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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC

…		…
		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
12	#include <stddef.h>	17	#include <stddef.h>
13	#include <errno.h>	18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
14	#include <sys/types.h>	21	#include <sys/types.h>
15	#include <sys/stat.h>	22	#include <sys/stat.h>
16	#include <limits.h>	23	#include <limits.h>
17	#include <unistd.h>	24	#include <unistd.h>
18	#include <fcntl.h>	25	#include <fcntl.h>
…		…
39	# define NAME_MAX 4096	46	# define NAME_MAX 4096
40	#endif	47	#endif
41		48
42	#if __ia64	49	#if __ia64
43	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	53	#else
45	# define STACKSIZE 8192	54	# define STACKSIZE 16384
46	#endif	55	#endif
		56
		57	/* buffer size for various temporary buffers */
		58	#define AIO_BUFSIZE 65536
		59
		60	#define dBUF \
		61	char *aio_buf = malloc (AIO_BUFSIZE); \
		62	if (!aio_buf) \
		63	return -1;
		64
		65	#define fBUF free (aio_buf)
47		66
48	enum {	67	enum {
49	REQ_QUIT,	68	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	75	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
58	};	79	};
59		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
60	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
61	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
62		87
63	int type;	88	SV data, callback;
64		89	SV fh, fh2;
65	/* should receive a cleanup, with unions */	90	void dataptr, data2ptr;
66	int fd, fd2;	91	Stat_t *statdata;
67	off_t offset;	92	off_t offset;
68	size_t length;	93	size_t length;
69	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
70	mode_t mode; /* open */	100	mode_t mode; /* open */
71	int errorno;
72	SV data, callback;
73	SV fh, fh2;
74	void dataptr, data2ptr;
75	STRLEN dataoffset;
76		101
77	Stat_t *statdata;	102	unsigned char flags;
		103	unsigned char pri;
		104
		105	SV self; / the perl counterpart of this request, if any */
		106	struct aio_cb grp, grp_prev, grp_next, grp_first;
78	} aio_cb;	107	} aio_cb;
79		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
80	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		115
		116	enum {
		117	PRI_MIN = -4,
		118	PRI_MAX = 4,
		119
		120	DEFAULT_PRI = 0,
		121	PRI_BIAS = -PRI_MIN,
		122	};
		123
		124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
81		125
82	static int started, wanted;	126	static int started, wanted;
83	static volatile int nreqs;	127	static volatile int nreqs;
84	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
85	static int respipe [2];	129	static int respipe [2];
86		130
		131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		133	#else
		134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		135	#endif
		136
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		140
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
92	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
93		143
		144	static void req_invoke (aio_req req);
		145	static void req_free (aio_req req);
		146
		147	/* must be called at most once */
		148	static SV req_sv (aio_req req, const char klass)
		149	{
		150	if (!req->self)
		151	{
		152	req->self = (SV *)newHV ();
		153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
		155
		156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		157	}
		158
		159	static aio_req SvAIO_REQ (SV *sv)
		160	{
		161	MAGIC *mg;
		162
		163	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		164	croak ("object of class " AIO_REQ_KLASS " expected");
		165
		166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		167
		168	return mg ? (aio_req)mg->mg_ptr : 0;
		169	}
		170
		171	static void aio_grp_feed (aio_req grp)
		172	{
		173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		174	{
		175	int old_len = grp->length;
		176
		177	if (grp->fh2 && SvOK (grp->fh2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->fh2, G_VOID \| G_EVAL);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191
		192	/* stop if no progress has been made */
		193	if (old_len == grp->length)
		194	{
		195	SvREFCNT_dec (grp->fh2);
		196	grp->fh2 = 0;
		197	break;
		198	}
		199	}
		200	}
		201
		202	static void aio_grp_dec (aio_req grp)
		203	{
		204	--grp->length;
		205
		206	/* call feeder, if applicable */
		207	aio_grp_feed (grp);
		208
		209	/* finish, if done */
		210	if (!grp->length && grp->fd)
		211	{
		212	req_invoke (grp);
		213	req_free (grp);
		214	}
		215	}
		216
		217	static void poll_wait ()
		218	{
		219	fd_set rfd;
		220
		221	while (nreqs)
		222	{
		223	aio_req req;
		224	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		225	pthread_mutex_lock (&reslock);
		226	#endif
		227	req = ress;
		228	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		229	pthread_mutex_unlock (&reslock);
		230	#endif
		231
		232	if (req)
		233	return;
		234
		235	FD_ZERO(&rfd);
		236	FD_SET(respipe [0], &rfd);
		237
		238	select (respipe [0] + 1, &rfd, 0, 0, 0);
		239	}
		240	}
		241
		242	static void req_invoke (aio_req req)
		243	{
		244	dSP;
		245	int errorno = errno;
		246
		247	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		248	return;
		249
		250	errno = req->errorno;
		251
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
		258	{
		259	case REQ_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
		262
		263	if (req->result >= 0)
		264	{
		265	char *buf = req->data2ptr;
		266	AV *av = newAV ();
		267
		268	while (req->result)
		269	{
		270	SV *sv = newSVpv (buf, 0);
		271
		272	av_push (av, sv);
		273	buf += SvCUR (sv) + 1;
		274	req->result--;
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281	}
		282	break;
		283
		284	case REQ_OPEN:
		285	{
		286	/* convert fd to fh */
		287	SV *fh;
		288
		289	PUSHs (sv_2mortal (newSViv (req->result)));
		290	PUTBACK;
		291	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		292	SPAGAIN;
		293
		294	fh = SvREFCNT_inc (POPs);
		295
		296	PUSHMARK (SP);
		297	XPUSHs (sv_2mortal (fh));
		298	}
		299	break;
		300
		301	case REQ_GROUP:
		302	req->fd = 2; /* mark group as finished */
		303
		304	if (req->data)
		305	{
		306	int i;
		307	AV av = (AV )req->data;
		308
		309	EXTEND (SP, AvFILL (av) + 1);
		310	for (i = 0; i <= AvFILL (av); ++i)
		311	PUSHs (*av_fetch (av, i, 0));
		312	}
		313	break;
		314
		315	case REQ_NOP:
		316	case REQ_SLEEP:
		317	break;
		318
		319	default:
		320	PUSHs (sv_2mortal (newSViv (req->result)));
		321	break;
		322	}
		323
		324
		325	PUTBACK;
		326	call_sv (req->callback, G_VOID \| G_EVAL);
		327	SPAGAIN;
		328
		329	FREETMPS;
		330	LEAVE;
		331
		332	errno = errorno;
		333
		334	if (SvTRUE (ERRSV))
		335	{
		336	req_free (req);
		337	croak (0);
		338	}
		339	}
		340
94	static void free_req (aio_req req)	341	static void req_free (aio_req req)
95	{	342	{
96	if (req->data)	343	if (req->grp)
		344	{
		345	aio_req grp = req->grp;
		346
		347	/* unlink request */
		348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		350
		351	if (grp->grp_first == req)
		352	grp->grp_first = req->grp_next;
		353
		354	aio_grp_dec (grp);
		355	}
		356
		357	if (req->self)
		358	{
		359	sv_unmagic (req->self, PERL_MAGIC_ext);
		360	SvREFCNT_dec (req->self);
		361	}
		362
97	SvREFCNT_dec (req->data);	363	SvREFCNT_dec (req->data);
98
99	if (req->fh)
100	SvREFCNT_dec (req->fh);	364	SvREFCNT_dec (req->fh);
101
102	if (req->fh2)
103	SvREFCNT_dec (req->fh2);	365	SvREFCNT_dec (req->fh2);
104
105	if (req->statdata)
106	Safefree (req->statdata);
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);	366	SvREFCNT_dec (req->callback);
		367	Safefree (req->statdata);
110		368
111	if (req->type == REQ_READDIR && req->result >= 0)	369	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);	370	free (req->data2ptr);
113		371
114	Safefree (req);	372	Safefree (req);
115	}	373	}
116		374
117	static void	375	static void req_cancel (aio_req req)
118	poll_wait ()
119	{	376	{
120	if (nreqs && !ress)	377	req->flags \|= FLAG_CANCELLED;
121	{
122	fd_set rfd;
123	FD_ZERO(&rfd);
124	FD_SET(respipe [0], &rfd);
125		378
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	379	if (req->type == REQ_GROUP)
127	}	380	{
128	}	381	aio_req sub;
129		382
130	static int	383	for (sub = req->grp_first; sub; sub = sub->grp_next)
131	poll_cb ()	384	req_cancel (sub);
		385	}
		386	}
		387
		388	static int poll_cb ()
132	{	389	{
133	dSP;	390	dSP;
134	int count = 0;	391	int count = 0;
135	int do_croak = 0;	392	int do_croak = 0;
136	aio_req req;	393	aio_req req;
…		…
158	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
159		416
160	if (!req)	417	if (!req)
161	break;	418	break;
162		419
163	nreqs--;	420	--nreqs;
164		421
165	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
166	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
167	else	429	else
168	{	430	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174		433
175	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;	440	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
183	}	442	}
184		443
185	ENTER;	444	req_invoke (req);
186	PUSHMARK (SP);
187		445
188	if (req->type == REQ_READDIR)
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	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID \| G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);
241	}
242	}
243
244	LEAVE;
245
246	errno = errorno;
247	count++;	446	count++;
248	}	447	}
249		448
250	free_req (req);	449	req_free (req);
251	}	450	}
252		451
253	return count;	452	return count;
254	}	453	}
255		454
256	static void aio_proc(void arg);	455	static void aio_proc(void arg);
257		456
258	static void
259	start_thread (void)	457	static void start_thread (void)
260	{	458	{
261	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
262	pthread_t tid;	460	pthread_t tid;
263	pthread_attr_t attr;	461	pthread_attr_t attr;
264		462
…		…
273	started++;	471	started++;
274		472
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
276	}	474	}
277		475
278	static void	476	static void req_send (aio_req req)
279	send_req (aio_req req)
280	{	477	{
281	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
282	start_thread ();	479	start_thread ();
283		480
284	nreqs++;	481	++nreqs;
285		482
286	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
287		484
288	req->next = 0;	485	req->next = 0;
289		486
…		…
308		505
309	poll_wait ();	506	poll_wait ();
310	}	507	}
311	}	508	}
312		509
313	static void	510	static void end_thread (void)
314	end_thread (void)
315	{	511	{
316	aio_req req;	512	aio_req req;
317	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
318	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
319		515
320	send_req (req);	516	req_send (req);
321	}	517	}
322		518
323	static void min_parallel (int nthreads)	519	static void min_parallel (int nthreads)
324	{	520	{
325	if (wanted < nthreads)	521	if (wanted < nthreads)
…		…
370	* normal read/write by using a mutex. slows down execution a lot,	566	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	567	* but that's your problem, not mine.
372	*/	568	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		570
375	static ssize_t	571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	572	{
378	ssize_t res;	573	ssize_t res;
379	off_t ooffset;	574	off_t ooffset;
380		575
381	pthread_mutex_lock (&preadwritelock);	576	pthread_mutex_lock (&preadwritelock);
…		…
386	pthread_mutex_unlock (&preadwritelock);	581	pthread_mutex_unlock (&preadwritelock);
387		582
388	return res;	583	return res;
389	}	584	}
390		585
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	587	{
394	ssize_t res;	588	ssize_t res;
395	off_t ooffset;	589	off_t ooffset;
396		590
397	pthread_mutex_lock (&preadwritelock);	591	pthread_mutex_lock (&preadwritelock);
…		…
410	#endif	604	#endif
411		605
412	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	607	# define readahead aio_readahead
414		608
415	static ssize_t
416	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
417	{	610	{
418	char readahead_buf[4096];	611	dBUF;
419		612
420	while (count > 0)	613	while (count > 0)
421	{	614	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		616
424	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
425	offset += len;	618	offset += len;
426	count -= len;	619	count -= len;
427	}	620	}
428		621
		622	fBUF;
		623
429	errno = 0;	624	errno = 0;
430	}	625	}
431	#endif	626	#endif
432		627
433	#if !HAVE_READDIR_R	628	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r	629	# define readdir_r aio_readdir_r
435		630
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437		632
438	static int
439	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	633	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
440	{	634	{
441	struct dirent *e;	635	struct dirent *e;
442	int errorno;	636	int errorno;
443		637
444	pthread_mutex_lock (&readdirlock);	638	pthread_mutex_lock (&readdirlock);
…		…
460	return e ? 0 : -1;	654	return e ? 0 : -1;
461	}	655	}
462	#endif	656	#endif
463		657
464	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467	{	660	{
468	ssize_t res;	661	ssize_t res;
469		662
470	if (!count)	663	if (!count)
471	return 0;	664	return 0;
…		…
520	#endif	713	#endif
521	)	714	)
522	)	715	)
523	{	716	{
524	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];	718	dBUF;
		719
526	res = 0;	720	res = 0;
527		721
528	while (count)	722	while (count)
529	{	723	{
530	ssize_t cnt;	724	ssize_t cnt;
531		725
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
533		727
534	if (cnt <= 0)	728	if (cnt <= 0)
535	{	729	{
536	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
537	break;	731	break;
538	}	732	}
539		733
540	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
541		735
542	if (cnt <= 0)	736	if (cnt <= 0)
543	{	737	{
544	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
545	break;	739	break;
…		…
547		741
548	offset += cnt;	742	offset += cnt;
549	res += cnt;	743	res += cnt;
550	count -= cnt;	744	count -= cnt;
551	}	745	}
		746
		747	fBUF;
552	}	748	}
553		749
554	return res;	750	return res;
555	}	751	}
556		752
557	/* read a full directory */	753	/* read a full directory */
558	static int
559	scandir_ (const char path, void *namesp)	754	static int scandir_ (const char path, void *namesp)
560	{	755	{
561	DIR *dirp = opendir (path);	756	DIR *dirp;
562	union	757	union
563	{	758	{
564	struct dirent d;	759	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;	761	} *u;
567	struct dirent *entp;	762	struct dirent *entp;
568	char name, names;	763	char name, names;
569	int memlen = 4096;	764	int memlen = 4096;
570	int memofs = 0;	765	int memofs = 0;
571	int res = 0;	766	int res = 0;
572	int errorno;	767	int errorno;
573		768
		769	dirp = opendir (path);
574	if (!dirp)	770	if (!dirp)
575	return -1;	771	return -1;
576		772
		773	u = malloc (sizeof (*u));
577	names = malloc (memlen);	774	names = malloc (memlen);
578		775
		776	if (u && names)
579	for (;;)	777	for (;;)
580	{	778	{
		779	errno = 0;
581	errno = 0, readdir_r (dirp, &u.d, &entp);	780	readdir_r (dirp, &u->d, &entp);
582		781
583	if (!entp)	782	if (!entp)
584	break;	783	break;
585		784
586	name = entp->d_name;	785	name = entp->d_name;
587		786
588	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	787	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
589	{	788	{
590	int len = strlen (name) + 1;	789	int len = strlen (name) + 1;
591		790
592	res++;	791	res++;
593		792
594	while (memofs + len > memlen)	793	while (memofs + len > memlen)
595	{	794	{
596	memlen *= 2;	795	memlen *= 2;
597	names = realloc (names, memlen);	796	names = realloc (names, memlen);
598	if (!names)	797	if (!names)
599	break;	798	break;
600	}	799	}
601		800
602	memcpy (names + memofs, name, len);	801	memcpy (names + memofs, name, len);
603	memofs += len;	802	memofs += len;
604	}	803	}
605	}	804	}
606		805
607	errorno = errno;	806	errorno = errno;
		807	free (u);
608	closedir (dirp);	808	closedir (dirp);
609		809
610	if (errorno)	810	if (errorno)
611	{	811	{
612	free (names);	812	free (names);
…		…
618	return res;	818	return res;
619	}	819	}
620		820
621	/*****************************************************************************/	821	/*****************************************************************************/
622		822
623	static void *
624	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
625	{	824	{
626	aio_req req;	825	aio_req req;
627	int type;	826	int type;
628		827
629	do	828	do
…		…
647	}	846	}
648		847
649	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
650		849
651	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
652		852
653	type = req->type;	853	if (!(req->flags & FLAG_CANCELLED))
654
655	switch (type)	854	switch (type)
656	{	855	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	856	case REQ_READ: req->result = pread (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;	857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659		858
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
662		861
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666		865
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;	867	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674		873
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;	875	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678		877
		878	case REQ_SLEEP:
		879	{
		880	struct timeval tv;
		881
		882	tv.tv_sec = req->fd;
		883	tv.tv_usec = req->fd2;
		884
		885	req->result = select (0, 0, 0, 0, &tv);
		886	}
		887
		888	case REQ_GROUP:
		889	case REQ_NOP:
679	case REQ_QUIT:	890	case REQ_QUIT:
680	break;	891	break;
681		892
682	default:	893	default:
683	req->result = ENOSYS;	894	req->result = ENOSYS;
684	break;	895	break;
685	}	896	}
686		897
687	req->errorno = errno;	898	req->errorno = errno;
688		899
689	pthread_mutex_lock (&reslock);	900	pthread_mutex_lock (&reslock);
690		901
…		…
744		955
745	while (reqs)	956	while (reqs)
746	{	957	{
747	prv = reqs;	958	prv = reqs;
748	reqs = prv->next;	959	reqs = prv->next;
749	free_req (prv);	960	req_free (prv);
750	}	961	}
751		962
752	reqs = reqe = 0;	963	reqs = reqe = 0;
753		964
754	while (ress)	965	while (ress)
755	{	966	{
756	prv = ress;	967	prv = ress;
757	ress = prv->next;	968	ress = prv->next;
758	free_req (prv);	969	req_free (prv);
759	}	970	}
760		971
761	ress = rese = 0;	972	ress = rese = 0;
762		973
763	close (respipe [0]);	974	close (respipe [0]);
…		…
767	atfork_parent ();	978	atfork_parent ();
768	}	979	}
769		980
770	#define dREQ \	981	#define dREQ \
771	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
772	\	985	\
773	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
775	\	988	\
776	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
777	if (!req) \	990	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
779	\	992	\
780	req->callback = newSVsv (callback);	993	req->callback = newSVsv (callback); \
		994	req->pri = req_pri
		995
		996	#define REQ_SEND \
		997	req_send (req); \
		998	\
		999	if (GIMME_V != G_VOID) \
		1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		1001
782	MODULE = IO::AIO PACKAGE = IO::AIO	1002	MODULE = IO::AIO PACKAGE = IO::AIO
783		1003
784	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
785		1005
…		…
817	SV * pathname	1037	SV * pathname
818	int flags	1038	int flags
819	int mode	1039	int mode
820	SV * callback	1040	SV * callback
821	PROTOTYPE: $$$;$	1041	PROTOTYPE: $$$;$
822	CODE:	1042	PPCODE:
823	{	1043	{
824	dREQ;	1044	dREQ;
825		1045
826	req->type = REQ_OPEN;	1046	req->type = REQ_OPEN;
827	req->data = newSVsv (pathname);	1047	req->data = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	1048	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1049	req->fd = flags;
830	req->mode = mode;	1050	req->mode = mode;
831		1051
832	send_req (req);	1052	REQ_SEND;
833	}	1053	}
834		1054
835	void	1055	void
836	aio_close (fh,callback=&PL_sv_undef)	1056	aio_close (fh,callback=&PL_sv_undef)
837	SV * fh	1057	SV * fh
…		…
839	PROTOTYPE: $;$	1059	PROTOTYPE: $;$
840	ALIAS:	1060	ALIAS:
841	aio_close = REQ_CLOSE	1061	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1062	aio_fsync = REQ_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1063	aio_fdatasync = REQ_FDATASYNC
844	CODE:	1064	PPCODE:
845	{	1065	{
846	dREQ;	1066	dREQ;
847		1067
848	req->type = ix;	1068	req->type = ix;
849	req->fh = newSVsv (fh);	1069	req->fh = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		1071
852	send_req (req);	1072	REQ_SEND (req);
853	}	1073	}
854		1074
855	void	1075	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
857	SV * fh	1077	SV * fh
…		…
862	SV * callback	1082	SV * callback
863	ALIAS:	1083	ALIAS:
864	aio_read = REQ_READ	1084	aio_read = REQ_READ
865	aio_write = REQ_WRITE	1085	aio_write = REQ_WRITE
866	PROTOTYPE: $$$$$;$	1086	PROTOTYPE: $$$$$;$
867	CODE:	1087	PPCODE:
868	{	1088	{
869	aio_req req;	1089	aio_req req;
870	STRLEN svlen;	1090	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	1091	char *svptr = SvPVbyte (data, svlen);
872		1092
…		…
910	{	1130	{
911	SvREADONLY_on (data);	1131	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1132	req->data2ptr = (void *)data;
913	}	1133	}
914		1134
915	send_req (req);	1135	REQ_SEND;
916	}	1136	}
917	}	1137	}
918		1138
919	void	1139	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
922	SV * in_fh	1142	SV * in_fh
923	UV in_offset	1143	UV in_offset
924	UV length	1144	UV length
925	SV * callback	1145	SV * callback
926	PROTOTYPE: $$$$;$	1146	PROTOTYPE: $$$$;$
927	CODE:	1147	PPCODE:
928	{	1148	{
929	dREQ;	1149	dREQ;
930		1150
931	req->type = REQ_SENDFILE;	1151	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);	1152	req->fh = newSVsv (out_fh);
…		…
934	req->fh2 = newSVsv (in_fh);	1154	req->fh2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	1156	req->offset = in_offset;
937	req->length = length;	1157	req->length = length;
938		1158
939	send_req (req);	1159	REQ_SEND;
940	}	1160	}
941		1161
942	void	1162	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944	SV * fh	1164	SV * fh
945	UV offset	1165	UV offset
946	IV length	1166	IV length
947	SV * callback	1167	SV * callback
948	PROTOTYPE: $$$;$	1168	PROTOTYPE: $$$;$
949	CODE:	1169	PPCODE:
950	{	1170	{
951	dREQ;	1171	dREQ;
952		1172
953	req->type = REQ_READAHEAD;	1173	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);	1174	req->fh = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	1176	req->offset = offset;
957	req->length = length;	1177	req->length = length;
958		1178
959	send_req (req);	1179	REQ_SEND;
960	}	1180	}
961		1181
962	void	1182	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (fh_or_path,callback=&PL_sv_undef)
964	SV * fh_or_path	1184	SV * fh_or_path
965	SV * callback	1185	SV * callback
966	ALIAS:	1186	ALIAS:
967	aio_stat = REQ_STAT	1187	aio_stat = REQ_STAT
968	aio_lstat = REQ_LSTAT	1188	aio_lstat = REQ_LSTAT
969	CODE:	1189	PPCODE:
970	{	1190	{
971	dREQ;	1191	dREQ;
972		1192
973	New (0, req->statdata, 1, Stat_t);	1193	New (0, req->statdata, 1, Stat_t);
974	if (!req->statdata)	1194	if (!req->statdata)
975	{	1195	{
976	free_req (req);	1196	req_free (req);
977	croak ("out of memory during aio_req->statdata allocation");	1197	croak ("out of memory during aio_req->statdata allocation");
978	}	1198	}
979		1199
980	if (SvPOK (fh_or_path))	1200	if (SvPOK (fh_or_path))
981	{	1201	{
…		…
988	req->type = REQ_FSTAT;	1208	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);	1209	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}	1211	}
992		1212
993	send_req (req);	1213	REQ_SEND;
994	}	1214	}
995		1215
996	void	1216	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1217	aio_unlink (pathname,callback=&PL_sv_undef)
998	SV * pathname	1218	SV * pathname
999	SV * callback	1219	SV * callback
1000	ALIAS:	1220	ALIAS:
1001	aio_unlink = REQ_UNLINK	1221	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR	1222	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1223	aio_readdir = REQ_READDIR
1004	CODE:	1224	PPCODE:
1005	{	1225	{
1006	dREQ;	1226	dREQ;
1007		1227
1008	req->type = ix;	1228	req->type = ix;
1009	req->data = newSVsv (pathname);	1229	req->data = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
1011		1231
1012	send_req (req);	1232	REQ_SEND;
1013	}	1233	}
1014		1234
1015	void	1235	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1017	SV * oldpath	1237	SV * oldpath
…		…
1019	SV * callback	1239	SV * callback
1020	ALIAS:	1240	ALIAS:
1021	aio_link = REQ_LINK	1241	aio_link = REQ_LINK
1022	aio_symlink = REQ_SYMLINK	1242	aio_symlink = REQ_SYMLINK
1023	aio_rename = REQ_RENAME	1243	aio_rename = REQ_RENAME
1024	CODE:	1244	PPCODE:
1025	{	1245	{
1026	dREQ;	1246	dREQ;
1027		1247
1028	req->type = ix;	1248	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1249	req->fh = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1250	req->data2ptr = SvPVbyte_nolen (req->fh);
1031	req->data = newSVsv (newpath);	1251	req->data = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	1252	req->dataptr = SvPVbyte_nolen (req->data);
1033		1253
1034	send_req (req);	1254	REQ_SEND;
1035	}	1255	}
		1256
		1257	void
		1258	aio_sleep (delay,callback=&PL_sv_undef)
		1259	double delay
		1260	SV * callback
		1261	PPCODE:
		1262	{
		1263	dREQ;
		1264
		1265	req->type = REQ_SLEEP;
		1266	req->fd = delay < 0. ? 0 : delay;
		1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_group (callback=&PL_sv_undef)
		1274	SV * callback
		1275	PROTOTYPE: ;$
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = REQ_GROUP;
		1281	req_send (req);
		1282
		1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1284	}
		1285
		1286	void
		1287	aio_nop (callback=&PL_sv_undef)
		1288	SV * callback
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = REQ_NOP;
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	#if 0
		1299
		1300	void
		1301	aio_pri (int pri = DEFAULT_PRI)
		1302	CODE:
		1303	if (pri < PRI_MIN) pri = PRI_MIN;
		1304	if (pri > PRI_MAX) pri = PRI_MAX;
		1305	next_pri = pri + PRI_BIAS;
		1306
		1307	#endif
1036		1308
1037	void	1309	void
1038	flush ()	1310	flush ()
1039	PROTOTYPE:	1311	PROTOTYPE:
1040	CODE:	1312	CODE:
…		…
1083	CODE:	1355	CODE:
1084	RETVAL = nreqs;	1356	RETVAL = nreqs;
1085	OUTPUT:	1357	OUTPUT:
1086	RETVAL	1358	RETVAL
1087		1359
		1360	PROTOTYPES: DISABLE
		1361
		1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1363
		1364	void
		1365	cancel (aio_req_ornot req)
		1366	CODE:
		1367	req_cancel (req);
		1368
		1369	void
		1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1371	CODE:
		1372	SvREFCNT_dec (req->callback);
		1373	req->callback = newSVsv (callback);
		1374
		1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1376
		1377	void
		1378	add (aio_req grp, ...)
		1379	PPCODE:
		1380	{
		1381	int i;
		1382	aio_req req;
		1383
		1384	if (grp->fd == 2)
		1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1386
		1387	for (i = 1; i < items; ++i )
		1388	{
		1389	if (GIMME_V != G_VOID)
		1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1391
		1392	req = SvAIO_REQ (ST (i));
		1393
		1394	if (req)
		1395	{
		1396	++grp->length;
		1397	req->grp = grp;
		1398
		1399	req->grp_prev = 0;
		1400	req->grp_next = grp->grp_first;
		1401
		1402	if (grp->grp_first)
		1403	grp->grp_first->grp_prev = req;
		1404
		1405	grp->grp_first = req;
		1406	}
		1407	}
		1408	}
		1409
		1410	void
		1411	result (aio_req grp, ...)
		1412	CODE:
		1413	{
		1414	int i;
		1415	AV *av = newAV ();
		1416
		1417	for (i = 1; i < items; ++i )
		1418	av_push (av, newSVsv (ST (i)));
		1419
		1420	SvREFCNT_dec (grp->data);
		1421	grp->data = (SV *)av;
		1422	}
		1423
		1424	void
		1425	feed_limit (aio_req grp, int limit)
		1426	CODE:
		1427	grp->fd2 = limit;
		1428	aio_grp_feed (grp);
		1429
		1430	void
		1431	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1432	CODE:
		1433	{
		1434	SvREFCNT_dec (grp->fh2);
		1435	grp->fh2 = newSVsv (callback);
		1436
		1437	if (grp->fd2 <= 0)
		1438	grp->fd2 = 2;
		1439
		1440	aio_grp_feed (grp);
		1441	}
		1442

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs. Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC