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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
28		17
29	#if HAVE_SENDFILE	18	/* perl namespace pollution */
30	# if __linux	19	#undef VERSION
31	# include <sys/sendfile.h>	20
32	# elif __freebsd	21	#ifdef _WIN32
33	# include <sys/socket.h>	22
34	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __hpux	24	# undef malloc
36	# include <sys/socket.h>	25	# undef free
37	# elif __solaris /* not yet */	26
38	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
39	# else	59	#else
40	# error sendfile support requested but not available	60
41	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
42	#endif	68	#endif
43		69
44	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
45	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
46	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
47	#endif	87	#endif
48		88
49	#if __ia64	89	/*****************************************************************************/
50	# define STACKSIZE 65536	90
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	91	#if __GNUC__ >= 3
52	# define STACKSIZE PTHREAD_STACK_MIN	92	# define expect(expr,value) __builtin_expect ((expr),(value))
53	#else	93	#else
54	# define STACKSIZE 16384	94	# define expect(expr,value) (expr)
55	#endif	95	#endif
56		96
57	/* buffer size for various temporary buffers */	97	#define expect_false(expr) expect ((expr) != 0, 0)
58	#define AIO_BUFSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
59		99
60	#define dBUF \	100	/*****************************************************************************/
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64		101
65	#define fBUF free (aio_buf)	102	static HV *stash;
66		103	typedef SV SV8; /* byte-sv, used for argument-checking */
67	enum {	104	typedef int aio_rfd; /* read file desriptor */
68	REQ_QUIT,	105	typedef int aio_wfd; /* write file descriptor */
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};
80		106
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		109
84	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	111	SV *callback; \
89	SV *fh, *fh2;	112	SV *sv1, *sv2; \
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;	113	STRLEN stroffset; \
97	int type;	114	SV *self;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		115
102	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
103	unsigned char pri;
104		117
105	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
107	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	#endif
		123
		124	#ifndef POSIX_FADV_SEQUENTIAL
		125	# define POSIX_FADV_SEQUENTIAL 0
		126	#endif
		127
		128	#ifndef POSIX_FADV_RANDOM
		129	# define POSIX_FADV_RANDOM 0
		130	#endif
		131
		132	#ifndef POSIX_FADV_NOREUSE
		133	# define POSIX_FADV_NOREUSE 0
		134	#endif
		135
		136	#ifndef POSIX_FADV_WILLNEED
		137	# define POSIX_FADV_WILLNEED 0
		138	#endif
		139
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	static int req_invoke (eio_req *req);
		145	#define EIO_FINISH(req) req_invoke (req)
		146	static void req_destroy (eio_req *grp);
		147	#define EIO_DESTROY(req) req_destroy (req)
108		148
109	enum {	149	enum {
110	FLAG_CANCELLED = 0x01,	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	151	};
112		152
		153	#include "libeio/eio.c"
		154
113	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
115		157
116	enum {	158	static SV *on_next_submit;
117	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
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;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	160	static int max_outstanding;
129	static int respipe [2];
130		161
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif
136		163
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	164	static void req_destroy (aio_req req);
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141	static volatile aio_req reqs, reqe; /* queue start, queue end */
142	static volatile aio_req ress, rese; /* queue start, queue end */
143
144	static void req_invoke (aio_req req);	165	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	166
		167	static void want_poll (void)
		168	{
		169	/* write a dummy byte to the pipe so fh becomes ready */
		170	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		171	}
		172
		173	static void done_poll (void)
		174	{
		175	/* read any signals sent by the worker threads */
		176	char buf [4];
		177	while (respipe_read (respipe [0], buf, 4) == 4)
		178	;
		179	}
146		180
147	/* must be called at most once */	181	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
149	{	183	{
150	if (!req->self)	184	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	203	}
170		204
171	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
172	{	206	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
174	{	208	{
175	int old_len = grp->length;	209	dSP;
176		210
177	if (grp->fh2 && SvOK (grp->fh2))	211	ENTER;
		212	SAVETMPS;
		213	PUSHMARK (SP);
		214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		215	PUTBACK;
		216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		217	SPAGAIN;
		218	FREETMPS;
		219	LEAVE;
		220	}
		221	}
		222
		223	static void req_submit (eio_req *req)
		224	{
		225	eio_submit (req);
		226
		227	if (expect_false (on_next_submit))
		228	{
		229	dSP;
		230	SV *cb = sv_2mortal (on_next_submit);
		231
		232	on_next_submit = 0;
		233
		234	PUSHMARK (SP);
		235	PUTBACK;
		236	call_sv (cb, G_DISCARD | G_EVAL);
		237	}
		238	}
		239
		240	static int req_invoke (eio_req *req)
		241	{
		242	dSP;
		243
		244	if (req->flags & FLAG_SV2_RO_OFF)
		245	SvREADONLY_off (req->sv2);
		246
		247	if (!EIO_CANCELLED (req) && req->callback)
		248	{
		249	ENTER;
		250	SAVETMPS;
		251	PUSHMARK (SP);
		252	EXTEND (SP, 1);
		253
		254	switch (req->type)
178	{	255	{
179	dSP;	256	case EIO_READDIR:
		257	{
		258	SV *rv = &PL_sv_undef;
180		259
181	ENTER;	260	if (req->result >= 0)
182	SAVETMPS;	261	{
183	PUSHMARK (SP);	262	int i;
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	263	char *names = (char *)req->ptr2;
185	PUTBACK;	264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
186	call_sv (grp->fh2, G_VOID | G_EVAL);	265	AV *av = newAV ();
187	SPAGAIN;	266
188	FREETMPS;	267	av_extend (av, req->result - 1);
189	LEAVE;	268
		269	for (i = 0; i < req->result; ++i)
		270	{
		271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		274
		275	if (req->int1 & EIO_READDIR_CUSTOM2)
		276	{
		277	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		278	AV *avent = newAV ();
		279
		280	av_extend (avent, 2);
		281
		282	if (!sv_type [ent->type])
		283	{
		284	sv_type [ent->type] = newSViv (ent->type);
		285	SvREADONLY_on (sv_type [ent->type]);
		286	}
		287
		288	av_store (avent, 0, namesv);
		289	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		290	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		291
		292	av_store (av, i, newRV_noinc ((SV *)avent));
		293	}
		294	else
		295	av_store (av, i, namesv);
		296
		297	++ent;
		298	}
		299	else
		300	{
		301	SV *name = newSVpv (names, 0);
		302	av_store (av, i, name);
		303	names += SvCUR (name) + 1;
		304	}
		305	}
		306
		307	rv = sv_2mortal (newRV_noinc ((SV *)av));
		308	}
		309
		310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		314	}
		315	break;
		316
		317	case EIO_OPEN:
		318	{
		319	/* convert fd to fh */
		320	SV *fh = &PL_sv_undef;
		321
		322	if (req->result >= 0)
		323	{
		324	GV *gv = (GV *)sv_newmortal ();
		325	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		326	char sym [64];
		327	int symlen;
		328
		329	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		330	gv_init (gv, stash, sym, symlen, 0);
		331
		332	symlen = snprintf (
		333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
		344	PUSHs (fh);
		345	}
		346	break;
		347
		348	case EIO_GROUP:
		349	req->int1 = 2; /* mark group as finished */
		350
		351	if (req->sv1)
		352	{
		353	int i;
		354	AV *av = (AV *)req->sv1;
		355
		356	EXTEND (SP, AvFILL (av) + 1);
		357	for (i = 0; i <= AvFILL (av); ++i)
		358	PUSHs (*av_fetch (av, i, 0));
		359	}
		360	break;
		361
		362	case EIO_NOP:
		363	case EIO_BUSY:
		364	break;
		365
		366	case EIO_READLINK:
		367	if (req->result > 0)
		368	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		369	break;
		370
		371	case EIO_STAT:
		372	case EIO_LSTAT:
		373	case EIO_FSTAT:
		374	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		375	PL_laststatval = req->result;
		376	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		377	PUSHs (sv_2mortal (newSViv (req->result)));
		378	break;
		379
		380	case EIO_READ:
		381	{
		382	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		383	*SvEND (req->sv2) = 0;
		384	SvPOK_only (req->sv2);
		385	SvSETMAGIC (req->sv2);
		386	PUSHs (sv_2mortal (newSViv (req->result)));
		387	}
		388	break;
		389
		390	case EIO_DUP2:
		391	if (req->result > 0)
		392	req->result = 0;
		393	/* FALLTHROUGH */
		394
		395	default:
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	break;
190	}	398	}
191		399
192	/* stop if no progress has been made */	400	errno = req->errorno;
193	if (old_len == grp->length)	401
194	{	402	PUTBACK;
195	SvREFCNT_dec (grp->fh2);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
196	grp->fh2 = 0;	404	SPAGAIN;
197	break;	405
198	}	406	FREETMPS;
		407	LEAVE;
		408
		409	PUTBACK;
199	}	410	}
200	}
201		411
202	static void aio_grp_dec (aio_req grp)	412	return !!SvTRUE (ERRSV);
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	}	413	}
216		414
217	static void poll_wait ()
218	{
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
235	FD_ZERO(&rfd);
236	FD_SET(respipe [0], &rfd);
237
238	select (respipe [0] + 1, &rfd, 0, 0, 0);
239	}
240	}
241
242	static void req_invoke (aio_req req)
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)	415	static void req_destroy (aio_req req)
342	{	416	{
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)	417	if (req->self)
358	{	418	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
361	}	421	}
362		422
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	423	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	424	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		426
372	Safefree (req);	427	Safefree (req);
373	}	428	}
374		429
375	static void req_cancel (aio_req req)	430	static void req_cancel_subs (aio_req grp)
376	{	431	{
377	req->flags |= FLAG_CANCELLED;	432	aio_req sub;
378		433
379	if (req->type == REQ_GROUP)	434	if (grp->type != EIO_GROUP)
		435	return;
		436
		437	SvREFCNT_dec (grp->sv2);
		438	grp->sv2 = 0;
		439
		440	eio_grp_cancel (grp);
		441	}
		442
		443	#ifdef USE_SOCKETS_AS_HANDLES
		444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		445	#else
		446	# define TO_SOCKET(x) (x)
		447	#endif
		448
		449	static void
		450	create_respipe (void)
		451	{
		452	int old_readfd = respipe [0];
		453
		454	if (respipe [1] >= 0)
		455	respipe_close (TO_SOCKET (respipe [1]));
		456
		457	#ifdef _WIN32
		458	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		459	#else
		460	if (pipe (respipe))
		461	#endif
		462	croak ("unable to initialize result pipe");
		463
		464	if (old_readfd >= 0)
380	{	465	{
381	aio_req sub;	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		467	croak ("unable to initialize result pipe(2)");
382		468
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	469	respipe_close (respipe [0]);
384	req_cancel (sub);	470	respipe [0] = old_readfd;
385	}	471	}
386	}
387		472
		473	#ifdef _WIN32
		474	int arg = 1;
		475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		477	#else
		478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		480	#endif
		481	croak ("unable to initialize result pipe(3)");
		482
		483	respipe_osf [0] = TO_SOCKET (respipe [0]);
		484	respipe_osf [1] = TO_SOCKET (respipe [1]);
		485	}
		486
		487	static void poll_wait (void)
		488	{
		489	fd_set rfd;
		490
		491	while (eio_nreqs ())
		492	{
		493	int size;
		494
		495	X_LOCK (reslock);
		496	size = res_queue.size;
		497	X_UNLOCK (reslock);
		498
		499	if (size)
		500	return;
		501
		502	etp_maybe_start_thread ();
		503
		504	FD_ZERO (&rfd);
		505	FD_SET (respipe [0], &rfd);
		506
		507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		508	}
		509	}
		510
388	static int poll_cb ()	511	static int poll_cb (void)
389	{	512	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	513	for (;;)
396	{	514	{
397	pthread_mutex_lock (&reslock);	515	int res = eio_poll ();
398	req = ress;
399		516
400	if (req)	517	if (res > 0)
401	{
402	ress = req->next;
403
404	if (!ress)
405	{
406	/* read any signals sent by the worker threads */
407	char buf [32];
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}
413	}
414
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;	518	croak (0);
419		519
420	--nreqs;	520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
421		522
422	if (req->type == REQ_QUIT)	523	poll_wait ();
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	524	}
451
452	return count;
453	}	525	}
454		526
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)	527	static void atfork_child (void)
458	{	528	{
459	sigset_t fullsigset, oldsigset;	529	create_respipe ();
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}	530	}
475		531
476	static void req_send (aio_req req)	532	static SV *
		533	get_cb (SV *cb_sv)
477	{	534	{
478	while (started < wanted && nreqs >= started)	535	HV *st;
479	start_thread ();	536	GV *gvp;
		537	CV *cv;
480		538
481	++nreqs;	539	if (!SvOK (cb_sv))
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}
544
545	static void create_pipe ()
546	{
547	if (pipe (respipe))
548	croak ("unable to initialize result pipe");
549
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551	croak ("cannot set result pipe to nonblocking mode");
552
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554	croak ("cannot set result pipe to nonblocking mode");
555	}
556
557	/*****************************************************************************/
558	/* work around various missing functions */
559
560	#if !HAVE_PREADWRITE
561	# define pread aio_pread
562	# define pwrite aio_pwrite
563
564	/*
565	* make our pread/pwrite safe against themselves, but not against
566	* normal read/write by using a mutex. slows down execution a lot,
567	* but that's your problem, not mine.
568	*/
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{
573	ssize_t res;
574	off_t ooffset;
575
576	pthread_mutex_lock (&preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582
583	return res;
584	}
585
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{
588	ssize_t res;
589	off_t ooffset;
590
591	pthread_mutex_lock (&preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597
598	return res;
599	}
600	#endif
601
602	#if !HAVE_FDATASYNC
603	# define fdatasync fsync
604	#endif
605
606	#if !HAVE_READAHEAD
607	# define readahead aio_readahead
608
609	static ssize_t readahead (int fd, off_t offset, size_t count)
610	{
611	dBUF;
612
613	while (count > 0)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616
617	pread (fd, aio_buf, len, offset);
618	offset += len;
619	count -= len;
620	}
621
622	fBUF;
623
624	errno = 0;
625	}
626	#endif
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
658	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
660	{
661	ssize_t res;
662
663	if (!count)
664	return 0;	540	return 0;
665		541
666	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669		543
670	# elif __freebsd	544	if (!cv)
671	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
672	* Of course, the freebsd sendfile is a dire hack with no thoughts
673	* wasted on making it similar to other I/O functions.
674	*/
675	{
676	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		546
679	if (res < 0 && sbytes)	547	return (SV *)cv;
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
681	res = sbytes;
682	}
683
684	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);
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
704	#else
705	res = -1;
706	errno = ENOSYS;
707	#endif
708
709	if (res < 0
710	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711	#if __solaris
712	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
713	#endif
714	)
715	)
716	{
717	/* emulate sendfile. this is a major pain in the ass */
718	dBUF;
719
720	res = 0;
721
722	while (count)
723	{
724	ssize_t cnt;
725
726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728	if (cnt <= 0)
729	{
730	if (cnt && !res) res = -1;
731	break;
732	}
733
734	cnt = write (ofd, aio_buf, cnt);
735
736	if (cnt <= 0)
737	{
738	if (cnt && !res) res = -1;
739	break;
740	}
741
742	offset += cnt;
743	res += cnt;
744	count -= cnt;
745	}
746
747	fBUF;
748	}
749
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;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831
832	for (;;)
833	{
834	req = reqs;
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841
842	if (req)
843	break;
844
845	pthread_cond_wait (&reqwait, &reqlock);
846	}
847
848	pthread_mutex_unlock (&reqlock);
849
850	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852
853	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)
855	{
856	case REQ_READ: req->result = pread (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;
858
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;
868	case REQ_UNLINK: req->result = unlink (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;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874	case REQ_FDATASYNC: req->result = fdatasync (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;
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:
890	case REQ_QUIT:
891	break;
892
893	default:
894	req->result = ENOSYS;
895	break;
896	}
897
898	req->errorno = errno;
899
900	pthread_mutex_lock (&reslock);
901
902	req->next = 0;
903
904	if (rese)
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);
915	}
916
917	pthread_mutex_unlock (&reslock);
918	}
919	while (type != REQ_QUIT);
920
921	return 0;
922	}
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	}	548	}
980		549
981	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
982	aio_req req; \	552	aio_req req; \
983	int req_pri = next_pri; \	553	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
985	\	555	\
986	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
987	croak ("callback must be undef or of reference type"); \
988	\	557	\
989	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
990	if (!req) \	559	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
992	\	561	\
993	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
994	req->pri = req_pri	563	req->pri = req_pri
995		564
996	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
997	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
998	\	569	\
999	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001		572
		573	static int
		574	extract_fd (SV *fh, int wr)
		575	{
		576	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		577
		578	if (fd < 0)
		579	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		580
		581	return fd;
		582	}
		583
1002	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1003		585
1004	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1005		587
1006	BOOT:	588	BOOT:
1007	{	589	{
		590	static const struct {
		591	const char *name;
		592	IV iv;
		593	} *civ, const_iv[] = {
		594	# define const_iv(name, value) { # name, (IV) value },
		595	# define const_eio(name) { # name, (IV) EIO_ ## name },
		596	const_iv (EXDEV , EXDEV)
		597	const_iv (ENOSYS , ENOSYS)
		598	const_iv (O_RDONLY, O_RDONLY)
		599	const_iv (O_WRONLY, O_WRONLY)
		600	const_iv (O_CREAT , O_CREAT)
		601	const_iv (O_TRUNC , O_TRUNC)
		602	#ifndef _WIN32
		603	const_iv (S_IFIFO , S_IFIFO)
		604	#endif
		605	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		606	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		607	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		608	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		609	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		610	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		611
		612	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		613	const_eio (SYNC_FILE_RANGE_WRITE)
		614	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		615
		616	const_eio (READDIR_DENTS)
		617	const_eio (READDIR_DIRS_FIRST)
		618	const_eio (READDIR_STAT_ORDER)
		619	const_eio (READDIR_FOUND_UNKNOWN)
		620
		621	const_eio (DT_UNKNOWN)
		622	const_eio (DT_FIFO)
		623	const_eio (DT_CHR)
		624	const_eio (DT_DIR)
		625	const_eio (DT_BLK)
		626	const_eio (DT_REG)
		627	const_eio (DT_LNK)
		628	const_eio (DT_SOCK)
		629	const_eio (DT_WHT)
		630	};
		631
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	632	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		633
		634	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		635	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		636
1013	create_pipe ();	637	create_respipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016		638
		639	if (eio_init (want_poll, done_poll) < 0)
		640	croak ("IO::AIO: unable to initialise eio library");
		641
		642	/* atfork child called in fifo order, so before eio's handler */
		643	X_THREAD_ATFORK (0, 0, atfork_child);
		644	}
		645
1017	void	646	void
1018	min_parallel (nthreads)	647	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	648	PROTOTYPE: $
		649	CODE:
		650	eio_set_max_poll_reqs (nreqs);
1021		651
1022	void	652	void
1023	max_parallel (nthreads)	653	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	654	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	655	CODE:
1032	RETVAL = max_outstanding;	656	eio_set_max_poll_time (nseconds);
		657
		658	void
		659	min_parallel (int nthreads)
		660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
		663
		664	void
		665	max_parallel (int nthreads)
		666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
		669
		670	void
		671	max_idle (int nthreads)
		672	PROTOTYPE: $
		673	CODE:
		674	eio_set_max_idle (nthreads);
		675
		676	void
		677	max_outstanding (int maxreqs)
		678	PROTOTYPE: $
		679	CODE:
1033	max_outstanding = nreqs;	680	max_outstanding = maxreqs;
1034		681
1035	void	682	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1042	PPCODE:	685	PPCODE:
1043	{	686	{
1044	dREQ;	687	dREQ;
1045		688
1046	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	692	req->int1 = flags;
1050	req->mode = mode;	693	req->int2 = mode;
1051		694
1052	REQ_SEND;	695	REQ_SEND;
1053	}	696	}
1054		697
1055	void	698	void
1056	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1060	ALIAS:	701	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	704	PPCODE:
1065	{	705	{
		706	int fd = extract_fd (fh, 0);
1066	dREQ;	707	dREQ;
1067		708
1068	req->type = ix;	709	req->type = ix;
1069	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1071		712
1072	REQ_SEND (req);	713	REQ_SEND (req);
1073	}	714	}
1074		715
1075	void	716	void
		717	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		718	PROTOTYPE: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	765	ALIAS:
1084	aio_read = REQ_READ	766	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1087	PPCODE:	769	PPCODE:
1088	{	770	{
1089	aio_req req;
1090	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1092		774	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		775
1096	if (dataoffset < 0)	776	if (dataoffset < 0)
1097	dataoffset += svlen;	777	dataoffset += svlen;
1098		778
1099	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1101		781
1102	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1103	{	783	{
1104	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1107	}	787	}
1108	else	788	else
1109	{	789	{
1110	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1111	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	793	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		794
1117	{	795	{
1118	dREQ;	796	dREQ;
1119		797
1120	req->type = ix;	798	req->type = ix;
1121	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	802	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
		805	req->stroffset = dataoffset;
1128		806
1129	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1130	{	808	{
1131	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	810	req->flags |= FLAG_SV2_RO_OFF;
1133	}	811	}
1134		812
1135	REQ_SEND;	813	REQ_SEND;
1136	}	814	}
1137	}	815	}
1138		816
1139	void	817	void
		818	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		819	PROTOTYPE: $$;$
		820	PPCODE:
		821	{
		822	SV *data;
		823	dREQ;
		824
		825	req->type = EIO_READLINK;
		826	req->sv1 = newSVsv (path);
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828
		829	REQ_SEND;
		830	}
		831
		832	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	833	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1147	PPCODE:	835	PPCODE:
1148	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1149	dREQ;	839	dREQ;
1150		840
1151	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1156	req->offset = in_offset;	846	req->offs = in_offset;
1157	req->length = length;	847	req->size = length;
1158		848
1159	REQ_SEND;	849	REQ_SEND;
1160	}	850	}
1161		851
1162	void	852	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1169	PPCODE:	855	PPCODE:
1170	{	856	{
		857	int fd = extract_fd (fh, 0);
1171	dREQ;	858	dREQ;
1172		859
1173	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1176	req->offset = offset;	863	req->offs = offset;
1177	req->length = length;	864	req->size = length;
1178		865
1179	REQ_SEND;	866	REQ_SEND;
1180	}	867	}
1181		868
1182	void	869	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	871	ALIAS:
1187	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1189	PPCODE:	874	PPCODE:
1190	{	875	{
1191	dREQ;	876	dREQ;
1192		877
1193	New (0, req->statdata, 1, Stat_t);	878	req->sv1 = newSVsv (fh_or_path);
1194	if (!req->statdata)
1195	{
1196	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");
1198	}
1199		879
1200	if (SvPOK (fh_or_path))	880	if (SvPOK (req->sv1))
1201	{	881	{
1202	req->type = ix;	882	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	884	}
1206	else	885	else
1207	{	886	{
1208	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	889	}
1212		890
1213	REQ_SEND;	891	REQ_SEND;
1214	}	892	}
1215		893
1216	void	894	void
		895	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		896	PPCODE:
		897	{
		898	dREQ;
		899
		900	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		901	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		902	req->sv1 = newSVsv (fh_or_path);
		903
		904	if (SvPOK (req->sv1))
		905	{
		906	req->type = EIO_UTIME;
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908	}
		909	else
		910	{
		911	req->type = EIO_FUTIME;
		912	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		913	}
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		920	PPCODE:
		921	{
		922	dREQ;
		923
		924	req->sv1 = newSVsv (fh_or_path);
		925	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		926
		927	if (SvPOK (req->sv1))
		928	{
		929	req->type = EIO_TRUNCATE;
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	}
		932	else
		933	{
		934	req->type = EIO_FTRUNCATE;
		935	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		936	}
		937
		938	REQ_SEND;
		939	}
		940
		941	void
		942	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		943	ALIAS:
		944	aio_chmod = EIO_CHMOD
		945	aio_mkdir = EIO_MKDIR
		946	PPCODE:
		947	{
		948	dREQ;
		949
		950	req->int2 = mode;
		951	req->sv1 = newSVsv (fh_or_path);
		952
		953	if (SvPOK (req->sv1))
		954	{
		955	req->type = ix;
		956	req->ptr1 = SvPVbyte_nolen (req->sv1);
		957	}
		958	else
		959	{
		960	req->type = EIO_FCHMOD;
		961	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		962	}
		963
		964	REQ_SEND;
		965	}
		966
		967	void
		968	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		969	PPCODE:
		970	{
		971	dREQ;
		972
		973	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		974	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		975	req->sv1 = newSVsv (fh_or_path);
		976
		977	if (SvPOK (req->sv1))
		978	{
		979	req->type = EIO_CHOWN;
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	}
		982	else
		983	{
		984	req->type = EIO_FCHOWN;
		985	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		986	}
		987
		988	REQ_SEND;
		989	}
		990
		991	void
		992	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		993	PPCODE:
		994	{
		995	dREQ;
		996
		997	req->type = EIO_READDIR;
		998	req->sv1 = newSVsv (pathname);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1001
		1002	if (flags & EIO_READDIR_DENTS)
		1003	req->int1 |= EIO_READDIR_CUSTOM2;
		1004
		1005	REQ_SEND;
		1006	}
		1007
		1008	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1010	ALIAS:
1221	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1224	PPCODE:	1014	PPCODE:
1225	{	1015	{
1226	dREQ;	1016	dREQ;
1227		1017
1228	req->type = ix;	1018	req->type = ix;
1229	req->data = newSVsv (pathname);	1019	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1020	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1021
1232	REQ_SEND;	1022	REQ_SEND;
1233	}	1023	}
1234		1024
1235	void	1025	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1027	ALIAS:
1241	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1242	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1243	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1244	PPCODE:	1031	PPCODE:
1245	{	1032	{
1246	dREQ;	1033	dREQ;
1247		1034
1248	req->type = ix;	1035	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	1038	req->sv2 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1253		1040
1254	REQ_SEND;	1041	REQ_SEND;
1255	}	1042	}
1256		1043
1257	void	1044	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1046	PPCODE:
1262	{	1047	{
1263	dREQ;	1048	dREQ;
1264		1049
1265	req->type = REQ_SLEEP;	1050	req->type = EIO_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1051	req->sv1 = newSVsv (pathname);
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1268		1053	req->int2 = (mode_t)mode;
		1054	req->offs = dev;
		1055
1269	REQ_SEND;	1056	REQ_SEND;
1270	}	1057	}
1271		1058
1272	void	1059	void
		1060	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
		1065	req->type = EIO_BUSY;
		1066	req->nv1 = delay < 0. ? 0. : delay;
		1067
		1068	REQ_SEND;
		1069	}
		1070
		1071	void
1273	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1276	PPCODE:	1074	PPCODE:
1277	{	1075	{
1278	dREQ;	1076	dREQ;
1279		1077
1280	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
		1079
1281	req_send (req);	1080	req_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	1082	}
1285		1083
1286	void	1084	void
1287	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1289	PPCODE:	1089	PPCODE:
1290	{	1090	{
1291	dREQ;	1091	dREQ;
1292		1092
1293	req->type = REQ_NOP;	1093	req->type = ix;
1294		1094
1295	REQ_SEND;	1095	REQ_SEND;
1296	}	1096	}
1297		1097
1298	#if 0	1098	int
1299		1099	aioreq_pri (int pri = 0)
1300	void	1100	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1101	CODE:
		1102	RETVAL = next_pri;
		1103	if (items > 0)
		1104	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
		1108	}
		1109	OUTPUT:
		1110	RETVAL
1306		1111
1307	#endif	1112	void
		1113	aioreq_nice (int nice = 0)
		1114	CODE:
		1115	nice = next_pri - nice;
		1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1118	next_pri = nice;
1308		1119
1309	void	1120	void
1310	flush ()	1121	flush ()
1311	PROTOTYPE:	1122	PROTOTYPE:
1312	CODE:	1123	CODE:
1313	while (nreqs)	1124	while (eio_nreqs ())
1314	{	1125	{
1315	poll_wait ();	1126	poll_wait ();
1316	poll_cb ();	1127	poll_cb ();
1317	}	1128	}
1318		1129
1319	void	1130	int
1320	poll()	1131	poll()
1321	PROTOTYPE:	1132	PROTOTYPE:
1322	CODE:	1133	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1134	poll_wait ();
1326	poll_cb ();	1135	RETVAL = poll_cb ();
1327	}	1136	OUTPUT:
		1137	RETVAL
1328		1138
1329	int	1139	int
1330	poll_fileno()	1140	poll_fileno()
1331	PROTOTYPE:	1141	PROTOTYPE:
1332	CODE:	1142	CODE:
…		…
1344		1154
1345	void	1155	void
1346	poll_wait()	1156	poll_wait()
1347	PROTOTYPE:	1157	PROTOTYPE:
1348	CODE:	1158	CODE:
1349	if (nreqs)
1350	poll_wait ();	1159	poll_wait ();
1351		1160
1352	int	1161	int
1353	nreqs()	1162	nreqs()
1354	PROTOTYPE:	1163	PROTOTYPE:
1355	CODE:	1164	CODE:
1356	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1357	OUTPUT:	1166	OUTPUT:
1358	RETVAL	1167	RETVAL
1359		1168
		1169	int
		1170	nready()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_nready ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	npending()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_npending ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	nthreads()
		1187	PROTOTYPE:
		1188	CODE:
		1189	RETVAL = eio_nthreads ();
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	int
		1194	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1195	PROTOTYPE: $$$$
		1196	CODE:
		1197	{
		1198	#if _XOPEN_SOURCE >= 600
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	}
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	ssize_t
		1208	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1209	PROTOTYPE: $$$$
		1210	CODE:
		1211	eio_sendfile_sync (ofh, ifh, offset, count);
		1212
		1213	void _on_next_submit (SV *cb)
		1214	CODE:
		1215	SvREFCNT_dec (on_next_submit);
		1216	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1217
1360	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1361		1219
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1221
1364	void	1222	void
1365	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1224	CODE:
1368	req_cancel (req);	1225	eio_cancel (req);
1369		1226
1370	void	1227	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1372	CODE:	1229	PPCODE:
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1233
		1234	if (items > 1)
		1235	{
		1236	SV *cb_cv = get_cb (callback);
		1237
1373	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1374	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1375		1242
1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1377		1244
1378	void	1245	void
1379	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1380	PPCODE:	1247	PPCODE:
1381	{	1248	{
1382	int i;	1249	int i;
1383	aio_req req;
1384		1250
1385	if (grp->fd == 2)	1251	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1252	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1253
1388	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1389	{	1255	{
		1256	aio_req req;
		1257
1390	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1392		1260
1393	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1394		1262
1395	if (req)	1263	if (req)
1396	{	1264	eio_grp_add (grp, req);
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	}	1265	}
1408	}
1409	}	1266	}
		1267
		1268	void
		1269	cancel_subs (aio_req_ornot req)
		1270	CODE:
		1271	req_cancel_subs (req);
1410		1272
1411	void	1273	void
1412	result (aio_req grp, ...)	1274	result (aio_req grp, ...)
1413	CODE:	1275	CODE:
1414	{	1276	{
1415	int i;	1277	int i;
		1278	AV *av;
		1279
		1280	grp->errorno = errno;
		1281
1416	AV *av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1417		1284
1418	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1420		1287
1421	SvREFCNT_dec (grp->data);	1288	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1289	grp->sv1 = (SV *)av;
1423	}	1290	}
1424		1291
1425	void	1292	void
		1293	errno (aio_req grp, int errorno = errno)
		1294	CODE:
		1295	grp->errorno = errorno;
		1296
		1297	void
1426	feed_limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1427	CODE:	1299	CODE:
1428	grp->fd2 = limit;	1300	eio_grp_limit (grp, limit);
1429	aio_grp_feed (grp);
1430		1301
1431	void	1302	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1304	CODE:
1434	{	1305	{
1435	SvREFCNT_dec (grp->fh2);	1306	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1437		1309
1438	if (grp->fd2 <= 0)	1310	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1311	grp->int2 = 2;
1440		1312
1441	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1442	}	1314	}
1443		1315

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