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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC

…		…
1	#ifndef _REENTRANT
2	# define _REENTRANT 1	1	#define _REENTRANT 1
3	#endif
4	#include <errno.h>	2	#include <errno.h>
5		3
6	#include "EXTERN.h"	4	#include "EXTERN.h"
7	#include "perl.h"	5	#include "perl.h"
8	#include "XSUB.h"	6	#include "XSUB.h"
9		7
10	#include "autoconf/config.h"	8	#include "autoconf/config.h"
11		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14		16	#include <limits.h>
15	#include <unistd.h>	17	#include <unistd.h>
16	#include <fcntl.h>	18	#include <fcntl.h>
17	#include <signal.h>	19	#include <signal.h>
18	#include <sched.h>	20	#include <sched.h>
19		21
20	#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
21		36
22	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	37	/* used for struct dirent, AIX doesn't provide it */
23	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	#ifndef NAME_MAX
24	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	39	# define NAME_MAX 4096
		40	#endif
25		41
26	#if __ia64	42	#if __ia64
27	# define STACKSIZE 65536	43	# define STACKSIZE 65536
28	#else	44	#else
29	# define STACKSIZE 4096	45	# define STACKSIZE 8192
30	#endif	46	#endif
31		47
32	enum {	48	enum {
33	REQ_QUIT,	49	REQ_QUIT,
34	REQ_OPEN, REQ_CLOSE,	50	REQ_OPEN, REQ_CLOSE,
35	REQ_READ, REQ_WRITE, REQ_READAHEAD,	51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		52	REQ_SENDFILE,
36	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37	REQ_FSYNC, REQ_FDATASYNC,	54	REQ_FSYNC, REQ_FDATASYNC,
		55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		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;
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
		154	static void req_free (aio_req req)
		155	{
		156	if (req->self)
		157	{
		158	sv_unmagic (req->self, PERL_MAGIC_ext);
		159	SvREFCNT_dec (req->self);
		160	}
		161
		162	if (req->data)
		163	SvREFCNT_dec (req->data);
		164
		165	if (req->fh)
		166	SvREFCNT_dec (req->fh);
		167
		168	if (req->fh2)
		169	SvREFCNT_dec (req->fh2);
		170
		171	if (req->statdata)
		172	Safefree (req->statdata);
		173
		174	if (req->callback)
		175	SvREFCNT_dec (req->callback);
		176
		177	if (req->type == REQ_READDIR && req->result >= 0)
		178	free (req->data2ptr);
		179
		180	Safefree (req);
		181	}
		182
72	static void	183	static void
73	poll_wait ()	184	poll_wait ()
74	{	185	{
75	if (nreqs && !ress)	186	if (nreqs && !ress)
76	{	187	{
…		…
85	static int	196	static int
86	poll_cb ()	197	poll_cb ()
87	{	198	{
88	dSP;	199	dSP;
89	int count = 0;	200	int count = 0;
		201	int do_croak = 0;
90	aio_req req, prv;	202	aio_req req;
91		203
		204	for (;;)
		205	{
92	pthread_mutex_lock (&reslock);	206	pthread_mutex_lock (&reslock);
		207	req = ress;
93		208
94	{	209	if (req)
		210	{
		211	ress = req->next;
		212
		213	if (!ress)
		214	{
95	/* read any signals sent by the worker threads */	215	/* read any signals sent by the worker threads */
96	char buf [32];	216	char buf [32];
97	while (read (respipe [0], buf, 32) > 0)	217	while (read (respipe [0], buf, 32) == 32)
		218	;
		219
		220	rese = 0;
		221	}
98	;	222	}
99	}
100		223
101	req = ress;
102	ress = rese = 0;
103
104	pthread_mutex_unlock (&reslock);	224	pthread_mutex_unlock (&reslock);
105		225
106	while (req)	226	if (!req)
107	{	227	break;
		228
108	nreqs--;	229	nreqs--;
109		230
110	if (req->type == REQ_QUIT)	231	if (req->type == REQ_QUIT)
111	started--;	232	started--;
112	else	233	else
113	{	234	{
114	int errorno = errno;	235	int errorno = errno;
115	errno = req->errorno;	236	errno = req->errorno;
116		237
117	if (req->type == REQ_READ)	238	if (req->type == REQ_READ)
118	SvCUR_set (req->data, req->dataoffset	239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
119	+ req->result > 0 ? req->result : 0);
120		240
		241	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		242	SvREADONLY_off (req->data);
		243
121	if (req->data)	244	if (req->statdata)
122	SvREFCNT_dec (req->data);
123
124	if (req->fh)
125	SvREFCNT_dec (req->fh);
126
127	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
128	{	245	{
129	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130	PL_laststatval = req->result;	247	PL_laststatval = req->result;
131	PL_statcache = *(req->statdata);	248	PL_statcache = *(req->statdata);
132
133	Safefree (req->statdata);
134	}	249	}
135		250
136	ENTER;	251	ENTER;
137	PUSHMARK (SP);	252	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));
139		253
140	if (req->type == REQ_OPEN)	254	if (req->type == REQ_READDIR)
141	{	255	{
142	/* convert fd to fh */	256	SV *rv = &PL_sv_undef;
143	SV *fh;
144		257
145	PUTBACK;	258	if (req->result >= 0)
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	259	{
147	SPAGAIN;	260	char *buf = req->data2ptr;
		261	AV *av = newAV ();
148		262
149	fh = SvREFCNT_inc (POPs);	263	while (req->result)
		264	{
		265	SV *sv = newSVpv (buf, 0);
150		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
151	PUSHMARK (SP);	275	XPUSHs (rv);
152	XPUSHs (sv_2mortal (fh));
153	}	276	}
		277	else
		278	{
		279	XPUSHs (sv_2mortal (newSViv (req->result)));
154		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
155	if (SvOK (req->callback))	297	if (SvOK (req->callback) && !req->cancelled)
156	{	298	{
157	PUTBACK;	299	PUTBACK;
158	call_sv (req->callback, G_VOID \| G_EVAL);	300	call_sv (req->callback, G_VOID \| G_EVAL);
159	SPAGAIN;	301	SPAGAIN;
		302
		303	if (SvTRUE (ERRSV))
		304	{
		305	req_free (req);
		306	croak (0);
		307	}
160	}	308	}
161		309
162	LEAVE;	310	LEAVE;
163
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		311
167	errno = errorno;	312	errno = errorno;
168	count++;	313	count++;
169	}	314	}
170		315
171	prv = req;
172	req = req->next;
173	Safefree (prv);	316	req_free (req);
174
175	/* TODO: croak on errors? */
176	}	317	}
177		318
178	return count;	319	return count;
179	}	320	}
180		321
…		…
199		340
200	sigprocmask (SIG_SETMASK, &oldsigset, 0);	341	sigprocmask (SIG_SETMASK, &oldsigset, 0);
201	}	342	}
202		343
203	static void	344	static void
204	send_req (aio_req req)	345	req_send (aio_req req)
205	{	346	{
		347	while (started < wanted && nreqs >= started)
		348	start_thread ();
		349
206	nreqs++;	350	nreqs++;
207		351
208	pthread_mutex_lock (&reqlock);	352	pthread_mutex_lock (&reqlock);
209		353
210	req->next = 0;	354	req->next = 0;
…		…
218	reqe = reqs = req;	362	reqe = reqs = req;
219		363
220	pthread_cond_signal (&reqwait);	364	pthread_cond_signal (&reqwait);
221	pthread_mutex_unlock (&reqlock);	365	pthread_mutex_unlock (&reqlock);
222		366
223	while (nreqs > max_outstanding)	367	if (nreqs > max_outstanding)
		368	for (;;)
		369	{
		370	poll_cb ();
		371
		372	if (nreqs <= max_outstanding)
		373	break;
		374
		375	poll_wait ();
		376	}
		377	}
		378
		379	static void
		380	end_thread (void)
		381	{
		382	aio_req req;
		383	Newz (0, req, 1, aio_cb);
		384	req->type = REQ_QUIT;
		385
		386	req_send (req);
		387	}
		388
		389	static void min_parallel (int nthreads)
		390	{
		391	if (wanted < nthreads)
		392	wanted = nthreads;
		393	}
		394
		395	static void max_parallel (int nthreads)
		396	{
		397	int cur = started;
		398
		399	if (wanted > nthreads)
		400	wanted = nthreads;
		401
		402	while (cur > wanted)
		403	{
		404	end_thread ();
		405	cur--;
		406	}
		407
		408	while (started > wanted)
224	{	409	{
225	poll_wait ();	410	poll_wait ();
226	poll_cb ();	411	poll_cb ();
227	}	412	}
228	}	413	}
229		414
230	static void	415	static void create_pipe ()
231	end_thread (void)
232	{	416	{
233	aio_req req;	417	if (pipe (respipe))
234	New (0, req, 1, aio_cb);	418	croak ("unable to initialize result pipe");
235	req->type = REQ_QUIT;
236		419
237	send_req (req);	420	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
238	}	421	croak ("cannot set result pipe to nonblocking mode");
239		422
		423	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		424	croak ("cannot set result pipe to nonblocking mode");
		425	}
		426
		427	/*****************************************************************************/
240	/* work around various missing functions */	428	/* work around various missing functions */
241		429
242	#if !HAVE_PREADWRITE	430	#if !HAVE_PREADWRITE
243	# define pread aio_pread	431	# define pread aio_pread
244	# define pwrite aio_pwrite	432	# define pwrite aio_pwrite
…		…
246	/*	434	/*
247	* make our pread/pwrite safe against themselves, but not against	435	* make our pread/pwrite safe against themselves, but not against
248	* 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,
249	* but that's your problem, not mine.	437	* but that's your problem, not mine.
250	*/	438	*/
251	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
252		440
253	static ssize_t	441	static ssize_t
254	pread (int fd, void *buf, size_t count, off_t offset)	442	pread (int fd, void *buf, size_t count, off_t offset)
255	{	443	{
256	ssize_t res;	444	ssize_t res;
257	off_t ooffset;	445	off_t ooffset;
258		446
259	pthread_mutex_lock (&iolock);	447	pthread_mutex_lock (&preadwritelock);
260	ooffset = lseek (fd, 0, SEEK_CUR);	448	ooffset = lseek (fd, 0, SEEK_CUR);
261	lseek (fd, offset, SEEK_SET);	449	lseek (fd, offset, SEEK_SET);
262	res = read (fd, buf, count);	450	res = read (fd, buf, count);
263	lseek (fd, ooffset, SEEK_SET);	451	lseek (fd, ooffset, SEEK_SET);
264	pthread_mutex_unlock (&iolock);	452	pthread_mutex_unlock (&preadwritelock);
265		453
266	return res;	454	return res;
267	}	455	}
268		456
269	static ssize_t	457	static ssize_t
270	pwrite (int fd, void *buf, size_t count, off_t offset)	458	pwrite (int fd, void *buf, size_t count, off_t offset)
271	{	459	{
272	ssize_t res;	460	ssize_t res;
273	off_t ooffset;	461	off_t ooffset;
274		462
275	pthread_mutex_lock (&iolock);	463	pthread_mutex_lock (&preadwritelock);
276	ooffset = lseek (fd, 0, SEEK_CUR);	464	ooffset = lseek (fd, 0, SEEK_CUR);
277	lseek (fd, offset, SEEK_SET);	465	lseek (fd, offset, SEEK_SET);
278	res = write (fd, buf, count);	466	res = write (fd, buf, count);
279	lseek (fd, offset, SEEK_SET);	467	lseek (fd, offset, SEEK_SET);
280	pthread_mutex_unlock (&iolock);	468	pthread_mutex_unlock (&preadwritelock);
281		469
282	return res;	470	return res;
283	}	471	}
284	#endif	472	#endif
285		473
…		…
288	#endif	476	#endif
289		477
290	#if !HAVE_READAHEAD	478	#if !HAVE_READAHEAD
291	# define readahead aio_readahead	479	# define readahead aio_readahead
292		480
293	static char readahead_buf[4096];
294
295	static ssize_t	481	static ssize_t
296	readahead (int fd, off_t offset, size_t count)	482	readahead (int fd, off_t offset, size_t count)
297	{	483	{
		484	char readahead_buf[4096];
		485
298	while (count > 0)	486	while (count > 0)
299	{	487	{
300	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301		489
302	pread (fd, readahead_buf, len, offset);	490	pread (fd, readahead_buf, len, offset);
…		…
305	}	493	}
306		494
307	errno = 0;	495	errno = 0;
308	}	496	}
309	#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	}
		686
		687	/*****************************************************************************/
310		688
311	static void *	689	static void *
312	aio_proc (void *thr_arg)	690	aio_proc (void *thr_arg)
313	{	691	{
314	aio_req req;	692	aio_req req;
…		…
336		714
337	pthread_mutex_unlock (&reqlock);	715	pthread_mutex_unlock (&reqlock);
338		716
339	errno = 0; /* strictly unnecessary */	717	errno = 0; /* strictly unnecessary */
340		718
341	type = req->type;	719	if (!req->cancelled)
342
343	switch (type)	720	switch (req->type)
344	{	721	{
345	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;
346	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;
347		724
348	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;
349		727
350	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353		731
354	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;
355	case REQ_CLOSE: req->result = close (req->fd); break;	733	case REQ_CLOSE: req->result = close (req->fd); break;
356	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	734	case REQ_UNLINK: req->result = unlink (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;
		738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
357		739
358	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359	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;
360		743
361	case REQ_QUIT:	744	case REQ_QUIT:
362	break;	745	break;
363		746
364	default:	747	default:
365	req->result = ENOSYS;	748	req->result = ENOSYS;
366	break;	749	break;
367	}	750	}
368		751
369	req->errorno = errno;	752	req->errorno = errno;
370		753
371	pthread_mutex_lock (&reslock);	754	pthread_mutex_lock (&reslock);
372		755
…		…
390	while (type != REQ_QUIT);	773	while (type != REQ_QUIT);
391		774
392	return 0;	775	return 0;
393	}	776	}
394		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
		835	#define dREQ \
		836	aio_req req; \
		837	\
		838	if (SvOK (callback) && !SvROK (callback)) \
		839	croak ("callback must be undef or of reference type"); \
		840	\
		841	Newz (0, req, 1, aio_cb); \
		842	if (!req) \
		843	croak ("out of memory during aio_req allocation"); \
		844	\
		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));
		852
395	MODULE = IO::AIO PACKAGE = IO::AIO	853	MODULE = IO::AIO PACKAGE = IO::AIO
396		854
397	PROTOTYPES: ENABLE	855	PROTOTYPES: ENABLE
398		856
399	BOOT:	857	BOOT:
400	{	858	{
401	if (pipe (respipe))	859	HV *stash = gv_stashpv ("IO::AIO", 1);
402	croak ("unable to initialize result pipe");	860	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		861	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		862	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
403		863
404	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	864	create_pipe ();
405	croak ("cannot set result pipe to nonblocking mode");	865	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
406
407	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
408	croak ("cannot set result pipe to nonblocking mode");
409	}	866	}
410		867
411	void	868	void
412	min_parallel(nthreads)	869	min_parallel (nthreads)
413	int nthreads	870	int nthreads
414	PROTOTYPE: $	871	PROTOTYPE: $
415	CODE:
416	while (nthreads > started)
417	start_thread ();
418		872
419	void	873	void
420	max_parallel(nthreads)	874	max_parallel (nthreads)
421	int nthreads	875	int nthreads
422	PROTOTYPE: $	876	PROTOTYPE: $
423	CODE:
424	{
425	int cur = started;
426	while (cur > nthreads)
427	{
428	end_thread ();
429	cur--;
430	}
431
432	while (started > nthreads)
433	{
434	poll_wait ();
435	poll_cb ();
436	}
437	}
438		877
439	int	878	int
440	max_outstanding(nreqs)	879	max_outstanding (nreqs)
441	int nreqs	880	int nreqs
442	PROTOTYPE: $	881	PROTOTYPE: $
443	CODE:	882	CODE:
444	RETVAL = max_outstanding;	883	RETVAL = max_outstanding;
445	max_outstanding = nreqs;	884	max_outstanding = nreqs;
446		885
447	void	886	void
448	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
449	SV * pathname	888	SV * pathname
450	int flags	889	int flags
451	int mode	890	int mode
452	SV * callback	891	SV * callback
453	PROTOTYPE: $$$;$	892	PROTOTYPE: $$$;$
454	CODE:	893	PPCODE:
455	{	894	{
456	aio_req req;	895	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		896
463	req->type = REQ_OPEN;	897	req->type = REQ_OPEN;
464	req->data = newSVsv (pathname);	898	req->data = newSVsv (pathname);
465	req->dataptr = SvPV_nolen (req->data);	899	req->dataptr = SvPVbyte_nolen (req->data);
466	req->fd = flags;	900	req->fd = flags;
467	req->mode = mode;	901	req->mode = mode;
468	req->callback = SvREFCNT_inc (callback);
469		902
470	send_req (req);	903	REQ_SEND;
471	}	904	}
472		905
473	void	906	void
474	aio_close(fh,callback=&PL_sv_undef)	907	aio_close (fh,callback=&PL_sv_undef)
475	SV * fh	908	SV * fh
476	SV * callback	909	SV * callback
477	PROTOTYPE: $;$	910	PROTOTYPE: $;$
478	ALIAS:	911	ALIAS:
479	aio_close = REQ_CLOSE	912	aio_close = REQ_CLOSE
480	aio_fsync = REQ_FSYNC	913	aio_fsync = REQ_FSYNC
481	aio_fdatasync = REQ_FDATASYNC	914	aio_fdatasync = REQ_FDATASYNC
482	CODE:	915	PPCODE:
483	{	916	{
484	aio_req req;	917	dREQ;
485
486	Newz (0, req, 1, aio_cb);
487
488	if (!req)
489	croak ("out of memory during aio_req allocation");
490		918
491	req->type = ix;	919	req->type = ix;
492	req->fh = newSVsv (fh);	920	req->fh = newSVsv (fh);
493	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	921	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494	req->callback = SvREFCNT_inc (callback);
495		922
496	send_req (req);	923	REQ_SEND (req);
497	}	924	}
498		925
499	void	926	void
500	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	927	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501	SV * fh	928	SV * fh
502	UV offset	929	UV offset
503	IV length	930	UV length
504	SV * data	931	SV * data
505	IV dataoffset	932	UV dataoffset
506	SV * callback	933	SV * callback
507	ALIAS:	934	ALIAS:
508	aio_read = REQ_READ	935	aio_read = REQ_READ
509	aio_write = REQ_WRITE	936	aio_write = REQ_WRITE
510	PROTOTYPE: $$$$$;$	937	PROTOTYPE: $$$$$;$
511	CODE:	938	PPCODE:
512	{	939	{
513	aio_req req;	940	aio_req req;
514	STRLEN svlen;	941	STRLEN svlen;
515	char *svptr = SvPV (data, svlen);	942	char *svptr = SvPVbyte (data, svlen);
516		943
517	SvUPGRADE (data, SVt_PV);	944	SvUPGRADE (data, SVt_PV);
518	SvPOK_on (data);	945	SvPOK_on (data);
519		946
520	if (dataoffset < 0)	947	if (dataoffset < 0)
…		…
536	}	963	}
537		964
538	if (length < 0)	965	if (length < 0)
539	croak ("length must not be negative");	966	croak ("length must not be negative");
540		967
541	Newz (0, req, 1, aio_cb);	968	{
		969	dREQ;
542		970
543	if (!req)
544	croak ("out of memory during aio_req allocation");
545
546	req->type = ix;	971	req->type = ix;
547	req->fh = newSVsv (fh);	972	req->fh = newSVsv (fh);
548	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549	: IoOFP (sv_2io (fh)));	974	: IoOFP (sv_2io (fh)));
550	req->offset = offset;	975	req->offset = offset;
		976	req->length = length;
		977	req->data = SvREFCNT_inc (data);
		978	req->dataptr = (char *)svptr + dataoffset;
		979
		980	if (!SvREADONLY (data))
		981	{
		982	SvREADONLY_on (data);
		983	req->data2ptr = (void *)data;
		984	}
		985
		986	REQ_SEND;
		987	}
		988	}
		989
		990	void
		991	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		992	SV * out_fh
		993	SV * in_fh
		994	UV in_offset
		995	UV length
		996	SV * callback
		997	PROTOTYPE: $$$$;$
		998	PPCODE:
		999	{
		1000	dREQ;
		1001
		1002	req->type = REQ_SENDFILE;
		1003	req->fh = newSVsv (out_fh);
		1004	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1005	req->fh2 = newSVsv (in_fh);
		1006	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1007	req->offset = in_offset;
551	req->length = length;	1008	req->length = length;
552	req->data = SvREFCNT_inc (data);
553	req->dataptr = (char *)svptr + dataoffset;
554	req->callback = SvREFCNT_inc (callback);
555		1009
556	send_req (req);	1010	REQ_SEND;
557	}	1011	}
558		1012
559	void	1013	void
560	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1014	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
561	SV * fh	1015	SV * fh
562	UV offset	1016	UV offset
563	IV length	1017	IV length
564	SV * callback	1018	SV * callback
565	PROTOTYPE: $$$;$	1019	PROTOTYPE: $$$;$
566	CODE:	1020	PPCODE:
567	{	1021	{
568	aio_req req;	1022	dREQ;
569
570	if (length < 0)
571	croak ("length must not be negative");
572
573	Newz (0, req, 1, aio_cb);
574
575	if (!req)
576	croak ("out of memory during aio_req allocation");
577		1023
578	req->type = REQ_READAHEAD;	1024	req->type = REQ_READAHEAD;
579	req->fh = newSVsv (fh);	1025	req->fh = newSVsv (fh);
580	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1026	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581	req->offset = offset;	1027	req->offset = offset;
582	req->length = length;	1028	req->length = length;
583	req->callback = SvREFCNT_inc (callback);
584		1029
585	send_req (req);	1030	REQ_SEND;
586	}	1031	}
587		1032
588	void	1033	void
589	aio_stat(fh_or_path,callback=&PL_sv_undef)	1034	aio_stat (fh_or_path,callback=&PL_sv_undef)
590	SV * fh_or_path	1035	SV * fh_or_path
591	SV * callback	1036	SV * callback
592	ALIAS:	1037	ALIAS:
593	aio_stat = REQ_STAT	1038	aio_stat = REQ_STAT
594	aio_lstat = REQ_LSTAT	1039	aio_lstat = REQ_LSTAT
595	CODE:	1040	PPCODE:
596	{	1041	{
597	aio_req req;	1042	dREQ;
598
599	Newz (0, req, 1, aio_cb);
600
601	if (!req)
602	croak ("out of memory during aio_req allocation");
603		1043
604	New (0, req->statdata, 1, Stat_t);	1044	New (0, req->statdata, 1, Stat_t);
605
606	if (!req->statdata)	1045	if (!req->statdata)
		1046	{
		1047	req_free (req);
607	croak ("out of memory during aio_req->statdata allocation");	1048	croak ("out of memory during aio_req->statdata allocation");
		1049	}
608		1050
609	if (SvPOK (fh_or_path))	1051	if (SvPOK (fh_or_path))
610	{	1052	{
611	req->type = ix;	1053	req->type = ix;
612	req->data = newSVsv (fh_or_path);	1054	req->data = newSVsv (fh_or_path);
613	req->dataptr = SvPV_nolen (req->data);	1055	req->dataptr = SvPVbyte_nolen (req->data);
614	}	1056	}
615	else	1057	else
616	{	1058	{
617	req->type = REQ_FSTAT;	1059	req->type = REQ_FSTAT;
618	req->fh = newSVsv (fh_or_path);	1060	req->fh = newSVsv (fh_or_path);
619	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620	}	1062	}
621		1063
622	req->callback = SvREFCNT_inc (callback);	1064	REQ_SEND;
623
624	send_req (req);
625	}	1065	}
626		1066
627	void	1067	void
628	aio_unlink(pathname,callback=&PL_sv_undef)	1068	aio_unlink (pathname,callback=&PL_sv_undef)
629	SV * pathname	1069	SV * pathname
630	SV * callback	1070	SV * callback
		1071	ALIAS:
		1072	aio_unlink = REQ_UNLINK
		1073	aio_rmdir = REQ_RMDIR
		1074	aio_readdir = REQ_READDIR
631	CODE:	1075	PPCODE:
632	{	1076	{
633	aio_req req;	1077	dREQ;
634		1078
635	Newz (0, req, 1, aio_cb);	1079	req->type = ix;
		1080	req->data = newSVsv (pathname);
		1081	req->dataptr = SvPVbyte_nolen (req->data);
636		1082
637	if (!req)	1083	REQ_SEND;
638	croak ("out of memory during aio_req allocation");	1084	}
		1085
		1086	void
		1087	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1088	SV * oldpath
		1089	SV * newpath
		1090	SV * callback
		1091	ALIAS:
		1092	aio_link = REQ_LINK
		1093	aio_symlink = REQ_SYMLINK
		1094	aio_rename = REQ_RENAME
		1095	PPCODE:
		1096	{
		1097	dREQ;
639		1098
640	req->type = REQ_UNLINK;	1099	req->type = ix;
		1100	req->fh = newSVsv (oldpath);
		1101	req->data2ptr = SvPVbyte_nolen (req->fh);
641	req->data = newSVsv (pathname);	1102	req->data = newSVsv (newpath);
642	req->dataptr = SvPV_nolen (req->data);	1103	req->dataptr = SvPVbyte_nolen (req->data);
643	req->callback = SvREFCNT_inc (callback);
644		1104
645	send_req (req);	1105	REQ_SEND;
646	}	1106	}
647		1107
		1108	#if 0
		1109
		1110	# undocumented, because it does not cancel active requests
648	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
649	flush()	1132	flush ()
650	PROTOTYPE:	1133	PROTOTYPE:
651	CODE:	1134	CODE:
652	while (nreqs)	1135	while (nreqs)
653	{	1136	{
654	poll_wait ();	1137	poll_wait ();
…		…
694	CODE:	1177	CODE:
695	RETVAL = nreqs;	1178	RETVAL = nreqs;
696	OUTPUT:	1179	OUTPUT:
697	RETVAL	1180	RETVAL
698		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 1.19 by root, Sun Jul 31 19:04:45 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 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC