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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC vs.
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC

…		…
5	#include "perl.h"	5	#include "perl.h"
6	#include "XSUB.h"	6	#include "XSUB.h"
7		7
8	#include "autoconf/config.h"	8	#include "autoconf/config.h"
9		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
10	#include <sys/types.h>	13	#include <sys/types.h>
11	#include <sys/stat.h>	14	#include <sys/stat.h>
12		15	#include <limits.h>
13	#include <unistd.h>	16	#include <unistd.h>
14	#include <fcntl.h>	17	#include <fcntl.h>
15	#include <signal.h>	18	#include <signal.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
18	#include <pthread.h>	21	#if HAVE_SENDFILE
19		22	# if __linux
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	23	# include <sys/sendfile.h>
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	24	# elif __freebsd
22	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
23		35
24	#if __ia64	36	#if __ia64
25	# define STACKSIZE 65536	37	# define STACKSIZE 65536
26	#else	38	#else
27	# define STACKSIZE 4096	39	# define STACKSIZE 8192
28	#endif	40	#endif
29		41
30	enum {	42	enum {
31	REQ_QUIT,	43	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	44	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		46	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	48	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,	49	REQ_UNLINK, REQ_RMDIR,
		50	REQ_READDIR,
37	REQ_SYMLINK,	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;
		67	SV fh, fh2;
52	void dataptr, data2ptr;	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;
66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67	static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
68	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69		84
70	static volatile aio_req reqs, reqe; /* queue start, queue end */	85	static volatile aio_req reqs, reqe; /* queue start, queue end */
71	static volatile aio_req ress, rese; /* queue start, queue end */	86	static volatile aio_req ress, rese; /* queue start, queue end */
		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	}
72		110
73	static void	111	static void
74	poll_wait ()	112	poll_wait ()
75	{	113	{
76	if (nreqs && !ress)	114	if (nreqs && !ress)
…		…
86	static int	124	static int
87	poll_cb ()	125	poll_cb ()
88	{	126	{
89	dSP;	127	dSP;
90	int count = 0;	128	int count = 0;
		129	int do_croak = 0;
91	aio_req req, prv;	130	aio_req req;
92		131
		132	for (;;)
		133	{
93	pthread_mutex_lock (&reslock);	134	pthread_mutex_lock (&reslock);
		135	req = ress;
94		136
95	{	137	if (req)
		138	{
		139	ress = req->next;
		140
		141	if (!ress)
		142	{
96	/* read any signals sent by the worker threads */	143	/* read any signals sent by the worker threads */
97	char buf [32];	144	char buf [32];
98	while (read (respipe [0], buf, 32) == 32)	145	while (read (respipe [0], buf, 32) == 32)
		146	;
		147
		148	rese = 0;
		149	}
99	;	150	}
100	}
101		151
102	req = ress;
103	ress = rese = 0;
104
105	pthread_mutex_unlock (&reslock);	152	pthread_mutex_unlock (&reslock);
106		153
107	while (req)	154	if (!req)
108	{	155	break;
		156
109	nreqs--;	157	nreqs--;
110		158
111	if (req->type == REQ_QUIT)	159	if (req->type == REQ_QUIT)
112	started--;	160	started--;
113	else	161	else
114	{	162	{
115	int errorno = errno;	163	int errorno = errno;
116	errno = req->errorno;	164	errno = req->errorno;
117		165
118	if (req->type == REQ_READ)	166	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		168
		169	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		170	SvREADONLY_off (req->data);
		171
122	if (req->data)	172	if (req->statdata)
123	SvREFCNT_dec (req->data);
124
125	if (req->fh)
126	SvREFCNT_dec (req->fh);
127
128	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
129	{	173	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	175	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	176	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	177	}
136		178
137	ENTER;	179	ENTER;
138	PUSHMARK (SP);	180	PUSHMARK (SP);
139	XPUSHs (sv_2mortal (newSViv (req->result)));
140		181
141	if (req->type == REQ_OPEN)	182	if (req->type == REQ_READDIR)
142	{	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	{
143	/* convert fd to fh */	211	/* convert fd to fh */
144	SV *fh;	212	SV *fh;
145		213
146	PUTBACK;	214	PUTBACK;
147	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	215	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
148	SPAGAIN;	216	SPAGAIN;
149		217
150	fh = SvREFCNT_inc (POPs);	218	fh = SvREFCNT_inc (POPs);
151		219
152	PUSHMARK (SP);	220	PUSHMARK (SP);
153	XPUSHs (sv_2mortal (fh));	221	XPUSHs (sv_2mortal (fh));
		222	}
154	}	223	}
155		224
156	if (SvOK (req->callback))	225	if (SvOK (req->callback))
157	{	226	{
158	PUTBACK;	227	PUTBACK;
159	call_sv (req->callback, G_VOID \| G_EVAL);	228	call_sv (req->callback, G_VOID \| G_EVAL);
160	SPAGAIN;	229	SPAGAIN;
		230
		231	if (SvTRUE (ERRSV))
		232	{
		233	free_req (req);
		234	croak (0);
		235	}
161	}	236	}
162		237
163	LEAVE;	238	LEAVE;
164
165	if (req->callback)
166	SvREFCNT_dec (req->callback);
167		239
168	errno = errorno;	240	errno = errorno;
169	count++;	241	count++;
170	}	242	}
171		243
172	prv = req;	244	free_req (req);
173	req = req->next;
174	Safefree (prv);
175
176	/* TODO: croak on errors? */
177	}	245	}
178		246
179	return count;	247	return count;
180	}	248	}
181		249
…		…
202	}	270	}
203		271
204	static void	272	static void
205	send_req (aio_req req)	273	send_req (aio_req req)
206	{	274	{
		275	while (started < wanted && nreqs >= started)
		276	start_thread ();
		277
207	nreqs++;	278	nreqs++;
208		279
209	pthread_mutex_lock (&reqlock);	280	pthread_mutex_lock (&reqlock);
210		281
211	req->next = 0;	282	req->next = 0;
…		…
219	reqe = reqs = req;	290	reqe = reqs = req;
220		291
221	pthread_cond_signal (&reqwait);	292	pthread_cond_signal (&reqwait);
222	pthread_mutex_unlock (&reqlock);	293	pthread_mutex_unlock (&reqlock);
223		294
224	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)
225	{	337	{
226	poll_wait ();	338	poll_wait ();
227	poll_cb ();	339	poll_cb ();
228	}	340	}
229	}	341	}
230		342
231	static void	343	static void create_pipe ()
232	end_thread (void)
233	{	344	{
234	aio_req req;	345	if (pipe (respipe))
235	New (0, req, 1, aio_cb);	346	croak ("unable to initialize result pipe");
236	req->type = REQ_QUIT;
237		347
238	send_req (req);	348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
239	}	349	croak ("cannot set result pipe to nonblocking mode");
240		350
241		351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
242	static void min_parallel (int nthreads)	352	croak ("cannot set result pipe to nonblocking mode");
243	{
244	while (nthreads > started)
245	start_thread ();
246	}
247
248	static void max_parallel (int nthreads)
249	{
250	int cur = started;
251	while (cur > nthreads)
252	{
253	end_thread ();
254	cur--;
255	}
256
257	while (started > nthreads)
258	{
259	poll_wait ();
260	poll_cb ();
261	}
262	}
263
264	static int fork_started;
265
266	static void atfork_prepare (void)
267	{
268	pthread_mutex_lock (&frklock);
269
270	fork_started = started;
271
272	for (;;) {
273	while (nreqs)
274	{
275	poll_wait ();
276	poll_cb ();
277	}
278
279	max_parallel (0);
280
281	pthread_mutex_lock (&reqlock);
282
283	if (!nreqs && !started)
284	break;
285
286	pthread_mutex_unlock (&reqlock);
287
288	min_parallel (fork_started);
289	}
290
291	pthread_mutex_lock (&reslock);
292
293	assert (!started);
294	assert (!nreqs);
295	assert (!reqs && !reqe);
296	assert (!ress && !rese);
297	}
298
299	static void atfork_parent (void)
300	{
301	pthread_mutex_unlock (&reslock);
302	min_parallel (fork_started);
303	pthread_mutex_unlock (&reqlock);
304	pthread_mutex_unlock (&frklock);
305	}
306
307	static void atfork_child (void)
308	{
309	reqs = reqe = 0;
310
311	atfork_parent ();
312	}	353	}
313		354
314	/*****************************************************************************/	355	/*****************************************************************************/
315	/* work around various missing functions */	356	/* work around various missing functions */
316		357
…		…
321	/*	362	/*
322	* make our pread/pwrite safe against themselves, but not against	363	* make our pread/pwrite safe against themselves, but not against
323	* 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,
324	* but that's your problem, not mine.	365	* but that's your problem, not mine.
325	*/	366	*/
326	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
327		368
328	static ssize_t	369	static ssize_t
329	pread (int fd, void *buf, size_t count, off_t offset)	370	pread (int fd, void *buf, size_t count, off_t offset)
330	{	371	{
331	ssize_t res;	372	ssize_t res;
332	off_t ooffset;	373	off_t ooffset;
333		374
334	pthread_mutex_lock (&iolock);	375	pthread_mutex_lock (&preadwritelock);
335	ooffset = lseek (fd, 0, SEEK_CUR);	376	ooffset = lseek (fd, 0, SEEK_CUR);
336	lseek (fd, offset, SEEK_SET);	377	lseek (fd, offset, SEEK_SET);
337	res = read (fd, buf, count);	378	res = read (fd, buf, count);
338	lseek (fd, ooffset, SEEK_SET);	379	lseek (fd, ooffset, SEEK_SET);
339	pthread_mutex_unlock (&iolock);	380	pthread_mutex_unlock (&preadwritelock);
340		381
341	return res;	382	return res;
342	}	383	}
343		384
344	static ssize_t	385	static ssize_t
345	pwrite (int fd, void *buf, size_t count, off_t offset)	386	pwrite (int fd, void *buf, size_t count, off_t offset)
346	{	387	{
347	ssize_t res;	388	ssize_t res;
348	off_t ooffset;	389	off_t ooffset;
349		390
350	pthread_mutex_lock (&iolock);	391	pthread_mutex_lock (&preadwritelock);
351	ooffset = lseek (fd, 0, SEEK_CUR);	392	ooffset = lseek (fd, 0, SEEK_CUR);
352	lseek (fd, offset, SEEK_SET);	393	lseek (fd, offset, SEEK_SET);
353	res = write (fd, buf, count);	394	res = write (fd, buf, count);
354	lseek (fd, offset, SEEK_SET);	395	lseek (fd, offset, SEEK_SET);
355	pthread_mutex_unlock (&iolock);	396	pthread_mutex_unlock (&preadwritelock);
356		397
357	return res;	398	return res;
358	}	399	}
359	#endif	400	#endif
360		401
…		…
363	#endif	404	#endif
364		405
365	#if !HAVE_READAHEAD	406	#if !HAVE_READAHEAD
366	# define readahead aio_readahead	407	# define readahead aio_readahead
367		408
368	static char readahead_buf[4096];
369
370	static ssize_t	409	static ssize_t
371	readahead (int fd, off_t offset, size_t count)	410	readahead (int fd, off_t offset, size_t count)
372	{	411	{
		412	char readahead_buf[4096];
		413
373	while (count > 0)	414	while (count > 0)
374	{	415	{
375	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
376		417
377	pread (fd, readahead_buf, len, offset);	418	pread (fd, readahead_buf, len, offset);
…		…
380	}	421	}
381		422
382	errno = 0;	423	errno = 0;
383	}	424	}
384	#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	}
385		614
386	/*****************************************************************************/	615	/*****************************************************************************/
387		616
388	static void *	617	static void *
389	aio_proc (void *thr_arg)	618	aio_proc (void *thr_arg)
…		…
421	{	650	{
422	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;
423	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;
424		653
425	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;
426		656
427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
430		660
…		…
434	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
435	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
436		666
437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
438	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;
439		670
440	case REQ_QUIT:	671	case REQ_QUIT:
441	break;	672	break;
442		673
443	default:	674	default:
…		…
467	pthread_mutex_unlock (&reslock);	698	pthread_mutex_unlock (&reslock);
468	}	699	}
469	while (type != REQ_QUIT);	700	while (type != REQ_QUIT);
470		701
471	return 0;	702	return 0;
		703	}
		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 ();
472	}	760	}
473		761
474	#define dREQ \	762	#define dREQ \
475	aio_req req; \	763	aio_req req; \
476	\	764	\
…		…
479	\	767	\
480	Newz (0, req, 1, aio_cb); \	768	Newz (0, req, 1, aio_cb); \
481	if (!req) \	769	if (!req) \
482	croak ("out of memory during aio_req allocation"); \	770	croak ("out of memory during aio_req allocation"); \
483	\	771	\
484	req->callback = SvREFCNT_inc (callback);	772	req->callback = newSVsv (callback);
485		773
486	MODULE = IO::AIO PACKAGE = IO::AIO	774	MODULE = IO::AIO PACKAGE = IO::AIO
487		775
488	PROTOTYPES: ENABLE	776	PROTOTYPES: ENABLE
489		777
490	BOOT:	778	BOOT:
491	{	779	{
492	if (pipe (respipe))	780	create_pipe ();
493	croak ("unable to initialize result pipe");
494
495	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
496	croak ("cannot set result pipe to nonblocking mode");
497
498	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
499	croak ("cannot set result pipe to nonblocking mode");
500
501	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
502	}	782	}
503		783
504	void	784	void
505	min_parallel(nthreads)	785	min_parallel(nthreads)
…		…
561		841
562	void	842	void
563	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
564	SV * fh	844	SV * fh
565	UV offset	845	UV offset
566	IV length	846	UV length
567	SV * data	847	SV * data
568	IV dataoffset	848	UV dataoffset
569	SV * callback	849	SV * callback
570	ALIAS:	850	ALIAS:
571	aio_read = REQ_READ	851	aio_read = REQ_READ
572	aio_write = REQ_WRITE	852	aio_write = REQ_WRITE
573	PROTOTYPE: $$$$$;$	853	PROTOTYPE: $$$$$;$
…		…
610	: IoOFP (sv_2io (fh)));	890	: IoOFP (sv_2io (fh)));
611	req->offset = offset;	891	req->offset = offset;
612	req->length = length;	892	req->length = length;
613	req->data = SvREFCNT_inc (data);	893	req->data = SvREFCNT_inc (data);
614	req->dataptr = (char *)svptr + dataoffset;	894	req->dataptr = (char *)svptr + dataoffset;
615	req->callback = SvREFCNT_inc (callback);	895
		896	if (!SvREADONLY (data))
		897	{
		898	SvREADONLY_on (data);
		899	req->data2ptr = (void *)data;
		900	}
616		901
617	send_req (req);	902	send_req (req);
618	}	903	}
		904	}
		905
		906	void
		907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		908	SV * out_fh
		909	SV * in_fh
		910	UV in_offset
		911	UV length
		912	SV * callback
		913	PROTOTYPE: $$$$;$
		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;
		924	req->length = length;
		925
		926	send_req (req);
619	}	927	}
620		928
621	void	929	void
622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
623	SV * fh	931	SV * fh
…		…
649	{	957	{
650	dREQ;	958	dREQ;
651		959
652	New (0, req->statdata, 1, Stat_t);	960	New (0, req->statdata, 1, Stat_t);
653	if (!req->statdata)	961	if (!req->statdata)
		962	{
		963	free_req (req);
654	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");	964	croak ("out of memory during aio_req->statdata allocation");
		965	}
655		966
656	if (SvPOK (fh_or_path))	967	if (SvPOK (fh_or_path))
657	{	968	{
658	req->type = ix;	969	req->type = ix;
659	req->data = newSVsv (fh_or_path);	970	req->data = newSVsv (fh_or_path);
…		…
704		1015
705	send_req (req);	1016	send_req (req);
706	}	1017	}
707		1018
708	void	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;
		1028	req->data = newSVsv (pathname);
		1029	req->dataptr = SvPVbyte_nolen (req->data);
		1030
		1031	send_req (req);
		1032	}
		1033
		1034	void
709	flush()	1035	flush()
710	PROTOTYPE:	1036	PROTOTYPE:
711	CODE:	1037	CODE:
712	while (nreqs)	1038	while (nreqs)
713	{	1039	{

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing IO-AIO/AIO.xs (file contents): Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC vs. Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC vs.
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC