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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.69 by root, Tue Oct 24 11:57:30 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"
41	# define NAME_MAX 4096	46	# define NAME_MAX 4096
42	#endif	47	#endif
43		48
44	#if __ia64	49	#if __ia64
45	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	53	#else
47	# define STACKSIZE 8192	54	# define STACKSIZE 16384
48	#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)
49		66
50	enum {	67	enum {
51	REQ_QUIT,	68	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	75	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	76	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	77	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	78	REQ_BUSY,
62	};	79	};
63		80
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	81	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	82	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		83
67	typedef struct aio_cb	84	typedef struct aio_cb
68	{	85	{
69	struct aio_cb grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
72
73	SV self; / the perl counterpart of this request, if any */
74		87
75	SV data, callback;	88	SV data, callback;
76	SV fh, fh2;	89	SV fh, fh2;
77	void dataptr, data2ptr;	90	void dataptr, data2ptr;
78	Stat_t *statdata;	91	Stat_t *statdata;
79	off_t offset;	92	off_t offset;
80	size_t length;	93	size_t length;
81	ssize_t result;	94	ssize_t result;
82		95
		96	STRLEN dataoffset;
83	int type;	97	int type;
84	int fd, fd2;	98	int fd, fd2;
85	int errorno;	99	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	100	mode_t mode; /* open */
		101
88	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;
89	} aio_cb;	107	} aio_cb;
		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
90		112
91	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	114	typedef aio_cb *aio_req_ornot;
93	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	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		123	};
		124
		125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
94		126
95	static int started, wanted;	127	static int started, wanted;
96	static volatile int nreqs;	128	static volatile int nreqs;
97	static int max_outstanding = 1<<30;	129	static int max_outstanding = 1<<30;
98	static int respipe [2];	130	static int respipe [2];
99		131
		132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		134	#else
		135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		136	#endif
		137
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		141
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	142	/*
105	static volatile aio_req ress, rese; /* queue start, queue end */	143	* a somewhat faster data structure might be nice, but
		144	* with 8 priorities this actually needs <20 insns
		145	* per shift, the most expensive operation.
		146	*/
		147	typedef struct {
		148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		149	int size;
		150	} reqq;
106		151
		152	static reqq req_queue;
		153	static reqq res_queue;
		154
		155	int reqq_push (reqq *q, aio_req req)
		156	{
		157	int pri = req->pri;
		158	req->next = 0;
		159
		160	if (q->qe[pri])
		161	{
		162	q->qe[pri]->next = req;
		163	q->qe[pri] = req;
		164	}
		165	else
		166	q->qe[pri] = q->qs[pri] = req;
		167
		168	return q->size++;
		169	}
		170
		171	aio_req reqq_shift (reqq *q)
		172	{
		173	int pri;
		174
		175	if (!q->size)
		176	return 0;
		177
		178	--q->size;
		179
		180	for (pri = NUM_PRI; pri--; )
		181	{
		182	aio_req req = q->qs[pri];
		183
		184	if (req)
		185	{
		186	if (!(q->qs[pri] = req->next))
		187	q->qe[pri] = 0;
		188
		189	return req;
		190	}
		191	}
		192
		193	abort ();
		194	}
		195
		196	static void req_invoke (aio_req req);
107	static void req_free (aio_req req);	197	static void req_free (aio_req req);
108		198
109	/* must be called at most once */	199	/* must be called at most once */
110	static SV req_sv (aio_req req, const char klass)	200	static SV req_sv (aio_req req, const char klass)
111	{	201	{
		202	if (!req->self)
		203	{
112	req->self = (SV *)newHV ();	204	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		206	}
114		207
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
116	}	209	}
117		210
118	static aio_req SvAIO_REQ (SV *sv)	211	static aio_req SvAIO_REQ (SV *sv)
119	{	212	{
		213	MAGIC *mg;
		214
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	215	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
121	croak ("object of class " AIO_REQ_KLASS " expected");	216	croak ("object of class " AIO_REQ_KLASS " expected");
122		217
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		219
125	return mg ? (aio_req)mg->mg_ptr : 0;	220	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	221	}
127		222
		223	static void aio_grp_feed (aio_req grp)
		224	{
		225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		226	{
		227	int old_len = grp->length;
		228
		229	if (grp->fh2 && SvOK (grp->fh2))
		230	{
		231	dSP;
		232
		233	ENTER;
		234	SAVETMPS;
		235	PUSHMARK (SP);
		236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		237	PUTBACK;
		238	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		239	SPAGAIN;
		240	FREETMPS;
		241	LEAVE;
		242	}
		243
		244	/* stop if no progress has been made */
		245	if (old_len == grp->length)
		246	{
		247	SvREFCNT_dec (grp->fh2);
		248	grp->fh2 = 0;
		249	break;
		250	}
		251	}
		252	}
		253
		254	static void aio_grp_dec (aio_req grp)
		255	{
		256	--grp->length;
		257
		258	/* call feeder, if applicable */
		259	aio_grp_feed (grp);
		260
		261	/* finish, if done */
		262	if (!grp->length && grp->fd)
		263	{
		264	req_invoke (grp);
		265	req_free (grp);
		266	}
		267	}
		268
128	static void poll_wait ()	269	static void poll_wait ()
129	{	270	{
130	if (nreqs && !ress)
131	{
132	fd_set rfd;	271	fd_set rfd;
		272
		273	while (nreqs)
		274	{
		275	int size;
		276	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		277	pthread_mutex_lock (&reslock);
		278	#endif
		279	size = res_queue.size;
		280	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		281	pthread_mutex_unlock (&reslock);
		282	#endif
		283
		284	if (size)
		285	return;
		286
133	FD_ZERO(&rfd);	287	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);	288	FD_SET(respipe [0], &rfd);
135		289
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	290	select (respipe [0] + 1, &rfd, 0, 0, 0);
137	}	291	}
138	}	292	}
139		293
140	static void req_invoke (aio_req req)	294	static void req_invoke (aio_req req)
141	{	295	{
142	dSP;	296	dSP;
143	int errorno = errno;
144		297
145	if (req->cancelled \|\| !SvOK (req->callback))	298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
146	return;	299	{
147
148	errno = req->errorno;	300	errno = req->errorno;
149		301
150	ENTER;	302	ENTER;
		303	SAVETMPS;
151	PUSHMARK (SP);	304	PUSHMARK (SP);
		305	EXTEND (SP, 1);
152		306
153	switch (req->type)	307	switch (req->type)
154	{
155	case REQ_READDIR:
156	{	308	{
157	SV *rv = &PL_sv_undef;	309	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	310	{
161	char *buf = req->data2ptr;	311	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		312
164	while (req->result)	313	if (req->result >= 0)
165	{	314	{
		315	char *buf = req->data2ptr;
		316	AV *av = newAV ();
		317
		318	while (req->result)
		319	{
166	SV *sv = newSVpv (buf, 0);	320	SV *sv = newSVpv (buf, 0);
167		321
168	av_push (av, sv);	322	av_push (av, sv);
169	buf += SvCUR (sv) + 1;	323	buf += SvCUR (sv) + 1;
170	req->result--;	324	req->result--;
		325	}
		326
		327	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	328	}
172		329
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	330	PUSHs (rv);
174	}	331	}
		332	break;
175		333
176	XPUSHs (rv);	334	case REQ_OPEN:
		335	{
		336	/* convert fd to fh */
		337	SV *fh;
		338
		339	PUSHs (sv_2mortal (newSViv (req->result)));
		340	PUTBACK;
		341	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		342	SPAGAIN;
		343
		344	fh = SvREFCNT_inc (POPs);
		345
		346	PUSHMARK (SP);
		347	XPUSHs (sv_2mortal (fh));
		348	}
		349	break;
		350
		351	case REQ_GROUP:
		352	req->fd = 2; /* mark group as finished */
		353
		354	if (req->data)
		355	{
		356	int i;
		357	AV av = (AV )req->data;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case REQ_NOP:
		366	case REQ_BUSY:
		367	break;
		368
		369	default:
		370	PUSHs (sv_2mortal (newSViv (req->result)));
		371	break;
177	}	372	}
178	break;
179		373
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184		374
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	375	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
188	SPAGAIN;
189
190	fh = SvREFCNT_inc (POPs);
191
192	PUSHMARK (SP);
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_SLEEP:
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}
205
206
207	PUTBACK;
208	call_sv (req->callback, G_VOID \| G_EVAL);	376	call_sv (req->callback, G_VOID \| G_EVAL);
209	SPAGAIN;	377	SPAGAIN;
		378
		379	FREETMPS;
		380	LEAVE;
		381	}
		382
		383	if (req->grp)
		384	{
		385	aio_req grp = req->grp;
		386
		387	/* unlink request */
		388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		390
		391	if (grp->grp_first == req)
		392	grp->grp_first = req->grp_next;
		393
		394	aio_grp_dec (grp);
		395	}
210		396
211	if (SvTRUE (ERRSV))	397	if (SvTRUE (ERRSV))
212	{	398	{
213	req_free (req);	399	req_free (req);
214	croak (0);	400	croak (0);
215	}	401	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	402	}
221		403
222	static void req_free (aio_req req)	404	static void req_free (aio_req req)
223	{	405	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	406	if (req->self)
240	{	407	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	408	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	409	SvREFCNT_dec (req->self);
243	}	410	}
244		411
245	if (req->data)
246	SvREFCNT_dec (req->data);	412	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	413	SvREFCNT_dec (req->fh);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	414	SvREFCNT_dec (req->fh2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	415	SvREFCNT_dec (req->callback);
		416	Safefree (req->statdata);
259		417
260	if (req->type == REQ_READDIR && req->result >= 0)	418	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);	419	free (req->data2ptr);
262		420
263	Safefree (req);	421	Safefree (req);
264	}	422	}
265		423
266	static void req_cancel (aio_req req)	424	static void req_cancel (aio_req req)
267	{	425	{
268	req->cancelled = 1;	426	req->flags \|= FLAG_CANCELLED;
269		427
270	if (req->type == REQ_GROUP)	428	if (req->type == REQ_GROUP)
271	{	429	{
272	aio_req sub;	430	aio_req sub;
273		431
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	432	for (sub = req->grp_first; sub; sub = sub->grp_next)
275	req_cancel (sub);	433	req_cancel (sub);
276	}	434	}
277	}	435	}
278		436
279	static int poll_cb ()	437	static int poll_cb ()
…		…
284	aio_req req;	442	aio_req req;
285		443
286	for (;;)	444	for (;;)
287	{	445	{
288	pthread_mutex_lock (&reslock);	446	pthread_mutex_lock (&reslock);
289	req = ress;	447	req = reqq_shift (&res_queue);
290		448
291	if (req)	449	if (req)
292	{	450	{
293	ress = req->next;
294
295	if (!ress)	451	if (!res_queue.size)
296	{	452	{
297	/* read any signals sent by the worker threads */	453	/* read any signals sent by the worker threads */
298	char buf [32];	454	char buf [32];
299	while (read (respipe [0], buf, 32) == 32)	455	while (read (respipe [0], buf, 32) == 32)
300	;	456	;
301
302	rese = 0;
303	}	457	}
304	}	458	}
305		459
306	pthread_mutex_unlock (&reslock);	460	pthread_mutex_unlock (&reslock);
307		461
308	if (!req)	462	if (!req)
309	break;	463	break;
310		464
311	nreqs--;	465	--nreqs;
312		466
313	if (req->type == REQ_QUIT)	467	if (req->type == REQ_QUIT)
314	started--;	468	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)	469	else if (req->type == REQ_GROUP && req->length)
		470	{
		471	req->fd = 1; /* mark request as delayed */
316	continue;	472	continue;
		473	}
317	else	474	else
318	{	475	{
319	if (req->type == REQ_READ)	476	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321		478
…		…
364	static void req_send (aio_req req)	521	static void req_send (aio_req req)
365	{	522	{
366	while (started < wanted && nreqs >= started)	523	while (started < wanted && nreqs >= started)
367	start_thread ();	524	start_thread ();
368		525
369	nreqs++;	526	++nreqs;
370		527
371	pthread_mutex_lock (&reqlock);	528	pthread_mutex_lock (&reqlock);
372		529	reqq_push (&req_queue, req);
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);	530	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);	531	pthread_mutex_unlock (&reqlock);
385		532
386	if (nreqs > max_outstanding)	533	if (nreqs > max_outstanding)
387	for (;;)	534	for (;;)
…		…
396	}	543	}
397		544
398	static void end_thread (void)	545	static void end_thread (void)
399	{	546	{
400	aio_req req;	547	aio_req req;
		548
401	Newz (0, req, 1, aio_cb);	549	Newz (0, req, 1, aio_cb);
		550
402	req->type = REQ_QUIT;	551	req->type = REQ_QUIT;
		552	req->pri = PRI_MAX + PRI_BIAS;
403		553
404	req_send (req);	554	req_send (req);
405	}	555	}
406		556
407	static void min_parallel (int nthreads)	557	static void min_parallel (int nthreads)
…		…
494	#if !HAVE_READAHEAD	644	#if !HAVE_READAHEAD
495	# define readahead aio_readahead	645	# define readahead aio_readahead
496		646
497	static ssize_t readahead (int fd, off_t offset, size_t count)	647	static ssize_t readahead (int fd, off_t offset, size_t count)
498	{	648	{
499	char readahead_buf[4096];	649	dBUF;
500		650
501	while (count > 0)	651	while (count > 0)
502	{	652	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
504		654
505	pread (fd, readahead_buf, len, offset);	655	pread (fd, aio_buf, len, offset);
506	offset += len;	656	offset += len;
507	count -= len;	657	count -= len;
508	}	658	}
		659
		660	fBUF;
509		661
510	errno = 0;	662	errno = 0;
511	}	663	}
512	#endif	664	#endif
513		665
…		…
599	#endif	751	#endif
600	)	752	)
601	)	753	)
602	{	754	{
603	/* emulate sendfile. this is a major pain in the ass */	755	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];	756	dBUF;
		757
605	res = 0;	758	res = 0;
606		759
607	while (count)	760	while (count)
608	{	761	{
609	ssize_t cnt;	762	ssize_t cnt;
610		763
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
612		765
613	if (cnt <= 0)	766	if (cnt <= 0)
614	{	767	{
615	if (cnt && !res) res = -1;	768	if (cnt && !res) res = -1;
616	break;	769	break;
617	}	770	}
618		771
619	cnt = write (ofd, buf, cnt);	772	cnt = write (ofd, aio_buf, cnt);
620		773
621	if (cnt <= 0)	774	if (cnt <= 0)
622	{	775	{
623	if (cnt && !res) res = -1;	776	if (cnt && !res) res = -1;
624	break;	777	break;
…		…
626		779
627	offset += cnt;	780	offset += cnt;
628	res += cnt;	781	res += cnt;
629	count -= cnt;	782	count -= cnt;
630	}	783	}
		784
		785	fBUF;
631	}	786	}
632		787
633	return res;	788	return res;
634	}	789	}
635		790
636	/* read a full directory */	791	/* read a full directory */
637	static int scandir_ (const char path, void *namesp)	792	static int scandir_ (const char path, void *namesp)
638	{	793	{
639	DIR *dirp = opendir (path);	794	DIR *dirp;
640	union	795	union
641	{	796	{
642	struct dirent d;	797	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;	799	} *u;
645	struct dirent *entp;	800	struct dirent *entp;
646	char name, names;	801	char name, names;
647	int memlen = 4096;	802	int memlen = 4096;
648	int memofs = 0;	803	int memofs = 0;
649	int res = 0;	804	int res = 0;
650	int errorno;	805	int errorno;
651		806
		807	dirp = opendir (path);
652	if (!dirp)	808	if (!dirp)
653	return -1;	809	return -1;
654		810
		811	u = malloc (sizeof (*u));
655	names = malloc (memlen);	812	names = malloc (memlen);
656		813
		814	if (u && names)
657	for (;;)	815	for (;;)
658	{	816	{
		817	errno = 0;
659	errno = 0, readdir_r (dirp, &u.d, &entp);	818	readdir_r (dirp, &u->d, &entp);
660		819
661	if (!entp)	820	if (!entp)
662	break;	821	break;
663		822
664	name = entp->d_name;	823	name = entp->d_name;
665		824
666	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	825	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
667	{	826	{
668	int len = strlen (name) + 1;	827	int len = strlen (name) + 1;
669		828
670	res++;	829	res++;
671		830
672	while (memofs + len > memlen)	831	while (memofs + len > memlen)
673	{	832	{
674	memlen *= 2;	833	memlen *= 2;
675	names = realloc (names, memlen);	834	names = realloc (names, memlen);
676	if (!names)	835	if (!names)
677	break;	836	break;
678	}	837	}
679		838
680	memcpy (names + memofs, name, len);	839	memcpy (names + memofs, name, len);
681	memofs += len;	840	memofs += len;
682	}	841	}
683	}	842	}
684		843
685	errorno = errno;	844	errorno = errno;
		845	free (u);
686	closedir (dirp);	846	closedir (dirp);
687		847
688	if (errorno)	848	if (errorno)
689	{	849	{
690	free (names);	850	free (names);
…		…
707	{	867	{
708	pthread_mutex_lock (&reqlock);	868	pthread_mutex_lock (&reqlock);
709		869
710	for (;;)	870	for (;;)
711	{	871	{
712	req = reqs;	872	req = reqq_shift (&req_queue);
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719		873
720	if (req)	874	if (req)
721	break;	875	break;
722		876
723	pthread_cond_wait (&reqwait, &reqlock);	877	pthread_cond_wait (&reqwait, &reqlock);
724	}	878	}
725		879
726	pthread_mutex_unlock (&reqlock);	880	pthread_mutex_unlock (&reqlock);
727		881
728	errno = 0; /* strictly unnecessary */	882	errno = 0; /* strictly unnecessary */
		883	type = req->type; /* remember type for QUIT check */
729		884
730	if (!req->cancelled)	885	if (!(req->flags & FLAG_CANCELLED))
731	switch (req->type)	886	switch (type)
732	{	887	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
735		890
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
…		…
750		905
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;	907	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754		909
755	case REQ_SLEEP:	910	case REQ_BUSY:
756	{	911	{
757	struct timeval tv;	912	struct timeval tv;
758		913
759	tv.tv_sec = req->fd;	914	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;	915	tv.tv_usec = req->fd2;
761		916
762	req->result = select (0, 0, 0, 0, &tv);	917	req->result = select (0, 0, 0, 0, &tv);
763	}	918	}
764		919
		920	case REQ_GROUP:
		921	case REQ_NOP:
765	case REQ_QUIT:	922	case REQ_QUIT:
766	break;	923	break;
767		924
768	default:	925	default:
769	req->result = ENOSYS;	926	req->result = ENOSYS;
…		…
772		929
773	req->errorno = errno;	930	req->errorno = errno;
774		931
775	pthread_mutex_lock (&reslock);	932	pthread_mutex_lock (&reslock);
776		933
777	req->next = 0;	934	if (!reqq_push (&res_queue, req))
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}
784	else
785	{
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */	935	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);	936	write (respipe [1], &respipe, 1);
790	}
791		937
792	pthread_mutex_unlock (&reslock);	938	pthread_mutex_unlock (&reslock);
793	}	939	}
794	while (type != REQ_QUIT);	940	while (type != REQ_QUIT);
795		941
…		…
826	{	972	{
827	aio_req prv;	973	aio_req prv;
828		974
829	started = 0;	975	started = 0;
830		976
831	while (reqs)	977	while (prv = reqq_shift (&req_queue))
832	{
833	prv = reqs;
834	reqs = prv->next;
835	req_free (prv);	978	req_free (prv);
836	}
837		979
838	reqs = reqe = 0;	980	while (prv = reqq_shift (&res_queue))
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);	981	req_free (prv);
845	}	982
846
847	ress = rese = 0;
848
849	close (respipe [0]);	983	close (respipe [0]);
850	close (respipe [1]);	984	close (respipe [1]);
851	create_pipe ();	985	create_pipe ();
852		986
853	atfork_parent ();	987	atfork_parent ();
854	}	988	}
855		989
856	#define dREQ \	990	#define dREQ \
857	aio_req req; \	991	aio_req req; \
		992	int req_pri = next_pri; \
		993	next_pri = DEFAULT_PRI + PRI_BIAS; \
858	\	994	\
859	if (SvOK (callback) && !SvROK (callback)) \	995	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \	996	croak ("callback must be undef or of reference type"); \
861	\	997	\
862	Newz (0, req, 1, aio_cb); \	998	Newz (0, req, 1, aio_cb); \
863	if (!req) \	999	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	1000	croak ("out of memory during aio_req allocation"); \
865	\	1001	\
866	req->callback = newSVsv (callback)	1002	req->callback = newSVsv (callback); \
		1003	req->pri = req_pri
867		1004
868	#define REQ_SEND \	1005	#define REQ_SEND \
869	req_send (req); \	1006	req_send (req); \
870	\	1007	\
871	if (GIMME_V != G_VOID) \	1008	if (GIMME_V != G_VOID) \
…		…
1125		1262
1126	REQ_SEND;	1263	REQ_SEND;
1127	}	1264	}
1128		1265
1129	void	1266	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1267	aio_busy (delay,callback=&PL_sv_undef)
1131	double delay	1268	double delay
1132	SV * callback	1269	SV * callback
1133	PPCODE:	1270	PPCODE:
1134	{	1271	{
1135	dREQ;	1272	dREQ;
1136		1273
1137	req->type = REQ_SLEEP;	1274	req->type = REQ_BUSY;
1138	req->fd = delay < 0. ? 0 : delay;	1275	req->fd = delay < 0. ? 0 : delay;
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1140		1277
1141	REQ_SEND;	1278	REQ_SEND;
1142	}	1279	}
1143		1280
1144	void	1281	void
1145	aio_group (callback=&PL_sv_undef)	1282	aio_group (callback=&PL_sv_undef)
1146	SV * callback	1283	SV * callback
1147	PROTOTYPE: ;&	1284	PROTOTYPE: ;$
1148	PPCODE:	1285	PPCODE:
1149	{	1286	{
1150	dREQ;	1287	dREQ;
		1288
1151	req->type = REQ_GROUP;	1289	req->type = REQ_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154
1155	req_send (req);	1290	req_send (req);
		1291
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1157	}	1293	}
		1294
		1295	void
		1296	aio_nop (callback=&PL_sv_undef)
		1297	SV * callback
		1298	PPCODE:
		1299	{
		1300	dREQ;
		1301
		1302	req->type = REQ_NOP;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
		1308	aioreq_pri (int pri = DEFAULT_PRI)
		1309	CODE:
		1310	if (pri < PRI_MIN) pri = PRI_MIN;
		1311	if (pri > PRI_MAX) pri = PRI_MAX;
		1312	next_pri = pri + PRI_BIAS;
		1313
		1314	void
		1315	aioreq_nice (int nice = 0)
		1316	CODE:
		1317	nice = next_pri - nice;
		1318	if (nice < PRI_MIN) nice = PRI_MIN;
		1319	if (nice > PRI_MAX) nice = PRI_MAX;
		1320	next_pri = nice + PRI_BIAS;
1158		1321
1159	void	1322	void
1160	flush ()	1323	flush ()
1161	PROTOTYPE:	1324	PROTOTYPE:
1162	CODE:	1325	CODE:
…		…
1205	CODE:	1368	CODE:
1206	RETVAL = nreqs;	1369	RETVAL = nreqs;
1207	OUTPUT:	1370	OUTPUT:
1208	RETVAL	1371	RETVAL
1209		1372
		1373	PROTOTYPES: DISABLE
		1374
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1376
1212	void	1377	void
1213	cancel (aio_req_ornot req)	1378	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1379	CODE:
1216	req_cancel (req);	1380	req_cancel (req);
1217		1381
		1382	void
		1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1384	CODE:
		1385	SvREFCNT_dec (req->callback);
		1386	req->callback = newSVsv (callback);
		1387
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1389
1220	void	1390	void
1221	add (aio_req grp, ...)	1391	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1392	PPCODE:
1224	{	1393	{
1225	int i;	1394	int i;
		1395	aio_req req;
		1396
		1397	if (grp->fd == 2)
		1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1399
1227	for (i = 1; i < items; ++i )	1400	for (i = 1; i < items; ++i )
1228	{	1401	{
1229	aio_req req = SvAIO_REQ (ST (i));
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237
1238	if (GIMME_V != G_VOID)	1402	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1404
		1405	req = SvAIO_REQ (ST (i));
		1406
		1407	if (req)
		1408	{
		1409	++grp->length;
		1410	req->grp = grp;
		1411
		1412	req->grp_prev = 0;
		1413	req->grp_next = grp->grp_first;
		1414
		1415	if (grp->grp_first)
		1416	grp->grp_first->grp_prev = req;
		1417
		1418	grp->grp_first = req;
		1419	}
1240	}	1420	}
1241	}	1421	}
1242		1422
		1423	void
		1424	result (aio_req grp, ...)
		1425	CODE:
		1426	{
		1427	int i;
		1428	AV *av = newAV ();
		1429
		1430	for (i = 1; i < items; ++i )
		1431	av_push (av, newSVsv (ST (i)));
		1432
		1433	SvREFCNT_dec (grp->data);
		1434	grp->data = (SV *)av;
		1435	}
		1436
		1437	void
		1438	limit (aio_req grp, int limit)
		1439	CODE:
		1440	grp->fd2 = limit;
		1441	aio_grp_feed (grp);
		1442
		1443	void
		1444	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1445	CODE:
		1446	{
		1447	SvREFCNT_dec (grp->fh2);
		1448	grp->fh2 = newSVsv (callback);
		1449
		1450	if (grp->fd2 <= 0)
		1451	grp->fd2 = 2;
		1452
		1453	aio_grp_feed (grp);
		1454	}
		1455

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs. Revision 1.69 by root, Tue Oct 24 11:57:30 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.69 by root, Tue Oct 24 11:57:30 2006 UTC