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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC

…		…
		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
12	#include <stddef.h>	17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
13	#include <sys/types.h>	21	#include <sys/types.h>
14	#include <sys/stat.h>	22	#include <sys/stat.h>
15	#include <limits.h>	23	#include <limits.h>
16	#include <unistd.h>	24	#include <unistd.h>
17	#include <fcntl.h>	25	#include <fcntl.h>
…		…
38	# define NAME_MAX 4096	46	# define NAME_MAX 4096
39	#endif	47	#endif
40		48
41	#if __ia64	49	#if __ia64
42	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	53	#else
44	# define STACKSIZE 8192	54	# define STACKSIZE 16384
45	#endif	55	#endif
		56
		57	/* buffer size for various temporary buffers */
		58	#define AIO_BUFSIZE 65536
		59
		60	#define dBUF \
		61	char *aio_buf = malloc (AIO_BUFSIZE); \
		62	if (!aio_buf) \
		63	return -1;
		64
		65	#define fBUF free (aio_buf)
46		66
47	enum {	67	enum {
48	REQ_QUIT,	68	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
51	REQ_SENDFILE,	71	REQ_SENDFILE,
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	75	REQ_READDIR,
56	REQ_SYMLINK,	76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
57	};	79	};
58		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
59	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
60	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
61		87
62	int type;	88	SV data, callback;
63		89	SV fh, fh2;
64	/* should receive a cleanup, with unions */	90	void dataptr, data2ptr;
65	int fd, fd2;	91	Stat_t *statdata;
66	off_t offset;	92	off_t offset;
67	size_t length;	93	size_t length;
68	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
69	mode_t mode; /* open */	100	mode_t mode; /* open */
70	int errorno;
71	SV data, callback;
72	SV fh, fh2;
73	void dataptr, data2ptr;
74	STRLEN dataoffset;
75		101
76	Stat_t *statdata;	102	unsigned char flags;
		103	unsigned char pri;
		104
		105	SV self; / the perl counterpart of this request, if any */
		106	struct aio_cb grp, grp_prev, grp_next, grp_first;
77	} aio_cb;	107	} aio_cb;
78		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
79	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		115
		116	enum {
		117	PRI_MIN = -4,
		118	PRI_MAX = 4,
		119
		120	DEFAULT_PRI = 0,
		121	PRI_BIAS = -PRI_MIN,
		122	};
		123
		124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
80		125
81	static int started, wanted;	126	static int started, wanted;
82	static volatile int nreqs;	127	static volatile int nreqs;
83	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
84	static int respipe [2];	129	static int respipe [2];
85		130
		131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		133	#else
		134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		135	#endif
		136
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		140
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
91	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
92		143
		144	static void req_invoke (aio_req req);
		145	static void req_free (aio_req req);
		146
		147	/* must be called at most once */
		148	static SV req_sv (aio_req req, const char klass)
		149	{
		150	if (!req->self)
		151	{
		152	req->self = (SV *)newHV ();
		153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
		155
		156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		157	}
		158
		159	static aio_req SvAIO_REQ (SV *sv)
		160	{
		161	MAGIC *mg;
		162
		163	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		164	croak ("object of class " AIO_REQ_KLASS " expected");
		165
		166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		167
		168	return mg ? (aio_req)mg->mg_ptr : 0;
		169	}
		170
		171	static void aio_grp_feed (aio_req grp)
		172	{
		173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		174	{
		175	int old_len = grp->length;
		176
		177	if (grp->fh2 && SvOK (grp->fh2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->fh2, G_VOID \| G_EVAL);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191
		192	/* stop if no progress has been made */
		193	if (old_len == grp->length)
		194	{
		195	SvREFCNT_dec (grp->fh2);
		196	grp->fh2 = 0;
		197	break;
		198	}
		199	}
		200	}
		201
		202	static void aio_grp_dec (aio_req grp)
		203	{
		204	--grp->length;
		205
		206	/* call feeder, if applicable */
		207	aio_grp_feed (grp);
		208
		209	/* finish, if done */
		210	if (!grp->length && grp->fd)
		211	{
		212	req_invoke (grp);
		213	req_free (grp);
		214	}
		215	}
		216
		217	static void poll_wait ()
		218	{
		219	fd_set rfd;
		220
		221	while (nreqs)
		222	{
		223	aio_req req;
		224	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		225	pthread_mutex_lock (&reslock);
		226	#endif
		227	req = ress;
		228	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		229	pthread_mutex_unlock (&reslock);
		230	#endif
		231
		232	if (req)
		233	return;
		234
		235	FD_ZERO(&rfd);
		236	FD_SET(respipe [0], &rfd);
		237
		238	select (respipe [0] + 1, &rfd, 0, 0, 0);
		239	}
		240	}
		241
		242	static void req_invoke (aio_req req)
		243	{
		244	dSP;
		245	int errorno = errno;
		246
		247	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		248	return;
		249
		250	errno = req->errorno;
		251
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
		258	{
		259	case REQ_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
		262
		263	if (req->result >= 0)
		264	{
		265	char *buf = req->data2ptr;
		266	AV *av = newAV ();
		267
		268	while (req->result)
		269	{
		270	SV *sv = newSVpv (buf, 0);
		271
		272	av_push (av, sv);
		273	buf += SvCUR (sv) + 1;
		274	req->result--;
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281	}
		282	break;
		283
		284	case REQ_OPEN:
		285	{
		286	/* convert fd to fh */
		287	SV *fh;
		288
		289	PUSHs (sv_2mortal (newSViv (req->result)));
		290	PUTBACK;
		291	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		292	SPAGAIN;
		293
		294	fh = SvREFCNT_inc (POPs);
		295
		296	PUSHMARK (SP);
		297	XPUSHs (sv_2mortal (fh));
		298	}
		299	break;
		300
		301	case REQ_GROUP:
		302	req->fd = 2; /* mark group as finished */
		303
		304	if (req->data)
		305	{
		306	int i;
		307	AV av = (AV )req->data;
		308
		309	EXTEND (SP, AvFILL (av) + 1);
		310	for (i = 0; i <= AvFILL (av); ++i)
		311	PUSHs (*av_fetch (av, i, 0));
		312	}
		313	break;
		314
		315	case REQ_NOP:
		316	case REQ_SLEEP:
		317	break;
		318
		319	default:
		320	PUSHs (sv_2mortal (newSViv (req->result)));
		321	break;
		322	}
		323
		324
		325	PUTBACK;
		326	call_sv (req->callback, G_VOID \| G_EVAL);
		327	SPAGAIN;
		328
		329	FREETMPS;
		330	LEAVE;
		331
		332	errno = errorno;
		333
		334	if (SvTRUE (ERRSV))
		335	{
		336	req_free (req);
		337	croak (0);
		338	}
		339	}
		340
93	static void free_req (aio_req req)	341	static void req_free (aio_req req)
94	{	342	{
95	if (req->data)	343	if (req->grp)
		344	{
		345	aio_req grp = req->grp;
		346
		347	/* unlink request */
		348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		350
		351	if (grp->grp_first == req)
		352	grp->grp_first = req->grp_next;
		353
		354	aio_grp_dec (grp);
		355	}
		356
		357	if (req->self)
		358	{
		359	sv_unmagic (req->self, PERL_MAGIC_ext);
		360	SvREFCNT_dec (req->self);
		361	}
		362
96	SvREFCNT_dec (req->data);	363	SvREFCNT_dec (req->data);
97
98	if (req->fh)
99	SvREFCNT_dec (req->fh);	364	SvREFCNT_dec (req->fh);
100
101	if (req->fh2)
102	SvREFCNT_dec (req->fh2);	365	SvREFCNT_dec (req->fh2);
103
104	if (req->statdata)
105	Safefree (req->statdata);
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);	366	SvREFCNT_dec (req->callback);
		367	Safefree (req->statdata);
109		368
110	if (req->type == REQ_READDIR && req->result >= 0)	369	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);	370	free (req->data2ptr);
112		371
113	Safefree (req);	372	Safefree (req);
114	}	373	}
115		374
116	static void	375	static void req_cancel (aio_req req)
117	poll_wait ()
118	{	376	{
119	if (nreqs && !ress)	377	req->flags \|= FLAG_CANCELLED;
120	{
121	fd_set rfd;
122	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);
124		378
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	379	if (req->type == REQ_GROUP)
126	}	380	{
127	}	381	aio_req sub;
128		382
129	static int	383	for (sub = req->grp_first; sub; sub = sub->grp_next)
130	poll_cb ()	384	req_cancel (sub);
		385	}
		386	}
		387
		388	static int poll_cb ()
131	{	389	{
132	dSP;	390	dSP;
133	int count = 0;	391	int count = 0;
134	int do_croak = 0;	392	int do_croak = 0;
135	aio_req req;	393	aio_req req;
…		…
157	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
158		416
159	if (!req)	417	if (!req)
160	break;	418	break;
161		419
162	nreqs--;	420	--nreqs;
163		421
164	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
165	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
166	else	429	else
167	{	430	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173		433
174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;	440	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
182	}	442	}
183		443
184	ENTER;	444	req_invoke (req);
185	PUSHMARK (SP);
186		445
187	if (req->type == REQ_READDIR)
188	{
189	SV *rv = &PL_sv_undef;
190
191	if (req->result >= 0)
192	{
193	char *buf = req->data2ptr;
194	AV *av = newAV ();
195
196	while (req->result)
197	{
198	SV *sv = newSVpv (buf, 0);
199
200	av_push (av, sv);
201	buf += SvCUR (sv) + 1;
202	req->result--;
203	}
204
205	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}
207
208	XPUSHs (rv);
209	}
210	else
211	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)
215	{
216	/* convert fd to fh */
217	SV *fh;
218
219	PUTBACK;
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}
228	}
229
230	if (SvOK (req->callback))
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID \| G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);
240	}
241	}
242
243	LEAVE;
244
245	errno = errorno;
246	count++;	446	count++;
247	}	447	}
248		448
249	free_req (req);	449	req_free (req);
250	}	450	}
251		451
252	return count;	452	return count;
253	}	453	}
254		454
255	static void aio_proc(void arg);	455	static void aio_proc(void arg);
256		456
257	static void
258	start_thread (void)	457	static void start_thread (void)
259	{	458	{
260	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
261	pthread_t tid;	460	pthread_t tid;
262	pthread_attr_t attr;	461	pthread_attr_t attr;
263		462
…		…
272	started++;	471	started++;
273		472
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
275	}	474	}
276		475
277	static void	476	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	477	{
280	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
281	start_thread ();	479	start_thread ();
282		480
283	nreqs++;	481	++nreqs;
284		482
285	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
286		484
287	req->next = 0;	485	req->next = 0;
288		486
…		…
307		505
308	poll_wait ();	506	poll_wait ();
309	}	507	}
310	}	508	}
311		509
312	static void	510	static void end_thread (void)
313	end_thread (void)
314	{	511	{
315	aio_req req;	512	aio_req req;
316	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
317	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
318		515
319	send_req (req);	516	req_send (req);
320	}	517	}
321		518
322	static void min_parallel (int nthreads)	519	static void min_parallel (int nthreads)
323	{	520	{
324	if (wanted < nthreads)	521	if (wanted < nthreads)
…		…
369	* normal read/write by using a mutex. slows down execution a lot,	566	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.	567	* but that's your problem, not mine.
371	*/	568	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		570
374	static ssize_t	571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
375	pread (int fd, void *buf, size_t count, off_t offset)
376	{	572	{
377	ssize_t res;	573	ssize_t res;
378	off_t ooffset;	574	off_t ooffset;
379		575
380	pthread_mutex_lock (&preadwritelock);	576	pthread_mutex_lock (&preadwritelock);
…		…
385	pthread_mutex_unlock (&preadwritelock);	581	pthread_mutex_unlock (&preadwritelock);
386		582
387	return res;	583	return res;
388	}	584	}
389		585
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)	586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392	{	587	{
393	ssize_t res;	588	ssize_t res;
394	off_t ooffset;	589	off_t ooffset;
395		590
396	pthread_mutex_lock (&preadwritelock);	591	pthread_mutex_lock (&preadwritelock);
…		…
409	#endif	604	#endif
410		605
411	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	607	# define readahead aio_readahead
413		608
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
416	{	610	{
417	char readahead_buf[4096];	611	dBUF;
418		612
419	while (count > 0)	613	while (count > 0)
420	{	614	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		616
423	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
424	offset += len;	618	offset += len;
425	count -= len;	619	count -= len;
426	}	620	}
427		621
		622	fBUF;
		623
428	errno = 0;	624	errno = 0;
429	}	625	}
430	#endif	626	#endif
431		627
432	#if !HAVE_READDIR_R	628	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	629	# define readdir_r aio_readdir_r
434		630
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		632
437	static int
438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	633	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
439	{	634	{
440	struct dirent *e;	635	struct dirent *e;
441	int errorno;	636	int errorno;
442		637
443	pthread_mutex_lock (&readdirlock);	638	pthread_mutex_lock (&readdirlock);
…		…
459	return e ? 0 : -1;	654	return e ? 0 : -1;
460	}	655	}
461	#endif	656	#endif
462		657
463	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
466	{	660	{
467	ssize_t res;	661	ssize_t res;
468		662
469	if (!count)	663	if (!count)
470	return 0;	664	return 0;
…		…
519	#endif	713	#endif
520	)	714	)
521	)	715	)
522	{	716	{
523	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	718	dBUF;
		719
525	res = 0;	720	res = 0;
526		721
527	while (count)	722	while (count)
528	{	723	{
529	ssize_t cnt;	724	ssize_t cnt;
530		725
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		727
533	if (cnt <= 0)	728	if (cnt <= 0)
534	{	729	{
535	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
536	break;	731	break;
537	}	732	}
538		733
539	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
540		735
541	if (cnt <= 0)	736	if (cnt <= 0)
542	{	737	{
543	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
544	break;	739	break;
…		…
546		741
547	offset += cnt;	742	offset += cnt;
548	res += cnt;	743	res += cnt;
549	count -= cnt;	744	count -= cnt;
550	}	745	}
		746
		747	fBUF;
551	}	748	}
552		749
553	return res;	750	return res;
554	}	751	}
555		752
556	/* read a full directory */	753	/* read a full directory */
557	static int
558	scandir_ (const char path, void *namesp)	754	static int scandir_ (const char path, void *namesp)
559	{	755	{
560	DIR *dirp = opendir (path);	756	DIR *dirp;
561	union	757	union
562	{	758	{
563	struct dirent d;	759	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	761	} *u;
566	struct dirent *entp;	762	struct dirent *entp;
567	char name, names;	763	char name, names;
568	int memlen = 4096;	764	int memlen = 4096;
569	int memofs = 0;	765	int memofs = 0;
570	int res = 0;	766	int res = 0;
571	int errorno;	767	int errorno;
572		768
		769	dirp = opendir (path);
573	if (!dirp)	770	if (!dirp)
574	return -1;	771	return -1;
575		772
		773	u = malloc (sizeof (*u));
576	names = malloc (memlen);	774	names = malloc (memlen);
577		775
		776	if (u && names)
578	for (;;)	777	for (;;)
579	{	778	{
		779	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	780	readdir_r (dirp, &u->d, &entp);
581		781
582	if (!entp)	782	if (!entp)
583	break;	783	break;
584		784
585	name = entp->d_name;	785	name = entp->d_name;
586		786
587	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	787	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
588	{	788	{
589	int len = strlen (name) + 1;	789	int len = strlen (name) + 1;
590		790
591	res++;	791	res++;
592		792
593	while (memofs + len > memlen)	793	while (memofs + len > memlen)
594	{	794	{
595	memlen *= 2;	795	memlen *= 2;
596	names = realloc (names, memlen);	796	names = realloc (names, memlen);
597	if (!names)	797	if (!names)
598	break;	798	break;
599	}	799	}
600		800
601	memcpy (names + memofs, name, len);	801	memcpy (names + memofs, name, len);
602	memofs += len;	802	memofs += len;
603	}	803	}
604	}	804	}
605		805
606	errorno = errno;	806	errorno = errno;
		807	free (u);
607	closedir (dirp);	808	closedir (dirp);
608		809
609	if (errorno)	810	if (errorno)
610	{	811	{
611	free (names);	812	free (names);
…		…
617	return res;	818	return res;
618	}	819	}
619		820
620	/*****************************************************************************/	821	/*****************************************************************************/
621		822
622	static void *
623	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
624	{	824	{
625	aio_req req;	825	aio_req req;
626	int type;	826	int type;
627		827
628	do	828	do
…		…
646	}	846	}
647		847
648	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
649		849
650	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
651		852
652	type = req->type;	853	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	854	switch (type)
655	{	855	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658		858
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
661		861
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		865
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;	867	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
671		873
672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
673	case REQ_FSYNC: req->result = fsync (req->fd); break;	875	case REQ_FSYNC: req->result = fsync (req->fd); break;
674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
675		877
		878	case REQ_SLEEP:
		879	{
		880	struct timeval tv;
		881
		882	tv.tv_sec = req->fd;
		883	tv.tv_usec = req->fd2;
		884
		885	req->result = select (0, 0, 0, 0, &tv);
		886	}
		887
		888	case REQ_GROUP:
		889	case REQ_NOP:
676	case REQ_QUIT:	890	case REQ_QUIT:
677	break;	891	break;
678		892
679	default:	893	default:
680	req->result = ENOSYS;	894	req->result = ENOSYS;
681	break;	895	break;
682	}	896	}
683		897
684	req->errorno = errno;	898	req->errorno = errno;
685		899
686	pthread_mutex_lock (&reslock);	900	pthread_mutex_lock (&reslock);
687		901
…		…
741		955
742	while (reqs)	956	while (reqs)
743	{	957	{
744	prv = reqs;	958	prv = reqs;
745	reqs = prv->next;	959	reqs = prv->next;
746	free_req (prv);	960	req_free (prv);
747	}	961	}
748		962
749	reqs = reqe = 0;	963	reqs = reqe = 0;
750		964
751	while (ress)	965	while (ress)
752	{	966	{
753	prv = ress;	967	prv = ress;
754	ress = prv->next;	968	ress = prv->next;
755	free_req (prv);	969	req_free (prv);
756	}	970	}
757		971
758	ress = rese = 0;	972	ress = rese = 0;
759		973
760	close (respipe [0]);	974	close (respipe [0]);
…		…
764	atfork_parent ();	978	atfork_parent ();
765	}	979	}
766		980
767	#define dREQ \	981	#define dREQ \
768	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
769	\	985	\
770	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
771	croak ("clalback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
772	\	988	\
773	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
774	if (!req) \	990	if (!req) \
775	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
776	\	992	\
777	req->callback = newSVsv (callback);	993	req->callback = newSVsv (callback); \
		994	req->pri = req_pri
		995
		996	#define REQ_SEND \
		997	req_send (req); \
		998	\
		999	if (GIMME_V != G_VOID) \
		1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));
778		1001
779	MODULE = IO::AIO PACKAGE = IO::AIO	1002	MODULE = IO::AIO PACKAGE = IO::AIO
780		1003
781	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
782		1005
783	BOOT:	1006	BOOT:
784	{	1007	{
		1008	HV *stash = gv_stashpv ("IO::AIO", 1);
		1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1012
785	create_pipe ();	1013	create_pipe ();
786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
787	}	1015	}
788		1016
789	void	1017	void
790	min_parallel(nthreads)	1018	min_parallel (nthreads)
791	int nthreads	1019	int nthreads
792	PROTOTYPE: $	1020	PROTOTYPE: $
793		1021
794	void	1022	void
795	max_parallel(nthreads)	1023	max_parallel (nthreads)
796	int nthreads	1024	int nthreads
797	PROTOTYPE: $	1025	PROTOTYPE: $
798		1026
799	int	1027	int
800	max_outstanding(nreqs)	1028	max_outstanding (nreqs)
801	int nreqs	1029	int nreqs
802	PROTOTYPE: $	1030	PROTOTYPE: $
803	CODE:	1031	CODE:
804	RETVAL = max_outstanding;	1032	RETVAL = max_outstanding;
805	max_outstanding = nreqs;	1033	max_outstanding = nreqs;
806		1034
807	void	1035	void
808	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
809	SV * pathname	1037	SV * pathname
810	int flags	1038	int flags
811	int mode	1039	int mode
812	SV * callback	1040	SV * callback
813	PROTOTYPE: $$$;$	1041	PROTOTYPE: $$$;$
814	CODE:	1042	PPCODE:
815	{	1043	{
816	dREQ;	1044	dREQ;
817		1045
818	req->type = REQ_OPEN;	1046	req->type = REQ_OPEN;
819	req->data = newSVsv (pathname);	1047	req->data = newSVsv (pathname);
820	req->dataptr = SvPVbyte_nolen (req->data);	1048	req->dataptr = SvPVbyte_nolen (req->data);
821	req->fd = flags;	1049	req->fd = flags;
822	req->mode = mode;	1050	req->mode = mode;
823		1051
824	send_req (req);	1052	REQ_SEND;
825	}	1053	}
826		1054
827	void	1055	void
828	aio_close(fh,callback=&PL_sv_undef)	1056	aio_close (fh,callback=&PL_sv_undef)
829	SV * fh	1057	SV * fh
830	SV * callback	1058	SV * callback
831	PROTOTYPE: $;$	1059	PROTOTYPE: $;$
832	ALIAS:	1060	ALIAS:
833	aio_close = REQ_CLOSE	1061	aio_close = REQ_CLOSE
834	aio_fsync = REQ_FSYNC	1062	aio_fsync = REQ_FSYNC
835	aio_fdatasync = REQ_FDATASYNC	1063	aio_fdatasync = REQ_FDATASYNC
836	CODE:	1064	PPCODE:
837	{	1065	{
838	dREQ;	1066	dREQ;
839		1067
840	req->type = ix;	1068	req->type = ix;
841	req->fh = newSVsv (fh);	1069	req->fh = newSVsv (fh);
842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
843		1071
844	send_req (req);	1072	REQ_SEND (req);
845	}	1073	}
846		1074
847	void	1075	void
848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
849	SV * fh	1077	SV * fh
850	UV offset	1078	UV offset
851	UV length	1079	UV length
852	SV * data	1080	SV * data
853	UV dataoffset	1081	UV dataoffset
854	SV * callback	1082	SV * callback
855	ALIAS:	1083	ALIAS:
856	aio_read = REQ_READ	1084	aio_read = REQ_READ
857	aio_write = REQ_WRITE	1085	aio_write = REQ_WRITE
858	PROTOTYPE: $$$$$;$	1086	PROTOTYPE: $$$$$;$
859	CODE:	1087	PPCODE:
860	{	1088	{
861	aio_req req;	1089	aio_req req;
862	STRLEN svlen;	1090	STRLEN svlen;
863	char *svptr = SvPVbyte (data, svlen);	1091	char *svptr = SvPVbyte (data, svlen);
864		1092
…		…
902	{	1130	{
903	SvREADONLY_on (data);	1131	SvREADONLY_on (data);
904	req->data2ptr = (void *)data;	1132	req->data2ptr = (void *)data;
905	}	1133	}
906		1134
907	send_req (req);	1135	REQ_SEND;
908	}	1136	}
909	}	1137	}
910		1138
911	void	1139	void
912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
913	SV * out_fh	1141	SV * out_fh
914	SV * in_fh	1142	SV * in_fh
915	UV in_offset	1143	UV in_offset
916	UV length	1144	UV length
917	SV * callback	1145	SV * callback
918	PROTOTYPE: $$$$;$	1146	PROTOTYPE: $$$$;$
919	CODE:	1147	PPCODE:
920	{	1148	{
921	dREQ;	1149	dREQ;
922		1150
923	req->type = REQ_SENDFILE;	1151	req->type = REQ_SENDFILE;
924	req->fh = newSVsv (out_fh);	1152	req->fh = newSVsv (out_fh);
…		…
926	req->fh2 = newSVsv (in_fh);	1154	req->fh2 = newSVsv (in_fh);
927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
928	req->offset = in_offset;	1156	req->offset = in_offset;
929	req->length = length;	1157	req->length = length;
930		1158
931	send_req (req);	1159	REQ_SEND;
932	}	1160	}
933		1161
934	void	1162	void
935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
936	SV * fh	1164	SV * fh
937	UV offset	1165	UV offset
938	IV length	1166	IV length
939	SV * callback	1167	SV * callback
940	PROTOTYPE: $$$;$	1168	PROTOTYPE: $$$;$
941	CODE:	1169	PPCODE:
942	{	1170	{
943	dREQ;	1171	dREQ;
944		1172
945	req->type = REQ_READAHEAD;	1173	req->type = REQ_READAHEAD;
946	req->fh = newSVsv (fh);	1174	req->fh = newSVsv (fh);
947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
948	req->offset = offset;	1176	req->offset = offset;
949	req->length = length;	1177	req->length = length;
950		1178
951	send_req (req);	1179	REQ_SEND;
952	}	1180	}
953		1181
954	void	1182	void
955	aio_stat(fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (fh_or_path,callback=&PL_sv_undef)
956	SV * fh_or_path	1184	SV * fh_or_path
957	SV * callback	1185	SV * callback
958	ALIAS:	1186	ALIAS:
959	aio_stat = REQ_STAT	1187	aio_stat = REQ_STAT
960	aio_lstat = REQ_LSTAT	1188	aio_lstat = REQ_LSTAT
961	CODE:	1189	PPCODE:
962	{	1190	{
963	dREQ;	1191	dREQ;
964		1192
965	New (0, req->statdata, 1, Stat_t);	1193	New (0, req->statdata, 1, Stat_t);
966	if (!req->statdata)	1194	if (!req->statdata)
967	{	1195	{
968	free_req (req);	1196	req_free (req);
969	croak ("out of memory during aio_req->statdata allocation");	1197	croak ("out of memory during aio_req->statdata allocation");
970	}	1198	}
971		1199
972	if (SvPOK (fh_or_path))	1200	if (SvPOK (fh_or_path))
973	{	1201	{
…		…
980	req->type = REQ_FSTAT;	1208	req->type = REQ_FSTAT;
981	req->fh = newSVsv (fh_or_path);	1209	req->fh = newSVsv (fh_or_path);
982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
983	}	1211	}
984		1212
985	send_req (req);	1213	REQ_SEND;
986	}	1214	}
987		1215
988	void	1216	void
989	aio_unlink(pathname,callback=&PL_sv_undef)	1217	aio_unlink (pathname,callback=&PL_sv_undef)
990	SV * pathname	1218	SV * pathname
991	SV * callback	1219	SV * callback
992	ALIAS:	1220	ALIAS:
993	aio_unlink = REQ_UNLINK	1221	aio_unlink = REQ_UNLINK
994	aio_rmdir = REQ_RMDIR	1222	aio_rmdir = REQ_RMDIR
		1223	aio_readdir = REQ_READDIR
995	CODE:	1224	PPCODE:
996	{	1225	{
997	dREQ;	1226	dREQ;
998		1227
999	req->type = ix;	1228	req->type = ix;
1000	req->data = newSVsv (pathname);	1229	req->data = newSVsv (pathname);
1001	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
1002		1231
1003	send_req (req);	1232	REQ_SEND;
1004	}	1233	}
1005		1234
1006	void	1235	void
1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1008	SV * oldpath	1237	SV * oldpath
1009	SV * newpath	1238	SV * newpath
1010	SV * callback	1239	SV * callback
		1240	ALIAS:
		1241	aio_link = REQ_LINK
		1242	aio_symlink = REQ_SYMLINK
		1243	aio_rename = REQ_RENAME
1011	CODE:	1244	PPCODE:
1012	{	1245	{
1013	dREQ;	1246	dREQ;
1014		1247
1015	req->type = REQ_SYMLINK;	1248	req->type = ix;
1016	req->fh = newSVsv (oldpath);	1249	req->fh = newSVsv (oldpath);
1017	req->data2ptr = SvPVbyte_nolen (req->fh);	1250	req->data2ptr = SvPVbyte_nolen (req->fh);
1018	req->data = newSVsv (newpath);	1251	req->data = newSVsv (newpath);
1019	req->dataptr = SvPVbyte_nolen (req->data);	1252	req->dataptr = SvPVbyte_nolen (req->data);
1020		1253
1021	send_req (req);	1254	REQ_SEND;
1022	}	1255	}
1023		1256
1024	void	1257	void
1025	aio_readdir(pathname,callback=&PL_sv_undef)	1258	aio_sleep (delay,callback=&PL_sv_undef)
1026	SV * pathname	1259	double delay
1027	SV * callback	1260	SV * callback
		1261	PPCODE:
		1262	{
		1263	dREQ;
		1264
		1265	req->type = REQ_SLEEP;
		1266	req->fd = delay < 0. ? 0 : delay;
		1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_group (callback=&PL_sv_undef)
		1274	SV * callback
		1275	PROTOTYPE: ;$
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = REQ_GROUP;
		1281	req_send (req);
		1282
		1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1284	}
		1285
		1286	void
		1287	aio_nop (callback=&PL_sv_undef)
		1288	SV * callback
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = REQ_NOP;
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	#if 0
		1299
		1300	void
		1301	aio_pri (int pri = DEFAULT_PRI)
1028	CODE:	1302	CODE:
1029	{	1303	if (pri < PRI_MIN) pri = PRI_MIN;
1030	dREQ;	1304	if (pri > PRI_MAX) pri = PRI_MAX;
1031		1305	next_pri = pri + PRI_BIAS;
1032	req->type = REQ_READDIR;
1033	req->data = newSVsv (pathname);
1034	req->dataptr = SvPVbyte_nolen (req->data);
1035
1036	send_req (req);
1037	}
1038		1306
		1307	#endif
		1308
1039	void	1309	void
1040	flush()	1310	flush ()
1041	PROTOTYPE:	1311	PROTOTYPE:
1042	CODE:	1312	CODE:
1043	while (nreqs)	1313	while (nreqs)
1044	{	1314	{
1045	poll_wait ();	1315	poll_wait ();
…		…
1085	CODE:	1355	CODE:
1086	RETVAL = nreqs;	1356	RETVAL = nreqs;
1087	OUTPUT:	1357	OUTPUT:
1088	RETVAL	1358	RETVAL
1089		1359
		1360	PROTOTYPES: DISABLE
		1361
		1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1363
		1364	void
		1365	cancel (aio_req_ornot req)
		1366	CODE:
		1367	req_cancel (req);
		1368
		1369	void
		1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1371	CODE:
		1372	SvREFCNT_dec (req->callback);
		1373	req->callback = newSVsv (callback);
		1374
		1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1376
		1377	void
		1378	add (aio_req grp, ...)
		1379	PPCODE:
		1380	{
		1381	int i;
		1382	aio_req req;
		1383
		1384	if (grp->fd == 2)
		1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1386
		1387	for (i = 1; i < items; ++i )
		1388	{
		1389	if (GIMME_V != G_VOID)
		1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1391
		1392	req = SvAIO_REQ (ST (i));
		1393
		1394	if (req)
		1395	{
		1396	++grp->length;
		1397	req->grp = grp;
		1398
		1399	req->grp_prev = 0;
		1400	req->grp_next = grp->grp_first;
		1401
		1402	if (grp->grp_first)
		1403	grp->grp_first->grp_prev = req;
		1404
		1405	grp->grp_first = req;
		1406	}
		1407	}
		1408	}
		1409
		1410	void
		1411	result (aio_req grp, ...)
		1412	CODE:
		1413	{
		1414	int i;
		1415	AV *av = newAV ();
		1416
		1417	for (i = 1; i < items; ++i )
		1418	av_push (av, newSVsv (ST (i)));
		1419
		1420	SvREFCNT_dec (grp->data);
		1421	grp->data = (SV *)av;
		1422	}
		1423
		1424	void
		1425	feed_limit (aio_req grp, int limit)
		1426	CODE:
		1427	grp->fd2 = limit;
		1428	aio_grp_feed (grp);
		1429
		1430	void
		1431	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1432	CODE:
		1433	{
		1434	SvREFCNT_dec (grp->fh2);
		1435	grp->fh2 = newSVsv (callback);
		1436
		1437	if (grp->fd2 <= 0)
		1438	grp->fd2 = 2;
		1439
		1440	aio_grp_feed (grp);
		1441	}
		1442

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs. Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC