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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
38	# define NAME_MAX 4096	49	# define NAME_MAX 4096
39	#endif	50	#endif
40		51
41	#if __ia64	52	#if __ia64
42	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	56	#else
44	# define STACKSIZE 8192	57	# define STACKSIZE 16384
45	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf; \
		65	LOCK (wrklock); \
		66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		67	UNLOCK (wrklock); \
		68	if (!aio_buf) \
		69	return -1;
46		70
47	enum {	71	enum {
48	REQ_QUIT,	72	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	79	REQ_READDIR,
56	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
57	};	83	};
58		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
59	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
60	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
61		91
62	int type;	92	SV *data, *callback;
63		93	SV *fh, *fh2;
64	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
65	int fd, fd2;	95	Stat_t *statdata;
66	off_t offset;	96	off_t offset;
67	size_t length;	97	size_t length;
68	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
69	mode_t mode; /* open */	104	mode_t mode; /* open */
70	int errorno;
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	STRLEN dataoffset;
75		105
76	Stat_t *statdata;	106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV *self; /* the perl counterpart of this request, if any */
		110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
77	} aio_cb;	111	} aio_cb;
78		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
79	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
		119
		120	enum {
		121	PRI_MIN = -4,
		122	PRI_MAX = 4,
		123
		124	DEFAULT_PRI = 0,
		125	PRI_BIAS = -PRI_MIN,
		126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		127	};
		128
		129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
80		130
81	static int started, wanted;	131	static int started, wanted;
82	static volatile int nreqs;	132	static volatile int nreqs;
83	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
84	static int respipe [2];	134	static int respipe [2];
85		135
		136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		138	#else
		139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		140	#endif
		141
		142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		144
		145	/* worker threasd management */
		146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		147
		148	typedef struct worker {
		149	/* locked by wrklock */
		150	struct worker *prev, *next;
		151
		152	pthread_t tid;
		153
		154	/* locked by reslock, reqlock or wrklock */
		155	aio_req req; /* currently processed request */
		156	void *dbuf;
		157	DIR *dirp;
		158	} worker;
		159
		160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		161
		162	static void worker_clear (worker *wrk)
		163	{
		164	if (wrk->dirp)
		165	{
		166	closedir (wrk->dirp);
		167	wrk->dirp = 0;
		168	}
		169
		170	if (wrk->dbuf)
		171	{
		172	free (wrk->dbuf);
		173	wrk->dbuf = 0;
		174	}
		175	}
		176
		177	static void worker_free (worker *wrk)
		178	{
		179	wrk->next->prev = wrk->prev;
		180	wrk->prev->next = wrk->next;
		181
		182	free (wrk);
		183	}
		184
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		188
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
91	static volatile aio_req ress, rese; /* queue start, queue end */	190	* a somewhat faster data structure might be nice, but
		191	* with 8 priorities this actually needs <20 insns
		192	* per shift, the most expensive operation.
		193	*/
		194	typedef struct {
		195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		196	int size;
		197	} reqq;
92		198
		199	static reqq req_queue;
		200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
		203	{
		204	int pri = req->pri;
		205	req->next = 0;
		206
		207	if (q->qe[pri])
		208	{
		209	q->qe[pri]->next = req;
		210	q->qe[pri] = req;
		211	}
		212	else
		213	q->qe[pri] = q->qs[pri] = req;
		214
		215	return q->size++;
		216	}
		217
		218	aio_req reqq_shift (reqq *q)
		219	{
		220	int pri;
		221
		222	if (!q->size)
		223	return 0;
		224
		225	--q->size;
		226
		227	for (pri = NUM_PRI; pri--; )
		228	{
		229	aio_req req = q->qs[pri];
		230
		231	if (req)
		232	{
		233	if (!(q->qs[pri] = req->next))
		234	q->qe[pri] = 0;
		235
		236	return req;
		237	}
		238	}
		239
		240	abort ();
		241	}
		242
		243	static void req_invoke (aio_req req);
93	static void free_req (aio_req req)	244	static void req_free (aio_req req);
94	{	245	static void req_cancel (aio_req req);
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
98	if (req->fh)	250	if (!req->self)
99	SvREFCNT_dec (req->fh);	251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
100		255
101	if (req->fh2)	256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		257	}
		258
		259	static aio_req SvAIO_REQ (SV *sv)
		260	{
		261	MAGIC *mg;
		262
		263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		264	croak ("object of class " AIO_REQ_KLASS " expected");
		265
		266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		267
		268	return mg ? (aio_req)mg->mg_ptr : 0;
		269	}
		270
		271	static void aio_grp_feed (aio_req grp)
		272	{
		273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		274	{
		275	int old_len = grp->length;
		276
		277	if (grp->fh2 && SvOK (grp->fh2))
		278	{
		279	dSP;
		280
		281	ENTER;
		282	SAVETMPS;
		283	PUSHMARK (SP);
		284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		285	PUTBACK;
		286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		287	SPAGAIN;
		288	FREETMPS;
		289	LEAVE;
		290	}
		291
		292	/* stop if no progress has been made */
		293	if (old_len == grp->length)
		294	{
102	SvREFCNT_dec (req->fh2);	295	SvREFCNT_dec (grp->fh2);
103		296	grp->fh2 = 0;
104	if (req->statdata)	297	break;
105	Safefree (req->statdata);	298	}
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);
109
110	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);
112
113	Safefree (req);
114	}
115
116	static void
117	poll_wait ()
118	{
119	if (nreqs && !ress)
120	{	299	}
		300	}
		301
		302	static void aio_grp_dec (aio_req grp)
		303	{
		304	--grp->length;
		305
		306	/* call feeder, if applicable */
		307	aio_grp_feed (grp);
		308
		309	/* finish, if done */
		310	if (!grp->length && grp->fd)
		311	{
		312	req_invoke (grp);
		313	req_free (grp);
		314	}
		315	}
		316
		317	static void poll_wait ()
		318	{
121	fd_set rfd;	319	fd_set rfd;
		320
		321	while (nreqs)
		322	{
		323	int size;
		324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		325	LOCK (reslock);
		326	#endif
		327	size = res_queue.size;
		328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		329	UNLOCK (reslock);
		330	#endif
		331
		332	if (size)
		333	return;
		334
122	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
124		337
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
126	}	339	}
127	}	340	}
128		341
129	static int	342	static void req_invoke (aio_req req)
130	poll_cb ()	343	{
		344	dSP;
		345
		346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		347	{
		348	errno = req->errorno;
		349
		350	ENTER;
		351	SAVETMPS;
		352	PUSHMARK (SP);
		353	EXTEND (SP, 1);
		354
		355	switch (req->type)
		356	{
		357	case REQ_READDIR:
		358	{
		359	SV *rv = &PL_sv_undef;
		360
		361	if (req->result >= 0)
		362	{
		363	int i;
		364	char *buf = req->data2ptr;
		365	AV *av = newAV ();
		366
		367	av_extend (av, req->result - 1);
		368
		369	for (i = 0; i < req->result; ++i)
		370	{
		371	SV *sv = newSVpv (buf, 0);
		372
		373	av_store (av, i, sv);
		374	buf += SvCUR (sv) + 1;
		375	}
		376
		377	rv = sv_2mortal (newRV_noinc ((SV *)av));
		378	}
		379
		380	PUSHs (rv);
		381	}
		382	break;
		383
		384	case REQ_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh;
		388
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	PUTBACK;
		391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		392	SPAGAIN;
		393
		394	fh = SvREFCNT_inc (POPs);
		395
		396	PUSHMARK (SP);
		397	XPUSHs (sv_2mortal (fh));
		398	}
		399	break;
		400
		401	case REQ_GROUP:
		402	req->fd = 2; /* mark group as finished */
		403
		404	if (req->data)
		405	{
		406	int i;
		407	AV *av = (AV *)req->data;
		408
		409	EXTEND (SP, AvFILL (av) + 1);
		410	for (i = 0; i <= AvFILL (av); ++i)
		411	PUSHs (*av_fetch (av, i, 0));
		412	}
		413	break;
		414
		415	case REQ_NOP:
		416	case REQ_BUSY:
		417	break;
		418
		419	default:
		420	PUSHs (sv_2mortal (newSViv (req->result)));
		421	break;
		422	}
		423
		424
		425	PUTBACK;
		426	call_sv (req->callback, G_VOID | G_EVAL);
		427	SPAGAIN;
		428
		429	FREETMPS;
		430	LEAVE;
		431	}
		432
		433	if (req->grp)
		434	{
		435	aio_req grp = req->grp;
		436
		437	/* unlink request */
		438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		440
		441	if (grp->grp_first == req)
		442	grp->grp_first = req->grp_next;
		443
		444	aio_grp_dec (grp);
		445	}
		446
		447	if (SvTRUE (ERRSV))
		448	{
		449	req_free (req);
		450	croak (0);
		451	}
		452	}
		453
		454	static void req_free (aio_req req)
		455	{
		456	if (req->self)
		457	{
		458	sv_unmagic (req->self, PERL_MAGIC_ext);
		459	SvREFCNT_dec (req->self);
		460	}
		461
		462	SvREFCNT_dec (req->data);
		463	SvREFCNT_dec (req->fh);
		464	SvREFCNT_dec (req->fh2);
		465	SvREFCNT_dec (req->callback);
		466	Safefree (req->statdata);
		467
		468	if (req->type == REQ_READDIR)
		469	free (req->data2ptr);
		470
		471	Safefree (req);
		472	}
		473
		474	static void req_cancel_subs (aio_req grp)
		475	{
		476	aio_req sub;
		477
		478	if (grp->type != REQ_GROUP)
		479	return;
		480
		481	SvREFCNT_dec (grp->fh2);
		482	grp->fh2 = 0;
		483
		484	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		485	req_cancel (sub);
		486	}
		487
		488	static void req_cancel (aio_req req)
		489	{
		490	req->flags |= FLAG_CANCELLED;
		491
		492	req_cancel_subs (req);
		493	}
		494
		495	static int poll_cb ()
131	{	496	{
132	dSP;	497	dSP;
133	int count = 0;	498	int count = 0;
134	int do_croak = 0;	499	int do_croak = 0;
135	aio_req req;	500	aio_req req;
136		501
137	for (;;)	502	for (;;)
138	{	503	{
139	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
140	req = ress;	505	req = reqq_shift (&res_queue);
141		506
142	if (req)	507	if (req)
143	{	508	{
144	ress = req->next;
145
146	if (!ress)	509	if (!res_queue.size)
147	{	510	{
148	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
149	char buf [32];	512	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
151	;	514	;
152
153	rese = 0;
154	}	515	}
155	}	516	}
156		517
157	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
158		519
159	if (!req)	520	if (!req)
160	break;	521	break;
161		522
162	nreqs--;	523	--nreqs;
163		524
164	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
165	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
166	else	532	else
167	{	533	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173		536
174	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);	538	SvREADONLY_off (req->data);
…		…
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;	543	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
182	}	545	}
183		546
184	ENTER;	547	req_invoke (req);
185	PUSHMARK (SP);
186		548
187	if (req->type == REQ_READDIR)
188	{
189	SV *rv = &PL_sv_undef;
190
191	if (req->result >= 0)
192	{
193	char *buf = req->data2ptr;
194	AV *av = newAV ();
195
196	while (req->result)
197	{
198	SV *sv = newSVpv (buf, 0);
199
200	av_push (av, sv);
201	buf += SvCUR (sv) + 1;
202	req->result--;
203	}
204
205	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}
207
208	XPUSHs (rv);
209	}
210	else
211	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)
215	{
216	/* convert fd to fh */
217	SV *fh;
218
219	PUTBACK;
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}
228	}
229
230	if (SvOK (req->callback))
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID | G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);
240	}
241	}
242
243	LEAVE;
244
245	errno = errorno;
246	count++;	549	count++;
247	}	550	}
248		551
249	free_req (req);	552	req_free (req);
250	}	553	}
251		554
252	return count;	555	return count;
253	}	556	}
254		557
255	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
256		559
257	static void
258	start_thread (void)	560	static void start_thread (void)
259	{	561	{
260	sigset_t fullsigset, oldsigset;	562	sigset_t fullsigset, oldsigset;
261	pthread_t tid;
262	pthread_attr_t attr;	563	pthread_attr_t attr;
		564
		565	worker *wrk = calloc (1, sizeof (worker));
		566
		567	if (!wrk)
		568	croak ("unable to allocate worker thread data");
263		569
264	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
265	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
266	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267		573
268	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
269	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270		578
271	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		580	{
		581	wrk->prev = &wrk_first;
		582	wrk->next = wrk_first.next;
		583	wrk_first.next->prev = wrk;
		584	wrk_first.next = wrk;
272	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
273		589
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
275	}	592	}
276		593
277	static void	594	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	595	{
280	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
281	start_thread ();	597	start_thread ();
282		598
283	nreqs++;	599	++nreqs;
284		600
285	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
286		602	reqq_push (&req_queue, req);
287	req->next = 0;
288
289	if (reqe)
290	{
291	reqe->next = req;
292	reqe = req;
293	}
294	else
295	reqe = reqs = req;
296
297	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
299		605
300	if (nreqs > max_outstanding)	606	if (nreqs > max_outstanding)
301	for (;;)	607	for (;;)
302	{	608	{
303	poll_cb ();	609	poll_cb ();
…		…
307		613
308	poll_wait ();	614	poll_wait ();
309	}	615	}
310	}	616	}
311		617
312	static void	618	static void end_thread (void)
313	end_thread (void)
314	{	619	{
315	aio_req req;	620	aio_req req;
		621
316	Newz (0, req, 1, aio_cb);	622	Newz (0, req, 1, aio_cb);
		623
317	req->type = REQ_QUIT;	624	req->type = REQ_QUIT;
		625	req->pri = PRI_MAX + PRI_BIAS;
318		626
319	send_req (req);	627	req_send (req);
320	}	628	}
321		629
322	static void min_parallel (int nthreads)	630	static void min_parallel (int nthreads)
323	{	631	{
324	if (wanted < nthreads)	632	if (wanted < nthreads)
…		…
369	* normal read/write by using a mutex. slows down execution a lot,	677	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.	678	* but that's your problem, not mine.
371	*/	679	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		681
374	static ssize_t	682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
375	pread (int fd, void *buf, size_t count, off_t offset)
376	{	683	{
377	ssize_t res;	684	ssize_t res;
378	off_t ooffset;	685	off_t ooffset;
379		686
380	pthread_mutex_lock (&preadwritelock);	687	LOCK (preadwritelock);
381	ooffset = lseek (fd, 0, SEEK_CUR);	688	ooffset = lseek (fd, 0, SEEK_CUR);
382	lseek (fd, offset, SEEK_SET);	689	lseek (fd, offset, SEEK_SET);
383	res = read (fd, buf, count);	690	res = read (fd, buf, count);
384	lseek (fd, ooffset, SEEK_SET);	691	lseek (fd, ooffset, SEEK_SET);
385	pthread_mutex_unlock (&preadwritelock);	692	UNLOCK (preadwritelock);
386		693
387	return res;	694	return res;
388	}	695	}
389		696
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)	697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392	{	698	{
393	ssize_t res;	699	ssize_t res;
394	off_t ooffset;	700	off_t ooffset;
395		701
396	pthread_mutex_lock (&preadwritelock);	702	LOCK (preadwritelock);
397	ooffset = lseek (fd, 0, SEEK_CUR);	703	ooffset = lseek (fd, 0, SEEK_CUR);
398	lseek (fd, offset, SEEK_SET);	704	lseek (fd, offset, SEEK_SET);
399	res = write (fd, buf, count);	705	res = write (fd, buf, count);
400	lseek (fd, offset, SEEK_SET);	706	lseek (fd, offset, SEEK_SET);
401	pthread_mutex_unlock (&preadwritelock);	707	UNLOCK (preadwritelock);
402		708
403	return res;	709	return res;
404	}	710	}
405	#endif	711	#endif
406		712
…		…
409	#endif	715	#endif
410		716
411	#if !HAVE_READAHEAD	717	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	718	# define readahead aio_readahead
413		719
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)	720	static ssize_t readahead (int fd, off_t offset, size_t count)
416	{	721	{
417	char readahead_buf[4096];	722	dBUF;
418		723
419	while (count > 0)	724	while (count > 0)
420	{	725	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		727
423	pread (fd, readahead_buf, len, offset);	728	pread (fd, aio_buf, len, offset);
424	offset += len;	729	offset += len;
425	count -= len;	730	count -= len;
426	}	731	}
427		732
428	errno = 0;	733	errno = 0;
…		…
432	#if !HAVE_READDIR_R	737	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	738	# define readdir_r aio_readdir_r
434		739
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		741
437	static int
438	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439	{	743	{
440	struct dirent *e;	744	struct dirent *e;
441	int errorno;	745	int errorno;
442		746
443	pthread_mutex_lock (&readdirlock);	747	LOCK (readdirlock);
444		748
445	e = readdir (dirp);	749	e = readdir (dirp);
446	errorno = errno;	750	errorno = errno;
447		751
448	if (e)	752	if (e)
…		…
451	strcpy (ent->d_name, e->d_name);	755	strcpy (ent->d_name, e->d_name);
452	}	756	}
453	else	757	else
454	*res = 0;	758	*res = 0;
455		759
456	pthread_mutex_unlock (&readdirlock);	760	UNLOCK (readdirlock);
457		761
458	errno = errorno;	762	errno = errorno;
459	return e ? 0 : -1;	763	return e ? 0 : -1;
460	}	764	}
461	#endif	765	#endif
462		766
463	/* sendfile always needs emulation */	767	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
466	{	769	{
467	ssize_t res;	770	ssize_t res;
468		771
469	if (!count)	772	if (!count)
470	return 0;	773	return 0;
…		…
519	#endif	822	#endif
520	)	823	)
521	)	824	)
522	{	825	{
523	/* emulate sendfile. this is a major pain in the ass */	826	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	827	dBUF;
		828
525	res = 0;	829	res = 0;
526		830
527	while (count)	831	while (count)
528	{	832	{
529	ssize_t cnt;	833	ssize_t cnt;
530		834
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		836
533	if (cnt <= 0)	837	if (cnt <= 0)
534	{	838	{
535	if (cnt && !res) res = -1;	839	if (cnt && !res) res = -1;
536	break;	840	break;
537	}	841	}
538		842
539	cnt = write (ofd, buf, cnt);	843	cnt = write (ofd, aio_buf, cnt);
540		844
541	if (cnt <= 0)	845	if (cnt <= 0)
542	{	846	{
543	if (cnt && !res) res = -1;	847	if (cnt && !res) res = -1;
544	break;	848	break;
…		…
552		856
553	return res;	857	return res;
554	}	858	}
555		859
556	/* read a full directory */	860	/* read a full directory */
557	static int	861	static void scandir_ (aio_req req, worker *self)
558	scandir_ (const char *path, void **namesp)
559	{	862	{
560	DIR *dirp = opendir (path);	863	DIR *dirp;
561	union	864	union
562	{	865	{
563	struct dirent d;	866	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	868	} *u;
566	struct dirent *entp;	869	struct dirent *entp;
567	char *name, *names;	870	char *name, *names;
568	int memlen = 4096;	871	int memlen = 4096;
569	int memofs = 0;	872	int memofs = 0;
570	int res = 0;	873	int res = 0;
571	int errorno;	874	int errorno;
572		875
573	if (!dirp)	876	LOCK (wrklock);
574	return -1;	877	self->dirp = dirp = opendir (req->dataptr);
		878	self->dbuf = u = malloc (sizeof (*u));
		879	UNLOCK (wrklock);
575		880
576	names = malloc (memlen);	881	req->data2ptr = names = malloc (memlen);
577		882
		883	if (dirp && u && names)
578	for (;;)	884	for (;;)
579	{	885	{
		886	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	887	readdir_r (dirp, &u->d, &entp);
581		888
582	if (!entp)	889	if (!entp)
583	break;	890	break;
584		891
585	name = entp->d_name;	892	name = entp->d_name;
586		893
587	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588	{	895	{
589	int len = strlen (name) + 1;	896	int len = strlen (name) + 1;
590		897
591	res++;	898	res++;
592		899
593	while (memofs + len > memlen)	900	while (memofs + len > memlen)
594	{	901	{
595	memlen *= 2;	902	memlen *= 2;
		903	LOCK (wrklock);
596	names = realloc (names, memlen);	904	req->data2ptr = names = realloc (names, memlen);
		905	UNLOCK (wrklock);
		906
597	if (!names)	907	if (!names)
598	break;	908	break;
599	}	909	}
600		910
601	memcpy (names + memofs, name, len);	911	memcpy (names + memofs, name, len);
602	memofs += len;	912	memofs += len;
603	}	913	}
604	}	914	}
605		915
606	errorno = errno;
607	closedir (dirp);
608
609	if (errorno)	916	if (errno)
610	{
611	free (names);
612	errno = errorno;
613	res = -1;	917	res = -1;
614	}	918
615		919	req->result = res;
616	*namesp = (void *)names;
617	return res;
618	}	920	}
619		921
620	/*****************************************************************************/	922	/*****************************************************************************/
621		923
622	static void *
623	aio_proc (void *thr_arg)	924	static void *aio_proc (void *thr_arg)
624	{	925	{
625	aio_req req;	926	aio_req req;
626	int type;	927	int type;
		928	worker *self = (worker *)thr_arg;
627		929
628	do	930	do
629	{	931	{
630	pthread_mutex_lock (&reqlock);	932	LOCK (reqlock);
631		933
632	for (;;)	934	for (;;)
633	{	935	{
634	req = reqs;	936	self->req = req = reqq_shift (&req_queue);
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641		937
642	if (req)	938	if (req)
643	break;	939	break;
644		940
645	pthread_cond_wait (&reqwait, &reqlock);	941	pthread_cond_wait (&reqwait, &reqlock);
646	}	942	}
647		943
648	pthread_mutex_unlock (&reqlock);	944	UNLOCK (reqlock);
649		945
650	errno = 0; /* strictly unnecessary */	946	errno = 0; /* strictly unnecessary */
		947	type = req->type; /* remember type for QUIT check */
651		948
652	type = req->type;	949	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	950	switch (type)
655	{	951	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658		954
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
661		957
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		961
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;	963	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673		969
674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675	case REQ_FSYNC: req->result = fsync (req->fd); break;	971	case REQ_FSYNC: req->result = fsync (req->fd); break;
676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	972	case REQ_READDIR: scandir_ (req, self); break;
677		973
		974	case REQ_BUSY:
		975	{
		976	struct timeval tv;
		977
		978	tv.tv_sec = req->fd;
		979	tv.tv_usec = req->fd2;
		980
		981	req->result = select (0, 0, 0, 0, &tv);
		982	}
		983
		984	case REQ_GROUP:
		985	case REQ_NOP:
678	case REQ_QUIT:	986	case REQ_QUIT:
679	break;	987	break;
680		988
681	default:	989	default:
682	req->result = ENOSYS;	990	req->result = ENOSYS;
683	break;	991	break;
684	}	992	}
685		993
686	req->errorno = errno;	994	req->errorno = errno;
687		995
688	pthread_mutex_lock (&reslock);	996	LOCK (reslock);
689		997
690	req->next = 0;	998	if (!reqq_push (&res_queue, req))
691
692	if (rese)
693	{
694	rese->next = req;
695	rese = req;
696	}
697	else
698	{
699	rese = ress = req;
700
701	/* write a dummy byte to the pipe so fh becomes ready */	999	/* write a dummy byte to the pipe so fh becomes ready */
702	write (respipe [1], &respipe, 1);	1000	write (respipe [1], &respipe, 1);
703	}
704		1001
705	pthread_mutex_unlock (&reslock);	1002	self->req = 0;
		1003	worker_clear (self);
		1004
		1005	UNLOCK (reslock);
706	}	1006	}
707	while (type != REQ_QUIT);	1007	while (type != REQ_QUIT);
708		1008
		1009	LOCK (wrklock);
		1010	worker_free (self);
		1011	UNLOCK (wrklock);
		1012
709	return 0;	1013	return 0;
710	}	1014	}
711		1015
712	/*****************************************************************************/	1016	/*****************************************************************************/
713		1017
714	static void atfork_prepare (void)	1018	static void atfork_prepare (void)
715	{	1019	{
716	pthread_mutex_lock (&reqlock);	1020	LOCK (wrklock);
717	pthread_mutex_lock (&reslock);	1021	LOCK (reqlock);
		1022	LOCK (reslock);
718	#if !HAVE_PREADWRITE	1023	#if !HAVE_PREADWRITE
719	pthread_mutex_lock (&preadwritelock);	1024	LOCK (preadwritelock);
720	#endif	1025	#endif
721	#if !HAVE_READDIR_R	1026	#if !HAVE_READDIR_R
722	pthread_mutex_lock (&readdirlock);	1027	LOCK (readdirlock);
723	#endif	1028	#endif
724	}	1029	}
725		1030
726	static void atfork_parent (void)	1031	static void atfork_parent (void)
727	{	1032	{
728	#if !HAVE_READDIR_R	1033	#if !HAVE_READDIR_R
729	pthread_mutex_unlock (&readdirlock);	1034	UNLOCK (readdirlock);
730	#endif	1035	#endif
731	#if !HAVE_PREADWRITE	1036	#if !HAVE_PREADWRITE
732	pthread_mutex_unlock (&preadwritelock);	1037	UNLOCK (preadwritelock);
733	#endif	1038	#endif
734	pthread_mutex_unlock (&reslock);	1039	UNLOCK (reslock);
735	pthread_mutex_unlock (&reqlock);	1040	UNLOCK (reqlock);
		1041	UNLOCK (wrklock);
736	}	1042	}
737		1043
738	static void atfork_child (void)	1044	static void atfork_child (void)
739	{	1045	{
740	aio_req prv;	1046	aio_req prv;
741		1047
		1048	while (prv = reqq_shift (&req_queue))
		1049	req_free (prv);
		1050
		1051	while (prv = reqq_shift (&res_queue))
		1052	req_free (prv);
		1053
		1054	while (wrk_first.next != &wrk_first)
		1055	{
		1056	worker *wrk = wrk_first.next;
		1057
		1058	if (wrk->req)
		1059	req_free (wrk->req);
		1060
		1061	worker_clear (wrk);
		1062	worker_free (wrk);
		1063	}
		1064
742	started = 0;	1065	started = 0;
743		1066	nreqs = 0;
744	while (reqs)
745	{
746	prv = reqs;
747	reqs = prv->next;
748	free_req (prv);
749	}
750
751	reqs = reqe = 0;
752
753	while (ress)
754	{
755	prv = ress;
756	ress = prv->next;
757	free_req (prv);
758	}
759
760	ress = rese = 0;
761		1067
762	close (respipe [0]);	1068	close (respipe [0]);
763	close (respipe [1]);	1069	close (respipe [1]);
764	create_pipe ();	1070	create_pipe ();
765		1071
766	atfork_parent ();	1072	atfork_parent ();
767	}	1073	}
768		1074
769	#define dREQ \	1075	#define dREQ \
770	aio_req req; \	1076	aio_req req; \
		1077	int req_pri = next_pri; \
		1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
771	\	1079	\
772	if (SvOK (callback) && !SvROK (callback)) \	1080	if (SvOK (callback) && !SvROK (callback)) \
773	croak ("clalback must be undef or of reference type"); \	1081	croak ("callback must be undef or of reference type"); \
774	\	1082	\
775	Newz (0, req, 1, aio_cb); \	1083	Newz (0, req, 1, aio_cb); \
776	if (!req) \	1084	if (!req) \
777	croak ("out of memory during aio_req allocation"); \	1085	croak ("out of memory during aio_req allocation"); \
778	\	1086	\
779	req->callback = newSVsv (callback);	1087	req->callback = newSVsv (callback); \
		1088	req->pri = req_pri
		1089
		1090	#define REQ_SEND \
		1091	req_send (req); \
		1092	\
		1093	if (GIMME_V != G_VOID) \
		1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
780		1095
781	MODULE = IO::AIO PACKAGE = IO::AIO	1096	MODULE = IO::AIO PACKAGE = IO::AIO
782		1097
783	PROTOTYPES: ENABLE	1098	PROTOTYPES: ENABLE
784		1099
785	BOOT:	1100	BOOT:
786	{	1101	{
		1102	HV *stash = gv_stashpv ("IO::AIO", 1);
		1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1106
787	create_pipe ();	1107	create_pipe ();
788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
789	}	1109	}
790		1110
791	void	1111	void
…		…
811	SV * pathname	1131	SV * pathname
812	int flags	1132	int flags
813	int mode	1133	int mode
814	SV * callback	1134	SV * callback
815	PROTOTYPE: $$$;$	1135	PROTOTYPE: $$$;$
816	CODE:	1136	PPCODE:
817	{	1137	{
818	dREQ;	1138	dREQ;
819		1139
820	req->type = REQ_OPEN;	1140	req->type = REQ_OPEN;
821	req->data = newSVsv (pathname);	1141	req->data = newSVsv (pathname);
822	req->dataptr = SvPVbyte_nolen (req->data);	1142	req->dataptr = SvPVbyte_nolen (req->data);
823	req->fd = flags;	1143	req->fd = flags;
824	req->mode = mode;	1144	req->mode = mode;
825		1145
826	send_req (req);	1146	REQ_SEND;
827	}	1147	}
828		1148
829	void	1149	void
830	aio_close (fh,callback=&PL_sv_undef)	1150	aio_close (fh,callback=&PL_sv_undef)
831	SV * fh	1151	SV * fh
…		…
833	PROTOTYPE: $;$	1153	PROTOTYPE: $;$
834	ALIAS:	1154	ALIAS:
835	aio_close = REQ_CLOSE	1155	aio_close = REQ_CLOSE
836	aio_fsync = REQ_FSYNC	1156	aio_fsync = REQ_FSYNC
837	aio_fdatasync = REQ_FDATASYNC	1157	aio_fdatasync = REQ_FDATASYNC
838	CODE:	1158	PPCODE:
839	{	1159	{
840	dREQ;	1160	dREQ;
841		1161
842	req->type = ix;	1162	req->type = ix;
843	req->fh = newSVsv (fh);	1163	req->fh = newSVsv (fh);
844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
845		1165
846	send_req (req);	1166	REQ_SEND (req);
847	}	1167	}
848		1168
849	void	1169	void
850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
851	SV * fh	1171	SV * fh
…		…
856	SV * callback	1176	SV * callback
857	ALIAS:	1177	ALIAS:
858	aio_read = REQ_READ	1178	aio_read = REQ_READ
859	aio_write = REQ_WRITE	1179	aio_write = REQ_WRITE
860	PROTOTYPE: $$$$$;$	1180	PROTOTYPE: $$$$$;$
861	CODE:	1181	PPCODE:
862	{	1182	{
863	aio_req req;	1183	aio_req req;
864	STRLEN svlen;	1184	STRLEN svlen;
865	char *svptr = SvPVbyte (data, svlen);	1185	char *svptr = SvPVbyte (data, svlen);
866		1186
…		…
904	{	1224	{
905	SvREADONLY_on (data);	1225	SvREADONLY_on (data);
906	req->data2ptr = (void *)data;	1226	req->data2ptr = (void *)data;
907	}	1227	}
908		1228
909	send_req (req);	1229	REQ_SEND;
910	}	1230	}
911	}	1231	}
912		1232
913	void	1233	void
914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
916	SV * in_fh	1236	SV * in_fh
917	UV in_offset	1237	UV in_offset
918	UV length	1238	UV length
919	SV * callback	1239	SV * callback
920	PROTOTYPE: $$$$;$	1240	PROTOTYPE: $$$$;$
921	CODE:	1241	PPCODE:
922	{	1242	{
923	dREQ;	1243	dREQ;
924		1244
925	req->type = REQ_SENDFILE;	1245	req->type = REQ_SENDFILE;
926	req->fh = newSVsv (out_fh);	1246	req->fh = newSVsv (out_fh);
…		…
928	req->fh2 = newSVsv (in_fh);	1248	req->fh2 = newSVsv (in_fh);
929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930	req->offset = in_offset;	1250	req->offset = in_offset;
931	req->length = length;	1251	req->length = length;
932		1252
933	send_req (req);	1253	REQ_SEND;
934	}	1254	}
935		1255
936	void	1256	void
937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
938	SV * fh	1258	SV * fh
939	UV offset	1259	UV offset
940	IV length	1260	IV length
941	SV * callback	1261	SV * callback
942	PROTOTYPE: $$$;$	1262	PROTOTYPE: $$$;$
943	CODE:	1263	PPCODE:
944	{	1264	{
945	dREQ;	1265	dREQ;
946		1266
947	req->type = REQ_READAHEAD;	1267	req->type = REQ_READAHEAD;
948	req->fh = newSVsv (fh);	1268	req->fh = newSVsv (fh);
949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
950	req->offset = offset;	1270	req->offset = offset;
951	req->length = length;	1271	req->length = length;
952		1272
953	send_req (req);	1273	REQ_SEND;
954	}	1274	}
955		1275
956	void	1276	void
957	aio_stat (fh_or_path,callback=&PL_sv_undef)	1277	aio_stat (fh_or_path,callback=&PL_sv_undef)
958	SV * fh_or_path	1278	SV * fh_or_path
959	SV * callback	1279	SV * callback
960	ALIAS:	1280	ALIAS:
961	aio_stat = REQ_STAT	1281	aio_stat = REQ_STAT
962	aio_lstat = REQ_LSTAT	1282	aio_lstat = REQ_LSTAT
963	CODE:	1283	PPCODE:
964	{	1284	{
965	dREQ;	1285	dREQ;
966		1286
967	New (0, req->statdata, 1, Stat_t);	1287	New (0, req->statdata, 1, Stat_t);
968	if (!req->statdata)	1288	if (!req->statdata)
969	{	1289	{
970	free_req (req);	1290	req_free (req);
971	croak ("out of memory during aio_req->statdata allocation");	1291	croak ("out of memory during aio_req->statdata allocation");
972	}	1292	}
973		1293
974	if (SvPOK (fh_or_path))	1294	if (SvPOK (fh_or_path))
975	{	1295	{
…		…
982	req->type = REQ_FSTAT;	1302	req->type = REQ_FSTAT;
983	req->fh = newSVsv (fh_or_path);	1303	req->fh = newSVsv (fh_or_path);
984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
985	}	1305	}
986		1306
987	send_req (req);	1307	REQ_SEND;
988	}	1308	}
989		1309
990	void	1310	void
991	aio_unlink (pathname,callback=&PL_sv_undef)	1311	aio_unlink (pathname,callback=&PL_sv_undef)
992	SV * pathname	1312	SV * pathname
993	SV * callback	1313	SV * callback
994	ALIAS:	1314	ALIAS:
995	aio_unlink = REQ_UNLINK	1315	aio_unlink = REQ_UNLINK
996	aio_rmdir = REQ_RMDIR	1316	aio_rmdir = REQ_RMDIR
997	aio_readdir = REQ_READDIR	1317	aio_readdir = REQ_READDIR
998	CODE:	1318	PPCODE:
999	{	1319	{
1000	dREQ;	1320	dREQ;
1001		1321
1002	req->type = ix;	1322	req->type = ix;
1003	req->data = newSVsv (pathname);	1323	req->data = newSVsv (pathname);
1004	req->dataptr = SvPVbyte_nolen (req->data);	1324	req->dataptr = SvPVbyte_nolen (req->data);
1005		1325
1006	send_req (req);	1326	REQ_SEND;
1007	}	1327	}
1008		1328
1009	void	1329	void
1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1011	SV * oldpath	1331	SV * oldpath
…		…
1013	SV * callback	1333	SV * callback
1014	ALIAS:	1334	ALIAS:
1015	aio_link = REQ_LINK	1335	aio_link = REQ_LINK
1016	aio_symlink = REQ_SYMLINK	1336	aio_symlink = REQ_SYMLINK
1017	aio_rename = REQ_RENAME	1337	aio_rename = REQ_RENAME
1018	CODE:	1338	PPCODE:
1019	{	1339	{
1020	dREQ;	1340	dREQ;
1021		1341
1022	req->type = ix;	1342	req->type = ix;
1023	req->fh = newSVsv (oldpath);	1343	req->fh = newSVsv (oldpath);
1024	req->data2ptr = SvPVbyte_nolen (req->fh);	1344	req->data2ptr = SvPVbyte_nolen (req->fh);
1025	req->data = newSVsv (newpath);	1345	req->data = newSVsv (newpath);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1346	req->dataptr = SvPVbyte_nolen (req->data);
1027		1347
1028	send_req (req);	1348	REQ_SEND;
1029	}	1349	}
		1350
		1351	void
		1352	aio_busy (delay,callback=&PL_sv_undef)
		1353	double delay
		1354	SV * callback
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->type = REQ_BUSY;
		1360	req->fd = delay < 0. ? 0 : delay;
		1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_group (callback=&PL_sv_undef)
		1368	SV * callback
		1369	PROTOTYPE: ;$
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_GROUP;
		1375	req_send (req);
		1376
		1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1378	}
		1379
		1380	void
		1381	aio_nop (callback=&PL_sv_undef)
		1382	SV * callback
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->type = REQ_NOP;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aioreq_pri (int pri = DEFAULT_PRI)
		1394	CODE:
		1395	if (pri < PRI_MIN) pri = PRI_MIN;
		1396	if (pri > PRI_MAX) pri = PRI_MAX;
		1397	next_pri = pri + PRI_BIAS;
		1398
		1399	void
		1400	aioreq_nice (int nice = 0)
		1401	CODE:
		1402	nice = next_pri - nice;
		1403	if (nice < PRI_MIN) nice = PRI_MIN;
		1404	if (nice > PRI_MAX) nice = PRI_MAX;
		1405	next_pri = nice + PRI_BIAS;
1030		1406
1031	void	1407	void
1032	flush ()	1408	flush ()
1033	PROTOTYPE:	1409	PROTOTYPE:
1034	CODE:	1410	CODE:
…		…
1077	CODE:	1453	CODE:
1078	RETVAL = nreqs;	1454	RETVAL = nreqs;
1079	OUTPUT:	1455	OUTPUT:
1080	RETVAL	1456	RETVAL
1081		1457
		1458	PROTOTYPES: DISABLE
		1459
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1461
		1462	void
		1463	cancel (aio_req_ornot req)
		1464	CODE:
		1465	req_cancel (req);
		1466
		1467	void
		1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1469	CODE:
		1470	SvREFCNT_dec (req->callback);
		1471	req->callback = newSVsv (callback);
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1474
		1475	void
		1476	add (aio_req grp, ...)
		1477	PPCODE:
		1478	{
		1479	int i;
		1480	aio_req req;
		1481
		1482	if (grp->fd == 2)
		1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1484
		1485	for (i = 1; i < items; ++i )
		1486	{
		1487	if (GIMME_V != G_VOID)
		1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1489
		1490	req = SvAIO_REQ (ST (i));
		1491
		1492	if (req)
		1493	{
		1494	++grp->length;
		1495	req->grp = grp;
		1496
		1497	req->grp_prev = 0;
		1498	req->grp_next = grp->grp_first;
		1499
		1500	if (grp->grp_first)
		1501	grp->grp_first->grp_prev = req;
		1502
		1503	grp->grp_first = req;
		1504	}
		1505	}
		1506	}
		1507
		1508	void
		1509	cancel_subs (aio_req_ornot req)
		1510	CODE:
		1511	req_cancel_subs (req);
		1512
		1513	void
		1514	result (aio_req grp, ...)
		1515	CODE:
		1516	{
		1517	int i;
		1518	AV *av = newAV ();
		1519
		1520	for (i = 1; i < items; ++i )
		1521	av_push (av, newSVsv (ST (i)));
		1522
		1523	SvREFCNT_dec (grp->data);
		1524	grp->data = (SV *)av;
		1525	}
		1526
		1527	void
		1528	limit (aio_req grp, int limit)
		1529	CODE:
		1530	grp->fd2 = limit;
		1531	aio_grp_feed (grp);
		1532
		1533	void
		1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1535	CODE:
		1536	{
		1537	SvREFCNT_dec (grp->fh2);
		1538	grp->fh2 = newSVsv (callback);
		1539
		1540	if (grp->fd2 <= 0)
		1541	grp->fd2 = 2;
		1542
		1543	aio_grp_feed (grp);
		1544	}
		1545

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