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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.67 by root, Tue Oct 24 03:17:39 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	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};
124
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126
127	static int started, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;	160	static int max_outstanding;
130	static int respipe [2];
131		161
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137		163
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	164	static void req_destroy (aio_req req);
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141
142	/*
143	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.
146	*/
147	typedef struct {
148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149	int size;
150	} reqq;
151
152	static reqq req_queue;
153	static reqq res_queue;
154
155	int reqq_push (reqq *q, aio_req req)
156	{
157	int pri = req->pri;
158	req->next = 0;
159
160	if (q->qe[pri])
161	{
162	q->qe[pri]->next = req;
163	q->qe[pri] = req;
164	}
165	else
166	q->qe[pri] = q->qs[pri] = req;
167
168	return q->size++;
169	}
170
171	aio_req reqq_shift (reqq *q)
172	{
173	int pri;
174
175	if (!q->size)
176	return 0;
177
178	--q->size;
179
180	for (pri = NUM_PRI; pri--; )
181	{
182	aio_req req = q->qs[pri];
183
184	if (req)
185	{
186	if (!(q->qs[pri] = req->next))
187	q->qe[pri] = 0;
188
189	return req;
190	}
191	}
192
193	abort ();
194	}
195
196	static void req_invoke (aio_req req);	165	static void req_cancel (aio_req req);
197	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	}
198		180
199	/* must be called at most once */	181	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
201	{	183	{
202	if (!req->self)	184	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	203	}
222		204
223	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
224	{	206	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
226	{	208	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	209	dSP;
232		210
233	ENTER;	211	ENTER;
234	SAVETMPS;	212	SAVETMPS;
235	PUSHMARK (SP);	213	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	215	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	217	SPAGAIN;
240	FREETMPS;	218	FREETMPS;
241	LEAVE;	219	LEAVE;
242	}
243
244	/* stop if no progress has been made */
245	if (old_len == grp->length)
246	{
247	SvREFCNT_dec (grp->fh2);
248	grp->fh2 = 0;
249	break;
250	}
251	}	220	}
252	}	221	}
253		222
254	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
255	{	224	{
256	--grp->length;	225	eio_submit (req);
257		226
258	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	228	{
264	req_invoke (grp);	229	dSP;
265	req_free (grp);	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);
266	}	237	}
267	}	238	}
268		239
269	static void poll_wait ()	240	static int req_invoke (eio_req *req)
270	{	241	{
271	fd_set rfd;	242	dSP;
272		243
273	while (nreqs)	244	if (req->flags & FLAG_SV2_RO_OFF)
		245	SvREADONLY_off (req->sv2);
		246
		247	if (!EIO_CANCELLED (req) && req->callback)
274	{	248	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)
295	{
296	dSP;
297
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{
300	errno = req->errorno;
301
302	ENTER;	249	ENTER;
303	SAVETMPS;	250	SAVETMPS;
304	PUSHMARK (SP);	251	PUSHMARK (SP);
305	EXTEND (SP, 1);	252	EXTEND (SP, 1);
306		253
307	switch (req->type)	254	switch (req->type)
308	{	255	{
309	case REQ_READDIR:	256	case EIO_READDIR:
310	{	257	{
311	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
312		259
313	if (req->result >= 0)	260	if (req->result >= 0)
314	{	261	{
		262	int i;
315	char *buf = req->data2ptr;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	265	AV *av = newAV ();
317		266
318	while (req->result)	267	av_extend (av, req->result - 1);
		268
		269	for (i = 0; i < req->result; ++i)
319	{	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	{
320	SV *sv = newSVpv (buf, 0);	301	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	302	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
324	req->result--;	304	}
325	}	305	}
326		306
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	308	}
329		309
330	PUSHs (rv);	310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	314	}
332	break;	315	break;
333		316
334	case REQ_OPEN:	317	case EIO_OPEN:
335	{	318	{
336	/* convert fd to fh */	319	/* convert fd to fh */
337	SV *fh;	320	SV *fh = &PL_sv_undef;
338		321
339	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
340	PUTBACK;	323	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	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);
343		331
344	fh = SvREFCNT_inc (POPs);	332	symlen = snprintf (
		333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
345		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
346	PUSHMARK (SP);	344	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	345	}
349	break;	346	break;
350		347
351	case REQ_GROUP:	348	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
353		350
354	if (req->data)	351	if (req->sv1)
355	{	352	{
356	int i;	353	int i;
357	AV *av = (AV *)req->data;	354	AV *av = (AV *)req->sv1;
358		355
359	EXTEND (SP, AvFILL (av) + 1);	356	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
362	}	359	}
363	break;	360	break;
364		361
365	case REQ_NOP:	362	case EIO_NOP:
366	case REQ_SLEEP:	363	case EIO_BUSY:
367	break;	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 */
368		394
369	default:	395	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	397	break;
372	}	398	}
373		399
		400	errno = req->errorno;
374		401
375	PUTBACK;	402	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	404	SPAGAIN;
378		405
379	FREETMPS;	406	FREETMPS;
380	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
381	}	410	}
382		411
383	if (req->grp)	412	return !!SvTRUE (ERRSV);
384	{
385	aio_req grp = req->grp;
386
387	/* unlink request */
388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
390
391	if (grp->grp_first == req)
392	grp->grp_first = req->grp_next;
393
394	aio_grp_dec (grp);
395	}
396
397	if (SvTRUE (ERRSV))
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	413	}
403		414
404	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
405	{	416	{
406	if (req->self)	417	if (req->self)
407	{	418	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
410	}	421	}
411		422
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	423	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	424	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		426
421	Safefree (req);	427	Safefree (req);
422	}	428	}
423		429
424	static void req_cancel (aio_req req)	430	static void req_cancel_subs (aio_req grp)
425	{	431	{
426	req->flags |= FLAG_CANCELLED;	432	aio_req sub;
427		433
428	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)
429	{	465	{
430	aio_req sub;	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		467	croak ("unable to initialize result pipe(2)");
431		468
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	469	respipe_close (respipe [0]);
433	req_cancel (sub);	470	respipe [0] = old_readfd;
434	}	471	}
435	}
436		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
437	static int poll_cb ()	511	static int poll_cb (void)
438	{	512	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	513	for (;;)
445	{	514	{
446	pthread_mutex_lock (&reslock);	515	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		516
449	if (req)	517	if (res > 0)
450	{
451	if (!res_queue.size)
452	{
453	/* read any signals sent by the worker threads */
454	char buf [32];
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}
458	}
459
460	pthread_mutex_unlock (&reslock);
461
462	if (!req)
463	break;	518	croak (0);
464		519
465	--nreqs;	520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
466		522
467	if (req->type == REQ_QUIT)	523	poll_wait ();
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	524	}
496
497	return count;
498	}	525	}
499		526
500	static void *aio_proc(void *arg);
501
502	static void start_thread (void)	527	static void atfork_child (void)
503	{	528	{
504	sigset_t fullsigset, oldsigset;	529	create_respipe ();
505	pthread_t tid;
506	pthread_attr_t attr;
507
508	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}	530	}
520		531
521	static void req_send (aio_req req)	532	static SV *
		533	get_cb (SV *cb_sv)
522	{	534	{
523	while (started < wanted && nreqs >= started)	535	HV *st;
524	start_thread ();	536	GV *gvp;
		537	CV *cv;
525		538
526	++nreqs;	539	if (!SvOK (cb_sv))
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{
572	end_thread ();
573	cur--;
574	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}
582
583	static void create_pipe ()
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
589	croak ("cannot set result pipe to nonblocking mode");
590
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593	}
594
595	/*****************************************************************************/
596	/* work around various missing functions */
597
598	#if !HAVE_PREADWRITE
599	# define pread aio_pread
600	# define pwrite aio_pwrite
601
602	/*
603	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.
606	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
608
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{
611	ssize_t res;
612	off_t ooffset;
613
614	pthread_mutex_lock (&preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);
620
621	return res;
622	}
623
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{
626	ssize_t res;
627	off_t ooffset;
628
629	pthread_mutex_lock (&preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);
635
636	return res;
637	}
638	#endif
639
640	#if !HAVE_FDATASYNC
641	# define fdatasync fsync
642	#endif
643
644	#if !HAVE_READAHEAD
645	# define readahead aio_readahead
646
647	static ssize_t readahead (int fd, off_t offset, size_t count)
648	{
649	dBUF;
650
651	while (count > 0)
652	{
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
654
655	pread (fd, aio_buf, len, offset);
656	offset += len;
657	count -= len;
658	}
659
660	fBUF;
661
662	errno = 0;
663	}
664	#endif
665
666	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r
668
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
670
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{
673	struct dirent *e;
674	int errorno;
675
676	pthread_mutex_lock (&readdirlock);
677
678	e = readdir (dirp);
679	errorno = errno;
680
681	if (e)
682	{
683	*res = ent;
684	strcpy (ent->d_name, e->d_name);
685	}
686	else
687	*res = 0;
688
689	pthread_mutex_unlock (&readdirlock);
690
691	errno = errorno;
692	return e ? 0 : -1;
693	}
694	#endif
695
696	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
698	{
699	ssize_t res;
700
701	if (!count)
702	return 0;	540	return 0;
703		541
704	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
705	# if __linux
706	res = sendfile (ofd, ifd, &offset, count);
707		543
708	# elif __freebsd	544	if (!cv)
709	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
710	* Of course, the freebsd sendfile is a dire hack with no thoughts
711	* wasted on making it similar to other I/O functions.
712	*/
713	{
714	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		546
717	if (res < 0 && sbytes)	547	return (SV *)cv;
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
719	res = sbytes;
720	}
721
722	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);
724
725	# elif __solaris
726	{
727	struct sendfilevec vec;
728	size_t sbytes;
729
730	vec.sfv_fd = ifd;
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734
735	res = sendfilev (ofd, &vec, 1, &sbytes);
736
737	if (res < 0 && sbytes)
738	res = sbytes;
739	}
740
741	# endif
742	#else
743	res = -1;
744	errno = ENOSYS;
745	#endif
746
747	if (res < 0
748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
749	#if __solaris
750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
751	#endif
752	)
753	)
754	{
755	/* emulate sendfile. this is a major pain in the ass */
756	dBUF;
757
758	res = 0;
759
760	while (count)
761	{
762	ssize_t cnt;
763
764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
765
766	if (cnt <= 0)
767	{
768	if (cnt && !res) res = -1;
769	break;
770	}
771
772	cnt = write (ofd, aio_buf, cnt);
773
774	if (cnt <= 0)
775	{
776	if (cnt && !res) res = -1;
777	break;
778	}
779
780	offset += cnt;
781	res += cnt;
782	count -= cnt;
783	}
784
785	fBUF;
786	}
787
788	return res;
789	}
790
791	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)
793	{
794	DIR *dirp;
795	union
796	{
797	struct dirent d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
799	} *u;
800	struct dirent *entp;
801	char *name, *names;
802	int memlen = 4096;
803	int memofs = 0;
804	int res = 0;
805	int errorno;
806
807	dirp = opendir (path);
808	if (!dirp)
809	return -1;
810
811	u = malloc (sizeof (*u));
812	names = malloc (memlen);
813
814	if (u && names)
815	for (;;)
816	{
817	errno = 0;
818	readdir_r (dirp, &u->d, &entp);
819
820	if (!entp)
821	break;
822
823	name = entp->d_name;
824
825	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
826	{
827	int len = strlen (name) + 1;
828
829	res++;
830
831	while (memofs + len > memlen)
832	{
833	memlen *= 2;
834	names = realloc (names, memlen);
835	if (!names)
836	break;
837	}
838
839	memcpy (names + memofs, name, len);
840	memofs += len;
841	}
842	}
843
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854
855	*namesp = (void *)names;
856	return res;
857	}
858
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869
870	for (;;)
871	{
872	req = reqq_shift (&req_queue);
873
874	if (req)
875	break;
876
877	pthread_cond_wait (&reqwait, &reqlock);
878	}
879
880	pthread_mutex_unlock (&reqlock);
881
882	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884
885	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)
887	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
890
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
893
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
897
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
905
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
909
910	case REQ_SLEEP:
911	{
912	struct timeval tv;
913
914	tv.tv_sec = req->fd;
915	tv.tv_usec = req->fd2;
916
917	req->result = select (0, 0, 0, 0, &tv);
918	}
919
920	case REQ_GROUP:
921	case REQ_NOP:
922	case REQ_QUIT:
923	break;
924
925	default:
926	req->result = ENOSYS;
927	break;
928	}
929
930	req->errorno = errno;
931
932	pthread_mutex_lock (&reslock);
933
934	if (!reqq_push (&res_queue, req))
935	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);
937
938	pthread_mutex_unlock (&reslock);
939	}
940	while (type != REQ_QUIT);
941
942	return 0;
943	}
944
945	/*****************************************************************************/
946
947	static void atfork_prepare (void)
948	{
949	pthread_mutex_lock (&reqlock);
950	pthread_mutex_lock (&reslock);
951	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);
953	#endif
954	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);
956	#endif
957	}
958
959	static void atfork_parent (void)
960	{
961	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);
963	#endif
964	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);
966	#endif
967	pthread_mutex_unlock (&reslock);
968	pthread_mutex_unlock (&reqlock);
969	}
970
971	static void atfork_child (void)
972	{
973	aio_req prv;
974
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))
978	req_free (prv);
979
980	while (prv = reqq_shift (&res_queue))
981	req_free (prv);
982
983	close (respipe [0]);
984	close (respipe [1]);
985	create_pipe ();
986
987	atfork_parent ();
988	}	548	}
989		549
990	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
991	aio_req req; \	552	aio_req req; \
992	int req_pri = next_pri; \	553	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
994	\	555	\
995	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
996	croak ("callback must be undef or of reference type"); \
997	\	557	\
998	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
999	if (!req) \	559	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1001	\	561	\
1002	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1003	req->pri = req_pri	563	req->pri = req_pri
1004		564
1005	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1006	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1007	\	569	\
1008	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010		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
1011	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1012		585
1013	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1014		587
1015	BOOT:	588	BOOT:
1016	{	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
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	632	stash = gv_stashpv ("IO::AIO", 1);
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1021		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
1022	create_pipe ();	637	create_respipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}
1025		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
1026	void	646	void
1027	min_parallel (nthreads)	647	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	648	PROTOTYPE: $
		649	CODE:
		650	eio_set_max_poll_reqs (nreqs);
1030		651
1031	void	652	void
1032	max_parallel (nthreads)	653	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	654	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	655	CODE:
1041	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:
1042	max_outstanding = nreqs;	680	max_outstanding = maxreqs;
1043		681
1044	void	682	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1051	PPCODE:	685	PPCODE:
1052	{	686	{
1053	dREQ;	687	dREQ;
1054		688
1055	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1056	req->data = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	692	req->int1 = flags;
1059	req->mode = mode;	693	req->int2 = mode;
1060		694
1061	REQ_SEND;	695	REQ_SEND;
1062	}	696	}
1063		697
1064	void	698	void
1065	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1069	ALIAS:	701	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1073	PPCODE:	704	PPCODE:
1074	{	705	{
		706	int fd = extract_fd (fh, 0);
1075	dREQ;	707	dREQ;
1076		708
1077	req->type = ix;	709	req->type = ix;
1078	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1080		712
1081	REQ_SEND (req);	713	REQ_SEND (req);
1082	}	714	}
1083		715
1084	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: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	765	ALIAS:
1093	aio_read = REQ_READ	766	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1096	PPCODE:	769	PPCODE:
1097	{	770	{
1098	aio_req req;
1099	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1101		774	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		775
1105	if (dataoffset < 0)	776	if (dataoffset < 0)
1106	dataoffset += svlen;	777	dataoffset += svlen;
1107		778
1108	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1110		781
1111	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1112	{	783	{
1113	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1116	}	787	}
1117	else	788	else
1118	{	789	{
1119	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1120	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	793	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		794
1126	{	795	{
1127	dREQ;	796	dREQ;
1128		797
1129	req->type = ix;	798	req->type = ix;
1130	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	802	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
		805	req->stroffset = dataoffset;
1137		806
1138	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1139	{	808	{
1140	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	810	req->flags |= FLAG_SV2_RO_OFF;
1142	}	811	}
1143		812
1144	REQ_SEND;	813	REQ_SEND;
1145	}	814	}
1146	}	815	}
1147		816
1148	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
1149	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)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1156	PPCODE:	835	PPCODE:
1157	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1158	dREQ;	839	dREQ;
1159		840
1160	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1165	req->offset = in_offset;	846	req->offs = in_offset;
1166	req->length = length;	847	req->size = length;
1167		848
1168	REQ_SEND;	849	REQ_SEND;
1169	}	850	}
1170		851
1171	void	852	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1178	PPCODE:	855	PPCODE:
1179	{	856	{
		857	int fd = extract_fd (fh, 0);
1180	dREQ;	858	dREQ;
1181		859
1182	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1185	req->offset = offset;	863	req->offs = offset;
1186	req->length = length;	864	req->size = length;
1187		865
1188	REQ_SEND;	866	REQ_SEND;
1189	}	867	}
1190		868
1191	void	869	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	871	ALIAS:
1196	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1198	PPCODE:	874	PPCODE:
1199	{	875	{
1200	dREQ;	876	dREQ;
1201		877
1202	New (0, req->statdata, 1, Stat_t);	878	req->sv1 = newSVsv (fh_or_path);
1203	if (!req->statdata)
1204	{
1205	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");
1207	}
1208		879
1209	if (SvPOK (fh_or_path))	880	if (SvPOK (req->sv1))
1210	{	881	{
1211	req->type = ix;	882	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	884	}
1215	else	885	else
1216	{	886	{
1217	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	889	}
1221		890
1222	REQ_SEND;	891	REQ_SEND;
1223	}	892	}
1224		893
1225	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
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1010	ALIAS:
1230	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1233	PPCODE:	1014	PPCODE:
1234	{	1015	{
1235	dREQ;	1016	dREQ;
1236		1017
1237	req->type = ix;	1018	req->type = ix;
1238	req->data = newSVsv (pathname);	1019	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1020	req->ptr1 = SvPVbyte_nolen (req->sv1);
1240		1021
1241	REQ_SEND;	1022	REQ_SEND;
1242	}	1023	}
1243		1024
1244	void	1025	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1027	ALIAS:
1250	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1251	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1252	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1253	PPCODE:	1031	PPCODE:
1254	{	1032	{
1255	dREQ;	1033	dREQ;
1256		1034
1257	req->type = ix;	1035	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
1260	req->data = newSVsv (newpath);	1038	req->sv2 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1262		1040
1263	REQ_SEND;	1041	REQ_SEND;
1264	}	1042	}
1265		1043
1266	void	1044	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1046	PPCODE:
1271	{	1047	{
1272	dREQ;	1048	dREQ;
1273		1049
1274	req->type = REQ_SLEEP;	1050	req->type = EIO_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1051	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1053	req->int2 = (mode_t)mode;
		1054	req->offs = dev;
		1055
1278	REQ_SEND;	1056	REQ_SEND;
1279	}	1057	}
1280		1058
1281	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
1282	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1285	PPCODE:	1074	PPCODE:
1286	{	1075	{
1287	dREQ;	1076	dREQ;
1288		1077
1289	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
		1079
1290	req_send (req);	1080	req_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1082	}
1294		1083
1295	void	1084	void
1296	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1298	PPCODE:	1089	PPCODE:
1299	{	1090	{
1300	dREQ;	1091	dREQ;
1301		1092
1302	req->type = REQ_NOP;	1093	req->type = ix;
1303		1094
1304	REQ_SEND;	1095	REQ_SEND;
1305	}	1096	}
1306		1097
1307	void	1098	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1099	aioreq_pri (int pri = 0)
		1100	PROTOTYPE: ;$
1309	CODE:	1101	CODE:
		1102	RETVAL = next_pri;
		1103	if (items > 0)
		1104	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
		1108	}
		1109	OUTPUT:
		1110	RETVAL
		1111
		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;
1313		1119
1314	void	1120	void
1315	flush ()	1121	flush ()
1316	PROTOTYPE:	1122	PROTOTYPE:
1317	CODE:	1123	CODE:
1318	while (nreqs)	1124	while (eio_nreqs ())
1319	{	1125	{
1320	poll_wait ();	1126	poll_wait ();
1321	poll_cb ();	1127	poll_cb ();
1322	}	1128	}
1323		1129
1324	void	1130	int
1325	poll()	1131	poll()
1326	PROTOTYPE:	1132	PROTOTYPE:
1327	CODE:	1133	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();	1134	poll_wait ();
1331	poll_cb ();	1135	RETVAL = poll_cb ();
1332	}	1136	OUTPUT:
		1137	RETVAL
1333		1138
1334	int	1139	int
1335	poll_fileno()	1140	poll_fileno()
1336	PROTOTYPE:	1141	PROTOTYPE:
1337	CODE:	1142	CODE:
…		…
1349		1154
1350	void	1155	void
1351	poll_wait()	1156	poll_wait()
1352	PROTOTYPE:	1157	PROTOTYPE:
1353	CODE:	1158	CODE:
1354	if (nreqs)
1355	poll_wait ();	1159	poll_wait ();
1356		1160
1357	int	1161	int
1358	nreqs()	1162	nreqs()
1359	PROTOTYPE:	1163	PROTOTYPE:
1360	CODE:	1164	CODE:
1361	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1362	OUTPUT:	1166	OUTPUT:
1363	RETVAL	1167	RETVAL
1364		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
1365	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1366		1219
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		1221
1369	void	1222	void
1370	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1371	CODE:	1224	CODE:
1372	req_cancel (req);	1225	eio_cancel (req);
1373		1226
1374	void	1227	void
1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1376	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
1377	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1378	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1379		1242
1380	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1381		1244
1382	void	1245	void
1383	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1384	PPCODE:	1247	PPCODE:
1385	{	1248	{
1386	int i;	1249	int i;
1387	aio_req req;
1388		1250
1389	if (grp->fd == 2)	1251	if (grp->int1 == 2)
1390	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");
1391		1253
1392	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1393	{	1255	{
		1256	aio_req req;
		1257
1394	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1396		1260
1397	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1398		1262
1399	if (req)	1263	if (req)
1400	{	1264	eio_grp_add (grp, req);
1401	++grp->length;
1402	req->grp = grp;
1403
1404	req->grp_prev = 0;
1405	req->grp_next = grp->grp_first;
1406
1407	if (grp->grp_first)
1408	grp->grp_first->grp_prev = req;
1409
1410	grp->grp_first = req;
1411	}	1265	}
1412	}
1413	}	1266	}
		1267
		1268	void
		1269	cancel_subs (aio_req_ornot req)
		1270	CODE:
		1271	req_cancel_subs (req);
1414		1272
1415	void	1273	void
1416	result (aio_req grp, ...)	1274	result (aio_req grp, ...)
1417	CODE:	1275	CODE:
1418	{	1276	{
1419	int i;	1277	int i;
		1278	AV *av;
		1279
		1280	grp->errorno = errno;
		1281
1420	AV *av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1421		1284
1422	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1424		1287
1425	SvREFCNT_dec (grp->data);	1288	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	1289	grp->sv1 = (SV *)av;
1427	}	1290	}
		1291
		1292	void
		1293	errno (aio_req grp, int errorno = errno)
		1294	CODE:
		1295	grp->errorno = errorno;
1428		1296
1429	void	1297	void
1430	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1431	CODE:	1299	CODE:
1432	grp->fd2 = limit;	1300	eio_grp_limit (grp, limit);
1433	aio_grp_feed (grp);
1434		1301
1435	void	1302	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	1304	CODE:
1438	{	1305	{
1439	SvREFCNT_dec (grp->fh2);	1306	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1441		1309
1442	if (grp->fd2 <= 0)	1310	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	1311	grp->int2 = 2;
1444		1312
1445	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1446	}	1314	}
1447		1315

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