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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC vs.
Revision 1.102 by root, Sun Jun 3 09:44:17 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)
…		…
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	LOCK (reqlock);	650	LOCK (reqlock);
616	reqq_push (&req_queue, req);	651	reqq_push (&req_queue, req);
617	pthread_cond_signal (&reqwait);	652	COND_SIGNAL (reqwait);
618	UNLOCK (reqlock);	653	UNLOCK (reqlock);
619		654
620	LOCK (wrklock);	655	LOCK (wrklock);
621	--started;	656	--started;
622	UNLOCK (wrklock);	657	UNLOCK (wrklock);
623	}	658	}
624		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
625	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
626	{	668	{
627	if (wanted < nthreads)	669	if (wanted < nthreads)
628	wanted = nthreads;	670	wanted = nthreads;
629	}	671	}
…		…
642	fd_set rfd;	684	fd_set rfd;
643		685
644	while (nreqs)	686	while (nreqs)
645	{	687	{
646	int size;	688	int size;
647	if (WORDREAD_UNSAFE) LOCK (reslock);	689	if (WORDACCESS_UNSAFE) LOCK (reslock);
648	size = res_queue.size;	690	size = res_queue.size;
649	if (WORDREAD_UNSAFE) UNLOCK (reslock);	691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
650		692
651	if (size)	693	if (size)
652	return;	694	return;
653		695
654	maybe_start_thread ();	696	maybe_start_thread ();
…		…
658		700
659	select (respipe [0] + 1, &rfd, 0, 0, 0);	701	select (respipe [0] + 1, &rfd, 0, 0, 0);
660	}	702	}
661	}	703	}
662		704
663	static int poll_cb (int max)	705	static int poll_cb ()
664	{	706	{
665	dSP;	707	dSP;
666	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
667	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
668	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
669		718
670	for (;;)	719	for (;;)
671	{	720	{
672	while (max <= 0 || count < max)	721	for (;;)
673	{	722	{
674	maybe_start_thread ();	723	maybe_start_thread ();
675		724
676	LOCK (reslock);	725	LOCK (reslock);
677	req = reqq_shift (&res_queue);	726	req = reqq_shift (&res_queue);
…		…
681	--npending;	730	--npending;
682		731
683	if (!res_queue.size)	732	if (!res_queue.size)
684	{	733	{
685	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
686	char buf [32];	735	char buf [4];
687	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
688	;	737	;
689	}	738	}
690	}	739	}
691		740
692	UNLOCK (reslock);	741	UNLOCK (reslock);
…		…
694	if (!req)	743	if (!req)
695	break;	744	break;
696		745
697	--nreqs;	746	--nreqs;
698		747
699	if (req->type == REQ_GROUP && req->length)	748	if (req->type == REQ_GROUP && req->size)
700	{	749	{
701	req->fd = 1; /* mark request as delayed */	750	req->int1 = 1; /* mark request as delayed */
702	continue;	751	continue;
703	}	752	}
704	else	753	else
705	{	754	{
706	if (req->type == REQ_READ)	755	if (!req_invoke (req))
707	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
708
709	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
710	SvREADONLY_off (req->data);
711
712	if (req->statdata)
713	{	756	{
714	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	757	req_destroy (req);
715	PL_laststatval = req->result;	758	unblock_sig ();
716	PL_statcache = *(req->statdata);	759	croak (0);
717	}	760	}
718
719	req_invoke (req);
720		761
721	count++;	762	count++;
722	}	763	}
723		764
724	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	}
725	}	777	}
726		778
727	if (nreqs <= max_outstanding)	779	if (nreqs <= max_outstanding)
728	break;	780	break;
729		781
730	poll_wait ();	782	poll_wait ();
731		783
732	max = 0;	784	++maxreqs;
733	}	785	}
734		786
		787	unblock_sig ();
735	return count;	788	return count;
736	}	789	}
737		790
738	static void create_pipe ()	791	static void create_pipe ()
739	{	792	{
…		…
757	/*	810	/*
758	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
759	* 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,
760	* but that's your problem, not mine.	813	* but that's your problem, not mine.
761	*/	814	*/
762	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
763		816
764	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)
765	{	818	{
766	ssize_t res;	819	ssize_t res;
767	off_t ooffset;	820	off_t ooffset;
…		…
790		843
791	return res;	844	return res;
792	}	845	}
793	#endif	846	#endif
794		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
795	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
796	# define fdatasync fsync	877	# define fdatasync fsync
797	#endif	878	#endif
798		879
799	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
…		…
818	#endif	899	#endif
819		900
820	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
821	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
822		903
823	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
824		905
825	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)
826	{	907	{
827	struct dirent *e;	908	struct dirent *e;
828	int errorno;	909	int errorno;
…		…
955	int memofs = 0;	1036	int memofs = 0;
956	int res = 0;	1037	int res = 0;
957	int errorno;	1038	int errorno;
958		1039
959	LOCK (wrklock);	1040	LOCK (wrklock);
960	self->dirp = dirp = opendir (req->dataptr);	1041	self->dirp = dirp = opendir (req->ptr1);
961	self->dbuf = u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
962	req->data2ptr = names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
963	UNLOCK (wrklock);	1045	UNLOCK (wrklock);
964		1046
965	if (dirp && u && names)	1047	if (dirp && u && names)
966	for (;;)	1048	for (;;)
967	{	1049	{
…		…
981		1063
982	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
983	{	1065	{
984	memlen *= 2;	1066	memlen *= 2;
985	LOCK (wrklock);	1067	LOCK (wrklock);
986	req->data2ptr = names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
987	UNLOCK (wrklock);	1069	UNLOCK (wrklock);
988		1070
989	if (!names)	1071	if (!names)
990	break;	1072	break;
991	}	1073	}
…		…
1004	/*****************************************************************************/	1086	/*****************************************************************************/
1005		1087
1006	static void *aio_proc (void *thr_arg)	1088	static void *aio_proc (void *thr_arg)
1007	{	1089	{
1008	aio_req req;	1090	aio_req req;
		1091	struct timespec ts;
1009	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);
1010		1097
1011	for (;;)	1098	for (;;)
1012	{	1099	{
		1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1101
1013	LOCK (reqlock);	1102	LOCK (reqlock);
1014		1103
1015	for (;;)	1104	for (;;)
1016	{	1105	{
1017	self->req = req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
1018		1107
1019	if (req)	1108	if (req)
1020	break;	1109	break;
1021		1110
1022	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;
1023	}	1132	}
1024		1133
1025	--nready;	1134	--nready;
1026		1135
1027	UNLOCK (reqlock);	1136	UNLOCK (reqlock);
…		…
1029	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
1030		1139
1031	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
1032	switch (req->type)	1141	switch (req->type)
1033	{	1142	{
1034	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
1035	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;
1036		1149
1037	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;
1038	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;
1039		1152
1040	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;
1041	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;
1042	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;
1043		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
1044	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;
1045	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
1046	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1047	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;
1048	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1049	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1050	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1051	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;
1052		1172
1053	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1054	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1055	case REQ_READDIR: scandir_ (req, self); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
1056		1176
1057	case REQ_BUSY:	1177	case REQ_BUSY:
1058	{	1178	{
1059	struct timeval tv;	1179	struct timeval tv;
1060		1180
1061	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
1062	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1063		1183
1064	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);
1065	}	1209	}
1066		1210
1067	case REQ_GROUP:	1211	case REQ_GROUP:
1068	case REQ_NOP:	1212	case REQ_NOP:
1069	break;	1213	break;
1070		1214
1071	case REQ_QUIT:	1215	case REQ_QUIT:
1072	LOCK (wrklock);	1216	goto quit;
1073	worker_free (self);
1074	--started;
1075	UNLOCK (wrklock);
1076	return 0;
1077		1217
1078	default:	1218	default:
1079	req->result = ENOSYS;	1219	req->result = -1;
1080	break;	1220	break;
1081	}	1221	}
1082		1222
1083	req->errorno = errno;	1223	req->errorno = errno;
1084		1224
1085	LOCK (reslock);	1225	LOCK (reslock);
1086		1226
1087	++npending;	1227	++npending;
1088		1228
1089	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
1090	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
1091	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	}
1092		1238
1093	self->req = 0;	1239	self->req = 0;
1094	worker_clear (self);	1240	worker_clear (self);
1095		1241
1096	UNLOCK (reslock);	1242	UNLOCK (reslock);
1097	}	1243	}
		1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
		1249
		1250	return 0;
1098	}	1251	}
1099		1252
1100	/*****************************************************************************/	1253	/*****************************************************************************/
1101		1254
1102	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
…		…
1128	static void atfork_child (void)	1281	static void atfork_child (void)
1129	{	1282	{
1130	aio_req prv;	1283	aio_req prv;
1131		1284
1132	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
1133	req_free (prv);	1286	req_destroy (prv);
1134		1287
1135	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
1136	req_free (prv);	1289	req_destroy (prv);
1137		1290
1138	while (wrk_first.next != &wrk_first)	1291	while (wrk_first.next != &wrk_first)
1139	{	1292	{
1140	worker *wrk = wrk_first.next;	1293	worker *wrk = wrk_first.next;
1141		1294
1142	if (wrk->req)	1295	if (wrk->req)
1143	req_free (wrk->req);	1296	req_destroy (wrk->req);
1144		1297
1145	worker_clear (wrk);	1298	worker_clear (wrk);
1146	worker_free (wrk);	1299	worker_free (wrk);
1147	}	1300	}
1148		1301
1149	started = 0;	1302	started = 0;
		1303	idle = 0;
1150	nreqs = 0;	1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
1151		1307
1152	close (respipe [0]);	1308	close (respipe [0]);
1153	close (respipe [1]);	1309	close (respipe [1]);
1154	create_pipe ();	1310	create_pipe ();
1155		1311
…		…
1189	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1190	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1191	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1192	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1193	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1194		1351
1195	create_pipe ();	1352	create_pipe ();
1196	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1197
1198	start_thread ();
1199	}	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;
1200		1367
1201	void	1368	void
1202	min_parallel (int nthreads)	1369	min_parallel (int nthreads)
1203	PROTOTYPE: $	1370	PROTOTYPE: $
1204		1371
1205	void	1372	void
1206	max_parallel (int nthreads)	1373	max_parallel (int nthreads)
1207	PROTOTYPE: $	1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
1208		1381
1209	int	1382	int
1210	max_outstanding (int maxreqs)	1383	max_outstanding (int maxreqs)
1211	PROTOTYPE: $	1384	PROTOTYPE: $
1212	CODE:	1385	CODE:
…		…
1214	max_outstanding = maxreqs;	1387	max_outstanding = maxreqs;
1215	OUTPUT:	1388	OUTPUT:
1216	RETVAL	1389	RETVAL
1217		1390
1218	void	1391	void
1219	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1220	SV * pathname
1221	int flags
1222	int mode
1223	SV * callback
1224	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1225	PPCODE:	1394	PPCODE:
1226	{	1395	{
1227	dREQ;	1396	dREQ;
1228		1397
1229	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1230	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1231	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1232	req->fd = flags;	1401	req->int1 = flags;
1233	req->mode = mode;	1402	req->mode = mode;
1234		1403
1235	REQ_SEND;	1404	REQ_SEND;
1236	}	1405	}
1237		1406
1238	void	1407	void
1239	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1240	SV * fh
1241	SV * callback
1242	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1243	ALIAS:	1410	ALIAS:
1244	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1245	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1246	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1247	PPCODE:	1414	PPCODE:
1248	{	1415	{
1249	dREQ;	1416	dREQ;
1250		1417
1251	req->type = ix;	1418	req->type = ix;
1252	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1253	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1254		1421
1255	REQ_SEND (req);	1422	REQ_SEND (req);
1256	}	1423	}
1257		1424
1258	void	1425	void
1259	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1260	SV * fh
1261	UV offset
1262	UV length
1263	SV * data
1264	UV dataoffset
1265	SV * callback
1266	ALIAS:	1427	ALIAS:
1267	aio_read = REQ_READ	1428	aio_read = REQ_READ
1268	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1269	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1270	PPCODE:	1431	PPCODE:
1271	{	1432	{
1272	aio_req req;
1273	STRLEN svlen;	1433	STRLEN svlen;
1274	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
		1435	UV len = SvUV (length);
1275		1436
1276	SvUPGRADE (data, SVt_PV);	1437	SvUPGRADE (data, SVt_PV);
1277	SvPOK_on (data);	1438	SvPOK_on (data);
1278		1439
1279	if (dataoffset < 0)	1440	if (dataoffset < 0)
1280	dataoffset += svlen;	1441	dataoffset += svlen;
1281		1442
1282	if (dataoffset < 0 || dataoffset > svlen)	1443	if (dataoffset < 0 || dataoffset > svlen)
1283	croak ("data offset outside of string");	1444	croak ("dataoffset outside of data scalar");
1284		1445
1285	if (ix == REQ_WRITE)	1446	if (ix == REQ_WRITE)
1286	{	1447	{
1287	/* write: check length and adjust. */	1448	/* write: check length and adjust. */
1288	if (length < 0 || length + dataoffset > svlen)	1449	if (!SvOK (length) || len + dataoffset > svlen)
1289	length = svlen - dataoffset;	1450	len = svlen - dataoffset;
1290	}	1451	}
1291	else	1452	else
1292	{	1453	{
1293	/* read: grow scalar as necessary */	1454	/* read: grow scalar as necessary */
1294	svptr = SvGROW (data, length + dataoffset);	1455	svptr = SvGROW (data, len + dataoffset + 1);
1295	}	1456	}
1296		1457
1297	if (length < 0)	1458	if (len < 0)
1298	croak ("length must not be negative");	1459	croak ("length must not be negative");
1299		1460
1300	{	1461	{
1301	dREQ;	1462	dREQ;
1302		1463
1303	req->type = ix;	1464	req->type = ix;
1304	req->fh = newSVsv (fh);	1465	req->sv1 = newSVsv (fh);
1305	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1306	: IoOFP (sv_2io (fh)));	1467	: IoOFP (sv_2io (fh)));
		1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1307	req->offset = offset;	1469	req->size = len;
1308	req->length = length;
1309	req->data = SvREFCNT_inc (data);	1470	req->sv2 = SvREFCNT_inc (data);
1310	req->dataptr = (char *)svptr + dataoffset;	1471	req->ptr1 = (char *)svptr + dataoffset;
		1472	req->stroffset = dataoffset;
1311		1473
1312	if (!SvREADONLY (data))	1474	if (!SvREADONLY (data))
1313	{	1475	{
1314	SvREADONLY_on (data);	1476	SvREADONLY_on (data);
1315	req->data2ptr = (void *)data;	1477	req->flags |= FLAG_SV2_RO_OFF;
1316	}	1478	}
1317		1479
1318	REQ_SEND;	1480	REQ_SEND;
1319	}	1481	}
1320	}	1482	}
1321		1483
1322	void	1484	void
		1485	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1486	PROTOTYPE: $$;$
		1487	PPCODE:
		1488	{
		1489	SV *data;
		1490	dREQ;
		1491
		1492	data = newSV (NAME_MAX);
		1493	SvPOK_on (data);
		1494
		1495	req->type = REQ_READLINK;
		1496	req->sv1 = newSVsv (path);
		1497	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1498	req->sv2 = data;
		1499	req->ptr1 = SvPVbyte_nolen (data);
		1500
		1501	REQ_SEND;
		1502	}
		1503
		1504	void
1323	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1324	SV * out_fh
1325	SV * in_fh
1326	UV in_offset
1327	UV length
1328	SV * callback
1329	PROTOTYPE: $$$$;$	1506	PROTOTYPE: $$$$;$
1330	PPCODE:	1507	PPCODE:
1331	{	1508	{
1332	dREQ;	1509	dREQ;
1333		1510
1334	req->type = REQ_SENDFILE;	1511	req->type = REQ_SENDFILE;
1335	req->fh = newSVsv (out_fh);	1512	req->sv1 = newSVsv (out_fh);
1336	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1337	req->fh2 = newSVsv (in_fh);	1514	req->sv2 = newSVsv (in_fh);
1338	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1339	req->offset = in_offset;	1516	req->offs = SvVAL64 (in_offset);
1340	req->length = length;	1517	req->size = length;
1341		1518
1342	REQ_SEND;	1519	REQ_SEND;
1343	}	1520	}
1344		1521
1345	void	1522	void
1346	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1347	SV * fh
1348	UV offset
1349	IV length
1350	SV * callback
1351	PROTOTYPE: $$$;$	1524	PROTOTYPE: $$$;$
1352	PPCODE:	1525	PPCODE:
1353	{	1526	{
1354	dREQ;	1527	dREQ;
1355		1528
1356	req->type = REQ_READAHEAD;	1529	req->type = REQ_READAHEAD;
1357	req->fh = newSVsv (fh);	1530	req->sv1 = newSVsv (fh);
1358	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1359	req->offset = offset;	1532	req->offs = SvVAL64 (offset);
1360	req->length = length;	1533	req->size = length;
1361		1534
1362	REQ_SEND;	1535	REQ_SEND;
1363	}	1536	}
1364		1537
1365	void	1538	void
1366	aio_stat (fh_or_path,callback=&PL_sv_undef)	1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1367	SV * fh_or_path
1368	SV * callback
1369	ALIAS:	1540	ALIAS:
1370	aio_stat = REQ_STAT	1541	aio_stat = REQ_STAT
1371	aio_lstat = REQ_LSTAT	1542	aio_lstat = REQ_LSTAT
1372	PPCODE:	1543	PPCODE:
1373	{	1544	{
1374	dREQ;	1545	dREQ;
1375		1546
1376	New (0, req->statdata, 1, Stat_t);	1547	req->ptr2 = malloc (sizeof (Stat_t));
1377	if (!req->statdata)	1548	if (!req->ptr2)
1378	{	1549	{
1379	req_free (req);	1550	req_destroy (req);
1380	croak ("out of memory during aio_req->statdata allocation");	1551	croak ("out of memory during aio_stat statdata allocation");
1381	}	1552	}
		1553
		1554	req->flags |= FLAG_PTR2_FREE;
		1555	req->sv1 = newSVsv (fh_or_path);
1382		1556
1383	if (SvPOK (fh_or_path))	1557	if (SvPOK (fh_or_path))
1384	{	1558	{
1385	req->type = ix;	1559	req->type = ix;
1386	req->data = newSVsv (fh_or_path);
1387	req->dataptr = SvPVbyte_nolen (req->data);	1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1388	}	1561	}
1389	else	1562	else
1390	{	1563	{
1391	req->type = REQ_FSTAT;	1564	req->type = REQ_FSTAT;
1392	req->fh = newSVsv (fh_or_path);
1393	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1394	}	1566	}
1395		1567
1396	REQ_SEND;	1568	REQ_SEND;
1397	}	1569	}
1398		1570
1399	void	1571	void
		1572	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1579	req->sv1 = newSVsv (fh_or_path);
		1580
		1581	if (SvPOK (fh_or_path))
		1582	{
		1583	req->type = REQ_UTIME;
		1584	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1585	}
		1586	else
		1587	{
		1588	req->type = REQ_FUTIME;
		1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1590	}
		1591
		1592	REQ_SEND;
		1593	}
		1594
		1595	void
		1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1597	PPCODE:
		1598	{
		1599	dREQ;
		1600
		1601	req->mode = mode;
		1602	req->sv1 = newSVsv (fh_or_path);
		1603
		1604	if (SvPOK (fh_or_path))
		1605	{
		1606	req->type = REQ_CHMOD;
		1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1608	}
		1609	else
		1610	{
		1611	req->type = REQ_FCHMOD;
		1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1613	}
		1614
		1615	REQ_SEND;
		1616	}
		1617
		1618	void
		1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1626	req->sv1 = newSVsv (fh_or_path);
		1627
		1628	if (SvPOK (fh_or_path))
		1629	{
		1630	req->type = REQ_CHOWN;
		1631	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1632	}
		1633	else
		1634	{
		1635	req->type = REQ_FCHOWN;
		1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1637	}
		1638
		1639	REQ_SEND;
		1640	}
		1641
		1642	void
1400	aio_unlink (pathname,callback=&PL_sv_undef)	1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1401	SV * pathname
1402	SV * callback
1403	ALIAS:	1644	ALIAS:
1404	aio_unlink = REQ_UNLINK	1645	aio_unlink = REQ_UNLINK
1405	aio_rmdir = REQ_RMDIR	1646	aio_rmdir = REQ_RMDIR
1406	aio_readdir = REQ_READDIR	1647	aio_readdir = REQ_READDIR
1407	PPCODE:	1648	PPCODE:
1408	{	1649	{
1409	dREQ;	1650	dREQ;
1410		1651
1411	req->type = ix;	1652	req->type = ix;
1412	req->data = newSVsv (pathname);	1653	req->sv1 = newSVsv (pathname);
1413	req->dataptr = SvPVbyte_nolen (req->data);	1654	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
		1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1661	PPCODE:
		1662	{
		1663	dREQ;
1414		1664
		1665	req->type = REQ_MKDIR;
		1666	req->sv1 = newSVsv (pathname);
		1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1668	req->mode = mode;
		1669
1415	REQ_SEND;	1670	REQ_SEND;
1416	}	1671	}
1417		1672
1418	void	1673	void
1419	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1420	SV * oldpath
1421	SV * newpath
1422	SV * callback
1423	ALIAS:	1675	ALIAS:
1424	aio_link = REQ_LINK	1676	aio_link = REQ_LINK
1425	aio_symlink = REQ_SYMLINK	1677	aio_symlink = REQ_SYMLINK
1426	aio_rename = REQ_RENAME	1678	aio_rename = REQ_RENAME
1427	PPCODE:	1679	PPCODE:
1428	{	1680	{
1429	dREQ;	1681	dREQ;
1430		1682
1431	req->type = ix;	1683	req->type = ix;
1432	req->fh = newSVsv (oldpath);	1684	req->sv2 = newSVsv (oldpath);
1433	req->data2ptr = SvPVbyte_nolen (req->fh);	1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1434	req->data = newSVsv (newpath);	1686	req->sv1 = newSVsv (newpath);
1435	req->dataptr = SvPVbyte_nolen (req->data);	1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1436		1688
1437	REQ_SEND;	1689	REQ_SEND;
1438	}	1690	}
1439		1691
1440	void	1692	void
1441	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1442	SV * pathname
1443	SV * callback
1444	UV mode
1445	UV dev
1446	PPCODE:	1694	PPCODE:
1447	{	1695	{
1448	dREQ;	1696	dREQ;
1449		1697
1450	req->type = REQ_MKNOD;	1698	req->type = REQ_MKNOD;
1451	req->data = newSVsv (pathname);	1699	req->sv1 = newSVsv (pathname);
1452	req->dataptr = SvPVbyte_nolen (req->data);	1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1453	req->mode = (mode_t)mode;	1701	req->mode = (mode_t)mode;
1454	req->offset = dev;	1702	req->offs = dev;
1455		1703
1456	REQ_SEND;	1704	REQ_SEND;
1457	}	1705	}
1458		1706
1459	void	1707	void
1460	aio_busy (delay,callback=&PL_sv_undef)	1708	aio_busy (double delay, SV *callback=&PL_sv_undef)
1461	double delay
1462	SV * callback
1463	PPCODE:	1709	PPCODE:
1464	{	1710	{
1465	dREQ;	1711	dREQ;
1466		1712
1467	req->type = REQ_BUSY;	1713	req->type = REQ_BUSY;
1468	req->fd = delay < 0. ? 0 : delay;	1714	req->nv1 = delay < 0. ? 0. : delay;
1469	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1470		1715
1471	REQ_SEND;	1716	REQ_SEND;
1472	}	1717	}
1473		1718
1474	void	1719	void
1475	aio_group (callback=&PL_sv_undef)	1720	aio_group (SV *callback=&PL_sv_undef)
1476	SV * callback
1477	PROTOTYPE: ;$	1721	PROTOTYPE: ;$
1478	PPCODE:	1722	PPCODE:
1479	{	1723	{
1480	dREQ;	1724	dREQ;
1481		1725
1482	req->type = REQ_GROUP;	1726	req->type = REQ_GROUP;
		1727
1483	req_send (req);	1728	req_send (req);
1484
1485	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1486	}	1730	}
1487		1731
1488	void	1732	void
1489	aio_nop (callback=&PL_sv_undef)	1733	aio_nop (SV *callback=&PL_sv_undef)
1490	SV * callback
1491	PPCODE:	1734	PPCODE:
1492	{	1735	{
1493	dREQ;	1736	dREQ;
1494		1737
1495	req->type = REQ_NOP;	1738	req->type = REQ_NOP;
…		…
1524	PROTOTYPE:	1767	PROTOTYPE:
1525	CODE:	1768	CODE:
1526	while (nreqs)	1769	while (nreqs)
1527	{	1770	{
1528	poll_wait ();	1771	poll_wait ();
1529	poll_cb (0);	1772	poll_cb ();
1530	}	1773	}
1531		1774
1532	void	1775	int
1533	poll()	1776	poll()
1534	PROTOTYPE:	1777	PROTOTYPE:
1535	CODE:	1778	CODE:
1536	if (nreqs)
1537	{
1538	poll_wait ();	1779	poll_wait ();
1539	poll_cb (0);	1780	RETVAL = poll_cb ();
1540	}	1781	OUTPUT:
		1782	RETVAL
1541		1783
1542	int	1784	int
1543	poll_fileno()	1785	poll_fileno()
1544	PROTOTYPE:	1786	PROTOTYPE:
1545	CODE:	1787	CODE:
…		…
1549		1791
1550	int	1792	int
1551	poll_cb(...)	1793	poll_cb(...)
1552	PROTOTYPE:	1794	PROTOTYPE:
1553	CODE:	1795	CODE:
1554	RETVAL = poll_cb (0);	1796	RETVAL = poll_cb ();
1555	OUTPUT:
1556	RETVAL
1557
1558	int
1559	poll_some(int max = 0)
1560	PROTOTYPE: $
1561	CODE:
1562	RETVAL = poll_cb (max);
1563	OUTPUT:	1797	OUTPUT:
1564	RETVAL	1798	RETVAL
1565		1799
1566	void	1800	void
1567	poll_wait()	1801	poll_wait()
1568	PROTOTYPE:	1802	PROTOTYPE:
1569	CODE:	1803	CODE:
1570	if (nreqs)
1571	poll_wait ();	1804	poll_wait ();
		1805
		1806	void
		1807	setsig (int signum = SIGIO)
		1808	PROTOTYPE: ;$
		1809	CODE:
		1810	{
		1811	if (block_sig_level)
		1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1813
		1814	LOCK (reslock);
		1815	main_tid = pthread_self ();
		1816	main_sig = signum;
		1817	UNLOCK (reslock);
		1818
		1819	if (main_sig && npending)
		1820	pthread_kill (main_tid, main_sig);
		1821	}
		1822
		1823	void
		1824	aio_block (SV *cb)
		1825	PROTOTYPE: &
		1826	PPCODE:
		1827	{
		1828	int count;
		1829
		1830	block_sig ();
		1831	PUSHMARK (SP);
		1832	PUTBACK;
		1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1834	SPAGAIN;
		1835	unblock_sig ();
		1836
		1837	if (SvTRUE (ERRSV))
		1838	croak (0);
		1839
		1840	XSRETURN (count);
		1841	}
1572		1842
1573	int	1843	int
1574	nreqs()	1844	nreqs()
1575	PROTOTYPE:	1845	PROTOTYPE:
1576	CODE:	1846	CODE:
…		…
1592	CODE:	1862	CODE:
1593	RETVAL = get_npending ();	1863	RETVAL = get_npending ();
1594	OUTPUT:	1864	OUTPUT:
1595	RETVAL	1865	RETVAL
1596		1866
		1867	int
		1868	nthreads()
		1869	PROTOTYPE:
		1870	CODE:
		1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1872	RETVAL = started;
		1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1874	OUTPUT:
		1875	RETVAL
		1876
1597	PROTOTYPES: DISABLE	1877	PROTOTYPES: DISABLE
1598		1878
1599	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1600		1880
1601	void	1881	void
…		…
1616	PPCODE:	1896	PPCODE:
1617	{	1897	{
1618	int i;	1898	int i;
1619	aio_req req;	1899	aio_req req;
1620		1900
		1901	if (main_sig && !block_sig_level)
		1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1903
1621	if (grp->fd == 2)	1904	if (grp->int1 == 2)
1622	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1623		1906
1624	for (i = 1; i < items; ++i )	1907	for (i = 1; i < items; ++i )
1625	{	1908	{
1626	if (GIMME_V != G_VOID)	1909	if (GIMME_V != G_VOID)
…		…
1628		1911
1629	req = SvAIO_REQ (ST (i));	1912	req = SvAIO_REQ (ST (i));
1630		1913
1631	if (req)	1914	if (req)
1632	{	1915	{
1633	++grp->length;	1916	++grp->size;
1634	req->grp = grp;	1917	req->grp = grp;
1635		1918
1636	req->grp_prev = 0;	1919	req->grp_prev = 0;
1637	req->grp_next = grp->grp_first;	1920	req->grp_next = grp->grp_first;
1638		1921
…		…
1661	av = newAV ();	1944	av = newAV ();
1662		1945
1663	for (i = 1; i < items; ++i )	1946	for (i = 1; i < items; ++i )
1664	av_push (av, newSVsv (ST (i)));	1947	av_push (av, newSVsv (ST (i)));
1665		1948
1666	SvREFCNT_dec (grp->data);	1949	SvREFCNT_dec (grp->sv1);
1667	grp->data = (SV *)av;	1950	grp->sv1 = (SV *)av;
1668	}	1951	}
1669		1952
1670	void	1953	void
1671	errno (aio_req grp, int errorno = errno)	1954	errno (aio_req grp, int errorno = errno)
1672	CODE:	1955	CODE:
1673	grp->errorno = errorno;	1956	grp->errorno = errorno;
1674		1957
1675	void	1958	void
1676	limit (aio_req grp, int limit)	1959	limit (aio_req grp, int limit)
1677	CODE:	1960	CODE:
1678	grp->fd2 = limit;	1961	grp->int2 = limit;
1679	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1680		1963
1681	void	1964	void
1682	feed (aio_req grp, SV *callback=&PL_sv_undef)	1965	feed (aio_req grp, SV *callback=&PL_sv_undef)
1683	CODE:	1966	CODE:
1684	{	1967	{
1685	SvREFCNT_dec (grp->fh2);	1968	SvREFCNT_dec (grp->sv2);
1686	grp->fh2 = newSVsv (callback);	1969	grp->sv2 = newSVsv (callback);
1687		1970
1688	if (grp->fd2 <= 0)	1971	if (grp->int2 <= 0)
1689	grp->fd2 = 2;	1972	grp->int2 = 2;
1690		1973
1691	aio_grp_feed (grp);	1974	aio_grp_feed (grp);
1692	}	1975	}
1693		1976

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