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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 1.115 by root, Sat May 10 18:06:41 2008 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
13	#include <sys/types.h>	12	#include <sys/types.h>
14	#include <sys/stat.h>	13	#include <sys/stat.h>
15	#include <limits.h>	14	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	15	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	16	#include <sched.h>
20		17
21	#if HAVE_SENDFILE	18	#ifdef _WIN32
22	# if __linux	19
23	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
24	# elif __freebsd	21	# undef malloc
25	# include <sys/socket.h>	22	# undef free
26	# include <sys/uio.h>	23
27	# elif __hpux	24	// perl overrides all those nice win32 functions
28	# include <sys/socket.h>	25	# undef open
29	# elif __solaris /* not yet */	26	# undef read
30	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
31	# else	56	#else
32	# error sendfile support requested but not available	57
33	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
34	#endif	65	#endif
35		66
36	#if __ia64	67	#define EIO_STRUCT_STAT Stat_t
37	# define STACKSIZE 65536	68
		69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
38	#else	72	#else
39	# define STACKSIZE 8192	73	# define SvVAL64 SvNV
40	#endif	74	#endif
41		75
		76	static HV *stash;
		77	typedef SV SV8; /* byte-sv, used for argument-checking */
		78
		79	#define AIO_REQ_KLASS "IO::AIO::REQ"
		80	#define AIO_GRP_KLASS "IO::AIO::GRP"
		81
		82	#define EIO_COMMON \
		83	SV *callback; \
		84	SV *sv1, *sv2; \
		85	STRLEN stroffset; \
		86	SV *self
		87
		88	#include "libeio/eio.h"
		89
		90	static int req_invoke (eio_req *req);
		91	#define EIO_FINISH(req) req_invoke (req)
		92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
		96
42	enum {	97	enum {
43	REQ_QUIT,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
44	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,
50	REQ_READDIR,
51	REQ_SYMLINK,
52	};	99	};
53		100
54	typedef struct aio_cb {	101	#include "libeio/eio.c"
55	struct aio_cb *volatile next;
56		102
57	int type;
58
59	/* should receive a cleanup, with unions */
60	int fd, fd2;
61	off_t offset;
62	size_t length;
63	ssize_t result;
64	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70
71	Stat_t *statdata;
72	} aio_cb;
73
74	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
		104	typedef eio_req *aio_req_ornot;
75		105
76	static int started, wanted;	106	static unsigned int max_outstanding = 0x7fffffff;
77	static volatile int nreqs;
78	static int max_outstanding = 1<<30;
79	static int respipe [2];
80		107
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		109
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
86	static volatile aio_req ress, rese; /* queue start, queue end */
87		111
		112	static void req_destroy (aio_req req);
88	static void free_req (aio_req req)	113	static void req_cancel (aio_req req);
89	{
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
		128
		129	/* must be called at most once */
		130	static SV *req_sv (aio_req req, const char *klass)
		131	{
93	if (req->fh)	132	if (!req->self)
94	SvREFCNT_dec (req->fh);
95
96	if (req->fh2)
97	SvREFCNT_dec (req->fh2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107
108	Safefree (req);
109	}
110
111	static void
112	poll_wait ()
113	{
114	if (nreqs && !ress)
115	{	133	{
116	fd_set rfd;	134	req->self = (SV *)newHV ();
117	FD_ZERO(&rfd);	135	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
118	FD_SET(respipe [0], &rfd);
119
120	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	136	}
122	}
123		137
124	static int	138	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
125	poll_cb ()	139	}
		140
		141	static aio_req SvAIO_REQ (SV *sv)
		142	{
		143	MAGIC *mg;
		144
		145	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		146	croak ("object of class " AIO_REQ_KLASS " expected");
		147
		148	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		149
		150	return mg ? (aio_req)mg->mg_ptr : 0;
		151	}
		152
		153	static void aio_grp_feed (aio_req grp)
		154	{
		155	if (grp->sv2 && SvOK (grp->sv2))
		156	{
		157	dSP;
		158
		159	ENTER;
		160	SAVETMPS;
		161	PUSHMARK (SP);
		162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		163	PUTBACK;
		164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		165	SPAGAIN;
		166	FREETMPS;
		167	LEAVE;
		168	}
		169	}
		170
		171	static int req_invoke (eio_req *req)
126	{	172	{
127	dSP;	173	dSP;
128	int count = 0;
129	int do_croak = 0;
130	aio_req req;
131		174
132	for (;;)	175	if (req->flags & FLAG_SV2_RO_OFF)
		176	SvREADONLY_off (req->sv2);
		177
		178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
133	{	179	{
134	pthread_mutex_lock (&reslock);	180	ENTER;
135	req = ress;	181	SAVETMPS;
		182	PUSHMARK (SP);
		183	EXTEND (SP, 1);
136		184
137	if (req)	185	switch (req->type)
138	{	186	{
139	ress = req->next;	187	case EIO_READDIR:
140
141	if (!ress)
142	{
143	/* read any signals sent by the worker threads */
144	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)
146	;
147
148	rese = 0;
149	}
150	}
151
152	pthread_mutex_unlock (&reslock);
153
154	if (!req)
155	break;
156
157	nreqs--;
158
159	if (req->type == REQ_QUIT)
160	started--;
161	else
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{	188	{
184	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
185		190
186	if (req->result >= 0)	191	if (req->result >= 0)
187	{	192	{
		193	int i;
188	char *buf = req->data2ptr;	194	char *buf = req->ptr2;
189	AV *av = newAV ();	195	AV *av = newAV ();
190		196
191	while (req->result)	197	av_extend (av, req->result - 1);
		198
		199	for (i = 0; i < req->result; ++i)
192	{	200	{
193	SV *sv = newSVpv (buf, 0);	201	SV *sv = newSVpv (buf, 0);
194		202
195	av_push (av, sv);	203	av_store (av, i, sv);
196	buf += SvCUR (sv) + 1;	204	buf += SvCUR (sv) + 1;
197	req->result--;
198	}	205	}
199		206
200	rv = sv_2mortal (newRV_noinc ((SV *)av));	207	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}	208	}
202		209
203	XPUSHs (rv);	210	PUSHs (rv);
204	}	211	}
205	else	212	break;
		213
		214	case EIO_OPEN:
206	{	215	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));	216	/* convert fd to fh */
		217	SV *fh = &PL_sv_undef;
208		218
209	if (req->type == REQ_OPEN)	219	if (req->result >= 0)
210	{	220	{
211	/* convert fd to fh */	221	GV *gv = (GV *)sv_newmortal ();
		222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
		228
		229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
212	SV *fh;	235	);
213		236
214	PUTBACK;	237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	238	fh = (SV *)gv;
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}	239	}
		240
		241	PUSHs (fh);
223	}	242	}
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++;
242	}
243
244	free_req (req);
245	}
246
247	return count;
248	}
249
250	static void *aio_proc(void *arg);
251
252	static void
253	start_thread (void)
254	{
255	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;
258
259	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263	sigfillset (&fullsigset);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267	started++;
268
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}
271
272	static void
273	send_req (aio_req req)
274	{
275	while (started < wanted && nreqs >= started)
276	start_thread ();
277
278	nreqs++;
279
280	pthread_mutex_lock (&reqlock);
281
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);
293	pthread_mutex_unlock (&reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}
306
307	static void
308	end_thread (void)
309	{
310	aio_req req;
311	Newz (0, req, 1, aio_cb);
312	req->type = REQ_QUIT;
313
314	send_req (req);
315	}
316
317	static void min_parallel (int nthreads)
318	{
319	if (wanted < nthreads)
320	wanted = nthreads;
321	}
322
323	static void max_parallel (int nthreads)
324	{
325	int cur = started;
326
327	if (wanted > nthreads)
328	wanted = nthreads;
329
330	while (cur > wanted)
331	{
332	end_thread ();
333	cur--;
334	}
335
336	while (started > wanted)
337	{
338	poll_wait ();
339	poll_cb ();
340	}
341	}
342
343	static void create_pipe ()
344	{
345	if (pipe (respipe))
346	croak ("unable to initialize result pipe");
347
348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
349	croak ("cannot set result pipe to nonblocking mode");
350
351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
352	croak ("cannot set result pipe to nonblocking mode");
353	}
354
355	/*****************************************************************************/
356	/* work around various missing functions */
357
358	#if !HAVE_PREADWRITE
359	# define pread aio_pread
360	# define pwrite aio_pwrite
361
362	/*
363	* make our pread/pwrite safe against themselves, but not against
364	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.
366	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368
369	static ssize_t
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{
372	ssize_t res;
373	off_t ooffset;
374
375	pthread_mutex_lock (&preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);
381
382	return res;
383	}
384
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)
387	{
388	ssize_t res;
389	off_t ooffset;
390
391	pthread_mutex_lock (&preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);
397
398	return res;
399	}
400	#endif
401
402	#if !HAVE_FDATASYNC
403	# define fdatasync fsync
404	#endif
405
406	#if !HAVE_READAHEAD
407	# define readahead aio_readahead
408
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)
411	{
412	char readahead_buf[4096];
413
414	while (count > 0)
415	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
417
418	pread (fd, readahead_buf, len, offset);
419	offset += len;
420	count -= len;
421	}
422
423	errno = 0;
424	}
425	#endif
426
427	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r
429
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{
435	struct dirent *e;
436	int errorno;
437
438	pthread_mutex_lock (&readdirlock);
439
440	e = readdir (dirp);
441	errorno = errno;
442
443	if (e)
444	{
445	*res = ent;
446	strcpy (ent->d_name, e->d_name);
447	}
448	else
449	*res = 0;
450
451	pthread_mutex_unlock (&readdirlock);
452
453	errno = errorno;
454	return e ? 0 : -1;
455	}
456	#endif
457
458	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461	{
462	ssize_t res;
463
464	if (!count)
465	return 0;
466
467	#if HAVE_SENDFILE
468	# if __linux
469	res = sendfile (ofd, ifd, &offset, count);
470
471	# elif __freebsd
472	/*
473	* Of course, the freebsd sendfile is a dire hack with no thoughts
474	* wasted on making it similar to other I/O functions.
475	*/
476	{
477	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479
480	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
482	res = sbytes;
483	}
484
485	# elif __hpux
486	res = sendfile (ofd, ifd, offset, count, 0, 0);
487
488	# elif __solaris
489	{
490	struct sendfilevec vec;
491	size_t sbytes;
492
493	vec.sfv_fd = ifd;
494	vec.sfv_flag = 0;
495	vec.sfv_off = offset;
496	vec.sfv_len = count;
497
498	res = sendfilev (ofd, &vec, 1, &sbytes);
499
500	if (res < 0 && sbytes)
501	res = sbytes;
502	}
503
504	# endif
505	#else
506	res = -1;
507	errno = ENOSYS;
508	#endif
509
510	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris
513	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
514	#endif
515	)
516	)
517	{
518	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];
520	res = 0;
521
522	while (count)
523	{
524	ssize_t cnt;
525
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
527
528	if (cnt <= 0)
529	{
530	if (cnt && !res) res = -1;
531	break;
532	}
533
534	cnt = write (ofd, buf, cnt);
535
536	if (cnt <= 0)
537	{
538	if (cnt && !res) res = -1;
539	break;
540	}
541
542	offset += cnt;
543	res += cnt;
544	count -= cnt;
545	}
546	}
547
548	return res;
549	}
550
551	/* read a full directory */
552	static int
553	scandir_ (const char *path, void **namesp)
554	{
555	DIR *dirp = opendir (path);
556	union
557	{
558	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;
561	struct dirent *entp;
562	char *name, *names;
563	int memlen = 4096;
564	int memofs = 0;
565	int res = 0;
566	int errorno;
567
568	if (!dirp)
569	return -1;
570
571	names = malloc (memlen);
572
573	for (;;)
574	{
575	errno = 0, readdir_r (dirp, &u.d, &entp);
576
577	if (!entp)
578	break;
579
580	name = entp->d_name;
581
582	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
583	{
584	int len = strlen (name) + 1;
585
586	res++;
587
588	while (memofs + len > memlen)
589	{
590	memlen *= 2;
591	names = realloc (names, memlen);
592	if (!names)
593	break;
594	}
595
596	memcpy (names + memofs, name, len);
597	memofs += len;
598	}
599	}
600
601	errorno = errno;
602	closedir (dirp);
603
604	if (errorno)
605	{
606	free (names);
607	errno = errorno;
608	res = -1;
609	}
610
611	*namesp = (void *)names;
612	return res;
613	}
614
615	/*****************************************************************************/
616
617	static void *
618	aio_proc (void *thr_arg)
619	{
620	aio_req req;
621	int type;
622
623	do
624	{
625	pthread_mutex_lock (&reqlock);
626
627	for (;;)
628	{
629	req = reqs;
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636
637	if (req)
638	break;	243	break;
639		244
640	pthread_cond_wait (&reqwait, &reqlock);	245	case EIO_GROUP:
641	}	246	req->int1 = 2; /* mark group as finished */
642		247
643	pthread_mutex_unlock (&reqlock);	248	if (req->sv1)
644
645	errno = 0; /* strictly unnecessary */
646
647	type = req->type;
648
649	switch (type)
650	{	249	{
651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	250	int i;
652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	251	AV *av = (AV *)req->sv1;
653		252
654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	253	EXTEND (SP, AvFILL (av) + 1);
655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	254	for (i = 0; i <= AvFILL (av); ++i)
656		255	PUSHs (*av_fetch (av, i, 0));
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	256	}
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660
661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
662	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
670
671	case REQ_QUIT:
672	break;	257	break;
673		258
		259	case EIO_NOP:
		260	case EIO_BUSY:
		261	break;
		262
		263	case EIO_READLINK:
		264	if (req->result > 0)
		265	{
		266	SvCUR_set (req->sv2, req->result);
		267	*SvEND (req->sv2) = 0;
		268	PUSHs (req->sv2);
		269	}
		270	break;
		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
		281	case EIO_READ:
		282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		283	*SvEND (req->sv2) = 0;
		284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
674	default:	292	default:
675	req->result = ENOSYS;	293	PUSHs (sv_2mortal (newSViv (req->result)));
676	break;	294	break;
677	}	295	}
678		296
679	req->errorno = errno;	297	errno = req->errorno;
680		298
681	pthread_mutex_lock (&reslock);	299	PUTBACK;
		300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		301	SPAGAIN;
682		302
683	req->next = 0;	303	FREETMPS;
		304	LEAVE;
684		305
685	if (rese)	306	PUTBACK;
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 */
695	write (respipe [1], &respipe, 1);
696	}
697
698	pthread_mutex_unlock (&reslock);
699	}	307	}
700	while (type != REQ_QUIT);
701		308
		309	return !!SvTRUE (ERRSV);
		310	}
		311
		312	static void req_destroy (aio_req req)
		313	{
		314	if (req->self)
		315	{
		316	sv_unmagic (req->self, PERL_MAGIC_ext);
		317	SvREFCNT_dec (req->self);
		318	}
		319
		320	SvREFCNT_dec (req->sv1);
		321	SvREFCNT_dec (req->sv2);
		322	SvREFCNT_dec (req->callback);
		323
		324	Safefree (req);
		325	}
		326
		327	static void req_cancel_subs (aio_req grp)
		328	{
		329	aio_req sub;
		330
		331	if (grp->type != EIO_GROUP)
702	return 0;	332	return;
703	}
704		333
705	/*****************************************************************************/	334	SvREFCNT_dec (grp->sv2);
		335	grp->sv2 = 0;
706		336
707	static void atfork_prepare (void)	337	eio_grp_cancel (grp);
708	{	338	}
709	pthread_mutex_lock (&reqlock);	339
710	pthread_mutex_lock (&reslock);	340	#ifdef USE_SOCKETS_AS_HANDLES
711	#if !HAVE_PREADWRITE	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
712	pthread_mutex_lock (&preadwritelock);	342	#else
		343	# define TO_SOCKET(x) (x)
713	#endif	344	#endif
714	#if !HAVE_READDIR_R	345
715	pthread_mutex_lock (&readdirlock);	346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
		350
		351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
716	#endif	358	#endif
717	}	359	croak ("unable to initialize result pipe");
718		360
719	static void atfork_parent (void)	361	if (old_readfd >= 0)
720	{	362	{
721	#if !HAVE_READDIR_R	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
722	pthread_mutex_unlock (&readdirlock);	364	croak ("unable to initialize result pipe(2)");
		365
		366	respipe_close (respipe [0]);
		367	respipe [0] = old_readfd;
		368	}
		369
		370	#ifdef _WIN32
		371	int arg = 1;
		372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		374	#else
		375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
723	#endif	377	#endif
724	#if !HAVE_PREADWRITE	378	croak ("unable to initialize result pipe(3)");
725	pthread_mutex_unlock (&preadwritelock);
726	#endif
727	pthread_mutex_unlock (&reslock);
728	pthread_mutex_unlock (&reqlock);
729	}
730		379
731	static void atfork_child (void)	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
732	{	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
733	aio_req prv;	382	}
734		383
735	started = 0;	384	static void poll_wait (void)
		385	{
		386	fd_set rfd;
736		387
737	while (reqs)	388	while (eio_nreqs ())
738	{	389	{
739	prv = reqs;	390	int size;
740	reqs = prv->next;	391
741	free_req (prv);	392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
		396	if (size)
		397	return;
		398
		399	maybe_start_thread ();
		400
		401	FD_ZERO (&rfd);
		402	FD_SET (respipe [0], &rfd);
		403
		404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
742	}	405	}
		406	}
743		407
744	reqs = reqe = 0;	408	static int poll_cb (void)
745		409	{
746	while (ress)	410	int res = eio_poll ();
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);
751	}
752
753	ress = rese = 0;
754		411
755	close (respipe [0]);	412	if (res > 0)
756	close (respipe [1]);	413	croak (0);
757	create_pipe ();
758		414
759	atfork_parent ();	415	return res;
760	}	416	}
761		417
762	#define dREQ \	418	#define dREQ \
763	aio_req req; \	419	aio_req req; \
		420	int req_pri = next_pri; \
		421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
764	\	422	\
765	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
767	\	425	\
768	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
769	if (!req) \	427	if (!req) \
770	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
771	\	429	\
772	req->callback = newSVsv (callback);	430	req->callback = newSVsv (callback); \
		431	req->pri = req_pri
		432
		433	#define REQ_SEND \
		434	eio_submit (req); \
		435	\
		436	if (GIMME_V != G_VOID) \
		437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
773		438
774	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
775		440
776	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
777		442
778	BOOT:	443	BOOT:
779	{	444	{
780	create_pipe ();	445	stash = gv_stashpv ("IO::AIO", 1);
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}
783		446
		447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
		459
		460	X_COND_CHECK (reqwait);
		461	#else
		462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
		464
		465	create_respipe ();
		466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
		469	}
		470
784	void	471	void
785	min_parallel(nthreads)	472	max_poll_reqs (int nreqs)
786	int nthreads
787	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
788		476
789	void	477	void
790	max_parallel(nthreads)	478	max_poll_time (double nseconds)
791	int nthreads
792	PROTOTYPE: $	479	PROTOTYPE: $
793
794	int
795	max_outstanding(nreqs)
796	int nreqs
797	PROTOTYPE: $
798	CODE:	480	CODE:
799	RETVAL = max_outstanding;	481	eio_set_max_poll_time (nseconds);
		482
		483	void
		484	min_parallel (int nthreads)
		485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
		488
		489	void
		490	max_parallel (int nthreads)
		491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
		494
		495	void
		496	max_idle (int nthreads)
		497	PROTOTYPE: $
		498	CODE:
		499	eio_set_max_idle (nthreads);
		500
		501	void
		502	max_outstanding (int maxreqs)
		503	PROTOTYPE: $
		504	CODE:
800	max_outstanding = nreqs;	505	max_outstanding = maxreqs;
801		506
802	void	507	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
804	SV * pathname
805	int flags
806	int mode
807	SV * callback
808	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
809	CODE:	510	PPCODE:
810	{	511	{
811	dREQ;	512	dREQ;
812		513
813	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
814	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
816	req->fd = flags;	517	req->int1 = flags;
817	req->mode = mode;	518	req->int2 = mode;
818		519
819	send_req (req);	520	REQ_SEND;
820	}	521	}
821		522
822	void	523	void
823	aio_close(fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
824	SV * fh
825	SV * callback
826	PROTOTYPE: $;$	525	PROTOTYPE: $;$
827	ALIAS:	526	ALIAS:
828	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
831	CODE:	529	PPCODE:
832	{	530	{
833	dREQ;	531	dREQ;
834		532
835	req->type = ix;	533	req->type = ix;
836	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
838		536
839	send_req (req);	537	REQ_SEND (req);
840	}	538	}
841		539
842	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
844	SV * fh
845	UV offset
846	UV length
847	SV * data
848	UV dataoffset
849	SV * callback
850	ALIAS:	570	ALIAS:
851	aio_read = REQ_READ	571	aio_read = EIO_READ
852	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
853	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
854	CODE:	574	PPCODE:
855	{	575	{
856	aio_req req;
857	STRLEN svlen;	576	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
859		579
860	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
861	SvPOK_on (data);	581	SvPOK_on (data);
862		582
863	if (dataoffset < 0)	583	if (dataoffset < 0)
864	dataoffset += svlen;	584	dataoffset += svlen;
865		585
866	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
867	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
868		588
869	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
870	{	590	{
871	/* write: check length and adjust. */	591	/* write: check length and adjust. */
872	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
873	length = svlen - dataoffset;	593	len = svlen - dataoffset;
874	}	594	}
875	else	595	else
876	{	596	{
877	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
878	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
879	}	599	}
880		600
881	if (length < 0)	601	if (len < 0)
882	croak ("length must not be negative");	602	croak ("length must not be negative");
883		603
884	{	604	{
885	dREQ;	605	dREQ;
886		606
887	req->type = ix;	607	req->type = ix;
888	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
889	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
890	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
891	req->offset = offset;	612	req->size = len;
892	req->length = length;
893	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
894	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
895		616
896	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
897	{	618	{
898	SvREADONLY_on (data);	619	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
900	}	621	}
901		622
902	send_req (req);	623	REQ_SEND;
903	}	624	}
904	}	625	}
905		626
906	void	627	void
		628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		629	PROTOTYPE: $$;$
		630	PPCODE:
		631	{
		632	SV *data;
		633	dREQ;
		634
		635	data = newSV (NAME_MAX);
		636	SvPOK_on (data);
		637
		638	req->type = EIO_READLINK;
		639	req->sv1 = newSVsv (path);
		640	req->ptr1 = SvPVbyte_nolen (req->sv1);
		641	req->sv2 = data;
		642	req->ptr2 = SvPVbyte_nolen (data);
		643
		644	REQ_SEND;
		645	}
		646
		647	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
908	SV * out_fh
909	SV * in_fh
910	UV in_offset
911	UV length
912	SV * callback
913	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
914	CODE:	650	PPCODE:
915	{	651	{
916	dREQ;	652	dREQ;
917		653
918	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
919	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
920	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
921	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
923	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
924	req->length = length;	660	req->size = length;
925		661
926	send_req (req);	662	REQ_SEND;
927	}	663	}
928		664
929	void	665	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
931	SV * fh
932	UV offset
933	IV length
934	SV * callback
935	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
936	CODE:	668	PPCODE:
937	{	669	{
938	dREQ;	670	dREQ;
939		671
940	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
941	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
943	req->offset = offset;	675	req->offs = SvVAL64 (offset);
944	req->length = length;	676	req->size = length;
945		677
946	send_req (req);	678	REQ_SEND;
947	}	679	}
948		680
949	void	681	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
951	SV * fh_or_path
952	SV * callback
953	ALIAS:	683	ALIAS:
954	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
955	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
956	CODE:	686	PPCODE:
957	{	687	{
958	dREQ;	688	dREQ;
959		689
960	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
961	if (!req->statdata)	691	if (!req->ptr2)
962	{	692	{
963	free_req (req);	693	req_destroy (req);
964	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
965	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
966		699
967	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
968	{	701	{
969	req->type = ix;	702	req->type = ix;
970	req->data = newSVsv (fh_or_path);
971	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
972	}	704	}
973	else	705	else
974	{	706	{
975	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
976	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		709	}
		710
		711	REQ_SEND;
		712	}
		713
		714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
978	}	725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
979		734
980	send_req (req);	735	REQ_SEND;
981	}	736	}
982		737
983	void	738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
985	SV * pathname
986	SV * callback
987	ALIAS:	809	ALIAS:
988	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
989	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
		812	aio_readdir = EIO_READDIR
990	CODE:	813	PPCODE:
991	{	814	{
992	dREQ;	815	dREQ;
993		816
994	req->type = ix;	817	req->type = ix;
995	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
997		833
998	send_req (req);	834	req->type = ix;
999	}	835	req->sv1 = newSVsv (oldpath);
1000		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
1001	void	837	req->sv2 = newSVsv (newpath);
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1003	SV * oldpath
1004	SV * newpath
1005	SV * callback
1006	CODE:
1007	{
1008	dREQ;
1009		839
1010	req->type = REQ_SYMLINK;	840	REQ_SEND;
1011	req->fh = newSVsv (oldpath);	841	}
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	842
1013	req->data = newSVsv (newpath);	843	void
1014	req->dataptr = SvPVbyte_nolen (req->data);	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		845	PPCODE:
		846	{
		847	dREQ;
1015		848
1016	send_req (req);	849	req->type = EIO_MKNOD;
1017	}	850	req->sv1 = newSVsv (pathname);
1018		851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1019	void	852	req->int2 = (mode_t)mode;
1020	aio_readdir(pathname,callback=&PL_sv_undef)	853	req->offs = dev;
1021	SV * pathname
1022	SV * callback
1023	CODE:
1024	{
1025	dREQ;
1026		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_busy (double delay, SV *callback=&PL_sv_undef)
		860	PPCODE:
		861	{
		862	dREQ;
		863
		864	req->type = EIO_BUSY;
		865	req->nv1 = delay < 0. ? 0. : delay;
		866
		867	REQ_SEND;
		868	}
		869
		870	void
		871	aio_group (SV *callback=&PL_sv_undef)
		872	PROTOTYPE: ;$
		873	PPCODE:
		874	{
		875	dREQ;
		876
		877	req->type = EIO_GROUP;
		878
		879	eio_submit (req);
		880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		881	}
		882
		883	void
		884	aio_nop (SV *callback=&PL_sv_undef)
		885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
		888	PPCODE:
		889	{
		890	dREQ;
		891
1027	req->type = REQ_READDIR;	892	req->type = ix;
1028	req->data = newSVsv (pathname);
1029	req->dataptr = SvPVbyte_nolen (req->data);
1030
1031	send_req (req);
1032	}
1033		893
		894	REQ_SEND;
		895	}
		896
		897	int
		898	aioreq_pri (int pri = 0)
		899	PROTOTYPE: ;$
		900	CODE:
		901	RETVAL = next_pri - EIO_PRI_BIAS;
		902	if (items > 0)
		903	{
		904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		906	next_pri = pri + EIO_PRI_BIAS;
		907	}
		908	OUTPUT:
		909	RETVAL
		910
1034	void	911	void
		912	aioreq_nice (int nice = 0)
		913	CODE:
		914	nice = next_pri - nice;
		915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		917	next_pri = nice + EIO_PRI_BIAS;
		918
		919	void
1035	flush()	920	flush ()
1036	PROTOTYPE:	921	PROTOTYPE:
1037	CODE:	922	CODE:
1038	while (nreqs)	923	while (nreqs)
1039	{	924	{
1040	poll_wait ();	925	poll_wait ();
1041	poll_cb ();	926	poll_cb ();
1042	}	927	}
1043		928
1044	void	929	int
1045	poll()	930	poll()
1046	PROTOTYPE:	931	PROTOTYPE:
1047	CODE:	932	CODE:
1048	if (nreqs)
1049	{
1050	poll_wait ();	933	poll_wait ();
1051	poll_cb ();	934	RETVAL = poll_cb ();
1052	}	935	OUTPUT:
		936	RETVAL
1053		937
1054	int	938	int
1055	poll_fileno()	939	poll_fileno()
1056	PROTOTYPE:	940	PROTOTYPE:
1057	CODE:	941	CODE:
…		…
1069		953
1070	void	954	void
1071	poll_wait()	955	poll_wait()
1072	PROTOTYPE:	956	PROTOTYPE:
1073	CODE:	957	CODE:
1074	if (nreqs)
1075	poll_wait ();	958	poll_wait ();
1076		959
1077	int	960	int
1078	nreqs()	961	nreqs()
1079	PROTOTYPE:	962	PROTOTYPE:
1080	CODE:	963	CODE:
1081	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1082	OUTPUT:	965	OUTPUT:
1083	RETVAL	966	RETVAL
1084		967
		968	int
		969	nready()
		970	PROTOTYPE:
		971	CODE:
		972	RETVAL = eio_nready ();
		973	OUTPUT:
		974	RETVAL
		975
		976	int
		977	npending()
		978	PROTOTYPE:
		979	CODE:
		980	RETVAL = eio_npending ();
		981	OUTPUT:
		982	RETVAL
		983
		984	int
		985	nthreads()
		986	PROTOTYPE:
		987	CODE:
		988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		989	RETVAL = started;
		990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		991	OUTPUT:
		992	RETVAL
		993
		994	PROTOTYPES: DISABLE
		995
		996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		997
		998	void
		999	cancel (aio_req_ornot req)
		1000	CODE:
		1001	eio_cancel (req);
		1002
		1003	void
		1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1005	CODE:
		1006	SvREFCNT_dec (req->callback);
		1007	req->callback = newSVsv (callback);
		1008
		1009	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1010
		1011	void
		1012	add (aio_req grp, ...)
		1013	PPCODE:
		1014	{
		1015	int i;
		1016
		1017	if (grp->int1 == 2)
		1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1019
		1020	for (i = 1; i < items; ++i )
		1021	{
		1022	aio_req req;
		1023
		1024	if (GIMME_V != G_VOID)
		1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1026
		1027	req = SvAIO_REQ (ST (i));
		1028
		1029	if (req)
		1030	eio_grp_add (grp, req);
		1031	}
		1032	}
		1033
		1034	void
		1035	cancel_subs (aio_req_ornot req)
		1036	CODE:
		1037	req_cancel_subs (req);
		1038
		1039	void
		1040	result (aio_req grp, ...)
		1041	CODE:
		1042	{
		1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
		1048	av = newAV ();
		1049
		1050	for (i = 1; i < items; ++i )
		1051	av_push (av, newSVsv (ST (i)));
		1052
		1053	SvREFCNT_dec (grp->sv1);
		1054	grp->sv1 = (SV *)av;
		1055	}
		1056
		1057	void
		1058	errno (aio_req grp, int errorno = errno)
		1059	CODE:
		1060	grp->errorno = errorno;
		1061
		1062	void
		1063	limit (aio_req grp, int limit)
		1064	CODE:
		1065	eio_grp_limit (grp, limit);
		1066
		1067	void
		1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1069	CODE:
		1070	{
		1071	SvREFCNT_dec (grp->sv2);
		1072	grp->sv2 = newSVsv (callback);
		1073
		1074	if (grp->int2 <= 0)
		1075	grp->int2 = 2;
		1076
		1077	eio_grp_limit (grp, grp->int2);
		1078	}
		1079

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