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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC

…		…
1	#define _XOPEN_SOURCE 500	1	#define _REENTRANT 1
		2	#include <errno.h>
2		3
3	#include "EXTERN.h"	4	#include "EXTERN.h"
4	#include "perl.h"	5	#include "perl.h"
5	#include "XSUB.h"	6	#include "XSUB.h"
6		7
		8	#include "autoconf/config.h"
		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>
		20
		21	#if HAVE_SENDFILE
14	#if __linux	22	# if __linux
		23	# include <sys/sendfile.h>
		24	# elif __freebsd
15	#include <sys/syscall.h>	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
16	#endif	33	# endif
		34	#endif
17		35
18	#include <pthread.h>	36	/* used for struct dirent, AIX doesn't provide it */
19		37	#ifndef NAME_MAX
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	# define NAME_MAX 4096
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	#endif
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
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, REQ_UNLINK,	52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,	53	REQ_FSYNC, REQ_FDATASYNC,
		54	REQ_UNLINK, REQ_RMDIR,
		55	REQ_READDIR,
		56	REQ_SYMLINK,
36	};	57	};
37		58
38	typedef struct aio_cb {	59	typedef struct aio_cb {
39	struct aio_cb *volatile next;	60	struct aio_cb *volatile next;
40		61
41	int type;	62	int type;
42		63
		64	/* should receive a cleanup, with unions */
43	int fd;	65	int fd, fd2;
44	off_t offset;	66	off_t offset;
45	size_t length;	67	size_t length;
46	ssize_t result;	68	ssize_t result;
47	mode_t mode; /* open */	69	mode_t mode; /* open */
48	int errorno;	70	int errorno;
49	SV data, callback, *fh;	71	SV data, callback;
50	void *dataptr;	72	SV fh, fh2;
		73	void dataptr, data2ptr;
51	STRLEN dataoffset;	74	STRLEN dataoffset;
52		75
53	Stat_t *statdata;	76	Stat_t *statdata;
54	} aio_cb;	77	} aio_cb;
55		78
56	typedef aio_cb *aio_req;	79	typedef aio_cb *aio_req;
57		80
58	static int started;	81	static int started, wanted;
59	static volatile int nreqs;	82	static volatile int nreqs;
60	static int max_outstanding = 1<<30;	83	static int max_outstanding = 1<<30;
61	static int respipe [2];	84	static int respipe [2];
62		85
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		89
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	90	static volatile aio_req reqs, reqe; /* queue start, queue end */
68	static volatile aio_req ress, rese; /* queue start, queue end */	91	static volatile aio_req ress, rese; /* queue start, queue end */
69		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
70	static void	116	static void
71	poll_wait ()	117	poll_wait ()
72	{	118	{
73	if (nreqs && !ress)	119	if (nreqs && !ress)
74	{	120	{
…		…
83	static int	129	static int
84	poll_cb ()	130	poll_cb ()
85	{	131	{
86	dSP;	132	dSP;
87	int count = 0;	133	int count = 0;
		134	int do_croak = 0;
88	aio_req req, prv;	135	aio_req req;
89		136
		137	for (;;)
		138	{
90	pthread_mutex_lock (&reslock);	139	pthread_mutex_lock (&reslock);
		140	req = ress;
91		141
92	{	142	if (req)
		143	{
		144	ress = req->next;
		145
		146	if (!ress)
		147	{
93	/* read any signals sent by the worker threads */	148	/* read any signals sent by the worker threads */
94	char buf [32];	149	char buf [32];
95	while (read (respipe [0], buf, 32) > 0)	150	while (read (respipe [0], buf, 32) == 32)
		151	;
		152
		153	rese = 0;
		154	}
96	;	155	}
97	}
98		156
99	req = ress;
100	ress = rese = 0;
101
102	pthread_mutex_unlock (&reslock);	157	pthread_mutex_unlock (&reslock);
103		158
104	while (req)	159	if (!req)
105	{	160	break;
		161
106	nreqs--;	162	nreqs--;
107		163
108	if (req->type == REQ_QUIT)	164	if (req->type == REQ_QUIT)
109	started--;	165	started--;
110	else	166	else
111	{	167	{
112	int errorno = errno;	168	int errorno = errno;
113	errno = req->errorno;	169	errno = req->errorno;
114		170
115	if (req->type == REQ_READ)	171	if (req->type == REQ_READ)
116	SvCUR_set (req->data, req->dataoffset	172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
117	+ req->result > 0 ? req->result : 0);
118		173
		174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		175	SvREADONLY_off (req->data);
		176
119	if (req->data)	177	if (req->statdata)
120	SvREFCNT_dec (req->data);
121
122	if (req->fh)
123	SvREFCNT_dec (req->fh);
124
125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
126	{	178	{
127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128	PL_laststatval = req->result;	180	PL_laststatval = req->result;
129	PL_statcache = *(req->statdata);	181	PL_statcache = *(req->statdata);
130
131	Safefree (req->statdata);
132	}	182	}
133		183
134	ENTER;	184	ENTER;
135	PUSHMARK (SP);	185	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));
137		186
138	if (req->type == REQ_OPEN)	187	if (req->type == REQ_READDIR)
139	{	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	{
140	/* convert fd to fh */	216	/* convert fd to fh */
141	SV *fh;	217	SV *fh;
142		218
143	PUTBACK;	219	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
145	SPAGAIN;	221	SPAGAIN;
146		222
147	fh = SvREFCNT_inc (POPs);	223	fh = SvREFCNT_inc (POPs);
148		224
149	PUSHMARK (SP);	225	PUSHMARK (SP);
150	XPUSHs (sv_2mortal (fh));	226	XPUSHs (sv_2mortal (fh));
		227	}
151	}	228	}
152		229
153	if (SvOK (req->callback))	230	if (SvOK (req->callback))
154	{	231	{
155	PUTBACK;	232	PUTBACK;
156	call_sv (req->callback, G_VOID \| G_EVAL);	233	call_sv (req->callback, G_VOID \| G_EVAL);
157	SPAGAIN;	234	SPAGAIN;
		235
		236	if (SvTRUE (ERRSV))
		237	{
		238	free_req (req);
		239	croak (0);
		240	}
158	}	241	}
159		242
160	LEAVE;	243	LEAVE;
161
162	if (req->callback)
163	SvREFCNT_dec (req->callback);
164		244
165	errno = errorno;	245	errno = errorno;
166	count++;	246	count++;
167	}	247	}
168		248
169	prv = req;	249	free_req (req);
170	req = req->next;
171	Safefree (prv);
172
173	/* TODO: croak on errors? */
174	}	250	}
175		251
176	return count;	252	return count;
177	}	253	}
178		254
…		…
199	}	275	}
200		276
201	static void	277	static void
202	send_req (aio_req req)	278	send_req (aio_req req)
203	{	279	{
		280	while (started < wanted && nreqs >= started)
		281	start_thread ();
		282
204	nreqs++;	283	nreqs++;
205		284
206	pthread_mutex_lock (&reqlock);	285	pthread_mutex_lock (&reqlock);
207		286
208	req->next = 0;	287	req->next = 0;
…		…
216	reqe = reqs = req;	295	reqe = reqs = req;
217		296
218	pthread_cond_signal (&reqwait);	297	pthread_cond_signal (&reqwait);
219	pthread_mutex_unlock (&reqlock);	298	pthread_mutex_unlock (&reqlock);
220		299
221	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)
222	{	342	{
223	poll_wait ();	343	poll_wait ();
224	poll_cb ();	344	poll_cb ();
225	}	345	}
226	}	346	}
227		347
		348	static void create_pipe ()
		349	{
		350	if (pipe (respipe))
		351	croak ("unable to initialize result pipe");
		352
		353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		354	croak ("cannot set result pipe to nonblocking mode");
		355
		356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		357	croak ("cannot set result pipe to nonblocking mode");
		358	}
		359
		360	/*****************************************************************************/
		361	/* work around various missing functions */
		362
		363	#if !HAVE_PREADWRITE
		364	# define pread aio_pread
		365	# define pwrite aio_pwrite
		366
		367	/*
		368	* make our pread/pwrite safe against themselves, but not against
		369	* normal read/write by using a mutex. slows down execution a lot,
		370	* but that's your problem, not mine.
		371	*/
		372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
		373
		374	static ssize_t
		375	pread (int fd, void *buf, size_t count, off_t offset)
		376	{
		377	ssize_t res;
		378	off_t ooffset;
		379
		380	pthread_mutex_lock (&preadwritelock);
		381	ooffset = lseek (fd, 0, SEEK_CUR);
		382	lseek (fd, offset, SEEK_SET);
		383	res = read (fd, buf, count);
		384	lseek (fd, ooffset, SEEK_SET);
		385	pthread_mutex_unlock (&preadwritelock);
		386
		387	return res;
		388	}
		389
		390	static ssize_t
		391	pwrite (int fd, void *buf, size_t count, off_t offset)
		392	{
		393	ssize_t res;
		394	off_t ooffset;
		395
		396	pthread_mutex_lock (&preadwritelock);
		397	ooffset = lseek (fd, 0, SEEK_CUR);
		398	lseek (fd, offset, SEEK_SET);
		399	res = write (fd, buf, count);
		400	lseek (fd, offset, SEEK_SET);
		401	pthread_mutex_unlock (&preadwritelock);
		402
		403	return res;
		404	}
		405	#endif
		406
		407	#if !HAVE_FDATASYNC
		408	# define fdatasync fsync
		409	#endif
		410
		411	#if !HAVE_READAHEAD
		412	# define readahead aio_readahead
		413
		414	static ssize_t
		415	readahead (int fd, off_t offset, size_t count)
		416	{
		417	char readahead_buf[4096];
		418
		419	while (count > 0)
		420	{
		421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		422
		423	pread (fd, readahead_buf, len, offset);
		424	offset += len;
		425	count -= len;
		426	}
		427
		428	errno = 0;
		429	}
		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
228	static void	437	static int
229	end_thread (void)	438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
230	{	439	{
231	aio_req req;	440	struct dirent *e;
232	New (0, req, 1, aio_cb);	441	int errorno;
233	req->type = REQ_QUIT;
234		442
235	send_req (req);	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;
236	}	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	/*****************************************************************************/
237		621
238	static void *	622	static void *
239	aio_proc (void *thr_arg)	623	aio_proc (void *thr_arg)
240	{	624	{
241	aio_req req;	625	aio_req req;
…		…
269		653
270	switch (type)	654	switch (type)
271	{	655	{
272	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;
273	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;
274	#if SYS_readahead	658
275	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;
276	#else	660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
277	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
278	#endif
279		661
280	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
281	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
282	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
283		665
284	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;
285	case REQ_CLOSE: req->result = close (req->fd); break;	667	case REQ_CLOSE: req->result = close (req->fd); break;
286	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;
287		671
		672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288	case REQ_FSYNC: req->result = fsync (req->fd); break;	673	case REQ_FSYNC: req->result = fsync (req->fd); break;
289	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
290		675
291	case REQ_QUIT:	676	case REQ_QUIT:
292	break;	677	break;
293		678
294	default:	679	default:
…		…
320	while (type != REQ_QUIT);	705	while (type != REQ_QUIT);
321		706
322	return 0;	707	return 0;
323	}	708	}
324		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
325	MODULE = IO::AIO PACKAGE = IO::AIO	779	MODULE = IO::AIO PACKAGE = IO::AIO
326		780
327	PROTOTYPES: ENABLE	781	PROTOTYPES: ENABLE
328		782
329	BOOT:	783	BOOT:
330	{	784	{
331	if (pipe (respipe))	785	create_pipe ();
332	croak ("unable to initialize result pipe");	786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
333
334	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
335	croak ("cannot set result pipe to nonblocking mode");
336
337	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
338	croak ("cannot set result pipe to nonblocking mode");
339	}	787	}
340		788
341	void	789	void
342	min_parallel(nthreads)	790	min_parallel(nthreads)
343	int nthreads	791	int nthreads
344	PROTOTYPE: $	792	PROTOTYPE: $
345	CODE:
346	while (nthreads > started)
347	start_thread ();
348		793
349	void	794	void
350	max_parallel(nthreads)	795	max_parallel(nthreads)
351	int nthreads	796	int nthreads
352	PROTOTYPE: $	797	PROTOTYPE: $
353	CODE:
354	{
355	int cur = started;
356	while (cur > nthreads)
357	{
358	end_thread ();
359	cur--;
360	}
361
362	while (started > nthreads)
363	{
364	poll_wait ();
365	poll_cb ();
366	}
367	}
368		798
369	int	799	int
370	max_outstanding(nreqs)	800	max_outstanding(nreqs)
371	int nreqs	801	int nreqs
372	PROTOTYPE: $	802	PROTOTYPE: $
…		…
381	int mode	811	int mode
382	SV * callback	812	SV * callback
383	PROTOTYPE: $$$;$	813	PROTOTYPE: $$$;$
384	CODE:	814	CODE:
385	{	815	{
386	aio_req req;	816	dREQ;
387
388	Newz (0, req, 1, aio_cb);
389
390	if (!req)
391	croak ("out of memory during aio_req allocation");
392		817
393	req->type = REQ_OPEN;	818	req->type = REQ_OPEN;
394	req->data = newSVsv (pathname);	819	req->data = newSVsv (pathname);
395	req->dataptr = SvPV_nolen (req->data);	820	req->dataptr = SvPVbyte_nolen (req->data);
396	req->fd = flags;	821	req->fd = flags;
397	req->mode = mode;	822	req->mode = mode;
398	req->callback = SvREFCNT_inc (callback);
399		823
400	send_req (req);	824	send_req (req);
401	}	825	}
402		826
403	void	827	void
…		…
409	aio_close = REQ_CLOSE	833	aio_close = REQ_CLOSE
410	aio_fsync = REQ_FSYNC	834	aio_fsync = REQ_FSYNC
411	aio_fdatasync = REQ_FDATASYNC	835	aio_fdatasync = REQ_FDATASYNC
412	CODE:	836	CODE:
413	{	837	{
414	aio_req req;	838	dREQ;
415
416	Newz (0, req, 1, aio_cb);
417
418	if (!req)
419	croak ("out of memory during aio_req allocation");
420		839
421	req->type = ix;	840	req->type = ix;
422	req->fh = newSVsv (fh);	841	req->fh = newSVsv (fh);
423	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424	req->callback = SvREFCNT_inc (callback);
425		843
426	send_req (req);	844	send_req (req);
427	}	845	}
428		846
429	void	847	void
430	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
431	SV * fh	849	SV * fh
432	UV offset	850	UV offset
433	IV length	851	UV length
434	SV * data	852	SV * data
435	IV dataoffset	853	UV dataoffset
436	SV * callback	854	SV * callback
437	ALIAS:	855	ALIAS:
438	aio_read = REQ_READ	856	aio_read = REQ_READ
439	aio_write = REQ_WRITE	857	aio_write = REQ_WRITE
440	PROTOTYPE: $$$$$;$	858	PROTOTYPE: $$$$$;$
441	CODE:	859	CODE:
442	{	860	{
443	aio_req req;	861	aio_req req;
444	STRLEN svlen;	862	STRLEN svlen;
445	char *svptr = SvPV (data, svlen);	863	char *svptr = SvPVbyte (data, svlen);
446		864
447	SvUPGRADE (data, SVt_PV);	865	SvUPGRADE (data, SVt_PV);
448	SvPOK_on (data);	866	SvPOK_on (data);
449		867
450	if (dataoffset < 0)	868	if (dataoffset < 0)
…		…
466	}	884	}
467		885
468	if (length < 0)	886	if (length < 0)
469	croak ("length must not be negative");	887	croak ("length must not be negative");
470		888
471	Newz (0, req, 1, aio_cb);	889	{
		890	dREQ;
472		891
473	if (!req)
474	croak ("out of memory during aio_req allocation");
475
476	req->type = ix;	892	req->type = ix;
477	req->fh = newSVsv (fh);	893	req->fh = newSVsv (fh);
478	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	894	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479	: IoOFP (sv_2io (fh)));	895	: IoOFP (sv_2io (fh)));
480	req->offset = offset;	896	req->offset = offset;
		897	req->length = length;
		898	req->data = SvREFCNT_inc (data);
		899	req->dataptr = (char *)svptr + dataoffset;
		900
		901	if (!SvREADONLY (data))
		902	{
		903	SvREADONLY_on (data);
		904	req->data2ptr = (void *)data;
		905	}
		906
		907	send_req (req);
		908	}
		909	}
		910
		911	void
		912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		913	SV * out_fh
		914	SV * in_fh
		915	UV in_offset
		916	UV length
		917	SV * callback
		918	PROTOTYPE: $$$$;$
		919	CODE:
		920	{
		921	dREQ;
		922
		923	req->type = REQ_SENDFILE;
		924	req->fh = newSVsv (out_fh);
		925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		926	req->fh2 = newSVsv (in_fh);
		927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		928	req->offset = in_offset;
481	req->length = length;	929	req->length = length;
482	req->data = SvREFCNT_inc (data);
483	req->dataptr = (char *)svptr + dataoffset;
484	req->callback = SvREFCNT_inc (callback);
485		930
486	send_req (req);	931	send_req (req);
487	}	932	}
488		933
489	void	934	void
…		…
493	IV length	938	IV length
494	SV * callback	939	SV * callback
495	PROTOTYPE: $$$;$	940	PROTOTYPE: $$$;$
496	CODE:	941	CODE:
497	{	942	{
498	aio_req req;	943	dREQ;
499
500	if (length < 0)
501	croak ("length must not be negative");
502
503	Newz (0, req, 1, aio_cb);
504
505	if (!req)
506	croak ("out of memory during aio_req allocation");
507		944
508	req->type = REQ_READAHEAD;	945	req->type = REQ_READAHEAD;
509	req->fh = newSVsv (fh);	946	req->fh = newSVsv (fh);
510	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
511	req->offset = offset;	948	req->offset = offset;
512	req->length = length;	949	req->length = length;
513	req->callback = SvREFCNT_inc (callback);
514		950
515	send_req (req);	951	send_req (req);
516	}	952	}
517		953
518	void	954	void
…		…
522	ALIAS:	958	ALIAS:
523	aio_stat = REQ_STAT	959	aio_stat = REQ_STAT
524	aio_lstat = REQ_LSTAT	960	aio_lstat = REQ_LSTAT
525	CODE:	961	CODE:
526	{	962	{
527	aio_req req;	963	dREQ;
528
529	Newz (0, req, 1, aio_cb);
530
531	if (!req)
532	croak ("out of memory during aio_req allocation");
533		964
534	New (0, req->statdata, 1, Stat_t);	965	New (0, req->statdata, 1, Stat_t);
535
536	if (!req->statdata)	966	if (!req->statdata)
		967	{
		968	free_req (req);
537	croak ("out of memory during aio_req->statdata allocation");	969	croak ("out of memory during aio_req->statdata allocation");
		970	}
538		971
539	if (SvPOK (fh_or_path))	972	if (SvPOK (fh_or_path))
540	{	973	{
541	req->type = ix;	974	req->type = ix;
542	req->data = newSVsv (fh_or_path);	975	req->data = newSVsv (fh_or_path);
543	req->dataptr = SvPV_nolen (req->data);	976	req->dataptr = SvPVbyte_nolen (req->data);
544	}	977	}
545	else	978	else
546	{	979	{
547	req->type = REQ_FSTAT;	980	req->type = REQ_FSTAT;
548	req->fh = newSVsv (fh_or_path);	981	req->fh = newSVsv (fh_or_path);
549	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
550	}	983	}
551		984
552	req->callback = SvREFCNT_inc (callback);
553
554	send_req (req);	985	send_req (req);
555	}	986	}
556		987
557	void	988	void
558	aio_unlink(pathname,callback=&PL_sv_undef)	989	aio_unlink(pathname,callback=&PL_sv_undef)
559	SV * pathname	990	SV * pathname
560	SV * callback	991	SV * callback
		992	ALIAS:
		993	aio_unlink = REQ_UNLINK
		994	aio_rmdir = REQ_RMDIR
561	CODE:	995	CODE:
562	{	996	{
563	aio_req req;	997	dREQ;
564		998
565	Newz (0, req, 1, aio_cb);	999	req->type = ix;
		1000	req->data = newSVsv (pathname);
		1001	req->dataptr = SvPVbyte_nolen (req->data);
566		1002
567	if (!req)	1003	send_req (req);
568	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;
569		1014
570	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;
571	req->data = newSVsv (pathname);	1033	req->data = newSVsv (pathname);
572	req->dataptr = SvPV_nolen (req->data);	1034	req->dataptr = SvPVbyte_nolen (req->data);
573	req->callback = SvREFCNT_inc (callback);
574		1035
575	send_req (req);	1036	send_req (req);
576	}	1037	}
577		1038
578	void	1039	void

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.13 by root, Fri Jul 22 08:25:22 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 1.13 by root, Fri Jul 22 08:25:22 2005 UTC vs.
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC