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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs.
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC

…		…
5	#include "perl.h"	5	#include "perl.h"
6	#include "XSUB.h"	6	#include "XSUB.h"
7		7
8	#include "autoconf/config.h"	8	#include "autoconf/config.h"
9		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
		14	#include <sys/time.h>
		15	#include <sys/select.h>
10	#include <sys/types.h>	16	#include <sys/types.h>
11	#include <sys/stat.h>	17	#include <sys/stat.h>
12		18	#include <limits.h>
13	#include <unistd.h>	19	#include <unistd.h>
14	#include <fcntl.h>	20	#include <fcntl.h>
15	#include <signal.h>	21	#include <signal.h>
16	#include <sched.h>	22	#include <sched.h>
17		23
18	#include <pthread.h>	24	#if HAVE_SENDFILE
		25	# if __linux
		26	# include <sys/sendfile.h>
		27	# elif __freebsd
		28	# include <sys/socket.h>
		29	# include <sys/uio.h>
		30	# elif __hpux
		31	# include <sys/socket.h>
		32	# elif __solaris /* not yet */
		33	# include <sys/sendfile.h>
		34	# else
		35	# error sendfile support requested but not available
		36	# endif
		37	#endif
19		38
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	/* used for struct dirent, AIX doesn't provide it */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	40	#ifndef NAME_MAX
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	41	# define NAME_MAX 4096
		42	#endif
23		43
24	#if __ia64	44	#if __ia64
25	# define STACKSIZE 65536	45	# define STACKSIZE 65536
26	#else	46	#else
27	# define STACKSIZE 4096	47	# define STACKSIZE 8192
28	#endif	48	#endif
29		49
30	enum {	50	enum {
31	REQ_QUIT,	51	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		54	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37	REQ_SYMLINK,	58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_SLEEP,
		61	REQ_GROUP,
38	};	62	};
39		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
40	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
		69	struct aio_cb grp, grp_prev, *grp_next;
		70
41	struct aio_cb *volatile next;	71	struct aio_cb *volatile next;
42		72
43	int type;	73	SV self; / the perl counterpart of this request, if any */
44		74
45	int fd;	75	SV data, callback;
		76	SV fh, fh2;
		77	void dataptr, data2ptr;
		78	Stat_t *statdata;
46	off_t offset;	79	off_t offset;
47	size_t length;	80	size_t length;
48	ssize_t result;	81	ssize_t result;
		82
		83	int type;
		84	int fd, fd2;
		85	int errorno;
		86	STRLEN dataoffset;
49	mode_t mode; /* open */	87	mode_t mode; /* open */
50	int errorno;	88	unsigned char cancelled;
51	SV data, callback, *fh;
52	void dataptr, data2ptr;
53	STRLEN dataoffset;
54
55	Stat_t *statdata;
56	} aio_cb;	89	} aio_cb;
57		90
58	typedef aio_cb *aio_req;	91	typedef aio_cb *aio_req;
		92	typedef aio_cb *aio_req_ornot;
59		93
60	static int started, wanted;	94	static int started, wanted;
61	static volatile int nreqs;	95	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	96	static int max_outstanding = 1<<30;
63	static int respipe [2];	97	static int respipe [2];
…		…
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		102
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	103	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	104	static volatile aio_req ress, rese; /* queue start, queue end */
71		105
72	static void free_req (aio_req req)	106	static void req_free (aio_req req);
73	{
74	if (req->data)
75	SvREFCNT_dec (req->data);
76		107
77	if (req->fh)	108	/* must be called at most once */
78	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);
79		113
80	if (req->statdata)	114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
81	Safefree (req->statdata);
82
83	if (req->callback)
84	SvREFCNT_dec (req->callback);
85
86	Safefree (req);
87	}	115	}
88		116
89	static void	117	static aio_req SvAIO_REQ (SV *sv)
90	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 ()
91	{	128	{
92	if (nreqs && !ress)	129	if (nreqs && !ress)
93	{	130	{
94	fd_set rfd;	131	fd_set rfd;
95	FD_ZERO(&rfd);	132	FD_ZERO(&rfd);
…		…
97		134
98	select (respipe [0] + 1, &rfd, 0, 0, 0);	135	select (respipe [0] + 1, &rfd, 0, 0, 0);
99	}	136	}
100	}	137	}
101		138
102	static int	139	static void req_invoke (aio_req req)
103	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	EXTEND (SP, 1);
		152
		153	switch (req->type)
		154	{
		155	case REQ_READDIR:
		156	{
		157	SV *rv = &PL_sv_undef;
		158
		159	if (req->result >= 0)
		160	{
		161	char *buf = req->data2ptr;
		162	AV *av = newAV ();
		163
		164	while (req->result)
		165	{
		166	SV *sv = newSVpv (buf, 0);
		167
		168	av_push (av, sv);
		169	buf += SvCUR (sv) + 1;
		170	req->result--;
		171	}
		172
		173	rv = sv_2mortal (newRV_noinc ((SV *)av));
		174	}
		175
		176	PUSHs (rv);
		177	}
		178	break;
		179
		180	case REQ_OPEN:
		181	{
		182	/* convert fd to fh */
		183	SV *fh;
		184
		185	PUSHs (sv_2mortal (newSViv (req->result)));
		186	PUTBACK;
		187	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		188	SPAGAIN;
		189
		190	fh = SvREFCNT_inc (POPs);
		191
		192	PUSHMARK (SP);
		193	XPUSHs (sv_2mortal (fh));
		194	}
		195	break;
		196
		197	case REQ_GROUP:
		198	if (req->data)
		199	{
		200	int i;
		201	AV av = (AV )req->data;
		202
		203	EXTEND (SP, AvFILL (av) + 1);
		204	for (i = 0; i <= AvFILL (av); ++i)
		205	PUSHs (*av_fetch (av, i, 0));
		206	}
		207	break;
		208
		209	case REQ_SLEEP:
		210	break;
		211
		212	default:
		213	PUSHs (sv_2mortal (newSViv (req->result)));
		214	break;
		215	}
		216
		217
		218	PUTBACK;
		219	call_sv (req->callback, G_VOID \| G_EVAL);
		220	SPAGAIN;
		221
		222	if (SvTRUE (ERRSV))
		223	{
		224	req_free (req);
		225	croak (0);
		226	}
		227
		228	LEAVE;
		229
		230	errno = errorno;
		231	}
		232
		233	static void req_free (aio_req req)
		234	{
		235	if (req->grp)
		236	{
		237	aio_req grp = req->grp;
		238
		239	/* unlink request */
		240	req->grp_next->grp_prev = req->grp_prev;
		241	req->grp_prev->grp_next = req->grp_next;
		242
		243	if (grp->grp_next == grp && grp->fd)
		244	{
		245	req_invoke (grp);
		246	req_free (grp);
		247	}
		248	}
		249
		250	if (req->self)
		251	{
		252	sv_unmagic (req->self, PERL_MAGIC_ext);
		253	SvREFCNT_dec (req->self);
		254	}
		255
		256	if (req->data)
		257	SvREFCNT_dec (req->data);
		258
		259	if (req->fh)
		260	SvREFCNT_dec (req->fh);
		261
		262	if (req->fh2)
		263	SvREFCNT_dec (req->fh2);
		264
		265	if (req->statdata)
		266	Safefree (req->statdata);
		267
		268	if (req->callback)
		269	SvREFCNT_dec (req->callback);
		270
		271	if (req->type == REQ_READDIR && req->result >= 0)
		272	free (req->data2ptr);
		273
		274	Safefree (req);
		275	}
		276
		277	static void req_cancel (aio_req req)
		278	{
		279	req->cancelled = 1;
		280
		281	if (req->type == REQ_GROUP)
		282	{
		283	aio_req sub;
		284
		285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
		286	req_cancel (sub);
		287	}
		288	}
		289
		290	static int poll_cb ()
104	{	291	{
105	dSP;	292	dSP;
106	int count = 0;	293	int count = 0;
107	int do_croak = 0;	294	int do_croak = 0;
108	aio_req req;	295	aio_req req;
…		…
134		321
135	nreqs--;	322	nreqs--;
136		323
137	if (req->type == REQ_QUIT)	324	if (req->type == REQ_QUIT)
138	started--;	325	started--;
		326	else if (req->type == REQ_GROUP && req->grp_next != req)
		327	{
		328	req->fd = 1; /* mark request as delayed */
		329	continue;
		330	}
139	else	331	else
140	{	332	{
141	int errorno = errno;
142	errno = req->errorno;
143
144	if (req->type == REQ_READ)	333	if (req->type == REQ_READ)
145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146		335
147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	336	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
148	SvREADONLY_off (req->data);	337	SvREADONLY_off (req->data);
…		…
152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153	PL_laststatval = req->result;	342	PL_laststatval = req->result;
154	PL_statcache = *(req->statdata);	343	PL_statcache = *(req->statdata);
155	}	344	}
156		345
157	ENTER;	346	req_invoke (req);
158	PUSHMARK (SP);
159	XPUSHs (sv_2mortal (newSViv (req->result)));
160		347
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++;	348	count++;
193	}	349	}
194		350
195	free_req (req);	351	req_free (req);
196	}	352	}
197		353
198	return count;	354	return count;
199	}	355	}
200		356
201	static void aio_proc(void arg);	357	static void aio_proc(void arg);
202		358
203	static void
204	start_thread (void)	359	static void start_thread (void)
205	{	360	{
206	sigset_t fullsigset, oldsigset;	361	sigset_t fullsigset, oldsigset;
207	pthread_t tid;	362	pthread_t tid;
208	pthread_attr_t attr;	363	pthread_attr_t attr;
209		364
…		…
218	started++;	373	started++;
219		374
220	sigprocmask (SIG_SETMASK, &oldsigset, 0);	375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
221	}	376	}
222		377
223	static void	378	static void req_send (aio_req req)
224	send_req (aio_req req)
225	{	379	{
226	while (started < wanted && nreqs >= started)	380	while (started < wanted && nreqs >= started)
227	start_thread ();	381	start_thread ();
228		382
229	nreqs++;	383	nreqs++;
…		…
253		407
254	poll_wait ();	408	poll_wait ();
255	}	409	}
256	}	410	}
257		411
258	static void	412	static void end_thread (void)
259	end_thread (void)
260	{	413	{
261	aio_req req;	414	aio_req req;
262	Newz (0, req, 1, aio_cb);	415	Newz (0, req, 1, aio_cb);
263	req->type = REQ_QUIT;	416	req->type = REQ_QUIT;
264		417
265	send_req (req);	418	req_send (req);
266	}	419	}
267		420
268	static void min_parallel (int nthreads)	421	static void min_parallel (int nthreads)
269	{	422	{
270	if (wanted < nthreads)	423	if (wanted < nthreads)
…		…
299	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	452	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
300	croak ("cannot set result pipe to nonblocking mode");	453	croak ("cannot set result pipe to nonblocking mode");
301		454
302	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	455	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
303	croak ("cannot set result pipe to nonblocking mode");	456	croak ("cannot set result pipe to nonblocking mode");
304	}
305
306	static void atfork_prepare (void)
307	{
308	pthread_mutex_lock (&reqlock);
309	pthread_mutex_lock (&reslock);
310	}
311
312	static void atfork_parent (void)
313	{
314	pthread_mutex_unlock (&reslock);
315	pthread_mutex_unlock (&reqlock);
316	}
317
318	static void atfork_child (void)
319	{
320	aio_req prv;
321
322	started = 0;
323
324	while (reqs)
325	{
326	prv = reqs;
327	reqs = prv->next;
328	free_req (prv);
329	}
330
331	reqs = reqe = 0;
332
333	while (ress)
334	{
335	prv = ress;
336	ress = prv->next;
337	free_req (prv);
338	}
339
340	ress = rese = 0;
341
342	close (respipe [0]);
343	close (respipe [1]);
344	create_pipe ();
345
346	atfork_parent ();
347	}	457	}
348		458
349	/*****************************************************************************/	459	/*****************************************************************************/
350	/* work around various missing functions */	460	/* work around various missing functions */
351		461
…		…
356	/*	466	/*
357	* make our pread/pwrite safe against themselves, but not against	467	* make our pread/pwrite safe against themselves, but not against
358	* normal read/write by using a mutex. slows down execution a lot,	468	* normal read/write by using a mutex. slows down execution a lot,
359	* but that's your problem, not mine.	469	* but that's your problem, not mine.
360	*/	470	*/
361	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	471	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
362		472
363	static ssize_t	473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
364	pread (int fd, void *buf, size_t count, off_t offset)
365	{	474	{
366	ssize_t res;	475	ssize_t res;
367	off_t ooffset;	476	off_t ooffset;
368		477
369	pthread_mutex_lock (&iolock);	478	pthread_mutex_lock (&preadwritelock);
370	ooffset = lseek (fd, 0, SEEK_CUR);	479	ooffset = lseek (fd, 0, SEEK_CUR);
371	lseek (fd, offset, SEEK_SET);	480	lseek (fd, offset, SEEK_SET);
372	res = read (fd, buf, count);	481	res = read (fd, buf, count);
373	lseek (fd, ooffset, SEEK_SET);	482	lseek (fd, ooffset, SEEK_SET);
374	pthread_mutex_unlock (&iolock);	483	pthread_mutex_unlock (&preadwritelock);
375		484
376	return res;	485	return res;
377	}	486	}
378		487
379	static ssize_t
380	pwrite (int fd, void *buf, size_t count, off_t offset)	488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
381	{	489	{
382	ssize_t res;	490	ssize_t res;
383	off_t ooffset;	491	off_t ooffset;
384		492
385	pthread_mutex_lock (&iolock);	493	pthread_mutex_lock (&preadwritelock);
386	ooffset = lseek (fd, 0, SEEK_CUR);	494	ooffset = lseek (fd, 0, SEEK_CUR);
387	lseek (fd, offset, SEEK_SET);	495	lseek (fd, offset, SEEK_SET);
388	res = write (fd, buf, count);	496	res = write (fd, buf, count);
389	lseek (fd, offset, SEEK_SET);	497	lseek (fd, offset, SEEK_SET);
390	pthread_mutex_unlock (&iolock);	498	pthread_mutex_unlock (&preadwritelock);
391		499
392	return res;	500	return res;
393	}	501	}
394	#endif	502	#endif
395		503
…		…
398	#endif	506	#endif
399		507
400	#if !HAVE_READAHEAD	508	#if !HAVE_READAHEAD
401	# define readahead aio_readahead	509	# define readahead aio_readahead
402		510
		511	static ssize_t readahead (int fd, off_t offset, size_t count)
		512	{
403	static char readahead_buf[4096];	513	char readahead_buf[4096];
404		514
405	static ssize_t
406	readahead (int fd, off_t offset, size_t count)
407	{
408	while (count > 0)	515	while (count > 0)
409	{	516	{
410	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
411		518
412	pread (fd, readahead_buf, len, offset);	519	pread (fd, readahead_buf, len, offset);
…		…
416		523
417	errno = 0;	524	errno = 0;
418	}	525	}
419	#endif	526	#endif
420		527
		528	#if !HAVE_READDIR_R
		529	# define readdir_r aio_readdir_r
		530
		531	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		532
		533	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		534	{
		535	struct dirent *e;
		536	int errorno;
		537
		538	pthread_mutex_lock (&readdirlock);
		539
		540	e = readdir (dirp);
		541	errorno = errno;
		542
		543	if (e)
		544	{
		545	*res = ent;
		546	strcpy (ent->d_name, e->d_name);
		547	}
		548	else
		549	*res = 0;
		550
		551	pthread_mutex_unlock (&readdirlock);
		552
		553	errno = errorno;
		554	return e ? 0 : -1;
		555	}
		556	#endif
		557
		558	/* sendfile always needs emulation */
		559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		560	{
		561	ssize_t res;
		562
		563	if (!count)
		564	return 0;
		565
		566	#if HAVE_SENDFILE
		567	# if __linux
		568	res = sendfile (ofd, ifd, &offset, count);
		569
		570	# elif __freebsd
		571	/*
		572	* Of course, the freebsd sendfile is a dire hack with no thoughts
		573	* wasted on making it similar to other I/O functions.
		574	*/
		575	{
		576	off_t sbytes;
		577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		578
		579	if (res < 0 && sbytes)
		580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		581	res = sbytes;
		582	}
		583
		584	# elif __hpux
		585	res = sendfile (ofd, ifd, offset, count, 0, 0);
		586
		587	# elif __solaris
		588	{
		589	struct sendfilevec vec;
		590	size_t sbytes;
		591
		592	vec.sfv_fd = ifd;
		593	vec.sfv_flag = 0;
		594	vec.sfv_off = offset;
		595	vec.sfv_len = count;
		596
		597	res = sendfilev (ofd, &vec, 1, &sbytes);
		598
		599	if (res < 0 && sbytes)
		600	res = sbytes;
		601	}
		602
		603	# endif
		604	#else
		605	res = -1;
		606	errno = ENOSYS;
		607	#endif
		608
		609	if (res < 0
		610	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		611	#if __solaris
		612	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		613	#endif
		614	)
		615	)
		616	{
		617	/* emulate sendfile. this is a major pain in the ass */
		618	char buf[4096];
		619	res = 0;
		620
		621	while (count)
		622	{
		623	ssize_t cnt;
		624
		625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		626
		627	if (cnt <= 0)
		628	{
		629	if (cnt && !res) res = -1;
		630	break;
		631	}
		632
		633	cnt = write (ofd, buf, cnt);
		634
		635	if (cnt <= 0)
		636	{
		637	if (cnt && !res) res = -1;
		638	break;
		639	}
		640
		641	offset += cnt;
		642	res += cnt;
		643	count -= cnt;
		644	}
		645	}
		646
		647	return res;
		648	}
		649
		650	/* read a full directory */
		651	static int scandir_ (const char path, void *namesp)
		652	{
		653	DIR *dirp = opendir (path);
		654	union
		655	{
		656	struct dirent d;
		657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		658	} u;
		659	struct dirent *entp;
		660	char name, names;
		661	int memlen = 4096;
		662	int memofs = 0;
		663	int res = 0;
		664	int errorno;
		665
		666	if (!dirp)
		667	return -1;
		668
		669	names = malloc (memlen);
		670
		671	for (;;)
		672	{
		673	errno = 0, readdir_r (dirp, &u.d, &entp);
		674
		675	if (!entp)
		676	break;
		677
		678	name = entp->d_name;
		679
		680	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		681	{
		682	int len = strlen (name) + 1;
		683
		684	res++;
		685
		686	while (memofs + len > memlen)
		687	{
		688	memlen *= 2;
		689	names = realloc (names, memlen);
		690	if (!names)
		691	break;
		692	}
		693
		694	memcpy (names + memofs, name, len);
		695	memofs += len;
		696	}
		697	}
		698
		699	errorno = errno;
		700	closedir (dirp);
		701
		702	if (errorno)
		703	{
		704	free (names);
		705	errno = errorno;
		706	res = -1;
		707	}
		708
		709	namesp = (void )names;
		710	return res;
		711	}
		712
421	/*****************************************************************************/	713	/*****************************************************************************/
422		714
423	static void *
424	aio_proc (void *thr_arg)	715	static void aio_proc (void thr_arg)
425	{	716	{
426	aio_req req;	717	aio_req req;
427	int type;	718	int type;
428		719
429	do	720	do
…		…
448		739
449	pthread_mutex_unlock (&reqlock);	740	pthread_mutex_unlock (&reqlock);
450		741
451	errno = 0; /* strictly unnecessary */	742	errno = 0; /* strictly unnecessary */
452		743
453	type = req->type;	744	if (!req->cancelled)
454
455	switch (type)	745	switch (req->type)
456	{	746	{
457	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
458	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
459		749
460	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
461		752
462	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
463	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
464	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
465		756
466	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
467	case REQ_CLOSE: req->result = close (req->fd); break;	758	case REQ_CLOSE: req->result = close (req->fd); break;
468	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
469	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
470	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
471		764
472	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
473	case REQ_FSYNC: req->result = fsync (req->fd); break;	766	case REQ_FSYNC: req->result = fsync (req->fd); break;
		767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
474		768
		769	case REQ_SLEEP:
		770	{
		771	struct timeval tv;
		772
		773	tv.tv_sec = req->fd;
		774	tv.tv_usec = req->fd2;
		775
		776	req->result = select (0, 0, 0, 0, &tv);
		777	}
		778
475	case REQ_QUIT:	779	case REQ_QUIT:
476	break;	780	break;
477		781
478	default:	782	default:
479	req->result = ENOSYS;	783	req->result = ENOSYS;
480	break;	784	break;
481	}	785	}
482		786
483	req->errorno = errno;	787	req->errorno = errno;
484		788
485	pthread_mutex_lock (&reslock);	789	pthread_mutex_lock (&reslock);
486		790
…		…
504	while (type != REQ_QUIT);	808	while (type != REQ_QUIT);
505		809
506	return 0;	810	return 0;
507	}	811	}
508		812
		813	/*****************************************************************************/
		814
		815	static void atfork_prepare (void)
		816	{
		817	pthread_mutex_lock (&reqlock);
		818	pthread_mutex_lock (&reslock);
		819	#if !HAVE_PREADWRITE
		820	pthread_mutex_lock (&preadwritelock);
		821	#endif
		822	#if !HAVE_READDIR_R
		823	pthread_mutex_lock (&readdirlock);
		824	#endif
		825	}
		826
		827	static void atfork_parent (void)
		828	{
		829	#if !HAVE_READDIR_R
		830	pthread_mutex_unlock (&readdirlock);
		831	#endif
		832	#if !HAVE_PREADWRITE
		833	pthread_mutex_unlock (&preadwritelock);
		834	#endif
		835	pthread_mutex_unlock (&reslock);
		836	pthread_mutex_unlock (&reqlock);
		837	}
		838
		839	static void atfork_child (void)
		840	{
		841	aio_req prv;
		842
		843	started = 0;
		844
		845	while (reqs)
		846	{
		847	prv = reqs;
		848	reqs = prv->next;
		849	req_free (prv);
		850	}
		851
		852	reqs = reqe = 0;
		853
		854	while (ress)
		855	{
		856	prv = ress;
		857	ress = prv->next;
		858	req_free (prv);
		859	}
		860
		861	ress = rese = 0;
		862
		863	close (respipe [0]);
		864	close (respipe [1]);
		865	create_pipe ();
		866
		867	atfork_parent ();
		868	}
		869
509	#define dREQ \	870	#define dREQ \
510	aio_req req; \	871	aio_req req; \
511	\	872	\
512	if (SvOK (callback) && !SvROK (callback)) \	873	if (SvOK (callback) && !SvROK (callback)) \
513	croak ("clalback must be undef or of reference type"); \	874	croak ("callback must be undef or of reference type"); \
514	\	875	\
515	Newz (0, req, 1, aio_cb); \	876	Newz (0, req, 1, aio_cb); \
516	if (!req) \	877	if (!req) \
517	croak ("out of memory during aio_req allocation"); \	878	croak ("out of memory during aio_req allocation"); \
518	\	879	\
519	req->callback = newSVsv (callback);	880	req->callback = newSVsv (callback)
		881
		882	#define REQ_SEND \
		883	req_send (req); \
		884	\
		885	if (GIMME_V != G_VOID) \
		886	XPUSHs (req_sv (req, AIO_REQ_KLASS));
520		887
521	MODULE = IO::AIO PACKAGE = IO::AIO	888	MODULE = IO::AIO PACKAGE = IO::AIO
522		889
523	PROTOTYPES: ENABLE	890	PROTOTYPES: ENABLE
524		891
525	BOOT:	892	BOOT:
526	{	893	{
		894	HV *stash = gv_stashpv ("IO::AIO", 1);
		895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		898
527	create_pipe ();	899	create_pipe ();
528	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
529	}	901	}
530		902
531	void	903	void
532	min_parallel(nthreads)	904	min_parallel (nthreads)
533	int nthreads	905	int nthreads
534	PROTOTYPE: $	906	PROTOTYPE: $
535		907
536	void	908	void
537	max_parallel(nthreads)	909	max_parallel (nthreads)
538	int nthreads	910	int nthreads
539	PROTOTYPE: $	911	PROTOTYPE: $
540		912
541	int	913	int
542	max_outstanding(nreqs)	914	max_outstanding (nreqs)
543	int nreqs	915	int nreqs
544	PROTOTYPE: $	916	PROTOTYPE: $
545	CODE:	917	CODE:
546	RETVAL = max_outstanding;	918	RETVAL = max_outstanding;
547	max_outstanding = nreqs;	919	max_outstanding = nreqs;
548		920
549	void	921	void
550	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
551	SV * pathname	923	SV * pathname
552	int flags	924	int flags
553	int mode	925	int mode
554	SV * callback	926	SV * callback
555	PROTOTYPE: $$$;$	927	PROTOTYPE: $$$;$
556	CODE:	928	PPCODE:
557	{	929	{
558	dREQ;	930	dREQ;
559		931
560	req->type = REQ_OPEN;	932	req->type = REQ_OPEN;
561	req->data = newSVsv (pathname);	933	req->data = newSVsv (pathname);
562	req->dataptr = SvPVbyte_nolen (req->data);	934	req->dataptr = SvPVbyte_nolen (req->data);
563	req->fd = flags;	935	req->fd = flags;
564	req->mode = mode;	936	req->mode = mode;
565		937
566	send_req (req);	938	REQ_SEND;
567	}	939	}
568		940
569	void	941	void
570	aio_close(fh,callback=&PL_sv_undef)	942	aio_close (fh,callback=&PL_sv_undef)
571	SV * fh	943	SV * fh
572	SV * callback	944	SV * callback
573	PROTOTYPE: $;$	945	PROTOTYPE: $;$
574	ALIAS:	946	ALIAS:
575	aio_close = REQ_CLOSE	947	aio_close = REQ_CLOSE
576	aio_fsync = REQ_FSYNC	948	aio_fsync = REQ_FSYNC
577	aio_fdatasync = REQ_FDATASYNC	949	aio_fdatasync = REQ_FDATASYNC
578	CODE:	950	PPCODE:
579	{	951	{
580	dREQ;	952	dREQ;
581		953
582	req->type = ix;	954	req->type = ix;
583	req->fh = newSVsv (fh);	955	req->fh = newSVsv (fh);
584	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
585		957
586	send_req (req);	958	REQ_SEND (req);
587	}	959	}
588		960
589	void	961	void
590	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
591	SV * fh	963	SV * fh
592	UV offset	964	UV offset
593	IV length	965	UV length
594	SV * data	966	SV * data
595	IV dataoffset	967	UV dataoffset
596	SV * callback	968	SV * callback
597	ALIAS:	969	ALIAS:
598	aio_read = REQ_READ	970	aio_read = REQ_READ
599	aio_write = REQ_WRITE	971	aio_write = REQ_WRITE
600	PROTOTYPE: $$$$$;$	972	PROTOTYPE: $$$$$;$
601	CODE:	973	PPCODE:
602	{	974	{
603	aio_req req;	975	aio_req req;
604	STRLEN svlen;	976	STRLEN svlen;
605	char *svptr = SvPVbyte (data, svlen);	977	char *svptr = SvPVbyte (data, svlen);
606		978
…		…
644	{	1016	{
645	SvREADONLY_on (data);	1017	SvREADONLY_on (data);
646	req->data2ptr = (void *)data;	1018	req->data2ptr = (void *)data;
647	}	1019	}
648		1020
649	send_req (req);	1021	REQ_SEND;
650	}	1022	}
651	}	1023	}
652		1024
653	void	1025	void
		1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1027	SV * out_fh
		1028	SV * in_fh
		1029	UV in_offset
		1030	UV length
		1031	SV * callback
		1032	PROTOTYPE: $$$$;$
		1033	PPCODE:
		1034	{
		1035	dREQ;
		1036
		1037	req->type = REQ_SENDFILE;
		1038	req->fh = newSVsv (out_fh);
		1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1040	req->fh2 = newSVsv (in_fh);
		1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1042	req->offset = in_offset;
		1043	req->length = length;
		1044
		1045	REQ_SEND;
		1046	}
		1047
		1048	void
654	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1049	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
655	SV * fh	1050	SV * fh
656	UV offset	1051	UV offset
657	IV length	1052	IV length
658	SV * callback	1053	SV * callback
659	PROTOTYPE: $$$;$	1054	PROTOTYPE: $$$;$
660	CODE:	1055	PPCODE:
661	{	1056	{
662	dREQ;	1057	dREQ;
663		1058
664	req->type = REQ_READAHEAD;	1059	req->type = REQ_READAHEAD;
665	req->fh = newSVsv (fh);	1060	req->fh = newSVsv (fh);
666	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
667	req->offset = offset;	1062	req->offset = offset;
668	req->length = length;	1063	req->length = length;
669		1064
670	send_req (req);	1065	REQ_SEND;
671	}	1066	}
672		1067
673	void	1068	void
674	aio_stat(fh_or_path,callback=&PL_sv_undef)	1069	aio_stat (fh_or_path,callback=&PL_sv_undef)
675	SV * fh_or_path	1070	SV * fh_or_path
676	SV * callback	1071	SV * callback
677	ALIAS:	1072	ALIAS:
678	aio_stat = REQ_STAT	1073	aio_stat = REQ_STAT
679	aio_lstat = REQ_LSTAT	1074	aio_lstat = REQ_LSTAT
680	CODE:	1075	PPCODE:
681	{	1076	{
682	dREQ;	1077	dREQ;
683		1078
684	New (0, req->statdata, 1, Stat_t);	1079	New (0, req->statdata, 1, Stat_t);
685	if (!req->statdata)	1080	if (!req->statdata)
686	{	1081	{
687	free_req (req);	1082	req_free (req);
688	croak ("out of memory during aio_req->statdata allocation");	1083	croak ("out of memory during aio_req->statdata allocation");
689	}	1084	}
690		1085
691	if (SvPOK (fh_or_path))	1086	if (SvPOK (fh_or_path))
692	{	1087	{
…		…
699	req->type = REQ_FSTAT;	1094	req->type = REQ_FSTAT;
700	req->fh = newSVsv (fh_or_path);	1095	req->fh = newSVsv (fh_or_path);
701	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
702	}	1097	}
703		1098
704	send_req (req);	1099	REQ_SEND;
705	}	1100	}
706		1101
707	void	1102	void
708	aio_unlink(pathname,callback=&PL_sv_undef)	1103	aio_unlink (pathname,callback=&PL_sv_undef)
709	SV * pathname	1104	SV * pathname
710	SV * callback	1105	SV * callback
711	ALIAS:	1106	ALIAS:
712	aio_unlink = REQ_UNLINK	1107	aio_unlink = REQ_UNLINK
713	aio_rmdir = REQ_RMDIR	1108	aio_rmdir = REQ_RMDIR
		1109	aio_readdir = REQ_READDIR
714	CODE:	1110	PPCODE:
715	{	1111	{
716	dREQ;	1112	dREQ;
717		1113
718	req->type = ix;	1114	req->type = ix;
719	req->data = newSVsv (pathname);	1115	req->data = newSVsv (pathname);
720	req->dataptr = SvPVbyte_nolen (req->data);	1116	req->dataptr = SvPVbyte_nolen (req->data);
721		1117
722	send_req (req);	1118	REQ_SEND;
723	}	1119	}
724		1120
725	void	1121	void
726	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)
727	SV * oldpath	1123	SV * oldpath
728	SV * newpath	1124	SV * newpath
729	SV * callback	1125	SV * callback
		1126	ALIAS:
		1127	aio_link = REQ_LINK
		1128	aio_symlink = REQ_SYMLINK
		1129	aio_rename = REQ_RENAME
730	CODE:	1130	PPCODE:
731	{	1131	{
732	dREQ;	1132	dREQ;
733		1133
734	req->type = REQ_SYMLINK;	1134	req->type = ix;
735	req->fh = newSVsv (oldpath);	1135	req->fh = newSVsv (oldpath);
736	req->data2ptr = SvPVbyte_nolen (req->fh);	1136	req->data2ptr = SvPVbyte_nolen (req->fh);
737	req->data = newSVsv (newpath);	1137	req->data = newSVsv (newpath);
738	req->dataptr = SvPVbyte_nolen (req->data);	1138	req->dataptr = SvPVbyte_nolen (req->data);
739		1139
740	send_req (req);	1140	REQ_SEND;
741	}	1141	}
742		1142
743	void	1143	void
		1144	aio_sleep (delay,callback=&PL_sv_undef)
		1145	double delay
		1146	SV * callback
		1147	PPCODE:
		1148	{
		1149	dREQ;
		1150
		1151	req->type = REQ_SLEEP;
		1152	req->fd = delay < 0. ? 0 : delay;
		1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_group (callback=&PL_sv_undef)
		1160	SV * callback
		1161	PROTOTYPE: ;$
		1162	PPCODE:
		1163	{
		1164	dREQ;
		1165	req->type = REQ_GROUP;
		1166	req->grp_next = req;
		1167	req->grp_prev = req;
		1168
		1169	req_send (req);
		1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1171	}
		1172
		1173	void
744	flush()	1174	flush ()
745	PROTOTYPE:	1175	PROTOTYPE:
746	CODE:	1176	CODE:
747	while (nreqs)	1177	while (nreqs)
748	{	1178	{
749	poll_wait ();	1179	poll_wait ();
…		…
789	CODE:	1219	CODE:
790	RETVAL = nreqs;	1220	RETVAL = nreqs;
791	OUTPUT:	1221	OUTPUT:
792	RETVAL	1222	RETVAL
793		1223
		1224	PROTOTYPES: DISABLE
		1225
		1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1227
		1228	void
		1229	cancel (aio_req_ornot req)
		1230	PROTOTYPE:
		1231	CODE:
		1232	req_cancel (req);
		1233
		1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1235
		1236	void
		1237	add (aio_req grp, ...)
		1238	PPCODE:
		1239	{
		1240	int i;
		1241
		1242	for (i = 1; i < items; ++i )
		1243	{
		1244	if (GIMME_V != G_VOID)
		1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1246
		1247	aio_req req = SvAIO_REQ (ST (i));
		1248
		1249	if (req)
		1250	{
		1251	req->grp_prev = grp;
		1252	req->grp_next = grp->grp_next;
		1253	grp->grp_next->grp_prev = req;
		1254	grp->grp_next = req;
		1255
		1256	req->grp = grp;
		1257	}
		1258	}
		1259	}
		1260
		1261	void
		1262	result (aio_req grp, ...)
		1263	CODE:
		1264	{
		1265	int i;
		1266	AV *av = newAV ();
		1267
		1268	if (grp->data)
		1269	SvREFCNT_dec (grp->data);
		1270
		1271	for (i = 1; i < items; ++i )
		1272	av_push (av, newSVsv (ST (i)));
		1273
		1274	grp->data = (SV *)av;
		1275	}
		1276

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs. Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.31 by root, Thu Aug 18 16:34:53 2005 UTC vs.
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC