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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.96 by root, Sat Dec 23 04:49:37 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"
…		…
16	#include "autoconf/config.h"	17	#include "autoconf/config.h"
17		18
18	#include <pthread.h>	19	#include <pthread.h>
19		20
20	#include <stddef.h>	21	#include <stddef.h>
		22	#include <stdlib.h>
21	#include <errno.h>	23	#include <errno.h>
22	#include <sys/time.h>	24	#include <sys/time.h>
23	#include <sys/select.h>	25	#include <sys/select.h>
24	#include <sys/types.h>	26	#include <sys/types.h>
25	#include <sys/stat.h>	27	#include <sys/stat.h>
…		…
42	# else	44	# else
43	# error sendfile support requested but not available	45	# error sendfile support requested but not available
44	# endif	46	# endif
45	#endif	47	#endif
46		48
		49	/* number of seconds after which idle threads exit */
		50	#define IDLE_TIMEOUT 10
		51
47	/* used for struct dirent, AIX doesn't provide it */	52	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	53	#ifndef NAME_MAX
49	# define NAME_MAX 4096	54	# define NAME_MAX 4096
		55	#endif
		56
		57	#ifndef PTHREAD_STACK_MIN
		58	/* care for broken platforms, e.g. windows */
		59	# define PTHREAD_STACK_MIN 16384
50	#endif	60	#endif
51		61
52	#if __ia64	62	#if __ia64
53	# define STACKSIZE 65536	63	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN	65	# define STACKSIZE PTHREAD_STACK_MIN
56	#else	66	#else
57	# define STACKSIZE 16384	67	# define STACKSIZE 16384
58	#endif	68	#endif
59		69
		70	/* wether word reads are potentially non-atomic.
		71	* this is conservatice, likely most arches this runs
		72	* on have atomic word read/writes.
		73	*/
		74	#ifndef WORDACCESS_UNSAFE
		75	# if __i386 || __x86_64
		76	# define WORDACCESS_UNSAFE 0
		77	# else
		78	# define WORDACCESS_UNSAFE 1
		79	# endif
		80	#endif
		81
60	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
62		84
63	#define dBUF \	85	#define dBUF \
		86	char *aio_buf; \
		87	LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		89	UNLOCK (wrklock); \
65	if (!aio_buf) \	90	if (!aio_buf) \
66	return -1;	91	return -1;
67		92
68	#define fBUF free (aio_buf)	93	typedef SV SV8; /* byte-sv, used for argument-checking */
69		94
70	enum {	95	enum {
71	REQ_QUIT,	96	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,	99	REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
78	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
80	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	106	REQ_BUSY,
82	};	107	};
83		108
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
86		111
87	typedef struct aio_cb	112	typedef struct aio_cb
88	{	113	{
89	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
90		115
91	SV *data, *callback;	116	SV *callback, *fh;
92	SV *fh, *fh2;	117	SV *sv1, *sv2;
93	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
94	Stat_t *statdata;
95	off_t offset;	119	off_t offs;
96	size_t length;	120	size_t size;
97	ssize_t result;	121	ssize_t result;
98		122
99	STRLEN dataoffset;	123	STRLEN stroffset;
100	int type;	124	int type;
101	int fd, fd2;	125	int int1, int2;
102	int errorno;	126	int errorno;
103	mode_t mode; /* open */	127	mode_t mode; /* open */
104		128
105	unsigned char flags;	129	unsigned char flags;
106	unsigned char pri;	130	unsigned char pri;
…		…
108	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;	134	} aio_cb;
111		135
112	enum {	136	enum {
113	FLAG_CANCELLED = 0x01,	137	FLAG_CANCELLED = 0x01, /* request was cancelled */
		138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
114	};	140	};
115		141
116	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
117	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
118		144
…		…
123	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	152	};
127		153
		154	#define AIO_TICKS ((1000000 + 1023) >> 10)
		155
		156	static unsigned int max_poll_time = 0;
		157	static unsigned int max_poll_reqs = 0;
		158
		159	/* calculcate time difference in ~1/AIO_TICKS of a second */
		160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		161	{
		162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		164	}
		165
		166	static pthread_t main_tid;
		167	static int main_sig;
		168	static int block_sig_level;
		169
		170	void block_sig ()
		171	{
		172	sigset_t ss;
		173
		174	if (block_sig_level++)
		175	return;
		176
		177	if (!main_sig)
		178	return;
		179
		180	sigemptyset (&ss);
		181	sigaddset (&ss, main_sig);
		182	pthread_sigmask (SIG_BLOCK, &ss, 0);
		183	}
		184
		185	void unblock_sig ()
		186	{
		187	sigset_t ss;
		188
		189	if (--block_sig_level)
		190	return;
		191
		192	if (!main_sig)
		193	return;
		194
		195	sigemptyset (&ss);
		196	sigaddset (&ss, main_sig);
		197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		198	}
		199
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		201
130	static int started, wanted;	202	static unsigned int started, idle, wanted;
131	static volatile int nreqs;
132	static int max_outstanding = 1<<30;
133	static int respipe [2];
134		203
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else	206	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif	208	#endif
140		209
		210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		212
		213	/* worker threads management */
		214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		215
		216	typedef struct worker {
		217	/* locked by wrklock */
		218	struct worker *prev, *next;
		219
		220	pthread_t tid;
		221
		222	/* locked by reslock, reqlock or wrklock */
		223	aio_req req; /* currently processed request */
		224	void *dbuf;
		225	DIR *dirp;
		226	} worker;
		227
		228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		229
		230	static void worker_clear (worker *wrk)
		231	{
		232	if (wrk->dirp)
		233	{
		234	closedir (wrk->dirp);
		235	wrk->dirp = 0;
		236	}
		237
		238	if (wrk->dbuf)
		239	{
		240	free (wrk->dbuf);
		241	wrk->dbuf = 0;
		242	}
		243	}
		244
		245	static void worker_free (worker *wrk)
		246	{
		247	wrk->next->prev = wrk->prev;
		248	wrk->prev->next = wrk->next;
		249
		250	free (wrk);
		251	}
		252
		253	static volatile unsigned int nreqs, nready, npending;
		254	static volatile unsigned int max_idle = 4;
		255	static volatile unsigned int max_outstanding = 0xffffffff;
		256	static int respipe [2];
		257
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
		261
		262	#if WORDACCESS_UNSAFE
		263
		264	static unsigned int get_nready ()
		265	{
		266	unsigned int retval;
		267
		268	LOCK (reqlock);
		269	retval = nready;
		270	UNLOCK (reqlock);
		271
		272	return retval;
		273	}
		274
		275	static unsigned int get_npending ()
		276	{
		277	unsigned int retval;
		278
		279	LOCK (reslock);
		280	retval = npending;
		281	UNLOCK (reslock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_nthreads ()
		287	{
		288	unsigned int retval;
		289
		290	LOCK (wrklock);
		291	retval = started;
		292	UNLOCK (wrklock);
		293
		294	return retval;
		295	}
		296
		297	#else
		298
		299	# define get_nready() nready
		300	# define get_npending() npending
		301	# define get_nthreads() started
		302
		303	#endif
144		304
145	/*	305	/*
146	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
194	}	354	}
195		355
196	abort ();	356	abort ();
197	}	357	}
198		358
		359	static int poll_cb ();
199	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
200	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
201		363
202	/* must be called at most once */	364	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
204	{	366	{
205	if (!req->self)	367	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	386	}
225		387
226	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
227	{	389	{
		390	block_sig ();
		391
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
229	{	393	{
230	int old_len = grp->length;	394	int old_len = grp->size;
231		395
232	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
233	{	397	{
234	dSP;	398	dSP;
235		399
236	ENTER;	400	ENTER;
237	SAVETMPS;	401	SAVETMPS;
238	PUSHMARK (SP);	402	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	404	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	406	SPAGAIN;
243	FREETMPS;	407	FREETMPS;
244	LEAVE;	408	LEAVE;
245	}	409	}
246		410
247	/* stop if no progress has been made */	411	/* stop if no progress has been made */
248	if (old_len == grp->length)	412	if (old_len == grp->size)
249	{	413	{
250	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
251	grp->fh2 = 0;	415	grp->sv2 = 0;
252	break;	416	break;
253	}	417	}
254	}	418	}
		419
		420	unblock_sig ();
255	}	421	}
256		422
257	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
258	{	424	{
259	--grp->length;	425	--grp->size;
260		426
261	/* call feeder, if applicable */	427	/* call feeder, if applicable */
262	aio_grp_feed (grp);	428	aio_grp_feed (grp);
263		429
264	/* finish, if done */	430	/* finish, if done */
265	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
266	{	432	{
		433	block_sig ();
		434
267	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
268	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
269	}	444	}
270	}	445	}
271		446
272	static void poll_wait ()
273	{
274	fd_set rfd;
275
276	while (nreqs)
277	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
298	{	448	{
299	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
300		453
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	455	{
303	errno = req->errorno;
304
305	ENTER;	456	ENTER;
306	SAVETMPS;	457	SAVETMPS;
307	PUSHMARK (SP);	458	PUSHMARK (SP);
308	EXTEND (SP, 1);	459	EXTEND (SP, 1);
309		460
…		…
313	{	464	{
314	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
315		466
316	if (req->result >= 0)	467	if (req->result >= 0)
317	{	468	{
		469	int i;
318	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
319	AV *av = newAV ();	471	AV *av = newAV ();
320		472
321	while (req->result)	473	av_extend (av, req->result - 1);
		474
		475	for (i = 0; i < req->result; ++i)
322	{	476	{
323	SV *sv = newSVpv (buf, 0);	477	SV *sv = newSVpv (buf, 0);
324		478
325	av_push (av, sv);	479	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	480	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	481	}
329		482
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	483	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	484	}
332		485
…		…
342	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
343	PUTBACK;	496	PUTBACK;
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345	SPAGAIN;	498	SPAGAIN;
346		499
347	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
348
349	PUSHMARK (SP);	501	PUSHMARK (SP);
350	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
351	}	503	}
352	break;	504	break;
353		505
354	case REQ_GROUP:	506	case REQ_GROUP:
355	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
356		508
357	if (req->data)	509	if (req->sv1)
358	{	510	{
359	int i;	511	int i;
360	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
361		513
362	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
365	}	517	}
…		…
367		519
368	case REQ_NOP:	520	case REQ_NOP:
369	case REQ_BUSY:	521	case REQ_BUSY:
370	break;	522	break;
371		523
		524	case REQ_READLINK:
		525	if (req->result > 0)
		526	{
		527	SvCUR_set (req->sv1, req->result);
		528	*SvEND (req->sv1) = 0;
		529	PUSHs (req->sv1);
		530	}
		531	break;
		532
		533	case REQ_STAT:
		534	case REQ_LSTAT:
		535	case REQ_FSTAT:
		536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		537	PL_laststatval = req->result;
		538	PL_statcache = *(Stat_t *)(req->ptr2);
		539	PUSHs (sv_2mortal (newSViv (req->result)));
		540	break;
		541
		542	case REQ_READ:
		543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		544	*SvEND (req->sv1) = 0;
		545	PUSHs (sv_2mortal (newSViv (req->result)));
		546	break;
		547
372	default:	548	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	550	break;
375	}	551	}
376		552
		553	errno = req->errorno;
377		554
378	PUTBACK;	555	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
380	SPAGAIN;	557	SPAGAIN;
381		558
…		…
395	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
396		573
397	aio_grp_dec (grp);	574	aio_grp_dec (grp);
398	}	575	}
399		576
400	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	578	}
406		579
407	static void req_free (aio_req req)	580	static void req_free (aio_req req)
408	{	581	{
409	if (req->self)	582	if (req->self)
410	{	583	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
413	}	586	}
414		587
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420		592
421	if (req->type == REQ_READDIR && req->result >= 0)	593	if (req->flags & FLAG_PTR2_FREE)
422	free (req->data2ptr);	594	free (req->ptr2);
423		595
424	Safefree (req);	596	Safefree (req);
425	}	597	}
426		598
		599	static void req_cancel_subs (aio_req grp)
		600	{
		601	aio_req sub;
		602
		603	if (grp->type != REQ_GROUP)
		604	return;
		605
		606	SvREFCNT_dec (grp->sv2);
		607	grp->sv2 = 0;
		608
		609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		610	req_cancel (sub);
		611	}
		612
427	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
428	{	614	{
429	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
430		616
431	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
432	{
433	aio_req sub;
434
435	for (sub = req->grp_first; sub; sub = sub->grp_next)
436	req_cancel (sub);
437	}
438	}
439
440	static int poll_cb ()
441	{
442	dSP;
443	int count = 0;
444	int do_croak = 0;
445	aio_req req;
446
447	for (;;)
448	{
449	pthread_mutex_lock (&reslock);
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{
454	if (!res_queue.size)
455	{
456	/* read any signals sent by the worker threads */
457	char buf [32];
458	while (read (respipe [0], buf, 32) == 32)
459	;
460	}
461	}
462
463	pthread_mutex_unlock (&reslock);
464
465	if (!req)
466	break;
467
468	--nreqs;
469
470	if (req->type == REQ_QUIT)
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}
499
500	return count;
501	}	618	}
502		619
503	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
504		621
505	static void start_thread (void)	622	static void start_thread (void)
506	{	623	{
507	sigset_t fullsigset, oldsigset;	624	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;	625	pthread_attr_t attr;
		626
		627	worker *wrk = calloc (1, sizeof (worker));
		628
		629	if (!wrk)
		630	croak ("unable to allocate worker thread data");
510		631
511	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		635	#ifdef PTHREAD_SCOPE_PROCESS
		636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		637	#endif
514		638
515	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
		640
		641	LOCK (wrklock);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
517		643
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		645	{
		646	wrk->prev = &wrk_first;
		647	wrk->next = wrk_first.next;
		648	wrk_first.next->prev = wrk;
		649	wrk_first.next = wrk;
519	started++;	650	++started;
		651	}
		652	else
		653	free (wrk);
520		654
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);	655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
		656	UNLOCK (wrklock);
		657	}
		658
		659	static void maybe_start_thread ()
		660	{
		661	if (get_nthreads () >= wanted)
		662	return;
		663
		664	/* todo: maybe use idle here, but might be less exact */
		665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		666	return;
		667
		668	start_thread ();
522	}	669	}
523		670
524	static void req_send (aio_req req)	671	static void req_send (aio_req req)
525	{	672	{
526	while (started < wanted && nreqs >= started)	673	block_sig ();
527	start_thread ();
528		674
529	++nreqs;	675	++nreqs;
530		676
531	pthread_mutex_lock (&reqlock);	677	LOCK (reqlock);
		678	++nready;
532	reqq_push (&req_queue, req);	679	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);	681	UNLOCK (reqlock);
535		682
536	if (nreqs > max_outstanding)	683	unblock_sig ();
537	for (;;)
538	{
539	poll_cb ();
540		684
541	if (nreqs <= max_outstanding)	685	maybe_start_thread ();
542	break;
543
544	poll_wait ();
545	}
546	}	686	}
547		687
548	static void end_thread (void)	688	static void end_thread (void)
549	{	689	{
550	aio_req req;	690	aio_req req;
…		…
552	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
553		693
554	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;	695	req->pri = PRI_MAX + PRI_BIAS;
556		696
557	req_send (req);	697	LOCK (reqlock);
		698	reqq_push (&req_queue, req);
		699	pthread_cond_signal (&reqwait);
		700	UNLOCK (reqlock);
		701
		702	LOCK (wrklock);
		703	--started;
		704	UNLOCK (wrklock);
		705	}
		706
		707	static void set_max_idle (int nthreads)
		708	{
		709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		710	max_idle = nthreads <= 0 ? 1 : nthreads;
		711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
558	}	712	}
559		713
560	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
561	{	715	{
562	if (wanted < nthreads)	716	if (wanted < nthreads)
563	wanted = nthreads;	717	wanted = nthreads;
564	}	718	}
565		719
566	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
567	{	721	{
568	int cur = started;
569
570	if (wanted > nthreads)	722	if (wanted > nthreads)
571	wanted = nthreads;	723	wanted = nthreads;
572		724
573	while (cur > wanted)	725	while (started > wanted)
		726	end_thread ();
		727	}
		728
		729	static void poll_wait ()
		730	{
		731	fd_set rfd;
		732
		733	while (nreqs)
574	{	734	{
		735	int size;
		736	if (WORDACCESS_UNSAFE) LOCK (reslock);
		737	size = res_queue.size;
		738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		739
		740	if (size)
		741	return;
		742
575	end_thread ();	743	maybe_start_thread ();
576	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
577	}	749	}
		750	}
578		751
579	while (started > wanted)	752	static int poll_cb ()
		753	{
		754	dSP;
		755	int count = 0;
		756	int maxreqs = max_poll_reqs;
		757	int do_croak = 0;
		758	struct timeval tv_start, tv_now;
		759	aio_req req;
		760
		761	if (max_poll_time)
		762	gettimeofday (&tv_start, 0);
		763
		764	block_sig ();
		765
		766	for (;;)
580	{	767	{
		768	for (;;)
		769	{
		770	maybe_start_thread ();
		771
		772	LOCK (reslock);
		773	req = reqq_shift (&res_queue);
		774
		775	if (req)
		776	{
		777	--npending;
		778
		779	if (!res_queue.size)
		780	{
		781	/* read any signals sent by the worker threads */
		782	char buf [4];
		783	while (read (respipe [0], buf, 4) == 4)
		784	;
		785	}
		786	}
		787
		788	UNLOCK (reslock);
		789
		790	if (!req)
		791	break;
		792
		793	--nreqs;
		794
		795	if (req->type == REQ_GROUP && req->size)
		796	{
		797	req->int1 = 1; /* mark request as delayed */
		798	continue;
		799	}
		800	else
		801	{
		802	if (!req_invoke (req))
		803	{
		804	req_free (req);
		805	unblock_sig ();
		806	croak (0);
		807	}
		808
		809	count++;
		810	}
		811
		812	req_free (req);
		813
		814	if (maxreqs && !--maxreqs)
		815	break;
		816
		817	if (max_poll_time)
		818	{
		819	gettimeofday (&tv_now, 0);
		820
		821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		822	break;
		823	}
		824	}
		825
		826	if (nreqs <= max_outstanding)
		827	break;
		828
581	poll_wait ();	829	poll_wait ();
582	poll_cb ();	830
		831	++maxreqs;
583	}	832	}
		833
		834	unblock_sig ();
		835	return count;
584	}	836	}
585		837
586	static void create_pipe ()	838	static void create_pipe ()
587	{	839	{
588	if (pipe (respipe))	840	if (pipe (respipe))
…		…
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{	865	{
614	ssize_t res;	866	ssize_t res;
615	off_t ooffset;	867	off_t ooffset;
616		868
617	pthread_mutex_lock (&preadwritelock);	869	LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	870	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	871	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	872	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	873	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	874	UNLOCK (preadwritelock);
623		875
624	return res;	876	return res;
625	}	877	}
626		878
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{	880	{
629	ssize_t res;	881	ssize_t res;
630	off_t ooffset;	882	off_t ooffset;
631		883
632	pthread_mutex_lock (&preadwritelock);	884	LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	885	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	886	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	887	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	888	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	889	UNLOCK (preadwritelock);
638		890
639	return res;	891	return res;
640	}	892	}
641	#endif	893	#endif
642		894
643	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	896	# define fdatasync fsync
645	#endif	897	#endif
646		898
647	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		901
650	static ssize_t readahead (int fd, off_t offset, size_t count)	902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
651	{	903	{
652	dBUF;	904	dBUF;
653		905
654	while (count > 0)	906	while (count > 0)
655	{	907	{
…		…
658	pread (fd, aio_buf, len, offset);	910	pread (fd, aio_buf, len, offset);
659	offset += len;	911	offset += len;
660	count -= len;	912	count -= len;
661	}	913	}
662		914
663	fBUF;
664
665	errno = 0;	915	errno = 0;
666	}	916	}
		917
667	#endif	918	#endif
668		919
669	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
671		922
…		…
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{	926	{
676	struct dirent *e;	927	struct dirent *e;
677	int errorno;	928	int errorno;
678		929
679	pthread_mutex_lock (&readdirlock);	930	LOCK (readdirlock);
680		931
681	e = readdir (dirp);	932	e = readdir (dirp);
682	errorno = errno;	933	errorno = errno;
683		934
684	if (e)	935	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	938	strcpy (ent->d_name, e->d_name);
688	}	939	}
689	else	940	else
690	*res = 0;	941	*res = 0;
691		942
692	pthread_mutex_unlock (&readdirlock);	943	UNLOCK (readdirlock);
693		944
694	errno = errorno;	945	errno = errorno;
695	return e ? 0 : -1;	946	return e ? 0 : -1;
696	}	947	}
697	#endif	948	#endif
698		949
699	/* sendfile always needs emulation */	950	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
701	{	952	{
702	ssize_t res;	953	ssize_t res;
703		954
704	if (!count)	955	if (!count)
705	return 0;	956	return 0;
…		…
716	{	967	{
717	off_t sbytes;	968	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		970
720	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	973	res = sbytes;
723	}	974	}
724		975
725	# elif __hpux	976	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		1033
783	offset += cnt;	1034	offset += cnt;
784	res += cnt;	1035	res += cnt;
785	count -= cnt;	1036	count -= cnt;
786	}	1037	}
787
788	fBUF;
789	}	1038	}
790		1039
791	return res;	1040	return res;
792	}	1041	}
793		1042
794	/* read a full directory */	1043	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)	1044	static void scandir_ (aio_req req, worker *self)
796	{	1045	{
797	DIR *dirp;	1046	DIR *dirp;
798	union	1047	union
799	{	1048	{
800	struct dirent d;	1049	struct dirent d;
…		…
805	int memlen = 4096;	1054	int memlen = 4096;
806	int memofs = 0;	1055	int memofs = 0;
807	int res = 0;	1056	int res = 0;
808	int errorno;	1057	int errorno;
809		1058
810	dirp = opendir (path);	1059	LOCK (wrklock);
811	if (!dirp)	1060	self->dirp = dirp = opendir (req->ptr1);
812	return -1;
813
814	u = malloc (sizeof (*u));	1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
815	names = malloc (memlen);	1063	req->ptr2 = names = malloc (memlen);
		1064	UNLOCK (wrklock);
816		1065
817	if (u && names)	1066	if (dirp && u && names)
818	for (;;)	1067	for (;;)
819	{	1068	{
820	errno = 0;	1069	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	1070	readdir_r (dirp, &u->d, &entp);
822		1071
…		…
832	res++;	1081	res++;
833		1082
834	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
835	{	1084	{
836	memlen *= 2;	1085	memlen *= 2;
		1086	LOCK (wrklock);
837	names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
		1088	UNLOCK (wrklock);
		1089
838	if (!names)	1090	if (!names)
839	break;	1091	break;
840	}	1092	}
841		1093
842	memcpy (names + memofs, name, len);	1094	memcpy (names + memofs, name, len);
843	memofs += len;	1095	memofs += len;
844	}	1096	}
845	}	1097	}
846		1098
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)	1099	if (errno)
		1100	res = -1;
		1101
		1102	req->result = res;
		1103	}
		1104
		1105	/*****************************************************************************/
		1106
		1107	static void *aio_proc (void *thr_arg)
		1108	{
		1109	aio_req req;
		1110	struct timespec ts;
		1111	worker *self = (worker *)thr_arg;
		1112
		1113	/* try to distribute timeouts somewhat evenly */
		1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1115	* (1000000000UL / 1024UL);
		1116
		1117	for (;;)
852	{	1118	{
853	free (names);	1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
854	errno = errorno;
855	res = -1;
856	}
857		1120
858	*namesp = (void *)names;	1121	LOCK (reqlock);
859	return res;
860	}
861
862	/*****************************************************************************/
863
864	static void *aio_proc (void *thr_arg)
865	{
866	aio_req req;
867	int type;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872		1122
873	for (;;)	1123	for (;;)
874	{	1124	{
875	req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
876		1126
877	if (req)	1127	if (req)
878	break;	1128	break;
879		1129
		1130	++idle;
		1131
		1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1133	== ETIMEDOUT)
		1134	{
		1135	if (idle > max_idle)
		1136	{
		1137	--idle;
		1138	UNLOCK (reqlock);
		1139	LOCK (wrklock);
		1140	--started;
		1141	UNLOCK (wrklock);
		1142	goto quit;
		1143	}
		1144
		1145	/* we are allowed to idle, so do so without any timeout */
880	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
881	}	1151	}
882		1152
883	pthread_mutex_unlock (&reqlock);	1153	--nready;
		1154
		1155	UNLOCK (reqlock);
884		1156
885	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1158
888	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1160	switch (req->type)
890	{	1161	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
893		1164
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
896		1167
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
900		1171
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1176	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1177	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1178	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1179	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1180	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
908		1181
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1182	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1183	case REQ_FSYNC: req->result = fsync (req->int1); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1184	case REQ_READDIR: scandir_ (req, self); break;
912		1185
913	case REQ_BUSY:	1186	case REQ_BUSY:
914	{	1187	{
915	struct timeval tv;	1188	struct timeval tv;
916		1189
917	tv.tv_sec = req->fd;	1190	tv.tv_sec = req->int1;
918	tv.tv_usec = req->fd2;	1191	tv.tv_usec = req->int2;
919		1192
920	req->result = select (0, 0, 0, 0, &tv);	1193	req->result = select (0, 0, 0, 0, &tv);
921	}	1194	}
922		1195
923	case REQ_GROUP:	1196	case REQ_GROUP:
924	case REQ_NOP:	1197	case REQ_NOP:
		1198	break;
		1199
925	case REQ_QUIT:	1200	case REQ_QUIT:
926	break;	1201	goto quit;
927		1202
928	default:	1203	default:
929	req->result = ENOSYS;	1204	req->result = ENOSYS;
930	break;	1205	break;
931	}	1206	}
932		1207
933	req->errorno = errno;	1208	req->errorno = errno;
934		1209
935	pthread_mutex_lock (&reslock);	1210	LOCK (reslock);
		1211
		1212	++npending;
936		1213
937	if (!reqq_push (&res_queue, req))	1214	if (!reqq_push (&res_queue, req))
		1215	{
938	/* write a dummy byte to the pipe so fh becomes ready */	1216	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1217	write (respipe [1], &respipe, 1);
940		1218
941	pthread_mutex_unlock (&reslock);	1219	/* optionally signal the main thread asynchronously */
		1220	if (main_sig)
		1221	pthread_kill (main_tid, main_sig);
		1222	}
		1223
		1224	self->req = 0;
		1225	worker_clear (self);
		1226
		1227	UNLOCK (reslock);
942	}	1228	}
943	while (type != REQ_QUIT);	1229
		1230	quit:
		1231	LOCK (wrklock);
		1232	worker_free (self);
		1233	UNLOCK (wrklock);
944		1234
945	return 0;	1235	return 0;
946	}	1236	}
947		1237
948	/*****************************************************************************/	1238	/*****************************************************************************/
949		1239
950	static void atfork_prepare (void)	1240	static void atfork_prepare (void)
951	{	1241	{
952	pthread_mutex_lock (&reqlock);	1242	LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1243	LOCK (reqlock);
		1244	LOCK (reslock);
954	#if !HAVE_PREADWRITE	1245	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1246	LOCK (preadwritelock);
956	#endif	1247	#endif
957	#if !HAVE_READDIR_R	1248	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1249	LOCK (readdirlock);
959	#endif	1250	#endif
960	}	1251	}
961		1252
962	static void atfork_parent (void)	1253	static void atfork_parent (void)
963	{	1254	{
964	#if !HAVE_READDIR_R	1255	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1256	UNLOCK (readdirlock);
966	#endif	1257	#endif
967	#if !HAVE_PREADWRITE	1258	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1259	UNLOCK (preadwritelock);
969	#endif	1260	#endif
970	pthread_mutex_unlock (&reslock);	1261	UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1262	UNLOCK (reqlock);
		1263	UNLOCK (wrklock);
972	}	1264	}
973		1265
974	static void atfork_child (void)	1266	static void atfork_child (void)
975	{	1267	{
976	aio_req prv;	1268	aio_req prv;
977
978	started = 0;
979		1269
980	while (prv = reqq_shift (&req_queue))	1270	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1271	req_free (prv);
982		1272
983	while (prv = reqq_shift (&res_queue))	1273	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1274	req_free (prv);
985		1275
		1276	while (wrk_first.next != &wrk_first)
		1277	{
		1278	worker *wrk = wrk_first.next;
		1279
		1280	if (wrk->req)
		1281	req_free (wrk->req);
		1282
		1283	worker_clear (wrk);
		1284	worker_free (wrk);
		1285	}
		1286
		1287	started = 0;
		1288	idle = 0;
		1289	nreqs = 0;
		1290	nready = 0;
		1291	npending = 0;
		1292
986	close (respipe [0]);	1293	close (respipe [0]);
987	close (respipe [1]);	1294	close (respipe [1]);
988	create_pipe ();	1295	create_pipe ();
989		1296
990	atfork_parent ();	1297	atfork_parent ();
…		…
1016	PROTOTYPES: ENABLE	1323	PROTOTYPES: ENABLE
1017		1324
1018	BOOT:	1325	BOOT:
1019	{	1326	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1327	HV *stash = gv_stashpv ("IO::AIO", 1);
		1328
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1331	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1332	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1333	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1334	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1335	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1024		1336
1025	create_pipe ();	1337	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1027	}	1339	}
1028		1340
1029	void	1341	void
1030	min_parallel (nthreads)	1342	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	1343	PROTOTYPE: $
		1344	CODE:
		1345	max_poll_reqs = nreqs;
1033		1346
1034	void	1347	void
1035	max_parallel (nthreads)	1348	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	1349	PROTOTYPE: $
		1350	CODE:
		1351	max_poll_time = nseconds * AIO_TICKS;
		1352
		1353	void
		1354	min_parallel (int nthreads)
		1355	PROTOTYPE: $
		1356
		1357	void
		1358	max_parallel (int nthreads)
		1359	PROTOTYPE: $
		1360
		1361	void
		1362	max_idle (int nthreads)
		1363	PROTOTYPE: $
		1364	CODE:
		1365	set_max_idle (nthreads);
1038		1366
1039	int	1367	int
1040	max_outstanding (nreqs)	1368	max_outstanding (int maxreqs)
1041	int nreqs	1369	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1370	CODE:
1044	RETVAL = max_outstanding;	1371	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1372	max_outstanding = maxreqs;
		1373	OUTPUT:
		1374	RETVAL
1046		1375
1047	void	1376	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1049	SV * pathname	1378	SV8 * pathname
1050	int flags	1379	int flags
1051	int mode	1380	int mode
1052	SV * callback	1381	SV * callback
1053	PROTOTYPE: $$$;$	1382	PROTOTYPE: $$$;$
1054	PPCODE:	1383	PPCODE:
1055	{	1384	{
1056	dREQ;	1385	dREQ;
1057		1386
1058	req->type = REQ_OPEN;	1387	req->type = REQ_OPEN;
1059	req->data = newSVsv (pathname);	1388	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	1390	req->int1 = flags;
1062	req->mode = mode;	1391	req->mode = mode;
1063		1392
1064	REQ_SEND;	1393	REQ_SEND;
1065	}	1394	}
1066		1395
…		…
1076	PPCODE:	1405	PPCODE:
1077	{	1406	{
1078	dREQ;	1407	dREQ;
1079		1408
1080	req->type = ix;	1409	req->type = ix;
1081	req->fh = newSVsv (fh);	1410	req->fh = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083		1412
1084	REQ_SEND (req);	1413	REQ_SEND (req);
1085	}	1414	}
1086		1415
1087	void	1416	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1089	SV * fh	1418	SV * fh
1090	UV offset	1419	UV offset
1091	UV length	1420	UV length
1092	SV * data	1421	SV8 * data
1093	UV dataoffset	1422	UV dataoffset
1094	SV * callback	1423	SV * callback
1095	ALIAS:	1424	ALIAS:
1096	aio_read = REQ_READ	1425	aio_read = REQ_READ
1097	aio_write = REQ_WRITE	1426	aio_write = REQ_WRITE
1098	PROTOTYPE: $$$$$;$	1427	PROTOTYPE: $$$$$;$
1099	PPCODE:	1428	PPCODE:
1100	{	1429	{
1101	aio_req req;
1102	STRLEN svlen;	1430	STRLEN svlen;
1103	char *svptr = SvPVbyte (data, svlen);	1431	char *svptr = SvPVbyte (data, svlen);
1104		1432
1105	SvUPGRADE (data, SVt_PV);	1433	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);	1434	SvPOK_on (data);
…		…
1118	length = svlen - dataoffset;	1446	length = svlen - dataoffset;
1119	}	1447	}
1120	else	1448	else
1121	{	1449	{
1122	/* read: grow scalar as necessary */	1450	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, length + dataoffset);	1451	svptr = SvGROW (data, length + dataoffset + 1);
1124	}	1452	}
1125		1453
1126	if (length < 0)	1454	if (length < 0)
1127	croak ("length must not be negative");	1455	croak ("length must not be negative");
1128		1456
1129	{	1457	{
1130	dREQ;	1458	dREQ;
1131		1459
1132	req->type = ix;	1460	req->type = ix;
1133	req->fh = newSVsv (fh);	1461	req->fh = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));	1463	: IoOFP (sv_2io (fh)));
1136	req->offset = offset;	1464	req->offs = offset;
1137	req->length = length;	1465	req->size = length;
1138	req->data = SvREFCNT_inc (data);	1466	req->sv1 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1467	req->ptr1 = (char *)svptr + dataoffset;
		1468	req->stroffset = dataoffset;
1140		1469
1141	if (!SvREADONLY (data))	1470	if (!SvREADONLY (data))
1142	{	1471	{
1143	SvREADONLY_on (data);	1472	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1473	req->flags |= FLAG_SV1_RO_OFF;
1145	}	1474	}
1146		1475
1147	REQ_SEND;	1476	REQ_SEND;
1148	}	1477	}
		1478	}
		1479
		1480	void
		1481	aio_readlink (path,callback=&PL_sv_undef)
		1482	SV8 * path
		1483	SV * callback
		1484	PROTOTYPE: $$;$
		1485	PPCODE:
		1486	{
		1487	SV *data;
		1488	dREQ;
		1489
		1490	data = newSV (NAME_MAX);
		1491	SvPOK_on (data);
		1492
		1493	req->type = REQ_READLINK;
		1494	req->fh = newSVsv (path);
		1495	req->ptr2 = SvPVbyte_nolen (req->fh);
		1496	req->sv1 = data;
		1497	req->ptr1 = SvPVbyte_nolen (data);
		1498
		1499	REQ_SEND;
1149	}	1500	}
1150		1501
1151	void	1502	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1153	SV * out_fh	1504	SV * out_fh
…		…
1159	PPCODE:	1510	PPCODE:
1160	{	1511	{
1161	dREQ;	1512	dREQ;
1162		1513
1163	req->type = REQ_SENDFILE;	1514	req->type = REQ_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1515	req->fh = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166	req->fh2 = newSVsv (in_fh);	1517	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168	req->offset = in_offset;	1519	req->offs = in_offset;
1169	req->length = length;	1520	req->size = length;
1170		1521
1171	REQ_SEND;	1522	REQ_SEND;
1172	}	1523	}
1173		1524
1174	void	1525	void
…		…
1181	PPCODE:	1532	PPCODE:
1182	{	1533	{
1183	dREQ;	1534	dREQ;
1184		1535
1185	req->type = REQ_READAHEAD;	1536	req->type = REQ_READAHEAD;
1186	req->fh = newSVsv (fh);	1537	req->fh = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188	req->offset = offset;	1539	req->offs = offset;
1189	req->length = length;	1540	req->size = length;
1190		1541
1191	REQ_SEND;	1542	REQ_SEND;
1192	}	1543	}
1193		1544
1194	void	1545	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1546	aio_stat (fh_or_path,callback=&PL_sv_undef)
1196	SV * fh_or_path	1547	SV8 * fh_or_path
1197	SV * callback	1548	SV * callback
1198	ALIAS:	1549	ALIAS:
1199	aio_stat = REQ_STAT	1550	aio_stat = REQ_STAT
1200	aio_lstat = REQ_LSTAT	1551	aio_lstat = REQ_LSTAT
1201	PPCODE:	1552	PPCODE:
1202	{	1553	{
1203	dREQ;	1554	dREQ;
1204		1555
1205	New (0, req->statdata, 1, Stat_t);	1556	req->ptr2 = malloc (sizeof (Stat_t));
1206	if (!req->statdata)	1557	if (!req->ptr2)
1207	{	1558	{
1208	req_free (req);	1559	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");	1560	croak ("out of memory during aio_stat statdata allocation");
1210	}	1561	}
		1562
		1563	req->flags |= FLAG_PTR2_FREE;
1211		1564
1212	if (SvPOK (fh_or_path))	1565	if (SvPOK (fh_or_path))
1213	{	1566	{
1214	req->type = ix;	1567	req->type = ix;
1215	req->data = newSVsv (fh_or_path);	1568	req->sv1 = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1569	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1570	}
1218	else	1571	else
1219	{	1572	{
1220	req->type = REQ_FSTAT;	1573	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);	1574	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1576	}
1224		1577
1225	REQ_SEND;	1578	REQ_SEND;
1226	}	1579	}
1227		1580
1228	void	1581	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1582	aio_unlink (pathname,callback=&PL_sv_undef)
1230	SV * pathname	1583	SV8 * pathname
1231	SV * callback	1584	SV * callback
1232	ALIAS:	1585	ALIAS:
1233	aio_unlink = REQ_UNLINK	1586	aio_unlink = REQ_UNLINK
1234	aio_rmdir = REQ_RMDIR	1587	aio_rmdir = REQ_RMDIR
1235	aio_readdir = REQ_READDIR	1588	aio_readdir = REQ_READDIR
1236	PPCODE:	1589	PPCODE:
1237	{	1590	{
1238	dREQ;	1591	dREQ;
1239		1592
1240	req->type = ix;	1593	req->type = ix;
1241	req->data = newSVsv (pathname);	1594	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1243		1596
1244	REQ_SEND;	1597	REQ_SEND;
1245	}	1598	}
1246		1599
1247	void	1600	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1249	SV * oldpath	1602	SV8 * oldpath
1250	SV * newpath	1603	SV8 * newpath
1251	SV * callback	1604	SV * callback
1252	ALIAS:	1605	ALIAS:
1253	aio_link = REQ_LINK	1606	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK	1607	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME	1608	aio_rename = REQ_RENAME
1256	PPCODE:	1609	PPCODE:
1257	{	1610	{
1258	dREQ;	1611	dREQ;
1259		1612
1260	req->type = ix;	1613	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1614	req->fh = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1615	req->ptr2 = SvPVbyte_nolen (req->fh);
1263	req->data = newSVsv (newpath);	1616	req->sv1 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1617	req->ptr1 = SvPVbyte_nolen (req->sv1);
1265		1618
1266	REQ_SEND;	1619	REQ_SEND;
1267	}	1620	}
1268		1621
1269	void	1622	void
		1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1624	SV8 * pathname
		1625	SV * callback
		1626	UV mode
		1627	UV dev
		1628	PPCODE:
		1629	{
		1630	dREQ;
		1631
		1632	req->type = REQ_MKNOD;
		1633	req->sv1 = newSVsv (pathname);
		1634	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1635	req->mode = (mode_t)mode;
		1636	req->offs = dev;
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1642	aio_busy (delay,callback=&PL_sv_undef)
1271	double delay	1643	double delay
1272	SV * callback	1644	SV * callback
1273	PPCODE:	1645	PPCODE:
1274	{	1646	{
1275	dREQ;	1647	dREQ;
1276		1648
1277	req->type = REQ_BUSY;	1649	req->type = REQ_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1650	req->int1 = delay < 0. ? 0 : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1280		1652
1281	REQ_SEND;	1653	REQ_SEND;
1282	}	1654	}
1283		1655
1284	void	1656	void
…		…
1288	PPCODE:	1660	PPCODE:
1289	{	1661	{
1290	dREQ;	1662	dREQ;
1291		1663
1292	req->type = REQ_GROUP;	1664	req->type = REQ_GROUP;
		1665
1293	req_send (req);	1666	req_send (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1668	}
1297		1669
1298	void	1670	void
1299	aio_nop (callback=&PL_sv_undef)	1671	aio_nop (callback=&PL_sv_undef)
1300	SV * callback	1672	SV * callback
1301	PPCODE:	1673	PPCODE:
1302	{	1674	{
1303	dREQ;	1675	dREQ;
1304		1676
1305	req->type = REQ_NOP;	1677	req->type = REQ_NOP;
1306		1678
1307	REQ_SEND;	1679	REQ_SEND;
1308	}	1680	}
1309		1681
1310	void	1682	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1683	aioreq_pri (int pri = 0)
1312	CODE:	1684	PROTOTYPE: ;$
		1685	CODE:
		1686	RETVAL = next_pri - PRI_BIAS;
		1687	if (items > 0)
		1688	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1689	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1690	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1691	next_pri = pri + PRI_BIAS;
		1692	}
		1693	OUTPUT:
		1694	RETVAL
1316		1695
1317	void	1696	void
1318	aioreq_nice (int nice = 0)	1697	aioreq_nice (int nice = 0)
1319	CODE:	1698	CODE:
1320	nice = next_pri - nice;	1699	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1700	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1701	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1702	next_pri = nice + PRI_BIAS;
1324		1703
1325	void	1704	void
1326	flush ()	1705	flush ()
1327	PROTOTYPE:	1706	PROTOTYPE:
1328	CODE:	1707	CODE:
…		…
1330	{	1709	{
1331	poll_wait ();	1710	poll_wait ();
1332	poll_cb ();	1711	poll_cb ();
1333	}	1712	}
1334		1713
1335	void	1714	int
1336	poll()	1715	poll()
1337	PROTOTYPE:	1716	PROTOTYPE:
1338	CODE:	1717	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1718	poll_wait ();
1342	poll_cb ();	1719	RETVAL = poll_cb ();
1343	}	1720	OUTPUT:
		1721	RETVAL
1344		1722
1345	int	1723	int
1346	poll_fileno()	1724	poll_fileno()
1347	PROTOTYPE:	1725	PROTOTYPE:
1348	CODE:	1726	CODE:
…		…
1360		1738
1361	void	1739	void
1362	poll_wait()	1740	poll_wait()
1363	PROTOTYPE:	1741	PROTOTYPE:
1364	CODE:	1742	CODE:
1365	if (nreqs)
1366	poll_wait ();	1743	poll_wait ();
		1744
		1745	void
		1746	setsig (int signum = SIGIO)
		1747	PROTOTYPE: ;$
		1748	CODE:
		1749	{
		1750	if (block_sig_level)
		1751	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1752
		1753	LOCK (reslock);
		1754	main_tid = pthread_self ();
		1755	main_sig = signum;
		1756	UNLOCK (reslock);
		1757
		1758	if (main_sig && npending)
		1759	pthread_kill (main_tid, main_sig);
		1760	}
		1761
		1762	void
		1763	aio_block (SV *cb)
		1764	PROTOTYPE: &
		1765	PPCODE:
		1766	{
		1767	int count;
		1768
		1769	block_sig ();
		1770	PUSHMARK (SP);
		1771	PUTBACK;
		1772	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1773	SPAGAIN;
		1774	unblock_sig ();
		1775
		1776	if (SvTRUE (ERRSV))
		1777	croak (0);
		1778
		1779	XSRETURN (count);
		1780	}
1367		1781
1368	int	1782	int
1369	nreqs()	1783	nreqs()
1370	PROTOTYPE:	1784	PROTOTYPE:
1371	CODE:	1785	CODE:
1372	RETVAL = nreqs;	1786	RETVAL = nreqs;
1373	OUTPUT:	1787	OUTPUT:
1374	RETVAL	1788	RETVAL
1375		1789
		1790	int
		1791	nready()
		1792	PROTOTYPE:
		1793	CODE:
		1794	RETVAL = get_nready ();
		1795	OUTPUT:
		1796	RETVAL
		1797
		1798	int
		1799	npending()
		1800	PROTOTYPE:
		1801	CODE:
		1802	RETVAL = get_npending ();
		1803	OUTPUT:
		1804	RETVAL
		1805
		1806	int
		1807	nthreads()
		1808	PROTOTYPE:
		1809	CODE:
		1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1811	RETVAL = started;
		1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1813	OUTPUT:
		1814	RETVAL
		1815
1376	PROTOTYPES: DISABLE	1816	PROTOTYPES: DISABLE
1377		1817
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1819
1380	void	1820	void
…		…
1395	PPCODE:	1835	PPCODE:
1396	{	1836	{
1397	int i;	1837	int i;
1398	aio_req req;	1838	aio_req req;
1399		1839
		1840	if (main_sig && !block_sig_level)
		1841	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1842
1400	if (grp->fd == 2)	1843	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1845
1403	for (i = 1; i < items; ++i )	1846	for (i = 1; i < items; ++i )
1404	{	1847	{
1405	if (GIMME_V != G_VOID)	1848	if (GIMME_V != G_VOID)
…		…
1407		1850
1408	req = SvAIO_REQ (ST (i));	1851	req = SvAIO_REQ (ST (i));
1409		1852
1410	if (req)	1853	if (req)
1411	{	1854	{
1412	++grp->length;	1855	++grp->size;
1413	req->grp = grp;	1856	req->grp = grp;
1414		1857
1415	req->grp_prev = 0;	1858	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;	1859	req->grp_next = grp->grp_first;
1417		1860
…		…
1422	}	1865	}
1423	}	1866	}
1424	}	1867	}
1425		1868
1426	void	1869	void
		1870	cancel_subs (aio_req_ornot req)
		1871	CODE:
		1872	req_cancel_subs (req);
		1873
		1874	void
1427	result (aio_req grp, ...)	1875	result (aio_req grp, ...)
1428	CODE:	1876	CODE:
1429	{	1877	{
1430	int i;	1878	int i;
		1879	AV *av;
		1880
		1881	grp->errorno = errno;
		1882
1431	AV *av = newAV ();	1883	av = newAV ();
1432		1884
1433	for (i = 1; i < items; ++i )	1885	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1886	av_push (av, newSVsv (ST (i)));
1435		1887
1436	SvREFCNT_dec (grp->data);	1888	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1889	grp->sv1 = (SV *)av;
1438	}	1890	}
		1891
		1892	void
		1893	errno (aio_req grp, int errorno = errno)
		1894	CODE:
		1895	grp->errorno = errorno;
1439		1896
1440	void	1897	void
1441	limit (aio_req grp, int limit)	1898	limit (aio_req grp, int limit)
1442	CODE:	1899	CODE:
1443	grp->fd2 = limit;	1900	grp->int2 = limit;
1444	aio_grp_feed (grp);	1901	aio_grp_feed (grp);
1445		1902
1446	void	1903	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1904	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1905	CODE:
1449	{	1906	{
1450	SvREFCNT_dec (grp->fh2);	1907	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1908	grp->sv2 = newSVsv (callback);
1452		1909
1453	if (grp->fd2 <= 0)	1910	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1911	grp->int2 = 2;
1455		1912
1456	aio_grp_feed (grp);	1913	aio_grp_feed (grp);
1457	}	1914	}
1458		1915

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