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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC vs.
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC

1	#if __linux	1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
2	# define _GNU_SOURCE	5	# define _GNU_SOURCE
3	#endif	6	#endif
4		7
		8	/* just in case */
5	#define _REENTRANT 1	9	#define _REENTRANT 1
6		10
7	#include <errno.h>	11	#include <errno.h>
8		12
9	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
13	#include "autoconf/config.h"	17	#include "autoconf/config.h"
14		18
15	#include <pthread.h>	19	#include <pthread.h>
16		20
17	#include <stddef.h>	21	#include <stddef.h>
		22	#include <stdlib.h>
18	#include <errno.h>	23	#include <errno.h>
19	#include <sys/time.h>	24	#include <sys/time.h>
20	#include <sys/select.h>	25	#include <sys/select.h>
21	#include <sys/types.h>	26	#include <sys/types.h>
22	#include <sys/stat.h>	27	#include <sys/stat.h>
…		…
39	# else	44	# else
40	# error sendfile support requested but not available	45	# error sendfile support requested but not available
41	# endif	46	# endif
42	#endif	47	#endif
43		48
		49	/* number of seconds after which idle threads exit */
		50	#define IDLE_TIMEOUT 10
		51
44	/* used for struct dirent, AIX doesn't provide it */	52	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	53	#ifndef NAME_MAX
46	# 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
47	#endif	60	#endif
48		61
49	#if __ia64	62	#if __ia64
50	# define STACKSIZE 65536	63	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN	65	# define STACKSIZE PTHREAD_STACK_MIN
53	#else	66	#else
54	# define STACKSIZE 16384	67	# define STACKSIZE 16384
55	#endif	68	#endif
56		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
57	/* buffer size for various temporary buffers */	82	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	83	#define AIO_BUFSIZE 65536
59		84
60	#define dBUF \	85	#define dBUF \
		86	char *aio_buf; \
		87	LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		89	UNLOCK (wrklock); \
62	if (!aio_buf) \	90	if (!aio_buf) \
63	return -1;	91	return -1;
64		92
65	#define fBUF free (aio_buf)	93	typedef SV SV8; /* byte-sv, used for argument-checking */
66		94
67	enum {	95	enum {
68	REQ_QUIT,	96	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,	99	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	106	REQ_BUSY,
79	};	107	};
80		108
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		111
84	typedef struct aio_cb	112	typedef struct aio_cb
85	{	113	{
86	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
87		115
88	SV *data, *callback;	116	SV *callback, *fh;
89	SV *fh, *fh2;	117	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	119	off_t offs;
93	size_t length;	120	size_t size;
94	ssize_t result;	121	ssize_t result;
95		122
96	STRLEN dataoffset;	123	STRLEN stroffset;
97	int type;	124	int type;
98	int fd, fd2;	125	int int1, int2;
99	int errorno;	126	int errorno;
100	mode_t mode; /* open */	127	mode_t mode; /* open */
101		128
102	unsigned char flags;	129	unsigned char flags;
103	unsigned char pri;	130	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	134	} aio_cb;
108		135
109	enum {	136	enum {
110	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) */
111	};	140	};
112		141
113	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
115		144
…		…
120	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};	152	};
124		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
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126		201
127	static int started, wanted;	202	static unsigned int started, idle, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;
130	static int respipe [2];
131		203
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else	206	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif	208	#endif
137		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
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	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
141		304
142	/*	305	/*
143	* a somewhat faster data structure might be nice, but	306	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns	307	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.	308	* per shift, the most expensive operation.
…		…
191	}	354	}
192		355
193	abort ();	356	abort ();
194	}	357	}
195		358
		359	static int poll_cb ();
196	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
197	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
198		363
199	/* must be called at most once */	364	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
201	{	366	{
202	if (!req->self)	367	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	386	}
222		387
223	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
224	{	389	{
		390	block_sig ();
		391
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
226	{	393	{
227	int old_len = grp->length;	394	int old_len = grp->size;
228		395
229	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
230	{	397	{
231	dSP;	398	dSP;
232		399
233	ENTER;	400	ENTER;
234	SAVETMPS;	401	SAVETMPS;
235	PUSHMARK (SP);	402	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	404	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	406	SPAGAIN;
240	FREETMPS;	407	FREETMPS;
241	LEAVE;	408	LEAVE;
242	}	409	}
243		410
244	/* stop if no progress has been made */	411	/* stop if no progress has been made */
245	if (old_len == grp->length)	412	if (old_len == grp->size)
246	{	413	{
247	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
248	grp->fh2 = 0;	415	grp->sv2 = 0;
249	break;	416	break;
250	}	417	}
251	}	418	}
		419
		420	unblock_sig ();
252	}	421	}
253		422
254	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
255	{	424	{
256	--grp->length;	425	--grp->size;
257		426
258	/* call feeder, if applicable */	427	/* call feeder, if applicable */
259	aio_grp_feed (grp);	428	aio_grp_feed (grp);
260		429
261	/* finish, if done */	430	/* finish, if done */
262	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
263	{	432	{
		433	block_sig ();
		434
264	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
265	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
266	}	444	}
267	}	445	}
268		446
269	static void poll_wait ()
270	{
271	fd_set rfd;
272
273	while (nreqs)
274	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
295	{	448	{
296	dSP;	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
297		453
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{	455	{
300	errno = req->errorno;
301
302	ENTER;	456	ENTER;
303	SAVETMPS;	457	SAVETMPS;
304	PUSHMARK (SP);	458	PUSHMARK (SP);
305	EXTEND (SP, 1);	459	EXTEND (SP, 1);
306		460
…		…
310	{	464	{
311	SV *rv = &PL_sv_undef;	465	SV *rv = &PL_sv_undef;
312		466
313	if (req->result >= 0)	467	if (req->result >= 0)
314	{	468	{
		469	int i;
315	char *buf = req->data2ptr;	470	char *buf = req->ptr2;
316	AV *av = newAV ();	471	AV *av = newAV ();
317		472
318	while (req->result)	473	av_extend (av, req->result - 1);
		474
		475	for (i = 0; i < req->result; ++i)
319	{	476	{
320	SV *sv = newSVpv (buf, 0);	477	SV *sv = newSVpv (buf, 0);
321		478
322	av_push (av, sv);	479	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	480	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	481	}
326		482
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	483	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	484	}
329		485
…		…
339	PUSHs (sv_2mortal (newSViv (req->result)));	495	PUSHs (sv_2mortal (newSViv (req->result)));
340	PUTBACK;	496	PUTBACK;
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342	SPAGAIN;	498	SPAGAIN;
343		499
344	fh = SvREFCNT_inc (POPs);	500	fh = POPs;
345
346	PUSHMARK (SP);	501	PUSHMARK (SP);
347	XPUSHs (sv_2mortal (fh));	502	XPUSHs (fh);
348	}	503	}
349	break;	504	break;
350		505
351	case REQ_GROUP:	506	case REQ_GROUP:
352	req->fd = 2; /* mark group as finished */	507	req->int1 = 2; /* mark group as finished */
353		508
354	if (req->data)	509	if (req->sv1)
355	{	510	{
356	int i;	511	int i;
357	AV *av = (AV *)req->data;	512	AV *av = (AV *)req->sv1;
358		513
359	EXTEND (SP, AvFILL (av) + 1);	514	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	515	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	516	PUSHs (*av_fetch (av, i, 0));
362	}	517	}
363	break;	518	break;
364		519
365	case REQ_NOP:	520	case REQ_NOP:
366	case REQ_SLEEP:	521	case REQ_BUSY:
		522	break;
		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)));
367	break;	546	break;
368		547
369	default:	548	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	549	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	550	break;
372	}	551	}
373		552
		553	errno = req->errorno;
374		554
375	PUTBACK;	555	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
377	SPAGAIN;	557	SPAGAIN;
378		558
…		…
392	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
393		573
394	aio_grp_dec (grp);	574	aio_grp_dec (grp);
395	}	575	}
396		576
397	if (SvTRUE (ERRSV))	577	return !SvTRUE (ERRSV);
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	578	}
403		579
404	static void req_free (aio_req req)	580	static void req_free (aio_req req)
405	{	581	{
406	if (req->self)	582	if (req->self)
407	{	583	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
410	}	586	}
411		587
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		592
418	if (req->type == REQ_READDIR && req->result >= 0)	593	if (req->flags & FLAG_PTR2_FREE)
419	free (req->data2ptr);	594	free (req->ptr2);
420		595
421	Safefree (req);	596	Safefree (req);
422	}	597	}
423		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
424	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
425	{	614	{
426	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
427		616
428	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
429	{
430	aio_req sub;
431
432	for (sub = req->grp_first; sub; sub = sub->grp_next)
433	req_cancel (sub);
434	}
435	}
436
437	static int poll_cb ()
438	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)
445	{
446	pthread_mutex_lock (&reslock);
447	req = reqq_shift (&res_queue);
448
449	if (req)
450	{
451	if (!res_queue.size)
452	{
453	/* read any signals sent by the worker threads */
454	char buf [32];
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}
458	}
459
460	pthread_mutex_unlock (&reslock);
461
462	if (!req)
463	break;
464
465	--nreqs;
466
467	if (req->type == REQ_QUIT)
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}
496
497	return count;
498	}	618	}
499		619
500	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
501		621
502	static void start_thread (void)	622	static void start_thread (void)
503	{	623	{
504	sigset_t fullsigset, oldsigset;	624	sigset_t fullsigset, oldsigset;
505	pthread_t tid;
506	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");
507		631
508	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
510	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
511		638
512	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
		640
		641	LOCK (wrklock);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
514		643
515	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;
516	started++;	650	++started;
		651	}
		652	else
		653	free (wrk);
517		654
518	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 ();
519	}	669	}
520		670
521	static void req_send (aio_req req)	671	static void req_send (aio_req req)
522	{	672	{
523	while (started < wanted && nreqs >= started)	673	block_sig ();
524	start_thread ();
525		674
526	++nreqs;	675	++nreqs;
527		676
528	pthread_mutex_lock (&reqlock);	677	LOCK (reqlock);
		678	++nready;
529	reqq_push (&req_queue, req);	679	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);	681	UNLOCK (reqlock);
532		682
533	if (nreqs > max_outstanding)	683	unblock_sig ();
534	for (;;)
535	{
536	poll_cb ();
537		684
538	if (nreqs <= max_outstanding)	685	maybe_start_thread ();
539	break;
540
541	poll_wait ();
542	}
543	}	686	}
544		687
545	static void end_thread (void)	688	static void end_thread (void)
546	{	689	{
547	aio_req req;	690	aio_req req;
…		…
549	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
550		693
551	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;	695	req->pri = PRI_MAX + PRI_BIAS;
553		696
554	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);
555	}	712	}
556		713
557	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
558	{	715	{
559	if (wanted < nthreads)	716	if (wanted < nthreads)
560	wanted = nthreads;	717	wanted = nthreads;
561	}	718	}
562		719
563	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
564	{	721	{
565	int cur = started;
566
567	if (wanted > nthreads)	722	if (wanted > nthreads)
568	wanted = nthreads;	723	wanted = nthreads;
569		724
570	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)
571	{	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
572	end_thread ();	743	maybe_start_thread ();
573	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
574	}	749	}
		750	}
575		751
576	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 (;;)
577	{	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
578	poll_wait ();	829	poll_wait ();
579	poll_cb ();	830
		831	++maxreqs;
580	}	832	}
		833
		834	unblock_sig ();
		835	return count;
581	}	836	}
582		837
583	static void create_pipe ()	838	static void create_pipe ()
584	{	839	{
585	if (pipe (respipe))	840	if (pipe (respipe))
…		…
609	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)
610	{	865	{
611	ssize_t res;	866	ssize_t res;
612	off_t ooffset;	867	off_t ooffset;
613		868
614	pthread_mutex_lock (&preadwritelock);	869	LOCK (preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);	870	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);	871	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);	872	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);	873	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);	874	UNLOCK (preadwritelock);
620		875
621	return res;	876	return res;
622	}	877	}
623		878
624	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)
625	{	880	{
626	ssize_t res;	881	ssize_t res;
627	off_t ooffset;	882	off_t ooffset;
628		883
629	pthread_mutex_lock (&preadwritelock);	884	LOCK (preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);	885	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);	886	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);	887	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);	888	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);	889	UNLOCK (preadwritelock);
635		890
636	return res;	891	return res;
637	}	892	}
638	#endif	893	#endif
639		894
640	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
641	# define fdatasync fsync	896	# define fdatasync fsync
642	#endif	897	#endif
643		898
644	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
645	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
646		901
647	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)
648	{	903	{
649	dBUF;	904	dBUF;
650		905
651	while (count > 0)	906	while (count > 0)
652	{	907	{
…		…
655	pread (fd, aio_buf, len, offset);	910	pread (fd, aio_buf, len, offset);
656	offset += len;	911	offset += len;
657	count -= len;	912	count -= len;
658	}	913	}
659		914
660	fBUF;
661
662	errno = 0;	915	errno = 0;
663	}	916	}
		917
664	#endif	918	#endif
665		919
666	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
668		922
…		…
671	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)
672	{	926	{
673	struct dirent *e;	927	struct dirent *e;
674	int errorno;	928	int errorno;
675		929
676	pthread_mutex_lock (&readdirlock);	930	LOCK (readdirlock);
677		931
678	e = readdir (dirp);	932	e = readdir (dirp);
679	errorno = errno;	933	errorno = errno;
680		934
681	if (e)	935	if (e)
…		…
684	strcpy (ent->d_name, e->d_name);	938	strcpy (ent->d_name, e->d_name);
685	}	939	}
686	else	940	else
687	*res = 0;	941	*res = 0;
688		942
689	pthread_mutex_unlock (&readdirlock);	943	UNLOCK (readdirlock);
690		944
691	errno = errorno;	945	errno = errorno;
692	return e ? 0 : -1;	946	return e ? 0 : -1;
693	}	947	}
694	#endif	948	#endif
695		949
696	/* sendfile always needs emulation */	950	/* sendfile always needs emulation */
697	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)
698	{	952	{
699	ssize_t res;	953	ssize_t res;
700		954
701	if (!count)	955	if (!count)
702	return 0;	956	return 0;
…		…
713	{	967	{
714	off_t sbytes;	968	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		970
717	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
719	res = sbytes;	973	res = sbytes;
720	}	974	}
721		975
722	# elif __hpux	976	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
779		1033
780	offset += cnt;	1034	offset += cnt;
781	res += cnt;	1035	res += cnt;
782	count -= cnt;	1036	count -= cnt;
783	}	1037	}
784
785	fBUF;
786	}	1038	}
787		1039
788	return res;	1040	return res;
789	}	1041	}
790		1042
791	/* read a full directory */	1043	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)	1044	static void scandir_ (aio_req req, worker *self)
793	{	1045	{
794	DIR *dirp;	1046	DIR *dirp;
795	union	1047	union
796	{	1048	{
797	struct dirent d;	1049	struct dirent d;
…		…
802	int memlen = 4096;	1054	int memlen = 4096;
803	int memofs = 0;	1055	int memofs = 0;
804	int res = 0;	1056	int res = 0;
805	int errorno;	1057	int errorno;
806		1058
807	dirp = opendir (path);	1059	LOCK (wrklock);
808	if (!dirp)	1060	self->dirp = dirp = opendir (req->ptr1);
809	return -1;
810
811	u = malloc (sizeof (*u));	1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
812	names = malloc (memlen);	1063	req->ptr2 = names = malloc (memlen);
		1064	UNLOCK (wrklock);
813		1065
814	if (u && names)	1066	if (dirp && u && names)
815	for (;;)	1067	for (;;)
816	{	1068	{
817	errno = 0;	1069	errno = 0;
818	readdir_r (dirp, &u->d, &entp);	1070	readdir_r (dirp, &u->d, &entp);
819		1071
…		…
829	res++;	1081	res++;
830		1082
831	while (memofs + len > memlen)	1083	while (memofs + len > memlen)
832	{	1084	{
833	memlen *= 2;	1085	memlen *= 2;
		1086	LOCK (wrklock);
834	names = realloc (names, memlen);	1087	req->ptr2 = names = realloc (names, memlen);
		1088	UNLOCK (wrklock);
		1089
835	if (!names)	1090	if (!names)
836	break;	1091	break;
837	}	1092	}
838		1093
839	memcpy (names + memofs, name, len);	1094	memcpy (names + memofs, name, len);
840	memofs += len;	1095	memofs += len;
841	}	1096	}
842	}	1097	}
843		1098
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	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 (;;)
849	{	1118	{
850	free (names);	1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
851	errno = errorno;
852	res = -1;
853	}
854		1120
855	*namesp = (void *)names;	1121	LOCK (reqlock);
856	return res;
857	}
858
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869		1122
870	for (;;)	1123	for (;;)
871	{	1124	{
872	req = reqq_shift (&req_queue);	1125	self->req = req = reqq_shift (&req_queue);
873		1126
874	if (req)	1127	if (req)
875	break;	1128	break;
876		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 */
877	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
878	}	1151	}
879		1152
880	pthread_mutex_unlock (&reqlock);	1153	--nready;
		1154
		1155	UNLOCK (reqlock);
881		1156
882	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884		1158
885	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)	1160	switch (req->type)
887	{	1161	{
888	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;
889	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;
890		1164
891	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;
892	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;
893		1167
894	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;
895	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;
896	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;
897		1171
898	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;
899	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
905		1182
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
909		1186
910	case REQ_SLEEP:	1187	case REQ_BUSY:
911	{	1188	{
912	struct timeval tv;	1189	struct timeval tv;
913		1190
914	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
915	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
916		1193
917	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
918	}	1195	}
919		1196
920	case REQ_GROUP:	1197	case REQ_GROUP:
921	case REQ_NOP:	1198	case REQ_NOP:
		1199	break;
		1200
922	case REQ_QUIT:	1201	case REQ_QUIT:
923	break;	1202	goto quit;
924		1203
925	default:	1204	default:
926	req->result = ENOSYS;	1205	req->result = ENOSYS;
927	break;	1206	break;
928	}	1207	}
929		1208
930	req->errorno = errno;	1209	req->errorno = errno;
931		1210
932	pthread_mutex_lock (&reslock);	1211	LOCK (reslock);
		1212
		1213	++npending;
933		1214
934	if (!reqq_push (&res_queue, req))	1215	if (!reqq_push (&res_queue, req))
		1216	{
935	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);	1218	write (respipe [1], &respipe, 1);
937		1219
938	pthread_mutex_unlock (&reslock);	1220	/* optionally signal the main thread asynchronously */
		1221	if (main_sig)
		1222	pthread_kill (main_tid, main_sig);
		1223	}
		1224
		1225	self->req = 0;
		1226	worker_clear (self);
		1227
		1228	UNLOCK (reslock);
939	}	1229	}
940	while (type != REQ_QUIT);	1230
		1231	quit:
		1232	LOCK (wrklock);
		1233	worker_free (self);
		1234	UNLOCK (wrklock);
941		1235
942	return 0;	1236	return 0;
943	}	1237	}
944		1238
945	/*****************************************************************************/	1239	/*****************************************************************************/
946		1240
947	static void atfork_prepare (void)	1241	static void atfork_prepare (void)
948	{	1242	{
949	pthread_mutex_lock (&reqlock);	1243	LOCK (wrklock);
950	pthread_mutex_lock (&reslock);	1244	LOCK (reqlock);
		1245	LOCK (reslock);
951	#if !HAVE_PREADWRITE	1246	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);	1247	LOCK (preadwritelock);
953	#endif	1248	#endif
954	#if !HAVE_READDIR_R	1249	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);	1250	LOCK (readdirlock);
956	#endif	1251	#endif
957	}	1252	}
958		1253
959	static void atfork_parent (void)	1254	static void atfork_parent (void)
960	{	1255	{
961	#if !HAVE_READDIR_R	1256	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);	1257	UNLOCK (readdirlock);
963	#endif	1258	#endif
964	#if !HAVE_PREADWRITE	1259	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);	1260	UNLOCK (preadwritelock);
966	#endif	1261	#endif
967	pthread_mutex_unlock (&reslock);	1262	UNLOCK (reslock);
968	pthread_mutex_unlock (&reqlock);	1263	UNLOCK (reqlock);
		1264	UNLOCK (wrklock);
969	}	1265	}
970		1266
971	static void atfork_child (void)	1267	static void atfork_child (void)
972	{	1268	{
973	aio_req prv;	1269	aio_req prv;
974
975	started = 0;
976		1270
977	while (prv = reqq_shift (&req_queue))	1271	while (prv = reqq_shift (&req_queue))
978	req_free (prv);	1272	req_free (prv);
979		1273
980	while (prv = reqq_shift (&res_queue))	1274	while (prv = reqq_shift (&res_queue))
981	req_free (prv);	1275	req_free (prv);
982		1276
		1277	while (wrk_first.next != &wrk_first)
		1278	{
		1279	worker *wrk = wrk_first.next;
		1280
		1281	if (wrk->req)
		1282	req_free (wrk->req);
		1283
		1284	worker_clear (wrk);
		1285	worker_free (wrk);
		1286	}
		1287
		1288	started = 0;
		1289	idle = 0;
		1290	nreqs = 0;
		1291	nready = 0;
		1292	npending = 0;
		1293
983	close (respipe [0]);	1294	close (respipe [0]);
984	close (respipe [1]);	1295	close (respipe [1]);
985	create_pipe ();	1296	create_pipe ();
986		1297
987	atfork_parent ();	1298	atfork_parent ();
…		…
1013	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
1014		1325
1015	BOOT:	1326	BOOT:
1016	{	1327	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1021		1337
1022	create_pipe ();	1338	create_pipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}	1340	}
1025		1341
1026	void	1342	void
1027	min_parallel (nthreads)	1343	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
1030		1347
1031	void	1348	void
1032	max_parallel (nthreads)	1349	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	1350	PROTOTYPE: $
		1351	CODE:
		1352	max_poll_time = nseconds * AIO_TICKS;
		1353
		1354	void
		1355	min_parallel (int nthreads)
		1356	PROTOTYPE: $
		1357
		1358	void
		1359	max_parallel (int nthreads)
		1360	PROTOTYPE: $
		1361
		1362	void
		1363	max_idle (int nthreads)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	set_max_idle (nthreads);
1035		1367
1036	int	1368	int
1037	max_outstanding (nreqs)	1369	max_outstanding (int maxreqs)
1038	int nreqs	1370	PROTOTYPE: $
1039	PROTOTYPE: $
1040	CODE:	1371	CODE:
1041	RETVAL = max_outstanding;	1372	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;	1373	max_outstanding = maxreqs;
		1374	OUTPUT:
		1375	RETVAL
1043		1376
1044	void	1377	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1046	SV * pathname	1379	SV8 * pathname
1047	int flags	1380	int flags
1048	int mode	1381	int mode
1049	SV * callback	1382	SV * callback
1050	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
1051	PPCODE:	1384	PPCODE:
1052	{	1385	{
1053	dREQ;	1386	dREQ;
1054		1387
1055	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
1056	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	1391	req->int1 = flags;
1059	req->mode = mode;	1392	req->mode = mode;
1060		1393
1061	REQ_SEND;	1394	REQ_SEND;
1062	}	1395	}
1063		1396
…		…
1073	PPCODE:	1406	PPCODE:
1074	{	1407	{
1075	dREQ;	1408	dREQ;
1076		1409
1077	req->type = ix;	1410	req->type = ix;
1078	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		1413
1081	REQ_SEND (req);	1414	REQ_SEND (req);
1082	}	1415	}
1083		1416
1084	void	1417	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086	SV * fh	1419	SV * fh
1087	UV offset	1420	UV offset
1088	UV length	1421	UV length
1089	SV * data	1422	SV8 * data
1090	UV dataoffset	1423	UV dataoffset
1091	SV * callback	1424	SV * callback
1092	ALIAS:	1425	ALIAS:
1093	aio_read = REQ_READ	1426	aio_read = REQ_READ
1094	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1095	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1096	PPCODE:	1429	PPCODE:
1097	{	1430	{
1098	aio_req req;
1099	STRLEN svlen;	1431	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1101		1433
1102	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1115	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1116	}	1448	}
1117	else	1449	else
1118	{	1450	{
1119	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1121	}	1453	}
1122		1454
1123	if (length < 0)	1455	if (length < 0)
1124	croak ("length must not be negative");	1456	croak ("length must not be negative");
1125		1457
1126	{	1458	{
1127	dREQ;	1459	dREQ;
1128		1460
1129	req->type = ix;	1461	req->type = ix;
1130	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1133	req->offset = offset;	1465	req->offs = offset;
1134	req->length = length;	1466	req->size = length;
1135	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1137		1470
1138	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1139	{	1472	{
1140	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1142	}	1475	}
1143		1476
1144	REQ_SEND;	1477	REQ_SEND;
1145	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		1486	PPCODE:
		1487	{
		1488	SV *data;
		1489	dREQ;
		1490
		1491	data = newSV (NAME_MAX);
		1492	SvPOK_on (data);
		1493
		1494	req->type = REQ_READLINK;
		1495	req->fh = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->fh);
		1497	req->sv1 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
1146	}	1501	}
1147		1502
1148	void	1503	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1150	SV * out_fh	1505	SV * out_fh
…		…
1156	PPCODE:	1511	PPCODE:
1157	{	1512	{
1158	dREQ;	1513	dREQ;
1159		1514
1160	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	1520	req->offs = in_offset;
1166	req->length = length;	1521	req->size = length;
1167		1522
1168	REQ_SEND;	1523	REQ_SEND;
