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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC vs.
Revision 1.43 by root, Sat Oct 21 23:06:04 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>
10	#include <sys/types.h>	14	#include <sys/types.h>
11	#include <sys/stat.h>	15	#include <sys/stat.h>
12		16	#include <limits.h>
13	#include <unistd.h>	17	#include <unistd.h>
14	#include <fcntl.h>	18	#include <fcntl.h>
15	#include <signal.h>	19	#include <signal.h>
16	#include <sched.h>	20	#include <sched.h>
17		21
18	#include <pthread.h>	22	#if HAVE_SENDFILE
		23	# if __linux
		24	# include <sys/sendfile.h>
		25	# elif __freebsd
		26	# include <sys/socket.h>
		27	# include <sys/uio.h>
		28	# elif __hpux
		29	# include <sys/socket.h>
		30	# elif __solaris /* not yet */
		31	# include <sys/sendfile.h>
		32	# else
		33	# error sendfile support requested but not available
		34	# endif
		35	#endif
19		36
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	37	/* used for struct dirent, AIX doesn't provide it */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	#ifndef NAME_MAX
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	39	# define NAME_MAX 4096
		40	#endif
23		41
24	#if __ia64	42	#if __ia64
25	# define STACKSIZE 65536	43	# define STACKSIZE 65536
26	#else	44	#else
27	# define STACKSIZE 4096	45	# define STACKSIZE 8192
28	#endif	46	#endif
29		47
30	enum {	48	enum {
31	REQ_QUIT,	49	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	50	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		52	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	54	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,	55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37	REQ_SYMLINK,	56	REQ_READDIR,
		57	REQ_LINK, REQ_SYMLINK,
38	};	58	};
39		59
		60	#define AIO_CB_KLASS "IO::AIO::CB"
		61
40	typedef struct aio_cb {	62	typedef struct aio_cb
		63	{
		64	struct aio_cb grp_prev, grp_next;
		65	struct aio_grp *grp;
		66
41	struct aio_cb *volatile next;	67	struct aio_cb *volatile next;
42		68
43	int type;	69	SV self; / the perl counterpart of this request, if any */
44		70
45	int fd;	71	SV data, callback;
		72	SV fh, fh2;
		73	void dataptr, data2ptr;
		74	Stat_t *statdata;
46	off_t offset;	75	off_t offset;
47	size_t length;	76	size_t length;
48	ssize_t result;	77	ssize_t result;
		78
		79	int type;
		80	int fd, fd2;
		81	int errorno;
		82	STRLEN dataoffset;
49	mode_t mode; /* open */	83	mode_t mode; /* open */
50	int errorno;	84	unsigned char cancelled;
51	SV data, callback, *fh;
52	void dataptr, data2ptr;
53	STRLEN dataoffset;
54
55	Stat_t *statdata;
56	} aio_cb;	85	} aio_cb;
57		86
58	typedef aio_cb *aio_req;	87	typedef aio_cb *aio_req;
		88	typedef aio_cb *aio_req_ornot;
59		89
60	static int started;	90	static int started, wanted;
61	static volatile int nreqs;	91	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	92	static int max_outstanding = 1<<30;
63	static int respipe [2];	93	static int respipe [2];
64		94
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	95	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
…		…
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	97	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		98
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	99	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	100	static volatile aio_req ress, rese; /* queue start, queue end */
71		101
		102	typedef struct aio_grp
		103	{
		104	struct aio_cb first, last;
		105	SV *callback;
		106	int busycount;
		107	} aio_grp;
		108
		109	static void aio_grp_begin (aio_grp *grp)
		110	{
		111	++grp->busycount;
		112	}
		113
		114	static void aio_grp_end (aio_grp *grp)
		115	{
		116	--grp->busycount;
		117
		118	if (grp->busycount)
		119	return;
		120
		121	SvREFCNT_dec (grp->callback);
		122	grp->callback = 0;
		123	}
		124
		125	static aio_grp *aio_grp_new ()
		126	{
		127	aio_grp *grp;
		128
		129	Newz (0, grp, 1, aio_grp);
		130	aio_grp_begin (grp);
		131
		132	return grp;
		133	}
		134
		135	/* must be called at most once */
		136	static SV *req_sv (aio_req req)
		137	{
		138	req->self = (SV *)newHV ();
		139	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		140
		141	return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));
		142	}
		143
		144	static aio_req SvAIO_REQ (SV *sv)
		145	{
		146	if (!sv_derived_from (sv, AIO_CB_KLASS) \|\| !SvROK (sv))
		147	croak ("object of class " AIO_CB_KLASS " expected");
		148
		149	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		150
		151	return mg ? (aio_req)mg->mg_ptr : 0;
		152	}
		153
72	static void free_req (aio_req req)	154	static void req_free (aio_req req)
73	{	155	{
		156	if (req->self)
		157	{
		158	sv_unmagic (req->self, PERL_MAGIC_ext);
		159	SvREFCNT_dec (req->self);
		160	}
		161
74	if (req->data)	162	if (req->data)
75	SvREFCNT_dec (req->data);	163	SvREFCNT_dec (req->data);
76		164
77	if (req->fh)	165	if (req->fh)
78	SvREFCNT_dec (req->fh);	166	SvREFCNT_dec (req->fh);
79		167
		168	if (req->fh2)
		169	SvREFCNT_dec (req->fh2);
		170
80	if (req->statdata)	171	if (req->statdata)
81	Safefree (req->statdata);	172	Safefree (req->statdata);
82		173
83	if (req->callback)	174	if (req->callback)
84	SvREFCNT_dec (req->callback);	175	SvREFCNT_dec (req->callback);
		176
		177	if (req->type == REQ_READDIR && req->result >= 0)
		178	free (req->data2ptr);
85		179
86	Safefree (req);	180	Safefree (req);
87	}	181	}
88		182
89	static void	183	static void
…		…
116	{	210	{
117	ress = req->next;	211	ress = req->next;
118		212
119	if (!ress)	213	if (!ress)
120	{	214	{
121	rese = 0;
122
123	/* read any signals sent by the worker threads */	215	/* read any signals sent by the worker threads */
124	char buf [32];	216	char buf [32];
125	while (read (respipe [0], buf, 32) == 32)	217	while (read (respipe [0], buf, 32) == 32)
126	;	218	;
		219
		220	rese = 0;
127	}	221	}
128	}	222	}
129		223
130	pthread_mutex_unlock (&reslock);	224	pthread_mutex_unlock (&reslock);
131		225
…		…
142	errno = req->errorno;	236	errno = req->errorno;
143		237
144	if (req->type == REQ_READ)	238	if (req->type == REQ_READ)
145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146		240
		241	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		242	SvREADONLY_off (req->data);
		243
147	if (req->statdata)	244	if (req->statdata)
148	{	245	{
149	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
150	PL_laststatval = req->result;	247	PL_laststatval = req->result;
151	PL_statcache = *(req->statdata);	248	PL_statcache = *(req->statdata);
152	}	249	}
153		250
154	ENTER;	251	ENTER;
155	PUSHMARK (SP);	252	PUSHMARK (SP);
156	XPUSHs (sv_2mortal (newSViv (req->result)));
157		253
158	if (req->type == REQ_OPEN)	254	if (req->type == REQ_READDIR)
159	{	255	{
160	/* convert fd to fh */	256	SV *rv = &PL_sv_undef;
161	SV *fh;
162		257
163	PUTBACK;	258	if (req->result >= 0)
164	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	259	{
165	SPAGAIN;	260	char *buf = req->data2ptr;
		261	AV *av = newAV ();
166		262
167	fh = SvREFCNT_inc (POPs);	263	while (req->result)
		264	{
		265	SV *sv = newSVpv (buf, 0);
168		266
		267	av_push (av, sv);
		268	buf += SvCUR (sv) + 1;
		269	req->result--;
		270	}
		271
		272	rv = sv_2mortal (newRV_noinc ((SV *)av));
		273	}
		274
169	PUSHMARK (SP);	275	XPUSHs (rv);
170	XPUSHs (sv_2mortal (fh));
171	}	276	}
		277	else
		278	{
		279	XPUSHs (sv_2mortal (newSViv (req->result)));
172		280
		281	if (req->type == REQ_OPEN)
		282	{
		283	/* convert fd to fh */
		284	SV *fh;
		285
		286	PUTBACK;
		287	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		288	SPAGAIN;
		289
		290	fh = SvREFCNT_inc (POPs);
		291
		292	PUSHMARK (SP);
		293	XPUSHs (sv_2mortal (fh));
		294	}
		295	}
		296
173	if (SvOK (req->callback))	297	if (SvOK (req->callback) && !req->cancelled)
174	{	298	{
175	PUTBACK;	299	PUTBACK;
176	call_sv (req->callback, G_VOID \| G_EVAL);	300	call_sv (req->callback, G_VOID \| G_EVAL);
177	SPAGAIN;	301	SPAGAIN;
178		302
179	if (SvTRUE (ERRSV))	303	if (SvTRUE (ERRSV))
180	{	304	{
181	free_req (req);	305	req_free (req);
182	croak (0);	306	croak (0);
183	}	307	}
184	}	308	}
185		309
186	LEAVE;	310	LEAVE;
187		311
188	errno = errorno;	312	errno = errorno;
189	count++;	313	count++;
190	}	314	}
191		315
192	free_req (req);	316	req_free (req);
193	}	317	}
194		318
195	return count;	319	return count;
196	}	320	}
197		321
…		…
216		340
217	sigprocmask (SIG_SETMASK, &oldsigset, 0);	341	sigprocmask (SIG_SETMASK, &oldsigset, 0);
218	}	342	}
219		343
220	static void	344	static void
221	send_req (aio_req req)	345	req_send (aio_req req)
222	{	346	{
		347	while (started < wanted && nreqs >= started)
		348	start_thread ();
		349
223	nreqs++;	350	nreqs++;
224		351
225	pthread_mutex_lock (&reqlock);	352	pthread_mutex_lock (&reqlock);
226		353
227	req->next = 0;	354	req->next = 0;
…		…
254	{	381	{
255	aio_req req;	382	aio_req req;
256	Newz (0, req, 1, aio_cb);	383	Newz (0, req, 1, aio_cb);
257	req->type = REQ_QUIT;	384	req->type = REQ_QUIT;
258		385
259	send_req (req);	386	req_send (req);
260	}	387	}
261		388
262	static void min_parallel (int nthreads)	389	static void min_parallel (int nthreads)
263	{	390	{
264	while (nthreads > started)	391	if (wanted < nthreads)
265	start_thread ();	392	wanted = nthreads;
266	}	393	}
267		394
268	static void max_parallel (int nthreads)	395	static void max_parallel (int nthreads)
269	{	396	{
270	int cur = started;	397	int cur = started;
271		398
		399	if (wanted > nthreads)
		400	wanted = nthreads;
		401
272	while (cur > nthreads)	402	while (cur > wanted)
273	{	403	{
274	end_thread ();	404	end_thread ();
275	cur--;	405	cur--;
276	}	406	}
277		407
278	while (started > nthreads)	408	while (started > wanted)
279	{	409	{
280	poll_wait ();	410	poll_wait ();
281	poll_cb ();	411	poll_cb ();
282	}	412	}
283	}	413	}
…		…
290	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	420	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
291	croak ("cannot set result pipe to nonblocking mode");	421	croak ("cannot set result pipe to nonblocking mode");
292		422
293	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	423	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");	424	croak ("cannot set result pipe to nonblocking mode");
295	}
296
297	static void atfork_prepare (void)
298	{
299	for (;;) {
300
301	for (;;)
302	{
303	poll_cb ();
304
305	if (!nreqs)
306	break;
307
308	poll_wait ();
309	}
310
311	pthread_mutex_lock (&reqlock);
312
313	if (!nreqs)
314	break;
315
316	pthread_mutex_unlock (&reqlock);
317	}
318
319	pthread_mutex_lock (&reslock);
320
321	assert (!nreqs && !reqs && !ress);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	int restart = started;
333	started = 0;
334
335	atfork_parent ();
336
337	min_parallel (restart);
338	}	425	}
339		426
340	/*****************************************************************************/	427	/*****************************************************************************/
341	/* work around various missing functions */	428	/* work around various missing functions */
342		429
…		…
347	/*	434	/*
348	* make our pread/pwrite safe against themselves, but not against	435	* make our pread/pwrite safe against themselves, but not against
349	* normal read/write by using a mutex. slows down execution a lot,	436	* normal read/write by using a mutex. slows down execution a lot,
350	* but that's your problem, not mine.	437	* but that's your problem, not mine.
351	*/	438	*/
352	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
353		440
354	static ssize_t	441	static ssize_t
355	pread (int fd, void *buf, size_t count, off_t offset)	442	pread (int fd, void *buf, size_t count, off_t offset)
356	{	443	{
357	ssize_t res;	444	ssize_t res;
358	off_t ooffset;	445	off_t ooffset;
359		446
360	pthread_mutex_lock (&iolock);	447	pthread_mutex_lock (&preadwritelock);
361	ooffset = lseek (fd, 0, SEEK_CUR);	448	ooffset = lseek (fd, 0, SEEK_CUR);
362	lseek (fd, offset, SEEK_SET);	449	lseek (fd, offset, SEEK_SET);
363	res = read (fd, buf, count);	450	res = read (fd, buf, count);
364	lseek (fd, ooffset, SEEK_SET);	451	lseek (fd, ooffset, SEEK_SET);
365	pthread_mutex_unlock (&iolock);	452	pthread_mutex_unlock (&preadwritelock);
366		453
367	return res;	454	return res;
368	}	455	}
369		456
370	static ssize_t	457	static ssize_t
371	pwrite (int fd, void *buf, size_t count, off_t offset)	458	pwrite (int fd, void *buf, size_t count, off_t offset)
372	{	459	{
373	ssize_t res;	460	ssize_t res;
374	off_t ooffset;	461	off_t ooffset;
375		462
376	pthread_mutex_lock (&iolock);	463	pthread_mutex_lock (&preadwritelock);
377	ooffset = lseek (fd, 0, SEEK_CUR);	464	ooffset = lseek (fd, 0, SEEK_CUR);
378	lseek (fd, offset, SEEK_SET);	465	lseek (fd, offset, SEEK_SET);
379	res = write (fd, buf, count);	466	res = write (fd, buf, count);
380	lseek (fd, offset, SEEK_SET);	467	lseek (fd, offset, SEEK_SET);
381	pthread_mutex_unlock (&iolock);	468	pthread_mutex_unlock (&preadwritelock);
382		469
383	return res;	470	return res;
384	}	471	}
385	#endif	472	#endif
386		473
…		…
389	#endif	476	#endif
390		477
391	#if !HAVE_READAHEAD	478	#if !HAVE_READAHEAD
392	# define readahead aio_readahead	479	# define readahead aio_readahead
393		480
394	static char readahead_buf[4096];
395
396	static ssize_t	481	static ssize_t
397	readahead (int fd, off_t offset, size_t count)	482	readahead (int fd, off_t offset, size_t count)
398	{	483	{
		484	char readahead_buf[4096];
		485
399	while (count > 0)	486	while (count > 0)
400	{	487	{
401	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
402		489
403	pread (fd, readahead_buf, len, offset);	490	pread (fd, readahead_buf, len, offset);
…		…
406	}	493	}
407		494
408	errno = 0;	495	errno = 0;
409	}	496	}
410	#endif	497	#endif
		498
		499	#if !HAVE_READDIR_R
		500	# define readdir_r aio_readdir_r
		501
		502	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		503
		504	static int
		505	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		506	{
		507	struct dirent *e;
		508	int errorno;
		509
		510	pthread_mutex_lock (&readdirlock);
		511
		512	e = readdir (dirp);
		513	errorno = errno;
		514
		515	if (e)
		516	{
		517	*res = ent;
		518	strcpy (ent->d_name, e->d_name);
		519	}
		520	else
		521	*res = 0;
		522
		523	pthread_mutex_unlock (&readdirlock);
		524
		525	errno = errorno;
		526	return e ? 0 : -1;
		527	}
		528	#endif
		529
		530	/* sendfile always needs emulation */
		531	static ssize_t
		532	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		533	{
		534	ssize_t res;
		535
		536	if (!count)
		537	return 0;
		538
		539	#if HAVE_SENDFILE
		540	# if __linux
		541	res = sendfile (ofd, ifd, &offset, count);
		542
		543	# elif __freebsd
		544	/*
		545	* Of course, the freebsd sendfile is a dire hack with no thoughts
		546	* wasted on making it similar to other I/O functions.
		547	*/
		548	{
		549	off_t sbytes;
		550	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		551
		552	if (res < 0 && sbytes)
		553	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		554	res = sbytes;
		555	}
		556
		557	# elif __hpux
		558	res = sendfile (ofd, ifd, offset, count, 0, 0);
		559
		560	# elif __solaris
		561	{
		562	struct sendfilevec vec;
		563	size_t sbytes;
		564
		565	vec.sfv_fd = ifd;
		566	vec.sfv_flag = 0;
		567	vec.sfv_off = offset;
		568	vec.sfv_len = count;
		569
		570	res = sendfilev (ofd, &vec, 1, &sbytes);
		571
		572	if (res < 0 && sbytes)
		573	res = sbytes;
		574	}
		575
		576	# endif
		577	#else
		578	res = -1;
		579	errno = ENOSYS;
		580	#endif
		581
		582	if (res < 0
		583	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		584	#if __solaris
		585	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		586	#endif
		587	)
		588	)
		589	{
		590	/* emulate sendfile. this is a major pain in the ass */
		591	char buf[4096];
		592	res = 0;
		593
		594	while (count)
		595	{
		596	ssize_t cnt;
		597
		598	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		599
		600	if (cnt <= 0)
		601	{
		602	if (cnt && !res) res = -1;
		603	break;
		604	}
		605
		606	cnt = write (ofd, buf, cnt);
		607
		608	if (cnt <= 0)
		609	{
		610	if (cnt && !res) res = -1;
		611	break;
		612	}
		613
		614	offset += cnt;
		615	res += cnt;
		616	count -= cnt;
		617	}
		618	}
		619
		620	return res;
		621	}
		622
		623	/* read a full directory */
		624	static int
		625	scandir_ (const char path, void *namesp)
		626	{
		627	DIR *dirp = opendir (path);
		628	union
		629	{
		630	struct dirent d;
		631	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		632	} u;
		633	struct dirent *entp;
		634	char name, names;
		635	int memlen = 4096;
		636	int memofs = 0;
		637	int res = 0;
		638	int errorno;
		639
		640	if (!dirp)
		641	return -1;
		642
		643	names = malloc (memlen);
		644
		645	for (;;)
		646	{
		647	errno = 0, readdir_r (dirp, &u.d, &entp);
		648
		649	if (!entp)
		650	break;
		651
		652	name = entp->d_name;
		653
		654	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		655	{
		656	int len = strlen (name) + 1;
		657
		658	res++;
		659
		660	while (memofs + len > memlen)
		661	{
		662	memlen *= 2;
		663	names = realloc (names, memlen);
		664	if (!names)
		665	break;
		666	}
		667
		668	memcpy (names + memofs, name, len);
		669	memofs += len;
		670	}
		671	}
		672
		673	errorno = errno;
		674	closedir (dirp);
		675
		676	if (errorno)
		677	{
		678	free (names);
		679	errno = errorno;
		680	res = -1;
		681	}
		682
		683	namesp = (void )names;
		684	return res;
		685	}
411		686
412	/*****************************************************************************/	687	/*****************************************************************************/
413		688
414	static void *	689	static void *
415	aio_proc (void *thr_arg)	690	aio_proc (void *thr_arg)
…		…
439		714
440	pthread_mutex_unlock (&reqlock);	715	pthread_mutex_unlock (&reqlock);
441		716
442	errno = 0; /* strictly unnecessary */	717	errno = 0; /* strictly unnecessary */
443		718
444	type = req->type;	719	if (!req->cancelled)
445
446	switch (type)	720	switch (req->type)
447	{	721	{
448	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	722	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
449	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	723	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
450		724
451	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	725	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		726	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
452		727
453	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
454	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
455	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
456		731
457	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	732	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
458	case REQ_CLOSE: req->result = close (req->fd); break;	733	case REQ_CLOSE: req->result = close (req->fd); break;
459	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	734	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
460	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	735	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		736	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		737	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
461	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
462		739
463	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
464	case REQ_FSYNC: req->result = fsync (req->fd); break;	741	case REQ_FSYNC: req->result = fsync (req->fd); break;
		742	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
465		743
466	case REQ_QUIT:	744	case REQ_QUIT:
467	break;	745	break;
468		746
469	default:	747	default:
470	req->result = ENOSYS;	748	req->result = ENOSYS;
471	break;	749	break;
472	}	750	}
473		751
474	req->errorno = errno;	752	req->errorno = errno;
475		753
476	pthread_mutex_lock (&reslock);	754	pthread_mutex_lock (&reslock);
477		755
…		…
495	while (type != REQ_QUIT);	773	while (type != REQ_QUIT);
496		774
497	return 0;	775	return 0;
498	}	776	}
499		777
		778	/*****************************************************************************/
		779
		780	static void atfork_prepare (void)
		781	{
		782	pthread_mutex_lock (&reqlock);
		783	pthread_mutex_lock (&reslock);
		784	#if !HAVE_PREADWRITE
		785	pthread_mutex_lock (&preadwritelock);
		786	#endif
		787	#if !HAVE_READDIR_R
		788	pthread_mutex_lock (&readdirlock);
		789	#endif
		790	}
		791
		792	static void atfork_parent (void)
		793	{
		794	#if !HAVE_READDIR_R
		795	pthread_mutex_unlock (&readdirlock);
		796	#endif
		797	#if !HAVE_PREADWRITE
		798	pthread_mutex_unlock (&preadwritelock);
		799	#endif
		800	pthread_mutex_unlock (&reslock);
		801	pthread_mutex_unlock (&reqlock);
		802	}
		803
		804	static void atfork_child (void)
		805	{
		806	aio_req prv;
		807
		808	started = 0;
		809
		810	while (reqs)
		811	{
		812	prv = reqs;
		813	reqs = prv->next;
		814	req_free (prv);
		815	}
		816
		817	reqs = reqe = 0;
		818
		819	while (ress)
		820	{
		821	prv = ress;
		822	ress = prv->next;
		823	req_free (prv);
		824	}
		825
		826	ress = rese = 0;
		827
		828	close (respipe [0]);
		829	close (respipe [1]);
		830	create_pipe ();
		831
		832	atfork_parent ();
		833	}
		834
500	#define dREQ \	835	#define dREQ \
501	aio_req req; \	836	aio_req req; \
502	\	837	\
503	if (SvOK (callback) && !SvROK (callback)) \	838	if (SvOK (callback) && !SvROK (callback)) \
504	croak ("clalback must be undef or of reference type"); \	839	croak ("callback must be undef or of reference type"); \
505	\	840	\
506	Newz (0, req, 1, aio_cb); \	841	Newz (0, req, 1, aio_cb); \
507	if (!req) \	842	if (!req) \
508	croak ("out of memory during aio_req allocation"); \	843	croak ("out of memory during aio_req allocation"); \
509	\	844	\
510	req->callback = newSVsv (callback);	845	req->callback = newSVsv (callback)
		846
		847	#define REQ_SEND \
		848	req_send (req); \
		849	\
		850	if (GIMME_V != G_VOID) \
		851	XPUSHs (req_sv (req));
511		852
512	MODULE = IO::AIO PACKAGE = IO::AIO	853	MODULE = IO::AIO PACKAGE = IO::AIO
513		854
514	PROTOTYPES: ENABLE	855	PROTOTYPES: ENABLE
515		856
516	BOOT:	857	BOOT:
517	{	858	{
		859	HV *stash = gv_stashpv ("IO::AIO", 1);
		860	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		861	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		862	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		863
518	create_pipe ();	864	create_pipe ();
519	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	865	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
520	}	866	}
521		867
522	void	868	void
523	min_parallel(nthreads)	869	min_parallel (nthreads)
524	int nthreads	870	int nthreads
525	PROTOTYPE: $	871	PROTOTYPE: $
526		872
527	void	873	void
528	max_parallel(nthreads)	874	max_parallel (nthreads)
529	int nthreads	875	int nthreads
530	PROTOTYPE: $	876	PROTOTYPE: $
531		877
532	int	878	int
533	max_outstanding(nreqs)	879	max_outstanding (nreqs)
534	int nreqs	880	int nreqs
535	PROTOTYPE: $	881	PROTOTYPE: $
536	CODE:	882	CODE:
537	RETVAL = max_outstanding;	883	RETVAL = max_outstanding;
538	max_outstanding = nreqs;	884	max_outstanding = nreqs;
539		885
540	void	886	void
541	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
542	SV * pathname	888	SV * pathname
543	int flags	889	int flags
544	int mode	890	int mode
545	SV * callback	891	SV * callback
546	PROTOTYPE: $$$;$	892	PROTOTYPE: $$$;$
547	CODE:	893	PPCODE:
548	{	894	{
549	dREQ;	895	dREQ;
550		896
551	req->type = REQ_OPEN;	897	req->type = REQ_OPEN;
552	req->data = newSVsv (pathname);	898	req->data = newSVsv (pathname);
553	req->dataptr = SvPVbyte_nolen (req->data);	899	req->dataptr = SvPVbyte_nolen (req->data);
554	req->fd = flags;	900	req->fd = flags;
555	req->mode = mode;	901	req->mode = mode;
556		902
557	send_req (req);	903	REQ_SEND;
558	}	904	}
559		905
560	void	906	void
561	aio_close(fh,callback=&PL_sv_undef)	907	aio_close (fh,callback=&PL_sv_undef)
562	SV * fh	908	SV * fh
563	SV * callback	909	SV * callback
564	PROTOTYPE: $;$	910	PROTOTYPE: $;$
565	ALIAS:	911	ALIAS:
566	aio_close = REQ_CLOSE	912	aio_close = REQ_CLOSE
567	aio_fsync = REQ_FSYNC	913	aio_fsync = REQ_FSYNC
568	aio_fdatasync = REQ_FDATASYNC	914	aio_fdatasync = REQ_FDATASYNC
569	CODE:	915	PPCODE:
570	{	916	{
571	dREQ;	917	dREQ;
572		918
573	req->type = ix;	919	req->type = ix;
574	req->fh = newSVsv (fh);	920	req->fh = newSVsv (fh);
575	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	921	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
576		922
577	send_req (req);	923	REQ_SEND (req);
578	}	924	}
579		925
580	void	926	void
581	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	927	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
582	SV * fh	928	SV * fh
583	UV offset	929	UV offset
584	IV length	930	UV length
585	SV * data	931	SV * data
586	IV dataoffset	932	UV dataoffset
587	SV * callback	933	SV * callback
588	ALIAS:	934	ALIAS:
589	aio_read = REQ_READ	935	aio_read = REQ_READ
590	aio_write = REQ_WRITE	936	aio_write = REQ_WRITE
591	PROTOTYPE: $$$$$;$	937	PROTOTYPE: $$$$$;$
592	CODE:	938	PPCODE:
593	{	939	{
594	aio_req req;	940	aio_req req;
595	STRLEN svlen;	941	STRLEN svlen;
596	char *svptr = SvPVbyte (data, svlen);	942	char *svptr = SvPVbyte (data, svlen);
597		943
…		…
629	req->offset = offset;	975	req->offset = offset;
630	req->length = length;	976	req->length = length;
631	req->data = SvREFCNT_inc (data);	977	req->data = SvREFCNT_inc (data);
632	req->dataptr = (char *)svptr + dataoffset;	978	req->dataptr = (char *)svptr + dataoffset;
633		979
634	send_req (req);	980	if (!SvREADONLY (data))
		981	{
		982	SvREADONLY_on (data);
		983	req->data2ptr = (void *)data;
		984	}
		985
		986	REQ_SEND;
635	}	987	}
636	}	988	}
637		989
638	void	990	void
		991	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		992	SV * out_fh
		993	SV * in_fh
		994	UV in_offset
		995	UV length
		996	SV * callback
		997	PROTOTYPE: $$$$;$
		998	PPCODE:
		999	{
		1000	dREQ;
		1001
		1002	req->type = REQ_SENDFILE;
		1003	req->fh = newSVsv (out_fh);
		1004	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1005	req->fh2 = newSVsv (in_fh);
		1006	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1007	req->offset = in_offset;
		1008	req->length = length;
		1009
		1010	REQ_SEND;
		1011	}
		1012
		1013	void
639	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1014	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
640	SV * fh	1015	SV * fh
641	UV offset	1016	UV offset
642	IV length	1017	IV length
643	SV * callback	1018	SV * callback
644	PROTOTYPE: $$$;$	1019	PROTOTYPE: $$$;$
645	CODE:	1020	PPCODE:
646	{	1021	{
647	dREQ;	1022	dREQ;
648		1023
649	req->type = REQ_READAHEAD;	1024	req->type = REQ_READAHEAD;
650	req->fh = newSVsv (fh);	1025	req->fh = newSVsv (fh);
651	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1026	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
652	req->offset = offset;	1027	req->offset = offset;
653	req->length = length;	1028	req->length = length;
654		1029
655	send_req (req);	1030	REQ_SEND;
656	}	1031	}
657		1032
658	void	1033	void
659	aio_stat(fh_or_path,callback=&PL_sv_undef)	1034	aio_stat (fh_or_path,callback=&PL_sv_undef)
660	SV * fh_or_path	1035	SV * fh_or_path
661	SV * callback	1036	SV * callback
662	ALIAS:	1037	ALIAS:
663	aio_stat = REQ_STAT	1038	aio_stat = REQ_STAT
664	aio_lstat = REQ_LSTAT	1039	aio_lstat = REQ_LSTAT
665	CODE:	1040	PPCODE:
666	{	1041	{
667	dREQ;	1042	dREQ;
668		1043
669	New (0, req->statdata, 1, Stat_t);	1044	New (0, req->statdata, 1, Stat_t);
670	if (!req->statdata)	1045	if (!req->statdata)
671	{	1046	{
672	free_req (req);	1047	req_free (req);
673	croak ("out of memory during aio_req->statdata allocation");	1048	croak ("out of memory during aio_req->statdata allocation");
674	}	1049	}
675		1050
676	if (SvPOK (fh_or_path))	1051	if (SvPOK (fh_or_path))
677	{	1052	{
…		…
684	req->type = REQ_FSTAT;	1059	req->type = REQ_FSTAT;
685	req->fh = newSVsv (fh_or_path);	1060	req->fh = newSVsv (fh_or_path);
686	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
687	}	1062	}
688		1063
689	send_req (req);	1064	REQ_SEND;
690	}	1065	}
691		1066
692	void	1067	void
693	aio_unlink(pathname,callback=&PL_sv_undef)	1068	aio_unlink (pathname,callback=&PL_sv_undef)
694	SV * pathname	1069	SV * pathname
695	SV * callback	1070	SV * callback
696	ALIAS:	1071	ALIAS:
697	aio_unlink = REQ_UNLINK	1072	aio_unlink = REQ_UNLINK
698	aio_rmdir = REQ_RMDIR	1073	aio_rmdir = REQ_RMDIR
		1074	aio_readdir = REQ_READDIR
699	CODE:	1075	PPCODE:
700	{	1076	{
701	dREQ;	1077	dREQ;
702		1078
703	req->type = ix;	1079	req->type = ix;
704	req->data = newSVsv (pathname);	1080	req->data = newSVsv (pathname);
705	req->dataptr = SvPVbyte_nolen (req->data);	1081	req->dataptr = SvPVbyte_nolen (req->data);
706		1082
707	send_req (req);	1083	REQ_SEND;
708	}	1084	}
709		1085
710	void	1086	void
711	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1087	aio_link (oldpath,newpath,callback=&PL_sv_undef)
712	SV * oldpath	1088	SV * oldpath
713	SV * newpath	1089	SV * newpath
714	SV * callback	1090	SV * callback
		1091	ALIAS:
		1092	aio_link = REQ_LINK
		1093	aio_symlink = REQ_SYMLINK
		1094	aio_rename = REQ_RENAME
715	CODE:	1095	PPCODE:
716	{	1096	{
717	dREQ;	1097	dREQ;
718		1098
719	req->type = REQ_SYMLINK;	1099	req->type = ix;
720	req->fh = newSVsv (oldpath);	1100	req->fh = newSVsv (oldpath);
721	req->data2ptr = SvPVbyte_nolen (req->fh);	1101	req->data2ptr = SvPVbyte_nolen (req->fh);
722	req->data = newSVsv (newpath);	1102	req->data = newSVsv (newpath);
723	req->dataptr = SvPVbyte_nolen (req->data);	1103	req->dataptr = SvPVbyte_nolen (req->data);
724		1104
725	send_req (req);	1105	REQ_SEND;
726	}	1106	}
727		1107
		1108	#if 0
		1109
		1110	# undocumented, because it does not cancel active requests
728	void	1111	void
		1112	cancel_most_requests ()
		1113	PROTOTYPE:
		1114	CODE:
		1115	{
		1116	aio_req *req;
		1117
		1118	pthread_mutex_lock (&reqlock);
		1119	for (req = reqs; req; req = req->next)
		1120	req->flags \|= 1;
		1121	pthread_mutex_unlock (&reqlock);
		1122
		1123	pthread_mutex_lock (&reslock);
		1124	for (req = ress; req; req = req->next)
		1125	req->flags \|= 1;
		1126	pthread_mutex_unlock (&reslock);
		1127	}
		1128
		1129	#endif
		1130
		1131	void
729	flush()	1132	flush ()
730	PROTOTYPE:	1133	PROTOTYPE:
731	CODE:	1134	CODE:
732	while (nreqs)	1135	while (nreqs)
733	{	1136	{
734	poll_wait ();	1137	poll_wait ();
…		…
774	CODE:	1177	CODE:
775	RETVAL = nreqs;	1178	RETVAL = nreqs;
776	OUTPUT:	1179	OUTPUT:
777	RETVAL	1180	RETVAL
778		1181
		1182	MODULE = IO::AIO PACKAGE = IO::AIO::CB
		1183
		1184	void
		1185	cancel (aio_req_ornot req)
		1186	PROTOTYPE:
		1187	CODE:
		1188	req->cancelled = 1;
		1189

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC vs. Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC vs.
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC