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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC

…		…
5	#include "perl.h"	5	#include "perl.h"
6	#include "XSUB.h"	6	#include "XSUB.h"
7		7
8	#include "autoconf/config.h"	8	#include "autoconf/config.h"
9		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
		14	#include <sys/time.h>
		15	#include <sys/select.h>
10	#include <sys/types.h>	16	#include <sys/types.h>
11	#include <sys/stat.h>	17	#include <sys/stat.h>
12		18	#include <limits.h>
13	#include <unistd.h>	19	#include <unistd.h>
14	#include <fcntl.h>	20	#include <fcntl.h>
15	#include <signal.h>	21	#include <signal.h>
16	#include <sched.h>	22	#include <sched.h>
17		23
18	#include <pthread.h>	24	#if HAVE_SENDFILE
		25	# if __linux
		26	# include <sys/sendfile.h>
		27	# elif __freebsd
		28	# include <sys/socket.h>
		29	# include <sys/uio.h>
		30	# elif __hpux
		31	# include <sys/socket.h>
		32	# elif __solaris /* not yet */
		33	# include <sys/sendfile.h>
		34	# else
		35	# error sendfile support requested but not available
		36	# endif
		37	#endif
19		38
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	/* used for struct dirent, AIX doesn't provide it */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	40	#ifndef NAME_MAX
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	41	# define NAME_MAX 4096
		42	#endif
23		43
24	#if __ia64	44	#if __ia64
25	# define STACKSIZE 65536	45	# define STACKSIZE 65536
26	#else	46	#else
27	# define STACKSIZE 4096	47	# define STACKSIZE 8192
28	#endif	48	#endif
29		49
30	enum {	50	enum {
31	REQ_QUIT,	51	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		54	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37	REQ_SYMLINK,	58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_GROUP, REQ_NOP,
		61	REQ_SLEEP,
38	};	62	};
39		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
40	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
41	struct aio_cb *volatile next;	69	struct aio_cb *volatile next;
42		70
43	int type;	71	SV data, callback;
44		72	SV fh, fh2;
45	int fd;	73	void dataptr, data2ptr;
		74	Stat_t *statdata;
46	off_t offset;	75	off_t offset;
47	size_t length;	76	size_t length;
48	ssize_t result;	77	ssize_t result;
		78
		79	STRLEN dataoffset;
		80	int type;
		81	int fd, fd2;
		82	int errorno;
49	mode_t mode; /* open */	83	mode_t mode; /* open */
50	int errorno;
51	SV data, callback, *fh;
52	void dataptr, data2ptr;
53	STRLEN dataoffset;
54		84
55	Stat_t *statdata;	85	unsigned char flags;
		86	unsigned char pri;
		87
		88	SV self; / the perl counterpart of this request, if any */
		89	struct aio_cb grp, grp_prev, grp_next, grp_first;
56	} aio_cb;	90	} aio_cb;
57		91
		92	enum {
		93	FLAG_CANCELLED = 0x01,
		94	};
		95
58	typedef aio_cb *aio_req;	96	typedef aio_cb *aio_req;
		97	typedef aio_cb *aio_req_ornot;
59		98
		99	enum {
		100	PRI_MIN = -4,
		101	PRI_MAX = 4,
		102
		103	DEFAULT_PRI = 0,
		104	PRI_BIAS = -PRI_MIN,
		105	};
		106
		107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		108
60	static int started;	109	static int started, wanted;
61	static volatile int nreqs;	110	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	111	static int max_outstanding = 1<<30;
63	static int respipe [2];	112	static int respipe [2];
64		113
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
…		…
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		117
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	118	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	119	static volatile aio_req ress, rese; /* queue start, queue end */
71		120
		121	static void req_invoke (aio_req req);
72	static void free_req (aio_req req)	122	static void req_free (aio_req req);
73	{
74	if (req->data)
75	SvREFCNT_dec (req->data);
76		123
		124	/* must be called at most once */
		125	static SV req_sv (aio_req req, const char klass)
		126	{
77	if (req->fh)	127	if (!req->self)
		128	{
		129	req->self = (SV *)newHV ();
		130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		131	}
		132
		133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		134	}
		135
		136	static aio_req SvAIO_REQ (SV *sv)
		137	{
		138	MAGIC *mg;
		139
		140	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		141	croak ("object of class " AIO_REQ_KLASS " expected");
		142
		143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		144
		145	return mg ? (aio_req)mg->mg_ptr : 0;
		146	}
		147
		148	static void aio_grp_feed (aio_req grp)
		149	{
		150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		151	{
		152	int old_len = grp->length;
		153
		154	if (grp->fh2 && SvOK (grp->fh2))
		155	{
		156	dSP;
		157
		158	ENTER;
		159	SAVETMPS;
		160	PUSHMARK (SP);
		161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		162	PUTBACK;
		163	call_sv (grp->fh2, G_VOID \| G_EVAL);
		164	SPAGAIN;
		165	FREETMPS;
		166	LEAVE;
		167	}
		168
		169	/* stop if no progress has been made */
		170	if (old_len == grp->length)
		171	{
78	SvREFCNT_dec (req->fh);	172	SvREFCNT_dec (grp->fh2);
79		173	grp->fh2 = 0;
80	if (req->statdata)	174	break;
81	Safefree (req->statdata);	175	}
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	{	176	}
		177	}
		178
		179	static void aio_grp_dec (aio_req grp)
		180	{
		181	--grp->length;
		182
		183	/* call feeder, if applicable */
		184	aio_grp_feed (grp);
		185
		186	/* finish, if done */
		187	if (!grp->length && grp->fd)
		188	{
		189	req_invoke (grp);
		190	req_free (grp);
		191	}
		192	}
		193
		194	static void poll_wait ()
		195	{
94	fd_set rfd;	196	fd_set rfd;
		197
		198	while (nreqs)
		199	{
		200	aio_req req;
		201	pthread_mutex_lock (&reslock);
		202	req = ress;
		203	pthread_mutex_unlock (&reslock);
		204
		205	if (req)
		206	return;
		207
95	FD_ZERO(&rfd);	208	FD_ZERO(&rfd);
96	FD_SET(respipe [0], &rfd);	209	FD_SET(respipe [0], &rfd);
97		210
98	select (respipe [0] + 1, &rfd, 0, 0, 0);	211	select (respipe [0] + 1, &rfd, 0, 0, 0);
99	}	212	}
100	}	213	}
101		214
102	static int	215	static void req_invoke (aio_req req)
103	poll_cb ()	216	{
		217	dSP;
		218	int errorno = errno;
		219
		220	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		221	return;
		222
		223	errno = req->errorno;
		224
		225	ENTER;
		226	SAVETMPS;
		227	PUSHMARK (SP);
		228	EXTEND (SP, 1);
		229
		230	switch (req->type)
		231	{
		232	case REQ_READDIR:
		233	{
		234	SV *rv = &PL_sv_undef;
		235
		236	if (req->result >= 0)
		237	{
		238	char *buf = req->data2ptr;
		239	AV *av = newAV ();
		240
		241	while (req->result)
		242	{
		243	SV *sv = newSVpv (buf, 0);
		244
		245	av_push (av, sv);
		246	buf += SvCUR (sv) + 1;
		247	req->result--;
		248	}
		249
		250	rv = sv_2mortal (newRV_noinc ((SV *)av));
		251	}
		252
		253	PUSHs (rv);
		254	}
		255	break;
		256
		257	case REQ_OPEN:
		258	{
		259	/* convert fd to fh */
		260	SV *fh;
		261
		262	PUSHs (sv_2mortal (newSViv (req->result)));
		263	PUTBACK;
		264	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		265	SPAGAIN;
		266
		267	fh = SvREFCNT_inc (POPs);
		268
		269	PUSHMARK (SP);
		270	XPUSHs (sv_2mortal (fh));
		271	}
		272	break;
		273
		274	case REQ_GROUP:
		275	req->fd = 2; /* mark group as finished */
		276
		277	if (req->data)
		278	{
		279	int i;
		280	AV av = (AV )req->data;
		281
		282	EXTEND (SP, AvFILL (av) + 1);
		283	for (i = 0; i <= AvFILL (av); ++i)
		284	PUSHs (*av_fetch (av, i, 0));
		285	}
		286	break;
		287
		288	case REQ_NOP:
		289	case REQ_SLEEP:
		290	break;
		291
		292	default:
		293	PUSHs (sv_2mortal (newSViv (req->result)));
		294	break;
		295	}
		296
		297
		298	PUTBACK;
		299	call_sv (req->callback, G_VOID \| G_EVAL);
		300	SPAGAIN;
		301
		302	FREETMPS;
		303	LEAVE;
		304
		305	errno = errorno;
		306
		307	if (SvTRUE (ERRSV))
		308	{
		309	req_free (req);
		310	croak (0);
		311	}
		312	}
		313
		314	static void req_free (aio_req req)
		315	{
		316	if (req->grp)
		317	{
		318	aio_req grp = req->grp;
		319
		320	/* unlink request */
		321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		323
		324	if (grp->grp_first == req)
		325	grp->grp_first = req->grp_next;
		326
		327	aio_grp_dec (grp);
		328	}
		329
		330	if (req->self)
		331	{
		332	sv_unmagic (req->self, PERL_MAGIC_ext);
		333	SvREFCNT_dec (req->self);
		334	}
		335
		336	SvREFCNT_dec (req->data);
		337	SvREFCNT_dec (req->fh);
		338	SvREFCNT_dec (req->fh2);
		339	SvREFCNT_dec (req->callback);
		340	Safefree (req->statdata);
		341
		342	if (req->type == REQ_READDIR && req->result >= 0)
		343	free (req->data2ptr);
		344
		345	Safefree (req);
		346	}
		347
		348	static void req_cancel (aio_req req)
		349	{
		350	req->flags \|= FLAG_CANCELLED;
		351
		352	if (req->type == REQ_GROUP)
		353	{
		354	aio_req sub;
		355
		356	for (sub = req->grp_first; sub; sub = sub->grp_next)
		357	req_cancel (sub);
		358	}
		359	}
		360
		361	static int poll_cb ()
104	{	362	{
105	dSP;	363	dSP;
106	int count = 0;	364	int count = 0;
107	int do_croak = 0;	365	int do_croak = 0;
108	aio_req req;	366	aio_req req;
…		…
116	{	374	{
117	ress = req->next;	375	ress = req->next;
118		376
119	if (!ress)	377	if (!ress)
120	{	378	{
121	rese = 0;
122
123	/* read any signals sent by the worker threads */	379	/* read any signals sent by the worker threads */
124	char buf [32];	380	char buf [32];
125	while (read (respipe [0], buf, 32) == 32)	381	while (read (respipe [0], buf, 32) == 32)
126	;	382	;
		383
		384	rese = 0;
127	}	385	}
128	}	386	}
129		387
130	pthread_mutex_unlock (&reslock);	388	pthread_mutex_unlock (&reslock);
131		389
132	if (!req)	390	if (!req)
133	break;	391	break;
134		392
135	nreqs--;	393	--nreqs;
136		394
137	if (req->type == REQ_QUIT)	395	if (req->type == REQ_QUIT)
138	started--;	396	started--;
		397	else if (req->type == REQ_GROUP && req->length)
		398	{
		399	req->fd = 1; /* mark request as delayed */
		400	continue;
		401	}
139	else	402	else
140	{	403	{
141	int errorno = errno;
142	errno = req->errorno;
143
144	if (req->type == REQ_READ)	404	if (req->type == REQ_READ)
145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146		406
147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	407	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
148	SvREADONLY_off (req->data);	408	SvREADONLY_off (req->data);
…		…
152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153	PL_laststatval = req->result;	413	PL_laststatval = req->result;
154	PL_statcache = *(req->statdata);	414	PL_statcache = *(req->statdata);
155	}	415	}
156		416
157	ENTER;	417	req_invoke (req);
158	PUSHMARK (SP);
159	XPUSHs (sv_2mortal (newSViv (req->result)));
160		418
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++;	419	count++;
193	}	420	}
194		421
195	free_req (req);	422	req_free (req);
196	}	423	}
197		424
198	return count;	425	return count;
199	}	426	}
200		427
201	static void aio_proc(void arg);	428	static void aio_proc(void arg);
202		429
203	static void
204	start_thread (void)	430	static void start_thread (void)
205	{	431	{
206	sigset_t fullsigset, oldsigset;	432	sigset_t fullsigset, oldsigset;
207	pthread_t tid;	433	pthread_t tid;
208	pthread_attr_t attr;	434	pthread_attr_t attr;
209		435
…		…
218	started++;	444	started++;
219		445
220	sigprocmask (SIG_SETMASK, &oldsigset, 0);	446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
221	}	447	}
222		448
223	static void	449	static void req_send (aio_req req)
224	send_req (aio_req req)
225	{	450	{
		451	while (started < wanted && nreqs >= started)
		452	start_thread ();
		453
226	nreqs++;	454	++nreqs;
227		455
228	pthread_mutex_lock (&reqlock);	456	pthread_mutex_lock (&reqlock);
229		457
230	req->next = 0;	458	req->next = 0;
231		459
…		…
250		478
251	poll_wait ();	479	poll_wait ();
252	}	480	}
253	}	481	}
254		482
255	static void	483	static void end_thread (void)
256	end_thread (void)
257	{	484	{
258	aio_req req;	485	aio_req req;
259	Newz (0, req, 1, aio_cb);	486	Newz (0, req, 1, aio_cb);
260	req->type = REQ_QUIT;	487	req->type = REQ_QUIT;
261		488
262	send_req (req);	489	req_send (req);
263	}	490	}
264		491
265	static void min_parallel (int nthreads)	492	static void min_parallel (int nthreads)
266	{	493	{
267	while (nthreads > started)	494	if (wanted < nthreads)
268	start_thread ();	495	wanted = nthreads;
269	}	496	}
270		497
271	static void max_parallel (int nthreads)	498	static void max_parallel (int nthreads)
272	{	499	{
273	int cur = started;	500	int cur = started;
274		501
		502	if (wanted > nthreads)
		503	wanted = nthreads;
		504
275	while (cur > nthreads)	505	while (cur > wanted)
276	{	506	{
277	end_thread ();	507	end_thread ();
278	cur--;	508	cur--;
279	}	509	}
280		510
281	while (started > nthreads)	511	while (started > wanted)
282	{	512	{
283	poll_wait ();	513	poll_wait ();
284	poll_cb ();	514	poll_cb ();
285	}	515	}
286	}	516	}
…		…
293	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");	524	croak ("cannot set result pipe to nonblocking mode");
295		525
296	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297	croak ("cannot set result pipe to nonblocking mode");	527	croak ("cannot set result pipe to nonblocking mode");
298	}
299
300	static void atfork_prepare (void)
301	{
302	pthread_mutex_lock (&reqlock);
303	pthread_mutex_lock (&reslock);
304	}
305
306	static void atfork_parent (void)
307	{
308	pthread_mutex_unlock (&reslock);
309	pthread_mutex_unlock (&reqlock);
310	}
311
312	static void atfork_child (void)
313	{
314	aio_req prv;
315
316	int restart = started;
317	started = 0;
318
319	while (reqs)
320	{
321	prv = reqs;
322	reqs = prv->next;
323	free_req (prv);
324	}
325
326	reqs = reqe = 0;
327
328	while (ress)
329	{
330	prv = ress;
331	ress = prv->next;
332	free_req (prv);
333	}
334
335	ress = rese = 0;
336
337	atfork_parent ();
338
339	min_parallel (restart);
340	}	528	}
341		529
342	/*****************************************************************************/	530	/*****************************************************************************/
343	/* work around various missing functions */	531	/* work around various missing functions */
344		532
…		…
349	/*	537	/*
350	* make our pread/pwrite safe against themselves, but not against	538	* make our pread/pwrite safe against themselves, but not against
351	* normal read/write by using a mutex. slows down execution a lot,	539	* normal read/write by using a mutex. slows down execution a lot,
352	* but that's your problem, not mine.	540	* but that's your problem, not mine.
353	*/	541	*/
354	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
355		543
356	static ssize_t	544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
357	pread (int fd, void *buf, size_t count, off_t offset)
358	{	545	{
359	ssize_t res;	546	ssize_t res;
360	off_t ooffset;	547	off_t ooffset;
361		548
362	pthread_mutex_lock (&iolock);	549	pthread_mutex_lock (&preadwritelock);
363	ooffset = lseek (fd, 0, SEEK_CUR);	550	ooffset = lseek (fd, 0, SEEK_CUR);
364	lseek (fd, offset, SEEK_SET);	551	lseek (fd, offset, SEEK_SET);
365	res = read (fd, buf, count);	552	res = read (fd, buf, count);
366	lseek (fd, ooffset, SEEK_SET);	553	lseek (fd, ooffset, SEEK_SET);
367	pthread_mutex_unlock (&iolock);	554	pthread_mutex_unlock (&preadwritelock);
368		555
369	return res;	556	return res;
370	}	557	}
371		558
372	static ssize_t
373	pwrite (int fd, void *buf, size_t count, off_t offset)	559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
374	{	560	{
375	ssize_t res;	561	ssize_t res;
376	off_t ooffset;	562	off_t ooffset;
377		563
378	pthread_mutex_lock (&iolock);	564	pthread_mutex_lock (&preadwritelock);
379	ooffset = lseek (fd, 0, SEEK_CUR);	565	ooffset = lseek (fd, 0, SEEK_CUR);
380	lseek (fd, offset, SEEK_SET);	566	lseek (fd, offset, SEEK_SET);
381	res = write (fd, buf, count);	567	res = write (fd, buf, count);
382	lseek (fd, offset, SEEK_SET);	568	lseek (fd, offset, SEEK_SET);
383	pthread_mutex_unlock (&iolock);	569	pthread_mutex_unlock (&preadwritelock);
384		570
385	return res;	571	return res;
386	}	572	}
387	#endif	573	#endif
388		574
…		…
391	#endif	577	#endif
392		578
393	#if !HAVE_READAHEAD	579	#if !HAVE_READAHEAD
394	# define readahead aio_readahead	580	# define readahead aio_readahead
395		581
		582	static ssize_t readahead (int fd, off_t offset, size_t count)
		583	{
396	static char readahead_buf[4096];	584	char readahead_buf[4096];
397		585
398	static ssize_t
399	readahead (int fd, off_t offset, size_t count)
400	{
401	while (count > 0)	586	while (count > 0)
402	{	587	{
403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
404		589
405	pread (fd, readahead_buf, len, offset);	590	pread (fd, readahead_buf, len, offset);
…		…
409		594
410	errno = 0;	595	errno = 0;
411	}	596	}
412	#endif	597	#endif
413		598
		599	#if !HAVE_READDIR_R
		600	# define readdir_r aio_readdir_r
		601
		602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		603
		604	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		605	{
		606	struct dirent *e;
		607	int errorno;
		608
		609	pthread_mutex_lock (&readdirlock);
		610
		611	e = readdir (dirp);
		612	errorno = errno;
		613
		614	if (e)
		615	{
		616	*res = ent;
		617	strcpy (ent->d_name, e->d_name);
		618	}
		619	else
		620	*res = 0;
		621
		622	pthread_mutex_unlock (&readdirlock);
		623
		624	errno = errorno;
		625	return e ? 0 : -1;
		626	}
		627	#endif
		628
		629	/* sendfile always needs emulation */
		630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		631	{
		632	ssize_t res;
		633
		634	if (!count)
		635	return 0;
		636
		637	#if HAVE_SENDFILE
		638	# if __linux
		639	res = sendfile (ofd, ifd, &offset, count);
		640
		641	# elif __freebsd
		642	/*
		643	* Of course, the freebsd sendfile is a dire hack with no thoughts
		644	* wasted on making it similar to other I/O functions.
		645	*/
		646	{
		647	off_t sbytes;
		648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		649
		650	if (res < 0 && sbytes)
		651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		652	res = sbytes;
		653	}
		654
		655	# elif __hpux
		656	res = sendfile (ofd, ifd, offset, count, 0, 0);
		657
		658	# elif __solaris
		659	{
		660	struct sendfilevec vec;
		661	size_t sbytes;
		662
		663	vec.sfv_fd = ifd;
		664	vec.sfv_flag = 0;
		665	vec.sfv_off = offset;
		666	vec.sfv_len = count;
		667
		668	res = sendfilev (ofd, &vec, 1, &sbytes);
		669
		670	if (res < 0 && sbytes)
		671	res = sbytes;
		672	}
		673
		674	# endif
		675	#else
		676	res = -1;
		677	errno = ENOSYS;
		678	#endif
		679
		680	if (res < 0
		681	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		682	#if __solaris
		683	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		684	#endif
		685	)
		686	)
		687	{
		688	/* emulate sendfile. this is a major pain in the ass */
		689	char buf[4096];
		690	res = 0;
		691
		692	while (count)
		693	{
		694	ssize_t cnt;
		695
		696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		697
		698	if (cnt <= 0)
		699	{
		700	if (cnt && !res) res = -1;
		701	break;
		702	}
		703
		704	cnt = write (ofd, buf, cnt);
		705
		706	if (cnt <= 0)
		707	{
		708	if (cnt && !res) res = -1;
		709	break;
		710	}
		711
		712	offset += cnt;
		713	res += cnt;
		714	count -= cnt;
		715	}
		716	}
		717
		718	return res;
		719	}
		720
		721	/* read a full directory */
		722	static int scandir_ (const char path, void *namesp)
		723	{
		724	DIR *dirp = opendir (path);
		725	union
		726	{
		727	struct dirent d;
		728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		729	} u;
		730	struct dirent *entp;
		731	char name, names;
		732	int memlen = 4096;
		733	int memofs = 0;
		734	int res = 0;
		735	int errorno;
		736
		737	if (!dirp)
		738	return -1;
		739
		740	names = malloc (memlen);
		741
		742	for (;;)
		743	{
		744	errno = 0, readdir_r (dirp, &u.d, &entp);
		745
		746	if (!entp)
		747	break;
		748
		749	name = entp->d_name;
		750
		751	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		752	{
		753	int len = strlen (name) + 1;
		754
		755	res++;
		756
		757	while (memofs + len > memlen)
		758	{
		759	memlen *= 2;
		760	names = realloc (names, memlen);
		761	if (!names)
		762	break;
		763	}
		764
		765	memcpy (names + memofs, name, len);
		766	memofs += len;
		767	}
		768	}
		769
		770	errorno = errno;
		771	closedir (dirp);
		772
		773	if (errorno)
		774	{
		775	free (names);
		776	errno = errorno;
		777	res = -1;
		778	}
		779
		780	namesp = (void )names;
		781	return res;
		782	}
		783
414	/*****************************************************************************/	784	/*****************************************************************************/
415		785
416	static void *
417	aio_proc (void *thr_arg)	786	static void aio_proc (void thr_arg)
418	{	787	{
419	aio_req req;	788	aio_req req;
420	int type;	789	int type;
421		790
422	do	791	do
…		…
440	}	809	}
441		810
442	pthread_mutex_unlock (&reqlock);	811	pthread_mutex_unlock (&reqlock);
443		812
444	errno = 0; /* strictly unnecessary */	813	errno = 0; /* strictly unnecessary */
		814	type = req->type; /* remember type for QUIT check */
445		815
446	type = req->type;	816	if (!(req->flags & FLAG_CANCELLED))
447
448	switch (type)	817	switch (type)
449	{	818	{
450	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
451	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
452		821
453	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		823	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
454		824
455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	826	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	827	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
458		828
459	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
460	case REQ_CLOSE: req->result = close (req->fd); break;	830	case REQ_CLOSE: req->result = close (req->fd); break;
461	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
462	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
463	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
464		836
465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
466	case REQ_FSYNC: req->result = fsync (req->fd); break;	838	case REQ_FSYNC: req->result = fsync (req->fd); break;
		839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
467		840
		841	case REQ_SLEEP:
		842	{
		843	struct timeval tv;
		844
		845	tv.tv_sec = req->fd;
		846	tv.tv_usec = req->fd2;
		847
		848	req->result = select (0, 0, 0, 0, &tv);
		849	}
		850
		851	case REQ_GROUP:
		852	case REQ_NOP:
468	case REQ_QUIT:	853	case REQ_QUIT:
469	break;	854	break;
470		855
471	default:	856	default:
472	req->result = ENOSYS;	857	req->result = ENOSYS;
473	break;	858	break;
474	}	859	}
475		860
476	req->errorno = errno;	861	req->errorno = errno;
477		862
478	pthread_mutex_lock (&reslock);	863	pthread_mutex_lock (&reslock);
479		864
…		…
497	while (type != REQ_QUIT);	882	while (type != REQ_QUIT);
498		883
499	return 0;	884	return 0;
500	}	885	}
501		886
		887	/*****************************************************************************/
		888
		889	static void atfork_prepare (void)
		890	{
		891	pthread_mutex_lock (&reqlock);
		892	pthread_mutex_lock (&reslock);
		893	#if !HAVE_PREADWRITE
		894	pthread_mutex_lock (&preadwritelock);
		895	#endif
		896	#if !HAVE_READDIR_R
		897	pthread_mutex_lock (&readdirlock);
		898	#endif
		899	}
		900
		901	static void atfork_parent (void)
		902	{
		903	#if !HAVE_READDIR_R
		904	pthread_mutex_unlock (&readdirlock);
		905	#endif
		906	#if !HAVE_PREADWRITE
		907	pthread_mutex_unlock (&preadwritelock);
		908	#endif
		909	pthread_mutex_unlock (&reslock);
		910	pthread_mutex_unlock (&reqlock);
		911	}
		912
		913	static void atfork_child (void)
		914	{
		915	aio_req prv;
		916
		917	started = 0;
		918
		919	while (reqs)
		920	{
		921	prv = reqs;
		922	reqs = prv->next;
		923	req_free (prv);
		924	}
		925
		926	reqs = reqe = 0;
		927
		928	while (ress)
		929	{
		930	prv = ress;
		931	ress = prv->next;
		932	req_free (prv);
		933	}
		934
		935	ress = rese = 0;
		936
		937	close (respipe [0]);
		938	close (respipe [1]);
		939	create_pipe ();
		940
		941	atfork_parent ();
		942	}
		943
502	#define dREQ \	944	#define dREQ \
503	aio_req req; \	945	aio_req req; \
		946	int req_pri = next_pri; \
		947	next_pri = DEFAULT_PRI + PRI_BIAS; \
504	\	948	\
505	if (SvOK (callback) && !SvROK (callback)) \	949	if (SvOK (callback) && !SvROK (callback)) \
506	croak ("clalback must be undef or of reference type"); \	950	croak ("callback must be undef or of reference type"); \
507	\	951	\
508	Newz (0, req, 1, aio_cb); \	952	Newz (0, req, 1, aio_cb); \
509	if (!req) \	953	if (!req) \
510	croak ("out of memory during aio_req allocation"); \	954	croak ("out of memory during aio_req allocation"); \
511	\	955	\
512	req->callback = newSVsv (callback);	956	req->callback = newSVsv (callback); \
		957	req->pri = req_pri
		958
		959	#define REQ_SEND \
		960	req_send (req); \
		961	\
		962	if (GIMME_V != G_VOID) \
		963	XPUSHs (req_sv (req, AIO_REQ_KLASS));
513		964
514	MODULE = IO::AIO PACKAGE = IO::AIO	965	MODULE = IO::AIO PACKAGE = IO::AIO
515		966
516	PROTOTYPES: ENABLE	967	PROTOTYPES: ENABLE
517		968
518	BOOT:	969	BOOT:
519	{	970	{
		971	HV *stash = gv_stashpv ("IO::AIO", 1);
		972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		975
520	create_pipe ();	976	create_pipe ();
521	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
522	}	978	}
523		979
524	void	980	void
525	min_parallel(nthreads)	981	min_parallel (nthreads)
526	int nthreads	982	int nthreads
527	PROTOTYPE: $	983	PROTOTYPE: $
528		984
529	void	985	void
530	max_parallel(nthreads)	986	max_parallel (nthreads)
531	int nthreads	987	int nthreads
532	PROTOTYPE: $	988	PROTOTYPE: $
533		989
534	int	990	int
535	max_outstanding(nreqs)	991	max_outstanding (nreqs)
536	int nreqs	992	int nreqs
537	PROTOTYPE: $	993	PROTOTYPE: $
538	CODE:	994	CODE:
539	RETVAL = max_outstanding;	995	RETVAL = max_outstanding;
540	max_outstanding = nreqs;	996	max_outstanding = nreqs;
541		997
542	void	998	void
543	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
544	SV * pathname	1000	SV * pathname
545	int flags	1001	int flags
546	int mode	1002	int mode
547	SV * callback	1003	SV * callback
548	PROTOTYPE: $$$;$	1004	PROTOTYPE: $$$;$
549	CODE:	1005	PPCODE:
550	{	1006	{
551	dREQ;	1007	dREQ;
552		1008
553	req->type = REQ_OPEN;	1009	req->type = REQ_OPEN;
554	req->data = newSVsv (pathname);	1010	req->data = newSVsv (pathname);
555	req->dataptr = SvPVbyte_nolen (req->data);	1011	req->dataptr = SvPVbyte_nolen (req->data);
556	req->fd = flags;	1012	req->fd = flags;
557	req->mode = mode;	1013	req->mode = mode;
558		1014
559	send_req (req);	1015	REQ_SEND;
560	}	1016	}
561		1017
562	void	1018	void
563	aio_close(fh,callback=&PL_sv_undef)	1019	aio_close (fh,callback=&PL_sv_undef)
564	SV * fh	1020	SV * fh
565	SV * callback	1021	SV * callback
566	PROTOTYPE: $;$	1022	PROTOTYPE: $;$
567	ALIAS:	1023	ALIAS:
568	aio_close = REQ_CLOSE	1024	aio_close = REQ_CLOSE
569	aio_fsync = REQ_FSYNC	1025	aio_fsync = REQ_FSYNC
570	aio_fdatasync = REQ_FDATASYNC	1026	aio_fdatasync = REQ_FDATASYNC
571	CODE:	1027	PPCODE:
572	{	1028	{
573	dREQ;	1029	dREQ;
574		1030
575	req->type = ix;	1031	req->type = ix;
576	req->fh = newSVsv (fh);	1032	req->fh = newSVsv (fh);
577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
578		1034
579	send_req (req);	1035	REQ_SEND (req);
580	}	1036	}
581		1037
582	void	1038	void
583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
584	SV * fh	1040	SV * fh
585	UV offset	1041	UV offset
586	IV length	1042	UV length
587	SV * data	1043	SV * data
588	IV dataoffset	1044	UV dataoffset
589	SV * callback	1045	SV * callback
590	ALIAS:	1046	ALIAS:
591	aio_read = REQ_READ	1047	aio_read = REQ_READ
592	aio_write = REQ_WRITE	1048	aio_write = REQ_WRITE
593	PROTOTYPE: $$$$$;$	1049	PROTOTYPE: $$$$$;$
594	CODE:	1050	PPCODE:
595	{	1051	{
596	aio_req req;	1052	aio_req req;
597	STRLEN svlen;	1053	STRLEN svlen;
598	char *svptr = SvPVbyte (data, svlen);	1054	char *svptr = SvPVbyte (data, svlen);
599		1055
…		…
637	{	1093	{
638	SvREADONLY_on (data);	1094	SvREADONLY_on (data);
639	req->data2ptr = (void *)data;	1095	req->data2ptr = (void *)data;
640	}	1096	}
641		1097
642	send_req (req);	1098	REQ_SEND;
643	}	1099	}
644	}	1100	}
645		1101
646	void	1102	void
		1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1104	SV * out_fh
		1105	SV * in_fh
		1106	UV in_offset
		1107	UV length
		1108	SV * callback
		1109	PROTOTYPE: $$$$;$
		1110	PPCODE:
		1111	{
		1112	dREQ;
		1113
		1114	req->type = REQ_SENDFILE;
		1115	req->fh = newSVsv (out_fh);
		1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1117	req->fh2 = newSVsv (in_fh);
		1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1119	req->offset = in_offset;
		1120	req->length = length;
		1121
		1122	REQ_SEND;
		1123	}
		1124
		1125	void
647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
648	SV * fh	1127	SV * fh
649	UV offset	1128	UV offset
650	IV length	1129	IV length
651	SV * callback	1130	SV * callback
652	PROTOTYPE: $$$;$	1131	PROTOTYPE: $$$;$
653	CODE:	1132	PPCODE:
654	{	1133	{
655	dREQ;	1134	dREQ;
656		1135
657	req->type = REQ_READAHEAD;	1136	req->type = REQ_READAHEAD;
658	req->fh = newSVsv (fh);	1137	req->fh = newSVsv (fh);
659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
660	req->offset = offset;	1139	req->offset = offset;
661	req->length = length;	1140	req->length = length;
662		1141
663	send_req (req);	1142	REQ_SEND;
664	}	1143	}
665		1144
666	void	1145	void
667	aio_stat(fh_or_path,callback=&PL_sv_undef)	1146	aio_stat (fh_or_path,callback=&PL_sv_undef)
668	SV * fh_or_path	1147	SV * fh_or_path
669	SV * callback	1148	SV * callback
670	ALIAS:	1149	ALIAS:
671	aio_stat = REQ_STAT	1150	aio_stat = REQ_STAT
672	aio_lstat = REQ_LSTAT	1151	aio_lstat = REQ_LSTAT
673	CODE:	1152	PPCODE:
674	{	1153	{
675	dREQ;	1154	dREQ;
676		1155
677	New (0, req->statdata, 1, Stat_t);	1156	New (0, req->statdata, 1, Stat_t);
678	if (!req->statdata)	1157	if (!req->statdata)
679	{	1158	{
680	free_req (req);	1159	req_free (req);
681	croak ("out of memory during aio_req->statdata allocation");	1160	croak ("out of memory during aio_req->statdata allocation");
682	}	1161	}
683		1162
684	if (SvPOK (fh_or_path))	1163	if (SvPOK (fh_or_path))
685	{	1164	{
…		…
692	req->type = REQ_FSTAT;	1171	req->type = REQ_FSTAT;
693	req->fh = newSVsv (fh_or_path);	1172	req->fh = newSVsv (fh_or_path);
694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
695	}	1174	}
696		1175
697	send_req (req);	1176	REQ_SEND;
698	}	1177	}
699		1178
700	void	1179	void
701	aio_unlink(pathname,callback=&PL_sv_undef)	1180	aio_unlink (pathname,callback=&PL_sv_undef)
702	SV * pathname	1181	SV * pathname
703	SV * callback	1182	SV * callback
704	ALIAS:	1183	ALIAS:
705	aio_unlink = REQ_UNLINK	1184	aio_unlink = REQ_UNLINK
706	aio_rmdir = REQ_RMDIR	1185	aio_rmdir = REQ_RMDIR
		1186	aio_readdir = REQ_READDIR
707	CODE:	1187	PPCODE:
708	{	1188	{
709	dREQ;	1189	dREQ;
710		1190
711	req->type = ix;	1191	req->type = ix;
712	req->data = newSVsv (pathname);	1192	req->data = newSVsv (pathname);
713	req->dataptr = SvPVbyte_nolen (req->data);	1193	req->dataptr = SvPVbyte_nolen (req->data);
714		1194
715	send_req (req);	1195	REQ_SEND;
716	}	1196	}
717		1197
718	void	1198	void
719	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)
720	SV * oldpath	1200	SV * oldpath
721	SV * newpath	1201	SV * newpath
722	SV * callback	1202	SV * callback
		1203	ALIAS:
		1204	aio_link = REQ_LINK
		1205	aio_symlink = REQ_SYMLINK
		1206	aio_rename = REQ_RENAME
723	CODE:	1207	PPCODE:
724	{	1208	{
725	dREQ;	1209	dREQ;
726		1210
727	req->type = REQ_SYMLINK;	1211	req->type = ix;
728	req->fh = newSVsv (oldpath);	1212	req->fh = newSVsv (oldpath);
729	req->data2ptr = SvPVbyte_nolen (req->fh);	1213	req->data2ptr = SvPVbyte_nolen (req->fh);
730	req->data = newSVsv (newpath);	1214	req->data = newSVsv (newpath);
731	req->dataptr = SvPVbyte_nolen (req->data);	1215	req->dataptr = SvPVbyte_nolen (req->data);
732		1216
733	send_req (req);	1217	REQ_SEND;
734	}	1218	}
735		1219
736	void	1220	void
		1221	aio_sleep (delay,callback=&PL_sv_undef)
		1222	double delay
		1223	SV * callback
		1224	PPCODE:
		1225	{
		1226	dREQ;
		1227
		1228	req->type = REQ_SLEEP;
		1229	req->fd = delay < 0. ? 0 : delay;
		1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1231
		1232	REQ_SEND;
		1233	}
		1234
		1235	void
		1236	aio_group (callback=&PL_sv_undef)
		1237	SV * callback
		1238	PROTOTYPE: ;$
		1239	PPCODE:
		1240	{
		1241	dREQ;
		1242
		1243	req->type = REQ_GROUP;
		1244	req_send (req);
		1245
		1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1247	}
		1248
		1249	void
		1250	aio_nop (callback=&PL_sv_undef)
		1251	SV * callback
		1252	PPCODE:
		1253	{
		1254	dREQ;
		1255
		1256	req->type = REQ_NOP;
		1257
		1258	REQ_SEND;
		1259	}
		1260
		1261	#if 0
		1262
		1263	void
		1264	aio_pri (int pri = DEFAULT_PRI)
		1265	CODE:
		1266	if (pri < PRI_MIN) pri = PRI_MIN;
		1267	if (pri > PRI_MAX) pri = PRI_MAX;
		1268	next_pri = pri + PRI_BIAS;
		1269
		1270	#endif
		1271
		1272	void
737	flush()	1273	flush ()
738	PROTOTYPE:	1274	PROTOTYPE:
739	CODE:	1275	CODE:
740	while (nreqs)	1276	while (nreqs)
741	{	1277	{
742	poll_wait ();	1278	poll_wait ();
…		…
782	CODE:	1318	CODE:
783	RETVAL = nreqs;	1319	RETVAL = nreqs;
784	OUTPUT:	1320	OUTPUT:
785	RETVAL	1321	RETVAL
786		1322
		1323	PROTOTYPES: DISABLE
		1324
		1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1326
		1327	void
		1328	cancel (aio_req_ornot req)
		1329	PROTOTYPE:
		1330	CODE:
		1331	req_cancel (req);
		1332
		1333	void
		1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1335	CODE:
		1336	SvREFCNT_dec (req->callback);
		1337	req->callback = newSVsv (callback);
		1338
		1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1340
		1341	void
		1342	add (aio_req grp, ...)
		1343	PPCODE:
		1344	{
		1345	int i;
		1346	aio_req req;
		1347
		1348	if (grp->fd == 2)
		1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1350
		1351	for (i = 1; i < items; ++i )
		1352	{
		1353	if (GIMME_V != G_VOID)
		1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1355
		1356	req = SvAIO_REQ (ST (i));
		1357
		1358	if (req)
		1359	{
		1360	++grp->length;
		1361	req->grp = grp;
		1362
		1363	req->grp_prev = 0;
		1364	req->grp_next = grp->grp_first;
		1365
		1366	if (grp->grp_first)
		1367	grp->grp_first->grp_prev = req;
		1368
		1369	grp->grp_first = req;
		1370	}
		1371	}
		1372	}
		1373
		1374	void
		1375	result (aio_req grp, ...)
		1376	CODE:
		1377	{
		1378	int i;
		1379	AV *av = newAV ();
		1380
		1381	for (i = 1; i < items; ++i )
		1382	av_push (av, newSVsv (ST (i)));
		1383
		1384	SvREFCNT_dec (grp->data);
		1385	grp->data = (SV *)av;
		1386	}
		1387
		1388	void
		1389	feed_limit (aio_req grp, int limit)
		1390	CODE:
		1391	grp->fd2 = limit;
		1392	aio_grp_feed (grp);
		1393
		1394	void
		1395	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1396	CODE:
		1397	{
		1398	SvREFCNT_dec (grp->fh2);
		1399	grp->fh2 = newSVsv (callback);
		1400
		1401	if (grp->fd2 <= 0)
		1402	grp->fd2 = 2;
		1403
		1404	aio_grp_feed (grp);
		1405	}
		1406

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs. Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC