[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 1.70 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 grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	89	struct aio_cb *volatile next;
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;
93	typedef aio_cb *aio_group;	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;
94		129
95	static int started, wanted;	130	static int started, wanted;
96	static volatile int nreqs;	131	static volatile int nreqs;
97	static int max_outstanding = 1<<30;	132	static int max_outstanding = 1<<30;
98	static int respipe [2];	133	static int respipe [2];
99		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
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		144
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	145	/*
105	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;
106		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	}
		198
		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 */
110	static SV req_sv (aio_req req, const char klass)	203	static SV req_sv (aio_req req, const char klass)
111	{	204	{
		205	if (!req->self)
		206	{
112	req->self = (SV *)newHV ();	207	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		209	}
114		210
115	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)));
116	}	212	}
117		213
118	static aio_req SvAIO_REQ (SV *sv)	214	static aio_req SvAIO_REQ (SV *sv)
119	{	215	{
		216	MAGIC *mg;
		217
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	218	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
121	croak ("object of class " AIO_REQ_KLASS " expected");	219	croak ("object of class " AIO_REQ_KLASS " expected");
122		220
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		222
125	return mg ? (aio_req)mg->mg_ptr : 0;	223	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	224	}
127		225
		226	static void aio_grp_feed (aio_req grp)
		227	{
		228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		229	{
		230	int old_len = grp->length;
		231
		232	if (grp->fh2 && SvOK (grp->fh2))
		233	{
		234	dSP;
		235
		236	ENTER;
		237	SAVETMPS;
		238	PUSHMARK (SP);
		239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		240	PUTBACK;
		241	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		242	SPAGAIN;
		243	FREETMPS;
		244	LEAVE;
		245	}
		246
		247	/* stop if no progress has been made */
		248	if (old_len == grp->length)
		249	{
		250	SvREFCNT_dec (grp->fh2);
		251	grp->fh2 = 0;
		252	break;
		253	}
		254	}
		255	}
		256
		257	static void aio_grp_dec (aio_req grp)
		258	{
		259	--grp->length;
		260
		261	/* call feeder, if applicable */
		262	aio_grp_feed (grp);
		263
		264	/* finish, if done */
		265	if (!grp->length && grp->fd)
		266	{
		267	req_invoke (grp);
		268	req_free (grp);
		269	}
		270	}
		271
128	static void poll_wait ()	272	static void poll_wait ()
129	{	273	{
130	if (nreqs && !ress)
131	{
132	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
133	FD_ZERO(&rfd);	290	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);	291	FD_SET(respipe [0], &rfd);
135		292
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	293	select (respipe [0] + 1, &rfd, 0, 0, 0);
137	}	294	}
138	}	295	}
139		296
140	static void req_invoke (aio_req req)	297	static void req_invoke (aio_req req)
141	{	298	{
142	dSP;	299	dSP;
143	int errorno = errno;
144		300
145	if (req->cancelled \|\| !SvOK (req->callback))	301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
146	return;	302	{
147
148	errno = req->errorno;	303	errno = req->errorno;
149		304
150	ENTER;	305	ENTER;
		306	SAVETMPS;
151	PUSHMARK (SP);	307	PUSHMARK (SP);
		308	EXTEND (SP, 1);
152		309
153	switch (req->type)	310	switch (req->type)
154	{
155	case REQ_READDIR:
156	{	311	{
157	SV *rv = &PL_sv_undef;	312	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	313	{
161	char *buf = req->data2ptr;	314	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		315
164	while (req->result)	316	if (req->result >= 0)
165	{	317	{
		318	char *buf = req->data2ptr;
		319	AV *av = newAV ();
		320
		321	while (req->result)
		322	{
166	SV *sv = newSVpv (buf, 0);	323	SV *sv = newSVpv (buf, 0);
167		324
168	av_push (av, sv);	325	av_push (av, sv);
169	buf += SvCUR (sv) + 1;	326	buf += SvCUR (sv) + 1;
170	req->result--;	327	req->result--;
		328	}
		329
		330	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	331	}
172		332
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	333	PUSHs (rv);
174	}	334	}
		335	break;
175		336
176	XPUSHs (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;
177	}	375	}
178	break;
179		376
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184		377
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	378	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);	379	call_sv (req->callback, G_VOID \| G_EVAL);
209	SPAGAIN;	380	SPAGAIN;
		381
		382	FREETMPS;
		383	LEAVE;
		384	}
		385
		386	if (req->grp)
		387	{
		388	aio_req grp = req->grp;
		389
		390	/* unlink request */
		391	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		392	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		393
		394	if (grp->grp_first == req)
		395	grp->grp_first = req->grp_next;
		396
		397	aio_grp_dec (grp);
		398	}
210		399
211	if (SvTRUE (ERRSV))	400	if (SvTRUE (ERRSV))
212	{	401	{
213	req_free (req);	402	req_free (req);
214	croak (0);	403	croak (0);
215	}	404	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	405	}
221		406
222	static void req_free (aio_req req)	407	static void req_free (aio_req req)
223	{	408	{
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)	409	if (req->self)
240	{	410	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	411	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	412	SvREFCNT_dec (req->self);
243	}	413	}
244		414
245	if (req->data)
246	SvREFCNT_dec (req->data);	415	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	416	SvREFCNT_dec (req->fh);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	417	SvREFCNT_dec (req->fh2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	418	SvREFCNT_dec (req->callback);
		419	Safefree (req->statdata);
259		420
260	if (req->type == REQ_READDIR && req->result >= 0)	421	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);	422	free (req->data2ptr);
262		423
263	Safefree (req);	424	Safefree (req);
264	}	425	}
265		426
266	static void req_cancel (aio_req req)	427	static void req_cancel (aio_req req)
267	{	428	{
268	req->cancelled = 1;	429	req->flags \|= FLAG_CANCELLED;
269		430
270	if (req->type == REQ_GROUP)	431	if (req->type == REQ_GROUP)
271	{	432	{
272	aio_req sub;	433	aio_req sub;
273		434
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	435	for (sub = req->grp_first; sub; sub = sub->grp_next)
275	req_cancel (sub);	436	req_cancel (sub);
276	}	437	}
277	}	438	}
278		439
279	static int poll_cb ()	440	static int poll_cb ()
…		…
284	aio_req req;	445	aio_req req;
285		446
286	for (;;)	447	for (;;)
287	{	448	{
288	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
289	req = ress;	450	req = reqq_shift (&res_queue);
290		451
291	if (req)	452	if (req)
292	{	453	{
293	ress = req->next;
294
295	if (!ress)	454	if (!res_queue.size)
296	{	455	{
297	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
298	char buf [32];	457	char buf [32];
299	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
300	;	459	;
301
302	rese = 0;
303	}	460	}
304	}	461	}
305		462
306	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
307		464
308	if (!req)	465	if (!req)
309	break;	466	break;
310		467
311	nreqs--;	468	--nreqs;
312		469
313	if (req->type == REQ_QUIT)	470	if (req->type == REQ_QUIT)
314	started--;	471	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)	472	else if (req->type == REQ_GROUP && req->length)
		473	{
		474	req->fd = 1; /* mark request as delayed */
316	continue;	475	continue;
		476	}
317	else	477	else
318	{	478	{
319	if (req->type == REQ_READ)	479	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321		481
…		…
364	static void req_send (aio_req req)	524	static void req_send (aio_req req)
365	{	525	{
366	while (started < wanted && nreqs >= started)	526	while (started < wanted && nreqs >= started)
367	start_thread ();	527	start_thread ();
368		528
369	nreqs++;	529	++nreqs;
370		530
371	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
372		532	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);	533	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
385		535
386	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
387	for (;;)	537	for (;;)
…		…
396	}	546	}
397		547
398	static void end_thread (void)	548	static void end_thread (void)
399	{	549	{
400	aio_req req;	550	aio_req req;
		551
401	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
402	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
403		556
404	req_send (req);	557	req_send (req);
405	}	558	}
406		559
407	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
…		…
494	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
495	# define readahead aio_readahead	648	# define readahead aio_readahead
496		649
497	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)
498	{	651	{
499	char readahead_buf[4096];	652	dBUF;
500		653
501	while (count > 0)	654	while (count > 0)
502	{	655	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
504		657
505	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
506	offset += len;	659	offset += len;
507	count -= len;	660	count -= len;
508	}	661	}
		662
		663	fBUF;
509		664
510	errno = 0;	665	errno = 0;
511	}	666	}
512	#endif	667	#endif
513		668
…		…
599	#endif	754	#endif
600	)	755	)
601	)	756	)
602	{	757	{
603	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];	759	dBUF;
		760
605	res = 0;	761	res = 0;
606		762
607	while (count)	763	while (count)
608	{	764	{
609	ssize_t cnt;	765	ssize_t cnt;
610		766
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
612		768
613	if (cnt <= 0)	769	if (cnt <= 0)
614	{	770	{
615	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
616	break;	772	break;
617	}	773	}
618		774
619	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
620		776
621	if (cnt <= 0)	777	if (cnt <= 0)
622	{	778	{
623	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
624	break;	780	break;
…		…
626		782
627	offset += cnt;	783	offset += cnt;
628	res += cnt;	784	res += cnt;
629	count -= cnt;	785	count -= cnt;
630	}	786	}
		787
		788	fBUF;
631	}	789	}
632		790
633	return res;	791	return res;
634	}	792	}
635		793
636	/* read a full directory */	794	/* read a full directory */
637	static int scandir_ (const char path, void *namesp)	795	static int scandir_ (const char path, void *namesp)
638	{	796	{
639	DIR *dirp = opendir (path);	797	DIR *dirp;
640	union	798	union
641	{	799	{
642	struct dirent d;	800	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;	802	} *u;
645	struct dirent *entp;	803	struct dirent *entp;
646	char name, names;	804	char name, names;
647	int memlen = 4096;	805	int memlen = 4096;
648	int memofs = 0;	806	int memofs = 0;
649	int res = 0;	807	int res = 0;
650	int errorno;	808	int errorno;
651		809
		810	dirp = opendir (path);
652	if (!dirp)	811	if (!dirp)
653	return -1;	812	return -1;
654		813
		814	u = malloc (sizeof (*u));
655	names = malloc (memlen);	815	names = malloc (memlen);
656		816
		817	if (u && names)
657	for (;;)	818	for (;;)
658	{	819	{
		820	errno = 0;
659	errno = 0, readdir_r (dirp, &u.d, &entp);	821	readdir_r (dirp, &u->d, &entp);
660		822
661	if (!entp)	823	if (!entp)
662	break;	824	break;
663		825
664	name = entp->d_name;	826	name = entp->d_name;
665		827
666	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	828	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
667	{	829	{
668	int len = strlen (name) + 1;	830	int len = strlen (name) + 1;
669		831
670	res++;	832	res++;
671		833
672	while (memofs + len > memlen)	834	while (memofs + len > memlen)
673	{	835	{
674	memlen *= 2;	836	memlen *= 2;
675	names = realloc (names, memlen);	837	names = realloc (names, memlen);
676	if (!names)	838	if (!names)
677	break;	839	break;
678	}	840	}
679		841
680	memcpy (names + memofs, name, len);	842	memcpy (names + memofs, name, len);
681	memofs += len;	843	memofs += len;
682	}	844	}
683	}	845	}
684		846
685	errorno = errno;	847	errorno = errno;
		848	free (u);
686	closedir (dirp);	849	closedir (dirp);
687		850
688	if (errorno)	851	if (errorno)
689	{	852	{
690	free (names);	853	free (names);
…		…
707	{	870	{
708	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
709		872
710	for (;;)	873	for (;;)
711	{	874	{
712	req = reqs;	875	req = reqq_shift (&req_queue);
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719		876
720	if (req)	877	if (req)
721	break;	878	break;
722		879
723	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
724	}	881	}
725		882
726	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
727		884
728	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
		886	type = req->type; /* remember type for QUIT check */
729		887
730	if (!req->cancelled)	888	if (!(req->flags & FLAG_CANCELLED))
731	switch (req->type)	889	switch (type)
732	{	890	{
733	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;
734	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;
735		893
736	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;
…		…
750		908
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754		912
755	case REQ_SLEEP:	913	case REQ_BUSY:
756	{	914	{
757	struct timeval tv;	915	struct timeval tv;
758		916
759	tv.tv_sec = req->fd;	917	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;	918	tv.tv_usec = req->fd2;
761		919
762	req->result = select (0, 0, 0, 0, &tv);	920	req->result = select (0, 0, 0, 0, &tv);
763	}	921	}
764		922
		923	case REQ_GROUP:
		924	case REQ_NOP:
765	case REQ_QUIT:	925	case REQ_QUIT:
766	break;	926	break;
767		927
768	default:	928	default:
769	req->result = ENOSYS;	929	req->result = ENOSYS;
…		…
772		932
773	req->errorno = errno;	933	req->errorno = errno;
774		934
775	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
776		936
777	req->next = 0;	937	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 */	938	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
790	}
791		940
792	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
793	}	942	}
794	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
795		944
…		…
826	{	975	{
827	aio_req prv;	976	aio_req prv;
828		977
829	started = 0;	978	started = 0;
830		979
831	while (reqs)	980	while (prv = reqq_shift (&req_queue))
832	{
833	prv = reqs;
834	reqs = prv->next;
835	req_free (prv);	981	req_free (prv);
836	}
837		982
838	reqs = reqe = 0;	983	while (prv = reqq_shift (&res_queue))
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);	984	req_free (prv);
845	}	985
846
847	ress = rese = 0;
848
849	close (respipe [0]);	986	close (respipe [0]);
850	close (respipe [1]);	987	close (respipe [1]);
851	create_pipe ();	988	create_pipe ();
852		989
853	atfork_parent ();	990	atfork_parent ();
854	}	991	}
855		992
856	#define dREQ \	993	#define dREQ \
857	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
858	\	997	\
859	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
861	\	1000	\
862	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
863	if (!req) \	1002	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
865	\	1004	\
866	req->callback = newSVsv (callback)	1005	req->callback = newSVsv (callback); \
		1006	req->pri = req_pri
867		1007
868	#define REQ_SEND \	1008	#define REQ_SEND \
869	req_send (req); \	1009	req_send (req); \
870	\	1010	\
871	if (GIMME_V != G_VOID) \	1011	if (GIMME_V != G_VOID) \
…		…
1125		1265
1126	REQ_SEND;	1266	REQ_SEND;
1127	}	1267	}
1128		1268
1129	void	1269	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1270	aio_busy (delay,callback=&PL_sv_undef)
1131	double delay	1271	double delay
1132	SV * callback	1272	SV * callback
1133	PPCODE:	1273	PPCODE:
1134	{	1274	{
1135	dREQ;	1275	dREQ;
1136		1276
1137	req->type = REQ_SLEEP;	1277	req->type = REQ_BUSY;
1138	req->fd = delay < 0. ? 0 : delay;	1278	req->fd = delay < 0. ? 0 : delay;
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1140		1280
1141	REQ_SEND;	1281	REQ_SEND;
1142	}	1282	}
1143		1283
1144	void	1284	void
1145	aio_group (callback=&PL_sv_undef)	1285	aio_group (callback=&PL_sv_undef)
1146	SV * callback	1286	SV * callback
1147	PROTOTYPE: ;&	1287	PROTOTYPE: ;$
1148	PPCODE:	1288	PPCODE:
1149	{	1289	{
1150	dREQ;	1290	dREQ;
		1291
1151	req->type = REQ_GROUP;	1292	req->type = REQ_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154
1155	req_send (req);	1293	req_send (req);
		1294
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1157	}	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;
1158		1324
1159	void	1325	void
1160	flush ()	1326	flush ()
1161	PROTOTYPE:	1327	PROTOTYPE:
1162	CODE:	1328	CODE:
…		…
1205	CODE:	1371	CODE:
1206	RETVAL = nreqs;	1372	RETVAL = nreqs;
1207	OUTPUT:	1373	OUTPUT:
1208	RETVAL	1374	RETVAL
1209		1375
		1376	PROTOTYPES: DISABLE
		1377
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1379
1212	void	1380	void
1213	cancel (aio_req_ornot req)	1381	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1382	CODE:
1216	req_cancel (req);	1383	req_cancel (req);
1217		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
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1392
1220	void	1393	void
1221	add (aio_req grp, ...)	1394	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1395	PPCODE:
1224	{	1396	{
1225	int i;	1397	int i;
		1398	aio_req req;
		1399
		1400	if (grp->fd == 2)
		1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1402
1227	for (i = 1; i < items; ++i )	1403	for (i = 1; i < items; ++i )
1228	{	1404	{
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)	1405	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1407
		1408	req = SvAIO_REQ (ST (i));
		1409
		1410	if (req)
		1411	{
		1412	++grp->length;
		1413	req->grp = grp;
		1414
		1415	req->grp_prev = 0;
		1416	req->grp_next = grp->grp_first;
		1417
		1418	if (grp->grp_first)
		1419	grp->grp_first->grp_prev = req;
		1420
		1421	grp->grp_first = req;
		1422	}
1240	}	1423	}
1241	}	1424	}
1242		1425
		1426	void
		1427	result (aio_req grp, ...)
		1428	CODE:
		1429	{
		1430	int i;
		1431	AV *av = newAV ();
		1432
		1433	for (i = 1; i < items; ++i )
		1434	av_push (av, newSVsv (ST (i)));
		1435
		1436	SvREFCNT_dec (grp->data);
		1437	grp->data = (SV *)av;
		1438	}
		1439
		1440	void
		1441	limit (aio_req grp, int limit)
		1442	CODE:
		1443	grp->fd2 = limit;
		1444	aio_grp_feed (grp);
		1445
		1446	void
		1447	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1448	CODE:
		1449	{
		1450	SvREFCNT_dec (grp->fh2);
		1451	grp->fh2 = newSVsv (callback);
		1452
		1453	if (grp->fd2 <= 0)
		1454	grp->fd2 = 2;
		1455
		1456	aio_grp_feed (grp);
		1457	}
		1458

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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 1.70 by root, Tue Oct 24 15:15:56 2006 UTC

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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 1.70 by root, Tue Oct 24 15:15:56 2006 UTC