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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC vs.
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 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>
7	#include <sys/types.h>	13	#include <sys/types.h>
8	#include <sys/stat.h>	14	#include <sys/stat.h>
9		15	#include <limits.h>
10	#include <unistd.h>	16	#include <unistd.h>
11	#include <fcntl.h>	17	#include <fcntl.h>
12	#include <signal.h>	18	#include <signal.h>
13	#include <sched.h>	19	#include <sched.h>
14		20
15	#include <pthread.h>	21	#if HAVE_SENDFILE
16		22	# if __linux
17	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	23	# include <sys/sendfile.h>
18	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	24	# elif __freebsd
19	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	25	# include <sys/socket.h>
		26	# include <sys/uio.h>
		27	# elif __hpux
		28	# include <sys/socket.h>
		29	# elif __solaris /* not yet */
		30	# include <sys/sendfile.h>
		31	# else
		32	# error sendfile support requested but not available
		33	# endif
		34	#endif
20		35
21	#if __ia64	36	#if __ia64
22	# define STACKSIZE 65536	37	# define STACKSIZE 65536
23	#else	38	#else
24	# define STACKSIZE 4096	39	# define STACKSIZE 8192
25	#endif	40	#endif
26		41
27	enum {	42	enum {
28	REQ_QUIT,	43	REQ_QUIT,
29	REQ_OPEN, REQ_CLOSE,	44	REQ_OPEN, REQ_CLOSE,
30	REQ_READ, REQ_WRITE, REQ_READAHEAD,	45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		46	REQ_SENDFILE,
31	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32	REQ_FSYNC, REQ_FDATASYNC,	48	REQ_FSYNC, REQ_FDATASYNC,
		49	REQ_UNLINK, REQ_RMDIR,
		50	REQ_READDIR,
		51	REQ_SYMLINK,
33	};	52	};
34		53
35	typedef struct aio_cb {	54	typedef struct aio_cb {
36	struct aio_cb *volatile next;	55	struct aio_cb *volatile next;
37		56
38	int type;	57	int type;
39		58
		59	/* should receive a cleanup, with unions */
40	int fd;	60	int fd, fd2;
41	off_t offset;	61	off_t offset;
42	size_t length;	62	size_t length;
43	ssize_t result;	63	ssize_t result;
44	mode_t mode; /* open */	64	mode_t mode; /* open */
45	int errorno;	65	int errorno;
46	SV data, callback, *fh;	66	SV data, callback;
47	void *dataptr;	67	SV fh, fh2;
		68	void dataptr, data2ptr;
48	STRLEN dataoffset;	69	STRLEN dataoffset;
49		70
50	Stat_t *statdata;	71	Stat_t *statdata;
51	} aio_cb;	72	} aio_cb;
52		73
53	typedef aio_cb *aio_req;	74	typedef aio_cb *aio_req;
54		75
55	static int started;	76	static int started, wanted;
56	static volatile int nreqs;	77	static volatile int nreqs;
57	static int max_outstanding = 1<<30;	78	static int max_outstanding = 1<<30;
58	static int respipe [2];	79	static int respipe [2];
59		80
60	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63		84
64	static volatile aio_req reqs, reqe; /* queue start, queue end */	85	static volatile aio_req reqs, reqe; /* queue start, queue end */
65	static volatile aio_req ress, rese; /* queue start, queue end */	86	static volatile aio_req ress, rese; /* queue start, queue end */
66		87
		88	static void free_req (aio_req req)
		89	{
		90	if (req->data)
		91	SvREFCNT_dec (req->data);
		92
		93	if (req->fh)
		94	SvREFCNT_dec (req->fh);
		95
		96	if (req->fh2)
		97	SvREFCNT_dec (req->fh2);
		98
		99	if (req->statdata)
		100	Safefree (req->statdata);
		101
		102	if (req->callback)
		103	SvREFCNT_dec (req->callback);
		104
		105	if (req->type == REQ_READDIR && req->result >= 0)
		106	free (req->data2ptr);
		107
		108	Safefree (req);
		109	}
		110
67	static void	111	static void
68	poll_wait ()	112	poll_wait ()
69	{	113	{
70	if (nreqs && !ress)	114	if (nreqs && !ress)
71	{	115	{
…		…
80	static int	124	static int
81	poll_cb ()	125	poll_cb ()
82	{	126	{
83	dSP;	127	dSP;
84	int count = 0;	128	int count = 0;
		129	int do_croak = 0;
85	aio_req req, prv;	130	aio_req req;
86		131
		132	for (;;)
		133	{
87	pthread_mutex_lock (&reslock);	134	pthread_mutex_lock (&reslock);
		135	req = ress;
88		136
89	{	137	if (req)
		138	{
		139	ress = req->next;
		140
		141	if (!ress)
		142	{
90	/* read any signals sent by the worker threads */	143	/* read any signals sent by the worker threads */
91	char buf [32];	144	char buf [32];
92	while (read (respipe [0], buf, 32) > 0)	145	while (read (respipe [0], buf, 32) == 32)
		146	;
		147
		148	rese = 0;
		149	}
93	;	150	}
94	}
95		151
96	req = ress;
97	ress = rese = 0;
98
99	pthread_mutex_unlock (&reslock);	152	pthread_mutex_unlock (&reslock);
100		153
101	while (req)	154	if (!req)
102	{	155	break;
		156
103	nreqs--;	157	nreqs--;
104		158
105	if (req->type == REQ_QUIT)	159	if (req->type == REQ_QUIT)
106	started--;	160	started--;
107	else	161	else
108	{	162	{
109	int errorno = errno;	163	int errorno = errno;
110	errno = req->errorno;	164	errno = req->errorno;
111		165
112	if (req->type == REQ_READ)	166	if (req->type == REQ_READ)
113	SvCUR_set (req->data, req->dataoffset	167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
114	+ req->result > 0 ? req->result : 0);
115		168
		169	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		170	SvREADONLY_off (req->data);
		171
116	if (req->data)	172	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	{	173	{
124	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125	PL_laststatval = req->result;	175	PL_laststatval = req->result;
126	PL_statcache = *(req->statdata);	176	PL_statcache = *(req->statdata);
127
128	Safefree (req->statdata);
129	}	177	}
130		178
131	ENTER;	179	ENTER;
132	PUSHMARK (SP);	180	PUSHMARK (SP);
133	XPUSHs (sv_2mortal (newSViv (req->result)));
134		181
135	if (req->type == REQ_OPEN)	182	if (req->type == REQ_READDIR)
136	{	183	{
		184	SV *rv = &PL_sv_undef;
		185
		186	if (req->result >= 0)
		187	{
		188	char *buf = req->data2ptr;
		189	AV *av = newAV ();
		190
		191	while (req->result)
		192	{
		193	SV *sv = newSVpv (buf, 0);
		194
		195	av_push (av, sv);
		196	buf += SvCUR (sv) + 1;
		197	req->result--;
		198	}
		199
		200	rv = sv_2mortal (newRV_noinc ((SV *)av));
		201	}
		202
		203	XPUSHs (rv);
		204	}
		205	else
		206	{
		207	XPUSHs (sv_2mortal (newSViv (req->result)));
		208
		209	if (req->type == REQ_OPEN)
		210	{
137	/* convert fd to fh */	211	/* convert fd to fh */
138	SV *fh;	212	SV *fh;
139		213
140	PUTBACK;	214	PUTBACK;
141	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	215	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
142	SPAGAIN;	216	SPAGAIN;
143		217
144	fh = SvREFCNT_inc (POPs);	218	fh = SvREFCNT_inc (POPs);
145		219
146	PUSHMARK (SP);	220	PUSHMARK (SP);
147	XPUSHs (sv_2mortal (fh));	221	XPUSHs (sv_2mortal (fh));
		222	}
148	}	223	}
149		224
150	if (SvOK (req->callback))	225	if (SvOK (req->callback))
151	{	226	{
152	PUTBACK;	227	PUTBACK;
153	call_sv (req->callback, G_VOID \| G_EVAL);	228	call_sv (req->callback, G_VOID \| G_EVAL);
154	SPAGAIN;	229	SPAGAIN;
		230
		231	if (SvTRUE (ERRSV))
		232	{
		233	free_req (req);
		234	croak (0);
		235	}
155	}	236	}
156		237
157	LEAVE;	238	LEAVE;
158
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161		239
162	errno = errorno;	240	errno = errorno;
163	count++;	241	count++;
164	}	242	}
165		243
166	prv = req;	244	free_req (req);
167	req = req->next;
168	Safefree (prv);
169
170	/* TODO: croak on errors? */
171	}	245	}
172		246
173	return count;	247	return count;
174	}	248	}
175		249
…		…
196	}	270	}
197		271
198	static void	272	static void
199	send_req (aio_req req)	273	send_req (aio_req req)
200	{	274	{
		275	while (started < wanted && nreqs >= started)
		276	start_thread ();
		277
201	nreqs++;	278	nreqs++;
202		279
203	pthread_mutex_lock (&reqlock);	280	pthread_mutex_lock (&reqlock);
204		281
205	req->next = 0;	282	req->next = 0;
…		…
213	reqe = reqs = req;	290	reqe = reqs = req;
214		291
215	pthread_cond_signal (&reqwait);	292	pthread_cond_signal (&reqwait);
216	pthread_mutex_unlock (&reqlock);	293	pthread_mutex_unlock (&reqlock);
217		294
218	while (nreqs > max_outstanding)	295	if (nreqs > max_outstanding)
		296	for (;;)
		297	{
		298	poll_cb ();
		299
		300	if (nreqs <= max_outstanding)
		301	break;
		302
		303	poll_wait ();
		304	}
		305	}
		306
		307	static void
		308	end_thread (void)
		309	{
		310	aio_req req;
		311	Newz (0, req, 1, aio_cb);
		312	req->type = REQ_QUIT;
		313
		314	send_req (req);
		315	}
		316
		317	static void min_parallel (int nthreads)
		318	{
		319	if (wanted < nthreads)
		320	wanted = nthreads;
		321	}
		322
		323	static void max_parallel (int nthreads)
		324	{
		325	int cur = started;
		326
		327	if (wanted > nthreads)
		328	wanted = nthreads;
		329
		330	while (cur > wanted)
		331	{
		332	end_thread ();
		333	cur--;
		334	}
		335
		336	while (started > wanted)
219	{	337	{
220	poll_wait ();	338	poll_wait ();
221	poll_cb ();	339	poll_cb ();
222	}	340	}
223	}	341	}
224		342
225	static void	343	static void create_pipe ()
226	end_thread (void)
227	{	344	{
228	aio_req req;	345	if (pipe (respipe))
229	New (0, req, 1, aio_cb);	346	croak ("unable to initialize result pipe");
230	req->type = REQ_QUIT;
231		347
232	send_req (req);	348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
233	}	349	croak ("cannot set result pipe to nonblocking mode");
234		350
		351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		352	croak ("cannot set result pipe to nonblocking mode");
		353	}
		354
		355	/*****************************************************************************/
235	/* work around various missing functions */	356	/* work around various missing functions */
236		357
237	#if !HAVE_PREADWRITE	358	#if !HAVE_PREADWRITE
238	# define pread aio_pread	359	# define pread aio_pread
239	# define pwrite aio_pwrite	360	# define pwrite aio_pwrite
…		…
241	/*	362	/*
242	* make our pread/pwrite safe against themselves, but not against	363	* make our pread/pwrite safe against themselves, but not against
243	* normal read/write by using a mutex. slows down execution a lot,	364	* normal read/write by using a mutex. slows down execution a lot,
244	* but that's your problem, not mine.	365	* but that's your problem, not mine.
245	*/	366	*/
246	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
247		368
248	static ssize_t	369	static ssize_t
249	pread (int fd, void *buf, size_t count, off_t offset)	370	pread (int fd, void *buf, size_t count, off_t offset)
250	{	371	{
251	ssize_t res;	372	ssize_t res;
252	off_t ooffset;	373	off_t ooffset;
253		374
254	pthread_mutex_lock (&iolock);	375	pthread_mutex_lock (&preadwritelock);
255	ooffset = lseek (fd, 0, SEEK_CUR);	376	ooffset = lseek (fd, 0, SEEK_CUR);
256	lseek (fd, offset, SEEK_SET);	377	lseek (fd, offset, SEEK_SET);
257	res = read (fd, buf, count);	378	res = read (fd, buf, count);
258	lseek (fd, ooffset, SEEK_SET);	379	lseek (fd, ooffset, SEEK_SET);
259	pthread_mutex_unlock (&iolock);	380	pthread_mutex_unlock (&preadwritelock);
260		381
261	return res;	382	return res;
262	}	383	}
263		384
264	static ssize_t	385	static ssize_t
265	pwrite (int fd, void *buf, size_t count, off_t offset)	386	pwrite (int fd, void *buf, size_t count, off_t offset)
266	{	387	{
267	ssize_t res;	388	ssize_t res;
268	off_t ooffset;	389	off_t ooffset;
269		390
270	pthread_mutex_lock (&iolock);	391	pthread_mutex_lock (&preadwritelock);
271	ooffset = lseek (fd, 0, SEEK_CUR);	392	ooffset = lseek (fd, 0, SEEK_CUR);
272	lseek (fd, offset, SEEK_SET);	393	lseek (fd, offset, SEEK_SET);
273	res = write (fd, buf, count);	394	res = write (fd, buf, count);
274	lseek (fd, offset, SEEK_SET);	395	lseek (fd, offset, SEEK_SET);
275	pthread_mutex_unlock (&iolock);	396	pthread_mutex_unlock (&preadwritelock);
276		397
277	return res;	398	return res;
278	}	399	}
279	#endif	400	#endif
280		401
…		…
283	#endif	404	#endif
284		405
285	#if !HAVE_READAHEAD	406	#if !HAVE_READAHEAD
286	# define readahead aio_readahead	407	# define readahead aio_readahead
287		408
288	static char readahead_buf[4096];
289
290	static ssize_t	409	static ssize_t
291	readahead (int fd, off_t offset, size_t count)	410	readahead (int fd, off_t offset, size_t count)
292	{	411	{
		412	char readahead_buf[4096];
		413
293	while (count > 0)	414	while (count > 0)
294	{	415	{
295	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
296		417
297	pread (fd, readahead_buf, len, offset);	418	pread (fd, readahead_buf, len, offset);
…		…
300	}	421	}
301		422
302	errno = 0;	423	errno = 0;
303	}	424	}
304	#endif	425	#endif
		426
		427	#if !HAVE_READDIR_R
		428	# define readdir_r aio_readdir_r
		429
		430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		431
		432	static int
		433	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		434	{
		435	struct dirent *e;
		436	int errorno;
		437
		438	pthread_mutex_lock (&readdirlock);
		439
		440	e = readdir (dirp);
		441	errorno = errno;
		442
		443	if (e)
		444	{
		445	*res = ent;
		446	strcpy (ent->d_name, e->d_name);
		447	}
		448	else
		449	*res = 0;
		450
		451	pthread_mutex_unlock (&readdirlock);
		452
		453	errno = errorno;
		454	return e ? 0 : -1;
		455	}
		456	#endif
		457
		458	/* sendfile always needs emulation */
		459	static ssize_t
		460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		461	{
		462	ssize_t res;
		463
		464	if (!count)
		465	return 0;
		466
		467	#if HAVE_SENDFILE
		468	# if __linux
		469	res = sendfile (ofd, ifd, &offset, count);
		470
		471	# elif __freebsd
		472	/*
		473	* Of course, the freebsd sendfile is a dire hack with no thoughts
		474	* wasted on making it similar to other I/O functions.
		475	*/
		476	{
		477	off_t sbytes;
		478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		479
		480	if (res < 0 && sbytes)
		481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		482	res = sbytes;
		483	}
		484
		485	# elif __hpux
		486	res = sendfile (ofd, ifd, offset, count, 0, 0);
		487
		488	# elif __solaris
		489	{
		490	struct sendfilevec vec;
		491	size_t sbytes;
		492
		493	vec.sfv_fd = ifd;
		494	vec.sfv_flag = 0;
		495	vec.sfv_off = offset;
		496	vec.sfv_len = count;
		497
		498	res = sendfilev (ofd, &vec, 1, &sbytes);
		499
		500	if (res < 0 && sbytes)
		501	res = sbytes;
		502	}
		503
		504	# endif
		505	#else
		506	res = -1;
		507	errno = ENOSYS;
		508	#endif
		509
		510	if (res < 0
		511	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		512	#if __solaris
		513	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		514	#endif
		515	)
		516	)
		517	{
		518	/* emulate sendfile. this is a major pain in the ass */
		519	char buf[4096];
		520	res = 0;
		521
		522	while (count)
		523	{
		524	ssize_t cnt;
		525
		526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		527
		528	if (cnt <= 0)
		529	{
		530	if (cnt && !res) res = -1;
		531	break;
		532	}
		533
		534	cnt = write (ofd, buf, cnt);
		535
		536	if (cnt <= 0)
		537	{
		538	if (cnt && !res) res = -1;
		539	break;
		540	}
		541
		542	offset += cnt;
		543	res += cnt;
		544	count -= cnt;
		545	}
		546	}
		547
		548	return res;
		549	}
		550
		551	/* read a full directory */
		552	static int
		553	scandir_ (const char path, void *namesp)
		554	{
		555	DIR *dirp = opendir (path);
		556	union
		557	{
		558	struct dirent d;
		559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		560	} u;
		561	struct dirent *entp;
		562	char name, names;
		563	int memlen = 4096;
		564	int memofs = 0;
		565	int res = 0;
		566	int errorno;
		567
		568	if (!dirp)
		569	return -1;
		570
		571	names = malloc (memlen);
		572
		573	for (;;)
		574	{
		575	errno = 0, readdir_r (dirp, &u.d, &entp);
		576
		577	if (!entp)
		578	break;
		579
		580	name = entp->d_name;
		581
		582	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		583	{
		584	int len = strlen (name) + 1;
		585
		586	res++;
		587
		588	while (memofs + len > memlen)
		589	{
		590	memlen *= 2;
		591	names = realloc (names, memlen);
		592	if (!names)
		593	break;
		594	}
		595
		596	memcpy (names + memofs, name, len);
		597	memofs += len;
		598	}
		599	}
		600
		601	errorno = errno;
		602	closedir (dirp);
		603
		604	if (errorno)
		605	{
		606	free (names);
		607	errno = errorno;
		608	res = -1;
		609	}
		610
		611	namesp = (void )names;
		612	return res;
		613	}
		614
		615	/*****************************************************************************/
305		616
306	static void *	617	static void *
307	aio_proc (void *thr_arg)	618	aio_proc (void *thr_arg)
308	{	619	{
309	aio_req req;	620	aio_req req;
…		…
339	{	650	{
340	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
341	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
342		653
343	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
344		656
345	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
346	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
347	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
348		660
349	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
350	case REQ_CLOSE: req->result = close (req->fd); break;	662	case REQ_CLOSE: req->result = close (req->fd); break;
351	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
352		666
353	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
354	case REQ_FSYNC: req->result = fsync (req->fd); break;	668	case REQ_FSYNC: req->result = fsync (req->fd); break;
		669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
355		670
356	case REQ_QUIT:	671	case REQ_QUIT:
357	break;	672	break;
358		673
359	default:	674	default:
…		…
385	while (type != REQ_QUIT);	700	while (type != REQ_QUIT);
386		701
387	return 0;	702	return 0;
388	}	703	}
389		704
		705	/*****************************************************************************/
		706
		707	static void atfork_prepare (void)
		708	{
		709	pthread_mutex_lock (&reqlock);
		710	pthread_mutex_lock (&reslock);
		711	#if !HAVE_PREADWRITE
		712	pthread_mutex_lock (&preadwritelock);
		713	#endif
		714	#if !HAVE_READDIR_R
		715	pthread_mutex_lock (&readdirlock);
		716	#endif
		717	}
		718
		719	static void atfork_parent (void)
		720	{
		721	#if !HAVE_READDIR_R
		722	pthread_mutex_unlock (&readdirlock);
		723	#endif
		724	#if !HAVE_PREADWRITE
		725	pthread_mutex_unlock (&preadwritelock);
		726	#endif
		727	pthread_mutex_unlock (&reslock);
		728	pthread_mutex_unlock (&reqlock);
		729	}
		730
		731	static void atfork_child (void)
		732	{
		733	aio_req prv;
		734
		735	started = 0;
		736
		737	while (reqs)
		738	{
		739	prv = reqs;
		740	reqs = prv->next;
		741	free_req (prv);
		742	}
		743
		744	reqs = reqe = 0;
		745
		746	while (ress)
		747	{
		748	prv = ress;
		749	ress = prv->next;
		750	free_req (prv);
		751	}
		752
		753	ress = rese = 0;
		754
		755	close (respipe [0]);
		756	close (respipe [1]);
		757	create_pipe ();
		758
		759	atfork_parent ();
		760	}
		761
		762	#define dREQ \
		763	aio_req req; \
		764	\
		765	if (SvOK (callback) && !SvROK (callback)) \
		766	croak ("clalback must be undef or of reference type"); \
		767	\
		768	Newz (0, req, 1, aio_cb); \
		769	if (!req) \
		770	croak ("out of memory during aio_req allocation"); \
		771	\
		772	req->callback = newSVsv (callback);
		773
390	MODULE = IO::AIO PACKAGE = IO::AIO	774	MODULE = IO::AIO PACKAGE = IO::AIO
391		775
392	PROTOTYPES: ENABLE	776	PROTOTYPES: ENABLE
393		777
394	BOOT:	778	BOOT:
395	{	779	{
396	if (pipe (respipe))	780	create_pipe ();
397	croak ("unable to initialize result pipe");	781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
398
399	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
400	croak ("cannot set result pipe to nonblocking mode");
401
402	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
403	croak ("cannot set result pipe to nonblocking mode");
404	}	782	}
405		783
406	void	784	void
407	min_parallel(nthreads)	785	min_parallel(nthreads)
408	int nthreads	786	int nthreads
409	PROTOTYPE: $	787	PROTOTYPE: $
410	CODE:
411	while (nthreads > started)
412	start_thread ();
413		788
414	void	789	void
415	max_parallel(nthreads)	790	max_parallel(nthreads)
416	int nthreads	791	int nthreads
417	PROTOTYPE: $	792	PROTOTYPE: $
418	CODE:
419	{
420	int cur = started;
421	while (cur > nthreads)
422	{
423	end_thread ();
424	cur--;
425	}
426
427	while (started > nthreads)
428	{
429	poll_wait ();
430	poll_cb ();
431	}
432	}
433		793
434	int	794	int
435	max_outstanding(nreqs)	795	max_outstanding(nreqs)
436	int nreqs	796	int nreqs
437	PROTOTYPE: $	797	PROTOTYPE: $
…		…
446	int mode	806	int mode
447	SV * callback	807	SV * callback
448	PROTOTYPE: $$$;$	808	PROTOTYPE: $$$;$
449	CODE:	809	CODE:
450	{	810	{
451	aio_req req;	811	dREQ;
452
453	Newz (0, req, 1, aio_cb);
454
455	if (!req)
456	croak ("out of memory during aio_req allocation");
457		812
458	req->type = REQ_OPEN;	813	req->type = REQ_OPEN;
459	req->data = newSVsv (pathname);	814	req->data = newSVsv (pathname);
460	req->dataptr = SvPV_nolen (req->data);	815	req->dataptr = SvPVbyte_nolen (req->data);
461	req->fd = flags;	816	req->fd = flags;
462	req->mode = mode;	817	req->mode = mode;
463	req->callback = SvREFCNT_inc (callback);
464		818
465	send_req (req);	819	send_req (req);
466	}	820	}
467		821
468	void	822	void
…		…
474	aio_close = REQ_CLOSE	828	aio_close = REQ_CLOSE
475	aio_fsync = REQ_FSYNC	829	aio_fsync = REQ_FSYNC
476	aio_fdatasync = REQ_FDATASYNC	830	aio_fdatasync = REQ_FDATASYNC
477	CODE:	831	CODE:
478	{	832	{
479	aio_req req;	833	dREQ;
480
481	Newz (0, req, 1, aio_cb);
482
483	if (!req)
484	croak ("out of memory during aio_req allocation");
485		834
486	req->type = ix;	835	req->type = ix;
487	req->fh = newSVsv (fh);	836	req->fh = newSVsv (fh);
488	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
489	req->callback = SvREFCNT_inc (callback);
490		838
491	send_req (req);	839	send_req (req);
492	}	840	}
493		841
494	void	842	void
495	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
496	SV * fh	844	SV * fh
497	UV offset	845	UV offset
498	IV length	846	UV length
499	SV * data	847	SV * data
500	IV dataoffset	848	UV dataoffset
501	SV * callback	849	SV * callback
502	ALIAS:	850	ALIAS:
503	aio_read = REQ_READ	851	aio_read = REQ_READ
504	aio_write = REQ_WRITE	852	aio_write = REQ_WRITE
505	PROTOTYPE: $$$$$;$	853	PROTOTYPE: $$$$$;$
506	CODE:	854	CODE:
507	{	855	{
508	aio_req req;	856	aio_req req;
509	STRLEN svlen;	857	STRLEN svlen;
510	char *svptr = SvPV (data, svlen);	858	char *svptr = SvPVbyte (data, svlen);
511		859
512	SvUPGRADE (data, SVt_PV);	860	SvUPGRADE (data, SVt_PV);
513	SvPOK_on (data);	861	SvPOK_on (data);
514		862
515	if (dataoffset < 0)	863	if (dataoffset < 0)
…		…
531	}	879	}
532		880
533	if (length < 0)	881	if (length < 0)
534	croak ("length must not be negative");	882	croak ("length must not be negative");
535		883
536	Newz (0, req, 1, aio_cb);	884	{
		885	dREQ;
537		886
538	if (!req)
539	croak ("out of memory during aio_req allocation");
540
541	req->type = ix;	887	req->type = ix;
542	req->fh = newSVsv (fh);	888	req->fh = newSVsv (fh);
543	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	889	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
544	: IoOFP (sv_2io (fh)));	890	: IoOFP (sv_2io (fh)));
545	req->offset = offset;	891	req->offset = offset;
		892	req->length = length;
		893	req->data = SvREFCNT_inc (data);
		894	req->dataptr = (char *)svptr + dataoffset;
		895
		896	if (!SvREADONLY (data))
		897	{
		898	SvREADONLY_on (data);
		899	req->data2ptr = (void *)data;
		900	}
		901
		902	send_req (req);
		903	}
		904	}
		905
		906	void
		907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		908	SV * out_fh
		909	SV * in_fh
		910	UV in_offset
		911	UV length
		912	SV * callback
		913	PROTOTYPE: $$$$;$
		914	CODE:
		915	{
		916	dREQ;
		917
		918	req->type = REQ_SENDFILE;
		919	req->fh = newSVsv (out_fh);
		920	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		921	req->fh2 = newSVsv (in_fh);
		922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		923	req->offset = in_offset;
546	req->length = length;	924	req->length = length;
547	req->data = SvREFCNT_inc (data);
548	req->dataptr = (char *)svptr + dataoffset;
549	req->callback = SvREFCNT_inc (callback);
550		925
551	send_req (req);	926	send_req (req);
552	}	927	}
553		928
554	void	929	void
…		…
558	IV length	933	IV length
559	SV * callback	934	SV * callback
560	PROTOTYPE: $$$;$	935	PROTOTYPE: $$$;$
561	CODE:	936	CODE:
562	{	937	{
563	aio_req req;	938	dREQ;
564
565	if (length < 0)
566	croak ("length must not be negative");
567
568	Newz (0, req, 1, aio_cb);
569
570	if (!req)
571	croak ("out of memory during aio_req allocation");
572		939
573	req->type = REQ_READAHEAD;	940	req->type = REQ_READAHEAD;
574	req->fh = newSVsv (fh);	941	req->fh = newSVsv (fh);
575	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
576	req->offset = offset;	943	req->offset = offset;
577	req->length = length;	944	req->length = length;
578	req->callback = SvREFCNT_inc (callback);
579		945
580	send_req (req);	946	send_req (req);
581	}	947	}
582		948
583	void	949	void
…		…
587	ALIAS:	953	ALIAS:
588	aio_stat = REQ_STAT	954	aio_stat = REQ_STAT
589	aio_lstat = REQ_LSTAT	955	aio_lstat = REQ_LSTAT
590	CODE:	956	CODE:
591	{	957	{
592	aio_req req;	958	dREQ;
593
594	Newz (0, req, 1, aio_cb);
595
596	if (!req)
597	croak ("out of memory during aio_req allocation");
598		959
599	New (0, req->statdata, 1, Stat_t);	960	New (0, req->statdata, 1, Stat_t);
600
601	if (!req->statdata)	961	if (!req->statdata)
		962	{
		963	free_req (req);
602	croak ("out of memory during aio_req->statdata allocation");	964	croak ("out of memory during aio_req->statdata allocation");
		965	}
603		966
604	if (SvPOK (fh_or_path))	967	if (SvPOK (fh_or_path))
605	{	968	{
606	req->type = ix;	969	req->type = ix;
607	req->data = newSVsv (fh_or_path);	970	req->data = newSVsv (fh_or_path);
608	req->dataptr = SvPV_nolen (req->data);	971	req->dataptr = SvPVbyte_nolen (req->data);
609	}	972	}
610	else	973	else
611	{	974	{
612	req->type = REQ_FSTAT;	975	req->type = REQ_FSTAT;
613	req->fh = newSVsv (fh_or_path);	976	req->fh = newSVsv (fh_or_path);
614	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
615	}	978	}
616		979
617	req->callback = SvREFCNT_inc (callback);
618
619	send_req (req);	980	send_req (req);
620	}	981	}
621		982
622	void	983	void
623	aio_unlink(pathname,callback=&PL_sv_undef)	984	aio_unlink(pathname,callback=&PL_sv_undef)
624	SV * pathname	985	SV * pathname
625	SV * callback	986	SV * callback
		987	ALIAS:
		988	aio_unlink = REQ_UNLINK
		989	aio_rmdir = REQ_RMDIR
626	CODE:	990	CODE:
627	{	991	{
628	aio_req req;	992	dREQ;
629		993
630	Newz (0, req, 1, aio_cb);	994	req->type = ix;
		995	req->data = newSVsv (pathname);
		996	req->dataptr = SvPVbyte_nolen (req->data);
631		997
632	if (!req)	998	send_req (req);
633	croak ("out of memory during aio_req allocation");	999	}
		1000
		1001	void
		1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		1003	SV * oldpath
		1004	SV * newpath
		1005	SV * callback
		1006	CODE:
		1007	{
		1008	dREQ;
634		1009
635	req->type = REQ_UNLINK;	1010	req->type = REQ_SYMLINK;
		1011	req->fh = newSVsv (oldpath);
		1012	req->data2ptr = SvPVbyte_nolen (req->fh);
		1013	req->data = newSVsv (newpath);
		1014	req->dataptr = SvPVbyte_nolen (req->data);
		1015
		1016	send_req (req);
		1017	}
		1018
		1019	void
		1020	aio_readdir(pathname,callback=&PL_sv_undef)
		1021	SV * pathname
		1022	SV * callback
		1023	CODE:
		1024	{
		1025	dREQ;
		1026
		1027	req->type = REQ_READDIR;
636	req->data = newSVsv (pathname);	1028	req->data = newSVsv (pathname);
637	req->dataptr = SvPV_nolen (req->data);	1029	req->dataptr = SvPVbyte_nolen (req->data);
638	req->callback = SvREFCNT_inc (callback);
639		1030
640	send_req (req);	1031	send_req (req);
641	}	1032	}
642		1033
643	void	1034	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC vs. Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC vs.
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC