[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.55 by root, Mon Oct 23 00:47:29 2006 UTC

…		…
7		7
8	#include "autoconf/config.h"	8	#include "autoconf/config.h"
9		9
10	#include <pthread.h>	10	#include <pthread.h>
11		11
		12	#include <stddef.h>
		13	#include <errno.h>
		14	#include <sys/time.h>
		15	#include <sys/select.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
13	#include <sys/stat.h>	17	#include <sys/stat.h>
14		18	#include <limits.h>
15	#include <unistd.h>	19	#include <unistd.h>
16	#include <fcntl.h>	20	#include <fcntl.h>
17	#include <signal.h>	21	#include <signal.h>
18	#include <sched.h>	22	#include <sched.h>
19		23
…		…
30	# else	34	# else
31	# error sendfile support requested but not available	35	# error sendfile support requested but not available
32	# endif	36	# endif
33	#endif	37	#endif
34		38
		39	/* used for struct dirent, AIX doesn't provide it */
		40	#ifndef NAME_MAX
		41	# define NAME_MAX 4096
		42	#endif
		43
35	#if __ia64	44	#if __ia64
36	# define STACKSIZE 65536	45	# define STACKSIZE 65536
37	#else	46	#else
38	# define STACKSIZE 4096	47	# define STACKSIZE 8192
39	#endif	48	#endif
40		49
41	enum {	50	enum {
42	REQ_QUIT,	51	REQ_QUIT,
43	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,	54	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49	REQ_SYMLINK,	58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_GROUP, REQ_NOP,
		61	REQ_SLEEP,
50	};	62	};
51		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
52	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
53	struct aio_cb *volatile next;	69	struct aio_cb *volatile next;
54		70
55	int type;	71	struct aio_cb grp, grp_prev, grp_next, grp_first;
56		72
57	int fd, fd2;	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;
58	off_t offset;	79	off_t offset;
59	size_t length;	80	size_t length;
60	ssize_t result;	81	ssize_t result;
		82
		83	int type;
		84	int fd, fd2;
		85	int errorno;
		86	STRLEN dataoffset;
61	mode_t mode; /* open */	87	mode_t mode; /* open */
62	int errorno;	88	unsigned char cancelled;
63	SV data, callback;
64	SV fh, fh2;
65	void dataptr, data2ptr;
66	STRLEN dataoffset;
67
68	Stat_t *statdata;
69	} aio_cb;	89	} aio_cb;
70		90
71	typedef aio_cb *aio_req;	91	typedef aio_cb *aio_req;
		92	typedef aio_cb *aio_req_ornot;
72		93
73	static int started, wanted;	94	static int started, wanted;
74	static volatile int nreqs;	95	static volatile int nreqs;
75	static int max_outstanding = 1<<30;	96	static int max_outstanding = 1<<30;
76	static int respipe [2];	97	static int respipe [2];
…		…
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		102
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	103	static volatile aio_req reqs, reqe; /* queue start, queue end */
83	static volatile aio_req ress, rese; /* queue start, queue end */	104	static volatile aio_req ress, rese; /* queue start, queue end */
84		105
		106	static void req_invoke (aio_req req);
85	static void free_req (aio_req req)	107	static void req_free (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		108
		109	/* must be called at most once */
		110	static SV req_sv (aio_req req, const char klass)
		111	{
90	if (req->fh)	112	if (!req->self)
91	SvREFCNT_dec (req->fh);	113	{
		114	req->self = (SV *)newHV ();
		115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		116	}
92		117
93	if (req->fh2)	118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		119	}
		120
		121	static aio_req SvAIO_REQ (SV *sv)
		122	{
		123	MAGIC *mg;
		124
		125	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		126	croak ("object of class " AIO_REQ_KLASS " expected");
		127
		128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		129
		130	return mg ? (aio_req)mg->mg_ptr : 0;
		131	}
		132
		133	static void aio_grp_feed (aio_req grp)
		134	{
		135	while (grp->length < grp->fd2)
		136	{
		137	int old_len = grp->length;
		138
		139	if (grp->fh2 && SvOK (grp->fh2))
		140	{
		141	dSP;
		142
		143	ENTER;
		144	SAVETMPS;
		145	PUSHMARK (SP);
		146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		147	PUTBACK;
		148	call_sv (grp->fh2, G_VOID \| G_EVAL);
		149	SPAGAIN;
		150	FREETMPS;
		151	LEAVE;
		152	}
		153
		154	/* stop if no progress has been made */
		155	if (old_len == grp->length)
		156	{
94	SvREFCNT_dec (req->fh2);	157	SvREFCNT_dec (grp->fh2);
95		158	grp->fh2 = 0;
96	if (req->statdata)	159	break;
97	Safefree (req->statdata);	160	}
98		161	}
99	if (req->callback)
100	SvREFCNT_dec (req->callback);
101
102	Safefree (req);
103	}	162	}
104		163
105	static void	164	static void aio_grp_dec (aio_req grp)
106	poll_wait ()	165	{
		166	--grp->length;
		167
		168	/* call feeder, if applicable */
		169	aio_grp_feed (grp);
		170
		171	/* finish, if done */
		172	if (!grp->length && grp->fd)
		173	{
		174	req_invoke (grp);
		175	req_free (grp);
		176	}
		177	}
		178
		179	static void poll_wait ()
107	{	180	{
108	if (nreqs && !ress)	181	if (nreqs && !ress)
109	{	182	{
110	fd_set rfd;	183	fd_set rfd;
111	FD_ZERO(&rfd);	184	FD_ZERO(&rfd);
…		…
113		186
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	187	select (respipe [0] + 1, &rfd, 0, 0, 0);
115	}	188	}
116	}	189	}
117		190
118	static int	191	static void req_invoke (aio_req req)
119	poll_cb ()	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	{
		208	case REQ_READDIR:
		209	{
		210	SV *rv = &PL_sv_undef;
		211
		212	if (req->result >= 0)
		213	{
		214	char *buf = req->data2ptr;
		215	AV *av = newAV ();
		216
		217	while (req->result)
		218	{
		219	SV *sv = newSVpv (buf, 0);
		220
		221	av_push (av, sv);
		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_NOP:
		265	case REQ_SLEEP:
		266	break;
		267
		268	default:
		269	PUSHs (sv_2mortal (newSViv (req->result)));
		270	break;
		271	}
		272
		273
		274	PUTBACK;
		275	call_sv (req->callback, G_VOID \| G_EVAL);
		276	SPAGAIN;
		277
		278	FREETMPS;
		279	LEAVE;
		280
		281	errno = errorno;
		282
		283	if (SvTRUE (ERRSV))
		284	{
		285	req_free (req);
		286	croak (0);
		287	}
		288	}
		289
		290	static void req_free (aio_req req)
		291	{
		292	if (req->grp)
		293	{
		294	aio_req grp = req->grp;
		295
		296	/* unlink request */
		297	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		298	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		299
		300	if (grp->grp_first == req)
		301	grp->grp_first = req->grp_next;
		302
		303	aio_grp_dec (grp);
		304	}
		305
		306	if (req->self)
		307	{
		308	sv_unmagic (req->self, PERL_MAGIC_ext);
		309	SvREFCNT_dec (req->self);
		310	}
		311
		312	SvREFCNT_dec (req->data);
		313	SvREFCNT_dec (req->fh);
		314	SvREFCNT_dec (req->fh2);
		315	SvREFCNT_dec (req->callback);
		316	Safefree (req->statdata);
		317
		318	if (req->type == REQ_READDIR && req->result >= 0)
		319	free (req->data2ptr);
		320
		321	Safefree (req);
		322	}
		323
		324	static void req_cancel (aio_req req)
		325	{
		326	req->cancelled = 1;
		327
		328	if (req->type == REQ_GROUP)
		329	{
		330	aio_req sub;
		331
		332	for (sub = req->grp_first; sub; sub = sub->grp_next)
		333	req_cancel (sub);
		334	}
		335	}
		336
		337	static int poll_cb ()
120	{	338	{
121	dSP;	339	dSP;
122	int count = 0;	340	int count = 0;
123	int do_croak = 0;	341	int do_croak = 0;
124	aio_req req;	342	aio_req req;
…		…
146	pthread_mutex_unlock (&reslock);	364	pthread_mutex_unlock (&reslock);
147		365
148	if (!req)	366	if (!req)
149	break;	367	break;
150		368
151	nreqs--;	369	--nreqs;
152		370
153	if (req->type == REQ_QUIT)	371	if (req->type == REQ_QUIT)
154	started--;	372	started--;
		373	else if (req->type == REQ_GROUP && req->length)
		374	{
		375	req->fd = 1; /* mark request as delayed */
		376	continue;
		377	}
155	else	378	else
156	{	379	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	380	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	381	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162		382
163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	383	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	384	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	388	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	389	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	390	PL_statcache = *(req->statdata);
171	}	391	}
172		392
173	ENTER;	393	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		394
177	if (req->type == REQ_OPEN)
178	{
179	/* convert fd to fh */
180	SV *fh;
181
182	PUTBACK;
183	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
184	SPAGAIN;
185
186	fh = SvREFCNT_inc (POPs);
187
188	PUSHMARK (SP);
189	XPUSHs (sv_2mortal (fh));
190	}
191
192	if (SvOK (req->callback))
193	{
194	PUTBACK;
195	call_sv (req->callback, G_VOID \| G_EVAL);
196	SPAGAIN;
197
198	if (SvTRUE (ERRSV))
199	{
200	free_req (req);
201	croak (0);
202	}
203	}
204
205	LEAVE;
206
207	errno = errorno;
208	count++;	395	count++;
209	}	396	}
210		397
211	free_req (req);	398	req_free (req);
212	}	399	}
213		400
214	return count;	401	return count;
215	}	402	}
216		403
217	static void aio_proc(void arg);	404	static void aio_proc(void arg);
218		405
219	static void
220	start_thread (void)	406	static void start_thread (void)
221	{	407	{
222	sigset_t fullsigset, oldsigset;	408	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	409	pthread_t tid;
224	pthread_attr_t attr;	410	pthread_attr_t attr;
225		411
…		…
234	started++;	420	started++;
235		421
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	422	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	423	}
238		424
239	static void	425	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	426	{
242	while (started < wanted && nreqs >= started)	427	while (started < wanted && nreqs >= started)
243	start_thread ();	428	start_thread ();
244		429
245	nreqs++;	430	++nreqs;
246		431
247	pthread_mutex_lock (&reqlock);	432	pthread_mutex_lock (&reqlock);
248		433
249	req->next = 0;	434	req->next = 0;
250		435
…		…
269		454
270	poll_wait ();	455	poll_wait ();
271	}	456	}
272	}	457	}
273		458
274	static void	459	static void end_thread (void)
275	end_thread (void)
276	{	460	{
277	aio_req req;	461	aio_req req;
278	Newz (0, req, 1, aio_cb);	462	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;	463	req->type = REQ_QUIT;
280		464
281	send_req (req);	465	req_send (req);
282	}	466	}
283		467
284	static void min_parallel (int nthreads)	468	static void min_parallel (int nthreads)
285	{	469	{
286	if (wanted < nthreads)	470	if (wanted < nthreads)
…		…
315	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
317		501
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	503	croak ("cannot set result pipe to nonblocking mode");
320	}
321
322	static void atfork_prepare (void)
323	{
324	pthread_mutex_lock (&reqlock);
325	pthread_mutex_lock (&reslock);
326	}
327
328	static void atfork_parent (void)
329	{
330	pthread_mutex_unlock (&reslock);
331	pthread_mutex_unlock (&reqlock);
332	}
333
334	static void atfork_child (void)
335	{
336	aio_req prv;
337
338	started = 0;
339
340	while (reqs)
341	{
342	prv = reqs;
343	reqs = prv->next;
344	free_req (prv);
345	}
346
347	reqs = reqe = 0;
348
349	while (ress)
350	{
351	prv = ress;
352	ress = prv->next;
353	free_req (prv);
354	}
355
356	ress = rese = 0;
357
358	close (respipe [0]);
359	close (respipe [1]);
360	create_pipe ();
361
362	atfork_parent ();
363	}	504	}
364		505
365	/*****************************************************************************/	506	/*****************************************************************************/
366	/* work around various missing functions */	507	/* work around various missing functions */
367		508
…		…
372	/*	513	/*
373	* make our pread/pwrite safe against themselves, but not against	514	* make our pread/pwrite safe against themselves, but not against
374	* normal read/write by using a mutex. slows down execution a lot,	515	* normal read/write by using a mutex. slows down execution a lot,
375	* but that's your problem, not mine.	516	* but that's your problem, not mine.
376	*/	517	*/
377	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
378		519
379	static ssize_t	520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
380	pread (int fd, void *buf, size_t count, off_t offset)
381	{	521	{
382	ssize_t res;	522	ssize_t res;
383	off_t ooffset;	523	off_t ooffset;
384		524
385	pthread_mutex_lock (&iolock);	525	pthread_mutex_lock (&preadwritelock);
386	ooffset = lseek (fd, 0, SEEK_CUR);	526	ooffset = lseek (fd, 0, SEEK_CUR);
387	lseek (fd, offset, SEEK_SET);	527	lseek (fd, offset, SEEK_SET);
388	res = read (fd, buf, count);	528	res = read (fd, buf, count);
389	lseek (fd, ooffset, SEEK_SET);	529	lseek (fd, ooffset, SEEK_SET);
390	pthread_mutex_unlock (&iolock);	530	pthread_mutex_unlock (&preadwritelock);
391		531
392	return res;	532	return res;
393	}	533	}
394		534
395	static ssize_t
396	pwrite (int fd, void *buf, size_t count, off_t offset)	535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
397	{	536	{
398	ssize_t res;	537	ssize_t res;
399	off_t ooffset;	538	off_t ooffset;
400		539
401	pthread_mutex_lock (&iolock);	540	pthread_mutex_lock (&preadwritelock);
402	ooffset = lseek (fd, 0, SEEK_CUR);	541	ooffset = lseek (fd, 0, SEEK_CUR);
403	lseek (fd, offset, SEEK_SET);	542	lseek (fd, offset, SEEK_SET);
404	res = write (fd, buf, count);	543	res = write (fd, buf, count);
405	lseek (fd, offset, SEEK_SET);	544	lseek (fd, offset, SEEK_SET);
406	pthread_mutex_unlock (&iolock);	545	pthread_mutex_unlock (&preadwritelock);
407		546
408	return res;	547	return res;
409	}	548	}
410	#endif	549	#endif
411		550
…		…
414	#endif	553	#endif
415		554
416	#if !HAVE_READAHEAD	555	#if !HAVE_READAHEAD
417	# define readahead aio_readahead	556	# define readahead aio_readahead
418		557
		558	static ssize_t readahead (int fd, off_t offset, size_t count)
		559	{
419	static char readahead_buf[4096];	560	char readahead_buf[4096];
420		561
421	static ssize_t
422	readahead (int fd, off_t offset, size_t count)
423	{
424	while (count > 0)	562	while (count > 0)
425	{	563	{
426	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
427		565
428	pread (fd, readahead_buf, len, offset);	566	pread (fd, readahead_buf, len, offset);
…		…
432		570
433	errno = 0;	571	errno = 0;
434	}	572	}
435	#endif	573	#endif
436		574
		575	#if !HAVE_READDIR_R
		576	# define readdir_r aio_readdir_r
		577
		578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		579
		580	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		581	{
		582	struct dirent *e;
		583	int errorno;
		584
		585	pthread_mutex_lock (&readdirlock);
		586
		587	e = readdir (dirp);
		588	errorno = errno;
		589
		590	if (e)
		591	{
		592	*res = ent;
		593	strcpy (ent->d_name, e->d_name);
		594	}
		595	else
		596	*res = 0;
		597
		598	pthread_mutex_unlock (&readdirlock);
		599
		600	errno = errorno;
		601	return e ? 0 : -1;
		602	}
		603	#endif
		604
437	/* sendfile always needs emulation */	605	/* sendfile always needs emulation */
438	static ssize_t
439	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	606	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440	{	607	{
441	ssize_t res;	608	ssize_t res;
442		609
443	if (!count)	610	if (!count)
444	return 0;	611	return 0;
445		612
446	#if HAVE_SENDFILE	613	#if HAVE_SENDFILE
447	# if __linux	614	# if __linux
448	res = sendfile (ofd, ifd, &offset, count);	615	res = sendfile (ofd, ifd, &offset, count);
449		616
450	# elif __freebsd	617	# elif __freebsd
451	/*	618	/*
452	* Of course, the freebsd sendfile is a dire hack with no thoughts	619	* Of course, the freebsd sendfile is a dire hack with no thoughts
453	* wasted on making it similar to other I/O functions.	620	* wasted on making it similar to other I/O functions.
454	*/	621	*/
455	{	622	{
456	off_t sbytes;	623	off_t sbytes;
457	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	624	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458		625
459	if (res < 0 && sbytes)	626	if (res < 0 && sbytes)
460	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	627	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461	res = sbytes;	628	res = sbytes;
462	}	629	}
463		630
464	# elif __hpux	631	# elif __hpux
465	res = sendfile (ofd, ifd, offset, count, 0, 0);	632	res = sendfile (ofd, ifd, offset, count, 0, 0);
466		633
467	# elif __solaris	634	# elif __solaris
468	{	635	{
469	struct sendfilevec vec;	636	struct sendfilevec vec;
470	size_t sbytes;	637	size_t sbytes;
471		638
472	vec.sfv_fd = ifd;	639	vec.sfv_fd = ifd;
473	vec.sfv_flag = 0;	640	vec.sfv_flag = 0;
474	vec.sfv_off = offset;	641	vec.sfv_off = offset;
475	vec.sfv_len = count;	642	vec.sfv_len = count;
476		643
477	res = sendfilev (ofd, &vec, 1, &sbytes);	644	res = sendfilev (ofd, &vec, 1, &sbytes);
478		645
479	if (res < 0 && sbytes)	646	if (res < 0 && sbytes)
480	res = sbytes;	647	res = sbytes;
481	}	648	}
482		649
483	# else
484	res = -1;
485	errno = ENOSYS;
486	# endif	650	# endif
		651	#else
		652	res = -1;
		653	errno = ENOSYS;
487	#endif	654	#endif
488		655
489	if (res < 0	656	if (res < 0
490	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	657	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
491	#if __solaris	658	#if __solaris
492	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	659	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
493	#endif	660	#endif
494	)	661	)
495	)	662	)
496	{	663	{
497	/* emulate sendfile. this is a major pain in the ass */	664	/* emulate sendfile. this is a major pain in the ass */
498	char *buf = malloc (4096);	665	char buf[4096];
499	res = 0;	666	res = 0;
500		667
501	for (;;)	668	while (count)
502	{	669	{
503	ssize_t cnt;	670	ssize_t cnt;
504		671
505	cnt = pread (ifd, buf, 4096, offset);	672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
506		673
507	if (cnt <= 0)	674	if (cnt <= 0)
508	{	675	{
509	if (cnt && !res) res = -1;	676	if (cnt && !res) res = -1;
510	break;	677	break;
511	}	678	}
512		679
513	cnt = write (ofd, buf, cnt);	680	cnt = write (ofd, buf, cnt);
514		681
515	if (cnt <= 0)	682	if (cnt <= 0)
516	{	683	{
517	if (cnt && !res) res = -1;	684	if (cnt && !res) res = -1;
518	break;	685	break;
519	}	686	}
520		687
521	offset += cnt;	688	offset += cnt;
522	res += cnt;	689	res += cnt;
		690	count -= cnt;
523	}	691	}
524
525	{
526	int errorno = errno;
527	free (buf);
528	errno = errorno;
529	}
530	}	692	}
531		693
532	return res;	694	return res;
		695	}
		696
		697	/* read a full directory */
		698	static int scandir_ (const char path, void *namesp)
		699	{
		700	DIR *dirp = opendir (path);
		701	union
		702	{
		703	struct dirent d;
		704	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		705	} u;
		706	struct dirent *entp;
		707	char name, names;
		708	int memlen = 4096;
		709	int memofs = 0;
		710	int res = 0;
		711	int errorno;
		712
		713	if (!dirp)
		714	return -1;
		715
		716	names = malloc (memlen);
		717
		718	for (;;)
		719	{
		720	errno = 0, readdir_r (dirp, &u.d, &entp);
		721
		722	if (!entp)
		723	break;
		724
		725	name = entp->d_name;
		726
		727	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		728	{
		729	int len = strlen (name) + 1;
		730
		731	res++;
		732
		733	while (memofs + len > memlen)
		734	{
		735	memlen *= 2;
		736	names = realloc (names, memlen);
		737	if (!names)
		738	break;
		739	}
		740
		741	memcpy (names + memofs, name, len);
		742	memofs += len;
		743	}
		744	}
		745
		746	errorno = errno;
		747	closedir (dirp);
		748
		749	if (errorno)
		750	{
		751	free (names);
		752	errno = errorno;
		753	res = -1;
		754	}
		755
		756	namesp = (void )names;
		757	return res;
533	}	758	}
534		759
535	/*****************************************************************************/	760	/*****************************************************************************/
536		761
537	static void *
538	aio_proc (void *thr_arg)	762	static void aio_proc (void thr_arg)
539	{	763	{
540	aio_req req;	764	aio_req req;
541	int type;	765	int type;
542		766
543	do	767	do
…		…
562		786
563	pthread_mutex_unlock (&reqlock);	787	pthread_mutex_unlock (&reqlock);
564		788
565	errno = 0; /* strictly unnecessary */	789	errno = 0; /* strictly unnecessary */
566		790
567	type = req->type;	791	if (!req->cancelled)
568		792	switch (type = req->type) /* remember type for QUIT check */
569	switch (type)
570	{	793	{
571	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	794	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
572	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	795	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573		796
574	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	797	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	798	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576		799
577	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	800	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	801	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	802	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580		803
581	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	804	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582	case REQ_CLOSE: req->result = close (req->fd); break;	805	case REQ_CLOSE: req->result = close (req->fd); break;
583	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	806	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	807	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		808	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		809	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
585	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	810	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586		811
587	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	812	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588	case REQ_FSYNC: req->result = fsync (req->fd); break;	813	case REQ_FSYNC: req->result = fsync (req->fd); break;
		814	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
589		815
		816	case REQ_SLEEP:
		817	{
		818	struct timeval tv;
		819
		820	tv.tv_sec = req->fd;
		821	tv.tv_usec = req->fd2;
		822
		823	req->result = select (0, 0, 0, 0, &tv);
		824	}
		825
		826	case REQ_GROUP:
		827	case REQ_NOP:
590	case REQ_QUIT:	828	case REQ_QUIT:
591	break;	829	break;
592		830
593	default:	831	default:
594	req->result = ENOSYS;	832	req->result = ENOSYS;
595	break;	833	break;
596	}	834	}
597		835
598	req->errorno = errno;	836	req->errorno = errno;
599		837
600	pthread_mutex_lock (&reslock);	838	pthread_mutex_lock (&reslock);
601		839
…		…
619	while (type != REQ_QUIT);	857	while (type != REQ_QUIT);
620		858
621	return 0;	859	return 0;
622	}	860	}
623		861
		862	/*****************************************************************************/
		863
		864	static void atfork_prepare (void)
		865	{
		866	pthread_mutex_lock (&reqlock);
		867	pthread_mutex_lock (&reslock);
		868	#if !HAVE_PREADWRITE
		869	pthread_mutex_lock (&preadwritelock);
		870	#endif
		871	#if !HAVE_READDIR_R
		872	pthread_mutex_lock (&readdirlock);
		873	#endif
		874	}
		875
		876	static void atfork_parent (void)
		877	{
		878	#if !HAVE_READDIR_R
		879	pthread_mutex_unlock (&readdirlock);
		880	#endif
		881	#if !HAVE_PREADWRITE
		882	pthread_mutex_unlock (&preadwritelock);
		883	#endif
		884	pthread_mutex_unlock (&reslock);
		885	pthread_mutex_unlock (&reqlock);
		886	}
		887
		888	static void atfork_child (void)
		889	{
		890	aio_req prv;
		891
		892	started = 0;
		893
		894	while (reqs)
		895	{
		896	prv = reqs;
		897	reqs = prv->next;
		898	req_free (prv);
		899	}
		900
		901	reqs = reqe = 0;
		902
		903	while (ress)
		904	{
		905	prv = ress;
		906	ress = prv->next;
		907	req_free (prv);
		908	}
		909
		910	ress = rese = 0;
		911
		912	close (respipe [0]);
		913	close (respipe [1]);
		914	create_pipe ();
		915
		916	atfork_parent ();
		917	}
		918
624	#define dREQ \	919	#define dREQ \
625	aio_req req; \	920	aio_req req; \
626	\	921	\
627	if (SvOK (callback) && !SvROK (callback)) \	922	if (SvOK (callback) && !SvROK (callback)) \
628	croak ("clalback must be undef or of reference type"); \	923	croak ("callback must be undef or of reference type"); \
629	\	924	\
630	Newz (0, req, 1, aio_cb); \	925	Newz (0, req, 1, aio_cb); \
631	if (!req) \	926	if (!req) \
632	croak ("out of memory during aio_req allocation"); \	927	croak ("out of memory during aio_req allocation"); \
633	\	928	\
634	req->callback = newSVsv (callback);	929	req->callback = newSVsv (callback)
		930
		931	#define REQ_SEND \
		932	req_send (req); \
		933	\
		934	if (GIMME_V != G_VOID) \
		935	XPUSHs (req_sv (req, AIO_REQ_KLASS));
635		936
636	MODULE = IO::AIO PACKAGE = IO::AIO	937	MODULE = IO::AIO PACKAGE = IO::AIO
637		938
638	PROTOTYPES: ENABLE	939	PROTOTYPES: ENABLE
639		940
640	BOOT:	941	BOOT:
641	{	942	{
		943	HV *stash = gv_stashpv ("IO::AIO", 1);
		944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		947
642	create_pipe ();	948	create_pipe ();
643	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644	}	950	}
645		951
646	void	952	void
647	min_parallel(nthreads)	953	min_parallel (nthreads)
648	int nthreads	954	int nthreads
649	PROTOTYPE: $	955	PROTOTYPE: $
650		956
651	void	957	void
652	max_parallel(nthreads)	958	max_parallel (nthreads)
653	int nthreads	959	int nthreads
654	PROTOTYPE: $	960	PROTOTYPE: $
655		961
656	int	962	int
657	max_outstanding(nreqs)	963	max_outstanding (nreqs)
658	int nreqs	964	int nreqs
659	PROTOTYPE: $	965	PROTOTYPE: $
660	CODE:	966	CODE:
661	RETVAL = max_outstanding;	967	RETVAL = max_outstanding;
662	max_outstanding = nreqs;	968	max_outstanding = nreqs;
663		969
664	void	970	void
665	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
666	SV * pathname	972	SV * pathname
667	int flags	973	int flags
668	int mode	974	int mode
669	SV * callback	975	SV * callback
670	PROTOTYPE: $$$;$	976	PROTOTYPE: $$$;$
671	CODE:	977	PPCODE:
672	{	978	{
673	dREQ;	979	dREQ;
674		980
675	req->type = REQ_OPEN;	981	req->type = REQ_OPEN;
676	req->data = newSVsv (pathname);	982	req->data = newSVsv (pathname);
677	req->dataptr = SvPVbyte_nolen (req->data);	983	req->dataptr = SvPVbyte_nolen (req->data);
678	req->fd = flags;	984	req->fd = flags;
679	req->mode = mode;	985	req->mode = mode;
680		986
681	send_req (req);	987	REQ_SEND;
682	}	988	}
683		989
684	void	990	void
685	aio_close(fh,callback=&PL_sv_undef)	991	aio_close (fh,callback=&PL_sv_undef)
686	SV * fh	992	SV * fh
687	SV * callback	993	SV * callback
688	PROTOTYPE: $;$	994	PROTOTYPE: $;$
689	ALIAS:	995	ALIAS:
690	aio_close = REQ_CLOSE	996	aio_close = REQ_CLOSE
691	aio_fsync = REQ_FSYNC	997	aio_fsync = REQ_FSYNC
692	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = REQ_FDATASYNC
693	CODE:	999	PPCODE:
694	{	1000	{
695	dREQ;	1001	dREQ;
696		1002
697	req->type = ix;	1003	req->type = ix;
698	req->fh = newSVsv (fh);	1004	req->fh = newSVsv (fh);
699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
700		1006
701	send_req (req);	1007	REQ_SEND (req);
702	}	1008	}
703		1009
704	void	1010	void
705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
706	SV * fh	1012	SV * fh
707	UV offset	1013	UV offset
708	UV length	1014	UV length
709	SV * data	1015	SV * data
710	UV dataoffset	1016	UV dataoffset
711	SV * callback	1017	SV * callback
712	ALIAS:	1018	ALIAS:
713	aio_read = REQ_READ	1019	aio_read = REQ_READ
714	aio_write = REQ_WRITE	1020	aio_write = REQ_WRITE
715	PROTOTYPE: $$$$$;$	1021	PROTOTYPE: $$$$$;$
716	CODE:	1022	PPCODE:
717	{	1023	{
718	aio_req req;	1024	aio_req req;
719	STRLEN svlen;	1025	STRLEN svlen;
720	char *svptr = SvPVbyte (data, svlen);	1026	char *svptr = SvPVbyte (data, svlen);
721		1027
…		…
759	{	1065	{
760	SvREADONLY_on (data);	1066	SvREADONLY_on (data);
761	req->data2ptr = (void *)data;	1067	req->data2ptr = (void *)data;
762	}	1068	}
763		1069
764	send_req (req);	1070	REQ_SEND;
765	}	1071	}
766	}	1072	}
767		1073
768	void	1074	void
769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770	SV * out_fh	1076	SV * out_fh
771	SV * in_fh	1077	SV * in_fh
772	UV in_offset	1078	UV in_offset
773	UV length	1079	UV length
774	SV * callback	1080	SV * callback
775	PROTOTYPE: $$$$;$	1081	PROTOTYPE: $$$$;$
776	CODE:	1082	PPCODE:
777	{	1083	{
778	dREQ;	1084	dREQ;
779		1085
780	req->type = REQ_SENDFILE;	1086	req->type = REQ_SENDFILE;
781	req->fh = newSVsv (out_fh);	1087	req->fh = newSVsv (out_fh);
…		…
783	req->fh2 = newSVsv (in_fh);	1089	req->fh2 = newSVsv (in_fh);
784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785	req->offset = in_offset;	1091	req->offset = in_offset;
786	req->length = length;	1092	req->length = length;
787		1093
788	send_req (req);	1094	REQ_SEND;
789	}	1095	}
790		1096
791	void	1097	void
792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
793	SV * fh	1099	SV * fh
794	UV offset	1100	UV offset
795	IV length	1101	IV length
796	SV * callback	1102	SV * callback
797	PROTOTYPE: $$$;$	1103	PROTOTYPE: $$$;$
798	CODE:	1104	PPCODE:
799	{	1105	{
800	dREQ;	1106	dREQ;
801		1107
802	req->type = REQ_READAHEAD;	1108	req->type = REQ_READAHEAD;
803	req->fh = newSVsv (fh);	1109	req->fh = newSVsv (fh);
804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805	req->offset = offset;	1111	req->offset = offset;
806	req->length = length;	1112	req->length = length;
807		1113
808	send_req (req);	1114	REQ_SEND;
809	}	1115	}
810		1116
811	void	1117	void
812	aio_stat(fh_or_path,callback=&PL_sv_undef)	1118	aio_stat (fh_or_path,callback=&PL_sv_undef)
813	SV * fh_or_path	1119	SV * fh_or_path
814	SV * callback	1120	SV * callback
815	ALIAS:	1121	ALIAS:
816	aio_stat = REQ_STAT	1122	aio_stat = REQ_STAT
817	aio_lstat = REQ_LSTAT	1123	aio_lstat = REQ_LSTAT
818	CODE:	1124	PPCODE:
819	{	1125	{
820	dREQ;	1126	dREQ;
821		1127
822	New (0, req->statdata, 1, Stat_t);	1128	New (0, req->statdata, 1, Stat_t);
823	if (!req->statdata)	1129	if (!req->statdata)
824	{	1130	{
825	free_req (req);	1131	req_free (req);
826	croak ("out of memory during aio_req->statdata allocation");	1132	croak ("out of memory during aio_req->statdata allocation");
827	}	1133	}
828		1134
829	if (SvPOK (fh_or_path))	1135	if (SvPOK (fh_or_path))
830	{	1136	{
…		…
837	req->type = REQ_FSTAT;	1143	req->type = REQ_FSTAT;
838	req->fh = newSVsv (fh_or_path);	1144	req->fh = newSVsv (fh_or_path);
839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840	}	1146	}
841		1147
842	send_req (req);	1148	REQ_SEND;
843	}	1149	}
844		1150
845	void	1151	void
846	aio_unlink(pathname,callback=&PL_sv_undef)	1152	aio_unlink (pathname,callback=&PL_sv_undef)
847	SV * pathname	1153	SV * pathname
848	SV * callback	1154	SV * callback
849	ALIAS:	1155	ALIAS:
850	aio_unlink = REQ_UNLINK	1156	aio_unlink = REQ_UNLINK
851	aio_rmdir = REQ_RMDIR	1157	aio_rmdir = REQ_RMDIR
		1158	aio_readdir = REQ_READDIR
852	CODE:	1159	PPCODE:
853	{	1160	{
854	dREQ;	1161	dREQ;
855		1162
856	req->type = ix;	1163	req->type = ix;
857	req->data = newSVsv (pathname);	1164	req->data = newSVsv (pathname);
858	req->dataptr = SvPVbyte_nolen (req->data);	1165	req->dataptr = SvPVbyte_nolen (req->data);
859		1166
860	send_req (req);	1167	REQ_SEND;
861	}	1168	}
862		1169
863	void	1170	void
864	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)
865	SV * oldpath	1172	SV * oldpath
866	SV * newpath	1173	SV * newpath
867	SV * callback	1174	SV * callback
		1175	ALIAS:
		1176	aio_link = REQ_LINK
		1177	aio_symlink = REQ_SYMLINK
		1178	aio_rename = REQ_RENAME
868	CODE:	1179	PPCODE:
869	{	1180	{
870	dREQ;	1181	dREQ;
871		1182
872	req->type = REQ_SYMLINK;	1183	req->type = ix;
873	req->fh = newSVsv (oldpath);	1184	req->fh = newSVsv (oldpath);
874	req->data2ptr = SvPVbyte_nolen (req->fh);	1185	req->data2ptr = SvPVbyte_nolen (req->fh);
875	req->data = newSVsv (newpath);	1186	req->data = newSVsv (newpath);
876	req->dataptr = SvPVbyte_nolen (req->data);	1187	req->dataptr = SvPVbyte_nolen (req->data);
877		1188
878	send_req (req);	1189	REQ_SEND;
879	}	1190	}
880		1191
881	void	1192	void
		1193	aio_sleep (delay,callback=&PL_sv_undef)
		1194	double delay
		1195	SV * callback
		1196	PPCODE:
		1197	{
		1198	dREQ;
		1199
		1200	req->type = REQ_SLEEP;
		1201	req->fd = delay < 0. ? 0 : delay;
		1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1203
		1204	REQ_SEND;
		1205	}
		1206
		1207	void
		1208	aio_group (callback=&PL_sv_undef)
		1209	SV * callback
		1210	PROTOTYPE: ;$
		1211	PPCODE:
		1212	{
		1213	dREQ;
		1214	req->type = REQ_GROUP;
		1215	req_send (req);
		1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1217	}
		1218
		1219	void
		1220	aio_nop (callback=&PL_sv_undef)
		1221	SV * callback
		1222	PPCODE:
		1223	{
		1224	dREQ;
		1225
		1226	req->type = REQ_NOP;
		1227
		1228	REQ_SEND;
		1229	}
		1230
		1231	void
882	flush()	1232	flush ()
883	PROTOTYPE:	1233	PROTOTYPE:
884	CODE:	1234	CODE:
885	while (nreqs)	1235	while (nreqs)
886	{	1236	{
887	poll_wait ();	1237	poll_wait ();
…		…
927	CODE:	1277	CODE:
928	RETVAL = nreqs;	1278	RETVAL = nreqs;
929	OUTPUT:	1279	OUTPUT:
930	RETVAL	1280	RETVAL
931		1281
		1282	PROTOTYPES: DISABLE
		1283
		1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1285
		1286	void
		1287	cancel (aio_req_ornot req)
		1288	PROTOTYPE:
		1289	CODE:
		1290	req_cancel (req);
		1291
		1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1293
		1294	void
		1295	add (aio_req grp, ...)
		1296	PPCODE:
		1297	{
		1298	int i;
		1299	aio_req req;
		1300
		1301	if (grp->fd == 2)
		1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1303
		1304	for (i = 1; i < items; ++i )
		1305	{
		1306	if (GIMME_V != G_VOID)
		1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1308
		1309	req = SvAIO_REQ (ST (i));
		1310
		1311	if (req)
		1312	{
		1313	++grp->length;
		1314	req->grp = grp;
		1315
		1316	req->grp_prev = 0;
		1317	req->grp_next = grp->grp_first;
		1318
		1319	if (grp->grp_first)
		1320	grp->grp_first->grp_prev = req;
		1321
		1322	grp->grp_first = req;
		1323	}
		1324	}
		1325	}
		1326
		1327	void
		1328	result (aio_req grp, ...)
		1329	CODE:
		1330	{
		1331	int i;
		1332	AV *av = newAV ();
		1333
		1334	for (i = 1; i < items; ++i )
		1335	av_push (av, newSVsv (ST (i)));
		1336
		1337	SvREFCNT_dec (grp->data);
		1338	grp->data = (SV *)av;
		1339	}
		1340
		1341	void
		1342	lock (aio_req grp)
		1343	CODE:
		1344	++grp->length;
		1345
		1346	void
		1347	unlock (aio_req grp)
		1348	CODE:
		1349	aio_grp_dec (grp);
		1350
		1351	void
		1352	feeder_limit (aio_req grp, int limit)
		1353	CODE:
		1354	grp->fd2 = limit;
		1355	aio_grp_feed (grp);
		1356
		1357	void
		1358	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
		1359	CODE:
		1360	{
		1361	SvREFCNT_dec (grp->fh2);
		1362	grp->fh2 = newSVsv (callback);
		1363
		1364	if (grp->fd2 <= 0)
		1365	grp->fd2 = 2;
		1366
		1367	aio_grp_feed (grp);
		1368	}
		1369

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs. Revision 1.55 by root, Mon Oct 23 00:47:29 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.55 by root, Mon Oct 23 00:47:29 2006 UTC