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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.65 by root, Tue Oct 24 00:26:32 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>
		39	# else
		40	# error sendfile support requested but not available
28	# endif	41	# endif
		42	#endif
		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
29	#endif	47	#endif
30		48
31	#if __ia64	49	#if __ia64
32	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
33	#else	53	#else
34	# define STACKSIZE 4096	54	# define STACKSIZE 16384
35	#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)
36		66
37	enum {	67	enum {
38	REQ_QUIT,	68	REQ_QUIT,
39	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
40	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
41	REQ_SENDFILE,	71	REQ_SENDFILE,
42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
44	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45	REQ_SYMLINK,	75	REQ_READDIR,
		76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
46	};	79	};
47		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
48	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
49	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
50		87
51	int type;	88	SV data, callback;
52		89	SV fh, fh2;
53	int fd, fd2;	90	void dataptr, data2ptr;
		91	Stat_t *statdata;
54	off_t offset;	92	off_t offset;
55	size_t length;	93	size_t length;
56	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
57	mode_t mode; /* open */	100	mode_t mode; /* open */
58	int errorno;
59	SV data, callback;
60	SV fh, fh2;
61	void dataptr, data2ptr;
62	STRLEN dataoffset;
63		101
64	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;
65	} aio_cb;	107	} aio_cb;
66		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
67	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;
68		125
69	static int started, wanted;	126	static int started, wanted;
70	static volatile int nreqs;	127	static volatile int nreqs;
71	static int max_outstanding = 1<<30;	128	static int max_outstanding = 1<<30;
72	static int respipe [2];	129	static int respipe [2];
73		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
74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77		140
78	static volatile aio_req reqs, reqe; /* queue start, queue end */	141	static volatile aio_req reqs, reqe; /* queue start, queue end */
79	static volatile aio_req ress, rese; /* queue start, queue end */	142	static volatile aio_req ress, rese; /* queue start, queue end */
80		143
		144	static void req_invoke (aio_req req);
81	static void free_req (aio_req req)	145	static void req_free (aio_req req);
82	{
83	if (req->data)
84	SvREFCNT_dec (req->data);
85		146
		147	/* must be called at most once */
		148	static SV req_sv (aio_req req, const char klass)
		149	{
86	if (req->fh)	150	if (!req->self)
87	SvREFCNT_dec (req->fh);	151	{
		152	req->self = (SV *)newHV ();
		153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		154	}
88		155
89	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	{
90	SvREFCNT_dec (req->fh2);	195	SvREFCNT_dec (grp->fh2);
91		196	grp->fh2 = 0;
92	if (req->statdata)	197	break;
93	Safefree (req->statdata);	198	}
94
95	if (req->callback)
96	SvREFCNT_dec (req->callback);
97
98	Safefree (req);
99	}
100
101	static void
102	poll_wait ()
103	{
104	if (nreqs && !ress)
105	{	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	{
106	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
107	FD_ZERO(&rfd);	235	FD_ZERO(&rfd);
108	FD_SET(respipe [0], &rfd);	236	FD_SET(respipe [0], &rfd);
109		237
110	select (respipe [0] + 1, &rfd, 0, 0, 0);	238	select (respipe [0] + 1, &rfd, 0, 0, 0);
111	}	239	}
112	}	240	}
113		241
114	static int	242	static void req_invoke (aio_req req)
115	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 ()
116	{	389	{
117	dSP;	390	dSP;
118	int count = 0;	391	int count = 0;
119	int do_croak = 0;	392	int do_croak = 0;
120	aio_req req;	393	aio_req req;
…		…
142	pthread_mutex_unlock (&reslock);	415	pthread_mutex_unlock (&reslock);
143		416
144	if (!req)	417	if (!req)
145	break;	418	break;
146		419
147	nreqs--;	420	--nreqs;
148		421
149	if (req->type == REQ_QUIT)	422	if (req->type == REQ_QUIT)
150	started--;	423	started--;
		424	else if (req->type == REQ_GROUP && req->length)
		425	{
		426	req->fd = 1; /* mark request as delayed */
		427	continue;
		428	}
151	else	429	else
152	{	430	{
153	int errorno = errno;
154	errno = req->errorno;
155
156	if (req->type == REQ_READ)	431	if (req->type == REQ_READ)
157	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));
158		433
159	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	434	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
160	SvREADONLY_off (req->data);	435	SvREADONLY_off (req->data);
…		…
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	440	PL_laststatval = req->result;
166	PL_statcache = *(req->statdata);	441	PL_statcache = *(req->statdata);
167	}	442	}
168		443
169	ENTER;	444	req_invoke (req);
170	PUSHMARK (SP);
171	XPUSHs (sv_2mortal (newSViv (req->result)));
172		445
173	if (req->type == REQ_OPEN)
174	{
175	/* convert fd to fh */
176	SV *fh;
177
178	PUTBACK;
179	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
180	SPAGAIN;
181
182	fh = SvREFCNT_inc (POPs);
183
184	PUSHMARK (SP);
185	XPUSHs (sv_2mortal (fh));
186	}
187
188	if (SvOK (req->callback))
189	{
190	PUTBACK;
191	call_sv (req->callback, G_VOID \| G_EVAL);
192	SPAGAIN;
193
194	if (SvTRUE (ERRSV))
195	{
196	free_req (req);
197	croak (0);
198	}
199	}
200
201	LEAVE;
202
203	errno = errorno;
204	count++;	446	count++;
205	}	447	}
206		448
207	free_req (req);	449	req_free (req);
208	}	450	}
209		451
210	return count;	452	return count;
211	}	453	}
212		454
213	static void aio_proc(void arg);	455	static void aio_proc(void arg);
214		456
215	static void
216	start_thread (void)	457	static void start_thread (void)
217	{	458	{
218	sigset_t fullsigset, oldsigset;	459	sigset_t fullsigset, oldsigset;
219	pthread_t tid;	460	pthread_t tid;
220	pthread_attr_t attr;	461	pthread_attr_t attr;
221		462
…		…
230	started++;	471	started++;
231		472
232	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
233	}	474	}
234		475
235	static void	476	static void req_send (aio_req req)
236	send_req (aio_req req)
237	{	477	{
238	while (started < wanted && nreqs >= started)	478	while (started < wanted && nreqs >= started)
239	start_thread ();	479	start_thread ();
240		480
241	nreqs++;	481	++nreqs;
242		482
243	pthread_mutex_lock (&reqlock);	483	pthread_mutex_lock (&reqlock);
244		484
245	req->next = 0;	485	req->next = 0;
246		486
…		…
265		505
266	poll_wait ();	506	poll_wait ();
267	}	507	}
268	}	508	}
269		509
270	static void	510	static void end_thread (void)
271	end_thread (void)
272	{	511	{
273	aio_req req;	512	aio_req req;
274	Newz (0, req, 1, aio_cb);	513	Newz (0, req, 1, aio_cb);
275	req->type = REQ_QUIT;	514	req->type = REQ_QUIT;
276		515
277	send_req (req);	516	req_send (req);
278	}	517	}
279		518
280	static void min_parallel (int nthreads)	519	static void min_parallel (int nthreads)
281	{	520	{
282	if (wanted < nthreads)	521	if (wanted < nthreads)
…		…
311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312	croak ("cannot set result pipe to nonblocking mode");	551	croak ("cannot set result pipe to nonblocking mode");
313		552
314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315	croak ("cannot set result pipe to nonblocking mode");	554	croak ("cannot set result pipe to nonblocking mode");
316	}
317
318	static void atfork_prepare (void)
319	{
320	pthread_mutex_lock (&reqlock);
321	pthread_mutex_lock (&reslock);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	aio_req prv;
333
334	started = 0;
335
336	while (reqs)
337	{
338	prv = reqs;
339	reqs = prv->next;
340	free_req (prv);
341	}
342
343	reqs = reqe = 0;
344
345	while (ress)
346	{
347	prv = ress;
348	ress = prv->next;
349	free_req (prv);
350	}
351
352	ress = rese = 0;
353
354	close (respipe [0]);
355	close (respipe [1]);
356	create_pipe ();
357
358	atfork_parent ();
359	}	555	}
360		556
361	/*****************************************************************************/	557	/*****************************************************************************/
362	/* work around various missing functions */	558	/* work around various missing functions */
363		559
…		…
368	/*	564	/*
369	* make our pread/pwrite safe against themselves, but not against	565	* make our pread/pwrite safe against themselves, but not against
370	* 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,
371	* but that's your problem, not mine.	567	* but that's your problem, not mine.
372	*/	568	*/
373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		570
375	static ssize_t	571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	572	{
378	ssize_t res;	573	ssize_t res;
379	off_t ooffset;	574	off_t ooffset;
380		575
381	pthread_mutex_lock (&iolock);	576	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	577	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	578	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	579	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	580	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&iolock);	581	pthread_mutex_unlock (&preadwritelock);
387		582
388	return res;	583	return res;
389	}	584	}
390		585
391	static ssize_t
392	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)
393	{	587	{
394	ssize_t res;	588	ssize_t res;
395	off_t ooffset;	589	off_t ooffset;
396		590
397	pthread_mutex_lock (&iolock);	591	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	592	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	593	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	594	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	595	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&iolock);	596	pthread_mutex_unlock (&preadwritelock);
403		597
404	return res;	598	return res;
405	}	599	}
406	#endif	600	#endif
407		601
…		…
410	#endif	604	#endif
411		605
412	#if !HAVE_READAHEAD	606	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	607	# define readahead aio_readahead
414		608
415	static char readahead_buf[4096];
416
417	static ssize_t
418	readahead (int fd, off_t offset, size_t count)	609	static ssize_t readahead (int fd, off_t offset, size_t count)
419	{	610	{
		611	dBUF;
		612
420	while (count > 0)	613	while (count > 0)
421	{	614	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		616
424	pread (fd, readahead_buf, len, offset);	617	pread (fd, aio_buf, len, offset);
425	offset += len;	618	offset += len;
426	count -= len;	619	count -= len;
427	}	620	}
428		621
		622	fBUF;
		623
429	errno = 0;	624	errno = 0;
430	}	625	}
431	#endif	626	#endif
432		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
433	/* sendfile always needs emulation */	658	/* sendfile always needs emulation */
434	static ssize_t
435	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)
436	{	660	{
437	ssize_t res;	661	ssize_t res;
438		662
439	if (!count)	663	if (!count)
440	return 0;	664	return 0;
441		665
		666	#if HAVE_SENDFILE
442	#if __linux	667	# if __linux
443	res = sendfile (ofd, ifd, &offset, count);	668	res = sendfile (ofd, ifd, &offset, count);
444		669
445	#elif __freebsd	670	# elif __freebsd
446	/*	671	/*
447	* 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
448	* wasted on making it similar to other i/o functions.	673	* wasted on making it similar to other I/O functions.
449	*/	674	*/
450	{	675	{
451	off_t sbytes;	676	off_t sbytes;
452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453		678
454	if (!res && errno == EAGAIN)	679	if (res < 0 && sbytes)
455	/* maybe on others, too, as usual, the manpage leaves you guessing */	680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
456	res = sbytes;	681	res = sbytes;
457	}	682	}
458		683
459	#elif __hpux	684	# elif __hpux
460	res = sendfile (ofd, ifd, offset, count, 0, 0);	685	res = sendfile (ofd, ifd, offset, count, 0, 0);
461		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
462	#else	704	#else
463	res = -1;	705	res = -1;
464	errno = ENOSYS;	706	errno = ENOSYS;
465	#endif	707	#endif
466		708
		709	if (res < 0
467	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	)
468	{	716	{
469	/* emulate sendfile. this is a major pain in the ass */	717	/* emulate sendfile. this is a major pain in the ass */
470	char *buf = malloc (4096);	718	dBUF;
		719
471	res = 0;	720	res = 0;
472		721
473	for (;;)	722	while (count)
474	{	723	{
475	ssize_t cnt;	724	ssize_t cnt;
476		725
477	cnt = pread (ifd, buf, 4096, offset);	726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
478		727
479	if (cnt <= 0)	728	if (cnt <= 0)
480	{	729	{
481	if (cnt && !res) res = -1;	730	if (cnt && !res) res = -1;
482	break;	731	break;
483	}	732	}
484		733
485	cnt = write (ofd, buf, cnt);	734	cnt = write (ofd, aio_buf, cnt);
486		735
487	if (cnt <= 0)	736	if (cnt <= 0)
488	{	737	{
489	if (cnt && !res) res = -1;	738	if (cnt && !res) res = -1;
490	break;	739	break;
491	}	740	}
492		741
493	offset += cnt;	742	offset += cnt;
494	res += cnt;	743	res += cnt;
		744	count -= cnt;
495	}	745	}
496		746
497	{	747	fBUF;
498	int errorno = errno;
499	free (buf);
500	errno = errorno;
501	}
502	}	748	}
503		749
504	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;
505	}	819	}
506		820
507	/*****************************************************************************/	821	/*****************************************************************************/
508		822
509	static void *
510	aio_proc (void *thr_arg)	823	static void aio_proc (void thr_arg)
511	{	824	{
512	aio_req req;	825	aio_req req;
513	int type;	826	int type;
514		827
515	do	828	do
…		…
533	}	846	}
534		847
535	pthread_mutex_unlock (&reqlock);	848	pthread_mutex_unlock (&reqlock);
536		849
537	errno = 0; /* strictly unnecessary */	850	errno = 0; /* strictly unnecessary */
		851	type = req->type; /* remember type for QUIT check */
538		852
539	type = req->type;	853	if (!(req->flags & FLAG_CANCELLED))
540
541	switch (type)	854	switch (type)
542	{	855	{
543	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;
544	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;
545		858
546	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;
547	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;
548		861
549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552		865
553	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;
554	case REQ_CLOSE: req->result = close (req->fd); break;	867	case REQ_CLOSE: req->result = close (req->fd); break;
555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556	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;
557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558		873
559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560	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;
561		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:
562	case REQ_QUIT:	890	case REQ_QUIT:
563	break;	891	break;
564		892
565	default:	893	default:
566	req->result = ENOSYS;	894	req->result = ENOSYS;
567	break;	895	break;
568	}	896	}
569		897
570	req->errorno = errno;	898	req->errorno = errno;
571		899
572	pthread_mutex_lock (&reslock);	900	pthread_mutex_lock (&reslock);
573		901
…		…
591	while (type != REQ_QUIT);	919	while (type != REQ_QUIT);
592		920
593	return 0;	921	return 0;
594	}	922	}
595		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
596	#define dREQ \	981	#define dREQ \
597	aio_req req; \	982	aio_req req; \
		983	int req_pri = next_pri; \
		984	next_pri = DEFAULT_PRI + PRI_BIAS; \
598	\	985	\
599	if (SvOK (callback) && !SvROK (callback)) \	986	if (SvOK (callback) && !SvROK (callback)) \
600	croak ("clalback must be undef or of reference type"); \	987	croak ("callback must be undef or of reference type"); \
601	\	988	\
602	Newz (0, req, 1, aio_cb); \	989	Newz (0, req, 1, aio_cb); \
603	if (!req) \	990	if (!req) \
604	croak ("out of memory during aio_req allocation"); \	991	croak ("out of memory during aio_req allocation"); \
605	\	992	\
606	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));
607		1001
608	MODULE = IO::AIO PACKAGE = IO::AIO	1002	MODULE = IO::AIO PACKAGE = IO::AIO
609		1003
610	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
611		1005
612	BOOT:	1006	BOOT:
613	{	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
614	create_pipe ();	1013	create_pipe ();
615	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616	}	1015	}
617		1016
618	void	1017	void
619	min_parallel(nthreads)	1018	min_parallel (nthreads)
620	int nthreads	1019	int nthreads
621	PROTOTYPE: $	1020	PROTOTYPE: $
622		1021
623	void	1022	void
624	max_parallel(nthreads)	1023	max_parallel (nthreads)
625	int nthreads	1024	int nthreads
626	PROTOTYPE: $	1025	PROTOTYPE: $
627		1026
628	int	1027	int
629	max_outstanding(nreqs)	1028	max_outstanding (nreqs)
630	int nreqs	1029	int nreqs
631	PROTOTYPE: $	1030	PROTOTYPE: $
632	CODE:	1031	CODE:
633	RETVAL = max_outstanding;	1032	RETVAL = max_outstanding;
634	max_outstanding = nreqs;	1033	max_outstanding = nreqs;
635		1034
636	void	1035	void
637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638	SV * pathname	1037	SV * pathname
639	int flags	1038	int flags
640	int mode	1039	int mode
641	SV * callback	1040	SV * callback
642	PROTOTYPE: $$$;$	1041	PROTOTYPE: $$$;$
643	CODE:	1042	PPCODE:
644	{	1043	{
645	dREQ;	1044	dREQ;
646		1045
647	req->type = REQ_OPEN;	1046	req->type = REQ_OPEN;
648	req->data = newSVsv (pathname);	1047	req->data = newSVsv (pathname);
649	req->dataptr = SvPVbyte_nolen (req->data);	1048	req->dataptr = SvPVbyte_nolen (req->data);
650	req->fd = flags;	1049	req->fd = flags;
651	req->mode = mode;	1050	req->mode = mode;
652		1051
653	send_req (req);	1052	REQ_SEND;
654	}	1053	}
655		1054
656	void	1055	void
657	aio_close(fh,callback=&PL_sv_undef)	1056	aio_close (fh,callback=&PL_sv_undef)
658	SV * fh	1057	SV * fh
659	SV * callback	1058	SV * callback
660	PROTOTYPE: $;$	1059	PROTOTYPE: $;$
661	ALIAS:	1060	ALIAS:
662	aio_close = REQ_CLOSE	1061	aio_close = REQ_CLOSE
663	aio_fsync = REQ_FSYNC	1062	aio_fsync = REQ_FSYNC
664	aio_fdatasync = REQ_FDATASYNC	1063	aio_fdatasync = REQ_FDATASYNC
665	CODE:	1064	PPCODE:
666	{	1065	{
667	dREQ;	1066	dREQ;
668		1067
669	req->type = ix;	1068	req->type = ix;
670	req->fh = newSVsv (fh);	1069	req->fh = newSVsv (fh);
671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672		1071
673	send_req (req);	1072	REQ_SEND (req);
674	}	1073	}
675		1074
676	void	1075	void
677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678	SV * fh	1077	SV * fh
679	UV offset	1078	UV offset
680	UV length	1079	UV length
681	SV * data	1080	SV * data
682	UV dataoffset	1081	UV dataoffset
683	SV * callback	1082	SV * callback
684	ALIAS:	1083	ALIAS:
685	aio_read = REQ_READ	1084	aio_read = REQ_READ
686	aio_write = REQ_WRITE	1085	aio_write = REQ_WRITE
687	PROTOTYPE: $$$$$;$	1086	PROTOTYPE: $$$$$;$
688	CODE:	1087	PPCODE:
689	{	1088	{
690	aio_req req;	1089	aio_req req;
691	STRLEN svlen;	1090	STRLEN svlen;
692	char *svptr = SvPVbyte (data, svlen);	1091	char *svptr = SvPVbyte (data, svlen);
693		1092
…		…
731	{	1130	{
732	SvREADONLY_on (data);	1131	SvREADONLY_on (data);
733	req->data2ptr = (void *)data;	1132	req->data2ptr = (void *)data;
734	}	1133	}
735		1134
736	send_req (req);	1135	REQ_SEND;
737	}	1136	}
738	}	1137	}
739		1138
740	void	1139	void
741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742	SV * out_fh	1141	SV * out_fh
743	SV * in_fh	1142	SV * in_fh
744	UV in_offset	1143	UV in_offset
745	UV length	1144	UV length
746	SV * callback	1145	SV * callback
747	PROTOTYPE: $$$$;$	1146	PROTOTYPE: $$$$;$
748	CODE:	1147	PPCODE:
749	{	1148	{
750	dREQ;	1149	dREQ;
751		1150
752	req->type = REQ_SENDFILE;	1151	req->type = REQ_SENDFILE;
753	req->fh = newSVsv (out_fh);	1152	req->fh = newSVsv (out_fh);
…		…
755	req->fh2 = newSVsv (in_fh);	1154	req->fh2 = newSVsv (in_fh);
756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757	req->offset = in_offset;	1156	req->offset = in_offset;
758	req->length = length;	1157	req->length = length;
759		1158
760	send_req (req);	1159	REQ_SEND;
761	}	1160	}
762		1161
763	void	1162	void
764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765	SV * fh	1164	SV * fh
766	UV offset	1165	UV offset
767	IV length	1166	IV length
768	SV * callback	1167	SV * callback
769	PROTOTYPE: $$$;$	1168	PROTOTYPE: $$$;$
770	CODE:	1169	PPCODE:
771	{	1170	{
772	dREQ;	1171	dREQ;
773		1172
774	req->type = REQ_READAHEAD;	1173	req->type = REQ_READAHEAD;
775	req->fh = newSVsv (fh);	1174	req->fh = newSVsv (fh);
776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777	req->offset = offset;	1176	req->offset = offset;
778	req->length = length;	1177	req->length = length;
779		1178
780	send_req (req);	1179	REQ_SEND;
781	}	1180	}
782		1181
783	void	1182	void
784	aio_stat(fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (fh_or_path,callback=&PL_sv_undef)
785	SV * fh_or_path	1184	SV * fh_or_path
786	SV * callback	1185	SV * callback
787	ALIAS:	1186	ALIAS:
788	aio_stat = REQ_STAT	1187	aio_stat = REQ_STAT
789	aio_lstat = REQ_LSTAT	1188	aio_lstat = REQ_LSTAT
790	CODE:	1189	PPCODE:
791	{	1190	{
792	dREQ;	1191	dREQ;
793		1192
794	New (0, req->statdata, 1, Stat_t);	1193	New (0, req->statdata, 1, Stat_t);
795	if (!req->statdata)	1194	if (!req->statdata)
796	{	1195	{
797	free_req (req);	1196	req_free (req);
798	croak ("out of memory during aio_req->statdata allocation");	1197	croak ("out of memory during aio_req->statdata allocation");
799	}	1198	}
800		1199
801	if (SvPOK (fh_or_path))	1200	if (SvPOK (fh_or_path))
802	{	1201	{
…		…
809	req->type = REQ_FSTAT;	1208	req->type = REQ_FSTAT;
810	req->fh = newSVsv (fh_or_path);	1209	req->fh = newSVsv (fh_or_path);
811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812	}	1211	}
813		1212
814	send_req (req);	1213	REQ_SEND;
815	}	1214	}
816		1215
817	void	1216	void
818	aio_unlink(pathname,callback=&PL_sv_undef)	1217	aio_unlink (pathname,callback=&PL_sv_undef)
819	SV * pathname	1218	SV * pathname
820	SV * callback	1219	SV * callback
821	ALIAS:	1220	ALIAS:
822	aio_unlink = REQ_UNLINK	1221	aio_unlink = REQ_UNLINK
823	aio_rmdir = REQ_RMDIR	1222	aio_rmdir = REQ_RMDIR
		1223	aio_readdir = REQ_READDIR
824	CODE:	1224	PPCODE:
825	{	1225	{
826	dREQ;	1226	dREQ;
827		1227
828	req->type = ix;	1228	req->type = ix;
829	req->data = newSVsv (pathname);	1229	req->data = newSVsv (pathname);
830	req->dataptr = SvPVbyte_nolen (req->data);	1230	req->dataptr = SvPVbyte_nolen (req->data);
831		1231
832	send_req (req);	1232	REQ_SEND;
833	}	1233	}
834		1234
835	void	1235	void
836	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)
837	SV * oldpath	1237	SV * oldpath
838	SV * newpath	1238	SV * newpath
839	SV * callback	1239	SV * callback
		1240	ALIAS:
		1241	aio_link = REQ_LINK
		1242	aio_symlink = REQ_SYMLINK
		1243	aio_rename = REQ_RENAME
840	CODE:	1244	PPCODE:
841	{	1245	{
842	dREQ;	1246	dREQ;
843		1247
844	req->type = REQ_SYMLINK;	1248	req->type = ix;
845	req->fh = newSVsv (oldpath);	1249	req->fh = newSVsv (oldpath);
846	req->data2ptr = SvPVbyte_nolen (req->fh);	1250	req->data2ptr = SvPVbyte_nolen (req->fh);
847	req->data = newSVsv (newpath);	1251	req->data = newSVsv (newpath);
848	req->dataptr = SvPVbyte_nolen (req->data);	1252	req->dataptr = SvPVbyte_nolen (req->data);
849		1253
850	send_req (req);	1254	REQ_SEND;
851	}	1255	}
852		1256
853	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
854	flush()	1310	flush ()
855	PROTOTYPE:	1311	PROTOTYPE:
856	CODE:	1312	CODE:
857	while (nreqs)	1313	while (nreqs)
858	{	1314	{
859	poll_wait ();	1315	poll_wait ();
…		…
899	CODE:	1355	CODE:
900	RETVAL = nreqs;	1356	RETVAL = nreqs;
901	OUTPUT:	1357	OUTPUT:
902	RETVAL	1358	RETVAL
903		1359
		1360	PROTOTYPES: DISABLE
		1361
		1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1363
		1364	void
		1365	cancel (aio_req_ornot req)
		1366	PROTOTYPE:
		1367	CODE:
		1368	req_cancel (req);
		1369
		1370	void
		1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1372	CODE:
		1373	SvREFCNT_dec (req->callback);
		1374	req->callback = newSVsv (callback);
		1375
		1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1377
		1378	void
		1379	add (aio_req grp, ...)
		1380	PPCODE:
		1381	{
		1382	int i;
		1383	aio_req req;
		1384
		1385	if (grp->fd == 2)
		1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1387
		1388	for (i = 1; i < items; ++i )
		1389	{
		1390	if (GIMME_V != G_VOID)
		1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1392
		1393	req = SvAIO_REQ (ST (i));
		1394
		1395	if (req)
		1396	{
		1397	++grp->length;
		1398	req->grp = grp;
		1399
		1400	req->grp_prev = 0;
		1401	req->grp_next = grp->grp_first;
		1402
		1403	if (grp->grp_first)
		1404	grp->grp_first->grp_prev = req;
		1405
		1406	grp->grp_first = req;
		1407	}
		1408	}
		1409	}
		1410
		1411	void
		1412	result (aio_req grp, ...)
		1413	CODE:
		1414	{
		1415	int i;
		1416	AV *av = newAV ();
		1417
		1418	for (i = 1; i < items; ++i )
		1419	av_push (av, newSVsv (ST (i)));
		1420
		1421	SvREFCNT_dec (grp->data);
		1422	grp->data = (SV *)av;
		1423	}
		1424
		1425	void
		1426	feed_limit (aio_req grp, int limit)
		1427	CODE:
		1428	grp->fd2 = limit;
		1429	aio_grp_feed (grp);
		1430
		1431	void
		1432	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1433	CODE:
		1434	{
		1435	SvREFCNT_dec (grp->fh2);
		1436	grp->fh2 = newSVsv (callback);
		1437
		1438	if (grp->fd2 <= 0)
		1439	grp->fd2 = 2;
		1440
		1441	aio_grp_feed (grp);
		1442	}
		1443

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs. Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC