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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.52 by root, Sun Oct 22 22:14:54 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
41	# define NAME_MAX 4096	49	# define NAME_MAX 4096
42	#endif	50	#endif
43		51
44	#if __ia64	52	#if __ia64
45	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	56	#else
47	# define STACKSIZE 8192	57	# define STACKSIZE 16384
48	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf = malloc (AIO_BUFSIZE); \
		65	if (!aio_buf) \
		66	return -1;
		67
		68	#define fBUF free (aio_buf)
49		69
50	enum {	70	enum {
51	REQ_QUIT,	71	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	72	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	76	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	78	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	79	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	80	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	81	REQ_BUSY,
62	};	82	};
63		83
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	84	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	85	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		86
67	typedef struct aio_cb	87	typedef struct aio_cb
68	{	88	{
69	struct aio_cb *volatile next;	89	struct aio_cb *volatile next;
70
71	struct aio_cb grp, grp_prev, grp_next, grp_first;
72
73	SV self; / the perl counterpart of this request, if any */
74		90
75	SV data, callback;	91	SV data, callback;
76	SV fh, fh2;	92	SV fh, fh2;
77	void dataptr, data2ptr;	93	void dataptr, data2ptr;
78	Stat_t *statdata;	94	Stat_t *statdata;
79	off_t offset;	95	off_t offset;
80	size_t length;	96	size_t length;
81	ssize_t result;	97	ssize_t result;
82		98
		99	STRLEN dataoffset;
83	int type;	100	int type;
84	int fd, fd2;	101	int fd, fd2;
85	int errorno;	102	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	103	mode_t mode; /* open */
		104
88	unsigned char cancelled;	105	unsigned char flags;
		106	unsigned char pri;
		107
		108	SV self; / the perl counterpart of this request, if any */
		109	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	110	} aio_cb;
		111
		112	enum {
		113	FLAG_CANCELLED = 0x01,
		114	};
90		115
91	typedef aio_cb *aio_req;	116	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	117	typedef aio_cb *aio_req_ornot;
		118
		119	enum {
		120	PRI_MIN = -4,
		121	PRI_MAX = 4,
		122
		123	DEFAULT_PRI = 0,
		124	PRI_BIAS = -PRI_MIN,
		125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		126	};
		127
		128	static int next_pri = DEFAULT_PRI + PRI_BIAS;
93		129
94	static int started, wanted;	130	static int started, wanted;
95	static volatile int nreqs;	131	static volatile int nreqs;
96	static int max_outstanding = 1<<30;	132	static int max_outstanding = 1<<30;
97	static int respipe [2];	133	static int respipe [2];
98		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		144
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	145	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	146	* a somewhat faster data structure might be nice, but
		147	* with 8 priorities this actually needs <20 insns
		148	* per shift, the most expensive operation.
		149	*/
		150	typedef struct {
		151	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		152	int size;
		153	} reqq;
		154
		155	static reqq req_queue;
		156	static reqq res_queue;
		157
		158	int reqq_push (reqq *q, aio_req req)
		159	{
		160	int pri = req->pri;
		161	req->next = 0;
		162
		163	if (q->qe[pri])
		164	{
		165	q->qe[pri]->next = req;
		166	q->qe[pri] = req;
		167	}
		168	else
		169	q->qe[pri] = q->qs[pri] = req;
		170
		171	return q->size++;
		172	}
		173
		174	aio_req reqq_shift (reqq *q)
		175	{
		176	int pri;
		177
		178	if (!q->size)
		179	return 0;
		180
		181	--q->size;
		182
		183	for (pri = NUM_PRI; pri--; )
		184	{
		185	aio_req req = q->qs[pri];
		186
		187	if (req)
		188	{
		189	if (!(q->qs[pri] = req->next))
		190	q->qe[pri] = 0;
		191
		192	return req;
		193	}
		194	}
		195
		196	abort ();
		197	}
105		198
106	static void req_invoke (aio_req req);	199	static void req_invoke (aio_req req);
107	static void req_free (aio_req req);	200	static void req_free (aio_req req);
108		201
109	/* must be called at most once */	202	/* must be called at most once */
…		…
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	211	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
119	}	212	}
120		213
121	static aio_req SvAIO_REQ (SV *sv)	214	static aio_req SvAIO_REQ (SV *sv)
122	{	215	{
		216	MAGIC *mg;
		217
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	218	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
124	croak ("object of class " AIO_REQ_KLASS " expected");	219	croak ("object of class " AIO_REQ_KLASS " expected");
125		220
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		222
128	return mg ? (aio_req)mg->mg_ptr : 0;	223	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	224	}
130		225
131	static void aio_grp_feed (aio_req grp)	226	static void aio_grp_feed (aio_req grp)
132	{	227	{
133	while (grp->length < grp->fd2)	228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
134	{	229	{
135	int old_len = grp->length;	230	int old_len = grp->length;
136		231
137	if (grp->fh2 && SvOK (grp->fh2))	232	if (grp->fh2 && SvOK (grp->fh2))
138	{	233	{
…		…
141	ENTER;	236	ENTER;
142	SAVETMPS;	237	SAVETMPS;
143	PUSHMARK (SP);	238	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;	240	PUTBACK;
146	call_sv (grp->fh2, G_VOID \| G_EVAL);	241	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
147	SPAGAIN;	242	SPAGAIN;
148	FREETMPS;	243	FREETMPS;
149	LEAVE;	244	LEAVE;
150	}	245	}
151		246
…		…
174	}	269	}
175	}	270	}
176		271
177	static void poll_wait ()	272	static void poll_wait ()
178	{	273	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;	274	fd_set rfd;
		275
		276	while (nreqs)
		277	{
		278	int size;
		279	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		280	pthread_mutex_lock (&reslock);
		281	#endif
		282	size = res_queue.size;
		283	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		284	pthread_mutex_unlock (&reslock);
		285	#endif
		286
		287	if (size)
		288	return;
		289
182	FD_ZERO(&rfd);	290	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);	291	FD_SET(respipe [0], &rfd);
184		292
185	select (respipe [0] + 1, &rfd, 0, 0, 0);	293	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}	294	}
187	}	295	}
188		296
189	static void req_invoke (aio_req req)	297	static void req_invoke (aio_req req)
190	{	298	{
191	dSP;	299	dSP;
192	int errorno = errno;
193		300
194	if (req->cancelled \|\| !SvOK (req->callback))	301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
195	return;	302	{
196
197	errno = req->errorno;	303	errno = req->errorno;
198		304
199	ENTER;	305	ENTER;
200	SAVETMPS;	306	SAVETMPS;
201	PUSHMARK (SP);	307	PUSHMARK (SP);
202	EXTEND (SP, 1);	308	EXTEND (SP, 1);
203		309
204	switch (req->type)	310	switch (req->type)
205	{
206	case REQ_READDIR:
207	{	311	{
208	SV *rv = &PL_sv_undef;	312	case REQ_READDIR:
209
210	if (req->result >= 0)
211	{	313	{
212	char *buf = req->data2ptr;	314	SV *rv = &PL_sv_undef;
213	AV *av = newAV ();
214		315
215	while (req->result)	316	if (req->result >= 0)
216	{	317	{
		318	char *buf = req->data2ptr;
		319	AV *av = newAV ();
		320
		321	while (req->result)
		322	{
217	SV *sv = newSVpv (buf, 0);	323	SV *sv = newSVpv (buf, 0);
218		324
219	av_push (av, sv);	325	av_push (av, sv);
220	buf += SvCUR (sv) + 1;	326	buf += SvCUR (sv) + 1;
221	req->result--;	327	req->result--;
		328	}
		329
		330	rv = sv_2mortal (newRV_noinc ((SV *)av));
222	}	331	}
223		332
224	rv = sv_2mortal (newRV_noinc ((SV *)av));	333	PUSHs (rv);
225	}	334	}
		335	break;
226		336
227	PUSHs (rv);	337	case REQ_OPEN:
		338	{
		339	/* convert fd to fh */
		340	SV *fh;
		341
		342	PUSHs (sv_2mortal (newSViv (req->result)));
		343	PUTBACK;
		344	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		345	SPAGAIN;
		346
		347	fh = SvREFCNT_inc (POPs);
		348
		349	PUSHMARK (SP);
		350	XPUSHs (sv_2mortal (fh));
		351	}
		352	break;
		353
		354	case REQ_GROUP:
		355	req->fd = 2; /* mark group as finished */
		356
		357	if (req->data)
		358	{
		359	int i;
		360	AV av = (AV )req->data;
		361
		362	EXTEND (SP, AvFILL (av) + 1);
		363	for (i = 0; i <= AvFILL (av); ++i)
		364	PUSHs (*av_fetch (av, i, 0));
		365	}
		366	break;
		367
		368	case REQ_NOP:
		369	case REQ_BUSY:
		370	break;
		371
		372	default:
		373	PUSHs (sv_2mortal (newSViv (req->result)));
		374	break;
228	}	375	}
229	break;
230		376
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235		377
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;	378	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV av = (AV )req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID \| G_EVAL);	379	call_sv (req->callback, G_VOID \| G_EVAL);
273	SPAGAIN;	380	SPAGAIN;
274		381
275	FREETMPS;	382	FREETMPS;
276	LEAVE;	383	LEAVE;
277
278	errno = errorno;
279
280	if (SvTRUE (ERRSV))
281	{	384	}
282	req_free (req);
283	croak (0);
284	}
285	}
286		385
287	static void req_free (aio_req req)
288	{
289	if (req->grp)	386	if (req->grp)
290	{	387	{
291	aio_req grp = req->grp;	388	aio_req grp = req->grp;
292		389
293	/* unlink request */	390	/* unlink request */
…		…
298	grp->grp_first = req->grp_next;	395	grp->grp_first = req->grp_next;
299		396
300	aio_grp_dec (grp);	397	aio_grp_dec (grp);
301	}	398	}
302		399
		400	if (SvTRUE (ERRSV))
		401	{
		402	req_free (req);
		403	croak (0);
		404	}
		405	}
		406
		407	static void req_free (aio_req req)
		408	{
303	if (req->self)	409	if (req->self)
304	{	410	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	411	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	412	SvREFCNT_dec (req->self);
307	}	413	}
…		…
318	Safefree (req);	424	Safefree (req);
319	}	425	}
320		426
321	static void req_cancel (aio_req req)	427	static void req_cancel (aio_req req)
322	{	428	{
323	req->cancelled = 1;	429	req->flags \|= FLAG_CANCELLED;
324		430
325	if (req->type == REQ_GROUP)	431	if (req->type == REQ_GROUP)
326	{	432	{
327	aio_req sub;	433	aio_req sub;
328		434
…		…
339	aio_req req;	445	aio_req req;
340		446
341	for (;;)	447	for (;;)
342	{	448	{
343	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
344	req = ress;	450	req = reqq_shift (&res_queue);
345		451
346	if (req)	452	if (req)
347	{	453	{
348	ress = req->next;
349
350	if (!ress)	454	if (!res_queue.size)
351	{	455	{
352	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
353	char buf [32];	457	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
355	;	459	;
356
357	rese = 0;
358	}	460	}
359	}	461	}
360		462
361	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
362		464
…		…
425	start_thread ();	527	start_thread ();
426		528
427	++nreqs;	529	++nreqs;
428		530
429	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
430		532	reqq_push (&req_queue, req);
431	req->next = 0;
432
433	if (reqe)
434	{
435	reqe->next = req;
436	reqe = req;
437	}
438	else
439	reqe = reqs = req;
440
441	pthread_cond_signal (&reqwait);	533	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
443		535
444	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
445	for (;;)	537	for (;;)
…		…
454	}	546	}
455		547
456	static void end_thread (void)	548	static void end_thread (void)
457	{	549	{
458	aio_req req;	550	aio_req req;
		551
459	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
460	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
461		556
462	req_send (req);	557	req_send (req);
463	}	558	}
464		559
465	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
…		…
552	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
553	# define readahead aio_readahead	648	# define readahead aio_readahead
554		649
555	static ssize_t readahead (int fd, off_t offset, size_t count)	650	static ssize_t readahead (int fd, off_t offset, size_t count)
556	{	651	{
557	char readahead_buf[4096];	652	dBUF;
558		653
559	while (count > 0)	654	while (count > 0)
560	{	655	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
562		657
563	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
564	offset += len;	659	offset += len;
565	count -= len;	660	count -= len;
566	}	661	}
		662
		663	fBUF;
567		664
568	errno = 0;	665	errno = 0;
569	}	666	}
570	#endif	667	#endif
571		668
…		…
657	#endif	754	#endif
658	)	755	)
659	)	756	)
660	{	757	{
661	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];	759	dBUF;
		760
663	res = 0;	761	res = 0;
664		762
665	while (count)	763	while (count)
666	{	764	{
667	ssize_t cnt;	765	ssize_t cnt;
668		766
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
670		768
671	if (cnt <= 0)	769	if (cnt <= 0)
672	{	770	{
673	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
674	break;	772	break;
675	}	773	}
676		774
677	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
678		776
679	if (cnt <= 0)	777	if (cnt <= 0)
680	{	778	{
681	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
682	break;	780	break;
…		…
684		782
685	offset += cnt;	783	offset += cnt;
686	res += cnt;	784	res += cnt;
687	count -= cnt;	785	count -= cnt;
688	}	786	}
		787
		788	fBUF;
689	}	789	}
690		790
691	return res;	791	return res;
692	}	792	}
693		793
694	/* read a full directory */	794	/* read a full directory */
695	static int scandir_ (const char path, void *namesp)	795	static int scandir_ (const char path, void *namesp)
696	{	796	{
697	DIR *dirp = opendir (path);	797	DIR *dirp;
698	union	798	union
699	{	799	{
700	struct dirent d;	800	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;	802	} *u;
703	struct dirent *entp;	803	struct dirent *entp;
704	char name, names;	804	char name, names;
705	int memlen = 4096;	805	int memlen = 4096;
706	int memofs = 0;	806	int memofs = 0;
707	int res = 0;	807	int res = 0;
708	int errorno;	808	int errorno;
709		809
		810	dirp = opendir (path);
710	if (!dirp)	811	if (!dirp)
711	return -1;	812	return -1;
712		813
		814	u = malloc (sizeof (*u));
713	names = malloc (memlen);	815	names = malloc (memlen);
714		816
		817	if (u && names)
715	for (;;)	818	for (;;)
716	{	819	{
		820	errno = 0;
717	errno = 0, readdir_r (dirp, &u.d, &entp);	821	readdir_r (dirp, &u->d, &entp);
718		822
719	if (!entp)	823	if (!entp)
720	break;	824	break;
721		825
722	name = entp->d_name;	826	name = entp->d_name;
723		827
724	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	828	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
725	{	829	{
726	int len = strlen (name) + 1;	830	int len = strlen (name) + 1;
727		831
728	res++;	832	res++;
729		833
730	while (memofs + len > memlen)	834	while (memofs + len > memlen)
731	{	835	{
732	memlen *= 2;	836	memlen *= 2;
733	names = realloc (names, memlen);	837	names = realloc (names, memlen);
734	if (!names)	838	if (!names)
735	break;	839	break;
736	}	840	}
737		841
738	memcpy (names + memofs, name, len);	842	memcpy (names + memofs, name, len);
739	memofs += len;	843	memofs += len;
740	}	844	}
741	}	845	}
742		846
743	errorno = errno;	847	errorno = errno;
		848	free (u);
744	closedir (dirp);	849	closedir (dirp);
745		850
746	if (errorno)	851	if (errorno)
747	{	852	{
748	free (names);	853	free (names);
…		…
765	{	870	{
766	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
767		872
768	for (;;)	873	for (;;)
769	{	874	{
770	req = reqs;	875	req = reqq_shift (&req_queue);
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777		876
778	if (req)	877	if (req)
779	break;	878	break;
780		879
781	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
782	}	881	}
783		882
784	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
785		884
786	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */	886	type = req->type; /* remember type for QUIT check */
		887
		888	if (!(req->flags & FLAG_CANCELLED))
		889	switch (type)
790	{	890	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793		893
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
…		…
808		908
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812		912
813	case REQ_SLEEP:	913	case REQ_BUSY:
814	{	914	{
815	struct timeval tv;	915	struct timeval tv;
816		916
817	tv.tv_sec = req->fd;	917	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;	918	tv.tv_usec = req->fd2;
819		919
820	req->result = select (0, 0, 0, 0, &tv);	920	req->result = select (0, 0, 0, 0, &tv);
821	}	921	}
822		922
		923	case REQ_GROUP:
		924	case REQ_NOP:
823	case REQ_QUIT:	925	case REQ_QUIT:
824	break;	926	break;
825		927
826	default:	928	default:
827	req->result = ENOSYS;	929	req->result = ENOSYS;
…		…
830		932
831	req->errorno = errno;	933	req->errorno = errno;
832		934
833	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
834		936
835	req->next = 0;	937	if (!reqq_push (&res_queue, req))
836
837	if (rese)
838	{
839	rese->next = req;
840	rese = req;
841	}
842	else
843	{
844	rese = ress = req;
845
846	/* write a dummy byte to the pipe so fh becomes ready */	938	/* write a dummy byte to the pipe so fh becomes ready */
847	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
848	}
849		940
850	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
851	}	942	}
852	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
853		944
…		…
884	{	975	{
885	aio_req prv;	976	aio_req prv;
886		977
887	started = 0;	978	started = 0;
888		979
889	while (reqs)	980	while (prv = reqq_shift (&req_queue))
890	{
891	prv = reqs;
892	reqs = prv->next;
893	req_free (prv);	981	req_free (prv);
894	}
895		982
896	reqs = reqe = 0;	983	while (prv = reqq_shift (&res_queue))
897
898	while (ress)
899	{
900	prv = ress;
901	ress = prv->next;
902	req_free (prv);	984	req_free (prv);
903	}	985
904
905	ress = rese = 0;
906
907	close (respipe [0]);	986	close (respipe [0]);
908	close (respipe [1]);	987	close (respipe [1]);
909	create_pipe ();	988	create_pipe ();
910		989
911	atfork_parent ();	990	atfork_parent ();
912	}	991	}
913		992
914	#define dREQ \	993	#define dREQ \
915	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
916	\	997	\
917	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
918	croak ("callback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
919	\	1000	\
920	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
921	if (!req) \	1002	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
923	\	1004	\
924	req->callback = newSVsv (callback)	1005	req->callback = newSVsv (callback); \
		1006	req->pri = req_pri
925		1007
926	#define REQ_SEND \	1008	#define REQ_SEND \
927	req_send (req); \	1009	req_send (req); \
928	\	1010	\
929	if (GIMME_V != G_VOID) \	1011	if (GIMME_V != G_VOID) \
…		…
1183		1265
1184	REQ_SEND;	1266	REQ_SEND;
1185	}	1267	}
1186		1268
1187	void	1269	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	1270	aio_busy (delay,callback=&PL_sv_undef)
1189	double delay	1271	double delay
1190	SV * callback	1272	SV * callback
1191	PPCODE:	1273	PPCODE:
1192	{	1274	{
1193	dREQ;	1275	dREQ;
1194		1276
1195	req->type = REQ_SLEEP;	1277	req->type = REQ_BUSY;
1196	req->fd = delay < 0. ? 0 : delay;	1278	req->fd = delay < 0. ? 0 : delay;
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1198		1280
1199	REQ_SEND;	1281	REQ_SEND;
1200	}	1282	}
…		…
1204	SV * callback	1286	SV * callback
1205	PROTOTYPE: ;$	1287	PROTOTYPE: ;$
1206	PPCODE:	1288	PPCODE:
1207	{	1289	{
1208	dREQ;	1290	dREQ;
		1291
1209	req->type = REQ_GROUP;	1292	req->type = REQ_GROUP;
1210	req_send (req);	1293	req_send (req);
		1294
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1212	}	1296	}
		1297
		1298	void
		1299	aio_nop (callback=&PL_sv_undef)
		1300	SV * callback
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->type = REQ_NOP;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
		1311	aioreq_pri (int pri = DEFAULT_PRI)
		1312	CODE:
		1313	if (pri < PRI_MIN) pri = PRI_MIN;
		1314	if (pri > PRI_MAX) pri = PRI_MAX;
		1315	next_pri = pri + PRI_BIAS;
		1316
		1317	void
		1318	aioreq_nice (int nice = 0)
		1319	CODE:
		1320	nice = next_pri - nice;
		1321	if (nice < PRI_MIN) nice = PRI_MIN;
		1322	if (nice > PRI_MAX) nice = PRI_MAX;
		1323	next_pri = nice + PRI_BIAS;
1213		1324
1214	void	1325	void
1215	flush ()	1326	flush ()
1216	PROTOTYPE:	1327	PROTOTYPE:
1217	CODE:	1328	CODE:
…		…
1266		1377
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1379
1269	void	1380	void
1270	cancel (aio_req_ornot req)	1381	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1382	CODE:
1273	req_cancel (req);	1383	req_cancel (req);
1274		1384
		1385	void
		1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1387	CODE:
		1388	SvREFCNT_dec (req->callback);
		1389	req->callback = newSVsv (callback);
		1390
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1392
1277	void	1393	void
1278	add (aio_req grp, ...)	1394	add (aio_req grp, ...)
1279	PPCODE:	1395	PPCODE:
1280	{	1396	{
1281	int i;	1397	int i;
		1398	aio_req req;
1282		1399
1283	if (grp->fd == 2)	1400	if (grp->fd == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1402
1286	for (i = 1; i < items; ++i )	1403	for (i = 1; i < items; ++i )
1287	{	1404	{
1288	if (GIMME_V != G_VOID)	1405	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1407
1291	aio_req req = SvAIO_REQ (ST (i));	1408	req = SvAIO_REQ (ST (i));
1292		1409
1293	if (req)	1410	if (req)
1294	{	1411	{
1295	++grp->length;	1412	++grp->length;
1296	req->grp = grp;	1413	req->grp = grp;
…		…
1319	SvREFCNT_dec (grp->data);	1436	SvREFCNT_dec (grp->data);
1320	grp->data = (SV *)av;	1437	grp->data = (SV *)av;
1321	}	1438	}
1322		1439
1323	void	1440	void
1324	lock (aio_req grp)
1325	CODE:
1326	++grp->length;
1327
1328	void
1329	unlock (aio_req grp)
1330	CODE:
1331	aio_grp_dec (grp);
1332
1333	void
1334	feeder_limit (aio_req grp, int limit)	1441	limit (aio_req grp, int limit)
1335	CODE:	1442	CODE:
1336	grp->fd2 = limit;	1443	grp->fd2 = limit;
1337	aio_grp_feed (grp);	1444	aio_grp_feed (grp);
1338		1445
1339	void	1446	void
1340	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1447	feed (aio_req grp, SV *callback=&PL_sv_undef)
1341	CODE:	1448	CODE:
1342	{	1449	{
1343	SvREFCNT_dec (grp->fh2);	1450	SvREFCNT_dec (grp->fh2);
1344	grp->fh2 = newSVsv (callback);	1451	grp->fh2 = newSVsv (callback);
1345		1452

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.52 by root, Sun Oct 22 22:14:54 2006 UTC vs. Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.52 by root, Sun Oct 22 22:14:54 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC