[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 1.65 by root, Tue Oct 24 00:26:32 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
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
37	#else	53	#else
38	# define STACKSIZE 4096	54	# define STACKSIZE 16384
39	#endif	55	#endif
		56
		57	/* buffer size for various temporary buffers */
		58	#define AIO_BUFSIZE 65536
		59
		60	#define dBUF \
		61	char *aio_buf = malloc (AIO_BUFSIZE); \
		62	if (!aio_buf) \
		63	return -1;
		64
		65	#define fBUF free (aio_buf)
40		66
41	enum {	67	enum {
42	REQ_QUIT,	68	REQ_QUIT,
43	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,	71	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49	REQ_SYMLINK,	75	REQ_READDIR,
		76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
50	};	79	};
51		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
52	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
53	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
54		87
55	int type;	88	SV data, callback;
56		89	SV fh, fh2;
57	int fd, fd2;	90	void dataptr, data2ptr;
		91	Stat_t *statdata;
58	off_t offset;	92	off_t offset;
59	size_t length;	93	size_t length;
60	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
61	mode_t mode; /* open */	100	mode_t mode; /* open */
62	int errorno;
63	SV data, callback;
64	SV fh, fh2;
65	void dataptr, data2ptr;
66	STRLEN dataoffset;
67		101
68	Stat_t *statdata;	102	unsigned char flags;
		103	unsigned char pri;
		104
		105	SV self; / the perl counterpart of this request, if any */
		106	struct aio_cb grp, grp_prev, grp_next, grp_first;
69	} aio_cb;	107	} aio_cb;
70		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
71	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		115
		116	enum {
		117	PRI_MIN = -4,
		118	PRI_MAX = 4,
		119
		120	DEFAULT_PRI = 0,
		121	PRI_BIAS = -PRI_MIN,
		122	};
		123
		124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
72		125
73	static int started, wanted;	126	static int started, wanted;
74	static volatile int nreqs;	127	static volatile int nreqs;
75	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
76	static int respipe [2];	129	static int respipe [2];
77		130
		131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		133	#else
		134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		135	#endif
		136
78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		140
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
83	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
84		143
		144	static void req_invoke (aio_req req);
85	static void free_req (aio_req req)	145	static void req_free (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		146
		147	/* must be called at most once */
		148	static SV req_sv (aio_req req, const char klass)
		149	{
90	if (req->fh)	150	if (!req->self)
91	SvREFCNT_dec (req->fh);	151	{
		152	req->self = (SV *)newHV ();
		153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
92		155
93	if (req->fh2)	156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		157	}
		158
		159	static aio_req SvAIO_REQ (SV *sv)
		160	{
		161	MAGIC *mg;
		162
		163	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		164	croak ("object of class " AIO_REQ_KLASS " expected");
		165
		166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		167
		168	return mg ? (aio_req)mg->mg_ptr : 0;
		169	}
		170
		171	static void aio_grp_feed (aio_req grp)
		172	{
		173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		174	{
		175	int old_len = grp->length;
		176
		177	if (grp->fh2 && SvOK (grp->fh2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->fh2, G_VOID \| G_EVAL);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191
		192	/* stop if no progress has been made */
		193	if (old_len == grp->length)
		194	{
94	SvREFCNT_dec (req->fh2);	195	SvREFCNT_dec (grp->fh2);
95		196	grp->fh2 = 0;
96	if (req->statdata)	197	break;
97	Safefree (req->statdata);	198	}
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	{	199	}
		200	}
		201
		202	static void aio_grp_dec (aio_req grp)
		203	{
		204	--grp->length;
		205
		206	/* call feeder, if applicable */
		207	aio_grp_feed (grp);
		208
		209	/* finish, if done */
		210	if (!grp->length && grp->fd)
		211	{
		212	req_invoke (grp);
		213	req_free (grp);
		214	}
		215	}
		216
		217	static void poll_wait ()
		218	{
110	fd_set rfd;	219	fd_set rfd;
		220
		221	while (nreqs)
		222	{
		223	aio_req req;
		224	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		225	pthread_mutex_lock (&reslock);
		226	#endif
		227	req = ress;
		228	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		229	pthread_mutex_unlock (&reslock);
		230	#endif
		231
		232	if (req)
		233	return;
		234
111	FD_ZERO(&rfd);	235	FD_ZERO(&rfd);
112	FD_SET(respipe [0], &rfd);	236	FD_SET(respipe [0], &rfd);
113		237
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	238	select (respipe [0] + 1, &rfd, 0, 0, 0);
115	}	239	}
116	}	240	}
117		241
118	static int	242	static void req_invoke (aio_req req)
119	poll_cb ()	243	{
		244	dSP;
		245	int errorno = errno;
		246
		247	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		248	return;
		249
		250	errno = req->errorno;
		251
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
		258	{
		259	case REQ_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
		262
		263	if (req->result >= 0)
		264	{
		265	char *buf = req->data2ptr;
		266	AV *av = newAV ();
		267
		268	while (req->result)
		269	{
		270	SV *sv = newSVpv (buf, 0);
		271
		272	av_push (av, sv);
		273	buf += SvCUR (sv) + 1;
		274	req->result--;
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281	}
		282	break;
		283
		284	case REQ_OPEN:
		285	{
		286	/* convert fd to fh */
		287	SV *fh;
		288
		289	PUSHs (sv_2mortal (newSViv (req->result)));
		290	PUTBACK;
		291	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		292	SPAGAIN;
		293
		294	fh = SvREFCNT_inc (POPs);
		295
		296	PUSHMARK (SP);
		297	XPUSHs (sv_2mortal (fh));
		298	}
		299	break;
		300
		301	case REQ_GROUP:
		302	req->fd = 2; /* mark group as finished */
		303
		304	if (req->data)
		305	{
		306	int i;
		307	AV av = (AV )req->data;
		308
		309	EXTEND (SP, AvFILL (av) + 1);
		310	for (i = 0; i <= AvFILL (av); ++i)
		311	PUSHs (*av_fetch (av, i, 0));
		312	}
		313	break;
		314
		315	case REQ_NOP:
		316	case REQ_SLEEP:
		317	break;
		318
		319	default:
		320	PUSHs (sv_2mortal (newSViv (req->result)));
		321	break;
		322	}
		323
		324
		325	PUTBACK;
		326	call_sv (req->callback, G_VOID \| G_EVAL);
		327	SPAGAIN;
		328
		329	FREETMPS;
		330	LEAVE;
		331
		332	errno = errorno;
		333
		334	if (SvTRUE (ERRSV))
		335	{
		336	req_free (req);
		337	croak (0);
		338	}
		339	}
		340
		341	static void req_free (aio_req req)
		342	{
		343	if (req->grp)
		344	{
		345	aio_req grp = req->grp;
		346
		347	/* unlink request */
		348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		350
		351	if (grp->grp_first == req)
		352	grp->grp_first = req->grp_next;
		353
		354	aio_grp_dec (grp);
		355	}
		356
		357	if (req->self)
		358	{
		359	sv_unmagic (req->self, PERL_MAGIC_ext);
		360	SvREFCNT_dec (req->self);
		361	}
		362
		363	SvREFCNT_dec (req->data);
		364	SvREFCNT_dec (req->fh);
		365	SvREFCNT_dec (req->fh2);
		366	SvREFCNT_dec (req->callback);
		367	Safefree (req->statdata);
		368
		369	if (req->type == REQ_READDIR && req->result >= 0)
		370	free (req->data2ptr);
		371
		372	Safefree (req);
		373	}
		374
		375	static void req_cancel (aio_req req)
		376	{
		377	req->flags \|= FLAG_CANCELLED;
		378
		379	if (req->type == REQ_GROUP)
		380	{
		381	aio_req sub;
		382
		383	for (sub = req->grp_first; sub; sub = sub->grp_next)
		384	req_cancel (sub);
		385	}
		386	}
		387
		388	static int poll_cb ()
120	{	389	{
121	dSP;	390	dSP;
122	int count = 0;	391	int count = 0;
123	int do_croak = 0;	392	int do_croak = 0;
124	aio_req req;	393	aio_req req;
…		…
146	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
147		416
148	if (!req)	417	if (!req)
149	break;	418	break;
150		419
151	nreqs--;	420	--nreqs;
152		421
153	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
154	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
155	else	429	else
156	{	430	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162		433
163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	440	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
171	}	442	}
172		443
173	ENTER;	444	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		445
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++;	446	count++;
209	}	447	}
210		448
211	free_req (req);	449	req_free (req);
212	}	450	}
213		451
214	return count;	452	return count;
215	}	453	}
216		454
217	static void aio_proc(void arg);	455	static void aio_proc(void arg);
218		456
219	static void
220	start_thread (void)	457	static void start_thread (void)
221	{	458	{
222	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	460	pthread_t tid;
224	pthread_attr_t attr;	461	pthread_attr_t attr;
225		462
…		…
234	started++;	471	started++;
235		472
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	474	}
238		475
239	static void	476	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	477	{
242	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
243	start_thread ();	479	start_thread ();
244		480
245	nreqs++;	481	++nreqs;
246		482
247	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
248		484
249	req->next = 0;	485	req->next = 0;
250		486
…		…
269		505
270	poll_wait ();	506	poll_wait ();
271	}	507	}
272	}	508	}
273		509
274	static void	510	static void end_thread (void)
275	end_thread (void)
276	{	511	{
277	aio_req req;	512	aio_req req;
278	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
280		515
281	send_req (req);	516	req_send (req);
282	}	517	}
283		518
284	static void min_parallel (int nthreads)	519	static void min_parallel (int nthreads)
285	{	520	{
286	if (wanted < nthreads)	521	if (wanted < nthreads)
…		…
316	croak ("cannot set result pipe to nonblocking mode");	551	croak ("cannot set result pipe to nonblocking mode");
317		552
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	554	croak ("cannot set result pipe to nonblocking mode");
320	}	555	}
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		556
369	/*****************************************************************************/	557	/*****************************************************************************/
370	/* work around various missing functions */	558	/* work around various missing functions */
371		559
372	#if !HAVE_PREADWRITE	560	#if !HAVE_PREADWRITE
…		…
376	/*	564	/*
377	* make our pread/pwrite safe against themselves, but not against	565	* make our pread/pwrite safe against themselves, but not against
378	* normal read/write by using a mutex. slows down execution a lot,	566	* normal read/write by using a mutex. slows down execution a lot,
379	* but that's your problem, not mine.	567	* but that's your problem, not mine.
380	*/	568	*/
381	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
382		570
383	static ssize_t	571	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	{	572	{
386	ssize_t res;	573	ssize_t res;
387	off_t ooffset;	574	off_t ooffset;
388		575
389	LOCK_FD (fd);	576	pthread_mutex_lock (&preadwritelock);
390	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
391	ooffset = lseek (fd, 0, SEEK_CUR);	577	ooffset = lseek (fd, 0, SEEK_CUR);
392	lseek (fd, offset, SEEK_SET);	578	lseek (fd, offset, SEEK_SET);
393	res = read (fd, buf, count);	579	res = read (fd, buf, count);
394	lseek (fd, ooffset, SEEK_SET);	580	lseek (fd, ooffset, SEEK_SET);
395	pthread_mutex_unlock (&iolock);	581	pthread_mutex_unlock (&preadwritelock);
396	UNLOCK_FD (d);
397		582
398	return res;	583	return res;
399	}	584	}
400		585
401	static ssize_t
402	pwrite (int fd, void *buf, size_t count, off_t offset)	586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
403	{	587	{
404	ssize_t res;	588	ssize_t res;
405	off_t ooffset;	589	off_t ooffset;
406		590
407	LOCK_FD (fd);	591	pthread_mutex_lock (&preadwritelock);
408	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409	ooffset = lseek (fd, 0, SEEK_CUR);	592	ooffset = lseek (fd, 0, SEEK_CUR);
410	lseek (fd, offset, SEEK_SET);	593	lseek (fd, offset, SEEK_SET);
411	res = write (fd, buf, count);	594	res = write (fd, buf, count);
412	lseek (fd, offset, SEEK_SET);	595	lseek (fd, offset, SEEK_SET);
413	pthread_mutex_unlock (&iolock);	596	pthread_mutex_unlock (&preadwritelock);
414	UNLOCK_FD (d);
415		597
416	return res;	598	return res;
417	}	599	}
418	#endif	600	#endif
419		601
…		…
422	#endif	604	#endif
423		605
424	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
425	# define readahead aio_readahead	607	# define readahead aio_readahead
426		608
427	static char readahead_buf[4096];
428
429	static ssize_t
430	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
431	{	610	{
		611	dBUF;
		612
432	while (count > 0)	613	while (count > 0)
433	{	614	{
434	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
435		616
436	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
437	offset += len;	618	offset += len;
438	count -= len;	619	count -= len;
439	}	620	}
440		621
		622	fBUF;
		623
441	errno = 0;	624	errno = 0;
442	}	625	}
443	#endif	626	#endif
444		627
		628	#if !HAVE_READDIR_R
		629	# define readdir_r aio_readdir_r
		630
		631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		632
		633	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		634	{
		635	struct dirent *e;
		636	int errorno;
		637
		638	pthread_mutex_lock (&readdirlock);
		639
		640	e = readdir (dirp);
		641	errorno = errno;
		642
		643	if (e)
		644	{
		645	*res = ent;
		646	strcpy (ent->d_name, e->d_name);
		647	}
		648	else
		649	*res = 0;
		650
		651	pthread_mutex_unlock (&readdirlock);
		652
		653	errno = errorno;
		654	return e ? 0 : -1;
		655	}
		656	#endif
		657
445	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
446	static ssize_t
447	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448	{	660	{
449	ssize_t res;	661	ssize_t res;
450		662
451	if (!count)	663	if (!count)
452	return 0;	664	return 0;
453
454	LOCK_FD (ofd);
455		665
456	#if HAVE_SENDFILE	666	#if HAVE_SENDFILE
457	# if __linux	667	# if __linux
458	res = sendfile (ofd, ifd, &offset, count);	668	res = sendfile (ofd, ifd, &offset, count);
459		669
460	# elif __freebsd	670	# elif __freebsd
461	/*	671	/*
462	* Of course, the freebsd sendfile is a dire hack with no thoughts	672	* Of course, the freebsd sendfile is a dire hack with no thoughts
463	* wasted on making it similar to other I/O functions.	673	* wasted on making it similar to other I/O functions.
464	*/	674	*/
465	{	675	{
466	off_t sbytes;	676	off_t sbytes;
467	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468		678
469	if (res < 0 && sbytes)	679	if (res < 0 && sbytes)
470	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471	res = sbytes;	681	res = sbytes;
472	}	682	}
473		683
474	# elif __hpux	684	# elif __hpux
475	res = sendfile (ofd, ifd, offset, count, 0, 0);	685	res = sendfile (ofd, ifd, offset, count, 0, 0);
476		686
477	# elif __solaris	687	# elif __solaris
478	{	688	{
479	struct sendfilevec vec;	689	struct sendfilevec vec;
480	size_t sbytes;	690	size_t sbytes;
481		691
482	vec.sfv_fd = ifd;	692	vec.sfv_fd = ifd;
483	vec.sfv_flag = 0;	693	vec.sfv_flag = 0;
484	vec.sfv_off = offset;	694	vec.sfv_off = offset;
485	vec.sfv_len = count;	695	vec.sfv_len = count;
486		696
487	res = sendfilev (ofd, &vec, 1, &sbytes);	697	res = sendfilev (ofd, &vec, 1, &sbytes);
488		698
489	if (res < 0 && sbytes)	699	if (res < 0 && sbytes)
490	res = sbytes;	700	res = sbytes;
491	}	701	}
492		702
493	# else
494	res = -1;
495	errno = ENOSYS;
496	# endif	703	# endif
		704	#else
		705	res = -1;
		706	errno = ENOSYS;
497	#endif	707	#endif
498		708
499	if (res < 0	709	if (res < 0
500	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	710	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
501	#if __solaris	711	#if __solaris
502	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	712	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
503	#endif	713	#endif
504	)	714	)
505	)	715	)
506	{	716	{
507	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
508	char *buf = malloc (4096);	718	dBUF;
		719
509	res = 0;	720	res = 0;
510		721
511	for (;;)	722	while (count)
512	{	723	{
513	ssize_t cnt;	724	ssize_t cnt;
514		725
515	cnt = pread (ifd, buf, 4096, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
516		727
517	if (cnt <= 0)	728	if (cnt <= 0)
518	{	729	{
519	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
520	break;	731	break;
521	}	732	}
522		733
523	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
524		735
525	if (cnt <= 0)	736	if (cnt <= 0)
526	{	737	{
527	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
528	break;	739	break;
529	}	740	}
530		741
531	offset += cnt;	742	offset += cnt;
532	res += cnt;	743	res += cnt;
		744	count -= cnt;
533	}	745	}
534		746
535	{	747	fBUF;
536	int errorno = errno;
537	free (buf);
538	errno = errorno;
539	}
540	}	748	}
541		749
542	UNLOCK_FD (ofd);
543
544	return res;	750	return res;
		751	}
		752
		753	/* read a full directory */
		754	static int scandir_ (const char path, void *namesp)
		755	{
		756	DIR *dirp;
		757	union
		758	{
		759	struct dirent d;
		760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		761	} *u;
		762	struct dirent *entp;
		763	char name, names;
		764	int memlen = 4096;
		765	int memofs = 0;
		766	int res = 0;
		767	int errorno;
		768
		769	dirp = opendir (path);
		770	if (!dirp)
		771	return -1;
		772
		773	u = malloc (sizeof (*u));
		774	names = malloc (memlen);
		775
		776	if (u && names)
		777	for (;;)
		778	{
		779	errno = 0;
		780	readdir_r (dirp, &u->d, &entp);
		781
		782	if (!entp)
		783	break;
		784
		785	name = entp->d_name;
		786
		787	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		788	{
		789	int len = strlen (name) + 1;
		790
		791	res++;
		792
		793	while (memofs + len > memlen)
		794	{
		795	memlen *= 2;
		796	names = realloc (names, memlen);
		797	if (!names)
		798	break;
		799	}
		800
		801	memcpy (names + memofs, name, len);
		802	memofs += len;
		803	}
		804	}
		805
		806	errorno = errno;
		807	free (u);
		808	closedir (dirp);
		809
		810	if (errorno)
		811	{
		812	free (names);
		813	errno = errorno;
		814	res = -1;
		815	}
		816
		817	namesp = (void )names;
		818	return res;
545	}	819	}
546		820
547	/*****************************************************************************/	821	/*****************************************************************************/
548		822
549	static void *
550	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
551	{	824	{
552	aio_req req;	825	aio_req req;
553	int type;	826	int type;
554		827
555	do	828	do
…		…
573	}	846	}
574		847
575	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
576		849
577	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
578		852
579	type = req->type;	853	if (!(req->flags & FLAG_CANCELLED))
580
581	switch (type)	854	switch (type)
582	{	855	{
583	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	856	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;	857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
585		858
586	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	859	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;	860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588		861
589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592		865
593	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
594	case REQ_CLOSE: req->result = close (req->fd); break;	867	case REQ_CLOSE: req->result = close (req->fd); break;
595	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
597	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598		873
599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600	case REQ_FSYNC: req->result = fsync (req->fd); break;	875	case REQ_FSYNC: req->result = fsync (req->fd); break;
		876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
601		877
		878	case REQ_SLEEP:
		879	{
		880	struct timeval tv;
		881
		882	tv.tv_sec = req->fd;
		883	tv.tv_usec = req->fd2;
		884
		885	req->result = select (0, 0, 0, 0, &tv);
		886	}
		887
		888	case REQ_GROUP:
		889	case REQ_NOP:
602	case REQ_QUIT:	890	case REQ_QUIT:
603	break;	891	break;
604		892
605	default:	893	default:
606	req->result = ENOSYS;	894	req->result = ENOSYS;
607	break;	895	break;
608	}	896	}
609		897
610	req->errorno = errno;	898	req->errorno = errno;
611		899
612	pthread_mutex_lock (&reslock);	900	pthread_mutex_lock (&reslock);
613		901
…		…
631	while (type != REQ_QUIT);	919	while (type != REQ_QUIT);
632		920
633	return 0;	921	return 0;
634	}	922	}
635		923
		924	/*****************************************************************************/
		925
		926	static void atfork_prepare (void)
		927	{
		928	pthread_mutex_lock (&reqlock);
		929	pthread_mutex_lock (&reslock);
		930	#if !HAVE_PREADWRITE
		931	pthread_mutex_lock (&preadwritelock);
		932	#endif
		933	#if !HAVE_READDIR_R
		934	pthread_mutex_lock (&readdirlock);
		935	#endif
		936	}
		937
		938	static void atfork_parent (void)
		939	{
		940	#if !HAVE_READDIR_R
		941	pthread_mutex_unlock (&readdirlock);
		942	#endif
		943	#if !HAVE_PREADWRITE
		944	pthread_mutex_unlock (&preadwritelock);
		945	#endif
		946	pthread_mutex_unlock (&reslock);
		947	pthread_mutex_unlock (&reqlock);
		948	}
		949
		950	static void atfork_child (void)
		951	{
		952	aio_req prv;
		953
		954	started = 0;
		955
		956	while (reqs)
		957	{
		958	prv = reqs;
		959	reqs = prv->next;
		960	req_free (prv);
		961	}
		962
		963	reqs = reqe = 0;
		964
		965	while (ress)
		966	{
		967	prv = ress;
		968	ress = prv->next;
		969	req_free (prv);
		970	}
		971
		972	ress = rese = 0;
		973
		974	close (respipe [0]);
		975	close (respipe [1]);
		976	create_pipe ();
		977
		978	atfork_parent ();
		979	}
		980
636	#define dREQ \	981	#define dREQ \
637	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
638	\	985	\
639	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
640	croak ("clalback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
641	\	988	\
642	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
643	if (!req) \	990	if (!req) \
644	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
645	\	992	\
646	req->callback = newSVsv (callback);	993	req->callback = newSVsv (callback); \
		994	req->pri = req_pri
		995
		996	#define REQ_SEND \
		997	req_send (req); \
		998	\
		999	if (GIMME_V != G_VOID) \
		1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));
647		1001
648	MODULE = IO::AIO PACKAGE = IO::AIO	1002	MODULE = IO::AIO PACKAGE = IO::AIO
649		1003
650	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
651		1005
652	BOOT:	1006	BOOT:
653	{	1007	{
		1008	HV *stash = gv_stashpv ("IO::AIO", 1);
		1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1012
654	create_pipe ();	1013	create_pipe ();
655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
656	}	1015	}
657		1016
658	void	1017	void
659	min_parallel(nthreads)	1018	min_parallel (nthreads)
660	int nthreads	1019	int nthreads
661	PROTOTYPE: $	1020	PROTOTYPE: $
662		1021
663	void	1022	void
664	max_parallel(nthreads)	1023	max_parallel (nthreads)
665	int nthreads	1024	int nthreads
666	PROTOTYPE: $	1025	PROTOTYPE: $
667		1026
668	int	1027	int
669	max_outstanding(nreqs)	1028	max_outstanding (nreqs)
670	int nreqs	1029	int nreqs
671	PROTOTYPE: $	1030	PROTOTYPE: $
672	CODE:	1031	CODE:
673	RETVAL = max_outstanding;	1032	RETVAL = max_outstanding;
674	max_outstanding = nreqs;	1033	max_outstanding = nreqs;
675		1034
676	void	1035	void
677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
678	SV * pathname	1037	SV * pathname
679	int flags	1038	int flags
680	int mode	1039	int mode
681	SV * callback	1040	SV * callback
682	PROTOTYPE: $$$;$	1041	PROTOTYPE: $$$;$
683	CODE:	1042	PPCODE:
684	{	1043	{
685	dREQ;	1044	dREQ;
686		1045
687	req->type = REQ_OPEN;	1046	req->type = REQ_OPEN;
688	req->data = newSVsv (pathname);	1047	req->data = newSVsv (pathname);
689	req->dataptr = SvPVbyte_nolen (req->data);	1048	req->dataptr = SvPVbyte_nolen (req->data);
690	req->fd = flags;	1049	req->fd = flags;
691	req->mode = mode;	1050	req->mode = mode;
692		1051
693	send_req (req);	1052	REQ_SEND;
694	}	1053	}
695		1054
696	void	1055	void
697	aio_close(fh,callback=&PL_sv_undef)	1056	aio_close (fh,callback=&PL_sv_undef)
698	SV * fh	1057	SV * fh
699	SV * callback	1058	SV * callback
700	PROTOTYPE: $;$	1059	PROTOTYPE: $;$
701	ALIAS:	1060	ALIAS:
702	aio_close = REQ_CLOSE	1061	aio_close = REQ_CLOSE
703	aio_fsync = REQ_FSYNC	1062	aio_fsync = REQ_FSYNC
704	aio_fdatasync = REQ_FDATASYNC	1063	aio_fdatasync = REQ_FDATASYNC
705	CODE:	1064	PPCODE:
706	{	1065	{
707	dREQ;	1066	dREQ;
708		1067
709	req->type = ix;	1068	req->type = ix;
710	req->fh = newSVsv (fh);	1069	req->fh = newSVsv (fh);
711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
712		1071
713	send_req (req);	1072	REQ_SEND (req);
714	}	1073	}
715		1074
716	void	1075	void
717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
718	SV * fh	1077	SV * fh
719	UV offset	1078	UV offset
720	UV length	1079	UV length
721	SV * data	1080	SV * data
722	UV dataoffset	1081	UV dataoffset
723	SV * callback	1082	SV * callback
724	ALIAS:	1083	ALIAS:
725	aio_read = REQ_READ	1084	aio_read = REQ_READ
726	aio_write = REQ_WRITE	1085	aio_write = REQ_WRITE
727	PROTOTYPE: $$$$$;$	1086	PROTOTYPE: $$$$$;$
728	CODE:	1087	PPCODE:
729	{	1088	{
730	aio_req req;	1089	aio_req req;
731	STRLEN svlen;	1090	STRLEN svlen;
732	char *svptr = SvPVbyte (data, svlen);	1091	char *svptr = SvPVbyte (data, svlen);
733		1092
…		…
771	{	1130	{
772	SvREADONLY_on (data);	1131	SvREADONLY_on (data);
773	req->data2ptr = (void *)data;	1132	req->data2ptr = (void *)data;
774	}	1133	}
775		1134
776	send_req (req);	1135	REQ_SEND;
777	}	1136	}
778	}	1137	}
779		1138
780	void	1139	void
781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
782	SV * out_fh	1141	SV * out_fh
783	SV * in_fh	1142	SV * in_fh
784	UV in_offset	1143	UV in_offset
785	UV length	1144	UV length
786	SV * callback	1145	SV * callback
787	PROTOTYPE: $$$$;$	1146	PROTOTYPE: $$$$;$
788	CODE:	1147	PPCODE:
789	{	1148	{
790	dREQ;	1149	dREQ;
791		1150
792	req->type = REQ_SENDFILE;	1151	req->type = REQ_SENDFILE;
793	req->fh = newSVsv (out_fh);	1152	req->fh = newSVsv (out_fh);
…		…
795	req->fh2 = newSVsv (in_fh);	1154	req->fh2 = newSVsv (in_fh);
796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
797	req->offset = in_offset;	1156	req->offset = in_offset;
798	req->length = length;	1157	req->length = length;
799		1158
800	send_req (req);	1159	REQ_SEND;
801	}	1160	}
802		1161
803	void	1162	void
804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
805	SV * fh	1164	SV * fh
806	UV offset	1165	UV offset
807	IV length	1166	IV length
808	SV * callback	1167	SV * callback
809	PROTOTYPE: $$$;$	1168	PROTOTYPE: $$$;$
810	CODE:	1169	PPCODE:
811	{	1170	{
812	dREQ;	1171	dREQ;
813		1172
814	req->type = REQ_READAHEAD;	1173	req->type = REQ_READAHEAD;
815	req->fh = newSVsv (fh);	1174	req->fh = newSVsv (fh);
816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
817	req->offset = offset;	1176	req->offset = offset;
818	req->length = length;	1177	req->length = length;
819		1178
820	send_req (req);	1179	REQ_SEND;
821	}	1180	}
822		1181
823	void	1182	void
824	aio_stat(fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (fh_or_path,callback=&PL_sv_undef)
825	SV * fh_or_path	1184	SV * fh_or_path
826	SV * callback	1185	SV * callback
827	ALIAS:	1186	ALIAS:
828	aio_stat = REQ_STAT	1187	aio_stat = REQ_STAT
829	aio_lstat = REQ_LSTAT	1188	aio_lstat = REQ_LSTAT
830	CODE:	1189	PPCODE:
831	{	1190	{
832	dREQ;	1191	dREQ;
833		1192
834	New (0, req->statdata, 1, Stat_t);	1193	New (0, req->statdata, 1, Stat_t);
835	if (!req->statdata)	1194	if (!req->statdata)
836	{	1195	{
837	free_req (req);	1196	req_free (req);
838	croak ("out of memory during aio_req->statdata allocation");	1197	croak ("out of memory during aio_req->statdata allocation");
839	}	1198	}
840		1199
841	if (SvPOK (fh_or_path))	1200	if (SvPOK (fh_or_path))
842	{	1201	{
…		…
849	req->type = REQ_FSTAT;	1208	req->type = REQ_FSTAT;
850	req->fh = newSVsv (fh_or_path);	1209	req->fh = newSVsv (fh_or_path);
851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852	}	1211	}
853		1212
854	send_req (req);	1213	REQ_SEND;
855	}	1214	}
856		1215
857	void	1216	void
858	aio_unlink(pathname,callback=&PL_sv_undef)	1217	aio_unlink (pathname,callback=&PL_sv_undef)
859	SV * pathname	1218	SV * pathname
860	SV * callback	1219	SV * callback
861	ALIAS:	1220	ALIAS:
862	aio_unlink = REQ_UNLINK	1221	aio_unlink = REQ_UNLINK
863	aio_rmdir = REQ_RMDIR	1222	aio_rmdir = REQ_RMDIR
		1223	aio_readdir = REQ_READDIR
864	CODE:	1224	PPCODE:
865	{	1225	{
866	dREQ;	1226	dREQ;
867		1227
868	req->type = ix;	1228	req->type = ix;
869	req->data = newSVsv (pathname);	1229	req->data = newSVsv (pathname);
870	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
871		1231
872	send_req (req);	1232	REQ_SEND;
873	}	1233	}
874		1234
875	void	1235	void
876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)
877	SV * oldpath	1237	SV * oldpath
878	SV * newpath	1238	SV * newpath
879	SV * callback	1239	SV * callback
		1240	ALIAS:
		1241	aio_link = REQ_LINK
		1242	aio_symlink = REQ_SYMLINK
		1243	aio_rename = REQ_RENAME
880	CODE:	1244	PPCODE:
881	{	1245	{
882	dREQ;	1246	dREQ;
883		1247
884	req->type = REQ_SYMLINK;	1248	req->type = ix;
885	req->fh = newSVsv (oldpath);	1249	req->fh = newSVsv (oldpath);
886	req->data2ptr = SvPVbyte_nolen (req->fh);	1250	req->data2ptr = SvPVbyte_nolen (req->fh);
887	req->data = newSVsv (newpath);	1251	req->data = newSVsv (newpath);
888	req->dataptr = SvPVbyte_nolen (req->data);	1252	req->dataptr = SvPVbyte_nolen (req->data);
889		1253
890	send_req (req);	1254	REQ_SEND;
891	}	1255	}
892		1256
893	void	1257	void
		1258	aio_sleep (delay,callback=&PL_sv_undef)
		1259	double delay
		1260	SV * callback
		1261	PPCODE:
		1262	{
		1263	dREQ;
		1264
		1265	req->type = REQ_SLEEP;
		1266	req->fd = delay < 0. ? 0 : delay;
		1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_group (callback=&PL_sv_undef)
		1274	SV * callback
		1275	PROTOTYPE: ;$
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = REQ_GROUP;
		1281	req_send (req);
		1282
		1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1284	}
		1285
		1286	void
		1287	aio_nop (callback=&PL_sv_undef)
		1288	SV * callback
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = REQ_NOP;
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	#if 0
		1299
		1300	void
		1301	aio_pri (int pri = DEFAULT_PRI)
		1302	CODE:
		1303	if (pri < PRI_MIN) pri = PRI_MIN;
		1304	if (pri > PRI_MAX) pri = PRI_MAX;
		1305	next_pri = pri + PRI_BIAS;
		1306
		1307	#endif
		1308
		1309	void
894	flush()	1310	flush ()
895	PROTOTYPE:	1311	PROTOTYPE:
896	CODE:	1312	CODE:
897	while (nreqs)	1313	while (nreqs)
898	{	1314	{
899	poll_wait ();	1315	poll_wait ();
…		…
939	CODE:	1355	CODE:
940	RETVAL = nreqs;	1356	RETVAL = nreqs;
941	OUTPUT:	1357	OUTPUT:
942	RETVAL	1358	RETVAL
943		1359
		1360	PROTOTYPES: DISABLE
		1361
		1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1363
		1364	void
		1365	cancel (aio_req_ornot req)
		1366	PROTOTYPE:
		1367	CODE:
		1368	req_cancel (req);
		1369
		1370	void
		1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1372	CODE:
		1373	SvREFCNT_dec (req->callback);
		1374	req->callback = newSVsv (callback);
		1375
		1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1377
		1378	void
		1379	add (aio_req grp, ...)
		1380	PPCODE:
		1381	{
		1382	int i;
		1383	aio_req req;
		1384
		1385	if (grp->fd == 2)
		1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1387
		1388	for (i = 1; i < items; ++i )
		1389	{
		1390	if (GIMME_V != G_VOID)
		1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1392
		1393	req = SvAIO_REQ (ST (i));
		1394
		1395	if (req)
		1396	{
		1397	++grp->length;
		1398	req->grp = grp;
		1399
		1400	req->grp_prev = 0;
		1401	req->grp_next = grp->grp_first;
		1402
		1403	if (grp->grp_first)
		1404	grp->grp_first->grp_prev = req;
		1405
		1406	grp->grp_first = req;
		1407	}
		1408	}
		1409	}
		1410
		1411	void
		1412	result (aio_req grp, ...)
		1413	CODE:
		1414	{
		1415	int i;
		1416	AV *av = newAV ();
		1417
		1418	for (i = 1; i < items; ++i )
		1419	av_push (av, newSVsv (ST (i)));
		1420
		1421	SvREFCNT_dec (grp->data);
		1422	grp->data = (SV *)av;
		1423	}
		1424
		1425	void
		1426	feed_limit (aio_req grp, int limit)
		1427	CODE:
		1428	grp->fd2 = limit;
		1429	aio_grp_feed (grp);
		1430
		1431	void
		1432	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1433	CODE:
		1434	{
		1435	SvREFCNT_dec (grp->fh2);
		1436	grp->fh2 = newSVsv (callback);
		1437
		1438	if (grp->fd2 <= 0)
		1439	grp->fd2 = 2;
		1440
		1441	aio_grp_feed (grp);
		1442	}
		1443

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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 1.65 by root, Tue Oct 24 00:26:32 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 1.65 by root, Tue Oct 24 00:26:32 2006 UTC