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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.65 by root, Tue Oct 24 00:26:32 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,
58	REQ_GROUP,	77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
59	};	79	};
60		80
61	#define AIO_REQ_KLASS "IO::AIO::REQ"	81	#define AIO_REQ_KLASS "IO::AIO::REQ"
62	#define AIO_GRP_KLASS "IO::AIO::GRP"	82	#define AIO_GRP_KLASS "IO::AIO::GRP"
63		83
64	typedef struct aio_cb	84	typedef struct aio_cb
65	{	85	{
66	struct aio_cb grp, grp_prev, *grp_next;
67
68	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
69
70	SV self; / the perl counterpart of this request, if any */
71		87
72	SV data, callback;	88	SV data, callback;
73	SV fh, fh2;	89	SV fh, fh2;
74	void dataptr, data2ptr;	90	void dataptr, data2ptr;
75	Stat_t *statdata;	91	Stat_t *statdata;
76	off_t offset;	92	off_t offset;
77	size_t length;	93	size_t length;
78	ssize_t result;	94	ssize_t result;
79		95
		96	STRLEN dataoffset;
80	int type;	97	int type;
81	int fd, fd2;	98	int fd, fd2;
82	int errorno;	99	int errorno;
83	STRLEN dataoffset;
84	mode_t mode; /* open */	100	mode_t mode; /* open */
		101
85	unsigned char cancelled;	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;
86	} aio_cb;	107	} aio_cb;
		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
87		112
88	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
89	typedef aio_cb *aio_req_ornot;	114	typedef aio_cb *aio_req_ornot;
90	typedef aio_cb *aio_group;	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;
91		125
92	static int started, wanted;	126	static int started, wanted;
93	static volatile int nreqs;	127	static volatile int nreqs;
94	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
95	static int respipe [2];	129	static int respipe [2];
96		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
97	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
98	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
99	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
100		140
101	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
102	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
103		143
		144	static void req_invoke (aio_req req);
		145	static void req_free (aio_req req);
		146
104	/* must be called at most once */	147	/* must be called at most once */
105	static SV req_sv (aio_req req, const char klass)	148	static SV req_sv (aio_req req, const char klass)
106	{	149	{
		150	if (!req->self)
		151	{
107	req->self = (SV *)newHV ();	152	req->self = (SV *)newHV ();
108	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
109		155
110	return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));	156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
111	}	157	}
112		158
113	static aio_req SvAIO_REQ (SV sv, const char klass)	159	static aio_req SvAIO_REQ (SV *sv)
114	{	160	{
		161	MAGIC *mg;
		162
115	if (!sv_derived_from (sv, klass) \|\| !SvROK (sv))	163	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
116	croak ("object of class %s expected", klass);	164	croak ("object of class " AIO_REQ_KLASS " expected");
117		165
118	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119		167
120	return mg ? (aio_req)mg->mg_ptr : 0;	168	return mg ? (aio_req)mg->mg_ptr : 0;
121	}	169	}
122		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
123	static void req_free (aio_req req)	341	static void req_free (aio_req req)
124	{	342	{
		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
125	if (req->self)	357	if (req->self)
126	{	358	{
127	sv_unmagic (req->self, PERL_MAGIC_ext);	359	sv_unmagic (req->self, PERL_MAGIC_ext);
128	SvREFCNT_dec (req->self);	360	SvREFCNT_dec (req->self);
129	}	361	}
130		362
131	if (req->data)
132	SvREFCNT_dec (req->data);	363	SvREFCNT_dec (req->data);
133
134	if (req->fh)
135	SvREFCNT_dec (req->fh);	364	SvREFCNT_dec (req->fh);
136
137	if (req->fh2)
138	SvREFCNT_dec (req->fh2);	365	SvREFCNT_dec (req->fh2);
139
140	if (req->statdata)
141	Safefree (req->statdata);
142
143	if (req->callback)
144	SvREFCNT_dec (req->callback);	366	SvREFCNT_dec (req->callback);
		367	Safefree (req->statdata);
145		368
146	if (req->type == REQ_READDIR && req->result >= 0)	369	if (req->type == REQ_READDIR && req->result >= 0)
147	free (req->data2ptr);	370	free (req->data2ptr);
148		371
149	Safefree (req);	372	Safefree (req);
150	}	373	}
151		374
152	static void	375	static void req_cancel (aio_req req)
153	poll_wait ()
154	{	376	{
155	if (nreqs && !ress)	377	req->flags \|= FLAG_CANCELLED;
156	{
157	fd_set rfd;
158	FD_ZERO(&rfd);
159	FD_SET(respipe [0], &rfd);
160		378
161	select (respipe [0] + 1, &rfd, 0, 0, 0);	379	if (req->type == REQ_GROUP)
162	}	380	{
163	}	381	aio_req sub;
164		382
165	static int	383	for (sub = req->grp_first; sub; sub = sub->grp_next)
166	poll_cb ()	384	req_cancel (sub);
		385	}
		386	}
		387
		388	static int poll_cb ()
167	{	389	{
168	dSP;	390	dSP;
169	int count = 0;	391	int count = 0;
170	int do_croak = 0;	392	int do_croak = 0;
171	aio_req req;	393	aio_req req;
…		…
193	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
194		416
195	if (!req)	417	if (!req)
196	break;	418	break;
197		419
198	nreqs--;	420	--nreqs;
199		421
200	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
201	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
202	else	429	else
203	{	430	{
204	int errorno = errno;
205	errno = req->errorno;
206
207	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
208	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));
209		433
210	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
211	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
215	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
216	PL_laststatval = req->result;	440	PL_laststatval = req->result;
217	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
218	}	442	}
219		443
220	ENTER;	444	req_invoke (req);
221	PUSHMARK (SP);
222		445
223	if (req->type == REQ_READDIR)
224	{
225	SV *rv = &PL_sv_undef;
226
227	if (req->result >= 0)
228	{
229	char *buf = req->data2ptr;
230	AV *av = newAV ();
231
232	while (req->result)
233	{
234	SV *sv = newSVpv (buf, 0);
235
236	av_push (av, sv);
237	buf += SvCUR (sv) + 1;
238	req->result--;
239	}
240
241	rv = sv_2mortal (newRV_noinc ((SV *)av));
242	}
243
244	XPUSHs (rv);
245	}
246	else
247	{
248	XPUSHs (sv_2mortal (newSViv (req->result)));
249
250	if (req->type == REQ_OPEN)
251	{
252	/* convert fd to fh */
253	SV *fh;
254
255	PUTBACK;
256	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
257	SPAGAIN;
258
259	fh = SvREFCNT_inc (POPs);
260
261	PUSHMARK (SP);
262	XPUSHs (sv_2mortal (fh));
263	}
264	}
265
266	if (SvOK (req->callback) && !req->cancelled)
267	{
268	PUTBACK;
269	call_sv (req->callback, G_VOID \| G_EVAL);
270	SPAGAIN;
271
272	if (SvTRUE (ERRSV))
273	{
274	req_free (req);
275	croak (0);
276	}
277	}
278
279	LEAVE;
280
281	errno = errorno;
282	count++;	446	count++;
283	}	447	}
284		448
285	req_free (req);	449	req_free (req);
286	}	450	}
…		…
288	return count;	452	return count;
289	}	453	}
290		454
291	static void aio_proc(void arg);	455	static void aio_proc(void arg);
292		456
293	static void
294	start_thread (void)	457	static void start_thread (void)
295	{	458	{
296	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
297	pthread_t tid;	460	pthread_t tid;
298	pthread_attr_t attr;	461	pthread_attr_t attr;
299		462
…		…
308	started++;	471	started++;
309		472
310	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
311	}	474	}
312		475
313	static void
314	req_send (aio_req req)	476	static void req_send (aio_req req)
315	{	477	{
316	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
317	start_thread ();	479	start_thread ();
318		480
319	nreqs++;	481	++nreqs;
320		482
321	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
322		484
323	req->next = 0;	485	req->next = 0;
324		486
…		…
343		505
344	poll_wait ();	506	poll_wait ();
345	}	507	}
346	}	508	}
347		509
348	static void	510	static void end_thread (void)
349	end_thread (void)
350	{	511	{
351	aio_req req;	512	aio_req req;
352	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
353	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
354		515
…		…
405	* 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,
406	* but that's your problem, not mine.	567	* but that's your problem, not mine.
407	*/	568	*/
408	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
409		570
410	static ssize_t	571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
411	pread (int fd, void *buf, size_t count, off_t offset)
412	{	572	{
413	ssize_t res;	573	ssize_t res;
414	off_t ooffset;	574	off_t ooffset;
415		575
416	pthread_mutex_lock (&preadwritelock);	576	pthread_mutex_lock (&preadwritelock);
…		…
421	pthread_mutex_unlock (&preadwritelock);	581	pthread_mutex_unlock (&preadwritelock);
422		582
423	return res;	583	return res;
424	}	584	}
425		585
426	static ssize_t
427	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)
428	{	587	{
429	ssize_t res;	588	ssize_t res;
430	off_t ooffset;	589	off_t ooffset;
431		590
432	pthread_mutex_lock (&preadwritelock);	591	pthread_mutex_lock (&preadwritelock);
…		…
445	#endif	604	#endif
446		605
447	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
448	# define readahead aio_readahead	607	# define readahead aio_readahead
449		608
450	static ssize_t
451	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
452	{	610	{
453	char readahead_buf[4096];	611	dBUF;
454		612
455	while (count > 0)	613	while (count > 0)
456	{	614	{
457	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
458		616
459	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
460	offset += len;	618	offset += len;
461	count -= len;	619	count -= len;
462	}	620	}
463		621
		622	fBUF;
		623
464	errno = 0;	624	errno = 0;
465	}	625	}
466	#endif	626	#endif
467		627
468	#if !HAVE_READDIR_R	628	#if !HAVE_READDIR_R
469	# define readdir_r aio_readdir_r	629	# define readdir_r aio_readdir_r
470		630
471	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472		632
473	static int
474	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	633	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
475	{	634	{
476	struct dirent *e;	635	struct dirent *e;
477	int errorno;	636	int errorno;
478		637
479	pthread_mutex_lock (&readdirlock);	638	pthread_mutex_lock (&readdirlock);
…		…
495	return e ? 0 : -1;	654	return e ? 0 : -1;
496	}	655	}
497	#endif	656	#endif
498		657
499	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
500	static ssize_t
501	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)
502	{	660	{
503	ssize_t res;	661	ssize_t res;
504		662
505	if (!count)	663	if (!count)
506	return 0;	664	return 0;
…		…
555	#endif	713	#endif
556	)	714	)
557	)	715	)
558	{	716	{
559	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
560	char buf[4096];	718	dBUF;
		719
561	res = 0;	720	res = 0;
562		721
563	while (count)	722	while (count)
564	{	723	{
565	ssize_t cnt;	724	ssize_t cnt;
566		725
567	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
568		727
569	if (cnt <= 0)	728	if (cnt <= 0)
570	{	729	{
571	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
572	break;	731	break;
573	}	732	}
574		733
575	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
576		735
577	if (cnt <= 0)	736	if (cnt <= 0)
578	{	737	{
579	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
580	break;	739	break;
…		…
582		741
583	offset += cnt;	742	offset += cnt;
584	res += cnt;	743	res += cnt;
585	count -= cnt;	744	count -= cnt;
586	}	745	}
		746
		747	fBUF;
587	}	748	}
588		749
589	return res;	750	return res;
590	}	751	}
591		752
592	/* read a full directory */	753	/* read a full directory */
593	static int
594	scandir_ (const char path, void *namesp)	754	static int scandir_ (const char path, void *namesp)
595	{	755	{
596	DIR *dirp = opendir (path);	756	DIR *dirp;
597	union	757	union
598	{	758	{
599	struct dirent d;	759	struct dirent d;
600	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601	} u;	761	} *u;
602	struct dirent *entp;	762	struct dirent *entp;
603	char name, names;	763	char name, names;
604	int memlen = 4096;	764	int memlen = 4096;
605	int memofs = 0;	765	int memofs = 0;
606	int res = 0;	766	int res = 0;
607	int errorno;	767	int errorno;
608		768
		769	dirp = opendir (path);
609	if (!dirp)	770	if (!dirp)
610	return -1;	771	return -1;
611		772
		773	u = malloc (sizeof (*u));
612	names = malloc (memlen);	774	names = malloc (memlen);
613		775
		776	if (u && names)
614	for (;;)	777	for (;;)
615	{	778	{
		779	errno = 0;
616	errno = 0, readdir_r (dirp, &u.d, &entp);	780	readdir_r (dirp, &u->d, &entp);
617		781
618	if (!entp)	782	if (!entp)
619	break;	783	break;
620		784
621	name = entp->d_name;	785	name = entp->d_name;
622		786
623	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	787	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
624	{	788	{
625	int len = strlen (name) + 1;	789	int len = strlen (name) + 1;
626		790
627	res++;	791	res++;
628		792
629	while (memofs + len > memlen)	793	while (memofs + len > memlen)
630	{	794	{
631	memlen *= 2;	795	memlen *= 2;
632	names = realloc (names, memlen);	796	names = realloc (names, memlen);
633	if (!names)	797	if (!names)
634	break;	798	break;
635	}	799	}
636		800
637	memcpy (names + memofs, name, len);	801	memcpy (names + memofs, name, len);
638	memofs += len;	802	memofs += len;
639	}	803	}
640	}	804	}
641		805
642	errorno = errno;	806	errorno = errno;
		807	free (u);
643	closedir (dirp);	808	closedir (dirp);
644		809
645	if (errorno)	810	if (errorno)
646	{	811	{
647	free (names);	812	free (names);
…		…
653	return res;	818	return res;
654	}	819	}
655		820
656	/*****************************************************************************/	821	/*****************************************************************************/
657		822
658	static void *
659	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
660	{	824	{
661	aio_req req;	825	aio_req req;
662	int type;	826	int type;
663		827
664	do	828	do
…		…
682	}	846	}
683		847
684	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
685		849
686	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
687		852
688	if (!req->cancelled)	853	if (!(req->flags & FLAG_CANCELLED))
689	switch (req->type)	854	switch (type)
690	{	855	{
691	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;
692	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;
693		858
694	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;
…		…
708		873
709	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
710	case REQ_FSYNC: req->result = fsync (req->fd); break;	875	case REQ_FSYNC: req->result = fsync (req->fd); break;
711	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
712		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:
713	case REQ_QUIT:	890	case REQ_QUIT:
714	break;	891	break;
715		892
716	default:	893	default:
717	req->result = ENOSYS;	894	req->result = ENOSYS;
…		…
801	atfork_parent ();	978	atfork_parent ();
802	}	979	}
803		980
804	#define dREQ \	981	#define dREQ \
805	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
806	\	985	\
807	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
808	croak ("callback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
809	\	988	\
810	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
811	if (!req) \	990	if (!req) \
812	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
813	\	992	\
814	req->callback = newSVsv (callback)	993	req->callback = newSVsv (callback); \
		994	req->pri = req_pri
815		995
816	#define REQ_SEND \	996	#define REQ_SEND \
817	req_send (req); \	997	req_send (req); \
818	\	998	\
819	if (GIMME_V != G_VOID) \	999	if (GIMME_V != G_VOID) \
…		…
1073		1253
1074	REQ_SEND;	1254	REQ_SEND;
1075	}	1255	}
1076		1256
1077	void	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
1078	aio_group (callback=&PL_sv_undef)	1273	aio_group (callback=&PL_sv_undef)
1079	SV * callback	1274	SV * callback
1080	PROTOTYPE: ;&	1275	PROTOTYPE: ;$
1081	PPCODE:	1276	PPCODE:
1082	{	1277	{
1083	dREQ;	1278	dREQ;
		1279
1084	req->type = REQ_GROUP;	1280	req->type = REQ_GROUP;
		1281	req_send (req);
		1282
1085	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1086	}	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
1087		1308
1088	void	1309	void
1089	flush ()	1310	flush ()
1090	PROTOTYPE:	1311	PROTOTYPE:
1091	CODE:	1312	CODE:
…		…
1134	CODE:	1355	CODE:
1135	RETVAL = nreqs;	1356	RETVAL = nreqs;
1136	OUTPUT:	1357	OUTPUT:
1137	RETVAL	1358	RETVAL
1138		1359
		1360	PROTOTYPES: DISABLE
		1361
1139	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140		1363
1141	void	1364	void
1142	cancel (aio_req_ornot req)	1365	cancel (aio_req_ornot req)
1143	PROTOTYPE:	1366	PROTOTYPE:
1144	CODE:	1367	CODE:
1145	req->cancelled = 1;	1368	req_cancel (req);
1146		1369
		1370	void
		1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1372	CODE:
		1373	SvREFCNT_dec (req->callback);
		1374	req->callback = newSVsv (callback);
		1375
		1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1377
		1378	void
		1379	add (aio_req grp, ...)
		1380	PPCODE:
		1381	{
		1382	int i;
		1383	aio_req req;
		1384
		1385	if (grp->fd == 2)
		1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1387
		1388	for (i = 1; i < items; ++i )
		1389	{
		1390	if (GIMME_V != G_VOID)
		1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1392
		1393	req = SvAIO_REQ (ST (i));
		1394
		1395	if (req)
		1396	{
		1397	++grp->length;
		1398	req->grp = grp;
		1399
		1400	req->grp_prev = 0;
		1401	req->grp_next = grp->grp_first;
		1402
		1403	if (grp->grp_first)
		1404	grp->grp_first->grp_prev = req;
		1405
		1406	grp->grp_first = req;
		1407	}
		1408	}
		1409	}
		1410
		1411	void
		1412	result (aio_req grp, ...)
		1413	CODE:
		1414	{
		1415	int i;
		1416	AV *av = newAV ();
		1417
		1418	for (i = 1; i < items; ++i )
		1419	av_push (av, newSVsv (ST (i)));
		1420
		1421	SvREFCNT_dec (grp->data);
		1422	grp->data = (SV *)av;
		1423	}
		1424
		1425	void
		1426	feed_limit (aio_req grp, int limit)
		1427	CODE:
		1428	grp->fd2 = limit;
		1429	aio_grp_feed (grp);
		1430
		1431	void
		1432	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1433	CODE:
		1434	{
		1435	SvREFCNT_dec (grp->fh2);
		1436	grp->fh2 = newSVsv (callback);
		1437
		1438	if (grp->fd2 <= 0)
		1439	grp->fd2 = 2;
		1440
		1441	aio_grp_feed (grp);
		1442	}
		1443

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs. Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC