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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.51 by root, Sun Oct 22 22:14:33 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
…		…
23	# elif __freebsd	27	# elif __freebsd
24	# include <sys/socket.h>	28	# include <sys/socket.h>
25	# include <sys/uio.h>	29	# include <sys/uio.h>
26	# elif __hpux	30	# elif __hpux
27	# include <sys/socket.h>	31	# include <sys/socket.h>
		32	# elif __solaris /* not yet */
		33	# include <sys/sendfile.h>
		34	# else
		35	# error sendfile support requested but not available
28	# endif	36	# endif
		37	#endif
		38
		39	/* used for struct dirent, AIX doesn't provide it */
		40	#ifndef NAME_MAX
		41	# define NAME_MAX 4096
29	#endif	42	#endif
30		43
31	#if __ia64	44	#if __ia64
32	# define STACKSIZE 65536	45	# define STACKSIZE 65536
33	#else	46	#else
34	# define STACKSIZE 4096	47	# define STACKSIZE 8192
35	#endif	48	#endif
36		49
37	enum {	50	enum {
38	REQ_QUIT,	51	REQ_QUIT,
39	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
40	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
41	REQ_SENDFILE,	54	REQ_SENDFILE,
42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
44	REQ_UNLINK, REQ_RMDIR,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45	REQ_SYMLINK,	58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_SLEEP,
		61	REQ_GROUP,
46	};	62	};
47		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
48	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
49	struct aio_cb *volatile next;	69	struct aio_cb *volatile next;
50		70
51	int type;	71	struct aio_cb grp, grp_prev, grp_next, grp_first;
52		72
53	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;
54	off_t offset;	79	off_t offset;
55	size_t length;	80	size_t length;
56	ssize_t result;	81	ssize_t result;
		82
		83	int type;
		84	int fd, fd2;
		85	int errorno;
		86	STRLEN dataoffset;
57	mode_t mode; /* open */	87	mode_t mode; /* open */
58	int errorno;	88	unsigned char cancelled;
59	SV data, callback;
60	SV fh, fh2;
61	void dataptr, data2ptr;
62	STRLEN dataoffset;
63
64	Stat_t *statdata;
65	} aio_cb;	89	} aio_cb;
66		90
67	typedef aio_cb *aio_req;	91	typedef aio_cb *aio_req;
		92	typedef aio_cb *aio_req_ornot;
68		93
69	static int started, wanted;	94	static int started, wanted;
70	static volatile int nreqs;	95	static volatile int nreqs;
71	static int max_outstanding = 1<<30;	96	static int max_outstanding = 1<<30;
72	static int respipe [2];	97	static int respipe [2];
…		…
76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77		102
78	static volatile aio_req reqs, reqe; /* queue start, queue end */	103	static volatile aio_req reqs, reqe; /* queue start, queue end */
79	static volatile aio_req ress, rese; /* queue start, queue end */	104	static volatile aio_req ress, rese; /* queue start, queue end */
80		105
		106	static void req_invoke (aio_req req);
81	static void free_req (aio_req req)	107	static void req_free (aio_req req);
82	{
83	if (req->data)
84	SvREFCNT_dec (req->data);
85		108
		109	/* must be called at most once */
		110	static SV req_sv (aio_req req, const char klass)
		111	{
86	if (req->fh)	112	if (!req->self)
87	SvREFCNT_dec (req->fh);	113	{
		114	req->self = (SV *)newHV ();
		115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		116	}
88		117
89	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	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		124	croak ("object of class " AIO_REQ_KLASS " expected");
		125
		126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		127
		128	return mg ? (aio_req)mg->mg_ptr : 0;
		129	}
		130
		131	static void aio_grp_feed (aio_req grp)
		132	{
		133	while (grp->length < grp->fd2)
		134	{
		135	int old_len = grp->length;
		136
		137	if (grp->fh2 && SvOK (grp->fh2))
		138	{
		139	dSP;
		140
		141	ENTER;
		142	SAVETMPS;
		143	PUSHMARK (SP);
		144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		145	PUTBACK;
		146	call_sv (grp->fh2, G_VOID \| G_EVAL);
		147	SPAGAIN;
		148	FREETMPS;
		149	LEAVE;
		150	}
		151
		152	/* stop if no progress has been made */
		153	if (old_len == grp->length)
		154	{
90	SvREFCNT_dec (req->fh2);	155	SvREFCNT_dec (grp->fh2);
91		156	grp->fh2 = 0;
92	if (req->statdata)	157	break;
93	Safefree (req->statdata);	158	}
94		159	}
95	if (req->callback)
96	SvREFCNT_dec (req->callback);
97
98	Safefree (req);
99	}	160	}
100		161
101	static void	162	static void aio_grp_dec (aio_req grp)
102	poll_wait ()	163	{
		164	--grp->length;
		165
		166	/* call feeder, if applicable */
		167	aio_grp_feed (grp);
		168
		169	/* finish, if done */
		170	if (!grp->length && grp->fd)
		171	{
		172	req_invoke (grp);
		173	req_free (grp);
		174	}
		175	}
		176
		177	static void poll_wait ()
103	{	178	{
104	if (nreqs && !ress)	179	if (nreqs && !ress)
105	{	180	{
106	fd_set rfd;	181	fd_set rfd;
107	FD_ZERO(&rfd);	182	FD_ZERO(&rfd);
…		…
109		184
110	select (respipe [0] + 1, &rfd, 0, 0, 0);	185	select (respipe [0] + 1, &rfd, 0, 0, 0);
111	}	186	}
112	}	187	}
113		188
114	static int	189	static void req_invoke (aio_req req)
115	poll_cb ()	190	{
		191	dSP;
		192	int errorno = errno;
		193
		194	if (req->cancelled \|\| !SvOK (req->callback))
		195	return;
		196
		197	errno = req->errorno;
		198
		199	ENTER;
		200	SAVETMPS;
		201	PUSHMARK (SP);
		202	EXTEND (SP, 1);
		203
		204	switch (req->type)
		205	{
		206	case REQ_READDIR:
		207	{
		208	SV *rv = &PL_sv_undef;
		209
		210	if (req->result >= 0)
		211	{
		212	char *buf = req->data2ptr;
		213	AV *av = newAV ();
		214
		215	while (req->result)
		216	{
		217	SV *sv = newSVpv (buf, 0);
		218
		219	av_push (av, sv);
		220	buf += SvCUR (sv) + 1;
		221	req->result--;
		222	}
		223
		224	rv = sv_2mortal (newRV_noinc ((SV *)av));
		225	}
		226
		227	PUSHs (rv);
		228	}
		229	break;
		230
		231	case REQ_OPEN:
		232	{
		233	/* convert fd to fh */
		234	SV *fh;
		235
		236	PUSHs (sv_2mortal (newSViv (req->result)));
		237	PUTBACK;
		238	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		239	SPAGAIN;
		240
		241	fh = SvREFCNT_inc (POPs);
		242
		243	PUSHMARK (SP);
		244	XPUSHs (sv_2mortal (fh));
		245	}
		246	break;
		247
		248	case REQ_GROUP:
		249	req->fd = 2; /* mark group as finished */
		250
		251	if (req->data)
		252	{
		253	int i;
		254	AV av = (AV )req->data;
		255
		256	EXTEND (SP, AvFILL (av) + 1);
		257	for (i = 0; i <= AvFILL (av); ++i)
		258	PUSHs (*av_fetch (av, i, 0));
		259	}
		260	break;
		261
		262	case REQ_SLEEP:
		263	break;
		264
		265	default:
		266	PUSHs (sv_2mortal (newSViv (req->result)));
		267	break;
		268	}
		269
		270
		271	PUTBACK;
		272	call_sv (req->callback, G_VOID \| G_EVAL);
		273	SPAGAIN;
		274
		275	FREETMPS;
		276	LEAVE;
		277
		278	errno = errorno;
		279
		280	if (SvTRUE (ERRSV))
		281	{
		282	req_free (req);
		283	croak (0);
		284	}
		285	}
		286
		287	static void req_free (aio_req req)
		288	{
		289	if (req->grp)
		290	{
		291	aio_req grp = req->grp;
		292
		293	/* unlink request */
		294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		296
		297	if (grp->grp_first == req)
		298	grp->grp_first = req->grp_next;
		299
		300	aio_grp_dec (grp);
		301	}
		302
		303	if (req->self)
		304	{
		305	sv_unmagic (req->self, PERL_MAGIC_ext);
		306	SvREFCNT_dec (req->self);
		307	}
		308
		309	SvREFCNT_dec (req->data);
		310	SvREFCNT_dec (req->fh);
		311	SvREFCNT_dec (req->fh2);
		312	SvREFCNT_dec (req->callback);
		313	Safefree (req->statdata);
		314
		315	if (req->type == REQ_READDIR && req->result >= 0)
		316	free (req->data2ptr);
		317
		318	Safefree (req);
		319	}
		320
		321	static void req_cancel (aio_req req)
		322	{
		323	req->cancelled = 1;
		324
		325	if (req->type == REQ_GROUP)
		326	{
		327	aio_req sub;
		328
		329	for (sub = req->grp_first; sub; sub = sub->grp_next)
		330	req_cancel (sub);
		331	}
		332	}
		333
		334	static int poll_cb ()
116	{	335	{
117	dSP;	336	dSP;
118	int count = 0;	337	int count = 0;
119	int do_croak = 0;	338	int do_croak = 0;
120	aio_req req;	339	aio_req req;
…		…
142	pthread_mutex_unlock (&reslock);	361	pthread_mutex_unlock (&reslock);
143		362
144	if (!req)	363	if (!req)
145	break;	364	break;
146		365
147	nreqs--;	366	--nreqs;
148		367
149	if (req->type == REQ_QUIT)	368	if (req->type == REQ_QUIT)
150	started--;	369	started--;
		370	else if (req->type == REQ_GROUP && req->length)
		371	{
		372	req->fd = 1; /* mark request as delayed */
		373	continue;
		374	}
151	else	375	else
152	{	376	{
153	int errorno = errno;
154	errno = req->errorno;
155
156	if (req->type == REQ_READ)	377	if (req->type == REQ_READ)
157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158		379
159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	380	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
160	SvREADONLY_off (req->data);	381	SvREADONLY_off (req->data);
…		…
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	386	PL_laststatval = req->result;
166	PL_statcache = *(req->statdata);	387	PL_statcache = *(req->statdata);
167	}	388	}
168		389
169	ENTER;	390	req_invoke (req);
170	PUSHMARK (SP);
171	XPUSHs (sv_2mortal (newSViv (req->result)));
172		391
173	if (req->type == REQ_OPEN)
174	{
175	/* convert fd to fh */
176	SV *fh;
177
178	PUTBACK;
179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
180	SPAGAIN;
181
182	fh = SvREFCNT_inc (POPs);
183
184	PUSHMARK (SP);
185	XPUSHs (sv_2mortal (fh));
186	}
187
188	if (SvOK (req->callback))
189	{
190	PUTBACK;
191	call_sv (req->callback, G_VOID \| G_EVAL);
192	SPAGAIN;
193
194	if (SvTRUE (ERRSV))
195	{
196	free_req (req);
197	croak (0);
198	}
199	}
200
201	LEAVE;
202
203	errno = errorno;
204	count++;	392	count++;
205	}	393	}
206		394
207	free_req (req);	395	req_free (req);
208	}	396	}
209		397
210	return count;	398	return count;
211	}	399	}
212		400
213	static void aio_proc(void arg);	401	static void aio_proc(void arg);
214		402
215	static void
216	start_thread (void)	403	static void start_thread (void)
217	{	404	{
218	sigset_t fullsigset, oldsigset;	405	sigset_t fullsigset, oldsigset;
219	pthread_t tid;	406	pthread_t tid;
220	pthread_attr_t attr;	407	pthread_attr_t attr;
221		408
…		…
230	started++;	417	started++;
231		418
232	sigprocmask (SIG_SETMASK, &oldsigset, 0);	419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
233	}	420	}
234		421
235	static void	422	static void req_send (aio_req req)
236	send_req (aio_req req)
237	{	423	{
238	while (started < wanted && nreqs >= started)	424	while (started < wanted && nreqs >= started)
239	start_thread ();	425	start_thread ();
240		426
241	nreqs++;	427	++nreqs;
242		428
243	pthread_mutex_lock (&reqlock);	429	pthread_mutex_lock (&reqlock);
244		430
245	req->next = 0;	431	req->next = 0;
246		432
…		…
265		451
266	poll_wait ();	452	poll_wait ();
267	}	453	}
268	}	454	}
269		455
270	static void	456	static void end_thread (void)
271	end_thread (void)
272	{	457	{
273	aio_req req;	458	aio_req req;
274	Newz (0, req, 1, aio_cb);	459	Newz (0, req, 1, aio_cb);
275	req->type = REQ_QUIT;	460	req->type = REQ_QUIT;
276		461
277	send_req (req);	462	req_send (req);
278	}	463	}
279		464
280	static void min_parallel (int nthreads)	465	static void min_parallel (int nthreads)
281	{	466	{
282	if (wanted < nthreads)	467	if (wanted < nthreads)
…		…
311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312	croak ("cannot set result pipe to nonblocking mode");	497	croak ("cannot set result pipe to nonblocking mode");
313		498
314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315	croak ("cannot set result pipe to nonblocking mode");	500	croak ("cannot set result pipe to nonblocking mode");
316	}
317
318	static void atfork_prepare (void)
319	{
320	pthread_mutex_lock (&reqlock);
321	pthread_mutex_lock (&reslock);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	aio_req prv;
333
334	started = 0;
335
336	while (reqs)
337	{
338	prv = reqs;
339	reqs = prv->next;
340	free_req (prv);
341	}
342
343	reqs = reqe = 0;
344
345	while (ress)
346	{
347	prv = ress;
348	ress = prv->next;
349	free_req (prv);
350	}
351
352	ress = rese = 0;
353
354	close (respipe [0]);
355	close (respipe [1]);
356	create_pipe ();
357
358	atfork_parent ();
359	}	501	}
360		502
361	/*****************************************************************************/	503	/*****************************************************************************/
362	/* work around various missing functions */	504	/* work around various missing functions */
363		505
…		…
368	/*	510	/*
369	* make our pread/pwrite safe against themselves, but not against	511	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,	512	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	513	* but that's your problem, not mine.
