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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs.
Revision 1.71 by root, Tue Oct 24 16:35:04 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"
…		…
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
13	#include <errno.h>	21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
14	#include <sys/types.h>	24	#include <sys/types.h>
15	#include <sys/stat.h>	25	#include <sys/stat.h>
16	#include <limits.h>	26	#include <limits.h>
17	#include <unistd.h>	27	#include <unistd.h>
18	#include <fcntl.h>	28	#include <fcntl.h>
…		…
39	# define NAME_MAX 4096	49	# define NAME_MAX 4096
40	#endif	50	#endif
41		51
42	#if __ia64	52	#if __ia64
43	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	56	#else
45	# define STACKSIZE 8192	57	# define STACKSIZE 16384
46	#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;
47		70
48	enum {	71	enum {
49	REQ_QUIT,	72	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	79	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
58	};	83	};
59		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
60	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
61	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
62		91
63	int type;	92	SV *data, *callback;
64		93	SV *fh, *fh2;
65	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
66	int fd, fd2;	95	Stat_t *statdata;
67	off_t offset;	96	off_t offset;
68	size_t length;	97	size_t length;
69	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
70	mode_t mode; /* open */	104	mode_t mode; /* open */
71	int errorno;
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	STRLEN dataoffset;
76		105
77	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;
78	} aio_cb;	111	} aio_cb;
79		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
80	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;
81		130
82	static int started, wanted;	131	static int started, wanted;
83	static volatile int nreqs;	132	static volatile int nreqs;
84	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
85	static int respipe [2];	134	static int respipe [2];
86		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
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		188
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
92	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;
93		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);
94	static void free_req (aio_req req)	244	static void req_free (aio_req req);
95	{
96	if (req->data)
97	SvREFCNT_dec (req->data);
98		245
		246	/* must be called at most once */
		247	static SV *req_sv (aio_req req, const char *klass)
		248	{
99	if (req->fh)	249	if (!req->self)
100	SvREFCNT_dec (req->fh);	250	{
		251	req->self = (SV *)newHV ();
		252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		253	}
101		254
102	if (req->fh2)	255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		256	}
		257
		258	static aio_req SvAIO_REQ (SV *sv)
		259	{
		260	MAGIC *mg;
		261
		262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		263	croak ("object of class " AIO_REQ_KLASS " expected");
		264
		265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		266
		267	return mg ? (aio_req)mg->mg_ptr : 0;
		268	}
		269
		270	static void aio_grp_feed (aio_req grp)
		271	{
		272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		273	{
		274	int old_len = grp->length;
		275
		276	if (grp->fh2 && SvOK (grp->fh2))
		277	{
		278	dSP;
		279
		280	ENTER;
		281	SAVETMPS;
		282	PUSHMARK (SP);
		283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		284	PUTBACK;
		285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		286	SPAGAIN;
		287	FREETMPS;
		288	LEAVE;
		289	}
		290
		291	/* stop if no progress has been made */
		292	if (old_len == grp->length)
		293	{
103	SvREFCNT_dec (req->fh2);	294	SvREFCNT_dec (grp->fh2);
104		295	grp->fh2 = 0;
105	if (req->statdata)	296	break;
106	Safefree (req->statdata);	297	}
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);
110
111	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);
113
114	Safefree (req);
115	}
116
117	static void
118	poll_wait ()
119	{
120	if (nreqs && !ress)
121	{	298	}
		299	}
		300
		301	static void aio_grp_dec (aio_req grp)
		302	{
		303	--grp->length;
		304
		305	/* call feeder, if applicable */
		306	aio_grp_feed (grp);
		307
		308	/* finish, if done */
		309	if (!grp->length && grp->fd)
		310	{
		311	req_invoke (grp);
		312	req_free (grp);
		313	}
		314	}
		315
		316	static void poll_wait ()
		317	{
122	fd_set rfd;	318	fd_set rfd;
		319
		320	while (nreqs)
		321	{
		322	int size;
		323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		324	LOCK (reslock);
		325	#endif
		326	size = res_queue.size;
		327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		328	UNLOCK (reslock);
		329	#endif
		330
		331	if (size)
		332	return;
		333
123	FD_ZERO(&rfd);	334	FD_ZERO(&rfd);
124	FD_SET(respipe [0], &rfd);	335	FD_SET(respipe [0], &rfd);
125		336
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	337	select (respipe [0] + 1, &rfd, 0, 0, 0);
127	}	338	}
128	}	339	}
129		340
130	static int	341	static void req_invoke (aio_req req)
131	poll_cb ()	342	{
		343	dSP;
		344
		345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		346	{
		347	errno = req->errorno;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	switch (req->type)
		355	{
		356	case REQ_READDIR:
		357	{
		358	SV *rv = &PL_sv_undef;
		359
		360	if (req->result >= 0)
		361	{
		362	int i;
		363	char *buf = req->data2ptr;
		364	AV *av = newAV ();
		365
		366	av_extend (av, req->result - 1);
		367
		368	for (i = 0; i < req->result; ++i)
		369	{
		370	SV *sv = newSVpv (buf, 0);
		371
		372	av_store (av, i, sv);
		373	buf += SvCUR (sv) + 1;
		374	}
		375
		376	rv = sv_2mortal (newRV_noinc ((SV *)av));
		377	}
		378
		379	PUSHs (rv);
		380	}
		381	break;
		382
		383	case REQ_OPEN:
		384	{
		385	/* convert fd to fh */
		386	SV *fh;
		387
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	PUTBACK;
		390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		391	SPAGAIN;
		392
		393	fh = SvREFCNT_inc (POPs);
		394
		395	PUSHMARK (SP);
		396	XPUSHs (sv_2mortal (fh));
		397	}
		398	break;
		399
		400	case REQ_GROUP:
		401	req->fd = 2; /* mark group as finished */
		402
		403	if (req->data)
		404	{
		405	int i;
		406	AV *av = (AV *)req->data;
		407
		408	EXTEND (SP, AvFILL (av) + 1);
		409	for (i = 0; i <= AvFILL (av); ++i)
		410	PUSHs (*av_fetch (av, i, 0));
		411	}
		412	break;
		413
		414	case REQ_NOP:
		415	case REQ_BUSY:
		416	break;
		417
		418	default:
		419	PUSHs (sv_2mortal (newSViv (req->result)));
		420	break;
		421	}
		422
		423
		424	PUTBACK;
		425	call_sv (req->callback, G_VOID | G_EVAL);
		426	SPAGAIN;
		427
		428	FREETMPS;
		429	LEAVE;
		430	}
		431
		432	if (req->grp)
		433	{
		434	aio_req grp = req->grp;
		435
		436	/* unlink request */
		437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		439
		440	if (grp->grp_first == req)
		441	grp->grp_first = req->grp_next;
		442
		443	aio_grp_dec (grp);
		444	}
		445
		446	if (SvTRUE (ERRSV))
		447	{
		448	req_free (req);
		449	croak (0);
		450	}
		451	}
		452
		453	static void req_free (aio_req req)
		454	{
		455	if (req->self)
		456	{
		457	sv_unmagic (req->self, PERL_MAGIC_ext);
		458	SvREFCNT_dec (req->self);
		459	}
		460
		461	SvREFCNT_dec (req->data);
		462	SvREFCNT_dec (req->fh);
		463	SvREFCNT_dec (req->fh2);
		464	SvREFCNT_dec (req->callback);
		465	Safefree (req->statdata);
		466
		467	if (req->type == REQ_READDIR)
		468	free (req->data2ptr);
		469
		470	Safefree (req);
		471	}
		472
		473	static void req_cancel (aio_req req)
		474	{
		475	req->flags |= FLAG_CANCELLED;
		476
		477	if (req->type == REQ_GROUP)
		478	{
		479	aio_req sub;
		480
		481	for (sub = req->grp_first; sub; sub = sub->grp_next)
		482	req_cancel (sub);
		483	}
		484	}
		485
		486	static int poll_cb ()
132	{	487	{
133	dSP;	488	dSP;
134	int count = 0;	489	int count = 0;
135	int do_croak = 0;	490	int do_croak = 0;
136	aio_req req;	491	aio_req req;
137		492
138	for (;;)	493	for (;;)
139	{	494	{
140	pthread_mutex_lock (&reslock);	495	LOCK (reslock);
141	req = ress;	496	req = reqq_shift (&res_queue);
142		497
143	if (req)	498	if (req)
144	{	499	{
145	ress = req->next;
146
147	if (!ress)	500	if (!res_queue.size)
148	{	501	{
149	/* read any signals sent by the worker threads */	502	/* read any signals sent by the worker threads */
150	char buf [32];	503	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)	504	while (read (respipe [0], buf, 32) == 32)
152	;	505	;
153
154	rese = 0;
155	}	506	}
156	}	507	}
157		508
158	pthread_mutex_unlock (&reslock);	509	UNLOCK (reslock);
159		510
160	if (!req)	511	if (!req)
161	break;	512	break;
162		513
163	nreqs--;	514	--nreqs;
164		515
165	if (req->type == REQ_QUIT)	516	if (req->type == REQ_QUIT)
166	started--;	517	started--;
		518	else if (req->type == REQ_GROUP && req->length)
		519	{
		520	req->fd = 1; /* mark request as delayed */
		521	continue;
		522	}
167	else	523	else
168	{	524	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)	525	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174		527
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);	529	SvREADONLY_off (req->data);
…		…
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;	534	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);	535	PL_statcache = *(req->statdata);
183	}	536	}
184		537
185	ENTER;	538	req_invoke (req);
186	PUSHMARK (SP);
187		539
188	if (req->type == REQ_READDIR)
189	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}
211	else
212	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));
214
215	if (req->type == REQ_OPEN)
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID | G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);
241	}
242	}
243
244	LEAVE;
245
246	errno = errorno;
247	count++;	540	count++;
248	}	541	}
249		542
250	free_req (req);	543	req_free (req);
251	}	544	}
252		545
253	return count;	546	return count;
254	}	547	}
255		548
256	static void *aio_proc(void *arg);	549	static void *aio_proc(void *arg);
257		550
258	static void
259	start_thread (void)	551	static void start_thread (void)
260	{	552	{
		553	worker *wrk = calloc (1, sizeof (worker));
		554
		555	if (!wrk)
		556	croak ("unable to allocate worker thread data");
		557
261	sigset_t fullsigset, oldsigset;	558	sigset_t fullsigset, oldsigset;
262	pthread_t tid;
263	pthread_attr_t attr;	559	pthread_attr_t attr;
264		560
265	pthread_attr_init (&attr);	561	pthread_attr_init (&attr);
266	pthread_attr_setstacksize (&attr, STACKSIZE);	562	pthread_attr_setstacksize (&attr, STACKSIZE);
267	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268		564
269	sigfillset (&fullsigset);	565	sigfillset (&fullsigset);
		566
		567	LOCK (wrklock);
270	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271		569
272	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		571	{
		572	wrk->prev = &wrk_first;
		573	wrk->next = wrk_first.next;
		574	wrk_first.next->prev = wrk;
		575	wrk_first.next = wrk;
273	started++;	576	started++;
		577	}
		578	else
		579	free (wrk);
274		580
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);	581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		582	UNLOCK (wrklock);
276	}	583	}
277		584
278	static void	585	static void req_send (aio_req req)
279	send_req (aio_req req)
280	{	586	{
281	while (started < wanted && nreqs >= started)	587	while (started < wanted && nreqs >= started)
282	start_thread ();	588	start_thread ();
283		589
284	nreqs++;	590	++nreqs;
285		591
286	pthread_mutex_lock (&reqlock);	592	LOCK (reqlock);
287		593	reqq_push (&req_queue, req);
288	req->next = 0;
289
290	if (reqe)
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);	594	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);	595	UNLOCK (reqlock);
300		596
301	if (nreqs > max_outstanding)	597	if (nreqs > max_outstanding)
302	for (;;)	598	for (;;)
303	{	599	{
304	poll_cb ();	600	poll_cb ();
…		…
308		604
309	poll_wait ();	605	poll_wait ();
310	}	606	}
311	}	607	}
312		608
313	static void	609	static void end_thread (void)
314	end_thread (void)
315	{	610	{
316	aio_req req;	611	aio_req req;
		612
317	Newz (0, req, 1, aio_cb);	613	Newz (0, req, 1, aio_cb);
		614
318	req->type = REQ_QUIT;	615	req->type = REQ_QUIT;
		616	req->pri = PRI_MAX + PRI_BIAS;
319		617
320	send_req (req);	618	req_send (req);
321	}	619	}
322		620
323	static void min_parallel (int nthreads)	621	static void min_parallel (int nthreads)
324	{	622	{
325	if (wanted < nthreads)	623	if (wanted < nthreads)
…		…
370	* normal read/write by using a mutex. slows down execution a lot,	668	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	669	* but that's your problem, not mine.
372	*/	670	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		672
375	static ssize_t	673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	674	{
378	ssize_t res;	675	ssize_t res;
379	off_t ooffset;	676	off_t ooffset;
380		677
381	pthread_mutex_lock (&preadwritelock);	678	LOCK (preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	679	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	680	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	681	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	682	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&preadwritelock);	683	UNLOCK (preadwritelock);
387		684
388	return res;	685	return res;
389	}	686	}
390		687
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	688	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	689	{
394	ssize_t res;	690	ssize_t res;
395	off_t ooffset;	691	off_t ooffset;
396		692
397	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	696	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	697	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
403		699
404	return res;	700	return res;
405	}	701	}
406	#endif	702	#endif
407		703
…		…
410	#endif	706	#endif
411		707
412	#if !HAVE_READAHEAD	708	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	709	# define readahead aio_readahead
414		710
415	static ssize_t
416	readahead (int fd, off_t offset, size_t count)	711	static ssize_t readahead (int fd, off_t offset, size_t count)
417	{	712	{
418	char readahead_buf[4096];	713	dBUF;
419		714
420	while (count > 0)	715	while (count > 0)
421	{	716	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		718
424	pread (fd, readahead_buf, len, offset);	719	pread (fd, aio_buf, len, offset);
425	offset += len;	720	offset += len;
426	count -= len;	721	count -= len;
427	}	722	}
428		723
429	errno = 0;	724	errno = 0;
…		…
433	#if !HAVE_READDIR_R	728	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r	729	# define readdir_r aio_readdir_r
435		730
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437		732
438	static int
439	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440	{	734	{
441	struct dirent *e;	735	struct dirent *e;
442	int errorno;	736	int errorno;
443		737
444	pthread_mutex_lock (&readdirlock);	738	LOCK (readdirlock);
445		739
446	e = readdir (dirp);	740	e = readdir (dirp);
447	errorno = errno;	741	errorno = errno;
448		742
449	if (e)	743	if (e)
…		…
452	strcpy (ent->d_name, e->d_name);	746	strcpy (ent->d_name, e->d_name);
453	}	747	}
454	else	748	else
455	*res = 0;	749	*res = 0;
456		750
457	pthread_mutex_unlock (&readdirlock);	751	UNLOCK (readdirlock);
458		752
459	errno = errorno;	753	errno = errorno;
460	return e ? 0 : -1;	754	return e ? 0 : -1;
461	}	755	}
462	#endif	756	#endif
463		757
464	/* sendfile always needs emulation */	758	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
467	{	760	{
468	ssize_t res;	761	ssize_t res;
469		762
470	if (!count)	763	if (!count)
471	return 0;	764	return 0;
…		…
520	#endif	813	#endif
521	)	814	)
522	)	815	)
523	{	816	{
524	/* emulate sendfile. this is a major pain in the ass */	817	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];	818	dBUF;
		819
526	res = 0;	820	res = 0;
527		821
528	while (count)	822	while (count)
529	{	823	{
530	ssize_t cnt;	824	ssize_t cnt;
531		825
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
533		827
534	if (cnt <= 0)	828	if (cnt <= 0)
535	{	829	{
536	if (cnt && !res) res = -1;	830	if (cnt && !res) res = -1;
537	break;	831	break;
538	}	832	}
539		833
540	cnt = write (ofd, buf, cnt);	834	cnt = write (ofd, aio_buf, cnt);
541		835
542	if (cnt <= 0)	836	if (cnt <= 0)
543	{	837	{
544	if (cnt && !res) res = -1;	838	if (cnt && !res) res = -1;
545	break;	839	break;
…		…
553		847
554	return res;	848	return res;
555	}	849	}
556		850
557	/* read a full directory */	851	/* read a full directory */
558	static int	852	static void scandir_ (aio_req req, worker *self)
559	scandir_ (const char *path, void **namesp)
560	{	853	{
561	DIR *dirp = opendir (path);	854	DIR *dirp;
562	union	855	union
563	{	856	{
564	struct dirent d;	857	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;	859	} *u;
567	struct dirent *entp;	860	struct dirent *entp;
568	char *name, *names;	861	char *name, *names;
569	int memlen = 4096;	862	int memlen = 4096;
570	int memofs = 0;	863	int memofs = 0;
571	int res = 0;	864	int res = 0;
572	int errorno;	865	int errorno;
573		866
574	if (!dirp)	867	LOCK (wrklock);
575	return -1;	868	self->dirp = dirp = opendir (req->dataptr);
		869	self->dbuf = u = malloc (sizeof (*u));
		870	UNLOCK (wrklock);
576		871
577	names = malloc (memlen);	872	req->data2ptr = names = malloc (memlen);
578		873
		874	if (dirp && u && names)
579	for (;;)	875	for (;;)
580	{	876	{
		877	errno = 0;
581	errno = 0, readdir_r (dirp, &u.d, &entp);	878	readdir_r (dirp, &u->d, &entp);
582		879
583	if (!entp)	880	if (!entp)
584	break;	881	break;
585		882
586	name = entp->d_name;	883	name = entp->d_name;
587		884
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{	886	{
590	int len = strlen (name) + 1;	887	int len = strlen (name) + 1;
591		888
592	res++;	889	res++;
593		890
594	while (memofs + len > memlen)	891	while (memofs + len > memlen)
595	{	892	{
596	memlen *= 2;	893	memlen *= 2;
		894	LOCK (wrklock);
597	names = realloc (names, memlen);	895	req->data2ptr = names = realloc (names, memlen);
		896	UNLOCK (wrklock);
		897
598	if (!names)	898	if (!names)
599	break;	899	break;
600	}	900	}
601		901
602	memcpy (names + memofs, name, len);	902	memcpy (names + memofs, name, len);
603	memofs += len;	903	memofs += len;
604	}	904	}
605	}	905	}
606		906
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)	907	if (errno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;	908	res = -1;
615	}	909
616		910	req->result = res;
617	*namesp = (void *)names;
618	return res;
619	}	911	}
620		912
621	/*****************************************************************************/	913	/*****************************************************************************/
622		914
623	static void *
624	aio_proc (void *thr_arg)	915	static void *aio_proc (void *thr_arg)
625	{	916	{
626	aio_req req;	917	aio_req req;
627	int type;	918	int type;
		919	worker *self = (worker *)thr_arg;
628		920
629	do	921	do
630	{	922	{
631	pthread_mutex_lock (&reqlock);	923	LOCK (reqlock);
632		924
633	for (;;)	925	for (;;)
634	{	926	{
635	req = reqs;	927	self->req = req = reqq_shift (&req_queue);
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642		928
643	if (req)	929	if (req)
644	break;	930	break;
645		931
646	pthread_cond_wait (&reqwait, &reqlock);	932	pthread_cond_wait (&reqwait, &reqlock);
647	}	933	}
648		934
649	pthread_mutex_unlock (&reqlock);	935	UNLOCK (reqlock);
650		936
651	errno = 0; /* strictly unnecessary */	937	errno = 0; /* strictly unnecessary */
		938	type = req->type; /* remember type for QUIT check */
652		939
653	type = req->type;	940	if (!(req->flags & FLAG_CANCELLED))
654
655	switch (type)	941	switch (type)
656	{	942	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659		945
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
662		948
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666		952
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;	954	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674		960
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;	962	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	963	case REQ_READDIR: scandir_ (req, self); break;
678		964
		965	case REQ_BUSY:
		966	{
		967	struct timeval tv;
		968
		969	tv.tv_sec = req->fd;
		970	tv.tv_usec = req->fd2;
		971
		972	req->result = select (0, 0, 0, 0, &tv);
		973	}
		974
		975	case REQ_GROUP:
		976	case REQ_NOP:
679	case REQ_QUIT:	977	case REQ_QUIT:
680	break;	978	break;
681		979
682	default:	980	default:
683	req->result = ENOSYS;	981	req->result = ENOSYS;
684	break;	982	break;
685	}	983	}
686		984
687	req->errorno = errno;	985	req->errorno = errno;
688		986
689	pthread_mutex_lock (&reslock);	987	LOCK (reslock);
690		988
691	req->next = 0;	989	if (!reqq_push (&res_queue, req))
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */	990	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);	991	write (respipe [1], &respipe, 1);
704	}
705		992
706	pthread_mutex_unlock (&reslock);	993	self->req = 0;
		994	worker_clear (self);
		995
		996	UNLOCK (reslock);
707	}	997	}
708	while (type != REQ_QUIT);	998	while (type != REQ_QUIT);
709		999
		1000	LOCK (wrklock);
		1001	worker_free (self);
		1002	UNLOCK (wrklock);
		1003
710	return 0;	1004	return 0;
711	}	1005	}
712		1006
713	/*****************************************************************************/	1007	/*****************************************************************************/
714		1008
715	static void atfork_prepare (void)	1009	static void atfork_prepare (void)
716	{	1010	{
717	pthread_mutex_lock (&reqlock);	1011	LOCK (wrklock);
718	pthread_mutex_lock (&reslock);	1012	LOCK (reqlock);
		1013	LOCK (reslock);
719	#if !HAVE_PREADWRITE	1014	#if !HAVE_PREADWRITE
720	pthread_mutex_lock (&preadwritelock);	1015	LOCK (preadwritelock);
721	#endif	1016	#endif
722	#if !HAVE_READDIR_R	1017	#if !HAVE_READDIR_R
723	pthread_mutex_lock (&readdirlock);	1018	LOCK (readdirlock);
724	#endif	1019	#endif
725	}	1020	}
726		1021
727	static void atfork_parent (void)	1022	static void atfork_parent (void)
728	{	1023	{
729	#if !HAVE_READDIR_R	1024	#if !HAVE_READDIR_R
730	pthread_mutex_unlock (&readdirlock);	1025	UNLOCK (readdirlock);
731	#endif	1026	#endif
732	#if !HAVE_PREADWRITE	1027	#if !HAVE_PREADWRITE
733	pthread_mutex_unlock (&preadwritelock);	1028	UNLOCK (preadwritelock);
734	#endif	1029	#endif
735	pthread_mutex_unlock (&reslock);	1030	UNLOCK (reslock);
736	pthread_mutex_unlock (&reqlock);	1031	UNLOCK (reqlock);
		1032	UNLOCK (wrklock);
737	}	1033	}
738		1034
739	static void atfork_child (void)	1035	static void atfork_child (void)
740	{	1036	{
741	aio_req prv;	1037	aio_req prv;
742		1038
		1039	while (prv = reqq_shift (&req_queue))
		1040	req_free (prv);
		1041
		1042	while (prv = reqq_shift (&res_queue))
		1043	req_free (prv);
		1044
		1045	while (wrk_first.next != &wrk_first)
		1046	{
		1047	worker *wrk = wrk_first.next;
		1048
		1049	if (wrk->req)
		1050	req_free (wrk->req);
		1051
		1052	worker_clear (wrk);
		1053	worker_free (wrk);
		1054	}
		1055
743	started = 0;	1056	started = 0;
744		1057	nreqs = 0;
745	while (reqs)
746	{
747	prv = reqs;
748	reqs = prv->next;
749	free_req (prv);
750	}
751
752	reqs = reqe = 0;
753
754	while (ress)
755	{
756	prv = ress;
757	ress = prv->next;
758	free_req (prv);
759	}
760
761	ress = rese = 0;
762		1058
763	close (respipe [0]);	1059	close (respipe [0]);
764	close (respipe [1]);	1060	close (respipe [1]);
765	create_pipe ();	1061	create_pipe ();
766		1062
767	atfork_parent ();	1063	atfork_parent ();
768	}	1064	}
769		1065
770	#define dREQ \	1066	#define dREQ \
771	aio_req req; \	1067	aio_req req; \
		1068	int req_pri = next_pri; \
		1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
772	\	1070	\
773	if (SvOK (callback) && !SvROK (callback)) \	1071	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	1072	croak ("callback must be undef or of reference type"); \
775	\	1073	\
776	Newz (0, req, 1, aio_cb); \	1074	Newz (0, req, 1, aio_cb); \
777	if (!req) \	1075	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	1076	croak ("out of memory during aio_req allocation"); \
779	\	1077	\
780	req->callback = newSVsv (callback);	1078	req->callback = newSVsv (callback); \
		1079	req->pri = req_pri
		1080
		1081	#define REQ_SEND \
		1082	req_send (req); \
		1083	\
		1084	if (GIMME_V != G_VOID) \
		1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		1086
782	MODULE = IO::AIO PACKAGE = IO::AIO	1087	MODULE = IO::AIO PACKAGE = IO::AIO
783		1088
784	PROTOTYPES: ENABLE	1089	PROTOTYPES: ENABLE
785		1090
…		…
817	SV * pathname	1122	SV * pathname
818	int flags	1123	int flags
819	int mode	1124	int mode
820	SV * callback	1125	SV * callback
821	PROTOTYPE: $$$;$	1126	PROTOTYPE: $$$;$
822	CODE:	1127	PPCODE:
823	{	1128	{
824	dREQ;	1129	dREQ;
825		1130
826	req->type = REQ_OPEN;	1131	req->type = REQ_OPEN;
827	req->data = newSVsv (pathname);	1132	req->data = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	1133	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1134	req->fd = flags;
830	req->mode = mode;	1135	req->mode = mode;
831		1136
832	send_req (req);	1137	REQ_SEND;
833	}	1138	}
834		1139
835	void	1140	void
836	aio_close (fh,callback=&PL_sv_undef)	1141	aio_close (fh,callback=&PL_sv_undef)
837	SV * fh	1142	SV * fh
…		…
839	PROTOTYPE: $;$	1144	PROTOTYPE: $;$
840	ALIAS:	1145	ALIAS:
841	aio_close = REQ_CLOSE	1146	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1147	aio_fsync = REQ_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1148	aio_fdatasync = REQ_FDATASYNC
844	CODE:	1149	PPCODE:
845	{	1150	{
846	dREQ;	1151	dREQ;
847		1152
848	req->type = ix;	1153	req->type = ix;
849	req->fh = newSVsv (fh);	1154	req->fh = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		1156
852	send_req (req);	1157	REQ_SEND (req);
853	}	1158	}
854		1159
855	void	1160	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
857	SV * fh	1162	SV * fh
…		…
862	SV * callback	1167	SV * callback
863	ALIAS:	1168	ALIAS:
864	aio_read = REQ_READ	1169	aio_read = REQ_READ
865	aio_write = REQ_WRITE	1170	aio_write = REQ_WRITE
866	PROTOTYPE: $$$$$;$	1171	PROTOTYPE: $$$$$;$
867	CODE:	1172	PPCODE:
868	{	1173	{
869	aio_req req;	1174	aio_req req;
870	STRLEN svlen;	1175	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	1176	char *svptr = SvPVbyte (data, svlen);
872		1177
…		…
910	{	1215	{
911	SvREADONLY_on (data);	1216	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1217	req->data2ptr = (void *)data;
913	}	1218	}
914		1219
915	send_req (req);	1220	REQ_SEND;
916	}	1221	}
917	}	1222	}
918		1223
919	void	1224	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
922	SV * in_fh	1227	SV * in_fh
923	UV in_offset	1228	UV in_offset
924	UV length	1229	UV length
925	SV * callback	1230	SV * callback
926	PROTOTYPE: $$$$;$	1231	PROTOTYPE: $$$$;$
927	CODE:	1232	PPCODE:
928	{	1233	{
929	dREQ;	1234	dREQ;
930		1235
931	req->type = REQ_SENDFILE;	1236	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);	1237	req->fh = newSVsv (out_fh);
…		…
934	req->fh2 = newSVsv (in_fh);	1239	req->fh2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	1241	req->offset = in_offset;
937	req->length = length;	1242	req->length = length;
938		1243
939	send_req (req);	1244	REQ_SEND;
940	}	1245	}
941		1246
942	void	1247	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944	SV * fh	1249	SV * fh
945	UV offset	1250	UV offset
946	IV length	1251	IV length
947	SV * callback	1252	SV * callback
948	PROTOTYPE: $$$;$	1253	PROTOTYPE: $$$;$
949	CODE:	1254	PPCODE:
950	{	1255	{
951	dREQ;	1256	dREQ;
952		1257
953	req->type = REQ_READAHEAD;	1258	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);	1259	req->fh = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	1261	req->offset = offset;
957	req->length = length;	1262	req->length = length;
958		1263
959	send_req (req);	1264	REQ_SEND;
960	}	1265	}
961		1266
962	void	1267	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1268	aio_stat (fh_or_path,callback=&PL_sv_undef)
964	SV * fh_or_path	1269	SV * fh_or_path
965	SV * callback	1270	SV * callback
966	ALIAS:	1271	ALIAS:
967	aio_stat = REQ_STAT	1272	aio_stat = REQ_STAT
968	aio_lstat = REQ_LSTAT	1273	aio_lstat = REQ_LSTAT
969	CODE:	1274	PPCODE:
970	{	1275	{
971	dREQ;	1276	dREQ;
972		1277
973	New (0, req->statdata, 1, Stat_t);	1278	New (0, req->statdata, 1, Stat_t);
974	if (!req->statdata)	1279	if (!req->statdata)
975	{	1280	{
976	free_req (req);	1281	req_free (req);
977	croak ("out of memory during aio_req->statdata allocation");	1282	croak ("out of memory during aio_req->statdata allocation");
978	}	1283	}
979		1284
980	if (SvPOK (fh_or_path))	1285	if (SvPOK (fh_or_path))
981	{	1286	{
…		…
988	req->type = REQ_FSTAT;	1293	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);	1294	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}	1296	}
992		1297
993	send_req (req);	1298	REQ_SEND;
994	}	1299	}
995		1300
996	void	1301	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1302	aio_unlink (pathname,callback=&PL_sv_undef)
998	SV * pathname	1303	SV * pathname
999	SV * callback	1304	SV * callback
1000	ALIAS:	1305	ALIAS:
1001	aio_unlink = REQ_UNLINK	1306	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR	1307	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1308	aio_readdir = REQ_READDIR
1004	CODE:	1309	PPCODE:
1005	{	1310	{
1006	dREQ;	1311	dREQ;
1007		1312
1008	req->type = ix;	1313	req->type = ix;
1009	req->data = newSVsv (pathname);	1314	req->data = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1315	req->dataptr = SvPVbyte_nolen (req->data);
1011		1316
1012	send_req (req);	1317	REQ_SEND;
1013	}	1318	}
1014		1319
1015	void	1320	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1017	SV * oldpath	1322	SV * oldpath
…		…
1019	SV * callback	1324	SV * callback
1020	ALIAS:	1325	ALIAS:
1021	aio_link = REQ_LINK	1326	aio_link = REQ_LINK
1022	aio_symlink = REQ_SYMLINK	1327	aio_symlink = REQ_SYMLINK
1023	aio_rename = REQ_RENAME	1328	aio_rename = REQ_RENAME
1024	CODE:	1329	PPCODE:
1025	{	1330	{
1026	dREQ;	1331	dREQ;
1027		1332
1028	req->type = ix;	1333	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1334	req->fh = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1335	req->data2ptr = SvPVbyte_nolen (req->fh);
1031	req->data = newSVsv (newpath);	1336	req->data = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	1337	req->dataptr = SvPVbyte_nolen (req->data);
1033		1338
1034	send_req (req);	1339	REQ_SEND;
1035	}	1340	}
		1341
		1342	void
		1343	aio_busy (delay,callback=&PL_sv_undef)
		1344	double delay
		1345	SV * callback
		1346	PPCODE:
		1347	{
		1348	dREQ;
		1349
		1350	req->type = REQ_BUSY;
		1351	req->fd = delay < 0. ? 0 : delay;
		1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_group (callback=&PL_sv_undef)
		1359	SV * callback
		1360	PROTOTYPE: ;$
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->type = REQ_GROUP;
		1366	req_send (req);
		1367
		1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1369	}
		1370
		1371	void
		1372	aio_nop (callback=&PL_sv_undef)
		1373	SV * callback
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = REQ_NOP;
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aioreq_pri (int pri = DEFAULT_PRI)
		1385	CODE:
		1386	if (pri < PRI_MIN) pri = PRI_MIN;
		1387	if (pri > PRI_MAX) pri = PRI_MAX;
		1388	next_pri = pri + PRI_BIAS;
		1389
		1390	void
		1391	aioreq_nice (int nice = 0)
		1392	CODE:
		1393	nice = next_pri - nice;
		1394	if (nice < PRI_MIN) nice = PRI_MIN;
		1395	if (nice > PRI_MAX) nice = PRI_MAX;
		1396	next_pri = nice + PRI_BIAS;
1036		1397
1037	void	1398	void
1038	flush ()	1399	flush ()
1039	PROTOTYPE:	1400	PROTOTYPE:
1040	CODE:	1401	CODE:
…		…
1083	CODE:	1444	CODE:
1084	RETVAL = nreqs;	1445	RETVAL = nreqs;
1085	OUTPUT:	1446	OUTPUT:
1086	RETVAL	1447	RETVAL
1087		1448
		1449	PROTOTYPES: DISABLE
		1450
		1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1452
		1453	void
		1454	cancel (aio_req_ornot req)
		1455	CODE:
		1456	req_cancel (req);
		1457
		1458	void
		1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1460	CODE:
		1461	SvREFCNT_dec (req->callback);
		1462	req->callback = newSVsv (callback);
		1463
		1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1465
		1466	void
		1467	add (aio_req grp, ...)
		1468	PPCODE:
		1469	{
		1470	int i;
		1471	aio_req req;
		1472
		1473	if (grp->fd == 2)
		1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1475
		1476	for (i = 1; i < items; ++i )
		1477	{
		1478	if (GIMME_V != G_VOID)
		1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1480
		1481	req = SvAIO_REQ (ST (i));
		1482
		1483	if (req)
		1484	{
		1485	++grp->length;
		1486	req->grp = grp;
		1487
		1488	req->grp_prev = 0;
		1489	req->grp_next = grp->grp_first;
		1490
		1491	if (grp->grp_first)
		1492	grp->grp_first->grp_prev = req;
		1493
		1494	grp->grp_first = req;
		1495	}
		1496	}
		1497	}
		1498
		1499	void
		1500	result (aio_req grp, ...)
		1501	CODE:
		1502	{
		1503	int i;
		1504	AV *av = newAV ();
		1505
		1506	for (i = 1; i < items; ++i )
		1507	av_push (av, newSVsv (ST (i)));
		1508
		1509	SvREFCNT_dec (grp->data);
		1510	grp->data = (SV *)av;
		1511	}
		1512
		1513	void
		1514	limit (aio_req grp, int limit)
		1515	CODE:
		1516	grp->fd2 = limit;
		1517	aio_grp_feed (grp);
		1518
		1519	void
		1520	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1521	CODE:
		1522	{
		1523	SvREFCNT_dec (grp->fh2);
		1524	grp->fh2 = newSVsv (callback);
		1525
		1526	if (grp->fd2 <= 0)
		1527	grp->fd2 = 2;
		1528
		1529	aio_grp_feed (grp);
		1530	}
		1531

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