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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 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;
		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;
105		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);
106	static void req_free (aio_req req);	200	static void req_free (aio_req req);
107		201
108	/* must be called at most once */	202	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	203	static SV req_sv (aio_req req, const char klass)
110	{	204	{
		205	if (!req->self)
		206	{
111	req->self = (SV *)newHV ();	207	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		209	}
113		210
114	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)));
115	}	212	}
116		213
117	static aio_req SvAIO_REQ (SV *sv)	214	static aio_req SvAIO_REQ (SV *sv)
118	{	215	{
		216	MAGIC *mg;
		217
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	218	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	219	croak ("object of class " AIO_REQ_KLASS " expected");
121		220
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		222
124	return mg ? (aio_req)mg->mg_ptr : 0;	223	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	224	}
126		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
127	static void poll_wait ()	272	static void poll_wait ()
128	{	273	{
129	if (nreqs && !ress)
130	{
131	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
132	FD_ZERO(&rfd);	290	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);	291	FD_SET(respipe [0], &rfd);
134		292
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	293	select (respipe [0] + 1, &rfd, 0, 0, 0);
136	}	294	}
137	}	295	}
138		296
139	static void req_invoke (aio_req req)	297	static void req_invoke (aio_req req)
140	{	298	{
141	dSP;	299	dSP;
142	int errorno = errno;
143		300
144	if (req->cancelled \|\| !SvOK (req->callback))	301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
145	return;	302	{
146
147	errno = req->errorno;	303	errno = req->errorno;
148		304
149	ENTER;	305	ENTER;
		306	SAVETMPS;
150	PUSHMARK (SP);	307	PUSHMARK (SP);
		308	EXTEND (SP, 1);
151		309
152	switch (req->type)	310	switch (req->type)
153	{
154	case REQ_READDIR:
155	{	311	{
156	SV *rv = &PL_sv_undef;	312	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	313	{
160	char *buf = req->data2ptr;	314	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		315
163	while (req->result)	316	if (req->result >= 0)
164	{	317	{
		318	char *buf = req->data2ptr;
		319	AV *av = newAV ();
		320
		321	while (req->result)
		322	{
165	SV *sv = newSVpv (buf, 0);	323	SV *sv = newSVpv (buf, 0);
166		324
167	av_push (av, sv);	325	av_push (av, sv);
168	buf += SvCUR (sv) + 1;	326	buf += SvCUR (sv) + 1;
169	req->result--;	327	req->result--;
		328	}
		329
		330	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	331	}
171		332
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	333	PUSHs (rv);
173	}	334	}
		335	break;
174		336
175	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;
176	}	375	}
177	break;
178		376
179	case REQ_OPEN:
180	{
181	/* convert fd to fh */
182	SV *fh;
183		377
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	378	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
187	SPAGAIN;
188
189	fh = SvREFCNT_inc (POPs);
190
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}
204
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID \| G_EVAL);	379	call_sv (req->callback, G_VOID \| G_EVAL);
208	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	}
209		399
210	if (SvTRUE (ERRSV))	400	if (SvTRUE (ERRSV))
211	{	401	{
212	req_free (req);	402	req_free (req);
213	croak (0);	403	croak (0);
214	}	404	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	405	}
220		406
221	static void req_free (aio_req req)	407	static void req_free (aio_req req)
222	{	408	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	409	if (req->self)
239	{	410	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	411	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	412	SvREFCNT_dec (req->self);
242	}	413	}
243		414
244	if (req->data)
245	SvREFCNT_dec (req->data);	415	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	416	SvREFCNT_dec (req->fh);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	417	SvREFCNT_dec (req->fh2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	418	SvREFCNT_dec (req->callback);
		419	Safefree (req->statdata);
258		420
259	if (req->type == REQ_READDIR && req->result >= 0)	421	if (req->type == REQ_READDIR && req->result >= 0)
260	free (req->data2ptr);	422	free (req->data2ptr);
261		423
262	Safefree (req);	424	Safefree (req);
263	}	425	}
264		426
265	static void req_cancel (aio_req req)	427	static void req_cancel (aio_req req)
266	{	428	{
267	req->cancelled = 1;	429	req->flags \|= FLAG_CANCELLED;
268		430
269	if (req->type == REQ_GROUP)	431	if (req->type == REQ_GROUP)
270	{	432	{
271	aio_req sub;	433	aio_req sub;
272		434
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	435	for (sub = req->grp_first; sub; sub = sub->grp_next)
274	req_cancel (sub);	436	req_cancel (sub);
275	}	437	}
276	}	438	}
277		439
278	static int poll_cb ()	440	static int poll_cb ()
…		…
283	aio_req req;	445	aio_req req;
284		446
285	for (;;)	447	for (;;)
286	{	448	{
287	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
288	req = ress;	450	req = reqq_shift (&res_queue);
289		451
290	if (req)	452	if (req)
291	{	453	{
292	ress = req->next;
293
294	if (!ress)	454	if (!res_queue.size)
295	{	455	{
296	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
297	char buf [32];	457	char buf [32];
298	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
299	;	459	;
300
301	rese = 0;
302	}	460	}
303	}	461	}
304		462
305	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
306		464
307	if (!req)	465	if (!req)
308	break;	466	break;
309		467
310	nreqs--;	468	--nreqs;
311		469
312	if (req->type == REQ_QUIT)	470	if (req->type == REQ_QUIT)
313	started--;	471	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)	472	else if (req->type == REQ_GROUP && req->length)
315	{	473	{
316	req->fd = 1; /* mark request as delayed */	474	req->fd = 1; /* mark request as delayed */
317	continue;	475	continue;
318	}	476	}
319	else	477	else
…		…
366	static void req_send (aio_req req)	524	static void req_send (aio_req req)
367	{	525	{
368	while (started < wanted && nreqs >= started)	526	while (started < wanted && nreqs >= started)
369	start_thread ();	527	start_thread ();
370		528
371	nreqs++;	529	++nreqs;
372		530
373	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
374		532	reqq_push (&req_queue, req);
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);	533	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
387		535
388	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
389	for (;;)	537	for (;;)
…		…
398	}	546	}
399		547
400	static void end_thread (void)	548	static void end_thread (void)
401	{	549	{
402	aio_req req;	550	aio_req req;
		551
403	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
404	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
405		556
406	req_send (req);	557	req_send (req);
407	}	558	}
408		559
409	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
…		…
496	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	648	# define readahead aio_readahead
498		649
499	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)
500	{	651	{
501	char readahead_buf[4096];	652	dBUF;
502		653
503	while (count > 0)	654	while (count > 0)
504	{	655	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
506		657
507	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
508	offset += len;	659	offset += len;
509	count -= len;	660	count -= len;
510	}	661	}
		662
		663	fBUF;
511		664
512	errno = 0;	665	errno = 0;
513	}	666	}
514	#endif	667	#endif
515		668
…		…
601	#endif	754	#endif
602	)	755	)
603	)	756	)
604	{	757	{
605	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	759	dBUF;
		760
607	res = 0;	761	res = 0;
608		762
609	while (count)	763	while (count)
610	{	764	{
611	ssize_t cnt;	765	ssize_t cnt;
612		766
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		768
615	if (cnt <= 0)	769	if (cnt <= 0)
616	{	770	{
617	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
618	break;	772	break;
619	}	773	}
620		774
621	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
622		776
623	if (cnt <= 0)	777	if (cnt <= 0)
624	{	778	{
625	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
626	break;	780	break;
…		…
628		782
629	offset += cnt;	783	offset += cnt;
630	res += cnt;	784	res += cnt;
631	count -= cnt;	785	count -= cnt;
632	}	786	}
		787
		788	fBUF;
633	}	789	}
634		790
635	return res;	791	return res;
636	}	792	}
637		793
638	/* read a full directory */	794	/* read a full directory */
639	static int scandir_ (const char path, void *namesp)	795	static int scandir_ (const char path, void *namesp)
640	{	796	{
641	DIR *dirp = opendir (path);	797	DIR *dirp;
642	union	798	union
643	{	799	{
644	struct dirent d;	800	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;	802	} *u;
647	struct dirent *entp;	803	struct dirent *entp;
648	char name, names;	804	char name, names;
649	int memlen = 4096;	805	int memlen = 4096;
650	int memofs = 0;	806	int memofs = 0;
651	int res = 0;	807	int res = 0;
652	int errorno;	808	int errorno;
653		809
		810	dirp = opendir (path);
654	if (!dirp)	811	if (!dirp)
655	return -1;	812	return -1;
656		813
		814	u = malloc (sizeof (*u));
657	names = malloc (memlen);	815	names = malloc (memlen);
658		816
		817	if (u && names)
659	for (;;)	818	for (;;)
660	{	819	{
		820	errno = 0;
661	errno = 0, readdir_r (dirp, &u.d, &entp);	821	readdir_r (dirp, &u->d, &entp);
662		822
663	if (!entp)	823	if (!entp)
664	break;	824	break;
665		825
666	name = entp->d_name;	826	name = entp->d_name;
667		827
668	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	828	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
669	{	829	{
670	int len = strlen (name) + 1;	830	int len = strlen (name) + 1;
671		831
672	res++;	832	res++;
673		833
674	while (memofs + len > memlen)	834	while (memofs + len > memlen)
675	{	835	{
676	memlen *= 2;	836	memlen *= 2;
677	names = realloc (names, memlen);	837	names = realloc (names, memlen);
678	if (!names)	838	if (!names)
679	break;	839	break;
680	}	840	}
681		841
682	memcpy (names + memofs, name, len);	842	memcpy (names + memofs, name, len);
683	memofs += len;	843	memofs += len;
684	}	844	}
685	}	845	}
686		846
687	errorno = errno;	847	errorno = errno;
		848	free (u);
688	closedir (dirp);	849	closedir (dirp);
689		850
690	if (errorno)	851	if (errorno)
691	{	852	{
692	free (names);	853	free (names);
…		…
709	{	870	{
710	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
711		872
712	for (;;)	873	for (;;)
713	{	874	{
714	req = reqs;	875	req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		876
722	if (req)	877	if (req)
723	break;	878	break;
724		879
725	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
726	}	881	}
727		882
728	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
729		884
730	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
		886	type = req->type; /* remember type for QUIT check */
731		887
732	if (!req->cancelled)	888	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	889	switch (type)
734	{	890	{
735	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;
736	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;
737		893
738	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;
…		…
752		908
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
756		912
757	case REQ_SLEEP:	913	case REQ_BUSY:
758	{	914	{
759	struct timeval tv;	915	struct timeval tv;
760		916
761	tv.tv_sec = req->fd;	917	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;	918	tv.tv_usec = req->fd2;
763		919
764	req->result = select (0, 0, 0, 0, &tv);	920	req->result = select (0, 0, 0, 0, &tv);
765	}	921	}
766		922
		923	case REQ_GROUP:
		924	case REQ_NOP:
767	case REQ_QUIT:	925	case REQ_QUIT:
768	break;	926	break;
769		927
770	default:	928	default:
771	req->result = ENOSYS;	929	req->result = ENOSYS;
…		…
774		932
775	req->errorno = errno;	933	req->errorno = errno;
776		934
777	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
778		936
779	req->next = 0;	937	if (!reqq_push (&res_queue, req))
780
781	if (rese)
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */	938	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
792	}
793		940
794	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
795	}	942	}
796	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
797		944
…		…
828	{	975	{
829	aio_req prv;	976	aio_req prv;
830		977
831	started = 0;	978	started = 0;
832		979
833	while (reqs)	980	while (prv = reqq_shift (&req_queue))
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);	981	req_free (prv);
838	}
839		982
840	reqs = reqe = 0;	983	while (prv = reqq_shift (&res_queue))
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);	984	req_free (prv);
847	}	985
848
849	ress = rese = 0;
850
851	close (respipe [0]);	986	close (respipe [0]);
852	close (respipe [1]);	987	close (respipe [1]);
853	create_pipe ();	988	create_pipe ();
854		989
855	atfork_parent ();	990	atfork_parent ();
856	}	991	}
857		992
858	#define dREQ \	993	#define dREQ \
859	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	997	\
861	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
863	\	1000	\
864	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1002	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
867	\	1004	\
868	req->callback = newSVsv (callback)	1005	req->callback = newSVsv (callback); \
		1006	req->pri = req_pri
869		1007
870	#define REQ_SEND \	1008	#define REQ_SEND \
871	req_send (req); \	1009	req_send (req); \
872	\	1010	\
873	if (GIMME_V != G_VOID) \	1011	if (GIMME_V != G_VOID) \
…		…
1127		1265
1128	REQ_SEND;	1266	REQ_SEND;
1129	}	1267	}
1130		1268
1131	void	1269	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1270	aio_busy (delay,callback=&PL_sv_undef)
1133	double delay	1271	double delay
1134	SV * callback	1272	SV * callback
1135	PPCODE:	1273	PPCODE:
1136	{	1274	{
1137	dREQ;	1275	dREQ;
1138		1276
1139	req->type = REQ_SLEEP;	1277	req->type = REQ_BUSY;
1140	req->fd = delay < 0. ? 0 : delay;	1278	req->fd = delay < 0. ? 0 : delay;
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1142		1280
1143	REQ_SEND;	1281	REQ_SEND;
1144	}	1282	}
…		…
1148	SV * callback	1286	SV * callback
1149	PROTOTYPE: ;$	1287	PROTOTYPE: ;$
1150	PPCODE:	1288	PPCODE:
1151	{	1289	{
1152	dREQ;	1290	dREQ;
		1291
1153	req->type = REQ_GROUP;	1292	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156
1157	req_send (req);	1293	req_send (req);
		1294
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	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;
1160		1324
1161	void	1325	void
1162	flush ()	1326	flush ()
1163	PROTOTYPE:	1327	PROTOTYPE:
1164	CODE:	1328	CODE:
…		…
1207	CODE:	1371	CODE:
1208	RETVAL = nreqs;	1372	RETVAL = nreqs;
1209	OUTPUT:	1373	OUTPUT:
1210	RETVAL	1374	RETVAL
1211		1375
		1376	PROTOTYPES: DISABLE
		1377
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1379
1214	void	1380	void
1215	cancel (aio_req_ornot req)	1381	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1382	CODE:
1218	req_cancel (req);	1383	req_cancel (req);
1219		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
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1392
1222	void	1393	void
1223	add (aio_req grp, ...)	1394	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1395	PPCODE:
1226	{	1396	{
1227	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");
1228		1402
1229	for (i = 1; i < items; ++i )	1403	for (i = 1; i < items; ++i )
1230	{	1404	{
1231	if (GIMME_V != G_VOID)	1405	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1407
1234	aio_req req = SvAIO_REQ (ST (i));	1408	req = SvAIO_REQ (ST (i));
1235		1409
1236	if (req)	1410	if (req)
1237	{	1411	{
1238	req->grp_prev = grp;	1412	++grp->length;
1239	req->grp_next = grp->grp_next;
1240	grp->grp_next->grp_prev = req;
1241	grp->grp_next = req;
1242
1243	req->grp = grp;	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;
1244	}	1422	}
1245	}	1423	}
1246	}	1424	}
1247		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 1.47 by root, Sun Oct 22 10:10:23 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 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC