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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
4		7
5	#include "autoconf/config.h"	8	#include "autoconf/config.h"
6		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
7	#include <sys/types.h>	14	#include <sys/types.h>
8	#include <sys/stat.h>	15	#include <sys/stat.h>
9		16	#include <limits.h>
10	#include <unistd.h>	17	#include <unistd.h>
11	#include <fcntl.h>	18	#include <fcntl.h>
12	#include <signal.h>	19	#include <signal.h>
13	#include <sched.h>	20	#include <sched.h>
14		21
15	#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
16		36
17	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	37	/* used for struct dirent, AIX doesn't provide it */
18	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	#ifndef NAME_MAX
19	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	39	# define NAME_MAX 4096
		40	#endif
20		41
21	#if __ia64	42	#if __ia64
22	# define STACKSIZE 65536	43	# define STACKSIZE 65536
23	#else	44	#else
24	# define STACKSIZE 4096	45	# define STACKSIZE 8192
25	#endif	46	#endif
26		47
27	enum {	48	enum {
28	REQ_QUIT,	49	REQ_QUIT,
29	REQ_OPEN, REQ_CLOSE,	50	REQ_OPEN, REQ_CLOSE,
30	REQ_READ, REQ_WRITE, REQ_READAHEAD,	51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		52	REQ_SENDFILE,
31	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32	REQ_FSYNC, REQ_FDATASYNC,	54	REQ_FSYNC, REQ_FDATASYNC,
		55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		56	REQ_READDIR,
		57	REQ_LINK, REQ_SYMLINK,
33	};	58	};
34		59
35	typedef struct aio_cb {	60	typedef struct aio_cb {
36	struct aio_cb *volatile next;	61	struct aio_cb *volatile next;
37		62
38	int type;	63	int type;
39		64
		65	/* should receive a cleanup, with unions */
40	int fd;	66	int fd, fd2;
41	off_t offset;	67	off_t offset;
42	size_t length;	68	size_t length;
43	ssize_t result;	69	ssize_t result;
44	mode_t mode; /* open */	70	mode_t mode; /* open */
45	int errorno;	71	int errorno;
46	SV data, callback, *fh;	72	SV data, callback;
47	void *dataptr;	73	SV fh, fh2;
		74	void dataptr, data2ptr;
48	STRLEN dataoffset;	75	STRLEN dataoffset;
49		76
50	Stat_t *statdata;	77	Stat_t *statdata;
51	} aio_cb;	78	} aio_cb;
52		79
53	typedef aio_cb *aio_req;	80	typedef aio_cb *aio_req;
54		81
55	static int started;	82	static int started, wanted;
56	static volatile int nreqs;	83	static volatile int nreqs;
57	static int max_outstanding = 1<<30;	84	static int max_outstanding = 1<<30;
58	static int respipe [2];	85	static int respipe [2];
59		86
60	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63		90
64	static volatile aio_req reqs, reqe; /* queue start, queue end */	91	static volatile aio_req reqs, reqe; /* queue start, queue end */
65	static volatile aio_req ress, rese; /* queue start, queue end */	92	static volatile aio_req ress, rese; /* queue start, queue end */
66		93
		94	static void free_req (aio_req req)
		95	{
		96	if (req->data)
		97	SvREFCNT_dec (req->data);
		98
		99	if (req->fh)
		100	SvREFCNT_dec (req->fh);
		101
		102	if (req->fh2)
		103	SvREFCNT_dec (req->fh2);
		104
		105	if (req->statdata)
		106	Safefree (req->statdata);
		107
		108	if (req->callback)
		109	SvREFCNT_dec (req->callback);
		110
		111	if (req->type == REQ_READDIR && req->result >= 0)
		112	free (req->data2ptr);
		113
		114	Safefree (req);
		115	}
		116
67	static void	117	static void
68	poll_wait ()	118	poll_wait ()
69	{	119	{
70	if (nreqs && !ress)	120	if (nreqs && !ress)
71	{	121	{
…		…
80	static int	130	static int
81	poll_cb ()	131	poll_cb ()
82	{	132	{
83	dSP;	133	dSP;
84	int count = 0;	134	int count = 0;
		135	int do_croak = 0;
85	aio_req req, prv;	136	aio_req req;
86		137
		138	for (;;)
		139	{
87	pthread_mutex_lock (&reslock);	140	pthread_mutex_lock (&reslock);
		141	req = ress;
88		142
89	{	143	if (req)
		144	{
		145	ress = req->next;
		146
		147	if (!ress)
		148	{
90	/* read any signals sent by the worker threads */	149	/* read any signals sent by the worker threads */
91	char buf [32];	150	char buf [32];
92	while (read (respipe [0], buf, 32) > 0)	151	while (read (respipe [0], buf, 32) == 32)
		152	;
		153
		154	rese = 0;
		155	}
93	;	156	}
94	}
95		157
96	req = ress;
97	ress = rese = 0;
98
99	pthread_mutex_unlock (&reslock);	158	pthread_mutex_unlock (&reslock);
100		159
101	while (req)	160	if (!req)
102	{	161	break;
		162
103	nreqs--;	163	nreqs--;
104		164
105	if (req->type == REQ_QUIT)	165	if (req->type == REQ_QUIT)
106	started--;	166	started--;
107	else	167	else
108	{	168	{
109	int errorno = errno;	169	int errorno = errno;
110	errno = req->errorno;	170	errno = req->errorno;
111		171
112	if (req->type == REQ_READ)	172	if (req->type == REQ_READ)
113	SvCUR_set (req->data, req->dataoffset	173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
114	+ req->result > 0 ? req->result : 0);
115		174
		175	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		176	SvREADONLY_off (req->data);
		177
116	if (req->data)	178	if (req->statdata)
117	SvREFCNT_dec (req->data);
118
119	if (req->fh)
120	SvREFCNT_dec (req->fh);
121
122	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
123	{	179	{
124	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125	PL_laststatval = req->result;	181	PL_laststatval = req->result;
126	PL_statcache = *(req->statdata);	182	PL_statcache = *(req->statdata);
127
128	Safefree (req->statdata);
129	}	183	}
130		184
131	ENTER;	185	ENTER;
132	PUSHMARK (SP);	186	PUSHMARK (SP);
133	XPUSHs (sv_2mortal (newSViv (req->result)));
134		187
135	if (req->type == REQ_OPEN)	188	if (req->type == REQ_READDIR)
136	{	189	{
		190	SV *rv = &PL_sv_undef;
		191
		192	if (req->result >= 0)
		193	{
		194	char *buf = req->data2ptr;
		195	AV *av = newAV ();
		196
		197	while (req->result)
		198	{
		199	SV *sv = newSVpv (buf, 0);
		200
		201	av_push (av, sv);
		202	buf += SvCUR (sv) + 1;
		203	req->result--;
		204	}
		205
		206	rv = sv_2mortal (newRV_noinc ((SV *)av));
		207	}
		208
		209	XPUSHs (rv);
		210	}
		211	else
		212	{
		213	XPUSHs (sv_2mortal (newSViv (req->result)));
		214
		215	if (req->type == REQ_OPEN)
		216	{
137	/* convert fd to fh */	217	/* convert fd to fh */
138	SV *fh;	218	SV *fh;
139		219
140	PUTBACK;	220	PUTBACK;
141	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	221	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
142	SPAGAIN;	222	SPAGAIN;
143		223
144	fh = SvREFCNT_inc (POPs);	224	fh = SvREFCNT_inc (POPs);
145		225
146	PUSHMARK (SP);	226	PUSHMARK (SP);
147	XPUSHs (sv_2mortal (fh));	227	XPUSHs (sv_2mortal (fh));
		228	}
148	}	229	}
149		230
150	if (SvOK (req->callback))	231	if (SvOK (req->callback))
151	{	232	{
152	PUTBACK;	233	PUTBACK;
153	call_sv (req->callback, G_VOID \| G_EVAL);	234	call_sv (req->callback, G_VOID \| G_EVAL);
154	SPAGAIN;	235	SPAGAIN;
		236
		237	if (SvTRUE (ERRSV))
		238	{
		239	free_req (req);
		240	croak (0);
		241	}
155	}	242	}
156		243
157	LEAVE;	244	LEAVE;
158
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161		245
162	errno = errorno;	246	errno = errorno;
163	count++;	247	count++;
164	}	248	}
165		249
166	prv = req;	250	free_req (req);
167	req = req->next;
168	Safefree (prv);
169
170	/* TODO: croak on errors? */
171	}	251	}
172		252
173	return count;	253	return count;
174	}	254	}
175		255
…		…
196	}	276	}
197		277
198	static void	278	static void
199	send_req (aio_req req)	279	send_req (aio_req req)
200	{	280	{
		281	while (started < wanted && nreqs >= started)
		282	start_thread ();
		283
201	nreqs++;	284	nreqs++;
202		285
203	pthread_mutex_lock (&reqlock);	286	pthread_mutex_lock (&reqlock);
204		287
205	req->next = 0;	288	req->next = 0;
…		…
213	reqe = reqs = req;	296	reqe = reqs = req;
214		297
215	pthread_cond_signal (&reqwait);	298	pthread_cond_signal (&reqwait);
216	pthread_mutex_unlock (&reqlock);	299	pthread_mutex_unlock (&reqlock);
217		300
218	while (nreqs > max_outstanding)	301	if (nreqs > max_outstanding)
		302	for (;;)
		303	{
		304	poll_cb ();
		305
		306	if (nreqs <= max_outstanding)
		307	break;
		308
		309	poll_wait ();
		310	}
		311	}
		312
		313	static void
		314	end_thread (void)
		315	{
		316	aio_req req;
		317	Newz (0, req, 1, aio_cb);
		318	req->type = REQ_QUIT;
		319
		320	send_req (req);
		321	}
		322
		323	static void min_parallel (int nthreads)
		324	{
		325	if (wanted < nthreads)
		326	wanted = nthreads;
		327	}
		328
		329	static void max_parallel (int nthreads)
		330	{
		331	int cur = started;
		332
		333	if (wanted > nthreads)
		334	wanted = nthreads;
		335
		336	while (cur > wanted)
		337	{
		338	end_thread ();
		339	cur--;
		340	}
		341
		342	while (started > wanted)
219	{	343	{
220	poll_wait ();	344	poll_wait ();
221	poll_cb ();	345	poll_cb ();
222	}	346	}
223	}	347	}
224		348
		349	static void create_pipe ()
		350	{
		351	if (pipe (respipe))
		352	croak ("unable to initialize result pipe");
		353
		354	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		355	croak ("cannot set result pipe to nonblocking mode");
		356
		357	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		358	croak ("cannot set result pipe to nonblocking mode");
		359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&preadwritelock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&preadwritelock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&preadwritelock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&preadwritelock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static ssize_t
		416	readahead (int fd, off_t offset, size_t count)
		417	{
		418	char readahead_buf[4096];
		419
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	#if !HAVE_READDIR_R
		434	# define readdir_r aio_readdir_r
		435
		436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		437
225	static void	438	static int
226	end_thread (void)	439	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
227	{	440	{
228	aio_req req;	441	struct dirent *e;
229	New (0, req, 1, aio_cb);	442	int errorno;
230	req->type = REQ_QUIT;
231		443
232	send_req (req);	444	pthread_mutex_lock (&readdirlock);
		445
		446	e = readdir (dirp);
		447	errorno = errno;
		448
		449	if (e)
		450	{
		451	*res = ent;
		452	strcpy (ent->d_name, e->d_name);
		453	}
		454	else
		455	*res = 0;
		456
		457	pthread_mutex_unlock (&readdirlock);
		458
		459	errno = errorno;
		460	return e ? 0 : -1;
233	}	461	}
		462	#endif
		463
		464	/* sendfile always needs emulation */
		465	static ssize_t
		466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		467	{
		468	ssize_t res;
		469
		470	if (!count)
		471	return 0;
		472
		473	#if HAVE_SENDFILE
		474	# if __linux
		475	res = sendfile (ofd, ifd, &offset, count);
		476
		477	# elif __freebsd
		478	/*
		479	* Of course, the freebsd sendfile is a dire hack with no thoughts
		480	* wasted on making it similar to other I/O functions.
		481	*/
		482	{
		483	off_t sbytes;
		484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		485
		486	if (res < 0 && sbytes)
		487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		488	res = sbytes;
		489	}
		490
		491	# elif __hpux
		492	res = sendfile (ofd, ifd, offset, count, 0, 0);
		493
		494	# elif __solaris
		495	{
		496	struct sendfilevec vec;
		497	size_t sbytes;
		498
		499	vec.sfv_fd = ifd;
		500	vec.sfv_flag = 0;
		501	vec.sfv_off = offset;
		502	vec.sfv_len = count;
		503
		504	res = sendfilev (ofd, &vec, 1, &sbytes);
		505
		506	if (res < 0 && sbytes)
		507	res = sbytes;
		508	}
		509
		510	# endif
		511	#else
		512	res = -1;
		513	errno = ENOSYS;
		514	#endif
		515
		516	if (res < 0
		517	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		518	#if __solaris
		519	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		520	#endif
		521	)
		522	)
		523	{
		524	/* emulate sendfile. this is a major pain in the ass */
		525	char buf[4096];
		526	res = 0;
		527
		528	while (count)
		529	{
		530	ssize_t cnt;
		531
		532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		533
		534	if (cnt <= 0)
		535	{
		536	if (cnt && !res) res = -1;
		537	break;
		538	}
		539
		540	cnt = write (ofd, buf, cnt);
		541
		542	if (cnt <= 0)
		543	{
		544	if (cnt && !res) res = -1;
		545	break;
		546	}
		547
		548	offset += cnt;
		549	res += cnt;
		550	count -= cnt;
		551	}
		552	}
		553
		554	return res;
		555	}
		556
		557	/* read a full directory */
		558	static int
		559	scandir_ (const char path, void *namesp)
		560	{
		561	DIR *dirp = opendir (path);
		562	union
		563	{
		564	struct dirent d;
		565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		566	} u;
		567	struct dirent *entp;
		568	char name, names;
		569	int memlen = 4096;
		570	int memofs = 0;
		571	int res = 0;
		572	int errorno;
		573
		574	if (!dirp)
		575	return -1;
		576
		577	names = malloc (memlen);
		578
		579	for (;;)
		580	{
		581	errno = 0, readdir_r (dirp, &u.d, &entp);
		582
		583	if (!entp)
		584	break;
		585
		586	name = entp->d_name;
		587
		588	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		589	{
		590	int len = strlen (name) + 1;
		591
		592	res++;
		593
		594	while (memofs + len > memlen)
		595	{
		596	memlen *= 2;
		597	names = realloc (names, memlen);
		598	if (!names)
		599	break;
		600	}
		601
		602	memcpy (names + memofs, name, len);
		603	memofs += len;
		604	}
		605	}
		606
		607	errorno = errno;
		608	closedir (dirp);
		609
		610	if (errorno)
		611	{
		612	free (names);
		613	errno = errorno;
		614	res = -1;
		615	}
		616
		617	namesp = (void )names;
		618	return res;
		619	}
		620
		621	/*****************************************************************************/
234		622
235	static void *	623	static void *
236	aio_proc (void *thr_arg)	624	aio_proc (void *thr_arg)
237	{	625	{
238	aio_req req;	626	aio_req req;
…		…
264		652
265	type = req->type;	653	type = req->type;
266		654
267	switch (type)	655	switch (type)
268	{	656	{
269	#if HAVE_PREADWRITE
270	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272	#else
273	# error "pread/pwrite cannot be emulated, fix your os"
274	#endif
275		659
276	#if HAVE_READAHEAD
277	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
278	#else	661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
279	// TODO: emulate
280	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
281	#endif
282		662
283	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
284	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
285	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
286		666
287	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
288	case REQ_CLOSE: req->result = close (req->fd); break;	668	case REQ_CLOSE: req->result = close (req->fd); break;
289	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
		673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
290		674
291	case REQ_FDATASYNC:	675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
292	#if HAVE_FDATASYNC
293	req->result = fdatasync (req->fd); break;
294	#endif
295	case REQ_FSYNC: req->result = fsync (req->fd); break;	676	case REQ_FSYNC: req->result = fsync (req->fd); break;
		677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
296		678
297	case REQ_QUIT:	679	case REQ_QUIT:
298	break;	680	break;
299		681
300	default:	682	default:
…		…
326	while (type != REQ_QUIT);	708	while (type != REQ_QUIT);
327		709
328	return 0;	710	return 0;
329	}	711	}
330		712
		713	/*****************************************************************************/
		714
		715	static void atfork_prepare (void)
		716	{
		717	pthread_mutex_lock (&reqlock);
		718	pthread_mutex_lock (&reslock);
		719	#if !HAVE_PREADWRITE
		720	pthread_mutex_lock (&preadwritelock);
		721	#endif
		722	#if !HAVE_READDIR_R
		723	pthread_mutex_lock (&readdirlock);
		724	#endif
		725	}
		726
		727	static void atfork_parent (void)
		728	{
		729	#if !HAVE_READDIR_R
		730	pthread_mutex_unlock (&readdirlock);
		731	#endif
		732	#if !HAVE_PREADWRITE
		733	pthread_mutex_unlock (&preadwritelock);
		734	#endif
		735	pthread_mutex_unlock (&reslock);
		736	pthread_mutex_unlock (&reqlock);
		737	}
		738
		739	static void atfork_child (void)
		740	{
		741	aio_req prv;
		742
		743	started = 0;
		744
		745	while (reqs)
		746	{
		747	prv = reqs;
		748	reqs = prv->next;
		749	free_req (prv);
		750	}
		751
		752	reqs = reqe = 0;
		753
		754	while (ress)
		755	{
		756	prv = ress;
		757	ress = prv->next;
		758	free_req (prv);
		759	}
		760
		761	ress = rese = 0;
		762
		763	close (respipe [0]);
		764	close (respipe [1]);
		765	create_pipe ();
		766
		767	atfork_parent ();
		768	}
		769
		770	#define dREQ \
		771	aio_req req; \
		772	\
		773	if (SvOK (callback) && !SvROK (callback)) \
		774	croak ("clalback must be undef or of reference type"); \
		775	\
		776	Newz (0, req, 1, aio_cb); \
		777	if (!req) \
		778	croak ("out of memory during aio_req allocation"); \
		779	\
		780	req->callback = newSVsv (callback);
		781
331	MODULE = IO::AIO PACKAGE = IO::AIO	782	MODULE = IO::AIO PACKAGE = IO::AIO
332		783
333	PROTOTYPES: ENABLE	784	PROTOTYPES: ENABLE
334		785
335	BOOT:	786	BOOT:
336	{	787	{
337	if (pipe (respipe))	788	HV *stash = gv_stashpv ("IO::AIO", 1);
338	croak ("unable to initialize result pipe");	789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
339		792
340	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	793	create_pipe ();
341	croak ("cannot set result pipe to nonblocking mode");	794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
342
343	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
344	croak ("cannot set result pipe to nonblocking mode");
345	}	795	}
346		796
347	void	797	void
348	min_parallel(nthreads)	798	min_parallel (nthreads)
349	int nthreads	799	int nthreads
350	PROTOTYPE: $	800	PROTOTYPE: $
351	CODE:
352	while (nthreads > started)
353	start_thread ();
354		801
355	void	802	void
356	max_parallel(nthreads)	803	max_parallel (nthreads)
357	int nthreads	804	int nthreads
358	PROTOTYPE: $	805	PROTOTYPE: $
359	CODE:
360	{
361	int cur = started;
362	while (cur > nthreads)
363	{
364	end_thread ();
365	cur--;
366	}
367
368	while (started > nthreads)
369	{
370	poll_wait ();
371	poll_cb ();
372	}
373	}
374		806
375	int	807	int
376	max_outstanding(nreqs)	808	max_outstanding (nreqs)
377	int nreqs	809	int nreqs
378	PROTOTYPE: $	810	PROTOTYPE: $
379	CODE:	811	CODE:
380	RETVAL = max_outstanding;	812	RETVAL = max_outstanding;
381	max_outstanding = nreqs;	813	max_outstanding = nreqs;
382		814
383	void	815	void
384	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
385	SV * pathname	817	SV * pathname
386	int flags	818	int flags
387	int mode	819	int mode
388	SV * callback	820	SV * callback
389	PROTOTYPE: $$$;$	821	PROTOTYPE: $$$;$
390	CODE:	822	CODE:
391	{	823	{
392	aio_req req;	824	dREQ;
393
394	Newz (0, req, 1, aio_cb);
395
396	if (!req)
397	croak ("out of memory during aio_req allocation");
398		825
399	req->type = REQ_OPEN;	826	req->type = REQ_OPEN;
400	req->data = newSVsv (pathname);	827	req->data = newSVsv (pathname);
401	req->dataptr = SvPV_nolen (req->data);	828	req->dataptr = SvPVbyte_nolen (req->data);
402	req->fd = flags;	829	req->fd = flags;
403	req->mode = mode;	830	req->mode = mode;
404	req->callback = SvREFCNT_inc (callback);
405		831
406	send_req (req);	832	send_req (req);
407	}	833	}
408		834
409	void	835	void
410	aio_close(fh,callback=&PL_sv_undef)	836	aio_close (fh,callback=&PL_sv_undef)
411	SV * fh	837	SV * fh
412	SV * callback	838	SV * callback
413	PROTOTYPE: $;$	839	PROTOTYPE: $;$
414	ALIAS:	840	ALIAS:
415	aio_close = REQ_CLOSE	841	aio_close = REQ_CLOSE
416	aio_fsync = REQ_FSYNC	842	aio_fsync = REQ_FSYNC
417	aio_fdatasync = REQ_FDATASYNC	843	aio_fdatasync = REQ_FDATASYNC
418	CODE:	844	CODE:
419	{	845	{
420	aio_req req;	846	dREQ;
421
422	Newz (0, req, 1, aio_cb);
423
424	if (!req)
425	croak ("out of memory during aio_req allocation");
426		847
427	req->type = ix;	848	req->type = ix;
428	req->fh = newSVsv (fh);	849	req->fh = newSVsv (fh);
429	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
430	req->callback = SvREFCNT_inc (callback);
431		851
432	send_req (req);	852	send_req (req);
433	}	853	}
434		854
435	void	855	void
436	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
437	SV * fh	857	SV * fh
438	UV offset	858	UV offset
439	IV length	859	UV length
440	SV * data	860	SV * data
441	IV dataoffset	861	UV dataoffset
442	SV * callback	862	SV * callback
443	ALIAS:	863	ALIAS:
444	aio_read = REQ_READ	864	aio_read = REQ_READ
445	aio_write = REQ_WRITE	865	aio_write = REQ_WRITE
446	PROTOTYPE: $$$$$;$	866	PROTOTYPE: $$$$$;$
447	CODE:	867	CODE:
448	{	868	{
449	aio_req req;	869	aio_req req;
450	STRLEN svlen;	870	STRLEN svlen;
451	char *svptr = SvPV (data, svlen);	871	char *svptr = SvPVbyte (data, svlen);
452		872
453	SvUPGRADE (data, SVt_PV);	873	SvUPGRADE (data, SVt_PV);
454	SvPOK_on (data);	874	SvPOK_on (data);
455		875
456	if (dataoffset < 0)	876	if (dataoffset < 0)
…		…
472	}	892	}
473		893
474	if (length < 0)	894	if (length < 0)
475	croak ("length must not be negative");	895	croak ("length must not be negative");
476		896
477	Newz (0, req, 1, aio_cb);	897	{
		898	dREQ;
478		899
479	if (!req)
480	croak ("out of memory during aio_req allocation");
481
482	req->type = ix;	900	req->type = ix;
483	req->fh = newSVsv (fh);	901	req->fh = newSVsv (fh);
484	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
485	: IoOFP (sv_2io (fh)));	903	: IoOFP (sv_2io (fh)));
486	req->offset = offset;	904	req->offset = offset;
		905	req->length = length;
		906	req->data = SvREFCNT_inc (data);
		907	req->dataptr = (char *)svptr + dataoffset;
		908
		909	if (!SvREADONLY (data))
		910	{
		911	SvREADONLY_on (data);
		912	req->data2ptr = (void *)data;
		913	}
		914
		915	send_req (req);
		916	}
		917	}
		918
		919	void
		920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		921	SV * out_fh
		922	SV * in_fh
		923	UV in_offset
		924	UV length
		925	SV * callback
		926	PROTOTYPE: $$$$;$
		927	CODE:
		928	{
		929	dREQ;
		930
		931	req->type = REQ_SENDFILE;
		932	req->fh = newSVsv (out_fh);
		933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		934	req->fh2 = newSVsv (in_fh);
		935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		936	req->offset = in_offset;
487	req->length = length;	937	req->length = length;
488	req->data = SvREFCNT_inc (data);
489	req->dataptr = (char *)svptr + dataoffset;
490	req->callback = SvREFCNT_inc (callback);
491		938
492	send_req (req);	939	send_req (req);
493	}	940	}
494		941
495	void	942	void
496	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
497	SV * fh	944	SV * fh
498	UV offset	945	UV offset
499	IV length	946	IV length
500	SV * callback	947	SV * callback
501	PROTOTYPE: $$$;$	948	PROTOTYPE: $$$;$
502	CODE:	949	CODE:
503	{	950	{
504	aio_req req;	951	dREQ;
505
506	if (length < 0)
507	croak ("length must not be negative");
508
509	Newz (0, req, 1, aio_cb);
510
511	if (!req)
512	croak ("out of memory during aio_req allocation");
513		952
514	req->type = REQ_READAHEAD;	953	req->type = REQ_READAHEAD;
515	req->fh = newSVsv (fh);	954	req->fh = newSVsv (fh);
516	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
517	req->offset = offset;	956	req->offset = offset;
518	req->length = length;	957	req->length = length;
519	req->callback = SvREFCNT_inc (callback);
520		958
521	send_req (req);	959	send_req (req);
522	}	960	}
523		961
524	void	962	void
525	aio_stat(fh_or_path,callback=&PL_sv_undef)	963	aio_stat (fh_or_path,callback=&PL_sv_undef)
526	SV * fh_or_path	964	SV * fh_or_path
527	SV * callback	965	SV * callback
528	ALIAS:	966	ALIAS:
529	aio_stat = REQ_STAT	967	aio_stat = REQ_STAT
530	aio_lstat = REQ_LSTAT	968	aio_lstat = REQ_LSTAT
531	CODE:	969	CODE:
532	{	970	{
533	aio_req req;	971	dREQ;
534
535	Newz (0, req, 1, aio_cb);
536
537	if (!req)
538	croak ("out of memory during aio_req allocation");
539		972
540	New (0, req->statdata, 1, Stat_t);	973	New (0, req->statdata, 1, Stat_t);
541
542	if (!req->statdata)	974	if (!req->statdata)
		975	{
		976	free_req (req);
543	croak ("out of memory during aio_req->statdata allocation");	977	croak ("out of memory during aio_req->statdata allocation");
		978	}
544		979
545	if (SvPOK (fh_or_path))	980	if (SvPOK (fh_or_path))
546	{	981	{
547	req->type = ix;	982	req->type = ix;
548	req->data = newSVsv (fh_or_path);	983	req->data = newSVsv (fh_or_path);
549	req->dataptr = SvPV_nolen (req->data);	984	req->dataptr = SvPVbyte_nolen (req->data);
550	}	985	}
551	else	986	else
552	{	987	{
553	req->type = REQ_FSTAT;	988	req->type = REQ_FSTAT;
554	req->fh = newSVsv (fh_or_path);	989	req->fh = newSVsv (fh_or_path);
555	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
556	}	991	}
557		992
558	req->callback = SvREFCNT_inc (callback);
559
560	send_req (req);	993	send_req (req);
561	}	994	}
562		995
563	void	996	void
564	aio_unlink(pathname,callback=&PL_sv_undef)	997	aio_unlink (pathname,callback=&PL_sv_undef)
565	SV * pathname	998	SV * pathname
566	SV * callback	999	SV * callback
		1000	ALIAS:
		1001	aio_unlink = REQ_UNLINK
		1002	aio_rmdir = REQ_RMDIR
		1003	aio_readdir = REQ_READDIR
567	CODE:	1004	CODE:
568	{	1005	{
569	aio_req req;	1006	dREQ;
570		1007
571	Newz (0, req, 1, aio_cb);	1008	req->type = ix;
572
573	if (!req)
574	croak ("out of memory during aio_req allocation");
575
576	req->type = REQ_UNLINK;
577	req->data = newSVsv (pathname);	1009	req->data = newSVsv (pathname);
578	req->dataptr = SvPV_nolen (req->data);	1010	req->dataptr = SvPVbyte_nolen (req->data);
579	req->callback = SvREFCNT_inc (callback);
580		1011
581	send_req (req);	1012	send_req (req);
582	}	1013	}
583		1014
584	void	1015	void
		1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1017	SV * oldpath
		1018	SV * newpath
		1019	SV * callback
		1020	ALIAS:
		1021	aio_link = REQ_LINK
		1022	aio_symlink = REQ_SYMLINK
		1023	aio_rename = REQ_RENAME
		1024	CODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = ix;
		1029	req->fh = newSVsv (oldpath);
		1030	req->data2ptr = SvPVbyte_nolen (req->fh);
		1031	req->data = newSVsv (newpath);
		1032	req->dataptr = SvPVbyte_nolen (req->data);
		1033
		1034	send_req (req);
		1035	}
		1036
		1037	void
585	flush()	1038	flush ()
586	PROTOTYPE:	1039	PROTOTYPE:
587	CODE:	1040	CODE:
588	while (nreqs)	1041	while (nreqs)
589	{	1042	{
590	poll_wait ();	1043	poll_wait ();

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs. Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC