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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 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	/* buffer size for various temporary buffers */	48	/* buffer size for various temporary buffers */
67	#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
68		57
69	#define dBUF \	58	#define dBUF \
70	char *aio_buf; \	59	char *aio_buf; \
71	LOCK (wrklock); \	60	LOCK (wrklock); \
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \	62	UNLOCK (wrklock); \
74	if (!aio_buf) \	63	if (!aio_buf) \
75	return -1;	64	return -1;
76		65
		66	typedef SV SV8; /* byte-sv, used for argument-checking */
		67
77	enum {	68	enum {
78	REQ_QUIT,	69	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
81	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
82	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,
83	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
85	REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
87	REQ_GROUP, REQ_NOP,	81	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,	82	REQ_BUSY,
89	};	83	};
90		84
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
93		87
94	typedef struct aio_cb	88	typedef struct aio_cb
95	{	89	{
96	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
97		91
98	SV *data, *callback;	92	SV *callback;
99	SV *fh, *fh2;	93	SV *sv1, *sv2;
100	void *dataptr, *data2ptr;	94	void *ptr1, *ptr2;
101	Stat_t *statdata;
102	off_t offset;	95	off_t offs;
103	size_t length;	96	size_t size;
104	ssize_t result;	97	ssize_t result;
		98	double nv1, nv2;
105		99
106	STRLEN dataoffset;	100	STRLEN stroffset;
107	int type;	101	int type;
108	int fd, fd2;	102	int int1, int2, int3;
109	int errorno;	103	int errorno;
110	mode_t mode; /* open */	104	mode_t mode; /* open */
111		105
112	unsigned char flags;	106	unsigned char flags;
113	unsigned char pri;	107	unsigned char pri;
…		…
115	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;	111	} aio_cb;
118		112
119	enum {	113	enum {
120	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) */
121	};	117	};
122		118
123	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
124	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
125		121
…		…
130	DEFAULT_PRI = 0,	126	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,	127	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};	129	};
134		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
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;	177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136		178
137	static unsigned int started, wanted;	179	static unsigned int started, idle, wanted;
138	static volatile unsigned int nreqs;
139	static volatile unsigned int max_outstanding = 0xffffffff;
140	static int respipe [2];
141
142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144	#else
145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
146	#endif
147
148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
150		180
151	/* worker threads management */	181	/* worker threads management */
152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	182	static mutex_t wrklock = MUTEX_INIT;
153		183
154	typedef struct worker {	184	typedef struct worker {
155	/* locked by wrklock */	185	/* locked by wrklock */
156	struct worker *prev, *next;	186	struct worker *prev, *next;
157		187
158	pthread_t tid;	188	thread_t tid;
159		189
160	/* locked by reslock, reqlock or wrklock */	190	/* locked by reslock, reqlock or wrklock */
161	aio_req req; /* currently processed request */	191	aio_req req; /* currently processed request */
162	void *dbuf;	192	void *dbuf;
163	DIR *dirp;	193	DIR *dirp;
…		…
186	wrk->prev->next = wrk->next;	216	wrk->prev->next = wrk->next;
187		217
188	free (wrk);	218	free (wrk);
189	}	219	}
190		220
		221	static volatile unsigned int nreqs, nready, npending;
		222	static volatile unsigned int max_idle = 4;
		223	static volatile unsigned int max_outstanding = 0xffffffff;
		224	static int respipe [2];
		225
191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	226	static mutex_t reslock = MUTEX_INIT;
192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	227	static mutex_t reqlock = MUTEX_INIT;
193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	228	static cond_t reqwait = COND_INIT;
		229
		230	#if WORDACCESS_UNSAFE
		231
		232	static unsigned int get_nready ()
		233	{
		234	unsigned int retval;
		235
		236	LOCK (reqlock);
		237	retval = nready;
		238	UNLOCK (reqlock);
		239
		240	return retval;
		241	}
		242
		243	static unsigned int get_npending ()
		244	{
		245	unsigned int retval;
		246
		247	LOCK (reslock);
		248	retval = npending;
		249	UNLOCK (reslock);
		250
		251	return retval;
		252	}
		253
		254	static unsigned int get_nthreads ()
		255	{
		256	unsigned int retval;
		257
		258	LOCK (wrklock);
		259	retval = started;
		260	UNLOCK (wrklock);
		261
		262	return retval;
		263	}
		264
		265	#else
		266
		267	# define get_nready() nready
		268	# define get_npending() npending
		269	# define get_nthreads() started
		270
		271	#endif
194		272
195	/*	273	/*
196	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
197	* with 8 priorities this actually needs <20 insns	275	* with 8 priorities this actually needs <20 insns
198	* per shift, the most expensive operation.	276	* per shift, the most expensive operation.
…		…
244	}	322	}
245		323
246	abort ();	324	abort ();
247	}	325	}
248		326
249	static int poll_cb (int max);	327	static int poll_cb ();
250	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
251	static void req_free (aio_req req);	329	static void req_destroy (aio_req req);
252	static void req_cancel (aio_req req);	330	static void req_cancel (aio_req req);
253		331
254	/* must be called at most once */	332	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
256	{	334	{
…		…
275	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	354	}
277		355
278	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
279	{	357	{
		358	block_sig ();
		359
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
281	{	361	{
282	int old_len = grp->length;	362	int old_len = grp->size;
283		363
284	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
285	{	365	{
286	dSP;	366	dSP;
287		367
288	ENTER;	368	ENTER;
289	SAVETMPS;	369	SAVETMPS;
290	PUSHMARK (SP);	370	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
292	PUTBACK;	372	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	374	SPAGAIN;
295	FREETMPS;	375	FREETMPS;
296	LEAVE;	376	LEAVE;
297	}	377	}
298		378
299	/* stop if no progress has been made */	379	/* stop if no progress has been made */
300	if (old_len == grp->length)	380	if (old_len == grp->size)
301	{	381	{
302	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
303	grp->fh2 = 0;	383	grp->sv2 = 0;
304	break;	384	break;
305	}	385	}
306	}	386	}
		387
		388	unblock_sig ();
307	}	389	}
308		390
309	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
310	{	392	{
311	--grp->length;	393	--grp->size;
312		394
313	/* call feeder, if applicable */	395	/* call feeder, if applicable */
314	aio_grp_feed (grp);	396	aio_grp_feed (grp);
315		397
316	/* finish, if done */	398	/* finish, if done */
317	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
318	{	400	{
		401	block_sig ();
		402
319	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
320	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
321	}	412	}
322	}	413	}
323		414
324	static void poll_wait ()
325	{
326	fd_set rfd;
327
328	while (nreqs)
329	{
330	int size;
331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332	LOCK (reslock);
333	#endif
334	size = res_queue.size;
335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336	UNLOCK (reslock);
337	#endif
338
339	if (size)
340	return;
341
342	FD_ZERO(&rfd);
343	FD_SET(respipe [0], &rfd);
344
345	select (respipe [0] + 1, &rfd, 0, 0, 0);
346	}
347	}
348
349	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
350	{	416	{
351	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
352		421
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
354	{	423	{
355	errno = req->errorno;
356
357	ENTER;	424	ENTER;
358	SAVETMPS;	425	SAVETMPS;
359	PUSHMARK (SP);	426	PUSHMARK (SP);
360	EXTEND (SP, 1);	427	EXTEND (SP, 1);
361		428
…		…
366	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
367		434
368	if (req->result >= 0)	435	if (req->result >= 0)
369	{	436	{
370	int i;	437	int i;
371	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
372	AV *av = newAV ();	439	AV *av = newAV ();
373		440
374	av_extend (av, req->result - 1);	441	av_extend (av, req->result - 1);
375		442
376	for (i = 0; i < req->result; ++i)	443	for (i = 0; i < req->result; ++i)
…		…
396	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
397	PUTBACK;	464	PUTBACK;
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
399	SPAGAIN;	466	SPAGAIN;
400		467
401	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
402
403	PUSHMARK (SP);	469	PUSHMARK (SP);
404	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
405	}	471	}
406	break;	472	break;
407		473
408	case REQ_GROUP:	474	case REQ_GROUP:
409	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
410		476
411	if (req->data)	477	if (req->sv1)
412	{	478	{
413	int i;	479	int i;
414	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
415		481
416	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
419	}	485	}
…		…
421		487
422	case REQ_NOP:	488	case REQ_NOP:
423	case REQ_BUSY:	489	case REQ_BUSY:
424	break;	490	break;
425		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
426	default:	516	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
428	break;	518	break;
429	}	519	}
430		520
		521	errno = req->errorno;
431		522
432	PUTBACK;	523	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
434	SPAGAIN;	525	SPAGAIN;
435		526
…		…
449	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
450		541
451	aio_grp_dec (grp);	542	aio_grp_dec (grp);
452	}	543	}
453		544
454	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
455	{
456	req_free (req);
457	croak (0);
458	}
459	}	546	}
460		547
461	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
462	{	549	{
463	if (req->self)	550	if (req->self)
464	{	551	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
467	}	554	}
468		555
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
472	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474		559
475	if (req->type == REQ_READDIR)	560	if (req->flags & FLAG_PTR2_FREE)
476	free (req->data2ptr);	561	free (req->ptr2);
477		562
478	Safefree (req);	563	Safefree (req);
479	}	564	}
480		565
481	static void req_cancel_subs (aio_req grp)	566	static void req_cancel_subs (aio_req grp)
…		…
483	aio_req sub;	568	aio_req sub;
484		569
485	if (grp->type != REQ_GROUP)	570	if (grp->type != REQ_GROUP)
486	return;	571	return;
487		572
488	SvREFCNT_dec (grp->fh2);	573	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	574	grp->sv2 = 0;
490		575
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
492	req_cancel (sub);	577	req_cancel (sub);
493	}	578	}
494		579
…		…
497	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
498		583
499	req_cancel_subs (req);	584	req_cancel_subs (req);
500	}	585	}
501		586
502	static int poll_cb (int max)
503	{
504	dSP;
505	int count = 0;
506	int do_croak = 0;
507	aio_req req;
508
509	for (;;)
510	{
511	while (max <= 0 || count < max)
512	{
513	LOCK (reslock);
514	req = reqq_shift (&res_queue);
515
516	if (req)
517	{
518	if (!res_queue.size)
519	{
520	/* read any signals sent by the worker threads */
521	char buf [32];
522	while (read (respipe [0], buf, 32) == 32)
523	;
524	}
525	}
526
527	UNLOCK (reslock);
528
529	if (!req)
530	break;
531
532	--nreqs;
533
534	if (req->type == REQ_QUIT)
535	--started;
536	else if (req->type == REQ_GROUP && req->length)
537	{
538	req->fd = 1; /* mark request as delayed */
539	continue;
540	}
541	else
542	{
543	if (req->type == REQ_READ)
544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547	SvREADONLY_off (req->data);
548
549	if (req->statdata)
550	{
551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552	PL_laststatval = req->result;
553	PL_statcache = *(req->statdata);
554	}
555
556	req_invoke (req);
557
558	count++;
559	}
560
561	req_free (req);
562	}
563
564	if (nreqs <= max_outstanding)
565	break;
566
567	poll_wait ();
568
569	max = 0;
570	}
571
572	return count;
573	}
574
575	static void *aio_proc(void *arg);	587	static void *aio_proc (void *arg);
576		588
577	static void start_thread (void)	589	static void start_thread (void)
578	{	590	{
579	sigset_t fullsigset, oldsigset;
580	pthread_attr_t attr;
581
582	worker *wrk = calloc (1, sizeof (worker));	591	worker *wrk = calloc (1, sizeof (worker));
583		592
584	if (!wrk)	593	if (!wrk)
585	croak ("unable to allocate worker thread data");	594	croak ("unable to allocate worker thread data");
586		595
587	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);
589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);	596	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595		597
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
597	{	599	{
598	wrk->prev = &wrk_first;	600	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;	601	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;	602	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;	603	wrk_first.next = wrk;
602	++started;	604	++started;
603	}	605	}
604	else	606	else
605	free (wrk);	607	free (wrk);
606		608
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);	609	UNLOCK (wrklock);
609	}	610	}
610		611
		612	static void maybe_start_thread ()
		613	{
		614	if (get_nthreads () >= wanted)
		615	return;
		616
		617	/* todo: maybe use idle here, but might be less exact */
		618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		619	return;
		620
		621	start_thread ();
		622	}
		623
611	static void req_send (aio_req req)	624	static void req_send (aio_req req)
612	{	625	{
613	while (started < wanted && nreqs >= started)	626	block_sig ();
614	start_thread ();
615		627
616	++nreqs;	628	++nreqs;
		629
		630	LOCK (reqlock);
		631	++nready;
		632	reqq_push (&req_queue, req);
		633	COND_SIGNAL (reqwait);
		634	UNLOCK (reqlock);
		635
		636	unblock_sig ();
		637
		638	maybe_start_thread ();
		639	}
		640
		641	static void end_thread (void)
		642	{
		643	aio_req req;
		644
		645	Newz (0, req, 1, aio_cb);
		646
		647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
617		649
618	LOCK (reqlock);	650	LOCK (reqlock);
619	reqq_push (&req_queue, req);	651	reqq_push (&req_queue, req);
620	pthread_cond_signal (&reqwait);	652	COND_SIGNAL (reqwait);
621	UNLOCK (reqlock);	653	UNLOCK (reqlock);
622	}
623		654
624	static void end_thread (void)	655	LOCK (wrklock);
625	{	656	--started;
626	aio_req req;	657	UNLOCK (wrklock);
		658	}
627		659
628	Newz (0, req, 1, aio_cb);	660	static void set_max_idle (int nthreads)
629		661	{
630	req->type = REQ_QUIT;	662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
631	req->pri = PRI_MAX + PRI_BIAS;	663	max_idle = nthreads <= 0 ? 1 : nthreads;
632		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
633	req_send (req);
634	}	665	}
635		666
636	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
637	{	668	{
638	if (wanted < nthreads)	669	if (wanted < nthreads)
639	wanted = nthreads;	670	wanted = nthreads;
640	}	671	}
641		672
642	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
643	{	674	{
644	int cur = started;
645
646	if (wanted > nthreads)	675	if (wanted > nthreads)
647	wanted = nthreads;	676	wanted = nthreads;
648		677
649	while (cur > wanted)	678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
650	{	687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
651	end_thread ();	696	maybe_start_thread ();
652	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
653	}	702	}
		703	}
654		704
655	while (started > wanted)	705	static int poll_cb ()
		706	{
		707	dSP;
		708	int count = 0;
		709	int maxreqs = max_poll_reqs;
		710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
		712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
		718
		719	for (;;)
656	{	720	{
		721	for (;;)
		722	{
		723	maybe_start_thread ();
		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
		728	if (req)
		729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
		734	/* read any signals sent by the worker threads */
		735	char buf [4];
		736	while (read (respipe [0], buf, 4) == 4)
		737	;
		738	}
		739	}
		740
		741	UNLOCK (reslock);
		742
		743	if (!req)
		744	break;
		745
		746	--nreqs;
		747
		748	if (req->type == REQ_GROUP && req->size)
		749	{
		750	req->int1 = 1; /* mark request as delayed */
		751	continue;
		752	}
		753	else
		754	{
		755	if (!req_invoke (req))
		756	{
		757	req_destroy (req);
		758	unblock_sig ();
		759	croak (0);
		760	}
		761
		762	count++;
		763	}
		764
		765	req_destroy (req);
		766
		767	if (maxreqs && !--maxreqs)
		768	break;
		769
		770	if (max_poll_time)
		771	{
		772	gettimeofday (&tv_now, 0);
		773
		774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		775	break;
		776	}
		777	}
		778
		779	if (nreqs <= max_outstanding)
		780	break;
		781
657	poll_wait ();	782	poll_wait ();
658	poll_cb (0);	783
		784	++maxreqs;
659	}	785	}
		786
		787	unblock_sig ();
		788	return count;
660	}	789	}
661		790
662	static void create_pipe ()	791	static void create_pipe ()
663	{	792	{
664	if (pipe (respipe))	793	if (pipe (respipe))
…		…
681	/*	810	/*
682	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
683	* 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,
684	* but that's your problem, not mine.	813	* but that's your problem, not mine.
685	*/	814	*/
686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
687		816
688	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)
689	{	818	{
690	ssize_t res;	819	ssize_t res;
691	off_t ooffset;	820	off_t ooffset;
…		…
714		843
715	return res;	844	return res;
716	}	845	}
717	#endif	846	#endif
718		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
719	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
720	# define fdatasync fsync	877	# define fdatasync fsync
721	#endif	878	#endif
722		879
723	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
…		…
742	#endif	899	#endif
743		900
744	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
745	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
746		903
747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
748		905
749	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)
750	{	907	{
751	struct dirent *e;	908	struct dirent *e;
752	int errorno;	909	int errorno;
…		…
879	int memofs = 0;	1036	int memofs = 0;
880	int res = 0;	1037	int res = 0;
881	int errorno;	1038	int errorno;
882		1039
883	LOCK (wrklock);	1040	LOCK (wrklock);
884	self->dirp = dirp = opendir (req->dataptr);	1041	self->dirp = dirp = opendir (req->ptr1);
885	self->dbuf = u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
886	req->data2ptr = names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
887	UNLOCK (wrklock);	1045	UNLOCK (wrklock);
888		1046
889	if (dirp && u && names)	1047	if (dirp && u && names)
890	for (;;)	1048	for (;;)
891	{	1049	{
…		…
905		1063
906	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
907	{	1065	{
908	memlen *= 2;	1066	memlen *= 2;
909	LOCK (wrklock);	1067	LOCK (wrklock);
910	req->data2ptr = names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
911	UNLOCK (wrklock);	1069	UNLOCK (wrklock);
912		1070
913	if (!names)	1071	if (!names)
914	break;	1072	break;
915	}	1073	}
…		…
928	/*****************************************************************************/	1086	/*****************************************************************************/
929		1087
930	static void *aio_proc (void *thr_arg)	1088	static void *aio_proc (void *thr_arg)
931	{	1089	{
932	aio_req req;	1090	aio_req req;
933	int type;	1091	struct timespec ts;
934	worker *self = (worker *)thr_arg;	1092	worker *self = (worker *)thr_arg;
935		1093
936	do	1094	/* try to distribute timeouts somewhat evenly */
		1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1096	* (1000000000UL / 1024UL);
		1097
		1098	for (;;)
937	{	1099	{
		1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1101
938	LOCK (reqlock);	1102	LOCK (reqlock);
939		1103
940	for (;;)	1104	for (;;)
941	{	1105	{
942	self->req = req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
943		1107
944	if (req)	1108	if (req)
945	break;	1109	break;
946		1110
947	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;
948	}	1132	}
		1133
		1134	--nready;
949		1135
950	UNLOCK (reqlock);	1136	UNLOCK (reqlock);
951		1137
952	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
953	type = req->type; /* remember type for QUIT check */
954		1139
955	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
956	switch (type)	1141	switch (req->type)
957	{	1142	{
958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
959	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;
960		1149
961	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;
962	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;
963		1152
964	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;
965	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;
966	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;
967		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
968	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;
969	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
971	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;
972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
975		1172
976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
977	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
978	case REQ_READDIR: scandir_ (req, self); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
979		1176
980	case REQ_BUSY:	1177	case REQ_BUSY:
981	{	1178	{
982	struct timeval tv;	1179	struct timeval tv;
983		1180
984	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
985	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
986		1183
987	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
988	}	1185	}
989		1186
		1187	case REQ_UTIME:
		1188	case REQ_FUTIME:
		1189	{
		1190	struct timeval tv[2];
		1191	struct timeval *times;
		1192
		1193	if (req->nv1 != -1. || req->nv2 != -1.)
		1194	{
		1195	tv[0].tv_sec = req->nv1;
		1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1197	tv[1].tv_sec = req->nv2;
		1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1199
		1200	times = tv;
		1201	}
		1202	else
		1203	times = 0;
		1204
		1205
		1206	req->result = req->type == REQ_FUTIME
		1207	? futimes (req->int1, times)
		1208	: utimes (req->ptr1, times);
		1209	}
		1210
990	case REQ_GROUP:	1211	case REQ_GROUP:
991	case REQ_NOP:	1212	case REQ_NOP:
		1213	break;
		1214
992	case REQ_QUIT:	1215	case REQ_QUIT:
993	break;	1216	goto quit;
994		1217
995	default:	1218	default:
996	req->result = ENOSYS;	1219	req->result = -1;
997	break;	1220	break;
998	}	1221	}
999		1222
1000	req->errorno = errno;	1223	req->errorno = errno;
1001		1224
1002	LOCK (reslock);	1225	LOCK (reslock);
1003		1226
		1227	++npending;
		1228
1004	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
1005	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
1006	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	}
1007		1238
1008	self->req = 0;	1239	self->req = 0;
1009	worker_clear (self);	1240	worker_clear (self);
1010		1241
1011	UNLOCK (reslock);	1242	UNLOCK (reslock);
1012	}	1243	}
1013	while (type != REQ_QUIT);
1014		1244
		1245	quit:
1015	LOCK (wrklock);	1246	LOCK (wrklock);
1016	worker_free (self);	1247	worker_free (self);
1017	UNLOCK (wrklock);	1248	UNLOCK (wrklock);
1018		1249
1019	return 0;	1250	return 0;
…		…
1050	static void atfork_child (void)	1281	static void atfork_child (void)
1051	{	1282	{
1052	aio_req prv;	1283	aio_req prv;
1053		1284
1054	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
1055	req_free (prv);	1286	req_destroy (prv);
1056		1287
1057	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
1058	req_free (prv);	1289	req_destroy (prv);
1059		1290
1060	while (wrk_first.next != &wrk_first)	1291	while (wrk_first.next != &wrk_first)
1061	{	1292	{
1062	worker *wrk = wrk_first.next;	1293	worker *wrk = wrk_first.next;
1063		1294
1064	if (wrk->req)	1295	if (wrk->req)
1065	req_free (wrk->req);	1296	req_destroy (wrk->req);
1066		1297
1067	worker_clear (wrk);	1298	worker_clear (wrk);
1068	worker_free (wrk);	1299	worker_free (wrk);
1069	}	1300	}
1070		1301
1071	started = 0;	1302	started = 0;
		1303	idle = 0;
1072	nreqs = 0;	1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
1073		1307
1074	close (respipe [0]);	1308	close (respipe [0]);
1075	close (respipe [1]);	1309	close (respipe [1]);
1076	create_pipe ();	1310	create_pipe ();
1077		1311
…		…
1104	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1105		1339
1106	BOOT:	1340	BOOT:
1107	{	1341	{
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1112		1351
1113	create_pipe ();	1352	create_pipe ();
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1115	}	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;
1116		1367
1117	void	1368	void
1118	min_parallel (int nthreads)	1369	min_parallel (int nthreads)
1119	PROTOTYPE: $	1370	PROTOTYPE: $
1120		1371
1121	void	1372	void
1122	max_parallel (int nthreads)	1373	max_parallel (int nthreads)
1123	PROTOTYPE: $	1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
1124		1381
1125	int	1382	int
1126	max_outstanding (int maxreqs)	1383	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	1384	PROTOTYPE: $
1128	CODE:	1385	CODE:
…		…
1130	max_outstanding = maxreqs;	1387	max_outstanding = maxreqs;
1131	OUTPUT:	1388	OUTPUT:
1132	RETVAL	1389	RETVAL
1133		1390
1134	void	1391	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1136	SV * pathname
1137	int flags
1138	int mode
1139	SV * callback
1140	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1141	PPCODE:	1394	PPCODE:
1142	{	1395	{
1143	dREQ;	1396	dREQ;
1144		1397
1145	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1146	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1148	req->fd = flags;	1401	req->int1 = flags;
1149	req->mode = mode;	1402	req->mode = mode;
1150		1403
1151	REQ_SEND;	1404	REQ_SEND;
1152	}	1405	}
1153		1406
1154	void	1407	void
1155	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1156	SV * fh
1157	SV * callback
1158	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1159	ALIAS:	1410	ALIAS:
1160	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1161	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1162	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1163	PPCODE:	1414	PPCODE:
1164	{	1415	{
1165	dREQ;	1416	dREQ;
1166		1417
1167	req->type = ix;	1418	req->type = ix;
1168	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1170		1421
1171	REQ_SEND (req);	1422	REQ_SEND (req);
1172	}	1423	}
1173		1424
1174	void	1425	void
1175	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)
1176	SV * fh
1177	UV offset
1178	UV length
1179	SV * data
1180	UV dataoffset
1181	SV * callback
1182	ALIAS:	1427	ALIAS:
1183	aio_read = REQ_READ	1428	aio_read = REQ_READ
1184	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1185	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1186	PPCODE:	1431	PPCODE:
1187	{	1432	{
1188	aio_req req;
1189	STRLEN svlen;	1433	STRLEN svlen;
1190	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
		1435	UV len = SvUV (length);
1191		1436
1192	SvUPGRADE (data, SVt_PV);	1437	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);	1438	SvPOK_on (data);
1194		1439
1195	if (dataoffset < 0)	1440	if (dataoffset < 0)
1196	dataoffset += svlen;	1441	dataoffset += svlen;
1197		1442
1198	if (dataoffset < 0 || dataoffset > svlen)	1443	if (dataoffset < 0 || dataoffset > svlen)
1199	croak ("data offset outside of string");	1444	croak ("dataoffset outside of data scalar");
1200		1445
1201	if (ix == REQ_WRITE)	1446	if (ix == REQ_WRITE)
1202	{	1447	{
1203	/* write: check length and adjust. */	1448	/* write: check length and adjust. */
1204	if (length < 0 || length + dataoffset > svlen)	1449	if (!SvOK (length) || len + dataoffset > svlen)
1205	length = svlen - dataoffset;	1450	len = svlen - dataoffset;
1206	}	1451	}
1207	else	1452	else
1208	{	1453	{
1209	/* read: grow scalar as necessary */	1454	/* read: grow scalar as necessary */
1210	svptr = SvGROW (data, length + dataoffset);	1455	svptr = SvGROW (data, len + dataoffset + 1);
1211	}	1456	}
1212		1457
1213	if (length < 0)	1458	if (len < 0)
1214	croak ("length must not be negative");	1459	croak ("length must not be negative");
1215		1460
1216	{	1461	{
1217	dREQ;	1462	dREQ;
1218		1463
1219	req->type = ix;	1464	req->type = ix;
1220	req->fh = newSVsv (fh);	1465	req->sv1 = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1222	: IoOFP (sv_2io (fh)));	1467	: IoOFP (sv_2io (fh)));
		1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1223	req->offset = offset;	1469	req->size = len;
1224	req->length = length;
1225	req->data = SvREFCNT_inc (data);	1470	req->sv2 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	1471	req->ptr1 = (char *)svptr + dataoffset;
		1472	req->stroffset = dataoffset;
1227		1473
1228	if (!SvREADONLY (data))	1474	if (!SvREADONLY (data))
1229	{	1475	{
1230	SvREADONLY_on (data);	1476	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	1477	req->flags |= FLAG_SV2_RO_OFF;
1232	}	1478	}
1233		1479
1234	REQ_SEND;	1480	REQ_SEND;
1235	}	1481	}
1236	}	1482	}
1237		1483
1238	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
1239	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)
1240	SV * out_fh
1241	SV * in_fh
1242	UV in_offset
1243	UV length
1244	SV * callback
1245	PROTOTYPE: $$$$;$	1506	PROTOTYPE: $$$$;$
1246	PPCODE:	1507	PPCODE:
1247	{	1508	{
1248	dREQ;	1509	dREQ;
1249		1510
1250	req->type = REQ_SENDFILE;	1511	req->type = REQ_SENDFILE;
1251	req->fh = newSVsv (out_fh);	1512	req->sv1 = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1253	req->fh2 = newSVsv (in_fh);	1514	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1255	req->offset = in_offset;	1516	req->offs = SvVAL64 (in_offset);
1256	req->length = length;	1517	req->size = length;
1257		1518
1258	REQ_SEND;	1519	REQ_SEND;
1259	}	1520	}
1260		1521
1261	void	1522	void
1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1263	SV * fh
1264	UV offset
1265	IV length
1266	SV * callback
1267	PROTOTYPE: $$$;$	1524	PROTOTYPE: $$$;$
1268	PPCODE:	1525	PPCODE:
1269	{	1526	{
1270	dREQ;	1527	dREQ;
1271		1528
1272	req->type = REQ_READAHEAD;	1529	req->type = REQ_READAHEAD;
1273	req->fh = newSVsv (fh);	1530	req->sv1 = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1275	req->offset = offset;	1532	req->offs = SvVAL64 (offset);
1276	req->length = length;	1533	req->size = length;
1277		1534
1278	REQ_SEND;	1535	REQ_SEND;
1279	}	1536	}
1280		1537
1281	void	1538	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1283	SV * fh_or_path
1284	SV * callback
1285	ALIAS:	1540	ALIAS:
1286	aio_stat = REQ_STAT	1541	aio_stat = REQ_STAT
1287	aio_lstat = REQ_LSTAT	1542	aio_lstat = REQ_LSTAT
1288	PPCODE:	1543	PPCODE:
1289	{	1544	{
1290	dREQ;	1545	dREQ;
1291		1546
1292	New (0, req->statdata, 1, Stat_t);	1547	req->ptr2 = malloc (sizeof (Stat_t));
1293	if (!req->statdata)	1548	if (!req->ptr2)
1294	{	1549	{
1295	req_free (req);	1550	req_destroy (req);
1296	croak ("out of memory during aio_req->statdata allocation");	1551	croak ("out of memory during aio_stat statdata allocation");
1297	}	1552	}
		1553
		1554	req->flags |= FLAG_PTR2_FREE;
		1555	req->sv1 = newSVsv (fh_or_path);
1298		1556
1299	if (SvPOK (fh_or_path))	1557	if (SvPOK (fh_or_path))
1300	{	1558	{
1301	req->type = ix;	1559	req->type = ix;
1302	req->data = newSVsv (fh_or_path);
1303	req->dataptr = SvPVbyte_nolen (req->data);	1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1304	}	1561	}
1305	else	1562	else
1306	{	1563	{
1307	req->type = REQ_FSTAT;	1564	req->type = REQ_FSTAT;
1308	req->fh = newSVsv (fh_or_path);
1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1310	}	1566	}
1311		1567
1312	REQ_SEND;	1568	REQ_SEND;
1313	}	1569	}
1314		1570
1315	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
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1317	SV * pathname
1318	SV * callback
1319	ALIAS:	1644	ALIAS:
1320	aio_unlink = REQ_UNLINK	1645	aio_unlink = REQ_UNLINK
1321	aio_rmdir = REQ_RMDIR	1646	aio_rmdir = REQ_RMDIR
1322	aio_readdir = REQ_READDIR	1647	aio_readdir = REQ_READDIR
1323	PPCODE:	1648	PPCODE:
1324	{	1649	{
1325	dREQ;	1650	dREQ;
1326		1651
1327	req->type = ix;	1652	req->type = ix;
1328	req->data = newSVsv (pathname);	1653	req->sv1 = newSVsv (pathname);
1329	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;
1330		1664
		1665	req->type = REQ_MKDIR;
		1666	req->sv1 = newSVsv (pathname);
		1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1668	req->mode = mode;
		1669
1331	REQ_SEND;	1670	REQ_SEND;
1332	}	1671	}
1333		1672
1334	void	1673	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1336	SV * oldpath
1337	SV * newpath
1338	SV * callback
1339	ALIAS:	1675	ALIAS:
1340	aio_link = REQ_LINK	1676	aio_link = REQ_LINK
1341	aio_symlink = REQ_SYMLINK	1677	aio_symlink = REQ_SYMLINK
1342	aio_rename = REQ_RENAME	1678	aio_rename = REQ_RENAME
1343	PPCODE:	1679	PPCODE:
1344	{	1680	{
1345	dREQ;	1681	dREQ;
1346		1682
1347	req->type = ix;	1683	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1684	req->sv2 = newSVsv (oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1350	req->data = newSVsv (newpath);	1686	req->sv1 = newSVsv (newpath);
1351	req->dataptr = SvPVbyte_nolen (req->data);	1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1352		1688
1353	REQ_SEND;	1689	REQ_SEND;
1354	}	1690	}
1355		1691
1356	void	1692	void
1357	aio_busy (delay,callback=&PL_sv_undef)	1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1358	double delay
1359	SV * callback
1360	PPCODE:	1694	PPCODE:
1361	{	1695	{
1362	dREQ;	1696	dREQ;
		1697
		1698	req->type = REQ_MKNOD;
		1699	req->sv1 = newSVsv (pathname);
		1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1701	req->mode = (mode_t)mode;
		1702	req->offs = dev;
		1703
		1704	REQ_SEND;
		1705	}
		1706
		1707	void
		1708	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
1363		1712
1364	req->type = REQ_BUSY;	1713	req->type = REQ_BUSY;
1365	req->fd = delay < 0. ? 0 : delay;	1714	req->nv1 = delay < 0. ? 0. : delay;
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1367		1715
1368	REQ_SEND;	1716	REQ_SEND;
1369	}	1717	}
1370		1718
1371	void	1719	void
1372	aio_group (callback=&PL_sv_undef)	1720	aio_group (SV *callback=&PL_sv_undef)
1373	SV * callback
1374	PROTOTYPE: ;$	1721	PROTOTYPE: ;$
1375	PPCODE:	1722	PPCODE:
1376	{	1723	{
1377	dREQ;	1724	dREQ;
1378		1725
1379	req->type = REQ_GROUP;	1726	req->type = REQ_GROUP;
		1727
1380	req_send (req);	1728	req_send (req);
1381
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1383	}	1730	}
1384		1731
1385	void	1732	void
1386	aio_nop (callback=&PL_sv_undef)	1733	aio_nop (SV *callback=&PL_sv_undef)
1387	SV * callback
1388	PPCODE:	1734	PPCODE:
1389	{	1735	{
1390	dREQ;	1736	dREQ;
1391		1737
1392	req->type = REQ_NOP;	1738	req->type = REQ_NOP;
1393		1739
1394	REQ_SEND;	1740	REQ_SEND;
1395	}	1741	}
1396		1742
1397	void	1743	int
1398	aioreq_pri (int pri = DEFAULT_PRI)	1744	aioreq_pri (int pri = 0)
1399	CODE:	1745	PROTOTYPE: ;$
		1746	CODE:
		1747	RETVAL = next_pri - PRI_BIAS;
		1748	if (items > 0)
		1749	{
1400	if (pri < PRI_MIN) pri = PRI_MIN;	1750	if (pri < PRI_MIN) pri = PRI_MIN;
1401	if (pri > PRI_MAX) pri = PRI_MAX;	1751	if (pri > PRI_MAX) pri = PRI_MAX;
1402	next_pri = pri + PRI_BIAS;	1752	next_pri = pri + PRI_BIAS;
		1753	}
		1754	OUTPUT:
		1755	RETVAL
1403		1756
1404	void	1757	void
1405	aioreq_nice (int nice = 0)	1758	aioreq_nice (int nice = 0)
1406	CODE:	1759	CODE:
1407	nice = next_pri - nice;	1760	nice = next_pri - nice;
1408	if (nice < PRI_MIN) nice = PRI_MIN;	1761	if (nice < PRI_MIN) nice = PRI_MIN;
1409	if (nice > PRI_MAX) nice = PRI_MAX;	1762	if (nice > PRI_MAX) nice = PRI_MAX;
1410	next_pri = nice + PRI_BIAS;	1763	next_pri = nice + PRI_BIAS;
1411		1764
1412	void	1765	void
1413	flush ()	1766	flush ()
1414	PROTOTYPE:	1767	PROTOTYPE:
1415	CODE:	1768	CODE:
1416	while (nreqs)	1769	while (nreqs)
1417	{	1770	{
1418	poll_wait ();	1771	poll_wait ();
1419	poll_cb (0);	1772	poll_cb ();
1420	}	1773	}
1421		1774
1422	void	1775	int
1423	poll()	1776	poll()
1424	PROTOTYPE:	1777	PROTOTYPE:
1425	CODE:	1778	CODE:
1426	if (nreqs)
1427	{
1428	poll_wait ();	1779	poll_wait ();
1429	poll_cb (0);	1780	RETVAL = poll_cb ();
1430	}	1781	OUTPUT:
		1782	RETVAL
1431		1783
1432	int	1784	int
1433	poll_fileno()	1785	poll_fileno()
1434	PROTOTYPE:	1786	PROTOTYPE:
1435	CODE:	1787	CODE:
…		…
1439		1791
1440	int	1792	int
1441	poll_cb(...)	1793	poll_cb(...)
1442	PROTOTYPE:	1794	PROTOTYPE:
1443	CODE:	1795	CODE:
1444	RETVAL = poll_cb (0);	1796	RETVAL = poll_cb ();
1445	OUTPUT:
1446	RETVAL
1447
1448	int
1449	poll_some(int max = 0)
1450	PROTOTYPE: $
1451	CODE:
1452	RETVAL = poll_cb (max);
1453	OUTPUT:	1797	OUTPUT:
1454	RETVAL	1798	RETVAL
1455		1799
1456	void	1800	void
1457	poll_wait()	1801	poll_wait()
1458	PROTOTYPE:	1802	PROTOTYPE:
1459	CODE:	1803	CODE:
1460	if (nreqs)
1461	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	}
1462		1842
1463	int	1843	int
1464	nreqs()	1844	nreqs()
1465	PROTOTYPE:	1845	PROTOTYPE:
1466	CODE:	1846	CODE:
1467	RETVAL = nreqs;	1847	RETVAL = nreqs;
1468	OUTPUT:	1848	OUTPUT:
1469	RETVAL	1849	RETVAL
1470		1850
		1851	int
		1852	nready()
		1853	PROTOTYPE:
		1854	CODE:
		1855	RETVAL = get_nready ();
		1856	OUTPUT:
		1857	RETVAL
		1858
		1859	int
		1860	npending()
		1861	PROTOTYPE:
		1862	CODE:
		1863	RETVAL = get_npending ();
		1864	OUTPUT:
		1865	RETVAL
		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
1471	PROTOTYPES: DISABLE	1877	PROTOTYPES: DISABLE
1472		1878
1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474		1880
1475	void	1881	void
…		…
1490	PPCODE:	1896	PPCODE:
1491	{	1897	{
1492	int i;	1898	int i;
1493	aio_req req;	1899	aio_req req;
1494		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
1495	if (grp->fd == 2)	1904	if (grp->int1 == 2)
1496	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");
1497		1906
1498	for (i = 1; i < items; ++i )	1907	for (i = 1; i < items; ++i )
1499	{	1908	{
1500	if (GIMME_V != G_VOID)	1909	if (GIMME_V != G_VOID)
…		…
1502		1911
1503	req = SvAIO_REQ (ST (i));	1912	req = SvAIO_REQ (ST (i));
1504		1913
1505	if (req)	1914	if (req)
1506	{	1915	{
1507	++grp->length;	1916	++grp->size;
1508	req->grp = grp;	1917	req->grp = grp;
1509		1918
1510	req->grp_prev = 0;	1919	req->grp_prev = 0;
1511	req->grp_next = grp->grp_first;	1920	req->grp_next = grp->grp_first;
1512		1921
…		…
1526	void	1935	void
1527	result (aio_req grp, ...)	1936	result (aio_req grp, ...)
1528	CODE:	1937	CODE:
1529	{	1938	{
1530	int i;	1939	int i;
		1940	AV *av;
		1941
		1942	grp->errorno = errno;
		1943
1531	AV *av = newAV ();	1944	av = newAV ();
1532		1945
1533	for (i = 1; i < items; ++i )	1946	for (i = 1; i < items; ++i )
1534	av_push (av, newSVsv (ST (i)));	1947	av_push (av, newSVsv (ST (i)));
1535		1948
1536	SvREFCNT_dec (grp->data);	1949	SvREFCNT_dec (grp->sv1);
1537	grp->data = (SV *)av;	1950	grp->sv1 = (SV *)av;
1538	}	1951	}
		1952
		1953	void
		1954	errno (aio_req grp, int errorno = errno)
		1955	CODE:
		1956	grp->errorno = errorno;
1539		1957
1540	void	1958	void
1541	limit (aio_req grp, int limit)	1959	limit (aio_req grp, int limit)
1542	CODE:	1960	CODE:
1543	grp->fd2 = limit;	1961	grp->int2 = limit;
1544	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1545		1963
1546	void	1964	void
1547	feed (aio_req grp, SV *callback=&PL_sv_undef)	1965	feed (aio_req grp, SV *callback=&PL_sv_undef)
1548	CODE:	1966	CODE:
1549	{	1967	{
1550	SvREFCNT_dec (grp->fh2);	1968	SvREFCNT_dec (grp->sv2);
1551	grp->fh2 = newSVsv (callback);	1969	grp->sv2 = newSVsv (callback);
1552		1970
1553	if (grp->fd2 <= 0)	1971	if (grp->int2 <= 0)
1554	grp->fd2 = 2;	1972	grp->int2 = 2;
1555		1973
1556	aio_grp_feed (grp);	1974	aio_grp_feed (grp);
1557	}	1975	}
1558		1976

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