1169	}	1524	}
1170		1525
1171	void	1526	void
…		…
1178	PPCODE:	1533	PPCODE:
1179	{	1534	{
1180	dREQ;	1535	dREQ;
1181		1536
1182	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1183	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	1540	req->offs = offset;
1186	req->length = length;	1541	req->size = length;
1187		1542
1188	REQ_SEND;	1543	REQ_SEND;
1189	}	1544	}
1190		1545
1191	void	1546	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1193	SV * fh_or_path	1548	SV8 * fh_or_path
1194	SV * callback	1549	SV * callback
1195	ALIAS:	1550	ALIAS:
1196	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1197	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1198	PPCODE:	1553	PPCODE:
1199	{	1554	{
1200	dREQ;	1555	dREQ;
1201		1556
1202	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1203	if (!req->statdata)	1558	if (!req->ptr2)
1204	{	1559	{
1205	req_free (req);	1560	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1207	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1208		1565
1209	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1210	{	1567	{
1211	req->type = ix;	1568	req->type = ix;
1212	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1571	}
1215	else	1572	else
1216	{	1573	{
1217	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1577	}
1221		1578
1222	REQ_SEND;	1579	REQ_SEND;
1223	}	1580	}
1224		1581
1225	void	1582	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1227	SV * pathname	1584	SV8 * pathname
1228	SV * callback	1585	SV * callback
1229	ALIAS:	1586	ALIAS:
1230	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1231	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1232	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1233	PPCODE:	1590	PPCODE:
1234	{	1591	{
1235	dREQ;	1592	dREQ;
1236		1593
1237	req->type = ix;	1594	req->type = ix;
1238	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1596	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
		1603	SV8 * pathname
		1604	UV mode
		1605	SV * callback
		1606	PPCODE:
		1607	{
		1608	dREQ;
1240		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1241	REQ_SEND;	1615	REQ_SEND;
1242	}	1616	}
1243		1617
1244	void	1618	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1246	SV * oldpath	1620	SV8 * oldpath
1247	SV * newpath	1621	SV8 * newpath
1248	SV * callback	1622	SV * callback
1249	ALIAS:	1623	ALIAS:
1250	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1253	PPCODE:	1627	PPCODE:
1254	{	1628	{
1255	dREQ;	1629	dREQ;
1256		1630
1257	req->type = ix;	1631	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1260	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1262		1636
1263	REQ_SEND;	1637	REQ_SEND;
1264	}	1638	}
1265		1639
1266	void	1640	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1268	double delay	1642	SV8 * pathname
		1643	UV mode
		1644	UV dev
1269	SV * callback	1645	SV * callback
1270	PPCODE:	1646	PPCODE:
1271	{	1647	{
1272	dREQ;	1648	dREQ;
		1649
		1650	req->type = REQ_MKNOD;
		1651	req->sv1 = newSVsv (pathname);
		1652	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1653	req->mode = (mode_t)mode;
		1654	req->offs = dev;
		1655
		1656	REQ_SEND;
		1657	}
1273		1658
		1659	void
		1660	aio_busy (delay,callback=&PL_sv_undef)
		1661	double delay
		1662	SV * callback
		1663	PPCODE:
		1664	{
		1665	dREQ;
		1666
1274	req->type = REQ_SLEEP;	1667	req->type = REQ_BUSY;
1275	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1277		1670
1278	REQ_SEND;	1671	REQ_SEND;
1279	}	1672	}
1280		1673
1281	void	1674	void
…		…
1285	PPCODE:	1678	PPCODE:
1286	{	1679	{
1287	dREQ;	1680	dREQ;
1288		1681
1289	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1290	req_send (req);	1684	req_send (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1686	}
1294		1687
1295	void	1688	void
1296	aio_nop (callback=&PL_sv_undef)	1689	aio_nop (callback=&PL_sv_undef)
1297	SV * callback	1690	SV * callback
1298	PPCODE:	1691	PPCODE:
1299	{	1692	{
1300	dREQ;	1693	dREQ;
1301		1694
1302	req->type = REQ_NOP;	1695	req->type = REQ_NOP;
1303		1696
1304	REQ_SEND;	1697	REQ_SEND;
1305	}	1698	}
1306		1699
1307	void	1700	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1701	aioreq_pri (int pri = 0)
1309	CODE:	1702	PROTOTYPE: ;$
		1703	CODE:
		1704	RETVAL = next_pri - PRI_BIAS;
		1705	if (items > 0)
		1706	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1707	if (pri < PRI_MIN) pri = PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1708	if (pri > PRI_MAX) pri = PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1709	next_pri = pri + PRI_BIAS;
		1710	}
		1711	OUTPUT:
		1712	RETVAL
1313		1713
1314	void	1714	void
1315	aioreq_nice (int nice = 0)	1715	aioreq_nice (int nice = 0)
1316	CODE:	1716	CODE:
1317	nice = next_pri - nice;	1717	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1718	if (nice < PRI_MIN) nice = PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1719	if (nice > PRI_MAX) nice = PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1720	next_pri = nice + PRI_BIAS;
1321		1721
1322	void	1722	void
1323	flush ()	1723	flush ()
1324	PROTOTYPE:	1724	PROTOTYPE:
1325	CODE:	1725	CODE:
…		…
1327	{	1727	{
1328	poll_wait ();	1728	poll_wait ();
1329	poll_cb ();	1729	poll_cb ();
1330	}	1730	}
1331		1731
1332	void	1732	int
1333	poll()	1733	poll()
1334	PROTOTYPE:	1734	PROTOTYPE:
1335	CODE:	1735	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1736	poll_wait ();
1339	poll_cb ();	1737	RETVAL = poll_cb ();
1340	}	1738	OUTPUT:
		1739	RETVAL
1341		1740
1342	int	1741	int
1343	poll_fileno()	1742	poll_fileno()
1344	PROTOTYPE:	1743	PROTOTYPE:
1345	CODE:	1744	CODE:
…		…
1357		1756
1358	void	1757	void
1359	poll_wait()	1758	poll_wait()
1360	PROTOTYPE:	1759	PROTOTYPE:
1361	CODE:	1760	CODE:
1362	if (nreqs)
1363	poll_wait ();	1761	poll_wait ();
		1762
		1763	void
		1764	setsig (int signum = SIGIO)
		1765	PROTOTYPE: ;$
		1766	CODE:
		1767	{
		1768	if (block_sig_level)
		1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1770
		1771	LOCK (reslock);
		1772	main_tid = pthread_self ();
		1773	main_sig = signum;
		1774	UNLOCK (reslock);
		1775
		1776	if (main_sig && npending)
		1777	pthread_kill (main_tid, main_sig);
		1778	}
		1779
		1780	void
		1781	aio_block (SV *cb)
		1782	PROTOTYPE: &
		1783	PPCODE:
		1784	{
		1785	int count;
		1786
		1787	block_sig ();
		1788	PUSHMARK (SP);
		1789	PUTBACK;
		1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1791	SPAGAIN;
		1792	unblock_sig ();
		1793
		1794	if (SvTRUE (ERRSV))
		1795	croak (0);
		1796
		1797	XSRETURN (count);
		1798	}
1364		1799
1365	int	1800	int
1366	nreqs()	1801	nreqs()
1367	PROTOTYPE:	1802	PROTOTYPE:
1368	CODE:	1803	CODE:
1369	RETVAL = nreqs;	1804	RETVAL = nreqs;
1370	OUTPUT:	1805	OUTPUT:
1371	RETVAL	1806	RETVAL
1372		1807
		1808	int
		1809	nready()
		1810	PROTOTYPE:
		1811	CODE:
		1812	RETVAL = get_nready ();
		1813	OUTPUT:
		1814	RETVAL
		1815
		1816	int
		1817	npending()
		1818	PROTOTYPE:
		1819	CODE:
		1820	RETVAL = get_npending ();
		1821	OUTPUT:
		1822	RETVAL
		1823
		1824	int
		1825	nthreads()
		1826	PROTOTYPE:
		1827	CODE:
		1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1829	RETVAL = started;
		1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1831	OUTPUT:
		1832	RETVAL
		1833
1373	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
1374		1835
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1837
1377	void	1838	void
…		…
1392	PPCODE:	1853	PPCODE:
1393	{	1854	{
1394	int i;	1855	int i;
1395	aio_req req;	1856	aio_req req;
1396		1857
		1858	if (main_sig && !block_sig_level)
		1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1860
1397	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1863
1400	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1401	{	1865	{
1402	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1404		1868
1405	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1406		1870
1407	if (req)	1871	if (req)
1408	{	1872	{
1409	++grp->length;	1873	++grp->size;
1410	req->grp = grp;	1874	req->grp = grp;
1411		1875
1412	req->grp_prev = 0;	1876	req->grp_prev = 0;
1413	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1414		1878
…		…
1419	}	1883	}
1420	}	1884	}
1421	}	1885	}
1422		1886
1423	void	1887	void
		1888	cancel_subs (aio_req_ornot req)
		1889	CODE:
		1890	req_cancel_subs (req);
		1891
		1892	void
1424	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
1425	CODE:	1894	CODE:
1426	{	1895	{
1427	int i;	1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
1428	AV *av = newAV ();	1901	av = newAV ();
1429		1902
1430	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1432		1905
1433	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1435	}	1908	}
		1909
		1910	void
		1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
1436		1914
1437	void	1915	void
1438	limit (aio_req grp, int limit)	1916	limit (aio_req grp, int limit)
1439	CODE:	1917	CODE:
1440	grp->fd2 = limit;	1918	grp->int2 = limit;
1441	aio_grp_feed (grp);	1919	aio_grp_feed (grp);
1442		1920
1443	void	1921	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1923	CODE:
1446	{	1924	{
1447	SvREFCNT_dec (grp->fh2);	1925	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1926	grp->sv2 = newSVsv (callback);
1449		1927
1450	if (grp->fd2 <= 0)	1928	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1929	grp->int2 = 2;
1452		1930
1453	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1454	}	1932	}
1455		1933

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