[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 1.63 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;
59		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;
		113
60	static int started;	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;
116	{	385	{
117	ress = req->next;	386	ress = req->next;
118		387
119	if (!ress)	388	if (!ress)
120	{	389	{
121	rese = 0;
122
123	/* read any signals sent by the worker threads */	390	/* read any signals sent by the worker threads */
124	char buf [32];	391	char buf [32];
125	while (read (respipe [0], buf, 32) == 32)	392	while (read (respipe [0], buf, 32) == 32)
126	;	393	;
		394
		395	rese = 0;
127	}	396	}
128	}	397	}
129		398
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	{
		462	while (started < wanted && nreqs >= started)
		463	start_thread ();
		464
226	nreqs++;	465	++nreqs;
227		466
228	pthread_mutex_lock (&reqlock);	467	pthread_mutex_lock (&reqlock);
229		468
230	req->next = 0;	469	req->next = 0;
231		470
…		…
250		489
251	poll_wait ();	490	poll_wait ();
252	}	491	}
253	}	492	}
254		493
255	static void	494	static void end_thread (void)
256	end_thread (void)
257	{	495	{
258	aio_req req;	496	aio_req req;
259	Newz (0, req, 1, aio_cb);	497	Newz (0, req, 1, aio_cb);
260	req->type = REQ_QUIT;	498	req->type = REQ_QUIT;
261		499
262	send_req (req);	500	req_send (req);
263	}	501	}
264		502
265	static void min_parallel (int nthreads)	503	static void min_parallel (int nthreads)
266	{	504	{
267	while (nthreads > started)	505	if (wanted < nthreads)
268	start_thread ();	506	wanted = nthreads;
269	}	507	}
270		508
271	static void max_parallel (int nthreads)	509	static void max_parallel (int nthreads)
272	{	510	{
273	int cur = started;	511	int cur = started;
274		512
		513	if (wanted > nthreads)
		514	wanted = nthreads;
		515
275	while (cur > nthreads)	516	while (cur > wanted)
276	{	517	{
277	end_thread ();	518	end_thread ();
278	cur--;	519	cur--;
279	}	520	}
280		521
281	while (started > nthreads)	522	while (started > wanted)
282	{	523	{
283	poll_wait ();	524	poll_wait ();
284	poll_cb ();	525	poll_cb ();
285	}	526	}
286	}	527	}
…		…
293	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");	535	croak ("cannot set result pipe to nonblocking mode");
295		536
296	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297	croak ("cannot set result pipe to nonblocking mode");	538	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	}	539	}
341		540
342	/*****************************************************************************/	541	/*****************************************************************************/
343	/* work around various missing functions */	542	/* work around various missing functions */
344		543
…		…
349	/*	548	/*
350	* make our pread/pwrite safe against themselves, but not against	549	* make our pread/pwrite safe against themselves, but not against
351	* 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,
352	* but that's your problem, not mine.	551	* but that's your problem, not mine.
353	*/	552	*/
354	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
355		554
356	static ssize_t	555	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	{	556	{
359	ssize_t res;	557	ssize_t res;
360	off_t ooffset;	558	off_t ooffset;
361		559
362	pthread_mutex_lock (&iolock);	560	pthread_mutex_lock (&preadwritelock);
363	ooffset = lseek (fd, 0, SEEK_CUR);	561	ooffset = lseek (fd, 0, SEEK_CUR);
364	lseek (fd, offset, SEEK_SET);	562	lseek (fd, offset, SEEK_SET);
365	res = read (fd, buf, count);	563	res = read (fd, buf, count);
366	lseek (fd, ooffset, SEEK_SET);	564	lseek (fd, ooffset, SEEK_SET);
367	pthread_mutex_unlock (&iolock);	565	pthread_mutex_unlock (&preadwritelock);
368		566
369	return res;	567	return res;
370	}	568	}
371		569
372	static ssize_t
373	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)
374	{	571	{
375	ssize_t res;	572	ssize_t res;
376	off_t ooffset;	573	off_t ooffset;
377		574
378	pthread_mutex_lock (&iolock);	575	pthread_mutex_lock (&preadwritelock);
379	ooffset = lseek (fd, 0, SEEK_CUR);	576	ooffset = lseek (fd, 0, SEEK_CUR);
380	lseek (fd, offset, SEEK_SET);	577	lseek (fd, offset, SEEK_SET);
381	res = write (fd, buf, count);	578	res = write (fd, buf, count);
382	lseek (fd, offset, SEEK_SET);	579	lseek (fd, offset, SEEK_SET);
383	pthread_mutex_unlock (&iolock);	580	pthread_mutex_unlock (&preadwritelock);
384		581
385	return res;	582	return res;
386	}	583	}
387	#endif	584	#endif
388		585
…		…
391	#endif	588	#endif
392		589
393	#if !HAVE_READAHEAD	590	#if !HAVE_READAHEAD
394	# define readahead aio_readahead	591	# define readahead aio_readahead
395		592
		593	static ssize_t readahead (int fd, off_t offset, size_t count)
		594	{
396	static char readahead_buf[4096];	595	char readahead_buf[4096];
397		596
398	static ssize_t
399	readahead (int fd, off_t offset, size_t count)
400	{
401	while (count > 0)	597	while (count > 0)
402	{	598	{
403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
404		600
405	pread (fd, readahead_buf, len, offset);	601	pread (fd, readahead_buf, len, offset);
…		…
409		605
410	errno = 0;	606	errno = 0;
411	}	607	}
412	#endif	608	#endif
413		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
414	/*****************************************************************************/	795	/*****************************************************************************/
415		796
416	static void *
417	aio_proc (void *thr_arg)	797	static void aio_proc (void thr_arg)
418	{	798	{
419	aio_req req;	799	aio_req req;
420	int type;	800	int type;
421		801
422	do	802	do
…		…
440	}	820	}
441		821
442	pthread_mutex_unlock (&reqlock);	822	pthread_mutex_unlock (&reqlock);
443		823
444	errno = 0; /* strictly unnecessary */	824	errno = 0; /* strictly unnecessary */
		825	type = req->type; /* remember type for QUIT check */
445		826
446	type = req->type;	827	if (!(req->flags & FLAG_CANCELLED))
447
448	switch (type)	828	switch (type)
449	{	829	{
450	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;
451	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;
452		832
453	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;
454		835
455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
458		839
459	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;
460	case REQ_CLOSE: req->result = close (req->fd); break;	841	case REQ_CLOSE: req->result = close (req->fd); break;
461	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
462	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;
463	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
464		847
465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
466	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;
467		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:
468	case REQ_QUIT:	864	case REQ_QUIT:
469	break;	865	break;
470		866
471	default:	867	default:
472	req->result = ENOSYS;	868	req->result = ENOSYS;
473	break;	869	break;
474	}	870	}
475		871
476	req->errorno = errno;	872	req->errorno = errno;
477		873
478	pthread_mutex_lock (&reslock);	874	pthread_mutex_lock (&reslock);
479		875
…		…
497	while (type != REQ_QUIT);	893	while (type != REQ_QUIT);
498		894
499	return 0;	895	return 0;
500	}	896	}
501		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
502	#define dREQ \	955	#define dREQ \
503	aio_req req; \	956	aio_req req; \
		957	int req_pri = next_pri; \
		958	next_pri = DEFAULT_PRI + PRI_BIAS; \
504	\	959	\
505	if (SvOK (callback) && !SvROK (callback)) \	960	if (SvOK (callback) && !SvROK (callback)) \
506	croak ("clalback must be undef or of reference type"); \	961	croak ("callback must be undef or of reference type"); \
507	\	962	\
508	Newz (0, req, 1, aio_cb); \	963	Newz (0, req, 1, aio_cb); \
509	if (!req) \	964	if (!req) \
510	croak ("out of memory during aio_req allocation"); \	965	croak ("out of memory during aio_req allocation"); \
511	\	966	\
512	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));
513		975
514	MODULE = IO::AIO PACKAGE = IO::AIO	976	MODULE = IO::AIO PACKAGE = IO::AIO
515		977
516	PROTOTYPES: ENABLE	978	PROTOTYPES: ENABLE
517		979
518	BOOT:	980	BOOT:
519	{	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
520	create_pipe ();	987	create_pipe ();
521	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
522	}	989	}
523		990
524	void	991	void
525	min_parallel(nthreads)	992	min_parallel (nthreads)
526	int nthreads	993	int nthreads
527	PROTOTYPE: $	994	PROTOTYPE: $
528		995
529	void	996	void
530	max_parallel(nthreads)	997	max_parallel (nthreads)
531	int nthreads	998	int nthreads
532	PROTOTYPE: $	999	PROTOTYPE: $
533		1000
534	int	1001	int
535	max_outstanding(nreqs)	1002	max_outstanding (nreqs)
536	int nreqs	1003	int nreqs
537	PROTOTYPE: $	1004	PROTOTYPE: $
538	CODE:	1005	CODE:
539	RETVAL = max_outstanding;	1006	RETVAL = max_outstanding;
540	max_outstanding = nreqs;	1007	max_outstanding = nreqs;
541		1008
542	void	1009	void
543	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
544	SV * pathname	1011	SV * pathname
545	int flags	1012	int flags
546	int mode	1013	int mode
547	SV * callback	1014	SV * callback
548	PROTOTYPE: $$$;$	1015	PROTOTYPE: $$$;$
549	CODE:	1016	PPCODE:
550	{	1017	{
551	dREQ;	1018	dREQ;
552		1019
553	req->type = REQ_OPEN;	1020	req->type = REQ_OPEN;
554	req->data = newSVsv (pathname);	1021	req->data = newSVsv (pathname);
555	req->dataptr = SvPVbyte_nolen (req->data);	1022	req->dataptr = SvPVbyte_nolen (req->data);
556	req->fd = flags;	1023	req->fd = flags;
557	req->mode = mode;	1024	req->mode = mode;
558		1025
559	send_req (req);	1026	REQ_SEND;
560	}	1027	}
561		1028
562	void	1029	void
563	aio_close(fh,callback=&PL_sv_undef)	1030	aio_close (fh,callback=&PL_sv_undef)
564	SV * fh	1031	SV * fh
565	SV * callback	1032	SV * callback
566	PROTOTYPE: $;$	1033	PROTOTYPE: $;$
567	ALIAS:	1034	ALIAS:
568	aio_close = REQ_CLOSE	1035	aio_close = REQ_CLOSE
569	aio_fsync = REQ_FSYNC	1036	aio_fsync = REQ_FSYNC
570	aio_fdatasync = REQ_FDATASYNC	1037	aio_fdatasync = REQ_FDATASYNC
571	CODE:	1038	PPCODE:
572	{	1039	{
573	dREQ;	1040	dREQ;
574		1041
575	req->type = ix;	1042	req->type = ix;
576	req->fh = newSVsv (fh);	1043	req->fh = newSVsv (fh);
577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
578		1045
579	send_req (req);	1046	REQ_SEND (req);
580	}	1047	}
581		1048
582	void	1049	void
583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
584	SV * fh	1051	SV * fh
585	UV offset	1052	UV offset
586	IV length	1053	UV length
587	SV * data	1054	SV * data
588	IV dataoffset	1055	UV dataoffset
589	SV * callback	1056	SV * callback
590	ALIAS:	1057	ALIAS:
591	aio_read = REQ_READ	1058	aio_read = REQ_READ
592	aio_write = REQ_WRITE	1059	aio_write = REQ_WRITE
593	PROTOTYPE: $$$$$;$	1060	PROTOTYPE: $$$$$;$
594	CODE:	1061	PPCODE:
595	{	1062	{
596	aio_req req;	1063	aio_req req;
597	STRLEN svlen;	1064	STRLEN svlen;
598	char *svptr = SvPVbyte (data, svlen);	1065	char *svptr = SvPVbyte (data, svlen);
599		1066
…		…
637	{	1104	{
638	SvREADONLY_on (data);	1105	SvREADONLY_on (data);
639	req->data2ptr = (void *)data;	1106	req->data2ptr = (void *)data;
640	}	1107	}
641		1108
642	send_req (req);	1109	REQ_SEND;
643	}	1110	}
644	}	1111	}
645		1112
646	void	1113	void
		1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1115	SV * out_fh
		1116	SV * in_fh
		1117	UV in_offset
		1118	UV length
		1119	SV * callback
		1120	PROTOTYPE: $$$$;$
		1121	PPCODE:
		1122	{
		1123	dREQ;
		1124
		1125	req->type = REQ_SENDFILE;
		1126	req->fh = newSVsv (out_fh);
		1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1128	req->fh2 = newSVsv (in_fh);
		1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1130	req->offset = in_offset;
		1131	req->length = length;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
648	SV * fh	1138	SV * fh
649	UV offset	1139	UV offset
650	IV length	1140	IV length
651	SV * callback	1141	SV * callback
652	PROTOTYPE: $$$;$	1142	PROTOTYPE: $$$;$
653	CODE:	1143	PPCODE:
654	{	1144	{
655	dREQ;	1145	dREQ;
656		1146
657	req->type = REQ_READAHEAD;	1147	req->type = REQ_READAHEAD;
658	req->fh = newSVsv (fh);	1148	req->fh = newSVsv (fh);
659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
660	req->offset = offset;	1150	req->offset = offset;
661	req->length = length;	1151	req->length = length;
662		1152
663	send_req (req);	1153	REQ_SEND;
664	}	1154	}
665		1155
666	void	1156	void
667	aio_stat(fh_or_path,callback=&PL_sv_undef)	1157	aio_stat (fh_or_path,callback=&PL_sv_undef)
668	SV * fh_or_path	1158	SV * fh_or_path
669	SV * callback	1159	SV * callback
670	ALIAS:	1160	ALIAS:
671	aio_stat = REQ_STAT	1161	aio_stat = REQ_STAT
672	aio_lstat = REQ_LSTAT	1162	aio_lstat = REQ_LSTAT
673	CODE:	1163	PPCODE:
674	{	1164	{
675	dREQ;	1165	dREQ;
676		1166
677	New (0, req->statdata, 1, Stat_t);	1167	New (0, req->statdata, 1, Stat_t);
678	if (!req->statdata)	1168	if (!req->statdata)
679	{	1169	{
680	free_req (req);	1170	req_free (req);
681	croak ("out of memory during aio_req->statdata allocation");	1171	croak ("out of memory during aio_req->statdata allocation");
682	}	1172	}
683		1173
684	if (SvPOK (fh_or_path))	1174	if (SvPOK (fh_or_path))
685	{	1175	{
…		…
692	req->type = REQ_FSTAT;	1182	req->type = REQ_FSTAT;
693	req->fh = newSVsv (fh_or_path);	1183	req->fh = newSVsv (fh_or_path);
694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
695	}	1185	}
696		1186
697	send_req (req);	1187	REQ_SEND;
698	}	1188	}
699		1189
700	void	1190	void
701	aio_unlink(pathname,callback=&PL_sv_undef)	1191	aio_unlink (pathname,callback=&PL_sv_undef)
702	SV * pathname	1192	SV * pathname
703	SV * callback	1193	SV * callback
704	ALIAS:	1194	ALIAS:
705	aio_unlink = REQ_UNLINK	1195	aio_unlink = REQ_UNLINK
706	aio_rmdir = REQ_RMDIR	1196	aio_rmdir = REQ_RMDIR
		1197	aio_readdir = REQ_READDIR
707	CODE:	1198	PPCODE:
708	{	1199	{
709	dREQ;	1200	dREQ;
710		1201
711	req->type = ix;	1202	req->type = ix;
712	req->data = newSVsv (pathname);	1203	req->data = newSVsv (pathname);
713	req->dataptr = SvPVbyte_nolen (req->data);	1204	req->dataptr = SvPVbyte_nolen (req->data);
714		1205
715	send_req (req);	1206	REQ_SEND;
716	}	1207	}
717		1208
718	void	1209	void
719	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)
720	SV * oldpath	1211	SV * oldpath
721	SV * newpath	1212	SV * newpath
722	SV * callback	1213	SV * callback
		1214	ALIAS:
		1215	aio_link = REQ_LINK
		1216	aio_symlink = REQ_SYMLINK
		1217	aio_rename = REQ_RENAME
723	CODE:	1218	PPCODE:
724	{	1219	{
725	dREQ;	1220	dREQ;
726		1221
727	req->type = REQ_SYMLINK;	1222	req->type = ix;
728	req->fh = newSVsv (oldpath);	1223	req->fh = newSVsv (oldpath);
729	req->data2ptr = SvPVbyte_nolen (req->fh);	1224	req->data2ptr = SvPVbyte_nolen (req->fh);
730	req->data = newSVsv (newpath);	1225	req->data = newSVsv (newpath);
731	req->dataptr = SvPVbyte_nolen (req->data);	1226	req->dataptr = SvPVbyte_nolen (req->data);
732		1227
733	send_req (req);	1228	REQ_SEND;
734	}	1229	}
735		1230
736	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
737	flush()	1284	flush ()
738	PROTOTYPE:	1285	PROTOTYPE:
739	CODE:	1286	CODE:
740	while (nreqs)	1287	while (nreqs)
741	{	1288	{
742	poll_wait ();	1289	poll_wait ();
…		…
782	CODE:	1329	CODE:
783	RETVAL = nreqs;	1330	RETVAL = nreqs;
784	OUTPUT:	1331	OUTPUT:
785	RETVAL	1332	RETVAL
786		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 1.28 by root, Wed Aug 17 05:06:59 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 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC