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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.68 by root, Tue Oct 24 03:40:25 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;
…		…
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	while (count)	760	while (count)
523	{	761	{
524	ssize_t cnt;	762	ssize_t cnt;
525		763
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, 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;
…		…
541		779
542	offset += cnt;	780	offset += cnt;
543	res += cnt;	781	res += cnt;
544	count -= cnt;	782	count -= cnt;
545	}	783	}
		784
		785	fBUF;
546	}	786	}
547		787
548	return res;	788	return res;
549	}	789	}
550		790
551	/* read a full directory */	791	/* read a full directory */
552	static int
553	scandir_ (const char path, void *namesp)	792	static int scandir_ (const char path, void *namesp)
554	{	793	{
555	DIR *dirp = opendir (path);	794	DIR *dirp;
556	union	795	union
557	{	796	{
558	struct dirent d;	797	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;	799	} *u;
561	struct dirent *entp;	800	struct dirent *entp;
562	char name, names;	801	char name, names;
563	int memlen = 4096;	802	int memlen = 4096;
564	int memofs = 0;	803	int memofs = 0;
565	int res = 0;	804	int res = 0;
566	int errorno;	805	int errorno;
567		806
		807	dirp = opendir (path);
568	if (!dirp)	808	if (!dirp)
569	return -1;	809	return -1;
570		810
		811	u = malloc (sizeof (*u));
571	names = malloc (memlen);	812	names = malloc (memlen);
572		813
		814	if (u && names)
573	for (;;)	815	for (;;)
574	{	816	{
		817	errno = 0;
575	errno = 0, readdir_r (dirp, &u.d, &entp);	818	readdir_r (dirp, &u->d, &entp);
576		819
577	if (!entp)	820	if (!entp)
578	break;	821	break;
579		822
580	name = entp->d_name;	823	name = entp->d_name;
581		824
582	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	825	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
583	{	826	{
584	int len = strlen (name) + 1;	827	int len = strlen (name) + 1;
585		828
586	res++;	829	res++;
587		830
588	while (memofs + len > memlen)	831	while (memofs + len > memlen)
589	{	832	{
590	memlen *= 2;	833	memlen *= 2;
591	names = realloc (names, memlen);	834	names = realloc (names, memlen);
592	if (!names)	835	if (!names)
593	break;	836	break;
594	}	837	}
595		838
596	memcpy (names + memofs, name, len);	839	memcpy (names + memofs, name, len);
597	memofs += len;	840	memofs += len;
598	}	841	}
599	}	842	}
600		843
601	errorno = errno;	844	errorno = errno;
		845	free (u);
602	closedir (dirp);	846	closedir (dirp);
603		847
604	if (errorno)	848	if (errorno)
605	{	849	{
606	free (names);	850	free (names);
…		…
612	return res;	856	return res;
613	}	857	}
614		858
615	/*****************************************************************************/	859	/*****************************************************************************/
616		860
617	static void *
618	aio_proc (void *thr_arg)	861	static void aio_proc (void thr_arg)
619	{	862	{
620	aio_req req;	863	aio_req req;
621	int type;	864	int type;
622		865
623	do	866	do
624	{	867	{
625	pthread_mutex_lock (&reqlock);	868	pthread_mutex_lock (&reqlock);
626		869
627	for (;;)	870	for (;;)
628	{	871	{
629	req = reqs;	872	req = reqq_shift (&req_queue);
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636		873
637	if (req)	874	if (req)
638	break;	875	break;
639		876
640	pthread_cond_wait (&reqwait, &reqlock);	877	pthread_cond_wait (&reqwait, &reqlock);
641	}	878	}
642		879
643	pthread_mutex_unlock (&reqlock);	880	pthread_mutex_unlock (&reqlock);
644		881
645	errno = 0; /* strictly unnecessary */	882	errno = 0; /* strictly unnecessary */
		883	type = req->type; /* remember type for QUIT check */
646		884
647	type = req->type;	885	if (!(req->flags & FLAG_CANCELLED))
648
649	switch (type)	886	switch (type)
650	{	887	{
651	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;
652	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;
653		890
654	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;
655	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;
656		893
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660		897
661	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;
662	case REQ_CLOSE: req->result = close (req->fd); break;	899	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	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;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666		905
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;	907	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
670		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:
671	case REQ_QUIT:	922	case REQ_QUIT:
672	break;	923	break;
673		924
674	default:	925	default:
675	req->result = ENOSYS;	926	req->result = ENOSYS;
676	break;	927	break;
677	}	928	}
678		929
679	req->errorno = errno;	930	req->errorno = errno;
680		931
681	pthread_mutex_lock (&reslock);	932	pthread_mutex_lock (&reslock);
682		933
683	req->next = 0;	934	if (!reqq_push (&res_queue, req))
684
685	if (rese)
686	{
687	rese->next = req;
688	rese = req;
689	}
690	else
691	{
692	rese = ress = req;
693
694	/* write a dummy byte to the pipe so fh becomes ready */	935	/* write a dummy byte to the pipe so fh becomes ready */
695	write (respipe [1], &respipe, 1);	936	write (respipe [1], &respipe, 1);
696	}
697		937
698	pthread_mutex_unlock (&reslock);	938	pthread_mutex_unlock (&reslock);
699	}	939	}
700	while (type != REQ_QUIT);	940	while (type != REQ_QUIT);
701		941
…		…
732	{	972	{
733	aio_req prv;	973	aio_req prv;
734		974
735	started = 0;	975	started = 0;
736		976
737	while (reqs)	977	while (prv = reqq_shift (&req_queue))
738	{
739	prv = reqs;
740	reqs = prv->next;
741	free_req (prv);	978	req_free (prv);
742	}
743		979
744	reqs = reqe = 0;	980	while (prv = reqq_shift (&res_queue))
745
746	while (ress)
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);	981	req_free (prv);
751	}	982
752
753	ress = rese = 0;
754
755	close (respipe [0]);	983	close (respipe [0]);
756	close (respipe [1]);	984	close (respipe [1]);
757	create_pipe ();	985	create_pipe ();
758		986
759	atfork_parent ();	987	atfork_parent ();
760	}	988	}
761		989
762	#define dREQ \	990	#define dREQ \
763	aio_req req; \	991	aio_req req; \
		992	int req_pri = next_pri; \
		993	next_pri = DEFAULT_PRI + PRI_BIAS; \
764	\	994	\
765	if (SvOK (callback) && !SvROK (callback)) \	995	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \	996	croak ("callback must be undef or of reference type"); \
767	\	997	\
768	Newz (0, req, 1, aio_cb); \	998	Newz (0, req, 1, aio_cb); \
769	if (!req) \	999	if (!req) \
770	croak ("out of memory during aio_req allocation"); \	1000	croak ("out of memory during aio_req allocation"); \
771	\	1001	\
772	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));
773		1010
774	MODULE = IO::AIO PACKAGE = IO::AIO	1011	MODULE = IO::AIO PACKAGE = IO::AIO
775		1012
776	PROTOTYPES: ENABLE	1013	PROTOTYPES: ENABLE
777		1014
778	BOOT:	1015	BOOT:
779	{	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
780	create_pipe ();	1022	create_pipe ();
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}	1024	}
783		1025
784	void	1026	void
785	min_parallel(nthreads)	1027	min_parallel (nthreads)
786	int nthreads	1028	int nthreads
787	PROTOTYPE: $	1029	PROTOTYPE: $
788		1030
789	void	1031	void
790	max_parallel(nthreads)	1032	max_parallel (nthreads)
791	int nthreads	1033	int nthreads
792	PROTOTYPE: $	1034	PROTOTYPE: $
793		1035
794	int	1036	int
795	max_outstanding(nreqs)	1037	max_outstanding (nreqs)
796	int nreqs	1038	int nreqs
797	PROTOTYPE: $	1039	PROTOTYPE: $
798	CODE:	1040	CODE:
799	RETVAL = max_outstanding;	1041	RETVAL = max_outstanding;
800	max_outstanding = nreqs;	1042	max_outstanding = nreqs;
801		1043
802	void	1044	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
804	SV * pathname	1046	SV * pathname
805	int flags	1047	int flags
806	int mode	1048	int mode
807	SV * callback	1049	SV * callback
808	PROTOTYPE: $$$;$	1050	PROTOTYPE: $$$;$
809	CODE:	1051	PPCODE:
810	{	1052	{
811	dREQ;	1053	dREQ;
812		1054
813	req->type = REQ_OPEN;	1055	req->type = REQ_OPEN;
814	req->data = newSVsv (pathname);	1056	req->data = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	1057	req->dataptr = SvPVbyte_nolen (req->data);
816	req->fd = flags;	1058	req->fd = flags;
817	req->mode = mode;	1059	req->mode = mode;
818		1060
819	send_req (req);	1061	REQ_SEND;
820	}	1062	}
821		1063
822	void	1064	void
823	aio_close(fh,callback=&PL_sv_undef)	1065	aio_close (fh,callback=&PL_sv_undef)
824	SV * fh	1066	SV * fh
825	SV * callback	1067	SV * callback
826	PROTOTYPE: $;$	1068	PROTOTYPE: $;$
827	ALIAS:	1069	ALIAS:
828	aio_close = REQ_CLOSE	1070	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	1071	aio_fsync = REQ_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	1072	aio_fdatasync = REQ_FDATASYNC
831	CODE:	1073	PPCODE:
832	{	1074	{
833	dREQ;	1075	dREQ;
834		1076
835	req->type = ix;	1077	req->type = ix;
836	req->fh = newSVsv (fh);	1078	req->fh = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
838		1080
839	send_req (req);	1081	REQ_SEND (req);
840	}	1082	}
841		1083
842	void	1084	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
844	SV * fh	1086	SV * fh
845	UV offset	1087	UV offset
846	UV length	1088	UV length
847	SV * data	1089	SV * data
848	UV dataoffset	1090	UV dataoffset
849	SV * callback	1091	SV * callback
850	ALIAS:	1092	ALIAS:
851	aio_read = REQ_READ	1093	aio_read = REQ_READ
852	aio_write = REQ_WRITE	1094	aio_write = REQ_WRITE
853	PROTOTYPE: $$$$$;$	1095	PROTOTYPE: $$$$$;$
854	CODE:	1096	PPCODE:
855	{	1097	{
856	aio_req req;	1098	aio_req req;
857	STRLEN svlen;	1099	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	1100	char *svptr = SvPVbyte (data, svlen);
859		1101
…		…
897	{	1139	{
898	SvREADONLY_on (data);	1140	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	1141	req->data2ptr = (void *)data;
900	}	1142	}
901		1143
902	send_req (req);	1144	REQ_SEND;
903	}	1145	}
904	}	1146	}
905		1147
906	void	1148	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
908	SV * out_fh	1150	SV * out_fh
909	SV * in_fh	1151	SV * in_fh
910	UV in_offset	1152	UV in_offset
911	UV length	1153	UV length
912	SV * callback	1154	SV * callback
913	PROTOTYPE: $$$$;$	1155	PROTOTYPE: $$$$;$
914	CODE:	1156	PPCODE:
915	{	1157	{
916	dREQ;	1158	dREQ;
917		1159
918	req->type = REQ_SENDFILE;	1160	req->type = REQ_SENDFILE;
919	req->fh = newSVsv (out_fh);	1161	req->fh = newSVsv (out_fh);
…		…
921	req->fh2 = newSVsv (in_fh);	1163	req->fh2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
923	req->offset = in_offset;	1165	req->offset = in_offset;
924	req->length = length;	1166	req->length = length;
925		1167
926	send_req (req);	1168	REQ_SEND;
927	}	1169	}
928		1170
929	void	1171	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
931	SV * fh	1173	SV * fh
932	UV offset	1174	UV offset
933	IV length	1175	IV length
934	SV * callback	1176	SV * callback
935	PROTOTYPE: $$$;$	1177	PROTOTYPE: $$$;$
936	CODE:	1178	PPCODE:
937	{	1179	{
938	dREQ;	1180	dREQ;
939		1181
940	req->type = REQ_READAHEAD;	1182	req->type = REQ_READAHEAD;
941	req->fh = newSVsv (fh);	1183	req->fh = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
943	req->offset = offset;	1185	req->offset = offset;
944	req->length = length;	1186	req->length = length;
945		1187
946	send_req (req);	1188	REQ_SEND;
947	}	1189	}
948		1190
949	void	1191	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	1192	aio_stat (fh_or_path,callback=&PL_sv_undef)
951	SV * fh_or_path	1193	SV * fh_or_path
952	SV * callback	1194	SV * callback
953	ALIAS:	1195	ALIAS:
954	aio_stat = REQ_STAT	1196	aio_stat = REQ_STAT
955	aio_lstat = REQ_LSTAT	1197	aio_lstat = REQ_LSTAT
956	CODE:	1198	PPCODE:
957	{	1199	{
958	dREQ;	1200	dREQ;
959		1201
960	New (0, req->statdata, 1, Stat_t);	1202	New (0, req->statdata, 1, Stat_t);
961	if (!req->statdata)	1203	if (!req->statdata)
962	{	1204	{
963	free_req (req);	1205	req_free (req);
964	croak ("out of memory during aio_req->statdata allocation");	1206	croak ("out of memory during aio_req->statdata allocation");
965	}	1207	}
966		1208
967	if (SvPOK (fh_or_path))	1209	if (SvPOK (fh_or_path))
968	{	1210	{
…		…
975	req->type = REQ_FSTAT;	1217	req->type = REQ_FSTAT;
976	req->fh = newSVsv (fh_or_path);	1218	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
978	}	1220	}
979		1221
980	send_req (req);	1222	REQ_SEND;
981	}	1223	}
982		1224
983	void	1225	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	1226	aio_unlink (pathname,callback=&PL_sv_undef)
985	SV * pathname	1227	SV * pathname
986	SV * callback	1228	SV * callback
987	ALIAS:	1229	ALIAS:
988	aio_unlink = REQ_UNLINK	1230	aio_unlink = REQ_UNLINK
989	aio_rmdir = REQ_RMDIR	1231	aio_rmdir = REQ_RMDIR
		1232	aio_readdir = REQ_READDIR
990	CODE:	1233	PPCODE:
991	{	1234	{
992	dREQ;	1235	dREQ;
993		1236
994	req->type = ix;	1237	req->type = ix;
995	req->data = newSVsv (pathname);	1238	req->data = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->dataptr = SvPVbyte_nolen (req->data);
997		1240
998	send_req (req);	1241	REQ_SEND;
999	}	1242	}
1000		1243
1001	void	1244	void
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1003	SV * oldpath	1246	SV * oldpath
1004	SV * newpath	1247	SV * newpath
1005	SV * callback	1248	SV * callback
		1249	ALIAS:
		1250	aio_link = REQ_LINK
		1251	aio_symlink = REQ_SYMLINK
		1252	aio_rename = REQ_RENAME
1006	CODE:	1253	PPCODE:
1007	{	1254	{
1008	dREQ;	1255	dREQ;
1009		1256
1010	req->type = REQ_SYMLINK;	1257	req->type = ix;
1011	req->fh = newSVsv (oldpath);	1258	req->fh = newSVsv (oldpath);
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	1259	req->data2ptr = SvPVbyte_nolen (req->fh);
1013	req->data = newSVsv (newpath);	1260	req->data = newSVsv (newpath);
1014	req->dataptr = SvPVbyte_nolen (req->data);	1261	req->dataptr = SvPVbyte_nolen (req->data);
1015		1262
1016	send_req (req);	1263	REQ_SEND;
1017	}	1264	}
1018		1265
1019	void	1266	void
1020	aio_readdir(pathname,callback=&PL_sv_undef)	1267	aio_sleep (delay,callback=&PL_sv_undef)
1021	SV * pathname	1268	double delay
1022	SV * callback	1269	SV * callback
1023	CODE:	1270	PPCODE:
1024	{	1271	{
1025	dREQ;	1272	dREQ;
1026		1273
1027	req->type = REQ_READDIR;	1274	req->type = REQ_SLEEP;
1028	req->data = newSVsv (pathname);	1275	req->fd = delay < 0. ? 0 : delay;
1029	req->dataptr = SvPVbyte_nolen (req->data);	1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1030
1031	send_req (req);
1032	}
1033		1277
		1278	REQ_SEND;
		1279	}
		1280
1034	void	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)
		1309	CODE:
		1310	if (pri < PRI_MIN) pri = PRI_MIN;
		1311	if (pri > PRI_MAX) pri = PRI_MAX;
		1312	next_pri = pri + PRI_BIAS;
		1313
		1314	void
		1315	aioreq_nice (int nice = 0)
		1316	CODE:
		1317	nice = next_pri - nice;
		1318	if (nice < PRI_MIN) nice = PRI_MIN;
		1319	if (nice > PRI_MAX) nice = PRI_MAX;
		1320	next_pri = nice + PRI_BIAS;
		1321
		1322	void
1035	flush()	1323	flush ()
1036	PROTOTYPE:	1324	PROTOTYPE:
1037	CODE:	1325	CODE:
1038	while (nreqs)	1326	while (nreqs)
1039	{	1327	{
1040	poll_wait ();	1328	poll_wait ();
…		…
1080	CODE:	1368	CODE:
1081	RETVAL = nreqs;	1369	RETVAL = nreqs;
1082	OUTPUT:	1370	OUTPUT:
1083	RETVAL	1371	RETVAL
1084		1372
		1373	PROTOTYPES: DISABLE
		1374
		1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1376
		1377	void
		1378	cancel (aio_req_ornot req)
		1379	CODE:
		1380	req_cancel (req);
		1381
		1382	void
		1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1384	CODE:
		1385	SvREFCNT_dec (req->callback);
		1386	req->callback = newSVsv (callback);
		1387
		1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1389
		1390	void
		1391	add (aio_req grp, ...)
		1392	PPCODE:
		1393	{
		1394	int i;
		1395	aio_req req;
		1396
		1397	if (grp->fd == 2)
		1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1399
		1400	for (i = 1; i < items; ++i )
		1401	{
		1402	if (GIMME_V != G_VOID)
		1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1404
		1405	req = SvAIO_REQ (ST (i));
		1406
		1407	if (req)
		1408	{
		1409	++grp->length;
		1410	req->grp = grp;
		1411
		1412	req->grp_prev = 0;
		1413	req->grp_next = grp->grp_first;
		1414
		1415	if (grp->grp_first)
		1416	grp->grp_first->grp_prev = req;
		1417
		1418	grp->grp_first = req;
		1419	}
		1420	}
		1421	}
		1422
		1423	void
		1424	result (aio_req grp, ...)
		1425	CODE:
		1426	{
		1427	int i;
		1428	AV *av = newAV ();
		1429
		1430	for (i = 1; i < items; ++i )
		1431	av_push (av, newSVsv (ST (i)));
		1432
		1433	SvREFCNT_dec (grp->data);
		1434	grp->data = (SV *)av;
		1435	}
		1436
		1437	void
		1438	limit (aio_req grp, int limit)
		1439	CODE:
		1440	grp->fd2 = limit;
		1441	aio_grp_feed (grp);
		1442
		1443	void
		1444	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1445	CODE:
		1446	{
		1447	SvREFCNT_dec (grp->fh2);
		1448	grp->fh2 = newSVsv (callback);
		1449
		1450	if (grp->fd2 <= 0)
		1451	grp->fd2 = 2;
		1452
		1453	aio_grp_feed (grp);
		1454	}
		1455

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs. Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC