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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC

…		…
1	#ifndef _REENTRANT
2	# define _REENTRANT 1	1	#define _REENTRANT 1
3	#endif
4	#include <errno.h>	2	#include <errno.h>
5		3
6	#include "EXTERN.h"	4	#include "EXTERN.h"
7	#include "perl.h"	5	#include "perl.h"
8	#include "XSUB.h"	6	#include "XSUB.h"
9		7
10	#include "autoconf/config.h"	8	#include "autoconf/config.h"
11		9
		10	#include <pthread.h>
		11
		12	#include <stddef.h>
		13	#include <errno.h>
		14	#include <sys/time.h>
		15	#include <sys/select.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
13	#include <sys/stat.h>	17	#include <sys/stat.h>
14		18	#include <limits.h>
15	#include <unistd.h>	19	#include <unistd.h>
16	#include <fcntl.h>	20	#include <fcntl.h>
17	#include <signal.h>	21	#include <signal.h>
18	#include <sched.h>	22	#include <sched.h>
19		23
20	#include <pthread.h>	24	#if HAVE_SENDFILE
		25	# if __linux
		26	# include <sys/sendfile.h>
		27	# elif __freebsd
		28	# include <sys/socket.h>
		29	# include <sys/uio.h>
		30	# elif __hpux
		31	# include <sys/socket.h>
		32	# elif __solaris /* not yet */
		33	# include <sys/sendfile.h>
		34	# else
		35	# error sendfile support requested but not available
		36	# endif
		37	#endif
21		38
22	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	/* used for struct dirent, AIX doesn't provide it */
23	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	40	#ifndef NAME_MAX
24	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	41	# define NAME_MAX 4096
		42	#endif
25		43
26	#if __ia64	44	#if __ia64
27	# define STACKSIZE 65536	45	# define STACKSIZE 65536
28	#else	46	#else
29	# define STACKSIZE 4096	47	# define STACKSIZE 8192
30	#endif	48	#endif
31		49
32	enum {	50	enum {
33	REQ_QUIT,	51	REQ_QUIT,
34	REQ_OPEN, REQ_CLOSE,	52	REQ_OPEN, REQ_CLOSE,
35	REQ_READ, REQ_WRITE, REQ_READAHEAD,	53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
		54	REQ_SENDFILE,
36	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
		57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
		58	REQ_READDIR,
		59	REQ_LINK, REQ_SYMLINK,
		60	REQ_SLEEP,
		61	REQ_GROUP,
38	};	62	};
39		63
		64	#define AIO_REQ_KLASS "IO::AIO::REQ"
		65	#define AIO_GRP_KLASS "IO::AIO::GRP"
		66
40	typedef struct aio_cb {	67	typedef struct aio_cb
		68	{
		69	struct aio_cb grp, grp_prev, *grp_next;
		70
41	struct aio_cb *volatile next;	71	struct aio_cb *volatile next;
42		72
43	int type;	73	SV self; / the perl counterpart of this request, if any */
44		74
45	int fd;	75	SV data, callback;
		76	SV fh, fh2;
		77	void dataptr, data2ptr;
		78	Stat_t *statdata;
46	off_t offset;	79	off_t offset;
47	size_t length;	80	size_t length;
48	ssize_t result;	81	ssize_t result;
		82
		83	int type;
		84	int fd, fd2;
		85	int errorno;
		86	STRLEN dataoffset;
49	mode_t mode; /* open */	87	mode_t mode; /* open */
50	int errorno;	88	unsigned char cancelled;
51	SV data, callback, *fh;
52	void *dataptr;
53	STRLEN dataoffset;
54
55	Stat_t *statdata;
56	} aio_cb;	89	} aio_cb;
57		90
58	typedef aio_cb *aio_req;	91	typedef aio_cb *aio_req;
		92	typedef aio_cb *aio_req_ornot;
59		93
60	static int started;	94	static int started, wanted;
61	static volatile int nreqs;	95	static volatile int nreqs;
62	static int max_outstanding = 1<<30;	96	static int max_outstanding = 1<<30;
63	static int respipe [2];	97	static int respipe [2];
64		98
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68		102
69	static volatile aio_req reqs, reqe; /* queue start, queue end */	103	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */	104	static volatile aio_req ress, rese; /* queue start, queue end */
71		105
72	static void	106	static void req_free (aio_req req);
73	poll_wait ()	107
		108	/* must be called at most once */
		109	static SV req_sv (aio_req req, const char klass)
		110	{
		111	req->self = (SV *)newHV ();
		112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		113
		114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		115	}
		116
		117	static aio_req SvAIO_REQ (SV *sv)
		118	{
		119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		120	croak ("object of class " AIO_REQ_KLASS " expected");
		121
		122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		123
		124	return mg ? (aio_req)mg->mg_ptr : 0;
		125	}
		126
		127	static void poll_wait ()
74	{	128	{
75	if (nreqs && !ress)	129	if (nreqs && !ress)
76	{	130	{
77	fd_set rfd;	131	fd_set rfd;
78	FD_ZERO(&rfd);	132	FD_ZERO(&rfd);
…		…
80		134
81	select (respipe [0] + 1, &rfd, 0, 0, 0);	135	select (respipe [0] + 1, &rfd, 0, 0, 0);
82	}	136	}
83	}	137	}
84		138
85	static int	139	static void req_invoke (aio_req req)
86	poll_cb ()	140	{
		141	dSP;
		142	int errorno = errno;
		143
		144	if (req->cancelled \|\| !SvOK (req->callback))
		145	return;
		146
		147	errno = req->errorno;
		148
		149	ENTER;
		150	PUSHMARK (SP);
		151
		152	switch (req->type)
		153	{
		154	case REQ_READDIR:
		155	{
		156	SV *rv = &PL_sv_undef;
		157
		158	if (req->result >= 0)
		159	{
		160	char *buf = req->data2ptr;
		161	AV *av = newAV ();
		162
		163	while (req->result)
		164	{
		165	SV *sv = newSVpv (buf, 0);
		166
		167	av_push (av, sv);
		168	buf += SvCUR (sv) + 1;
		169	req->result--;
		170	}
		171
		172	rv = sv_2mortal (newRV_noinc ((SV *)av));
		173	}
		174
		175	XPUSHs (rv);
		176	}
		177	break;
		178
		179	case REQ_OPEN:
		180	{
		181	/* convert fd to fh */
		182	SV *fh;
		183
		184	XPUSHs (sv_2mortal (newSViv (req->result)));
		185	PUTBACK;
		186	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		187	SPAGAIN;
		188
		189	fh = SvREFCNT_inc (POPs);
		190
		191	PUSHMARK (SP);
		192	XPUSHs (sv_2mortal (fh));
		193	}
		194	break;
		195
		196	case REQ_SLEEP:
		197	case REQ_GROUP:
		198	break;
		199
		200	default:
		201	XPUSHs (sv_2mortal (newSViv (req->result)));
		202	break;
		203	}
		204
		205
		206	PUTBACK;
		207	call_sv (req->callback, G_VOID \| G_EVAL);
		208	SPAGAIN;
		209
		210	if (SvTRUE (ERRSV))
		211	{
		212	req_free (req);
		213	croak (0);
		214	}
		215
		216	LEAVE;
		217
		218	errno = errorno;
		219	}
		220
		221	static void req_free (aio_req req)
		222	{
		223	if (req->grp)
		224	{
		225	aio_req grp = req->grp;
		226
		227	/* unlink request */
		228	req->grp_next->grp_prev = req->grp_prev;
		229	req->grp_prev->grp_next = req->grp_next;
		230
		231	if (grp->grp_next == grp && grp->fd)
		232	{
		233	req_invoke (grp);
		234	req_free (grp);
		235	}
		236	}
		237
		238	if (req->self)
		239	{
		240	sv_unmagic (req->self, PERL_MAGIC_ext);
		241	SvREFCNT_dec (req->self);
		242	}
		243
		244	if (req->data)
		245	SvREFCNT_dec (req->data);
		246
		247	if (req->fh)
		248	SvREFCNT_dec (req->fh);
		249
		250	if (req->fh2)
		251	SvREFCNT_dec (req->fh2);
		252
		253	if (req->statdata)
		254	Safefree (req->statdata);
		255
		256	if (req->callback)
		257	SvREFCNT_dec (req->callback);
		258
		259	if (req->type == REQ_READDIR && req->result >= 0)
		260	free (req->data2ptr);
		261
		262	Safefree (req);
		263	}
		264
		265	static void req_cancel (aio_req req)
		266	{
		267	req->cancelled = 1;
		268
		269	if (req->type == REQ_GROUP)
		270	{
		271	aio_req sub;
		272
		273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
		274	req_cancel (sub);
		275	}
		276	}
		277
		278	static int poll_cb ()
87	{	279	{
88	dSP;	280	dSP;
89	int count = 0;	281	int count = 0;
		282	int do_croak = 0;
90	aio_req req, prv;	283	aio_req req;
91		284
		285	for (;;)
		286	{
92	pthread_mutex_lock (&reslock);	287	pthread_mutex_lock (&reslock);
		288	req = ress;
93		289
94	{	290	if (req)
		291	{
		292	ress = req->next;
		293
		294	if (!ress)
		295	{
95	/* read any signals sent by the worker threads */	296	/* read any signals sent by the worker threads */
96	char buf [32];	297	char buf [32];
97	while (read (respipe [0], buf, 32) > 0)	298	while (read (respipe [0], buf, 32) == 32)
		299	;
		300
		301	rese = 0;
		302	}
98	;	303	}
99	}
100		304
101	req = ress;
102	ress = rese = 0;
103
104	pthread_mutex_unlock (&reslock);	305	pthread_mutex_unlock (&reslock);
105		306
106	while (req)	307	if (!req)
107	{	308	break;
		309
108	nreqs--;	310	nreqs--;
109		311
110	if (req->type == REQ_QUIT)	312	if (req->type == REQ_QUIT)
111	started--;	313	started--;
		314	else if (req->type == REQ_GROUP && req->grp_next != req)
		315	{
		316	req->fd = 1; /* mark request as delayed */
		317	continue;
		318	}
112	else	319	else
113	{	320	{
114	int errorno = errno;
115	errno = req->errorno;
116
117	if (req->type == REQ_READ)	321	if (req->type == REQ_READ)
118	SvCUR_set (req->data, req->dataoffset	322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
119	+ req->result > 0 ? req->result : 0);
120		323
		324	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		325	SvREADONLY_off (req->data);
		326
121	if (req->data)	327	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	{	328	{
129	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130	PL_laststatval = req->result;	330	PL_laststatval = req->result;
131	PL_statcache = *(req->statdata);	331	PL_statcache = *(req->statdata);
132
133	Safefree (req->statdata);
134	}	332	}
135		333
136	ENTER;	334	req_invoke (req);
137	PUSHMARK (SP);
138	XPUSHs (sv_2mortal (newSViv (req->result)));
139		335
140	if (req->type == REQ_OPEN)
141	{
142	/* convert fd to fh */
143	SV *fh;
144
145	PUTBACK;
146	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
147	SPAGAIN;
148
149	fh = SvREFCNT_inc (POPs);
150
151	PUSHMARK (SP);
152	XPUSHs (sv_2mortal (fh));
153	}
154
155	if (SvOK (req->callback))
156	{
157	PUTBACK;
158	call_sv (req->callback, G_VOID \| G_EVAL);
159	SPAGAIN;
160	}
161
162	LEAVE;
163
164	if (req->callback)
165	SvREFCNT_dec (req->callback);
166
167	errno = errorno;
168	count++;	336	count++;
169	}	337	}
170		338
171	prv = req;
172	req = req->next;
173	Safefree (prv);	339	req_free (req);
174
175	/* TODO: croak on errors? */
176	}	340	}
177		341
178	return count;	342	return count;
179	}	343	}
180		344
181	static void aio_proc(void arg);	345	static void aio_proc(void arg);
182		346
183	static void
184	start_thread (void)	347	static void start_thread (void)
185	{	348	{
186	sigset_t fullsigset, oldsigset;	349	sigset_t fullsigset, oldsigset;
187	pthread_t tid;	350	pthread_t tid;
188	pthread_attr_t attr;	351	pthread_attr_t attr;
189		352
…		…
198	started++;	361	started++;
199		362
200	sigprocmask (SIG_SETMASK, &oldsigset, 0);	363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
201	}	364	}
202		365
203	static void	366	static void req_send (aio_req req)
204	send_req (aio_req req)
205	{	367	{
		368	while (started < wanted && nreqs >= started)
		369	start_thread ();
		370
206	nreqs++;	371	nreqs++;
207		372
208	pthread_mutex_lock (&reqlock);	373	pthread_mutex_lock (&reqlock);
209		374
210	req->next = 0;	375	req->next = 0;
…		…
218	reqe = reqs = req;	383	reqe = reqs = req;
219		384
220	pthread_cond_signal (&reqwait);	385	pthread_cond_signal (&reqwait);
221	pthread_mutex_unlock (&reqlock);	386	pthread_mutex_unlock (&reqlock);
222		387
223	while (nreqs > max_outstanding)	388	if (nreqs > max_outstanding)
		389	for (;;)
		390	{
		391	poll_cb ();
		392
		393	if (nreqs <= max_outstanding)
		394	break;
		395
		396	poll_wait ();
		397	}
		398	}
		399
		400	static void end_thread (void)
		401	{
		402	aio_req req;
		403	Newz (0, req, 1, aio_cb);
		404	req->type = REQ_QUIT;
		405
		406	req_send (req);
		407	}
		408
		409	static void min_parallel (int nthreads)
		410	{
		411	if (wanted < nthreads)
		412	wanted = nthreads;
		413	}
		414
		415	static void max_parallel (int nthreads)
		416	{
		417	int cur = started;
		418
		419	if (wanted > nthreads)
		420	wanted = nthreads;
		421
		422	while (cur > wanted)
		423	{
		424	end_thread ();
		425	cur--;
		426	}
		427
		428	while (started > wanted)
224	{	429	{
225	poll_wait ();	430	poll_wait ();
226	poll_cb ();	431	poll_cb ();
227	}	432	}
228	}	433	}
229		434
230	static void	435	static void create_pipe ()
231	end_thread (void)
232	{	436	{
233	aio_req req;	437	if (pipe (respipe))
234	New (0, req, 1, aio_cb);	438	croak ("unable to initialize result pipe");
235	req->type = REQ_QUIT;
236		439
237	send_req (req);	440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
238	}	441	croak ("cannot set result pipe to nonblocking mode");
239		442
		443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		444	croak ("cannot set result pipe to nonblocking mode");
		445	}
		446
		447	/*****************************************************************************/
240	/* work around various missing functions */	448	/* work around various missing functions */
241		449
242	#if !HAVE_PREADWRITE	450	#if !HAVE_PREADWRITE
243	# define pread aio_pread	451	# define pread aio_pread
244	# define pwrite aio_pwrite	452	# define pwrite aio_pwrite
…		…
246	/*	454	/*
247	* make our pread/pwrite safe against themselves, but not against	455	* make our pread/pwrite safe against themselves, but not against
248	* normal read/write by using a mutex. slows down execution a lot,	456	* normal read/write by using a mutex. slows down execution a lot,
249	* but that's your problem, not mine.	457	* but that's your problem, not mine.
250	*/	458	*/
251	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
252		460
253	static ssize_t	461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
254	pread (int fd, void *buf, size_t count, off_t offset)
255	{	462	{
256	ssize_t res;	463	ssize_t res;
257	off_t ooffset;	464	off_t ooffset;
258		465
259	pthread_mutex_lock (&iolock);	466	pthread_mutex_lock (&preadwritelock);
260	ooffset = lseek (fd, 0, SEEK_CUR);	467	ooffset = lseek (fd, 0, SEEK_CUR);
261	lseek (fd, offset, SEEK_SET);	468	lseek (fd, offset, SEEK_SET);
262	res = read (fd, buf, count);	469	res = read (fd, buf, count);
263	lseek (fd, ooffset, SEEK_SET);	470	lseek (fd, ooffset, SEEK_SET);
264	pthread_mutex_unlock (&iolock);	471	pthread_mutex_unlock (&preadwritelock);
265		472
266	return res;	473	return res;
267	}	474	}
268		475
269	static ssize_t
270	pwrite (int fd, void *buf, size_t count, off_t offset)	476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
271	{	477	{
272	ssize_t res;	478	ssize_t res;
273	off_t ooffset;	479	off_t ooffset;
274		480
275	pthread_mutex_lock (&iolock);	481	pthread_mutex_lock (&preadwritelock);
276	ooffset = lseek (fd, 0, SEEK_CUR);	482	ooffset = lseek (fd, 0, SEEK_CUR);
277	lseek (fd, offset, SEEK_SET);	483	lseek (fd, offset, SEEK_SET);
278	res = write (fd, buf, count);	484	res = write (fd, buf, count);
279	lseek (fd, offset, SEEK_SET);	485	lseek (fd, offset, SEEK_SET);
280	pthread_mutex_unlock (&iolock);	486	pthread_mutex_unlock (&preadwritelock);
281		487
282	return res;	488	return res;
283	}	489	}
284	#endif	490	#endif
285		491
…		…
288	#endif	494	#endif
289		495
290	#if !HAVE_READAHEAD	496	#if !HAVE_READAHEAD
291	# define readahead aio_readahead	497	# define readahead aio_readahead
292		498
		499	static ssize_t readahead (int fd, off_t offset, size_t count)
		500	{
293	static char readahead_buf[4096];	501	char readahead_buf[4096];
294		502
295	static ssize_t
296	readahead (int fd, off_t offset, size_t count)
297	{
298	while (count > 0)	503	while (count > 0)
299	{	504	{
300	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301		506
302	pread (fd, readahead_buf, len, offset);	507	pread (fd, readahead_buf, len, offset);
…		…
306		511
307	errno = 0;	512	errno = 0;
308	}	513	}
309	#endif	514	#endif
310		515
311	static void *	516	#if !HAVE_READDIR_R
		517	# define readdir_r aio_readdir_r
		518
		519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		520
		521	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		522	{
		523	struct dirent *e;
		524	int errorno;
		525
		526	pthread_mutex_lock (&readdirlock);
		527
		528	e = readdir (dirp);
		529	errorno = errno;
		530
		531	if (e)
		532	{
		533	*res = ent;
		534	strcpy (ent->d_name, e->d_name);
		535	}
		536	else
		537	*res = 0;
		538
		539	pthread_mutex_unlock (&readdirlock);
		540
		541	errno = errorno;
		542	return e ? 0 : -1;
		543	}
		544	#endif
		545
		546	/* sendfile always needs emulation */
		547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
		548	{
		549	ssize_t res;
		550
		551	if (!count)
		552	return 0;
		553
		554	#if HAVE_SENDFILE
		555	# if __linux
		556	res = sendfile (ofd, ifd, &offset, count);
		557
		558	# elif __freebsd
		559	/*
		560	* Of course, the freebsd sendfile is a dire hack with no thoughts
		561	* wasted on making it similar to other I/O functions.
		562	*/
		563	{
		564	off_t sbytes;
		565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
		566
		567	if (res < 0 && sbytes)
		568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
		569	res = sbytes;
		570	}
		571
		572	# elif __hpux
		573	res = sendfile (ofd, ifd, offset, count, 0, 0);
		574
		575	# elif __solaris
		576	{
		577	struct sendfilevec vec;
		578	size_t sbytes;
		579
		580	vec.sfv_fd = ifd;
		581	vec.sfv_flag = 0;
		582	vec.sfv_off = offset;
		583	vec.sfv_len = count;
		584
		585	res = sendfilev (ofd, &vec, 1, &sbytes);
		586
		587	if (res < 0 && sbytes)
		588	res = sbytes;
		589	}
		590
		591	# endif
		592	#else
		593	res = -1;
		594	errno = ENOSYS;
		595	#endif
		596
		597	if (res < 0
		598	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		599	#if __solaris
		600	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		601	#endif
		602	)
		603	)
		604	{
		605	/* emulate sendfile. this is a major pain in the ass */
		606	char buf[4096];
		607	res = 0;
		608
		609	while (count)
		610	{
		611	ssize_t cnt;
		612
		613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
		614
		615	if (cnt <= 0)
		616	{
		617	if (cnt && !res) res = -1;
		618	break;
		619	}
		620
		621	cnt = write (ofd, buf, cnt);
		622
		623	if (cnt <= 0)
		624	{
		625	if (cnt && !res) res = -1;
		626	break;
		627	}
		628
		629	offset += cnt;
		630	res += cnt;
		631	count -= cnt;
		632	}
		633	}
		634
		635	return res;
		636	}
		637
		638	/* read a full directory */
		639	static int scandir_ (const char path, void *namesp)
		640	{
		641	DIR *dirp = opendir (path);
		642	union
		643	{
		644	struct dirent d;
		645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		646	} u;
		647	struct dirent *entp;
		648	char name, names;
		649	int memlen = 4096;
		650	int memofs = 0;
		651	int res = 0;
		652	int errorno;
		653
		654	if (!dirp)
		655	return -1;
		656
		657	names = malloc (memlen);
		658
		659	for (;;)
		660	{
		661	errno = 0, readdir_r (dirp, &u.d, &entp);
		662
		663	if (!entp)
		664	break;
		665
		666	name = entp->d_name;
		667
		668	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		669	{
		670	int len = strlen (name) + 1;
		671
		672	res++;
		673
		674	while (memofs + len > memlen)
		675	{
		676	memlen *= 2;
		677	names = realloc (names, memlen);
		678	if (!names)
		679	break;
		680	}
		681
		682	memcpy (names + memofs, name, len);
		683	memofs += len;
		684	}
		685	}
		686
		687	errorno = errno;
		688	closedir (dirp);
		689
		690	if (errorno)
		691	{
		692	free (names);
		693	errno = errorno;
		694	res = -1;
		695	}
		696
		697	namesp = (void )names;
		698	return res;
		699	}
		700
		701	/*****************************************************************************/
		702
312	aio_proc (void *thr_arg)	703	static void aio_proc (void thr_arg)
313	{	704	{
314	aio_req req;	705	aio_req req;
315	int type;	706	int type;
316		707
317	do	708	do
…		…
336		727
337	pthread_mutex_unlock (&reqlock);	728	pthread_mutex_unlock (&reqlock);
338		729
339	errno = 0; /* strictly unnecessary */	730	errno = 0; /* strictly unnecessary */
340		731
341	type = req->type;	732	if (!req->cancelled)
342
343	switch (type)	733	switch (req->type)
344	{	734	{
345	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	735	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;	736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
347		737
348	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
		739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
349		740
350	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353		744
354	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355	case REQ_CLOSE: req->result = close (req->fd); break;	746	case REQ_CLOSE: req->result = close (req->fd); break;
356	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
		748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
		751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
357		752
358	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359	case REQ_FSYNC: req->result = fsync (req->fd); break;	754	case REQ_FSYNC: req->result = fsync (req->fd); break;
		755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
360		756
		757	case REQ_SLEEP:
		758	{
		759	struct timeval tv;
		760
		761	tv.tv_sec = req->fd;
		762	tv.tv_usec = req->fd2;
		763
