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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.53 by root, Mon Oct 23 00:17:07 2006 UTC vs.
Revision 1.91 by root, Wed Nov 8 01:57:43 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
…		…
34	# else	43	# else
35	# error sendfile support requested but not available	44	# error sendfile support requested but not available
36	# endif	45	# endif
37	#endif	46	#endif
38		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
39	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	52	#ifndef NAME_MAX
41	# define NAME_MAX 4096	53	# define NAME_MAX 4096
42	#endif	54	#endif
43		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
		59	#endif
		60
44	#if __ia64	61	#if __ia64
45	# define STACKSIZE 65536	62	# define STACKSIZE 65536
		63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		64	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	65	#else
47	# define STACKSIZE 8192	66	# define STACKSIZE 16384
48	#endif	67	#endif
		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
		81	/* buffer size for various temporary buffers */
		82	#define AIO_BUFSIZE 65536
		83
		84	#define dBUF \
		85	char *aio_buf; \
		86	LOCK (wrklock); \
		87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		88	UNLOCK (wrklock); \
		89	if (!aio_buf) \
		90	return -1;
		91
		92	typedef SV SV8; /* byte-sv, used for argument-checking */
49		93
50	enum {	94	enum {
51	REQ_QUIT,	95	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	96	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,	98	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	100	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	102	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	104	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	105	REQ_BUSY,
62	};	106	};
63		107
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	108	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	109	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		110
67	typedef struct aio_cb	111	typedef struct aio_cb
68	{	112	{
69	struct aio_cb *volatile next;	113	struct aio_cb *volatile next;
70		114
		115	SV *callback, *fh;
		116	SV *sv1, *sv2;
		117	void *ptr1, *ptr2;
		118	off_t offs;
		119	size_t size;
		120	ssize_t result;
		121
		122	STRLEN stroffset;
		123	int type;
		124	int int1, int2;
		125	int errorno;
		126	mode_t mode; /* open */
		127
		128	unsigned char flags;
		129	unsigned char pri;
		130
		131	SV *self; /* the perl counterpart of this request, if any */
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	133	} aio_cb;
		134
		135	enum {
		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) */
		139	};
90		140
91	typedef aio_cb *aio_req;	141	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	142	typedef aio_cb *aio_req_ornot;
93		143
		144	enum {
		145	PRI_MIN = -4,
		146	PRI_MAX = 4,
		147
		148	DEFAULT_PRI = 0,
		149	PRI_BIAS = -PRI_MIN,
		150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		151	};
		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
		165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		166
94	static int started, wanted;	167	static unsigned int started, idle, wanted;
95	static volatile int nreqs;	168
96	static int max_outstanding = 1<<30;	169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		171	#else
		172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		173	#endif
		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;
97	static int respipe [2];	221	static int respipe [2];
98		222
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		226
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	227	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		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 ();
106	static void req_invoke (aio_req req);	325	static void req_invoke (aio_req req);
107	static void req_free (aio_req req);	326	static void req_free (aio_req req);
		327	static void req_cancel (aio_req req);
108		328
109	/* must be called at most once */	329	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	330	static SV *req_sv (aio_req req, const char *klass)
111	{	331	{
112	if (!req->self)	332	if (!req->self)
…		…
130	return mg ? (aio_req)mg->mg_ptr : 0;	350	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	351	}
132		352
133	static void aio_grp_feed (aio_req grp)	353	static void aio_grp_feed (aio_req grp)
134	{	354	{
135	while (grp->length < grp->fd2)	355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
136	{	356	{
137	int old_len = grp->length;	357	int old_len = grp->size;
138		358
139	if (grp->fh2 && SvOK (grp->fh2))	359	if (grp->sv2 && SvOK (grp->sv2))
140	{	360	{
141	dSP;	361	dSP;
142		362
143	ENTER;	363	ENTER;
144	SAVETMPS;	364	SAVETMPS;
145	PUSHMARK (SP);	365	PUSHMARK (SP);
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147	PUTBACK;	367	PUTBACK;
148	call_sv (grp->fh2, G_VOID | G_EVAL);	368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
149	SPAGAIN;	369	SPAGAIN;
150	FREETMPS;	370	FREETMPS;
151	LEAVE;	371	LEAVE;
152	}	372	}
153		373
154	/* stop if no progress has been made */	374	/* stop if no progress has been made */
155	if (old_len == grp->length)	375	if (old_len == grp->size)
156	{	376	{
157	SvREFCNT_dec (grp->fh2);	377	SvREFCNT_dec (grp->sv2);
158	grp->fh2 = 0;	378	grp->sv2 = 0;
159	break;	379	break;
160	}	380	}
161	}	381	}
162	}	382	}
163		383
164	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
165	{	385	{
166	--grp->length;	386	--grp->size;
167		387
168	/* call feeder, if applicable */	388	/* call feeder, if applicable */
169	aio_grp_feed (grp);	389	aio_grp_feed (grp);
170		390
171	/* finish, if done */	391	/* finish, if done */
172	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
173	{	393	{
174	req_invoke (grp);	394	req_invoke (grp);
175	req_free (grp);	395	req_free (grp);
176	}	396	}
177	}	397	}
178		398
179	static void poll_wait ()	399	static void req_invoke (aio_req req)
180	{	400	{
181	if (nreqs && !ress)	401	dSP;
		402
		403	if (req->flags & FLAG_SV1_RO_OFF)
		404	SvREADONLY_off (req->sv1);
		405
		406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
182	{	407	{
183	fd_set rfd;	408	ENTER;
184	FD_ZERO(&rfd);	409	SAVETMPS;
185	FD_SET(respipe [0], &rfd);	410	PUSHMARK (SP);
		411	EXTEND (SP, 1);
186		412
187	select (respipe [0] + 1, &rfd, 0, 0, 0);	413	switch (req->type)
		414	{
		415	case REQ_READDIR:
		416	{
		417	SV *rv = &PL_sv_undef;
		418
		419	if (req->result >= 0)
		420	{
		421	int i;
		422	char *buf = req->ptr2;
		423	AV *av = newAV ();
		424
		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 = SvREFCNT_inc (POPs);
		453
		454	PUSHMARK (SP);
		455	XPUSHs (sv_2mortal (fh));
		456	}
		457	break;
		458
		459	case REQ_GROUP:
		460	req->int1 = 2; /* mark group as finished */
		461
		462	if (req->sv1)
		463	{
		464	int i;
		465	AV *av = (AV *)req->sv1;
		466
		467	EXTEND (SP, AvFILL (av) + 1);
		468	for (i = 0; i <= AvFILL (av); ++i)
		469	PUSHs (*av_fetch (av, i, 0));
		470	}
		471	break;
		472
		473	case REQ_NOP:
		474	case REQ_BUSY:
		475	break;
		476
		477	case REQ_READLINK:
		478	if (req->result > 0)
		479	{
		480	SvCUR_set (req->sv1, req->result);
		481	*SvEND (req->sv1) = 0;
		482	PUSHs (req->sv1);
		483	}
		484	break;
		485
		486	case REQ_STAT:
		487	case REQ_LSTAT:
		488	case REQ_FSTAT:
		489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		490	PL_laststatval = req->result;
		491	PL_statcache = *(Stat_t *)(req->ptr2);
		492	PUSHs (sv_2mortal (newSViv (req->result)));
		493	break;
		494
		495	case REQ_READ:
		496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		497	*SvEND (req->sv1) = 0;
		498	PUSHs (sv_2mortal (newSViv (req->result)));
		499	break;
		500
		501	default:
		502	PUSHs (sv_2mortal (newSViv (req->result)));
		503	break;
		504	}
		505
		506	errno = req->errorno;
		507
		508	PUTBACK;
		509	call_sv (req->callback, G_VOID | G_EVAL);
		510	SPAGAIN;
		511
		512	FREETMPS;
		513	LEAVE;
188	}	514	}
189	}
190		515
191	static void req_invoke (aio_req req)	516	if (req->grp)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{	517	{
208	case REQ_READDIR:	518	aio_req grp = req->grp;
209	{
210	SV *rv = &PL_sv_undef;
211		519
212	if (req->result >= 0)	520	/* unlink request */
213	{	521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
214	char *buf = req->data2ptr;	522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
215	AV *av = newAV ();
216		523
217	while (req->result)	524	if (grp->grp_first == req)
218	{	525	grp->grp_first = req->grp_next;
219	SV *sv = newSVpv (buf, 0);
220		526
221	av_push (av, sv);	527	aio_grp_dec (grp);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_SLEEP:
265	break;
266
267	default:
268	PUSHs (sv_2mortal (newSViv (req->result)));
269	break;
270	}	528	}
271
272
273	PUTBACK;
274	call_sv (req->callback, G_VOID | G_EVAL);
275	SPAGAIN;
276
277	FREETMPS;
278	LEAVE;
279
280	errno = errorno;
281		529
282	if (SvTRUE (ERRSV))	530	if (SvTRUE (ERRSV))
283	{	531	{
284	req_free (req);	532	req_free (req);
285	croak (0);	533	croak (0);
286	}	534	}
287	}	535	}
288		536
289	static void req_free (aio_req req)	537	static void req_free (aio_req req)
290	{	538	{
291	if (req->grp)
292	{
293	aio_req grp = req->grp;
294
295	/* unlink request */
296	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
297	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
298
299	if (grp->grp_first == req)
300	grp->grp_first = req->grp_next;
301
302	aio_grp_dec (grp);
303	}
304
305	if (req->self)	539	if (req->self)
306	{	540	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	541	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	542	SvREFCNT_dec (req->self);
309	}	543	}
310		544
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	545	SvREFCNT_dec (req->fh);
		546	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	547	SvREFCNT_dec (req->sv2);
314	SvREFCNT_dec (req->callback);	548	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316		549
317	if (req->type == REQ_READDIR && req->result >= 0)	550	if (req->flags & FLAG_PTR2_FREE)
318	free (req->data2ptr);	551	free (req->ptr2);
319		552
320	Safefree (req);	553	Safefree (req);
321	}	554	}
322		555
		556	static void req_cancel_subs (aio_req grp)
		557	{
		558	aio_req sub;
		559
		560	if (grp->type != REQ_GROUP)
		561	return;
		562
		563	SvREFCNT_dec (grp->sv2);
		564	grp->sv2 = 0;
		565
		566	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		567	req_cancel (sub);
		568	}
		569
323	static void req_cancel (aio_req req)	570	static void req_cancel (aio_req req)
324	{	571	{
325	req->cancelled = 1;	572	req->flags |= FLAG_CANCELLED;
326		573
327	if (req->type == REQ_GROUP)	574	req_cancel_subs (req);
328	{
329	aio_req sub;
330
331	for (sub = req->grp_first; sub; sub = sub->grp_next)
332	req_cancel (sub);
333	}
334	}
335
336	static int poll_cb ()
337	{
338	dSP;
339	int count = 0;
340	int do_croak = 0;
341	aio_req req;
342
343	for (;;)
344	{
345	pthread_mutex_lock (&reslock);
346	req = ress;
347
348	if (req)
349	{
350	ress = req->next;
351
352	if (!ress)
353	{
354	/* read any signals sent by the worker threads */
355	char buf [32];
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}
361	}
362
363	pthread_mutex_unlock (&reslock);
364
365	if (!req)
366	break;
367
368	--nreqs;
369
370	if (req->type == REQ_QUIT)
371	started--;
372	else if (req->type == REQ_GROUP && req->length)
373	{
374	req->fd = 1; /* mark request as delayed */
375	continue;
376	}
377	else
378	{
379	if (req->type == REQ_READ)
380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
381
382	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
383	SvREADONLY_off (req->data);
384
385	if (req->statdata)
386	{
387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
388	PL_laststatval = req->result;
389	PL_statcache = *(req->statdata);
390	}
391
392	req_invoke (req);
393
394	count++;
395	}
396
397	req_free (req);
398	}
399
400	return count;
401	}	575	}
402		576
403	static void *aio_proc(void *arg);	577	static void *aio_proc(void *arg);
404		578
405	static void start_thread (void)	579	static void start_thread (void)
406	{	580	{
407	sigset_t fullsigset, oldsigset;	581	sigset_t fullsigset, oldsigset;
408	pthread_t tid;
409	pthread_attr_t attr;	582	pthread_attr_t attr;
		583
		584	worker *wrk = calloc (1, sizeof (worker));
		585
		586	if (!wrk)
		587	croak ("unable to allocate worker thread data");
410		588
411	pthread_attr_init (&attr);	589	pthread_attr_init (&attr);
412	pthread_attr_setstacksize (&attr, STACKSIZE);	590	pthread_attr_setstacksize (&attr, STACKSIZE);
413	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		592	#ifdef PTHREAD_SCOPE_PROCESS
		593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		594	#endif
414		595
415	sigfillset (&fullsigset);	596	sigfillset (&fullsigset);
		597
		598	LOCK (wrklock);
416	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
417		600
418	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
419	started++;
420
421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
422	}
423
424	static void req_send (aio_req req)
425	{
426	while (started < wanted && nreqs >= started)
427	start_thread ();
428
429	++nreqs;
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{	602	{
437	reqe->next = req;	603	wrk->prev = &wrk_first;
438	reqe = req;	604	wrk->next = wrk_first.next;
		605	wrk_first.next->prev = wrk;
		606	wrk_first.next = wrk;
		607	++started;
439	}	608	}
440	else	609	else
441	reqe = reqs = req;	610	free (wrk);
442		611
		612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		613	UNLOCK (wrklock);
		614	}
		615
		616	static void maybe_start_thread ()
		617	{
		618	if (get_nthreads () >= wanted)
		619	return;
		620
		621	/* todo: maybe use idle here, but might be less exact */
		622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		623	return;
		624
		625	start_thread ();
		626	}
		627
		628	static void req_send (aio_req req)
		629	{
		630	++nreqs;
		631
		632	LOCK (reqlock);
		633	++nready;
		634	reqq_push (&req_queue, req);
443	pthread_cond_signal (&reqwait);	635	pthread_cond_signal (&reqwait);
444	pthread_mutex_unlock (&reqlock);	636	UNLOCK (reqlock);
445		637
446	if (nreqs > max_outstanding)	638	maybe_start_thread ();
447	for (;;)
448	{
449	poll_cb ();
450
451	if (nreqs <= max_outstanding)
452	break;
453
454	poll_wait ();
455	}
456	}	639	}
457		640
458	static void end_thread (void)	641	static void end_thread (void)
459	{	642	{
460	aio_req req;	643	aio_req req;
		644
461	Newz (0, req, 1, aio_cb);	645	Newz (0, req, 1, aio_cb);
		646
462	req->type = REQ_QUIT;	647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
463		649
464	req_send (req);	650	LOCK (reqlock);
		651	reqq_push (&req_queue, req);
		652	pthread_cond_signal (&reqwait);
		653	UNLOCK (reqlock);
		654
		655	LOCK (wrklock);
		656	--started;
		657	UNLOCK (wrklock);
		658	}
		659
		660	static void set_max_idle (int nthreads)
		661	{
		662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		663	max_idle = nthreads <= 0 ? 1 : nthreads;
		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
465	}	665	}
466		666
467	static void min_parallel (int nthreads)	667	static void min_parallel (int nthreads)
468	{	668	{
469	if (wanted < nthreads)	669	if (wanted < nthreads)
470	wanted = nthreads;	670	wanted = nthreads;
471	}	671	}
472		672
473	static void max_parallel (int nthreads)	673	static void max_parallel (int nthreads)
474	{	674	{
475	int cur = started;
476
477	if (wanted > nthreads)	675	if (wanted > nthreads)
478	wanted = nthreads;	676	wanted = nthreads;
479		677
480	while (cur > wanted)	678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
481	{	687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
482	end_thread ();	696	maybe_start_thread ();
483	cur--;	697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
484	}	702	}
		703	}
485		704
486	while (started > wanted)	705	static int poll_cb ()
		706	{
		707	dSP;
		708	int count = 0;
		709	int maxreqs = max_poll_reqs;
		710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
		712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	for (;;)
487	{	718	{
		719	for (;;)
		720	{
		721	maybe_start_thread ();
		722
		723	LOCK (reslock);
		724	req = reqq_shift (&res_queue);
		725
		726	if (req)
		727	{
		728	--npending;
		729
		730	if (!res_queue.size)
		731	{
		732	/* read any signals sent by the worker threads */
		733	char buf [32];
		734	while (read (respipe [0], buf, 32) == 32)
		735	;
		736	}
		737	}
		738
		739	UNLOCK (reslock);
		740
		741	if (!req)
		742	break;
		743
		744	--nreqs;
		745
		746	if (req->type == REQ_GROUP && req->size)
		747	{
		748	req->int1 = 1; /* mark request as delayed */
		749	continue;
		750	}
		751	else
		752	{
		753	req_invoke (req);
		754
		755	count++;
		756	}
		757
		758	req_free (req);
		759
		760	if (maxreqs && !--maxreqs)
		761	break;
		762
		763	if (max_poll_time)
		764	{
		765	gettimeofday (&tv_now, 0);
		766
		767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		768	break;
		769	}
		770	}
		771
		772	if (nreqs <= max_outstanding)
		773	break;
		774
488	poll_wait ();	775	poll_wait ();
489	poll_cb ();	776
		777	++maxreqs;
490	}	778	}
		779
		780	return count;
491	}	781	}
492		782
493	static void create_pipe ()	783	static void create_pipe ()
494	{	784	{
495	if (pipe (respipe))	785	if (pipe (respipe))
…		…
519	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
520	{	810	{
521	ssize_t res;	811	ssize_t res;
522	off_t ooffset;	812	off_t ooffset;
523		813
524	pthread_mutex_lock (&preadwritelock);	814	LOCK (preadwritelock);
525	ooffset = lseek (fd, 0, SEEK_CUR);	815	ooffset = lseek (fd, 0, SEEK_CUR);
526	lseek (fd, offset, SEEK_SET);	816	lseek (fd, offset, SEEK_SET);
527	res = read (fd, buf, count);	817	res = read (fd, buf, count);
528	lseek (fd, ooffset, SEEK_SET);	818	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);	819	UNLOCK (preadwritelock);
530		820
531	return res;	821	return res;
532	}	822	}
533		823
534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
535	{	825	{
536	ssize_t res;	826	ssize_t res;
537	off_t ooffset;	827	off_t ooffset;
538		828
539	pthread_mutex_lock (&preadwritelock);	829	LOCK (preadwritelock);
540	ooffset = lseek (fd, 0, SEEK_CUR);	830	ooffset = lseek (fd, 0, SEEK_CUR);
541	lseek (fd, offset, SEEK_SET);	831	lseek (fd, offset, SEEK_SET);
542	res = write (fd, buf, count);	832	res = write (fd, buf, count);
543	lseek (fd, offset, SEEK_SET);	833	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);	834	UNLOCK (preadwritelock);
545		835
546	return res;	836	return res;
547	}	837	}
548	#endif	838	#endif
549		839
550	#if !HAVE_FDATASYNC	840	#if !HAVE_FDATASYNC
551	# define fdatasync fsync	841	# define fdatasync fsync
552	#endif	842	#endif
553		843
554	#if !HAVE_READAHEAD	844	#if !HAVE_READAHEAD
555	# define readahead aio_readahead	845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
556		846
557	static ssize_t readahead (int fd, off_t offset, size_t count)	847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
558	{	848	{
559	char readahead_buf[4096];	849	dBUF;
560		850
561	while (count > 0)	851	while (count > 0)
562	{	852	{
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
564		854
565	pread (fd, readahead_buf, len, offset);	855	pread (fd, aio_buf, len, offset);
566	offset += len;	856	offset += len;
567	count -= len;	857	count -= len;
568	}	858	}
569		859
570	errno = 0;	860	errno = 0;
571	}	861	}
		862
572	#endif	863	#endif
573		864
574	#if !HAVE_READDIR_R	865	#if !HAVE_READDIR_R
575	# define readdir_r aio_readdir_r	866	# define readdir_r aio_readdir_r
576		867
…		…
579	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
580	{	871	{
581	struct dirent *e;	872	struct dirent *e;
582	int errorno;	873	int errorno;
583		874
584	pthread_mutex_lock (&readdirlock);	875	LOCK (readdirlock);
585		876
586	e = readdir (dirp);	877	e = readdir (dirp);
587	errorno = errno;	878	errorno = errno;
588		879
589	if (e)	880	if (e)
…		…
592	strcpy (ent->d_name, e->d_name);	883	strcpy (ent->d_name, e->d_name);
593	}	884	}
594	else	885	else
595	*res = 0;	886	*res = 0;
596		887
597	pthread_mutex_unlock (&readdirlock);	888	UNLOCK (readdirlock);
598		889
599	errno = errorno;	890	errno = errorno;
600	return e ? 0 : -1;	891	return e ? 0 : -1;
601	}	892	}
602	#endif	893	#endif
603		894
604	/* sendfile always needs emulation */	895	/* sendfile always needs emulation */
605	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
606	{	897	{
607	ssize_t res;	898	ssize_t res;
608		899
609	if (!count)	900	if (!count)
610	return 0;	901	return 0;
…		…
621	{	912	{
622	off_t sbytes;	913	off_t sbytes;
623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
624		915
625	if (res < 0 && sbytes)	916	if (res < 0 && sbytes)
626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
627	res = sbytes;	918	res = sbytes;
628	}	919	}
629		920
630	# elif __hpux	921	# elif __hpux
631	res = sendfile (ofd, ifd, offset, count, 0, 0);	922	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
659	#endif	950	#endif
660	)	951	)
661	)	952	)
662	{	953	{
663	/* emulate sendfile. this is a major pain in the ass */	954	/* emulate sendfile. this is a major pain in the ass */
664	char buf[4096];	955	dBUF;
		956
665	res = 0;	957	res = 0;
666		958
667	while (count)	959	while (count)
668	{	960	{
669	ssize_t cnt;	961	ssize_t cnt;
670		962
671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
672		964
673	if (cnt <= 0)	965	if (cnt <= 0)
674	{	966	{
675	if (cnt && !res) res = -1;	967	if (cnt && !res) res = -1;
676	break;	968	break;
677	}	969	}
678		970
679	cnt = write (ofd, buf, cnt);	971	cnt = write (ofd, aio_buf, cnt);
680		972
681	if (cnt <= 0)	973	if (cnt <= 0)
682	{	974	{
683	if (cnt && !res) res = -1;	975	if (cnt && !res) res = -1;
684	break;	976	break;
…		…
692		984
693	return res;	985	return res;
694	}	986	}
695		987
696	/* read a full directory */	988	/* read a full directory */
697	static int scandir_ (const char *path, void **namesp)	989	static void scandir_ (aio_req req, worker *self)
698	{	990	{
699	DIR *dirp = opendir (path);	991	DIR *dirp;
700	union	992	union
701	{	993	{
702	struct dirent d;	994	struct dirent d;
703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
704	} u;	996	} *u;
705	struct dirent *entp;	997	struct dirent *entp;
706	char *name, *names;	998	char *name, *names;
707	int memlen = 4096;	999	int memlen = 4096;
708	int memofs = 0;	1000	int memofs = 0;
709	int res = 0;	1001	int res = 0;
710	int errorno;	1002	int errorno;
711		1003
712	if (!dirp)	1004	LOCK (wrklock);
713	return -1;	1005	self->dirp = dirp = opendir (req->ptr1);
714		1006	self->dbuf = u = malloc (sizeof (*u));
		1007	req->flags |= FLAG_PTR2_FREE;
715	names = malloc (memlen);	1008	req->ptr2 = names = malloc (memlen);
		1009	UNLOCK (wrklock);
		1010
		1011	if (dirp && u && names)
		1012	for (;;)
		1013	{
		1014	errno = 0;
		1015	readdir_r (dirp, &u->d, &entp);
		1016
		1017	if (!entp)
		1018	break;
		1019
		1020	name = entp->d_name;
		1021
		1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1023	{
		1024	int len = strlen (name) + 1;
		1025
		1026	res++;
		1027
		1028	while (memofs + len > memlen)
		1029	{
		1030	memlen *= 2;
		1031	LOCK (wrklock);
		1032	req->ptr2 = names = realloc (names, memlen);
		1033	UNLOCK (wrklock);
		1034
		1035	if (!names)
		1036	break;
		1037	}
		1038
		1039	memcpy (names + memofs, name, len);
		1040	memofs += len;
		1041	}
		1042	}
		1043
		1044	if (errno)
		1045	res = -1;
		1046
		1047	req->result = res;
		1048	}
		1049
		1050	/*****************************************************************************/
		1051
		1052	static void *aio_proc (void *thr_arg)
		1053	{
		1054	aio_req req;
		1055	struct timespec ts;
		1056	worker *self = (worker *)thr_arg;
		1057
		1058	/* try to distribute timeouts somewhat evenly */
		1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1060	* (1000000000UL / 1024UL);
716		1061
717	for (;;)	1062	for (;;)
718	{	1063	{
719	errno = 0, readdir_r (dirp, &u.d, &entp);	1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
720		1065
721	if (!entp)	1066	LOCK (reqlock);
722	break;
723
724	name = entp->d_name;
725
726	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
727	{
728	int len = strlen (name) + 1;
729
730	res++;
731
732	while (memofs + len > memlen)
733	{
734	memlen *= 2;
735	names = realloc (names, memlen);
736	if (!names)
737	break;
738	}
739
740	memcpy (names + memofs, name, len);
741	memofs += len;
742	}
743	}
744
745	errorno = errno;
746	closedir (dirp);
747
748	if (errorno)
749	{
750	free (names);
751	errno = errorno;
752	res = -1;
753	}
754
755	*namesp = (void *)names;
756	return res;
757	}
758
759	/*****************************************************************************/
760
761	static void *aio_proc (void *thr_arg)
762	{
763	aio_req req;
764	int type;
765
766	do
767	{
768	pthread_mutex_lock (&reqlock);
769		1067
770	for (;;)	1068	for (;;)
771	{	1069	{
772	req = reqs;	1070	self->req = req = reqq_shift (&req_queue);
773
774	if (reqs)
775	{
776	reqs = reqs->next;
777	if (!reqs) reqe = 0;
778	}
779		1071
780	if (req)	1072	if (req)
781	break;	1073	break;
782		1074
		1075	++idle;
		1076
		1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1078	== ETIMEDOUT)
		1079	{
		1080	if (idle > max_idle)
		1081	{
		1082	--idle;
		1083	UNLOCK (reqlock);
		1084	LOCK (wrklock);
		1085	--started;
		1086	UNLOCK (wrklock);
		1087	goto quit;
		1088	}
		1089
		1090	/* we are allowed to idle, so do so without any timeout */
783	pthread_cond_wait (&reqwait, &reqlock);	1091	pthread_cond_wait (&reqwait, &reqlock);
		1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1093	}
		1094
		1095	--idle;
784	}	1096	}
785		1097
786	pthread_mutex_unlock (&reqlock);	1098	--nready;
		1099
		1100	UNLOCK (reqlock);
787		1101
788	errno = 0; /* strictly unnecessary */	1102	errno = 0; /* strictly unnecessary */
789		1103
790	if (!req->cancelled)	1104	if (!(req->flags & FLAG_CANCELLED))
791	switch (type = req->type) /* remember type for QUIT check */	1105	switch (req->type)
792	{	1106	{
793	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
794	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
795		1109
796	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
797	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
798		1112
799	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
800	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
801	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
802		1116
803	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
804	case REQ_CLOSE: req->result = close (req->fd); break;	1118	case REQ_CLOSE: req->result = close (req->int1); break;
805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
806	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
809	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
810		1126
811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
812	case REQ_FSYNC: req->result = fsync (req->fd); break;	1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1129	case REQ_READDIR: scandir_ (req, self); break;
814		1130
815	case REQ_SLEEP:	1131	case REQ_BUSY:
816	{	1132	{
817	struct timeval tv;	1133	struct timeval tv;
818		1134
819	tv.tv_sec = req->fd;	1135	tv.tv_sec = req->int1;
820	tv.tv_usec = req->fd2;	1136	tv.tv_usec = req->int2;
821		1137
822	req->result = select (0, 0, 0, 0, &tv);	1138	req->result = select (0, 0, 0, 0, &tv);
823	}	1139	}
824		1140
		1141	case REQ_GROUP:
		1142	case REQ_NOP:
		1143	break;
		1144
825	case REQ_QUIT:	1145	case REQ_QUIT:
826	break;	1146	goto quit;
827		1147
828	default:	1148	default:
829	req->result = ENOSYS;	1149	req->result = ENOSYS;
830	break;	1150	break;
831	}	1151	}
832		1152
833	req->errorno = errno;	1153	req->errorno = errno;
834		1154
835	pthread_mutex_lock (&reslock);	1155	LOCK (reslock);
836		1156
837	req->next = 0;	1157	++npending;
838		1158
839	if (rese)	1159	if (!reqq_push (&res_queue, req))
840	{
841	rese->next = req;
842	rese = req;
843	}
844	else
845	{
846	rese = ress = req;
847
848	/* write a dummy byte to the pipe so fh becomes ready */	1160	/* write a dummy byte to the pipe so fh becomes ready */
849	write (respipe [1], &respipe, 1);	1161	write (respipe [1], &respipe, 1);
850	}
851		1162
852	pthread_mutex_unlock (&reslock);	1163	self->req = 0;
		1164	worker_clear (self);
		1165
		1166	UNLOCK (reslock);
853	}	1167	}
854	while (type != REQ_QUIT);	1168
		1169	quit:
		1170	LOCK (wrklock);
		1171	worker_free (self);
		1172	UNLOCK (wrklock);
855		1173
856	return 0;	1174	return 0;
857	}	1175	}
858		1176
859	/*****************************************************************************/	1177	/*****************************************************************************/
860		1178
861	static void atfork_prepare (void)	1179	static void atfork_prepare (void)
862	{	1180	{
863	pthread_mutex_lock (&reqlock);	1181	LOCK (wrklock);
864	pthread_mutex_lock (&reslock);	1182	LOCK (reqlock);
		1183	LOCK (reslock);
865	#if !HAVE_PREADWRITE	1184	#if !HAVE_PREADWRITE
866	pthread_mutex_lock (&preadwritelock);	1185	LOCK (preadwritelock);
867	#endif	1186	#endif
868	#if !HAVE_READDIR_R	1187	#if !HAVE_READDIR_R
869	pthread_mutex_lock (&readdirlock);	1188	LOCK (readdirlock);
870	#endif	1189	#endif
871	}	1190	}
872		1191
873	static void atfork_parent (void)	1192	static void atfork_parent (void)
874	{	1193	{
875	#if !HAVE_READDIR_R	1194	#if !HAVE_READDIR_R
876	pthread_mutex_unlock (&readdirlock);	1195	UNLOCK (readdirlock);
877	#endif	1196	#endif
878	#if !HAVE_PREADWRITE	1197	#if !HAVE_PREADWRITE
879	pthread_mutex_unlock (&preadwritelock);	1198	UNLOCK (preadwritelock);
880	#endif	1199	#endif
881	pthread_mutex_unlock (&reslock);	1200	UNLOCK (reslock);
882	pthread_mutex_unlock (&reqlock);	1201	UNLOCK (reqlock);
		1202	UNLOCK (wrklock);
883	}	1203	}
884		1204
885	static void atfork_child (void)	1205	static void atfork_child (void)
886	{	1206	{
887	aio_req prv;	1207	aio_req prv;
888		1208
889	started = 0;	1209	while (prv = reqq_shift (&req_queue))
		1210	req_free (prv);
890		1211
891	while (reqs)	1212	while (prv = reqq_shift (&res_queue))
		1213	req_free (prv);
		1214
		1215	while (wrk_first.next != &wrk_first)
892	{	1216	{
893	prv = reqs;	1217	worker *wrk = wrk_first.next;
894	reqs = prv->next;	1218
		1219	if (wrk->req)
		1220	req_free (wrk->req);
		1221
		1222	worker_clear (wrk);
895	req_free (prv);	1223	worker_free (wrk);
896	}	1224	}
897		1225
898	reqs = reqe = 0;	1226	started = 0;
899		1227	idle = 0;
900	while (ress)	1228	nreqs = 0;
901	{	1229	nready = 0;
902	prv = ress;	1230	npending = 0;
903	ress = prv->next;
904	req_free (prv);
905	}
906
907	ress = rese = 0;
908		1231
909	close (respipe [0]);	1232	close (respipe [0]);
910	close (respipe [1]);	1233	close (respipe [1]);
911	create_pipe ();	1234	create_pipe ();
912		1235
913	atfork_parent ();	1236	atfork_parent ();
914	}	1237	}
915		1238
916	#define dREQ \	1239	#define dREQ \
917	aio_req req; \	1240	aio_req req; \
		1241	int req_pri = next_pri; \
		1242	next_pri = DEFAULT_PRI + PRI_BIAS; \
918	\	1243	\
919	if (SvOK (callback) && !SvROK (callback)) \	1244	if (SvOK (callback) && !SvROK (callback)) \
920	croak ("callback must be undef or of reference type"); \	1245	croak ("callback must be undef or of reference type"); \
921	\	1246	\
922	Newz (0, req, 1, aio_cb); \	1247	Newz (0, req, 1, aio_cb); \
923	if (!req) \	1248	if (!req) \
924	croak ("out of memory during aio_req allocation"); \	1249	croak ("out of memory during aio_req allocation"); \
925	\	1250	\
926	req->callback = newSVsv (callback)	1251	req->callback = newSVsv (callback); \
		1252	req->pri = req_pri
927		1253
928	#define REQ_SEND \	1254	#define REQ_SEND \
929	req_send (req); \	1255	req_send (req); \
930	\	1256	\
931	if (GIMME_V != G_VOID) \	1257	if (GIMME_V != G_VOID) \
…		…
936	PROTOTYPES: ENABLE	1262	PROTOTYPES: ENABLE
937		1263
938	BOOT:	1264	BOOT:
939	{	1265	{
940	HV *stash = gv_stashpv ("IO::AIO", 1);	1266	HV *stash = gv_stashpv ("IO::AIO", 1);
		1267
941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
943	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
944		1274
945	create_pipe ();	1275	create_pipe ();
946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
947	}	1277	}
948		1278
949	void	1279	void
950	min_parallel (nthreads)	1280	max_poll_reqs (int nreqs)
951	int nthreads
952	PROTOTYPE: $	1281	PROTOTYPE: $
		1282	CODE:
		1283	max_poll_reqs = nreqs;
953		1284
954	void	1285	void
955	max_parallel (nthreads)	1286	max_poll_time (double nseconds)
956	int nthreads
957	PROTOTYPE: $	1287	PROTOTYPE: $
		1288	CODE:
		1289	max_poll_time = nseconds * AIO_TICKS;
		1290
		1291	void
		1292	min_parallel (int nthreads)
		1293	PROTOTYPE: $
		1294
		1295	void
		1296	max_parallel (int nthreads)
		1297	PROTOTYPE: $
		1298
		1299	void
		1300	max_idle (int nthreads)
		1301	PROTOTYPE: $
		1302	CODE:
		1303	set_max_idle (nthreads);
958		1304
959	int	1305	int
960	max_outstanding (nreqs)	1306	max_outstanding (int maxreqs)
961	int nreqs	1307	PROTOTYPE: $
962	PROTOTYPE: $
963	CODE:	1308	CODE:
964	RETVAL = max_outstanding;	1309	RETVAL = max_outstanding;
965	max_outstanding = nreqs;	1310	max_outstanding = maxreqs;
		1311	OUTPUT:
		1312	RETVAL
966		1313
967	void	1314	void
968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
969	SV * pathname	1316	SV8 * pathname
970	int flags	1317	int flags
971	int mode	1318	int mode
972	SV * callback	1319	SV * callback
973	PROTOTYPE: $$$;$	1320	PROTOTYPE: $$$;$
974	PPCODE:	1321	PPCODE:
975	{	1322	{
976	dREQ;	1323	dREQ;
977		1324
978	req->type = REQ_OPEN;	1325	req->type = REQ_OPEN;
979	req->data = newSVsv (pathname);	1326	req->sv1 = newSVsv (pathname);
980	req->dataptr = SvPVbyte_nolen (req->data);	1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
981	req->fd = flags;	1328	req->int1 = flags;
982	req->mode = mode;	1329	req->mode = mode;
983		1330
984	REQ_SEND;	1331	REQ_SEND;
985	}	1332	}
986		1333
…		…
996	PPCODE:	1343	PPCODE:
997	{	1344	{
998	dREQ;	1345	dREQ;
999		1346
1000	req->type = ix;	1347	req->type = ix;
1001	req->fh = newSVsv (fh);	1348	req->fh = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1003		1350
1004	REQ_SEND (req);	1351	REQ_SEND (req);
1005	}	1352	}
1006		1353
1007	void	1354	void
1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1009	SV * fh	1356	SV * fh
1010	UV offset	1357	UV offset
1011	UV length	1358	UV length
1012	SV * data	1359	SV8 * data
1013	UV dataoffset	1360	UV dataoffset
1014	SV * callback	1361	SV * callback
1015	ALIAS:	1362	ALIAS:
1016	aio_read = REQ_READ	1363	aio_read = REQ_READ
1017	aio_write = REQ_WRITE	1364	aio_write = REQ_WRITE
1018	PROTOTYPE: $$$$$;$	1365	PROTOTYPE: $$$$$;$
1019	PPCODE:	1366	PPCODE:
1020	{	1367	{
1021	aio_req req;
1022	STRLEN svlen;	1368	STRLEN svlen;
1023	char *svptr = SvPVbyte (data, svlen);	1369	char *svptr = SvPVbyte (data, svlen);
1024		1370
1025	SvUPGRADE (data, SVt_PV);	1371	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);	1372	SvPOK_on (data);
…		…
1048		1394
1049	{	1395	{
1050	dREQ;	1396	dREQ;
1051		1397
1052	req->type = ix;	1398	req->type = ix;
1053	req->fh = newSVsv (fh);	1399	req->fh = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1055	: IoOFP (sv_2io (fh)));	1401	: IoOFP (sv_2io (fh)));
1056	req->offset = offset;	1402	req->offs = offset;
1057	req->length = length;	1403	req->size = length;
1058	req->data = SvREFCNT_inc (data);	1404	req->sv1 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	1405	req->ptr1 = (char *)svptr + dataoffset;
		1406	req->stroffset = dataoffset;
1060		1407
1061	if (!SvREADONLY (data))	1408	if (!SvREADONLY (data))
1062	{	1409	{
1063	SvREADONLY_on (data);	1410	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	1411	req->flags |= FLAG_SV1_RO_OFF;
1065	}	1412	}
1066		1413
1067	REQ_SEND;	1414	REQ_SEND;
1068	}	1415	}
		1416	}
		1417
		1418	void
		1419	aio_readlink (path,callback=&PL_sv_undef)
		1420	SV8 * path
		1421	SV * callback
		1422	PROTOTYPE: $$;$
		1423	PPCODE:
		1424	{
		1425	SV *data;
		1426	dREQ;
		1427
		1428	data = newSV (NAME_MAX);
		1429	SvPOK_on (data);
		1430
		1431	req->type = REQ_READLINK;
		1432	req->fh = newSVsv (path);
		1433	req->ptr2 = SvPVbyte_nolen (req->fh);
		1434	req->sv1 = data;
		1435	req->ptr1 = SvPVbyte_nolen (data);
		1436
		1437	REQ_SEND;
1069	}	1438	}
1070		1439
1071	void	1440	void
1072	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1073	SV * out_fh	1442	SV * out_fh
…		…
1079	PPCODE:	1448	PPCODE:
1080	{	1449	{
1081	dREQ;	1450	dREQ;
1082		1451
1083	req->type = REQ_SENDFILE;	1452	req->type = REQ_SENDFILE;
1084	req->fh = newSVsv (out_fh);	1453	req->fh = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1086	req->fh2 = newSVsv (in_fh);	1455	req->sv2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1088	req->offset = in_offset;	1457	req->offs = in_offset;
1089	req->length = length;	1458	req->size = length;
1090		1459
1091	REQ_SEND;	1460	REQ_SEND;
1092	}	1461	}
1093		1462
1094	void	1463	void
…		…
1101	PPCODE:	1470	PPCODE:
1102	{	1471	{
1103	dREQ;	1472	dREQ;
1104		1473
1105	req->type = REQ_READAHEAD;	1474	req->type = REQ_READAHEAD;
1106	req->fh = newSVsv (fh);	1475	req->fh = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1108	req->offset = offset;	1477	req->offs = offset;
1109	req->length = length;	1478	req->size = length;
1110		1479
1111	REQ_SEND;	1480	REQ_SEND;
1112	}	1481	}
1113		1482
1114	void	1483	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)	1484	aio_stat (fh_or_path,callback=&PL_sv_undef)
1116	SV * fh_or_path	1485	SV8 * fh_or_path
1117	SV * callback	1486	SV * callback
1118	ALIAS:	1487	ALIAS:
1119	aio_stat = REQ_STAT	1488	aio_stat = REQ_STAT
1120	aio_lstat = REQ_LSTAT	1489	aio_lstat = REQ_LSTAT
1121	PPCODE:	1490	PPCODE:
1122	{	1491	{
1123	dREQ;	1492	dREQ;
1124		1493
1125	New (0, req->statdata, 1, Stat_t);	1494	req->ptr2 = malloc (sizeof (Stat_t));
1126	if (!req->statdata)	1495	if (!req->ptr2)
1127	{	1496	{
1128	req_free (req);	1497	req_free (req);
1129	croak ("out of memory during aio_req->statdata allocation");	1498	croak ("out of memory during aio_stat statdata allocation");
1130	}	1499	}
		1500
		1501	req->flags |= FLAG_PTR2_FREE;
1131		1502
1132	if (SvPOK (fh_or_path))	1503	if (SvPOK (fh_or_path))
1133	{	1504	{
1134	req->type = ix;	1505	req->type = ix;
1135	req->data = newSVsv (fh_or_path);	1506	req->sv1 = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);	1507	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	}	1508	}
1138	else	1509	else
1139	{	1510	{
1140	req->type = REQ_FSTAT;	1511	req->type = REQ_FSTAT;
1141	req->fh = newSVsv (fh_or_path);	1512	req->fh = newSVsv (fh_or_path);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143	}	1514	}
1144		1515
1145	REQ_SEND;	1516	REQ_SEND;
1146	}	1517	}
1147		1518
1148	void	1519	void
1149	aio_unlink (pathname,callback=&PL_sv_undef)	1520	aio_unlink (pathname,callback=&PL_sv_undef)
1150	SV * pathname	1521	SV8 * pathname
1151	SV * callback	1522	SV * callback
1152	ALIAS:	1523	ALIAS:
1153	aio_unlink = REQ_UNLINK	1524	aio_unlink = REQ_UNLINK
1154	aio_rmdir = REQ_RMDIR	1525	aio_rmdir = REQ_RMDIR
1155	aio_readdir = REQ_READDIR	1526	aio_readdir = REQ_READDIR
1156	PPCODE:	1527	PPCODE:
1157	{	1528	{
1158	dREQ;	1529	dREQ;
1159		1530
1160	req->type = ix;	1531	req->type = ix;
1161	req->data = newSVsv (pathname);	1532	req->sv1 = newSVsv (pathname);
1162	req->dataptr = SvPVbyte_nolen (req->data);	1533	req->ptr1 = SvPVbyte_nolen (req->sv1);
1163		1534
1164	REQ_SEND;	1535	REQ_SEND;
1165	}	1536	}
1166		1537
1167	void	1538	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1169	SV * oldpath	1540	SV8 * oldpath
1170	SV * newpath	1541	SV8 * newpath
1171	SV * callback	1542	SV * callback
1172	ALIAS:	1543	ALIAS:
1173	aio_link = REQ_LINK	1544	aio_link = REQ_LINK
1174	aio_symlink = REQ_SYMLINK	1545	aio_symlink = REQ_SYMLINK
1175	aio_rename = REQ_RENAME	1546	aio_rename = REQ_RENAME
1176	PPCODE:	1547	PPCODE:
1177	{	1548	{
1178	dREQ;	1549	dREQ;
1179		1550
1180	req->type = ix;	1551	req->type = ix;
1181	req->fh = newSVsv (oldpath);	1552	req->fh = newSVsv (oldpath);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1183	req->data = newSVsv (newpath);	1554	req->sv1 = newSVsv (newpath);
1184	req->dataptr = SvPVbyte_nolen (req->data);	1555	req->ptr1 = SvPVbyte_nolen (req->sv1);
1185		1556
1186	REQ_SEND;	1557	REQ_SEND;
1187	}	1558	}
1188		1559
1189	void	1560	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1191	double delay	1562	SV8 * pathname
1192	SV * callback	1563	SV * callback
		1564	UV mode
		1565	UV dev
1193	PPCODE:	1566	PPCODE:
1194	{	1567	{
1195	dREQ;	1568	dREQ;
		1569
		1570	req->type = REQ_MKNOD;
		1571	req->sv1 = newSVsv (pathname);
		1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1573	req->mode = (mode_t)mode;
		1574	req->offs = dev;
		1575
		1576	REQ_SEND;
		1577	}
1196		1578
		1579	void
		1580	aio_busy (delay,callback=&PL_sv_undef)
		1581	double delay
		1582	SV * callback
		1583	PPCODE:
		1584	{
		1585	dREQ;
		1586
1197	req->type = REQ_SLEEP;	1587	req->type = REQ_BUSY;
1198	req->fd = delay < 0. ? 0 : delay;	1588	req->int1 = delay < 0. ? 0 : delay;
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1200		1590
1201	REQ_SEND;	1591	REQ_SEND;
1202	}	1592	}
1203		1593
1204	void	1594	void
…		…
1206	SV * callback	1596	SV * callback
1207	PROTOTYPE: ;$	1597	PROTOTYPE: ;$
1208	PPCODE:	1598	PPCODE:
1209	{	1599	{
1210	dREQ;	1600	dREQ;
		1601
1211	req->type = REQ_GROUP;	1602	req->type = REQ_GROUP;
		1603
1212	req_send (req);	1604	req_send (req);
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1214	}	1606	}
		1607
		1608	void
		1609	aio_nop (callback=&PL_sv_undef)
		1610	SV * callback
		1611	PPCODE:
		1612	{
		1613	dREQ;
		1614
		1615	req->type = REQ_NOP;
		1616
		1617	REQ_SEND;
		1618	}
		1619
		1620	int
		1621	aioreq_pri (int pri = 0)
		1622	PROTOTYPE: ;$
		1623	CODE:
		1624	RETVAL = next_pri - PRI_BIAS;
		1625	if (items > 0)
		1626	{
		1627	if (pri < PRI_MIN) pri = PRI_MIN;
		1628	if (pri > PRI_MAX) pri = PRI_MAX;
		1629	next_pri = pri + PRI_BIAS;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634	void
		1635	aioreq_nice (int nice = 0)
		1636	CODE:
		1637	nice = next_pri - nice;
		1638	if (nice < PRI_MIN) nice = PRI_MIN;
		1639	if (nice > PRI_MAX) nice = PRI_MAX;
		1640	next_pri = nice + PRI_BIAS;
1215		1641
1216	void	1642	void
1217	flush ()	1643	flush ()
1218	PROTOTYPE:	1644	PROTOTYPE:
1219	CODE:	1645	CODE:
…		…
1221	{	1647	{
1222	poll_wait ();	1648	poll_wait ();
1223	poll_cb ();	1649	poll_cb ();
1224	}	1650	}
1225		1651
1226	void	1652	int
1227	poll()	1653	poll()
1228	PROTOTYPE:	1654	PROTOTYPE:
1229	CODE:	1655	CODE:
1230	if (nreqs)	1656	if (nreqs)
1231	{	1657	{
1232	poll_wait ();	1658	poll_wait ();
1233	poll_cb ();	1659	RETVAL = poll_cb ();
1234	}	1660	}
		1661	else
		1662	RETVAL = 0;
		1663	OUTPUT:
		1664	RETVAL
1235		1665
1236	int	1666	int
1237	poll_fileno()	1667	poll_fileno()
1238	PROTOTYPE:	1668	PROTOTYPE:
1239	CODE:	1669	CODE:
…		…
1262	CODE:	1692	CODE:
1263	RETVAL = nreqs;	1693	RETVAL = nreqs;
1264	OUTPUT:	1694	OUTPUT:
1265	RETVAL	1695	RETVAL
1266		1696
1267	PROTOTYPES: DISABLE	1697	int
1268		1698	nready()
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270
1271	void
1272	cancel (aio_req_ornot req)
1273	PROTOTYPE:	1699	PROTOTYPE:
1274	CODE:	1700	CODE:
		1701	RETVAL = get_nready ();
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
		1706	npending()
		1707	PROTOTYPE:
		1708	CODE:
		1709	RETVAL = get_npending ();
		1710	OUTPUT:
		1711	RETVAL
		1712
		1713	int
		1714	nthreads()
		1715	PROTOTYPE:
		1716	CODE:
		1717	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1718	RETVAL = started;
		1719	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1720	OUTPUT:
		1721	RETVAL
		1722
		1723	PROTOTYPES: DISABLE
		1724
		1725	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1726
		1727	void
		1728	cancel (aio_req_ornot req)
		1729	CODE:
1275	req_cancel (req);	1730	req_cancel (req);
		1731
		1732	void
		1733	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1734	CODE:
		1735	SvREFCNT_dec (req->callback);
		1736	req->callback = newSVsv (callback);
1276		1737
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1738	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		1739
1279	void	1740	void
1280	add (aio_req grp, ...)	1741	add (aio_req grp, ...)
1281	PPCODE:	1742	PPCODE:
1282	{	1743	{
1283	int i;	1744	int i;
1284	aio_req req;	1745	aio_req req;
1285		1746
1286	if (grp->fd == 2)	1747	if (grp->int1 == 2)
1287	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1748	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1288		1749
1289	for (i = 1; i < items; ++i )	1750	for (i = 1; i < items; ++i )
1290	{	1751	{
1291	if (GIMME_V != G_VOID)	1752	if (GIMME_V != G_VOID)
…		…
1293		1754
1294	req = SvAIO_REQ (ST (i));	1755	req = SvAIO_REQ (ST (i));
1295		1756
1296	if (req)	1757	if (req)
1297	{	1758	{
1298	++grp->length;	1759	++grp->size;
1299	req->grp = grp;	1760	req->grp = grp;
1300		1761
1301	req->grp_prev = 0;	1762	req->grp_prev = 0;
1302	req->grp_next = grp->grp_first;	1763	req->grp_next = grp->grp_first;
1303		1764
…		…
1308	}	1769	}
1309	}	1770	}
1310	}	1771	}
1311		1772
1312	void	1773	void
		1774	cancel_subs (aio_req_ornot req)
		1775	CODE:
		1776	req_cancel_subs (req);
		1777
		1778	void
1313	result (aio_req grp, ...)	1779	result (aio_req grp, ...)
1314	CODE:	1780	CODE:
1315	{	1781	{
1316	int i;	1782	int i;
		1783	AV *av;
		1784
		1785	grp->errorno = errno;
		1786
1317	AV *av = newAV ();	1787	av = newAV ();
1318		1788
1319	for (i = 1; i < items; ++i )	1789	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	1790	av_push (av, newSVsv (ST (i)));
1321		1791
1322	SvREFCNT_dec (grp->data);	1792	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	1793	grp->sv1 = (SV *)av;
1324	}	1794	}
1325		1795
1326	void	1796	void
1327	lock (aio_req grp)	1797	errno (aio_req grp, int errorno = errno)
		1798	CODE:
		1799	grp->errorno = errorno;
		1800
		1801	void
		1802	limit (aio_req grp, int limit)
1328	CODE:	1803	CODE:
1329	++grp->length;	1804	grp->int2 = limit;
		1805	aio_grp_feed (grp);
1330		1806
1331	void	1807	void
1332	unlock (aio_req grp)	1808	feed (aio_req grp, SV *callback=&PL_sv_undef)
1333	CODE:	1809	CODE:
1334	aio_grp_dec (grp);	1810	{
		1811	SvREFCNT_dec (grp->sv2);
		1812	grp->sv2 = newSVsv (callback);
1335		1813
1336	void	1814	if (grp->int2 <= 0)
1337	feeder_limit (aio_req grp, int limit)	1815	grp->int2 = 2;
1338	CODE:	1816
1339	grp->fd2 = limit;
1340	aio_grp_feed (grp);	1817	aio_grp_feed (grp);
1341
1342	void
1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1344	CODE:
1345	{
1346	SvREFCNT_dec (grp->fh2);
1347	grp->fh2 = newSVsv (callback);
1348
1349	if (grp->fd2 <= 0)
1350	grp->fd2 = 2;
1351
1352	aio_grp_feed (grp);
1353	}	1818	}
1354		1819

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