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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.152 by root, Tue Jul 14 00:32:27 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"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
23	#include <limits.h>	16	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	17	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	18	#include <sched.h>
28		19
29	#if HAVE_SENDFILE	20	/* perl namespace pollution */
30	# if __linux	21	#undef VERSION
31	# include <sys/sendfile.h>
32	# elif __freebsd
33	# include <sys/socket.h>
34	# include <sys/uio.h>
35	# elif __hpux
36	# include <sys/socket.h>
37	# elif __solaris /* not yet */
38	# include <sys/sendfile.h>
39	# else
40	# error sendfile support requested but not available
41	# endif
42	#endif
43		22
44	/* used for struct dirent, AIX doesn't provide it */	23	#ifdef _WIN32
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif
48		24
49	#if __ia64	25	# define EIO_STRUCT_DIRENT Direntry_t
50	# define STACKSIZE 65536	26	# undef malloc
		27	# undef free
		28
		29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
51	#else	61	#else
52	# define STACKSIZE 8192
53	#endif
54		62
55	enum {	63	# include <sys/time.h>
56	REQ_QUIT,	64	# include <sys/select.h>
57	REQ_OPEN, REQ_CLOSE,	65	# include <unistd.h>
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	66	# include <utime.h>
59	REQ_SENDFILE,	67	# include <signal.h>
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	68	# define EIO_STRUCT_DIRENT struct dirent
61	REQ_FSYNC, REQ_FDATASYNC,	69
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	70	#endif
63	REQ_READDIR,	71
64	REQ_LINK, REQ_SYMLINK,	72	/* perl stupidly overrides readdir and maybe others */
65	REQ_GROUP, REQ_NOP,	73	/* with thread-unsafe versions, imagine that :( */
66	REQ_SLEEP,	74	#undef readdir
67	};	75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
		89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	static HV *stash;
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
68		108
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		111
72	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;	113	SV *callback; \
77	SV *fh, *fh2;	114	SV *sv1, *sv2; \
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;	115	STRLEN stroffset; \
85	int type;	116	SV *self;
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89		117
90	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
91	unsigned char pri;
92		119
93	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
95	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
96		151
97	enum {	152	enum {
98	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	154	};
100		155
		156	#include "libeio/eio.c"
		157
101	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
103		160
104	enum {	161	static SV *on_next_submit;
105	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	163	static int max_outstanding;
117	static int respipe [2];
118		164
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		166
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	167	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	168	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
134		183
135	/* must be called at most once */	184	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
137	{	186	{
138	if (!req->self)	187	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	206	}
158		207
159	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
160	{	209	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
162	{	211	{
163	int old_len = grp->length;	212	dSP;
164		213
165	if (grp->fh2 && SvOK (grp->fh2))	214	ENTER;
		215	SAVETMPS;
		216	PUSHMARK (SP);
		217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		218	PUTBACK;
		219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		220	SPAGAIN;
		221	FREETMPS;
		222	LEAVE;
		223	}
		224	}
		225
		226	static void req_submit (eio_req *req)
		227	{
		228	eio_submit (req);
		229
		230	if (expect_false (on_next_submit))
		231	{
		232	dSP;
		233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
		240	}
		241	}
		242
		243	static int req_invoke (eio_req *req)
		244	{
		245	dSP;
		246
		247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
		251	{
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
166	{	258	{
167	dSP;	259	case EIO_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
168		262
169	ENTER;	263	if (req->result >= 0)
170	SAVETMPS;	264	{
171	PUSHMARK (SP);	265	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	266	char *names = (char *)req->ptr2;
173	PUTBACK;	267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
174	call_sv (grp->fh2, G_VOID | G_EVAL);	268	AV *av = newAV ();
175	SPAGAIN;	269
176	FREETMPS;	270	av_extend (av, req->result - 1);
177	LEAVE;	271
		272	for (i = 0; i < req->result; ++i)
		273	{
		274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
		298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
		306	names += SvCUR (name) + 1;
		307	}
		308	}
		309
		310	rv = sv_2mortal (newRV_noinc ((SV *)av));
		311	}
		312
		313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		317	}
		318	break;
		319
		320	case EIO_OPEN:
		321	{
		322	/* convert fd to fh */
		323	SV *fh = &PL_sv_undef;
		324
		325	if (req->result >= 0)
		326	{
		327	GV *gv = (GV *)sv_newmortal ();
		328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
		334
		335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
		347	PUSHs (fh);
		348	}
		349	break;
		350
		351	case EIO_GROUP:
		352	req->int1 = 2; /* mark group as finished */
		353
		354	if (req->sv1)
		355	{
		356	int i;
		357	AV *av = (AV *)req->sv1;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case EIO_NOP:
		366	case EIO_BUSY:
		367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
		397
		398	default:
		399	PUSHs (sv_2mortal (newSViv (req->result)));
		400	break;
178	}	401	}
179		402
180	/* stop if no progress has been made */	403	errno = req->errorno;
181	if (old_len == grp->length)	404
182	{	405	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	407	SPAGAIN;
185	break;	408
186	}	409	FREETMPS;
		410	LEAVE;
		411
		412	PUTBACK;
187	}	413	}
188	}
189		414
190	static void aio_grp_dec (aio_req grp)	415	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	416	}
204		417
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213	pthread_mutex_lock (&reslock);
214	#endif
215	req = ress;
216	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217	pthread_mutex_unlock (&reslock);
218	#endif
219
220	if (req)
221	return;
222
223	FD_ZERO(&rfd);
224	FD_SET(respipe [0], &rfd);
225
226	select (respipe [0] + 1, &rfd, 0, 0, 0);
227	}
228	}
229
230	static void req_invoke (aio_req req)
231	{
232	dSP;
233	int errorno = errno;
234
235	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236	return;
237
238	errno = req->errorno;
239
240	ENTER;
241	SAVETMPS;
242	PUSHMARK (SP);
243	EXTEND (SP, 1);
244
245	switch (req->type)
246	{
247	case REQ_READDIR:
248	{
249	SV *rv = &PL_sv_undef;
250
251	if (req->result >= 0)
252	{
253	char *buf = req->data2ptr;
254	AV *av = newAV ();
255
256	while (req->result)
257	{
258	SV *sv = newSVpv (buf, 0);
259
260	av_push (av, sv);
261	buf += SvCUR (sv) + 1;
262	req->result--;
263	}
264
265	rv = sv_2mortal (newRV_noinc ((SV *)av));
266	}
267
268	PUSHs (rv);
269	}
270	break;
271
272	case REQ_OPEN:
273	{
274	/* convert fd to fh */
275	SV *fh;
276
277	PUSHs (sv_2mortal (newSViv (req->result)));
278	PUTBACK;
279	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280	SPAGAIN;
281
282	fh = SvREFCNT_inc (POPs);
283
284	PUSHMARK (SP);
285	XPUSHs (sv_2mortal (fh));
286	}
287	break;
288
289	case REQ_GROUP:
290	req->fd = 2; /* mark group as finished */
291
292	if (req->data)
293	{
294	int i;
295	AV *av = (AV *)req->data;
296
297	EXTEND (SP, AvFILL (av) + 1);
298	for (i = 0; i <= AvFILL (av); ++i)
299	PUSHs (*av_fetch (av, i, 0));
300	}
301	break;
302
303	case REQ_NOP:
304	case REQ_SLEEP:
305	break;
306
307	default:
308	PUSHs (sv_2mortal (newSViv (req->result)));
309	break;
310	}
311
312
313	PUTBACK;
314	call_sv (req->callback, G_VOID | G_EVAL);
315	SPAGAIN;
316
317	FREETMPS;
318	LEAVE;
319
320	errno = errorno;
321
322	if (SvTRUE (ERRSV))
323	{
324	req_free (req);
325	croak (0);
326	}
327	}
328
329	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
330	{	419	{
331	if (req->grp)
332	{
333	aio_req grp = req->grp;
334
335	/* unlink request */
336	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339	if (grp->grp_first == req)
340	grp->grp_first = req->grp_next;
341
342	aio_grp_dec (grp);
343	}
344
345	if (req->self)	420	if (req->self)
346	{	421	{
347	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
348	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
349	}	424	}
350		425
351	SvREFCNT_dec (req->data);
352	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
353	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
354	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
355	Safefree (req->statdata);
356
357	if (req->type == REQ_READDIR && req->result >= 0)
358	free (req->data2ptr);
359		429
360	Safefree (req);	430	Safefree (req);
361	}	431	}
362		432
363	static void req_cancel (aio_req req)	433	static void req_cancel_subs (aio_req grp)
364	{	434	{
365	req->flags |= FLAG_CANCELLED;	435	aio_req sub;
366		436
367	if (req->type == REQ_GROUP)	437	if (grp->type != EIO_GROUP)
		438	return;
		439
		440	SvREFCNT_dec (grp->sv2);
		441	grp->sv2 = 0;
		442
		443	eio_grp_cancel (grp);
		444	}
		445
		446	#ifdef USE_SOCKETS_AS_HANDLES
		447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
		451
		452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
		456
		457	if (respipe [1] >= 0)
		458	respipe_close (TO_SOCKET (respipe [1]));
		459
		460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
368	{	468	{
369	aio_req sub;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		470	croak ("unable to initialize result pipe(2)");
370		471
371	for (sub = req->grp_first; sub; sub = sub->grp_next)	472	respipe_close (respipe [0]);
372	req_cancel (sub);	473	respipe [0] = old_readfd;
373	}	474	}
374	}
375		475
		476	#ifdef _WIN32
		477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
		485
		486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
		489
		490	static void poll_wait (void)
		491	{
		492	fd_set rfd;
		493
		494	while (eio_nreqs ())
		495	{
		496	int size;
		497
		498	X_LOCK (reslock);
		499	size = res_queue.size;
		500	X_UNLOCK (reslock);
		501
		502	if (size)
		503	return;
		504
		505	etp_maybe_start_thread ();
		506
		507	FD_ZERO (&rfd);
		508	FD_SET (respipe [0], &rfd);
		509
		510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		511	}
		512	}
		513
376	static int poll_cb ()	514	static int poll_cb (void)
377	{	515	{
378	dSP;
379	int count = 0;
380	int do_croak = 0;
381	aio_req req;
382
383	for (;;)	516	for (;;)
384	{	517	{
385	pthread_mutex_lock (&reslock);	518	int res = eio_poll ();
386	req = ress;
387		519
388	if (req)	520	if (res > 0)
389	{
390	ress = req->next;
391
392	if (!ress)
393	{
394	/* read any signals sent by the worker threads */
395	char buf [32];
396	while (read (respipe [0], buf, 32) == 32)
397	;
398
399	rese = 0;
400	}
401	}
402
403	pthread_mutex_unlock (&reslock);
404
405	if (!req)
406	break;	521	croak (0);
407		522
408	--nreqs;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
409		525
410	if (req->type == REQ_QUIT)	526	poll_wait ();
411	started--;
412	else if (req->type == REQ_GROUP && req->length)
413	{
414	req->fd = 1; /* mark request as delayed */
415	continue;
416	}
417	else
418	{
419	if (req->type == REQ_READ)
420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421
422	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
423	SvREADONLY_off (req->data);
424
425	if (req->statdata)
426	{
427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428	PL_laststatval = req->result;
429	PL_statcache = *(req->statdata);
430	}
431
432	req_invoke (req);
433
434	count++;
435	}
436
437	req_free (req);
438	}	527	}
439
440	return count;
441	}
442
443	static void *aio_proc(void *arg);
444
445	static void start_thread (void)
446	{
447	sigset_t fullsigset, oldsigset;
448	pthread_t tid;
449	pthread_attr_t attr;
450
451	pthread_attr_init (&attr);
452	pthread_attr_setstacksize (&attr, STACKSIZE);
453	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455	sigfillset (&fullsigset);
456	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459	started++;
460
461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
462	}
463
464	static void req_send (aio_req req)
465	{
466	while (started < wanted && nreqs >= started)
467	start_thread ();
468
469	++nreqs;
470
471	pthread_mutex_lock (&reqlock);
472
473	req->next = 0;
474
475	if (reqe)
476	{
477	reqe->next = req;
478	reqe = req;
479	}
480	else
481	reqe = reqs = req;
482
483	pthread_cond_signal (&reqwait);
484	pthread_mutex_unlock (&reqlock);
485
486	if (nreqs > max_outstanding)
487	for (;;)
488	{
489	poll_cb ();
490
491	if (nreqs <= max_outstanding)
492	break;
493
494	poll_wait ();
495	}
496	}
497
498	static void end_thread (void)
499	{
500	aio_req req;
501	Newz (0, req, 1, aio_cb);
502	req->type = REQ_QUIT;
503
504	req_send (req);
505	}
506
507	static void min_parallel (int nthreads)
508	{
509	if (wanted < nthreads)
510	wanted = nthreads;
511	}
512
513	static void max_parallel (int nthreads)
514	{
515	int cur = started;
516
517	if (wanted > nthreads)
518	wanted = nthreads;
519
520	while (cur > wanted)
521	{
522	end_thread ();
523	cur--;
524	}
525
526	while (started > wanted)
527	{
528	poll_wait ();
529	poll_cb ();
530	}
531	}
532
533	static void create_pipe ()
534	{
535	if (pipe (respipe))
536	croak ("unable to initialize result pipe");
537
538	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539	croak ("cannot set result pipe to nonblocking mode");
540
541	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542	croak ("cannot set result pipe to nonblocking mode");
543	}
544
545	/*****************************************************************************/
546	/* work around various missing functions */
547
548	#if !HAVE_PREADWRITE
549	# define pread aio_pread
550	# define pwrite aio_pwrite
551
552	/*
553	* make our pread/pwrite safe against themselves, but not against
554	* normal read/write by using a mutex. slows down execution a lot,
555	* but that's your problem, not mine.
556	*/
557	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
558
559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560	{
561	ssize_t res;
562	off_t ooffset;
563
564	pthread_mutex_lock (&preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = read (fd, buf, count);
568	lseek (fd, ooffset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570
571	return res;
572	}
573
574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575	{
576	ssize_t res;
577	off_t ooffset;
578
579	pthread_mutex_lock (&preadwritelock);
580	ooffset = lseek (fd, 0, SEEK_CUR);
581	lseek (fd, offset, SEEK_SET);
582	res = write (fd, buf, count);
583	lseek (fd, offset, SEEK_SET);
584	pthread_mutex_unlock (&preadwritelock);
585
586	return res;
587	}
588	#endif
589
590	#if !HAVE_FDATASYNC
591	# define fdatasync fsync
592	#endif
593
594	#if !HAVE_READAHEAD
595	# define readahead aio_readahead
596
597	static ssize_t readahead (int fd, off_t offset, size_t count)
598	{
599	char readahead_buf[4096];
600
601	while (count > 0)
602	{
603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
604
605	pread (fd, readahead_buf, len, offset);
606	offset += len;
607	count -= len;
608	}
609
610	errno = 0;
611	}
612	#endif
613
614	#if !HAVE_READDIR_R
615	# define readdir_r aio_readdir_r
616
617	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
618
619	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620	{
621	struct dirent *e;
622	int errorno;
623
624	pthread_mutex_lock (&readdirlock);
625
626	e = readdir (dirp);
627	errorno = errno;
628
629	if (e)
630	{
631	*res = ent;
632	strcpy (ent->d_name, e->d_name);
633	}
634	else
635	*res = 0;
636
637	pthread_mutex_unlock (&readdirlock);
638
639	errno = errorno;
640	return e ? 0 : -1;
641	}
642	#endif
643
644	/* sendfile always needs emulation */
645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
646	{
647	ssize_t res;
648
649	if (!count)
650	return 0;
651
652	#if HAVE_SENDFILE
653	# if __linux
654	res = sendfile (ofd, ifd, &offset, count);
655
656	# elif __freebsd
657	/*
658	* Of course, the freebsd sendfile is a dire hack with no thoughts
659	* wasted on making it similar to other I/O functions.
660	*/
661	{
662	off_t sbytes;
663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664
665	if (res < 0 && sbytes)
666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
667	res = sbytes;
668	}
669
670	# elif __hpux
671	res = sendfile (ofd, ifd, offset, count, 0, 0);
672
673	# elif __solaris
674	{
675	struct sendfilevec vec;
676	size_t sbytes;
677
678	vec.sfv_fd = ifd;
679	vec.sfv_flag = 0;
680	vec.sfv_off = offset;
681	vec.sfv_len = count;
682
683	res = sendfilev (ofd, &vec, 1, &sbytes);
684
685	if (res < 0 && sbytes)
686	res = sbytes;
687	}
688
689	# endif
690	#else
691	res = -1;
692	errno = ENOSYS;
693	#endif
694
695	if (res < 0
696	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
697	#if __solaris
698	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
699	#endif
700	)
701	)
702	{
703	/* emulate sendfile. this is a major pain in the ass */
704	char buf[4096];
705	res = 0;
706
707	while (count)
708	{
709	ssize_t cnt;
710
711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
712
713	if (cnt <= 0)
714	{
715	if (cnt && !res) res = -1;
716	break;
717	}
718
719	cnt = write (ofd, buf, cnt);
720
721	if (cnt <= 0)
722	{
723	if (cnt && !res) res = -1;
724	break;
725	}
726
727	offset += cnt;
728	res += cnt;
729	count -= cnt;
730	}
731	}
732
733	return res;
734	}
735
736	/* read a full directory */
737	static int scandir_ (const char *path, void **namesp)
738	{
739	DIR *dirp = opendir (path);
740	union
741	{
742	struct dirent d;
743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744	} u;
745	struct dirent *entp;
746	char *name, *names;
747	int memlen = 4096;
748	int memofs = 0;
749	int res = 0;
750	int errorno;
751
752	if (!dirp)
753	return -1;
754
755	names = malloc (memlen);
756
757	for (;;)
758	{
759	errno = 0, readdir_r (dirp, &u.d, &entp);
760
761	if (!entp)
762	break;
763
764	name = entp->d_name;
765
766	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767	{
768	int len = strlen (name) + 1;
769
770	res++;
771
772	while (memofs + len > memlen)
773	{
774	memlen *= 2;
775	names = realloc (names, memlen);
776	if (!names)
777	break;
778	}
779
780	memcpy (names + memofs, name, len);
781	memofs += len;
782	}
783	}
784
785	errorno = errno;
786	closedir (dirp);
787
788	if (errorno)
789	{
790	free (names);
791	errno = errorno;
792	res = -1;
793	}
794
795	*namesp = (void *)names;
796	return res;
797	}
798
799	/*****************************************************************************/
800
801	static void *aio_proc (void *thr_arg)
802	{
803	aio_req req;
804	int type;
805
806	do
807	{
808	pthread_mutex_lock (&reqlock);
809
810	for (;;)
811	{
812	req = reqs;
813
814	if (reqs)
815	{
816	reqs = reqs->next;
817	if (!reqs) reqe = 0;
818	}
819
820	if (req)
821	break;
822
823	pthread_cond_wait (&reqwait, &reqlock);
824	}
825
826	pthread_mutex_unlock (&reqlock);
827
828	errno = 0; /* strictly unnecessary */
829	type = req->type; /* remember type for QUIT check */
830
831	if (!(req->flags & FLAG_CANCELLED))
832	switch (type)
833	{
834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
836
837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
839
840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
843
844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
845	case REQ_CLOSE: req->result = close (req->fd); break;
846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
851
852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853	case REQ_FSYNC: req->result = fsync (req->fd); break;
854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855
856	case REQ_SLEEP:
857	{
858	struct timeval tv;
859
860	tv.tv_sec = req->fd;
861	tv.tv_usec = req->fd2;
862
863	req->result = select (0, 0, 0, 0, &tv);
864	}
865
866	case REQ_GROUP:
867	case REQ_NOP:
868	case REQ_QUIT:
869	break;
870
871	default:
872	req->result = ENOSYS;
873	break;
874	}
875
876	req->errorno = errno;
877
878	pthread_mutex_lock (&reslock);
879
880	req->next = 0;
881
882	if (rese)
883	{
884	rese->next = req;
885	rese = req;
886	}
887	else
888	{
889	rese = ress = req;
890
891	/* write a dummy byte to the pipe so fh becomes ready */
892	write (respipe [1], &respipe, 1);
893	}
894
895	pthread_mutex_unlock (&reslock);
896	}
897	while (type != REQ_QUIT);
898
899	return 0;
900	}
901
902	/*****************************************************************************/
903
904	static void atfork_prepare (void)
905	{
906	pthread_mutex_lock (&reqlock);
907	pthread_mutex_lock (&reslock);
908	#if !HAVE_PREADWRITE
909	pthread_mutex_lock (&preadwritelock);
910	#endif
911	#if !HAVE_READDIR_R
912	pthread_mutex_lock (&readdirlock);
913	#endif
914	}
915
916	static void atfork_parent (void)
917	{
918	#if !HAVE_READDIR_R
919	pthread_mutex_unlock (&readdirlock);
920	#endif
921	#if !HAVE_PREADWRITE
922	pthread_mutex_unlock (&preadwritelock);
923	#endif
924	pthread_mutex_unlock (&reslock);
925	pthread_mutex_unlock (&reqlock);
926	}	528	}
927		529
928	static void atfork_child (void)	530	static void atfork_child (void)
929	{	531	{
930	aio_req prv;
931
932	started = 0;
933
934	while (reqs)
935	{
936	prv = reqs;
937	reqs = prv->next;
938	req_free (prv);
939	}
940
941	reqs = reqe = 0;
942
943	while (ress)
944	{
945	prv = ress;
946	ress = prv->next;
947	req_free (prv);
948	}
949
950	ress = rese = 0;
951
952	close (respipe [0]);
953	close (respipe [1]);
954	create_pipe ();	532	create_respipe ();
		533	}
955		534
956	atfork_parent ();	535	static SV *
		536	get_cb (SV *cb_sv)
		537	{
		538	SvGETMAGIC (cb_sv);
		539	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
957	}	540	}
958		541
959	#define dREQ \	542	#define dREQ \
		543	SV *cb_cv; \
960	aio_req req; \	544	aio_req req; \
961	int req_pri = next_pri; \	545	int req_pri = next_pri; \
962	next_pri = DEFAULT_PRI + PRI_BIAS; \	546	next_pri = EIO_PRI_DEFAULT; \
963	\	547	\
964	if (SvOK (callback) && !SvROK (callback)) \	548	cb_cv = get_cb (callback); \
965	croak ("callback must be undef or of reference type"); \
966	\	549	\
967	Newz (0, req, 1, aio_cb); \	550	Newz (0, req, 1, eio_req); \
968	if (!req) \	551	if (!req) \
969	croak ("out of memory during aio_req allocation"); \	552	croak ("out of memory during eio_req allocation"); \
970	\	553	\
971	req->callback = newSVsv (callback); \	554	req->callback = SvREFCNT_inc (cb_cv); \
972	req->pri = req_pri	555	req->pri = req_pri
973		556
974	#define REQ_SEND \	557	#define REQ_SEND \
		558	PUTBACK; \
975	req_send (req); \	559	req_submit (req); \
		560	SPAGAIN; \
976	\	561	\
977	if (GIMME_V != G_VOID) \	562	if (GIMME_V != G_VOID) \
978	XPUSHs (req_sv (req, AIO_REQ_KLASS));	563	XPUSHs (req_sv (req, AIO_REQ_KLASS));
979		564
980	MODULE = IO::AIO PACKAGE = IO::AIO	565	MODULE = IO::AIO PACKAGE = IO::AIO
981		566
982	PROTOTYPES: ENABLE	567	PROTOTYPES: ENABLE
983		568
984	BOOT:	569	BOOT:
985	{	570	{
		571	static const struct {
		572	const char *name;
		573	IV iv;
		574	} *civ, const_iv[] = {
		575	# define const_iv(name, value) { # name, (IV) value },
		576	# define const_eio(name) { # name, (IV) EIO_ ## name },
		577	const_iv (EXDEV , EXDEV)
		578	const_iv (ENOSYS , ENOSYS)
		579	const_iv (O_RDONLY, O_RDONLY)
		580	const_iv (O_WRONLY, O_WRONLY)
		581	const_iv (O_CREAT , O_CREAT)
		582	const_iv (O_TRUNC , O_TRUNC)
		583	#ifndef _WIN32
		584	const_iv (S_IFIFO , S_IFIFO)
		585	#endif
		586	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		587	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		588	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		589	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		590	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		591	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		592
		593	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		594	const_eio (SYNC_FILE_RANGE_WRITE)
		595	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		596
		597	const_eio (READDIR_DENTS)
		598	const_eio (READDIR_DIRS_FIRST)
		599	const_eio (READDIR_STAT_ORDER)
		600	const_eio (READDIR_FOUND_UNKNOWN)
		601
		602	const_eio (DT_UNKNOWN)
		603	const_eio (DT_FIFO)
		604	const_eio (DT_CHR)
		605	const_eio (DT_DIR)
		606	const_eio (DT_BLK)
		607	const_eio (DT_REG)
		608	const_eio (DT_LNK)
		609	const_eio (DT_SOCK)
		610	const_eio (DT_WHT)
		611	};
		612
986	HV *stash = gv_stashpv ("IO::AIO", 1);	613	stash = gv_stashpv ("IO::AIO", 1);
987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
990		614
		615	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		616	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		617
991	create_pipe ();	618	create_respipe ();
992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
993	}
994		619
		620	if (eio_init (want_poll, done_poll) < 0)
		621	croak ("IO::AIO: unable to initialise eio library");
		622
		623	/* atfork child called in fifo order, so before eio's handler */
		624	X_THREAD_ATFORK (0, 0, atfork_child);
		625	}
		626
995	void	627	void
996	min_parallel (nthreads)	628	max_poll_reqs (int nreqs)
997	int nthreads
998	PROTOTYPE: $	629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_poll_reqs (nreqs);
999		632
1000	void	633	void
1001	max_parallel (nthreads)	634	max_poll_time (double nseconds)
1002	int nthreads
1003	PROTOTYPE: $	635	PROTOTYPE: $
1004
1005	int
1006	max_outstanding (nreqs)
1007	int nreqs
1008	PROTOTYPE: $
1009	CODE:	636	CODE:
1010	RETVAL = max_outstanding;	637	eio_set_max_poll_time (nseconds);
		638
		639	void
		640	min_parallel (int nthreads)
		641	PROTOTYPE: $
		642	CODE:
		643	eio_set_min_parallel (nthreads);
		644
		645	void
		646	max_parallel (int nthreads)
		647	PROTOTYPE: $
		648	CODE:
		649	eio_set_max_parallel (nthreads);
		650
		651	void
		652	max_idle (int nthreads)
		653	PROTOTYPE: $
		654	CODE:
		655	eio_set_max_idle (nthreads);
		656
		657	void
		658	max_outstanding (int maxreqs)
		659	PROTOTYPE: $
		660	CODE:
1011	max_outstanding = nreqs;	661	max_outstanding = maxreqs;
1012		662
1013	void	663	void
1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	664	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015	SV * pathname
1016	int flags
1017	int mode
1018	SV * callback
1019	PROTOTYPE: $$$;$	665	PROTOTYPE: $$$;$
1020	PPCODE:	666	PPCODE:
1021	{	667	{
1022	dREQ;	668	dREQ;
1023		669
1024	req->type = REQ_OPEN;	670	req->type = EIO_OPEN;
1025	req->data = newSVsv (pathname);	671	req->sv1 = newSVsv (pathname);
1026	req->dataptr = SvPVbyte_nolen (req->data);	672	req->ptr1 = SvPVbyte_nolen (req->sv1);
1027	req->fd = flags;	673	req->int1 = flags;
1028	req->mode = mode;	674	req->int2 = mode;
1029		675
1030	REQ_SEND;	676	REQ_SEND;
1031	}	677	}
1032		678
1033	void	679	void
1034	aio_close (fh,callback=&PL_sv_undef)	680	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035	SV * fh
1036	SV * callback
1037	PROTOTYPE: $;$	681	PROTOTYPE: $;$
1038	ALIAS:	682	ALIAS:
1039	aio_close = REQ_CLOSE
1040	aio_fsync = REQ_FSYNC	683	aio_fsync = EIO_FSYNC
1041	aio_fdatasync = REQ_FDATASYNC	684	aio_fdatasync = EIO_FDATASYNC
1042	PPCODE:	685	PPCODE:
1043	{	686	{
		687	int fd = s_fileno_croak (fh, 0);
1044	dREQ;	688	dREQ;
1045		689
1046	req->type = ix;	690	req->type = ix;
1047	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = fd;
1049		693
1050	REQ_SEND (req);	694	REQ_SEND (req);
1051	}	695	}
1052		696
1053	void	697	void
		698	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $$$$;$
		700	PPCODE:
		701	{
		702	int fd = s_fileno_croak (fh, 0);
		703	dREQ;
		704
		705	req->type = EIO_SYNC_FILE_RANGE;
		706	req->sv1 = newSVsv (fh);
		707	req->int1 = fd;
		708	req->offs = offset;
		709	req->size = nbytes;
		710	req->int2 = flags;
		711
		712	REQ_SEND (req);
		713	}
		714
		715	void
		716	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		717	PROTOTYPE: $;$
		718	PPCODE:
		719	{
		720	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		721	int fd = s_fileno_croak (fh, 0);
		722	dREQ;
		723
		724	if (close_pipe < 0)
		725	{
		726	int pipefd [2];
		727
		728	if (pipe (pipefd) < 0
		729	|| close (pipefd [1]) < 0
		730	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		731	abort (); /*D*/
		732
		733	close_pipe = pipefd [0];
		734	}
		735
		736	req->type = EIO_DUP2;
		737	req->int1 = close_pipe;
		738	req->sv2 = newSVsv (fh);
		739	req->int2 = fd;
		740
		741	REQ_SEND (req);
		742	}
		743
		744	void
1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	745	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055	SV * fh
1056	UV offset
1057	UV length
1058	SV * data
1059	UV dataoffset
1060	SV * callback
1061	ALIAS:	746	ALIAS:
1062	aio_read = REQ_READ	747	aio_read = EIO_READ
1063	aio_write = REQ_WRITE	748	aio_write = EIO_WRITE
1064	PROTOTYPE: $$$$$;$	749	PROTOTYPE: $$$$$;$
1065	PPCODE:	750	PPCODE:
1066	{	751	{
1067	aio_req req;
1068	STRLEN svlen;	752	STRLEN svlen;
		753	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1069	char *svptr = SvPVbyte (data, svlen);	754	char *svptr = SvPVbyte (data, svlen);
1070		755	UV len = SvUV (length);
1071	SvUPGRADE (data, SVt_PV);
1072	SvPOK_on (data);
1073		756
1074	if (dataoffset < 0)	757	if (dataoffset < 0)
1075	dataoffset += svlen;	758	dataoffset += svlen;
1076		759
1077	if (dataoffset < 0 || dataoffset > svlen)	760	if (dataoffset < 0 || dataoffset > svlen)
1078	croak ("data offset outside of string");	761	croak ("dataoffset outside of data scalar");
1079		762
1080	if (ix == REQ_WRITE)	763	if (ix == EIO_WRITE)
1081	{	764	{
1082	/* write: check length and adjust. */	765	/* write: check length and adjust. */
1083	if (length < 0 || length + dataoffset > svlen)	766	if (!SvOK (length) || len + dataoffset > svlen)
1084	length = svlen - dataoffset;	767	len = svlen - dataoffset;
1085	}	768	}
1086	else	769	else
1087	{	770	{
1088	/* read: grow scalar as necessary */	771	/* read: check type and grow scalar as necessary */
		772	SvUPGRADE (data, SVt_PV);
1089	svptr = SvGROW (data, length + dataoffset);	773	svptr = SvGROW (data, len + dataoffset + 1);
1090	}	774	}
1091
1092	if (length < 0)
1093	croak ("length must not be negative");
1094		775
1095	{	776	{
1096	dREQ;	777	dREQ;
1097		778
1098	req->type = ix;	779	req->type = ix;
1099	req->fh = newSVsv (fh);	780	req->sv1 = newSVsv (fh);
1100	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	781	req->int1 = fd;
1101	: IoOFP (sv_2io (fh)));	782	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102	req->offset = offset;	783	req->size = len;
1103	req->length = length;
1104	req->data = SvREFCNT_inc (data);	784	req->sv2 = SvREFCNT_inc (data);
1105	req->dataptr = (char *)svptr + dataoffset;	785	req->ptr2 = (char *)svptr + dataoffset;
		786	req->stroffset = dataoffset;
1106		787
1107	if (!SvREADONLY (data))	788	if (!SvREADONLY (data))
1108	{	789	{
1109	SvREADONLY_on (data);	790	SvREADONLY_on (data);
1110	req->data2ptr = (void *)data;	791	req->flags |= FLAG_SV2_RO_OFF;
1111	}	792	}
1112		793
1113	REQ_SEND;	794	REQ_SEND;
1114	}	795	}
1115	}	796	}
1116		797
1117	void	798	void
		799	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		800	PROTOTYPE: $$;$
		801	PPCODE:
		802	{
		803	SV *data;
		804	dREQ;
		805
		806	req->type = EIO_READLINK;
		807	req->sv1 = newSVsv (path);
		808	req->ptr1 = SvPVbyte_nolen (req->sv1);
		809
		810	REQ_SEND;
		811	}
		812
		813	void
1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	814	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1119	SV * out_fh
1120	SV * in_fh
1121	UV in_offset
1122	UV length
1123	SV * callback
1124	PROTOTYPE: $$$$;$	815	PROTOTYPE: $$$$;$
1125	PPCODE:	816	PPCODE:
1126	{	817	{
		818	int ifd = s_fileno_croak (in_fh , 0);
		819	int ofd = s_fileno_croak (out_fh, 1);
1127	dREQ;	820	dREQ;
1128		821
1129	req->type = REQ_SENDFILE;	822	req->type = EIO_SENDFILE;
1130	req->fh = newSVsv (out_fh);	823	req->sv1 = newSVsv (out_fh);
1131	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	824	req->int1 = ofd;
1132	req->fh2 = newSVsv (in_fh);	825	req->sv2 = newSVsv (in_fh);
1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	826	req->int2 = ifd;
1134	req->offset = in_offset;	827	req->offs = in_offset;
1135	req->length = length;	828	req->size = length;
1136		829
1137	REQ_SEND;	830	REQ_SEND;
1138	}	831	}
1139		832
1140	void	833	void
1141	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	834	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	UV offset
1144	IV length
1145	SV * callback
1146	PROTOTYPE: $$$;$	835	PROTOTYPE: $$$;$
1147	PPCODE:	836	PPCODE:
1148	{	837	{
		838	int fd = s_fileno_croak (fh, 0);
1149	dREQ;	839	dREQ;
1150		840
1151	req->type = REQ_READAHEAD;	841	req->type = EIO_READAHEAD;
1152	req->fh = newSVsv (fh);	842	req->sv1 = newSVsv (fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	843	req->int1 = fd;
1154	req->offset = offset;	844	req->offs = offset;
1155	req->length = length;	845	req->size = length;
1156		846
1157	REQ_SEND;	847	REQ_SEND;
1158	}	848	}
1159		849
1160	void	850	void
1161	aio_stat (fh_or_path,callback=&PL_sv_undef)	851	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162	SV * fh_or_path
1163	SV * callback
1164	ALIAS:	852	ALIAS:
1165	aio_stat = REQ_STAT	853	aio_stat = EIO_STAT
1166	aio_lstat = REQ_LSTAT	854	aio_lstat = EIO_LSTAT
1167	PPCODE:	855	PPCODE:
1168	{	856	{
1169	dREQ;	857	dREQ;
1170		858
1171	New (0, req->statdata, 1, Stat_t);	859	req->sv1 = newSVsv (fh_or_path);
1172	if (!req->statdata)
1173	{
1174	req_free (req);
1175	croak ("out of memory during aio_req->statdata allocation");
1176	}
1177		860
1178	if (SvPOK (fh_or_path))	861	if (SvPOK (req->sv1))
1179	{	862	{
1180	req->type = ix;	863	req->type = ix;
1181	req->data = newSVsv (fh_or_path);
1182	req->dataptr = SvPVbyte_nolen (req->data);	864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	}	865	}
1184	else	866	else
1185	{	867	{
1186	req->type = REQ_FSTAT;	868	req->type = EIO_FSTAT;
1187	req->fh = newSVsv (fh_or_path);
1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	869	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189	}	870	}
1190		871
1191	REQ_SEND;	872	REQ_SEND;
1192	}	873	}
1193		874
1194	void	875	void
		876	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		877	PPCODE:
		878	{
		879	dREQ;
		880
		881	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		882	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		883	req->sv1 = newSVsv (fh_or_path);
		884
		885	if (SvPOK (req->sv1))
		886	{
		887	req->type = EIO_UTIME;
		888	req->ptr1 = SvPVbyte_nolen (req->sv1);
		889	}
		890	else
		891	{
		892	req->type = EIO_FUTIME;
		893	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		894	}
		895
		896	REQ_SEND;
		897	}
		898
		899	void
		900	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		901	PPCODE:
		902	{
		903	dREQ;
		904
		905	req->sv1 = newSVsv (fh_or_path);
		906	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		907
		908	if (SvPOK (req->sv1))
		909	{
		910	req->type = EIO_TRUNCATE;
		911	req->ptr1 = SvPVbyte_nolen (req->sv1);
		912	}
		913	else
		914	{
		915	req->type = EIO_FTRUNCATE;
		916	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		917	}
		918
		919	REQ_SEND;
		920	}
		921
		922	void
		923	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		924	ALIAS:
		925	aio_chmod = EIO_CHMOD
		926	aio_mkdir = EIO_MKDIR
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->int2 = mode;
		932	req->sv1 = newSVsv (fh_or_path);
		933
		934	if (SvPOK (req->sv1))
		935	{
		936	req->type = ix;
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938	}
		939	else
		940	{
		941	req->type = EIO_FCHMOD;
		942	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		943	}
		944
		945	REQ_SEND;
		946	}
		947
		948	void
		949	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		950	PPCODE:
		951	{
		952	dREQ;
		953
		954	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		955	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		956	req->sv1 = newSVsv (fh_or_path);
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_CHOWN;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FCHOWN;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		974	PPCODE:
		975	{
		976	dREQ;
		977
		978	req->type = EIO_READDIR;
		979	req->sv1 = newSVsv (pathname);
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		982
		983	if (flags & EIO_READDIR_DENTS)
		984	req->int1 |= EIO_READDIR_CUSTOM2;
		985
		986	REQ_SEND;
		987	}
		988
		989	void
1195	aio_unlink (pathname,callback=&PL_sv_undef)	990	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196	SV * pathname
1197	SV * callback
1198	ALIAS:	991	ALIAS:
1199	aio_unlink = REQ_UNLINK	992	aio_unlink = EIO_UNLINK
1200	aio_rmdir = REQ_RMDIR	993	aio_rmdir = EIO_RMDIR
1201	aio_readdir = REQ_READDIR	994	aio_readdir = EIO_READDIR
1202	PPCODE:	995	PPCODE:
1203	{	996	{
1204	dREQ;	997	dREQ;
1205		998
1206	req->type = ix;	999	req->type = ix;
1207	req->data = newSVsv (pathname);	1000	req->sv1 = newSVsv (pathname);
1208	req->dataptr = SvPVbyte_nolen (req->data);	1001	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1002
		1003	REQ_SEND;
		1004	}
		1005
		1006	void
		1007	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1008	ALIAS:
		1009	aio_link = EIO_LINK
		1010	aio_symlink = EIO_SYMLINK
		1011	aio_rename = EIO_RENAME
		1012	PPCODE:
		1013	{
		1014	dREQ;
		1015
		1016	req->type = ix;
		1017	req->sv1 = newSVsv (oldpath);
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	req->sv2 = newSVsv (newpath);
		1020	req->ptr2 = SvPVbyte_nolen (req->sv2);
1209		1021
1210	REQ_SEND;	1022	REQ_SEND;
1211	}	1023	}
1212		1024
1213	void	1025	void
1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1215	SV * oldpath
1216	SV * newpath
1217	SV * callback
1218	ALIAS:
1219	aio_link = REQ_LINK
1220	aio_symlink = REQ_SYMLINK
1221	aio_rename = REQ_RENAME
1222	PPCODE:	1027	PPCODE:
1223	{	1028	{
1224	dREQ;	1029	dREQ;
1225		1030
1226	req->type = ix;	1031	req->type = EIO_MKNOD;
1227	req->fh = newSVsv (oldpath);	1032	req->sv1 = newSVsv (pathname);
1228	req->data2ptr = SvPVbyte_nolen (req->fh);	1033	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	req->data = newSVsv (newpath);	1034	req->int2 = (mode_t)mode;
1230	req->dataptr = SvPVbyte_nolen (req->data);	1035	req->offs = dev;
1231		1036
1232	REQ_SEND;	1037	REQ_SEND;
1233	}	1038	}
1234		1039
1235	void	1040	void
1236	aio_sleep (delay,callback=&PL_sv_undef)	1041	aio_busy (double delay, SV *callback=&PL_sv_undef)
1237	double delay
1238	SV * callback
1239	PPCODE:	1042	PPCODE:
1240	{	1043	{
1241	dREQ;	1044	dREQ;
1242		1045
1243	req->type = REQ_SLEEP;	1046	req->type = EIO_BUSY;
1244	req->fd = delay < 0. ? 0 : delay;	1047	req->nv1 = delay < 0. ? 0. : delay;
1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246		1048
1247	REQ_SEND;	1049	REQ_SEND;
1248	}	1050	}
1249		1051
1250	void	1052	void
1251	aio_group (callback=&PL_sv_undef)	1053	aio_group (SV *callback=&PL_sv_undef)
1252	SV * callback
1253	PROTOTYPE: ;$	1054	PROTOTYPE: ;$
1254	PPCODE:	1055	PPCODE:
1255	{	1056	{
1256	dREQ;	1057	dREQ;
1257		1058
1258	req->type = REQ_GROUP;	1059	req->type = EIO_GROUP;
		1060
1259	req_send (req);	1061	req_submit (req);
1260
1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1062	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262	}	1063	}
1263		1064
1264	void	1065	void
1265	aio_nop (callback=&PL_sv_undef)	1066	aio_nop (SV *callback=&PL_sv_undef)
1266	SV * callback	1067	ALIAS:
		1068	aio_nop = EIO_NOP
		1069	aio_sync = EIO_SYNC
1267	PPCODE:	1070	PPCODE:
1268	{	1071	{
1269	dREQ;	1072	dREQ;
1270		1073
1271	req->type = REQ_NOP;	1074	req->type = ix;
1272		1075
1273	REQ_SEND;	1076	REQ_SEND;
1274	}	1077	}
1275		1078
1276	#if 0	1079	int
1277		1080	aioreq_pri (int pri = 0)
1278	void	1081	PROTOTYPE: ;$
1279	aio_pri (int pri = DEFAULT_PRI)
1280	CODE:	1082	CODE:
		1083	RETVAL = next_pri;
		1084	if (items > 0)
		1085	{
1281	if (pri < PRI_MIN) pri = PRI_MIN;	1086	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1282	if (pri > PRI_MAX) pri = PRI_MAX;	1087	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1283	next_pri = pri + PRI_BIAS;	1088	next_pri = pri;
		1089	}
		1090	OUTPUT:
		1091	RETVAL
1284		1092
1285	#endif	1093	void
		1094	aioreq_nice (int nice = 0)
		1095	CODE:
		1096	nice = next_pri - nice;
		1097	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1098	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1099	next_pri = nice;
1286		1100
1287	void	1101	void
1288	flush ()	1102	flush ()
1289	PROTOTYPE:	1103	PROTOTYPE:
1290	CODE:	1104	CODE:
1291	while (nreqs)	1105	while (eio_nreqs ())
1292	{	1106	{
1293	poll_wait ();	1107	poll_wait ();
1294	poll_cb ();	1108	poll_cb ();
1295	}	1109	}
1296		1110
1297	void	1111	int
1298	poll()	1112	poll()
1299	PROTOTYPE:	1113	PROTOTYPE:
1300	CODE:	1114	CODE:
1301	if (nreqs)
1302	{
1303	poll_wait ();	1115	poll_wait ();
1304	poll_cb ();	1116	RETVAL = poll_cb ();
1305	}	1117	OUTPUT:
		1118	RETVAL
1306		1119
1307	int	1120	int
1308	poll_fileno()	1121	poll_fileno()
1309	PROTOTYPE:	1122	PROTOTYPE:
1310	CODE:	1123	CODE:
…		…
1322		1135
1323	void	1136	void
1324	poll_wait()	1137	poll_wait()
1325	PROTOTYPE:	1138	PROTOTYPE:
1326	CODE:	1139	CODE:
1327	if (nreqs)
1328	poll_wait ();	1140	poll_wait ();
1329		1141
1330	int	1142	int
1331	nreqs()	1143	nreqs()
1332	PROTOTYPE:	1144	PROTOTYPE:
1333	CODE:	1145	CODE:
1334	RETVAL = nreqs;	1146	RETVAL = eio_nreqs ();
1335	OUTPUT:	1147	OUTPUT:
1336	RETVAL	1148	RETVAL
1337		1149
		1150	int
		1151	nready()
		1152	PROTOTYPE:
		1153	CODE:
		1154	RETVAL = eio_nready ();
		1155	OUTPUT:
		1156	RETVAL
		1157
		1158	int
		1159	npending()
		1160	PROTOTYPE:
		1161	CODE:
		1162	RETVAL = eio_npending ();
		1163	OUTPUT:
		1164	RETVAL
		1165
		1166	int
		1167	nthreads()
		1168	PROTOTYPE:
		1169	CODE:
		1170	RETVAL = eio_nthreads ();
		1171	OUTPUT:
		1172	RETVAL
		1173
		1174	int
		1175	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1176	PROTOTYPE: $$$$
		1177	CODE:
		1178	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1179	RETVAL = posix_fadvise (fh, offset, length, advice);
		1180	#else
		1181	RETVAL = errno = ENOSYS;
		1182	#endif
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	ssize_t
		1187	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1188	PROTOTYPE: $$$$
		1189	CODE:
		1190	eio_sendfile_sync (ofh, ifh, offset, count);
		1191
		1192	void _on_next_submit (SV *cb)
		1193	CODE:
		1194	SvREFCNT_dec (on_next_submit);
		1195	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1196
1338	PROTOTYPES: DISABLE	1197	PROTOTYPES: DISABLE
1339		1198
1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1199	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341		1200
1342	void	1201	void
1343	cancel (aio_req_ornot req)	1202	cancel (aio_req_ornot req)
1344	PROTOTYPE:
1345	CODE:	1203	CODE:
1346	req_cancel (req);	1204	eio_cancel (req);
1347		1205
1348	void	1206	void
1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1207	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350	CODE:	1208	PPCODE:
		1209	{
		1210	if (GIMME_V != G_VOID)
		1211	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1212
		1213	if (items > 1)
		1214	{
		1215	SV *cb_cv =get_cb (callback);
		1216
1351	SvREFCNT_dec (req->callback);	1217	SvREFCNT_dec (req->callback);
1352	req->callback = newSVsv (callback);	1218	req->callback = SvREFCNT_inc (cb_cv);
		1219	}
		1220	}
1353		1221
1354	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1222	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1355		1223
1356	void	1224	void
1357	add (aio_req grp, ...)	1225	add (aio_req grp, ...)
1358	PPCODE:	1226	PPCODE:
1359	{	1227	{
1360	int i;	1228	int i;
1361	aio_req req;
1362		1229
1363	if (grp->fd == 2)	1230	if (grp->int1 == 2)
1364	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1231	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365		1232
1366	for (i = 1; i < items; ++i )	1233	for (i = 1; i < items; ++i )
1367	{	1234	{
		1235	aio_req req;
		1236
1368	if (GIMME_V != G_VOID)	1237	if (GIMME_V != G_VOID)
1369	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1238	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370		1239
1371	req = SvAIO_REQ (ST (i));	1240	req = SvAIO_REQ (ST (i));
1372		1241
1373	if (req)	1242	if (req)
1374	{	1243	eio_grp_add (grp, req);
1375	++grp->length;
1376	req->grp = grp;
1377
1378	req->grp_prev = 0;
1379	req->grp_next = grp->grp_first;
1380
1381	if (grp->grp_first)
1382	grp->grp_first->grp_prev = req;
1383
1384	grp->grp_first = req;
1385	}	1244	}
1386	}
1387	}	1245	}
		1246
		1247	void
		1248	cancel_subs (aio_req_ornot req)
		1249	CODE:
		1250	req_cancel_subs (req);
1388		1251
1389	void	1252	void
1390	result (aio_req grp, ...)	1253	result (aio_req grp, ...)
1391	CODE:	1254	CODE:
1392	{	1255	{
1393	int i;	1256	int i;
		1257	AV *av;
		1258
		1259	grp->errorno = errno;
		1260
1394	AV *av = newAV ();	1261	av = newAV ();
		1262	av_extend (av, items - 1);
1395		1263
1396	for (i = 1; i < items; ++i )	1264	for (i = 1; i < items; ++i )
1397	av_push (av, newSVsv (ST (i)));	1265	av_push (av, newSVsv (ST (i)));
1398		1266
1399	SvREFCNT_dec (grp->data);	1267	SvREFCNT_dec (grp->sv1);
1400	grp->data = (SV *)av;	1268	grp->sv1 = (SV *)av;
1401	}	1269	}
1402		1270
1403	void	1271	void
		1272	errno (aio_req grp, int errorno = errno)
		1273	CODE:
		1274	grp->errorno = errorno;
		1275
		1276	void
1404	feed_limit (aio_req grp, int limit)	1277	limit (aio_req grp, int limit)
1405	CODE:	1278	CODE:
1406	grp->fd2 = limit;	1279	eio_grp_limit (grp, limit);
1407	aio_grp_feed (grp);
1408		1280
1409	void	1281	void
1410	feed (aio_req grp, SV *callback=&PL_sv_undef)	1282	feed (aio_req grp, SV *callback=&PL_sv_undef)
1411	CODE:	1283	CODE:
1412	{	1284	{
1413	SvREFCNT_dec (grp->fh2);	1285	SvREFCNT_dec (grp->sv2);
1414	grp->fh2 = newSVsv (callback);	1286	grp->sv2 = newSVsv (callback);
		1287	grp->feed = aio_grp_feed;
1415		1288
1416	if (grp->fd2 <= 0)	1289	if (grp->int2 <= 0)
1417	grp->fd2 = 2;	1290	grp->int2 = 2;
1418		1291
1419	aio_grp_feed (grp);	1292	eio_grp_limit (grp, grp->int2);
1420	}	1293	}
1421		1294

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