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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.67 by root, Tue Oct 24 03:17:39 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"
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
12	#include <stddef.h>	17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
13	#include <sys/types.h>	21	#include <sys/types.h>
14	#include <sys/stat.h>	22	#include <sys/stat.h>
15	#include <limits.h>	23	#include <limits.h>
16	#include <unistd.h>	24	#include <unistd.h>
17	#include <fcntl.h>	25	#include <fcntl.h>
…		…
31	# else	39	# else
32	# error sendfile support requested but not available	40	# error sendfile support requested but not available
33	# endif	41	# endif
34	#endif	42	#endif
35		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
		47	#endif
		48
36	#if __ia64	49	#if __ia64
37	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
38	#else	53	#else
39	# define STACKSIZE 8192	54	# define STACKSIZE 16384
40	#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)
41		66
42	enum {	67	enum {
43	REQ_QUIT,	68	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,	71	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
50	REQ_READDIR,	75	REQ_READDIR,
51	REQ_SYMLINK,	76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
52	};	79	};
53		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
54	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
55	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
56		87
57	int type;	88	SV data, callback;
58		89	SV fh, fh2;
59	/* should receive a cleanup, with unions */	90	void dataptr, data2ptr;
60	int fd, fd2;	91	Stat_t *statdata;
61	off_t offset;	92	off_t offset;
62	size_t length;	93	size_t length;
63	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
64	mode_t mode; /* open */	100	mode_t mode; /* open */
65	int errorno;
66	SV data, callback;
67	SV fh, fh2;
68	void dataptr, data2ptr;
69	STRLEN dataoffset;
70		101
71	Stat_t *statdata;	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;
72	} aio_cb;	107	} aio_cb;
73		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
74	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		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;
75		126
76	static int started, wanted;	127	static int started, wanted;
77	static volatile int nreqs;	128	static volatile int nreqs;
78	static int max_outstanding = 1<<30;	129	static int max_outstanding = 1<<30;
79	static int respipe [2];	130	static int respipe [2];
80		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
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		141
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	142	/*
86	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;
87		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);
		197	static void req_free (aio_req req);
		198
		199	/* must be called at most once */
		200	static SV req_sv (aio_req req, const char klass)
		201	{
		202	if (!req->self)
		203	{
		204	req->self = (SV *)newHV ();
		205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		206	}
		207
		208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		209	}
		210
		211	static aio_req SvAIO_REQ (SV *sv)
		212	{
		213	MAGIC *mg;
		214
		215	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		216	croak ("object of class " AIO_REQ_KLASS " expected");
		217
		218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		219
		220	return mg ? (aio_req)mg->mg_ptr : 0;
		221	}
		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
		269	static void poll_wait ()
		270	{
		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
		287	FD_ZERO(&rfd);
		288	FD_SET(respipe [0], &rfd);
		289
		290	select (respipe [0] + 1, &rfd, 0, 0, 0);
		291	}
		292	}
		293
		294	static void req_invoke (aio_req req)
		295	{
		296	dSP;
		297
		298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		299	{
		300	errno = req->errorno;
		301
		302	ENTER;
		303	SAVETMPS;
		304	PUSHMARK (SP);
		305	EXTEND (SP, 1);
		306
		307	switch (req->type)
		308	{
		309	case REQ_READDIR:
		310	{
		311	SV *rv = &PL_sv_undef;
		312
		313	if (req->result >= 0)
		314	{
		315	char *buf = req->data2ptr;
		316	AV *av = newAV ();
		317
		318	while (req->result)
		319	{
		320	SV *sv = newSVpv (buf, 0);
		321
		322	av_push (av, sv);
		323	buf += SvCUR (sv) + 1;
		324	req->result--;
		325	}
		326
		327	rv = sv_2mortal (newRV_noinc ((SV *)av));
		328	}
		329
		330	PUSHs (rv);
		331	}
		332	break;
		333
		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_SLEEP:
		367	break;
		368
		369	default:
		370	PUSHs (sv_2mortal (newSViv (req->result)));
		371	break;
		372	}
		373
		374
		375	PUTBACK;
		376	call_sv (req->callback, G_VOID \| G_EVAL);
		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	}
		396
		397	if (SvTRUE (ERRSV))
		398	{
		399	req_free (req);
		400	croak (0);
		401	}
		402	}
		403
88	static void free_req (aio_req req)	404	static void req_free (aio_req req)
89	{	405	{
90	if (req->data)	406	if (req->self)
		407	{
		408	sv_unmagic (req->self, PERL_MAGIC_ext);
		409	SvREFCNT_dec (req->self);
		410	}
		411
91	SvREFCNT_dec (req->data);	412	SvREFCNT_dec (req->data);
92
93	if (req->fh)
94	SvREFCNT_dec (req->fh);	413	SvREFCNT_dec (req->fh);
95
96	if (req->fh2)
97	SvREFCNT_dec (req->fh2);	414	SvREFCNT_dec (req->fh2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);	415	SvREFCNT_dec (req->callback);
		416	Safefree (req->statdata);
104		417
105	if (req->type == REQ_READDIR && req->result >= 0)	418	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);	419	free (req->data2ptr);
107		420
108	Safefree (req);	421	Safefree (req);
109	}	422	}
110		423
111	static void	424	static void req_cancel (aio_req req)
112	poll_wait ()
113	{	425	{
114	if (nreqs && !ress)	426	req->flags \|= FLAG_CANCELLED;
115	{
116	fd_set rfd;
117	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);
119		427
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	428	if (req->type == REQ_GROUP)
121	}	429	{
122	}	430	aio_req sub;
123		431
124	static int	432	for (sub = req->grp_first; sub; sub = sub->grp_next)
125	poll_cb ()	433	req_cancel (sub);
		434	}
		435	}
		436
		437	static int poll_cb ()
126	{	438	{
127	dSP;	439	dSP;
128	int count = 0;	440	int count = 0;
129	int do_croak = 0;	441	int do_croak = 0;
130	aio_req req;	442	aio_req req;
131		443
132	for (;;)	444	for (;;)
133	{	445	{
134	pthread_mutex_lock (&reslock);	446	pthread_mutex_lock (&reslock);
135	req = ress;	447	req = reqq_shift (&res_queue);
136		448
137	if (req)	449	if (req)
138	{	450	{
139	ress = req->next;
140
141	if (!ress)	451	if (!res_queue.size)
142	{	452	{
143	/* read any signals sent by the worker threads */	453	/* read any signals sent by the worker threads */
144	char buf [32];	454	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	455	while (read (respipe [0], buf, 32) == 32)
146	;	456	;
147
148	rese = 0;
149	}	457	}
150	}	458	}
151		459
152	pthread_mutex_unlock (&reslock);	460	pthread_mutex_unlock (&reslock);
153		461
154	if (!req)	462	if (!req)
155	break;	463	break;
156		464
157	nreqs--;	465	--nreqs;
158		466
159	if (req->type == REQ_QUIT)	467	if (req->type == REQ_QUIT)
160	started--;	468	started--;
		469	else if (req->type == REQ_GROUP && req->length)
		470	{
		471	req->fd = 1; /* mark request as delayed */
		472	continue;
		473	}
161	else	474	else
162	{	475	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	476	if (req->type == REQ_READ)
167	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));
168		478
169	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	479	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);	480	SvREADONLY_off (req->data);
…		…
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;	485	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);	486	PL_statcache = *(req->statdata);
177	}	487	}
178		488
179	ENTER;	489	req_invoke (req);
180	PUSHMARK (SP);
181		490
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID \| G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);
235	}
236	}
237
238	LEAVE;
239
240	errno = errorno;
241	count++;	491	count++;
242	}	492	}
243		493
244	free_req (req);	494	req_free (req);
245	}	495	}
246		496
247	return count;	497	return count;
248	}	498	}
249		499
250	static void aio_proc(void arg);	500	static void aio_proc(void arg);
251		501
252	static void
253	start_thread (void)	502	static void start_thread (void)
254	{	503	{
255	sigset_t fullsigset, oldsigset;	504	sigset_t fullsigset, oldsigset;
256	pthread_t tid;	505	pthread_t tid;
257	pthread_attr_t attr;	506	pthread_attr_t attr;
258		507
…		…
267	started++;	516	started++;
268		517
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}	519	}
271		520
272	static void	521	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	522	{
275	while (started < wanted && nreqs >= started)	523	while (started < wanted && nreqs >= started)
276	start_thread ();	524	start_thread ();
277		525
278	nreqs++;	526	++nreqs;
279		527
280	pthread_mutex_lock (&reqlock);	528	pthread_mutex_lock (&reqlock);
281		529	reqq_push (&req_queue, req);
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);	530	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	531	pthread_mutex_unlock (&reqlock);
294		532
295	if (nreqs > max_outstanding)	533	if (nreqs > max_outstanding)
296	for (;;)	534	for (;;)
…		…
302		540
303	poll_wait ();	541	poll_wait ();
304	}	542	}
305	}	543	}
306		544
307	static void	545	static void end_thread (void)
308	end_thread (void)
309	{	546	{
310	aio_req req;	547	aio_req req;
		548
311	Newz (0, req, 1, aio_cb);	549	Newz (0, req, 1, aio_cb);
		550
312	req->type = REQ_QUIT;	551	req->type = REQ_QUIT;
		552	req->pri = PRI_MAX + PRI_BIAS;
313		553
314	send_req (req);	554	req_send (req);
315	}	555	}
316		556
317	static void min_parallel (int nthreads)	557	static void min_parallel (int nthreads)
318	{	558	{
319	if (wanted < nthreads)	559	if (wanted < nthreads)
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	604	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	605	* but that's your problem, not mine.
366	*/	606	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		608
369	static ssize_t	609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{	610	{
372	ssize_t res;	611	ssize_t res;
373	off_t ooffset;	612	off_t ooffset;
374		613
375	pthread_mutex_lock (&preadwritelock);	614	pthread_mutex_lock (&preadwritelock);
…		…
380	pthread_mutex_unlock (&preadwritelock);	619	pthread_mutex_unlock (&preadwritelock);
381		620
382	return res;	621	return res;
383	}	622	}
384		623
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	625	{
388	ssize_t res;	626	ssize_t res;
389	off_t ooffset;	627	off_t ooffset;
390		628
391	pthread_mutex_lock (&preadwritelock);	629	pthread_mutex_lock (&preadwritelock);
…		…
404	#endif	642	#endif
405		643
406	#if !HAVE_READAHEAD	644	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	645	# define readahead aio_readahead
408		646
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)	647	static ssize_t readahead (int fd, off_t offset, size_t count)
411	{	648	{
412	char readahead_buf[4096];	649	dBUF;
413		650
414	while (count > 0)	651	while (count > 0)
415	{	652	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		654
418	pread (fd, readahead_buf, len, offset);	655	pread (fd, aio_buf, len, offset);
419	offset += len;	656	offset += len;
420	count -= len;	657	count -= len;
421	}	658	}
422		659
		660	fBUF;
		661
423	errno = 0;	662	errno = 0;
424	}	663	}
425	#endif	664	#endif
426		665
427	#if !HAVE_READDIR_R	666	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	667	# define readdir_r aio_readdir_r
429		668
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		670
432	static int
433	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	671	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
434	{	672	{
435	struct dirent *e;	673	struct dirent *e;
436	int errorno;	674	int errorno;
437		675
438	pthread_mutex_lock (&readdirlock);	676	pthread_mutex_lock (&readdirlock);
…		…
454	return e ? 0 : -1;	692	return e ? 0 : -1;
455	}	693	}
456	#endif	694	#endif
457		695
458	/* sendfile always needs emulation */	696	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461	{	698	{
462	ssize_t res;	699	ssize_t res;
463		700
464	if (!count)	701	if (!count)
465	return 0;	702	return 0;
…		…
499		736
500	if (res < 0 && sbytes)	737	if (res < 0 && sbytes)
501	res = sbytes;	738	res = sbytes;
502	}	739	}
503		740
		741	# endif
504	# else	742	#else
505	res = -1;	743	res = -1;
506	errno = ENOSYS;	744	errno = ENOSYS;
507	# endif
508	#endif	745	#endif
509		746
510	if (res < 0	747	if (res < 0
511	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	748	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
512	#if __solaris	749	#if __solaris
…		…
514	#endif	751	#endif
515	)	752	)
516	)	753	)
517	{	754	{
518	/* emulate sendfile. this is a major pain in the ass */	755	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	756	dBUF;
		757
520	res = 0;	758	res = 0;
521		759
522	for (;;)	760	while (count)
523	{	761	{
524	ssize_t cnt;	762	ssize_t cnt;
525		763
526	cnt = pread (ifd, buf, 4096, offset);	764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		765
528	if (cnt <= 0)	766	if (cnt <= 0)
529	{	767	{
530	if (cnt && !res) res = -1;	768	if (cnt && !res) res = -1;
531	break;	769	break;
532	}	770	}
533		771
534	cnt = write (ofd, buf, cnt);	772	cnt = write (ofd, aio_buf, cnt);
535		773
536	if (cnt <= 0)	774	if (cnt <= 0)
537	{	775	{
538	if (cnt && !res) res = -1;	776	if (cnt && !res) res = -1;
539	break;	777	break;
540	}	778	}
541		779
542	offset += cnt;	780	offset += cnt;
543	res += cnt;	781	res += cnt;
		782	count -= cnt;
544	}	783	}
		784
		785	fBUF;
545	}	786	}
546		787
547	return res;	788	return res;
548	}	789	}
549		790
550	/* read a full directory */	791	/* read a full directory */
551	static int
552	scandir_ (const char path, void *namesp)	792	static int scandir_ (const char path, void *namesp)
553	{	793	{
554	DIR *dirp = opendir (path);	794	DIR *dirp;
555	union	795	union
556	{	796	{
557	struct dirent d;	797	struct dirent d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559	} u;	799	} *u;
560	struct dirent *entp;	800	struct dirent *entp;
561	char name, names;	801	char name, names;
562	int memlen = 4096;	802	int memlen = 4096;
563	int memofs = 0;	803	int memofs = 0;
564	int res = 0;	804	int res = 0;
565	int errorno;	805	int errorno;
566		806
		807	dirp = opendir (path);
567	if (!dirp)	808	if (!dirp)
568	return -1;	809	return -1;
569		810
		811	u = malloc (sizeof (*u));
570	names = malloc (memlen);	812	names = malloc (memlen);
571		813
		814	if (u && names)
572	for (;;)	815	for (;;)
573	{	816	{
		817	errno = 0;
574	errno = 0, readdir_r (dirp, &u.d, &entp);	818	readdir_r (dirp, &u->d, &entp);
575		819
576	if (!entp)	820	if (!entp)
577	break;	821	break;
578		822
579	name = entp->d_name;	823	name = entp->d_name;
580		824
581	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	825	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
582	{	826	{
583	int len = strlen (name) + 1;	827	int len = strlen (name) + 1;
584		828
585	res++;	829	res++;
586		830
587	while (memofs + len > memlen)	831	while (memofs + len > memlen)
588	{	832	{
589	memlen *= 2;	833	memlen *= 2;
590	names = realloc (names, memlen);	834	names = realloc (names, memlen);
591	if (!names)	835	if (!names)
592	break;	836	break;
593	}	837	}
594		838
595	memcpy (names + memofs, name, len);	839	memcpy (names + memofs, name, len);
596	memofs += len;	840	memofs += len;
597	}	841	}
598	}	842	}
599		843
600	errorno = errno;	844	errorno = errno;
		845	free (u);
601	closedir (dirp);	846	closedir (dirp);
602		847
603	if (errorno)	848	if (errorno)
604	{	849	{
605	free (names);	850	free (names);
…		…
611	return res;	856	return res;
612	}	857	}
613		858
614	/*****************************************************************************/	859	/*****************************************************************************/
615		860
616	static void *
617	aio_proc (void *thr_arg)	861	static void aio_proc (void thr_arg)
618	{	862	{
619	aio_req req;	863	aio_req req;
620	int type;	864	int type;
621		865
622	do	866	do
623	{	867	{
624	pthread_mutex_lock (&reqlock);	868	pthread_mutex_lock (&reqlock);
625		869
626	for (;;)	870	for (;;)
627	{	871	{
628	req = reqs;	872	req = reqq_shift (&req_queue);
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635		873
636	if (req)	874	if (req)
637	break;	875	break;
638		876
639	pthread_cond_wait (&reqwait, &reqlock);	877	pthread_cond_wait (&reqwait, &reqlock);
640	}	878	}
641		879
642	pthread_mutex_unlock (&reqlock);	880	pthread_mutex_unlock (&reqlock);
643		881
644	errno = 0; /* strictly unnecessary */	882	errno = 0; /* strictly unnecessary */
		883	type = req->type; /* remember type for QUIT check */
645		884
646	type = req->type;	885	if (!(req->flags & FLAG_CANCELLED))
647
648	switch (type)	886	switch (type)
649	{	887	{
650	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;
651	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;
652		890
653	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;
654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
655		893
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659		897
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;	899	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665		905
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;	907	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
669		909
		910	case REQ_SLEEP:
		911	{
		912	struct timeval tv;
		913
		914	tv.tv_sec = req->fd;
		915	tv.tv_usec = req->fd2;
		916
		917	req->result = select (0, 0, 0, 0, &tv);
		918	}
		919
		920	case REQ_GROUP:
		921	case REQ_NOP:
670	case REQ_QUIT:	922	case REQ_QUIT:
671	break;	923	break;
672		924
673	default:	925	default:
674	req->result = ENOSYS;	926	req->result = ENOSYS;
675	break;	927	break;
676	}	928	}
677		929
678	req->errorno = errno;	930	req->errorno = errno;
679		931
680	pthread_mutex_lock (&reslock);	932	pthread_mutex_lock (&reslock);
681		933
682	req->next = 0;	934	if (!reqq_push (&res_queue, req))
683
684	if (rese)
685	{
686	rese->next = req;
687	rese = req;
688	}
689	else
690	{
691	rese = ress = req;
692
693	/* write a dummy byte to the pipe so fh becomes ready */	935	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);	936	write (respipe [1], &respipe, 1);
695	}
696		937
697	pthread_mutex_unlock (&reslock);	938	pthread_mutex_unlock (&reslock);
698	}	939	}
699	while (type != REQ_QUIT);	940	while (type != REQ_QUIT);
700		941
…		…
731	{	972	{
732	aio_req prv;	973	aio_req prv;
733		974
734	started = 0;	975	started = 0;
735		976
736	while (reqs)	977	while (prv = reqq_shift (&req_queue))
737	{
738	prv = reqs;
739	reqs = prv->next;
740	free_req (prv);	978	req_free (prv);
741	}
742		979
743	reqs = reqe = 0;	980	while (prv = reqq_shift (&res_queue))
744
745	while (ress)
746	{
747	prv = ress;
748	ress = prv->next;
749	free_req (prv);	981	req_free (prv);
750	}	982
751
752	ress = rese = 0;
753
754	close (respipe [0]);	983	close (respipe [0]);
755	close (respipe [1]);	984	close (respipe [1]);
756	create_pipe ();	985	create_pipe ();
757		986
758	atfork_parent ();	987	atfork_parent ();
759	}	988	}
760		989
761	#define dREQ \	990	#define dREQ \
762	aio_req req; \	991	aio_req req; \
		992	int req_pri = next_pri; \
		993	next_pri = DEFAULT_PRI + PRI_BIAS; \
763	\	994	\
764	if (SvOK (callback) && !SvROK (callback)) \	995	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \	996	croak ("callback must be undef or of reference type"); \
766	\	997	\
767	Newz (0, req, 1, aio_cb); \	998	Newz (0, req, 1, aio_cb); \
768	if (!req) \	999	if (!req) \
769	croak ("out of memory during aio_req allocation"); \	1000	croak ("out of memory during aio_req allocation"); \
770	\	1001	\
771	req->callback = newSVsv (callback);	1002	req->callback = newSVsv (callback); \
		1003	req->pri = req_pri
		1004
		1005	#define REQ_SEND \
		1006	req_send (req); \
		1007	\
		1008	if (GIMME_V != G_VOID) \
		1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));
772		1010
773	MODULE = IO::AIO PACKAGE = IO::AIO	1011	MODULE = IO::AIO PACKAGE = IO::AIO
774		1012
775	PROTOTYPES: ENABLE	1013	PROTOTYPES: ENABLE
776		1014
777	BOOT:	1015	BOOT:
778	{	1016	{
		1017	HV *stash = gv_stashpv ("IO::AIO", 1);
		1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1021
779	create_pipe ();	1022	create_pipe ();
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
781	}	1024	}
782		1025
783	void	1026	void
784	min_parallel(nthreads)	1027	min_parallel (nthreads)
785	int nthreads	1028	int nthreads
786	PROTOTYPE: $	1029	PROTOTYPE: $
787		1030
788	void	1031	void
789	max_parallel(nthreads)	1032	max_parallel (nthreads)
790	int nthreads	1033	int nthreads
791	PROTOTYPE: $	1034	PROTOTYPE: $
792		1035
793	int	1036	int
794	max_outstanding(nreqs)	1037	max_outstanding (nreqs)
795	int nreqs	1038	int nreqs
796	PROTOTYPE: $	1039	PROTOTYPE: $
797	CODE:	1040	CODE:
798	RETVAL = max_outstanding;	1041	RETVAL = max_outstanding;
799	max_outstanding = nreqs;	1042	max_outstanding = nreqs;
800		1043
801	void	1044	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
803	SV * pathname	1046	SV * pathname
804	int flags	1047	int flags
805	int mode	1048	int mode
806	SV * callback	1049	SV * callback
807	PROTOTYPE: $$$;$	1050	PROTOTYPE: $$$;$
808	CODE:	1051	PPCODE:
809	{	1052	{
810	dREQ;	1053	dREQ;
811		1054
812	req->type = REQ_OPEN;	1055	req->type = REQ_OPEN;
813	req->data = newSVsv (pathname);	1056	req->data = newSVsv (pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);	1057	req->dataptr = SvPVbyte_nolen (req->data);
815	req->fd = flags;	1058	req->fd = flags;
816	req->mode = mode;	1059	req->mode = mode;
817		1060
818	send_req (req);	1061	REQ_SEND;
819	}	1062	}
820		1063
821	void	1064	void
822	aio_close(fh,callback=&PL_sv_undef)	1065	aio_close (fh,callback=&PL_sv_undef)
823	SV * fh	1066	SV * fh
824	SV * callback	1067	SV * callback
825	PROTOTYPE: $;$	1068	PROTOTYPE: $;$
826	ALIAS:	1069	ALIAS:
827	aio_close = REQ_CLOSE	1070	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	1071	aio_fsync = REQ_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	1072	aio_fdatasync = REQ_FDATASYNC
830	CODE:	1073	PPCODE:
831	{	1074	{
832	dREQ;	1075	dREQ;
833		1076
834	req->type = ix;	1077	req->type = ix;
835	req->fh = newSVsv (fh);	1078	req->fh = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
837		1080
838	send_req (req);	1081	REQ_SEND (req);
839	}	1082	}
840		1083
841	void	1084	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
843	SV * fh	1086	SV * fh
844	UV offset	1087	UV offset
845	UV length	1088	UV length
846	SV * data	1089	SV * data
847	UV dataoffset	1090	UV dataoffset
848	SV * callback	1091	SV * callback
849	ALIAS:	1092	ALIAS:
850	aio_read = REQ_READ	1093	aio_read = REQ_READ
851	aio_write = REQ_WRITE	1094	aio_write = REQ_WRITE
852	PROTOTYPE: $$$$$;$	1095	PROTOTYPE: $$$$$;$
853	CODE:	1096	PPCODE:
854	{	1097	{
855	aio_req req;	1098	aio_req req;
856	STRLEN svlen;	1099	STRLEN svlen;
857	char *svptr = SvPVbyte (data, svlen);	1100	char *svptr = SvPVbyte (data, svlen);
858		1101
…		…
896	{	1139	{
897	SvREADONLY_on (data);	1140	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	1141	req->data2ptr = (void *)data;
899	}	1142	}
900		1143
901	send_req (req);	1144	REQ_SEND;
902	}	1145	}
903	}	1146	}
904		1147
905	void	1148	void
906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
907	SV * out_fh	1150	SV * out_fh
908	SV * in_fh	1151	SV * in_fh
909	UV in_offset	1152	UV in_offset
910	UV length	1153	UV length
911	SV * callback	1154	SV * callback
912	PROTOTYPE: $$$$;$	1155	PROTOTYPE: $$$$;$
913	CODE:	1156	PPCODE:
914	{	1157	{
915	dREQ;	1158	dREQ;
916		1159
917	req->type = REQ_SENDFILE;	1160	req->type = REQ_SENDFILE;
918	req->fh = newSVsv (out_fh);	1161	req->fh = newSVsv (out_fh);
…		…
920	req->fh2 = newSVsv (in_fh);	1163	req->fh2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
922	req->offset = in_offset;	1165	req->offset = in_offset;
923	req->length = length;	1166	req->length = length;
924		1167
925	send_req (req);	1168	REQ_SEND;
926	}	1169	}
927		1170
928	void	1171	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
930	SV * fh	1173	SV * fh
931	UV offset	1174	UV offset
932	IV length	1175	IV length
933	SV * callback	1176	SV * callback
934	PROTOTYPE: $$$;$	1177	PROTOTYPE: $$$;$
935	CODE:	1178	PPCODE:
936	{	1179	{
937	dREQ;	1180	dREQ;
938		1181
939	req->type = REQ_READAHEAD;	1182	req->type = REQ_READAHEAD;
940	req->fh = newSVsv (fh);	1183	req->fh = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
942	req->offset = offset;	1185	req->offset = offset;
943	req->length = length;	1186	req->length = length;
944		1187
945	send_req (req);	1188	REQ_SEND;
946	}	1189	}
947		1190
948	void	1191	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	1192	aio_stat (fh_or_path,callback=&PL_sv_undef)
950	SV * fh_or_path	1193	SV * fh_or_path
951	SV * callback	1194	SV * callback
952	ALIAS:	1195	ALIAS:
953	aio_stat = REQ_STAT	1196	aio_stat = REQ_STAT
954	aio_lstat = REQ_LSTAT	1197	aio_lstat = REQ_LSTAT
955	CODE:	1198	PPCODE:
956	{	1199	{
957	dREQ;	1200	dREQ;
958		1201
959	New (0, req->statdata, 1, Stat_t);	1202	New (0, req->statdata, 1, Stat_t);
960	if (!req->statdata)	1203	if (!req->statdata)
961	{	1204	{
962	free_req (req);	1205	req_free (req);
963	croak ("out of memory during aio_req->statdata allocation");	1206	croak ("out of memory during aio_req->statdata allocation");
964	}	1207	}
965		1208
966	if (SvPOK (fh_or_path))	1209	if (SvPOK (fh_or_path))
967	{	1210	{
…		…
974	req->type = REQ_FSTAT;	1217	req->type = REQ_FSTAT;
975	req->fh = newSVsv (fh_or_path);	1218	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977	}	1220	}
978		1221
979	send_req (req);	1222	REQ_SEND;
980	}	1223	}
981		1224
982	void	1225	void
983	aio_unlink(pathname,callback=&PL_sv_undef)	1226	aio_unlink (pathname,callback=&PL_sv_undef)
984	SV * pathname	1227	SV * pathname
985	SV * callback	1228	SV * callback
986	ALIAS:	1229	ALIAS:
987	aio_unlink = REQ_UNLINK	1230	aio_unlink = REQ_UNLINK
988	aio_rmdir = REQ_RMDIR	1231	aio_rmdir = REQ_RMDIR
		1232	aio_readdir = REQ_READDIR
989	CODE:	1233	PPCODE:
990	{	1234	{
991	dREQ;	1235	dREQ;
992		1236
993	req->type = ix;	1237	req->type = ix;
994	req->data = newSVsv (pathname);	1238	req->data = newSVsv (pathname);
995	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->dataptr = SvPVbyte_nolen (req->data);
996		1240
997	send_req (req);	1241	REQ_SEND;
998	}	1242	}
999		1243
1000	void	1244	void
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1002	SV * oldpath	1246	SV * oldpath
1003	SV * newpath	1247	SV * newpath
1004	SV * callback	1248	SV * callback
		1249	ALIAS:
		1250	aio_link = REQ_LINK
		1251	aio_symlink = REQ_SYMLINK
		1252	aio_rename = REQ_RENAME
1005	CODE:	1253	PPCODE:
1006	{	1254	{
1007	dREQ;	1255	dREQ;
1008		1256
1009	req->type = REQ_SYMLINK;	1257	req->type = ix;
1010	req->fh = newSVsv (oldpath);	1258	req->fh = newSVsv (oldpath);
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	1259	req->data2ptr = SvPVbyte_nolen (req->fh);
1012	req->data = newSVsv (newpath);	1260	req->data = newSVsv (newpath);
1013	req->dataptr = SvPVbyte_nolen (req->data);	1261	req->dataptr = SvPVbyte_nolen (req->data);
1014		1262
1015	send_req (req);	1263	REQ_SEND;
1016	}	1264	}
1017		1265
1018	void	1266	void
1019	aio_readdir(pathname,callback=&PL_sv_undef)	1267	aio_sleep (delay,callback=&PL_sv_undef)
1020	SV * pathname	1268	double delay
1021	SV * callback	1269	SV * callback
		1270	PPCODE:
		1271	{
		1272	dREQ;
		1273
		1274	req->type = REQ_SLEEP;
		1275	req->fd = delay < 0. ? 0 : delay;
		1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1277
		1278	REQ_SEND;
		1279	}
		1280
		1281	void
		1282	aio_group (callback=&PL_sv_undef)
		1283	SV * callback
		1284	PROTOTYPE: ;$
		1285	PPCODE:
		1286	{
		1287	dREQ;
		1288
		1289	req->type = REQ_GROUP;
		1290	req_send (req);
		1291
		1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		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)
1022	CODE:	1309	CODE:
1023	{	1310	if (pri < PRI_MIN) pri = PRI_MIN;
1024	dREQ;	1311	if (pri > PRI_MAX) pri = PRI_MAX;
1025		1312	next_pri = pri + PRI_BIAS;
1026	req->type = REQ_READDIR;
1027	req->data = newSVsv (pathname);
1028	req->dataptr = SvPVbyte_nolen (req->data);
1029
1030	send_req (req);
1031	}
1032		1313
1033	void	1314	void
1034	flush()	1315	flush ()
1035	PROTOTYPE:	1316	PROTOTYPE:
1036	CODE:	1317	CODE:
1037	while (nreqs)	1318	while (nreqs)
1038	{	1319	{
1039	poll_wait ();	1320	poll_wait ();
…		…
1079	CODE:	1360	CODE:
1080	RETVAL = nreqs;	1361	RETVAL = nreqs;
1081	OUTPUT:	1362	OUTPUT:
1082	RETVAL	1363	RETVAL
1083		1364
		1365	PROTOTYPES: DISABLE
		1366
		1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1368
		1369	void
		1370	cancel (aio_req_ornot req)
		1371	CODE:
		1372	req_cancel (req);
		1373
		1374	void
		1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1376	CODE:
		1377	SvREFCNT_dec (req->callback);
		1378	req->callback = newSVsv (callback);
		1379
		1380	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1381
		1382	void
		1383	add (aio_req grp, ...)
		1384	PPCODE:
		1385	{
		1386	int i;
		1387	aio_req req;
		1388
		1389	if (grp->fd == 2)
		1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1391
		1392	for (i = 1; i < items; ++i )
		1393	{
		1394	if (GIMME_V != G_VOID)
		1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1396
		1397	req = SvAIO_REQ (ST (i));
		1398
		1399	if (req)
		1400	{
		1401	++grp->length;
		1402	req->grp = grp;
		1403
		1404	req->grp_prev = 0;
		1405	req->grp_next = grp->grp_first;
		1406
		1407	if (grp->grp_first)
		1408	grp->grp_first->grp_prev = req;
		1409
		1410	grp->grp_first = req;
		1411	}
		1412	}
		1413	}
		1414
		1415	void
		1416	result (aio_req grp, ...)
		1417	CODE:
		1418	{
		1419	int i;
		1420	AV *av = newAV ();
		1421
		1422	for (i = 1; i < items; ++i )
		1423	av_push (av, newSVsv (ST (i)));
		1424
		1425	SvREFCNT_dec (grp->data);
		1426	grp->data = (SV *)av;
		1427	}
		1428
		1429	void
		1430	limit (aio_req grp, int limit)
		1431	CODE:
		1432	grp->fd2 = limit;
		1433	aio_grp_feed (grp);
		1434
		1435	void
		1436	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1437	CODE:
		1438	{
		1439	SvREFCNT_dec (grp->fh2);
		1440	grp->fh2 = newSVsv (callback);
		1441
		1442	if (grp->fd2 <= 0)
		1443	grp->fd2 = 2;
		1444
		1445	aio_grp_feed (grp);
		1446	}
		1447

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs. Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC