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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 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"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
13	#include <errno.h>	21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
14	#include <sys/types.h>	24	#include <sys/types.h>
15	#include <sys/stat.h>	25	#include <sys/stat.h>
16	#include <limits.h>	26	#include <limits.h>
17	#include <unistd.h>	27	#include <unistd.h>
18	#include <fcntl.h>	28	#include <fcntl.h>
…		…
37	/* used for struct dirent, AIX doesn't provide it */	47	/* used for struct dirent, AIX doesn't provide it */
38	#ifndef NAME_MAX	48	#ifndef NAME_MAX
39	# define NAME_MAX 4096	49	# define NAME_MAX 4096
40	#endif	50	#endif
41		51
		52	#ifndef PTHREAD_STACK_MIN
		53	/* care for broken platforms, e.g. windows */
		54	# define PTHREAD_STACK_MIN 16384
		55	#endif
		56
42	#if __ia64	57	#if __ia64
43	# define STACKSIZE 65536	58	# define STACKSIZE 65536
		59	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		60	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	61	#else
45	# define STACKSIZE 8192	62	# define STACKSIZE 16384
46	#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;
47		75
48	enum {	76	enum {
49	REQ_QUIT,	77	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	78	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	82	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	84	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	85	REQ_LINK, REQ_SYMLINK,
58	REQ_GROUP,	86	REQ_GROUP, REQ_NOP,
		87	REQ_BUSY,
59	};	88	};
60		89
61	#define AIO_REQ_KLASS "IO::AIO::REQ"	90	#define AIO_REQ_KLASS "IO::AIO::REQ"
62	#define AIO_GRP_KLASS "IO::AIO::GRP"	91	#define AIO_GRP_KLASS "IO::AIO::GRP"
63		92
64	typedef struct aio_cb	93	typedef struct aio_cb
65	{	94	{
66	struct aio_cb grp, grp_prev, *grp_next;
67
68	struct aio_cb *volatile next;	95	struct aio_cb *volatile next;
69
70	SV self; / the perl counterpart of this request, if any */
71		96
72	SV data, callback;	97	SV data, callback;
73	SV fh, fh2;	98	SV fh, fh2;
74	void dataptr, data2ptr;	99	void dataptr, data2ptr;
75	Stat_t *statdata;	100	Stat_t *statdata;
76	off_t offset;	101	off_t offset;
77	size_t length;	102	size_t length;
78	ssize_t result;	103	ssize_t result;
79		104
		105	STRLEN dataoffset;
80	int type;	106	int type;
81	int fd, fd2;	107	int fd, fd2;
82	int errorno;	108	int errorno;
83	STRLEN dataoffset;
84	mode_t mode; /* open */	109	mode_t mode; /* open */
		110
85	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;
86	} aio_cb;	116	} aio_cb;
		117
		118	enum {
		119	FLAG_CANCELLED = 0x01,
		120	};
87		121
88	typedef aio_cb *aio_req;	122	typedef aio_cb *aio_req;
89	typedef aio_cb *aio_req_ornot;	123	typedef aio_cb *aio_req_ornot;
90	typedef aio_cb *aio_group;	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;
91		135
92	static int started, wanted;	136	static int started, wanted;
93	static volatile int nreqs;	137	static volatile int nreqs;
94	static int max_outstanding = 1<<30;
95	static int respipe [2];	138	static int respipe [2];
96		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
97	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
98	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
99	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
100		192
101	static volatile aio_req reqs, reqe; /* queue start, queue end */	193	/*
102	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;
		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 ();
		248	static void req_invoke (aio_req req);
		249	static void req_free (aio_req req);
		250	static void req_cancel (aio_req req);
103		251
104	/* must be called at most once */	252	/* must be called at most once */
105	static SV req_sv (aio_req req, const char klass)	253	static SV req_sv (aio_req req, const char klass)
106	{	254	{
		255	if (!req->self)
		256	{
107	req->self = (SV *)newHV ();	257	req->self = (SV *)newHV ();
108	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		259	}
109		260
110	return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));	261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
111	}	262	}
112		263
113	static aio_req SvAIO_REQ (SV sv, const char klass)	264	static aio_req SvAIO_REQ (SV *sv)
114	{	265	{
		266	MAGIC *mg;
		267
115	if (!sv_derived_from (sv, klass) \|\| !SvROK (sv))	268	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
116	croak ("object of class %s expected", klass);	269	croak ("object of class " AIO_REQ_KLASS " expected");
117		270
118	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119		272
120	return mg ? (aio_req)mg->mg_ptr : 0;	273	return mg ? (aio_req)mg->mg_ptr : 0;
		274	}
		275
		276	static void aio_grp_feed (aio_req grp)
		277	{
		278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		279	{
		280	int old_len = grp->length;
		281
		282	if (grp->fh2 && SvOK (grp->fh2))
		283	{
		284	dSP;
		285
		286	ENTER;
		287	SAVETMPS;
		288	PUSHMARK (SP);
		289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		290	PUTBACK;
		291	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		292	SPAGAIN;
		293	FREETMPS;
		294	LEAVE;
		295	}
		296
		297	/* stop if no progress has been made */
		298	if (old_len == grp->length)
		299	{
		300	SvREFCNT_dec (grp->fh2);
		301	grp->fh2 = 0;
		302	break;
		303	}
		304	}
		305	}
		306
		307	static void aio_grp_dec (aio_req grp)
		308	{
		309	--grp->length;
		310
		311	/* call feeder, if applicable */
		312	aio_grp_feed (grp);
		313
		314	/* finish, if done */
		315	if (!grp->length && grp->fd)
		316	{
		317	req_invoke (grp);
		318	req_free (grp);
		319	}
		320	}
		321
		322	static void poll_wait ()
		323	{
		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
		340	FD_ZERO(&rfd);
		341	FD_SET(respipe [0], &rfd);
		342
		343	select (respipe [0] + 1, &rfd, 0, 0, 0);
		344	}
		345	}
		346
		347	static void req_invoke (aio_req req)
		348	{
		349	dSP;
		350
		351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		352	{
		353	errno = req->errorno;
		354
		355	ENTER;
		356	SAVETMPS;
		357	PUSHMARK (SP);
		358	EXTEND (SP, 1);
		359
		360	switch (req->type)
		361	{
		362	case REQ_READDIR:
		363	{
		364	SV *rv = &PL_sv_undef;
		365
		366	if (req->result >= 0)
		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	{
		376	SV *sv = newSVpv (buf, 0);
		377
		378	av_store (av, i, sv);
		379	buf += SvCUR (sv) + 1;
		380	}
		381
		382	rv = sv_2mortal (newRV_noinc ((SV *)av));
		383	}
		384
		385	PUSHs (rv);
		386	}
		387	break;
		388
		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;
		427	}
		428
		429
		430	PUTBACK;
		431	call_sv (req->callback, G_VOID \| G_EVAL);
		432	SPAGAIN;
		433
		434	FREETMPS;
		435	LEAVE;
		436	}
		437
		438	if (req->grp)
		439	{
		440	aio_req grp = req->grp;
		441
		442	/* unlink request */
		443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		445
		446	if (grp->grp_first == req)
		447	grp->grp_first = req->grp_next;
		448
		449	aio_grp_dec (grp);
		450	}
		451
		452	if (SvTRUE (ERRSV))
		453	{
		454	req_free (req);
		455	croak (0);
		456	}
121	}	457	}
122		458
123	static void req_free (aio_req req)	459	static void req_free (aio_req req)
124	{	460	{
125	if (req->self)	461	if (req->self)
126	{	462	{
127	sv_unmagic (req->self, PERL_MAGIC_ext);	463	sv_unmagic (req->self, PERL_MAGIC_ext);
128	SvREFCNT_dec (req->self);	464	SvREFCNT_dec (req->self);
129	}	465	}
130		466
131	if (req->data)
132	SvREFCNT_dec (req->data);	467	SvREFCNT_dec (req->data);
133
134	if (req->fh)
135	SvREFCNT_dec (req->fh);	468	SvREFCNT_dec (req->fh);
136
137	if (req->fh2)
138	SvREFCNT_dec (req->fh2);	469	SvREFCNT_dec (req->fh2);
139
140	if (req->statdata)
141	Safefree (req->statdata);
142
143	if (req->callback)
144	SvREFCNT_dec (req->callback);	470	SvREFCNT_dec (req->callback);
		471	Safefree (req->statdata);
145		472
146	if (req->type == REQ_READDIR && req->result >= 0)	473	if (req->type == REQ_READDIR)
147	free (req->data2ptr);	474	free (req->data2ptr);
148		475
149	Safefree (req);	476	Safefree (req);
150	}	477	}
151		478
152	static void	479	static void req_cancel_subs (aio_req grp)
153	poll_wait ()
154	{	480	{
155	if (nreqs && !ress)	481	aio_req sub;
156	{
157	fd_set rfd;
158	FD_ZERO(&rfd);
159	FD_SET(respipe [0], &rfd);
160		482
161	select (respipe [0] + 1, &rfd, 0, 0, 0);	483	if (grp->type != REQ_GROUP)
162	}	484	return;
163	}
164		485
165	static int	486	SvREFCNT_dec (grp->fh2);
166	poll_cb ()	487	grp->fh2 = 0;
		488
		489	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		490	req_cancel (sub);
		491	}
		492
		493	static void req_cancel (aio_req req)
		494	{
		495	req->flags \|= FLAG_CANCELLED;
		496
		497	req_cancel_subs (req);
		498	}
		499
		500	static int poll_cb ()
167	{	501	{
168	dSP;	502	dSP;
169	int count = 0;	503	int count = 0;
170	int do_croak = 0;	504	int do_croak = 0;
171	aio_req req;	505	aio_req req;
172		506
173	for (;;)	507	for (;;)
174	{	508	{
175	pthread_mutex_lock (&reslock);	509	LOCK (reslock);
176	req = ress;	510	req = reqq_shift (&res_queue);
177		511
178	if (req)	512	if (req)
179	{	513	{
180	ress = req->next;
181
182	if (!ress)	514	if (!res_queue.size)
183	{	515	{
184	/* read any signals sent by the worker threads */	516	/* read any signals sent by the worker threads */
185	char buf [32];	517	char buf [32];
186	while (read (respipe [0], buf, 32) == 32)	518	while (read (respipe [0], buf, 32) == 32)
187	;	519	;
188
189	rese = 0;
190	}	520	}
191	}	521	}
192		522
193	pthread_mutex_unlock (&reslock);	523	UNLOCK (reslock);
194		524
195	if (!req)	525	if (!req)
196	break;	526	break;
197		527
198	nreqs--;	528	--nreqs;
199		529
200	if (req->type == REQ_QUIT)	530	if (req->type == REQ_QUIT)
201	started--;	531	started--;
		532	else if (req->type == REQ_GROUP && req->length)
		533	{
		534	req->fd = 1; /* mark request as delayed */
		535	continue;
		536	}
202	else	537	else
203	{	538	{
204	int errorno = errno;
205	errno = req->errorno;
206
207	if (req->type == REQ_READ)	539	if (req->type == REQ_READ)
208	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
209		541
210	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	542	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
211	SvREADONLY_off (req->data);	543	SvREADONLY_off (req->data);
…		…
215	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
216	PL_laststatval = req->result;	548	PL_laststatval = req->result;
217	PL_statcache = *(req->statdata);	549	PL_statcache = *(req->statdata);
218	}	550	}
219		551
220	ENTER;	552	req_invoke (req);
221	PUSHMARK (SP);
222		553
223	if (req->type == REQ_READDIR)
224	{
225	SV *rv = &PL_sv_undef;
226
227	if (req->result >= 0)
228	{
229	char *buf = req->data2ptr;
230	AV *av = newAV ();
231
232	while (req->result)
233	{
234	SV *sv = newSVpv (buf, 0);
235
236	av_push (av, sv);
237	buf += SvCUR (sv) + 1;
238	req->result--;
239	}
240
241	rv = sv_2mortal (newRV_noinc ((SV *)av));
242	}
243
244	XPUSHs (rv);
245	}
246	else
247	{
248	XPUSHs (sv_2mortal (newSViv (req->result)));
249
250	if (req->type == REQ_OPEN)
251	{
252	/* convert fd to fh */
253	SV *fh;
254
255	PUTBACK;
256	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
257	SPAGAIN;
258
259	fh = SvREFCNT_inc (POPs);
260
261	PUSHMARK (SP);
262	XPUSHs (sv_2mortal (fh));
263	}
264	}
265
266	if (SvOK (req->callback) && !req->cancelled)
267	{
268	PUTBACK;
269	call_sv (req->callback, G_VOID \| G_EVAL);
270	SPAGAIN;
271
272	if (SvTRUE (ERRSV))
273	{
274	req_free (req);
275	croak (0);
276	}
277	}
278
279	LEAVE;
280
281	errno = errorno;
282	count++;	554	count++;
283	}	555	}
284		556
285	req_free (req);	557	req_free (req);
286	}	558	}
…		…
288	return count;	560	return count;
289	}	561	}
290		562
291	static void aio_proc(void arg);	563	static void aio_proc(void arg);
292		564
293	static void
294	start_thread (void)	565	static void start_thread (void)
295	{	566	{
296	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
297	pthread_t tid;
298	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");
299		574
300	pthread_attr_init (&attr);	575	pthread_attr_init (&attr);
301	pthread_attr_setstacksize (&attr, STACKSIZE);	576	pthread_attr_setstacksize (&attr, STACKSIZE);
302	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
303		578
304	sigfillset (&fullsigset);	579	sigfillset (&fullsigset);
		580
		581	LOCK (wrklock);
305	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
306		583
307	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;
308	started++;	590	started++;
		591	}
		592	else
		593	free (wrk);
309		594
310	sigprocmask (SIG_SETMASK, &oldsigset, 0);	595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		596	UNLOCK (wrklock);
311	}	597	}
312		598
313	static void
314	req_send (aio_req req)	599	static void req_send (aio_req req)
315	{	600	{
316	while (started < wanted && nreqs >= started)	601	while (started < wanted && nreqs >= started)
317	start_thread ();	602	start_thread ();
318		603
319	nreqs++;	604	++nreqs;
320		605
321	pthread_mutex_lock (&reqlock);	606	LOCK (reqlock);
322		607	reqq_push (&req_queue, req);
323	req->next = 0;
324
325	if (reqe)
326	{
327	reqe->next = req;
328	reqe = req;
329	}
330	else
331	reqe = reqs = req;
332
333	pthread_cond_signal (&reqwait);	608	pthread_cond_signal (&reqwait);
334	pthread_mutex_unlock (&reqlock);	609	UNLOCK (reqlock);
335
336	if (nreqs > max_outstanding)
337	for (;;)
338	{
339	poll_cb ();
340
341	if (nreqs <= max_outstanding)
342	break;
343
344	poll_wait ();
345	}
346	}	610	}
347		611
348	static void	612	static void end_thread (void)
349	end_thread (void)
350	{	613	{
351	aio_req req;	614	aio_req req;
		615
352	Newz (0, req, 1, aio_cb);	616	Newz (0, req, 1, aio_cb);
		617
353	req->type = REQ_QUIT;	618	req->type = REQ_QUIT;
		619	req->pri = PRI_MAX + PRI_BIAS;
354		620
355	req_send (req);	621	req_send (req);
356	}	622	}
357		623
358	static void min_parallel (int nthreads)	624	static void min_parallel (int nthreads)
…		…
405	* normal read/write by using a mutex. slows down execution a lot,	671	* normal read/write by using a mutex. slows down execution a lot,
406	* but that's your problem, not mine.	672	* but that's your problem, not mine.
407	*/	673	*/
408	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
409		675
410	static ssize_t	676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
411	pread (int fd, void *buf, size_t count, off_t offset)
412	{	677	{
413	ssize_t res;	678	ssize_t res;
414	off_t ooffset;	679	off_t ooffset;
415		680
416	pthread_mutex_lock (&preadwritelock);	681	LOCK (preadwritelock);
417	ooffset = lseek (fd, 0, SEEK_CUR);	682	ooffset = lseek (fd, 0, SEEK_CUR);
418	lseek (fd, offset, SEEK_SET);	683	lseek (fd, offset, SEEK_SET);
419	res = read (fd, buf, count);	684	res = read (fd, buf, count);
420	lseek (fd, ooffset, SEEK_SET);	685	lseek (fd, ooffset, SEEK_SET);
421	pthread_mutex_unlock (&preadwritelock);	686	UNLOCK (preadwritelock);
422		687
423	return res;	688	return res;
424	}	689	}
425		690
426	static ssize_t
427	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)
428	{	692	{
429	ssize_t res;	693	ssize_t res;
430	off_t ooffset;	694	off_t ooffset;
431		695
432	pthread_mutex_lock (&preadwritelock);	696	LOCK (preadwritelock);
433	ooffset = lseek (fd, 0, SEEK_CUR);	697	ooffset = lseek (fd, 0, SEEK_CUR);
434	lseek (fd, offset, SEEK_SET);	698	lseek (fd, offset, SEEK_SET);
435	res = write (fd, buf, count);	699	res = write (fd, buf, count);
436	lseek (fd, offset, SEEK_SET);	700	lseek (fd, offset, SEEK_SET);
437	pthread_mutex_unlock (&preadwritelock);	701	UNLOCK (preadwritelock);
438		702
439	return res;	703	return res;
440	}	704	}
441	#endif	705	#endif
442		706
443	#if !HAVE_FDATASYNC	707	#if !HAVE_FDATASYNC
444	# define fdatasync fsync	708	# define fdatasync fsync
445	#endif	709	#endif
446		710
447	#if !HAVE_READAHEAD	711	#if !HAVE_READAHEAD
448	# define readahead aio_readahead	712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
449		713
450	static ssize_t	714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
451	readahead (int fd, off_t offset, size_t count)
452	{	715	{
453	char readahead_buf[4096];	716	dBUF;
454		717
455	while (count > 0)	718	while (count > 0)
456	{	719	{
457	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
458		721
459	pread (fd, readahead_buf, len, offset);	722	pread (fd, aio_buf, len, offset);
460	offset += len;	723	offset += len;
461	count -= len;	724	count -= len;
462	}	725	}
463		726
464	errno = 0;	727	errno = 0;
465	}	728	}
		729
466	#endif	730	#endif
467		731
468	#if !HAVE_READDIR_R	732	#if !HAVE_READDIR_R
469	# define readdir_r aio_readdir_r	733	# define readdir_r aio_readdir_r
470		734
471	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472		736
473	static int
474	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	737	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
475	{	738	{
476	struct dirent *e;	739	struct dirent *e;
477	int errorno;	740	int errorno;
478		741
479	pthread_mutex_lock (&readdirlock);	742	LOCK (readdirlock);
480		743
481	e = readdir (dirp);	744	e = readdir (dirp);
482	errorno = errno;	745	errorno = errno;
483		746
484	if (e)	747	if (e)
…		…
487	strcpy (ent->d_name, e->d_name);	750	strcpy (ent->d_name, e->d_name);
488	}	751	}
489	else	752	else
490	*res = 0;	753	*res = 0;
491		754
492	pthread_mutex_unlock (&readdirlock);	755	UNLOCK (readdirlock);
493		756
494	errno = errorno;	757	errno = errorno;
495	return e ? 0 : -1;	758	return e ? 0 : -1;
496	}	759	}
497	#endif	760	#endif
498		761
499	/* sendfile always needs emulation */	762	/* sendfile always needs emulation */
500	static ssize_t
501	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)
502	{	764	{
503	ssize_t res;	765	ssize_t res;
504		766
505	if (!count)	767	if (!count)
506	return 0;	768	return 0;
…		…
555	#endif	817	#endif
556	)	818	)
557	)	819	)
558	{	820	{
559	/* emulate sendfile. this is a major pain in the ass */	821	/* emulate sendfile. this is a major pain in the ass */
560	char buf[4096];	822	dBUF;
		823
561	res = 0;	824	res = 0;
562		825
563	while (count)	826	while (count)
564	{	827	{
565	ssize_t cnt;	828	ssize_t cnt;
566		829
567	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
568		831
569	if (cnt <= 0)	832	if (cnt <= 0)
570	{	833	{
571	if (cnt && !res) res = -1;	834	if (cnt && !res) res = -1;
572	break;	835	break;
573	}	836	}
574		837
575	cnt = write (ofd, buf, cnt);	838	cnt = write (ofd, aio_buf, cnt);
576		839
577	if (cnt <= 0)	840	if (cnt <= 0)
578	{	841	{
579	if (cnt && !res) res = -1;	842	if (cnt && !res) res = -1;
580	break;	843	break;
…		…
588		851
589	return res;	852	return res;
590	}	853	}
591		854
592	/* read a full directory */	855	/* read a full directory */
593	static int	856	static void scandir_ (aio_req req, worker *self)
594	scandir_ (const char path, void *namesp)
595	{	857	{
596	DIR *dirp = opendir (path);	858	DIR *dirp;
597	union	859	union
598	{	860	{
599	struct dirent d;	861	struct dirent d;
600	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601	} u;	863	} *u;
602	struct dirent *entp;	864	struct dirent *entp;
603	char name, names;	865	char name, names;
604	int memlen = 4096;	866	int memlen = 4096;
605	int memofs = 0;	867	int memofs = 0;
606	int res = 0;	868	int res = 0;
607	int errorno;	869	int errorno;
608		870
609	if (!dirp)	871	LOCK (wrklock);
610	return -1;	872	self->dirp = dirp = opendir (req->dataptr);
		873	self->dbuf = u = malloc (sizeof (*u));
		874	UNLOCK (wrklock);
611		875
612	names = malloc (memlen);	876	req->data2ptr = names = malloc (memlen);
613		877
		878	if (dirp && u && names)
614	for (;;)	879	for (;;)
615	{	880	{
		881	errno = 0;
616	errno = 0, readdir_r (dirp, &u.d, &entp);	882	readdir_r (dirp, &u->d, &entp);
617		883
618	if (!entp)	884	if (!entp)
619	break;	885	break;
620		886
621	name = entp->d_name;	887	name = entp->d_name;
622		888
623	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	889	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
624	{	890	{
625	int len = strlen (name) + 1;	891	int len = strlen (name) + 1;
626		892
627	res++;	893	res++;
628		894
629	while (memofs + len > memlen)	895	while (memofs + len > memlen)
630	{	896	{
631	memlen *= 2;	897	memlen *= 2;
		898	LOCK (wrklock);
632	names = realloc (names, memlen);	899	req->data2ptr = names = realloc (names, memlen);
		900	UNLOCK (wrklock);
		901
633	if (!names)	902	if (!names)
634	break;	903	break;
635	}	904	}
636		905
637	memcpy (names + memofs, name, len);	906	memcpy (names + memofs, name, len);
638	memofs += len;	907	memofs += len;
639	}	908	}
640	}	909	}
641		910
642	errorno = errno;
643	closedir (dirp);
644
645	if (errorno)	911	if (errno)
646	{
647	free (names);
648	errno = errorno;
649	res = -1;	912	res = -1;
650	}	913
651		914	req->result = res;
652	namesp = (void )names;
653	return res;
654	}	915	}
655		916
656	/*****************************************************************************/	917	/*****************************************************************************/
657		918
658	static void *
659	aio_proc (void *thr_arg)	919	static void aio_proc (void thr_arg)
660	{	920	{
661	aio_req req;	921	aio_req req;
662	int type;	922	int type;
		923	worker self = (worker )thr_arg;
663		924
664	do	925	do
665	{	926	{
666	pthread_mutex_lock (&reqlock);	927	LOCK (reqlock);
667		928
668	for (;;)	929	for (;;)
669	{	930	{
670	req = reqs;	931	self->req = req = reqq_shift (&req_queue);
671
672	if (reqs)
673	{
674	reqs = reqs->next;
675	if (!reqs) reqe = 0;
676	}
677		932
678	if (req)	933	if (req)
679	break;	934	break;
680		935
681	pthread_cond_wait (&reqwait, &reqlock);	936	pthread_cond_wait (&reqwait, &reqlock);
682	}	937	}
683		938
684	pthread_mutex_unlock (&reqlock);	939	UNLOCK (reqlock);
685		940
686	errno = 0; /* strictly unnecessary */	941	errno = 0; /* strictly unnecessary */
		942	type = req->type; /* remember type for QUIT check */
687		943
688	if (!req->cancelled)	944	if (!(req->flags & FLAG_CANCELLED))
689	switch (req->type)	945	switch (type)
690	{	946	{
691	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;
692	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;
693		949
694	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;
695	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;
696		952
697	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
698	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
699	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
700		956
…		…
706	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
707	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
708		964
709	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
710	case REQ_FSYNC: req->result = fsync (req->fd); break;	966	case REQ_FSYNC: req->result = fsync (req->fd); break;
711	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	967	case REQ_READDIR: scandir_ (req, self); break;
712		968
		969	case REQ_BUSY:
		970	{
		971	struct timeval tv;
		972
		973	tv.tv_sec = req->fd;
		974	tv.tv_usec = req->fd2;
		975
		976	req->result = select (0, 0, 0, 0, &tv);
		977	}
		978
		979	case REQ_GROUP:
		980	case REQ_NOP:
713	case REQ_QUIT:	981	case REQ_QUIT:
714	break;	982	break;
715		983
716	default:	984	default:
717	req->result = ENOSYS;	985	req->result = ENOSYS;
718	break;	986	break;
719	}	987	}
720		988
721	req->errorno = errno;	989	req->errorno = errno;
722		990
723	pthread_mutex_lock (&reslock);	991	LOCK (reslock);
724		992
725	req->next = 0;	993	if (!reqq_push (&res_queue, req))
726
727	if (rese)
728	{
729	rese->next = req;
730	rese = req;
731	}
732	else
733	{
734	rese = ress = req;
735
736	/* write a dummy byte to the pipe so fh becomes ready */	994	/* write a dummy byte to the pipe so fh becomes ready */
737	write (respipe [1], &respipe, 1);	995	write (respipe [1], &respipe, 1);
738	}
739		996
740	pthread_mutex_unlock (&reslock);	997	self->req = 0;
		998	worker_clear (self);
		999
		1000	UNLOCK (reslock);
741	}	1001	}
742	while (type != REQ_QUIT);	1002	while (type != REQ_QUIT);
743		1003
		1004	LOCK (wrklock);
		1005	worker_free (self);
		1006	UNLOCK (wrklock);
		1007
744	return 0;	1008	return 0;
745	}	1009	}
746		1010
747	/*****************************************************************************/	1011	/*****************************************************************************/
748		1012
749	static void atfork_prepare (void)	1013	static void atfork_prepare (void)
750	{	1014	{
751	pthread_mutex_lock (&reqlock);	1015	LOCK (wrklock);
752	pthread_mutex_lock (&reslock);	1016	LOCK (reqlock);
		1017	LOCK (reslock);
753	#if !HAVE_PREADWRITE	1018	#if !HAVE_PREADWRITE
754	pthread_mutex_lock (&preadwritelock);	1019	LOCK (preadwritelock);
755	#endif	1020	#endif
756	#if !HAVE_READDIR_R	1021	#if !HAVE_READDIR_R
757	pthread_mutex_lock (&readdirlock);	1022	LOCK (readdirlock);
758	#endif	1023	#endif
759	}	1024	}
760		1025
761	static void atfork_parent (void)	1026	static void atfork_parent (void)
762	{	1027	{
763	#if !HAVE_READDIR_R	1028	#if !HAVE_READDIR_R
764	pthread_mutex_unlock (&readdirlock);	1029	UNLOCK (readdirlock);
765	#endif	1030	#endif
766	#if !HAVE_PREADWRITE	1031	#if !HAVE_PREADWRITE
767	pthread_mutex_unlock (&preadwritelock);	1032	UNLOCK (preadwritelock);
768	#endif	1033	#endif
769	pthread_mutex_unlock (&reslock);	1034	UNLOCK (reslock);
770	pthread_mutex_unlock (&reqlock);	1035	UNLOCK (reqlock);
		1036	UNLOCK (wrklock);
771	}	1037	}
772		1038
773	static void atfork_child (void)	1039	static void atfork_child (void)
774	{	1040	{
775	aio_req prv;	1041	aio_req prv;
776		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
777	started = 0;	1060	started = 0;
778		1061	nreqs = 0;
779	while (reqs)
780	{
781	prv = reqs;
782	reqs = prv->next;
783	req_free (prv);
784	}
785
786	reqs = reqe = 0;
787
788	while (ress)
789	{
790	prv = ress;
791	ress = prv->next;
792	req_free (prv);
793	}
794
795	ress = rese = 0;
796		1062
797	close (respipe [0]);	1063	close (respipe [0]);
798	close (respipe [1]);	1064	close (respipe [1]);
799	create_pipe ();	1065	create_pipe ();
800		1066
801	atfork_parent ();	1067	atfork_parent ();
802	}	1068	}
803		1069
804	#define dREQ \	1070	#define dREQ \
805	aio_req req; \	1071	aio_req req; \
		1072	int req_pri = next_pri; \
		1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
806	\	1074	\
807	if (SvOK (callback) && !SvROK (callback)) \	1075	if (SvOK (callback) && !SvROK (callback)) \
808	croak ("callback must be undef or of reference type"); \	1076	croak ("callback must be undef or of reference type"); \
809	\	1077	\
810	Newz (0, req, 1, aio_cb); \	1078	Newz (0, req, 1, aio_cb); \
811	if (!req) \	1079	if (!req) \
812	croak ("out of memory during aio_req allocation"); \	1080	croak ("out of memory during aio_req allocation"); \
813	\	1081	\
814	req->callback = newSVsv (callback)	1082	req->callback = newSVsv (callback); \
		1083	req->pri = req_pri
815		1084
816	#define REQ_SEND \	1085	#define REQ_SEND \
817	req_send (req); \	1086	req_send (req); \
818	\	1087	\
819	if (GIMME_V != G_VOID) \	1088	if (GIMME_V != G_VOID) \
…		…
841		1110
842	void	1111	void
843	max_parallel (nthreads)	1112	max_parallel (nthreads)
844	int nthreads	1113	int nthreads
845	PROTOTYPE: $	1114	PROTOTYPE: $
846
847	int
848	max_outstanding (nreqs)
849	int nreqs
850	PROTOTYPE: $
851	CODE:
852	RETVAL = max_outstanding;
853	max_outstanding = nreqs;
854		1115
855	void	1116	void
856	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
857	SV * pathname	1118	SV * pathname
858	int flags	1119	int flags
…		…
1073		1334
1074	REQ_SEND;	1335	REQ_SEND;
1075	}	1336	}
1076		1337
1077	void	1338	void
		1339	aio_busy (delay,callback=&PL_sv_undef)
		1340	double delay
		1341	SV * callback
		1342	PPCODE:
		1343	{
		1344	dREQ;
		1345
		1346	req->type = REQ_BUSY;
		1347	req->fd = delay < 0. ? 0 : delay;
		1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
1078	aio_group (callback=&PL_sv_undef)	1354	aio_group (callback=&PL_sv_undef)
1079	SV * callback	1355	SV * callback
1080	PROTOTYPE: ;&	1356	PROTOTYPE: ;$
1081	PPCODE:	1357	PPCODE:
1082	{	1358	{
1083	dREQ;	1359	dREQ;
		1360
1084	req->type = REQ_GROUP;	1361	req->type = REQ_GROUP;
		1362	req_send (req);
		1363
1085	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1086	}	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;
1087		1393
1088	void	1394	void
1089	flush ()	1395	flush ()
1090	PROTOTYPE:	1396	PROTOTYPE:
1091	CODE:	1397	CODE:
…		…
1134	CODE:	1440	CODE:
1135	RETVAL = nreqs;	1441	RETVAL = nreqs;
1136	OUTPUT:	1442	OUTPUT:
1137	RETVAL	1443	RETVAL
1138		1444
		1445	PROTOTYPES: DISABLE
		1446
1139	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140		1448
1141	void	1449	void
1142	cancel (aio_req_ornot req)	1450	cancel (aio_req_ornot req)
1143	PROTOTYPE:
1144	CODE:	1451	CODE:
1145	req->cancelled = 1;	1452	req_cancel (req);
1146		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
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1461
		1462	void
		1463	add (aio_req grp, ...)
		1464	PPCODE:
		1465	{
		1466	int i;
		1467	aio_req req;
		1468
		1469	if (grp->fd == 2)
		1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1471
		1472	for (i = 1; i < items; ++i )
		1473	{
		1474	if (GIMME_V != G_VOID)
		1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1476
		1477	req = SvAIO_REQ (ST (i));
		1478
		1479	if (req)
		1480	{
		1481	++grp->length;
		1482	req->grp = grp;
		1483
		1484	req->grp_prev = 0;
		1485	req->grp_next = grp->grp_first;
		1486
		1487	if (grp->grp_first)
		1488	grp->grp_first->grp_prev = req;
		1489
		1490	grp->grp_first = req;
		1491	}
		1492	}
		1493	}
		1494
		1495	void
		1496	cancel_subs (aio_req_ornot req)
		1497	CODE:
		1498	req_cancel_subs (req);
		1499
		1500	void
		1501	result (aio_req grp, ...)
		1502	CODE:
		1503	{
		1504	int i;
		1505	AV *av = newAV ();
		1506
		1507	for (i = 1; i < items; ++i )
		1508	av_push (av, newSVsv (ST (i)));
		1509
		1510	SvREFCNT_dec (grp->data);
		1511	grp->data = (SV *)av;
		1512	}
		1513
		1514	void
		1515	limit (aio_req grp, int limit)
		1516	CODE:
		1517	grp->fd2 = limit;
		1518	aio_grp_feed (grp);
		1519
		1520	void
		1521	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1522	CODE:
		1523	{
		1524	SvREFCNT_dec (grp->fh2);
		1525	grp->fh2 = newSVsv (callback);
		1526
		1527	if (grp->fd2 <= 0)
		1528	grp->fd2 = 2;
		1529
		1530	aio_grp_feed (grp);
		1531	}
		1532

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.44 by root, Sat Oct 21 23:20:29 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 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC