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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 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"
7		12
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
		17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
12	#include <sys/types.h>	21	#include <sys/types.h>
13	#include <sys/stat.h>	22	#include <sys/stat.h>
14		23	#include <limits.h>
15	#include <unistd.h>	24	#include <unistd.h>
16	#include <fcntl.h>	25	#include <fcntl.h>
17	#include <signal.h>	26	#include <signal.h>
18	#include <sched.h>	27	#include <sched.h>
19		28
23	# elif __freebsd	32	# elif __freebsd
24	# include <sys/socket.h>	33	# include <sys/socket.h>
25	# include <sys/uio.h>	34	# include <sys/uio.h>
26	# elif __hpux	35	# elif __hpux
27	# include <sys/socket.h>	36	# include <sys/socket.h>
		37	# elif __solaris /* not yet */
		38	# include <sys/sendfile.h>
28	# else	39	# else
29	# error sendfile support requested but not available	40	# error sendfile support requested but not available
30	# endif	41	# endif
31	#endif	42	#endif
32		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
		47	#endif
		48
33	#if __ia64	49	#if __ia64
34	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
35	#else	53	#else
36	# define STACKSIZE 4096	54	# define STACKSIZE 16384
37	#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)
38		66
39	enum {	67	enum {
40	REQ_QUIT,	68	REQ_QUIT,
41	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
42	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
43	REQ_SENDFILE,	71	REQ_SENDFILE,
44	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
45	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
46	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
47	REQ_SYMLINK,	75	REQ_READDIR,
		76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
48	};	79	};
49		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
50	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
51	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
52		87
53	int type;	88	SV data, callback;
54		89	SV fh, fh2;
55	int fd, fd2;	90	void dataptr, data2ptr;
		91	Stat_t *statdata;
56	off_t offset;	92	off_t offset;
57	size_t length;	93	size_t length;
58	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
59	mode_t mode; /* open */	100	mode_t mode; /* open */
60	int errorno;
61	SV data, callback;
62	SV fh, fh2;
63	void dataptr, data2ptr;
64	STRLEN dataoffset;
65		101
66	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;
67	} aio_cb;	107	} aio_cb;
68		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
69	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	};
		123
		124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
70		125
71	static int started, wanted;	126	static int started, wanted;
72	static volatile int nreqs;	127	static volatile int nreqs;
73	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
74	static int respipe [2];	129	static int respipe [2];
75		130
		131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		133	#else
		134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		135	#endif
		136
76	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
77	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
78	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
79		140
80	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
81	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
82		143
		144	static void req_invoke (aio_req req);
83	static void free_req (aio_req req)	145	static void req_free (aio_req req);
84	{
85	if (req->data)
86	SvREFCNT_dec (req->data);
87		146
		147	/* must be called at most once */
		148	static SV req_sv (aio_req req, const char klass)
		149	{
88	if (req->fh)	150	if (!req->self)
89	SvREFCNT_dec (req->fh);	151	{
		152	req->self = (SV *)newHV ();
		153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
90		155
91	if (req->fh2)	156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		157	}
		158
		159	static aio_req SvAIO_REQ (SV *sv)
		160	{
		161	MAGIC *mg;
		162
		163	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		164	croak ("object of class " AIO_REQ_KLASS " expected");
		165
		166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		167
		168	return mg ? (aio_req)mg->mg_ptr : 0;
		169	}
		170
		171	static void aio_grp_feed (aio_req grp)
		172	{
		173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		174	{
		175	int old_len = grp->length;
		176
		177	if (grp->fh2 && SvOK (grp->fh2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->fh2, G_VOID \| G_EVAL);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191
		192	/* stop if no progress has been made */
		193	if (old_len == grp->length)
		194	{
92	SvREFCNT_dec (req->fh2);	195	SvREFCNT_dec (grp->fh2);
93		196	grp->fh2 = 0;
94	if (req->statdata)	197	break;
95	Safefree (req->statdata);	198	}
96
97	if (req->callback)
98	SvREFCNT_dec (req->callback);
99
100	Safefree (req);
101	}
102
103	static void
104	poll_wait ()
105	{
106	if (nreqs && !ress)
107	{	199	}
		200	}
		201
		202	static void aio_grp_dec (aio_req grp)
		203	{
		204	--grp->length;
		205
		206	/* call feeder, if applicable */
		207	aio_grp_feed (grp);
		208
		209	/* finish, if done */
		210	if (!grp->length && grp->fd)
		211	{
		212	req_invoke (grp);
		213	req_free (grp);
		214	}
		215	}
		216
		217	static void poll_wait ()
		218	{
108	fd_set rfd;	219	fd_set rfd;
		220
		221	while (nreqs)
		222	{
		223	aio_req req;
		224	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		225	pthread_mutex_lock (&reslock);
		226	#endif
		227	req = ress;
		228	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		229	pthread_mutex_unlock (&reslock);
		230	#endif
		231
		232	if (req)
		233	return;
		234
109	FD_ZERO(&rfd);	235	FD_ZERO(&rfd);
110	FD_SET(respipe [0], &rfd);	236	FD_SET(respipe [0], &rfd);
111		237
112	select (respipe [0] + 1, &rfd, 0, 0, 0);	238	select (respipe [0] + 1, &rfd, 0, 0, 0);
113	}	239	}
114	}	240	}
115		241
116	static int	242	static void req_invoke (aio_req req)
117	poll_cb ()	243	{
		244	dSP;
		245	int errorno = errno;
		246
		247	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
		248	return;
		249
		250	errno = req->errorno;
		251
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
		258	{
		259	case REQ_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
		262
		263	if (req->result >= 0)
		264	{
		265	char *buf = req->data2ptr;
		266	AV *av = newAV ();
		267
		268	while (req->result)
		269	{
		270	SV *sv = newSVpv (buf, 0);
		271
		272	av_push (av, sv);
		273	buf += SvCUR (sv) + 1;
		274	req->result--;
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281	}
		282	break;
		283
		284	case REQ_OPEN:
		285	{
		286	/* convert fd to fh */
		287	SV *fh;
		288
		289	PUSHs (sv_2mortal (newSViv (req->result)));
		290	PUTBACK;
		291	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		292	SPAGAIN;
		293
		294	fh = SvREFCNT_inc (POPs);
		295
		296	PUSHMARK (SP);
		297	XPUSHs (sv_2mortal (fh));
		298	}
		299	break;
		300
		301	case REQ_GROUP:
		302	req->fd = 2; /* mark group as finished */
		303
		304	if (req->data)
		305	{
		306	int i;
		307	AV av = (AV )req->data;
		308
		309	EXTEND (SP, AvFILL (av) + 1);
		310	for (i = 0; i <= AvFILL (av); ++i)
		311	PUSHs (*av_fetch (av, i, 0));
		312	}
		313	break;
		314
		315	case REQ_NOP:
		316	case REQ_SLEEP:
		317	break;
		318
		319	default:
		320	PUSHs (sv_2mortal (newSViv (req->result)));
		321	break;
		322	}
		323
		324
		325	PUTBACK;
		326	call_sv (req->callback, G_VOID \| G_EVAL);
		327	SPAGAIN;
		328
		329	FREETMPS;
		330	LEAVE;
		331
		332	errno = errorno;
		333
		334	if (SvTRUE (ERRSV))
		335	{
		336	req_free (req);
		337	croak (0);
		338	}
		339	}
		340
		341	static void req_free (aio_req req)
		342	{
		343	if (req->grp)
		344	{
		345	aio_req grp = req->grp;
		346
		347	/* unlink request */
		348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		350
		351	if (grp->grp_first == req)
		352	grp->grp_first = req->grp_next;
		353
		354	aio_grp_dec (grp);
		355	}
		356
		357	if (req->self)
		358	{
		359	sv_unmagic (req->self, PERL_MAGIC_ext);
		360	SvREFCNT_dec (req->self);
		361	}
		362
		363	SvREFCNT_dec (req->data);
		364	SvREFCNT_dec (req->fh);
		365	SvREFCNT_dec (req->fh2);
		366	SvREFCNT_dec (req->callback);
		367	Safefree (req->statdata);
		368
		369	if (req->type == REQ_READDIR && req->result >= 0)
		370	free (req->data2ptr);
		371
		372	Safefree (req);
		373	}
		374
		375	static void req_cancel (aio_req req)
		376	{
		377	req->flags \|= FLAG_CANCELLED;
		378
		379	if (req->type == REQ_GROUP)
		380	{
		381	aio_req sub;
		382
		383	for (sub = req->grp_first; sub; sub = sub->grp_next)
		384	req_cancel (sub);
		385	}
		386	}
		387
		388	static int poll_cb ()
118	{	389	{
119	dSP;	390	dSP;
120	int count = 0;	391	int count = 0;
121	int do_croak = 0;	392	int do_croak = 0;
122	aio_req req;	393	aio_req req;
…		…
144	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
145		416
146	if (!req)	417	if (!req)
147	break;	418	break;
148		419
149	nreqs--;	420	--nreqs;
150		421
151	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
152	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
153	else	429	else
154	{	430	{
155	int errorno = errno;
156	errno = req->errorno;
157
158	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
159	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
160		433
161	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
162	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
166	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
167	PL_laststatval = req->result;	440	PL_laststatval = req->result;
168	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
169	}	442	}
170		443
171	ENTER;	444	req_invoke (req);
172	PUSHMARK (SP);
173	XPUSHs (sv_2mortal (newSViv (req->result)));
174		445
175	if (req->type == REQ_OPEN)
176	{
177	/* convert fd to fh */
178	SV *fh;
179
180	PUTBACK;
181	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
182	SPAGAIN;
183
184	fh = SvREFCNT_inc (POPs);
185
186	PUSHMARK (SP);
187	XPUSHs (sv_2mortal (fh));
188	}
189
190	if (SvOK (req->callback))
191	{
192	PUTBACK;
193	call_sv (req->callback, G_VOID \| G_EVAL);
194	SPAGAIN;
195
196	if (SvTRUE (ERRSV))
197	{
198	free_req (req);
199	croak (0);
200	}
201	}
202
203	LEAVE;
204
205	errno = errorno;
206	count++;	446	count++;
207	}	447	}
208		448
209	free_req (req);	449	req_free (req);
210	}	450	}
211		451
212	return count;	452	return count;
213	}	453	}
214		454
215	static void aio_proc(void arg);	455	static void aio_proc(void arg);
216		456
217	static void
218	start_thread (void)	457	static void start_thread (void)
219	{	458	{
220	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
221	pthread_t tid;	460	pthread_t tid;
222	pthread_attr_t attr;	461	pthread_attr_t attr;
223		462
…		…
232	started++;	471	started++;
233		472
234	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
235	}	474	}
236		475
237	static void	476	static void req_send (aio_req req)
238	send_req (aio_req req)
239	{	477	{
240	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
241	start_thread ();	479	start_thread ();
242		480
243	nreqs++;	481	++nreqs;
244		482
245	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
246		484
247	req->next = 0;	485	req->next = 0;
248		486
…		…
267		505
268	poll_wait ();	506	poll_wait ();
269	}	507	}
270	}	508	}
271		509
272	static void	510	static void end_thread (void)
273	end_thread (void)
274	{	511	{
275	aio_req req;	512	aio_req req;
276	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
277	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
278		515
279	send_req (req);	516	req_send (req);
280	}	517	}
281		518
282	static void min_parallel (int nthreads)	519	static void min_parallel (int nthreads)
283	{	520	{
284	if (wanted < nthreads)	521	if (wanted < nthreads)
…		…
313	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
314	croak ("cannot set result pipe to nonblocking mode");	551	croak ("cannot set result pipe to nonblocking mode");
315		552
316	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
317	croak ("cannot set result pipe to nonblocking mode");	554	croak ("cannot set result pipe to nonblocking mode");
318	}
319
320	static void atfork_prepare (void)
321	{
322	pthread_mutex_lock (&reqlock);
323	pthread_mutex_lock (&reslock);
324	}
325
326	static void atfork_parent (void)
327	{
328	pthread_mutex_unlock (&reslock);
329	pthread_mutex_unlock (&reqlock);
330	}
331
332	static void atfork_child (void)
333	{
334	aio_req prv;
335
336	started = 0;
337
338	while (reqs)
339	{
340	prv = reqs;
341	reqs = prv->next;
342	free_req (prv);
343	}
344
345	reqs = reqe = 0;
346
347	while (ress)
348	{
349	prv = ress;
350	ress = prv->next;
351	free_req (prv);
352	}
353
354	ress = rese = 0;
355
356	close (respipe [0]);
357	close (respipe [1]);
358	create_pipe ();
359
360	atfork_parent ();
361	}	555	}
362		556
363	/*****************************************************************************/	557	/*****************************************************************************/
364	/* work around various missing functions */	558	/* work around various missing functions */
365		559
…		…
370	/*	564	/*
371	* make our pread/pwrite safe against themselves, but not against	565	* make our pread/pwrite safe against themselves, but not against
372	* normal read/write by using a mutex. slows down execution a lot,	566	* normal read/write by using a mutex. slows down execution a lot,
373	* but that's your problem, not mine.	567	* but that's your problem, not mine.
374	*/	568	*/
375	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
376		570
377	static ssize_t	571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
378	pread (int fd, void *buf, size_t count, off_t offset)
379	{	572	{
380	ssize_t res;	573	ssize_t res;
381	off_t ooffset;	574	off_t ooffset;
382		575
383	pthread_mutex_lock (&iolock);	576	pthread_mutex_lock (&preadwritelock);
384	ooffset = lseek (fd, 0, SEEK_CUR);	577	ooffset = lseek (fd, 0, SEEK_CUR);
385	lseek (fd, offset, SEEK_SET);	578	lseek (fd, offset, SEEK_SET);
386	res = read (fd, buf, count);	579	res = read (fd, buf, count);
387	lseek (fd, ooffset, SEEK_SET);	580	lseek (fd, ooffset, SEEK_SET);
388	pthread_mutex_unlock (&iolock);	581	pthread_mutex_unlock (&preadwritelock);
389		582
390	return res;	583	return res;
391	}	584	}
392		585
393	static ssize_t
394	pwrite (int fd, void *buf, size_t count, off_t offset)	586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
395	{	587	{
396	ssize_t res;	588	ssize_t res;
397	off_t ooffset;	589	off_t ooffset;
398		590
399	pthread_mutex_lock (&iolock);	591	pthread_mutex_lock (&preadwritelock);
400	ooffset = lseek (fd, 0, SEEK_CUR);	592	ooffset = lseek (fd, 0, SEEK_CUR);
401	lseek (fd, offset, SEEK_SET);	593	lseek (fd, offset, SEEK_SET);
402	res = write (fd, buf, count);	594	res = write (fd, buf, count);
403	lseek (fd, offset, SEEK_SET);	595	lseek (fd, offset, SEEK_SET);
404	pthread_mutex_unlock (&iolock);	596	pthread_mutex_unlock (&preadwritelock);
405		597
406	return res;	598	return res;
407	}	599	}
408	#endif	600	#endif
409		601
…		…
412	#endif	604	#endif
413		605
414	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
415	# define readahead aio_readahead	607	# define readahead aio_readahead
416		608
417	static char readahead_buf[4096];
418
419	static ssize_t
420	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
421	{	610	{
		611	dBUF;
		612
422	while (count > 0)	613	while (count > 0)
423	{	614	{
424	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
425		616
426	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
427	offset += len;	618	offset += len;
428	count -= len;	619	count -= len;
429	}	620	}
430		621
		622	fBUF;
		623
431	errno = 0;	624	errno = 0;
432	}	625	}
433	#endif	626	#endif
434		627
		628	#if !HAVE_READDIR_R
		629	# define readdir_r aio_readdir_r
		630
		631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		632
		633	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
		634	{
		635	struct dirent *e;
		636	int errorno;
		637
		638	pthread_mutex_lock (&readdirlock);
		639
		640	e = readdir (dirp);
		641	errorno = errno;
		642
		643	if (e)
		644	{
		645	*res = ent;
		646	strcpy (ent->d_name, e->d_name);
		647	}
		648	else
		649	*res = 0;
		650
		651	pthread_mutex_unlock (&readdirlock);
		652
		653	errno = errorno;
		654	return e ? 0 : -1;
		655	}
		656	#endif
		657
435	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
436	static ssize_t
437	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
438	{	660	{
439	ssize_t res;	661	ssize_t res;
440		662
441	if (!count)	663	if (!count)
442	return 0;	664	return 0;
443		665
		666	#if HAVE_SENDFILE
444	#if __linux	667	# if __linux
445	res = sendfile (ofd, ifd, &offset, count);	668	res = sendfile (ofd, ifd, &offset, count);
446		669
447	#elif __freebsd	670	# elif __freebsd
448	/*	671	/*
449	* Of course, the freebsd sendfile is a dire hack with no thoughts	672	* Of course, the freebsd sendfile is a dire hack with no thoughts
450	* wasted on making it similar to other i/o functions.	673	* wasted on making it similar to other I/O functions.
451	*/	674	*/
452	{	675	{
453	off_t sbytes;	676	off_t sbytes;
454	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
455		678
456	if (!res && errno == EAGAIN)	679	if (res < 0 && sbytes)
457	/* maybe on others, too, as usual, the manpage leaves you guessing */	680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
458	res = sbytes;	681	res = sbytes;
459	}	682	}
460		683
461	#elif __hpux	684	# elif __hpux
462	res = sendfile (ofd, ifd, offset, count, 0, 0);	685	res = sendfile (ofd, ifd, offset, count, 0, 0);
463		686
		687	# elif __solaris
		688	{
		689	struct sendfilevec vec;
		690	size_t sbytes;
		691
		692	vec.sfv_fd = ifd;
		693	vec.sfv_flag = 0;
		694	vec.sfv_off = offset;
		695	vec.sfv_len = count;
		696
		697	res = sendfilev (ofd, &vec, 1, &sbytes);
		698
		699	if (res < 0 && sbytes)
		700	res = sbytes;
		701	}
		702
		703	# endif
464	#else	704	#else
465	res = -1;	705	res = -1;
466	errno = ENOSYS;	706	errno = ENOSYS;
467	#endif	707	#endif
468		708
		709	if (res < 0
469	if (res < 0 && (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK))	710	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		711	#if __solaris
		712	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
		713	#endif
		714	)
		715	)
470	{	716	{
471	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
472	char *buf = malloc (4096);	718	dBUF;
		719
473	res = 0;	720	res = 0;
474		721
475	for (;;)	722	while (count)
476	{	723	{
477	ssize_t cnt;	724	ssize_t cnt;
478		725
479	cnt = pread (ifd, buf, 4096, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
480		727
481	if (cnt <= 0)	728	if (cnt <= 0)
482	{	729	{
483	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
484	break;	731	break;
485	}	732	}
486		733
487	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
488		735
489	if (cnt <= 0)	736	if (cnt <= 0)
490	{	737	{
491	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
492	break;	739	break;
493	}	740	}
494		741
495	offset += cnt;	742	offset += cnt;
496	res += cnt;	743	res += cnt;
		744	count -= cnt;
497	}	745	}
498		746
499	{	747	fBUF;
500	int errorno = errno;
501	free (buf);
502	errno = errorno;
503	}
504	}	748	}
505		749
506	return res;	750	return res;
		751	}
		752
		753	/* read a full directory */
		754	static int scandir_ (const char path, void *namesp)
		755	{
		756	DIR *dirp;
		757	union
		758	{
		759	struct dirent d;
		760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		761	} *u;
		762	struct dirent *entp;
		763	char name, names;
		764	int memlen = 4096;
		765	int memofs = 0;
		766	int res = 0;
		767	int errorno;
		768
		769	dirp = opendir (path);
		770	if (!dirp)
		771	return -1;
		772
		773	u = malloc (sizeof (*u));
		774	names = malloc (memlen);
		775
		776	if (u && names)
		777	for (;;)
		778	{
		779	errno = 0;
		780	readdir_r (dirp, &u->d, &entp);
		781
		782	if (!entp)
		783	break;
		784
		785	name = entp->d_name;
		786
		787	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
		788	{
		789	int len = strlen (name) + 1;
		790
		791	res++;
		792
		793	while (memofs + len > memlen)
		794	{
		795	memlen *= 2;
		796	names = realloc (names, memlen);
		797	if (!names)
		798	break;
		799	}
		800
		801	memcpy (names + memofs, name, len);
		802	memofs += len;
		803	}
		804	}
		805
		806	errorno = errno;
		807	free (u);
		808	closedir (dirp);
		809
		810	if (errorno)
		811	{
		812	free (names);
		813	errno = errorno;
		814	res = -1;
		815	}
		816
		817	namesp = (void )names;
		818	return res;
507	}	819	}
508		820
509	/*****************************************************************************/	821	/*****************************************************************************/
510		822
511	static void *
512	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
513	{	824	{
514	aio_req req;	825	aio_req req;
515	int type;	826	int type;
516		827
517	do	828	do
…		…
535	}	846	}
536		847
537	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
538		849
539	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
540		852
541	type = req->type;	853	if (!(req->flags & FLAG_CANCELLED))
542
543	switch (type)	854	switch (type)
544	{	855	{
545	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
546	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
547		858
548	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
549	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
550		861
551	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
552	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
553	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
554		865
555	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
556	case REQ_CLOSE: req->result = close (req->fd); break;	867	case REQ_CLOSE: req->result = close (req->fd); break;
557	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
558	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
559	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
560		873
561	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
562	case REQ_FSYNC: req->result = fsync (req->fd); break;	875	case REQ_FSYNC: req->result = fsync (req->fd); break;
		876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
563		877
		878	case REQ_SLEEP:
		879	{
		880	struct timeval tv;
		881
		882	tv.tv_sec = req->fd;
		883	tv.tv_usec = req->fd2;
		884
		885	req->result = select (0, 0, 0, 0, &tv);
		886	}
		887
		888	case REQ_GROUP:
		889	case REQ_NOP:
564	case REQ_QUIT:	890	case REQ_QUIT:
565	break;	891	break;
566		892
567	default:	893	default:
568	req->result = ENOSYS;	894	req->result = ENOSYS;
569	break;	895	break;
570	}	896	}
571		897
572	req->errorno = errno;	898	req->errorno = errno;
573		899
574	pthread_mutex_lock (&reslock);	900	pthread_mutex_lock (&reslock);
575		901
…		…
593	while (type != REQ_QUIT);	919	while (type != REQ_QUIT);
594		920
595	return 0;	921	return 0;
596	}	922	}
597		923
		924	/*****************************************************************************/
		925
		926	static void atfork_prepare (void)
		927	{
		928	pthread_mutex_lock (&reqlock);
		929	pthread_mutex_lock (&reslock);
		930	#if !HAVE_PREADWRITE
		931	pthread_mutex_lock (&preadwritelock);
		932	#endif
		933	#if !HAVE_READDIR_R
		934	pthread_mutex_lock (&readdirlock);
		935	#endif
		936	}
		937
		938	static void atfork_parent (void)
		939	{
		940	#if !HAVE_READDIR_R
		941	pthread_mutex_unlock (&readdirlock);
		942	#endif
		943	#if !HAVE_PREADWRITE
		944	pthread_mutex_unlock (&preadwritelock);
		945	#endif
		946	pthread_mutex_unlock (&reslock);
		947	pthread_mutex_unlock (&reqlock);
		948	}
		949
		950	static void atfork_child (void)
		951	{
		952	aio_req prv;
		953
		954	started = 0;
		955
		956	while (reqs)
		957	{
		958	prv = reqs;
		959	reqs = prv->next;
		960	req_free (prv);
		961	}
		962
		963	reqs = reqe = 0;
		964
		965	while (ress)
		966	{
		967	prv = ress;
		968	ress = prv->next;
		969	req_free (prv);
		970	}
		971
		972	ress = rese = 0;
		973
		974	close (respipe [0]);
		975	close (respipe [1]);
		976	create_pipe ();
		977
		978	atfork_parent ();
		979	}
		980
598	#define dREQ \	981	#define dREQ \
599	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
600	\	985	\
601	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
602	croak ("clalback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
603	\	988	\
604	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
605	if (!req) \	990	if (!req) \
606	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
607	\	992	\
608	req->callback = newSVsv (callback);	993	req->callback = newSVsv (callback); \
		994	req->pri = req_pri
		995
		996	#define REQ_SEND \
		997	req_send (req); \
		998	\
		999	if (GIMME_V != G_VOID) \
		1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));
609		1001
610	MODULE = IO::AIO PACKAGE = IO::AIO	1002	MODULE = IO::AIO PACKAGE = IO::AIO
611		1003
612	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
613		1005
614	BOOT:	1006	BOOT:
615	{	1007	{
		1008	HV *stash = gv_stashpv ("IO::AIO", 1);
		1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1012
616	create_pipe ();	1013	create_pipe ();
617	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
618	}	1015	}
619		1016
620	void	1017	void
621	min_parallel(nthreads)	1018	min_parallel (nthreads)
622	int nthreads	1019	int nthreads
623	PROTOTYPE: $	1020	PROTOTYPE: $
624		1021
625	void	1022	void
626	max_parallel(nthreads)	1023	max_parallel (nthreads)
627	int nthreads	1024	int nthreads
628	PROTOTYPE: $	1025	PROTOTYPE: $
629		1026
630	int	1027	int
631	max_outstanding(nreqs)	1028	max_outstanding (nreqs)
632	int nreqs	1029	int nreqs
633	PROTOTYPE: $	1030	PROTOTYPE: $
634	CODE:	1031	CODE:
635	RETVAL = max_outstanding;	1032	RETVAL = max_outstanding;
636	max_outstanding = nreqs;	1033	max_outstanding = nreqs;
637		1034
638	void	1035	void
639	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
640	SV * pathname	1037	SV * pathname
641	int flags	1038	int flags
642	int mode	1039	int mode
643	SV * callback	1040	SV * callback
644	PROTOTYPE: $$$;$	1041	PROTOTYPE: $$$;$
645	CODE:	1042	PPCODE:
646	{	1043	{
647	dREQ;	1044	dREQ;
648		1045
649	req->type = REQ_OPEN;	1046	req->type = REQ_OPEN;
650	req->data = newSVsv (pathname);	1047	req->data = newSVsv (pathname);
651	req->dataptr = SvPVbyte_nolen (req->data);	1048	req->dataptr = SvPVbyte_nolen (req->data);
652	req->fd = flags;	1049	req->fd = flags;
653	req->mode = mode;	1050	req->mode = mode;
654		1051
655	send_req (req);	1052	REQ_SEND;
656	}	1053	}
657		1054
658	void	1055	void
659	aio_close(fh,callback=&PL_sv_undef)	1056	aio_close (fh,callback=&PL_sv_undef)
660	SV * fh	1057	SV * fh
661	SV * callback	1058	SV * callback
662	PROTOTYPE: $;$	1059	PROTOTYPE: $;$
663	ALIAS:	1060	ALIAS:
664	aio_close = REQ_CLOSE	1061	aio_close = REQ_CLOSE
665	aio_fsync = REQ_FSYNC	1062	aio_fsync = REQ_FSYNC
666	aio_fdatasync = REQ_FDATASYNC	1063	aio_fdatasync = REQ_FDATASYNC
667	CODE:	1064	PPCODE:
668	{	1065	{
669	dREQ;	1066	dREQ;
670		1067
671	req->type = ix;	1068	req->type = ix;
672	req->fh = newSVsv (fh);	1069	req->fh = newSVsv (fh);
673	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
674		1071
675	send_req (req);	1072	REQ_SEND (req);
676	}	1073	}
677		1074
678	void	1075	void
679	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
680	SV * fh	1077	SV * fh
681	UV offset	1078	UV offset
682	UV length	1079	UV length
683	SV * data	1080	SV * data
684	UV dataoffset	1081	UV dataoffset
685	SV * callback	1082	SV * callback
686	ALIAS:	1083	ALIAS:
687	aio_read = REQ_READ	1084	aio_read = REQ_READ
688	aio_write = REQ_WRITE	1085	aio_write = REQ_WRITE
689	PROTOTYPE: $$$$$;$	1086	PROTOTYPE: $$$$$;$
690	CODE:	1087	PPCODE:
691	{	1088	{
692	aio_req req;	1089	aio_req req;
693	STRLEN svlen;	1090	STRLEN svlen;
694	char *svptr = SvPVbyte (data, svlen);	1091	char *svptr = SvPVbyte (data, svlen);
695		1092
…		…
733	{	1130	{
734	SvREADONLY_on (data);	1131	SvREADONLY_on (data);
735	req->data2ptr = (void *)data;	1132	req->data2ptr = (void *)data;
736	}	1133	}
737		1134
738	send_req (req);	1135	REQ_SEND;
739	}	1136	}
740	}	1137	}
741		1138
742	void	1139	void
743	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
744	SV * out_fh	1141	SV * out_fh
745	SV * in_fh	1142	SV * in_fh
746	UV in_offset	1143	UV in_offset
747	UV length	1144	UV length
748	SV * callback	1145	SV * callback
749	PROTOTYPE: $$$$;$	1146	PROTOTYPE: $$$$;$
750	CODE:	1147	PPCODE:
751	{	1148	{
752	dREQ;	1149	dREQ;
753		1150
754	req->type = REQ_SENDFILE;	1151	req->type = REQ_SENDFILE;
755	req->fh = newSVsv (out_fh);	1152	req->fh = newSVsv (out_fh);
…		…
757	req->fh2 = newSVsv (in_fh);	1154	req->fh2 = newSVsv (in_fh);
758	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
759	req->offset = in_offset;	1156	req->offset = in_offset;
760	req->length = length;	1157	req->length = length;
761		1158
762	send_req (req);	1159	REQ_SEND;
763	}	1160	}
764		1161
765	void	1162	void
766	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
767	SV * fh	1164	SV * fh
768	UV offset	1165	UV offset
769	IV length	1166	IV length
770	SV * callback	1167	SV * callback
771	PROTOTYPE: $$$;$	1168	PROTOTYPE: $$$;$
772	CODE:	1169	PPCODE:
773	{	1170	{
774	dREQ;	1171	dREQ;
775		1172
776	req->type = REQ_READAHEAD;	1173	req->type = REQ_READAHEAD;
777	req->fh = newSVsv (fh);	1174	req->fh = newSVsv (fh);
778	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
779	req->offset = offset;	1176	req->offset = offset;
780	req->length = length;	1177	req->length = length;
781		1178
782	send_req (req);	1179	REQ_SEND;
783	}	1180	}
784		1181
785	void	1182	void
786	aio_stat(fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (fh_or_path,callback=&PL_sv_undef)
787	SV * fh_or_path	1184	SV * fh_or_path
788	SV * callback	1185	SV * callback
789	ALIAS:	1186	ALIAS:
790	aio_stat = REQ_STAT	1187	aio_stat = REQ_STAT
791	aio_lstat = REQ_LSTAT	1188	aio_lstat = REQ_LSTAT
792	CODE:	1189	PPCODE:
793	{	1190	{
794	dREQ;	1191	dREQ;
795		1192
796	New (0, req->statdata, 1, Stat_t);	1193	New (0, req->statdata, 1, Stat_t);
797	if (!req->statdata)	1194	if (!req->statdata)
798	{	1195	{
799	free_req (req);	1196	req_free (req);
800	croak ("out of memory during aio_req->statdata allocation");	1197	croak ("out of memory during aio_req->statdata allocation");
801	}	1198	}
802		1199
803	if (SvPOK (fh_or_path))	1200	if (SvPOK (fh_or_path))
804	{	1201	{
…		…
811	req->type = REQ_FSTAT;	1208	req->type = REQ_FSTAT;
812	req->fh = newSVsv (fh_or_path);	1209	req->fh = newSVsv (fh_or_path);
813	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
814	}	1211	}
815		1212
816	send_req (req);	1213	REQ_SEND;
817	}	1214	}
818		1215
819	void	1216	void
820	aio_unlink(pathname,callback=&PL_sv_undef)	1217	aio_unlink (pathname,callback=&PL_sv_undef)
821	SV * pathname	1218	SV * pathname
822	SV * callback	1219	SV * callback
823	ALIAS:	1220	ALIAS:
824	aio_unlink = REQ_UNLINK	1221	aio_unlink = REQ_UNLINK
825	aio_rmdir = REQ_RMDIR	1222	aio_rmdir = REQ_RMDIR
		1223	aio_readdir = REQ_READDIR
826	CODE:	1224	PPCODE:
827	{	1225	{
828	dREQ;	1226	dREQ;
829		1227
830	req->type = ix;	1228	req->type = ix;
831	req->data = newSVsv (pathname);	1229	req->data = newSVsv (pathname);
832	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
833		1231
834	send_req (req);	1232	REQ_SEND;
835	}	1233	}
836		1234
837	void	1235	void
838	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)
839	SV * oldpath	1237	SV * oldpath
840	SV * newpath	1238	SV * newpath
841	SV * callback	1239	SV * callback
		1240	ALIAS:
		1241	aio_link = REQ_LINK
		1242	aio_symlink = REQ_SYMLINK
		1243	aio_rename = REQ_RENAME
842	CODE:	1244	PPCODE:
843	{	1245	{
844	dREQ;	1246	dREQ;
845		1247
846	req->type = REQ_SYMLINK;	1248	req->type = ix;
847	req->fh = newSVsv (oldpath);	1249	req->fh = newSVsv (oldpath);
848	req->data2ptr = SvPVbyte_nolen (req->fh);	1250	req->data2ptr = SvPVbyte_nolen (req->fh);
849	req->data = newSVsv (newpath);	1251	req->data = newSVsv (newpath);
850	req->dataptr = SvPVbyte_nolen (req->data);	1252	req->dataptr = SvPVbyte_nolen (req->data);
851		1253
852	send_req (req);	1254	REQ_SEND;
853	}	1255	}
854		1256
855	void	1257	void
		1258	aio_sleep (delay,callback=&PL_sv_undef)
		1259	double delay
		1260	SV * callback
		1261	PPCODE:
		1262	{
		1263	dREQ;
		1264
		1265	req->type = REQ_SLEEP;
		1266	req->fd = delay < 0. ? 0 : delay;
		1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_group (callback=&PL_sv_undef)
		1274	SV * callback
		1275	PROTOTYPE: ;$
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = REQ_GROUP;
		1281	req_send (req);
		1282
		1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1284	}
		1285
		1286	void
		1287	aio_nop (callback=&PL_sv_undef)
		1288	SV * callback
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = REQ_NOP;
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	#if 0
		1299
		1300	void
		1301	aio_pri (int pri = DEFAULT_PRI)
		1302	CODE:
		1303	if (pri < PRI_MIN) pri = PRI_MIN;
		1304	if (pri > PRI_MAX) pri = PRI_MAX;
		1305	next_pri = pri + PRI_BIAS;
		1306
		1307	#endif
		1308
		1309	void
856	flush()	1310	flush ()
857	PROTOTYPE:	1311	PROTOTYPE:
858	CODE:	1312	CODE:
859	while (nreqs)	1313	while (nreqs)
860	{	1314	{
861	poll_wait ();	1315	poll_wait ();
…		…
901	CODE:	1355	CODE:
902	RETVAL = nreqs;	1356	RETVAL = nreqs;
903	OUTPUT:	1357	OUTPUT:
904	RETVAL	1358	RETVAL
905		1359
		1360	PROTOTYPES: DISABLE
		1361
		1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1363
		1364	void
		1365	cancel (aio_req_ornot req)
		1366	CODE:
		1367	req_cancel (req);
		1368
		1369	void
		1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1371	CODE:
		1372	SvREFCNT_dec (req->callback);
		1373	req->callback = newSVsv (callback);
		1374
		1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1376
		1377	void
		1378	add (aio_req grp, ...)
		1379	PPCODE:
		1380	{
		1381	int i;
		1382	aio_req req;
		1383
		1384	if (grp->fd == 2)
		1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1386
		1387	for (i = 1; i < items; ++i )
		1388	{
		1389	if (GIMME_V != G_VOID)
		1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1391
		1392	req = SvAIO_REQ (ST (i));
		1393
		1394	if (req)
		1395	{
		1396	++grp->length;
		1397	req->grp = grp;
		1398
		1399	req->grp_prev = 0;
		1400	req->grp_next = grp->grp_first;
		1401
		1402	if (grp->grp_first)
		1403	grp->grp_first->grp_prev = req;
		1404
		1405	grp->grp_first = req;
		1406	}
		1407	}
		1408	}
		1409
		1410	void
		1411	result (aio_req grp, ...)
		1412	CODE:
		1413	{
		1414	int i;
		1415	AV *av = newAV ();
		1416
		1417	for (i = 1; i < items; ++i )
		1418	av_push (av, newSVsv (ST (i)));
		1419
		1420	SvREFCNT_dec (grp->data);
		1421	grp->data = (SV *)av;
		1422	}
		1423
		1424	void
		1425	feed_limit (aio_req grp, int limit)
		1426	CODE:
		1427	grp->fd2 = limit;
		1428	aio_grp_feed (grp);
		1429
		1430	void
		1431	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1432	CODE:
		1433	{
		1434	SvREFCNT_dec (grp->fh2);
		1435	grp->fh2 = newSVsv (callback);
		1436
		1437	if (grp->fd2 <= 0)
		1438	grp->fd2 = 2;
		1439
		1440	aio_grp_feed (grp);
		1441	}
		1442

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs. Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs.
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC