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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.40 by root, Sat Jun 24 16:27:02 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	#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
16		35
17	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	36	/* used for struct dirent, AIX doesn't provide it */
18	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	37	#ifndef NAME_MAX
19	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	38	# define NAME_MAX 4096
		39	#endif
20		40
21	#if __ia64	41	#if __ia64
22	# define STACKSIZE 65536	42	# define STACKSIZE 65536
23	#else	43	#else
24	# define STACKSIZE 4096	44	# define STACKSIZE 8192
25	#endif	45	#endif
26		46
27	enum {	47	enum {
28	REQ_QUIT,	48	REQ_QUIT,
29	REQ_OPEN, REQ_CLOSE,	49	REQ_OPEN, REQ_CLOSE,
30	REQ_READ, REQ_WRITE, REQ_READAHEAD,	50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		51	REQ_SENDFILE,
31	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32	REQ_FSYNC, REQ_FDATASYNC,	53	REQ_FSYNC, REQ_FDATASYNC,
		54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		55	REQ_READDIR,
		56	REQ_LINK, REQ_SYMLINK,
33	};	57	};
34		58
35	typedef struct aio_cb {	59	typedef struct aio_cb {
36	struct aio_cb *volatile next;	60	struct aio_cb *volatile next;
37		61
38	int type;	62	int type;
39		63
		64	/* should receive a cleanup, with unions */
40	int fd;	65	int fd, fd2;
41	off_t offset;	66	off_t offset;
42	size_t length;	67	size_t length;
43	ssize_t result;	68	ssize_t result;
44	mode_t mode; /* open */	69	mode_t mode; /* open */
45	int errorno;	70	int errorno;
46	SV data, callback, *fh;	71	SV data, callback;
47	void *dataptr;	72	SV fh, fh2;
		73	void dataptr, data2ptr;
48	STRLEN dataoffset;	74	STRLEN dataoffset;
49		75
50	Stat_t *statdata;	76	Stat_t *statdata;
51	} aio_cb;	77	} aio_cb;
52		78
53	typedef aio_cb *aio_req;	79	typedef aio_cb *aio_req;
54		80
55	static int started;	81	static int started, wanted;
56	static volatile int nreqs;	82	static volatile int nreqs;
57	static int max_outstanding = 1<<30;	83	static int max_outstanding = 1<<30;
58	static int respipe [2];	84	static int respipe [2];
59		85
60	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63		89
64	static volatile aio_req reqs, reqe; /* queue start, queue end */	90	static volatile aio_req reqs, reqe; /* queue start, queue end */
65	static volatile aio_req ress, rese; /* queue start, queue end */	91	static volatile aio_req ress, rese; /* queue start, queue end */
66		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
67	static void	116	static void
68	poll_wait ()	117	poll_wait ()
69	{	118	{
70	if (nreqs && !ress)	119	if (nreqs && !ress)
71	{	120	{
…		…
80	static int	129	static int
81	poll_cb ()	130	poll_cb ()
82	{	131	{
83	dSP;	132	dSP;
84	int count = 0;	133	int count = 0;
		134	int do_croak = 0;
85	aio_req req, prv;	135	aio_req req;
86		136
		137	for (;;)
		138	{
87	pthread_mutex_lock (&reslock);	139	pthread_mutex_lock (&reslock);
		140	req = ress;
88		141
89	{	142	if (req)
		143	{
		144	ress = req->next;
		145
		146	if (!ress)
		147	{
90	/* read any signals sent by the worker threads */	148	/* read any signals sent by the worker threads */
91	char buf [32];	149	char buf [32];
92	while (read (respipe [0], buf, 32) > 0)	150	while (read (respipe [0], buf, 32) == 32)
		151	;
		152
		153	rese = 0;
		154	}
93	;	155	}
94	}
95		156
96	req = ress;
97	ress = rese = 0;
98
99	pthread_mutex_unlock (&reslock);	157	pthread_mutex_unlock (&reslock);
100		158
101	while (req)	159	if (!req)
102	{	160	break;
		161
103	nreqs--;	162	nreqs--;
104		163
105	if (req->type == REQ_QUIT)	164	if (req->type == REQ_QUIT)
106	started--;	165	started--;
107	else	166	else
108	{	167	{
109	int errorno = errno;	168	int errorno = errno;
110	errno = req->errorno;	169	errno = req->errorno;
111		170
112	if (req->type == REQ_READ)	171	if (req->type == REQ_READ)
113	SvCUR_set (req->data, req->dataoffset	172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
114	+ req->result > 0 ? req->result : 0);
115		173
		174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		175	SvREADONLY_off (req->data);
		176
116	if (req->data)	177	if (req->statdata)
117	SvREFCNT_dec (req->data);
118
119	if (req->fh)
120	SvREFCNT_dec (req->fh);
121
122	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
123	{	178	{
124	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125	PL_laststatval = req->result;	180	PL_laststatval = req->result;
126	PL_statcache = *(req->statdata);	181	PL_statcache = *(req->statdata);
127
128	Safefree (req->statdata);
129	}	182	}
130		183
131	ENTER;	184	ENTER;
132	PUSHMARK (SP);	185	PUSHMARK (SP);
133	XPUSHs (sv_2mortal (newSViv (req->result)));
134		186
135	if (req->type == REQ_OPEN)	187	if (req->type == REQ_READDIR)
136	{	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	{
137	/* convert fd to fh */	216	/* convert fd to fh */
138	SV *fh;	217	SV *fh;
139		218
140	PUTBACK;	219	PUTBACK;
141	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
142	SPAGAIN;	221	SPAGAIN;
143		222
144	fh = SvREFCNT_inc (POPs);	223	fh = SvREFCNT_inc (POPs);
145		224
146	PUSHMARK (SP);	225	PUSHMARK (SP);
147	XPUSHs (sv_2mortal (fh));	226	XPUSHs (sv_2mortal (fh));
		227	}
148	}	228	}
149		229
150	if (SvOK (req->callback))	230	if (SvOK (req->callback))
151	{	231	{
152	PUTBACK;	232	PUTBACK;
153	call_sv (req->callback, G_VOID \| G_EVAL);	233	call_sv (req->callback, G_VOID \| G_EVAL);
154	SPAGAIN;	234	SPAGAIN;
		235
		236	if (SvTRUE (ERRSV))
		237	{
		238	free_req (req);
		239	croak (0);
		240	}
155	}	241	}
156		242
157	LEAVE;	243	LEAVE;
158
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161		244
162	errno = errorno;	245	errno = errorno;
163	count++;	246	count++;
164	}	247	}
165		248
166	prv = req;	249	free_req (req);
167	req = req->next;
168	Safefree (prv);
169
170	/* TODO: croak on errors? */
171	}	250	}
172		251
173	return count;	252	return count;
174	}	253	}
175		254
…		…
196	}	275	}
197		276
198	static void	277	static void
199	send_req (aio_req req)	278	send_req (aio_req req)
200	{	279	{
		280	while (started < wanted && nreqs >= started)
		281	start_thread ();
		282
201	nreqs++;	283	nreqs++;
202		284
203	pthread_mutex_lock (&reqlock);	285	pthread_mutex_lock (&reqlock);
204		286
205	req->next = 0;	287	req->next = 0;
…		…
213	reqe = reqs = req;	295	reqe = reqs = req;
214		296
215	pthread_cond_signal (&reqwait);	297	pthread_cond_signal (&reqwait);
216	pthread_mutex_unlock (&reqlock);	298	pthread_mutex_unlock (&reqlock);
217		299
218	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)
219	{	342	{
220	poll_wait ();	343	poll_wait ();
221	poll_cb ();	344	poll_cb ();
222	}	345	}
223	}	346	}
224		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
225	static void	437	static int
226	end_thread (void)	438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
227	{	439	{
228	aio_req req;	440	struct dirent *e;
229	New (0, req, 1, aio_cb);	441	int errorno;
230	req->type = REQ_QUIT;
231		442
232	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;
233	}	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	/*****************************************************************************/
234		621
235	static void *	622	static void *
236	aio_proc (void *thr_arg)	623	aio_proc (void *thr_arg)
237	{	624	{
238	aio_req req;	625	aio_req req;
…		…
264		651
265	type = req->type;	652	type = req->type;
266		653
267	switch (type)	654	switch (type)
268	{	655	{
269	#if HAVE_PREADWRITE
270	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;
271	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;
272	#else
273	# error "pread/pwrite cannot be emulated, fix your os"
274	#endif
275		658
276	#if HAVE_READAHEAD
277	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;
278	#else	660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
279	// TODO: emulate
280	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
281	#endif
282		661
283	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
284	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
285	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
286		665
287	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;
288	case REQ_CLOSE: req->result = close (req->fd); break;	667	case REQ_CLOSE: req->result = close (req->fd); break;
289	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_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
		672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
290		673
291	case REQ_FDATASYNC:	674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
292	#if HAVE_FDATASYNC
293	req->result = fdatasync (req->fd); break;
294	#endif
295	case REQ_FSYNC: req->result = fsync (req->fd); break;	675	case REQ_FSYNC: req->result = fsync (req->fd); break;
		676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
296		677
297	case REQ_QUIT:	678	case REQ_QUIT:
298	break;	679	break;
299		680
300	default:	681	default:
…		…
326	while (type != REQ_QUIT);	707	while (type != REQ_QUIT);
327		708
328	return 0;	709	return 0;
329	}	710	}
330		711
		712	/*****************************************************************************/
		713
		714	static void atfork_prepare (void)
		715	{
		716	pthread_mutex_lock (&reqlock);
		717	pthread_mutex_lock (&reslock);
		718	#if !HAVE_PREADWRITE
		719	pthread_mutex_lock (&preadwritelock);
		720	#endif
		721	#if !HAVE_READDIR_R
		722	pthread_mutex_lock (&readdirlock);
		723	#endif
		724	}
		725
		726	static void atfork_parent (void)
		727	{
		728	#if !HAVE_READDIR_R
		729	pthread_mutex_unlock (&readdirlock);
		730	#endif
		731	#if !HAVE_PREADWRITE
		732	pthread_mutex_unlock (&preadwritelock);
		733	#endif
		734	pthread_mutex_unlock (&reslock);
		735	pthread_mutex_unlock (&reqlock);
		736	}
		737
		738	static void atfork_child (void)
		739	{
		740	aio_req prv;
		741
		742	started = 0;
		743
		744	while (reqs)
		745	{
		746	prv = reqs;
		747	reqs = prv->next;
		748	free_req (prv);
		749	}
		750
		751	reqs = reqe = 0;
		752
		753	while (ress)
		754	{
		755	prv = ress;
		756	ress = prv->next;
		757	free_req (prv);
		758	}
		759
		760	ress = rese = 0;
		761
		762	close (respipe [0]);
		763	close (respipe [1]);
		764	create_pipe ();
		765
		766	atfork_parent ();
		767	}
		768
		769	#define dREQ \
		770	aio_req req; \
		771	\
		772	if (SvOK (callback) && !SvROK (callback)) \
		773	croak ("clalback must be undef or of reference type"); \
		774	\
		775	Newz (0, req, 1, aio_cb); \
		776	if (!req) \
		777	croak ("out of memory during aio_req allocation"); \
		778	\
		779	req->callback = newSVsv (callback);
		780
331	MODULE = IO::AIO PACKAGE = IO::AIO	781	MODULE = IO::AIO PACKAGE = IO::AIO
332		782
333	PROTOTYPES: ENABLE	783	PROTOTYPES: ENABLE
334		784
335	BOOT:	785	BOOT:
336	{	786	{
337	if (pipe (respipe))	787	create_pipe ();
338	croak ("unable to initialize result pipe");	788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
339
340	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
341	croak ("cannot set result pipe to nonblocking mode");
342
343	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
344	croak ("cannot set result pipe to nonblocking mode");
345	}	789	}
346		790
347	void	791	void
348	min_parallel(nthreads)	792	min_parallel (nthreads)
349	int nthreads	793	int nthreads
350	PROTOTYPE: $	794	PROTOTYPE: $
351	CODE:
352	while (nthreads > started)
353	start_thread ();
354		795
355	void	796	void
356	max_parallel(nthreads)	797	max_parallel (nthreads)
357	int nthreads	798	int nthreads
358	PROTOTYPE: $	799	PROTOTYPE: $
359	CODE:
360	{
361	int cur = started;
362	while (cur > nthreads)
363	{
364	end_thread ();
365	cur--;
366	}
367
368	while (started > nthreads)
369	{
370	poll_wait ();
371	poll_cb ();
372	}
373	}
374		800
375	int	801	int
376	max_outstanding(nreqs)	802	max_outstanding (nreqs)
377	int nreqs	803	int nreqs
378	PROTOTYPE: $	804	PROTOTYPE: $
379	CODE:	805	CODE:
380	RETVAL = max_outstanding;	806	RETVAL = max_outstanding;
381	max_outstanding = nreqs;	807	max_outstanding = nreqs;
382		808
383	void	809	void
384	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	810	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
385	SV * pathname	811	SV * pathname
386	int flags	812	int flags
387	int mode	813	int mode
388	SV * callback	814	SV * callback
389	PROTOTYPE: $$$;$	815	PROTOTYPE: $$$;$
390	CODE:	816	CODE:
391	{	817	{
392	aio_req req;	818	dREQ;
393
394	Newz (0, req, 1, aio_cb);
395
396	if (!req)
397	croak ("out of memory during aio_req allocation");
398		819
399	req->type = REQ_OPEN;	820	req->type = REQ_OPEN;
400	req->data = newSVsv (pathname);	821	req->data = newSVsv (pathname);
401	req->dataptr = SvPV_nolen (req->data);	822	req->dataptr = SvPVbyte_nolen (req->data);
402	req->fd = flags;	823	req->fd = flags;
403	req->mode = mode;	824	req->mode = mode;
404	req->callback = SvREFCNT_inc (callback);
405		825
406	send_req (req);	826	send_req (req);
407	}	827	}
408		828
409	void	829	void
410	aio_close(fh,callback=&PL_sv_undef)	830	aio_close (fh,callback=&PL_sv_undef)
411	SV * fh	831	SV * fh
412	SV * callback	832	SV * callback
413	PROTOTYPE: $;$	833	PROTOTYPE: $;$
414	ALIAS:	834	ALIAS:
415	aio_close = REQ_CLOSE	835	aio_close = REQ_CLOSE
416	aio_fsync = REQ_FSYNC	836	aio_fsync = REQ_FSYNC
417	aio_fdatasync = REQ_FDATASYNC	837	aio_fdatasync = REQ_FDATASYNC
418	CODE:	838	CODE:
419	{	839	{
420	aio_req req;	840	dREQ;
421
422	Newz (0, req, 1, aio_cb);
423
424	if (!req)
425	croak ("out of memory during aio_req allocation");
426		841
427	req->type = ix;	842	req->type = ix;
428	req->fh = newSVsv (fh);	843	req->fh = newSVsv (fh);
429	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
430	req->callback = SvREFCNT_inc (callback);
431		845
432	send_req (req);	846	send_req (req);
433	}	847	}
434		848
435	void	849	void
436	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
437	SV * fh	851	SV * fh
438	UV offset	852	UV offset
439	IV length	853	UV length
440	SV * data	854	SV * data
441	IV dataoffset	855	UV dataoffset
442	SV * callback	856	SV * callback
443	ALIAS:	857	ALIAS:
444	aio_read = REQ_READ	858	aio_read = REQ_READ
445	aio_write = REQ_WRITE	859	aio_write = REQ_WRITE
446	PROTOTYPE: $$$$$;$	860	PROTOTYPE: $$$$$;$
447	CODE:	861	CODE:
448	{	862	{
449	aio_req req;	863	aio_req req;
450	STRLEN svlen;	864	STRLEN svlen;
451	char *svptr = SvPV (data, svlen);	865	char *svptr = SvPVbyte (data, svlen);
452		866
453	SvUPGRADE (data, SVt_PV);	867	SvUPGRADE (data, SVt_PV);
454	SvPOK_on (data);	868	SvPOK_on (data);
455		869
456	if (dataoffset < 0)	870	if (dataoffset < 0)
…		…
472	}	886	}
473		887
474	if (length < 0)	888	if (length < 0)
475	croak ("length must not be negative");	889	croak ("length must not be negative");
476		890
477	Newz (0, req, 1, aio_cb);	891	{
		892	dREQ;
478		893
479	if (!req)
480	croak ("out of memory during aio_req allocation");
481
482	req->type = ix;	894	req->type = ix;
483	req->fh = newSVsv (fh);	895	req->fh = newSVsv (fh);
484	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	896	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
485	: IoOFP (sv_2io (fh)));	897	: IoOFP (sv_2io (fh)));
486	req->offset = offset;	898	req->offset = offset;
		899	req->length = length;
		900	req->data = SvREFCNT_inc (data);
		901	req->dataptr = (char *)svptr + dataoffset;
		902
		903	if (!SvREADONLY (data))
		904	{
		905	SvREADONLY_on (data);
		906	req->data2ptr = (void *)data;
		907	}
		908
		909	send_req (req);
		910	}
		911	}
		912
		913	void
		914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		915	SV * out_fh
		916	SV * in_fh
		917	UV in_offset
		918	UV length
		919	SV * callback
		920	PROTOTYPE: $$$$;$
		921	CODE:
		922	{
		923	dREQ;
		924
		925	req->type = REQ_SENDFILE;
		926	req->fh = newSVsv (out_fh);
		927	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		928	req->fh2 = newSVsv (in_fh);
		929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		930	req->offset = in_offset;
487	req->length = length;	931	req->length = length;
488	req->data = SvREFCNT_inc (data);
489	req->dataptr = (char *)svptr + dataoffset;
490	req->callback = SvREFCNT_inc (callback);
491		932
492	send_req (req);	933	send_req (req);
493	}	934	}
494		935
495	void	936	void
496	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
497	SV * fh	938	SV * fh
498	UV offset	939	UV offset
499	IV length	940	IV length
500	SV * callback	941	SV * callback
501	PROTOTYPE: $$$;$	942	PROTOTYPE: $$$;$
502	CODE:	943	CODE:
503	{	944	{
504	aio_req req;	945	dREQ;
505
506	if (length < 0)
507	croak ("length must not be negative");
508
509	Newz (0, req, 1, aio_cb);
510
511	if (!req)
512	croak ("out of memory during aio_req allocation");
513		946
514	req->type = REQ_READAHEAD;	947	req->type = REQ_READAHEAD;
515	req->fh = newSVsv (fh);	948	req->fh = newSVsv (fh);
516	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
517	req->offset = offset;	950	req->offset = offset;
518	req->length = length;	951	req->length = length;
519	req->callback = SvREFCNT_inc (callback);
520		952
521	send_req (req);	953	send_req (req);
522	}	954	}
523		955
524	void	956	void
525	aio_stat(fh_or_path,callback=&PL_sv_undef)	957	aio_stat (fh_or_path,callback=&PL_sv_undef)
526	SV * fh_or_path	958	SV * fh_or_path
527	SV * callback	959	SV * callback
528	ALIAS:	960	ALIAS:
529	aio_stat = REQ_STAT	961	aio_stat = REQ_STAT
530	aio_lstat = REQ_LSTAT	962	aio_lstat = REQ_LSTAT
531	CODE:	963	CODE:
532	{	964	{
533	aio_req req;	965	dREQ;
534
535	Newz (0, req, 1, aio_cb);
536
537	if (!req)
538	croak ("out of memory during aio_req allocation");
539		966
540	New (0, req->statdata, 1, Stat_t);	967	New (0, req->statdata, 1, Stat_t);
541
542	if (!req->statdata)	968	if (!req->statdata)
		969	{
		970	free_req (req);
543	croak ("out of memory during aio_req->statdata allocation");	971	croak ("out of memory during aio_req->statdata allocation");
		972	}
544		973
545	if (SvPOK (fh_or_path))	974	if (SvPOK (fh_or_path))
546	{	975	{
547	req->type = ix;	976	req->type = ix;
548	req->data = newSVsv (fh_or_path);	977	req->data = newSVsv (fh_or_path);
549	req->dataptr = SvPV_nolen (req->data);	978	req->dataptr = SvPVbyte_nolen (req->data);
550	}	979	}
551	else	980	else
552	{	981	{
553	req->type = REQ_FSTAT;	982	req->type = REQ_FSTAT;
554	req->fh = newSVsv (fh_or_path);	983	req->fh = newSVsv (fh_or_path);
555	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
556	}	985	}
557		986
558	req->callback = SvREFCNT_inc (callback);
559
560	send_req (req);	987	send_req (req);
561	}	988	}
562		989
563	void	990	void
564	aio_unlink(pathname,callback=&PL_sv_undef)	991	aio_unlink (pathname,callback=&PL_sv_undef)
565	SV * pathname	992	SV * pathname
566	SV * callback	993	SV * callback
		994	ALIAS:
		995	aio_unlink = REQ_UNLINK
		996	aio_rmdir = REQ_RMDIR
		997	aio_readdir = REQ_READDIR
567	CODE:	998	CODE:
568	{	999	{
569	aio_req req;	1000	dREQ;
570		1001
571	Newz (0, req, 1, aio_cb);	1002	req->type = ix;
572
573	if (!req)
574	croak ("out of memory during aio_req allocation");
575
576	req->type = REQ_UNLINK;
577	req->data = newSVsv (pathname);	1003	req->data = newSVsv (pathname);
578	req->dataptr = SvPV_nolen (req->data);	1004	req->dataptr = SvPVbyte_nolen (req->data);
579	req->callback = SvREFCNT_inc (callback);
580		1005
581	send_req (req);	1006	send_req (req);
582	}	1007	}
583		1008
584	void	1009	void
		1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1011	SV * oldpath
		1012	SV * newpath
		1013	SV * callback
		1014	ALIAS:
		1015	aio_link = REQ_LINK
		1016	aio_symlink = REQ_SYMLINK
		1017	aio_rename = REQ_RENAME
		1018	CODE:
		1019	{
		1020	dREQ;
		1021
		1022	req->type = ix;
		1023	req->fh = newSVsv (oldpath);
		1024	req->data2ptr = SvPVbyte_nolen (req->fh);
		1025	req->data = newSVsv (newpath);
		1026	req->dataptr = SvPVbyte_nolen (req->data);
		1027
		1028	send_req (req);
		1029	}
		1030
		1031	void
585	flush()	1032	flush ()
586	PROTOTYPE:	1033	PROTOTYPE:
587	CODE:	1034	CODE:
588	while (nreqs)	1035	while (nreqs)
589	{	1036	{
590	poll_wait ();	1037	poll_wait ();

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs. Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC