[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 1.46 by root, Sun Oct 22 00:49:29 2006 UTC

…		…
7		7
8	#include "autoconf/config.h"	8	#include "autoconf/config.h"
9		9
10	#include <pthread.h>	10	#include <pthread.h>
11		11
		12	#include <stddef.h>
		13	#include <errno.h>
		14	#include <sys/time.h>
		15	#include <sys/select.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
13	#include <sys/stat.h>	17	#include <sys/stat.h>
14		18	#include <limits.h>
15	#include <unistd.h>	19	#include <unistd.h>
16	#include <fcntl.h>	20	#include <fcntl.h>
17	#include <signal.h>	21	#include <signal.h>
18	#include <sched.h>	22	#include <sched.h>
19		23
…		…
30	# else	34	# else
31	# error sendfile support requested but not available	35	# error sendfile support requested but not available
32	# endif	36	# endif
33	#endif	37	#endif
34		38
		39	/* used for struct dirent, AIX doesn't provide it */
		40	#ifndef NAME_MAX
		41	# define NAME_MAX 4096
		42	#endif
		43
35	#if __ia64	44	#if __ia64
36	# define STACKSIZE 65536	45	# define STACKSIZE 65536
37	#else	46	#else
38	# define STACKSIZE 4096	47	# define STACKSIZE 8192
39	#endif	48	#endif
40		49
41	enum {	50	enum {
42	REQ_QUIT,	51	REQ_QUIT,
43	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,	54	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49	REQ_SYMLINK,	58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_SLEEP,
		61	REQ_GROUP,
50	};	62	};
51		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
52	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
		69	struct aio_cb grp, grp_prev, *grp_next;
		70
53	struct aio_cb *volatile next;	71	struct aio_cb *volatile next;
54		72
55	int type;	73	SV self; / the perl counterpart of this request, if any */
56		74
57	int fd, fd2;	75	SV data, callback;
		76	SV fh, fh2;
		77	void dataptr, data2ptr;
		78	Stat_t *statdata;
58	off_t offset;	79	off_t offset;
59	size_t length;	80	size_t length;
60	ssize_t result;	81	ssize_t result;
		82
		83	int type;
		84	int fd, fd2;
		85	int errorno;
		86	STRLEN dataoffset;
61	mode_t mode; /* open */	87	mode_t mode; /* open */
62	int errorno;	88	unsigned char cancelled;
63	SV data, callback;
64	SV fh, fh2;
65	void dataptr, data2ptr;
66	STRLEN dataoffset;
67
68	Stat_t *statdata;
69	} aio_cb;	89	} aio_cb;
70		90
71	typedef aio_cb *aio_req;	91	typedef aio_cb *aio_req;
		92	typedef aio_cb *aio_req_ornot;
72		93
73	static int started, wanted;	94	static int started, wanted;
74	static volatile int nreqs;	95	static volatile int nreqs;
75	static int max_outstanding = 1<<30;	96	static int max_outstanding = 1<<30;
76	static int respipe [2];	97	static int respipe [2];
…		…
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		102
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	103	static volatile aio_req reqs, reqe; /* queue start, queue end */
83	static volatile aio_req ress, rese; /* queue start, queue end */	104	static volatile aio_req ress, rese; /* queue start, queue end */
84		105
85	static void free_req (aio_req req)	106	static void req_free (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		107
90	if (req->fh)	108	/* must be called at most once */
91	SvREFCNT_dec (req->fh);	109	static SV req_sv (aio_req req, const char klass)
		110	{
		111	req->self = (SV *)newHV ();
		112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
92		113
93	if (req->fh2)	114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
94	SvREFCNT_dec (req->fh2);
95
96	if (req->statdata)
97	Safefree (req->statdata);
98
99	if (req->callback)
100	SvREFCNT_dec (req->callback);
101
102	Safefree (req);
103	}	115	}
104		116
105	static void	117	static aio_req SvAIO_REQ (SV *sv)
106	poll_wait ()	118	{
		119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		120	croak ("object of class " AIO_REQ_KLASS " expected");
		121
		122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		123
		124	return mg ? (aio_req)mg->mg_ptr : 0;
		125	}
		126
		127	static void poll_wait ()
107	{	128	{
108	if (nreqs && !ress)	129	if (nreqs && !ress)
109	{	130	{
110	fd_set rfd;	131	fd_set rfd;
111	FD_ZERO(&rfd);	132	FD_ZERO(&rfd);
…		…
113		134
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	135	select (respipe [0] + 1, &rfd, 0, 0, 0);
115	}	136	}
116	}	137	}
117		138
118	static int	139	static void req_invoke (aio_req req)
119	poll_cb ()	140	{
		141	dSP;
		142	int errorno = errno;
		143
		144	if (req->cancelled \|\| !SvOK (req->callback))
		145	return;
		146
		147	errno = req->errorno;
		148
		149	ENTER;
		150	PUSHMARK (SP);
		151
		152	switch (req->type)
		153	{
		154	case REQ_READDIR:
		155	{
		156	SV *rv = &PL_sv_undef;
		157
		158	if (req->result >= 0)
		159	{
		160	char *buf = req->data2ptr;
		161	AV *av = newAV ();
		162
		163	while (req->result)
		164	{
		165	SV *sv = newSVpv (buf, 0);
		166
		167	av_push (av, sv);
		168	buf += SvCUR (sv) + 1;
		169	req->result--;
		170	}
		171
		172	rv = sv_2mortal (newRV_noinc ((SV *)av));
		173	}
		174
		175	XPUSHs (rv);
		176	}
		177	break;
		178
		179	case REQ_OPEN:
		180	{
		181	/* convert fd to fh */
		182	SV *fh;
		183
		184	XPUSHs (sv_2mortal (newSViv (req->result)));
		185	PUTBACK;
		186	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		187	SPAGAIN;
		188
		189	fh = SvREFCNT_inc (POPs);
		190
		191	PUSHMARK (SP);
		192	XPUSHs (sv_2mortal (fh));
		193	}
		194	break;
		195
		196	case REQ_SLEEP:
		197	case REQ_GROUP:
		198	break;
		199
		200	default:
		201	XPUSHs (sv_2mortal (newSViv (req->result)));
		202	break;
		203	}
		204
		205
		206	PUTBACK;
		207	call_sv (req->callback, G_VOID \| G_EVAL);
		208	SPAGAIN;
		209
		210	if (SvTRUE (ERRSV))
		211	{
		212	req_free (req);
		213	croak (0);
		214	}
		215
		216	LEAVE;
		217
		218	errno = errorno;
		219	}
		220
		221	static void req_free (aio_req req)
		222	{
		223	if (req->grp)
		224	{
		225	aio_req grp = req->grp;
		226
		227	/* unlink request */
		228	req->grp_next->grp_prev = req->grp_prev;
		229	req->grp_prev->grp_next = req->grp_next;
		230
		231	if (grp->grp_next == grp && grp->fd)
		232	{
		233	req_invoke (grp);
		234	req_free (grp);
		235	}
		236	}
		237
		238	if (req->self)
		239	{
		240	sv_unmagic (req->self, PERL_MAGIC_ext);
		241	SvREFCNT_dec (req->self);
		242	}
		243
		244	if (req->data)
		245	SvREFCNT_dec (req->data);
		246
		247	if (req->fh)
		248	SvREFCNT_dec (req->fh);
		249
		250	if (req->fh2)
		251	SvREFCNT_dec (req->fh2);
		252
		253	if (req->statdata)
		254	Safefree (req->statdata);
		255
		256	if (req->callback)
		257	SvREFCNT_dec (req->callback);
		258
		259	if (req->type == REQ_READDIR && req->result >= 0)
		260	free (req->data2ptr);
		261
		262	Safefree (req);
		263	}
		264
		265	static void req_cancel (aio_req req)
		266	{
		267	req->cancelled = 1;
		268
		269	if (req->type == REQ_GROUP)
		270	{
		271	aio_req sub;
		272
		273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
		274	req_cancel (sub);
		275	}
		276	}
		277
		278	static int poll_cb ()
120	{	279	{
121	dSP;	280	dSP;
122	int count = 0;	281	int count = 0;
123	int do_croak = 0;	282	int do_croak = 0;
124	aio_req req;	283	aio_req req;
…		…
150		309
151	nreqs--;	310	nreqs--;
152		311
153	if (req->type == REQ_QUIT)	312	if (req->type == REQ_QUIT)
154	started--;	313	started--;
		314	else if (req->type == REQ_GROUP && req->grp_next != req)
		315	{
		316	req->fd = 1; /* mark request as delayed */
		317	continue;
		318	}
155	else	319	else
156	{	320	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	321	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162		323
163	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	324	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	325	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	330	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	331	PL_statcache = *(req->statdata);
171	}	332	}
172		333
173	ENTER;	334	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		335
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++;	336	count++;
209	}	337	}
210		338
211	free_req (req);	339	req_free (req);
212	}	340	}
213		341
214	return count;	342	return count;
215	}	343	}
216		344
217	static void aio_proc(void arg);	345	static void aio_proc(void arg);
218		346
219	static void
220	start_thread (void)	347	static void start_thread (void)
221	{	348	{
222	sigset_t fullsigset, oldsigset;	349	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	350	pthread_t tid;
224	pthread_attr_t attr;	351	pthread_attr_t attr;
225		352
…		…
234	started++;	361	started++;
235		362
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	364	}
238		365
239	static void	366	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	367	{
242	while (started < wanted && nreqs >= started)	368	while (started < wanted && nreqs >= started)
243	start_thread ();	369	start_thread ();
244		370
245	nreqs++;	371	nreqs++;
…		…
269		395
270	poll_wait ();	396	poll_wait ();
271	}	397	}
272	}	398	}
273		399
274	static void	400	static void end_thread (void)
275	end_thread (void)
276	{	401	{
277	aio_req req;	402	aio_req req;
278	Newz (0, req, 1, aio_cb);	403	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;	404	req->type = REQ_QUIT;
280		405
281	send_req (req);	406	req_send (req);
282	}	407	}
283		408
284	static void min_parallel (int nthreads)	409	static void min_parallel (int nthreads)
285	{	410	{
286	if (wanted < nthreads)	411	if (wanted < nthreads)
…		…
316	croak ("cannot set result pipe to nonblocking mode");	441	croak ("cannot set result pipe to nonblocking mode");
317		442
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	444	croak ("cannot set result pipe to nonblocking mode");
320	}	445	}
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		446
369	/*****************************************************************************/	447	/*****************************************************************************/
370	/* work around various missing functions */	448	/* work around various missing functions */
371		449
372	#if !HAVE_PREADWRITE	450	#if !HAVE_PREADWRITE
…		…
376	/*	454	/*
377	* make our pread/pwrite safe against themselves, but not against	455	* make our pread/pwrite safe against themselves, but not against
378	* normal read/write by using a mutex. slows down execution a lot,	456	* normal read/write by using a mutex. slows down execution a lot,
379	* but that's your problem, not mine.	457	* but that's your problem, not mine.
380	*/	458	*/
381	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
382		460
383	static ssize_t	461	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	{	462	{
386	ssize_t res;	463	ssize_t res;
387	off_t ooffset;	464	off_t ooffset;
388		465
389	LOCK_FD (fd);	466	pthread_mutex_lock (&preadwritelock);
390	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
391	ooffset = lseek (fd, 0, SEEK_CUR);	467	ooffset = lseek (fd, 0, SEEK_CUR);
392	lseek (fd, offset, SEEK_SET);	468	lseek (fd, offset, SEEK_SET);
393	res = read (fd, buf, count);	469	res = read (fd, buf, count);
394	lseek (fd, ooffset, SEEK_SET);	470	lseek (fd, ooffset, SEEK_SET);
395	pthread_mutex_unlock (&iolock);	471	pthread_mutex_unlock (&preadwritelock);
396	UNLOCK_FD (d);
397		472
398	return res;	473	return res;
399	}	474	}
400		475
401	static ssize_t
402	pwrite (int fd, void *buf, size_t count, off_t offset)	476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
403	{	477	{
404	ssize_t res;	478	ssize_t res;
405	off_t ooffset;	479	off_t ooffset;
406		480
407	LOCK_FD (fd);	481	pthread_mutex_lock (&preadwritelock);
408	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409	ooffset = lseek (fd, 0, SEEK_CUR);	482	ooffset = lseek (fd, 0, SEEK_CUR);
410	lseek (fd, offset, SEEK_SET);	483	lseek (fd, offset, SEEK_SET);
411	res = write (fd, buf, count);	484	res = write (fd, buf, count);
412	lseek (fd, offset, SEEK_SET);	485	lseek (fd, offset, SEEK_SET);
413	pthread_mutex_unlock (&iolock);	486	pthread_mutex_unlock (&preadwritelock);
414	UNLOCK_FD (d);
415		487
416	return res;	488	return res;
417	}	489	}
418	#endif	490	#endif
419		491
…		…
422	#endif	494	#endif
423		495
424	#if !HAVE_READAHEAD	496	#if !HAVE_READAHEAD
425	# define readahead aio_readahead	497	# define readahead aio_readahead
426		498
		499	static ssize_t readahead (int fd, off_t offset, size_t count)
		500	{
427	static char readahead_buf[4096];	501	char readahead_buf[4096];
428		502
429	static ssize_t
430	readahead (int fd, off_t offset, size_t count)
431	{
432	while (count > 0)	503	while (count > 0)
433	{	504	{
434	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
435		506
436	pread (fd, readahead_buf, len, offset);	507	pread (fd, readahead_buf, len, offset);
…		…
440		511
441	errno = 0;	512	errno = 0;
442	}	513	}
443	#endif	514	#endif
444		515
		516	#if !HAVE_READDIR_R
		517	# define readdir_r aio_readdir_r
		518
		519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		520
		521	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		522	{
		523	struct dirent *e;
		524	int errorno;
		525
		526	pthread_mutex_lock (&readdirlock);
		527
		528	e = readdir (dirp);
		529	errorno = errno;
		530
		531	if (e)
		532	{
		533	*res = ent;
		534	strcpy (ent->d_name, e->d_name);
		535	}
		536	else
		537	*res = 0;
		538
		539	pthread_mutex_unlock (&readdirlock);
		540
		541	errno = errorno;
		542	return e ? 0 : -1;
		543	}
		544	#endif
		545
445	/* sendfile always needs emulation */	546	/* sendfile always needs emulation */
446	static ssize_t
447	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448	{	548	{
449	ssize_t res;	549	ssize_t res;
450		550
451	if (!count)	551	if (!count)
452	return 0;	552	return 0;
453
454	LOCK_FD (ofd);
455		553
456	#if HAVE_SENDFILE	554	#if HAVE_SENDFILE
457	# if __linux	555	# if __linux
458	res = sendfile (ofd, ifd, &offset, count);	556	res = sendfile (ofd, ifd, &offset, count);
459		557
460	# elif __freebsd	558	# elif __freebsd
461	/*	559	/*
462	* Of course, the freebsd sendfile is a dire hack with no thoughts	560	* Of course, the freebsd sendfile is a dire hack with no thoughts
463	* wasted on making it similar to other I/O functions.	561	* wasted on making it similar to other I/O functions.
464	*/	562	*/
465	{	563	{
466	off_t sbytes;	564	off_t sbytes;
467	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468		566
469	if (res < 0 && sbytes)	567	if (res < 0 && sbytes)
470	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471	res = sbytes;	569	res = sbytes;
472	}	570	}
473		571
474	# elif __hpux	572	# elif __hpux
475	res = sendfile (ofd, ifd, offset, count, 0, 0);	573	res = sendfile (ofd, ifd, offset, count, 0, 0);
476		574
477	# elif __solaris	575	# elif __solaris
478	{	576	{
479	struct sendfilevec vec;	577	struct sendfilevec vec;
480	size_t sbytes;	578	size_t sbytes;
481		579
482	vec.sfv_fd = ifd;	580	vec.sfv_fd = ifd;
483	vec.sfv_flag = 0;	581	vec.sfv_flag = 0;
484	vec.sfv_off = offset;	582	vec.sfv_off = offset;
485	vec.sfv_len = count;	583	vec.sfv_len = count;
486		584
487	res = sendfilev (ofd, &vec, 1, &sbytes);	585	res = sendfilev (ofd, &vec, 1, &sbytes);
488		586
489	if (res < 0 && sbytes)	587	if (res < 0 && sbytes)
490	res = sbytes;	588	res = sbytes;
491	}	589	}
492		590
493	# else
494	res = -1;
495	errno = ENOSYS;
496	# endif	591	# endif
		592	#else
		593	res = -1;
		594	errno = ENOSYS;
497	#endif	595	#endif
498		596
499	if (res < 0	597	if (res < 0
500	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	598	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
501	#if __solaris	599	#if __solaris
502	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	600	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
503	#endif	601	#endif
504	)	602	)
505	)	603	)
506	{	604	{
507	/* emulate sendfile. this is a major pain in the ass */	605	/* emulate sendfile. this is a major pain in the ass */
508	char *buf = malloc (4096);	606	char buf[4096];
509	res = 0;	607	res = 0;
510		608
511	for (;;)	609	while (count)
512	{	610	{
513	ssize_t cnt;	611	ssize_t cnt;
514		612
515	cnt = pread (ifd, buf, 4096, offset);	613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
516		614
517	if (cnt <= 0)	615	if (cnt <= 0)
518	{	616	{
519	if (cnt && !res) res = -1;	617	if (cnt && !res) res = -1;
520	break;	618	break;
521	}	619	}
522		620
523	cnt = write (ofd, buf, cnt);	621	cnt = write (ofd, buf, cnt);
524		622
525	if (cnt <= 0)	623	if (cnt <= 0)
526	{	624	{
527	if (cnt && !res) res = -1;	625	if (cnt && !res) res = -1;
528	break;	626	break;
529	}	627	}
530		628
531	offset += cnt;	629	offset += cnt;
532	res += cnt;	630	res += cnt;
		631	count -= cnt;
533	}	632	}
534
535	{
536	int errorno = errno;
537	free (buf);
538	errno = errorno;
539	}
540	}	633	}
541		634
542	UNLOCK_FD (ofd);
543
544	return res;	635	return res;
		636	}
		637
		638	/* read a full directory */
		639	static int scandir_ (const char path, void *namesp)
		640	{
		641	DIR *dirp = opendir (path);
		642	union
		643	{
		644	struct dirent d;
		645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		646	} u;
		647	struct dirent *entp;
		648	char name, names;
		649	int memlen = 4096;
		650	int memofs = 0;
		651	int res = 0;
		652	int errorno;
		653
		654	if (!dirp)
		655	return -1;
		656
		657	names = malloc (memlen);
		658
		659	for (;;)
		660	{
		661	errno = 0, readdir_r (dirp, &u.d, &entp);
		662
		663	if (!entp)
		664	break;
		665
		666	name = entp->d_name;
		667
		668	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		669	{
		670	int len = strlen (name) + 1;
		671
		672	res++;
		673
		674	while (memofs + len > memlen)
		675	{
		676	memlen *= 2;
		677	names = realloc (names, memlen);
		678	if (!names)
		679	break;
		680	}
		681
		682	memcpy (names + memofs, name, len);
		683	memofs += len;
		684	}
		685	}
		686
		687	errorno = errno;
		688	closedir (dirp);
		689
		690	if (errorno)
		691	{
		692	free (names);
		693	errno = errorno;
		694	res = -1;
		695	}
		696
		697	namesp = (void )names;
		698	return res;
545	}	699	}
546		700
547	/*****************************************************************************/	701	/*****************************************************************************/
548		702
549	static void *
550	aio_proc (void *thr_arg)	703	static void aio_proc (void thr_arg)
551	{	704	{
552	aio_req req;	705	aio_req req;
553	int type;	706	int type;
554		707
555	do	708	do
…		…
574		727
575	pthread_mutex_unlock (&reqlock);	728	pthread_mutex_unlock (&reqlock);
576		729
577	errno = 0; /* strictly unnecessary */	730	errno = 0; /* strictly unnecessary */
578		731
579	type = req->type;	732	if (!req->cancelled)
580
581	switch (type)	733	switch (req->type)
582	{	734	{
583	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	735	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;	736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
585		737
586	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	738	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;	739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588		740
589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592		744
593	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
594	case REQ_CLOSE: req->result = close (req->fd); break;	746	case REQ_CLOSE: req->result = close (req->fd); break;
595	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
597	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598		752
599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600	case REQ_FSYNC: req->result = fsync (req->fd); break;	754	case REQ_FSYNC: req->result = fsync (req->fd); break;
		755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
601		756
		757	case REQ_SLEEP:
		758	{
		759	struct timeval tv;
		760
		761	tv.tv_sec = req->fd;
		762	tv.tv_usec = req->fd2;
		763
		764	req->result = select (0, 0, 0, 0, &tv);
		765	}
		766
602	case REQ_QUIT:	767	case REQ_QUIT:
603	break;	768	break;
604		769
605	default:	770	default:
606	req->result = ENOSYS;	771	req->result = ENOSYS;
607	break;	772	break;
608	}	773	}
609		774
610	req->errorno = errno;	775	req->errorno = errno;
611		776
612	pthread_mutex_lock (&reslock);	777	pthread_mutex_lock (&reslock);
613		778
…		…
631	while (type != REQ_QUIT);	796	while (type != REQ_QUIT);
632		797
633	return 0;	798	return 0;
634	}	799	}
635		800
		801	/*****************************************************************************/
		802
		803	static void atfork_prepare (void)
		804	{
		805	pthread_mutex_lock (&reqlock);
		806	pthread_mutex_lock (&reslock);
		807	#if !HAVE_PREADWRITE
		808	pthread_mutex_lock (&preadwritelock);
		809	#endif
		810	#if !HAVE_READDIR_R
		811	pthread_mutex_lock (&readdirlock);
		812	#endif
		813	}
		814
		815	static void atfork_parent (void)
		816	{
		817	#if !HAVE_READDIR_R
		818	pthread_mutex_unlock (&readdirlock);
		819	#endif
		820	#if !HAVE_PREADWRITE
		821	pthread_mutex_unlock (&preadwritelock);
		822	#endif
		823	pthread_mutex_unlock (&reslock);
		824	pthread_mutex_unlock (&reqlock);
		825	}
		826
		827	static void atfork_child (void)
		828	{
		829	aio_req prv;
		830
		831	started = 0;
		832
		833	while (reqs)
		834	{
		835	prv = reqs;
		836	reqs = prv->next;
		837	req_free (prv);
		838	}
		839
		840	reqs = reqe = 0;
		841
		842	while (ress)
		843	{
		844	prv = ress;
		845	ress = prv->next;
		846	req_free (prv);
		847	}
		848
		849	ress = rese = 0;
		850
		851	close (respipe [0]);
		852	close (respipe [1]);
		853	create_pipe ();
		854
		855	atfork_parent ();
		856	}
		857
636	#define dREQ \	858	#define dREQ \
637	aio_req req; \	859	aio_req req; \
638	\	860	\
639	if (SvOK (callback) && !SvROK (callback)) \	861	if (SvOK (callback) && !SvROK (callback)) \
640	croak ("clalback must be undef or of reference type"); \	862	croak ("callback must be undef or of reference type"); \
641	\	863	\
642	Newz (0, req, 1, aio_cb); \	864	Newz (0, req, 1, aio_cb); \
643	if (!req) \	865	if (!req) \
644	croak ("out of memory during aio_req allocation"); \	866	croak ("out of memory during aio_req allocation"); \
645	\	867	\
646	req->callback = newSVsv (callback);	868	req->callback = newSVsv (callback)
		869
		870	#define REQ_SEND \
		871	req_send (req); \
		872	\
		873	if (GIMME_V != G_VOID) \
		874	XPUSHs (req_sv (req, AIO_REQ_KLASS));
647		875
648	MODULE = IO::AIO PACKAGE = IO::AIO	876	MODULE = IO::AIO PACKAGE = IO::AIO
649		877
650	PROTOTYPES: ENABLE	878	PROTOTYPES: ENABLE
651		879
652	BOOT:	880	BOOT:
653	{	881	{
		882	HV *stash = gv_stashpv ("IO::AIO", 1);
		883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		886
654	create_pipe ();	887	create_pipe ();
655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
656	}	889	}
657		890
658	void	891	void
659	min_parallel(nthreads)	892	min_parallel (nthreads)
660	int nthreads	893	int nthreads
661	PROTOTYPE: $	894	PROTOTYPE: $
662		895
663	void	896	void
664	max_parallel(nthreads)	897	max_parallel (nthreads)
665	int nthreads	898	int nthreads
666	PROTOTYPE: $	899	PROTOTYPE: $
667		900
668	int	901	int
669	max_outstanding(nreqs)	902	max_outstanding (nreqs)
670	int nreqs	903	int nreqs
671	PROTOTYPE: $	904	PROTOTYPE: $
672	CODE:	905	CODE:
673	RETVAL = max_outstanding;	906	RETVAL = max_outstanding;
674	max_outstanding = nreqs;	907	max_outstanding = nreqs;
675		908
676	void	909	void
677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
678	SV * pathname	911	SV * pathname
679	int flags	912	int flags
680	int mode	913	int mode
681	SV * callback	914	SV * callback
682	PROTOTYPE: $$$;$	915	PROTOTYPE: $$$;$
683	CODE:	916	PPCODE:
684	{	917	{
685	dREQ;	918	dREQ;
686		919
687	req->type = REQ_OPEN;	920	req->type = REQ_OPEN;
688	req->data = newSVsv (pathname);	921	req->data = newSVsv (pathname);
689	req->dataptr = SvPVbyte_nolen (req->data);	922	req->dataptr = SvPVbyte_nolen (req->data);
690	req->fd = flags;	923	req->fd = flags;
691	req->mode = mode;	924	req->mode = mode;
692		925
693	send_req (req);	926	REQ_SEND;
694	}	927	}
695		928
696	void	929	void
697	aio_close(fh,callback=&PL_sv_undef)	930	aio_close (fh,callback=&PL_sv_undef)
698	SV * fh	931	SV * fh
699	SV * callback	932	SV * callback
700	PROTOTYPE: $;$	933	PROTOTYPE: $;$
701	ALIAS:	934	ALIAS:
702	aio_close = REQ_CLOSE	935	aio_close = REQ_CLOSE
703	aio_fsync = REQ_FSYNC	936	aio_fsync = REQ_FSYNC
704	aio_fdatasync = REQ_FDATASYNC	937	aio_fdatasync = REQ_FDATASYNC
705	CODE:	938	PPCODE:
706	{	939	{
707	dREQ;	940	dREQ;
708		941
709	req->type = ix;	942	req->type = ix;
710	req->fh = newSVsv (fh);	943	req->fh = newSVsv (fh);
711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
712		945
713	send_req (req);	946	REQ_SEND (req);
714	}	947	}
715		948
716	void	949	void
717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
718	SV * fh	951	SV * fh
719	UV offset	952	UV offset
720	UV length	953	UV length
721	SV * data	954	SV * data
722	UV dataoffset	955	UV dataoffset
723	SV * callback	956	SV * callback
724	ALIAS:	957	ALIAS:
725	aio_read = REQ_READ	958	aio_read = REQ_READ
726	aio_write = REQ_WRITE	959	aio_write = REQ_WRITE
727	PROTOTYPE: $$$$$;$	960	PROTOTYPE: $$$$$;$
728	CODE:	961	PPCODE:
729	{	962	{
730	aio_req req;	963	aio_req req;
731	STRLEN svlen;	964	STRLEN svlen;
732	char *svptr = SvPVbyte (data, svlen);	965	char *svptr = SvPVbyte (data, svlen);
733		966
…		…
771	{	1004	{
772	SvREADONLY_on (data);	1005	SvREADONLY_on (data);
773	req->data2ptr = (void *)data;	1006	req->data2ptr = (void *)data;
774	}	1007	}
775		1008
776	send_req (req);	1009	REQ_SEND;
777	}	1010	}
778	}	1011	}
779		1012
780	void	1013	void
781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
782	SV * out_fh	1015	SV * out_fh
783	SV * in_fh	1016	SV * in_fh
784	UV in_offset	1017	UV in_offset
785	UV length	1018	UV length
786	SV * callback	1019	SV * callback
787	PROTOTYPE: $$$$;$	1020	PROTOTYPE: $$$$;$
788	CODE:	1021	PPCODE:
789	{	1022	{
790	dREQ;	1023	dREQ;
791		1024
792	req->type = REQ_SENDFILE;	1025	req->type = REQ_SENDFILE;
793	req->fh = newSVsv (out_fh);	1026	req->fh = newSVsv (out_fh);
…		…
795	req->fh2 = newSVsv (in_fh);	1028	req->fh2 = newSVsv (in_fh);
796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
797	req->offset = in_offset;	1030	req->offset = in_offset;
798	req->length = length;	1031	req->length = length;
799		1032
800	send_req (req);	1033	REQ_SEND;
801	}	1034	}
802		1035
803	void	1036	void
804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
805	SV * fh	1038	SV * fh
806	UV offset	1039	UV offset
807	IV length	1040	IV length
808	SV * callback	1041	SV * callback
809	PROTOTYPE: $$$;$	1042	PROTOTYPE: $$$;$
810	CODE:	1043	PPCODE:
811	{	1044	{
812	dREQ;	1045	dREQ;
813		1046
814	req->type = REQ_READAHEAD;	1047	req->type = REQ_READAHEAD;
815	req->fh = newSVsv (fh);	1048	req->fh = newSVsv (fh);
816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
817	req->offset = offset;	1050	req->offset = offset;
818	req->length = length;	1051	req->length = length;
819		1052
820	send_req (req);	1053	REQ_SEND;
821	}	1054	}
822		1055
823	void	1056	void
824	aio_stat(fh_or_path,callback=&PL_sv_undef)	1057	aio_stat (fh_or_path,callback=&PL_sv_undef)
825	SV * fh_or_path	1058	SV * fh_or_path
826	SV * callback	1059	SV * callback
827	ALIAS:	1060	ALIAS:
828	aio_stat = REQ_STAT	1061	aio_stat = REQ_STAT
829	aio_lstat = REQ_LSTAT	1062	aio_lstat = REQ_LSTAT
830	CODE:	1063	PPCODE:
831	{	1064	{
832	dREQ;	1065	dREQ;
833		1066
834	New (0, req->statdata, 1, Stat_t);	1067	New (0, req->statdata, 1, Stat_t);
835	if (!req->statdata)	1068	if (!req->statdata)
836	{	1069	{
837	free_req (req);	1070	req_free (req);
838	croak ("out of memory during aio_req->statdata allocation");	1071	croak ("out of memory during aio_req->statdata allocation");
839	}	1072	}
840		1073
841	if (SvPOK (fh_or_path))	1074	if (SvPOK (fh_or_path))
842	{	1075	{
…		…
849	req->type = REQ_FSTAT;	1082	req->type = REQ_FSTAT;
850	req->fh = newSVsv (fh_or_path);	1083	req->fh = newSVsv (fh_or_path);
851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852	}	1085	}
853		1086
854	send_req (req);	1087	REQ_SEND;
855	}	1088	}
856		1089
857	void	1090	void
858	aio_unlink(pathname,callback=&PL_sv_undef)	1091	aio_unlink (pathname,callback=&PL_sv_undef)
859	SV * pathname	1092	SV * pathname
860	SV * callback	1093	SV * callback
861	ALIAS:	1094	ALIAS:
862	aio_unlink = REQ_UNLINK	1095	aio_unlink = REQ_UNLINK
863	aio_rmdir = REQ_RMDIR	1096	aio_rmdir = REQ_RMDIR
		1097	aio_readdir = REQ_READDIR
864	CODE:	1098	PPCODE:
865	{	1099	{
866	dREQ;	1100	dREQ;
867		1101
868	req->type = ix;	1102	req->type = ix;
869	req->data = newSVsv (pathname);	1103	req->data = newSVsv (pathname);
870	req->dataptr = SvPVbyte_nolen (req->data);	1104	req->dataptr = SvPVbyte_nolen (req->data);
871		1105
872	send_req (req);	1106	REQ_SEND;
873	}	1107	}
874		1108
875	void	1109	void
876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)
877	SV * oldpath	1111	SV * oldpath
878	SV * newpath	1112	SV * newpath
879	SV * callback	1113	SV * callback
		1114	ALIAS:
		1115	aio_link = REQ_LINK
		1116	aio_symlink = REQ_SYMLINK
		1117	aio_rename = REQ_RENAME
880	CODE:	1118	PPCODE:
881	{	1119	{
882	dREQ;	1120	dREQ;
883		1121
884	req->type = REQ_SYMLINK;	1122	req->type = ix;
885	req->fh = newSVsv (oldpath);	1123	req->fh = newSVsv (oldpath);
886	req->data2ptr = SvPVbyte_nolen (req->fh);	1124	req->data2ptr = SvPVbyte_nolen (req->fh);
887	req->data = newSVsv (newpath);	1125	req->data = newSVsv (newpath);
888	req->dataptr = SvPVbyte_nolen (req->data);	1126	req->dataptr = SvPVbyte_nolen (req->data);
889		1127
890	send_req (req);	1128	REQ_SEND;
891	}	1129	}
892		1130
893	void	1131	void
		1132	aio_sleep (delay,callback=&PL_sv_undef)
		1133	double delay
		1134	SV * callback
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->type = REQ_SLEEP;
		1140	req->fd = delay < 0. ? 0 : delay;
		1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1142
		1143	REQ_SEND;
		1144	}
		1145
		1146	void
		1147	aio_group (callback=&PL_sv_undef)
		1148	SV * callback
		1149	PROTOTYPE: ;$
		1150	PPCODE:
		1151	{
		1152	dREQ;
		1153	req->type = REQ_GROUP;
		1154	req->grp_next = req;
		1155	req->grp_prev = req;
		1156
		1157	req_send (req);
		1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1159	}
		1160
		1161	void
894	flush()	1162	flush ()
895	PROTOTYPE:	1163	PROTOTYPE:
896	CODE:	1164	CODE:
897	while (nreqs)	1165	while (nreqs)
898	{	1166	{
899	poll_wait ();	1167	poll_wait ();
…		…
939	CODE:	1207	CODE:
940	RETVAL = nreqs;	1208	RETVAL = nreqs;
941	OUTPUT:	1209	OUTPUT:
942	RETVAL	1210	RETVAL
943		1211
		1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1213
		1214	void
		1215	cancel (aio_req_ornot req)
		1216	PROTOTYPE:
		1217	CODE:
		1218	req_cancel (req);
		1219
		1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1221
		1222	void
		1223	add (aio_req grp, ...)
		1224	PROTOTYPE: $;@
		1225	PPCODE:
		1226	{
		1227	int i;
		1228
		1229	for (i = 1; i < items; ++i )
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1233
		1234	aio_req req = SvAIO_REQ (ST (i));
		1235	printf ("req = %p\n", req);//D
		1236
		1237	if (req)
		1238	{
		1239	req->grp_prev = grp;
		1240	req->grp_next = grp->grp_next;
		1241	grp->grp_next->grp_prev = req;
		1242	grp->grp_next = req;
		1243
		1244	req->grp = grp;
		1245	}
		1246	}
		1247	}
		1248

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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 1.46 by root, Sun Oct 22 00:49:29 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 1.46 by root, Sun Oct 22 00:49:29 2006 UTC