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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.35 by root, Tue Aug 23 01:16:50 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
10	#include <pthread.h>	15	#include <pthread.h>
11		16
		17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
12	#include <sys/types.h>	21	#include <sys/types.h>
13	#include <sys/stat.h>	22	#include <sys/stat.h>
14		23	#include <limits.h>
15	#include <unistd.h>	24	#include <unistd.h>
16	#include <fcntl.h>	25	#include <fcntl.h>
17	#include <signal.h>	26	#include <signal.h>
18	#include <sched.h>	27	#include <sched.h>
19		28
30	# else	39	# else
31	# error sendfile support requested but not available	40	# error sendfile support requested but not available
32	# endif	41	# endif
33	#endif	42	#endif
34		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
		47	#endif
		48
35	#if __ia64	49	#if __ia64
36	# define STACKSIZE 65536	50	# define STACKSIZE 65536
37	#else	51	#else
38	# define STACKSIZE 4096	52	# define STACKSIZE 8192
39	#endif	53	#endif
40		54
41	enum {	55	enum {
42	REQ_QUIT,	56	REQ_QUIT,
43	REQ_OPEN, REQ_CLOSE,	57	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,	58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,	59	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,	61	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,	62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49	REQ_SYMLINK,	63	REQ_READDIR,
		64	REQ_LINK, REQ_SYMLINK,
		65	REQ_GROUP, REQ_NOP,
		66	REQ_SLEEP,
50	};	67	};
51		68
		69	#define AIO_REQ_KLASS "IO::AIO::REQ"
		70	#define AIO_GRP_KLASS "IO::AIO::GRP"
		71
52	typedef struct aio_cb {	72	typedef struct aio_cb
		73	{
53	struct aio_cb *volatile next;	74	struct aio_cb *volatile next;
54		75
55	int type;	76	SV data, callback;
56		77	SV fh, fh2;
57	int fd, fd2;	78	void dataptr, data2ptr;
		79	Stat_t *statdata;
58	off_t offset;	80	off_t offset;
59	size_t length;	81	size_t length;
60	ssize_t result;	82	ssize_t result;
		83
		84	STRLEN dataoffset;
		85	int type;
		86	int fd, fd2;
		87	int errorno;
61	mode_t mode; /* open */	88	mode_t mode; /* open */
62	int errorno;
63	SV data, callback;
64	SV fh, fh2;
65	void dataptr, data2ptr;
66	STRLEN dataoffset;
67		89
68	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;
69	} aio_cb;	95	} aio_cb;
70		96
		97	enum {
		98	FLAG_CANCELLED = 0x01,
		99	};
		100
71	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;
72		113
73	static int started, wanted;	114	static int started, wanted;
74	static volatile int nreqs;	115	static volatile int nreqs;
75	static int max_outstanding = 1<<30;	116	static int max_outstanding = 1<<30;
76	static int respipe [2];	117	static int respipe [2];
77		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
78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		128
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	129	static volatile aio_req reqs, reqe; /* queue start, queue end */
83	static volatile aio_req ress, rese; /* queue start, queue end */	130	static volatile aio_req ress, rese; /* queue start, queue end */
84		131
		132	static void req_invoke (aio_req req);
85	static void free_req (aio_req req)	133	static void req_free (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		134
		135	/* must be called at most once */
		136	static SV req_sv (aio_req req, const char klass)
		137	{
90	if (req->fh)	138	if (!req->self)
91	SvREFCNT_dec (req->fh);	139	{
		140	req->self = (SV *)newHV ();
		141	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		142	}
92		143
93	if (req->fh2)	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	{
94	SvREFCNT_dec (req->fh2);	183	SvREFCNT_dec (grp->fh2);
95		184	grp->fh2 = 0;
96	if (req->statdata)	185	break;
97	Safefree (req->statdata);	186	}
98
99	if (req->callback)
100	SvREFCNT_dec (req->callback);
101
102	Safefree (req);
103	}
104
105	static void
106	poll_wait ()
107	{
108	if (nreqs && !ress)
109	{	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	{
110	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
111	FD_ZERO(&rfd);	219	FD_ZERO(&rfd);
112	FD_SET(respipe [0], &rfd);	220	FD_SET(respipe [0], &rfd);
113		221
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	222	select (respipe [0] + 1, &rfd, 0, 0, 0);
115	}	223	}
116	}	224	}
117		225
118	static int	226	static void req_invoke (aio_req req)
119	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 ()
120	{	373	{
121	dSP;	374	dSP;
122	int count = 0;	375	int count = 0;
123	int do_croak = 0;	376	int do_croak = 0;
124	aio_req req;	377	aio_req req;
…		…
146	pthread_mutex_unlock (&reslock);	399	pthread_mutex_unlock (&reslock);
147		400
148	if (!req)	401	if (!req)
149	break;	402	break;
150		403
151	nreqs--;	404	--nreqs;
152		405
153	if (req->type == REQ_QUIT)	406	if (req->type == REQ_QUIT)
154	started--;	407	started--;
		408	else if (req->type == REQ_GROUP && req->length)
		409	{
		410	req->fd = 1; /* mark request as delayed */
		411	continue;
		412	}
155	else	413	else
156	{	414	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	415	if (req->type == REQ_READ)
161	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));
162		417
163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	418	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	419	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	424	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	425	PL_statcache = *(req->statdata);
171	}	426	}
172		427
173	ENTER;	428	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		429
177	if (req->type == REQ_OPEN)
178	{
179	/* convert fd to fh */
180	SV *fh;
181
182	PUTBACK;
183	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
184	SPAGAIN;
185
186	fh = SvREFCNT_inc (POPs);
187
188	PUSHMARK (SP);
189	XPUSHs (sv_2mortal (fh));
190	}
191
192	if (SvOK (req->callback))
193	{
194	PUTBACK;
195	call_sv (req->callback, G_VOID \| G_EVAL);
196	SPAGAIN;
197
198	if (SvTRUE (ERRSV))
199	{
200	free_req (req);
201	croak (0);
202	}
203	}
204
205	LEAVE;
206
207	errno = errorno;
208	count++;	430	count++;
209	}	431	}
210		432
211	free_req (req);	433	req_free (req);
212	}	434	}
213		435
214	return count;	436	return count;
215	}	437	}
216		438
217	static void aio_proc(void arg);	439	static void aio_proc(void arg);
218		440
219	static void
220	start_thread (void)	441	static void start_thread (void)
221	{	442	{
222	sigset_t fullsigset, oldsigset;	443	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	444	pthread_t tid;
224	pthread_attr_t attr;	445	pthread_attr_t attr;
225		446
…		…
234	started++;	455	started++;
235		456
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	458	}
238		459
239	static void	460	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	461	{
242	while (started < wanted && nreqs >= started)	462	while (started < wanted && nreqs >= started)
243	start_thread ();	463	start_thread ();
244		464
245	nreqs++;	465	++nreqs;
246		466
247	pthread_mutex_lock (&reqlock);	467	pthread_mutex_lock (&reqlock);
248		468
249	req->next = 0;	469	req->next = 0;
250		470
…		…
269		489
270	poll_wait ();	490	poll_wait ();
271	}	491	}
272	}	492	}
273		493
274	static void	494	static void end_thread (void)
275	end_thread (void)
276	{	495	{
277	aio_req req;	496	aio_req req;
278	Newz (0, req, 1, aio_cb);	497	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;	498	req->type = REQ_QUIT;
280		499
281	send_req (req);	500	req_send (req);
282	}	501	}
283		502
284	static void min_parallel (int nthreads)	503	static void min_parallel (int nthreads)
285	{	504	{
286	if (wanted < nthreads)	505	if (wanted < nthreads)
…		…
316	croak ("cannot set result pipe to nonblocking mode");	535	croak ("cannot set result pipe to nonblocking mode");
317		536
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	538	croak ("cannot set result pipe to nonblocking mode");
320	}	539	}
321
322	static void atfork_prepare (void)
323	{
324	pthread_mutex_lock (&reqlock);
325	pthread_mutex_lock (&reslock);
326	}
327
328	static void atfork_parent (void)
329	{
330	pthread_mutex_unlock (&reslock);
331	pthread_mutex_unlock (&reqlock);
332	}
333
334	static void atfork_child (void)
335	{
336	aio_req prv;
337
338	started = 0;
339
340	while (reqs)
341	{
342	prv = reqs;
343	reqs = prv->next;
344	free_req (prv);
345	}
346
347	reqs = reqe = 0;
348
349	while (ress)
350	{
351	prv = ress;
352	ress = prv->next;
353	free_req (prv);
354	}
355
356	ress = rese = 0;
357
358	close (respipe [0]);
359	close (respipe [1]);
360	create_pipe ();
361
362	atfork_parent ();
363	}
364
365	/* currently noops */
366	#define LOCK_FD(fd) do { } while (0)
367	#define UNLOCK_FD(fd) do { } while (0)
368		540
369	/*****************************************************************************/	541	/*****************************************************************************/
370	/* work around various missing functions */	542	/* work around various missing functions */
371		543
372	#if !HAVE_PREADWRITE	544	#if !HAVE_PREADWRITE
…		…
376	/*	548	/*
377	* make our pread/pwrite safe against themselves, but not against	549	* make our pread/pwrite safe against themselves, but not against
378	* 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,
379	* but that's your problem, not mine.	551	* but that's your problem, not mine.
380	*/	552	*/
381	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
382		554
383	static ssize_t	555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
384	pread (int fd, void *buf, size_t count, off_t offset)
385	{	556	{
386	ssize_t res;	557	ssize_t res;
387	off_t ooffset;	558	off_t ooffset;
388		559
389	LOCK_FD (fd);	560	pthread_mutex_lock (&preadwritelock);
390	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
391	ooffset = lseek (fd, 0, SEEK_CUR);	561	ooffset = lseek (fd, 0, SEEK_CUR);
392	lseek (fd, offset, SEEK_SET);	562	lseek (fd, offset, SEEK_SET);
393	res = read (fd, buf, count);	563	res = read (fd, buf, count);
394	lseek (fd, ooffset, SEEK_SET);	564	lseek (fd, ooffset, SEEK_SET);
395	pthread_mutex_unlock (&iolock);	565	pthread_mutex_unlock (&preadwritelock);
396	UNLOCK_FD (d);
397		566
398	return res;	567	return res;
399	}	568	}
400		569
401	static ssize_t
402	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)
403	{	571	{
404	ssize_t res;	572	ssize_t res;
405	off_t ooffset;	573	off_t ooffset;
406		574
407	LOCK_FD (fd);	575	pthread_mutex_lock (&preadwritelock);
408	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409	ooffset = lseek (fd, 0, SEEK_CUR);	576	ooffset = lseek (fd, 0, SEEK_CUR);
410	lseek (fd, offset, SEEK_SET);	577	lseek (fd, offset, SEEK_SET);
411	res = write (fd, buf, count);	578	res = write (fd, buf, count);
412	lseek (fd, offset, SEEK_SET);	579	lseek (fd, offset, SEEK_SET);
413	pthread_mutex_unlock (&iolock);	580	pthread_mutex_unlock (&preadwritelock);
414	UNLOCK_FD (d);
415		581
416	return res;	582	return res;
417	}	583	}
418	#endif	584	#endif
419		585
…		…
422	#endif	588	#endif
423		589
424	#if !HAVE_READAHEAD	590	#if !HAVE_READAHEAD
425	# define readahead aio_readahead	591	# define readahead aio_readahead
426		592
		593	static ssize_t readahead (int fd, off_t offset, size_t count)
		594	{
427	static char readahead_buf[4096];	595	char readahead_buf[4096];
428		596
429	static ssize_t
430	readahead (int fd, off_t offset, size_t count)
431	{
432	while (count > 0)	597	while (count > 0)
433	{	598	{
434	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
435		600
436	pread (fd, readahead_buf, len, offset);	601	pread (fd, readahead_buf, len, offset);
…		…
440		605
441	errno = 0;	606	errno = 0;
442	}	607	}
443	#endif	608	#endif
444		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
445	/* sendfile always needs emulation */	640	/* sendfile always needs emulation */
446	static ssize_t
447	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448	{	642	{
449	ssize_t res;	643	ssize_t res;
450		644
451	if (!count)	645	if (!count)
452	return 0;	646	return 0;
453
454	LOCK_FD (ofd);
455		647
456	#if HAVE_SENDFILE	648	#if HAVE_SENDFILE
457	# if __linux	649	# if __linux
458	res = sendfile (ofd, ifd, &offset, count);	650	res = sendfile (ofd, ifd, &offset, count);
459		651
460	# elif __freebsd	652	# elif __freebsd
461	/*	653	/*
462	* Of course, the freebsd sendfile is a dire hack with no thoughts	654	* Of course, the freebsd sendfile is a dire hack with no thoughts
463	* wasted on making it similar to other I/O functions.	655	* wasted on making it similar to other I/O functions.
464	*/	656	*/
465	{	657	{
466	off_t sbytes;	658	off_t sbytes;
467	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468		660
469	if (res < 0 && sbytes)	661	if (res < 0 && sbytes)
470	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471	res = sbytes;	663	res = sbytes;
472	}	664	}
473		665
474	# elif __hpux	666	# elif __hpux
475	res = sendfile (ofd, ifd, offset, count, 0, 0);	667	res = sendfile (ofd, ifd, offset, count, 0, 0);
476		668
477	# elif __solaris	669	# elif __solaris
478	{	670	{
479	struct sendfilevec vec;	671	struct sendfilevec vec;
480	size_t sbytes;	672	size_t sbytes;
481		673
482	vec.sfv_fd = ifd;	674	vec.sfv_fd = ifd;
483	vec.sfv_flag = 0;	675	vec.sfv_flag = 0;
484	vec.sfv_off = offset;	676	vec.sfv_off = offset;
485	vec.sfv_len = count;	677	vec.sfv_len = count;
486		678
487	res = sendfilev (ofd, &vec, 1, &sbytes);	679	res = sendfilev (ofd, &vec, 1, &sbytes);
488		680
489	if (res < 0 && sbytes)	681	if (res < 0 && sbytes)
490	res = sbytes;	682	res = sbytes;
491	}	683	}
492		684
493	# else
494	res = -1;
495	errno = ENOSYS;
496	# endif	685	# endif
		686	#else
		687	res = -1;
		688	errno = ENOSYS;
497	#endif	689	#endif
498		690
499	if (res < 0	691	if (res < 0
500	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	692	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
501	#if __solaris	693	#if __solaris
502	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	694	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
503	#endif	695	#endif
504	)	696	)
505	)	697	)
506	{	698	{
507	/* emulate sendfile. this is a major pain in the ass */	699	/* emulate sendfile. this is a major pain in the ass */
508	char *buf = malloc (4096);	700	char buf[4096];
509	res = 0;	701	res = 0;
510		702
511	for (;;)	703	while (count)
512	{	704	{
513	ssize_t cnt;	705	ssize_t cnt;
514		706
515	cnt = pread (ifd, buf, 4096, offset);	707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
516		708
517	if (cnt <= 0)	709	if (cnt <= 0)
518	{	710	{
519	if (cnt && !res) res = -1;	711	if (cnt && !res) res = -1;
520	break;	712	break;
521	}	713	}
522		714
523	cnt = write (ofd, buf, cnt);	715	cnt = write (ofd, buf, cnt);
524		716
525	if (cnt <= 0)	717	if (cnt <= 0)
526	{	718	{
527	if (cnt && !res) res = -1;	719	if (cnt && !res) res = -1;
528	break;	720	break;
529	}	721	}
530		722
531	offset += cnt;	723	offset += cnt;
532	res += cnt;	724	res += cnt;
		725	count -= cnt;
533	}	726	}
534
535	{
536	int errorno = errno;
537	free (buf);
538	errno = errorno;
539	}
540	}	727	}
541		728
542	UNLOCK_FD (ofd);
543
544	return res;	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;
545	}	793	}
546		794
547	/*****************************************************************************/	795	/*****************************************************************************/
548		796
549	static void *
550	aio_proc (void *thr_arg)	797	static void aio_proc (void thr_arg)
551	{	798	{
552	aio_req req;	799	aio_req req;
553	int type;	800	int type;
554		801
555	do	802	do
…		…
573	}	820	}
574		821
575	pthread_mutex_unlock (&reqlock);	822	pthread_mutex_unlock (&reqlock);
576		823
577	errno = 0; /* strictly unnecessary */	824	errno = 0; /* strictly unnecessary */
		825	type = req->type; /* remember type for QUIT check */
578		826
579	type = req->type;	827	if (!(req->flags & FLAG_CANCELLED))
580
581	switch (type)	828	switch (type)
582	{	829	{
583	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;
584	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;
585		832
586	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;
587	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588		835
589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592		839
593	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;
594	case REQ_CLOSE: req->result = close (req->fd); break;	841	case REQ_CLOSE: req->result = close (req->fd); break;
595	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596	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;
597	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598		847
599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600	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;
601		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:
602	case REQ_QUIT:	864	case REQ_QUIT:
603	break;	865	break;
604		866
605	default:	867	default:
606	req->result = ENOSYS;	868	req->result = ENOSYS;
607	break;	869	break;
608	}	870	}
609		871
610	req->errorno = errno;	872	req->errorno = errno;
611		873
612	pthread_mutex_lock (&reslock);	874	pthread_mutex_lock (&reslock);
613		875
…		…
631	while (type != REQ_QUIT);	893	while (type != REQ_QUIT);
632		894
633	return 0;	895	return 0;
634	}	896	}
635		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
636	#define dREQ \	955	#define dREQ \
637	aio_req req; \	956	aio_req req; \
		957	int req_pri = next_pri; \
		958	next_pri = DEFAULT_PRI + PRI_BIAS; \
638	\	959	\
639	if (SvOK (callback) && !SvROK (callback)) \	960	if (SvOK (callback) && !SvROK (callback)) \
640	croak ("clalback must be undef or of reference type"); \	961	croak ("callback must be undef or of reference type"); \
641	\	962	\
642	Newz (0, req, 1, aio_cb); \	963	Newz (0, req, 1, aio_cb); \
643	if (!req) \	964	if (!req) \
644	croak ("out of memory during aio_req allocation"); \	965	croak ("out of memory during aio_req allocation"); \
645	\	966	\
646	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));
647		975
648	MODULE = IO::AIO PACKAGE = IO::AIO	976	MODULE = IO::AIO PACKAGE = IO::AIO
649		977
650	PROTOTYPES: ENABLE	978	PROTOTYPES: ENABLE
651		979
652	BOOT:	980	BOOT:
653	{	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
654	create_pipe ();	987	create_pipe ();
655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
656	}	989	}
657		990
658	void	991	void
659	min_parallel(nthreads)	992	min_parallel (nthreads)
660	int nthreads	993	int nthreads
661	PROTOTYPE: $	994	PROTOTYPE: $
662		995
663	void	996	void
664	max_parallel(nthreads)	997	max_parallel (nthreads)
665	int nthreads	998	int nthreads
666	PROTOTYPE: $	999	PROTOTYPE: $
667		1000
668	int	1001	int
669	max_outstanding(nreqs)	1002	max_outstanding (nreqs)
670	int nreqs	1003	int nreqs
671	PROTOTYPE: $	1004	PROTOTYPE: $
672	CODE:	1005	CODE:
673	RETVAL = max_outstanding;	1006	RETVAL = max_outstanding;
674	max_outstanding = nreqs;	1007	max_outstanding = nreqs;
675		1008
676	void	1009	void
677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
678	SV * pathname	1011	SV * pathname
679	int flags	1012	int flags
680	int mode	1013	int mode
681	SV * callback	1014	SV * callback
682	PROTOTYPE: $$$;$	1015	PROTOTYPE: $$$;$
683	CODE:	1016	PPCODE:
684	{	1017	{
685	dREQ;	1018	dREQ;
686		1019
687	req->type = REQ_OPEN;	1020	req->type = REQ_OPEN;
688	req->data = newSVsv (pathname);	1021	req->data = newSVsv (pathname);
689	req->dataptr = SvPVbyte_nolen (req->data);	1022	req->dataptr = SvPVbyte_nolen (req->data);
690	req->fd = flags;	1023	req->fd = flags;
691	req->mode = mode;	1024	req->mode = mode;
692		1025
693	send_req (req);	1026	REQ_SEND;
694	}	1027	}
695		1028
696	void	1029	void
697	aio_close(fh,callback=&PL_sv_undef)	1030	aio_close (fh,callback=&PL_sv_undef)
698	SV * fh	1031	SV * fh
699	SV * callback	1032	SV * callback
700	PROTOTYPE: $;$	1033	PROTOTYPE: $;$
701	ALIAS:	1034	ALIAS:
702	aio_close = REQ_CLOSE	1035	aio_close = REQ_CLOSE
703	aio_fsync = REQ_FSYNC	1036	aio_fsync = REQ_FSYNC
704	aio_fdatasync = REQ_FDATASYNC	1037	aio_fdatasync = REQ_FDATASYNC
705	CODE:	1038	PPCODE:
706	{	1039	{
707	dREQ;	1040	dREQ;
708		1041
709	req->type = ix;	1042	req->type = ix;
710	req->fh = newSVsv (fh);	1043	req->fh = newSVsv (fh);
711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
712		1045
713	send_req (req);	1046	REQ_SEND (req);
714	}	1047	}
715		1048
716	void	1049	void
717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
718	SV * fh	1051	SV * fh
719	UV offset	1052	UV offset
720	UV length	1053	UV length
721	SV * data	1054	SV * data
722	UV dataoffset	1055	UV dataoffset
723	SV * callback	1056	SV * callback
724	ALIAS:	1057	ALIAS:
725	aio_read = REQ_READ	1058	aio_read = REQ_READ
726	aio_write = REQ_WRITE	1059	aio_write = REQ_WRITE
727	PROTOTYPE: $$$$$;$	1060	PROTOTYPE: $$$$$;$
728	CODE:	1061	PPCODE:
729	{	1062	{
730	aio_req req;	1063	aio_req req;
731	STRLEN svlen;	1064	STRLEN svlen;
732	char *svptr = SvPVbyte (data, svlen);	1065	char *svptr = SvPVbyte (data, svlen);
733		1066
…		…
771	{	1104	{
772	SvREADONLY_on (data);	1105	SvREADONLY_on (data);
773	req->data2ptr = (void *)data;	1106	req->data2ptr = (void *)data;
774	}	1107	}
775		1108
776	send_req (req);	1109	REQ_SEND;
777	}	1110	}
778	}	1111	}
779		1112
780	void	1113	void
781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
782	SV * out_fh	1115	SV * out_fh
783	SV * in_fh	1116	SV * in_fh
784	UV in_offset	1117	UV in_offset
785	UV length	1118	UV length
786	SV * callback	1119	SV * callback
787	PROTOTYPE: $$$$;$	1120	PROTOTYPE: $$$$;$
788	CODE:	1121	PPCODE:
789	{	1122	{
790	dREQ;	1123	dREQ;
791		1124
792	req->type = REQ_SENDFILE;	1125	req->type = REQ_SENDFILE;
793	req->fh = newSVsv (out_fh);	1126	req->fh = newSVsv (out_fh);
…		…
795	req->fh2 = newSVsv (in_fh);	1128	req->fh2 = newSVsv (in_fh);
796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
797	req->offset = in_offset;	1130	req->offset = in_offset;
798	req->length = length;	1131	req->length = length;
799		1132
800	send_req (req);	1133	REQ_SEND;
801	}	1134	}
802		1135
803	void	1136	void
804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
805	SV * fh	1138	SV * fh
806	UV offset	1139	UV offset
807	IV length	1140	IV length
808	SV * callback	1141	SV * callback
809	PROTOTYPE: $$$;$	1142	PROTOTYPE: $$$;$
810	CODE:	1143	PPCODE:
811	{	1144	{
812	dREQ;	1145	dREQ;
813		1146
814	req->type = REQ_READAHEAD;	1147	req->type = REQ_READAHEAD;
815	req->fh = newSVsv (fh);	1148	req->fh = newSVsv (fh);
816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
817	req->offset = offset;	1150	req->offset = offset;
818	req->length = length;	1151	req->length = length;
819		1152
820	send_req (req);	1153	REQ_SEND;
821	}	1154	}
822		1155
823	void	1156	void
824	aio_stat(fh_or_path,callback=&PL_sv_undef)	1157	aio_stat (fh_or_path,callback=&PL_sv_undef)
825	SV * fh_or_path	1158	SV * fh_or_path
826	SV * callback	1159	SV * callback
827	ALIAS:	1160	ALIAS:
828	aio_stat = REQ_STAT	1161	aio_stat = REQ_STAT
829	aio_lstat = REQ_LSTAT	1162	aio_lstat = REQ_LSTAT
830	CODE:	1163	PPCODE:
831	{	1164	{
832	dREQ;	1165	dREQ;
833		1166
834	New (0, req->statdata, 1, Stat_t);	1167	New (0, req->statdata, 1, Stat_t);
835	if (!req->statdata)	1168	if (!req->statdata)
836	{	1169	{
837	free_req (req);	1170	req_free (req);
838	croak ("out of memory during aio_req->statdata allocation");	1171	croak ("out of memory during aio_req->statdata allocation");
839	}	1172	}
840		1173
841	if (SvPOK (fh_or_path))	1174	if (SvPOK (fh_or_path))
842	{	1175	{
…		…
849	req->type = REQ_FSTAT;	1182	req->type = REQ_FSTAT;
850	req->fh = newSVsv (fh_or_path);	1183	req->fh = newSVsv (fh_or_path);
851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852	}	1185	}
853		1186
854	send_req (req);	1187	REQ_SEND;
855	}	1188	}
856		1189
857	void	1190	void
858	aio_unlink(pathname,callback=&PL_sv_undef)	1191	aio_unlink (pathname,callback=&PL_sv_undef)
859	SV * pathname	1192	SV * pathname
860	SV * callback	1193	SV * callback
861	ALIAS:	1194	ALIAS:
862	aio_unlink = REQ_UNLINK	1195	aio_unlink = REQ_UNLINK
863	aio_rmdir = REQ_RMDIR	1196	aio_rmdir = REQ_RMDIR
		1197	aio_readdir = REQ_READDIR
864	CODE:	1198	PPCODE:
865	{	1199	{
866	dREQ;	1200	dREQ;
867		1201
868	req->type = ix;	1202	req->type = ix;
869	req->data = newSVsv (pathname);	1203	req->data = newSVsv (pathname);
870	req->dataptr = SvPVbyte_nolen (req->data);	1204	req->dataptr = SvPVbyte_nolen (req->data);
871		1205
872	send_req (req);	1206	REQ_SEND;
873	}	1207	}
874		1208
875	void	1209	void
876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)
877	SV * oldpath	1211	SV * oldpath
878	SV * newpath	1212	SV * newpath
879	SV * callback	1213	SV * callback
		1214	ALIAS:
		1215	aio_link = REQ_LINK
		1216	aio_symlink = REQ_SYMLINK
		1217	aio_rename = REQ_RENAME
880	CODE:	1218	PPCODE:
881	{	1219	{
882	dREQ;	1220	dREQ;
883		1221
884	req->type = REQ_SYMLINK;	1222	req->type = ix;
885	req->fh = newSVsv (oldpath);	1223	req->fh = newSVsv (oldpath);
886	req->data2ptr = SvPVbyte_nolen (req->fh);	1224	req->data2ptr = SvPVbyte_nolen (req->fh);
887	req->data = newSVsv (newpath);	1225	req->data = newSVsv (newpath);
888	req->dataptr = SvPVbyte_nolen (req->data);	1226	req->dataptr = SvPVbyte_nolen (req->data);
889		1227
890	send_req (req);	1228	REQ_SEND;
891	}	1229	}
892		1230
893	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
894	flush()	1284	flush ()
895	PROTOTYPE:	1285	PROTOTYPE:
896	CODE:	1286	CODE:
897	while (nreqs)	1287	while (nreqs)
898	{	1288	{
899	poll_wait ();	1289	poll_wait ();
…		…
939	CODE:	1329	CODE:
940	RETVAL = nreqs;	1330	RETVAL = nreqs;
941	OUTPUT:	1331	OUTPUT:
942	RETVAL	1332	RETVAL
943		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 1.35 by root, Tue Aug 23 01:16:50 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 1.35 by root, Tue Aug 23 01:16:50 2005 UTC vs.
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC