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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "autoconf/config.h"
17		10
18	#include <pthread.h>
19
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>	14	#include <sys/time.h>
23	#include <sys/select.h>	15	#include <sys/select.h>
24	#include <sys/types.h>	16	#include <sys/types.h>
25	#include <sys/stat.h>	17	#include <sys/stat.h>
…		…
42	# else	34	# else
43	# error sendfile support requested but not available	35	# error sendfile support requested but not available
44	# endif	36	# endif
45	#endif	37	#endif
46		38
		39	/* number of seconds after which idle threads exit */
		40	#define IDLE_TIMEOUT 10
		41
47	/* used for struct dirent, AIX doesn't provide it */	42	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	43	#ifndef NAME_MAX
49	# define NAME_MAX 4096	44	# define NAME_MAX 4096
50	#endif	45	#endif
51		46
52	#if __ia64
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif
59
60	/* buffer size for various temporary buffers */	47	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	48	#define AIO_BUFSIZE 65536
62		49
63	#define dBUF \	50	#define dBUF \
		51	char *aio_buf; \
		52	LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		54	UNLOCK (wrklock); \
65	if (!aio_buf) \	55	if (!aio_buf) \
66	return -1;	56	return -1;
67		57
68	#define fBUF free (aio_buf)	58	typedef SV SV8; /* byte-sv, used for argument-checking */
69		59
70	enum {	60	enum {
71	REQ_QUIT,	61	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	62	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,	64	REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76	REQ_FSYNC, REQ_FDATASYNC,	66	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
78	REQ_READDIR,	68	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
80	REQ_GROUP, REQ_NOP,	70	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	71	REQ_BUSY,
82	};	72	};
83		73
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	74	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
86		76
87	typedef struct aio_cb	77	typedef struct aio_cb
88	{	78	{
89	struct aio_cb *volatile next;	79	struct aio_cb *volatile next;
90		80
91	SV *data, *callback;	81	SV *callback, *fh;
92	SV *fh, *fh2;	82	SV *sv1, *sv2;
93	void *dataptr, *data2ptr;	83	void *ptr1, *ptr2;
94	Stat_t *statdata;
95	off_t offset;	84	off_t offs;
96	size_t length;	85	size_t size;
97	ssize_t result;	86	ssize_t result;
98		87
99	STRLEN dataoffset;	88	STRLEN stroffset;
100	int type;	89	int type;
101	int fd, fd2;	90	int int1, int2;
102	int errorno;	91	int errorno;
103	mode_t mode; /* open */	92	mode_t mode; /* open */
104		93
105	unsigned char flags;	94	unsigned char flags;
106	unsigned char pri;	95	unsigned char pri;
…		…
108	SV *self; /* the perl counterpart of this request, if any */	97	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;	99	} aio_cb;
111		100
112	enum {	101	enum {
113	FLAG_CANCELLED = 0x01,	102	FLAG_CANCELLED = 0x01, /* request was cancelled */
		103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
114	};	105	};
115		106
116	typedef aio_cb *aio_req;	107	typedef aio_cb *aio_req;
117	typedef aio_cb *aio_req_ornot;	108	typedef aio_cb *aio_req_ornot;
118		109
…		…
123	DEFAULT_PRI = 0,	114	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,	115	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	117	};
127		118
		119	#define AIO_TICKS ((1000000 + 1023) >> 10)
		120
		121	static unsigned int max_poll_time = 0;
		122	static unsigned int max_poll_reqs = 0;
		123
		124	/* calculcate time difference in ~1/AIO_TICKS of a second */
		125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		126	{
		127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		129	}
		130
		131	static thread_t main_tid;
		132	static int main_sig;
		133	static int block_sig_level;
		134
		135	void block_sig ()
		136	{
		137	sigset_t ss;
		138
		139	if (block_sig_level++)
		140	return;
		141
		142	if (!main_sig)
		143	return;
		144
		145	sigemptyset (&ss);
		146	sigaddset (&ss, main_sig);
		147	pthread_sigmask (SIG_BLOCK, &ss, 0);
		148	}
		149
		150	void unblock_sig ()
		151	{
		152	sigset_t ss;
		153
		154	if (--block_sig_level)
		155	return;
		156
		157	if (!main_sig)
		158	return;
		159
		160	sigemptyset (&ss);
		161	sigaddset (&ss, main_sig);
		162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		163	}
		164
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		166
130	static int started, wanted;	167	static unsigned int started, idle, wanted;
131	static volatile int nreqs;	168
132	static int max_outstanding = 1<<30;	169	/* worker threads management */
		170	static mutex_t wrklock = MUTEX_INIT;
		171
		172	typedef struct worker {
		173	/* locked by wrklock */
		174	struct worker *prev, *next;
		175
		176	thread_t tid;
		177
		178	/* locked by reslock, reqlock or wrklock */
		179	aio_req req; /* currently processed request */
		180	void *dbuf;
		181	DIR *dirp;
		182	} worker;
		183
		184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		185
		186	static void worker_clear (worker *wrk)
		187	{
		188	if (wrk->dirp)
		189	{
		190	closedir (wrk->dirp);
		191	wrk->dirp = 0;
		192	}
		193
		194	if (wrk->dbuf)
		195	{
		196	free (wrk->dbuf);
		197	wrk->dbuf = 0;
		198	}
		199	}
		200
		201	static void worker_free (worker *wrk)
		202	{
		203	wrk->next->prev = wrk->prev;
		204	wrk->prev->next = wrk->next;
		205
		206	free (wrk);
		207	}
		208
		209	static volatile unsigned int nreqs, nready, npending;
		210	static volatile unsigned int max_idle = 4;
		211	static volatile unsigned int max_outstanding = 0xffffffff;
133	static int respipe [2];	212	static int respipe [2];
134		213
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	214	static mutex_t reslock = MUTEX_INIT;
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	215	static mutex_t reqlock = MUTEX_INIT;
		216	static cond_t reqwait = COND_INIT;
		217
		218	#if WORDACCESS_UNSAFE
		219
		220	static unsigned int get_nready ()
		221	{
		222	unsigned int retval;
		223
		224	LOCK (reqlock);
		225	retval = nready;
		226	UNLOCK (reqlock);
		227
		228	return retval;
		229	}
		230
		231	static unsigned int get_npending ()
		232	{
		233	unsigned int retval;
		234
		235	LOCK (reslock);
		236	retval = npending;
		237	UNLOCK (reslock);
		238
		239	return retval;
		240	}
		241
		242	static unsigned int get_nthreads ()
		243	{
		244	unsigned int retval;
		245
		246	LOCK (wrklock);
		247	retval = started;
		248	UNLOCK (wrklock);
		249
		250	return retval;
		251	}
		252
137	#else	253	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	254
		255	# define get_nready() nready
		256	# define get_npending() npending
		257	# define get_nthreads() started
		258
139	#endif	259	#endif
140
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
144		260
145	/*	261	/*
146	* a somewhat faster data structure might be nice, but	262	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	263	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	264	* per shift, the most expensive operation.
…		…
194	}	310	}
195		311
196	abort ();	312	abort ();
197	}	313	}
198		314
		315	static int poll_cb ();
199	static void req_invoke (aio_req req);	316	static int req_invoke (aio_req req);
200	static void req_free (aio_req req);	317	static void req_free (aio_req req);
		318	static void req_cancel (aio_req req);
201		319
202	/* must be called at most once */	320	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	321	static SV *req_sv (aio_req req, const char *klass)
204	{	322	{
205	if (!req->self)	323	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	341	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	342	}
225		343
226	static void aio_grp_feed (aio_req grp)	344	static void aio_grp_feed (aio_req grp)
227	{	345	{
		346	block_sig ();
		347
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
229	{	349	{
230	int old_len = grp->length;	350	int old_len = grp->size;
231		351
232	if (grp->fh2 && SvOK (grp->fh2))	352	if (grp->sv2 && SvOK (grp->sv2))
233	{	353	{
234	dSP;	354	dSP;
235		355
236	ENTER;	356	ENTER;
237	SAVETMPS;	357	SAVETMPS;
238	PUSHMARK (SP);	358	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	360	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	362	SPAGAIN;
243	FREETMPS;	363	FREETMPS;
244	LEAVE;	364	LEAVE;
245	}	365	}
246		366
247	/* stop if no progress has been made */	367	/* stop if no progress has been made */
248	if (old_len == grp->length)	368	if (old_len == grp->size)
249	{	369	{
250	SvREFCNT_dec (grp->fh2);	370	SvREFCNT_dec (grp->sv2);
251	grp->fh2 = 0;	371	grp->sv2 = 0;
252	break;	372	break;
253	}	373	}
254	}	374	}
		375
		376	unblock_sig ();
255	}	377	}
256		378
257	static void aio_grp_dec (aio_req grp)	379	static void aio_grp_dec (aio_req grp)
258	{	380	{
259	--grp->length;	381	--grp->size;
260		382
261	/* call feeder, if applicable */	383	/* call feeder, if applicable */
262	aio_grp_feed (grp);	384	aio_grp_feed (grp);
263		385
264	/* finish, if done */	386	/* finish, if done */
265	if (!grp->length && grp->fd)	387	if (!grp->size && grp->int1)
266	{	388	{
		389	block_sig ();
		390
267	req_invoke (grp);	391	if (!req_invoke (grp))
		392	{
		393	req_free (grp);
		394	unblock_sig ();
		395	croak (0);
		396	}
		397
268	req_free (grp);	398	req_free (grp);
		399	unblock_sig ();
269	}	400	}
270	}	401	}
271		402
272	static void poll_wait ()
273	{
274	fd_set rfd;
275
276	while (nreqs)
277	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)	403	static int req_invoke (aio_req req)
298	{	404	{
299	dSP;	405	dSP;
		406
		407	if (req->flags & FLAG_SV1_RO_OFF)
		408	SvREADONLY_off (req->sv1);
300		409
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	411	{
303	errno = req->errorno;
304
305	ENTER;	412	ENTER;
306	SAVETMPS;	413	SAVETMPS;
307	PUSHMARK (SP);	414	PUSHMARK (SP);
308	EXTEND (SP, 1);	415	EXTEND (SP, 1);
309		416
…		…
313	{	420	{
314	SV *rv = &PL_sv_undef;	421	SV *rv = &PL_sv_undef;
315		422
316	if (req->result >= 0)	423	if (req->result >= 0)
317	{	424	{
		425	int i;
318	char *buf = req->data2ptr;	426	char *buf = req->ptr2;
319	AV *av = newAV ();	427	AV *av = newAV ();
320		428
321	while (req->result)	429	av_extend (av, req->result - 1);
		430
		431	for (i = 0; i < req->result; ++i)
322	{	432	{
323	SV *sv = newSVpv (buf, 0);	433	SV *sv = newSVpv (buf, 0);
324		434
325	av_push (av, sv);	435	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	436	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	437	}
329		438
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	439	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	440	}
332		441
…		…
342	PUSHs (sv_2mortal (newSViv (req->result)));	451	PUSHs (sv_2mortal (newSViv (req->result)));
343	PUTBACK;	452	PUTBACK;
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345	SPAGAIN;	454	SPAGAIN;
346		455
347	fh = SvREFCNT_inc (POPs);	456	fh = POPs;
348
349	PUSHMARK (SP);	457	PUSHMARK (SP);
350	XPUSHs (sv_2mortal (fh));	458	XPUSHs (fh);
351	}	459	}
352	break;	460	break;
353		461
354	case REQ_GROUP:	462	case REQ_GROUP:
355	req->fd = 2; /* mark group as finished */	463	req->int1 = 2; /* mark group as finished */
356		464
357	if (req->data)	465	if (req->sv1)
358	{	466	{
359	int i;	467	int i;
360	AV *av = (AV *)req->data;	468	AV *av = (AV *)req->sv1;
361		469
362	EXTEND (SP, AvFILL (av) + 1);	470	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	471	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	472	PUSHs (*av_fetch (av, i, 0));
365	}	473	}
…		…
367		475
368	case REQ_NOP:	476	case REQ_NOP:
369	case REQ_BUSY:	477	case REQ_BUSY:
370	break;	478	break;
371		479
		480	case REQ_READLINK:
		481	if (req->result > 0)
		482	{
		483	SvCUR_set (req->sv1, req->result);
		484	*SvEND (req->sv1) = 0;
		485	PUSHs (req->sv1);
		486	}
		487	break;
		488
		489	case REQ_STAT:
		490	case REQ_LSTAT:
		491	case REQ_FSTAT:
		492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		493	PL_laststatval = req->result;
		494	PL_statcache = *(Stat_t *)(req->ptr2);
		495	PUSHs (sv_2mortal (newSViv (req->result)));
		496	break;
		497
		498	case REQ_READ:
		499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		500	*SvEND (req->sv1) = 0;
		501	PUSHs (sv_2mortal (newSViv (req->result)));
		502	break;
		503
372	default:	504	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	505	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	506	break;
375	}	507	}
376		508
		509	errno = req->errorno;
377		510
378	PUTBACK;	511	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	512	call_sv (req->callback, G_VOID | G_EVAL);
380	SPAGAIN;	513	SPAGAIN;
381		514
…		…
395	grp->grp_first = req->grp_next;	528	grp->grp_first = req->grp_next;
396		529
397	aio_grp_dec (grp);	530	aio_grp_dec (grp);
398	}	531	}
399		532
400	if (SvTRUE (ERRSV))	533	return !SvTRUE (ERRSV);
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	534	}
406		535
407	static void req_free (aio_req req)	536	static void req_free (aio_req req)
408	{	537	{
409	if (req->self)	538	if (req->self)
410	{	539	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
413	}	542	}
414		543
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420		548
421	if (req->type == REQ_READDIR && req->result >= 0)	549	if (req->flags & FLAG_PTR2_FREE)
422	free (req->data2ptr);	550	free (req->ptr2);
423		551
424	Safefree (req);	552	Safefree (req);
425	}	553	}
426		554
		555	static void req_cancel_subs (aio_req grp)
		556	{
		557	aio_req sub;
		558
		559	if (grp->type != REQ_GROUP)
		560	return;
		561
		562	SvREFCNT_dec (grp->sv2);
		563	grp->sv2 = 0;
		564
		565	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		566	req_cancel (sub);
		567	}
		568
427	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
428	{	570	{
429	req->flags |= FLAG_CANCELLED;	571	req->flags |= FLAG_CANCELLED;
430		572
431	if (req->type == REQ_GROUP)	573	req_cancel_subs (req);
		574	}
		575
		576	static void *aio_proc(void *arg);
		577
		578	static void start_thread (void)
		579	{
		580	worker *wrk = calloc (1, sizeof (worker));
		581
		582	if (!wrk)
		583	croak ("unable to allocate worker thread data");
		584
		585	LOCK (wrklock);
		586
		587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
432	{	588	{
433	aio_req sub;	589	wrk->prev = &wrk_first;
		590	wrk->next = wrk_first.next;
		591	wrk_first.next->prev = wrk;
		592	wrk_first.next = wrk;
		593	++started;
		594	}
		595	else
		596	free (wrk);
434		597
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	598	UNLOCK (wrklock);
436	req_cancel (sub);	599	}
		600
		601	static void maybe_start_thread ()
		602	{
		603	if (get_nthreads () >= wanted)
		604	return;
		605
		606	/* todo: maybe use idle here, but might be less exact */
		607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		608	return;
		609
		610	start_thread ();
		611	}
		612
		613	static void req_send (aio_req req)
		614	{
		615	block_sig ();
		616
		617	++nreqs;
		618
		619	LOCK (reqlock);
		620	++nready;
		621	reqq_push (&req_queue, req);
		622	COND_SIGNAL (reqwait);
		623	UNLOCK (reqlock);
		624
		625	unblock_sig ();
		626
		627	maybe_start_thread ();
		628	}
		629
		630	static void end_thread (void)
		631	{
		632	aio_req req;
		633
		634	Newz (0, req, 1, aio_cb);
		635
		636	req->type = REQ_QUIT;
		637	req->pri = PRI_MAX + PRI_BIAS;
		638
		639	LOCK (reqlock);
		640	reqq_push (&req_queue, req);
		641	COND_SIGNAL (reqwait);
		642	UNLOCK (reqlock);
		643
		644	LOCK (wrklock);
		645	--started;
		646	UNLOCK (wrklock);
		647	}
		648
		649	static void set_max_idle (int nthreads)
		650	{
		651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		652	max_idle = nthreads <= 0 ? 1 : nthreads;
		653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		654	}
		655
		656	static void min_parallel (int nthreads)
		657	{
		658	if (wanted < nthreads)
		659	wanted = nthreads;
		660	}
		661
		662	static void max_parallel (int nthreads)
		663	{
		664	if (wanted > nthreads)
		665	wanted = nthreads;
		666
		667	while (started > wanted)
		668	end_thread ();
		669	}
		670
		671	static void poll_wait ()
		672	{
		673	fd_set rfd;
		674
		675	while (nreqs)
		676	{
		677	int size;
		678	if (WORDACCESS_UNSAFE) LOCK (reslock);
		679	size = res_queue.size;
		680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		681
		682	if (size)
		683	return;
		684
		685	maybe_start_thread ();
		686
		687	FD_ZERO(&rfd);
		688	FD_SET(respipe [0], &rfd);
		689
		690	select (respipe [0] + 1, &rfd, 0, 0, 0);
437	}	691	}
438	}	692	}
439		693
440	static int poll_cb ()	694	static int poll_cb ()
441	{	695	{
442	dSP;	696	dSP;
443	int count = 0;	697	int count = 0;
		698	int maxreqs = max_poll_reqs;
444	int do_croak = 0;	699	int do_croak = 0;
		700	struct timeval tv_start, tv_now;
445	aio_req req;	701	aio_req req;
		702
		703	if (max_poll_time)
		704	gettimeofday (&tv_start, 0);
		705
		706	block_sig ();
446		707
447	for (;;)	708	for (;;)
448	{	709	{
449	pthread_mutex_lock (&reslock);	710	for (;;)
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{	711	{
		712	maybe_start_thread ();
		713
		714	LOCK (reslock);
		715	req = reqq_shift (&res_queue);
		716
454	if (!res_queue.size)	717	if (req)
455	{	718	{
		719	--npending;
		720
		721	if (!res_queue.size)
		722	{
456	/* read any signals sent by the worker threads */	723	/* read any signals sent by the worker threads */
457	char buf [32];	724	char buf [4];
458	while (read (respipe [0], buf, 32) == 32)	725	while (read (respipe [0], buf, 4) == 4)
		726	;
459	;	727	}
		728	}
		729
		730	UNLOCK (reslock);
		731
		732	if (!req)
		733	break;
		734
		735	--nreqs;
		736
		737	if (req->type == REQ_GROUP && req->size)
		738	{
		739	req->int1 = 1; /* mark request as delayed */
		740	continue;
		741	}
		742	else
		743	{
		744	if (!req_invoke (req))
		745	{
		746	req_free (req);
		747	unblock_sig ();
		748	croak (0);
		749	}
		750
		751	count++;
		752	}
		753
		754	req_free (req);
		755
		756	if (maxreqs && !--maxreqs)
		757	break;
		758
		759	if (max_poll_time)
		760	{
		761	gettimeofday (&tv_now, 0);
		762
		763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		764	break;
460	}	765	}
461	}	766	}
462		767
463	pthread_mutex_unlock (&reslock);	768	if (nreqs <= max_outstanding)
464
465	if (!req)
466	break;	769	break;
467		770
468	--nreqs;	771	poll_wait ();
469		772
470	if (req->type == REQ_QUIT)	773	++maxreqs;
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	774	}
499		775
		776	unblock_sig ();
500	return count;	777	return count;
501	}
502
503	static void *aio_proc(void *arg);
504
505	static void start_thread (void)
506	{
507	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;
510
511	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}	778	}
585		779
586	static void create_pipe ()	780	static void create_pipe ()
587	{	781	{
588	if (pipe (respipe))	782	if (pipe (respipe))
…		…
605	/*	799	/*
606	* make our pread/pwrite safe against themselves, but not against	800	* make our pread/pwrite safe against themselves, but not against
607	* normal read/write by using a mutex. slows down execution a lot,	801	* normal read/write by using a mutex. slows down execution a lot,
608	* but that's your problem, not mine.	802	* but that's your problem, not mine.
609	*/	803	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	804	static mutex_t preadwritelock = MUTEX_INIT;
611		805
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{	807	{
614	ssize_t res;	808	ssize_t res;
615	off_t ooffset;	809	off_t ooffset;
616		810
617	pthread_mutex_lock (&preadwritelock);	811	LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	812	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	813	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	814	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	815	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	816	UNLOCK (preadwritelock);
623		817
624	return res;	818	return res;
625	}	819	}
626		820
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{	822	{
629	ssize_t res;	823	ssize_t res;
630	off_t ooffset;	824	off_t ooffset;
631		825
632	pthread_mutex_lock (&preadwritelock);	826	LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	827	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	828	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	829	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	830	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	831	UNLOCK (preadwritelock);
638		832
639	return res;	833	return res;
640	}	834	}
641	#endif	835	#endif
642		836
643	#if !HAVE_FDATASYNC	837	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	838	# define fdatasync fsync
645	#endif	839	#endif
646		840
647	#if !HAVE_READAHEAD	841	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		843
650	static ssize_t readahead (int fd, off_t offset, size_t count)	844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
651	{	845	{
652	dBUF;	846	dBUF;
653		847
654	while (count > 0)	848	while (count > 0)
655	{	849	{
…		…
658	pread (fd, aio_buf, len, offset);	852	pread (fd, aio_buf, len, offset);
659	offset += len;	853	offset += len;
660	count -= len;	854	count -= len;
661	}	855	}
662		856
663	fBUF;
664
665	errno = 0;	857	errno = 0;
666	}	858	}
		859
667	#endif	860	#endif
668		861
669	#if !HAVE_READDIR_R	862	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	863	# define readdir_r aio_readdir_r
671		864
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	865	static mutex_t readdirlock = MUTEX_INIT;
673		866
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{	868	{
676	struct dirent *e;	869	struct dirent *e;
677	int errorno;	870	int errorno;
678		871
679	pthread_mutex_lock (&readdirlock);	872	LOCK (readdirlock);
680		873
681	e = readdir (dirp);	874	e = readdir (dirp);
682	errorno = errno;	875	errorno = errno;
683		876
684	if (e)	877	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	880	strcpy (ent->d_name, e->d_name);
688	}	881	}
689	else	882	else
690	*res = 0;	883	*res = 0;
691		884
692	pthread_mutex_unlock (&readdirlock);	885	UNLOCK (readdirlock);
693		886
694	errno = errorno;	887	errno = errorno;
695	return e ? 0 : -1;	888	return e ? 0 : -1;
696	}	889	}
697	#endif	890	#endif
698		891
699	/* sendfile always needs emulation */	892	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
701	{	894	{
702	ssize_t res;	895	ssize_t res;
703		896
704	if (!count)	897	if (!count)
705	return 0;	898	return 0;
…		…
716	{	909	{
717	off_t sbytes;	910	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		912
720	if (res < 0 && sbytes)	913	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	915	res = sbytes;
723	}	916	}
724		917
725	# elif __hpux	918	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	919	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		975
783	offset += cnt;	976	offset += cnt;
784	res += cnt;	977	res += cnt;
785	count -= cnt;	978	count -= cnt;
786	}	979	}
787
788	fBUF;
789	}	980	}
790		981
791	return res;	982	return res;
792	}	983	}
793		984
794	/* read a full directory */	985	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)	986	static void scandir_ (aio_req req, worker *self)
796	{	987	{
797	DIR *dirp;	988	DIR *dirp;
798	union	989	union
799	{	990	{
800	struct dirent d;	991	struct dirent d;
…		…
805	int memlen = 4096;	996	int memlen = 4096;
806	int memofs = 0;	997	int memofs = 0;
807	int res = 0;	998	int res = 0;
808	int errorno;	999	int errorno;
809		1000
810	dirp = opendir (path);	1001	LOCK (wrklock);
811	if (!dirp)	1002	self->dirp = dirp = opendir (req->ptr1);
812	return -1;
813
814	u = malloc (sizeof (*u));	1003	self->dbuf = u = malloc (sizeof (*u));
		1004	req->flags |= FLAG_PTR2_FREE;
815	names = malloc (memlen);	1005	req->ptr2 = names = malloc (memlen);
		1006	UNLOCK (wrklock);
816		1007
817	if (u && names)	1008	if (dirp && u && names)
818	for (;;)	1009	for (;;)
819	{	1010	{
820	errno = 0;	1011	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	1012	readdir_r (dirp, &u->d, &entp);
822		1013
…		…
832	res++;	1023	res++;
833		1024
834	while (memofs + len > memlen)	1025	while (memofs + len > memlen)
835	{	1026	{
836	memlen *= 2;	1027	memlen *= 2;
		1028	LOCK (wrklock);
837	names = realloc (names, memlen);	1029	req->ptr2 = names = realloc (names, memlen);
		1030	UNLOCK (wrklock);
		1031
838	if (!names)	1032	if (!names)
839	break;	1033	break;
840	}	1034	}
841		1035
842	memcpy (names + memofs, name, len);	1036	memcpy (names + memofs, name, len);
843	memofs += len;	1037	memofs += len;
844	}	1038	}
845	}	1039	}
846		1040
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)	1041	if (errno)
		1042	res = -1;
		1043
		1044	req->result = res;
		1045	}
		1046
		1047	/*****************************************************************************/
		1048
		1049	static void *aio_proc (void *thr_arg)
		1050	{
		1051	aio_req req;
		1052	struct timespec ts;
		1053	worker *self = (worker *)thr_arg;
		1054
		1055	/* try to distribute timeouts somewhat evenly */
		1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1057	* (1000000000UL / 1024UL);
		1058
		1059	for (;;)
852	{	1060	{
853	free (names);	1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
854	errno = errorno;
855	res = -1;
856	}
857		1062
858	*namesp = (void *)names;	1063	LOCK (reqlock);
859	return res;
860	}
861
862	/*****************************************************************************/
863
864	static void *aio_proc (void *thr_arg)
865	{
866	aio_req req;
867	int type;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872		1064
873	for (;;)	1065	for (;;)
874	{	1066	{
875	req = reqq_shift (&req_queue);	1067	self->req = req = reqq_shift (&req_queue);
876		1068
877	if (req)	1069	if (req)
878	break;	1070	break;
879		1071
880	pthread_cond_wait (&reqwait, &reqlock);	1072	++idle;
		1073
		1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1075	== ETIMEDOUT)
		1076	{
		1077	if (idle > max_idle)
		1078	{
		1079	--idle;
		1080	UNLOCK (reqlock);
		1081	LOCK (wrklock);
		1082	--started;
		1083	UNLOCK (wrklock);
		1084	goto quit;
		1085	}
		1086
		1087	/* we are allowed to idle, so do so without any timeout */
		1088	COND_WAIT (reqwait, reqlock);
		1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1090	}
		1091
		1092	--idle;
881	}	1093	}
882		1094
883	pthread_mutex_unlock (&reqlock);	1095	--nready;
		1096
		1097	UNLOCK (reqlock);
884		1098
885	errno = 0; /* strictly unnecessary */	1099	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1100
888	if (!(req->flags & FLAG_CANCELLED))	1101	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1102	switch (req->type)
890	{	1103	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
893		1106
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
896		1109
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
900		1113
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;	1115	case REQ_CLOSE: req->result = close (req->int1); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
908		1124
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1127	case REQ_READDIR: scandir_ (req, self); break;
912		1128
913	case REQ_BUSY:	1129	case REQ_BUSY:
914	{	1130	{
915	struct timeval tv;	1131	struct timeval tv;
916		1132
917	tv.tv_sec = req->fd;	1133	tv.tv_sec = req->int1;
918	tv.tv_usec = req->fd2;	1134	tv.tv_usec = req->int2;
919		1135
920	req->result = select (0, 0, 0, 0, &tv);	1136	req->result = select (0, 0, 0, 0, &tv);
921	}	1137	}
922		1138
923	case REQ_GROUP:	1139	case REQ_GROUP:
924	case REQ_NOP:	1140	case REQ_NOP:
		1141	break;
		1142
925	case REQ_QUIT:	1143	case REQ_QUIT:
926	break;	1144	goto quit;
927		1145
928	default:	1146	default:
929	req->result = ENOSYS;	1147	req->result = ENOSYS;
930	break;	1148	break;
931	}	1149	}
932		1150
933	req->errorno = errno;	1151	req->errorno = errno;
934		1152
935	pthread_mutex_lock (&reslock);	1153	LOCK (reslock);
		1154
		1155	++npending;
936		1156
937	if (!reqq_push (&res_queue, req))	1157	if (!reqq_push (&res_queue, req))
		1158	{
938	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
940		1161
941	pthread_mutex_unlock (&reslock);	1162	/* optionally signal the main thread asynchronously */
		1163	if (main_sig)
		1164	pthread_kill (main_tid, main_sig);
		1165	}
		1166
		1167	self->req = 0;
		1168	worker_clear (self);
		1169
		1170	UNLOCK (reslock);
942	}	1171	}
943	while (type != REQ_QUIT);	1172
		1173	quit:
		1174	LOCK (wrklock);
		1175	worker_free (self);
		1176	UNLOCK (wrklock);
944		1177
945	return 0;	1178	return 0;
946	}	1179	}
947		1180
948	/*****************************************************************************/	1181	/*****************************************************************************/
949		1182
950	static void atfork_prepare (void)	1183	static void atfork_prepare (void)
951	{	1184	{
952	pthread_mutex_lock (&reqlock);	1185	LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1186	LOCK (reqlock);
		1187	LOCK (reslock);
954	#if !HAVE_PREADWRITE	1188	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1189	LOCK (preadwritelock);
956	#endif	1190	#endif
957	#if !HAVE_READDIR_R	1191	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1192	LOCK (readdirlock);
959	#endif	1193	#endif
960	}	1194	}
961		1195
962	static void atfork_parent (void)	1196	static void atfork_parent (void)
963	{	1197	{
964	#if !HAVE_READDIR_R	1198	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1199	UNLOCK (readdirlock);
966	#endif	1200	#endif
967	#if !HAVE_PREADWRITE	1201	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1202	UNLOCK (preadwritelock);
969	#endif	1203	#endif
970	pthread_mutex_unlock (&reslock);	1204	UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1205	UNLOCK (reqlock);
		1206	UNLOCK (wrklock);
972	}	1207	}
973		1208
974	static void atfork_child (void)	1209	static void atfork_child (void)
975	{	1210	{
976	aio_req prv;	1211	aio_req prv;
977
978	started = 0;
979		1212
980	while (prv = reqq_shift (&req_queue))	1213	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1214	req_free (prv);
982		1215
983	while (prv = reqq_shift (&res_queue))	1216	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1217	req_free (prv);
985		1218
		1219	while (wrk_first.next != &wrk_first)
		1220	{
		1221	worker *wrk = wrk_first.next;
		1222
		1223	if (wrk->req)
		1224	req_free (wrk->req);
		1225
		1226	worker_clear (wrk);
		1227	worker_free (wrk);
		1228	}
		1229
		1230	started = 0;
		1231	idle = 0;
		1232	nreqs = 0;
		1233	nready = 0;
		1234	npending = 0;
		1235
986	close (respipe [0]);	1236	close (respipe [0]);
987	close (respipe [1]);	1237	close (respipe [1]);
988	create_pipe ();	1238	create_pipe ();
989		1239
990	atfork_parent ();	1240	atfork_parent ();
…		…
1016	PROTOTYPES: ENABLE	1266	PROTOTYPES: ENABLE
1017		1267
1018	BOOT:	1268	BOOT:
1019	{	1269	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1270	HV *stash = gv_stashpv ("IO::AIO", 1);
		1271
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1024		1279
1025	create_pipe ();	1280	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1027	}	1282	}
1028		1283
1029	void	1284	void
1030	min_parallel (nthreads)	1285	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	1286	PROTOTYPE: $
		1287	CODE:
		1288	max_poll_reqs = nreqs;
1033		1289
1034	void	1290	void
1035	max_parallel (nthreads)	1291	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	1292	PROTOTYPE: $
		1293	CODE:
		1294	max_poll_time = nseconds * AIO_TICKS;
		1295
		1296	void
		1297	min_parallel (int nthreads)
		1298	PROTOTYPE: $
		1299
		1300	void
		1301	max_parallel (int nthreads)
		1302	PROTOTYPE: $
		1303
		1304	void
		1305	max_idle (int nthreads)
		1306	PROTOTYPE: $
		1307	CODE:
		1308	set_max_idle (nthreads);
1038		1309
1039	int	1310	int
1040	max_outstanding (nreqs)	1311	max_outstanding (int maxreqs)
1041	int nreqs	1312	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1313	CODE:
1044	RETVAL = max_outstanding;	1314	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1315	max_outstanding = maxreqs;
		1316	OUTPUT:
		1317	RETVAL
1046		1318
1047	void	1319	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1049	SV * pathname	1321	SV8 * pathname
1050	int flags	1322	int flags
1051	int mode	1323	int mode
1052	SV * callback	1324	SV * callback
1053	PROTOTYPE: $$$;$	1325	PROTOTYPE: $$$;$
1054	PPCODE:	1326	PPCODE:
1055	{	1327	{
1056	dREQ;	1328	dREQ;
1057		1329
1058	req->type = REQ_OPEN;	1330	req->type = REQ_OPEN;
1059	req->data = newSVsv (pathname);	1331	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1332	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	1333	req->int1 = flags;
1062	req->mode = mode;	1334	req->mode = mode;
1063		1335
1064	REQ_SEND;	1336	REQ_SEND;
1065	}	1337	}
1066		1338
…		…
1076	PPCODE:	1348	PPCODE:
1077	{	1349	{
1078	dREQ;	1350	dREQ;
1079		1351
1080	req->type = ix;	1352	req->type = ix;
1081	req->fh = newSVsv (fh);	1353	req->fh = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083		1355
1084	REQ_SEND (req);	1356	REQ_SEND (req);
1085	}	1357	}
1086		1358
1087	void	1359	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1089	SV * fh	1361	SV * fh
1090	UV offset	1362	UV offset
1091	UV length	1363	UV length
1092	SV * data	1364	SV8 * data
1093	UV dataoffset	1365	UV dataoffset
1094	SV * callback	1366	SV * callback
1095	ALIAS:	1367	ALIAS:
1096	aio_read = REQ_READ	1368	aio_read = REQ_READ
1097	aio_write = REQ_WRITE	1369	aio_write = REQ_WRITE
1098	PROTOTYPE: $$$$$;$	1370	PROTOTYPE: $$$$$;$
1099	PPCODE:	1371	PPCODE:
1100	{	1372	{
1101	aio_req req;
1102	STRLEN svlen;	1373	STRLEN svlen;
1103	char *svptr = SvPVbyte (data, svlen);	1374	char *svptr = SvPVbyte (data, svlen);
1104		1375
1105	SvUPGRADE (data, SVt_PV);	1376	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);	1377	SvPOK_on (data);
…		…
1118	length = svlen - dataoffset;	1389	length = svlen - dataoffset;
1119	}	1390	}
1120	else	1391	else
1121	{	1392	{
1122	/* read: grow scalar as necessary */	1393	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, length + dataoffset);	1394	svptr = SvGROW (data, length + dataoffset + 1);
1124	}	1395	}
1125		1396
1126	if (length < 0)	1397	if (length < 0)
1127	croak ("length must not be negative");	1398	croak ("length must not be negative");
1128		1399
1129	{	1400	{
1130	dREQ;	1401	dREQ;
1131		1402
1132	req->type = ix;	1403	req->type = ix;
1133	req->fh = newSVsv (fh);	1404	req->fh = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));	1406	: IoOFP (sv_2io (fh)));
1136	req->offset = offset;	1407	req->offs = offset;
1137	req->length = length;	1408	req->size = length;
1138	req->data = SvREFCNT_inc (data);	1409	req->sv1 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1410	req->ptr1 = (char *)svptr + dataoffset;
		1411	req->stroffset = dataoffset;
1140		1412
1141	if (!SvREADONLY (data))	1413	if (!SvREADONLY (data))
1142	{	1414	{
1143	SvREADONLY_on (data);	1415	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1416	req->flags |= FLAG_SV1_RO_OFF;
1145	}	1417	}
1146		1418
1147	REQ_SEND;	1419	REQ_SEND;
1148	}	1420	}
		1421	}
		1422
		1423	void
		1424	aio_readlink (path,callback=&PL_sv_undef)
		1425	SV8 * path
		1426	SV * callback
		1427	PROTOTYPE: $$;$
		1428	PPCODE:
		1429	{
		1430	SV *data;
		1431	dREQ;
		1432
		1433	data = newSV (NAME_MAX);
		1434	SvPOK_on (data);
		1435
		1436	req->type = REQ_READLINK;
		1437	req->fh = newSVsv (path);
		1438	req->ptr2 = SvPVbyte_nolen (req->fh);
		1439	req->sv1 = data;
		1440	req->ptr1 = SvPVbyte_nolen (data);
		1441
		1442	REQ_SEND;
1149	}	1443	}
1150		1444
1151	void	1445	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1153	SV * out_fh	1447	SV * out_fh
…		…
1159	PPCODE:	1453	PPCODE:
1160	{	1454	{
1161	dREQ;	1455	dREQ;
1162		1456
1163	req->type = REQ_SENDFILE;	1457	req->type = REQ_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1458	req->fh = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166	req->fh2 = newSVsv (in_fh);	1460	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168	req->offset = in_offset;	1462	req->offs = in_offset;
1169	req->length = length;	1463	req->size = length;
1170		1464
1171	REQ_SEND;	1465	REQ_SEND;
1172	}	1466	}
1173		1467
1174	void	1468	void
…		…
1181	PPCODE:	1475	PPCODE:
1182	{	1476	{
1183	dREQ;	1477	dREQ;
1184		1478
1185	req->type = REQ_READAHEAD;	1479	req->type = REQ_READAHEAD;
1186	req->fh = newSVsv (fh);	1480	req->fh = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188	req->offset = offset;	1482	req->offs = offset;
1189	req->length = length;	1483	req->size = length;
1190		1484
1191	REQ_SEND;	1485	REQ_SEND;
1192	}	1486	}
1193		1487
1194	void	1488	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1489	aio_stat (fh_or_path,callback=&PL_sv_undef)
1196	SV * fh_or_path	1490	SV8 * fh_or_path
1197	SV * callback	1491	SV * callback
1198	ALIAS:	1492	ALIAS:
1199	aio_stat = REQ_STAT	1493	aio_stat = REQ_STAT
1200	aio_lstat = REQ_LSTAT	1494	aio_lstat = REQ_LSTAT
1201	PPCODE:	1495	PPCODE:
1202	{	1496	{
1203	dREQ;	1497	dREQ;
1204		1498
1205	New (0, req->statdata, 1, Stat_t);	1499	req->ptr2 = malloc (sizeof (Stat_t));
1206	if (!req->statdata)	1500	if (!req->ptr2)
1207	{	1501	{
1208	req_free (req);	1502	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");	1503	croak ("out of memory during aio_stat statdata allocation");
1210	}	1504	}
		1505
		1506	req->flags |= FLAG_PTR2_FREE;
1211		1507
1212	if (SvPOK (fh_or_path))	1508	if (SvPOK (fh_or_path))
1213	{	1509	{
1214	req->type = ix;	1510	req->type = ix;
1215	req->data = newSVsv (fh_or_path);	1511	req->sv1 = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1512	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1513	}
1218	else	1514	else
1219	{	1515	{
1220	req->type = REQ_FSTAT;	1516	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);	1517	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1519	}
1224		1520
1225	REQ_SEND;	1521	REQ_SEND;
1226	}	1522	}
1227		1523
1228	void	1524	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1525	aio_unlink (pathname,callback=&PL_sv_undef)
1230	SV * pathname	1526	SV8 * pathname
1231	SV * callback	1527	SV * callback
1232	ALIAS:	1528	ALIAS:
1233	aio_unlink = REQ_UNLINK	1529	aio_unlink = REQ_UNLINK
1234	aio_rmdir = REQ_RMDIR	1530	aio_rmdir = REQ_RMDIR
1235	aio_readdir = REQ_READDIR	1531	aio_readdir = REQ_READDIR
1236	PPCODE:	1532	PPCODE:
1237	{	1533	{
1238	dREQ;	1534	dREQ;
1239		1535
1240	req->type = ix;	1536	req->type = ix;
1241	req->data = newSVsv (pathname);	1537	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1538	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
		1545	SV8 * pathname
		1546	UV mode
		1547	SV * callback
		1548	PPCODE:
		1549	{
		1550	dREQ;
1243		1551
		1552	req->type = REQ_MKDIR;
		1553	req->sv1 = newSVsv (pathname);
		1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1555	req->mode = mode;
		1556
1244	REQ_SEND;	1557	REQ_SEND;
1245	}	1558	}
1246		1559
1247	void	1560	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1249	SV * oldpath	1562	SV8 * oldpath
1250	SV * newpath	1563	SV8 * newpath
1251	SV * callback	1564	SV * callback
1252	ALIAS:	1565	ALIAS:
1253	aio_link = REQ_LINK	1566	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK	1567	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME	1568	aio_rename = REQ_RENAME
1256	PPCODE:	1569	PPCODE:
1257	{	1570	{
1258	dREQ;	1571	dREQ;
1259		1572
1260	req->type = ix;	1573	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1574	req->fh = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1263	req->data = newSVsv (newpath);	1576	req->sv1 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1577	req->ptr1 = SvPVbyte_nolen (req->sv1);
1265		1578
1266	REQ_SEND;	1579	REQ_SEND;
1267	}	1580	}
1268		1581
1269	void	1582	void
		1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1584	SV8 * pathname
		1585	UV mode
		1586	UV dev
		1587	SV * callback
		1588	PPCODE:
		1589	{
		1590	dREQ;
		1591
		1592	req->type = REQ_MKNOD;
		1593	req->sv1 = newSVsv (pathname);
		1594	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1595	req->mode = (mode_t)mode;
		1596	req->offs = dev;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1602	aio_busy (delay,callback=&PL_sv_undef)
1271	double delay	1603	double delay
1272	SV * callback	1604	SV * callback
1273	PPCODE:	1605	PPCODE:
1274	{	1606	{
1275	dREQ;	1607	dREQ;
1276		1608
1277	req->type = REQ_BUSY;	1609	req->type = REQ_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1610	req->int1 = delay < 0. ? 0 : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1280		1612
1281	REQ_SEND;	1613	REQ_SEND;
1282	}	1614	}
1283		1615
1284	void	1616	void
…		…
1288	PPCODE:	1620	PPCODE:
1289	{	1621	{
1290	dREQ;	1622	dREQ;
1291		1623
1292	req->type = REQ_GROUP;	1624	req->type = REQ_GROUP;
		1625
1293	req_send (req);	1626	req_send (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1628	}
1297		1629
1298	void	1630	void
1299	aio_nop (callback=&PL_sv_undef)	1631	aio_nop (callback=&PL_sv_undef)
1300	SV * callback	1632	SV * callback
1301	PPCODE:	1633	PPCODE:
1302	{	1634	{
1303	dREQ;	1635	dREQ;
1304		1636
1305	req->type = REQ_NOP;	1637	req->type = REQ_NOP;
1306		1638
1307	REQ_SEND;	1639	REQ_SEND;
1308	}	1640	}
1309		1641
1310	void	1642	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1643	aioreq_pri (int pri = 0)
1312	CODE:	1644	PROTOTYPE: ;$
		1645	CODE:
		1646	RETVAL = next_pri - PRI_BIAS;
		1647	if (items > 0)
		1648	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1649	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1650	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1651	next_pri = pri + PRI_BIAS;
		1652	}
		1653	OUTPUT:
		1654	RETVAL
1316		1655
1317	void	1656	void
1318	aioreq_nice (int nice = 0)	1657	aioreq_nice (int nice = 0)
1319	CODE:	1658	CODE:
1320	nice = next_pri - nice;	1659	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1660	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1661	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1662	next_pri = nice + PRI_BIAS;
1324		1663
1325	void	1664	void
1326	flush ()	1665	flush ()
1327	PROTOTYPE:	1666	PROTOTYPE:
1328	CODE:	1667	CODE:
…		…
1330	{	1669	{
1331	poll_wait ();	1670	poll_wait ();
1332	poll_cb ();	1671	poll_cb ();
1333	}	1672	}
1334		1673
1335	void	1674	int
1336	poll()	1675	poll()
1337	PROTOTYPE:	1676	PROTOTYPE:
1338	CODE:	1677	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1678	poll_wait ();
1342	poll_cb ();	1679	RETVAL = poll_cb ();
1343	}	1680	OUTPUT:
		1681	RETVAL
1344		1682
1345	int	1683	int
1346	poll_fileno()	1684	poll_fileno()
1347	PROTOTYPE:	1685	PROTOTYPE:
1348	CODE:	1686	CODE:
…		…
1360		1698
1361	void	1699	void
1362	poll_wait()	1700	poll_wait()
1363	PROTOTYPE:	1701	PROTOTYPE:
1364	CODE:	1702	CODE:
1365	if (nreqs)
1366	poll_wait ();	1703	poll_wait ();
		1704
		1705	void
		1706	setsig (int signum = SIGIO)
		1707	PROTOTYPE: ;$
		1708	CODE:
		1709	{
		1710	if (block_sig_level)
		1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1712
		1713	LOCK (reslock);
		1714	main_tid = pthread_self ();
		1715	main_sig = signum;
		1716	UNLOCK (reslock);
		1717
		1718	if (main_sig && npending)
		1719	pthread_kill (main_tid, main_sig);
		1720	}
		1721
		1722	void
		1723	aio_block (SV *cb)
		1724	PROTOTYPE: &
		1725	PPCODE:
		1726	{
		1727	int count;
		1728
		1729	block_sig ();
		1730	PUSHMARK (SP);
		1731	PUTBACK;
		1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1733	SPAGAIN;
		1734	unblock_sig ();
		1735
		1736	if (SvTRUE (ERRSV))
		1737	croak (0);
		1738
		1739	XSRETURN (count);
		1740	}
1367		1741
1368	int	1742	int
1369	nreqs()	1743	nreqs()
1370	PROTOTYPE:	1744	PROTOTYPE:
1371	CODE:	1745	CODE:
1372	RETVAL = nreqs;	1746	RETVAL = nreqs;
1373	OUTPUT:	1747	OUTPUT:
1374	RETVAL	1748	RETVAL
1375		1749
		1750	int
		1751	nready()
		1752	PROTOTYPE:
		1753	CODE:
		1754	RETVAL = get_nready ();
		1755	OUTPUT:
		1756	RETVAL
		1757
		1758	int
		1759	npending()
		1760	PROTOTYPE:
		1761	CODE:
		1762	RETVAL = get_npending ();
		1763	OUTPUT:
		1764	RETVAL
		1765
		1766	int
		1767	nthreads()
		1768	PROTOTYPE:
		1769	CODE:
		1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1771	RETVAL = started;
		1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1773	OUTPUT:
		1774	RETVAL
		1775
1376	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1377		1777
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1779
1380	void	1780	void
…		…
1395	PPCODE:	1795	PPCODE:
1396	{	1796	{
1397	int i;	1797	int i;
1398	aio_req req;	1798	aio_req req;
1399		1799
		1800	if (main_sig && !block_sig_level)
		1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1802
1400	if (grp->fd == 2)	1803	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1805
1403	for (i = 1; i < items; ++i )	1806	for (i = 1; i < items; ++i )
1404	{	1807	{
1405	if (GIMME_V != G_VOID)	1808	if (GIMME_V != G_VOID)
…		…
1407		1810
1408	req = SvAIO_REQ (ST (i));	1811	req = SvAIO_REQ (ST (i));
1409		1812
1410	if (req)	1813	if (req)
1411	{	1814	{
1412	++grp->length;	1815	++grp->size;
1413	req->grp = grp;	1816	req->grp = grp;
1414		1817
1415	req->grp_prev = 0;	1818	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;	1819	req->grp_next = grp->grp_first;
1417		1820
…		…
1422	}	1825	}
1423	}	1826	}
1424	}	1827	}
1425		1828
1426	void	1829	void
		1830	cancel_subs (aio_req_ornot req)
		1831	CODE:
		1832	req_cancel_subs (req);
		1833
		1834	void
1427	result (aio_req grp, ...)	1835	result (aio_req grp, ...)
1428	CODE:	1836	CODE:
1429	{	1837	{
1430	int i;	1838	int i;
		1839	AV *av;
		1840
		1841	grp->errorno = errno;
		1842
1431	AV *av = newAV ();	1843	av = newAV ();
1432		1844
1433	for (i = 1; i < items; ++i )	1845	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1846	av_push (av, newSVsv (ST (i)));
1435		1847
1436	SvREFCNT_dec (grp->data);	1848	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1849	grp->sv1 = (SV *)av;
1438	}	1850	}
		1851
		1852	void
		1853	errno (aio_req grp, int errorno = errno)
		1854	CODE:
		1855	grp->errorno = errorno;
1439		1856
1440	void	1857	void
1441	limit (aio_req grp, int limit)	1858	limit (aio_req grp, int limit)
1442	CODE:	1859	CODE:
1443	grp->fd2 = limit;	1860	grp->int2 = limit;
1444	aio_grp_feed (grp);	1861	aio_grp_feed (grp);
1445		1862
1446	void	1863	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1864	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1865	CODE:
1449	{	1866	{
1450	SvREFCNT_dec (grp->fh2);	1867	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1868	grp->sv2 = newSVsv (callback);
1452		1869
1453	if (grp->fd2 <= 0)	1870	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1871	grp->int2 = 2;
1455		1872
1456	aio_grp_feed (grp);	1873	aio_grp_feed (grp);
1457	}	1874	}
1458		1875

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