[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 1.39 by root, Mon Feb 6 23:54:12 2006 UTC

…		…
		1	#define _REENTRANT 1
		2	#include <errno.h>
		3
1	#include "EXTERN.h"	4	#include "EXTERN.h"
2	#include "perl.h"	5	#include "perl.h"
3	#include "XSUB.h"	6	#include "XSUB.h"
4		7
5	#include "autoconf/config.h"	8	#include "autoconf/config.h"
6		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
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		35
20	#include <pthread.h>	36	/* used for struct dirent, AIX doesn't provide it */
21		37	#ifndef NAME_MAX
22	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	# define NAME_MAX 4096
23	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	#endif
24	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
25		40
26	#if __ia64	41	#if __ia64
27	# define STACKSIZE 65536	42	# define STACKSIZE 65536
28	#else	43	#else
29	# define STACKSIZE 4096	44	# define STACKSIZE 8192
30	#endif	45	#endif
31		46
32	enum {	47	enum {
33	REQ_QUIT,	48	REQ_QUIT,
34	REQ_OPEN, REQ_CLOSE,	49	REQ_OPEN, REQ_CLOSE,
35	REQ_READ, REQ_WRITE, REQ_READAHEAD,	50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		51	REQ_SENDFILE,
36	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37	REQ_FSYNC, REQ_FDATASYNC,	53	REQ_FSYNC, REQ_FDATASYNC,
		54	REQ_UNLINK, REQ_RMDIR,
		55	REQ_READDIR,
		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;
52	void *dataptr;	72	SV fh, fh2;
		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;
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		89
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	90	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	91	static volatile aio_req ress, rese; /* queue start, queue end */
71		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	}
		115
72	static void	116	static void
73	poll_wait ()	117	poll_wait ()
74	{	118	{
75	if (nreqs && !ress)	119	if (nreqs && !ress)
76	{	120	{
…		…
85	static int	129	static int
86	poll_cb ()	130	poll_cb ()
87	{	131	{
88	dSP;	132	dSP;
89	int count = 0;	133	int count = 0;
		134	int do_croak = 0;
90	aio_req req, prv;	135	aio_req req;
91		136
		137	for (;;)
		138	{
92	pthread_mutex_lock (&reslock);	139	pthread_mutex_lock (&reslock);
		140	req = ress;
93		141
94	{	142	if (req)
		143	{
		144	ress = req->next;
		145
		146	if (!ress)
		147	{
95	/* read any signals sent by the worker threads */	148	/* read any signals sent by the worker threads */
96	char buf [32];	149	char buf [32];
97	while (read (respipe [0], buf, 32) > 0)	150	while (read (respipe [0], buf, 32) == 32)
		151	;
		152
		153	rese = 0;
		154	}
98	;	155	}
99	}
100		156
101	req = ress;
102	ress = rese = 0;
103
104	pthread_mutex_unlock (&reslock);	157	pthread_mutex_unlock (&reslock);
105		158
106	while (req)	159	if (!req)
107	{	160	break;
		161
108	nreqs--;	162	nreqs--;
109		163
110	if (req->type == REQ_QUIT)	164	if (req->type == REQ_QUIT)
111	started--;	165	started--;
112	else	166	else
113	{	167	{
114	int errorno = errno;	168	int errorno = errno;
115	errno = req->errorno;	169	errno = req->errorno;
116		170
117	if (req->type == REQ_READ)	171	if (req->type == REQ_READ)
118	SvCUR_set (req->data, req->dataoffset	172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
119	+ req->result > 0 ? req->result : 0);
120		173
		174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		175	SvREADONLY_off (req->data);
		176
121	if (req->data)	177	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	{	178	{
129	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130	PL_laststatval = req->result;	180	PL_laststatval = req->result;
131	PL_statcache = *(req->statdata);	181	PL_statcache = *(req->statdata);
132
133	Safefree (req->statdata);
134	}	182	}
135		183
136	ENTER;	184	ENTER;
137	PUSHMARK (SP);	185	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));
139		186
140	if (req->type == REQ_OPEN)	187	if (req->type == REQ_READDIR)
141	{	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	{
142	/* convert fd to fh */	216	/* convert fd to fh */
143	SV *fh;	217	SV *fh;
144		218
145	PUTBACK;	219	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;	221	SPAGAIN;
148		222
149	fh = SvREFCNT_inc (POPs);	223	fh = SvREFCNT_inc (POPs);
150		224
151	PUSHMARK (SP);	225	PUSHMARK (SP);
152	XPUSHs (sv_2mortal (fh));	226	XPUSHs (sv_2mortal (fh));
		227	}
153	}	228	}
154		229
155	if (SvOK (req->callback))	230	if (SvOK (req->callback))
156	{	231	{
157	PUTBACK;	232	PUTBACK;
158	call_sv (req->callback, G_VOID \| G_EVAL);	233	call_sv (req->callback, G_VOID \| G_EVAL);
159	SPAGAIN;	234	SPAGAIN;
		235
		236	if (SvTRUE (ERRSV))
		237	{
		238	free_req (req);
		239	croak (0);
		240	}
160	}	241	}
161		242
162	LEAVE;	243	LEAVE;
163
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166		244
167	errno = errorno;	245	errno = errorno;
168	count++;	246	count++;
169	}	247	}
170		248
171	prv = req;	249	free_req (req);
172	req = req->next;
173	Safefree (prv);
174
175	/* TODO: croak on errors? */
176	}	250	}
177		251
178	return count;	252	return count;
179	}	253	}
180		254
…		…
201	}	275	}
202		276
203	static void	277	static void
204	send_req (aio_req req)	278	send_req (aio_req req)
205	{	279	{
		280	while (started < wanted && nreqs >= started)
		281	start_thread ();
		282
206	nreqs++;	283	nreqs++;
207		284
208	pthread_mutex_lock (&reqlock);	285	pthread_mutex_lock (&reqlock);
209		286
210	req->next = 0;	287	req->next = 0;
…		…
218	reqe = reqs = req;	295	reqe = reqs = req;
219		296
220	pthread_cond_signal (&reqwait);	297	pthread_cond_signal (&reqwait);
221	pthread_mutex_unlock (&reqlock);	298	pthread_mutex_unlock (&reqlock);
222		299
223	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)
224	{	342	{
225	poll_wait ();	343	poll_wait ();
226	poll_cb ();	344	poll_cb ();
227	}	345	}
228	}	346	}
229		347
230	static void	348	static void create_pipe ()
231	end_thread (void)
232	{	349	{
233	aio_req req;	350	if (pipe (respipe))
234	New (0, req, 1, aio_cb);	351	croak ("unable to initialize result pipe");
235	req->type = REQ_QUIT;
236		352
237	send_req (req);	353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
238	}	354	croak ("cannot set result pipe to nonblocking mode");
239		355
		356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		357	croak ("cannot set result pipe to nonblocking mode");
		358	}
		359
		360	/*****************************************************************************/
240	/* work around various missing functions */	361	/* work around various missing functions */
241		362
242	#if !HAVE_PREADWRITE	363	#if !HAVE_PREADWRITE
243	# define pread aio_pread	364	# define pread aio_pread
244	# define pwrite aio_pwrite	365	# define pwrite aio_pwrite
…		…
246	/*	367	/*
247	* make our pread/pwrite safe against themselves, but not against	368	* make our pread/pwrite safe against themselves, but not against
248	* 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,
249	* but that's your problem, not mine.	370	* but that's your problem, not mine.
250	*/	371	*/
251	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
252		373
253	static ssize_t	374	static ssize_t
254	pread (int fd, void *buf, size_t count, off_t offset)	375	pread (int fd, void *buf, size_t count, off_t offset)
255	{	376	{
256	ssize_t res;	377	ssize_t res;
257	off_t ooffset;	378	off_t ooffset;
258		379
259	pthread_mutex_lock (&iolock);	380	pthread_mutex_lock (&preadwritelock);
260	ooffset = lseek (fd, 0, SEEK_CUR);	381	ooffset = lseek (fd, 0, SEEK_CUR);
261	lseek (fd, offset, SEEK_SET);	382	lseek (fd, offset, SEEK_SET);
262	res = read (fd, buf, count);	383	res = read (fd, buf, count);
263	lseek (fd, ooffset, SEEK_SET);	384	lseek (fd, ooffset, SEEK_SET);
264	pthread_mutex_unlock (&iolock);	385	pthread_mutex_unlock (&preadwritelock);
265		386
266	return res;	387	return res;
267	}	388	}
268		389
269	static ssize_t	390	static ssize_t
270	pwrite (int fd, void *buf, size_t count, off_t offset)	391	pwrite (int fd, void *buf, size_t count, off_t offset)
271	{	392	{
272	ssize_t res;	393	ssize_t res;
273	off_t ooffset;	394	off_t ooffset;
274		395
275	pthread_mutex_lock (&iolock);	396	pthread_mutex_lock (&preadwritelock);
276	ooffset = lseek (fd, 0, SEEK_CUR);	397	ooffset = lseek (fd, 0, SEEK_CUR);
277	lseek (fd, offset, SEEK_SET);	398	lseek (fd, offset, SEEK_SET);
278	res = write (fd, buf, count);	399	res = write (fd, buf, count);
279	lseek (fd, offset, SEEK_SET);	400	lseek (fd, offset, SEEK_SET);
280	pthread_mutex_unlock (&iolock);	401	pthread_mutex_unlock (&preadwritelock);
281		402
282	return res;	403	return res;
283	}	404	}
284	#endif	405	#endif
285		406
…		…
288	#endif	409	#endif
289		410
290	#if !HAVE_READAHEAD	411	#if !HAVE_READAHEAD
291	# define readahead aio_readahead	412	# define readahead aio_readahead
292		413
293	static char readahead_buf[4096];
294
295	static ssize_t	414	static ssize_t
296	readahead (int fd, off_t offset, size_t count)	415	readahead (int fd, off_t offset, size_t count)
297	{	416	{
		417	char readahead_buf[4096];
		418
298	while (count > 0)	419	while (count > 0)
299	{	420	{
300	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301		422
302	pread (fd, readahead_buf, len, offset);	423	pread (fd, readahead_buf, len, offset);
…		…
305	}	426	}
306		427
307	errno = 0;	428	errno = 0;
308	}	429	}
309	#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	}
		619
		620	/*****************************************************************************/
310		621
311	static void *	622	static void *
312	aio_proc (void *thr_arg)	623	aio_proc (void *thr_arg)
313	{	624	{
314	aio_req req;	625	aio_req req;
…		…
344	{	655	{
345	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;
346	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;
347		658
348	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;
349		661
350	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353		665
354	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355	case REQ_CLOSE: req->result = close (req->fd); break;	667	case REQ_CLOSE: req->result = close (req->fd); break;
356	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
357		671
358	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359	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;
360		675
361	case REQ_QUIT:	676	case REQ_QUIT:
362	break;	677	break;
363		678
364	default:	679	default:
…		…
390	while (type != REQ_QUIT);	705	while (type != REQ_QUIT);
391		706
392	return 0;	707	return 0;
393	}	708	}
394		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 ();
		765	}
		766
		767	#define dREQ \
		768	aio_req req; \
		769	\
		770	if (SvOK (callback) && !SvROK (callback)) \
		771	croak ("clalback must be undef or of reference type"); \
		772	\
		773	Newz (0, req, 1, aio_cb); \
		774	if (!req) \
		775	croak ("out of memory during aio_req allocation"); \
		776	\
		777	req->callback = newSVsv (callback);
		778
395	MODULE = IO::AIO PACKAGE = IO::AIO	779	MODULE = IO::AIO PACKAGE = IO::AIO
396		780
397	PROTOTYPES: ENABLE	781	PROTOTYPES: ENABLE
398		782
399	BOOT:	783	BOOT:
400	{	784	{
401	if (pipe (respipe))	785	create_pipe ();
402	croak ("unable to initialize result pipe");	786	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	}	787	}
410		788
411	void	789	void
412	min_parallel(nthreads)	790	min_parallel(nthreads)
413	int nthreads	791	int nthreads
414	PROTOTYPE: $	792	PROTOTYPE: $
415	CODE:
416	while (nthreads > started)
417	start_thread ();
418		793
419	void	794	void
420	max_parallel(nthreads)	795	max_parallel(nthreads)
421	int nthreads	796	int nthreads
422	PROTOTYPE: $	797	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		798
439	int	799	int
440	max_outstanding(nreqs)	800	max_outstanding(nreqs)
441	int nreqs	801	int nreqs
442	PROTOTYPE: $	802	PROTOTYPE: $
…		…
451	int mode	811	int mode
452	SV * callback	812	SV * callback
453	PROTOTYPE: $$$;$	813	PROTOTYPE: $$$;$
454	CODE:	814	CODE:
455	{	815	{
456	aio_req req;	816	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		817
463	req->type = REQ_OPEN;	818	req->type = REQ_OPEN;
464	req->data = newSVsv (pathname);	819	req->data = newSVsv (pathname);
465	req->dataptr = SvPV_nolen (req->data);	820	req->dataptr = SvPVbyte_nolen (req->data);
466	req->fd = flags;	821	req->fd = flags;
467	req->mode = mode;	822	req->mode = mode;
468	req->callback = SvREFCNT_inc (callback);
469		823
470	send_req (req);	824	send_req (req);
471	}	825	}
472		826
473	void	827	void
…		…
479	aio_close = REQ_CLOSE	833	aio_close = REQ_CLOSE
480	aio_fsync = REQ_FSYNC	834	aio_fsync = REQ_FSYNC
481	aio_fdatasync = REQ_FDATASYNC	835	aio_fdatasync = REQ_FDATASYNC
482	CODE:	836	CODE:
483	{	837	{
484	aio_req req;	838	dREQ;
485
486	Newz (0, req, 1, aio_cb);
487
488	if (!req)
489	croak ("out of memory during aio_req allocation");
490		839
491	req->type = ix;	840	req->type = ix;
492	req->fh = newSVsv (fh);	841	req->fh = newSVsv (fh);
493	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494	req->callback = SvREFCNT_inc (callback);
495		843
496	send_req (req);	844	send_req (req);
497	}	845	}
498		846
499	void	847	void
500	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501	SV * fh	849	SV * fh
502	UV offset	850	UV offset
503	IV length	851	UV length
504	SV * data	852	SV * data
505	IV dataoffset	853	UV dataoffset
506	SV * callback	854	SV * callback
507	ALIAS:	855	ALIAS:
508	aio_read = REQ_READ	856	aio_read = REQ_READ
509	aio_write = REQ_WRITE	857	aio_write = REQ_WRITE
510	PROTOTYPE: $$$$$;$	858	PROTOTYPE: $$$$$;$
511	CODE:	859	CODE:
512	{	860	{
513	aio_req req;	861	aio_req req;
514	STRLEN svlen;	862	STRLEN svlen;
515	char *svptr = SvPV (data, svlen);	863	char *svptr = SvPVbyte (data, svlen);
516		864
517	SvUPGRADE (data, SVt_PV);	865	SvUPGRADE (data, SVt_PV);
518	SvPOK_on (data);	866	SvPOK_on (data);
519		867
520	if (dataoffset < 0)	868	if (dataoffset < 0)
…		…
536	}	884	}
537		885
538	if (length < 0)	886	if (length < 0)
539	croak ("length must not be negative");	887	croak ("length must not be negative");
540		888
541	Newz (0, req, 1, aio_cb);	889	{
		890	dREQ;
542		891
543	if (!req)
544	croak ("out of memory during aio_req allocation");
545
546	req->type = ix;	892	req->type = ix;
547	req->fh = newSVsv (fh);	893	req->fh = newSVsv (fh);
548	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	894	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549	: IoOFP (sv_2io (fh)));	895	: IoOFP (sv_2io (fh)));
550	req->offset = offset;	896	req->offset = offset;
		897	req->length = length;
		898	req->data = SvREFCNT_inc (data);
		899	req->dataptr = (char *)svptr + dataoffset;
		900
		901	if (!SvREADONLY (data))
		902	{
		903	SvREADONLY_on (data);
		904	req->data2ptr = (void *)data;
		905	}
		906
		907	send_req (req);
		908	}
		909	}
		910
		911	void
		912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		913	SV * out_fh
		914	SV * in_fh
		915	UV in_offset
		916	UV length
		917	SV * callback
		918	PROTOTYPE: $$$$;$
		919	CODE:
		920	{
		921	dREQ;
		922
		923	req->type = REQ_SENDFILE;
		924	req->fh = newSVsv (out_fh);
		925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		926	req->fh2 = newSVsv (in_fh);
		927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		928	req->offset = in_offset;
551	req->length = length;	929	req->length = length;
552	req->data = SvREFCNT_inc (data);
553	req->dataptr = (char *)svptr + dataoffset;
554	req->callback = SvREFCNT_inc (callback);
555		930
556	send_req (req);	931	send_req (req);
557	}	932	}
558		933
559	void	934	void
…		…
563	IV length	938	IV length
564	SV * callback	939	SV * callback
565	PROTOTYPE: $$$;$	940	PROTOTYPE: $$$;$
566	CODE:	941	CODE:
567	{	942	{
568	aio_req req;	943	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		944
578	req->type = REQ_READAHEAD;	945	req->type = REQ_READAHEAD;
579	req->fh = newSVsv (fh);	946	req->fh = newSVsv (fh);
580	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581	req->offset = offset;	948	req->offset = offset;
582	req->length = length;	949	req->length = length;
583	req->callback = SvREFCNT_inc (callback);
584		950
585	send_req (req);	951	send_req (req);
586	}	952	}
587		953
588	void	954	void
…		…
592	ALIAS:	958	ALIAS:
593	aio_stat = REQ_STAT	959	aio_stat = REQ_STAT
594	aio_lstat = REQ_LSTAT	960	aio_lstat = REQ_LSTAT
595	CODE:	961	CODE:
596	{	962	{
597	aio_req req;	963	dREQ;
598
599	Newz (0, req, 1, aio_cb);
600
601	if (!req)
602	croak ("out of memory during aio_req allocation");
603		964
604	New (0, req->statdata, 1, Stat_t);	965	New (0, req->statdata, 1, Stat_t);
605
606	if (!req->statdata)	966	if (!req->statdata)
		967	{
		968	free_req (req);
607	croak ("out of memory during aio_req->statdata allocation");	969	croak ("out of memory during aio_req->statdata allocation");
		970	}
608		971
609	if (SvPOK (fh_or_path))	972	if (SvPOK (fh_or_path))
610	{	973	{
611	req->type = ix;	974	req->type = ix;
612	req->data = newSVsv (fh_or_path);	975	req->data = newSVsv (fh_or_path);
613	req->dataptr = SvPV_nolen (req->data);	976	req->dataptr = SvPVbyte_nolen (req->data);
614	}	977	}
615	else	978	else
616	{	979	{
617	req->type = REQ_FSTAT;	980	req->type = REQ_FSTAT;
618	req->fh = newSVsv (fh_or_path);	981	req->fh = newSVsv (fh_or_path);
619	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620	}	983	}
621		984
622	req->callback = SvREFCNT_inc (callback);
623
624	send_req (req);	985	send_req (req);
625	}	986	}
626		987
627	void	988	void
628	aio_unlink(pathname,callback=&PL_sv_undef)	989	aio_unlink(pathname,callback=&PL_sv_undef)
629	SV * pathname	990	SV * pathname
630	SV * callback	991	SV * callback
		992	ALIAS:
		993	aio_unlink = REQ_UNLINK
		994	aio_rmdir = REQ_RMDIR
631	CODE:	995	CODE:
632	{	996	{
633	aio_req req;	997	dREQ;
634		998
635	Newz (0, req, 1, aio_cb);	999	req->type = ix;
		1000	req->data = newSVsv (pathname);
		1001	req->dataptr = SvPVbyte_nolen (req->data);
636		1002
637	if (!req)	1003	send_req (req);
638	croak ("out of memory during aio_req allocation");	1004	}
		1005
		1006	void
		1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
		1008	SV * oldpath
		1009	SV * newpath
		1010	SV * callback
		1011	CODE:
		1012	{
		1013	dREQ;
639		1014
640	req->type = REQ_UNLINK;	1015	req->type = REQ_SYMLINK;
		1016	req->fh = newSVsv (oldpath);
		1017	req->data2ptr = SvPVbyte_nolen (req->fh);
		1018	req->data = newSVsv (newpath);
		1019	req->dataptr = SvPVbyte_nolen (req->data);
		1020
		1021	send_req (req);
		1022	}
		1023
		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;
641	req->data = newSVsv (pathname);	1033	req->data = newSVsv (pathname);
642	req->dataptr = SvPV_nolen (req->data);	1034	req->dataptr = SvPVbyte_nolen (req->data);
643	req->callback = SvREFCNT_inc (callback);
644		1035
645	send_req (req);	1036	send_req (req);
646	}	1037	}
647		1038
648	void	1039	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 1.39 by root, Mon Feb 6 23:54:12 2006 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 1.39 by root, Mon Feb 6 23:54:12 2006 UTC