		764	req->result = select (0, 0, 0, 0, &tv);
		765	}
		766
361	case REQ_QUIT:	767	case REQ_QUIT:
362	break;	768	break;
363		769
364	default:	770	default:
365	req->result = ENOSYS;	771	req->result = ENOSYS;
366	break;	772	break;
367	}	773	}
368		774
369	req->errorno = errno;	775	req->errorno = errno;
370		776
371	pthread_mutex_lock (&reslock);	777	pthread_mutex_lock (&reslock);
372		778
…		…
390	while (type != REQ_QUIT);	796	while (type != REQ_QUIT);
391		797
392	return 0;	798	return 0;
393	}	799	}
394		800
		801	/*****************************************************************************/
		802
		803	static void atfork_prepare (void)
		804	{
		805	pthread_mutex_lock (&reqlock);
		806	pthread_mutex_lock (&reslock);
		807	#if !HAVE_PREADWRITE
		808	pthread_mutex_lock (&preadwritelock);
		809	#endif
		810	#if !HAVE_READDIR_R
		811	pthread_mutex_lock (&readdirlock);
		812	#endif
		813	}
		814
		815	static void atfork_parent (void)
		816	{
		817	#if !HAVE_READDIR_R
		818	pthread_mutex_unlock (&readdirlock);
		819	#endif
		820	#if !HAVE_PREADWRITE
		821	pthread_mutex_unlock (&preadwritelock);
		822	#endif
		823	pthread_mutex_unlock (&reslock);
		824	pthread_mutex_unlock (&reqlock);
		825	}
		826
		827	static void atfork_child (void)
		828	{
		829	aio_req prv;
		830
		831	started = 0;
		832
		833	while (reqs)
		834	{
		835	prv = reqs;
		836	reqs = prv->next;
		837	req_free (prv);
		838	}
		839
		840	reqs = reqe = 0;
		841
		842	while (ress)
		843	{
		844	prv = ress;
		845	ress = prv->next;
		846	req_free (prv);
		847	}
		848
		849	ress = rese = 0;
		850
		851	close (respipe [0]);
		852	close (respipe [1]);
		853	create_pipe ();
		854
		855	atfork_parent ();
		856	}
		857
		858	#define dREQ \
		859	aio_req req; \
		860	\
		861	if (SvOK (callback) && !SvROK (callback)) \
		862	croak ("callback must be undef or of reference type"); \
		863	\
		864	Newz (0, req, 1, aio_cb); \
		865	if (!req) \
		866	croak ("out of memory during aio_req allocation"); \
		867	\
		868	req->callback = newSVsv (callback)
		869
		870	#define REQ_SEND \
		871	req_send (req); \
		872	\
		873	if (GIMME_V != G_VOID) \
		874	XPUSHs (req_sv (req, AIO_REQ_KLASS));
		875
395	MODULE = IO::AIO PACKAGE = IO::AIO	876	MODULE = IO::AIO PACKAGE = IO::AIO
396		877
397	PROTOTYPES: ENABLE	878	PROTOTYPES: ENABLE
398		879
399	BOOT:	880	BOOT:
400	{	881	{
401	if (pipe (respipe))	882	HV *stash = gv_stashpv ("IO::AIO", 1);
402	croak ("unable to initialize result pipe");	883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
403		886
404	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	887	create_pipe ();
405	croak ("cannot set result pipe to nonblocking mode");	888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
406
407	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
408	croak ("cannot set result pipe to nonblocking mode");
409	}	889	}
410		890
411	void	891	void
412	min_parallel(nthreads)	892	min_parallel (nthreads)
413	int nthreads	893	int nthreads
414	PROTOTYPE: $	894	PROTOTYPE: $
415	CODE:
416	while (nthreads > started)
417	start_thread ();
418		895
419	void	896	void
420	max_parallel(nthreads)	897	max_parallel (nthreads)
421	int nthreads	898	int nthreads
422	PROTOTYPE: $	899	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		900
439	int	901	int
440	max_outstanding(nreqs)	902	max_outstanding (nreqs)
441	int nreqs	903	int nreqs
442	PROTOTYPE: $	904	PROTOTYPE: $
443	CODE:	905	CODE:
444	RETVAL = max_outstanding;	906	RETVAL = max_outstanding;
445	max_outstanding = nreqs;	907	max_outstanding = nreqs;
446		908
447	void	909	void
448	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
449	SV * pathname	911	SV * pathname
450	int flags	912	int flags
451	int mode	913	int mode
452	SV * callback	914	SV * callback
453	PROTOTYPE: $$$;$	915	PROTOTYPE: $$$;$
454	CODE:	916	PPCODE:
455	{	917	{
456	aio_req req;	918	dREQ;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462		919
463	req->type = REQ_OPEN;	920	req->type = REQ_OPEN;
464	req->data = newSVsv (pathname);	921	req->data = newSVsv (pathname);
465	req->dataptr = SvPV_nolen (req->data);	922	req->dataptr = SvPVbyte_nolen (req->data);
466	req->fd = flags;	923	req->fd = flags;
467	req->mode = mode;	924	req->mode = mode;
468	req->callback = SvREFCNT_inc (callback);
469		925
470	send_req (req);	926	REQ_SEND;
471	}	927	}
472		928
473	void	929	void
474	aio_close(fh,callback=&PL_sv_undef)	930	aio_close (fh,callback=&PL_sv_undef)
475	SV * fh	931	SV * fh
476	SV * callback	932	SV * callback
477	PROTOTYPE: $;$	933	PROTOTYPE: $;$
478	ALIAS:	934	ALIAS:
479	aio_close = REQ_CLOSE	935	aio_close = REQ_CLOSE
480	aio_fsync = REQ_FSYNC	936	aio_fsync = REQ_FSYNC
481	aio_fdatasync = REQ_FDATASYNC	937	aio_fdatasync = REQ_FDATASYNC
482	CODE:	938	PPCODE:
483	{	939	{
484	aio_req req;	940	dREQ;
485
486	Newz (0, req, 1, aio_cb);
487
488	if (!req)
489	croak ("out of memory during aio_req allocation");
490		941
491	req->type = ix;	942	req->type = ix;
492	req->fh = newSVsv (fh);	943	req->fh = newSVsv (fh);
493	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494	req->callback = SvREFCNT_inc (callback);
495		945
496	send_req (req);	946	REQ_SEND (req);
497	}	947	}
498		948
499	void	949	void
500	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501	SV * fh	951	SV * fh
502	UV offset	952	UV offset
503	IV length	953	UV length
504	SV * data	954	SV * data
505	IV dataoffset	955	UV dataoffset
506	SV * callback	956	SV * callback
507	ALIAS:	957	ALIAS:
508	aio_read = REQ_READ	958	aio_read = REQ_READ
509	aio_write = REQ_WRITE	959	aio_write = REQ_WRITE
510	PROTOTYPE: $$$$$;$	960	PROTOTYPE: $$$$$;$
511	CODE:	961	PPCODE:
512	{	962	{
513	aio_req req;	963	aio_req req;
514	STRLEN svlen;	964	STRLEN svlen;
515	char *svptr = SvPV (data, svlen);	965	char *svptr = SvPVbyte (data, svlen);
516		966
517	SvUPGRADE (data, SVt_PV);	967	SvUPGRADE (data, SVt_PV);
518	SvPOK_on (data);	968	SvPOK_on (data);
519		969
520	if (dataoffset < 0)	970	if (dataoffset < 0)
…		…
536	}	986	}
537		987
538	if (length < 0)	988	if (length < 0)
539	croak ("length must not be negative");	989	croak ("length must not be negative");
540		990
541	Newz (0, req, 1, aio_cb);	991	{
		992	dREQ;
542		993
543	if (!req)
544	croak ("out of memory during aio_req allocation");
545
546	req->type = ix;	994	req->type = ix;
547	req->fh = newSVsv (fh);	995	req->fh = newSVsv (fh);
548	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549	: IoOFP (sv_2io (fh)));	997	: IoOFP (sv_2io (fh)));
550	req->offset = offset;	998	req->offset = offset;
		999	req->length = length;
		1000	req->data = SvREFCNT_inc (data);
		1001	req->dataptr = (char *)svptr + dataoffset;
		1002
		1003	if (!SvREADONLY (data))
		1004	{
		1005	SvREADONLY_on (data);
		1006	req->data2ptr = (void *)data;
		1007	}
		1008
		1009	REQ_SEND;
		1010	}
		1011	}
		1012
		1013	void
		1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
		1015	SV * out_fh
		1016	SV * in_fh
		1017	UV in_offset
		1018	UV length
		1019	SV * callback
		1020	PROTOTYPE: $$$$;$
		1021	PPCODE:
		1022	{
		1023	dREQ;
		1024
		1025	req->type = REQ_SENDFILE;
		1026	req->fh = newSVsv (out_fh);
		1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		1028	req->fh2 = newSVsv (in_fh);
		1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		1030	req->offset = in_offset;
551	req->length = length;	1031	req->length = length;
552	req->data = SvREFCNT_inc (data);
553	req->dataptr = (char *)svptr + dataoffset;
554	req->callback = SvREFCNT_inc (callback);
555		1032
556	send_req (req);	1033	REQ_SEND;
557	}	1034	}
558		1035
559	void	1036	void
560	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
561	SV * fh	1038	SV * fh
562	UV offset	1039	UV offset
563	IV length	1040	IV length
564	SV * callback	1041	SV * callback
565	PROTOTYPE: $$$;$	1042	PROTOTYPE: $$$;$
566	CODE:	1043	PPCODE:
567	{	1044	{
568	aio_req req;	1045	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		1046
578	req->type = REQ_READAHEAD;	1047	req->type = REQ_READAHEAD;
579	req->fh = newSVsv (fh);	1048	req->fh = newSVsv (fh);
580	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581	req->offset = offset;	1050	req->offset = offset;
582	req->length = length;	1051	req->length = length;
583	req->callback = SvREFCNT_inc (callback);
584		1052
585	send_req (req);	1053	REQ_SEND;
586	}	1054	}
587		1055
588	void	1056	void
589	aio_stat(fh_or_path,callback=&PL_sv_undef)	1057	aio_stat (fh_or_path,callback=&PL_sv_undef)
590	SV * fh_or_path	1058	SV * fh_or_path
591	SV * callback	1059	SV * callback
592	ALIAS:	1060	ALIAS:
593	aio_stat = REQ_STAT	1061	aio_stat = REQ_STAT
594	aio_lstat = REQ_LSTAT	1062	aio_lstat = REQ_LSTAT
595	CODE:	1063	PPCODE:
596	{	1064	{
597	aio_req req;	1065	dREQ;
598
599	Newz (0, req, 1, aio_cb);
600
601	if (!req)
602	croak ("out of memory during aio_req allocation");
603		1066
604	New (0, req->statdata, 1, Stat_t);	1067	New (0, req->statdata, 1, Stat_t);
605
606	if (!req->statdata)	1068	if (!req->statdata)
		1069	{
		1070	req_free (req);
607	croak ("out of memory during aio_req->statdata allocation");	1071	croak ("out of memory during aio_req->statdata allocation");
		1072	}
608		1073
609	if (SvPOK (fh_or_path))	1074	if (SvPOK (fh_or_path))
610	{	1075	{
611	req->type = ix;	1076	req->type = ix;
612	req->data = newSVsv (fh_or_path);	1077	req->data = newSVsv (fh_or_path);
613	req->dataptr = SvPV_nolen (req->data);	1078	req->dataptr = SvPVbyte_nolen (req->data);
614	}	1079	}
615	else	1080	else
616	{	1081	{
617	req->type = REQ_FSTAT;	1082	req->type = REQ_FSTAT;
618	req->fh = newSVsv (fh_or_path);	1083	req->fh = newSVsv (fh_or_path);
619	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620	}	1085	}
621		1086
622	req->callback = SvREFCNT_inc (callback);	1087	REQ_SEND;
623
624	send_req (req);
625	}	1088	}
626		1089
627	void	1090	void
628	aio_unlink(pathname,callback=&PL_sv_undef)	1091	aio_unlink (pathname,callback=&PL_sv_undef)
629	SV * pathname	1092	SV * pathname
630	SV * callback	1093	SV * callback
		1094	ALIAS:
		1095	aio_unlink = REQ_UNLINK
		1096	aio_rmdir = REQ_RMDIR
		1097	aio_readdir = REQ_READDIR
631	CODE:	1098	PPCODE:
632	{	1099	{
633	aio_req req;	1100	dREQ;
634		1101
635	Newz (0, req, 1, aio_cb);	1102	req->type = ix;
		1103	req->data = newSVsv (pathname);
		1104	req->dataptr = SvPVbyte_nolen (req->data);
636		1105
637	if (!req)	1106	REQ_SEND;
638	croak ("out of memory during aio_req allocation");	1107	}
		1108
		1109	void
		1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)
		1111	SV * oldpath
		1112	SV * newpath
		1113	SV * callback
		1114	ALIAS:
		1115	aio_link = REQ_LINK
		1116	aio_symlink = REQ_SYMLINK
		1117	aio_rename = REQ_RENAME
		1118	PPCODE:
		1119	{
		1120	dREQ;
639		1121
640	req->type = REQ_UNLINK;	1122	req->type = ix;
		1123	req->fh = newSVsv (oldpath);
		1124	req->data2ptr = SvPVbyte_nolen (req->fh);
641	req->data = newSVsv (pathname);	1125	req->data = newSVsv (newpath);
642	req->dataptr = SvPV_nolen (req->data);	1126	req->dataptr = SvPVbyte_nolen (req->data);
643	req->callback = SvREFCNT_inc (callback);
644		1127
645	send_req (req);	1128	REQ_SEND;
646	}	1129	}
647		1130
648	void	1131	void
		1132	aio_sleep (delay,callback=&PL_sv_undef)
		1133	double delay
		1134	SV * callback
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->type = REQ_SLEEP;
		1140	req->fd = delay < 0. ? 0 : delay;
		1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1142
		1143	REQ_SEND;
		1144	}
		1145
		1146	void
		1147	aio_group (callback=&PL_sv_undef)
		1148	SV * callback
		1149	PROTOTYPE: ;$
		1150	PPCODE:
		1151	{
		1152	dREQ;
		1153	req->type = REQ_GROUP;
		1154	req->grp_next = req;
		1155	req->grp_prev = req;
		1156
		1157	req_send (req);
		1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1159	}
		1160
		1161	void
649	flush()	1162	flush ()
650	PROTOTYPE:	1163	PROTOTYPE:
651	CODE:	1164	CODE:
652	while (nreqs)	1165	while (nreqs)
653	{	1166	{
654	poll_wait ();	1167	poll_wait ();
…		…
694	CODE:	1207	CODE:
695	RETVAL = nreqs;	1208	RETVAL = nreqs;
696	OUTPUT:	1209	OUTPUT:
697	RETVAL	1210	RETVAL
698		1211
		1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1213
		1214	void
		1215	cancel (aio_req_ornot req)
		1216	PROTOTYPE:
		1217	CODE:
		1218	req_cancel (req);
		1219
		1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1221
		1222	void
		1223	add (aio_req grp, ...)
		1224	PROTOTYPE: $;@
		1225	PPCODE:
		1226	{
		1227	int i;
		1228
		1229	for (i = 1; i < items; ++i )
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1233
		1234	aio_req req = SvAIO_REQ (ST (i));
		1235
		1236	if (req)
		1237	{
		1238	req->grp_prev = grp;
		1239	req->grp_next = grp->grp_next;
		1240	grp->grp_next->grp_prev = req;
		1241	grp->grp_next = req;
		1242
		1243	req->grp = grp;
		1244	}
		1245	}
		1246	}
		1247

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing IO-AIO/AIO.xs (file contents): Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs. Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC