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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 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 int started, wanted;	179	static unsigned int started, idle, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149		180
150	/* worker threads management */	181	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	182	static mutex_t wrklock = MUTEX_INIT;
152		183
153	typedef struct worker {	184	typedef struct worker {
154	/* locked by wrklock */	185	/* locked by wrklock */
155	struct worker *prev, *next;	186	struct worker *prev, *next;
156		187
157	pthread_t tid;	188	thread_t tid;
158		189
159	/* locked by reslock, reqlock or wrklock */	190	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */	191	aio_req req; /* currently processed request */
161	void *dbuf;	192	void *dbuf;
162	DIR *dirp;	193	DIR *dirp;
…		…
185	wrk->prev->next = wrk->next;	216	wrk->prev->next = wrk->next;
186		217
187	free (wrk);	218	free (wrk);
188	}	219	}
189		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
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	226	static mutex_t reslock = MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	227	static mutex_t reqlock = MUTEX_INIT;
192	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
193		272
194	/*	273	/*
195	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns	275	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.	276	* per shift, the most expensive operation.
…		…
243	}	322	}
244		323
245	abort ();	324	abort ();
246	}	325	}
247		326
248	static int poll_cb (int max);	327	static int poll_cb ();
249	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
250	static void req_free (aio_req req);	329	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	330	static void req_cancel (aio_req req);
252		331
253	/* must be called at most once */	332	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
255	{	334	{
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	354	}
276		355
277	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
278	{	357	{
		358	block_sig ();
		359
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
280	{	361	{
281	int old_len = grp->length;	362	int old_len = grp->size;
282		363
283	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
284	{	365	{
285	dSP;	366	dSP;
286		367
287	ENTER;	368	ENTER;
288	SAVETMPS;	369	SAVETMPS;
289	PUSHMARK (SP);	370	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	372	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	374	SPAGAIN;
294	FREETMPS;	375	FREETMPS;
295	LEAVE;	376	LEAVE;
296	}	377	}
297		378
298	/* stop if no progress has been made */	379	/* stop if no progress has been made */
299	if (old_len == grp->length)	380	if (old_len == grp->size)
300	{	381	{
301	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
302	grp->fh2 = 0;	383	grp->sv2 = 0;
303	break;	384	break;
304	}	385	}
305	}	386	}
		387
		388	unblock_sig ();
306	}	389	}
307		390
308	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
309	{	392	{
310	--grp->length;	393	--grp->size;
311		394
312	/* call feeder, if applicable */	395	/* call feeder, if applicable */
313	aio_grp_feed (grp);	396	aio_grp_feed (grp);
314		397
315	/* finish, if done */	398	/* finish, if done */
316	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
317	{	400	{
		401	block_sig ();
		402
318	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
319	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
320	}	412	}
321	}	413	}
322		414
323	static void poll_wait ()
324	{
325	fd_set rfd;
326
327	while (nreqs)
328	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
349	{	416	{
350	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
351		421
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{	423	{
354	errno = req->errorno;
355
356	ENTER;	424	ENTER;
357	SAVETMPS;	425	SAVETMPS;
358	PUSHMARK (SP);	426	PUSHMARK (SP);
359	EXTEND (SP, 1);	427	EXTEND (SP, 1);
360		428
…		…
365	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
366		434
367	if (req->result >= 0)	435	if (req->result >= 0)
368	{	436	{
369	int i;	437	int i;
370	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
371	AV *av = newAV ();	439	AV *av = newAV ();
372		440
373	av_extend (av, req->result - 1);	441	av_extend (av, req->result - 1);
374		442
375	for (i = 0; i < req->result; ++i)	443	for (i = 0; i < req->result; ++i)
…		…
395	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
396	PUTBACK;	464	PUTBACK;
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
398	SPAGAIN;	466	SPAGAIN;
399		467
400	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
401
402	PUSHMARK (SP);	469	PUSHMARK (SP);
403	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
404	}	471	}
405	break;	472	break;
406		473
407	case REQ_GROUP:	474	case REQ_GROUP:
408	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
409		476
410	if (req->data)	477	if (req->sv1)
411	{	478	{
412	int i;	479	int i;
413	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
414		481
415	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
418	}	485	}
…		…
420		487
421	case REQ_NOP:	488	case REQ_NOP:
422	case REQ_BUSY:	489	case REQ_BUSY:
423	break;	490	break;
424		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
425	default:	516	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	518	break;
428	}	519	}
429		520
		521	errno = req->errorno;
430		522
431	PUTBACK;	523	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
433	SPAGAIN;	525	SPAGAIN;
434		526
…		…
448	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
449		541
450	aio_grp_dec (grp);	542	aio_grp_dec (grp);
451	}	543	}
452		544
453	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	546	}
459		547
460	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
461	{	549	{
462	if (req->self)	550	if (req->self)
463	{	551	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
466	}	554	}
467		555
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473		559
474	if (req->type == REQ_READDIR)	560	if (req->flags & FLAG_PTR2_FREE)
475	free (req->data2ptr);	561	free (req->ptr2);
476		562
477	Safefree (req);	563	Safefree (req);
478	}	564	}
479		565
480	static void req_cancel_subs (aio_req grp)	566	static void req_cancel_subs (aio_req grp)
…		…
482	aio_req sub;	568	aio_req sub;
483		569
484	if (grp->type != REQ_GROUP)	570	if (grp->type != REQ_GROUP)
485	return;	571	return;
486		572
487	SvREFCNT_dec (grp->fh2);	573	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	574	grp->sv2 = 0;
489		575
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
491	req_cancel (sub);	577	req_cancel (sub);
492	}	578	}
493		579
…		…
496	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
497		583
498	req_cancel_subs (req);	584	req_cancel_subs (req);
499	}	585	}
500		586
501	static int poll_cb (int max)
502	{
503	dSP;
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507
508	while (max <= 0 || count < max)
509	{
510	LOCK (reslock);
511	req = reqq_shift (&res_queue);
512
513	if (req)
514	{
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}
560
561	return count;
562	}
563
564	static void *aio_proc(void *arg);	587	static void *aio_proc (void *arg);
565		588
566	static void start_thread (void)	589	static void start_thread (void)
567	{	590	{
568	sigset_t fullsigset, oldsigset;
569	pthread_attr_t attr;
570
571	worker *wrk = calloc (1, sizeof (worker));	591	worker *wrk = calloc (1, sizeof (worker));
572		592
573	if (!wrk)	593	if (!wrk)
574	croak ("unable to allocate worker thread data");	594	croak ("unable to allocate worker thread data");
575		595
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);	596	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584		597
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
586	{	599	{
587	wrk->prev = &wrk_first;	600	wrk->prev = &wrk_first;
588	wrk->next = wrk_first.next;	601	wrk->next = wrk_first.next;
589	wrk_first.next->prev = wrk;	602	wrk_first.next->prev = wrk;
590	wrk_first.next = wrk;	603	wrk_first.next = wrk;
591	started++;	604	++started;
592	}	605	}
593	else	606	else
594	free (wrk);	607	free (wrk);
595		608
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);	609	UNLOCK (wrklock);
598	}	610	}
599		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
600	static void req_send (aio_req req)	624	static void req_send (aio_req req)
601	{	625	{
602	while (started < wanted && nreqs >= started)	626	block_sig ();
603	start_thread ();
604		627
605	++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;
606		649
607	LOCK (reqlock);	650	LOCK (reqlock);
608	reqq_push (&req_queue, req);	651	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);	652	COND_SIGNAL (reqwait);
610	UNLOCK (reqlock);	653	UNLOCK (reqlock);
611	}
612		654
613	static void end_thread (void)	655	LOCK (wrklock);
614	{	656	--started;
615	aio_req req;	657	UNLOCK (wrklock);
		658	}
616		659
617	Newz (0, req, 1, aio_cb);	660	static void set_max_idle (int nthreads)
618		661	{
619	req->type = REQ_QUIT;	662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
620	req->pri = PRI_MAX + PRI_BIAS;	663	max_idle = nthreads <= 0 ? 1 : nthreads;
621		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
622	req_send (req);
623	}	665	}
624		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	}
630		672
631	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
632	{	674	{
633	int cur = started;
634
635	if (wanted > nthreads)	675	if (wanted > nthreads)
636	wanted = nthreads;	676	wanted = nthreads;
637		677
638	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)
639	{	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
640	end_thread ();	696	maybe_start_thread ();
641	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	702	}
		703	}
643		704
644	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 (;;)
645	{	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
646	poll_wait ();	782	poll_wait ();
647	poll_cb (0);	783
		784	++maxreqs;
648	}	785	}
		786
		787	unblock_sig ();
		788	return count;
649	}	789	}
650		790
651	static void create_pipe ()	791	static void create_pipe ()
652	{	792	{
653	if (pipe (respipe))	793	if (pipe (respipe))
…		…
670	/*	810	/*
671	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
672	* 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,
673	* but that's your problem, not mine.	813	* but that's your problem, not mine.
674	*/	814	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
676		816
677	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)
678	{	818	{
679	ssize_t res;	819	ssize_t res;
680	off_t ooffset;	820	off_t ooffset;
…		…
703		843
704	return res;	844	return res;
705	}	845	}
706	#endif	846	#endif
707		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
708	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
709	# define fdatasync fsync	877	# define fdatasync fsync
710	#endif	878	#endif
711		879
712	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
…		…
731	#endif	899	#endif
732		900
733	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
735		903
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
737		905
738	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)
739	{	907	{
740	struct dirent *e;	908	struct dirent *e;
741	int errorno;	909	int errorno;
…		…
780	{	948	{
781	off_t sbytes;	949	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783		951
784	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
786	res = sbytes;	954	res = sbytes;
787	}	955	}
788		956
789	# elif __hpux	957	# elif __hpux
790	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
868	int memofs = 0;	1036	int memofs = 0;
869	int res = 0;	1037	int res = 0;
870	int errorno;	1038	int errorno;
871		1039
872	LOCK (wrklock);	1040	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);	1041	self->dirp = dirp = opendir (req->ptr1);
874	self->dbuf = u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
875	req->data2ptr = names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
876	UNLOCK (wrklock);	1045	UNLOCK (wrklock);
877		1046
878	if (dirp && u && names)	1047	if (dirp && u && names)
879	for (;;)	1048	for (;;)
880	{	1049	{
…		…
894		1063
895	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
896	{	1065	{
897	memlen *= 2;	1066	memlen *= 2;
898	LOCK (wrklock);	1067	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
900	UNLOCK (wrklock);	1069	UNLOCK (wrklock);
901		1070
902	if (!names)	1071	if (!names)
903	break;	1072	break;
904	}	1073	}
…		…
917	/*****************************************************************************/	1086	/*****************************************************************************/
918		1087
919	static void *aio_proc (void *thr_arg)	1088	static void *aio_proc (void *thr_arg)
920	{	1089	{
921	aio_req req;	1090	aio_req req;
922	int type;	1091	struct timespec ts;
923	worker *self = (worker *)thr_arg;	1092	worker *self = (worker *)thr_arg;
924		1093
925	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 (;;)
926	{	1099	{
		1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1101
927	LOCK (reqlock);	1102	LOCK (reqlock);
928		1103
929	for (;;)	1104	for (;;)
930	{	1105	{
931	self->req = req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
932		1107
933	if (req)	1108	if (req)
934	break;	1109	break;
935		1110
936	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;
937	}	1132	}
		1133
		1134	--nready;
938		1135
939	UNLOCK (reqlock);	1136	UNLOCK (reqlock);
940		1137
941	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943		1139
944	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)	1141	switch (req->type)
946	{	1142	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
948	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;
949		1149
950	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;
951	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;
952		1152
953	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;
954	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;
955	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;
956		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
957	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;
958	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
960	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;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
963	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;
964		1172
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
967	case REQ_READDIR: scandir_ (req, self); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
968		1176
969	case REQ_BUSY:	1177	case REQ_BUSY:
970	{	1178	{
971	struct timeval tv;	1179	struct timeval tv;
972		1180
973	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
974	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
975		1183
976	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
977	}	1185	}
978		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
979	case REQ_GROUP:	1211	case REQ_GROUP:
980	case REQ_NOP:	1212	case REQ_NOP:
		1213	break;
		1214
981	case REQ_QUIT:	1215	case REQ_QUIT:
982	break;	1216	goto quit;
983		1217
984	default:	1218	default:
985	req->result = ENOSYS;	1219	req->result = -1;
986	break;	1220	break;
987	}	1221	}
988		1222
989	req->errorno = errno;	1223	req->errorno = errno;
990		1224
991	LOCK (reslock);	1225	LOCK (reslock);
992		1226
		1227	++npending;
		1228
993	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
994	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
995	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	}
996		1238
997	self->req = 0;	1239	self->req = 0;
998	worker_clear (self);	1240	worker_clear (self);
999		1241
1000	UNLOCK (reslock);	1242	UNLOCK (reslock);
1001	}	1243	}
1002	while (type != REQ_QUIT);
1003		1244
		1245	quit:
1004	LOCK (wrklock);	1246	LOCK (wrklock);
1005	worker_free (self);	1247	worker_free (self);
1006	UNLOCK (wrklock);	1248	UNLOCK (wrklock);
1007		1249
1008	return 0;	1250	return 0;
…		…
1039	static void atfork_child (void)	1281	static void atfork_child (void)
1040	{	1282	{
1041	aio_req prv;	1283	aio_req prv;
1042		1284
1043	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);	1286	req_destroy (prv);
1045		1287
1046	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);	1289	req_destroy (prv);
1048		1290
1049	while (wrk_first.next != &wrk_first)	1291	while (wrk_first.next != &wrk_first)
1050	{	1292	{
1051	worker *wrk = wrk_first.next;	1293	worker *wrk = wrk_first.next;
1052		1294
1053	if (wrk->req)	1295	if (wrk->req)
1054	req_free (wrk->req);	1296	req_destroy (wrk->req);
1055		1297
1056	worker_clear (wrk);	1298	worker_clear (wrk);
1057	worker_free (wrk);	1299	worker_free (wrk);
1058	}	1300	}
1059		1301
1060	started = 0;	1302	started = 0;
		1303	idle = 0;
1061	nreqs = 0;	1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
1062		1307
1063	close (respipe [0]);	1308	close (respipe [0]);
1064	close (respipe [1]);	1309	close (respipe [1]);
1065	create_pipe ();	1310	create_pipe ();
1066		1311
…		…
1093	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1094		1339
1095	BOOT:	1340	BOOT:
1096	{	1341	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	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));
1101		1351
1102	create_pipe ();	1352	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1104	}	1354	}
1105		1355
1106	void	1356	void
1107	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
1110		1361
1111	void	1362	void
1112	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
1115		1367
1116	void	1368	void
		1369	min_parallel (int nthreads)
		1370	PROTOTYPE: $
		1371
		1372	void
		1373	max_parallel (int nthreads)
		1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
		1381
		1382	int
		1383	max_outstanding (int maxreqs)
		1384	PROTOTYPE: $
		1385	CODE:
		1386	RETVAL = max_outstanding;
		1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
		1390
		1391	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1123	PPCODE:	1394	PPCODE:
1124	{	1395	{
1125	dREQ;	1396	dREQ;
1126		1397
1127	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1128	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	1401	req->int1 = flags;
1131	req->mode = mode;	1402	req->mode = mode;
1132		1403
1133	REQ_SEND;	1404	REQ_SEND;
1134	}	1405	}
1135		1406
1136	void	1407	void
1137	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1141	ALIAS:	1410	ALIAS:
1142	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:	1414	PPCODE:
1146	{	1415	{
1147	dREQ;	1416	dREQ;
1148		1417
1149	req->type = ix;	1418	req->type = ix;
1150	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		1421
1153	REQ_SEND (req);	1422	REQ_SEND (req);
1154	}	1423	}
1155		1424
1156	void	1425	void
1157	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)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	1427	ALIAS:
1165	aio_read = REQ_READ	1428	aio_read = REQ_READ
1166	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1167	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1168	PPCODE:	1431	PPCODE:
1169	{	1432	{
1170	aio_req req;
1171	STRLEN svlen;	1433	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
		1435	UV len = SvUV (length);
1173		1436
1174	SvUPGRADE (data, SVt_PV);	1437	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	1438	SvPOK_on (data);
1176		1439
1177	if (dataoffset < 0)	1440	if (dataoffset < 0)
1178	dataoffset += svlen;	1441	dataoffset += svlen;
1179		1442
1180	if (dataoffset < 0 || dataoffset > svlen)	1443	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1444	croak ("dataoffset outside of data scalar");
1182		1445
1183	if (ix == REQ_WRITE)	1446	if (ix == REQ_WRITE)
1184	{	1447	{
1185	/* write: check length and adjust. */	1448	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1449	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1450	len = svlen - dataoffset;
1188	}	1451	}
1189	else	1452	else
1190	{	1453	{
1191	/* read: grow scalar as necessary */	1454	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	1455	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1456	}
1194		1457
1195	if (length < 0)	1458	if (len < 0)
1196	croak ("length must not be negative");	1459	croak ("length must not be negative");
1197		1460
1198	{	1461	{
1199	dREQ;	1462	dREQ;
1200		1463
1201	req->type = ix;	1464	req->type = ix;
1202	req->fh = newSVsv (fh);	1465	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	1467	: IoOFP (sv_2io (fh)));
		1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1469	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1470	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1471	req->ptr1 = (char *)svptr + dataoffset;
		1472	req->stroffset = dataoffset;
1209		1473
1210	if (!SvREADONLY (data))	1474	if (!SvREADONLY (data))
1211	{	1475	{
1212	SvREADONLY_on (data);	1476	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1477	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1478	}
1215		1479
1216	REQ_SEND;	1480	REQ_SEND;
1217	}	1481	}
1218	}	1482	}
1219		1483
1220	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
1221	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)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	1506	PROTOTYPE: $$$$;$
1228	PPCODE:	1507	PPCODE:
1229	{	1508	{
1230	dREQ;	1509	dREQ;
1231		1510
1232	req->type = REQ_SENDFILE;	1511	req->type = REQ_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1512	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	1514	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	1516	req->offs = SvVAL64 (in_offset);
1238	req->length = length;	1517	req->size = length;
1239		1518
1240	REQ_SEND;	1519	REQ_SEND;
1241	}	1520	}
1242		1521
1243	void	1522	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	1524	PROTOTYPE: $$$;$
1250	PPCODE:	1525	PPCODE:
1251	{	1526	{
1252	dREQ;	1527	dREQ;
1253		1528
1254	req->type = REQ_READAHEAD;	1529	req->type = REQ_READAHEAD;
1255	req->fh = newSVsv (fh);	1530	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	1532	req->offs = SvVAL64 (offset);
1258	req->length = length;	1533	req->size = length;
1259		1534
1260	REQ_SEND;	1535	REQ_SEND;
1261	}	1536	}
1262		1537
1263	void	1538	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1540	ALIAS:
1268	aio_stat = REQ_STAT	1541	aio_stat = REQ_STAT
1269	aio_lstat = REQ_LSTAT	1542	aio_lstat = REQ_LSTAT
1270	PPCODE:	1543	PPCODE:
1271	{	1544	{
1272	dREQ;	1545	dREQ;
1273		1546
1274	New (0, req->statdata, 1, Stat_t);	1547	req->ptr2 = malloc (sizeof (Stat_t));
1275	if (!req->statdata)	1548	if (!req->ptr2)
1276	{	1549	{
1277	req_free (req);	1550	req_destroy (req);
1278	croak ("out of memory during aio_req->statdata allocation");	1551	croak ("out of memory during aio_stat statdata allocation");
1279	}	1552	}
		1553
		1554	req->flags |= FLAG_PTR2_FREE;
		1555	req->sv1 = newSVsv (fh_or_path);
1280		1556
1281	if (SvPOK (fh_or_path))	1557	if (SvPOK (fh_or_path))
1282	{	1558	{
1283	req->type = ix;	1559	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1561	}
1287	else	1562	else
1288	{	1563	{
1289	req->type = REQ_FSTAT;	1564	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1566	}
1293		1567
1294	REQ_SEND;	1568	REQ_SEND;
1295	}	1569	}
1296		1570
1297	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
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1644	ALIAS:
1302	aio_unlink = REQ_UNLINK	1645	aio_unlink = REQ_UNLINK
1303	aio_rmdir = REQ_RMDIR	1646	aio_rmdir = REQ_RMDIR
1304	aio_readdir = REQ_READDIR	1647	aio_readdir = REQ_READDIR
1305	PPCODE:	1648	PPCODE:
1306	{	1649	{
1307	dREQ;	1650	dREQ;
1308		1651
1309	req->type = ix;	1652	req->type = ix;
1310	req->data = newSVsv (pathname);	1653	req->sv1 = newSVsv (pathname);
1311	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;
1312		1664
		1665	req->type = REQ_MKDIR;
		1666	req->sv1 = newSVsv (pathname);
		1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1668	req->mode = mode;
		1669
1313	REQ_SEND;	1670	REQ_SEND;
1314	}	1671	}
1315		1672
1316	void	1673	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1675	ALIAS:
1322	aio_link = REQ_LINK	1676	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK	1677	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME	1678	aio_rename = REQ_RENAME
1325	PPCODE:	1679	PPCODE:
1326	{	1680	{
1327	dREQ;	1681	dREQ;
1328		1682
1329	req->type = ix;	1683	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1684	req->sv2 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1332	req->data = newSVsv (newpath);	1686	req->sv1 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1334		1688
1335	REQ_SEND;	1689	REQ_SEND;
1336	}	1690	}
1337		1691
1338	void	1692	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1694	PPCODE:
1343	{	1695	{
1344	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;
1345		1712
1346	req->type = REQ_BUSY;	1713	req->type = REQ_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	1714	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		1715
1350	REQ_SEND;	1716	REQ_SEND;
1351	}	1717	}
1352		1718
1353	void	1719	void
1354	aio_group (callback=&PL_sv_undef)	1720	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1721	PROTOTYPE: ;$
1357	PPCODE:	1722	PPCODE:
1358	{	1723	{
1359	dREQ;	1724	dREQ;
1360		1725
1361	req->type = REQ_GROUP;	1726	req->type = REQ_GROUP;
		1727
1362	req_send (req);	1728	req_send (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1730	}
1366		1731
1367	void	1732	void
1368	aio_nop (callback=&PL_sv_undef)	1733	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback
1370	PPCODE:	1734	PPCODE:
1371	{	1735	{
1372	dREQ;	1736	dREQ;
1373		1737
1374	req->type = REQ_NOP;	1738	req->type = REQ_NOP;
1375		1739
1376	REQ_SEND;	1740	REQ_SEND;
1377	}	1741	}
1378		1742
1379	void	1743	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1744	aioreq_pri (int pri = 0)
1381	CODE:	1745	PROTOTYPE: ;$
		1746	CODE:
		1747	RETVAL = next_pri - PRI_BIAS;
		1748	if (items > 0)
		1749	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1750	if (pri < PRI_MIN) pri = PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1751	if (pri > PRI_MAX) pri = PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1752	next_pri = pri + PRI_BIAS;
		1753	}
		1754	OUTPUT:
		1755	RETVAL
1385		1756
1386	void	1757	void
1387	aioreq_nice (int nice = 0)	1758	aioreq_nice (int nice = 0)
1388	CODE:	1759	CODE:
1389	nice = next_pri - nice;	1760	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1761	if (nice < PRI_MIN) nice = PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1762	if (nice > PRI_MAX) nice = PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1763	next_pri = nice + PRI_BIAS;
1393		1764
1394	void	1765	void
1395	flush ()	1766	flush ()
1396	PROTOTYPE:	1767	PROTOTYPE:
1397	CODE:	1768	CODE:
1398	while (nreqs)	1769	while (nreqs)
1399	{	1770	{
1400	poll_wait ();	1771	poll_wait ();
1401	poll_cb (0);	1772	poll_cb ();
1402	}	1773	}
1403		1774
1404	void	1775	int
1405	poll()	1776	poll()
1406	PROTOTYPE:	1777	PROTOTYPE:
1407	CODE:	1778	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1779	poll_wait ();
1411	poll_cb (0);	1780	RETVAL = poll_cb ();
1412	}	1781	OUTPUT:
		1782	RETVAL
1413		1783
1414	int	1784	int
1415	poll_fileno()	1785	poll_fileno()
1416	PROTOTYPE:	1786	PROTOTYPE:
1417	CODE:	1787	CODE:
…		…
1421		1791
1422	int	1792	int
1423	poll_cb(...)	1793	poll_cb(...)
1424	PROTOTYPE:	1794	PROTOTYPE:
1425	CODE:	1795	CODE:
1426	RETVAL = poll_cb (0);	1796	RETVAL = poll_cb ();
1427	OUTPUT:
1428	RETVAL
1429
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:	1797	OUTPUT:
1436	RETVAL	1798	RETVAL
1437		1799
1438	void	1800	void
1439	poll_wait()	1801	poll_wait()
1440	PROTOTYPE:	1802	PROTOTYPE:
1441	CODE:	1803	CODE:
1442	if (nreqs)
1443	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	}
1444		1842
1445	int	1843	int
1446	nreqs()	1844	nreqs()
1447	PROTOTYPE:	1845	PROTOTYPE:
1448	CODE:	1846	CODE:
1449	RETVAL = nreqs;	1847	RETVAL = nreqs;
1450	OUTPUT:	1848	OUTPUT:
1451	RETVAL	1849	RETVAL
1452		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
1453	PROTOTYPES: DISABLE	1877	PROTOTYPES: DISABLE
1454		1878
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1880
1457	void	1881	void
…		…
1472	PPCODE:	1896	PPCODE:
1473	{	1897	{
1474	int i;	1898	int i;
1475	aio_req req;	1899	aio_req req;
1476		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
1477	if (grp->fd == 2)	1904	if (grp->int1 == 2)
1478	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");
1479		1906
1480	for (i = 1; i < items; ++i )	1907	for (i = 1; i < items; ++i )
1481	{	1908	{
1482	if (GIMME_V != G_VOID)	1909	if (GIMME_V != G_VOID)
…		…
1484		1911
1485	req = SvAIO_REQ (ST (i));	1912	req = SvAIO_REQ (ST (i));
1486		1913
1487	if (req)	1914	if (req)
1488	{	1915	{
1489	++grp->length;	1916	++grp->size;
1490	req->grp = grp;	1917	req->grp = grp;
1491		1918
1492	req->grp_prev = 0;	1919	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;	1920	req->grp_next = grp->grp_first;
1494		1921
…		…
1508	void	1935	void
1509	result (aio_req grp, ...)	1936	result (aio_req grp, ...)
1510	CODE:	1937	CODE:
1511	{	1938	{
1512	int i;	1939	int i;
		1940	AV *av;
		1941
		1942	grp->errorno = errno;
		1943
1513	AV *av = newAV ();	1944	av = newAV ();
1514		1945
1515	for (i = 1; i < items; ++i )	1946	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1947	av_push (av, newSVsv (ST (i)));
1517		1948
1518	SvREFCNT_dec (grp->data);	1949	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1950	grp->sv1 = (SV *)av;
1520	}	1951	}
		1952
		1953	void
		1954	errno (aio_req grp, int errorno = errno)
		1955	CODE:
		1956	grp->errorno = errorno;
1521		1957
1522	void	1958	void
1523	limit (aio_req grp, int limit)	1959	limit (aio_req grp, int limit)
1524	CODE:	1960	CODE:
1525	grp->fd2 = limit;	1961	grp->int2 = limit;
1526	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1527		1963
1528	void	1964	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1965	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1966	CODE:
1531	{	1967	{
1532	SvREFCNT_dec (grp->fh2);	1968	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1969	grp->sv2 = newSVsv (callback);
1534		1970
1535	if (grp->fd2 <= 0)	1971	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1972	grp->int2 = 2;
1537		1973
1538	aio_grp_feed (grp);	1974	aio_grp_feed (grp);
1539	}	1975	}
1540		1976

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