372	*/	514	*/
373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	515	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		516
375	static ssize_t	517	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	{	518	{
378	ssize_t res;	519	ssize_t res;
379	off_t ooffset;	520	off_t ooffset;
380		521
381	pthread_mutex_lock (&iolock);	522	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	523	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	524	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	525	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	526	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&iolock);	527	pthread_mutex_unlock (&preadwritelock);
387		528
388	return res;	529	return res;
389	}	530	}
390		531
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	533	{
394	ssize_t res;	534	ssize_t res;
395	off_t ooffset;	535	off_t ooffset;
396		536
397	pthread_mutex_lock (&iolock);	537	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	538	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	539	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	540	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	541	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&iolock);	542	pthread_mutex_unlock (&preadwritelock);
403		543
404	return res;	544	return res;
405	}	545	}
406	#endif	546	#endif
407		547
…		…
410	#endif	550	#endif
411		551
412	#if !HAVE_READAHEAD	552	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	553	# define readahead aio_readahead
414		554
		555	static ssize_t readahead (int fd, off_t offset, size_t count)
		556	{
415	static char readahead_buf[4096];	557	char readahead_buf[4096];
416		558
417	static ssize_t
418	readahead (int fd, off_t offset, size_t count)
419	{
420	while (count > 0)	559	while (count > 0)
421	{	560	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423		562
424	pread (fd, readahead_buf, len, offset);	563	pread (fd, readahead_buf, len, offset);
…		…
428		567
429	errno = 0;	568	errno = 0;
430	}	569	}
431	#endif	570	#endif
432		571
		572	#if !HAVE_READDIR_R
		573	# define readdir_r aio_readdir_r
		574
		575	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		576
		577	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		578	{
		579	struct dirent *e;
		580	int errorno;
		581
		582	pthread_mutex_lock (&readdirlock);
		583
		584	e = readdir (dirp);
		585	errorno = errno;
		586
		587	if (e)
		588	{
		589	*res = ent;
		590	strcpy (ent->d_name, e->d_name);
		591	}
		592	else
		593	*res = 0;
		594
		595	pthread_mutex_unlock (&readdirlock);
		596
		597	errno = errorno;
		598	return e ? 0 : -1;
		599	}
		600	#endif
		601
433	/* sendfile always needs emulation */	602	/* sendfile always needs emulation */
434	static ssize_t
435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436	{	604	{
437	ssize_t res;	605	ssize_t res;
438		606
439	if (!count)	607	if (!count)
440	return 0;	608	return 0;
441		609
		610	#if HAVE_SENDFILE
442	#if __linux	611	# if __linux
443	res = sendfile (ofd, ifd, &offset, count);	612	res = sendfile (ofd, ifd, &offset, count);
444		613
445	#elif __freebsd	614	# elif __freebsd
446	/*	615	/*
447	* Of course, the freebsd sendfile is a dire hack with no thoughts	616	* Of course, the freebsd sendfile is a dire hack with no thoughts
448	* wasted on making it similar to other i/o functions.	617	* wasted on making it similar to other I/O functions.
449	*/	618	*/
450	{	619	{
451	off_t sbytes;	620	off_t sbytes;
452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453		622
454	if (!res && errno == EAGAIN)	623	if (res < 0 && sbytes)
455	/* maybe on others, too, as usual, the manpage leaves you guessing */	624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
456	res = sbytes;	625	res = sbytes;
457	}	626	}
458		627
459	#elif __hpux	628	# elif __hpux
460	res = sendfile (ofd, ifd, offset, count, 0, 0);	629	res = sendfile (ofd, ifd, offset, count, 0, 0);
461		630
		631	# elif __solaris
		632	{
		633	struct sendfilevec vec;
		634	size_t sbytes;
		635
		636	vec.sfv_fd = ifd;
		637	vec.sfv_flag = 0;
		638	vec.sfv_off = offset;
		639	vec.sfv_len = count;
		640
		641	res = sendfilev (ofd, &vec, 1, &sbytes);
		642
		643	if (res < 0 && sbytes)
		644	res = sbytes;
		645	}
		646
		647	# endif
462	#else	648	#else
463	res = -1;	649	res = -1;
464	errno = ENOSYS;	650	errno = ENOSYS;
465	#endif	651	#endif
466		652
		653	if (res < 0
467	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))	654	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		655	#if __solaris
		656	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		657	#endif
		658	)
		659	)
468	{	660	{
469	/* emulate sendfile. this is a major pain in the ass */	661	/* emulate sendfile. this is a major pain in the ass */
470	char *buf = malloc (4096);	662	char buf[4096];
471	res = 0;	663	res = 0;
472		664
473	for (;;)	665	while (count)
474	{	666	{
475	ssize_t cnt;	667	ssize_t cnt;
476		668
477	cnt = pread (ifd, buf, 4096, offset);	669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
478		670
479	if (cnt <= 0)	671	if (cnt <= 0)
480	{	672	{
481	if (cnt && !res) res = -1;	673	if (cnt && !res) res = -1;
482	break;	674	break;
483	}	675	}
484		676
485	cnt = write (ofd, buf, cnt);	677	cnt = write (ofd, buf, cnt);
486		678
487	if (cnt <= 0)	679	if (cnt <= 0)
488	{	680	{
489	if (cnt && !res) res = -1;	681	if (cnt && !res) res = -1;
490	break;	682	break;
491	}	683	}
492		684
493	offset += cnt;	685	offset += cnt;
494	res += cnt;	686	res += cnt;
		687	count -= cnt;
495	}	688	}
496
497	{
498	int errorno = errno;
499	free (buf);
500	errno = errorno;
501	}
502	}	689	}
503		690
504	return res;	691	return res;
		692	}
		693
		694	/* read a full directory */
		695	static int scandir_ (const char path, void *namesp)
		696	{
		697	DIR *dirp = opendir (path);
		698	union
		699	{
		700	struct dirent d;
		701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		702	} u;
		703	struct dirent *entp;
		704	char name, names;
		705	int memlen = 4096;
		706	int memofs = 0;
		707	int res = 0;
		708	int errorno;
		709
		710	if (!dirp)
		711	return -1;
		712
		713	names = malloc (memlen);
		714
		715	for (;;)
		716	{
		717	errno = 0, readdir_r (dirp, &u.d, &entp);
		718
		719	if (!entp)
		720	break;
		721
		722	name = entp->d_name;
		723
		724	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		725	{
		726	int len = strlen (name) + 1;
		727
		728	res++;
		729
		730	while (memofs + len > memlen)
		731	{
		732	memlen *= 2;
		733	names = realloc (names, memlen);
		734	if (!names)
		735	break;
		736	}
		737
		738	memcpy (names + memofs, name, len);
		739	memofs += len;
		740	}
		741	}
		742
		743	errorno = errno;
		744	closedir (dirp);
		745
		746	if (errorno)
		747	{
		748	free (names);
		749	errno = errorno;
		750	res = -1;
		751	}
		752
		753	namesp = (void )names;
		754	return res;
505	}	755	}
506		756
507	/*****************************************************************************/	757	/*****************************************************************************/
508		758
509	static void *
510	aio_proc (void *thr_arg)	759	static void aio_proc (void thr_arg)
511	{	760	{
512	aio_req req;	761	aio_req req;
513	int type;	762	int type;
514		763
515	do	764	do
…		…
534		783
535	pthread_mutex_unlock (&reqlock);	784	pthread_mutex_unlock (&reqlock);
536		785
537	errno = 0; /* strictly unnecessary */	786	errno = 0; /* strictly unnecessary */
538		787
539	type = req->type;	788	if (!req->cancelled)
540		789	switch (type = req->type) /* remember type for QUIT check */
541	switch (type)
542	{	790	{
543	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
544	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
545		793
546	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
547	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
548		796
549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552		800
553	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	801	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554	case REQ_CLOSE: req->result = close (req->fd); break;	802	case REQ_CLOSE: req->result = close (req->fd); break;
555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558		808
559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560	case REQ_FSYNC: req->result = fsync (req->fd); break;	810	case REQ_FSYNC: req->result = fsync (req->fd); break;
		811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
561		812
		813	case REQ_SLEEP:
		814	{
		815	struct timeval tv;
		816
		817	tv.tv_sec = req->fd;
		818	tv.tv_usec = req->fd2;
		819
		820	req->result = select (0, 0, 0, 0, &tv);
		821	}
		822
562	case REQ_QUIT:	823	case REQ_QUIT:
563	break;	824	break;
564		825
565	default:	826	default:
566	req->result = ENOSYS;	827	req->result = ENOSYS;
567	break;	828	break;
568	}	829	}
569		830
570	req->errorno = errno;	831	req->errorno = errno;
571		832
572	pthread_mutex_lock (&reslock);	833	pthread_mutex_lock (&reslock);
573		834
574	req->next = 0;	835	req->next = 0;
575		836
		837	printf ("queue rese %p\n", rese);//D
576	if (rese)	838	if (rese)
577	{	839	{
578	rese->next = req;	840	rese->next = req;
579	rese = req;	841	rese = req;
580	}	842	}
…		…
591	while (type != REQ_QUIT);	853	while (type != REQ_QUIT);
592		854
593	return 0;	855	return 0;
594	}	856	}
595		857
		858	/*****************************************************************************/
		859
		860	static void atfork_prepare (void)
		861	{
		862	pthread_mutex_lock (&reqlock);
		863	pthread_mutex_lock (&reslock);
		864	#if !HAVE_PREADWRITE
		865	pthread_mutex_lock (&preadwritelock);
		866	#endif
		867	#if !HAVE_READDIR_R
		868	pthread_mutex_lock (&readdirlock);
		869	#endif
		870	}
		871
		872	static void atfork_parent (void)
		873	{
		874	#if !HAVE_READDIR_R
		875	pthread_mutex_unlock (&readdirlock);
		876	#endif
		877	#if !HAVE_PREADWRITE
		878	pthread_mutex_unlock (&preadwritelock);
		879	#endif
		880	pthread_mutex_unlock (&reslock);
		881	pthread_mutex_unlock (&reqlock);
		882	}
		883
		884	static void atfork_child (void)
		885	{
		886	aio_req prv;
		887
		888	started = 0;
		889
		890	while (reqs)
		891	{
		892	prv = reqs;
		893	reqs = prv->next;
		894	req_free (prv);
		895	}
		896
		897	reqs = reqe = 0;
		898
		899	while (ress)
		900	{
		901	prv = ress;
		902	ress = prv->next;
		903	req_free (prv);
		904	}
		905
		906	ress = rese = 0;
		907
		908	close (respipe [0]);
		909	close (respipe [1]);
		910	create_pipe ();
		911
		912	atfork_parent ();
		913	}
		914
596	#define dREQ \	915	#define dREQ \
597	aio_req req; \	916	aio_req req; \
598	\	917	\
599	if (SvOK (callback) && !SvROK (callback)) \	918	if (SvOK (callback) && !SvROK (callback)) \
600	croak ("clalback must be undef or of reference type"); \	919	croak ("callback must be undef or of reference type"); \
601	\	920	\
602	Newz (0, req, 1, aio_cb); \	921	Newz (0, req, 1, aio_cb); \
603	if (!req) \	922	if (!req) \
604	croak ("out of memory during aio_req allocation"); \	923	croak ("out of memory during aio_req allocation"); \
605	\	924	\
606	req->callback = newSVsv (callback);	925	req->callback = newSVsv (callback)
		926
		927	#define REQ_SEND \
		928	req_send (req); \
		929	\
		930	if (GIMME_V != G_VOID) \
		931	XPUSHs (req_sv (req, AIO_REQ_KLASS));
607		932
608	MODULE = IO::AIO PACKAGE = IO::AIO	933	MODULE = IO::AIO PACKAGE = IO::AIO
609		934
610	PROTOTYPES: ENABLE	935	PROTOTYPES: ENABLE
611		936
612	BOOT:	937	BOOT:
613	{	938	{
		939	HV *stash = gv_stashpv ("IO::AIO", 1);
		940	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		941	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		942	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		943
614	create_pipe ();	944	create_pipe ();
615	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	945	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616	}	946	}
617		947
618	void	948	void
619	min_parallel(nthreads)	949	min_parallel (nthreads)
620	int nthreads	950	int nthreads
621	PROTOTYPE: $	951	PROTOTYPE: $
622		952
623	void	953	void
624	max_parallel(nthreads)	954	max_parallel (nthreads)
625	int nthreads	955	int nthreads
626	PROTOTYPE: $	956	PROTOTYPE: $
627		957
628	int	958	int
629	max_outstanding(nreqs)	959	max_outstanding (nreqs)
630	int nreqs	960	int nreqs
631	PROTOTYPE: $	961	PROTOTYPE: $
632	CODE:	962	CODE:
633	RETVAL = max_outstanding;	963	RETVAL = max_outstanding;
634	max_outstanding = nreqs;	964	max_outstanding = nreqs;
635		965
636	void	966	void
637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	967	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638	SV * pathname	968	SV * pathname
639	int flags	969	int flags
640	int mode	970	int mode
641	SV * callback	971	SV * callback
642	PROTOTYPE: $$$;$	972	PROTOTYPE: $$$;$
643	CODE:	973	PPCODE:
644	{	974	{
645	dREQ;	975	dREQ;
646		976
647	req->type = REQ_OPEN;	977	req->type = REQ_OPEN;
648	req->data = newSVsv (pathname);	978	req->data = newSVsv (pathname);
649	req->dataptr = SvPVbyte_nolen (req->data);	979	req->dataptr = SvPVbyte_nolen (req->data);
650	req->fd = flags;	980	req->fd = flags;
651	req->mode = mode;	981	req->mode = mode;
652		982
653	send_req (req);	983	REQ_SEND;
654	}	984	}
655		985
656	void	986	void
657	aio_close(fh,callback=&PL_sv_undef)	987	aio_close (fh,callback=&PL_sv_undef)
658	SV * fh	988	SV * fh
659	SV * callback	989	SV * callback
660	PROTOTYPE: $;$	990	PROTOTYPE: $;$
661	ALIAS:	991	ALIAS:
662	aio_close = REQ_CLOSE	992	aio_close = REQ_CLOSE
663	aio_fsync = REQ_FSYNC	993	aio_fsync = REQ_FSYNC
664	aio_fdatasync = REQ_FDATASYNC	994	aio_fdatasync = REQ_FDATASYNC
665	CODE:	995	PPCODE:
666	{	996	{
667	dREQ;	997	dREQ;
668		998
669	req->type = ix;	999	req->type = ix;
670	req->fh = newSVsv (fh);	1000	req->fh = newSVsv (fh);
671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1001	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672		1002
673	send_req (req);	1003	REQ_SEND (req);
674	}	1004	}
675		1005
676	void	1006	void
677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1007	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678	SV * fh	1008	SV * fh
679	UV offset	1009	UV offset
680	UV length	1010	UV length
681	SV * data	1011	SV * data
682	UV dataoffset	1012	UV dataoffset
683	SV * callback	1013	SV * callback
684	ALIAS:	1014	ALIAS:
685	aio_read = REQ_READ	1015	aio_read = REQ_READ
686	aio_write = REQ_WRITE	1016	aio_write = REQ_WRITE
687	PROTOTYPE: $$$$$;$	1017	PROTOTYPE: $$$$$;$
688	CODE:	1018	PPCODE:
689	{	1019	{
690	aio_req req;	1020	aio_req req;
691	STRLEN svlen;	1021	STRLEN svlen;
692	char *svptr = SvPVbyte (data, svlen);	1022	char *svptr = SvPVbyte (data, svlen);
693		1023
…		…
731	{	1061	{
732	SvREADONLY_on (data);	1062	SvREADONLY_on (data);
733	req->data2ptr = (void *)data;	1063	req->data2ptr = (void *)data;
734	}	1064	}
735		1065
736	send_req (req);	1066	REQ_SEND;
737	}	1067	}
738	}	1068	}
739		1069
740	void	1070	void
741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1071	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742	SV * out_fh	1072	SV * out_fh
743	SV * in_fh	1073	SV * in_fh
744	UV in_offset	1074	UV in_offset
745	UV length	1075	UV length
746	SV * callback	1076	SV * callback
747	PROTOTYPE: $$$$;$	1077	PROTOTYPE: $$$$;$
748	CODE:	1078	PPCODE:
749	{	1079	{
750	dREQ;	1080	dREQ;
751		1081
752	req->type = REQ_SENDFILE;	1082	req->type = REQ_SENDFILE;
753	req->fh = newSVsv (out_fh);	1083	req->fh = newSVsv (out_fh);
…		…
755	req->fh2 = newSVsv (in_fh);	1085	req->fh2 = newSVsv (in_fh);
756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1086	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757	req->offset = in_offset;	1087	req->offset = in_offset;
758	req->length = length;	1088	req->length = length;
759		1089
760	send_req (req);	1090	REQ_SEND;
761	}	1091	}
762		1092
763	void	1093	void
764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1094	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765	SV * fh	1095	SV * fh
766	UV offset	1096	UV offset
767	IV length	1097	IV length
768	SV * callback	1098	SV * callback
769	PROTOTYPE: $$$;$	1099	PROTOTYPE: $$$;$
770	CODE:	1100	PPCODE:
771	{	1101	{
772	dREQ;	1102	dREQ;
773		1103
774	req->type = REQ_READAHEAD;	1104	req->type = REQ_READAHEAD;
775	req->fh = newSVsv (fh);	1105	req->fh = newSVsv (fh);
776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1106	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777	req->offset = offset;	1107	req->offset = offset;
778	req->length = length;	1108	req->length = length;
779		1109
780	send_req (req);	1110	REQ_SEND;
781	}	1111	}
782		1112
783	void	1113	void
784	aio_stat(fh_or_path,callback=&PL_sv_undef)	1114	aio_stat (fh_or_path,callback=&PL_sv_undef)
785	SV * fh_or_path	1115	SV * fh_or_path
786	SV * callback	1116	SV * callback
787	ALIAS:	1117	ALIAS:
788	aio_stat = REQ_STAT	1118	aio_stat = REQ_STAT
789	aio_lstat = REQ_LSTAT	1119	aio_lstat = REQ_LSTAT
790	CODE:	1120	PPCODE:
791	{	1121	{
792	dREQ;	1122	dREQ;
793		1123
794	New (0, req->statdata, 1, Stat_t);	1124	New (0, req->statdata, 1, Stat_t);
795	if (!req->statdata)	1125	if (!req->statdata)
796	{	1126	{
797	free_req (req);	1127	req_free (req);
798	croak ("out of memory during aio_req->statdata allocation");	1128	croak ("out of memory during aio_req->statdata allocation");
799	}	1129	}
800		1130
801	if (SvPOK (fh_or_path))	1131	if (SvPOK (fh_or_path))
802	{	1132	{
…		…
809	req->type = REQ_FSTAT;	1139	req->type = REQ_FSTAT;
810	req->fh = newSVsv (fh_or_path);	1140	req->fh = newSVsv (fh_or_path);
811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1141	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812	}	1142	}
813		1143
814	send_req (req);	1144	REQ_SEND;
815	}	1145	}
816		1146
817	void	1147	void
818	aio_unlink(pathname,callback=&PL_sv_undef)	1148	aio_unlink (pathname,callback=&PL_sv_undef)
819	SV * pathname	1149	SV * pathname
820	SV * callback	1150	SV * callback
821	ALIAS:	1151	ALIAS:
822	aio_unlink = REQ_UNLINK	1152	aio_unlink = REQ_UNLINK
823	aio_rmdir = REQ_RMDIR	1153	aio_rmdir = REQ_RMDIR
		1154	aio_readdir = REQ_READDIR
824	CODE:	1155	PPCODE:
825	{	1156	{
826	dREQ;	1157	dREQ;
827		1158
828	req->type = ix;	1159	req->type = ix;
829	req->data = newSVsv (pathname);	1160	req->data = newSVsv (pathname);
830	req->dataptr = SvPVbyte_nolen (req->data);	1161	req->dataptr = SvPVbyte_nolen (req->data);
831		1162
832	send_req (req);	1163	REQ_SEND;
833	}	1164	}
834		1165
835	void	1166	void
836	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1167	aio_link (oldpath,newpath,callback=&PL_sv_undef)
837	SV * oldpath	1168	SV * oldpath
838	SV * newpath	1169	SV * newpath
839	SV * callback	1170	SV * callback
		1171	ALIAS:
		1172	aio_link = REQ_LINK
		1173	aio_symlink = REQ_SYMLINK
		1174	aio_rename = REQ_RENAME
840	CODE:	1175	PPCODE:
841	{	1176	{
842	dREQ;	1177	dREQ;
843		1178
844	req->type = REQ_SYMLINK;	1179	req->type = ix;
845	req->fh = newSVsv (oldpath);	1180	req->fh = newSVsv (oldpath);
846	req->data2ptr = SvPVbyte_nolen (req->fh);	1181	req->data2ptr = SvPVbyte_nolen (req->fh);
847	req->data = newSVsv (newpath);	1182	req->data = newSVsv (newpath);
848	req->dataptr = SvPVbyte_nolen (req->data);	1183	req->dataptr = SvPVbyte_nolen (req->data);
849		1184
850	send_req (req);	1185	REQ_SEND;
851	}	1186	}
852		1187
853	void	1188	void
		1189	aio_sleep (delay,callback=&PL_sv_undef)
		1190	double delay
		1191	SV * callback
		1192	PPCODE:
		1193	{
		1194	dREQ;
		1195
		1196	req->type = REQ_SLEEP;
		1197	req->fd = delay < 0. ? 0 : delay;
		1198	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1199
		1200	REQ_SEND;
		1201	}
		1202
		1203	void
		1204	aio_group (callback=&PL_sv_undef)
		1205	SV * callback
		1206	PROTOTYPE: ;$
		1207	PPCODE:
		1208	{
		1209	dREQ;
		1210	req->type = REQ_GROUP;
		1211	req_send (req);
		1212	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1213	}
		1214
		1215	void
854	flush()	1216	flush ()
855	PROTOTYPE:	1217	PROTOTYPE:
856	CODE:	1218	CODE:
857	while (nreqs)	1219	while (nreqs)
858	{	1220	{
859	poll_wait ();	1221	poll_wait ();
…		…
899	CODE:	1261	CODE:
900	RETVAL = nreqs;	1262	RETVAL = nreqs;
901	OUTPUT:	1263	OUTPUT:
902	RETVAL	1264	RETVAL
903		1265
		1266	PROTOTYPES: DISABLE
		1267
		1268	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1269
		1270	void
		1271	cancel (aio_req_ornot req)
		1272	PROTOTYPE:
		1273	CODE:
		1274	req_cancel (req);
		1275
		1276	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1277
		1278	void
		1279	add (aio_req grp, ...)
		1280	PPCODE:
		1281	{
		1282	int i;
		1283
		1284	if (grp->fd == 2)
		1285	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1286
		1287	for (i = 1; i < items; ++i )
		1288	{
		1289	if (GIMME_V != G_VOID)
		1290	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1291
		1292	aio_req req = SvAIO_REQ (ST (i));
		1293
		1294	if (req)
		1295	{
		1296	++grp->length;
		1297	req->grp = grp;
		1298
		1299	req->grp_prev = 0;
		1300	req->grp_next = grp->grp_first;
		1301
		1302	if (grp->grp_first)
		1303	grp->grp_first->grp_prev = req;
		1304
		1305	grp->grp_first = req;
		1306	}
		1307	}
		1308	}
		1309
		1310	void
		1311	result (aio_req grp, ...)
		1312	CODE:
		1313	{
		1314	int i;
		1315	AV *av = newAV ();
		1316
		1317	for (i = 1; i < items; ++i )
		1318	av_push (av, newSVsv (ST (i)));
		1319
		1320	SvREFCNT_dec (grp->data);
		1321	grp->data = (SV *)av;
		1322	}
		1323
		1324	void
		1325	lock (aio_req grp)
		1326	CODE:
		1327	++grp->length;
		1328
		1329	void
		1330	unlock (aio_req grp)
		1331	CODE:
		1332	aio_grp_dec (grp);
		1333
		1334	void
		1335	feeder_limit (aio_req grp, int limit)
		1336	CODE:
		1337	grp->fd2 = limit;
		1338	aio_grp_feed (grp);
		1339
		1340	void
		1341	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
		1342	CODE:
		1343	{
		1344	SvREFCNT_dec (grp->fh2);
		1345	grp->fh2 = newSVsv (callback);
		1346
		1347	if (grp->fd2 <= 0)
		1348	grp->fd2 = 2;
		1349
		1350	aio_grp_feed (grp);
		1351	}
		1352

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs. Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC