[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 1.53 by root, Mon Oct 23 00:17:07 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_SLEEP,
		61	REQ_GROUP,
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_SLEEP:
		265	break;
		266
		267	default:
		268	PUSHs (sv_2mortal (newSViv (req->result)));
		269	break;
		270	}
		271
		272
		273	PUTBACK;
		274	call_sv (req->callback, G_VOID \| G_EVAL);
		275	SPAGAIN;
		276
		277	FREETMPS;
		278	LEAVE;
		279
		280	errno = errorno;
		281
		282	if (SvTRUE (ERRSV))
		283	{
		284	req_free (req);
		285	croak (0);
		286	}
		287	}
		288
		289	static void req_free (aio_req req)
		290	{
		291	if (req->grp)
		292	{
		293	aio_req grp = req->grp;
		294
		295	/* unlink request */
		296	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		297	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		298
		299	if (grp->grp_first == req)
		300	grp->grp_first = req->grp_next;
		301
		302	aio_grp_dec (grp);
		303	}
		304
		305	if (req->self)
		306	{
		307	sv_unmagic (req->self, PERL_MAGIC_ext);
		308	SvREFCNT_dec (req->self);
		309	}
		310
		311	SvREFCNT_dec (req->data);
		312	SvREFCNT_dec (req->fh);
		313	SvREFCNT_dec (req->fh2);
		314	SvREFCNT_dec (req->callback);
		315	Safefree (req->statdata);
		316
		317	if (req->type == REQ_READDIR && req->result >= 0)
		318	free (req->data2ptr);
		319
		320	Safefree (req);
		321	}
		322
		323	static void req_cancel (aio_req req)
		324	{
		325	req->cancelled = 1;
		326
		327	if (req->type == REQ_GROUP)
		328	{
		329	aio_req sub;
		330
		331	for (sub = req->grp_first; sub; sub = sub->grp_next)
		332	req_cancel (sub);
		333	}
		334	}
		335
		336	static int poll_cb ()
120	{	337	{
121	dSP;	338	dSP;
122	int count = 0;	339	int count = 0;
123	int do_croak = 0;	340	int do_croak = 0;
124	aio_req req;	341	aio_req req;
…		…
146	pthread_mutex_unlock (&reslock);	363	pthread_mutex_unlock (&reslock);
147		364
148	if (!req)	365	if (!req)
149	break;	366	break;
150		367
151	nreqs--;	368	--nreqs;
152		369
153	if (req->type == REQ_QUIT)	370	if (req->type == REQ_QUIT)
154	started--;	371	started--;
		372	else if (req->type == REQ_GROUP && req->length)
		373	{
		374	req->fd = 1; /* mark request as delayed */
		375	continue;
		376	}
155	else	377	else
156	{	378	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	379	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162		381
163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	382	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	383	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	388	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	389	PL_statcache = *(req->statdata);
171	}	390	}
172		391
173	ENTER;	392	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		393
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++;	394	count++;
209	}	395	}
210		396
211	free_req (req);	397	req_free (req);
212	}	398	}
213		399
214	return count;	400	return count;
215	}	401	}
216		402
217	static void aio_proc(void arg);	403	static void aio_proc(void arg);
218		404
219	static void
220	start_thread (void)	405	static void start_thread (void)
221	{	406	{
222	sigset_t fullsigset, oldsigset;	407	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	408	pthread_t tid;
224	pthread_attr_t attr;	409	pthread_attr_t attr;
225		410
…		…
234	started++;	419	started++;
235		420
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	422	}
238		423
239	static void	424	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	425	{
242	while (started < wanted && nreqs >= started)	426	while (started < wanted && nreqs >= started)
243	start_thread ();	427	start_thread ();
244		428
245	nreqs++;	429	++nreqs;
246		430
247	pthread_mutex_lock (&reqlock);	431	pthread_mutex_lock (&reqlock);
248		432
249	req->next = 0;	433	req->next = 0;
250		434
…		…
269		453
270	poll_wait ();	454	poll_wait ();
271	}	455	}
272	}	456	}
273		457
274	static void	458	static void end_thread (void)
275	end_thread (void)
276	{	459	{
277	aio_req req;	460	aio_req req;
278	Newz (0, req, 1, aio_cb);	461	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;	462	req->type = REQ_QUIT;
280		463
281	send_req (req);	464	req_send (req);
282	}	465	}
283		466
284	static void min_parallel (int nthreads)	467	static void min_parallel (int nthreads)
285	{	468	{
286	if (wanted < nthreads)	469	if (wanted < nthreads)
…		…
315	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	498	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316	croak ("cannot set result pipe to nonblocking mode");	499	croak ("cannot set result pipe to nonblocking mode");
317		500
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	501	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	502	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	}	503	}
364		504
365	/*****************************************************************************/	505	/*****************************************************************************/
366	/* work around various missing functions */	506	/* work around various missing functions */
367		507
…		…
372	/*	512	/*
373	* make our pread/pwrite safe against themselves, but not against	513	* make our pread/pwrite safe against themselves, but not against
374	* normal read/write by using a mutex. slows down execution a lot,	514	* normal read/write by using a mutex. slows down execution a lot,
375	* but that's your problem, not mine.	515	* but that's your problem, not mine.
376	*/	516	*/
377	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	517	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
378		518
379	static ssize_t	519	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	{	520	{
382	ssize_t res;	521	ssize_t res;
383	off_t ooffset;	522	off_t ooffset;
384		523
385	pthread_mutex_lock (&iolock);	524	pthread_mutex_lock (&preadwritelock);
386	ooffset = lseek (fd, 0, SEEK_CUR);	525	ooffset = lseek (fd, 0, SEEK_CUR);
387	lseek (fd, offset, SEEK_SET);	526	lseek (fd, offset, SEEK_SET);
388	res = read (fd, buf, count);	527	res = read (fd, buf, count);
389	lseek (fd, ooffset, SEEK_SET);	528	lseek (fd, ooffset, SEEK_SET);
390	pthread_mutex_unlock (&iolock);	529	pthread_mutex_unlock (&preadwritelock);
391		530
392	return res;	531	return res;
393	}	532	}
394		533
395	static ssize_t
396	pwrite (int fd, void *buf, size_t count, off_t offset)	534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
397	{	535	{
398	ssize_t res;	536	ssize_t res;
399	off_t ooffset;	537	off_t ooffset;
400		538
401	pthread_mutex_lock (&iolock);	539	pthread_mutex_lock (&preadwritelock);
402	ooffset = lseek (fd, 0, SEEK_CUR);	540	ooffset = lseek (fd, 0, SEEK_CUR);
403	lseek (fd, offset, SEEK_SET);	541	lseek (fd, offset, SEEK_SET);
404	res = write (fd, buf, count);	542	res = write (fd, buf, count);
405	lseek (fd, offset, SEEK_SET);	543	lseek (fd, offset, SEEK_SET);
406	pthread_mutex_unlock (&iolock);	544	pthread_mutex_unlock (&preadwritelock);
407		545
408	return res;	546	return res;
409	}	547	}
410	#endif	548	#endif
411		549
…		…
414	#endif	552	#endif
415		553
416	#if !HAVE_READAHEAD	554	#if !HAVE_READAHEAD
417	# define readahead aio_readahead	555	# define readahead aio_readahead
418		556
		557	static ssize_t readahead (int fd, off_t offset, size_t count)
		558	{
419	static char readahead_buf[4096];	559	char readahead_buf[4096];
420		560
421	static ssize_t
422	readahead (int fd, off_t offset, size_t count)
423	{
424	while (count > 0)	561	while (count > 0)
425	{	562	{
426	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
427		564
428	pread (fd, readahead_buf, len, offset);	565	pread (fd, readahead_buf, len, offset);
…		…
432		569
433	errno = 0;	570	errno = 0;
434	}	571	}
435	#endif	572	#endif
436		573
		574	#if !HAVE_READDIR_R
		575	# define readdir_r aio_readdir_r
		576
		577	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		578
		579	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		580	{
		581	struct dirent *e;
		582	int errorno;
		583
		584	pthread_mutex_lock (&readdirlock);
		585
		586	e = readdir (dirp);
		587	errorno = errno;
		588
		589	if (e)
		590	{
		591	*res = ent;
		592	strcpy (ent->d_name, e->d_name);
		593	}
		594	else
		595	*res = 0;
		596
		597	pthread_mutex_unlock (&readdirlock);
		598
		599	errno = errorno;
		600	return e ? 0 : -1;
		601	}
		602	#endif
		603
437	/* sendfile always needs emulation */	604	/* sendfile always needs emulation */
438	static ssize_t
439	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	605	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440	{	606	{
441	ssize_t res;	607	ssize_t res;
442		608
443	if (!count)	609	if (!count)
444	return 0;	610	return 0;
445		611
446	#if HAVE_SENDFILE	612	#if HAVE_SENDFILE
447	# if __linux	613	# if __linux
448	res = sendfile (ofd, ifd, &offset, count);	614	res = sendfile (ofd, ifd, &offset, count);
449		615
450	# elif __freebsd	616	# elif __freebsd
451	/*	617	/*
452	* Of course, the freebsd sendfile is a dire hack with no thoughts	618	* Of course, the freebsd sendfile is a dire hack with no thoughts
453	* wasted on making it similar to other I/O functions.	619	* wasted on making it similar to other I/O functions.
454	*/	620	*/
455	{	621	{
456	off_t sbytes;	622	off_t sbytes;
457	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458		624
459	if (res < 0 && sbytes)	625	if (res < 0 && sbytes)
460	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461	res = sbytes;	627	res = sbytes;
462	}	628	}
463		629
464	# elif __hpux	630	# elif __hpux
465	res = sendfile (ofd, ifd, offset, count, 0, 0);	631	res = sendfile (ofd, ifd, offset, count, 0, 0);
466		632
467	# elif __solaris	633	# elif __solaris
468	{	634	{
469	struct sendfilevec vec;	635	struct sendfilevec vec;
470	size_t sbytes;	636	size_t sbytes;
471		637
472	vec.sfv_fd = ifd;	638	vec.sfv_fd = ifd;
473	vec.sfv_flag = 0;	639	vec.sfv_flag = 0;
474	vec.sfv_off = offset;	640	vec.sfv_off = offset;
475	vec.sfv_len = count;	641	vec.sfv_len = count;
476		642
477	res = sendfilev (ofd, &vec, 1, &sbytes);	643	res = sendfilev (ofd, &vec, 1, &sbytes);
478		644
479	if (res < 0 && sbytes)	645	if (res < 0 && sbytes)
480	res = sbytes;	646	res = sbytes;
481	}	647	}
482		648
483	# else
484	res = -1;
485	errno = ENOSYS;
486	# endif	649	# endif
		650	#else
		651	res = -1;
		652	errno = ENOSYS;
487	#endif	653	#endif
488		654
489	if (res < 0	655	if (res < 0
490	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	656	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
491	#if __solaris	657	#if __solaris
492	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	658	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
493	#endif	659	#endif
494	)	660	)
495	)	661	)
496	{	662	{
497	/* emulate sendfile. this is a major pain in the ass */	663	/* emulate sendfile. this is a major pain in the ass */
498	char *buf = malloc (4096);	664	char buf[4096];
499	res = 0;	665	res = 0;
500		666
501	for (;;)	667	while (count)
502	{	668	{
503	ssize_t cnt;	669	ssize_t cnt;
504		670
505	cnt = pread (ifd, buf, 4096, offset);	671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
506		672
507	if (cnt <= 0)	673	if (cnt <= 0)
508	{	674	{
509	if (cnt && !res) res = -1;	675	if (cnt && !res) res = -1;
510	break;	676	break;
511	}	677	}
512		678
513	cnt = write (ofd, buf, cnt);	679	cnt = write (ofd, buf, cnt);
514		680
515	if (cnt <= 0)	681	if (cnt <= 0)
516	{	682	{
517	if (cnt && !res) res = -1;	683	if (cnt && !res) res = -1;
518	break;	684	break;
519	}	685	}
520		686
521	offset += cnt;	687	offset += cnt;
522	res += cnt;	688	res += cnt;
		689	count -= cnt;
523	}	690	}
524
525	{
526	int errorno = errno;
527	free (buf);
528	errno = errorno;
529	}
530	}	691	}
531		692
532	return res;	693	return res;
		694	}
		695
		696	/* read a full directory */
		697	static int scandir_ (const char path, void *namesp)
		698	{
		699	DIR *dirp = opendir (path);
		700	union
		701	{
		702	struct dirent d;
		703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		704	} u;
		705	struct dirent *entp;
		706	char name, names;
		707	int memlen = 4096;
		708	int memofs = 0;
		709	int res = 0;
		710	int errorno;
		711
		712	if (!dirp)
		713	return -1;
		714
		715	names = malloc (memlen);
		716
		717	for (;;)
		718	{
		719	errno = 0, readdir_r (dirp, &u.d, &entp);
		720
		721	if (!entp)
		722	break;
		723
		724	name = entp->d_name;
		725
		726	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		727	{
		728	int len = strlen (name) + 1;
		729
		730	res++;
		731
		732	while (memofs + len > memlen)
		733	{
		734	memlen *= 2;
		735	names = realloc (names, memlen);
		736	if (!names)
		737	break;
		738	}
		739
		740	memcpy (names + memofs, name, len);
		741	memofs += len;
		742	}
		743	}
		744
		745	errorno = errno;
		746	closedir (dirp);
		747
		748	if (errorno)
		749	{
		750	free (names);
		751	errno = errorno;
		752	res = -1;
		753	}
		754
		755	namesp = (void )names;
		756	return res;
533	}	757	}
534		758
535	/*****************************************************************************/	759	/*****************************************************************************/
536		760
537	static void *
538	aio_proc (void *thr_arg)	761	static void aio_proc (void thr_arg)
539	{	762	{
540	aio_req req;	763	aio_req req;
541	int type;	764	int type;
542		765
543	do	766	do
…		…
562		785
563	pthread_mutex_unlock (&reqlock);	786	pthread_mutex_unlock (&reqlock);
564		787
565	errno = 0; /* strictly unnecessary */	788	errno = 0; /* strictly unnecessary */
566		789
567	type = req->type;	790	if (!req->cancelled)
568		791	switch (type = req->type) /* remember type for QUIT check */
569	switch (type)
570	{	792	{
571	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	793	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;	794	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573		795
574	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	796	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;	797	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576		798
577	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	799	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	800	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	801	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580		802
581	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	803	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582	case REQ_CLOSE: req->result = close (req->fd); break;	804	case REQ_CLOSE: req->result = close (req->fd); break;
583	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	806	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
585	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	809	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586		810
587	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588	case REQ_FSYNC: req->result = fsync (req->fd); break;	812	case REQ_FSYNC: req->result = fsync (req->fd); break;
		813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
589		814
		815	case REQ_SLEEP:
		816	{
		817	struct timeval tv;
		818
		819	tv.tv_sec = req->fd;
		820	tv.tv_usec = req->fd2;
		821
		822	req->result = select (0, 0, 0, 0, &tv);
		823	}
		824
590	case REQ_QUIT:	825	case REQ_QUIT:
591	break;	826	break;
592		827
593	default:	828	default:
594	req->result = ENOSYS;	829	req->result = ENOSYS;
595	break;	830	break;
596	}	831	}
597		832
598	req->errorno = errno;	833	req->errorno = errno;
599		834
600	pthread_mutex_lock (&reslock);	835	pthread_mutex_lock (&reslock);
601		836
…		…
619	while (type != REQ_QUIT);	854	while (type != REQ_QUIT);
620		855
621	return 0;	856	return 0;
622	}	857	}
623		858
		859	/*****************************************************************************/
		860
		861	static void atfork_prepare (void)
		862	{
		863	pthread_mutex_lock (&reqlock);
		864	pthread_mutex_lock (&reslock);
		865	#if !HAVE_PREADWRITE
		866	pthread_mutex_lock (&preadwritelock);
		867	#endif
		868	#if !HAVE_READDIR_R
		869	pthread_mutex_lock (&readdirlock);
		870	#endif
		871	}
		872
		873	static void atfork_parent (void)
		874	{
		875	#if !HAVE_READDIR_R
		876	pthread_mutex_unlock (&readdirlock);
		877	#endif
		878	#if !HAVE_PREADWRITE
		879	pthread_mutex_unlock (&preadwritelock);
		880	#endif
		881	pthread_mutex_unlock (&reslock);
		882	pthread_mutex_unlock (&reqlock);
		883	}
		884
		885	static void atfork_child (void)
		886	{
		887	aio_req prv;
		888
		889	started = 0;
		890
		891	while (reqs)
		892	{
		893	prv = reqs;
		894	reqs = prv->next;
		895	req_free (prv);
		896	}
		897
		898	reqs = reqe = 0;
		899
		900	while (ress)
		901	{
		902	prv = ress;
		903	ress = prv->next;
		904	req_free (prv);
		905	}
		906
		907	ress = rese = 0;
		908
		909	close (respipe [0]);
		910	close (respipe [1]);
		911	create_pipe ();
		912
		913	atfork_parent ();
		914	}
		915
624	#define dREQ \	916	#define dREQ \
625	aio_req req; \	917	aio_req req; \
626	\	918	\
627	if (SvOK (callback) && !SvROK (callback)) \	919	if (SvOK (callback) && !SvROK (callback)) \
628	croak ("clalback must be undef or of reference type"); \	920	croak ("callback must be undef or of reference type"); \
629	\	921	\
630	Newz (0, req, 1, aio_cb); \	922	Newz (0, req, 1, aio_cb); \
631	if (!req) \	923	if (!req) \
632	croak ("out of memory during aio_req allocation"); \	924	croak ("out of memory during aio_req allocation"); \
633	\	925	\
634	req->callback = newSVsv (callback);	926	req->callback = newSVsv (callback)
		927
		928	#define REQ_SEND \
		929	req_send (req); \
		930	\
		931	if (GIMME_V != G_VOID) \
		932	XPUSHs (req_sv (req, AIO_REQ_KLASS));
635		933
636	MODULE = IO::AIO PACKAGE = IO::AIO	934	MODULE = IO::AIO PACKAGE = IO::AIO
637		935
638	PROTOTYPES: ENABLE	936	PROTOTYPES: ENABLE
639		937
640	BOOT:	938	BOOT:
641	{	939	{
		940	HV *stash = gv_stashpv ("IO::AIO", 1);
		941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		943	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		944
642	create_pipe ();	945	create_pipe ();
643	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644	}	947	}
645		948
646	void	949	void
647	min_parallel(nthreads)	950	min_parallel (nthreads)
648	int nthreads	951	int nthreads
649	PROTOTYPE: $	952	PROTOTYPE: $
650		953
651	void	954	void
652	max_parallel(nthreads)	955	max_parallel (nthreads)
653	int nthreads	956	int nthreads
654	PROTOTYPE: $	957	PROTOTYPE: $
655		958
656	int	959	int
657	max_outstanding(nreqs)	960	max_outstanding (nreqs)
658	int nreqs	961	int nreqs
659	PROTOTYPE: $	962	PROTOTYPE: $
660	CODE:	963	CODE:
661	RETVAL = max_outstanding;	964	RETVAL = max_outstanding;
662	max_outstanding = nreqs;	965	max_outstanding = nreqs;
663		966
664	void	967	void
665	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
666	SV * pathname	969	SV * pathname
667	int flags	970	int flags
668	int mode	971	int mode
669	SV * callback	972	SV * callback
670	PROTOTYPE: $$$;$	973	PROTOTYPE: $$$;$
671	CODE:	974	PPCODE:
672	{	975	{
673	dREQ;	976	dREQ;
674		977
675	req->type = REQ_OPEN;	978	req->type = REQ_OPEN;
676	req->data = newSVsv (pathname);	979	req->data = newSVsv (pathname);
677	req->dataptr = SvPVbyte_nolen (req->data);	980	req->dataptr = SvPVbyte_nolen (req->data);
678	req->fd = flags;	981	req->fd = flags;
679	req->mode = mode;	982	req->mode = mode;
680		983
681	send_req (req);	984	REQ_SEND;
682	}	985	}
683		986
684	void	987	void
685	aio_close(fh,callback=&PL_sv_undef)	988	aio_close (fh,callback=&PL_sv_undef)
686	SV * fh	989	SV * fh
687	SV * callback	990	SV * callback
688	PROTOTYPE: $;$	991	PROTOTYPE: $;$
689	ALIAS:	992	ALIAS:
690	aio_close = REQ_CLOSE	993	aio_close = REQ_CLOSE
691	aio_fsync = REQ_FSYNC	994	aio_fsync = REQ_FSYNC
692	aio_fdatasync = REQ_FDATASYNC	995	aio_fdatasync = REQ_FDATASYNC
693	CODE:	996	PPCODE:
694	{	997	{
695	dREQ;	998	dREQ;
696		999
697	req->type = ix;	1000	req->type = ix;
698	req->fh = newSVsv (fh);	1001	req->fh = newSVsv (fh);
699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
700		1003
701	send_req (req);	1004	REQ_SEND (req);
702	}	1005	}
703		1006
704	void	1007	void
705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
706	SV * fh	1009	SV * fh
707	UV offset	1010	UV offset
708	UV length	1011	UV length
709	SV * data	1012	SV * data
710	UV dataoffset	1013	UV dataoffset
711	SV * callback	1014	SV * callback
712	ALIAS:	1015	ALIAS:
713	aio_read = REQ_READ	1016	aio_read = REQ_READ
714	aio_write = REQ_WRITE	1017	aio_write = REQ_WRITE
715	PROTOTYPE: $$$$$;$	1018	PROTOTYPE: $$$$$;$
716	CODE:	1019	PPCODE:
717	{	1020	{
718	aio_req req;	1021	aio_req req;
719	STRLEN svlen;	1022	STRLEN svlen;
720	char *svptr = SvPVbyte (data, svlen);	1023	char *svptr = SvPVbyte (data, svlen);
721		1024
…		…
759	{	1062	{
760	SvREADONLY_on (data);	1063	SvREADONLY_on (data);
761	req->data2ptr = (void *)data;	1064	req->data2ptr = (void *)data;
762	}	1065	}
763		1066
764	send_req (req);	1067	REQ_SEND;
765	}	1068	}
766	}	1069	}
767		1070
768	void	1071	void
769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1072	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770	SV * out_fh	1073	SV * out_fh
771	SV * in_fh	1074	SV * in_fh
772	UV in_offset	1075	UV in_offset
773	UV length	1076	UV length
774	SV * callback	1077	SV * callback
775	PROTOTYPE: $$$$;$	1078	PROTOTYPE: $$$$;$
776	CODE:	1079	PPCODE:
777	{	1080	{
778	dREQ;	1081	dREQ;
779		1082
780	req->type = REQ_SENDFILE;	1083	req->type = REQ_SENDFILE;
781	req->fh = newSVsv (out_fh);	1084	req->fh = newSVsv (out_fh);
…		…
783	req->fh2 = newSVsv (in_fh);	1086	req->fh2 = newSVsv (in_fh);
784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785	req->offset = in_offset;	1088	req->offset = in_offset;
786	req->length = length;	1089	req->length = length;
787		1090
788	send_req (req);	1091	REQ_SEND;
789	}	1092	}
790		1093
791	void	1094	void
792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1095	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
793	SV * fh	1096	SV * fh
794	UV offset	1097	UV offset
795	IV length	1098	IV length
796	SV * callback	1099	SV * callback
797	PROTOTYPE: $$$;$	1100	PROTOTYPE: $$$;$
798	CODE:	1101	PPCODE:
799	{	1102	{
800	dREQ;	1103	dREQ;
801		1104
802	req->type = REQ_READAHEAD;	1105	req->type = REQ_READAHEAD;
803	req->fh = newSVsv (fh);	1106	req->fh = newSVsv (fh);
804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805	req->offset = offset;	1108	req->offset = offset;
806	req->length = length;	1109	req->length = length;
807		1110
808	send_req (req);	1111	REQ_SEND;
809	}	1112	}
810		1113
811	void	1114	void
812	aio_stat(fh_or_path,callback=&PL_sv_undef)	1115	aio_stat (fh_or_path,callback=&PL_sv_undef)
813	SV * fh_or_path	1116	SV * fh_or_path
814	SV * callback	1117	SV * callback
815	ALIAS:	1118	ALIAS:
816	aio_stat = REQ_STAT	1119	aio_stat = REQ_STAT
817	aio_lstat = REQ_LSTAT	1120	aio_lstat = REQ_LSTAT
818	CODE:	1121	PPCODE:
819	{	1122	{
820	dREQ;	1123	dREQ;
821		1124
822	New (0, req->statdata, 1, Stat_t);	1125	New (0, req->statdata, 1, Stat_t);
823	if (!req->statdata)	1126	if (!req->statdata)
824	{	1127	{
825	free_req (req);	1128	req_free (req);
826	croak ("out of memory during aio_req->statdata allocation");	1129	croak ("out of memory during aio_req->statdata allocation");
827	}	1130	}
828		1131
829	if (SvPOK (fh_or_path))	1132	if (SvPOK (fh_or_path))
830	{	1133	{
…		…
837	req->type = REQ_FSTAT;	1140	req->type = REQ_FSTAT;
838	req->fh = newSVsv (fh_or_path);	1141	req->fh = newSVsv (fh_or_path);
839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840	}	1143	}
841		1144
842	send_req (req);	1145	REQ_SEND;
843	}	1146	}
844		1147
845	void	1148	void
846	aio_unlink(pathname,callback=&PL_sv_undef)	1149	aio_unlink (pathname,callback=&PL_sv_undef)
847	SV * pathname	1150	SV * pathname
848	SV * callback	1151	SV * callback
849	ALIAS:	1152	ALIAS:
850	aio_unlink = REQ_UNLINK	1153	aio_unlink = REQ_UNLINK
851	aio_rmdir = REQ_RMDIR	1154	aio_rmdir = REQ_RMDIR
		1155	aio_readdir = REQ_READDIR
852	CODE:	1156	PPCODE:
853	{	1157	{
854	dREQ;	1158	dREQ;
855		1159
856	req->type = ix;	1160	req->type = ix;
857	req->data = newSVsv (pathname);	1161	req->data = newSVsv (pathname);
858	req->dataptr = SvPVbyte_nolen (req->data);	1162	req->dataptr = SvPVbyte_nolen (req->data);
859		1163
860	send_req (req);	1164	REQ_SEND;
861	}	1165	}
862		1166
863	void	1167	void
864	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)
865	SV * oldpath	1169	SV * oldpath
866	SV * newpath	1170	SV * newpath
867	SV * callback	1171	SV * callback
		1172	ALIAS:
		1173	aio_link = REQ_LINK
		1174	aio_symlink = REQ_SYMLINK
		1175	aio_rename = REQ_RENAME
868	CODE:	1176	PPCODE:
869	{	1177	{
870	dREQ;	1178	dREQ;
871		1179
872	req->type = REQ_SYMLINK;	1180	req->type = ix;
873	req->fh = newSVsv (oldpath);	1181	req->fh = newSVsv (oldpath);
874	req->data2ptr = SvPVbyte_nolen (req->fh);	1182	req->data2ptr = SvPVbyte_nolen (req->fh);
875	req->data = newSVsv (newpath);	1183	req->data = newSVsv (newpath);
876	req->dataptr = SvPVbyte_nolen (req->data);	1184	req->dataptr = SvPVbyte_nolen (req->data);
877		1185
878	send_req (req);	1186	REQ_SEND;
879	}	1187	}
880		1188
881	void	1189	void
		1190	aio_sleep (delay,callback=&PL_sv_undef)
		1191	double delay
		1192	SV * callback
		1193	PPCODE:
		1194	{
		1195	dREQ;
		1196
		1197	req->type = REQ_SLEEP;
		1198	req->fd = delay < 0. ? 0 : delay;
		1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1200
		1201	REQ_SEND;
		1202	}
		1203
		1204	void
		1205	aio_group (callback=&PL_sv_undef)
		1206	SV * callback
		1207	PROTOTYPE: ;$
		1208	PPCODE:
		1209	{
		1210	dREQ;
		1211	req->type = REQ_GROUP;
		1212	req_send (req);
		1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1214	}
		1215
		1216	void
882	flush()	1217	flush ()
883	PROTOTYPE:	1218	PROTOTYPE:
884	CODE:	1219	CODE:
885	while (nreqs)	1220	while (nreqs)
886	{	1221	{
887	poll_wait ();	1222	poll_wait ();
…		…
927	CODE:	1262	CODE:
928	RETVAL = nreqs;	1263	RETVAL = nreqs;
929	OUTPUT:	1264	OUTPUT:
930	RETVAL	1265	RETVAL
931		1266
		1267	PROTOTYPES: DISABLE
		1268
		1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1270
		1271	void
		1272	cancel (aio_req_ornot req)
		1273	PROTOTYPE:
		1274	CODE:
		1275	req_cancel (req);
		1276
		1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1278
		1279	void
		1280	add (aio_req grp, ...)
		1281	PPCODE:
		1282	{
		1283	int i;
		1284	aio_req req;
		1285
		1286	if (grp->fd == 2)
		1287	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1288
		1289	for (i = 1; i < items; ++i )
		1290	{
		1291	if (GIMME_V != G_VOID)
		1292	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1293
		1294	req = SvAIO_REQ (ST (i));
		1295
		1296	if (req)
		1297	{
		1298	++grp->length;
		1299	req->grp = grp;
		1300
		1301	req->grp_prev = 0;
		1302	req->grp_next = grp->grp_first;
		1303
		1304	if (grp->grp_first)
		1305	grp->grp_first->grp_prev = req;
		1306
		1307	grp->grp_first = req;
		1308	}
		1309	}
		1310	}
		1311
		1312	void
		1313	result (aio_req grp, ...)
		1314	CODE:
		1315	{
		1316	int i;
		1317	AV *av = newAV ();
		1318
		1319	for (i = 1; i < items; ++i )
		1320	av_push (av, newSVsv (ST (i)));
		1321
		1322	SvREFCNT_dec (grp->data);
		1323	grp->data = (SV *)av;
		1324	}
		1325
		1326	void
		1327	lock (aio_req grp)
		1328	CODE:
		1329	++grp->length;
		1330
		1331	void
		1332	unlock (aio_req grp)
		1333	CODE:
		1334	aio_grp_dec (grp);
		1335
		1336	void
		1337	feeder_limit (aio_req grp, int limit)
		1338	CODE:
		1339	grp->fd2 = limit;
		1340	aio_grp_feed (grp);
		1341
		1342	void
		1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
		1344	CODE:
		1345	{
		1346	SvREFCNT_dec (grp->fh2);
		1347	grp->fh2 = newSVsv (callback);
		1348
		1349	if (grp->fd2 <= 0)
		1350	grp->fd2 = 2;
		1351
		1352	aio_grp_feed (grp);
		1353	}
		1354

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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 1.53 by root, Mon Oct 23 00:17:07 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 1.53 by root, Mon Oct 23 00:17:07 2006 UTC