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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC

1	#if __linux	1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
2	# define _GNU_SOURCE	5	# define _GNU_SOURCE
3	#endif	6	#endif
4		7
		8	/* just in case */
5	#define _REENTRANT 1	9	#define _REENTRANT 1
6		10
7	#include <errno.h>	11	#include <errno.h>
8		12
9	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
39	# else	43	# else
40	# error sendfile support requested but not available	44	# error sendfile support requested but not available
41	# endif	45	# endif
42	#endif	46	#endif
43		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
44	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	52	#ifndef NAME_MAX
46	# define NAME_MAX 4096	53	# define NAME_MAX 4096
		54	#endif
		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
47	#endif	59	#endif
48		60
49	#if __ia64	61	#if __ia64
50	# define STACKSIZE 65536	62	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN	64	# define STACKSIZE PTHREAD_STACK_MIN
53	#else	65	#else
54	# define STACKSIZE 16384	66	# define STACKSIZE 16384
55	#endif	67	#endif
56		68
		69	/* wether word reads are potentially non-atomic.
		70	* this is conservatice, likely most arches this runs
		71	* on have atomic word read/writes.
		72	*/
		73	#ifndef WORDACCESS_UNSAFE
		74	# if __i386 || __x86_64
		75	# define WORDACCESS_UNSAFE 0
		76	# else
		77	# define WORDACCESS_UNSAFE 1
		78	# endif
		79	#endif
		80
57	/* buffer size for various temporary buffers */	81	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	82	#define AIO_BUFSIZE 65536
59		83
60	#define dBUF \	84	#define dBUF \
		85	char *aio_buf; \
		86	LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		88	UNLOCK (wrklock); \
62	if (!aio_buf) \	89	if (!aio_buf) \
63	return -1;	90	return -1;
64		91
65	#define fBUF free (aio_buf)	92	typedef SV SV8; /* byte-sv, used for argument-checking */
66		93
67	enum {	94	enum {
68	REQ_QUIT,	95	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	96	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,	98	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,	100	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,	102	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	104	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	105	REQ_BUSY,
79	};	106	};
80		107
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	108	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	109	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		110
84	typedef struct aio_cb	111	typedef struct aio_cb
85	{	112	{
86	struct aio_cb *volatile next;	113	struct aio_cb *volatile next;
87		114
88	SV *data, *callback;	115	SV *callback, *fh;
89	SV *fh, *fh2;	116	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	117	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	118	off_t offs;
93	size_t length;	119	size_t size;
94	ssize_t result;	120	ssize_t result;
95		121
96	STRLEN dataoffset;	122	STRLEN stroffset;
97	int type;	123	int type;
98	int fd, fd2;	124	int int1, int2;
99	int errorno;	125	int errorno;
100	mode_t mode; /* open */	126	mode_t mode; /* open */
101		127
102	unsigned char flags;	128	unsigned char flags;
103	unsigned char pri;	129	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	131	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	133	} aio_cb;
108		134
109	enum {	135	enum {
110	FLAG_CANCELLED = 0x01,	136	FLAG_CANCELLED = 0x01, /* request was cancelled */
		137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
111	};	139	};
112		140
113	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
115		143
…		…
117	PRI_MIN = -4,	145	PRI_MIN = -4,
118	PRI_MAX = 4,	146	PRI_MAX = 4,
119		147
120	DEFAULT_PRI = 0,	148	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	149	PRI_BIAS = -PRI_MIN,
		150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};	151	};
123		152
		153	#define AIO_TICKS ((1000000 + 1023) >> 10)
		154
		155	static unsigned int max_poll_time = 0;
		156	static unsigned int max_poll_reqs = 0;
		157
		158	/* calculcate time difference in ~1/AIO_TICKS of a second */
		159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		160	{
		161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		163	}
		164
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;	165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125		166
126	static int started, wanted;	167	static unsigned int started, idle, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;
129	static int respipe [2];
130		168
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else	171	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif	173	#endif
136		174
		175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		177
		178	/* worker threads management */
		179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		180
		181	typedef struct worker {
		182	/* locked by wrklock */
		183	struct worker *prev, *next;
		184
		185	pthread_t tid;
		186
		187	/* locked by reslock, reqlock or wrklock */
		188	aio_req req; /* currently processed request */
		189	void *dbuf;
		190	DIR *dirp;
		191	} worker;
		192
		193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		194
		195	static void worker_clear (worker *wrk)
		196	{
		197	if (wrk->dirp)
		198	{
		199	closedir (wrk->dirp);
		200	wrk->dirp = 0;
		201	}
		202
		203	if (wrk->dbuf)
		204	{
		205	free (wrk->dbuf);
		206	wrk->dbuf = 0;
		207	}
		208	}
		209
		210	static void worker_free (worker *wrk)
		211	{
		212	wrk->next->prev = wrk->prev;
		213	wrk->prev->next = wrk->next;
		214
		215	free (wrk);
		216	}
		217
		218	static volatile unsigned int nreqs, nready, npending;
		219	static volatile unsigned int max_idle = 4;
		220	static volatile unsigned int max_outstanding = 0xffffffff;
		221	static int respipe [2];
		222
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140		226
141	static volatile aio_req reqs, reqe; /* queue start, queue end */	227	#if WORDACCESS_UNSAFE
142	static volatile aio_req ress, rese; /* queue start, queue end */
143		228
		229	static unsigned int get_nready ()
		230	{
		231	unsigned int retval;
		232
		233	LOCK (reqlock);
		234	retval = nready;
		235	UNLOCK (reqlock);
		236
		237	return retval;
		238	}
		239
		240	static unsigned int get_npending ()
		241	{
		242	unsigned int retval;
		243
		244	LOCK (reslock);
		245	retval = npending;
		246	UNLOCK (reslock);
		247
		248	return retval;
		249	}
		250
		251	static unsigned int get_nthreads ()
		252	{
		253	unsigned int retval;
		254
		255	LOCK (wrklock);
		256	retval = started;
		257	UNLOCK (wrklock);
		258
		259	return retval;
		260	}
		261
		262	#else
		263
		264	# define get_nready() nready
		265	# define get_npending() npending
		266	# define get_nthreads() started
		267
		268	#endif
		269
		270	/*
		271	* a somewhat faster data structure might be nice, but
		272	* with 8 priorities this actually needs <20 insns
		273	* per shift, the most expensive operation.
		274	*/
		275	typedef struct {
		276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		277	int size;
		278	} reqq;
		279
		280	static reqq req_queue;
		281	static reqq res_queue;
		282
		283	int reqq_push (reqq *q, aio_req req)
		284	{
		285	int pri = req->pri;
		286	req->next = 0;
		287
		288	if (q->qe[pri])
		289	{
		290	q->qe[pri]->next = req;
		291	q->qe[pri] = req;
		292	}
		293	else
		294	q->qe[pri] = q->qs[pri] = req;
		295
		296	return q->size++;
		297	}
		298
		299	aio_req reqq_shift (reqq *q)
		300	{
		301	int pri;
		302
		303	if (!q->size)
		304	return 0;
		305
		306	--q->size;
		307
		308	for (pri = NUM_PRI; pri--; )
		309	{
		310	aio_req req = q->qs[pri];
		311
		312	if (req)
		313	{
		314	if (!(q->qs[pri] = req->next))
		315	q->qe[pri] = 0;
		316
		317	return req;
		318	}
		319	}
		320
		321	abort ();
		322	}
		323
		324	static int poll_cb ();
144	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
145	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
146		328
147	/* must be called at most once */	329	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
149	{	331	{
150	if (!req->self)	332	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	351	}
170		352
171	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
172	{	354	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
174	{	356	{
175	int old_len = grp->length;	357	int old_len = grp->size;
176		358
177	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
178	{	360	{
179	dSP;	361	dSP;
180		362
181	ENTER;	363	ENTER;
182	SAVETMPS;	364	SAVETMPS;
183	PUSHMARK (SP);	365	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185	PUTBACK;	367	PUTBACK;
186	call_sv (grp->fh2, G_VOID | G_EVAL);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	369	SPAGAIN;
188	FREETMPS;	370	FREETMPS;
189	LEAVE;	371	LEAVE;
190	}	372	}
191		373
192	/* stop if no progress has been made */	374	/* stop if no progress has been made */
193	if (old_len == grp->length)	375	if (old_len == grp->size)
194	{	376	{
195	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
196	grp->fh2 = 0;	378	grp->sv2 = 0;
197	break;	379	break;
198	}	380	}
199	}	381	}
200	}	382	}
201		383
202	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
203	{	385	{
204	--grp->length;	386	--grp->size;
205		387
206	/* call feeder, if applicable */	388	/* call feeder, if applicable */
207	aio_grp_feed (grp);	389	aio_grp_feed (grp);
208		390
209	/* finish, if done */	391	/* finish, if done */
210	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
211	{	393	{
212	req_invoke (grp);	394	req_invoke (grp);
213	req_free (grp);	395	req_free (grp);
214	}	396	}
215	}	397	}
216		398
217	static void poll_wait ()	399	static void req_invoke (aio_req req)
218	{	400	{
219	fd_set rfd;	401	dSP;
220		402
221	while (nreqs)	403	if (req->flags & FLAG_SV1_RO_OFF)
		404	SvREADONLY_off (req->sv1);
		405
		406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
222	{	407	{
223	aio_req req;	408	ENTER;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */	409	SAVETMPS;
225	pthread_mutex_lock (&reslock);	410	PUSHMARK (SP);
226	#endif	411	EXTEND (SP, 1);
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231		412
232	if (req)	413	switch (req->type)
233	return;	414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
234		418
235	FD_ZERO(&rfd);	419	if (req->result >= 0)
236	FD_SET(respipe [0], &rfd);	420	{
		421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
237		424
238	select (respipe [0] + 1, &rfd, 0, 0, 0);	425	av_extend (av, req->result - 1);
		426
		427	for (i = 0; i < req->result; ++i)
		428	{
		429	SV *sv = newSVpv (buf, 0);
		430
		431	av_store (av, i, sv);
		432	buf += SvCUR (sv) + 1;
		433	}
		434
		435	rv = sv_2mortal (newRV_noinc ((SV *)av));
		436	}
		437
		438	PUSHs (rv);
		439	}
		440	break;
		441
		442	case REQ_OPEN:
		443	{
		444	/* convert fd to fh */
		445	SV *fh;
		446
		447	PUSHs (sv_2mortal (newSViv (req->result)));
		448	PUTBACK;
		449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		450	SPAGAIN;
		451
		452	fh = POPs;
		453	PUSHMARK (SP);
		454	XPUSHs (fh);
		455	}
		456	break;
		457
		458	case REQ_GROUP:
		459	req->int1 = 2; /* mark group as finished */
		460
		461	if (req->sv1)
		462	{
		463	int i;
		464	AV *av = (AV *)req->sv1;
		465
		466	EXTEND (SP, AvFILL (av) + 1);
		467	for (i = 0; i <= AvFILL (av); ++i)
		468	PUSHs (*av_fetch (av, i, 0));
		469	}
		470	break;
		471
		472	case REQ_NOP:
		473	case REQ_BUSY:
		474	break;
		475
		476	case REQ_READLINK:
		477	if (req->result > 0)
		478	{
		479	SvCUR_set (req->sv1, req->result);
		480	*SvEND (req->sv1) = 0;
		481	PUSHs (req->sv1);
		482	}
		483	break;
		484
		485	case REQ_STAT:
		486	case REQ_LSTAT:
		487	case REQ_FSTAT:
		488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		489	PL_laststatval = req->result;
		490	PL_statcache = *(Stat_t *)(req->ptr2);
		491	PUSHs (sv_2mortal (newSViv (req->result)));
		492	break;
		493
		494	case REQ_READ:
		495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		496	*SvEND (req->sv1) = 0;
		497	PUSHs (sv_2mortal (newSViv (req->result)));
		498	break;
		499
		500	default:
		501	PUSHs (sv_2mortal (newSViv (req->result)));
		502	break;
		503	}
		504
		505	errno = req->errorno;
		506
		507	PUTBACK;
		508	call_sv (req->callback, G_VOID | G_EVAL);
		509	SPAGAIN;
		510
		511	FREETMPS;
		512	LEAVE;
239	}	513	}
240	}
241		514
242	static void req_invoke (aio_req req)	515	if (req->grp)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{	516	{
259	case REQ_READDIR:	517	aio_req grp = req->grp;
260	{
261	SV *rv = &PL_sv_undef;
262		518
263	if (req->result >= 0)	519	/* unlink request */
264	{	520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
265	char *buf = req->data2ptr;	521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
266	AV *av = newAV ();
267		522
268	while (req->result)	523	if (grp->grp_first == req)
269	{	524	grp->grp_first = req->grp_next;
270	SV *sv = newSVpv (buf, 0);
271		525
272	av_push (av, sv);	526	aio_grp_dec (grp);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}	527	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333		528
334	if (SvTRUE (ERRSV))	529	if (SvTRUE (ERRSV))
335	{	530	{
336	req_free (req);	531	req_free (req);
337	croak (0);	532	croak (0);
338	}	533	}
339	}	534	}
340		535
341	static void req_free (aio_req req)	536	static void req_free (aio_req req)
342	{	537	{
343	if (req->grp)
344	{
345	aio_req grp = req->grp;
346
347	/* unlink request */
348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351	if (grp->grp_first == req)
352	grp->grp_first = req->grp_next;
353
354	aio_grp_dec (grp);
355	}
356
357	if (req->self)	538	if (req->self)
358	{	539	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	540	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	541	SvREFCNT_dec (req->self);
361	}	542	}
362		543
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	544	SvREFCNT_dec (req->fh);
		545	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	546	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	547	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368		548
369	if (req->type == REQ_READDIR && req->result >= 0)	549	if (req->flags & FLAG_PTR2_FREE)
370	free (req->data2ptr);	550	free (req->ptr2);
371		551
372	Safefree (req);	552	Safefree (req);
373	}	553	}
374		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
375	static void req_cancel (aio_req req)	569	static void req_cancel (aio_req req)
376	{	570	{
377	req->flags |= FLAG_CANCELLED;	571	req->flags |= FLAG_CANCELLED;
378		572
379	if (req->type == REQ_GROUP)	573	req_cancel_subs (req);
380	{
381	aio_req sub;
382
383	for (sub = req->grp_first; sub; sub = sub->grp_next)
384	req_cancel (sub);
385	}
386	}
387
388	static int poll_cb ()
389	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)
396	{
397	pthread_mutex_lock (&reslock);
398	req = ress;
399
400	if (req)
401	{
402	ress = req->next;
403
404	if (!ress)
405	{
406	/* read any signals sent by the worker threads */
407	char buf [32];
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}
413	}
414
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;
419
420	--nreqs;
421
422	if (req->type == REQ_QUIT)
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}
451
452	return count;
453	}	574	}
454		575
455	static void *aio_proc(void *arg);	576	static void *aio_proc(void *arg);
456		577
457	static void start_thread (void)	578	static void start_thread (void)
458	{	579	{
459	sigset_t fullsigset, oldsigset;	580	sigset_t fullsigset, oldsigset;
460	pthread_t tid;
461	pthread_attr_t attr;	581	pthread_attr_t attr;
		582
		583	worker *wrk = calloc (1, sizeof (worker));
		584
		585	if (!wrk)
		586	croak ("unable to allocate worker thread data");
462		587
463	pthread_attr_init (&attr);	588	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);	589	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		591	#ifdef PTHREAD_SCOPE_PROCESS
		592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		593	#endif
466		594
467	sigfillset (&fullsigset);	595	sigfillset (&fullsigset);
		596
		597	LOCK (wrklock);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469		599
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}
475
476	static void req_send (aio_req req)
477	{
478	while (started < wanted && nreqs >= started)
479	start_thread ();
480
481	++nreqs;
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{	601	{
489	reqe->next = req;	602	wrk->prev = &wrk_first;
490	reqe = req;	603	wrk->next = wrk_first.next;
		604	wrk_first.next->prev = wrk;
		605	wrk_first.next = wrk;
		606	++started;
491	}	607	}
492	else	608	else
493	reqe = reqs = req;	609	free (wrk);
494		610
		611	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		612	UNLOCK (wrklock);
		613	}
		614
		615	static void maybe_start_thread ()
		616	{
		617	if (get_nthreads () >= wanted)
		618	return;
		619
		620	/* todo: maybe use idle here, but might be less exact */
		621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		622	return;
		623
		624	start_thread ();
		625	}
		626
		627	static void req_send (aio_req req)
		628	{
		629	++nreqs;
		630
		631	LOCK (reqlock);
		632	++nready;
		633	reqq_push (&req_queue, req);
495	pthread_cond_signal (&reqwait);	634	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);	635	UNLOCK (reqlock);
497		636
498	if (nreqs > max_outstanding)	637	maybe_start_thread ();
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}	638	}
509		639
510	static void end_thread (void)	640	static void end_thread (void)
511	{	641	{
512	aio_req req;	642	aio_req req;
		643
513	Newz (0, req, 1, aio_cb);	644	Newz (0, req, 1, aio_cb);
		645
514	req->type = REQ_QUIT;	646	req->type = REQ_QUIT;
		647	req->pri = PRI_MAX + PRI_BIAS;
515		648
516	req_send (req);	649	LOCK (reqlock);
		650	reqq_push (&req_queue, req);
		651	pthread_cond_signal (&reqwait);
		652	UNLOCK (reqlock);
		653
		654	LOCK (wrklock);
		655	--started;
		656	UNLOCK (wrklock);
		657	}
		658
		659	static void set_max_idle (int nthreads)
		660	{
		661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		662	max_idle = nthreads <= 0 ? 1 : nthreads;
		663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
517	}	664	}
518		665
519	static void min_parallel (int nthreads)	666	static void min_parallel (int nthreads)
520	{	667	{
521	if (wanted < nthreads)	668	if (wanted < nthreads)
522	wanted = nthreads;	669	wanted = nthreads;
523	}	670	}
524		671
525	static void max_parallel (int nthreads)	672	static void max_parallel (int nthreads)
526	{	673	{
527	int cur = started;
528
529	if (wanted > nthreads)	674	if (wanted > nthreads)
530	wanted = nthreads;	675	wanted = nthreads;
531		676
532	while (cur > wanted)	677	while (started > wanted)
		678	end_thread ();
		679	}
		680
		681	static void poll_wait ()
		682	{
		683	fd_set rfd;
		684
		685	while (nreqs)
533	{	686	{
		687	int size;
		688	if (WORDACCESS_UNSAFE) LOCK (reslock);
		689	size = res_queue.size;
		690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		691
		692	if (size)
		693	return;
		694
534	end_thread ();	695	maybe_start_thread ();
535	cur--;	696
		697	FD_ZERO(&rfd);
		698	FD_SET(respipe [0], &rfd);
		699
		700	select (respipe [0] + 1, &rfd, 0, 0, 0);
536	}	701	}
		702	}
537		703
538	while (started > wanted)	704	static int poll_cb ()
		705	{
		706	dSP;
		707	int count = 0;
		708	int maxreqs = max_poll_reqs;
		709	int do_croak = 0;
		710	struct timeval tv_start, tv_now;
		711	aio_req req;
		712
		713	if (max_poll_time)
		714	gettimeofday (&tv_start, 0);
		715
		716	for (;;)
539	{	717	{
		718	for (;;)
		719	{
		720	maybe_start_thread ();
		721
		722	LOCK (reslock);
		723	req = reqq_shift (&res_queue);
		724
		725	if (req)
		726	{
		727	--npending;
		728
		729	if (!res_queue.size)
		730	{
		731	/* read any signals sent by the worker threads */
		732	char buf [32];
		733	while (read (respipe [0], buf, 32) == 32)
		734	;
		735	}
		736	}
		737
		738	UNLOCK (reslock);
		739
		740	if (!req)
		741	break;
		742
		743	--nreqs;
		744
		745	if (req->type == REQ_GROUP && req->size)
		746	{
		747	req->int1 = 1; /* mark request as delayed */
		748	continue;
		749	}
		750	else
		751	{
		752	req_invoke (req);
		753
		754	count++;
		755	}
		756
		757	req_free (req);
		758
		759	if (maxreqs && !--maxreqs)
		760	break;
		761
		762	if (max_poll_time)
		763	{
		764	gettimeofday (&tv_now, 0);
		765
		766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		767	break;
		768	}
		769	}
		770
		771	if (nreqs <= max_outstanding)
		772	break;
		773
540	poll_wait ();	774	poll_wait ();
541	poll_cb ();	775
		776	++maxreqs;
542	}	777	}
		778
		779	return count;
543	}	780	}
544		781
545	static void create_pipe ()	782	static void create_pipe ()
546	{	783	{
547	if (pipe (respipe))	784	if (pipe (respipe))
…		…
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{	809	{
573	ssize_t res;	810	ssize_t res;
574	off_t ooffset;	811	off_t ooffset;
575		812
576	pthread_mutex_lock (&preadwritelock);	813	LOCK (preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);	814	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);	815	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);	816	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);	817	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);	818	UNLOCK (preadwritelock);
582		819
583	return res;	820	return res;
584	}	821	}
585		822
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{	824	{
588	ssize_t res;	825	ssize_t res;
589	off_t ooffset;	826	off_t ooffset;
590		827
591	pthread_mutex_lock (&preadwritelock);	828	LOCK (preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);	829	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);	830	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);	831	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);	833	UNLOCK (preadwritelock);
597		834
598	return res;	835	return res;
599	}	836	}
600	#endif	837	#endif
601		838
602	#if !HAVE_FDATASYNC	839	#if !HAVE_FDATASYNC
603	# define fdatasync fsync	840	# define fdatasync fsync
604	#endif	841	#endif
605		842
606	#if !HAVE_READAHEAD	843	#if !HAVE_READAHEAD
607	# define readahead aio_readahead	844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
608		845
609	static ssize_t readahead (int fd, off_t offset, size_t count)	846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
610	{	847	{
611	dBUF;	848	dBUF;
612		849
613	while (count > 0)	850	while (count > 0)
614	{	851	{
…		…
617	pread (fd, aio_buf, len, offset);	854	pread (fd, aio_buf, len, offset);
618	offset += len;	855	offset += len;
619	count -= len;	856	count -= len;
620	}	857	}
621		858
622	fBUF;
623
624	errno = 0;	859	errno = 0;
625	}	860	}
		861
626	#endif	862	#endif
627		863
628	#if !HAVE_READDIR_R	864	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r	865	# define readdir_r aio_readdir_r
630		866
…		…
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{	870	{
635	struct dirent *e;	871	struct dirent *e;
636	int errorno;	872	int errorno;
637		873
638	pthread_mutex_lock (&readdirlock);	874	LOCK (readdirlock);
639		875
640	e = readdir (dirp);	876	e = readdir (dirp);
641	errorno = errno;	877	errorno = errno;
642		878
643	if (e)	879	if (e)
…		…
646	strcpy (ent->d_name, e->d_name);	882	strcpy (ent->d_name, e->d_name);
647	}	883	}
648	else	884	else
649	*res = 0;	885	*res = 0;
650		886
651	pthread_mutex_unlock (&readdirlock);	887	UNLOCK (readdirlock);
652		888
653	errno = errorno;	889	errno = errorno;
654	return e ? 0 : -1;	890	return e ? 0 : -1;
655	}	891	}
656	#endif	892	#endif
657		893
658	/* sendfile always needs emulation */	894	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	895	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
660	{	896	{
661	ssize_t res;	897	ssize_t res;
662		898
663	if (!count)	899	if (!count)
664	return 0;	900	return 0;
…		…
675	{	911	{
676	off_t sbytes;	912	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		914
679	if (res < 0 && sbytes)	915	if (res < 0 && sbytes)
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
681	res = sbytes;	917	res = sbytes;
682	}	918	}
683		919
684	# elif __hpux	920	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);	921	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
741		977
742	offset += cnt;	978	offset += cnt;
743	res += cnt;	979	res += cnt;
744	count -= cnt;	980	count -= cnt;
745	}	981	}
746
747	fBUF;
748	}	982	}
749		983
750	return res;	984	return res;
751	}	985	}
752		986
753	/* read a full directory */	987	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)	988	static void scandir_ (aio_req req, worker *self)
755	{	989	{
756	DIR *dirp;	990	DIR *dirp;
757	union	991	union
758	{	992	{
759	struct dirent d;	993	struct dirent d;
…		…
764	int memlen = 4096;	998	int memlen = 4096;
765	int memofs = 0;	999	int memofs = 0;
766	int res = 0;	1000	int res = 0;
767	int errorno;	1001	int errorno;
768		1002
769	dirp = opendir (path);	1003	LOCK (wrklock);
770	if (!dirp)	1004	self->dirp = dirp = opendir (req->ptr1);
771	return -1;
772
773	u = malloc (sizeof (*u));	1005	self->dbuf = u = malloc (sizeof (*u));
		1006	req->flags |= FLAG_PTR2_FREE;
774	names = malloc (memlen);	1007	req->ptr2 = names = malloc (memlen);
		1008	UNLOCK (wrklock);
775		1009
776	if (u && names)	1010	if (dirp && u && names)
777	for (;;)	1011	for (;;)
778	{	1012	{
779	errno = 0;	1013	errno = 0;
780	readdir_r (dirp, &u->d, &entp);	1014	readdir_r (dirp, &u->d, &entp);
781		1015
…		…
791	res++;	1025	res++;
792		1026
793	while (memofs + len > memlen)	1027	while (memofs + len > memlen)
794	{	1028	{
795	memlen *= 2;	1029	memlen *= 2;
		1030	LOCK (wrklock);
796	names = realloc (names, memlen);	1031	req->ptr2 = names = realloc (names, memlen);
		1032	UNLOCK (wrklock);
		1033
797	if (!names)	1034	if (!names)
798	break;	1035	break;
799	}	1036	}
800		1037
801	memcpy (names + memofs, name, len);	1038	memcpy (names + memofs, name, len);
802	memofs += len;	1039	memofs += len;
803	}	1040	}
804	}	1041	}
805		1042
806	errorno = errno;
807	free (u);
808	closedir (dirp);
809
810	if (errorno)	1043	if (errno)
		1044	res = -1;
		1045
		1046	req->result = res;
		1047	}
		1048
		1049	/*****************************************************************************/
		1050
		1051	static void *aio_proc (void *thr_arg)
		1052	{
		1053	aio_req req;
		1054	struct timespec ts;
		1055	worker *self = (worker *)thr_arg;
		1056
		1057	/* try to distribute timeouts somewhat evenly */
		1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1059	* (1000000000UL / 1024UL);
		1060
		1061	for (;;)
811	{	1062	{
812	free (names);	1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
813	errno = errorno;
814	res = -1;
815	}
816		1064
817	*namesp = (void *)names;	1065	LOCK (reqlock);
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831		1066
832	for (;;)	1067	for (;;)
833	{	1068	{
834	req = reqs;	1069	self->req = req = reqq_shift (&req_queue);
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841		1070
842	if (req)	1071	if (req)
843	break;	1072	break;
844		1073
		1074	++idle;
		1075
		1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1077	== ETIMEDOUT)
		1078	{
		1079	if (idle > max_idle)
		1080	{
		1081	--idle;
		1082	UNLOCK (reqlock);
		1083	LOCK (wrklock);
		1084	--started;
		1085	UNLOCK (wrklock);
		1086	goto quit;
		1087	}
		1088
		1089	/* we are allowed to idle, so do so without any timeout */
845	pthread_cond_wait (&reqwait, &reqlock);	1090	pthread_cond_wait (&reqwait, &reqlock);
		1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1092	}
		1093
		1094	--idle;
846	}	1095	}
847		1096
848	pthread_mutex_unlock (&reqlock);	1097	--nready;
		1098
		1099	UNLOCK (reqlock);
849		1100
850	errno = 0; /* strictly unnecessary */	1101	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852		1102
853	if (!(req->flags & FLAG_CANCELLED))	1103	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)	1104	switch (req->type)
855	{	1105	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
858		1108
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
861		1111
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
865		1115
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;	1117	case REQ_CLOSE: req->result = close (req->int1); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
873		1125
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;	1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1128	case REQ_READDIR: scandir_ (req, self); break;
877		1129
878	case REQ_SLEEP:	1130	case REQ_BUSY:
879	{	1131	{
880	struct timeval tv;	1132	struct timeval tv;
881		1133
882	tv.tv_sec = req->fd;	1134	tv.tv_sec = req->int1;
883	tv.tv_usec = req->fd2;	1135	tv.tv_usec = req->int2;
884		1136
885	req->result = select (0, 0, 0, 0, &tv);	1137	req->result = select (0, 0, 0, 0, &tv);
886	}	1138	}
887		1139
888	case REQ_GROUP:	1140	case REQ_GROUP:
889	case REQ_NOP:	1141	case REQ_NOP:
		1142	break;
		1143
890	case REQ_QUIT:	1144	case REQ_QUIT:
891	break;	1145	goto quit;
892		1146
893	default:	1147	default:
894	req->result = ENOSYS;	1148	req->result = ENOSYS;
895	break;	1149	break;
896	}	1150	}
897		1151
898	req->errorno = errno;	1152	req->errorno = errno;
899		1153
900	pthread_mutex_lock (&reslock);	1154	LOCK (reslock);
901		1155
902	req->next = 0;	1156	++npending;
903		1157
904	if (rese)	1158	if (!reqq_push (&res_queue, req))
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */	1159	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);	1160	write (respipe [1], &respipe, 1);
915	}
916		1161
917	pthread_mutex_unlock (&reslock);	1162	self->req = 0;
		1163	worker_clear (self);
		1164
		1165	UNLOCK (reslock);
918	}	1166	}
919	while (type != REQ_QUIT);	1167
		1168	quit:
		1169	LOCK (wrklock);
		1170	worker_free (self);
		1171	UNLOCK (wrklock);
920		1172
921	return 0;	1173	return 0;
922	}	1174	}
923		1175
924	/*****************************************************************************/	1176	/*****************************************************************************/
925		1177
926	static void atfork_prepare (void)	1178	static void atfork_prepare (void)
927	{	1179	{
928	pthread_mutex_lock (&reqlock);	1180	LOCK (wrklock);
929	pthread_mutex_lock (&reslock);	1181	LOCK (reqlock);
		1182	LOCK (reslock);
930	#if !HAVE_PREADWRITE	1183	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);	1184	LOCK (preadwritelock);
932	#endif	1185	#endif
933	#if !HAVE_READDIR_R	1186	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);	1187	LOCK (readdirlock);
935	#endif	1188	#endif
936	}	1189	}
937		1190
938	static void atfork_parent (void)	1191	static void atfork_parent (void)
939	{	1192	{
940	#if !HAVE_READDIR_R	1193	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);	1194	UNLOCK (readdirlock);
942	#endif	1195	#endif
943	#if !HAVE_PREADWRITE	1196	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);	1197	UNLOCK (preadwritelock);
945	#endif	1198	#endif
946	pthread_mutex_unlock (&reslock);	1199	UNLOCK (reslock);
947	pthread_mutex_unlock (&reqlock);	1200	UNLOCK (reqlock);
		1201	UNLOCK (wrklock);
948	}	1202	}
949		1203
950	static void atfork_child (void)	1204	static void atfork_child (void)
951	{	1205	{
952	aio_req prv;	1206	aio_req prv;
953		1207
954	started = 0;	1208	while (prv = reqq_shift (&req_queue))
		1209	req_free (prv);
955		1210
956	while (reqs)	1211	while (prv = reqq_shift (&res_queue))
		1212	req_free (prv);
		1213
		1214	while (wrk_first.next != &wrk_first)
957	{	1215	{
958	prv = reqs;	1216	worker *wrk = wrk_first.next;
959	reqs = prv->next;	1217
		1218	if (wrk->req)
		1219	req_free (wrk->req);
		1220
		1221	worker_clear (wrk);
960	req_free (prv);	1222	worker_free (wrk);
961	}	1223	}
962		1224
963	reqs = reqe = 0;	1225	started = 0;
964		1226	idle = 0;
965	while (ress)	1227	nreqs = 0;
966	{	1228	nready = 0;
967	prv = ress;	1229	npending = 0;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973		1230
974	close (respipe [0]);	1231	close (respipe [0]);
975	close (respipe [1]);	1232	close (respipe [1]);
976	create_pipe ();	1233	create_pipe ();
977		1234
…		…
1004	PROTOTYPES: ENABLE	1261	PROTOTYPES: ENABLE
1005		1262
1006	BOOT:	1263	BOOT:
1007	{	1264	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	HV *stash = gv_stashpv ("IO::AIO", 1);
		1266
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1012		1273
1013	create_pipe ();	1274	create_pipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}	1276	}
1016		1277
1017	void	1278	void
1018	min_parallel (nthreads)	1279	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	1280	PROTOTYPE: $
		1281	CODE:
		1282	max_poll_reqs = nreqs;
1021		1283
1022	void	1284	void
1023	max_parallel (nthreads)	1285	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	1286	PROTOTYPE: $
		1287	CODE:
		1288	max_poll_time = nseconds * AIO_TICKS;
		1289
		1290	void
		1291	min_parallel (int nthreads)
		1292	PROTOTYPE: $
		1293
		1294	void
		1295	max_parallel (int nthreads)
		1296	PROTOTYPE: $
		1297
		1298	void
		1299	max_idle (int nthreads)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	set_max_idle (nthreads);
1026		1303
1027	int	1304	int
1028	max_outstanding (nreqs)	1305	max_outstanding (int maxreqs)
1029	int nreqs	1306	PROTOTYPE: $
1030	PROTOTYPE: $
1031	CODE:	1307	CODE:
1032	RETVAL = max_outstanding;	1308	RETVAL = max_outstanding;
1033	max_outstanding = nreqs;	1309	max_outstanding = maxreqs;
		1310	OUTPUT:
		1311	RETVAL
1034		1312
1035	void	1313	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1037	SV * pathname	1315	SV8 * pathname
1038	int flags	1316	int flags
1039	int mode	1317	int mode
1040	SV * callback	1318	SV * callback
1041	PROTOTYPE: $$$;$	1319	PROTOTYPE: $$$;$
1042	PPCODE:	1320	PPCODE:
1043	{	1321	{
1044	dREQ;	1322	dREQ;
1045		1323
1046	req->type = REQ_OPEN;	1324	req->type = REQ_OPEN;
1047	req->data = newSVsv (pathname);	1325	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	1326	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	1327	req->int1 = flags;
1050	req->mode = mode;	1328	req->mode = mode;
1051		1329
1052	REQ_SEND;	1330	REQ_SEND;
1053	}	1331	}
1054		1332
…		…
1064	PPCODE:	1342	PPCODE:
1065	{	1343	{
1066	dREQ;	1344	dREQ;
1067		1345
1068	req->type = ix;	1346	req->type = ix;
1069	req->fh = newSVsv (fh);	1347	req->fh = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071		1349
1072	REQ_SEND (req);	1350	REQ_SEND (req);
1073	}	1351	}
1074		1352
1075	void	1353	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077	SV * fh	1355	SV * fh
1078	UV offset	1356	UV offset
1079	UV length	1357	UV length
1080	SV * data	1358	SV8 * data
1081	UV dataoffset	1359	UV dataoffset
1082	SV * callback	1360	SV * callback
1083	ALIAS:	1361	ALIAS:
1084	aio_read = REQ_READ	1362	aio_read = REQ_READ
1085	aio_write = REQ_WRITE	1363	aio_write = REQ_WRITE
1086	PROTOTYPE: $$$$$;$	1364	PROTOTYPE: $$$$$;$
1087	PPCODE:	1365	PPCODE:
1088	{	1366	{
1089	aio_req req;
1090	STRLEN svlen;	1367	STRLEN svlen;
1091	char *svptr = SvPVbyte (data, svlen);	1368	char *svptr = SvPVbyte (data, svlen);
1092		1369
1093	SvUPGRADE (data, SVt_PV);	1370	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);	1371	SvPOK_on (data);
…		…
1116		1393
1117	{	1394	{
1118	dREQ;	1395	dREQ;
1119		1396
1120	req->type = ix;	1397	req->type = ix;
1121	req->fh = newSVsv (fh);	1398	req->fh = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1123	: IoOFP (sv_2io (fh)));	1400	: IoOFP (sv_2io (fh)));
1124	req->offset = offset;	1401	req->offs = offset;
1125	req->length = length;	1402	req->size = length;
1126	req->data = SvREFCNT_inc (data);	1403	req->sv1 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	1404	req->ptr1 = (char *)svptr + dataoffset;
		1405	req->stroffset = dataoffset;
1128		1406
1129	if (!SvREADONLY (data))	1407	if (!SvREADONLY (data))
1130	{	1408	{
1131	SvREADONLY_on (data);	1409	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	1410	req->flags |= FLAG_SV1_RO_OFF;
1133	}	1411	}
1134		1412
1135	REQ_SEND;	1413	REQ_SEND;
1136	}	1414	}
		1415	}
		1416
		1417	void
		1418	aio_readlink (path,callback=&PL_sv_undef)
		1419	SV8 * path
		1420	SV * callback
		1421	PROTOTYPE: $$;$
		1422	PPCODE:
		1423	{
		1424	SV *data;
		1425	dREQ;
		1426
		1427	data = newSV (NAME_MAX);
		1428	SvPOK_on (data);
		1429
		1430	req->type = REQ_READLINK;
		1431	req->fh = newSVsv (path);
		1432	req->ptr2 = SvPVbyte_nolen (req->fh);
		1433	req->sv1 = data;
		1434	req->ptr1 = SvPVbyte_nolen (data);
		1435
		1436	REQ_SEND;
1137	}	1437	}
1138		1438
1139	void	1439	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1141	SV * out_fh	1441	SV * out_fh
…		…
1147	PPCODE:	1447	PPCODE:
1148	{	1448	{
1149	dREQ;	1449	dREQ;
1150		1450
1151	req->type = REQ_SENDFILE;	1451	req->type = REQ_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1452	req->fh = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154	req->fh2 = newSVsv (in_fh);	1454	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156	req->offset = in_offset;	1456	req->offs = in_offset;
1157	req->length = length;	1457	req->size = length;
1158		1458
1159	REQ_SEND;	1459	REQ_SEND;
1160	}	1460	}
1161		1461
1162	void	1462	void
…		…
1169	PPCODE:	1469	PPCODE:
1170	{	1470	{
1171	dREQ;	1471	dREQ;
1172		1472
1173	req->type = REQ_READAHEAD;	1473	req->type = REQ_READAHEAD;
1174	req->fh = newSVsv (fh);	1474	req->fh = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176	req->offset = offset;	1476	req->offs = offset;
1177	req->length = length;	1477	req->size = length;
1178		1478
1179	REQ_SEND;	1479	REQ_SEND;
1180	}	1480	}
1181		1481
1182	void	1482	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1483	aio_stat (fh_or_path,callback=&PL_sv_undef)
1184	SV * fh_or_path	1484	SV8 * fh_or_path
1185	SV * callback	1485	SV * callback
1186	ALIAS:	1486	ALIAS:
1187	aio_stat = REQ_STAT	1487	aio_stat = REQ_STAT
1188	aio_lstat = REQ_LSTAT	1488	aio_lstat = REQ_LSTAT
1189	PPCODE:	1489	PPCODE:
1190	{	1490	{
1191	dREQ;	1491	dREQ;
1192		1492
1193	New (0, req->statdata, 1, Stat_t);	1493	req->ptr2 = malloc (sizeof (Stat_t));
1194	if (!req->statdata)	1494	if (!req->ptr2)
1195	{	1495	{
1196	req_free (req);	1496	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");	1497	croak ("out of memory during aio_stat statdata allocation");
1198	}	1498	}
		1499
		1500	req->flags |= FLAG_PTR2_FREE;
1199		1501
1200	if (SvPOK (fh_or_path))	1502	if (SvPOK (fh_or_path))
1201	{	1503	{
1202	req->type = ix;	1504	req->type = ix;
1203	req->data = newSVsv (fh_or_path);	1505	req->sv1 = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1506	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	1507	}
1206	else	1508	else
1207	{	1509	{
1208	req->type = REQ_FSTAT;	1510	req->type = REQ_FSTAT;
1209	req->fh = newSVsv (fh_or_path);	1511	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	1513	}
1212		1514
1213	REQ_SEND;	1515	REQ_SEND;
1214	}	1516	}
1215		1517
1216	void	1518	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1519	aio_unlink (pathname,callback=&PL_sv_undef)
1218	SV * pathname	1520	SV8 * pathname
1219	SV * callback	1521	SV * callback
1220	ALIAS:	1522	ALIAS:
1221	aio_unlink = REQ_UNLINK	1523	aio_unlink = REQ_UNLINK
1222	aio_rmdir = REQ_RMDIR	1524	aio_rmdir = REQ_RMDIR
1223	aio_readdir = REQ_READDIR	1525	aio_readdir = REQ_READDIR
1224	PPCODE:	1526	PPCODE:
1225	{	1527	{
1226	dREQ;	1528	dREQ;
1227		1529
1228	req->type = ix;	1530	req->type = ix;
1229	req->data = newSVsv (pathname);	1531	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1532	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1533
1232	REQ_SEND;	1534	REQ_SEND;
1233	}	1535	}
1234		1536
1235	void	1537	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1237	SV * oldpath	1539	SV8 * oldpath
1238	SV * newpath	1540	SV8 * newpath
1239	SV * callback	1541	SV * callback
1240	ALIAS:	1542	ALIAS:
1241	aio_link = REQ_LINK	1543	aio_link = REQ_LINK
1242	aio_symlink = REQ_SYMLINK	1544	aio_symlink = REQ_SYMLINK
1243	aio_rename = REQ_RENAME	1545	aio_rename = REQ_RENAME
1244	PPCODE:	1546	PPCODE:
1245	{	1547	{
1246	dREQ;	1548	dREQ;
1247		1549
1248	req->type = ix;	1550	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1551	req->fh = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1251	req->data = newSVsv (newpath);	1553	req->sv1 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1253		1555
1254	REQ_SEND;	1556	REQ_SEND;
1255	}	1557	}
1256		1558
1257	void	1559	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1259	double delay	1561	SV8 * pathname
1260	SV * callback	1562	SV * callback
		1563	UV mode
		1564	UV dev
1261	PPCODE:	1565	PPCODE:
1262	{	1566	{
1263	dREQ;	1567	dREQ;
		1568
		1569	req->type = REQ_MKNOD;
		1570	req->sv1 = newSVsv (pathname);
		1571	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1572	req->mode = (mode_t)mode;
		1573	req->offs = dev;
		1574
		1575	REQ_SEND;
		1576	}
1264		1577
		1578	void
		1579	aio_busy (delay,callback=&PL_sv_undef)
		1580	double delay
		1581	SV * callback
		1582	PPCODE:
		1583	{
		1584	dREQ;
		1585
1265	req->type = REQ_SLEEP;	1586	req->type = REQ_BUSY;
1266	req->fd = delay < 0. ? 0 : delay;	1587	req->int1 = delay < 0. ? 0 : delay;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1268		1589
1269	REQ_SEND;	1590	REQ_SEND;
1270	}	1591	}
1271		1592
1272	void	1593	void
…		…
1276	PPCODE:	1597	PPCODE:
1277	{	1598	{
1278	dREQ;	1599	dREQ;
1279		1600
1280	req->type = REQ_GROUP;	1601	req->type = REQ_GROUP;
		1602
1281	req_send (req);	1603	req_send (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	1605	}
1285		1606
1286	void	1607	void
1287	aio_nop (callback=&PL_sv_undef)	1608	aio_nop (callback=&PL_sv_undef)
1288	SV * callback	1609	SV * callback
1289	PPCODE:	1610	PPCODE:
1290	{	1611	{
1291	dREQ;	1612	dREQ;
1292		1613
1293	req->type = REQ_NOP;	1614	req->type = REQ_NOP;
1294		1615
1295	REQ_SEND;	1616	REQ_SEND;
1296	}	1617	}
1297		1618
1298	#if 0	1619	int
1299		1620	aioreq_pri (int pri = 0)
1300	void	1621	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1622	CODE:
		1623	RETVAL = next_pri - PRI_BIAS;
		1624	if (items > 0)
		1625	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1626	if (pri < PRI_MIN) pri = PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1627	if (pri > PRI_MAX) pri = PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1628	next_pri = pri + PRI_BIAS;
		1629	}
		1630	OUTPUT:
		1631	RETVAL
1306		1632
1307	#endif	1633	void
		1634	aioreq_nice (int nice = 0)
		1635	CODE:
		1636	nice = next_pri - nice;
		1637	if (nice < PRI_MIN) nice = PRI_MIN;
		1638	if (nice > PRI_MAX) nice = PRI_MAX;
		1639	next_pri = nice + PRI_BIAS;
1308		1640
1309	void	1641	void
1310	flush ()	1642	flush ()
1311	PROTOTYPE:	1643	PROTOTYPE:
1312	CODE:	1644	CODE:
…		…
1314	{	1646	{
1315	poll_wait ();	1647	poll_wait ();
1316	poll_cb ();	1648	poll_cb ();
1317	}	1649	}
1318		1650
1319	void	1651	int
1320	poll()	1652	poll()
1321	PROTOTYPE:	1653	PROTOTYPE:
1322	CODE:	1654	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1655	poll_wait ();
1326	poll_cb ();	1656	RETVAL = poll_cb ();
1327	}	1657	OUTPUT:
		1658	RETVAL
1328		1659
1329	int	1660	int
1330	poll_fileno()	1661	poll_fileno()
1331	PROTOTYPE:	1662	PROTOTYPE:
1332	CODE:	1663	CODE:
…		…
1344		1675
1345	void	1676	void
1346	poll_wait()	1677	poll_wait()
1347	PROTOTYPE:	1678	PROTOTYPE:
1348	CODE:	1679	CODE:
1349	if (nreqs)
1350	poll_wait ();	1680	poll_wait ();
1351		1681
1352	int	1682	int
1353	nreqs()	1683	nreqs()
1354	PROTOTYPE:	1684	PROTOTYPE:
1355	CODE:	1685	CODE:
1356	RETVAL = nreqs;	1686	RETVAL = nreqs;
1357	OUTPUT:	1687	OUTPUT:
1358	RETVAL	1688	RETVAL
1359		1689
		1690	int
		1691	nready()
		1692	PROTOTYPE:
		1693	CODE:
		1694	RETVAL = get_nready ();
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	npending()
		1700	PROTOTYPE:
		1701	CODE:
		1702	RETVAL = get_npending ();
		1703	OUTPUT:
		1704	RETVAL
		1705
		1706	int
		1707	nthreads()
		1708	PROTOTYPE:
		1709	CODE:
		1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1711	RETVAL = started;
		1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1713	OUTPUT:
		1714	RETVAL
		1715
1360	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1361		1717
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1719
1364	void	1720	void
1365	cancel (aio_req_ornot req)	1721	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1722	CODE:
1368	req_cancel (req);	1723	req_cancel (req);
1369		1724
1370	void	1725	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1380	PPCODE:	1735	PPCODE:
1381	{	1736	{
1382	int i;	1737	int i;
1383	aio_req req;	1738	aio_req req;
1384		1739
1385	if (grp->fd == 2)	1740	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1742
1388	for (i = 1; i < items; ++i )	1743	for (i = 1; i < items; ++i )
1389	{	1744	{
1390	if (GIMME_V != G_VOID)	1745	if (GIMME_V != G_VOID)
…		…
1392		1747
1393	req = SvAIO_REQ (ST (i));	1748	req = SvAIO_REQ (ST (i));
1394		1749
1395	if (req)	1750	if (req)
1396	{	1751	{
1397	++grp->length;	1752	++grp->size;
1398	req->grp = grp;	1753	req->grp = grp;
1399		1754
1400	req->grp_prev = 0;	1755	req->grp_prev = 0;
1401	req->grp_next = grp->grp_first;	1756	req->grp_next = grp->grp_first;
1402		1757
…		…
1407	}	1762	}
1408	}	1763	}
1409	}	1764	}
1410		1765
1411	void	1766	void
		1767	cancel_subs (aio_req_ornot req)
		1768	CODE:
		1769	req_cancel_subs (req);
		1770
		1771	void
1412	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1413	CODE:	1773	CODE:
1414	{	1774	{
1415	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1416	AV *av = newAV ();	1780	av = newAV ();
1417		1781
1418	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1420		1784
1421	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1423	}	1787	}
1424		1788
1425	void	1789	void
		1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
		1793
		1794	void
1426	feed_limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1427	CODE:	1796	CODE:
1428	grp->fd2 = limit;	1797	grp->int2 = limit;
1429	aio_grp_feed (grp);	1798	aio_grp_feed (grp);
1430		1799
1431	void	1800	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1802	CODE:
1434	{	1803	{
1435	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
1437		1806
1438	if (grp->fd2 <= 0)	1807	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1808	grp->int2 = 2;
1440		1809
1441	aio_grp_feed (grp);	1810	aio_grp_feed (grp);
1442	}	1811	}
1443		1812

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