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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
39	/* used for struct dirent, AIX doesn't provide it */	47	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	48	#ifndef NAME_MAX
41	# define NAME_MAX 4096	49	# define NAME_MAX 4096
42	#endif	50	#endif
43		51
		52	#ifndef PTHREAD_STACK_MIN
		53	/* care for broken platforms, e.g. windows */
		54	# define PTHREAD_STACK_MIN 16384
		55	#endif
		56
44	#if __ia64	57	#if __ia64
45	# define STACKSIZE 65536	58	# define STACKSIZE 65536
		59	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		60	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	61	#else
47	# define STACKSIZE 8192	62	# define STACKSIZE 16384
48	#endif	63	#endif
		64
		65	/* buffer size for various temporary buffers */
		66	#define AIO_BUFSIZE 65536
		67
		68	#define dBUF \
		69	char *aio_buf; \
		70	LOCK (wrklock); \
		71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		72	UNLOCK (wrklock); \
		73	if (!aio_buf) \
		74	return -1;
49		75
50	enum {	76	enum {
51	REQ_QUIT,	77	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	78	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	82	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	84	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	85	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	86	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	87	REQ_BUSY,
62	};	88	};
63		89
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	90	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	91	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		92
67	typedef struct aio_cb	93	typedef struct aio_cb
68	{	94	{
69	struct aio_cb *volatile next;	95	struct aio_cb *volatile next;
70
71	struct aio_cb grp, grp_prev, grp_next, grp_first;
72
73	SV self; / the perl counterpart of this request, if any */
74		96
75	SV data, callback;	97	SV data, callback;
76	SV fh, fh2;	98	SV fh, fh2;
77	void dataptr, data2ptr;	99	void dataptr, data2ptr;
78	Stat_t *statdata;	100	Stat_t *statdata;
79	off_t offset;	101	off_t offset;
80	size_t length;	102	size_t length;
81	ssize_t result;	103	ssize_t result;
82		104
		105	STRLEN dataoffset;
83	int type;	106	int type;
84	int fd, fd2;	107	int fd, fd2;
85	int errorno;	108	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	109	mode_t mode; /* open */
		110
88	unsigned char cancelled;	111	unsigned char flags;
		112	unsigned char pri;
		113
		114	SV self; / the perl counterpart of this request, if any */
		115	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	116	} aio_cb;
		117
		118	enum {
		119	FLAG_CANCELLED = 0x01,
		120	};
90		121
91	typedef aio_cb *aio_req;	122	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	123	typedef aio_cb *aio_req_ornot;
93		124
		125	enum {
		126	PRI_MIN = -4,
		127	PRI_MAX = 4,
		128
		129	DEFAULT_PRI = 0,
		130	PRI_BIAS = -PRI_MIN,
		131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		132	};
		133
		134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		135
94	static int started, wanted;	136	static int started, wanted;
95	static volatile int nreqs;	137	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];	138	static int respipe [2];
98		139
		140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		142	#else
		143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		144	#endif
		145
		146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		148
		149	/* worker threasd management */
		150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		151
		152	typedef struct worker {
		153	/* locked by wrklock */
		154	struct worker prev, next;
		155
		156	pthread_t tid;
		157
		158	/* locked by reslock, reqlock or wrklock */
		159	aio_req req; /* currently processed request */
		160	void *dbuf;
		161	DIR *dirp;
		162	} worker;
		163
		164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		165
		166	static void worker_clear (worker *wrk)
		167	{
		168	if (wrk->dirp)
		169	{
		170	closedir (wrk->dirp);
		171	wrk->dirp = 0;
		172	}
		173
		174	if (wrk->dbuf)
		175	{
		176	free (wrk->dbuf);
		177	wrk->dbuf = 0;
		178	}
		179	}
		180
		181	static void worker_free (worker *wrk)
		182	{
		183	wrk->next->prev = wrk->prev;
		184	wrk->prev->next = wrk->next;
		185
		186	free (wrk);
		187	}
		188
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		192
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	193	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	194	* a somewhat faster data structure might be nice, but
		195	* with 8 priorities this actually needs <20 insns
		196	* per shift, the most expensive operation.
		197	*/
		198	typedef struct {
		199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		200	int size;
		201	} reqq;
105		202
		203	static reqq req_queue;
		204	static reqq res_queue;
		205
		206	int reqq_push (reqq *q, aio_req req)
		207	{
		208	int pri = req->pri;
		209	req->next = 0;
		210
		211	if (q->qe[pri])
		212	{
		213	q->qe[pri]->next = req;
		214	q->qe[pri] = req;
		215	}
		216	else
		217	q->qe[pri] = q->qs[pri] = req;
		218
		219	return q->size++;
		220	}
		221
		222	aio_req reqq_shift (reqq *q)
		223	{
		224	int pri;
		225
		226	if (!q->size)
		227	return 0;
		228
		229	--q->size;
		230
		231	for (pri = NUM_PRI; pri--; )
		232	{
		233	aio_req req = q->qs[pri];
		234
		235	if (req)
		236	{
		237	if (!(q->qs[pri] = req->next))
		238	q->qe[pri] = 0;
		239
		240	return req;
		241	}
		242	}
		243
		244	abort ();
		245	}
		246
		247	static int poll_cb ();
106	static void req_invoke (aio_req req);	248	static void req_invoke (aio_req req);
107	static void req_free (aio_req req);	249	static void req_free (aio_req req);
		250	static void req_cancel (aio_req req);
108		251
109	/* must be called at most once */	252	/* must be called at most once */
110	static SV req_sv (aio_req req, const char klass)	253	static SV req_sv (aio_req req, const char klass)
111	{	254	{
112	if (!req->self)	255	if (!req->self)
…		…
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
119	}	262	}
120		263
121	static aio_req SvAIO_REQ (SV *sv)	264	static aio_req SvAIO_REQ (SV *sv)
122	{	265	{
		266	MAGIC *mg;
		267
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	268	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
124	croak ("object of class " AIO_REQ_KLASS " expected");	269	croak ("object of class " AIO_REQ_KLASS " expected");
125		270
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		272
128	return mg ? (aio_req)mg->mg_ptr : 0;	273	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	274	}
130		275
131	static void aio_grp_feed (aio_req grp)	276	static void aio_grp_feed (aio_req grp)
132	{	277	{
133	while (grp->length < grp->fd2)	278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
134	{	279	{
135	int old_len = grp->length;	280	int old_len = grp->length;
136		281
137	if (grp->fh2 && SvOK (grp->fh2))	282	if (grp->fh2 && SvOK (grp->fh2))
138	{	283	{
…		…
141	ENTER;	286	ENTER;
142	SAVETMPS;	287	SAVETMPS;
143	PUSHMARK (SP);	288	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;	290	PUTBACK;
146	call_sv (grp->fh2, G_VOID \| G_EVAL);	291	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
147	SPAGAIN;	292	SPAGAIN;
148	FREETMPS;	293	FREETMPS;
149	LEAVE;	294	LEAVE;
150	}	295	}
151		296
…		…
174	}	319	}
175	}	320	}
176		321
177	static void poll_wait ()	322	static void poll_wait ()
178	{	323	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;	324	fd_set rfd;
		325
		326	while (nreqs)
		327	{
		328	int size;
		329	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		330	LOCK (reslock);
		331	#endif
		332	size = res_queue.size;
		333	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		334	UNLOCK (reslock);
		335	#endif
		336
		337	if (size)
		338	return;
		339
182	FD_ZERO(&rfd);	340	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);	341	FD_SET(respipe [0], &rfd);
184		342
185	select (respipe [0] + 1, &rfd, 0, 0, 0);	343	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}	344	}
187	}	345	}
188		346
189	static void req_invoke (aio_req req)	347	static void req_invoke (aio_req req)
190	{	348	{
191	dSP;	349	dSP;
192	int errorno = errno;
193		350
194	if (req->cancelled \|\| !SvOK (req->callback))	351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
195	return;	352	{
196
197	errno = req->errorno;	353	errno = req->errorno;
198		354
199	ENTER;	355	ENTER;
200	SAVETMPS;	356	SAVETMPS;
201	PUSHMARK (SP);	357	PUSHMARK (SP);
202	EXTEND (SP, 1);	358	EXTEND (SP, 1);
203		359
204	switch (req->type)	360	switch (req->type)
205	{
206	case REQ_READDIR:
207	{	361	{
208	SV *rv = &PL_sv_undef;	362	case REQ_READDIR:
209
210	if (req->result >= 0)
211	{	363	{
212	char *buf = req->data2ptr;	364	SV *rv = &PL_sv_undef;
213	AV *av = newAV ();
214		365
215	while (req->result)	366	if (req->result >= 0)
216	{	367	{
		368	int i;
		369	char *buf = req->data2ptr;
		370	AV *av = newAV ();
		371
		372	av_extend (av, req->result - 1);
		373
		374	for (i = 0; i < req->result; ++i)
		375	{
217	SV *sv = newSVpv (buf, 0);	376	SV *sv = newSVpv (buf, 0);
218		377
219	av_push (av, sv);	378	av_store (av, i, sv);
220	buf += SvCUR (sv) + 1;	379	buf += SvCUR (sv) + 1;
221	req->result--;	380	}
		381
		382	rv = sv_2mortal (newRV_noinc ((SV *)av));
222	}	383	}
223		384
224	rv = sv_2mortal (newRV_noinc ((SV *)av));	385	PUSHs (rv);
225	}	386	}
		387	break;
226		388
227	PUSHs (rv);	389	case REQ_OPEN:
		390	{
		391	/* convert fd to fh */
		392	SV *fh;
		393
		394	PUSHs (sv_2mortal (newSViv (req->result)));
		395	PUTBACK;
		396	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		397	SPAGAIN;
		398
		399	fh = SvREFCNT_inc (POPs);
		400
		401	PUSHMARK (SP);
		402	XPUSHs (sv_2mortal (fh));
		403	}
		404	break;
		405
		406	case REQ_GROUP:
		407	req->fd = 2; /* mark group as finished */
		408
		409	if (req->data)
		410	{
		411	int i;
		412	AV av = (AV )req->data;
		413
		414	EXTEND (SP, AvFILL (av) + 1);
		415	for (i = 0; i <= AvFILL (av); ++i)
		416	PUSHs (*av_fetch (av, i, 0));
		417	}
		418	break;
		419
		420	case REQ_NOP:
		421	case REQ_BUSY:
		422	break;
		423
		424	default:
		425	PUSHs (sv_2mortal (newSViv (req->result)));
		426	break;
228	}	427	}
229	break;
230		428
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235		429
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;	430	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);	431	call_sv (req->callback, G_VOID \| G_EVAL);
273	SPAGAIN;	432	SPAGAIN;
274		433
275	FREETMPS;	434	FREETMPS;
276	LEAVE;	435	LEAVE;
277
278	errno = errorno;
279
280	if (SvTRUE (ERRSV))
281	{	436	}
282	req_free (req);
283	croak (0);
284	}
285	}
286		437
287	static void req_free (aio_req req)
288	{
289	if (req->grp)	438	if (req->grp)
290	{	439	{
291	aio_req grp = req->grp;	440	aio_req grp = req->grp;
292		441
293	/* unlink request */	442	/* unlink request */
…		…
298	grp->grp_first = req->grp_next;	447	grp->grp_first = req->grp_next;
299		448
300	aio_grp_dec (grp);	449	aio_grp_dec (grp);
301	}	450	}
302		451
		452	if (SvTRUE (ERRSV))
		453	{
		454	req_free (req);
		455	croak (0);
		456	}
		457	}
		458
		459	static void req_free (aio_req req)
		460	{
303	if (req->self)	461	if (req->self)
304	{	462	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	463	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	464	SvREFCNT_dec (req->self);
307	}	465	}
…		…
310	SvREFCNT_dec (req->fh);	468	SvREFCNT_dec (req->fh);
311	SvREFCNT_dec (req->fh2);	469	SvREFCNT_dec (req->fh2);
312	SvREFCNT_dec (req->callback);	470	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);	471	Safefree (req->statdata);
314		472
315	if (req->type == REQ_READDIR && req->result >= 0)	473	if (req->type == REQ_READDIR)
316	free (req->data2ptr);	474	free (req->data2ptr);
317		475
318	Safefree (req);	476	Safefree (req);
319	}	477	}
320		478
		479	static void req_cancel_subs (aio_req grp)
		480	{
		481	aio_req sub;
		482
		483	if (grp->type != REQ_GROUP)
		484	return;
		485
		486	SvREFCNT_dec (grp->fh2);
		487	grp->fh2 = 0;
		488
		489	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		490	req_cancel (sub);
		491	}
		492
321	static void req_cancel (aio_req req)	493	static void req_cancel (aio_req req)
322	{	494	{
323	req->cancelled = 1;	495	req->flags \|= FLAG_CANCELLED;
324		496
325	if (req->type == REQ_GROUP)	497	req_cancel_subs (req);
326	{
327	aio_req sub;
328
329	for (sub = req->grp_first; sub; sub = sub->grp_next)
330	req_cancel (sub);
331	}
332	}	498	}
333		499
334	static int poll_cb ()	500	static int poll_cb ()
335	{	501	{
336	dSP;	502	dSP;
…		…
338	int do_croak = 0;	504	int do_croak = 0;
339	aio_req req;	505	aio_req req;
340		506
341	for (;;)	507	for (;;)
342	{	508	{
343	pthread_mutex_lock (&reslock);	509	LOCK (reslock);
344	req = ress;	510	req = reqq_shift (&res_queue);
345		511
346	if (req)	512	if (req)
347	{	513	{
348	ress = req->next;
349
350	if (!ress)	514	if (!res_queue.size)
351	{	515	{
352	/* read any signals sent by the worker threads */	516	/* read any signals sent by the worker threads */
353	char buf [32];	517	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)	518	while (read (respipe [0], buf, 32) == 32)
355	;	519	;
356
357	rese = 0;
358	}	520	}
359	}	521	}
360		522
361	pthread_mutex_unlock (&reslock);	523	UNLOCK (reslock);
362		524
363	if (!req)	525	if (!req)
364	break;	526	break;
365		527
366	--nreqs;	528	--nreqs;
…		…
401	static void aio_proc(void arg);	563	static void aio_proc(void arg);
402		564
403	static void start_thread (void)	565	static void start_thread (void)
404	{	566	{
405	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
406	pthread_t tid;
407	pthread_attr_t attr;	568	pthread_attr_t attr;
		569
		570	worker *wrk = calloc (1, sizeof (worker));
		571
		572	if (!wrk)
		573	croak ("unable to allocate worker thread data");
408		574
409	pthread_attr_init (&attr);	575	pthread_attr_init (&attr);
410	pthread_attr_setstacksize (&attr, STACKSIZE);	576	pthread_attr_setstacksize (&attr, STACKSIZE);
411	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412		578
413	sigfillset (&fullsigset);	579	sigfillset (&fullsigset);
		580
		581	LOCK (wrklock);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415		583
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		585	{
		586	wrk->prev = &wrk_first;
		587	wrk->next = wrk_first.next;
		588	wrk_first.next->prev = wrk;
		589	wrk_first.next = wrk;
417	started++;	590	started++;
		591	}
		592	else
		593	free (wrk);
418		594
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);	595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		596	UNLOCK (wrklock);
420	}	597	}
421		598
422	static void req_send (aio_req req)	599	static void req_send (aio_req req)
423	{	600	{
424	while (started < wanted && nreqs >= started)	601	while (started < wanted && nreqs >= started)
425	start_thread ();	602	start_thread ();
426		603
427	++nreqs;	604	++nreqs;
428		605
429	pthread_mutex_lock (&reqlock);	606	LOCK (reqlock);
430		607	reqq_push (&req_queue, req);
431	req->next = 0;
432
433	if (reqe)
434	{
435	reqe->next = req;
436	reqe = req;
437	}
438	else
439	reqe = reqs = req;
440
441	pthread_cond_signal (&reqwait);	608	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);	609	UNLOCK (reqlock);
443
444	if (nreqs > max_outstanding)
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}	610	}
455		611
456	static void end_thread (void)	612	static void end_thread (void)
457	{	613	{
458	aio_req req;	614	aio_req req;
		615
459	Newz (0, req, 1, aio_cb);	616	Newz (0, req, 1, aio_cb);
		617
460	req->type = REQ_QUIT;	618	req->type = REQ_QUIT;
		619	req->pri = PRI_MAX + PRI_BIAS;
461		620
462	req_send (req);	621	req_send (req);
463	}	622	}
464		623
465	static void min_parallel (int nthreads)	624	static void min_parallel (int nthreads)
…		…
517	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
518	{	677	{
519	ssize_t res;	678	ssize_t res;
520	off_t ooffset;	679	off_t ooffset;
521		680
522	pthread_mutex_lock (&preadwritelock);	681	LOCK (preadwritelock);
523	ooffset = lseek (fd, 0, SEEK_CUR);	682	ooffset = lseek (fd, 0, SEEK_CUR);
524	lseek (fd, offset, SEEK_SET);	683	lseek (fd, offset, SEEK_SET);
525	res = read (fd, buf, count);	684	res = read (fd, buf, count);
526	lseek (fd, ooffset, SEEK_SET);	685	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);	686	UNLOCK (preadwritelock);
528		687
529	return res;	688	return res;
530	}	689	}
531		690
532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
533	{	692	{
534	ssize_t res;	693	ssize_t res;
535	off_t ooffset;	694	off_t ooffset;
536		695
537	pthread_mutex_lock (&preadwritelock);	696	LOCK (preadwritelock);
538	ooffset = lseek (fd, 0, SEEK_CUR);	697	ooffset = lseek (fd, 0, SEEK_CUR);
539	lseek (fd, offset, SEEK_SET);	698	lseek (fd, offset, SEEK_SET);
540	res = write (fd, buf, count);	699	res = write (fd, buf, count);
541	lseek (fd, offset, SEEK_SET);	700	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);	701	UNLOCK (preadwritelock);
543		702
544	return res;	703	return res;
545	}	704	}
546	#endif	705	#endif
547		706
548	#if !HAVE_FDATASYNC	707	#if !HAVE_FDATASYNC
549	# define fdatasync fsync	708	# define fdatasync fsync
550	#endif	709	#endif
551		710
552	#if !HAVE_READAHEAD	711	#if !HAVE_READAHEAD
553	# define readahead aio_readahead	712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
554		713
555	static ssize_t readahead (int fd, off_t offset, size_t count)	714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
556	{	715	{
557	char readahead_buf[4096];	716	dBUF;
558		717
559	while (count > 0)	718	while (count > 0)
560	{	719	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
562		721
563	pread (fd, readahead_buf, len, offset);	722	pread (fd, aio_buf, len, offset);
564	offset += len;	723	offset += len;
565	count -= len;	724	count -= len;
566	}	725	}
567		726
568	errno = 0;	727	errno = 0;
569	}	728	}
		729
570	#endif	730	#endif
571		731
572	#if !HAVE_READDIR_R	732	#if !HAVE_READDIR_R
573	# define readdir_r aio_readdir_r	733	# define readdir_r aio_readdir_r
574		734
…		…
577	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	737	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
578	{	738	{
579	struct dirent *e;	739	struct dirent *e;
580	int errorno;	740	int errorno;
581		741
582	pthread_mutex_lock (&readdirlock);	742	LOCK (readdirlock);
583		743
584	e = readdir (dirp);	744	e = readdir (dirp);
585	errorno = errno;	745	errorno = errno;
586		746
587	if (e)	747	if (e)
…		…
590	strcpy (ent->d_name, e->d_name);	750	strcpy (ent->d_name, e->d_name);
591	}	751	}
592	else	752	else
593	*res = 0;	753	*res = 0;
594		754
595	pthread_mutex_unlock (&readdirlock);	755	UNLOCK (readdirlock);
596		756
597	errno = errorno;	757	errno = errorno;
598	return e ? 0 : -1;	758	return e ? 0 : -1;
599	}	759	}
600	#endif	760	#endif
601		761
602	/* sendfile always needs emulation */	762	/* sendfile always needs emulation */
603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
604	{	764	{
605	ssize_t res;	765	ssize_t res;
606		766
607	if (!count)	767	if (!count)
608	return 0;	768	return 0;
…		…
657	#endif	817	#endif
658	)	818	)
659	)	819	)
660	{	820	{
661	/* emulate sendfile. this is a major pain in the ass */	821	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];	822	dBUF;
		823
663	res = 0;	824	res = 0;
664		825
665	while (count)	826	while (count)
666	{	827	{
667	ssize_t cnt;	828	ssize_t cnt;
668		829
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
670		831
671	if (cnt <= 0)	832	if (cnt <= 0)
672	{	833	{
673	if (cnt && !res) res = -1;	834	if (cnt && !res) res = -1;
674	break;	835	break;
675	}	836	}
676		837
677	cnt = write (ofd, buf, cnt);	838	cnt = write (ofd, aio_buf, cnt);
678		839
679	if (cnt <= 0)	840	if (cnt <= 0)
680	{	841	{
681	if (cnt && !res) res = -1;	842	if (cnt && !res) res = -1;
682	break;	843	break;
…		…
690		851
691	return res;	852	return res;
692	}	853	}
693		854
694	/* read a full directory */	855	/* read a full directory */
695	static int scandir_ (const char path, void *namesp)	856	static void scandir_ (aio_req req, worker *self)
696	{	857	{
697	DIR *dirp = opendir (path);	858	DIR *dirp;
698	union	859	union
699	{	860	{
700	struct dirent d;	861	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;	863	} *u;
703	struct dirent *entp;	864	struct dirent *entp;
704	char name, names;	865	char name, names;
705	int memlen = 4096;	866	int memlen = 4096;
706	int memofs = 0;	867	int memofs = 0;
707	int res = 0;	868	int res = 0;
708	int errorno;	869	int errorno;
709		870
710	if (!dirp)	871	LOCK (wrklock);
711	return -1;	872	self->dirp = dirp = opendir (req->dataptr);
		873	self->dbuf = u = malloc (sizeof (*u));
		874	UNLOCK (wrklock);
712		875
713	names = malloc (memlen);	876	req->data2ptr = names = malloc (memlen);
714		877
		878	if (dirp && u && names)
715	for (;;)	879	for (;;)
716	{	880	{
		881	errno = 0;
717	errno = 0, readdir_r (dirp, &u.d, &entp);	882	readdir_r (dirp, &u->d, &entp);
718		883
719	if (!entp)	884	if (!entp)
720	break;	885	break;
721		886
722	name = entp->d_name;	887	name = entp->d_name;
723		888
724	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	889	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
725	{	890	{
726	int len = strlen (name) + 1;	891	int len = strlen (name) + 1;
727		892
728	res++;	893	res++;
729		894
730	while (memofs + len > memlen)	895	while (memofs + len > memlen)
731	{	896	{
732	memlen *= 2;	897	memlen *= 2;
		898	LOCK (wrklock);
733	names = realloc (names, memlen);	899	req->data2ptr = names = realloc (names, memlen);
		900	UNLOCK (wrklock);
		901
734	if (!names)	902	if (!names)
735	break;	903	break;
736	}	904	}
737		905
738	memcpy (names + memofs, name, len);	906	memcpy (names + memofs, name, len);
739	memofs += len;	907	memofs += len;
740	}	908	}
741	}	909	}
742		910
743	errorno = errno;
744	closedir (dirp);
745
746	if (errorno)	911	if (errno)
747	{
748	free (names);
749	errno = errorno;
750	res = -1;	912	res = -1;
751	}	913
752		914	req->result = res;
753	namesp = (void )names;
754	return res;
755	}	915	}
756		916
757	/*****************************************************************************/	917	/*****************************************************************************/
758		918
759	static void aio_proc (void thr_arg)	919	static void aio_proc (void thr_arg)
760	{	920	{
761	aio_req req;	921	aio_req req;
762	int type;	922	int type;
		923	worker self = (worker )thr_arg;
763		924
764	do	925	do
765	{	926	{
766	pthread_mutex_lock (&reqlock);	927	LOCK (reqlock);
767		928
768	for (;;)	929	for (;;)
769	{	930	{
770	req = reqs;	931	self->req = req = reqq_shift (&req_queue);
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777		932
778	if (req)	933	if (req)
779	break;	934	break;
780		935
781	pthread_cond_wait (&reqwait, &reqlock);	936	pthread_cond_wait (&reqwait, &reqlock);
782	}	937	}
783		938
784	pthread_mutex_unlock (&reqlock);	939	UNLOCK (reqlock);
785		940
786	errno = 0; /* strictly unnecessary */	941	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */	942	type = req->type; /* remember type for QUIT check */
		943
		944	if (!(req->flags & FLAG_CANCELLED))
		945	switch (type)
790	{	946	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	947	case REQ_READ: req->result = pread (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;	948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793		949
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
796		952
797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800		956
…		…
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808		964
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;	966	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	967	case REQ_READDIR: scandir_ (req, self); break;
812		968
813	case REQ_SLEEP:	969	case REQ_BUSY:
814	{	970	{
815	struct timeval tv;	971	struct timeval tv;
816		972
817	tv.tv_sec = req->fd;	973	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;	974	tv.tv_usec = req->fd2;
819		975
820	req->result = select (0, 0, 0, 0, &tv);	976	req->result = select (0, 0, 0, 0, &tv);
821	}	977	}
822		978
		979	case REQ_GROUP:
		980	case REQ_NOP:
823	case REQ_QUIT:	981	case REQ_QUIT:
824	break;	982	break;
825		983
826	default:	984	default:
827	req->result = ENOSYS;	985	req->result = ENOSYS;
828	break;	986	break;
829	}	987	}
830		988
831	req->errorno = errno;	989	req->errorno = errno;
832		990
833	pthread_mutex_lock (&reslock);	991	LOCK (reslock);
834		992
835	req->next = 0;	993	if (!reqq_push (&res_queue, req))
836
837	printf ("queue rese %p\n", rese);//D
838	if (rese)
839	{
840	rese->next = req;
841	rese = req;
842	}
843	else
844	{
845	rese = ress = req;
846
847	/* write a dummy byte to the pipe so fh becomes ready */	994	/* write a dummy byte to the pipe so fh becomes ready */
848	write (respipe [1], &respipe, 1);	995	write (respipe [1], &respipe, 1);
849	}
850		996
851	pthread_mutex_unlock (&reslock);	997	self->req = 0;
		998	worker_clear (self);
		999
		1000	UNLOCK (reslock);
852	}	1001	}
853	while (type != REQ_QUIT);	1002	while (type != REQ_QUIT);
854		1003
		1004	LOCK (wrklock);
		1005	worker_free (self);
		1006	UNLOCK (wrklock);
		1007
855	return 0;	1008	return 0;
856	}	1009	}
857		1010
858	/*****************************************************************************/	1011	/*****************************************************************************/
859		1012
860	static void atfork_prepare (void)	1013	static void atfork_prepare (void)
861	{	1014	{
862	pthread_mutex_lock (&reqlock);	1015	LOCK (wrklock);
863	pthread_mutex_lock (&reslock);	1016	LOCK (reqlock);
		1017	LOCK (reslock);
864	#if !HAVE_PREADWRITE	1018	#if !HAVE_PREADWRITE
865	pthread_mutex_lock (&preadwritelock);	1019	LOCK (preadwritelock);
866	#endif	1020	#endif
867	#if !HAVE_READDIR_R	1021	#if !HAVE_READDIR_R
868	pthread_mutex_lock (&readdirlock);	1022	LOCK (readdirlock);
869	#endif	1023	#endif
870	}	1024	}
871		1025
872	static void atfork_parent (void)	1026	static void atfork_parent (void)
873	{	1027	{
874	#if !HAVE_READDIR_R	1028	#if !HAVE_READDIR_R
875	pthread_mutex_unlock (&readdirlock);	1029	UNLOCK (readdirlock);
876	#endif	1030	#endif
877	#if !HAVE_PREADWRITE	1031	#if !HAVE_PREADWRITE
878	pthread_mutex_unlock (&preadwritelock);	1032	UNLOCK (preadwritelock);
879	#endif	1033	#endif
880	pthread_mutex_unlock (&reslock);	1034	UNLOCK (reslock);
881	pthread_mutex_unlock (&reqlock);	1035	UNLOCK (reqlock);
		1036	UNLOCK (wrklock);
882	}	1037	}
883		1038
884	static void atfork_child (void)	1039	static void atfork_child (void)
885	{	1040	{
886	aio_req prv;	1041	aio_req prv;
887		1042
		1043	while (prv = reqq_shift (&req_queue))
		1044	req_free (prv);
		1045
		1046	while (prv = reqq_shift (&res_queue))
		1047	req_free (prv);
		1048
		1049	while (wrk_first.next != &wrk_first)
		1050	{
		1051	worker *wrk = wrk_first.next;
		1052
		1053	if (wrk->req)
		1054	req_free (wrk->req);
		1055
		1056	worker_clear (wrk);
		1057	worker_free (wrk);
		1058	}
		1059
888	started = 0;	1060	started = 0;
889		1061	nreqs = 0;
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		1062
908	close (respipe [0]);	1063	close (respipe [0]);
909	close (respipe [1]);	1064	close (respipe [1]);
910	create_pipe ();	1065	create_pipe ();
911		1066
912	atfork_parent ();	1067	atfork_parent ();
913	}	1068	}
914		1069
915	#define dREQ \	1070	#define dREQ \
916	aio_req req; \	1071	aio_req req; \
		1072	int req_pri = next_pri; \
		1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
917	\	1074	\
918	if (SvOK (callback) && !SvROK (callback)) \	1075	if (SvOK (callback) && !SvROK (callback)) \
919	croak ("callback must be undef or of reference type"); \	1076	croak ("callback must be undef or of reference type"); \
920	\	1077	\
921	Newz (0, req, 1, aio_cb); \	1078	Newz (0, req, 1, aio_cb); \
922	if (!req) \	1079	if (!req) \
923	croak ("out of memory during aio_req allocation"); \	1080	croak ("out of memory during aio_req allocation"); \
924	\	1081	\
925	req->callback = newSVsv (callback)	1082	req->callback = newSVsv (callback); \
		1083	req->pri = req_pri
926		1084
927	#define REQ_SEND \	1085	#define REQ_SEND \
928	req_send (req); \	1086	req_send (req); \
929	\	1087	\
930	if (GIMME_V != G_VOID) \	1088	if (GIMME_V != G_VOID) \
…		…
952		1110
953	void	1111	void
954	max_parallel (nthreads)	1112	max_parallel (nthreads)
955	int nthreads	1113	int nthreads
956	PROTOTYPE: $	1114	PROTOTYPE: $
957
958	int
959	max_outstanding (nreqs)
960	int nreqs
961	PROTOTYPE: $
962	CODE:
963	RETVAL = max_outstanding;
964	max_outstanding = nreqs;
965		1115
966	void	1116	void
967	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
968	SV * pathname	1118	SV * pathname
969	int flags	1119	int flags
…		…
1184		1334
1185	REQ_SEND;	1335	REQ_SEND;
1186	}	1336	}
1187		1337
1188	void	1338	void
1189	aio_sleep (delay,callback=&PL_sv_undef)	1339	aio_busy (delay,callback=&PL_sv_undef)
1190	double delay	1340	double delay
1191	SV * callback	1341	SV * callback
1192	PPCODE:	1342	PPCODE:
1193	{	1343	{
1194	dREQ;	1344	dREQ;
1195		1345
1196	req->type = REQ_SLEEP;	1346	req->type = REQ_BUSY;
1197	req->fd = delay < 0. ? 0 : delay;	1347	req->fd = delay < 0. ? 0 : delay;
1198	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1199		1349
1200	REQ_SEND;	1350	REQ_SEND;
1201	}	1351	}
…		…
1205	SV * callback	1355	SV * callback
1206	PROTOTYPE: ;$	1356	PROTOTYPE: ;$
1207	PPCODE:	1357	PPCODE:
1208	{	1358	{
1209	dREQ;	1359	dREQ;
		1360
1210	req->type = REQ_GROUP;	1361	req->type = REQ_GROUP;
1211	req_send (req);	1362	req_send (req);
		1363
1212	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1213	}	1365	}
		1366
		1367	void
		1368	aio_nop (callback=&PL_sv_undef)
		1369	SV * callback
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_NOP;
		1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aioreq_pri (int pri = DEFAULT_PRI)
		1381	CODE:
		1382	if (pri < PRI_MIN) pri = PRI_MIN;
		1383	if (pri > PRI_MAX) pri = PRI_MAX;
		1384	next_pri = pri + PRI_BIAS;
		1385
		1386	void
		1387	aioreq_nice (int nice = 0)
		1388	CODE:
		1389	nice = next_pri - nice;
		1390	if (nice < PRI_MIN) nice = PRI_MIN;
		1391	if (nice > PRI_MAX) nice = PRI_MAX;
		1392	next_pri = nice + PRI_BIAS;
1214		1393
1215	void	1394	void
1216	flush ()	1395	flush ()
1217	PROTOTYPE:	1396	PROTOTYPE:
1218	CODE:	1397	CODE:
…		…
1267		1446
1268	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1269		1448
1270	void	1449	void
1271	cancel (aio_req_ornot req)	1450	cancel (aio_req_ornot req)
1272	PROTOTYPE:
1273	CODE:	1451	CODE:
1274	req_cancel (req);	1452	req_cancel (req);
1275		1453
		1454	void
		1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1456	CODE:
		1457	SvREFCNT_dec (req->callback);
		1458	req->callback = newSVsv (callback);
		1459
1276	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1277		1461
1278	void	1462	void
1279	add (aio_req grp, ...)	1463	add (aio_req grp, ...)
1280	PPCODE:	1464	PPCODE:
1281	{	1465	{
1282	int i;	1466	int i;
		1467	aio_req req;
1283		1468
1284	if (grp->fd == 2)	1469	if (grp->fd == 2)
1285	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1286		1471
1287	for (i = 1; i < items; ++i )	1472	for (i = 1; i < items; ++i )
1288	{	1473	{
1289	if (GIMME_V != G_VOID)	1474	if (GIMME_V != G_VOID)
1290	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1291		1476
1292	aio_req req = SvAIO_REQ (ST (i));	1477	req = SvAIO_REQ (ST (i));
1293		1478
1294	if (req)	1479	if (req)
1295	{	1480	{
1296	++grp->length;	1481	++grp->length;
1297	req->grp = grp;	1482	req->grp = grp;
…		…
1306	}	1491	}
1307	}	1492	}
1308	}	1493	}
1309		1494
1310	void	1495	void
		1496	cancel_subs (aio_req_ornot req)
		1497	CODE:
		1498	req_cancel_subs (req);
		1499
		1500	void
1311	result (aio_req grp, ...)	1501	result (aio_req grp, ...)
1312	CODE:	1502	CODE:
1313	{	1503	{
1314	int i;	1504	int i;
1315	AV *av = newAV ();	1505	AV *av = newAV ();
…		…
1320	SvREFCNT_dec (grp->data);	1510	SvREFCNT_dec (grp->data);
1321	grp->data = (SV *)av;	1511	grp->data = (SV *)av;
1322	}	1512	}
1323		1513
1324	void	1514	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)	1515	limit (aio_req grp, int limit)
1336	CODE:	1516	CODE:
1337	grp->fd2 = limit;	1517	grp->fd2 = limit;
1338	aio_grp_feed (grp);	1518	aio_grp_feed (grp);
1339		1519
1340	void	1520	void
1341	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1521	feed (aio_req grp, SV *callback=&PL_sv_undef)
1342	CODE:	1522	CODE:
1343	{	1523	{
1344	SvREFCNT_dec (grp->fh2);	1524	SvREFCNT_dec (grp->fh2);
1345	grp->fh2 = newSVsv (callback);	1525	grp->fh2 = newSVsv (callback);
1346		1526

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC vs. Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC