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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 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 && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "autoconf/config.h"
18		10
19	#include <pthread.h>
20
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>	14	#include <sys/time.h>
24	#include <sys/select.h>	15	#include <sys/select.h>
25	#include <sys/types.h>	16	#include <sys/types.h>
26	#include <sys/stat.h>	17	#include <sys/stat.h>
27	#include <limits.h>	18	#include <limits.h>
28	#include <unistd.h>	19	#include <unistd.h>
29	#include <fcntl.h>	20	#include <fcntl.h>
30	#include <signal.h>	21	#include <signal.h>
31	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
32		24
33	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
34	# if __linux	26	# if __linux
35	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
36	# elif __freebsd	28	# elif __freebsd
…		…
43	# else	35	# else
44	# error sendfile support requested but not available	36	# error sendfile support requested but not available
45	# endif	37	# endif
46	#endif	38	#endif
47		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
48	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
49	#ifndef NAME_MAX	44	#ifndef NAME_MAX
50	# define NAME_MAX 4096	45	# define NAME_MAX 4096
51	#endif	46	#endif
52		47
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77
78	/* buffer size for various temporary buffers */	48	/* buffer size for various temporary buffers */
79	#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
80		57
81	#define dBUF \	58	#define dBUF \
82	char *aio_buf; \	59	char *aio_buf; \
83	LOCK (wrklock); \	60	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \	62	UNLOCK (wrklock); \
86	if (!aio_buf) \	63	if (!aio_buf) \
87	return -1;	64	return -1;
88		65
		66	typedef SV SV8; /* byte-sv, used for argument-checking */
		67
89	enum {	68	enum {
90	REQ_QUIT,	69	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
93	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
94	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,
95	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
99	REQ_GROUP, REQ_NOP,	81	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,	82	REQ_BUSY,
101	};	83	};
102		84
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
105		87
106	typedef struct aio_cb	88	typedef struct aio_cb
107	{	89	{
108	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
109		91
110	SV *data, *callback;	92	SV *callback;
111	SV *fh, *fh2;	93	SV *sv1, *sv2;
112	void *dataptr, *data2ptr;	94	void *ptr1, *ptr2;
113	Stat_t *statdata;
114	off_t offset;	95	off_t offs;
115	size_t length;	96	size_t size;
116	ssize_t result;	97	ssize_t result;
		98	double nv1, nv2;
117		99
118	STRLEN dataoffset;	100	STRLEN stroffset;
119	int type;	101	int type;
120	int fd, fd2;	102	int int1, int2, int3;
121	int errorno;	103	int errorno;
122	mode_t mode; /* open */	104	mode_t mode; /* open */
123		105
124	unsigned char flags;	106	unsigned char flags;
125	unsigned char pri;	107	unsigned char pri;
…		…
127	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;	111	} aio_cb;
130		112
131	enum {	113	enum {
132	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) */
133	};	117	};
134		118
135	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
137		121
…		…
142	DEFAULT_PRI = 0,	126	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,	127	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};	129	};
146		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
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;	177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148		178
149	static unsigned int started, wanted;	179	static unsigned int started, idle, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159		180
160	/* worker threads management */	181	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	182	static mutex_t wrklock = MUTEX_INIT;
162		183
163	typedef struct worker {	184	typedef struct worker {
164	/* locked by wrklock */	185	/* locked by wrklock */
165	struct worker *prev, *next;	186	struct worker *prev, *next;
166		187
167	pthread_t tid;	188	thread_t tid;
168		189
169	/* locked by reslock, reqlock or wrklock */	190	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */	191	aio_req req; /* currently processed request */
171	void *dbuf;	192	void *dbuf;
172	DIR *dirp;	193	DIR *dirp;
…		…
196		217
197	free (wrk);	218	free (wrk);
198	}	219	}
199		220
200	static volatile unsigned int nreqs, nready, npending;	221	static volatile unsigned int nreqs, nready, npending;
		222	static volatile unsigned int max_idle = 4;
201	static volatile unsigned int max_outstanding = 0xffffffff;	223	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];	224	static int respipe [2];
203		225
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	226	static mutex_t reslock = MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	227	static mutex_t reqlock = MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	228	static cond_t reqwait = COND_INIT;
207		229
208	#if WORDREAD_UNSAFE	230	#if WORDACCESS_UNSAFE
209		231
210	static unsigned int get_nready ()	232	static unsigned int get_nready ()
211	{	233	{
212	unsigned int retval;	234	unsigned int retval;
213		235
…		…
227	UNLOCK (reslock);	249	UNLOCK (reslock);
228		250
229	return retval;	251	return retval;
230	}	252	}
231		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
232	#else	265	#else
233		266
234	# define get_nready() nready	267	# define get_nready() nready
235	# define get_npending() npending	268	# define get_npending() npending
		269	# define get_nthreads() started
236		270
237	#endif	271	#endif
238		272
239	/*	273	/*
240	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
…		…
288	}	322	}
289		323
290	abort ();	324	abort ();
291	}	325	}
292		326
293	static int poll_cb (int max);	327	static int poll_cb ();
294	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
295	static void req_free (aio_req req);	329	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	330	static void req_cancel (aio_req req);
297		331
298	/* must be called at most once */	332	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
300	{	334	{
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	354	}
321		355
322	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
323	{	357	{
		358	block_sig ();
		359
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
325	{	361	{
326	int old_len = grp->length;	362	int old_len = grp->size;
327		363
328	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
329	{	365	{
330	dSP;	366	dSP;
331		367
332	ENTER;	368	ENTER;
333	SAVETMPS;	369	SAVETMPS;
334	PUSHMARK (SP);	370	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	372	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	374	SPAGAIN;
339	FREETMPS;	375	FREETMPS;
340	LEAVE;	376	LEAVE;
341	}	377	}
342		378
343	/* stop if no progress has been made */	379	/* stop if no progress has been made */
344	if (old_len == grp->length)	380	if (old_len == grp->size)
345	{	381	{
346	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
347	grp->fh2 = 0;	383	grp->sv2 = 0;
348	break;	384	break;
349	}	385	}
350	}	386	}
		387
		388	unblock_sig ();
351	}	389	}
352		390
353	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
354	{	392	{
355	--grp->length;	393	--grp->size;
356		394
357	/* call feeder, if applicable */	395	/* call feeder, if applicable */
358	aio_grp_feed (grp);	396	aio_grp_feed (grp);
359		397
360	/* finish, if done */	398	/* finish, if done */
361	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
362	{	400	{
		401	block_sig ();
		402
363	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
364	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
365	}	412	}
366	}	413	}
367		414
368	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
369	{	416	{
370	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
371		421
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
373	{	423	{
374	ENTER;	424	ENTER;
375	SAVETMPS;	425	SAVETMPS;
…		…
383	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
384		434
385	if (req->result >= 0)	435	if (req->result >= 0)
386	{	436	{
387	int i;	437	int i;
388	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
389	AV *av = newAV ();	439	AV *av = newAV ();
390		440
391	av_extend (av, req->result - 1);	441	av_extend (av, req->result - 1);
392		442
393	for (i = 0; i < req->result; ++i)	443	for (i = 0; i < req->result; ++i)
…		…
413	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
414	PUTBACK;	464	PUTBACK;
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
416	SPAGAIN;	466	SPAGAIN;
417		467
418	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
419
420	PUSHMARK (SP);	469	PUSHMARK (SP);
421	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
422	}	471	}
423	break;	472	break;
424		473
425	case REQ_GROUP:	474	case REQ_GROUP:
426	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
427		476
428	if (req->data)	477	if (req->sv1)
429	{	478	{
430	int i;	479	int i;
431	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
432		481
433	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
436	}	485	}
…		…
438		487
439	case REQ_NOP:	488	case REQ_NOP:
440	case REQ_BUSY:	489	case REQ_BUSY:
441	break;	490	break;
442		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
443	default:	516	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	518	break;
446	}	519	}
447		520
…		…
467	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
468		541
469	aio_grp_dec (grp);	542	aio_grp_dec (grp);
470	}	543	}
471		544
472	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	546	}
478		547
479	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
480	{	549	{
481	if (req->self)	550	if (req->self)
482	{	551	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
485	}	554	}
486		555
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492		559
493	if (req->type == REQ_READDIR)	560	if (req->flags & FLAG_PTR2_FREE)
494	free (req->data2ptr);	561	free (req->ptr2);
495		562
496	Safefree (req);	563	Safefree (req);
497	}	564	}
498		565
499	static void req_cancel_subs (aio_req grp)	566	static void req_cancel_subs (aio_req grp)
…		…
501	aio_req sub;	568	aio_req sub;
502		569
503	if (grp->type != REQ_GROUP)	570	if (grp->type != REQ_GROUP)
504	return;	571	return;
505		572
506	SvREFCNT_dec (grp->fh2);	573	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	574	grp->sv2 = 0;
508		575
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
510	req_cancel (sub);	577	req_cancel (sub);
511	}	578	}
512		579
…		…
515	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
516		583
517	req_cancel_subs (req);	584	req_cancel_subs (req);
518	}	585	}
519		586
520	static void *aio_proc(void *arg);	587	static void *aio_proc (void *arg);
521		588
522	static void start_thread (void)	589	static void start_thread (void)
523	{	590	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));	591	worker *wrk = calloc (1, sizeof (worker));
528		592
529	if (!wrk)	593	if (!wrk)
530	croak ("unable to allocate worker thread data");	594	croak ("unable to allocate worker thread data");
531		595
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);	596	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543		597
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
545	{	599	{
546	wrk->prev = &wrk_first;	600	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;	601	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;	602	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;	603	wrk_first.next = wrk;
550	++started;	604	++started;
551	}	605	}
552	else	606	else
553	free (wrk);	607	free (wrk);
554		608
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);	609	UNLOCK (wrklock);
557	}	610	}
558		611
559	static void maybe_start_thread ()	612	static void maybe_start_thread ()
560	{	613	{
561	#if 0	614	if (get_nthreads () >= wanted)
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;	615	return;
568		616
569	if (nready <= nreqs - get_nready () - get_npending ())	617	/* todo: maybe use idle here, but might be less exact */
		618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
570	return;	619	return;
571		620
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();	621	start_thread ();
591	}	622	}
592		623
593	static void req_send (aio_req req)	624	static void req_send (aio_req req)
594	{	625	{
		626	block_sig ();
		627
595	++nreqs;	628	++nreqs;
596		629
597	LOCK (reqlock);	630	LOCK (reqlock);
598	++nready;	631	++nready;
599	reqq_push (&req_queue, req);	632	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);	633	COND_SIGNAL (reqwait);
601	UNLOCK (reqlock);	634	UNLOCK (reqlock);
		635
		636	unblock_sig ();
602		637
603	maybe_start_thread ();	638	maybe_start_thread ();
604	}	639	}
605		640
606	static void end_thread (void)	641	static void end_thread (void)
…		…
610	Newz (0, req, 1, aio_cb);	645	Newz (0, req, 1, aio_cb);
611		646
612	req->type = REQ_QUIT;	647	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;	648	req->pri = PRI_MAX + PRI_BIAS;
614		649
615	req_send (req);	650	LOCK (reqlock);
		651	reqq_push (&req_queue, req);
		652	COND_SIGNAL (reqwait);
		653	UNLOCK (reqlock);
616		654
617	LOCK (wrklock);	655	LOCK (wrklock);
618	--started;	656	--started;
619	UNLOCK (wrklock);	657	UNLOCK (wrklock);
620	}	658	}
621		659
		660	static void set_max_idle (int nthreads)
		661	{
		662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		663	max_idle = nthreads <= 0 ? 1 : nthreads;
		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		665	}
		666
622	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
623	{	668	{
624	if (wanted < nthreads)	669	if (wanted < nthreads)
625	wanted = nthreads;	670	wanted = nthreads;
626	}	671	}
…		…
639	fd_set rfd;	684	fd_set rfd;
640		685
641	while (nreqs)	686	while (nreqs)
642	{	687	{
643	int size;	688	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	689	if (WORDACCESS_UNSAFE) LOCK (reslock);
645	size = res_queue.size;	690	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
647		692
648	if (size)	693	if (size)
649	return;	694	return;
650		695
651	maybe_start_thread ();	696	maybe_start_thread ();
…		…
655		700
656	select (respipe [0] + 1, &rfd, 0, 0, 0);	701	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	702	}
658	}	703	}
659		704
660	static int poll_cb (int max)	705	static int poll_cb ()
661	{	706	{
662	dSP;	707	dSP;
663	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
664	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
665	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
666		718
667	for (;;)	719	for (;;)
668	{	720	{
669	while (max <= 0 || count < max)	721	for (;;)
670	{	722	{
671	maybe_start_thread ();	723	maybe_start_thread ();
672		724
673	LOCK (reslock);	725	LOCK (reslock);
674	req = reqq_shift (&res_queue);	726	req = reqq_shift (&res_queue);
…		…
678	--npending;	730	--npending;
679		731
680	if (!res_queue.size)	732	if (!res_queue.size)
681	{	733	{
682	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
683	char buf [32];	735	char buf [4];
684	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
685	;	737	;
686	}	738	}
687	}	739	}
688		740
689	UNLOCK (reslock);	741	UNLOCK (reslock);
…		…
691	if (!req)	743	if (!req)
692	break;	744	break;
693		745
694	--nreqs;	746	--nreqs;
695		747
696	if (req->type == REQ_GROUP && req->length)	748	if (req->type == REQ_GROUP && req->size)
697	{	749	{
698	req->fd = 1; /* mark request as delayed */	750	req->int1 = 1; /* mark request as delayed */
699	continue;	751	continue;
700	}	752	}
701	else	753	else
702	{	754	{
703	if (req->type == REQ_READ)	755	if (!req_invoke (req))
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{	756	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	757	req_destroy (req);
712	PL_laststatval = req->result;	758	unblock_sig ();
713	PL_statcache = *(req->statdata);	759	croak (0);
714	}	760	}
715
716	req_invoke (req);
717		761
718	count++;	762	count++;
719	}	763	}
720		764
721	req_free (req);	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	}
722	}	777	}
723		778
724	if (nreqs <= max_outstanding)	779	if (nreqs <= max_outstanding)
725	break;	780	break;
726		781
727	poll_wait ();	782	poll_wait ();
728		783
729	max = 0;	784	++maxreqs;
730	}	785	}
731		786
		787	unblock_sig ();
732	return count;	788	return count;
733	}	789	}
734		790
735	static void create_pipe ()	791	static void create_pipe ()
736	{	792	{
…		…
754	/*	810	/*
755	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
756	* 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,
757	* but that's your problem, not mine.	813	* but that's your problem, not mine.
758	*/	814	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
760		816
761	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)
762	{	818	{
763	ssize_t res;	819	ssize_t res;
764	off_t ooffset;	820	off_t ooffset;
…		…
787		843
788	return res;	844	return res;
789	}	845	}
790	#endif	846	#endif
791		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
792	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
793	# define fdatasync fsync	877	# define fdatasync fsync
794	#endif	878	#endif
795		879
796	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
…		…
815	#endif	899	#endif
816		900
817	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
819		903
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
821		905
822	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)
823	{	907	{
824	struct dirent *e;	908	struct dirent *e;
825	int errorno;	909	int errorno;
…		…
952	int memofs = 0;	1036	int memofs = 0;
953	int res = 0;	1037	int res = 0;
954	int errorno;	1038	int errorno;
955		1039
956	LOCK (wrklock);	1040	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);	1041	self->dirp = dirp = opendir (req->ptr1);
958	self->dbuf = u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
959	req->data2ptr = names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
960	UNLOCK (wrklock);	1045	UNLOCK (wrklock);
961		1046
962	if (dirp && u && names)	1047	if (dirp && u && names)
963	for (;;)	1048	for (;;)
964	{	1049	{
…		…
978		1063
979	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
980	{	1065	{
981	memlen *= 2;	1066	memlen *= 2;
982	LOCK (wrklock);	1067	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
984	UNLOCK (wrklock);	1069	UNLOCK (wrklock);
985		1070
986	if (!names)	1071	if (!names)
987	break;	1072	break;
988	}	1073	}
…		…
1001	/*****************************************************************************/	1086	/*****************************************************************************/
1002		1087
1003	static void *aio_proc (void *thr_arg)	1088	static void *aio_proc (void *thr_arg)
1004	{	1089	{
1005	aio_req req;	1090	aio_req req;
		1091	struct timespec ts;
1006	worker *self = (worker *)thr_arg;	1092	worker *self = (worker *)thr_arg;
		1093
		1094	/* try to distribute timeouts somewhat evenly */
		1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1096	* (1000000000UL / 1024UL);
1007		1097
1008	for (;;)	1098	for (;;)
1009	{	1099	{
		1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1101
1010	LOCK (reqlock);	1102	LOCK (reqlock);
1011		1103
1012	for (;;)	1104	for (;;)
1013	{	1105	{
1014	self->req = req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
1015		1107
1016	if (req)	1108	if (req)
1017	break;	1109	break;
1018		1110
1019	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;
1020	}	1132	}
1021		1133
1022	--nready;	1134	--nready;
1023		1135
1024	UNLOCK (reqlock);	1136	UNLOCK (reqlock);
…		…
1026	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
1027		1139
1028	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)	1141	switch (req->type)
1030	{	1142	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
1032	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;
1033		1149
1034	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;
1035	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;
1036		1152
1037	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;
1038	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;
1039	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;
1040		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
1041	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;
1042	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1044	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;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); 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;
1049		1172
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1052	case REQ_READDIR: scandir_ (req, self); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
1053		1176
1054	case REQ_BUSY:	1177	case REQ_BUSY:
1055	{	1178	{
1056	struct timeval tv;	1179	struct timeval tv;
1057		1180
1058	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
1059	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1060		1183
1061	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
		1185	}
		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);
1062	}	1209	}
1063		1210
1064	case REQ_GROUP:	1211	case REQ_GROUP:
1065	case REQ_NOP:	1212	case REQ_NOP:
1066	break;	1213	break;
1067		1214
1068	case REQ_QUIT:	1215	case REQ_QUIT:
1069	LOCK (wrklock);	1216	goto quit;
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074		1217
1075	default:	1218	default:
1076	req->result = ENOSYS;	1219	req->result = -1;
1077	break;	1220	break;
1078	}	1221	}
1079		1222
1080	req->errorno = errno;	1223	req->errorno = errno;
1081		1224
1082	LOCK (reslock);	1225	LOCK (reslock);
1083		1226
1084	++npending;	1227	++npending;
1085		1228
1086	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
1087	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
1088	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	}
1089		1238
1090	self->req = 0;	1239	self->req = 0;
1091	worker_clear (self);	1240	worker_clear (self);
1092		1241
1093	UNLOCK (reslock);	1242	UNLOCK (reslock);
1094	}	1243	}
		1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
		1249
		1250	return 0;
1095	}	1251	}
1096		1252
1097	/*****************************************************************************/	1253	/*****************************************************************************/
1098		1254
1099	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
…		…
1125	static void atfork_child (void)	1281	static void atfork_child (void)
1126	{	1282	{
1127	aio_req prv;	1283	aio_req prv;
1128		1284
1129	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);	1286	req_destroy (prv);
1131		1287
1132	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);	1289	req_destroy (prv);
1134		1290
1135	while (wrk_first.next != &wrk_first)	1291	while (wrk_first.next != &wrk_first)
1136	{	1292	{
1137	worker *wrk = wrk_first.next;	1293	worker *wrk = wrk_first.next;
1138		1294
1139	if (wrk->req)	1295	if (wrk->req)
1140	req_free (wrk->req);	1296	req_destroy (wrk->req);
1141		1297
1142	worker_clear (wrk);	1298	worker_clear (wrk);
1143	worker_free (wrk);	1299	worker_free (wrk);
1144	}	1300	}
1145		1301
1146	started = 0;	1302	started = 0;
		1303	idle = 0;
1147	nreqs = 0;	1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
1148		1307
1149	close (respipe [0]);	1308	close (respipe [0]);
1150	close (respipe [1]);	1309	close (respipe [1]);
1151	create_pipe ();	1310	create_pipe ();
1152		1311
…		…
1179	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1180		1339
1181	BOOT:	1340	BOOT:
1182	{	1341	{
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1187	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1189		1351
1190	create_pipe ();	1352	create_pipe ();
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1192
1193	start_thread ();
1194	}	1354	}
		1355
		1356	void
		1357	max_poll_reqs (int nreqs)
		1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
		1361
		1362	void
		1363	max_poll_time (double nseconds)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
1195		1367
1196	void	1368	void
1197	min_parallel (int nthreads)	1369	min_parallel (int nthreads)
1198	PROTOTYPE: $	1370	PROTOTYPE: $
1199		1371
1200	void	1372	void
1201	max_parallel (int nthreads)	1373	max_parallel (int nthreads)
1202	PROTOTYPE: $	1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
1203		1381
1204	int	1382	int
1205	max_outstanding (int maxreqs)	1383	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	1384	PROTOTYPE: $
1207	CODE:	1385	CODE:
…		…
1209	max_outstanding = maxreqs;	1387	max_outstanding = maxreqs;
1210	OUTPUT:	1388	OUTPUT:
1211	RETVAL	1389	RETVAL
1212		1390
1213	void	1391	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1215	SV * pathname
1216	int flags
1217	int mode
1218	SV * callback
1219	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1220	PPCODE:	1394	PPCODE:
1221	{	1395	{
1222	dREQ;	1396	dREQ;
1223		1397
1224	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1225	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227	req->fd = flags;	1401	req->int1 = flags;
1228	req->mode = mode;	1402	req->mode = mode;
1229		1403
1230	REQ_SEND;	1404	REQ_SEND;
1231	}	1405	}
1232		1406
1233	void	1407	void
1234	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1238	ALIAS:	1410	ALIAS:
1239	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1242	PPCODE:	1414	PPCODE:
1243	{	1415	{
1244	dREQ;	1416	dREQ;
1245		1417
1246	req->type = ix;	1418	req->type = ix;
1247	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1249		1421
1250	REQ_SEND (req);	1422	REQ_SEND (req);
1251	}	1423	}
1252		1424
1253	void	1425	void
1254	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)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	1427	ALIAS:
1262	aio_read = REQ_READ	1428	aio_read = REQ_READ
1263	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1264	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1265	PPCODE:	1431	PPCODE:
1266	{	1432	{
1267	aio_req req;
1268	STRLEN svlen;	1433	STRLEN svlen;
1269	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
1270		1435
1271	SvUPGRADE (data, SVt_PV);	1436	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);	1437	SvPOK_on (data);
…		…
1284	length = svlen - dataoffset;	1449	length = svlen - dataoffset;
1285	}	1450	}
1286	else	1451	else
1287	{	1452	{
1288	/* read: grow scalar as necessary */	1453	/* read: grow scalar as necessary */
1289	svptr = SvGROW (data, length + dataoffset);	1454	svptr = SvGROW (data, length + dataoffset + 1);
1290	}	1455	}
1291		1456
1292	if (length < 0)	1457	if (length < 0)
1293	croak ("length must not be negative");	1458	croak ("length must not be negative");
1294		1459
1295	{	1460	{
1296	dREQ;	1461	dREQ;
1297		1462
1298	req->type = ix;	1463	req->type = ix;
1299	req->fh = newSVsv (fh);	1464	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1301	: IoOFP (sv_2io (fh)));	1466	: IoOFP (sv_2io (fh)));
1302	req->offset = offset;	1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1303	req->length = length;	1468	req->size = length;
1304	req->data = SvREFCNT_inc (data);	1469	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	1470	req->ptr1 = (char *)svptr + dataoffset;
		1471	req->stroffset = dataoffset;
1306		1472
1307	if (!SvREADONLY (data))	1473	if (!SvREADONLY (data))
1308	{	1474	{
1309	SvREADONLY_on (data);	1475	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	1476	req->flags |= FLAG_SV2_RO_OFF;
1311	}	1477	}
1312		1478
1313	REQ_SEND;	1479	REQ_SEND;
1314	}	1480	}
1315	}	1481	}
1316		1482
1317	void	1483	void
		1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1485	PROTOTYPE: $$;$
		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
1318	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)
1319	SV * out_fh
1320	SV * in_fh
1321	UV in_offset
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$	1505	PROTOTYPE: $$$$;$
1325	PPCODE:	1506	PPCODE:
1326	{	1507	{
1327	dREQ;	1508	dREQ;
1328		1509
1329	req->type = REQ_SENDFILE;	1510	req->type = REQ_SENDFILE;
1330	req->fh = newSVsv (out_fh);	1511	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1332	req->fh2 = newSVsv (in_fh);	1513	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1334	req->offset = in_offset;	1515	req->offs = SvVAL64 (in_offset);
1335	req->length = length;	1516	req->size = length;
1336		1517
1337	REQ_SEND;	1518	REQ_SEND;
1338	}	1519	}
1339		1520
1340	void	1521	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$	1523	PROTOTYPE: $$$;$
1347	PPCODE:	1524	PPCODE:
1348	{	1525	{
1349	dREQ;	1526	dREQ;
1350		1527
1351	req->type = REQ_READAHEAD;	1528	req->type = REQ_READAHEAD;
1352	req->fh = newSVsv (fh);	1529	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1354	req->offset = offset;	1531	req->offs = SvVAL64 (offset);
1355	req->length = length;	1532	req->size = length;
1356		1533
1357	REQ_SEND;	1534	REQ_SEND;
1358	}	1535	}
1359		1536
1360	void	1537	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	1539	ALIAS:
1365	aio_stat = REQ_STAT	1540	aio_stat = REQ_STAT
1366	aio_lstat = REQ_LSTAT	1541	aio_lstat = REQ_LSTAT
1367	PPCODE:	1542	PPCODE:
1368	{	1543	{
1369	dREQ;	1544	dREQ;
1370		1545
1371	New (0, req->statdata, 1, Stat_t);	1546	req->ptr2 = malloc (sizeof (Stat_t));
1372	if (!req->statdata)	1547	if (!req->ptr2)
1373	{	1548	{
1374	req_free (req);	1549	req_destroy (req);
1375	croak ("out of memory during aio_req->statdata allocation");	1550	croak ("out of memory during aio_stat statdata allocation");
1376	}	1551	}
		1552
		1553	req->flags |= FLAG_PTR2_FREE;
		1554	req->sv1 = newSVsv (fh_or_path);
1377		1555
1378	if (SvPOK (fh_or_path))	1556	if (SvPOK (fh_or_path))
1379	{	1557	{
1380	req->type = ix;	1558	req->type = ix;
1381	req->data = newSVsv (fh_or_path);
1382	req->dataptr = SvPVbyte_nolen (req->data);	1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1383	}	1560	}
1384	else	1561	else
1385	{	1562	{
1386	req->type = REQ_FSTAT;	1563	req->type = REQ_FSTAT;
1387	req->fh = newSVsv (fh_or_path);
1388	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1389	}	1565	}
1390		1566
1391	REQ_SEND;	1567	REQ_SEND;
1392	}	1568	}
1393		1569
1394	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
1395	aio_unlink (pathname,callback=&PL_sv_undef)	1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	1643	ALIAS:
1399	aio_unlink = REQ_UNLINK	1644	aio_unlink = REQ_UNLINK
1400	aio_rmdir = REQ_RMDIR	1645	aio_rmdir = REQ_RMDIR
1401	aio_readdir = REQ_READDIR	1646	aio_readdir = REQ_READDIR
1402	PPCODE:	1647	PPCODE:
1403	{	1648	{
1404	dREQ;	1649	dREQ;
1405		1650
1406	req->type = ix;	1651	req->type = ix;
1407	req->data = newSVsv (pathname);	1652	req->sv1 = newSVsv (pathname);
1408	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;
1409		1663
		1664	req->type = REQ_MKDIR;
		1665	req->sv1 = newSVsv (pathname);
		1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1667	req->mode = mode;
		1668
1410	REQ_SEND;	1669	REQ_SEND;
1411	}	1670	}
1412		1671
1413	void	1672	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1415	SV * oldpath
1416	SV * newpath
1417	SV * callback
1418	ALIAS:	1674	ALIAS:
1419	aio_link = REQ_LINK	1675	aio_link = REQ_LINK
1420	aio_symlink = REQ_SYMLINK	1676	aio_symlink = REQ_SYMLINK
1421	aio_rename = REQ_RENAME	1677	aio_rename = REQ_RENAME
1422	PPCODE:	1678	PPCODE:
1423	{	1679	{
1424	dREQ;	1680	dREQ;
1425		1681
1426	req->type = ix;	1682	req->type = ix;
1427	req->fh = newSVsv (oldpath);	1683	req->sv2 = newSVsv (oldpath);
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	1684	req->ptr2 = SvPVbyte_nolen (req->sv2);
1429	req->data = newSVsv (newpath);	1685	req->sv1 = newSVsv (newpath);
1430	req->dataptr = SvPVbyte_nolen (req->data);	1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1431		1687
1432	REQ_SEND;	1688	REQ_SEND;
1433	}	1689	}
1434		1690
1435	void	1691	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1437	SV * pathname
1438	SV * callback
1439	UV mode
1440	UV dev
1441	PPCODE:	1693	PPCODE:
1442	{	1694	{
1443	dREQ;	1695	dREQ;
1444		1696
1445	req->type = REQ_MKNOD;	1697	req->type = REQ_MKNOD;
1446	req->data = newSVsv (pathname);	1698	req->sv1 = newSVsv (pathname);
1447	req->dataptr = SvPVbyte_nolen (req->data);	1699	req->ptr1 = SvPVbyte_nolen (req->sv1);
1448	req->mode = (mode_t)mode;	1700	req->mode = (mode_t)mode;
1449	req->offset = dev;	1701	req->offs = dev;
1450		1702
1451	REQ_SEND;	1703	REQ_SEND;
1452	}	1704	}
1453		1705
1454	void	1706	void
1455	aio_busy (delay,callback=&PL_sv_undef)	1707	aio_busy (double delay, SV *callback=&PL_sv_undef)
1456	double delay
1457	SV * callback
1458	PPCODE:	1708	PPCODE:
1459	{	1709	{
1460	dREQ;	1710	dREQ;
1461		1711
1462	req->type = REQ_BUSY;	1712	req->type = REQ_BUSY;
1463	req->fd = delay < 0. ? 0 : delay;	1713	req->nv1 = delay < 0. ? 0. : delay;
1464	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465		1714
1466	REQ_SEND;	1715	REQ_SEND;
1467	}	1716	}
1468		1717
1469	void	1718	void
1470	aio_group (callback=&PL_sv_undef)	1719	aio_group (SV *callback=&PL_sv_undef)
1471	SV * callback
1472	PROTOTYPE: ;$	1720	PROTOTYPE: ;$
1473	PPCODE:	1721	PPCODE:
1474	{	1722	{
1475	dREQ;	1723	dREQ;
1476		1724
1477	req->type = REQ_GROUP;	1725	req->type = REQ_GROUP;
		1726
1478	req_send (req);	1727	req_send (req);
1479
1480	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1481	}	1729	}
1482		1730
1483	void	1731	void
1484	aio_nop (callback=&PL_sv_undef)	1732	aio_nop (SV *callback=&PL_sv_undef)
1485	SV * callback
1486	PPCODE:	1733	PPCODE:
1487	{	1734	{
1488	dREQ;	1735	dREQ;
1489		1736
1490	req->type = REQ_NOP;	1737	req->type = REQ_NOP;
…		…
1519	PROTOTYPE:	1766	PROTOTYPE:
1520	CODE:	1767	CODE:
1521	while (nreqs)	1768	while (nreqs)
1522	{	1769	{
1523	poll_wait ();	1770	poll_wait ();
1524	poll_cb (0);	1771	poll_cb ();
1525	}	1772	}
1526		1773
1527	void	1774	int
1528	poll()	1775	poll()
1529	PROTOTYPE:	1776	PROTOTYPE:
1530	CODE:	1777	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();	1778	poll_wait ();
1534	poll_cb (0);	1779	RETVAL = poll_cb ();
1535	}	1780	OUTPUT:
		1781	RETVAL
1536		1782
1537	int	1783	int
1538	poll_fileno()	1784	poll_fileno()
1539	PROTOTYPE:	1785	PROTOTYPE:
1540	CODE:	1786	CODE:
…		…
1544		1790
1545	int	1791	int
1546	poll_cb(...)	1792	poll_cb(...)
1547	PROTOTYPE:	1793	PROTOTYPE:
1548	CODE:	1794	CODE:
1549	RETVAL = poll_cb (0);	1795	RETVAL = poll_cb ();
1550	OUTPUT:
1551	RETVAL
1552
1553	int
1554	poll_some(int max = 0)
1555	PROTOTYPE: $
1556	CODE:
1557	RETVAL = poll_cb (max);
1558	OUTPUT:	1796	OUTPUT:
1559	RETVAL	1797	RETVAL
1560		1798
1561	void	1799	void
1562	poll_wait()	1800	poll_wait()
1563	PROTOTYPE:	1801	PROTOTYPE:
1564	CODE:	1802	CODE:
1565	if (nreqs)
1566	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	}
1567		1841
1568	int	1842	int
1569	nreqs()	1843	nreqs()
1570	PROTOTYPE:	1844	PROTOTYPE:
1571	CODE:	1845	CODE:
…		…
1587	CODE:	1861	CODE:
1588	RETVAL = get_npending ();	1862	RETVAL = get_npending ();
1589	OUTPUT:	1863	OUTPUT:
1590	RETVAL	1864	RETVAL
1591		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
1592	PROTOTYPES: DISABLE	1876	PROTOTYPES: DISABLE
1593		1877
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1879
1596	void	1880	void
…		…
1611	PPCODE:	1895	PPCODE:
1612	{	1896	{
1613	int i;	1897	int i;
1614	aio_req req;	1898	aio_req req;
1615		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
1616	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1617	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");
1618		1905
1619	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1620	{	1907	{
1621	if (GIMME_V != G_VOID)	1908	if (GIMME_V != G_VOID)
…		…
1623		1910
1624	req = SvAIO_REQ (ST (i));	1911	req = SvAIO_REQ (ST (i));
1625		1912
1626	if (req)	1913	if (req)
1627	{	1914	{
1628	++grp->length;	1915	++grp->size;
1629	req->grp = grp;	1916	req->grp = grp;
1630		1917
1631	req->grp_prev = 0;	1918	req->grp_prev = 0;
1632	req->grp_next = grp->grp_first;	1919	req->grp_next = grp->grp_first;
1633		1920
…		…
1656	av = newAV ();	1943	av = newAV ();
1657		1944
1658	for (i = 1; i < items; ++i )	1945	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1946	av_push (av, newSVsv (ST (i)));
1660		1947
1661	SvREFCNT_dec (grp->data);	1948	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1949	grp->sv1 = (SV *)av;
1663	}	1950	}
1664		1951
1665	void	1952	void
1666	errno (aio_req grp, int errorno = errno)	1953	errno (aio_req grp, int errorno = errno)
1667	CODE:	1954	CODE:
1668	grp->errorno = errorno;	1955	grp->errorno = errorno;
1669		1956
1670	void	1957	void
1671	limit (aio_req grp, int limit)	1958	limit (aio_req grp, int limit)
1672	CODE:	1959	CODE:
1673	grp->fd2 = limit;	1960	grp->int2 = limit;
1674	aio_grp_feed (grp);	1961	aio_grp_feed (grp);
1675		1962
1676	void	1963	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	1964	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	1965	CODE:
1679	{	1966	{
1680	SvREFCNT_dec (grp->fh2);	1967	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	1968	grp->sv2 = newSVsv (callback);
1682		1969
1683	if (grp->fd2 <= 0)	1970	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	1971	grp->int2 = 2;
1685		1972
1686	aio_grp_feed (grp);	1973	aio_grp_feed (grp);
1687	}	1974	}
1688		1975

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