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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "autoconf/config.h"
17		10
18	#include <pthread.h>
19
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>	14	#include <sys/time.h>
23	#include <sys/select.h>	15	#include <sys/select.h>
24	#include <sys/types.h>	16	#include <sys/types.h>
25	#include <sys/stat.h>	17	#include <sys/stat.h>
26	#include <limits.h>	18	#include <limits.h>
27	#include <unistd.h>	19	#include <unistd.h>
28	#include <fcntl.h>	20	#include <fcntl.h>
29	#include <signal.h>	21	#include <signal.h>
30	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
31		24
32	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
33	# if __linux	26	# if __linux
34	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
35	# elif __freebsd	28	# elif __freebsd
…		…
42	# else	35	# else
43	# error sendfile support requested but not available	36	# error sendfile support requested but not available
44	# endif	37	# endif
45	#endif	38	#endif
46		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
47	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	44	#ifndef NAME_MAX
49	# define NAME_MAX 4096	45	# define NAME_MAX 4096
50	#endif	46	#endif
51		47
52	#if __ia64
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif
59
60	/* buffer size for various temporary buffers */	48	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	49	#define AIO_BUFSIZE 65536
		50
		51	/* use NV for 32 bit perls as it allows larger offsets */
		52	#if IVSIZE >= 8
		53	# define SvVAL64 SvIV
		54	#else
		55	# define SvVAL64 SvNV
		56	#endif
62		57
63	#define dBUF \	58	#define dBUF \
64	char *aio_buf; \	59	char *aio_buf; \
65	LOCK (wrklock); \	60	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \	62	UNLOCK (wrklock); \
68	if (!aio_buf) \	63	if (!aio_buf) \
69	return -1;	64	return -1;
70		65
		66	typedef SV SV8; /* byte-sv, used for argument-checking */
		67
71	enum {	68	enum {
72	REQ_QUIT,	69	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
75	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		74	REQ_UTIME, REQ_FUTIME,
		75	REQ_CHMOD, REQ_FCHMOD,
		76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,	81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,	82	REQ_BUSY,
83	};	83	};
84		84
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
87		87
88	typedef struct aio_cb	88	typedef struct aio_cb
89	{	89	{
90	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
91		91
92	SV *data, *callback;	92	SV *callback;
93	SV *fh, *fh2;	93	SV *sv1, *sv2;
94	void *dataptr, *data2ptr;	94	void *ptr1, *ptr2;
95	Stat_t *statdata;
96	off_t offset;	95	off_t offs;
97	size_t length;	96	size_t size;
98	ssize_t result;	97	ssize_t result;
		98	double nv1, nv2;
99		99
100	STRLEN dataoffset;	100	STRLEN stroffset;
101	int type;	101	int type;
102	int fd, fd2;	102	int int1, int2, int3;
103	int errorno;	103	int errorno;
104	mode_t mode; /* open */	104	mode_t mode; /* open */
105		105
106	unsigned char flags;	106	unsigned char flags;
107	unsigned char pri;	107	unsigned char pri;
…		…
109	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;	111	} aio_cb;
112		112
113	enum {	113	enum {
114	FLAG_CANCELLED = 0x01,	114	FLAG_CANCELLED = 0x01, /* request was cancelled */
		115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
115	};	117	};
116		118
117	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
119		121
…		…
124	DEFAULT_PRI = 0,	126	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,	127	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};	129	};
128		130
		131	#define AIO_TICKS ((1000000 + 1023) >> 10)
		132
		133	static unsigned int max_poll_time = 0;
		134	static unsigned int max_poll_reqs = 0;
		135
		136	/* calculcate time difference in ~1/AIO_TICKS of a second */
		137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		138	{
		139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		141	}
		142
		143	static thread_t main_tid;
		144	static int main_sig;
		145	static int block_sig_level;
		146
		147	void block_sig ()
		148	{
		149	sigset_t ss;
		150
		151	if (block_sig_level++)
		152	return;
		153
		154	if (!main_sig)
		155	return;
		156
		157	sigemptyset (&ss);
		158	sigaddset (&ss, main_sig);
		159	pthread_sigmask (SIG_BLOCK, &ss, 0);
		160	}
		161
		162	void unblock_sig ()
		163	{
		164	sigset_t ss;
		165
		166	if (--block_sig_level)
		167	return;
		168
		169	if (!main_sig)
		170	return;
		171
		172	sigemptyset (&ss);
		173	sigaddset (&ss, main_sig);
		174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		175	}
		176
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;	177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130		178
131	static int started, wanted;	179	static unsigned int started, idle, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134		180
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */	181	/* worker threads management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	182	static mutex_t wrklock = MUTEX_INIT;
146		183
147	typedef struct worker {	184	typedef struct worker {
148	/* locked by wrklock */	185	/* locked by wrklock */
149	struct worker *prev, *next;	186	struct worker *prev, *next;
150		187
151	pthread_t tid;	188	thread_t tid;
152		189
153	/* locked by reslock, reqlock or wrklock */	190	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */	191	aio_req req; /* currently processed request */
155	void *dbuf;	192	void *dbuf;
156	DIR *dirp;	193	DIR *dirp;
…		…
179	wrk->prev->next = wrk->next;	216	wrk->prev->next = wrk->next;
180		217
181	free (wrk);	218	free (wrk);
182	}	219	}
183		220
		221	static volatile unsigned int nreqs, nready, npending;
		222	static volatile unsigned int max_idle = 4;
		223	static volatile unsigned int max_outstanding = 0xffffffff;
		224	static int respipe [2];
		225
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	226	static mutex_t reslock = MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	227	static mutex_t reqlock = MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	228	static cond_t reqwait = COND_INIT;
		229
		230	#if WORDACCESS_UNSAFE
		231
		232	static unsigned int get_nready ()
		233	{
		234	unsigned int retval;
		235
		236	LOCK (reqlock);
		237	retval = nready;
		238	UNLOCK (reqlock);
		239
		240	return retval;
		241	}
		242
		243	static unsigned int get_npending ()
		244	{
		245	unsigned int retval;
		246
		247	LOCK (reslock);
		248	retval = npending;
		249	UNLOCK (reslock);
		250
		251	return retval;
		252	}
		253
		254	static unsigned int get_nthreads ()
		255	{
		256	unsigned int retval;
		257
		258	LOCK (wrklock);
		259	retval = started;
		260	UNLOCK (wrklock);
		261
		262	return retval;
		263	}
		264
		265	#else
		266
		267	# define get_nready() nready
		268	# define get_npending() npending
		269	# define get_nthreads() started
		270
		271	#endif
187		272
188	/*	273	/*
189	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns	275	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.	276	* per shift, the most expensive operation.
…		…
238		323
239	abort ();	324	abort ();
240	}	325	}
241		326
242	static int poll_cb ();	327	static int poll_cb ();
243	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
244	static void req_free (aio_req req);	329	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	330	static void req_cancel (aio_req req);
246		331
247	/* must be called at most once */	332	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
249	{	334	{
…		…
268	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	354	}
270		355
271	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
272	{	357	{
		358	block_sig ();
		359
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
274	{	361	{
275	int old_len = grp->length;	362	int old_len = grp->size;
276		363
277	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
278	{	365	{
279	dSP;	366	dSP;
280		367
281	ENTER;	368	ENTER;
282	SAVETMPS;	369	SAVETMPS;
283	PUSHMARK (SP);	370	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
285	PUTBACK;	372	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	374	SPAGAIN;
288	FREETMPS;	375	FREETMPS;
289	LEAVE;	376	LEAVE;
290	}	377	}
291		378
292	/* stop if no progress has been made */	379	/* stop if no progress has been made */
293	if (old_len == grp->length)	380	if (old_len == grp->size)
294	{	381	{
295	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
296	grp->fh2 = 0;	383	grp->sv2 = 0;
297	break;	384	break;
298	}	385	}
299	}	386	}
		387
		388	unblock_sig ();
300	}	389	}
301		390
302	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
303	{	392	{
304	--grp->length;	393	--grp->size;
305		394
306	/* call feeder, if applicable */	395	/* call feeder, if applicable */
307	aio_grp_feed (grp);	396	aio_grp_feed (grp);
308		397
309	/* finish, if done */	398	/* finish, if done */
310	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
311	{	400	{
		401	block_sig ();
		402
312	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
313	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
314	}	412	}
315	}	413	}
316		414
317	static void poll_wait ()
318	{
319	fd_set rfd;
320
321	while (nreqs)
322	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
343	{	416	{
344	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
345		421
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{	423	{
348	errno = req->errorno;
349
350	ENTER;	424	ENTER;
351	SAVETMPS;	425	SAVETMPS;
352	PUSHMARK (SP);	426	PUSHMARK (SP);
353	EXTEND (SP, 1);	427	EXTEND (SP, 1);
354		428
…		…
359	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
360		434
361	if (req->result >= 0)	435	if (req->result >= 0)
362	{	436	{
363	int i;	437	int i;
364	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
365	AV *av = newAV ();	439	AV *av = newAV ();
366		440
367	av_extend (av, req->result - 1);	441	av_extend (av, req->result - 1);
368		442
369	for (i = 0; i < req->result; ++i)	443	for (i = 0; i < req->result; ++i)
…		…
389	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
390	PUTBACK;	464	PUTBACK;
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
392	SPAGAIN;	466	SPAGAIN;
393		467
394	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
395
396	PUSHMARK (SP);	469	PUSHMARK (SP);
397	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
398	}	471	}
399	break;	472	break;
400		473
401	case REQ_GROUP:	474	case REQ_GROUP:
402	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
403		476
404	if (req->data)	477	if (req->sv1)
405	{	478	{
406	int i;	479	int i;
407	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
408		481
409	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
412	}	485	}
…		…
414		487
415	case REQ_NOP:	488	case REQ_NOP:
416	case REQ_BUSY:	489	case REQ_BUSY:
417	break;	490	break;
418		491
		492	case REQ_READLINK:
		493	if (req->result > 0)
		494	{
		495	SvCUR_set (req->sv2, req->result);
		496	*SvEND (req->sv2) = 0;
		497	PUSHs (req->sv2);
		498	}
		499	break;
		500
		501	case REQ_STAT:
		502	case REQ_LSTAT:
		503	case REQ_FSTAT:
		504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		505	PL_laststatval = req->result;
		506	PL_statcache = *(Stat_t *)(req->ptr2);
		507	PUSHs (sv_2mortal (newSViv (req->result)));
		508	break;
		509
		510	case REQ_READ:
		511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		512	*SvEND (req->sv2) = 0;
		513	PUSHs (sv_2mortal (newSViv (req->result)));
		514	break;
		515
419	default:	516	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	518	break;
422	}	519	}
423		520
		521	errno = req->errorno;
424		522
425	PUTBACK;	523	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
427	SPAGAIN;	525	SPAGAIN;
428		526
…		…
442	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
443		541
444	aio_grp_dec (grp);	542	aio_grp_dec (grp);
445	}	543	}
446		544
447	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	546	}
453		547
454	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
455	{	549	{
456	if (req->self)	550	if (req->self)
457	{	551	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
460	}	554	}
461		555
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		559
468	if (req->type == REQ_READDIR)	560	if (req->flags & FLAG_PTR2_FREE)
469	free (req->data2ptr);	561	free (req->ptr2);
470		562
471	Safefree (req);	563	Safefree (req);
472	}	564	}
473		565
474	static void req_cancel_subs (aio_req grp)	566	static void req_cancel_subs (aio_req grp)
…		…
476	aio_req sub;	568	aio_req sub;
477		569
478	if (grp->type != REQ_GROUP)	570	if (grp->type != REQ_GROUP)
479	return;	571	return;
480		572
481	SvREFCNT_dec (grp->fh2);	573	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	574	grp->sv2 = 0;
483		575
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
485	req_cancel (sub);	577	req_cancel (sub);
486	}	578	}
487		579
…		…
490	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
491		583
492	req_cancel_subs (req);	584	req_cancel_subs (req);
493	}	585	}
494		586
495	static int poll_cb ()
496	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)
503	{
504	LOCK (reslock);
505	req = reqq_shift (&res_queue);
506
507	if (req)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}
554
555	return count;
556	}
557
558	static void *aio_proc(void *arg);	587	static void *aio_proc (void *arg);
559		588
560	static void start_thread (void)	589	static void start_thread (void)
561	{	590	{
562	sigset_t fullsigset, oldsigset;
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));	591	worker *wrk = calloc (1, sizeof (worker));
566		592
567	if (!wrk)	593	if (!wrk)
568	croak ("unable to allocate worker thread data");	594	croak ("unable to allocate worker thread data");
569		595
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);	596	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578		597
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
580	{	599	{
581	wrk->prev = &wrk_first;	600	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;	601	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;	602	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;	603	wrk_first.next = wrk;
585	started++;	604	++started;
586	}	605	}
587	else	606	else
588	free (wrk);	607	free (wrk);
589		608
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);	609	UNLOCK (wrklock);
592	}	610	}
593		611
		612	static void maybe_start_thread ()
		613	{
		614	if (get_nthreads () >= wanted)
		615	return;
		616
		617	/* todo: maybe use idle here, but might be less exact */
		618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		619	return;
		620
		621	start_thread ();
		622	}
		623
594	static void req_send (aio_req req)	624	static void req_send (aio_req req)
595	{	625	{
596	while (started < wanted && nreqs >= started)	626	block_sig ();
597	start_thread ();
598		627
599	++nreqs;	628	++nreqs;
		629
		630	LOCK (reqlock);
		631	++nready;
		632	reqq_push (&req_queue, req);
		633	COND_SIGNAL (reqwait);
		634	UNLOCK (reqlock);
		635
		636	unblock_sig ();
		637
		638	maybe_start_thread ();
		639	}
		640
		641	static void end_thread (void)
		642	{
		643	aio_req req;
		644
		645	Newz (0, req, 1, aio_cb);
		646
		647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
600		649
601	LOCK (reqlock);	650	LOCK (reqlock);
602	reqq_push (&req_queue, req);	651	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);	652	COND_SIGNAL (reqwait);
604	UNLOCK (reqlock);	653	UNLOCK (reqlock);
605	}
606		654
607	static void end_thread (void)	655	LOCK (wrklock);
608	{	656	--started;
609	aio_req req;	657	UNLOCK (wrklock);
		658	}
610		659
611	Newz (0, req, 1, aio_cb);	660	static void set_max_idle (int nthreads)
612		661	{
613	req->type = REQ_QUIT;	662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
614	req->pri = PRI_MAX + PRI_BIAS;	663	max_idle = nthreads <= 0 ? 1 : nthreads;
615		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
616	req_send (req);
617	}	665	}
618		666
619	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
620	{	668	{
621	if (wanted < nthreads)	669	if (wanted < nthreads)
622	wanted = nthreads;	670	wanted = nthreads;
623	}	671	}
624		672
625	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
626	{	674	{
627	int cur = started;
628
629	if (wanted > nthreads)	675	if (wanted > nthreads)
630	wanted = nthreads;	676	wanted = nthreads;
631		677
632	while (cur > wanted)	678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
633	{	687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
634	end_thread ();	696	maybe_start_thread ();
635	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
636	}	702	}
		703	}
637		704
638	while (started > wanted)	705	static int poll_cb ()
		706	{
		707	dSP;
		708	int count = 0;
		709	int maxreqs = max_poll_reqs;
		710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
		712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
		718
		719	for (;;)
639	{	720	{
		721	for (;;)
		722	{
		723	maybe_start_thread ();
		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
		728	if (req)
		729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
		734	/* read any signals sent by the worker threads */
		735	char buf [4];
		736	while (read (respipe [0], buf, 4) == 4)
		737	;
		738	}
		739	}
		740
		741	UNLOCK (reslock);
		742
		743	if (!req)
		744	break;
		745
		746	--nreqs;
		747
		748	if (req->type == REQ_GROUP && req->size)
		749	{
		750	req->int1 = 1; /* mark request as delayed */
		751	continue;
		752	}
		753	else
		754	{
		755	if (!req_invoke (req))
		756	{
		757	req_destroy (req);
		758	unblock_sig ();
		759	croak (0);
		760	}
		761
		762	count++;
		763	}
		764
		765	req_destroy (req);
		766
		767	if (maxreqs && !--maxreqs)
		768	break;
		769
		770	if (max_poll_time)
		771	{
		772	gettimeofday (&tv_now, 0);
		773
		774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		775	break;
		776	}
		777	}
		778
		779	if (nreqs <= max_outstanding)
		780	break;
		781
640	poll_wait ();	782	poll_wait ();
641	poll_cb ();	783
		784	++maxreqs;
642	}	785	}
		786
		787	unblock_sig ();
		788	return count;
643	}	789	}
644		790
645	static void create_pipe ()	791	static void create_pipe ()
646	{	792	{
647	if (pipe (respipe))	793	if (pipe (respipe))
…		…
664	/*	810	/*
665	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
666	* normal read/write by using a mutex. slows down execution a lot,	812	* normal read/write by using a mutex. slows down execution a lot,
667	* but that's your problem, not mine.	813	* but that's your problem, not mine.
668	*/	814	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
670		816
671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
672	{	818	{
673	ssize_t res;	819	ssize_t res;
674	off_t ooffset;	820	off_t ooffset;
…		…
697		843
698	return res;	844	return res;
699	}	845	}
700	#endif	846	#endif
701		847
		848	#ifndef HAVE_FUTIMES
		849
		850	# define utimes(path,times) aio_utimes (path, times)
		851	# define futimes(fd,times) aio_futimes (fd, times)
		852
		853	int aio_utimes (const char *filename, const struct timeval times[2])
		854	{
		855	if (times)
		856	{
		857	struct utimbuf buf;
		858
		859	buf.actime = times[0].tv_sec;
		860	buf.modtime = times[1].tv_sec;
		861
		862	return utime (filename, &buf);
		863	}
		864	else
		865	return utime (filename, 0);
		866	}
		867
		868	int aio_futimes (int fd, const struct timeval tv[2])
		869	{
		870	errno = ENOSYS;
		871	return -1;
		872	}
		873
		874	#endif
		875
702	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
703	# define fdatasync fsync	877	# define fdatasync fsync
704	#endif	878	#endif
705		879
706	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
707	# define readahead aio_readahead	881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
708		882
709	static ssize_t readahead (int fd, off_t offset, size_t count)	883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
710	{	884	{
711	dBUF;	885	dBUF;
712		886
713	while (count > 0)	887	while (count > 0)
714	{	888	{
…		…
719	count -= len;	893	count -= len;
720	}	894	}
721		895
722	errno = 0;	896	errno = 0;
723	}	897	}
		898
724	#endif	899	#endif
725		900
726	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
728		903
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
730		905
731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732	{	907	{
733	struct dirent *e;	908	struct dirent *e;
734	int errorno;	909	int errorno;
…		…
773	{	948	{
774	off_t sbytes;	949	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776		951
777	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
779	res = sbytes;	954	res = sbytes;
780	}	955	}
781		956
782	# elif __hpux	957	# elif __hpux
783	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
861	int memofs = 0;	1036	int memofs = 0;
862	int res = 0;	1037	int res = 0;
863	int errorno;	1038	int errorno;
864		1039
865	LOCK (wrklock);	1040	LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);	1041	self->dirp = dirp = opendir (req->ptr1);
867	self->dbuf = u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
		1044	req->ptr2 = names = malloc (memlen);
868	UNLOCK (wrklock);	1045	UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871		1046
872	if (dirp && u && names)	1047	if (dirp && u && names)
873	for (;;)	1048	for (;;)
874	{	1049	{
875	errno = 0;	1050	errno = 0;
…		…
888		1063
889	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
890	{	1065	{
891	memlen *= 2;	1066	memlen *= 2;
892	LOCK (wrklock);	1067	LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
894	UNLOCK (wrklock);	1069	UNLOCK (wrklock);
895		1070
896	if (!names)	1071	if (!names)
897	break;	1072	break;
898	}	1073	}
…		…
911	/*****************************************************************************/	1086	/*****************************************************************************/
912		1087
913	static void *aio_proc (void *thr_arg)	1088	static void *aio_proc (void *thr_arg)
914	{	1089	{
915	aio_req req;	1090	aio_req req;
916	int type;	1091	struct timespec ts;
917	worker *self = (worker *)thr_arg;	1092	worker *self = (worker *)thr_arg;
918		1093
919	do	1094	/* try to distribute timeouts somewhat evenly */
		1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1096	* (1000000000UL / 1024UL);
		1097
		1098	for (;;)
920	{	1099	{
		1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1101
921	LOCK (reqlock);	1102	LOCK (reqlock);
922		1103
923	for (;;)	1104	for (;;)
924	{	1105	{
925	self->req = req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
926		1107
927	if (req)	1108	if (req)
928	break;	1109	break;
929		1110
930	pthread_cond_wait (&reqwait, &reqlock);	1111	++idle;
		1112
		1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1114	== ETIMEDOUT)
		1115	{
		1116	if (idle > max_idle)
		1117	{
		1118	--idle;
		1119	UNLOCK (reqlock);
		1120	LOCK (wrklock);
		1121	--started;
		1122	UNLOCK (wrklock);
		1123	goto quit;
		1124	}
		1125
		1126	/* we are allowed to idle, so do so without any timeout */
		1127	COND_WAIT (reqwait, reqlock);
		1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1129	}
		1130
		1131	--idle;
931	}	1132	}
		1133
		1134	--nready;
932		1135
933	UNLOCK (reqlock);	1136	UNLOCK (reqlock);
934		1137
935	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937		1139
938	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)	1141	switch (req->type)
940	{	1142	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1144	? pread (req->int1, req->ptr1, req->size, req->offs)
		1145	: read (req->int1, req->ptr1, req->size); break;
		1146	case REQ_WRITE: req->result = req->offs >= 0
		1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1148	: write (req->int1, req->ptr1, req->size); break;
943		1149
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
946		1152
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
950		1156
		1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1161
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
958		1172
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
961	case REQ_READDIR: scandir_ (req, self); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
962		1176
963	case REQ_BUSY:	1177	case REQ_BUSY:
964	{	1178	{
965	struct timeval tv;	1179	struct timeval tv;
966		1180
967	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
968	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
969		1183
970	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
971	}	1185	}
972		1186
		1187	case REQ_UTIME:
		1188	case REQ_FUTIME:
		1189	{
		1190	struct timeval tv[2];
		1191	struct timeval *times;
		1192
		1193	if (req->nv1 != -1. || req->nv2 != -1.)
		1194	{
		1195	tv[0].tv_sec = req->nv1;
		1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1197	tv[1].tv_sec = req->nv2;
		1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1199
		1200	times = tv;
		1201	}
		1202	else
		1203	times = 0;
		1204
		1205
		1206	req->result = req->type == REQ_FUTIME
		1207	? futimes (req->int1, times)
		1208	: utimes (req->ptr1, times);
		1209	}
		1210
973	case REQ_GROUP:	1211	case REQ_GROUP:
974	case REQ_NOP:	1212	case REQ_NOP:
		1213	break;
		1214
975	case REQ_QUIT:	1215	case REQ_QUIT:
976	break;	1216	goto quit;
977		1217
978	default:	1218	default:
979	req->result = ENOSYS;	1219	req->result = -1;
980	break;	1220	break;
981	}	1221	}
982		1222
983	req->errorno = errno;	1223	req->errorno = errno;
984		1224
985	LOCK (reslock);	1225	LOCK (reslock);
986		1226
		1227	++npending;
		1228
987	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
988	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);	1232	write (respipe [1], &respipe, 1);
		1233
		1234	/* optionally signal the main thread asynchronously */
		1235	if (main_sig)
		1236	pthread_kill (main_tid, main_sig);
		1237	}
990		1238
991	self->req = 0;	1239	self->req = 0;
992	worker_clear (self);	1240	worker_clear (self);
993		1241
994	UNLOCK (reslock);	1242	UNLOCK (reslock);
995	}	1243	}
996	while (type != REQ_QUIT);
997		1244
		1245	quit:
998	LOCK (wrklock);	1246	LOCK (wrklock);
999	worker_free (self);	1247	worker_free (self);
1000	UNLOCK (wrklock);	1248	UNLOCK (wrklock);
1001		1249
1002	return 0;	1250	return 0;
…		…
1033	static void atfork_child (void)	1281	static void atfork_child (void)
1034	{	1282	{
1035	aio_req prv;	1283	aio_req prv;
1036		1284
1037	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);	1286	req_destroy (prv);
1039		1287
1040	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);	1289	req_destroy (prv);
1042		1290
1043	while (wrk_first.next != &wrk_first)	1291	while (wrk_first.next != &wrk_first)
1044	{	1292	{
1045	worker *wrk = wrk_first.next;	1293	worker *wrk = wrk_first.next;
1046		1294
1047	if (wrk->req)	1295	if (wrk->req)
1048	req_free (wrk->req);	1296	req_destroy (wrk->req);
1049		1297
1050	worker_clear (wrk);	1298	worker_clear (wrk);
1051	worker_free (wrk);	1299	worker_free (wrk);
1052	}	1300	}
1053		1301
1054	started = 0;	1302	started = 0;
		1303	idle = 0;
1055	nreqs = 0;	1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
1056		1307
1057	close (respipe [0]);	1308	close (respipe [0]);
1058	close (respipe [1]);	1309	close (respipe [1]);
1059	create_pipe ();	1310	create_pipe ();
1060		1311
…		…
1087	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1088		1339
1089	BOOT:	1340	BOOT:
1090	{	1341	{
1091	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1095		1351
1096	create_pipe ();	1352	create_pipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1098	}	1354	}
1099		1355
1100	void	1356	void
1101	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
1102	int nthreads
1103	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
1104		1361
1105	void	1362	void
1106	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
1107	int nthreads
1108	PROTOTYPE: $	1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
1109		1367
1110	void	1368	void
		1369	min_parallel (int nthreads)
		1370	PROTOTYPE: $
		1371
		1372	void
		1373	max_parallel (int nthreads)
		1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
		1381
		1382	int
		1383	max_outstanding (int maxreqs)
		1384	PROTOTYPE: $
		1385	CODE:
		1386	RETVAL = max_outstanding;
		1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
		1390
		1391	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1117	PPCODE:	1394	PPCODE:
1118	{	1395	{
1119	dREQ;	1396	dREQ;
1120		1397
1121	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1122	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1123	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1124	req->fd = flags;	1401	req->int1 = flags;
1125	req->mode = mode;	1402	req->mode = mode;
1126		1403
1127	REQ_SEND;	1404	REQ_SEND;
1128	}	1405	}
1129		1406
1130	void	1407	void
1131	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1135	ALIAS:	1410	ALIAS:
1136	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1139	PPCODE:	1414	PPCODE:
1140	{	1415	{
1141	dREQ;	1416	dREQ;
1142		1417
1143	req->type = ix;	1418	req->type = ix;
1144	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1146		1421
1147	REQ_SEND (req);	1422	REQ_SEND (req);
1148	}	1423	}
1149		1424
1150	void	1425	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:	1427	ALIAS:
1159	aio_read = REQ_READ	1428	aio_read = REQ_READ
1160	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1161	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1162	PPCODE:	1431	PPCODE:
1163	{	1432	{
1164	aio_req req;
1165	STRLEN svlen;	1433	STRLEN svlen;
1166	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
1167		1435
1168	SvUPGRADE (data, SVt_PV);	1436	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);	1437	SvPOK_on (data);
…		…
1181	length = svlen - dataoffset;	1449	length = svlen - dataoffset;
1182	}	1450	}
1183	else	1451	else
1184	{	1452	{
1185	/* read: grow scalar as necessary */	1453	/* read: grow scalar as necessary */
1186	svptr = SvGROW (data, length + dataoffset);	1454	svptr = SvGROW (data, length + dataoffset + 1);
1187	}	1455	}
1188		1456
1189	if (length < 0)	1457	if (length < 0)
1190	croak ("length must not be negative");	1458	croak ("length must not be negative");
1191		1459
1192	{	1460	{
1193	dREQ;	1461	dREQ;
1194		1462
1195	req->type = ix;	1463	req->type = ix;
1196	req->fh = newSVsv (fh);	1464	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1198	: IoOFP (sv_2io (fh)));	1466	: IoOFP (sv_2io (fh)));
1199	req->offset = offset;	1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1200	req->length = length;	1468	req->size = length;
1201	req->data = SvREFCNT_inc (data);	1469	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	1470	req->ptr1 = (char *)svptr + dataoffset;
		1471	req->stroffset = dataoffset;
1203		1472
1204	if (!SvREADONLY (data))	1473	if (!SvREADONLY (data))
1205	{	1474	{
1206	SvREADONLY_on (data);	1475	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	1476	req->flags |= FLAG_SV2_RO_OFF;
1208	}	1477	}
1209		1478
1210	REQ_SEND;	1479	REQ_SEND;
1211	}	1480	}
1212	}	1481	}
1213		1482
1214	void	1483	void
		1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1485	PROTOTYPE: $$;$
		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->sv1 = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1497	req->sv2 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1216	SV * out_fh
1217	SV * in_fh
1218	UV in_offset
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$	1505	PROTOTYPE: $$$$;$
1222	PPCODE:	1506	PPCODE:
1223	{	1507	{
1224	dREQ;	1508	dREQ;
1225		1509
1226	req->type = REQ_SENDFILE;	1510	req->type = REQ_SENDFILE;
1227	req->fh = newSVsv (out_fh);	1511	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1229	req->fh2 = newSVsv (in_fh);	1513	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1231	req->offset = in_offset;	1515	req->offs = SvVAL64 (in_offset);
1232	req->length = length;	1516	req->size = length;
1233		1517
1234	REQ_SEND;	1518	REQ_SEND;
1235	}	1519	}
1236		1520
1237	void	1521	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$	1523	PROTOTYPE: $$$;$
1244	PPCODE:	1524	PPCODE:
1245	{	1525	{
1246	dREQ;	1526	dREQ;
1247		1527
1248	req->type = REQ_READAHEAD;	1528	req->type = REQ_READAHEAD;
1249	req->fh = newSVsv (fh);	1529	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1251	req->offset = offset;	1531	req->offs = SvVAL64 (offset);
1252	req->length = length;	1532	req->size = length;
1253		1533
1254	REQ_SEND;	1534	REQ_SEND;
1255	}	1535	}
1256		1536
1257	void	1537	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	1539	ALIAS:
1262	aio_stat = REQ_STAT	1540	aio_stat = REQ_STAT
1263	aio_lstat = REQ_LSTAT	1541	aio_lstat = REQ_LSTAT
1264	PPCODE:	1542	PPCODE:
1265	{	1543	{
1266	dREQ;	1544	dREQ;
1267		1545
1268	New (0, req->statdata, 1, Stat_t);	1546	req->ptr2 = malloc (sizeof (Stat_t));
1269	if (!req->statdata)	1547	if (!req->ptr2)
1270	{	1548	{
1271	req_free (req);	1549	req_destroy (req);
1272	croak ("out of memory during aio_req->statdata allocation");	1550	croak ("out of memory during aio_stat statdata allocation");
1273	}	1551	}
		1552
		1553	req->flags |= FLAG_PTR2_FREE;
		1554	req->sv1 = newSVsv (fh_or_path);
1274		1555
1275	if (SvPOK (fh_or_path))	1556	if (SvPOK (fh_or_path))
1276	{	1557	{
1277	req->type = ix;	1558	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);	1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280	}	1560	}
1281	else	1561	else
1282	{	1562	{
1283	req->type = REQ_FSTAT;	1563	req->type = REQ_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}	1565	}
1287		1566
1288	REQ_SEND;	1567	REQ_SEND;
1289	}	1568	}
1290		1569
1291	void	1570	void
		1571	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1578	req->sv1 = newSVsv (fh_or_path);
		1579
		1580	if (SvPOK (fh_or_path))
		1581	{
		1582	req->type = REQ_UTIME;
		1583	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1584	}
		1585	else
		1586	{
		1587	req->type = REQ_FUTIME;
		1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1589	}
		1590
		1591	REQ_SEND;
		1592	}
		1593
		1594	void
		1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1596	PPCODE:
		1597	{
		1598	dREQ;
		1599
		1600	req->mode = mode;
		1601	req->sv1 = newSVsv (fh_or_path);
		1602
		1603	if (SvPOK (fh_or_path))
		1604	{
		1605	req->type = REQ_CHMOD;
		1606	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1607	}
		1608	else
		1609	{
		1610	req->type = REQ_FCHMOD;
		1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1612	}
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1619	PPCODE:
		1620	{
		1621	dREQ;
		1622
		1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1625	req->sv1 = newSVsv (fh_or_path);
		1626
		1627	if (SvPOK (fh_or_path))
		1628	{
		1629	req->type = REQ_CHOWN;
		1630	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1631	}
		1632	else
		1633	{
		1634	req->type = REQ_FCHOWN;
		1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1636	}
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1643	ALIAS:
1296	aio_unlink = REQ_UNLINK	1644	aio_unlink = REQ_UNLINK
1297	aio_rmdir = REQ_RMDIR	1645	aio_rmdir = REQ_RMDIR
1298	aio_readdir = REQ_READDIR	1646	aio_readdir = REQ_READDIR
1299	PPCODE:	1647	PPCODE:
1300	{	1648	{
1301	dREQ;	1649	dREQ;
1302		1650
1303	req->type = ix;	1651	req->type = ix;
1304	req->data = newSVsv (pathname);	1652	req->sv1 = newSVsv (pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1653	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1654
		1655	REQ_SEND;
		1656	}
		1657
		1658	void
		1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1660	PPCODE:
		1661	{
		1662	dREQ;
1306		1663
		1664	req->type = REQ_MKDIR;
		1665	req->sv1 = newSVsv (pathname);
		1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1667	req->mode = mode;
		1668
1307	REQ_SEND;	1669	REQ_SEND;
1308	}	1670	}
1309		1671
1310	void	1672	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:	1674	ALIAS:
1316	aio_link = REQ_LINK	1675	aio_link = REQ_LINK
1317	aio_symlink = REQ_SYMLINK	1676	aio_symlink = REQ_SYMLINK
1318	aio_rename = REQ_RENAME	1677	aio_rename = REQ_RENAME
1319	PPCODE:	1678	PPCODE:
1320	{	1679	{
1321	dREQ;	1680	dREQ;
1322		1681
1323	req->type = ix;	1682	req->type = ix;
1324	req->fh = newSVsv (oldpath);	1683	req->sv2 = newSVsv (oldpath);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1684	req->ptr2 = SvPVbyte_nolen (req->sv2);
1326	req->data = newSVsv (newpath);	1685	req->sv1 = newSVsv (newpath);
1327	req->dataptr = SvPVbyte_nolen (req->data);	1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328		1687
1329	REQ_SEND;	1688	REQ_SEND;
1330	}	1689	}
1331		1690
1332	void	1691	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1693	PPCODE:
1337	{	1694	{
1338	dREQ;	1695	dREQ;
		1696
		1697	req->type = REQ_MKNOD;
		1698	req->sv1 = newSVsv (pathname);
		1699	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1700	req->mode = (mode_t)mode;
		1701	req->offs = dev;
		1702
		1703	REQ_SEND;
		1704	}
		1705
		1706	void
		1707	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
1339		1711
1340	req->type = REQ_BUSY;	1712	req->type = REQ_BUSY;
1341	req->fd = delay < 0. ? 0 : delay;	1713	req->nv1 = delay < 0. ? 0. : delay;
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1343		1714
1344	REQ_SEND;	1715	REQ_SEND;
1345	}	1716	}
1346		1717
1347	void	1718	void
1348	aio_group (callback=&PL_sv_undef)	1719	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$	1720	PROTOTYPE: ;$
1351	PPCODE:	1721	PPCODE:
1352	{	1722	{
1353	dREQ;	1723	dREQ;
1354		1724
1355	req->type = REQ_GROUP;	1725	req->type = REQ_GROUP;
		1726
1356	req_send (req);	1727	req_send (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1359	}	1729	}
1360		1730
1361	void	1731	void
1362	aio_nop (callback=&PL_sv_undef)	1732	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback
1364	PPCODE:	1733	PPCODE:
1365	{	1734	{
1366	dREQ;	1735	dREQ;
1367		1736
1368	req->type = REQ_NOP;	1737	req->type = REQ_NOP;
1369		1738
1370	REQ_SEND;	1739	REQ_SEND;
1371	}	1740	}
1372		1741
1373	void	1742	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1743	aioreq_pri (int pri = 0)
1375	CODE:	1744	PROTOTYPE: ;$
		1745	CODE:
		1746	RETVAL = next_pri - PRI_BIAS;
		1747	if (items > 0)
		1748	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1749	if (pri < PRI_MIN) pri = PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1750	if (pri > PRI_MAX) pri = PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1751	next_pri = pri + PRI_BIAS;
		1752	}
		1753	OUTPUT:
		1754	RETVAL
1379		1755
1380	void	1756	void
1381	aioreq_nice (int nice = 0)	1757	aioreq_nice (int nice = 0)
1382	CODE:	1758	CODE:
1383	nice = next_pri - nice;	1759	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1760	if (nice < PRI_MIN) nice = PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1761	if (nice > PRI_MAX) nice = PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1762	next_pri = nice + PRI_BIAS;
1387		1763
1388	void	1764	void
1389	flush ()	1765	flush ()
1390	PROTOTYPE:	1766	PROTOTYPE:
1391	CODE:	1767	CODE:
…		…
1393	{	1769	{
1394	poll_wait ();	1770	poll_wait ();
1395	poll_cb ();	1771	poll_cb ();
1396	}	1772	}
1397		1773
1398	void	1774	int
1399	poll()	1775	poll()
1400	PROTOTYPE:	1776	PROTOTYPE:
1401	CODE:	1777	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1778	poll_wait ();
1405	poll_cb ();	1779	RETVAL = poll_cb ();
1406	}	1780	OUTPUT:
		1781	RETVAL
1407		1782
1408	int	1783	int
1409	poll_fileno()	1784	poll_fileno()
1410	PROTOTYPE:	1785	PROTOTYPE:
1411	CODE:	1786	CODE:
…		…
1423		1798
1424	void	1799	void
1425	poll_wait()	1800	poll_wait()
1426	PROTOTYPE:	1801	PROTOTYPE:
1427	CODE:	1802	CODE:
1428	if (nreqs)
1429	poll_wait ();	1803	poll_wait ();
		1804
		1805	void
		1806	setsig (int signum = SIGIO)
		1807	PROTOTYPE: ;$
		1808	CODE:
		1809	{
		1810	if (block_sig_level)
		1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1812
		1813	LOCK (reslock);
		1814	main_tid = pthread_self ();
		1815	main_sig = signum;
		1816	UNLOCK (reslock);
		1817
		1818	if (main_sig && npending)
		1819	pthread_kill (main_tid, main_sig);
		1820	}
		1821
		1822	void
		1823	aio_block (SV *cb)
		1824	PROTOTYPE: &
		1825	PPCODE:
		1826	{
		1827	int count;
		1828
		1829	block_sig ();
		1830	PUSHMARK (SP);
		1831	PUTBACK;
		1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1833	SPAGAIN;
		1834	unblock_sig ();
		1835
		1836	if (SvTRUE (ERRSV))
		1837	croak (0);
		1838
		1839	XSRETURN (count);
		1840	}
1430		1841
1431	int	1842	int
1432	nreqs()	1843	nreqs()
1433	PROTOTYPE:	1844	PROTOTYPE:
1434	CODE:	1845	CODE:
1435	RETVAL = nreqs;	1846	RETVAL = nreqs;
1436	OUTPUT:	1847	OUTPUT:
1437	RETVAL	1848	RETVAL
1438		1849
		1850	int
		1851	nready()
		1852	PROTOTYPE:
		1853	CODE:
		1854	RETVAL = get_nready ();
		1855	OUTPUT:
		1856	RETVAL
		1857
		1858	int
		1859	npending()
		1860	PROTOTYPE:
		1861	CODE:
		1862	RETVAL = get_npending ();
		1863	OUTPUT:
		1864	RETVAL
		1865
		1866	int
		1867	nthreads()
		1868	PROTOTYPE:
		1869	CODE:
		1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1871	RETVAL = started;
		1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1873	OUTPUT:
		1874	RETVAL
		1875
1439	PROTOTYPES: DISABLE	1876	PROTOTYPES: DISABLE
1440		1877
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1879
1443	void	1880	void
…		…
1458	PPCODE:	1895	PPCODE:
1459	{	1896	{
1460	int i;	1897	int i;
1461	aio_req req;	1898	aio_req req;
1462		1899
		1900	if (main_sig && !block_sig_level)
		1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1902
1463	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		1905
1466	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1467	{	1907	{
1468	if (GIMME_V != G_VOID)	1908	if (GIMME_V != G_VOID)
…		…
1470		1910
1471	req = SvAIO_REQ (ST (i));	1911	req = SvAIO_REQ (ST (i));
1472		1912
1473	if (req)	1913	if (req)
1474	{	1914	{
1475	++grp->length;	1915	++grp->size;
1476	req->grp = grp;	1916	req->grp = grp;
1477		1917
1478	req->grp_prev = 0;	1918	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;	1919	req->grp_next = grp->grp_first;
1480		1920
…		…
1494	void	1934	void
1495	result (aio_req grp, ...)	1935	result (aio_req grp, ...)
1496	CODE:	1936	CODE:
1497	{	1937	{
1498	int i;	1938	int i;
		1939	AV *av;
		1940
		1941	grp->errorno = errno;
		1942
1499	AV *av = newAV ();	1943	av = newAV ();
1500		1944
1501	for (i = 1; i < items; ++i )	1945	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1946	av_push (av, newSVsv (ST (i)));
1503		1947
1504	SvREFCNT_dec (grp->data);	1948	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1949	grp->sv1 = (SV *)av;
1506	}	1950	}
		1951
		1952	void
		1953	errno (aio_req grp, int errorno = errno)
		1954	CODE:
		1955	grp->errorno = errorno;
1507		1956
1508	void	1957	void
1509	limit (aio_req grp, int limit)	1958	limit (aio_req grp, int limit)
1510	CODE:	1959	CODE:
1511	grp->fd2 = limit;	1960	grp->int2 = limit;
1512	aio_grp_feed (grp);	1961	aio_grp_feed (grp);
1513		1962
1514	void	1963	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1964	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1965	CODE:
1517	{	1966	{
1518	SvREFCNT_dec (grp->fh2);	1967	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1968	grp->sv2 = newSVsv (callback);
1520		1969
1521	if (grp->fd2 <= 0)	1970	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1971	grp->int2 = 2;
1523		1972
1524	aio_grp_feed (grp);	1973	aio_grp_feed (grp);
1525	}	1974	}
1526		1975

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