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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs.
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC

…		…
		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
7		12
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
		15	#include <pthread.h>
		16
		17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
10	#include <sys/types.h>	21	#include <sys/types.h>
11	#include <sys/stat.h>	22	#include <sys/stat.h>
12		23	#include <limits.h>
13	#include <unistd.h>	24	#include <unistd.h>
14	#include <fcntl.h>	25	#include <fcntl.h>
15	#include <signal.h>	26	#include <signal.h>
16	#include <sched.h>	27	#include <sched.h>
17		28
18	#include <pthread.h>	29	#if HAVE_SENDFILE
		30	# if __linux
		31	# include <sys/sendfile.h>
		32	# elif __freebsd
		33	# include <sys/socket.h>
		34	# include <sys/uio.h>
		35	# elif __hpux
		36	# include <sys/socket.h>
		37	# elif __solaris /* not yet */
		38	# include <sys/sendfile.h>
		39	# else
		40	# error sendfile support requested but not available
		41	# endif
		42	#endif
19		43
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	44	/* used for struct dirent, AIX doesn't provide it */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	45	#ifndef NAME_MAX
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	46	# define NAME_MAX 4096
		47	#endif
23		48
24	#if __ia64	49	#if __ia64
25	# define STACKSIZE 65536	50	# define STACKSIZE 65536
26	#else	51	#else
27	# define STACKSIZE 4096	52	# define STACKSIZE 8192
28	#endif	53	#endif
29		54
30	enum {	55	enum {
31	REQ_QUIT,	56	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	57	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		59	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	61	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,	62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37	REQ_SYMLINK,	63	REQ_READDIR,
		64	REQ_LINK, REQ_SYMLINK,
		65	REQ_GROUP, REQ_NOP,
		66	REQ_SLEEP,
38	};	67	};
39		68
		69	#define AIO_REQ_KLASS "IO::AIO::REQ"
		70	#define AIO_GRP_KLASS "IO::AIO::GRP"
		71
40	typedef struct aio_cb {	72	typedef struct aio_cb
		73	{
41	struct aio_cb *volatile next;	74	struct aio_cb *volatile next;
42		75
43	int type;	76	SV data, callback;
44		77	SV fh, fh2;
45	int fd;	78	void dataptr, data2ptr;
		79	Stat_t *statdata;
46	off_t offset;	80	off_t offset;
47	size_t length;	81	size_t length;
48	ssize_t result;	82	ssize_t result;
		83
		84	STRLEN dataoffset;
		85	int type;
		86	int fd, fd2;
		87	int errorno;
49	mode_t mode; /* open */	88	mode_t mode; /* open */
50	int errorno;
51	SV data, callback, *fh;
52	void dataptr, data2ptr;
53	STRLEN dataoffset;
54		89
55	Stat_t *statdata;	90	unsigned char flags;
		91	unsigned char pri;
		92
		93	SV self; / the perl counterpart of this request, if any */
		94	struct aio_cb grp, grp_prev, grp_next, grp_first;
56	} aio_cb;	95	} aio_cb;
57		96
		97	enum {
		98	FLAG_CANCELLED = 0x01,
		99	};
		100
58	typedef aio_cb *aio_req;	101	typedef aio_cb *aio_req;
		102	typedef aio_cb *aio_req_ornot;
		103
		104	enum {
		105	PRI_MIN = -4,
		106	PRI_MAX = 4,
		107
		108	DEFAULT_PRI = 0,
		109	PRI_BIAS = -PRI_MIN,
		110	};
		111
		112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
59		113
60	static int started, wanted;	114	static int started, wanted;
61	static volatile int nreqs;	115	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	116	static int max_outstanding = 1<<30;
63	static int respipe [2];	117	static int respipe [2];
64		118
		119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		121	#else
		122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		123	#endif
		124
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		128
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	129	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	130	static volatile aio_req ress, rese; /* queue start, queue end */
71		131
		132	static void req_invoke (aio_req req);
72	static void free_req (aio_req req)	133	static void req_free (aio_req req);
73	{
74	if (req->data)
75	SvREFCNT_dec (req->data);
76		134
		135	/* must be called at most once */
		136	static SV req_sv (aio_req req, const char klass)
		137	{
77	if (req->fh)	138	if (!req->self)
		139	{
		140	req->self = (SV *)newHV ();
		141	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		142	}
		143
		144	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		145	}
		146
		147	static aio_req SvAIO_REQ (SV *sv)
		148	{
		149	MAGIC *mg;
		150
		151	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		152	croak ("object of class " AIO_REQ_KLASS " expected");
		153
		154	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		155
		156	return mg ? (aio_req)mg->mg_ptr : 0;
		157	}
		158
		159	static void aio_grp_feed (aio_req grp)
		160	{
		161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		162	{
		163	int old_len = grp->length;
		164
		165	if (grp->fh2 && SvOK (grp->fh2))
		166	{
		167	dSP;
		168
		169	ENTER;
		170	SAVETMPS;
		171	PUSHMARK (SP);
		172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		173	PUTBACK;
		174	call_sv (grp->fh2, G_VOID \| G_EVAL);
		175	SPAGAIN;
		176	FREETMPS;
		177	LEAVE;
		178	}
		179
		180	/* stop if no progress has been made */
		181	if (old_len == grp->length)
		182	{
78	SvREFCNT_dec (req->fh);	183	SvREFCNT_dec (grp->fh2);
79		184	grp->fh2 = 0;
80	if (req->statdata)	185	break;
81	Safefree (req->statdata);	186	}
82
83	if (req->callback)
84	SvREFCNT_dec (req->callback);
85
86	Safefree (req);
87	}
88
89	static void
90	poll_wait ()
91	{
92	if (nreqs && !ress)
93	{	187	}
		188	}
		189
		190	static void aio_grp_dec (aio_req grp)
		191	{
		192	--grp->length;
		193
		194	/* call feeder, if applicable */
		195	aio_grp_feed (grp);
		196
		197	/* finish, if done */
		198	if (!grp->length && grp->fd)
		199	{
		200	req_invoke (grp);
		201	req_free (grp);
		202	}
		203	}
		204
		205	static void poll_wait ()
		206	{
94	fd_set rfd;	207	fd_set rfd;
		208
		209	while (nreqs)
		210	{
		211	aio_req req;
		212	pthread_mutex_lock (&reslock);
		213	req = ress;
		214	pthread_mutex_unlock (&reslock);
		215
		216	if (req)
		217	return;
		218
95	FD_ZERO(&rfd);	219	FD_ZERO(&rfd);
96	FD_SET(respipe [0], &rfd);	220	FD_SET(respipe [0], &rfd);
97		221
98	select (respipe [0] + 1, &rfd, 0, 0, 0);	222	select (respipe [0] + 1, &rfd, 0, 0, 0);
99	}	223	}
100	}	224	}
101		225
102	static int	226	static void req_invoke (aio_req req)
103	poll_cb ()	227	{
		228	dSP;
		229	int errorno = errno;
		230
		231	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		232	return;
		233
		234	errno = req->errorno;
		235
		236	ENTER;
		237	SAVETMPS;
		238	PUSHMARK (SP);
		239	EXTEND (SP, 1);
		240
		241	switch (req->type)
		242	{
		243	case REQ_READDIR:
		244	{
		245	SV *rv = &PL_sv_undef;
		246
		247	if (req->result >= 0)
		248	{
		249	char *buf = req->data2ptr;
		250	AV *av = newAV ();
		251
		252	while (req->result)
		253	{
		254	SV *sv = newSVpv (buf, 0);
		255
		256	av_push (av, sv);
		257	buf += SvCUR (sv) + 1;
		258	req->result--;
		259	}
		260
		261	rv = sv_2mortal (newRV_noinc ((SV *)av));
		262	}
		263
		264	PUSHs (rv);
		265	}
		266	break;
		267
		268	case REQ_OPEN:
		269	{
		270	/* convert fd to fh */
		271	SV *fh;
		272
		273	PUSHs (sv_2mortal (newSViv (req->result)));
		274	PUTBACK;
		275	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		276	SPAGAIN;
		277
		278	fh = SvREFCNT_inc (POPs);
		279
		280	PUSHMARK (SP);
		281	XPUSHs (sv_2mortal (fh));
		282	}
		283	break;
		284
		285	case REQ_GROUP:
		286	req->fd = 2; /* mark group as finished */
		287
		288	if (req->data)
		289	{
		290	int i;
		291	AV av = (AV )req->data;
		292
		293	EXTEND (SP, AvFILL (av) + 1);
		294	for (i = 0; i <= AvFILL (av); ++i)
		295	PUSHs (*av_fetch (av, i, 0));
		296	}
		297	break;
		298
		299	case REQ_NOP:
		300	case REQ_SLEEP:
		301	break;
		302
		303	default:
		304	PUSHs (sv_2mortal (newSViv (req->result)));
		305	break;
		306	}
		307
		308
		309	PUTBACK;
		310	call_sv (req->callback, G_VOID \| G_EVAL);
		311	SPAGAIN;
		312
		313	FREETMPS;
		314	LEAVE;
		315
		316	errno = errorno;
		317
		318	if (SvTRUE (ERRSV))
		319	{
		320	req_free (req);
		321	croak (0);
		322	}
		323	}
		324
		325	static void req_free (aio_req req)
		326	{
		327	if (req->grp)
		328	{
		329	aio_req grp = req->grp;
		330
		331	/* unlink request */
		332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		334
		335	if (grp->grp_first == req)
		336	grp->grp_first = req->grp_next;
		337
		338	aio_grp_dec (grp);
		339	}
		340
		341	if (req->self)
		342	{
		343	sv_unmagic (req->self, PERL_MAGIC_ext);
		344	SvREFCNT_dec (req->self);
		345	}
		346
		347	SvREFCNT_dec (req->data);
		348	SvREFCNT_dec (req->fh);
		349	SvREFCNT_dec (req->fh2);
		350	SvREFCNT_dec (req->callback);
		351	Safefree (req->statdata);
		352
		353	if (req->type == REQ_READDIR && req->result >= 0)
		354	free (req->data2ptr);
		355
		356	Safefree (req);
		357	}
		358
		359	static void req_cancel (aio_req req)
		360	{
		361	req->flags \|= FLAG_CANCELLED;
		362
		363	if (req->type == REQ_GROUP)
		364	{
		365	aio_req sub;
		366
		367	for (sub = req->grp_first; sub; sub = sub->grp_next)
		368	req_cancel (sub);
		369	}
		370	}
		371
		372	static int poll_cb ()
104	{	373	{
105	dSP;	374	dSP;
106	int count = 0;	375	int count = 0;
107	int do_croak = 0;	376	int do_croak = 0;
108	aio_req req;	377	aio_req req;
130	pthread_mutex_unlock (&reslock);	399	pthread_mutex_unlock (&reslock);
131		400
132	if (!req)	401	if (!req)
133	break;	402	break;
134		403
135	nreqs--;	404	--nreqs;
136		405
137	if (req->type == REQ_QUIT)	406	if (req->type == REQ_QUIT)
138	started--;	407	started--;
		408	else if (req->type == REQ_GROUP && req->length)
		409	{
		410	req->fd = 1; /* mark request as delayed */
		411	continue;
		412	}
139	else	413	else
140	{	414	{
141	int errorno = errno;
142	errno = req->errorno;
143
144	if (req->type == REQ_READ)	415	if (req->type == REQ_READ)
145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146		417
147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	418	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
148	SvREADONLY_off (req->data);	419	SvREADONLY_off (req->data);
…		…
152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153	PL_laststatval = req->result;	424	PL_laststatval = req->result;
154	PL_statcache = *(req->statdata);	425	PL_statcache = *(req->statdata);
155	}	426	}
156		427
157	ENTER;	428	req_invoke (req);
158	PUSHMARK (SP);
159	XPUSHs (sv_2mortal (newSViv (req->result)));
160		429
161	if (req->type == REQ_OPEN)
162	{
163	/* convert fd to fh */
164	SV *fh;
165
166	PUTBACK;
167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
168	SPAGAIN;
169
170	fh = SvREFCNT_inc (POPs);
171
172	PUSHMARK (SP);
173	XPUSHs (sv_2mortal (fh));
174	}
175
176	if (SvOK (req->callback))
177	{
178	PUTBACK;
179	call_sv (req->callback, G_VOID \| G_EVAL);
180	SPAGAIN;
181
182	if (SvTRUE (ERRSV))
183	{
184	free_req (req);
185	croak (0);
186	}
187	}
188
189	LEAVE;
190
191	errno = errorno;
192	count++;	430	count++;
193	}	431	}
194		432
195	free_req (req);	433	req_free (req);
196	}	434	}
197		435
198	return count;	436	return count;
199	}	437	}
200		438
201	static void aio_proc(void arg);	439	static void aio_proc(void arg);
202		440
203	static void
204	start_thread (void)	441	static void start_thread (void)
205	{	442	{
206	sigset_t fullsigset, oldsigset;	443	sigset_t fullsigset, oldsigset;
207	pthread_t tid;	444	pthread_t tid;
208	pthread_attr_t attr;	445	pthread_attr_t attr;
209		446
…		…
218	started++;	455	started++;
219		456
220	sigprocmask (SIG_SETMASK, &oldsigset, 0);	457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
221	}	458	}
222		459
223	static void	460	static void req_send (aio_req req)
224	send_req (aio_req req)
225	{	461	{
226	while (started < wanted && nreqs >= started)	462	while (started < wanted && nreqs >= started)
227	start_thread ();	463	start_thread ();
228		464
229	nreqs++;	465	++nreqs;
230		466
231	pthread_mutex_lock (&reqlock);	467	pthread_mutex_lock (&reqlock);
232		468
233	req->next = 0;	469	req->next = 0;
234		470
…		…
253		489
254	poll_wait ();	490	poll_wait ();
255	}	491	}
256	}	492	}
257		493
258	static void	494	static void end_thread (void)
259	end_thread (void)
260	{	495	{
261	aio_req req;	496	aio_req req;
262	Newz (0, req, 1, aio_cb);	497	Newz (0, req, 1, aio_cb);
263	req->type = REQ_QUIT;	498	req->type = REQ_QUIT;
264		499
265	send_req (req);	500	req_send (req);
266	}	501	}
267		502
268	static void min_parallel (int nthreads)	503	static void min_parallel (int nthreads)
269	{	504	{
270	if (wanted < nthreads)	505	if (wanted < nthreads)
…		…
299	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
300	croak ("cannot set result pipe to nonblocking mode");	535	croak ("cannot set result pipe to nonblocking mode");
301		536
302	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
303	croak ("cannot set result pipe to nonblocking mode");	538	croak ("cannot set result pipe to nonblocking mode");
304	}
305
306	static void atfork_prepare (void)
307	{
308	pthread_mutex_lock (&reqlock);
309	pthread_mutex_lock (&reslock);
310	}
311
312	static void atfork_parent (void)
313	{
314	pthread_mutex_unlock (&reslock);
315	pthread_mutex_unlock (&reqlock);
316	}
317
318	static void atfork_child (void)
319	{
320	aio_req prv;
321
322	started = 0;
323
324	while (reqs)
325	{
326	prv = reqs;
327	reqs = prv->next;
328	free_req (prv);
329	}
330
331	reqs = reqe = 0;
332
333	while (ress)
334	{
335	prv = ress;
336	ress = prv->next;
337	free_req (prv);
338	}
339
340	ress = rese = 0;
341
342	close (respipe [0]);
343	close (respipe [1]);
344	create_pipe ();
345
346	atfork_parent ();
347	}	539	}
348		540
349	/*****************************************************************************/	541	/*****************************************************************************/
350	/* work around various missing functions */	542	/* work around various missing functions */
351		543
…		…
356	/*	548	/*
357	* make our pread/pwrite safe against themselves, but not against	549	* make our pread/pwrite safe against themselves, but not against
358	* normal read/write by using a mutex. slows down execution a lot,	550	* normal read/write by using a mutex. slows down execution a lot,
359	* but that's your problem, not mine.	551	* but that's your problem, not mine.
360	*/	552	*/
361	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
362		554
363	static ssize_t	555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
364	pread (int fd, void *buf, size_t count, off_t offset)
365	{	556	{
366	ssize_t res;	557	ssize_t res;
367	off_t ooffset;	558	off_t ooffset;
368		559
369	pthread_mutex_lock (&iolock);	560	pthread_mutex_lock (&preadwritelock);
370	ooffset = lseek (fd, 0, SEEK_CUR);	561	ooffset = lseek (fd, 0, SEEK_CUR);
371	lseek (fd, offset, SEEK_SET);	562	lseek (fd, offset, SEEK_SET);
372	res = read (fd, buf, count);	563	res = read (fd, buf, count);
373	lseek (fd, ooffset, SEEK_SET);	564	lseek (fd, ooffset, SEEK_SET);
374	pthread_mutex_unlock (&iolock);	565	pthread_mutex_unlock (&preadwritelock);
375		566
376	return res;	567	return res;
377	}	568	}
378		569
379	static ssize_t
380	pwrite (int fd, void *buf, size_t count, off_t offset)	570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
381	{	571	{
382	ssize_t res;	572	ssize_t res;
383	off_t ooffset;	573	off_t ooffset;
384		574
385	pthread_mutex_lock (&iolock);	575	pthread_mutex_lock (&preadwritelock);
386	ooffset = lseek (fd, 0, SEEK_CUR);	576	ooffset = lseek (fd, 0, SEEK_CUR);
387	lseek (fd, offset, SEEK_SET);	577	lseek (fd, offset, SEEK_SET);
388	res = write (fd, buf, count);	578	res = write (fd, buf, count);
389	lseek (fd, offset, SEEK_SET);	579	lseek (fd, offset, SEEK_SET);
390	pthread_mutex_unlock (&iolock);	580	pthread_mutex_unlock (&preadwritelock);
391		581
392	return res;	582	return res;
393	}	583	}
394	#endif	584	#endif
395		585
…		…
398	#endif	588	#endif
399		589
400	#if !HAVE_READAHEAD	590	#if !HAVE_READAHEAD
401	# define readahead aio_readahead	591	# define readahead aio_readahead
402		592
		593	static ssize_t readahead (int fd, off_t offset, size_t count)
		594	{
403	static char readahead_buf[4096];	595	char readahead_buf[4096];
404		596
405	static ssize_t
406	readahead (int fd, off_t offset, size_t count)
407	{
408	while (count > 0)	597	while (count > 0)
409	{	598	{
410	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
411		600
412	pread (fd, readahead_buf, len, offset);	601	pread (fd, readahead_buf, len, offset);
…		…
416		605
417	errno = 0;	606	errno = 0;
418	}	607	}
419	#endif	608	#endif
420		609
		610	#if !HAVE_READDIR_R
		611	# define readdir_r aio_readdir_r
		612
		613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		614
		615	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		616	{
		617	struct dirent *e;
		618	int errorno;
		619
		620	pthread_mutex_lock (&readdirlock);
		621
		622	e = readdir (dirp);
		623	errorno = errno;
		624
		625	if (e)
		626	{
		627	*res = ent;
		628	strcpy (ent->d_name, e->d_name);
		629	}
		630	else
		631	*res = 0;
		632
		633	pthread_mutex_unlock (&readdirlock);
		634
		635	errno = errorno;
		636	return e ? 0 : -1;
		637	}
		638	#endif
		639
		640	/* sendfile always needs emulation */
		641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		642	{
		643	ssize_t res;
		644
		645	if (!count)
		646	return 0;
		647
		648	#if HAVE_SENDFILE
		649	# if __linux
		650	res = sendfile (ofd, ifd, &offset, count);
		651
		652	# elif __freebsd
		653	/*
		654	* Of course, the freebsd sendfile is a dire hack with no thoughts
		655	* wasted on making it similar to other I/O functions.
		656	*/
		657	{
		658	off_t sbytes;
		659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		660
		661	if (res < 0 && sbytes)
		662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		663	res = sbytes;
		664	}
		665
		666	# elif __hpux
		667	res = sendfile (ofd, ifd, offset, count, 0, 0);
		668
		669	# elif __solaris
		670	{
		671	struct sendfilevec vec;
		672	size_t sbytes;
		673
		674	vec.sfv_fd = ifd;
		675	vec.sfv_flag = 0;
		676	vec.sfv_off = offset;
		677	vec.sfv_len = count;
		678
		679	res = sendfilev (ofd, &vec, 1, &sbytes);
		680
		681	if (res < 0 && sbytes)
		682	res = sbytes;
		683	}
		684
		685	# endif
		686	#else
		687	res = -1;
		688	errno = ENOSYS;
		689	#endif
		690
		691	if (res < 0
		692	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		693	#if __solaris
		694	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		695	#endif
		696	)
		697	)
		698	{
		699	/* emulate sendfile. this is a major pain in the ass */
		700	char buf[4096];
		701	res = 0;
		702
		703	while (count)
		704	{
		705	ssize_t cnt;
		706
		707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		708
		709	if (cnt <= 0)
		710	{
		711	if (cnt && !res) res = -1;
		712	break;
		713	}
		714
		715	cnt = write (ofd, buf, cnt);
		716
		717	if (cnt <= 0)
		718	{
		719	if (cnt && !res) res = -1;
		720	break;
		721	}
		722
		723	offset += cnt;
		724	res += cnt;
		725	count -= cnt;
		726	}
		727	}
		728
		729	return res;
		730	}
		731
		732	/* read a full directory */
		733	static int scandir_ (const char path, void *namesp)
		734	{
		735	DIR *dirp = opendir (path);
		736	union
		737	{
		738	struct dirent d;
		739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		740	} u;
		741	struct dirent *entp;
		742	char name, names;
		743	int memlen = 4096;
		744	int memofs = 0;
		745	int res = 0;
		746	int errorno;
		747
		748	if (!dirp)
		749	return -1;
		750
		751	names = malloc (memlen);
		752
		753	for (;;)
		754	{
		755	errno = 0, readdir_r (dirp, &u.d, &entp);
		756
		757	if (!entp)
		758	break;
		759
		760	name = entp->d_name;
		761
		762	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		763	{
		764	int len = strlen (name) + 1;
		765
		766	res++;
		767
		768	while (memofs + len > memlen)
		769	{
		770	memlen *= 2;
		771	names = realloc (names, memlen);
		772	if (!names)
		773	break;
		774	}
		775
		776	memcpy (names + memofs, name, len);
		777	memofs += len;
		778	}
		779	}
		780
		781	errorno = errno;
		782	closedir (dirp);
		783
		784	if (errorno)
		785	{
		786	free (names);
		787	errno = errorno;
		788	res = -1;
		789	}
		790
		791	namesp = (void )names;
		792	return res;
		793	}
		794
421	/*****************************************************************************/	795	/*****************************************************************************/
422		796
423	static void *
424	aio_proc (void *thr_arg)	797	static void aio_proc (void thr_arg)
425	{	798	{
426	aio_req req;	799	aio_req req;
427	int type;	800	int type;
428		801
429	do	802	do
…		…
447	}	820	}
448		821
449	pthread_mutex_unlock (&reqlock);	822	pthread_mutex_unlock (&reqlock);
450		823
451	errno = 0; /* strictly unnecessary */	824	errno = 0; /* strictly unnecessary */
		825	type = req->type; /* remember type for QUIT check */
452		826
453	type = req->type;	827	if (!(req->flags & FLAG_CANCELLED))
454
455	switch (type)	828	switch (type)
456	{	829	{
457	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
458	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
459		832
460	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
461		835
462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
465		839
466	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
467	case REQ_CLOSE: req->result = close (req->fd); break;	841	case REQ_CLOSE: req->result = close (req->fd); break;
468	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
469	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
470	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
471		847
472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
473	case REQ_FSYNC: req->result = fsync (req->fd); break;	849	case REQ_FSYNC: req->result = fsync (req->fd); break;
		850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
474		851
		852	case REQ_SLEEP:
		853	{
		854	struct timeval tv;
		855
		856	tv.tv_sec = req->fd;
		857	tv.tv_usec = req->fd2;
		858
		859	req->result = select (0, 0, 0, 0, &tv);
		860	}
		861
		862	case REQ_GROUP:
		863	case REQ_NOP:
475	case REQ_QUIT:	864	case REQ_QUIT:
476	break;	865	break;
477		866
478	default:	867	default:
479	req->result = ENOSYS;	868	req->result = ENOSYS;
480	break;	869	break;
481	}	870	}
482		871
483	req->errorno = errno;	872	req->errorno = errno;
484		873
485	pthread_mutex_lock (&reslock);	874	pthread_mutex_lock (&reslock);
486		875
…		…
504	while (type != REQ_QUIT);	893	while (type != REQ_QUIT);
505		894
506	return 0;	895	return 0;
507	}	896	}
508		897
		898	/*****************************************************************************/
		899
		900	static void atfork_prepare (void)
		901	{
		902	pthread_mutex_lock (&reqlock);
		903	pthread_mutex_lock (&reslock);
		904	#if !HAVE_PREADWRITE
		905	pthread_mutex_lock (&preadwritelock);
		906	#endif
		907	#if !HAVE_READDIR_R
		908	pthread_mutex_lock (&readdirlock);
		909	#endif
		910	}
		911
		912	static void atfork_parent (void)
		913	{
		914	#if !HAVE_READDIR_R
		915	pthread_mutex_unlock (&readdirlock);
		916	#endif
		917	#if !HAVE_PREADWRITE
		918	pthread_mutex_unlock (&preadwritelock);
		919	#endif
		920	pthread_mutex_unlock (&reslock);
		921	pthread_mutex_unlock (&reqlock);
		922	}
		923
		924	static void atfork_child (void)
		925	{
		926	aio_req prv;
		927
		928	started = 0;
		929
		930	while (reqs)
		931	{
		932	prv = reqs;
		933	reqs = prv->next;
		934	req_free (prv);
		935	}
		936
		937	reqs = reqe = 0;
		938
		939	while (ress)
		940	{
		941	prv = ress;
		942	ress = prv->next;
		943	req_free (prv);
		944	}
		945
		946	ress = rese = 0;
		947
		948	close (respipe [0]);
		949	close (respipe [1]);
		950	create_pipe ();
		951
		952	atfork_parent ();
		953	}
		954
509	#define dREQ \	955	#define dREQ \
510	aio_req req; \	956	aio_req req; \
		957	int req_pri = next_pri; \
		958	next_pri = DEFAULT_PRI + PRI_BIAS; \
511	\	959	\
512	if (SvOK (callback) && !SvROK (callback)) \	960	if (SvOK (callback) && !SvROK (callback)) \
513	croak ("clalback must be undef or of reference type"); \	961	croak ("callback must be undef or of reference type"); \
514	\	962	\
515	Newz (0, req, 1, aio_cb); \	963	Newz (0, req, 1, aio_cb); \
516	if (!req) \	964	if (!req) \
517	croak ("out of memory during aio_req allocation"); \	965	croak ("out of memory during aio_req allocation"); \
518	\	966	\
519	req->callback = newSVsv (callback);	967	req->callback = newSVsv (callback); \
		968	req->pri = req_pri
		969
		970	#define REQ_SEND \
		971	req_send (req); \
		972	\
		973	if (GIMME_V != G_VOID) \
		974	XPUSHs (req_sv (req, AIO_REQ_KLASS));
520		975
521	MODULE = IO::AIO PACKAGE = IO::AIO	976	MODULE = IO::AIO PACKAGE = IO::AIO
522		977
523	PROTOTYPES: ENABLE	978	PROTOTYPES: ENABLE
524		979
525	BOOT:	980	BOOT:
526	{	981	{
		982	HV *stash = gv_stashpv ("IO::AIO", 1);
		983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		986
527	create_pipe ();	987	create_pipe ();
528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
529	}	989	}
530		990
531	void	991	void
532	min_parallel(nthreads)	992	min_parallel (nthreads)
533	int nthreads	993	int nthreads
534	PROTOTYPE: $	994	PROTOTYPE: $
535		995
536	void	996	void
537	max_parallel(nthreads)	997	max_parallel (nthreads)
538	int nthreads	998	int nthreads
539	PROTOTYPE: $	999	PROTOTYPE: $
540		1000
541	int	1001	int
542	max_outstanding(nreqs)	1002	max_outstanding (nreqs)
543	int nreqs	1003	int nreqs
544	PROTOTYPE: $	1004	PROTOTYPE: $
545	CODE:	1005	CODE:
546	RETVAL = max_outstanding;	1006	RETVAL = max_outstanding;
547	max_outstanding = nreqs;	1007	max_outstanding = nreqs;
548		1008
549	void	1009	void
550	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
551	SV * pathname	1011	SV * pathname
552	int flags	1012	int flags
553	int mode	1013	int mode
554	SV * callback	1014	SV * callback
555	PROTOTYPE: $$$;$	1015	PROTOTYPE: $$$;$
556	CODE:	1016	PPCODE:
557	{	1017	{
558	dREQ;	1018	dREQ;
559		1019
560	req->type = REQ_OPEN;	1020	req->type = REQ_OPEN;
561	req->data = newSVsv (pathname);	1021	req->data = newSVsv (pathname);
562	req->dataptr = SvPVbyte_nolen (req->data);	1022	req->dataptr = SvPVbyte_nolen (req->data);
563	req->fd = flags;	1023	req->fd = flags;
564	req->mode = mode;	1024	req->mode = mode;
565		1025
566	send_req (req);	1026	REQ_SEND;
567	}	1027	}
568		1028
569	void	1029	void
570	aio_close(fh,callback=&PL_sv_undef)	1030	aio_close (fh,callback=&PL_sv_undef)
571	SV * fh	1031	SV * fh
572	SV * callback	1032	SV * callback
573	PROTOTYPE: $;$	1033	PROTOTYPE: $;$
574	ALIAS:	1034	ALIAS:
575	aio_close = REQ_CLOSE	1035	aio_close = REQ_CLOSE
576	aio_fsync = REQ_FSYNC	1036	aio_fsync = REQ_FSYNC
577	aio_fdatasync = REQ_FDATASYNC	1037	aio_fdatasync = REQ_FDATASYNC
578	CODE:	1038	PPCODE:
579	{	1039	{
580	dREQ;	1040	dREQ;
581		1041
582	req->type = ix;	1042	req->type = ix;
583	req->fh = newSVsv (fh);	1043	req->fh = newSVsv (fh);
584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
585		1045
586	send_req (req);	1046	REQ_SEND (req);
587	}	1047	}
588		1048
589	void	1049	void
590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
591	SV * fh	1051	SV * fh
592	UV offset	1052	UV offset
593	IV length	1053	UV length
594	SV * data	1054	SV * data
595	IV dataoffset	1055	UV dataoffset
596	SV * callback	1056	SV * callback
597	ALIAS:	1057	ALIAS:
598	aio_read = REQ_READ	1058	aio_read = REQ_READ
599	aio_write = REQ_WRITE	1059	aio_write = REQ_WRITE
600	PROTOTYPE: $$$$$;$	1060	PROTOTYPE: $$$$$;$
601	CODE:	1061	PPCODE:
602	{	1062	{
603	aio_req req;	1063	aio_req req;
604	STRLEN svlen;	1064	STRLEN svlen;
605	char *svptr = SvPVbyte (data, svlen);	1065	char *svptr = SvPVbyte (data, svlen);
606		1066
…		…
644	{	1104	{
645	SvREADONLY_on (data);	1105	SvREADONLY_on (data);
646	req->data2ptr = (void *)data;	1106	req->data2ptr = (void *)data;
647	}	1107	}
648		1108
649	send_req (req);	1109	REQ_SEND;
650	}	1110	}
651	}	1111	}
652		1112
653	void	1113	void
		1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1115	SV * out_fh
		1116	SV * in_fh
		1117	UV in_offset
		1118	UV length
		1119	SV * callback
		1120	PROTOTYPE: $$$$;$
		1121	PPCODE:
		1122	{
		1123	dREQ;
		1124
		1125	req->type = REQ_SENDFILE;
		1126	req->fh = newSVsv (out_fh);
		1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1128	req->fh2 = newSVsv (in_fh);
		1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1130	req->offset = in_offset;
		1131	req->length = length;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
655	SV * fh	1138	SV * fh
656	UV offset	1139	UV offset
657	IV length	1140	IV length
658	SV * callback	1141	SV * callback
659	PROTOTYPE: $$$;$	1142	PROTOTYPE: $$$;$
660	CODE:	1143	PPCODE:
661	{	1144	{
662	dREQ;	1145	dREQ;
663		1146
664	req->type = REQ_READAHEAD;	1147	req->type = REQ_READAHEAD;
665	req->fh = newSVsv (fh);	1148	req->fh = newSVsv (fh);
666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
667	req->offset = offset;	1150	req->offset = offset;
668	req->length = length;	1151	req->length = length;
669		1152
670	send_req (req);	1153	REQ_SEND;
671	}	1154	}
672		1155
673	void	1156	void
674	aio_stat(fh_or_path,callback=&PL_sv_undef)	1157	aio_stat (fh_or_path,callback=&PL_sv_undef)
675	SV * fh_or_path	1158	SV * fh_or_path
676	SV * callback	1159	SV * callback
677	ALIAS:	1160	ALIAS:
678	aio_stat = REQ_STAT	1161	aio_stat = REQ_STAT
679	aio_lstat = REQ_LSTAT	1162	aio_lstat = REQ_LSTAT
680	CODE:	1163	PPCODE:
681	{	1164	{
682	dREQ;	1165	dREQ;
683		1166
684	New (0, req->statdata, 1, Stat_t);	1167	New (0, req->statdata, 1, Stat_t);
685	if (!req->statdata)	1168	if (!req->statdata)
686	{	1169	{
687	free_req (req);	1170	req_free (req);
688	croak ("out of memory during aio_req->statdata allocation");	1171	croak ("out of memory during aio_req->statdata allocation");
689	}	1172	}
690		1173
691	if (SvPOK (fh_or_path))	1174	if (SvPOK (fh_or_path))
692	{	1175	{
…		…
699	req->type = REQ_FSTAT;	1182	req->type = REQ_FSTAT;
700	req->fh = newSVsv (fh_or_path);	1183	req->fh = newSVsv (fh_or_path);
701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
702	}	1185	}
703		1186
704	send_req (req);	1187	REQ_SEND;
705	}	1188	}
706		1189
707	void	1190	void
708	aio_unlink(pathname,callback=&PL_sv_undef)	1191	aio_unlink (pathname,callback=&PL_sv_undef)
709	SV * pathname	1192	SV * pathname
710	SV * callback	1193	SV * callback
711	ALIAS:	1194	ALIAS:
712	aio_unlink = REQ_UNLINK	1195	aio_unlink = REQ_UNLINK
713	aio_rmdir = REQ_RMDIR	1196	aio_rmdir = REQ_RMDIR
		1197	aio_readdir = REQ_READDIR
714	CODE:	1198	PPCODE:
715	{	1199	{
716	dREQ;	1200	dREQ;
717		1201
718	req->type = ix;	1202	req->type = ix;
719	req->data = newSVsv (pathname);	1203	req->data = newSVsv (pathname);
720	req->dataptr = SvPVbyte_nolen (req->data);	1204	req->dataptr = SvPVbyte_nolen (req->data);
721		1205
722	send_req (req);	1206	REQ_SEND;
723	}	1207	}
724		1208
725	void	1209	void
726	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)
727	SV * oldpath	1211	SV * oldpath
728	SV * newpath	1212	SV * newpath
729	SV * callback	1213	SV * callback
		1214	ALIAS:
		1215	aio_link = REQ_LINK
		1216	aio_symlink = REQ_SYMLINK
		1217	aio_rename = REQ_RENAME
730	CODE:	1218	PPCODE:
731	{	1219	{
732	dREQ;	1220	dREQ;
733		1221
734	req->type = REQ_SYMLINK;	1222	req->type = ix;
735	req->fh = newSVsv (oldpath);	1223	req->fh = newSVsv (oldpath);
736	req->data2ptr = SvPVbyte_nolen (req->fh);	1224	req->data2ptr = SvPVbyte_nolen (req->fh);
737	req->data = newSVsv (newpath);	1225	req->data = newSVsv (newpath);
738	req->dataptr = SvPVbyte_nolen (req->data);	1226	req->dataptr = SvPVbyte_nolen (req->data);
739		1227
740	send_req (req);	1228	REQ_SEND;
741	}	1229	}
742		1230
743	void	1231	void
		1232	aio_sleep (delay,callback=&PL_sv_undef)
		1233	double delay
		1234	SV * callback
		1235	PPCODE:
		1236	{
		1237	dREQ;
		1238
		1239	req->type = REQ_SLEEP;
		1240	req->fd = delay < 0. ? 0 : delay;
		1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1242
		1243	REQ_SEND;
		1244	}
		1245
		1246	void
		1247	aio_group (callback=&PL_sv_undef)
		1248	SV * callback
		1249	PROTOTYPE: ;$
		1250	PPCODE:
		1251	{
		1252	dREQ;
		1253
		1254	req->type = REQ_GROUP;
		1255	req_send (req);
		1256
		1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1258	}
		1259
		1260	void
		1261	aio_nop (callback=&PL_sv_undef)
		1262	SV * callback
		1263	PPCODE:
		1264	{
		1265	dREQ;
		1266
		1267	req->type = REQ_NOP;
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	#if 0
		1273
		1274	void
		1275	aio_pri (int pri = DEFAULT_PRI)
		1276	CODE:
		1277	if (pri < PRI_MIN) pri = PRI_MIN;
		1278	if (pri > PRI_MAX) pri = PRI_MAX;
		1279	next_pri = pri + PRI_BIAS;
		1280
		1281	#endif
		1282
		1283	void
744	flush()	1284	flush ()
745	PROTOTYPE:	1285	PROTOTYPE:
746	CODE:	1286	CODE:
747	while (nreqs)	1287	while (nreqs)
748	{	1288	{
749	poll_wait ();	1289	poll_wait ();
…		…
789	CODE:	1329	CODE:
790	RETVAL = nreqs;	1330	RETVAL = nreqs;
791	OUTPUT:	1331	OUTPUT:
792	RETVAL	1332	RETVAL
793		1333
		1334	PROTOTYPES: DISABLE
		1335
		1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1337
		1338	void
		1339	cancel (aio_req_ornot req)
		1340	PROTOTYPE:
		1341	CODE:
		1342	req_cancel (req);
		1343
		1344	void
		1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1346	CODE:
		1347	SvREFCNT_dec (req->callback);
		1348	req->callback = newSVsv (callback);
		1349
		1350	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1351
		1352	void
		1353	add (aio_req grp, ...)
		1354	PPCODE:
		1355	{
		1356	int i;
		1357	aio_req req;
		1358
		1359	if (grp->fd == 2)
		1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1361
		1362	for (i = 1; i < items; ++i )
		1363	{
		1364	if (GIMME_V != G_VOID)
		1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1366
		1367	req = SvAIO_REQ (ST (i));
		1368
		1369	if (req)
		1370	{
		1371	++grp->length;
		1372	req->grp = grp;
		1373
		1374	req->grp_prev = 0;
		1375	req->grp_next = grp->grp_first;
		1376
		1377	if (grp->grp_first)
		1378	grp->grp_first->grp_prev = req;
		1379
		1380	grp->grp_first = req;
		1381	}
		1382	}
		1383	}
		1384
		1385	void
		1386	result (aio_req grp, ...)
		1387	CODE:
		1388	{
		1389	int i;
		1390	AV *av = newAV ();
		1391
		1392	for (i = 1; i < items; ++i )
		1393	av_push (av, newSVsv (ST (i)));
		1394
		1395	SvREFCNT_dec (grp->data);
		1396	grp->data = (SV *)av;
		1397	}
		1398
		1399	void
		1400	feed_limit (aio_req grp, int limit)
		1401	CODE:
		1402	grp->fd2 = limit;
		1403	aio_grp_feed (grp);
		1404
		1405	void
		1406	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1407	CODE:
		1408	{
		1409	SvREFCNT_dec (grp->fh2);
		1410	grp->fh2 = newSVsv (callback);
		1411
		1412	if (grp->fd2 <= 0)
		1413	grp->fd2 = 2;
		1414
		1415	aio_grp_feed (grp);
		1416	}
		1417

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs. Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs.
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC