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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.74 by root, Wed Oct 25 17:57:30 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"
41	# define NAME_MAX 4096	49	# define NAME_MAX 4096
42	#endif	50	#endif
43		51
44	#if __ia64	52	#if __ia64
45	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	56	#else
47	# define STACKSIZE 8192	57	# define STACKSIZE 16384
48	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf; \
		65	LOCK (wrklock); \
		66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		67	UNLOCK (wrklock); \
		68	if (!aio_buf) \
		69	return -1;
49		70
50	enum {	71	enum {
51	REQ_QUIT,	72	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	79	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	81	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	82	REQ_BUSY,
62	};	83	};
63		84
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	86	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		87
67	typedef struct aio_cb	88	typedef struct aio_cb
68	{	89	{
69	struct aio_cb *volatile next;	90	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		91
75	SV data, callback;	92	SV data, callback;
76	SV fh, fh2;	93	SV fh, fh2;
77	void dataptr, data2ptr;	94	void dataptr, data2ptr;
78	Stat_t *statdata;	95	Stat_t *statdata;
79	off_t offset;	96	off_t offset;
80	size_t length;	97	size_t length;
81	ssize_t result;	98	ssize_t result;
82		99
		100	STRLEN dataoffset;
83	int type;	101	int type;
84	int fd, fd2;	102	int fd, fd2;
85	int errorno;	103	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	104	mode_t mode; /* open */
		105
88	unsigned char cancelled;	106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV self; / the perl counterpart of this request, if any */
		110	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	111	} aio_cb;
		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
90		116
91	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	118	typedef aio_cb *aio_req_ornot;
93		119
		120	enum {
		121	PRI_MIN = -4,
		122	PRI_MAX = 4,
		123
		124	DEFAULT_PRI = 0,
		125	PRI_BIAS = -PRI_MIN,
		126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		127	};
		128
		129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		130
94	static int started, wanted;	131	static int started, wanted;
95	static volatile int nreqs;	132	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];	133	static int respipe [2];
98		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
		141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		143
		144	/* worker threasd management */
		145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		146
		147	typedef struct worker {
		148	/* locked by wrklock */
		149	struct worker prev, next;
		150
		151	pthread_t tid;
		152
		153	/* locked by reslock, reqlock or wrklock */
		154	aio_req req; /* currently processed request */
		155	void *dbuf;
		156	DIR *dirp;
		157	} worker;
		158
		159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		160
		161	static void worker_clear (worker *wrk)
		162	{
		163	if (wrk->dirp)
		164	{
		165	closedir (wrk->dirp);
		166	wrk->dirp = 0;
		167	}
		168
		169	if (wrk->dbuf)
		170	{
		171	free (wrk->dbuf);
		172	wrk->dbuf = 0;
		173	}
		174	}
		175
		176	static void worker_free (worker *wrk)
		177	{
		178	wrk->next->prev = wrk->prev;
		179	wrk->prev->next = wrk->next;
		180
		181	free (wrk);
		182	}
		183
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		187
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	188	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	189	* a somewhat faster data structure might be nice, but
		190	* with 8 priorities this actually needs <20 insns
		191	* per shift, the most expensive operation.
		192	*/
		193	typedef struct {
		194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		195	int size;
		196	} reqq;
105		197
		198	static reqq req_queue;
		199	static reqq res_queue;
		200
		201	int reqq_push (reqq *q, aio_req req)
		202	{
		203	int pri = req->pri;
		204	req->next = 0;
		205
		206	if (q->qe[pri])
		207	{
		208	q->qe[pri]->next = req;
		209	q->qe[pri] = req;
		210	}
		211	else
		212	q->qe[pri] = q->qs[pri] = req;
		213
		214	return q->size++;
		215	}
		216
		217	aio_req reqq_shift (reqq *q)
		218	{
		219	int pri;
		220
		221	if (!q->size)
		222	return 0;
		223
		224	--q->size;
		225
		226	for (pri = NUM_PRI; pri--; )
		227	{
		228	aio_req req = q->qs[pri];
		229
		230	if (req)
		231	{
		232	if (!(q->qs[pri] = req->next))
		233	q->qe[pri] = 0;
		234
		235	return req;
		236	}
		237	}
		238
		239	abort ();
		240	}
		241
		242	static int poll_cb ();
		243	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	244	static void req_free (aio_req req);
		245	static void req_cancel (aio_req req);
107		246
108	/* must be called at most once */	247	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	248	static SV req_sv (aio_req req, const char klass)
110	{	249	{
111	if (!req->self)	250	if (!req->self)
…		…
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
118	}	257	}
119		258
120	static aio_req SvAIO_REQ (SV *sv)	259	static aio_req SvAIO_REQ (SV *sv)
121	{	260	{
		261	MAGIC *mg;
		262
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	263	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
123	croak ("object of class " AIO_REQ_KLASS " expected");	264	croak ("object of class " AIO_REQ_KLASS " expected");
124		265
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		267
127	return mg ? (aio_req)mg->mg_ptr : 0;	268	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	269	}
129		270
130	static void aio_grp_feed (aio_req grp)	271	static void aio_grp_feed (aio_req grp)
131	{	272	{
132	while (grp->length < grp->fd2)	273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
133	{	274	{
134	int old_len = grp->length;	275	int old_len = grp->length;
135		276
136	if (grp->fh2 && SvOK (grp->fh2))	277	if (grp->fh2 && SvOK (grp->fh2))
137	{	278	{
…		…
140	ENTER;	281	ENTER;
141	SAVETMPS;	282	SAVETMPS;
142	PUSHMARK (SP);	283	PUSHMARK (SP);
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144	PUTBACK;	285	PUTBACK;
145	call_sv (grp->fh2, G_VOID \| G_EVAL);	286	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
146	SPAGAIN;	287	SPAGAIN;
147	FREETMPS;	288	FREETMPS;
148	LEAVE;	289	LEAVE;
149	}	290	}
150		291
…		…
156	break;	297	break;
157	}	298	}
158	}	299	}
159	}	300	}
160		301
		302	static void aio_grp_dec (aio_req grp)
		303	{
		304	--grp->length;
		305
		306	/* call feeder, if applicable */
		307	aio_grp_feed (grp);
		308
		309	/* finish, if done */
		310	if (!grp->length && grp->fd)
		311	{
		312	req_invoke (grp);
		313	req_free (grp);
		314	}
		315	}
		316
161	static void poll_wait ()	317	static void poll_wait ()
162	{	318	{
163	if (nreqs && !ress)
164	{
165	fd_set rfd;	319	fd_set rfd;
		320
		321	while (nreqs)
		322	{
		323	int size;
		324	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		325	LOCK (reslock);
		326	#endif
		327	size = res_queue.size;
		328	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		329	UNLOCK (reslock);
		330	#endif
		331
		332	if (size)
		333	return;
		334
166	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
168		337
169	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
170	}	339	}
171	}	340	}
172		341
173	static void req_invoke (aio_req req)	342	static void req_invoke (aio_req req)
174	{	343	{
175	dSP;	344	dSP;
176	int errorno = errno;
177		345
178	if (req->cancelled \|\| !SvOK (req->callback))	346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
179	return;	347	{
180
181	errno = req->errorno;	348	errno = req->errorno;
182		349
183	ENTER;	350	ENTER;
184	SAVETMPS;	351	SAVETMPS;
185	PUSHMARK (SP);	352	PUSHMARK (SP);
186	EXTEND (SP, 1);	353	EXTEND (SP, 1);
187		354
188	switch (req->type)	355	switch (req->type)
189	{
190	case REQ_READDIR:
191	{	356	{
192	SV *rv = &PL_sv_undef;	357	case REQ_READDIR:
193
194	if (req->result >= 0)
195	{	358	{
196	char *buf = req->data2ptr;	359	SV *rv = &PL_sv_undef;
197	AV *av = newAV ();
198		360
199	while (req->result)	361	if (req->result >= 0)
200	{	362	{
		363	int i;
		364	char *buf = req->data2ptr;
		365	AV *av = newAV ();
		366
		367	av_extend (av, req->result - 1);
		368
		369	for (i = 0; i < req->result; ++i)
		370	{
201	SV *sv = newSVpv (buf, 0);	371	SV *sv = newSVpv (buf, 0);
202		372
203	av_push (av, sv);	373	av_store (av, i, sv);
204	buf += SvCUR (sv) + 1;	374	buf += SvCUR (sv) + 1;
205	req->result--;	375	}
		376
		377	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}	378	}
207		379
208	rv = sv_2mortal (newRV_noinc ((SV *)av));	380	PUSHs (rv);
209	}	381	}
		382	break;
210		383
211	PUSHs (rv);	384	case REQ_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh;
		388
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	PUTBACK;
		391	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		392	SPAGAIN;
		393
		394	fh = SvREFCNT_inc (POPs);
		395
		396	PUSHMARK (SP);
		397	XPUSHs (sv_2mortal (fh));
		398	}
		399	break;
		400
		401	case REQ_GROUP:
		402	req->fd = 2; /* mark group as finished */
		403
		404	if (req->data)
		405	{
		406	int i;
		407	AV av = (AV )req->data;
		408
		409	EXTEND (SP, AvFILL (av) + 1);
		410	for (i = 0; i <= AvFILL (av); ++i)
		411	PUSHs (*av_fetch (av, i, 0));
		412	}
		413	break;
		414
		415	case REQ_NOP:
		416	case REQ_BUSY:
		417	break;
		418
		419	default:
		420	PUSHs (sv_2mortal (newSViv (req->result)));
		421	break;
212	}	422	}
213	break;
214		423
215	case REQ_OPEN:
216	{
217	/* convert fd to fh */
218	SV *fh;
219		424
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;	425	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
223	SPAGAIN;
224
225	fh = SvREFCNT_inc (POPs);
226
227	PUSHMARK (SP);
228	XPUSHs (sv_2mortal (fh));
229	}
230	break;
231
232	case REQ_GROUP:
233	req->fd = 2; /* mark group as finished */
234
235	if (req->data)
236	{
237	int i;
238	AV av = (AV )req->data;
239
240	EXTEND (SP, AvFILL (av) + 1);
241	for (i = 0; i <= AvFILL (av); ++i)
242	PUSHs (*av_fetch (av, i, 0));
243	}
244	break;
245
246	case REQ_SLEEP:
247	break;
248
249	default:
250	PUSHs (sv_2mortal (newSViv (req->result)));
251	break;
252	}
253
254
255	PUTBACK;
256	call_sv (req->callback, G_VOID \| G_EVAL);	426	call_sv (req->callback, G_VOID \| G_EVAL);
257	SPAGAIN;	427	SPAGAIN;
258		428
259	if (SvTRUE (ERRSV))
260	{
261	req_free (req);
262	croak (0);
263	}
264
265	FREETMPS;	429	FREETMPS;
266	LEAVE;	430	LEAVE;
		431	}
267		432
268	errno = errorno;
269	}
270
271	static void req_free (aio_req req)
272	{
273	if (req->grp)	433	if (req->grp)
274	{	434	{
275	aio_req grp = req->grp;	435	aio_req grp = req->grp;
276		436
277	/* unlink request */	437	/* unlink request */
…		…
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;	439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280		440
281	if (grp->grp_first == req)	441	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;	442	grp->grp_first = req->grp_next;
283		443
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);	444	aio_grp_dec (grp);
		445	}
288		446
289	/* finish, if done */	447	if (SvTRUE (ERRSV))
290	if (!grp->length && grp->fd)	448	{
291	{
292	req_invoke (grp);
293	req_free (grp);	449	req_free (req);
294	}	450	croak (0);
295	}	451	}
		452	}
296		453
		454	static void req_free (aio_req req)
		455	{
297	if (req->self)	456	if (req->self)
298	{	457	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	458	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	459	SvREFCNT_dec (req->self);
301	}	460	}
…		…
304	SvREFCNT_dec (req->fh);	463	SvREFCNT_dec (req->fh);
305	SvREFCNT_dec (req->fh2);	464	SvREFCNT_dec (req->fh2);
306	SvREFCNT_dec (req->callback);	465	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);	466	Safefree (req->statdata);
308		467
309	if (req->type == REQ_READDIR && req->result >= 0)	468	if (req->type == REQ_READDIR)
310	free (req->data2ptr);	469	free (req->data2ptr);
311		470
312	Safefree (req);	471	Safefree (req);
313	}	472	}
314		473
		474	static void req_cancel_subs (aio_req grp)
		475	{
		476	aio_req sub;
		477
		478	if (grp->type != REQ_GROUP)
		479	return;
		480
		481	SvREFCNT_dec (grp->fh2);
		482	grp->fh2 = 0;
		483
		484	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		485	req_cancel (sub);
		486	}
		487
315	static void req_cancel (aio_req req)	488	static void req_cancel (aio_req req)
316	{	489	{
317	req->cancelled = 1;	490	req->flags \|= FLAG_CANCELLED;
318		491
319	if (req->type == REQ_GROUP)	492	req_cancel_subs (req);
320	{
321	aio_req sub;
322
323	for (sub = req->grp_first; sub; sub = sub->grp_next)
324	req_cancel (sub);
325	}
326	}	493	}
327		494
328	static int poll_cb ()	495	static int poll_cb ()
329	{	496	{
330	dSP;	497	dSP;
…		…
332	int do_croak = 0;	499	int do_croak = 0;
333	aio_req req;	500	aio_req req;
334		501
335	for (;;)	502	for (;;)
336	{	503	{
337	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
338	req = ress;	505	req = reqq_shift (&res_queue);
339		506
340	if (req)	507	if (req)
341	{	508	{
342	ress = req->next;
343
344	if (!ress)	509	if (!res_queue.size)
345	{	510	{
346	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
347	char buf [32];	512	char buf [32];
348	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
349	;	514	;
350
351	rese = 0;
352	}	515	}
353	}	516	}
354		517
355	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
356		519
357	if (!req)	520	if (!req)
358	break;	521	break;
359		522
360	nreqs--;	523	--nreqs;
361		524
362	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
363	started--;	526	started--;
364	else if (req->type == REQ_GROUP && req->length)	527	else if (req->type == REQ_GROUP && req->length)
365	{	528	{
…		…
395	static void aio_proc(void arg);	558	static void aio_proc(void arg);
396		559
397	static void start_thread (void)	560	static void start_thread (void)
398	{	561	{
399	sigset_t fullsigset, oldsigset;	562	sigset_t fullsigset, oldsigset;
400	pthread_t tid;
401	pthread_attr_t attr;	563	pthread_attr_t attr;
		564
		565	worker *wrk = calloc (1, sizeof (worker));
		566
		567	if (!wrk)
		568	croak ("unable to allocate worker thread data");
402		569
403	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406		573
407	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409		578
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		580	{
		581	wrk->prev = &wrk_first;
		582	wrk->next = wrk_first.next;
		583	wrk_first.next->prev = wrk;
		584	wrk_first.next = wrk;
411	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
412		589
413	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
414	}	592	}
415		593
416	static void req_send (aio_req req)	594	static void req_send (aio_req req)
417	{	595	{
418	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
419	start_thread ();	597	start_thread ();
420		598
421	nreqs++;	599	++nreqs;
422		600
423	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
424		602	reqq_push (&req_queue, req);
425	req->next = 0;
426
427	if (reqe)
428	{
429	reqe->next = req;
430	reqe = req;
431	}
432	else
433	reqe = reqs = req;
434
435	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
437
438	if (nreqs > max_outstanding)
439	for (;;)
440	{
441	poll_cb ();
442
443	if (nreqs <= max_outstanding)
444	break;
445
446	poll_wait ();
447	}
448	}	605	}
449		606
450	static void end_thread (void)	607	static void end_thread (void)
451	{	608	{
452	aio_req req;	609	aio_req req;
		610
453	Newz (0, req, 1, aio_cb);	611	Newz (0, req, 1, aio_cb);
		612
454	req->type = REQ_QUIT;	613	req->type = REQ_QUIT;
		614	req->pri = PRI_MAX + PRI_BIAS;
455		615
456	req_send (req);	616	req_send (req);
457	}	617	}
458		618
459	static void min_parallel (int nthreads)	619	static void min_parallel (int nthreads)
…		…
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
512	{	672	{
513	ssize_t res;	673	ssize_t res;
514	off_t ooffset;	674	off_t ooffset;
515		675
516	pthread_mutex_lock (&preadwritelock);	676	LOCK (preadwritelock);
517	ooffset = lseek (fd, 0, SEEK_CUR);	677	ooffset = lseek (fd, 0, SEEK_CUR);
518	lseek (fd, offset, SEEK_SET);	678	lseek (fd, offset, SEEK_SET);
519	res = read (fd, buf, count);	679	res = read (fd, buf, count);
520	lseek (fd, ooffset, SEEK_SET);	680	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);	681	UNLOCK (preadwritelock);
522		682
523	return res;	683	return res;
524	}	684	}
525		685
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
527	{	687	{
528	ssize_t res;	688	ssize_t res;
529	off_t ooffset;	689	off_t ooffset;
530		690
531	pthread_mutex_lock (&preadwritelock);	691	LOCK (preadwritelock);
532	ooffset = lseek (fd, 0, SEEK_CUR);	692	ooffset = lseek (fd, 0, SEEK_CUR);
533	lseek (fd, offset, SEEK_SET);	693	lseek (fd, offset, SEEK_SET);
534	res = write (fd, buf, count);	694	res = write (fd, buf, count);
535	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);	696	UNLOCK (preadwritelock);
537		697
538	return res;	698	return res;
539	}	699	}
540	#endif	700	#endif
541		701
…		…
546	#if !HAVE_READAHEAD	706	#if !HAVE_READAHEAD
547	# define readahead aio_readahead	707	# define readahead aio_readahead
548		708
549	static ssize_t readahead (int fd, off_t offset, size_t count)	709	static ssize_t readahead (int fd, off_t offset, size_t count)
550	{	710	{
551	char readahead_buf[4096];	711	dBUF;
552		712
553	while (count > 0)	713	while (count > 0)
554	{	714	{
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
556		716
557	pread (fd, readahead_buf, len, offset);	717	pread (fd, aio_buf, len, offset);
558	offset += len;	718	offset += len;
559	count -= len;	719	count -= len;
560	}	720	}
561		721
562	errno = 0;	722	errno = 0;
…		…
571	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	731	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
572	{	732	{
573	struct dirent *e;	733	struct dirent *e;
574	int errorno;	734	int errorno;
575		735
576	pthread_mutex_lock (&readdirlock);	736	LOCK (readdirlock);
577		737
578	e = readdir (dirp);	738	e = readdir (dirp);
579	errorno = errno;	739	errorno = errno;
580		740
581	if (e)	741	if (e)
…		…
584	strcpy (ent->d_name, e->d_name);	744	strcpy (ent->d_name, e->d_name);
585	}	745	}
586	else	746	else
587	*res = 0;	747	*res = 0;
588		748
589	pthread_mutex_unlock (&readdirlock);	749	UNLOCK (readdirlock);
590		750
591	errno = errorno;	751	errno = errorno;
592	return e ? 0 : -1;	752	return e ? 0 : -1;
593	}	753	}
594	#endif	754	#endif
595		755
596	/* sendfile always needs emulation */	756	/* sendfile always needs emulation */
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
598	{	758	{
599	ssize_t res;	759	ssize_t res;
600		760
601	if (!count)	761	if (!count)
602	return 0;	762	return 0;
…		…
651	#endif	811	#endif
652	)	812	)
653	)	813	)
654	{	814	{
655	/* emulate sendfile. this is a major pain in the ass */	815	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];	816	dBUF;
		817
657	res = 0;	818	res = 0;
658		819
659	while (count)	820	while (count)
660	{	821	{
661	ssize_t cnt;	822	ssize_t cnt;
662		823
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
664		825
665	if (cnt <= 0)	826	if (cnt <= 0)
666	{	827	{
667	if (cnt && !res) res = -1;	828	if (cnt && !res) res = -1;
668	break;	829	break;
669	}	830	}
670		831
671	cnt = write (ofd, buf, cnt);	832	cnt = write (ofd, aio_buf, cnt);
672		833
673	if (cnt <= 0)	834	if (cnt <= 0)
674	{	835	{
675	if (cnt && !res) res = -1;	836	if (cnt && !res) res = -1;
676	break;	837	break;
…		…
684		845
685	return res;	846	return res;
686	}	847	}
687		848
688	/* read a full directory */	849	/* read a full directory */
689	static int scandir_ (const char path, void *namesp)	850	static void scandir_ (aio_req req, worker *self)
690	{	851	{
691	DIR *dirp = opendir (path);	852	DIR *dirp;
692	union	853	union
693	{	854	{
694	struct dirent d;	855	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;	857	} *u;
697	struct dirent *entp;	858	struct dirent *entp;
698	char name, names;	859	char name, names;
699	int memlen = 4096;	860	int memlen = 4096;
700	int memofs = 0;	861	int memofs = 0;
701	int res = 0;	862	int res = 0;
702	int errorno;	863	int errorno;
703		864
704	if (!dirp)	865	LOCK (wrklock);
705	return -1;	866	self->dirp = dirp = opendir (req->dataptr);
		867	self->dbuf = u = malloc (sizeof (*u));
		868	UNLOCK (wrklock);
706		869
707	names = malloc (memlen);	870	req->data2ptr = names = malloc (memlen);
708		871
		872	if (dirp && u && names)
709	for (;;)	873	for (;;)
710	{	874	{
		875	errno = 0;
711	errno = 0, readdir_r (dirp, &u.d, &entp);	876	readdir_r (dirp, &u->d, &entp);
712		877
713	if (!entp)	878	if (!entp)
714	break;	879	break;
715		880
716	name = entp->d_name;	881	name = entp->d_name;
717		882
718	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	883	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
719	{	884	{
720	int len = strlen (name) + 1;	885	int len = strlen (name) + 1;
721		886
722	res++;	887	res++;
723		888
724	while (memofs + len > memlen)	889	while (memofs + len > memlen)
725	{	890	{
726	memlen *= 2;	891	memlen *= 2;
		892	LOCK (wrklock);
727	names = realloc (names, memlen);	893	req->data2ptr = names = realloc (names, memlen);
		894	UNLOCK (wrklock);
		895
728	if (!names)	896	if (!names)
729	break;	897	break;
730	}	898	}
731		899
732	memcpy (names + memofs, name, len);	900	memcpy (names + memofs, name, len);
733	memofs += len;	901	memofs += len;
734	}	902	}
735	}	903	}
736		904
737	errorno = errno;
738	closedir (dirp);
739
740	if (errorno)	905	if (errno)
741	{
742	free (names);
743	errno = errorno;
744	res = -1;	906	res = -1;
745	}	907
746		908	req->result = res;
747	namesp = (void )names;
748	return res;
749	}	909	}
750		910
751	/*****************************************************************************/	911	/*****************************************************************************/
752		912
753	static void aio_proc (void thr_arg)	913	static void aio_proc (void thr_arg)
754	{	914	{
755	aio_req req;	915	aio_req req;
756	int type;	916	int type;
		917	worker self = (worker )thr_arg;
757		918
758	do	919	do
759	{	920	{
760	pthread_mutex_lock (&reqlock);	921	LOCK (reqlock);
761		922
762	for (;;)	923	for (;;)
763	{	924	{
764	req = reqs;	925	self->req = req = reqq_shift (&req_queue);
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771		926
772	if (req)	927	if (req)
773	break;	928	break;
774		929
775	pthread_cond_wait (&reqwait, &reqlock);	930	pthread_cond_wait (&reqwait, &reqlock);
776	}	931	}
777		932
778	pthread_mutex_unlock (&reqlock);	933	UNLOCK (reqlock);
779		934
780	errno = 0; /* strictly unnecessary */	935	errno = 0; /* strictly unnecessary */
		936	type = req->type; /* remember type for QUIT check */
781		937
782	if (!req->cancelled)	938	if (!(req->flags & FLAG_CANCELLED))
783	switch (req->type)	939	switch (type)
784	{	940	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
787		943
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
789	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
790		946
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
792	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
793	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
794		950
…		…
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
802		958
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;	960	case REQ_FSYNC: req->result = fsync (req->fd); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	961	case REQ_READDIR: scandir_ (req, self); break;
806		962
807	case REQ_SLEEP:	963	case REQ_BUSY:
808	{	964	{
809	struct timeval tv;	965	struct timeval tv;
810		966
811	tv.tv_sec = req->fd;	967	tv.tv_sec = req->fd;
812	tv.tv_usec = req->fd2;	968	tv.tv_usec = req->fd2;
813		969
814	req->result = select (0, 0, 0, 0, &tv);	970	req->result = select (0, 0, 0, 0, &tv);
815	}	971	}
816		972
		973	case REQ_GROUP:
		974	case REQ_NOP:
817	case REQ_QUIT:	975	case REQ_QUIT:
818	break;	976	break;
819		977
820	default:	978	default:
821	req->result = ENOSYS;	979	req->result = ENOSYS;
822	break;	980	break;
823	}	981	}
824		982
825	req->errorno = errno;	983	req->errorno = errno;
826		984
827	pthread_mutex_lock (&reslock);	985	LOCK (reslock);
828		986
829	req->next = 0;	987	if (!reqq_push (&res_queue, req))
830
831	if (rese)
832	{
833	rese->next = req;
834	rese = req;
835	}
836	else
837	{
838	rese = ress = req;
839
840	/* write a dummy byte to the pipe so fh becomes ready */	988	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);	989	write (respipe [1], &respipe, 1);
842	}
843		990
844	pthread_mutex_unlock (&reslock);	991	self->req = 0;
		992	worker_clear (self);
		993
		994	UNLOCK (reslock);
845	}	995	}
846	while (type != REQ_QUIT);	996	while (type != REQ_QUIT);
847		997
		998	LOCK (wrklock);
		999	worker_free (self);
		1000	UNLOCK (wrklock);
		1001
848	return 0;	1002	return 0;
849	}	1003	}
850		1004
851	/*****************************************************************************/	1005	/*****************************************************************************/
852		1006
853	static void atfork_prepare (void)	1007	static void atfork_prepare (void)
854	{	1008	{
855	pthread_mutex_lock (&reqlock);	1009	LOCK (wrklock);
856	pthread_mutex_lock (&reslock);	1010	LOCK (reqlock);
		1011	LOCK (reslock);
857	#if !HAVE_PREADWRITE	1012	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);	1013	LOCK (preadwritelock);
859	#endif	1014	#endif
860	#if !HAVE_READDIR_R	1015	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);	1016	LOCK (readdirlock);
862	#endif	1017	#endif
863	}	1018	}
864		1019
865	static void atfork_parent (void)	1020	static void atfork_parent (void)
866	{	1021	{
867	#if !HAVE_READDIR_R	1022	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);	1023	UNLOCK (readdirlock);
869	#endif	1024	#endif
870	#if !HAVE_PREADWRITE	1025	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);	1026	UNLOCK (preadwritelock);
872	#endif	1027	#endif
873	pthread_mutex_unlock (&reslock);	1028	UNLOCK (reslock);
874	pthread_mutex_unlock (&reqlock);	1029	UNLOCK (reqlock);
		1030	UNLOCK (wrklock);
875	}	1031	}
876		1032
877	static void atfork_child (void)	1033	static void atfork_child (void)
878	{	1034	{
879	aio_req prv;	1035	aio_req prv;
880		1036
		1037	while (prv = reqq_shift (&req_queue))
		1038	req_free (prv);
		1039
		1040	while (prv = reqq_shift (&res_queue))
		1041	req_free (prv);
		1042
		1043	while (wrk_first.next != &wrk_first)
		1044	{
		1045	worker *wrk = wrk_first.next;
		1046
		1047	if (wrk->req)
		1048	req_free (wrk->req);
		1049
		1050	worker_clear (wrk);
		1051	worker_free (wrk);
		1052	}
		1053
881	started = 0;	1054	started = 0;
882		1055	nreqs = 0;
883	while (reqs)
884	{
885	prv = reqs;
886	reqs = prv->next;
887	req_free (prv);
888	}
889
890	reqs = reqe = 0;
891
892	while (ress)
893	{
894	prv = ress;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900		1056
901	close (respipe [0]);	1057	close (respipe [0]);
902	close (respipe [1]);	1058	close (respipe [1]);
903	create_pipe ();	1059	create_pipe ();
904		1060
905	atfork_parent ();	1061	atfork_parent ();
906	}	1062	}
907		1063
908	#define dREQ \	1064	#define dREQ \
909	aio_req req; \	1065	aio_req req; \
		1066	int req_pri = next_pri; \
		1067	next_pri = DEFAULT_PRI + PRI_BIAS; \
910	\	1068	\
911	if (SvOK (callback) && !SvROK (callback)) \	1069	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \	1070	croak ("callback must be undef or of reference type"); \
913	\	1071	\
914	Newz (0, req, 1, aio_cb); \	1072	Newz (0, req, 1, aio_cb); \
915	if (!req) \	1073	if (!req) \
916	croak ("out of memory during aio_req allocation"); \	1074	croak ("out of memory during aio_req allocation"); \
917	\	1075	\
918	req->callback = newSVsv (callback)	1076	req->callback = newSVsv (callback); \
		1077	req->pri = req_pri
919		1078
920	#define REQ_SEND \	1079	#define REQ_SEND \
921	req_send (req); \	1080	req_send (req); \
922	\	1081	\
923	if (GIMME_V != G_VOID) \	1082	if (GIMME_V != G_VOID) \
…		…
945		1104
946	void	1105	void
947	max_parallel (nthreads)	1106	max_parallel (nthreads)
948	int nthreads	1107	int nthreads
949	PROTOTYPE: $	1108	PROTOTYPE: $
950
951	int
952	max_outstanding (nreqs)
953	int nreqs
954	PROTOTYPE: $
955	CODE:
956	RETVAL = max_outstanding;
957	max_outstanding = nreqs;
958		1109
959	void	1110	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
961	SV * pathname	1112	SV * pathname
962	int flags	1113	int flags
…		…
1177		1328
1178	REQ_SEND;	1329	REQ_SEND;
1179	}	1330	}
1180		1331
1181	void	1332	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1333	aio_busy (delay,callback=&PL_sv_undef)
1183	double delay	1334	double delay
1184	SV * callback	1335	SV * callback
1185	PPCODE:	1336	PPCODE:
1186	{	1337	{
1187	dREQ;	1338	dREQ;
1188		1339
1189	req->type = REQ_SLEEP;	1340	req->type = REQ_BUSY;
1190	req->fd = delay < 0. ? 0 : delay;	1341	req->fd = delay < 0. ? 0 : delay;
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1192		1343
1193	REQ_SEND;	1344	REQ_SEND;
1194	}	1345	}
…		…
1198	SV * callback	1349	SV * callback
1199	PROTOTYPE: ;$	1350	PROTOTYPE: ;$
1200	PPCODE:	1351	PPCODE:
1201	{	1352	{
1202	dREQ;	1353	dREQ;
		1354
1203	req->type = REQ_GROUP;	1355	req->type = REQ_GROUP;
1204	req_send (req);	1356	req_send (req);
		1357
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1206	}	1359	}
		1360
		1361	void
		1362	aio_nop (callback=&PL_sv_undef)
		1363	SV * callback
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->type = REQ_NOP;
		1369
		1370	REQ_SEND;
		1371	}
		1372
		1373	void
		1374	aioreq_pri (int pri = DEFAULT_PRI)
		1375	CODE:
		1376	if (pri < PRI_MIN) pri = PRI_MIN;
		1377	if (pri > PRI_MAX) pri = PRI_MAX;
		1378	next_pri = pri + PRI_BIAS;
		1379
		1380	void
		1381	aioreq_nice (int nice = 0)
		1382	CODE:
		1383	nice = next_pri - nice;
		1384	if (nice < PRI_MIN) nice = PRI_MIN;
		1385	if (nice > PRI_MAX) nice = PRI_MAX;
		1386	next_pri = nice + PRI_BIAS;
1207		1387
1208	void	1388	void
1209	flush ()	1389	flush ()
1210	PROTOTYPE:	1390	PROTOTYPE:
1211	CODE:	1391	CODE:
…		…
1260		1440
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262		1442
1263	void	1443	void
1264	cancel (aio_req_ornot req)	1444	cancel (aio_req_ornot req)
1265	PROTOTYPE:
1266	CODE:	1445	CODE:
1267	req_cancel (req);	1446	req_cancel (req);
1268		1447
		1448	void
		1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1450	CODE:
		1451	SvREFCNT_dec (req->callback);
		1452	req->callback = newSVsv (callback);
		1453
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1455
1271	void	1456	void
1272	add (aio_req grp, ...)	1457	add (aio_req grp, ...)
1273	PPCODE:	1458	PPCODE:
1274	{	1459	{
1275	int i;	1460	int i;
		1461	aio_req req;
1276		1462
1277	if (grp->fd == 2)	1463	if (grp->fd == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		1465
1280	for (i = 1; i < items; ++i )	1466	for (i = 1; i < items; ++i )
1281	{	1467	{
1282	if (GIMME_V != G_VOID)	1468	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1470
1285	aio_req req = SvAIO_REQ (ST (i));	1471	req = SvAIO_REQ (ST (i));
1286		1472
1287	if (req)	1473	if (req)
1288	{	1474	{
1289	++grp->length;	1475	++grp->length;
1290	req->grp = grp;	1476	req->grp = grp;
…		…
1299	}	1485	}
1300	}	1486	}
1301	}	1487	}
1302		1488
1303	void	1489	void
		1490	cancel_subs (aio_req_ornot req)
		1491	CODE:
		1492	req_cancel_subs (req);
		1493
		1494	void
1304	result (aio_req grp, ...)	1495	result (aio_req grp, ...)
1305	CODE:	1496	CODE:
1306	{	1497	{
1307	int i;	1498	int i;
1308	AV *av = newAV ();	1499	AV *av = newAV ();
1309		1500
1310	for (i = 1; i < items; ++i )	1501	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));	1502	av_push (av, newSVsv (ST (i)));
1312		1503
1313	SvREFCNT_dec (grp->data);	1504	SvREFCNT_dec (grp->data);
1314	grp->data = (SV *)av;	1505	grp->data = (SV *)av;
1315	}	1506	}
1316		1507
1317	void	1508	void
1318	feeder_limit (aio_req grp, int limit)	1509	limit (aio_req grp, int limit)
1319	CODE:	1510	CODE:
1320	grp->fd2 = limit;	1511	grp->fd2 = limit;
1321	aio_grp_feed (grp);	1512	aio_grp_feed (grp);
1322		1513
1323	void	1514	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1515	feed (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:	1516	CODE:
1326	{	1517	{
1327	SvREFCNT_dec (grp->fh2);	1518	SvREFCNT_dec (grp->fh2);
1328	grp->fh2 = newSVsv (callback);	1519	grp->fh2 = newSVsv (callback);
1329		1520

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs. Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC