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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.41 by root, Sat Jun 24 19:14:04 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
		8	#include "autoconf/config.h"
		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
5	#include <sys/types.h>	14	#include <sys/types.h>
6	#include <sys/stat.h>	15	#include <sys/stat.h>
7		16	#include <limits.h>
8	#include <unistd.h>	17	#include <unistd.h>
9	#include <fcntl.h>	18	#include <fcntl.h>
10	#include <signal.h>	19	#include <signal.h>
11	#include <sched.h>	20	#include <sched.h>
		21
		22	#if HAVE_SENDFILE
12	#if __linux	23	# if __linux
		24	# include <sys/sendfile.h>
		25	# elif __freebsd
13	#include <sys/syscall.h>	26	# include <sys/socket.h>
		27	# include <sys/uio.h>
		28	# elif __hpux
		29	# include <sys/socket.h>
		30	# elif __solaris /* not yet */
		31	# include <sys/sendfile.h>
		32	# else
		33	# error sendfile support requested but not available
14	#endif	34	# endif
		35	#endif
15		36
16	#include <pthread.h>	37	/* used for struct dirent, AIX doesn't provide it */
17		38	#ifndef NAME_MAX
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	# define NAME_MAX 4096
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	40	#endif
20	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
21		41
22	#if __ia64	42	#if __ia64
23	# define STACKSIZE 65536	43	# define STACKSIZE 65536
24	#else	44	#else
25	# define STACKSIZE 4096	45	# define STACKSIZE 8192
26	#endif	46	#endif
27		47
28	enum {	48	enum {
29	REQ_QUIT,	49	REQ_QUIT,
30	REQ_OPEN, REQ_CLOSE,	50	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,	51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		52	REQ_SENDFILE,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33	REQ_FSYNC, REQ_FDATASYNC,	54	REQ_FSYNC, REQ_FDATASYNC,
		55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		56	REQ_READDIR,
		57	REQ_LINK, REQ_SYMLINK,
34	};	58	};
35		59
36	typedef struct aio_cb {	60	typedef struct aio_cb {
37	struct aio_cb *volatile next;	61	struct aio_cb *volatile next;
38		62
39	int type;	63	int type;
40		64
		65	/* should receive a cleanup, with unions */
41	int fd;	66	int fd, fd2;
42	off_t offset;	67	off_t offset;
43	size_t length;	68	size_t length;
44	ssize_t result;	69	ssize_t result;
45	mode_t mode; /* open */	70	mode_t mode; /* open */
46	int errorno;	71	int errorno;
47	SV data, callback, *fh;	72	SV data, callback;
48	void *dataptr;	73	SV fh, fh2;
		74	void dataptr, data2ptr;
49	STRLEN dataoffset;	75	STRLEN dataoffset;
50		76
51	Stat_t *statdata;	77	Stat_t *statdata;
52	} aio_cb;	78	} aio_cb;
53		79
54	typedef aio_cb *aio_req;	80	typedef aio_cb *aio_req;
55		81
56	static int started;	82	static int started, wanted;
57	static volatile int nreqs;	83	static volatile int nreqs;
58	static int max_outstanding = 1<<30;	84	static int max_outstanding = 1<<30;
59	static int respipe [2];	85	static int respipe [2];
60		86
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		90
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	91	static volatile aio_req reqs, reqe; /* queue start, queue end */
66	static volatile aio_req ress, rese; /* queue start, queue end */	92	static volatile aio_req ress, rese; /* queue start, queue end */
67		93
		94	static void free_req (aio_req req)
		95	{
		96	if (req->data)
		97	SvREFCNT_dec (req->data);
		98
		99	if (req->fh)
		100	SvREFCNT_dec (req->fh);
		101
		102	if (req->fh2)
		103	SvREFCNT_dec (req->fh2);
		104
		105	if (req->statdata)
		106	Safefree (req->statdata);
		107
		108	if (req->callback)
		109	SvREFCNT_dec (req->callback);
		110
		111	if (req->type == REQ_READDIR && req->result >= 0)
		112	free (req->data2ptr);
		113
		114	Safefree (req);
		115	}
		116
68	static void	117	static void
69	poll_wait ()	118	poll_wait ()
70	{	119	{
71	if (nreqs && !ress)	120	if (nreqs && !ress)
72	{	121	{
…		…
81	static int	130	static int
82	poll_cb ()	131	poll_cb ()
83	{	132	{
84	dSP;	133	dSP;
85	int count = 0;	134	int count = 0;
		135	int do_croak = 0;
86	aio_req req, prv;	136	aio_req req;
87		137
		138	for (;;)
		139	{
88	pthread_mutex_lock (&reslock);	140	pthread_mutex_lock (&reslock);
		141	req = ress;
89		142
90	{	143	if (req)
		144	{
		145	ress = req->next;
		146
		147	if (!ress)
		148	{
91	/* read any signals sent by the worker threads */	149	/* read any signals sent by the worker threads */
92	char buf [32];	150	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)	151	while (read (respipe [0], buf, 32) == 32)
		152	;
		153
		154	rese = 0;
		155	}
94	;	156	}
95	}
96		157
97	req = ress;
98	ress = rese = 0;
99
100	pthread_mutex_unlock (&reslock);	158	pthread_mutex_unlock (&reslock);
101		159
102	while (req)	160	if (!req)
103	{	161	break;
		162
104	nreqs--;	163	nreqs--;
105		164
106	if (req->type == REQ_QUIT)	165	if (req->type == REQ_QUIT)
107	started--;	166	started--;
108	else	167	else
109	{	168	{
110	int errorno = errno;	169	int errorno = errno;
111	errno = req->errorno;	170	errno = req->errorno;
112		171
113	if (req->type == REQ_READ)	172	if (req->type == REQ_READ)
114	SvCUR_set (req->data, req->dataoffset	173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
115	+ req->result > 0 ? req->result : 0);
116		174
		175	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		176	SvREADONLY_off (req->data);
		177
117	if (req->data)	178	if (req->statdata)
118	SvREFCNT_dec (req->data);
119
120	if (req->fh)
121	SvREFCNT_dec (req->fh);
122
123	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
124	{	179	{
125	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
126	PL_laststatval = req->result;	181	PL_laststatval = req->result;
127	PL_statcache = *(req->statdata);	182	PL_statcache = *(req->statdata);
128
129	Safefree (req->statdata);
130	}	183	}
131		184
132	ENTER;	185	ENTER;
133	PUSHMARK (SP);	186	PUSHMARK (SP);
134	XPUSHs (sv_2mortal (newSViv (req->result)));
135		187
136	if (req->type == REQ_OPEN)	188	if (req->type == REQ_READDIR)
137	{	189	{
		190	SV *rv = &PL_sv_undef;
		191
		192	if (req->result >= 0)
		193	{
		194	char *buf = req->data2ptr;
		195	AV *av = newAV ();
		196
		197	while (req->result)
		198	{
		199	SV *sv = newSVpv (buf, 0);
		200
		201	av_push (av, sv);
		202	buf += SvCUR (sv) + 1;
		203	req->result--;
		204	}
		205
		206	rv = sv_2mortal (newRV_noinc ((SV *)av));
		207	}
		208
		209	XPUSHs (rv);
		210	}
		211	else
		212	{
		213	XPUSHs (sv_2mortal (newSViv (req->result)));
		214
		215	if (req->type == REQ_OPEN)
		216	{
138	/* convert fd to fh */	217	/* convert fd to fh */
139	SV *fh;	218	SV *fh;
140		219
141	PUTBACK;	220	PUTBACK;
142	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	221	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
143	SPAGAIN;	222	SPAGAIN;
144		223
145	fh = SvREFCNT_inc (POPs);	224	fh = SvREFCNT_inc (POPs);
146		225
147	PUSHMARK (SP);	226	PUSHMARK (SP);
148	XPUSHs (sv_2mortal (fh));	227	XPUSHs (sv_2mortal (fh));
		228	}
149	}	229	}
150		230
151	if (SvOK (req->callback))	231	if (SvOK (req->callback))
152	{	232	{
153	PUTBACK;	233	PUTBACK;
154	call_sv (req->callback, G_VOID \| G_EVAL);	234	call_sv (req->callback, G_VOID \| G_EVAL);
155	SPAGAIN;	235	SPAGAIN;
		236
		237	if (SvTRUE (ERRSV))
		238	{
		239	free_req (req);
		240	croak (0);
		241	}
156	}	242	}
157		243
158	LEAVE;	244	LEAVE;
159
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162		245
163	errno = errorno;	246	errno = errorno;
164	count++;	247	count++;
165	}	248	}
166		249
167	prv = req;	250	free_req (req);
168	req = req->next;
169	Safefree (prv);
170
171	/* TODO: croak on errors? */
172	}	251	}
173		252
174	return count;	253	return count;
175	}	254	}
176		255
…		…
197	}	276	}
198		277
199	static void	278	static void
200	send_req (aio_req req)	279	send_req (aio_req req)
201	{	280	{
		281	while (started < wanted && nreqs >= started)
		282	start_thread ();
		283
202	nreqs++;	284	nreqs++;
203		285
204	pthread_mutex_lock (&reqlock);	286	pthread_mutex_lock (&reqlock);
205		287
206	req->next = 0;	288	req->next = 0;
…		…
214	reqe = reqs = req;	296	reqe = reqs = req;
215		297
216	pthread_cond_signal (&reqwait);	298	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);	299	pthread_mutex_unlock (&reqlock);
218		300
219	while (nreqs > max_outstanding)	301	if (nreqs > max_outstanding)
		302	for (;;)
		303	{
		304	poll_cb ();
		305
		306	if (nreqs <= max_outstanding)
		307	break;
		308
		309	poll_wait ();
		310	}
		311	}
		312
		313	static void
		314	end_thread (void)
		315	{
		316	aio_req req;
		317	Newz (0, req, 1, aio_cb);
		318	req->type = REQ_QUIT;
		319
		320	send_req (req);
		321	}
		322
		323	static void min_parallel (int nthreads)
		324	{
		325	if (wanted < nthreads)
		326	wanted = nthreads;
		327	}
		328
		329	static void max_parallel (int nthreads)
		330	{
		331	int cur = started;
		332
		333	if (wanted > nthreads)
		334	wanted = nthreads;
		335
		336	while (cur > wanted)
		337	{
		338	end_thread ();
		339	cur--;
		340	}
		341
		342	while (started > wanted)
220	{	343	{
221	poll_wait ();	344	poll_wait ();
222	poll_cb ();	345	poll_cb ();
223	}	346	}
224	}	347	}
225		348
		349	static void create_pipe ()
		350	{
		351	if (pipe (respipe))
		352	croak ("unable to initialize result pipe");
		353
		354	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
		355	croak ("cannot set result pipe to nonblocking mode");
		356
		357	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		358	croak ("cannot set result pipe to nonblocking mode");
		359	}
		360
		361	/*****************************************************************************/
		362	/* work around various missing functions */
		363
		364	#if !HAVE_PREADWRITE
		365	# define pread aio_pread
		366	# define pwrite aio_pwrite
		367
		368	/*
		369	* make our pread/pwrite safe against themselves, but not against
		370	* normal read/write by using a mutex. slows down execution a lot,
		371	* but that's your problem, not mine.
		372	*/
		373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
		374
		375	static ssize_t
		376	pread (int fd, void *buf, size_t count, off_t offset)
		377	{
		378	ssize_t res;
		379	off_t ooffset;
		380
		381	pthread_mutex_lock (&preadwritelock);
		382	ooffset = lseek (fd, 0, SEEK_CUR);
		383	lseek (fd, offset, SEEK_SET);
		384	res = read (fd, buf, count);
		385	lseek (fd, ooffset, SEEK_SET);
		386	pthread_mutex_unlock (&preadwritelock);
		387
		388	return res;
		389	}
		390
		391	static ssize_t
		392	pwrite (int fd, void *buf, size_t count, off_t offset)
		393	{
		394	ssize_t res;
		395	off_t ooffset;
		396
		397	pthread_mutex_lock (&preadwritelock);
		398	ooffset = lseek (fd, 0, SEEK_CUR);
		399	lseek (fd, offset, SEEK_SET);
		400	res = write (fd, buf, count);
		401	lseek (fd, offset, SEEK_SET);
		402	pthread_mutex_unlock (&preadwritelock);
		403
		404	return res;
		405	}
		406	#endif
		407
		408	#if !HAVE_FDATASYNC
		409	# define fdatasync fsync
		410	#endif
		411
		412	#if !HAVE_READAHEAD
		413	# define readahead aio_readahead
		414
		415	static ssize_t
		416	readahead (int fd, off_t offset, size_t count)
		417	{
		418	char readahead_buf[4096];
		419
		420	while (count > 0)
		421	{
		422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
		423
		424	pread (fd, readahead_buf, len, offset);
		425	offset += len;
		426	count -= len;
		427	}
		428
		429	errno = 0;
		430	}
		431	#endif
		432
		433	#if !HAVE_READDIR_R
		434	# define readdir_r aio_readdir_r
		435
		436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		437
226	static void	438	static int
227	end_thread (void)	439	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
228	{	440	{
229	aio_req req;	441	struct dirent *e;
230	New (0, req, 1, aio_cb);	442	int errorno;
231	req->type = REQ_QUIT;
232		443
233	send_req (req);	444	pthread_mutex_lock (&readdirlock);
		445
		446	e = readdir (dirp);
		447	errorno = errno;
		448
		449	if (e)
		450	{
		451	*res = ent;
		452	strcpy (ent->d_name, e->d_name);
		453	}
		454	else
		455	*res = 0;
		456
		457	pthread_mutex_unlock (&readdirlock);
		458
		459	errno = errorno;
		460	return e ? 0 : -1;
234	}	461	}
		462	#endif
		463
		464	/* sendfile always needs emulation */
		465	static ssize_t
		466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		467	{
		468	ssize_t res;
		469
		470	if (!count)
		471	return 0;
		472
		473	#if HAVE_SENDFILE
		474	# if __linux
		475	res = sendfile (ofd, ifd, &offset, count);
		476
		477	# elif __freebsd
		478	/*
		479	* Of course, the freebsd sendfile is a dire hack with no thoughts
		480	* wasted on making it similar to other I/O functions.
		481	*/
		482	{
		483	off_t sbytes;
		484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		485
		486	if (res < 0 && sbytes)
		487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		488	res = sbytes;
		489	}
		490
		491	# elif __hpux
		492	res = sendfile (ofd, ifd, offset, count, 0, 0);
		493
		494	# elif __solaris
		495	{
		496	struct sendfilevec vec;
		497	size_t sbytes;
		498
		499	vec.sfv_fd = ifd;
		500	vec.sfv_flag = 0;
		501	vec.sfv_off = offset;
		502	vec.sfv_len = count;
		503
		504	res = sendfilev (ofd, &vec, 1, &sbytes);
		505
		506	if (res < 0 && sbytes)
		507	res = sbytes;
		508	}
		509
		510	# endif
		511	#else
		512	res = -1;
		513	errno = ENOSYS;
		514	#endif
		515
		516	if (res < 0
		517	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		518	#if __solaris
		519	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		520	#endif
		521	)
		522	)
		523	{
		524	/* emulate sendfile. this is a major pain in the ass */
		525	char buf[4096];
		526	res = 0;
		527
		528	while (count)
		529	{
		530	ssize_t cnt;
		531
		532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		533
		534	if (cnt <= 0)
		535	{
		536	if (cnt && !res) res = -1;
		537	break;
		538	}
		539
		540	cnt = write (ofd, buf, cnt);
		541
		542	if (cnt <= 0)
		543	{
		544	if (cnt && !res) res = -1;
		545	break;
		546	}
		547
		548	offset += cnt;
		549	res += cnt;
		550	count -= cnt;
		551	}
		552	}
		553
		554	return res;
		555	}
		556
		557	/* read a full directory */
		558	static int
		559	scandir_ (const char path, void *namesp)
		560	{
		561	DIR *dirp = opendir (path);
		562	union
		563	{
		564	struct dirent d;
		565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		566	} u;
		567	struct dirent *entp;
		568	char name, names;
		569	int memlen = 4096;
		570	int memofs = 0;
		571	int res = 0;
		572	int errorno;
		573
		574	if (!dirp)
		575	return -1;
		576
		577	names = malloc (memlen);
		578
		579	for (;;)
		580	{
		581	errno = 0, readdir_r (dirp, &u.d, &entp);
		582
		583	if (!entp)
		584	break;
		585
		586	name = entp->d_name;
		587
		588	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		589	{
		590	int len = strlen (name) + 1;
		591
		592	res++;
		593
		594	while (memofs + len > memlen)
		595	{
		596	memlen *= 2;
		597	names = realloc (names, memlen);
		598	if (!names)
		599	break;
		600	}
		601
		602	memcpy (names + memofs, name, len);
		603	memofs += len;
		604	}
		605	}
		606
		607	errorno = errno;
		608	closedir (dirp);
		609
		610	if (errorno)
		611	{
		612	free (names);
		613	errno = errorno;
		614	res = -1;
		615	}
		616
		617	namesp = (void )names;
		618	return res;
		619	}
		620
		621	/*****************************************************************************/
235		622
236	static void *	623	static void *
237	aio_proc (void *thr_arg)	624	aio_proc (void *thr_arg)
238	{	625	{
239	aio_req req;	626	aio_req req;
…		…
267		654
268	switch (type)	655	switch (type)
269	{	656	{
270	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272	#if SYS_readahead	659
273	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274	#else	661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
275	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276	#endif
277		662
278	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
279	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
280	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
281		666
282	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283	case REQ_CLOSE: req->result = close (req->fd); break;	668	case REQ_CLOSE: req->result = close (req->fd); break;
284	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
		673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
285		674
		675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
286	case REQ_FSYNC: req->result = fsync (req->fd); break;	676	case REQ_FSYNC: req->result = fsync (req->fd); break;
287	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
288		678
289	case REQ_QUIT:	679	case REQ_QUIT:
290	break;	680	break;
291		681
292	default:	682	default:
…		…
318	while (type != REQ_QUIT);	708	while (type != REQ_QUIT);
319		709
320	return 0;	710	return 0;
321	}	711	}
322		712
		713	/*****************************************************************************/
		714
		715	static void atfork_prepare (void)
		716	{
		717	pthread_mutex_lock (&reqlock);
		718	pthread_mutex_lock (&reslock);
		719	#if !HAVE_PREADWRITE
		720	pthread_mutex_lock (&preadwritelock);
		721	#endif
		722	#if !HAVE_READDIR_R
		723	pthread_mutex_lock (&readdirlock);
		724	#endif
		725	}
		726
		727	static void atfork_parent (void)
		728	{
		729	#if !HAVE_READDIR_R
		730	pthread_mutex_unlock (&readdirlock);
		731	#endif
		732	#if !HAVE_PREADWRITE
		733	pthread_mutex_unlock (&preadwritelock);
		734	#endif
		735	pthread_mutex_unlock (&reslock);
		736	pthread_mutex_unlock (&reqlock);
		737	}
		738
		739	static void atfork_child (void)
		740	{
		741	aio_req prv;
		742
		743	started = 0;
		744
		745	while (reqs)
		746	{
		747	prv = reqs;
		748	reqs = prv->next;
		749	free_req (prv);
		750	}
		751
		752	reqs = reqe = 0;
		753
		754	while (ress)
		755	{
		756	prv = ress;
		757	ress = prv->next;
		758	free_req (prv);
		759	}
		760
		761	ress = rese = 0;
		762
		763	close (respipe [0]);
		764	close (respipe [1]);
		765	create_pipe ();
		766
		767	atfork_parent ();
		768	}
		769
		770	#define dREQ \
		771	aio_req req; \
		772	\
		773	if (SvOK (callback) && !SvROK (callback)) \
		774	croak ("clalback must be undef or of reference type"); \
		775	\
		776	Newz (0, req, 1, aio_cb); \
		777	if (!req) \
		778	croak ("out of memory during aio_req allocation"); \
		779	\
		780	req->callback = newSVsv (callback);
		781
323	MODULE = IO::AIO PACKAGE = IO::AIO	782	MODULE = IO::AIO PACKAGE = IO::AIO
324		783
325	PROTOTYPES: ENABLE	784	PROTOTYPES: ENABLE
326		785
327	BOOT:	786	BOOT:
328	{	787	{
329	if (pipe (respipe))	788	HV *stash = gv_stashpv ("IO::AIO", 1);
330	croak ("unable to initialize result pipe");	789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
331		792
332	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	793	create_pipe ();
333	croak ("cannot set result pipe to nonblocking mode");	794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
334
335	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
336	croak ("cannot set result pipe to nonblocking mode");
337	}	795	}
338		796
339	void	797	void
340	min_parallel(nthreads)	798	min_parallel (nthreads)
341	int nthreads	799	int nthreads
342	PROTOTYPE: $	800	PROTOTYPE: $
343	CODE:
344	while (nthreads > started)
345	start_thread ();
346		801
347	void	802	void
348	max_parallel(nthreads)	803	max_parallel (nthreads)
349	int nthreads	804	int nthreads
350	PROTOTYPE: $	805	PROTOTYPE: $
351	CODE:
352	{
353	int cur = started;
354	while (cur > nthreads)
355	{
356	end_thread ();
357	cur--;
358	}
359
360	while (started > nthreads)
361	{
362	poll_wait ();
363	poll_cb ();
364	}
365	}
366		806
367	int	807	int
368	max_outstanding(nreqs)	808	max_outstanding (nreqs)
369	int nreqs	809	int nreqs
370	PROTOTYPE: $	810	PROTOTYPE: $
371	CODE:	811	CODE:
372	RETVAL = max_outstanding;	812	RETVAL = max_outstanding;
373	max_outstanding = nreqs;	813	max_outstanding = nreqs;
374		814
375	void	815	void
376	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
377	SV * pathname	817	SV * pathname
378	int flags	818	int flags
379	int mode	819	int mode
380	SV * callback	820	SV * callback
381	PROTOTYPE: $$$;$	821	PROTOTYPE: $$$;$
382	CODE:	822	CODE:
383	{	823	{
384	aio_req req;	824	dREQ;
385
386	Newz (0, req, 1, aio_cb);
387
388	if (!req)
389	croak ("out of memory during aio_req allocation");
390		825
391	req->type = REQ_OPEN;	826	req->type = REQ_OPEN;
392	req->data = newSVsv (pathname);	827	req->data = newSVsv (pathname);
393	req->dataptr = SvPV_nolen (req->data);	828	req->dataptr = SvPVbyte_nolen (req->data);
394	req->fd = flags;	829	req->fd = flags;
395	req->mode = mode;	830	req->mode = mode;
396	req->callback = SvREFCNT_inc (callback);
397		831
398	send_req (req);	832	send_req (req);
399	}	833	}
400		834
401	void	835	void
402	aio_close(fh,callback=&PL_sv_undef)	836	aio_close (fh,callback=&PL_sv_undef)
403	SV * fh	837	SV * fh
404	SV * callback	838	SV * callback
405	PROTOTYPE: $;$	839	PROTOTYPE: $;$
406	ALIAS:	840	ALIAS:
407	aio_close = REQ_CLOSE	841	aio_close = REQ_CLOSE
408	aio_fsync = REQ_FSYNC	842	aio_fsync = REQ_FSYNC
409	aio_fdatasync = REQ_FDATASYNC	843	aio_fdatasync = REQ_FDATASYNC
410	CODE:	844	CODE:
411	{	845	{
412	aio_req req;	846	dREQ;
413
414	Newz (0, req, 1, aio_cb);
415
416	if (!req)
417	croak ("out of memory during aio_req allocation");
418		847
419	req->type = ix;	848	req->type = ix;
420	req->fh = newSVsv (fh);	849	req->fh = newSVsv (fh);
421	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422	req->callback = SvREFCNT_inc (callback);
423		851
424	send_req (req);	852	send_req (req);
425	}	853	}
426		854
427	void	855	void
428	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429	SV * fh	857	SV * fh
430	UV offset	858	UV offset
431	IV length	859	UV length
432	SV * data	860	SV * data
433	IV dataoffset	861	UV dataoffset
434	SV * callback	862	SV * callback
435	ALIAS:	863	ALIAS:
436	aio_read = REQ_READ	864	aio_read = REQ_READ
437	aio_write = REQ_WRITE	865	aio_write = REQ_WRITE
438	PROTOTYPE: $$$$$;$	866	PROTOTYPE: $$$$$;$
439	CODE:	867	CODE:
440	{	868	{
441	aio_req req;	869	aio_req req;
442	STRLEN svlen;	870	STRLEN svlen;
443	char *svptr = SvPV (data, svlen);	871	char *svptr = SvPVbyte (data, svlen);
444		872
445	SvUPGRADE (data, SVt_PV);	873	SvUPGRADE (data, SVt_PV);
446	SvPOK_on (data);	874	SvPOK_on (data);
447		875
448	if (dataoffset < 0)	876	if (dataoffset < 0)
…		…
464	}	892	}
465		893
466	if (length < 0)	894	if (length < 0)
467	croak ("length must not be negative");	895	croak ("length must not be negative");
468		896
469	Newz (0, req, 1, aio_cb);	897	{
		898	dREQ;
470		899
471	if (!req)
472	croak ("out of memory during aio_req allocation");
473
474	req->type = ix;	900	req->type = ix;
475	req->fh = newSVsv (fh);	901	req->fh = newSVsv (fh);
476	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477	: IoOFP (sv_2io (fh)));	903	: IoOFP (sv_2io (fh)));
478	req->offset = offset;	904	req->offset = offset;
		905	req->length = length;
		906	req->data = SvREFCNT_inc (data);
		907	req->dataptr = (char *)svptr + dataoffset;
		908
		909	if (!SvREADONLY (data))
		910	{
		911	SvREADONLY_on (data);
		912	req->data2ptr = (void *)data;
		913	}
		914
		915	send_req (req);
		916	}
		917	}
		918
		919	void
		920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		921	SV * out_fh
		922	SV * in_fh
		923	UV in_offset
		924	UV length
		925	SV * callback
		926	PROTOTYPE: $$$$;$
		927	CODE:
		928	{
		929	dREQ;
		930
		931	req->type = REQ_SENDFILE;
		932	req->fh = newSVsv (out_fh);
		933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		934	req->fh2 = newSVsv (in_fh);
		935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		936	req->offset = in_offset;
479	req->length = length;	937	req->length = length;
480	req->data = SvREFCNT_inc (data);
481	req->dataptr = (char *)svptr + dataoffset;
482	req->callback = SvREFCNT_inc (callback);
483		938
484	send_req (req);	939	send_req (req);
485	}	940	}
486		941
487	void	942	void
488	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
489	SV * fh	944	SV * fh
490	UV offset	945	UV offset
491	IV length	946	IV length
492	SV * callback	947	SV * callback
493	PROTOTYPE: $$$;$	948	PROTOTYPE: $$$;$
494	CODE:	949	CODE:
495	{	950	{
496	aio_req req;	951	dREQ;
497
498	if (length < 0)
499	croak ("length must not be negative");
500
501	Newz (0, req, 1, aio_cb);
502
503	if (!req)
504	croak ("out of memory during aio_req allocation");
505		952
506	req->type = REQ_READAHEAD;	953	req->type = REQ_READAHEAD;
507	req->fh = newSVsv (fh);	954	req->fh = newSVsv (fh);
508	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509	req->offset = offset;	956	req->offset = offset;
510	req->length = length;	957	req->length = length;
511	req->callback = SvREFCNT_inc (callback);
512		958
513	send_req (req);	959	send_req (req);
514	}	960	}
515		961
516	void	962	void
517	aio_stat(fh_or_path,callback=&PL_sv_undef)	963	aio_stat (fh_or_path,callback=&PL_sv_undef)
518	SV * fh_or_path	964	SV * fh_or_path
519	SV * callback	965	SV * callback
520	ALIAS:	966	ALIAS:
521	aio_stat = REQ_STAT	967	aio_stat = REQ_STAT
522	aio_lstat = REQ_LSTAT	968	aio_lstat = REQ_LSTAT
523	CODE:	969	CODE:
524	{	970	{
525	aio_req req;	971	dREQ;
526
527	Newz (0, req, 1, aio_cb);
528
529	if (!req)
530	croak ("out of memory during aio_req allocation");
531		972
532	New (0, req->statdata, 1, Stat_t);	973	New (0, req->statdata, 1, Stat_t);
533
534	if (!req->statdata)	974	if (!req->statdata)
		975	{
		976	free_req (req);
535	croak ("out of memory during aio_req->statdata allocation");	977	croak ("out of memory during aio_req->statdata allocation");
		978	}
536		979
537	if (SvPOK (fh_or_path))	980	if (SvPOK (fh_or_path))
538	{	981	{
539	req->type = ix;	982	req->type = ix;
540	req->data = newSVsv (fh_or_path);	983	req->data = newSVsv (fh_or_path);
541	req->dataptr = SvPV_nolen (req->data);	984	req->dataptr = SvPVbyte_nolen (req->data);
542	}	985	}
543	else	986	else
544	{	987	{
545	req->type = REQ_FSTAT;	988	req->type = REQ_FSTAT;
546	req->fh = newSVsv (fh_or_path);	989	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}	991	}
549		992
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);	993	send_req (req);
553	}	994	}
554		995
555	void	996	void
556	aio_unlink(pathname,callback=&PL_sv_undef)	997	aio_unlink (pathname,callback=&PL_sv_undef)
557	SV * pathname	998	SV * pathname
558	SV * callback	999	SV * callback
		1000	ALIAS:
		1001	aio_unlink = REQ_UNLINK
		1002	aio_rmdir = REQ_RMDIR
		1003	aio_readdir = REQ_READDIR
559	CODE:	1004	CODE:
560	{	1005	{
561	aio_req req;	1006	dREQ;
562		1007
563	Newz (0, req, 1, aio_cb);	1008	req->type = ix;
564
565	if (!req)
566	croak ("out of memory during aio_req allocation");
567
568	req->type = REQ_UNLINK;
569	req->data = newSVsv (pathname);	1009	req->data = newSVsv (pathname);
570	req->dataptr = SvPV_nolen (req->data);	1010	req->dataptr = SvPVbyte_nolen (req->data);
571	req->callback = SvREFCNT_inc (callback);
572		1011
573	send_req (req);	1012	send_req (req);
574	}	1013	}
575		1014
576	void	1015	void
		1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1017	SV * oldpath
		1018	SV * newpath
		1019	SV * callback
		1020	ALIAS:
		1021	aio_link = REQ_LINK
		1022	aio_symlink = REQ_SYMLINK
		1023	aio_rename = REQ_RENAME
		1024	CODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = ix;
		1029	req->fh = newSVsv (oldpath);
		1030	req->data2ptr = SvPVbyte_nolen (req->fh);
		1031	req->data = newSVsv (newpath);
		1032	req->dataptr = SvPVbyte_nolen (req->data);
		1033
		1034	send_req (req);
		1035	}
		1036
		1037	void
577	flush()	1038	flush ()
578	PROTOTYPE:	1039	PROTOTYPE:
579	CODE:	1040	CODE:
580	while (nreqs)	1041	while (nreqs)
581	{	1042	{
582	poll_wait ();	1043	poll_wait ();

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs. Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC