441	}	1672	}
1442		1673
1443	void	1674	int
1444	poll()	1675	poll()
1445	PROTOTYPE:	1676	PROTOTYPE:
1446	CODE:	1677	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();	1678	poll_wait ();
1450	poll_cb (0);	1679	RETVAL = poll_cb ();
1451	}	1680	OUTPUT:
		1681	RETVAL
1452		1682
1453	int	1683	int
1454	poll_fileno()	1684	poll_fileno()
1455	PROTOTYPE:	1685	PROTOTYPE:
1456	CODE:	1686	CODE:
…		…
1460		1690
1461	int	1691	int
1462	poll_cb(...)	1692	poll_cb(...)
1463	PROTOTYPE:	1693	PROTOTYPE:
1464	CODE:	1694	CODE:
1465	RETVAL = poll_cb (0);	1695	RETVAL = poll_cb ();
1466	OUTPUT:
1467	RETVAL
1468
1469	int
1470	poll_some(int max = 0)
1471	PROTOTYPE: $
1472	CODE:
1473	RETVAL = poll_cb (max);
1474	OUTPUT:	1696	OUTPUT:
1475	RETVAL	1697	RETVAL
1476		1698
1477	void	1699	void
1478	poll_wait()	1700	poll_wait()
1479	PROTOTYPE:	1701	PROTOTYPE:
1480	CODE:	1702	CODE:
1481	if (nreqs)
1482	poll_wait ();	1703	poll_wait ();
		1704
		1705	void
		1706	setsig (int signum = SIGIO)
		1707	PROTOTYPE: ;$
		1708	CODE:
		1709	{
		1710	if (block_sig_level)
		1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1712
		1713	LOCK (reslock);
		1714	main_tid = pthread_self ();
		1715	main_sig = signum;
		1716	UNLOCK (reslock);
		1717
		1718	if (main_sig && npending)
		1719	pthread_kill (main_tid, main_sig);
		1720	}
		1721
		1722	void
		1723	aio_block (SV *cb)
		1724	PROTOTYPE: &
		1725	PPCODE:
		1726	{
		1727	int count;
		1728
		1729	block_sig ();
		1730	PUSHMARK (SP);
		1731	PUTBACK;
		1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1733	SPAGAIN;
		1734	unblock_sig ();
		1735
		1736	if (SvTRUE (ERRSV))
		1737	croak (0);
		1738
		1739	XSRETURN (count);
		1740	}
1483		1741
1484	int	1742	int
1485	nreqs()	1743	nreqs()
1486	PROTOTYPE:	1744	PROTOTYPE:
1487	CODE:	1745	CODE:
…		…
1491		1749
1492	int	1750	int
1493	nready()	1751	nready()
1494	PROTOTYPE:	1752	PROTOTYPE:
1495	CODE:	1753	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1754	RETVAL = get_nready ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1755	OUTPUT:
1500	RETVAL	1756	RETVAL
1501		1757
1502	int	1758	int
1503	npending()	1759	npending()
1504	PROTOTYPE:	1760	PROTOTYPE:
1505	CODE:	1761	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);
1507	RETVAL = npending;	1762	RETVAL = get_npending ();
		1763	OUTPUT:
		1764	RETVAL
		1765
		1766	int
		1767	nthreads()
		1768	PROTOTYPE:
		1769	CODE:
		1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1771	RETVAL = started;
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1509	OUTPUT:	1773	OUTPUT:
1510	RETVAL	1774	RETVAL
1511		1775
1512	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1513		1777
…		…
1531	PPCODE:	1795	PPCODE:
1532	{	1796	{
1533	int i;	1797	int i;
1534	aio_req req;	1798	aio_req req;
1535		1799
		1800	if (main_sig && !block_sig_level)
		1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1802
1536	if (grp->fd == 2)	1803	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1805
1539	for (i = 1; i < items; ++i )	1806	for (i = 1; i < items; ++i )
1540	{	1807	{
1541	if (GIMME_V != G_VOID)	1808	if (GIMME_V != G_VOID)
…		…
1543		1810
1544	req = SvAIO_REQ (ST (i));	1811	req = SvAIO_REQ (ST (i));
1545		1812
1546	if (req)	1813	if (req)
1547	{	1814	{
1548	++grp->length;	1815	++grp->size;
1549	req->grp = grp;	1816	req->grp = grp;
1550		1817
1551	req->grp_prev = 0;	1818	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;	1819	req->grp_next = grp->grp_first;
1553		1820
…		…
1576	av = newAV ();	1843	av = newAV ();
1577		1844
1578	for (i = 1; i < items; ++i )	1845	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1846	av_push (av, newSVsv (ST (i)));
1580		1847
1581	SvREFCNT_dec (grp->data);	1848	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1849	grp->sv1 = (SV *)av;
1583	}	1850	}
1584		1851
1585	void	1852	void
1586	errno (aio_req grp, int errorno = errno)	1853	errno (aio_req grp, int errorno = errno)
1587	CODE:	1854	CODE:
1588	grp->errorno = errorno;	1855	grp->errorno = errorno;
1589		1856
1590	void	1857	void
1591	limit (aio_req grp, int limit)	1858	limit (aio_req grp, int limit)
1592	CODE:	1859	CODE:
1593	grp->fd2 = limit;	1860	grp->int2 = limit;
1594	aio_grp_feed (grp);	1861	aio_grp_feed (grp);
1595		1862
1596	void	1863	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1864	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1865	CODE:
1599	{	1866	{
1600	SvREFCNT_dec (grp->fh2);	1867	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1868	grp->sv2 = newSVsv (callback);
1602		1869
1603	if (grp->fd2 <= 0)	1870	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1871	grp->int2 = 2;
1605		1872
1606	aio_grp_feed (grp);	1873	aio_grp_feed (grp);
1607	}	1874	}
1608		1875

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