[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 1.39 by root, Mon Feb 6 23:54:12 2006 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
		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
		33	# endif
		34	#endif
19		35
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	36	/* used for struct dirent, AIX doesn't provide it */
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	37	#ifndef NAME_MAX
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	38	# define NAME_MAX 4096
		39	#endif
23		40
24	#if __ia64	41	#if __ia64
25	# define STACKSIZE 65536	42	# define STACKSIZE 65536
26	#else	43	#else
27	# define STACKSIZE 4096	44	# define STACKSIZE 8192
28	#endif	45	#endif
29		46
30	enum {	47	enum {
31	REQ_QUIT,	48	REQ_QUIT,
32	REQ_OPEN, REQ_CLOSE,	49	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,	50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		51	REQ_SENDFILE,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	53	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,	54	REQ_UNLINK, REQ_RMDIR,
		55	REQ_READDIR,
37	REQ_SYMLINK,	56	REQ_SYMLINK,
38	};	57	};
39		58
40	typedef struct aio_cb {	59	typedef struct aio_cb {
41	struct aio_cb *volatile next;	60	struct aio_cb *volatile next;
42		61
43	int type;	62	int type;
44		63
		64	/* should receive a cleanup, with unions */
45	int fd;	65	int fd, fd2;
46	off_t offset;	66	off_t offset;
47	size_t length;	67	size_t length;
48	ssize_t result;	68	ssize_t result;
49	mode_t mode; /* open */	69	mode_t mode; /* open */
50	int errorno;	70	int errorno;
51	SV data, callback, *fh;	71	SV data, callback;
		72	SV fh, fh2;
52	void dataptr, data2ptr;	73	void dataptr, data2ptr;
53	STRLEN dataoffset;	74	STRLEN dataoffset;
54		75
55	Stat_t *statdata;	76	Stat_t *statdata;
56	} aio_cb;	77	} aio_cb;
57		78
58	typedef aio_cb *aio_req;	79	typedef aio_cb *aio_req;
59		80
60	static int started;	81	static int started, wanted;
61	static volatile int nreqs;	82	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	83	static int max_outstanding = 1<<30;
63	static int respipe [2];	84	static int respipe [2];
64		85
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	87	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;	88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69		89
70	static volatile aio_req reqs, reqe; /* queue start, queue end */	90	static volatile aio_req reqs, reqe; /* queue start, queue end */
71	static volatile aio_req ress, rese; /* queue start, queue end */	91	static volatile aio_req ress, rese; /* queue start, queue end */
		92
		93	static void free_req (aio_req req)
		94	{
		95	if (req->data)
		96	SvREFCNT_dec (req->data);
		97
		98	if (req->fh)
		99	SvREFCNT_dec (req->fh);
		100
		101	if (req->fh2)
		102	SvREFCNT_dec (req->fh2);
		103
		104	if (req->statdata)
		105	Safefree (req->statdata);
		106
		107	if (req->callback)
		108	SvREFCNT_dec (req->callback);
		109
		110	if (req->type == REQ_READDIR && req->result >= 0)
		111	free (req->data2ptr);
		112
		113	Safefree (req);
		114	}
72		115
73	static void	116	static void
74	poll_wait ()	117	poll_wait ()
75	{	118	{
76	if (nreqs && !ress)	119	if (nreqs && !ress)
…		…
86	static int	129	static int
87	poll_cb ()	130	poll_cb ()
88	{	131	{
89	dSP;	132	dSP;
90	int count = 0;	133	int count = 0;
		134	int do_croak = 0;
91	aio_req req, prv;	135	aio_req req;
92		136
		137	for (;;)
		138	{
93	pthread_mutex_lock (&reslock);	139	pthread_mutex_lock (&reslock);
		140	req = ress;
94		141
95	{	142	if (req)
		143	{
		144	ress = req->next;
		145
		146	if (!ress)
		147	{
96	/* read any signals sent by the worker threads */	148	/* read any signals sent by the worker threads */
97	char buf [32];	149	char buf [32];
98	while (read (respipe [0], buf, 32) == 32)	150	while (read (respipe [0], buf, 32) == 32)
		151	;
		152
		153	rese = 0;
		154	}
99	;	155	}
100	}
101		156
102	req = ress;
103	ress = rese = 0;
104
105	pthread_mutex_unlock (&reslock);	157	pthread_mutex_unlock (&reslock);
106		158
107	while (req)	159	if (!req)
108	{	160	break;
		161
109	nreqs--;	162	nreqs--;
110		163
111	if (req->type == REQ_QUIT)	164	if (req->type == REQ_QUIT)
112	started--;	165	started--;
113	else	166	else
114	{	167	{
115	int errorno = errno;	168	int errorno = errno;
116	errno = req->errorno;	169	errno = req->errorno;
117		170
118	if (req->type == REQ_READ)	171	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset	172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
120	+ req->result > 0 ? req->result : 0);
121		173
		174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		175	SvREADONLY_off (req->data);
		176
122	if (req->data)	177	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	{	178	{
130	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131	PL_laststatval = req->result;	180	PL_laststatval = req->result;
132	PL_statcache = *(req->statdata);	181	PL_statcache = *(req->statdata);
133
134	Safefree (req->statdata);
135	}	182	}
136		183
137	ENTER;	184	ENTER;
138	PUSHMARK (SP);	185	PUSHMARK (SP);
139	XPUSHs (sv_2mortal (newSViv (req->result)));
140		186
141	if (req->type == REQ_OPEN)	187	if (req->type == REQ_READDIR)
142	{	188	{
		189	SV *rv = &PL_sv_undef;
		190
		191	if (req->result >= 0)
		192	{
		193	char *buf = req->data2ptr;
		194	AV *av = newAV ();
		195
		196	while (req->result)
		197	{
		198	SV *sv = newSVpv (buf, 0);
		199
		200	av_push (av, sv);
		201	buf += SvCUR (sv) + 1;
		202	req->result--;
		203	}
		204
		205	rv = sv_2mortal (newRV_noinc ((SV *)av));
		206	}
		207
		208	XPUSHs (rv);
		209	}
		210	else
		211	{
		212	XPUSHs (sv_2mortal (newSViv (req->result)));
		213
		214	if (req->type == REQ_OPEN)
		215	{
143	/* convert fd to fh */	216	/* convert fd to fh */
144	SV *fh;	217	SV *fh;
145		218
146	PUTBACK;	219	PUTBACK;
147	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
148	SPAGAIN;	221	SPAGAIN;
149		222
150	fh = SvREFCNT_inc (POPs);	223	fh = SvREFCNT_inc (POPs);
151		224
152	PUSHMARK (SP);	225	PUSHMARK (SP);
153	XPUSHs (sv_2mortal (fh));	226	XPUSHs (sv_2mortal (fh));
		227	}
154	}	228	}
155		229
156	if (SvOK (req->callback))	230	if (SvOK (req->callback))
157	{	231	{
158	PUTBACK;	232	PUTBACK;
159	call_sv (req->callback, G_VOID \| G_EVAL);	233	call_sv (req->callback, G_VOID \| G_EVAL);
160	SPAGAIN;	234	SPAGAIN;
		235
		236	if (SvTRUE (ERRSV))
		237	{
		238	free_req (req);
		239	croak (0);
		240	}
161	}	241	}
162		242
163	LEAVE;	243	LEAVE;
164
165	if (req->callback)
166	SvREFCNT_dec (req->callback);
167		244
168	errno = errorno;	245	errno = errorno;
169	count++;	246	count++;
170	}	247	}
171		248
172	prv = req;	249	free_req (req);
173	req = req->next;
174	Safefree (prv);
175
176	/* TODO: croak on errors? */
177	}	250	}
178		251
179	return count;	252	return count;
180	}	253	}
181		254
…		…
202	}	275	}
203		276
204	static void	277	static void
205	send_req (aio_req req)	278	send_req (aio_req req)
206	{	279	{
		280	while (started < wanted && nreqs >= started)
		281	start_thread ();
		282
207	nreqs++;	283	nreqs++;
208		284
209	pthread_mutex_lock (&reqlock);	285	pthread_mutex_lock (&reqlock);
210		286
211	req->next = 0;	287	req->next = 0;
…		…
219	reqe = reqs = req;	295	reqe = reqs = req;
220		296
221	pthread_cond_signal (&reqwait);	297	pthread_cond_signal (&reqwait);
222	pthread_mutex_unlock (&reqlock);	298	pthread_mutex_unlock (&reqlock);
223		299
224	while (nreqs > max_outstanding)	300	if (nreqs > max_outstanding)
		301	for (;;)
		302	{
		303	poll_cb ();
		304
		305	if (nreqs <= max_outstanding)
		306	break;
		307
		308	poll_wait ();
		309	}
		310	}
		311
		312	static void
		313	end_thread (void)
		314	{
		315	aio_req req;
		316	Newz (0, req, 1, aio_cb);
		317	req->type = REQ_QUIT;
		318
		319	send_req (req);
		320	}
		321
		322	static void min_parallel (int nthreads)
		323	{
		324	if (wanted < nthreads)
		325	wanted = nthreads;
		326	}
		327
		328	static void max_parallel (int nthreads)
		329	{
		330	int cur = started;
		331
		332	if (wanted > nthreads)
		333	wanted = nthreads;
		334
		335	while (cur > wanted)
		336	{
		337	end_thread ();
		338	cur--;
		339	}
		340
		341	while (started > wanted)
225	{	342	{
226	poll_wait ();	343	poll_wait ();
227	poll_cb ();	344	poll_cb ();
228	}	345	}
229	}	346	}
230		347
231	static void	348	static void create_pipe ()
232	end_thread (void)
233	{	349	{
234	aio_req req;	350	if (pipe (respipe))
235	New (0, req, 1, aio_cb);	351	croak ("unable to initialize result pipe");
236	req->type = REQ_QUIT;
237		352
238	send_req (req);	353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
239	}	354	croak ("cannot set result pipe to nonblocking mode");
240		355
241		356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
242	static void min_parallel (int nthreads)	357	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	}	358	}
313		359
314	/*****************************************************************************/	360	/*****************************************************************************/
315	/* work around various missing functions */	361	/* work around various missing functions */
316		362
…		…
321	/*	367	/*
322	* make our pread/pwrite safe against themselves, but not against	368	* make our pread/pwrite safe against themselves, but not against
323	* normal read/write by using a mutex. slows down execution a lot,	369	* normal read/write by using a mutex. slows down execution a lot,
324	* but that's your problem, not mine.	370	* but that's your problem, not mine.
325	*/	371	*/
326	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
327		373
328	static ssize_t	374	static ssize_t
329	pread (int fd, void *buf, size_t count, off_t offset)	375	pread (int fd, void *buf, size_t count, off_t offset)
330	{	376	{
331	ssize_t res;	377	ssize_t res;
332	off_t ooffset;	378	off_t ooffset;
333		379
334	pthread_mutex_lock (&iolock);	380	pthread_mutex_lock (&preadwritelock);
335	ooffset = lseek (fd, 0, SEEK_CUR);	381	ooffset = lseek (fd, 0, SEEK_CUR);
336	lseek (fd, offset, SEEK_SET);	382	lseek (fd, offset, SEEK_SET);
337	res = read (fd, buf, count);	383	res = read (fd, buf, count);
338	lseek (fd, ooffset, SEEK_SET);	384	lseek (fd, ooffset, SEEK_SET);
339	pthread_mutex_unlock (&iolock);	385	pthread_mutex_unlock (&preadwritelock);
340		386
341	return res;	387	return res;
342	}	388	}
343		389
344	static ssize_t	390	static ssize_t
345	pwrite (int fd, void *buf, size_t count, off_t offset)	391	pwrite (int fd, void *buf, size_t count, off_t offset)
346	{	392	{
347	ssize_t res;	393	ssize_t res;
348	off_t ooffset;	394	off_t ooffset;
349		395
350	pthread_mutex_lock (&iolock);	396	pthread_mutex_lock (&preadwritelock);
351	ooffset = lseek (fd, 0, SEEK_CUR);	397	ooffset = lseek (fd, 0, SEEK_CUR);
352	lseek (fd, offset, SEEK_SET);	398	lseek (fd, offset, SEEK_SET);
353	res = write (fd, buf, count);	399	res = write (fd, buf, count);
354	lseek (fd, offset, SEEK_SET);	400	lseek (fd, offset, SEEK_SET);
355	pthread_mutex_unlock (&iolock);	401	pthread_mutex_unlock (&preadwritelock);
356		402
357	return res;	403	return res;
358	}	404	}
359	#endif	405	#endif
360		406
…		…
363	#endif	409	#endif
364		410
365	#if !HAVE_READAHEAD	411	#if !HAVE_READAHEAD
366	# define readahead aio_readahead	412	# define readahead aio_readahead
367		413
368	static char readahead_buf[4096];
369
370	static ssize_t	414	static ssize_t
371	readahead (int fd, off_t offset, size_t count)	415	readahead (int fd, off_t offset, size_t count)
372	{	416	{
		417	char readahead_buf[4096];
		418
373	while (count > 0)	419	while (count > 0)
374	{	420	{
375	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
376		422
377	pread (fd, readahead_buf, len, offset);	423	pread (fd, readahead_buf, len, offset);
…		…
380	}	426	}
381		427
382	errno = 0;	428	errno = 0;
383	}	429	}
384	#endif	430	#endif
		431
		432	#if !HAVE_READDIR_R
		433	# define readdir_r aio_readdir_r
		434
		435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		436
		437	static int
		438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		439	{
		440	struct dirent *e;
		441	int errorno;
		442
		443	pthread_mutex_lock (&readdirlock);
		444
		445	e = readdir (dirp);
		446	errorno = errno;
		447
		448	if (e)
		449	{
		450	*res = ent;
		451	strcpy (ent->d_name, e->d_name);
		452	}
		453	else
		454	*res = 0;
		455
		456	pthread_mutex_unlock (&readdirlock);
		457
		458	errno = errorno;
		459	return e ? 0 : -1;
		460	}
		461	#endif
		462
		463	/* sendfile always needs emulation */
		464	static ssize_t
		465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		466	{
		467	ssize_t res;
		468
		469	if (!count)
		470	return 0;
		471
		472	#if HAVE_SENDFILE
		473	# if __linux
		474	res = sendfile (ofd, ifd, &offset, count);
		475
		476	# elif __freebsd
		477	/*
		478	* Of course, the freebsd sendfile is a dire hack with no thoughts
		479	* wasted on making it similar to other I/O functions.
		480	*/
		481	{
		482	off_t sbytes;
		483	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		484
		485	if (res < 0 && sbytes)
		486	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		487	res = sbytes;
		488	}
		489
		490	# elif __hpux
		491	res = sendfile (ofd, ifd, offset, count, 0, 0);
		492
		493	# elif __solaris
		494	{
		495	struct sendfilevec vec;
		496	size_t sbytes;
		497
		498	vec.sfv_fd = ifd;
		499	vec.sfv_flag = 0;
		500	vec.sfv_off = offset;
		501	vec.sfv_len = count;
		502
		503	res = sendfilev (ofd, &vec, 1, &sbytes);
		504
		505	if (res < 0 && sbytes)
		506	res = sbytes;
		507	}
		508
		509	# endif
		510	#else
		511	res = -1;
		512	errno = ENOSYS;
		513	#endif
		514
		515	if (res < 0
		516	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		517	#if __solaris
		518	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		519	#endif
		520	)
		521	)
		522	{
		523	/* emulate sendfile. this is a major pain in the ass */
		524	char buf[4096];
		525	res = 0;
		526
		527	while (count)
		528	{
		529	ssize_t cnt;
		530
		531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		532
		533	if (cnt <= 0)
		534	{
		535	if (cnt && !res) res = -1;
		536	break;
		537	}
		538
		539	cnt = write (ofd, buf, cnt);
		540
		541	if (cnt <= 0)
		542	{
		543	if (cnt && !res) res = -1;
		544	break;
		545	}
		546
		547	offset += cnt;
		548	res += cnt;
		549	count -= cnt;
		550	}
		551	}
		552
		553	return res;
		554	}
		555
		556	/* read a full directory */
		557	static int
		558	scandir_ (const char path, void *namesp)
		559	{
		560	DIR *dirp = opendir (path);
		561	union
		562	{
		563	struct dirent d;
		564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		565	} u;
		566	struct dirent *entp;
		567	char name, names;
		568	int memlen = 4096;
		569	int memofs = 0;
		570	int res = 0;
		571	int errorno;
		572
		573	if (!dirp)
		574	return -1;
		575
		576	names = malloc (memlen);
		577
		578	for (;;)
		579	{
		580	errno = 0, readdir_r (dirp, &u.d, &entp);
		581
		582	if (!entp)
		583	break;
		584
		585	name = entp->d_name;
		586
		587	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		588	{
		589	int len = strlen (name) + 1;
		590
		591	res++;
		592
		593	while (memofs + len > memlen)
		594	{
		595	memlen *= 2;
		596	names = realloc (names, memlen);
		597	if (!names)
		598	break;
		599	}
		600
		601	memcpy (names + memofs, name, len);
		602	memofs += len;
		603	}
		604	}
		605
		606	errorno = errno;
		607	closedir (dirp);
		608
		609	if (errorno)
		610	{
		611	free (names);
		612	errno = errorno;
		613	res = -1;
		614	}
		615
		616	namesp = (void )names;
		617	return res;
		618	}
385		619
386	/*****************************************************************************/	620	/*****************************************************************************/
387		621
388	static void *	622	static void *
389	aio_proc (void *thr_arg)	623	aio_proc (void *thr_arg)
…		…
421	{	655	{
422	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	656	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;	657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
424		658
425	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
426		661
427	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
428	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
429	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
430		665
…		…
434	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
435	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
436		671
437	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
438	case REQ_FSYNC: req->result = fsync (req->fd); break;	673	case REQ_FSYNC: req->result = fsync (req->fd); break;
		674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
439		675
440	case REQ_QUIT:	676	case REQ_QUIT:
441	break;	677	break;
442		678
443	default:	679	default:
…		…
467	pthread_mutex_unlock (&reslock);	703	pthread_mutex_unlock (&reslock);
468	}	704	}
469	while (type != REQ_QUIT);	705	while (type != REQ_QUIT);
470		706
471	return 0;	707	return 0;
		708	}
		709
		710	/*****************************************************************************/
		711
		712	static void atfork_prepare (void)
		713	{
		714	pthread_mutex_lock (&reqlock);
		715	pthread_mutex_lock (&reslock);
		716	#if !HAVE_PREADWRITE
		717	pthread_mutex_lock (&preadwritelock);
		718	#endif
		719	#if !HAVE_READDIR_R
		720	pthread_mutex_lock (&readdirlock);
		721	#endif
		722	}
		723
		724	static void atfork_parent (void)
		725	{
		726	#if !HAVE_READDIR_R
		727	pthread_mutex_unlock (&readdirlock);
		728	#endif
		729	#if !HAVE_PREADWRITE
		730	pthread_mutex_unlock (&preadwritelock);
		731	#endif
		732	pthread_mutex_unlock (&reslock);
		733	pthread_mutex_unlock (&reqlock);
		734	}
		735
		736	static void atfork_child (void)
		737	{
		738	aio_req prv;
		739
		740	started = 0;
		741
		742	while (reqs)
		743	{
		744	prv = reqs;
		745	reqs = prv->next;
		746	free_req (prv);
		747	}
		748
		749	reqs = reqe = 0;
		750
		751	while (ress)
		752	{
		753	prv = ress;
		754	ress = prv->next;
		755	free_req (prv);
		756	}
		757
		758	ress = rese = 0;
		759
		760	close (respipe [0]);
		761	close (respipe [1]);
		762	create_pipe ();
		763
		764	atfork_parent ();
472	}	765	}
473		766
474	#define dREQ \	767	#define dREQ \
475	aio_req req; \	768	aio_req req; \
476	\	769	\
…		…
479	\	772	\
480	Newz (0, req, 1, aio_cb); \	773	Newz (0, req, 1, aio_cb); \
481	if (!req) \	774	if (!req) \
482	croak ("out of memory during aio_req allocation"); \	775	croak ("out of memory during aio_req allocation"); \
483	\	776	\
484	req->callback = SvREFCNT_inc (callback);	777	req->callback = newSVsv (callback);
485		778
486	MODULE = IO::AIO PACKAGE = IO::AIO	779	MODULE = IO::AIO PACKAGE = IO::AIO
487		780
488	PROTOTYPES: ENABLE	781	PROTOTYPES: ENABLE
489		782
490	BOOT:	783	BOOT:
491	{	784	{
492	if (pipe (respipe))	785	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);	786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
502	}	787	}
503		788
504	void	789	void
505	min_parallel(nthreads)	790	min_parallel(nthreads)
…		…
561		846
562	void	847	void
563	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
564	SV * fh	849	SV * fh
565	UV offset	850	UV offset
566	IV length	851	UV length
567	SV * data	852	SV * data
568	IV dataoffset	853	UV dataoffset
569	SV * callback	854	SV * callback
570	ALIAS:	855	ALIAS:
571	aio_read = REQ_READ	856	aio_read = REQ_READ
572	aio_write = REQ_WRITE	857	aio_write = REQ_WRITE
573	PROTOTYPE: $$$$$;$	858	PROTOTYPE: $$$$$;$
…		…
610	: IoOFP (sv_2io (fh)));	895	: IoOFP (sv_2io (fh)));
611	req->offset = offset;	896	req->offset = offset;
612	req->length = length;	897	req->length = length;
613	req->data = SvREFCNT_inc (data);	898	req->data = SvREFCNT_inc (data);
614	req->dataptr = (char *)svptr + dataoffset;	899	req->dataptr = (char *)svptr + dataoffset;
615	req->callback = SvREFCNT_inc (callback);	900
		901	if (!SvREADONLY (data))
		902	{
		903	SvREADONLY_on (data);
		904	req->data2ptr = (void *)data;
		905	}
616		906
617	send_req (req);	907	send_req (req);
618	}	908	}
		909	}
		910
		911	void
		912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		913	SV * out_fh
		914	SV * in_fh
		915	UV in_offset
		916	UV length
		917	SV * callback
		918	PROTOTYPE: $$$$;$
		919	CODE:
		920	{
		921	dREQ;
		922
		923	req->type = REQ_SENDFILE;
		924	req->fh = newSVsv (out_fh);
		925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		926	req->fh2 = newSVsv (in_fh);
		927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		928	req->offset = in_offset;
		929	req->length = length;
		930
		931	send_req (req);
619	}	932	}
620		933
621	void	934	void
622	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
623	SV * fh	936	SV * fh
…		…
649	{	962	{
650	dREQ;	963	dREQ;
651		964
652	New (0, req->statdata, 1, Stat_t);	965	New (0, req->statdata, 1, Stat_t);
653	if (!req->statdata)	966	if (!req->statdata)
		967	{
		968	free_req (req);
654	croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");	969	croak ("out of memory during aio_req->statdata allocation");
		970	}
655		971
656	if (SvPOK (fh_or_path))	972	if (SvPOK (fh_or_path))
657	{	973	{
658	req->type = ix;	974	req->type = ix;
659	req->data = newSVsv (fh_or_path);	975	req->data = newSVsv (fh_or_path);
…		…
704		1020
705	send_req (req);	1021	send_req (req);
706	}	1022	}
707		1023
708	void	1024	void
		1025	aio_readdir(pathname,callback=&PL_sv_undef)
		1026	SV * pathname
		1027	SV * callback
		1028	CODE:
		1029	{
		1030	dREQ;
		1031
		1032	req->type = REQ_READDIR;
		1033	req->data = newSVsv (pathname);
		1034	req->dataptr = SvPVbyte_nolen (req->data);
		1035
		1036	send_req (req);
		1037	}
		1038
		1039	void
709	flush()	1040	flush()
710	PROTOTYPE:	1041	PROTOTYPE:
711	CODE:	1042	CODE:
712	while (nreqs)	1043	while (nreqs)
713	{	1044	{

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC vs. Revision 1.39 by root, Mon Feb 6 23:54:12 2006 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 1.39 by root, Mon Feb 6 23:54:12 2006 UTC