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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.18 by root, Sun Jul 31 19:00:31 2005 UTC vs.
Revision 1.37 by root, Tue Aug 23 12:37:19 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	#ifndef _REENTRANT	21	#if HAVE_SENDFILE
16	# define _REENTRANT 1	22	# if __linux
		23	# include <sys/sendfile.h>
		24	# elif __freebsd
		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
17	#endif	33	# endif
18	#include <errno.h>	34	#endif
19
20	#include <pthread.h>
21
22	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */
23	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */
24	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
25		35
26	#if __ia64	36	#if __ia64
27	# define STACKSIZE 65536	37	# define STACKSIZE 65536
28	#else	38	#else
29	# define STACKSIZE 4096	39	# define STACKSIZE 8192
30	#endif	40	#endif
31		41
32	enum {	42	enum {
33	REQ_QUIT,	43	REQ_QUIT,
34	REQ_OPEN, REQ_CLOSE,	44	REQ_OPEN, REQ_CLOSE,
35	REQ_READ, REQ_WRITE, REQ_READAHEAD,	45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		46	REQ_SENDFILE,
36	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37	REQ_FSYNC, REQ_FDATASYNC,	48	REQ_FSYNC, REQ_FDATASYNC,
		49	REQ_UNLINK, REQ_RMDIR,
		50	REQ_READDIR,
		51	REQ_SYMLINK,
38	};	52	};
39		53
40	typedef struct aio_cb {	54	typedef struct aio_cb {
41	struct aio_cb *volatile next;	55	struct aio_cb *volatile next;
42		56
43	int type;	57	int type;
44		58
		59	/* should receive a cleanup, with unions */
45	int fd;	60	int fd, fd2;
46	off_t offset;	61	off_t offset;
47	size_t length;	62	size_t length;
48	ssize_t result;	63	ssize_t result;
49	mode_t mode; /* open */	64	mode_t mode; /* open */
50	int errorno;	65	int errorno;
51	SV data, callback, *fh;	66	SV data, callback;
52	void *dataptr;	67	SV fh, fh2;
		68	void dataptr, data2ptr;
53	STRLEN dataoffset;	69	STRLEN dataoffset;
54		70
55	Stat_t *statdata;	71	Stat_t *statdata;
56	} aio_cb;	72	} aio_cb;
57		73
58	typedef aio_cb *aio_req;	74	typedef aio_cb *aio_req;
59		75
60	static int started;	76	static int started, wanted;
61	static volatile int nreqs;	77	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	78	static int max_outstanding = 1<<30;
63	static int respipe [2];	79	static int respipe [2];
64		80
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		84
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	85	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	86	static volatile aio_req ress, rese; /* queue start, queue end */
71		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
72	static void	111	static void
73	poll_wait ()	112	poll_wait ()
74	{	113	{
75	if (nreqs && !ress)	114	if (nreqs && !ress)
76	{	115	{
…		…
85	static int	124	static int
86	poll_cb ()	125	poll_cb ()
87	{	126	{
88	dSP;	127	dSP;
89	int count = 0;	128	int count = 0;
		129	int do_croak = 0;
90	aio_req req, prv;	130	aio_req req;
91		131
		132	for (;;)
		133	{
92	pthread_mutex_lock (&reslock);	134	pthread_mutex_lock (&reslock);
		135	req = ress;
93		136
94	{	137	if (req)
		138	{
		139	ress = req->next;
		140
		141	if (!ress)
		142	{
95	/* read any signals sent by the worker threads */	143	/* read any signals sent by the worker threads */
96	char buf [32];	144	char buf [32];
97	while (read (respipe [0], buf, 32) > 0)	145	while (read (respipe [0], buf, 32) == 32)
		146	;
		147
		148	rese = 0;
		149	}
98	;	150	}
99	}
100		151
101	req = ress;
102	ress = rese = 0;
103
104	pthread_mutex_unlock (&reslock);	152	pthread_mutex_unlock (&reslock);
105		153
106	while (req)	154	if (!req)
107	{	155	break;
		156
108	nreqs--;	157	nreqs--;
109		158
110	if (req->type == REQ_QUIT)	159	if (req->type == REQ_QUIT)
111	started--;	160	started--;
112	else	161	else
113	{	162	{
114	int errorno = errno;	163	int errorno = errno;
115	errno = req->errorno;	164	errno = req->errorno;
116		165
117	if (req->type == REQ_READ)	166	if (req->type == REQ_READ)
118	SvCUR_set (req->data, req->dataoffset	167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
119	+ req->result > 0 ? req->result : 0);
120		168
		169	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		170	SvREADONLY_off (req->data);
		171
121	if (req->data)	172	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	{	173	{
129	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130	PL_laststatval = req->result;	175	PL_laststatval = req->result;
131	PL_statcache = *(req->statdata);	176	PL_statcache = *(req->statdata);
132
133	Safefree (req->statdata);
134	}	177	}
135		178
136	ENTER;	179	ENTER;
137	PUSHMARK (SP);	180	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));
139		181
140	if (req->type == REQ_OPEN)	182	if (req->type == REQ_READDIR)
141	{	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	{
142	/* convert fd to fh */	211	/* convert fd to fh */
143	SV *fh;	212	SV *fh;
144		213
145	PUTBACK;	214	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	215	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	216	SPAGAIN;
148		217
149	fh = SvREFCNT_inc (POPs);	218	fh = SvREFCNT_inc (POPs);
150		219
151	PUSHMARK (SP);	220	PUSHMARK (SP);
152	XPUSHs (sv_2mortal (fh));	221	XPUSHs (sv_2mortal (fh));
		222	}
153	}	223	}
154		224
155	if (SvOK (req->callback))	225	if (SvOK (req->callback))
156	{	226	{
157	PUTBACK;	227	PUTBACK;
158	call_sv (req->callback, G_VOID \| G_EVAL);	228	call_sv (req->callback, G_VOID \| G_EVAL);
159	SPAGAIN;	229	SPAGAIN;
		230
		231	if (SvTRUE (ERRSV))
		232	{
		233	free_req (req);
		234	croak (0);
		235	}
160	}	236	}
161		237
162	LEAVE;	238	LEAVE;
163
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		239
167	errno = errorno;	240	errno = errorno;
168	count++;	241	count++;
169	}	242	}
170		243
171	prv = req;	244	free_req (req);
172	req = req->next;
173	Safefree (prv);
174
175	/* TODO: croak on errors? */
176	}	245	}
177		246
178	return count;	247	return count;
179	}	248	}
180		249
…		…
201	}	270	}
202		271
203	static void	272	static void
204	send_req (aio_req req)	273	send_req (aio_req req)
205	{	274	{
		275	while (started < wanted && nreqs >= started)
		276	start_thread ();
		277
206	nreqs++;	278	nreqs++;
207		279
208	pthread_mutex_lock (&reqlock);	280	pthread_mutex_lock (&reqlock);
209		281
210	req->next = 0;	282	req->next = 0;
…		…
218	reqe = reqs = req;	290	reqe = reqs = req;
219		291
220	pthread_cond_signal (&reqwait);	292	pthread_cond_signal (&reqwait);
221	pthread_mutex_unlock (&reqlock);	293	pthread_mutex_unlock (&reqlock);
222		294
223	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)
224	{	337	{
225	poll_wait ();	338	poll_wait ();
226	poll_cb ();	339	poll_cb ();
227	}	340	}
228	}	341	}
229		342
230	static void	343	static void create_pipe ()
231	end_thread (void)
232	{	344	{
233	aio_req req;	345	if (pipe (respipe))
234	New (0, req, 1, aio_cb);	346	croak ("unable to initialize result pipe");
235	req->type = REQ_QUIT;
236		347
237	send_req (req);	348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
238	}	349	croak ("cannot set result pipe to nonblocking mode");
239		350
		351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		352	croak ("cannot set result pipe to nonblocking mode");
		353	}
		354
		355	/*****************************************************************************/
240	/* work around various missing functions */	356	/* work around various missing functions */
241		357
242	#if !HAVE_PREADWRITE	358	#if !HAVE_PREADWRITE
243	# define pread aio_pread	359	# define pread aio_pread
244	# define pwrite aio_pwrite	360	# define pwrite aio_pwrite
…		…
246	/*	362	/*
247	* make our pread/pwrite safe against themselves, but not against	363	* make our pread/pwrite safe against themselves, but not against
248	* 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,
249	* but that's your problem, not mine.	365	* but that's your problem, not mine.
250	*/	366	*/
251	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
252		368
253	static ssize_t	369	static ssize_t
254	pread (int fd, void *buf, size_t count, off_t offset)	370	pread (int fd, void *buf, size_t count, off_t offset)
255	{	371	{
256	ssize_t res;	372	ssize_t res;
257	off_t ooffset;	373	off_t ooffset;
258		374
259	pthread_mutex_lock (&iolock);	375	pthread_mutex_lock (&preadwritelock);
260	ooffset = lseek (fd, 0, SEEK_CUR);	376	ooffset = lseek (fd, 0, SEEK_CUR);
261	lseek (fd, offset, SEEK_SET);	377	lseek (fd, offset, SEEK_SET);
262	res = read (fd, buf, count);	378	res = read (fd, buf, count);
263	lseek (fd, ooffset, SEEK_SET);	379	lseek (fd, ooffset, SEEK_SET);
264	pthread_mutex_unlock (&iolock);	380	pthread_mutex_unlock (&preadwritelock);
265		381
266	return res;	382	return res;
267	}	383	}
268		384
269	static ssize_t	385	static ssize_t
270	pwrite (int fd, void *buf, size_t count, off_t offset)	386	pwrite (int fd, void *buf, size_t count, off_t offset)
271	{	387	{
272	ssize_t res;	388	ssize_t res;
273	off_t ooffset;	389	off_t ooffset;
274		390
275	pthread_mutex_lock (&iolock);	391	pthread_mutex_lock (&preadwritelock);
276	ooffset = lseek (fd, 0, SEEK_CUR);	392	ooffset = lseek (fd, 0, SEEK_CUR);
277	lseek (fd, offset, SEEK_SET);	393	lseek (fd, offset, SEEK_SET);
278	res = write (fd, buf, count);	394	res = write (fd, buf, count);
279	lseek (fd, offset, SEEK_SET);	395	lseek (fd, offset, SEEK_SET);
280	pthread_mutex_unlock (&iolock);	396	pthread_mutex_unlock (&preadwritelock);
281		397
282	return res;	398	return res;
283	}	399	}
284	#endif	400	#endif
285		401
…		…
288	#endif	404	#endif
289		405
290	#if !HAVE_READAHEAD	406	#if !HAVE_READAHEAD
291	# define readahead aio_readahead	407	# define readahead aio_readahead
292		408
293	static char readahead_buf[4096];
294
295	static ssize_t	409	static ssize_t
296	readahead (int fd, off_t offset, size_t count)	410	readahead (int fd, off_t offset, size_t count)
297	{	411	{
		412	char readahead_buf[4096];
		413
298	while (count > 0)	414	while (count > 0)
299	{	415	{
300	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301		417
302	pread (fd, readahead_buf, len, offset);	418	pread (fd, readahead_buf, len, offset);
…		…
305	}	421	}
306		422
307	errno = 0;	423	errno = 0;
308	}	424	}
309	#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	# else
		505	res = -1;
		506	errno = ENOSYS;
		507	# endif
		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	for (;;)
		523	{
		524	ssize_t cnt;
		525
		526	cnt = pread (ifd, buf, 4096, 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	}
		545	}
		546
		547	return res;
		548	}
		549
		550	/* read a full directory */
		551	static int
		552	scandir_ (const char path, void *namesp)
		553	{
		554	DIR *dirp = opendir (path);
		555	union
		556	{
		557	struct dirent d;
		558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		559	} u;
		560	struct dirent *entp;
		561	char name, names;
		562	int memlen = 4096;
		563	int memofs = 0;
		564	int res = 0;
		565	int errorno;
		566
		567	if (!dirp)
		568	return -1;
		569
		570	names = malloc (memlen);
		571
		572	for (;;)
		573	{
		574	errno = 0, readdir_r (dirp, &u.d, &entp);
		575
		576	if (!entp)
		577	break;
		578
		579	name = entp->d_name;
		580
		581	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		582	{
		583	int len = strlen (name) + 1;
		584
		585	res++;
		586
		587	while (memofs + len > memlen)
		588	{
		589	memlen *= 2;
		590	names = realloc (names, memlen);
		591	if (!names)
		592	break;
		593	}
		594
		595	memcpy (names + memofs, name, len);
		596	memofs += len;
		597	}
		598	}
		599
		600	errorno = errno;
		601	closedir (dirp);
		602
		603	if (errorno)
		604	{
		605	free (names);
		606	errno = errorno;
		607	res = -1;
		608	}
		609
		610	namesp = (void )names;
		611	return res;
		612	}
		613
		614	/*****************************************************************************/
310		615
311	static void *	616	static void *
312	aio_proc (void *thr_arg)	617	aio_proc (void *thr_arg)
313	{	618	{
314	aio_req req;	619	aio_req req;
…		…
344	{	649	{
345	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	650	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;	651	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
347		652
348	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
349		655
350	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353		659
354	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355	case REQ_CLOSE: req->result = close (req->fd); break;	661	case REQ_CLOSE: req->result = close (req->fd); break;
356	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
357		665
358	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359	case REQ_FSYNC: req->result = fsync (req->fd); break;	667	case REQ_FSYNC: req->result = fsync (req->fd); break;
		668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
360		669
361	case REQ_QUIT:	670	case REQ_QUIT:
362	break;	671	break;
363		672
364	default:	673	default:
…		…
390	while (type != REQ_QUIT);	699	while (type != REQ_QUIT);
391		700
392	return 0;	701	return 0;
393	}	702	}
394		703
		704	/*****************************************************************************/
		705
		706	static void atfork_prepare (void)
		707	{
		708	pthread_mutex_lock (&reqlock);
		709	pthread_mutex_lock (&reslock);
		710	#if !HAVE_PREADWRITE
		711	pthread_mutex_lock (&preadwritelock);
		712	#endif
		713	#if !HAVE_READDIR_R
		714	pthread_mutex_lock (&readdirlock);
		715	#endif
		716	}
		717
		718	static void atfork_parent (void)
		719	{
		720	#if !HAVE_READDIR_R
		721	pthread_mutex_unlock (&readdirlock);
		722	#endif
		723	#if !HAVE_PREADWRITE
		724	pthread_mutex_unlock (&preadwritelock);
		725	#endif
		726	pthread_mutex_unlock (&reslock);
		727	pthread_mutex_unlock (&reqlock);
		728	}
		729
		730	static void atfork_child (void)
		731	{
		732	aio_req prv;
		733
		734	started = 0;
		735
		736	while (reqs)
		737	{
		738	prv = reqs;
		739	reqs = prv->next;
		740	free_req (prv);
		741	}
		742
		743	reqs = reqe = 0;
		744
		745	while (ress)
		746	{
		747	prv = ress;
		748	ress = prv->next;
		749	free_req (prv);
		750	}
		751
		752	ress = rese = 0;
		753
		754	close (respipe [0]);
		755	close (respipe [1]);
		756	create_pipe ();
		757
		758	atfork_parent ();
		759	}
		760
		761	#define dREQ \
		762	aio_req req; \
		763	\
		764	if (SvOK (callback) && !SvROK (callback)) \
		765	croak ("clalback must be undef or of reference type"); \
		766	\
		767	Newz (0, req, 1, aio_cb); \
		768	if (!req) \
		769	croak ("out of memory during aio_req allocation"); \
		770	\
		771	req->callback = newSVsv (callback);
		772
395	MODULE = IO::AIO PACKAGE = IO::AIO	773	MODULE = IO::AIO PACKAGE = IO::AIO
396		774
397	PROTOTYPES: ENABLE	775	PROTOTYPES: ENABLE
398		776
399	BOOT:	777	BOOT:
400	{	778	{
401	if (pipe (respipe))	779	create_pipe ();
402	croak ("unable to initialize result pipe");	780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
403
404	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
405	croak ("cannot set result pipe to nonblocking mode");
406
407	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
408	croak ("cannot set result pipe to nonblocking mode");
409	}	781	}
410		782
411	void	783	void
412	min_parallel(nthreads)	784	min_parallel(nthreads)
413	int nthreads	785	int nthreads
414	PROTOTYPE: $	786	PROTOTYPE: $
415	CODE:
416	while (nthreads > started)
417	start_thread ();
418		787
419	void	788	void
420	max_parallel(nthreads)	789	max_parallel(nthreads)
421	int nthreads	790	int nthreads
422	PROTOTYPE: $	791	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		792
439	int	793	int
440	max_outstanding(nreqs)	794	max_outstanding(nreqs)
441	int nreqs	795	int nreqs
442	PROTOTYPE: $	796	PROTOTYPE: $
…		…
451	int mode	805	int mode
452	SV * callback	806	SV * callback
453	PROTOTYPE: $$$;$	807	PROTOTYPE: $$$;$
454	CODE:	808	CODE:
455	{	809	{
456	aio_req req;	810	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		811
463	req->type = REQ_OPEN;	812	req->type = REQ_OPEN;
464	req->data = newSVsv (pathname);	813	req->data = newSVsv (pathname);
465	req->dataptr = SvPV_nolen (req->data);	814	req->dataptr = SvPVbyte_nolen (req->data);
466	req->fd = flags;	815	req->fd = flags;
467	req->mode = mode;	816	req->mode = mode;
468	req->callback = SvREFCNT_inc (callback);
469		817
470	send_req (req);	818	send_req (req);
471	}	819	}
472		820
473	void	821	void
…		…
479	aio_close = REQ_CLOSE	827	aio_close = REQ_CLOSE
480	aio_fsync = REQ_FSYNC	828	aio_fsync = REQ_FSYNC
481	aio_fdatasync = REQ_FDATASYNC	829	aio_fdatasync = REQ_FDATASYNC
482	CODE:	830	CODE:
483	{	831	{
484	aio_req req;	832	dREQ;
485
486	Newz (0, req, 1, aio_cb);
487
488	if (!req)
489	croak ("out of memory during aio_req allocation");
490		833
491	req->type = ix;	834	req->type = ix;
492	req->fh = newSVsv (fh);	835	req->fh = newSVsv (fh);
493	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494	req->callback = SvREFCNT_inc (callback);
495		837
496	send_req (req);	838	send_req (req);
497	}	839	}
498		840
499	void	841	void
500	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501	SV * fh	843	SV * fh
502	UV offset	844	UV offset
503	IV length	845	UV length
504	SV * data	846	SV * data
505	IV dataoffset	847	UV dataoffset
506	SV * callback	848	SV * callback
507	ALIAS:	849	ALIAS:
508	aio_read = REQ_READ	850	aio_read = REQ_READ
509	aio_write = REQ_WRITE	851	aio_write = REQ_WRITE
510	PROTOTYPE: $$$$$;$	852	PROTOTYPE: $$$$$;$
511	CODE:	853	CODE:
512	{	854	{
513	aio_req req;	855	aio_req req;
514	STRLEN svlen;	856	STRLEN svlen;
515	char *svptr = SvPV (data, svlen);	857	char *svptr = SvPVbyte (data, svlen);
516		858
517	SvUPGRADE (data, SVt_PV);	859	SvUPGRADE (data, SVt_PV);
518	SvPOK_on (data);	860	SvPOK_on (data);
519		861
520	if (dataoffset < 0)	862	if (dataoffset < 0)
…		…
536	}	878	}
537		879
538	if (length < 0)	880	if (length < 0)
539	croak ("length must not be negative");	881	croak ("length must not be negative");
540		882
541	Newz (0, req, 1, aio_cb);	883	{
		884	dREQ;
542		885
543	if (!req)
544	croak ("out of memory during aio_req allocation");
545
546	req->type = ix;	886	req->type = ix;
547	req->fh = newSVsv (fh);	887	req->fh = newSVsv (fh);
548	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	888	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549	: IoOFP (sv_2io (fh)));	889	: IoOFP (sv_2io (fh)));
550	req->offset = offset;	890	req->offset = offset;
		891	req->length = length;
		892	req->data = SvREFCNT_inc (data);
		893	req->dataptr = (char *)svptr + dataoffset;
		894
		895	if (!SvREADONLY (data))
		896	{
		897	SvREADONLY_on (data);
		898	req->data2ptr = (void *)data;
		899	}
		900
		901	send_req (req);
		902	}
		903	}
		904
		905	void
		906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		907	SV * out_fh
		908	SV * in_fh
		909	UV in_offset
		910	UV length
		911	SV * callback
		912	PROTOTYPE: $$$$;$
		913	CODE:
		914	{
		915	dREQ;
		916
		917	req->type = REQ_SENDFILE;
		918	req->fh = newSVsv (out_fh);
		919	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		920	req->fh2 = newSVsv (in_fh);
		921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		922	req->offset = in_offset;
551	req->length = length;	923	req->length = length;
552	req->data = SvREFCNT_inc (data);
553	req->dataptr = (char *)svptr + dataoffset;
554	req->callback = SvREFCNT_inc (callback);
555		924
556	send_req (req);	925	send_req (req);
557	}	926	}
558		927
559	void	928	void
…		…
563	IV length	932	IV length
564	SV * callback	933	SV * callback
565	PROTOTYPE: $$$;$	934	PROTOTYPE: $$$;$
566	CODE:	935	CODE:
567	{	936	{
568	aio_req req;	937	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		938
578	req->type = REQ_READAHEAD;	939	req->type = REQ_READAHEAD;
579	req->fh = newSVsv (fh);	940	req->fh = newSVsv (fh);
580	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581	req->offset = offset;	942	req->offset = offset;
582	req->length = length;	943	req->length = length;
583	req->callback = SvREFCNT_inc (callback);
584		944
585	send_req (req);	945	send_req (req);
586	}	946	}
587		947
588	void	948	void
…		…
592	ALIAS:	952	ALIAS:
593	aio_stat = REQ_STAT	953	aio_stat = REQ_STAT
594	aio_lstat = REQ_LSTAT	954	aio_lstat = REQ_LSTAT
595	CODE:	955	CODE:
596	{	956	{
597	aio_req req;	957	dREQ;
598
599	Newz (0, req, 1, aio_cb);
600
601	if (!req)
602	croak ("out of memory during aio_req allocation");
603		958
604	New (0, req->statdata, 1, Stat_t);	959	New (0, req->statdata, 1, Stat_t);
605
606	if (!req->statdata)	960	if (!req->statdata)
		961	{
		962	free_req (req);
607	croak ("out of memory during aio_req->statdata allocation");	963	croak ("out of memory during aio_req->statdata allocation");
		964	}
608		965
609	if (SvPOK (fh_or_path))	966	if (SvPOK (fh_or_path))
610	{	967	{
611	req->type = ix;	968	req->type = ix;
612	req->data = newSVsv (fh_or_path);	969	req->data = newSVsv (fh_or_path);
613	req->dataptr = SvPV_nolen (req->data);	970	req->dataptr = SvPVbyte_nolen (req->data);
614	}	971	}
615	else	972	else
616	{	973	{
617	req->type = REQ_FSTAT;	974	req->type = REQ_FSTAT;
618	req->fh = newSVsv (fh_or_path);	975	req->fh = newSVsv (fh_or_path);
619	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620	}	977	}
621		978
622	req->callback = SvREFCNT_inc (callback);
623
624	send_req (req);	979	send_req (req);
625	}	980	}
626		981
627	void	982	void
628	aio_unlink(pathname,callback=&PL_sv_undef)	983	aio_unlink(pathname,callback=&PL_sv_undef)
629	SV * pathname	984	SV * pathname
630	SV * callback	985	SV * callback
		986	ALIAS:
		987	aio_unlink = REQ_UNLINK
		988	aio_rmdir = REQ_RMDIR
631	CODE:	989	CODE:
632	{	990	{
633	aio_req req;	991	dREQ;
634		992
635	Newz (0, req, 1, aio_cb);	993	req->type = ix;
		994	req->data = newSVsv (pathname);
		995	req->dataptr = SvPVbyte_nolen (req->data);
636		996
637	if (!req)	997	send_req (req);
638	croak ("out of memory during aio_req allocation");	998	}
		999
		1000	void
		1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		1002	SV * oldpath
		1003	SV * newpath
		1004	SV * callback
		1005	CODE:
		1006	{
		1007	dREQ;
639		1008
640	req->type = REQ_UNLINK;	1009	req->type = REQ_SYMLINK;
		1010	req->fh = newSVsv (oldpath);
		1011	req->data2ptr = SvPVbyte_nolen (req->fh);
		1012	req->data = newSVsv (newpath);
		1013	req->dataptr = SvPVbyte_nolen (req->data);
		1014
		1015	send_req (req);
		1016	}
		1017
		1018	void
		1019	aio_readdir(pathname,callback=&PL_sv_undef)
		1020	SV * pathname
		1021	SV * callback
		1022	CODE:
		1023	{
		1024	dREQ;
		1025
		1026	req->type = REQ_READDIR;
641	req->data = newSVsv (pathname);	1027	req->data = newSVsv (pathname);
642	req->dataptr = SvPV_nolen (req->data);	1028	req->dataptr = SvPVbyte_nolen (req->data);
643	req->callback = SvREFCNT_inc (callback);
644		1029
645	send_req (req);	1030	send_req (req);
646	}	1031	}
647		1032
648	void	1033	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.18 by root, Sun Jul 31 19:00:31 2005 UTC vs. Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.18 by root, Sun Jul 31 19:00:31 2005 UTC vs.
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC