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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.153 by root, Wed Jul 15 01:36:04 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	/* perl namespace pollution */
33	# if __linux	21	#undef VERSION
34	# include <sys/sendfile.h>	22
35	# elif __freebsd	23	#ifdef _WIN32
36	# include <sys/socket.h>	24
37	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
38	# elif __hpux	26	# undef malloc
39	# include <sys/socket.h>	27	# undef free
40	# elif __solaris /* not yet */	28
41	# include <sys/sendfile.h>	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
42	# else	61	#else
43	# error sendfile support requested but not available	62
44	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
45	#endif	70	#endif
46		71
47	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
48	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
49	# define NAME_MAX 4096	74	#undef readdir
		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
50	#endif	89	#endif
51		90
52	#if __ia64	91	/*****************************************************************************/
53	# define STACKSIZE 65536	92
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	93	#if __GNUC__ >= 3
55	# define STACKSIZE PTHREAD_STACK_MIN	94	# define expect(expr,value) __builtin_expect ((expr),(value))
56	#else	95	#else
57	# define STACKSIZE 16384	96	# define expect(expr,value) (expr)
58	#endif	97	#endif
59		98
60	/* buffer size for various temporary buffers */	99	#define expect_false(expr) expect ((expr) != 0, 0)
61	#define AIO_BUFSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
62		101
63	#define dBUF \	102	/*****************************************************************************/
64	char *aio_buf = malloc (AIO_BUFSIZE); \
65	if (!aio_buf) \
66	return -1;
67		103
68	#define fBUF free (aio_buf)	104	static HV *stash;
69		105	typedef SV SV8; /* byte-sv, used for argument-checking */
70	enum {	106	typedef int aio_rfd; /* read file desriptor */
71	REQ_QUIT,	107	typedef int aio_wfd; /* write file descriptor */
72	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
78	REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,
80	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,
82	};
83		108
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
85	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
86		111
87	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
88	{
89	struct aio_cb *volatile next;
90
91	SV *data, *callback;	113	SV *callback; \
92	SV *fh, *fh2;	114	SV *sv1, *sv2; \
93	void *dataptr, *data2ptr;
94	Stat_t *statdata;
95	off_t offset;
96	size_t length;
97	ssize_t result;
98
99	STRLEN dataoffset;	115	STRLEN stroffset; \
100	int type;	116	SV *self;
101	int fd, fd2;
102	int errorno;
103	mode_t mode; /* open */
104		117
105	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
106	unsigned char pri;
107		119
108	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
110	} 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)
111		151
112	enum {	152	enum {
113	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
114	};	154	};
115		155
		156	#include "libeio/eio.c"
		157
116	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
117	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
118		160
119	enum {	161	static SV *on_next_submit;
120	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
121	PRI_MAX = 4,
122
123	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};
127
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129
130	static int started, wanted;
131	static volatile int nreqs;
132	static int max_outstanding = 1<<30;	163	static int max_outstanding;
		164
133	static int respipe [2];	165	static int respipe_osf [2];
		166	static s_epipe respipe;
134		167
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	168	static void req_destroy (aio_req req);
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
144
145	/*
146	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.
149	*/
150	typedef struct {
151	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
152	int size;
153	} reqq;
154
155	static reqq req_queue;
156	static reqq res_queue;
157
158	int reqq_push (reqq *q, aio_req req)
159	{
160	int pri = req->pri;
161	req->next = 0;
162
163	if (q->qe[pri])
164	{
165	q->qe[pri]->next = req;
166	q->qe[pri] = req;
167	}
168	else
169	q->qe[pri] = q->qs[pri] = req;
170
171	return q->size++;
172	}
173
174	aio_req reqq_shift (reqq *q)
175	{
176	int pri;
177
178	if (!q->size)
179	return 0;
180
181	--q->size;
182
183	for (pri = NUM_PRI; pri--; )
184	{
185	aio_req req = q->qs[pri];
186
187	if (req)
188	{
189	if (!(q->qs[pri] = req->next))
190	q->qe[pri] = 0;
191
192	return req;
193	}
194	}
195
196	abort ();
197	}
198
199	static void req_invoke (aio_req req);	169	static void req_cancel (aio_req req);
200	static void req_free (aio_req req);	170
		171	static void want_poll (void)
		172	{
		173	/* write a dummy byte to the pipe so fh becomes ready */
		174	s_epipe_signal (&respipe);
		175	}
		176
		177	static void done_poll (void)
		178	{
		179	/* read any signals sent by the worker threads */
		180	s_epipe_drain (&respipe);
		181	}
201		182
202	/* must be called at most once */	183	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	184	static SV *req_sv (aio_req req, const char *klass)
204	{	185	{
205	if (!req->self)	186	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	205	}
225		206
226	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
227	{	208	{
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	209	if (grp->sv2 && SvOK (grp->sv2))
229	{	210	{
230	int old_len = grp->length;
231
232	if (grp->fh2 && SvOK (grp->fh2))
233	{
234	dSP;	211	dSP;
235		212
236	ENTER;	213	ENTER;
237	SAVETMPS;	214	SAVETMPS;
238	PUSHMARK (SP);	215	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	217	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	219	SPAGAIN;
243	FREETMPS;	220	FREETMPS;
244	LEAVE;	221	LEAVE;
245	}
246
247	/* stop if no progress has been made */
248	if (old_len == grp->length)
249	{
250	SvREFCNT_dec (grp->fh2);
251	grp->fh2 = 0;
252	break;
253	}
254	}	222	}
255	}	223	}
256		224
257	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
258	{	226	{
259	--grp->length;	227	eio_submit (req);
260		228
261	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
262	aio_grp_feed (grp);
263
264	/* finish, if done */
265	if (!grp->length && grp->fd)
266	{	230	{
267	req_invoke (grp);	231	dSP;
268	req_free (grp);	232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
269	}	239	}
270	}	240	}
271		241
272	static void poll_wait ()	242	static int req_invoke (eio_req *req)
273	{	243	{
274	fd_set rfd;	244	dSP;
275		245
276	while (nreqs)	246	if (req->flags & FLAG_SV2_RO_OFF)
		247	SvREADONLY_off (req->sv2);
		248
		249	if (!EIO_CANCELLED (req) && req->callback)
277	{	250	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)
298	{
299	dSP;
300
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{
303	errno = req->errorno;
304
305	ENTER;	251	ENTER;
306	SAVETMPS;	252	SAVETMPS;
307	PUSHMARK (SP);	253	PUSHMARK (SP);
308	EXTEND (SP, 1);	254	EXTEND (SP, 1);
309		255
310	switch (req->type)	256	switch (req->type)
311	{	257	{
312	case REQ_READDIR:	258	case EIO_READDIR:
313	{	259	{
314	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
315		261
316	if (req->result >= 0)	262	if (req->result >= 0)
317	{	263	{
		264	int i;
318	char *buf = req->data2ptr;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
319	AV *av = newAV ();	267	AV *av = newAV ();
320		268
321	while (req->result)	269	av_extend (av, req->result - 1);
		270
		271	for (i = 0; i < req->result; ++i)
322	{	272	{
		273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
		297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
323	SV *sv = newSVpv (buf, 0);	303	SV *name = newSVpv (names, 0);
324
325	av_push (av, sv);	304	av_store (av, i, name);
326	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
327	req->result--;	306	}
328	}	307	}
329		308
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	310	}
332		311
333	PUSHs (rv);	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
334	}	316	}
335	break;	317	break;
336		318
337	case REQ_OPEN:	319	case EIO_OPEN:
338	{	320	{
339	/* convert fd to fh */	321	/* convert fd to fh */
340	SV *fh;	322	SV *fh = &PL_sv_undef;
341		323
342	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
343	PUTBACK;	325	{
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
345	SPAGAIN;	327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, stash, sym, symlen, 0);
346		333
347	fh = SvREFCNT_inc (POPs);	334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
348		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
349	PUSHMARK (SP);	346	PUSHs (fh);
350	XPUSHs (sv_2mortal (fh));
351	}	347	}
352	break;	348	break;
353		349
354	case REQ_GROUP:	350	case EIO_GROUP:
355	req->fd = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
356		352
357	if (req->data)	353	if (req->sv1)
358	{	354	{
359	int i;	355	int i;
360	AV *av = (AV *)req->data;	356	AV *av = (AV *)req->sv1;
361		357
362	EXTEND (SP, AvFILL (av) + 1);	358	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
365	}	361	}
366	break;	362	break;
367		363
368	case REQ_NOP:	364	case EIO_NOP:
369	case REQ_BUSY:	365	case EIO_BUSY:
370	break;	366	break;
		367
		368	case EIO_READLINK:
		369	if (req->result > 0)
		370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		371	break;
		372
		373	case EIO_STAT:
		374	case EIO_LSTAT:
		375	case EIO_FSTAT:
		376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		377	PL_laststatval = req->result;
		378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		379	PUSHs (sv_2mortal (newSViv (req->result)));
		380	break;
		381
		382	case EIO_READ:
		383	{
		384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
		390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
371		396
372	default:	397	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	399	break;
375	}	400	}
376		401
		402	errno = req->errorno;
377		403
378	PUTBACK;	404	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
380	SPAGAIN;	406	SPAGAIN;
381		407
382	FREETMPS;	408	FREETMPS;
383	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
384	}	412	}
385		413
386	if (req->grp)	414	return !!SvTRUE (ERRSV);
387	{
388	aio_req grp = req->grp;
389
390	/* unlink request */
391	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
392	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
393
394	if (grp->grp_first == req)
395	grp->grp_first = req->grp_next;
396
397	aio_grp_dec (grp);
398	}
399
400	if (SvTRUE (ERRSV))
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	415	}
406		416
407	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
408	{	418	{
409	if (req->self)	419	if (req->self)
410	{	420	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
413	}	423	}
414		424
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	425	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420
421	if (req->type == REQ_READDIR && req->result >= 0)
422	free (req->data2ptr);
423		428
424	Safefree (req);	429	Safefree (req);
425	}	430	}
426		431
427	static void req_cancel (aio_req req)	432	static void req_cancel_subs (aio_req grp)
428	{	433	{
429	req->flags |= FLAG_CANCELLED;	434	aio_req sub;
430		435
431	if (req->type == REQ_GROUP)	436	if (grp->type != EIO_GROUP)
		437	return;
		438
		439	SvREFCNT_dec (grp->sv2);
		440	grp->sv2 = 0;
		441
		442	eio_grp_cancel (grp);
		443	}
		444
		445	static void
		446	create_respipe (void)
		447	{
		448	if (s_epipe_renew (&respipe))
		449	croak ("unable to initialize result pipe");
		450
		451	respipe_osf [0] = S_TO_SOCKET (respipe.fd [0]);
		452	respipe_osf [1] = S_TO_SOCKET (respipe.fd [1]);
		453	}
		454
		455	static void poll_wait (void)
		456	{
		457	while (eio_nreqs ())
432	{	458	{
433	aio_req sub;	459	int size;
434		460
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	461	X_LOCK (reslock);
436	req_cancel (sub);	462	size = res_queue.size;
		463	X_UNLOCK (reslock);
		464
		465	if (size)
		466	return;
		467
		468	etp_maybe_start_thread ();
		469
		470	s_epipe_wait (&respipe);
437	}	471	}
438	}	472	}
439		473
440	static int poll_cb ()	474	static int poll_cb (void)
441	{	475	{
442	dSP;
443	int count = 0;
444	int do_croak = 0;
445	aio_req req;
446
447	for (;;)	476	for (;;)
448	{	477	{
449	pthread_mutex_lock (&reslock);	478	int res = eio_poll ();
450	req = reqq_shift (&res_queue);
451		479
452	if (req)	480	if (res > 0)
453	{
454	if (!res_queue.size)
455	{
456	/* read any signals sent by the worker threads */
457	char buf [32];
458	while (read (respipe [0], buf, 32) == 32)
459	;
460	}
461	}
462
463	pthread_mutex_unlock (&reslock);
464
465	if (!req)
466	break;	481	croak (0);
467		482
468	--nreqs;	483	if (!max_outstanding || max_outstanding > eio_nreqs ())
		484	return res;
469		485
470	if (req->type == REQ_QUIT)	486	poll_wait ();
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	487	}
499
500	return count;
501	}
502
503	static void *aio_proc(void *arg);
504
505	static void start_thread (void)
506	{
507	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;
510
511	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}
585
586	static void create_pipe ()
587	{
588	if (pipe (respipe))
589	croak ("unable to initialize result pipe");
590
591	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593
594	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
595	croak ("cannot set result pipe to nonblocking mode");
596	}
597
598	/*****************************************************************************/
599	/* work around various missing functions */
600
601	#if !HAVE_PREADWRITE
602	# define pread aio_pread
603	# define pwrite aio_pwrite
604
605	/*
606	* make our pread/pwrite safe against themselves, but not against
607	* normal read/write by using a mutex. slows down execution a lot,
608	* but that's your problem, not mine.
609	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
611
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{
614	ssize_t res;
615	off_t ooffset;
616
617	pthread_mutex_lock (&preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);
623
624	return res;
625	}
626
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{
629	ssize_t res;
630	off_t ooffset;
631
632	pthread_mutex_lock (&preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);
638
639	return res;
640	}
641	#endif
642
643	#if !HAVE_FDATASYNC
644	# define fdatasync fsync
645	#endif
646
647	#if !HAVE_READAHEAD
648	# define readahead aio_readahead
649
650	static ssize_t readahead (int fd, off_t offset, size_t count)
651	{
652	dBUF;
653
654	while (count > 0)
655	{
656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
657
658	pread (fd, aio_buf, len, offset);
659	offset += len;
660	count -= len;
661	}
662
663	fBUF;
664
665	errno = 0;
666	}
667	#endif
668
669	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r
671
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
673
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{
676	struct dirent *e;
677	int errorno;
678
679	pthread_mutex_lock (&readdirlock);
680
681	e = readdir (dirp);
682	errorno = errno;
683
684	if (e)
685	{
686	*res = ent;
687	strcpy (ent->d_name, e->d_name);
688	}
689	else
690	*res = 0;
691
692	pthread_mutex_unlock (&readdirlock);
693
694	errno = errorno;
695	return e ? 0 : -1;
696	}
697	#endif
698
699	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
701	{
702	ssize_t res;
703
704	if (!count)
705	return 0;
706
707	#if HAVE_SENDFILE
708	# if __linux
709	res = sendfile (ofd, ifd, &offset, count);
710
711	# elif __freebsd
712	/*
713	* Of course, the freebsd sendfile is a dire hack with no thoughts
714	* wasted on making it similar to other I/O functions.
715	*/
716	{
717	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719
720	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
722	res = sbytes;
723	}
724
725	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);
727
728	# elif __solaris
729	{
730	struct sendfilevec vec;
731	size_t sbytes;
732
733	vec.sfv_fd = ifd;
734	vec.sfv_flag = 0;
735	vec.sfv_off = offset;
736	vec.sfv_len = count;
737
738	res = sendfilev (ofd, &vec, 1, &sbytes);
739
740	if (res < 0 && sbytes)
741	res = sbytes;
742	}
743
744	# endif
745	#else
746	res = -1;
747	errno = ENOSYS;
748	#endif
749
750	if (res < 0
751	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
752	#if __solaris
753	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
754	#endif
755	)
756	)
757	{
758	/* emulate sendfile. this is a major pain in the ass */
759	dBUF;
760
761	res = 0;
762
763	while (count)
764	{
765	ssize_t cnt;
766
767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
768
769	if (cnt <= 0)
770	{
771	if (cnt && !res) res = -1;
772	break;
773	}
774
775	cnt = write (ofd, aio_buf, cnt);
776
777	if (cnt <= 0)
778	{
779	if (cnt && !res) res = -1;
780	break;
781	}
782
783	offset += cnt;
784	res += cnt;
785	count -= cnt;
786	}
787
788	fBUF;
789	}
790
791	return res;
792	}
793
794	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)
796	{
797	DIR *dirp;
798	union
799	{
800	struct dirent d;
801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
802	} *u;
803	struct dirent *entp;
804	char *name, *names;
805	int memlen = 4096;
806	int memofs = 0;
807	int res = 0;
808	int errorno;
809
810	dirp = opendir (path);
811	if (!dirp)
812	return -1;
813
814	u = malloc (sizeof (*u));
815	names = malloc (memlen);
816
817	if (u && names)
818	for (;;)
819	{
820	errno = 0;
821	readdir_r (dirp, &u->d, &entp);
822
823	if (!entp)
824	break;
825
826	name = entp->d_name;
827
828	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
829	{
830	int len = strlen (name) + 1;
831
832	res++;
833
834	while (memofs + len > memlen)
835	{
836	memlen *= 2;
837	names = realloc (names, memlen);
838	if (!names)
839	break;
840	}
841
842	memcpy (names + memofs, name, len);
843	memofs += len;
844	}
845	}
846
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)
852	{
853	free (names);
854	errno = errorno;
855	res = -1;
856	}
857
858	*namesp = (void *)names;
859	return res;
860	}
861
862	/*****************************************************************************/
863
864	static void *aio_proc (void *thr_arg)
865	{
866	aio_req req;
867	int type;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872
873	for (;;)
874	{
875	req = reqq_shift (&req_queue);
876
877	if (req)
878	break;
879
880	pthread_cond_wait (&reqwait, &reqlock);
881	}
882
883	pthread_mutex_unlock (&reqlock);
884
885	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887
888	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)
890	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
893
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
896
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
900
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
908
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
912
913	case REQ_BUSY:
914	{
915	struct timeval tv;
916
917	tv.tv_sec = req->fd;
918	tv.tv_usec = req->fd2;
919
920	req->result = select (0, 0, 0, 0, &tv);
921	}
922
923	case REQ_GROUP:
924	case REQ_NOP:
925	case REQ_QUIT:
926	break;
927
928	default:
929	req->result = ENOSYS;
930	break;
931	}
932
933	req->errorno = errno;
934
935	pthread_mutex_lock (&reslock);
936
937	if (!reqq_push (&res_queue, req))
938	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);
940
941	pthread_mutex_unlock (&reslock);
942	}
943	while (type != REQ_QUIT);
944
945	return 0;
946	}
947
948	/*****************************************************************************/
949
950	static void atfork_prepare (void)
951	{
952	pthread_mutex_lock (&reqlock);
953	pthread_mutex_lock (&reslock);
954	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);
956	#endif
957	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);
959	#endif
960	}
961
962	static void atfork_parent (void)
963	{
964	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);
966	#endif
967	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);
969	#endif
970	pthread_mutex_unlock (&reslock);
971	pthread_mutex_unlock (&reqlock);
972	}	488	}
973		489
974	static void atfork_child (void)	490	static void atfork_child (void)
975	{	491	{
976	aio_req prv;
977
978	started = 0;
979
980	while (prv = reqq_shift (&req_queue))
981	req_free (prv);
982
983	while (prv = reqq_shift (&res_queue))
984	req_free (prv);
985
986	close (respipe [0]);
987	close (respipe [1]);
988	create_pipe ();	492	create_respipe ();
		493	}
989		494
990	atfork_parent ();	495	static SV *
		496	get_cb (SV *cb_sv)
		497	{
		498	SvGETMAGIC (cb_sv);
		499	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
991	}	500	}
992		501
993	#define dREQ \	502	#define dREQ \
		503	SV *cb_cv; \
994	aio_req req; \	504	aio_req req; \
995	int req_pri = next_pri; \	505	int req_pri = next_pri; \
996	next_pri = DEFAULT_PRI + PRI_BIAS; \	506	next_pri = EIO_PRI_DEFAULT; \
997	\	507	\
998	if (SvOK (callback) && !SvROK (callback)) \	508	cb_cv = get_cb (callback); \
999	croak ("callback must be undef or of reference type"); \
1000	\	509	\
1001	Newz (0, req, 1, aio_cb); \	510	Newz (0, req, 1, eio_req); \
1002	if (!req) \	511	if (!req) \
1003	croak ("out of memory during aio_req allocation"); \	512	croak ("out of memory during eio_req allocation"); \
1004	\	513	\
1005	req->callback = newSVsv (callback); \	514	req->callback = SvREFCNT_inc (cb_cv); \
1006	req->pri = req_pri	515	req->pri = req_pri
1007		516
1008	#define REQ_SEND \	517	#define REQ_SEND \
		518	PUTBACK; \
1009	req_send (req); \	519	req_submit (req); \
		520	SPAGAIN; \
1010	\	521	\
1011	if (GIMME_V != G_VOID) \	522	if (GIMME_V != G_VOID) \
1012	XPUSHs (req_sv (req, AIO_REQ_KLASS));	523	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1013		524
1014	MODULE = IO::AIO PACKAGE = IO::AIO	525	MODULE = IO::AIO PACKAGE = IO::AIO
1015		526
1016	PROTOTYPES: ENABLE	527	PROTOTYPES: ENABLE
1017		528
1018	BOOT:	529	BOOT:
1019	{	530	{
		531	static const struct {
		532	const char *name;
		533	IV iv;
		534	} *civ, const_iv[] = {
		535	# define const_iv(name, value) { # name, (IV) value },
		536	# define const_eio(name) { # name, (IV) EIO_ ## name },
		537	const_iv (EXDEV , EXDEV)
		538	const_iv (ENOSYS , ENOSYS)
		539	const_iv (O_RDONLY, O_RDONLY)
		540	const_iv (O_WRONLY, O_WRONLY)
		541	const_iv (O_CREAT , O_CREAT)
		542	const_iv (O_TRUNC , O_TRUNC)
		543	#ifndef _WIN32
		544	const_iv (S_IFIFO , S_IFIFO)
		545	#endif
		546	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		547	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		548	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		549	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		550	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		551	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		552
		553	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		554	const_eio (SYNC_FILE_RANGE_WRITE)
		555	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		556
		557	const_eio (READDIR_DENTS)
		558	const_eio (READDIR_DIRS_FIRST)
		559	const_eio (READDIR_STAT_ORDER)
		560	const_eio (READDIR_FOUND_UNKNOWN)
		561
		562	const_eio (DT_UNKNOWN)
		563	const_eio (DT_FIFO)
		564	const_eio (DT_CHR)
		565	const_eio (DT_DIR)
		566	const_eio (DT_BLK)
		567	const_eio (DT_REG)
		568	const_eio (DT_LNK)
		569	const_eio (DT_SOCK)
		570	const_eio (DT_WHT)
		571	};
		572
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	573	stash = gv_stashpv ("IO::AIO", 1);
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1024		574
		575	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		576	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		577
1025	create_pipe ();	578	create_respipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1027	}
1028		579
		580	if (eio_init (want_poll, done_poll) < 0)
		581	croak ("IO::AIO: unable to initialise eio library");
		582
		583	/* atfork child called in fifo order, so before eio's handler */
		584	X_THREAD_ATFORK (0, 0, atfork_child);
		585	}
		586
1029	void	587	void
1030	min_parallel (nthreads)	588	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	589	PROTOTYPE: $
		590	CODE:
		591	eio_set_max_poll_reqs (nreqs);
1033		592
1034	void	593	void
1035	max_parallel (nthreads)	594	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	595	PROTOTYPE: $
1038
1039	int
1040	max_outstanding (nreqs)
1041	int nreqs
1042	PROTOTYPE: $
1043	CODE:	596	CODE:
1044	RETVAL = max_outstanding;	597	eio_set_max_poll_time (nseconds);
		598
		599	void
		600	min_parallel (int nthreads)
		601	PROTOTYPE: $
		602	CODE:
		603	eio_set_min_parallel (nthreads);
		604
		605	void
		606	max_parallel (int nthreads)
		607	PROTOTYPE: $
		608	CODE:
		609	eio_set_max_parallel (nthreads);
		610
		611	void
		612	max_idle (int nthreads)
		613	PROTOTYPE: $
		614	CODE:
		615	eio_set_max_idle (nthreads);
		616
		617	void
		618	max_outstanding (int maxreqs)
		619	PROTOTYPE: $
		620	CODE:
1045	max_outstanding = nreqs;	621	max_outstanding = maxreqs;
1046		622
1047	void	623	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	624	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1049	SV * pathname
1050	int flags
1051	int mode
1052	SV * callback
1053	PROTOTYPE: $$$;$	625	PROTOTYPE: $$$;$
1054	PPCODE:	626	PPCODE:
1055	{	627	{
1056	dREQ;	628	dREQ;
1057		629
1058	req->type = REQ_OPEN;	630	req->type = EIO_OPEN;
1059	req->data = newSVsv (pathname);	631	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	632	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	633	req->int1 = flags;
1062	req->mode = mode;	634	req->int2 = mode;
1063		635
1064	REQ_SEND;	636	REQ_SEND;
1065	}	637	}
1066		638
1067	void	639	void
1068	aio_close (fh,callback=&PL_sv_undef)	640	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$	641	PROTOTYPE: $;$
1072	ALIAS:	642	ALIAS:
1073	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC	643	aio_fsync = EIO_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC	644	aio_fdatasync = EIO_FDATASYNC
1076	PPCODE:	645	PPCODE:
1077	{	646	{
		647	int fd = s_fileno_croak (fh, 0);
1078	dREQ;	648	dREQ;
1079		649
1080	req->type = ix;	650	req->type = ix;
1081	req->fh = newSVsv (fh);	651	req->sv1 = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	652	req->int1 = fd;
1083		653
1084	REQ_SEND (req);	654	REQ_SEND (req);
1085	}	655	}
1086		656
1087	void	657	void
		658	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		659	PROTOTYPE: $$$$;$
		660	PPCODE:
		661	{
		662	int fd = s_fileno_croak (fh, 0);
		663	dREQ;
		664
		665	req->type = EIO_SYNC_FILE_RANGE;
		666	req->sv1 = newSVsv (fh);
		667	req->int1 = fd;
		668	req->offs = offset;
		669	req->size = nbytes;
		670	req->int2 = flags;
		671
		672	REQ_SEND (req);
		673	}
		674
		675	void
		676	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		677	PROTOTYPE: $;$
		678	PPCODE:
		679	{
		680	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		681	int fd = s_fileno_croak (fh, 0);
		682	dREQ;
		683
		684	if (close_pipe < 0)
		685	{
		686	int pipefd [2];
		687
		688	if (pipe (pipefd) < 0
		689	|| close (pipefd [1]) < 0
		690	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		691	abort (); /*D*/
		692
		693	close_pipe = pipefd [0];
		694	}
		695
		696	req->type = EIO_DUP2;
		697	req->int1 = close_pipe;
		698	req->sv2 = newSVsv (fh);
		699	req->int2 = fd;
		700
		701	REQ_SEND (req);
		702	}
		703
		704	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	705	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:	706	ALIAS:
1096	aio_read = REQ_READ	707	aio_read = EIO_READ
1097	aio_write = REQ_WRITE	708	aio_write = EIO_WRITE
1098	PROTOTYPE: $$$$$;$	709	PROTOTYPE: $$$$$;$
1099	PPCODE:	710	PPCODE:
1100	{	711	{
1101	aio_req req;
1102	STRLEN svlen;	712	STRLEN svlen;
		713	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1103	char *svptr = SvPVbyte (data, svlen);	714	char *svptr = SvPVbyte (data, svlen);
1104		715	UV len = SvUV (length);
1105	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);
1107		716
1108	if (dataoffset < 0)	717	if (dataoffset < 0)
1109	dataoffset += svlen;	718	dataoffset += svlen;
1110		719
1111	if (dataoffset < 0 || dataoffset > svlen)	720	if (dataoffset < 0 || dataoffset > svlen)
1112	croak ("data offset outside of string");	721	croak ("dataoffset outside of data scalar");
1113		722
1114	if (ix == REQ_WRITE)	723	if (ix == EIO_WRITE)
1115	{	724	{
1116	/* write: check length and adjust. */	725	/* write: check length and adjust. */
1117	if (length < 0 || length + dataoffset > svlen)	726	if (!SvOK (length) || len + dataoffset > svlen)
1118	length = svlen - dataoffset;	727	len = svlen - dataoffset;
1119	}	728	}
1120	else	729	else
1121	{	730	{
1122	/* read: grow scalar as necessary */	731	/* read: check type and grow scalar as necessary */
		732	SvUPGRADE (data, SVt_PV);
1123	svptr = SvGROW (data, length + dataoffset);	733	svptr = SvGROW (data, len + dataoffset + 1);
1124	}	734	}
1125
1126	if (length < 0)
1127	croak ("length must not be negative");
1128		735
1129	{	736	{
1130	dREQ;	737	dREQ;
1131		738
1132	req->type = ix;	739	req->type = ix;
1133	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	741	req->int1 = fd;
1135	: IoOFP (sv_2io (fh)));	742	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136	req->offset = offset;	743	req->size = len;
1137	req->length = length;
1138	req->data = SvREFCNT_inc (data);	744	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	745	req->ptr2 = (char *)svptr + dataoffset;
		746	req->stroffset = dataoffset;
1140		747
1141	if (!SvREADONLY (data))	748	if (!SvREADONLY (data))
1142	{	749	{
1143	SvREADONLY_on (data);	750	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	751	req->flags |= FLAG_SV2_RO_OFF;
1145	}	752	}
1146		753
1147	REQ_SEND;	754	REQ_SEND;
1148	}	755	}
1149	}	756	}
1150		757
1151	void	758	void
		759	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		760	PROTOTYPE: $$;$
		761	PPCODE:
		762	{
		763	SV *data;
		764	dREQ;
		765
		766	req->type = EIO_READLINK;
		767	req->sv1 = newSVsv (path);
		768	req->ptr1 = SvPVbyte_nolen (req->sv1);
		769
		770	REQ_SEND;
		771	}
		772
		773	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	774	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1153	SV * out_fh
1154	SV * in_fh
1155	UV in_offset
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$	775	PROTOTYPE: $$$$;$
1159	PPCODE:	776	PPCODE:
1160	{	777	{
		778	int ifd = s_fileno_croak (in_fh , 0);
		779	int ofd = s_fileno_croak (out_fh, 1);
1161	dREQ;	780	dREQ;
1162		781
1163	req->type = REQ_SENDFILE;	782	req->type = EIO_SENDFILE;
1164	req->fh = newSVsv (out_fh);	783	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	784	req->int1 = ofd;
1166	req->fh2 = newSVsv (in_fh);	785	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	786	req->int2 = ifd;
1168	req->offset = in_offset;	787	req->offs = in_offset;
1169	req->length = length;	788	req->size = length;
1170		789
1171	REQ_SEND;	790	REQ_SEND;
1172	}	791	}
1173		792
1174	void	793	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	794	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$	795	PROTOTYPE: $$$;$
1181	PPCODE:	796	PPCODE:
1182	{	797	{
		798	int fd = s_fileno_croak (fh, 0);
1183	dREQ;	799	dREQ;
1184		800
1185	req->type = REQ_READAHEAD;	801	req->type = EIO_READAHEAD;
1186	req->fh = newSVsv (fh);	802	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	803	req->int1 = fd;
1188	req->offset = offset;	804	req->offs = offset;
1189	req->length = length;	805	req->size = length;
1190		806
1191	REQ_SEND;	807	REQ_SEND;
1192	}	808	}
1193		809
1194	void	810	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	811	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	812	ALIAS:
1199	aio_stat = REQ_STAT	813	aio_stat = EIO_STAT
1200	aio_lstat = REQ_LSTAT	814	aio_lstat = EIO_LSTAT
1201	PPCODE:	815	PPCODE:
1202	{	816	{
1203	dREQ;	817	dREQ;
1204		818
1205	New (0, req->statdata, 1, Stat_t);	819	req->sv1 = newSVsv (fh_or_path);
1206	if (!req->statdata)
1207	{
1208	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");
1210	}
1211		820
1212	if (SvPOK (fh_or_path))	821	if (SvPOK (req->sv1))
1213	{	822	{
1214	req->type = ix;	823	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	825	}
1218	else	826	else
1219	{	827	{
1220	req->type = REQ_FSTAT;	828	req->type = EIO_FSTAT;
1221	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	829	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	830	}
1224		831
1225	REQ_SEND;	832	REQ_SEND;
1226	}	833	}
1227		834
1228	void	835	void
		836	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		837	PPCODE:
		838	{
		839	dREQ;
		840
		841	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		842	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		843	req->sv1 = newSVsv (fh_or_path);
		844
		845	if (SvPOK (req->sv1))
		846	{
		847	req->type = EIO_UTIME;
		848	req->ptr1 = SvPVbyte_nolen (req->sv1);
		849	}
		850	else
		851	{
		852	req->type = EIO_FUTIME;
		853	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		854	}
		855
		856	REQ_SEND;
		857	}
		858
		859	void
		860	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		861	PPCODE:
		862	{
		863	dREQ;
		864
		865	req->sv1 = newSVsv (fh_or_path);
		866	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		867
		868	if (SvPOK (req->sv1))
		869	{
		870	req->type = EIO_TRUNCATE;
		871	req->ptr1 = SvPVbyte_nolen (req->sv1);
		872	}
		873	else
		874	{
		875	req->type = EIO_FTRUNCATE;
		876	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		877	}
		878
		879	REQ_SEND;
		880	}
		881
		882	void
		883	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		884	ALIAS:
		885	aio_chmod = EIO_CHMOD
		886	aio_mkdir = EIO_MKDIR
		887	PPCODE:
		888	{
		889	dREQ;
		890
		891	req->int2 = mode;
		892	req->sv1 = newSVsv (fh_or_path);
		893
		894	if (SvPOK (req->sv1))
		895	{
		896	req->type = ix;
		897	req->ptr1 = SvPVbyte_nolen (req->sv1);
		898	}
		899	else
		900	{
		901	req->type = EIO_FCHMOD;
		902	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		903	}
		904
		905	REQ_SEND;
		906	}
		907
		908	void
		909	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		910	PPCODE:
		911	{
		912	dREQ;
		913
		914	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		915	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		916	req->sv1 = newSVsv (fh_or_path);
		917
		918	if (SvPOK (req->sv1))
		919	{
		920	req->type = EIO_CHOWN;
		921	req->ptr1 = SvPVbyte_nolen (req->sv1);
		922	}
		923	else
		924	{
		925	req->type = EIO_FCHOWN;
		926	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		927	}
		928
		929	REQ_SEND;
		930	}
		931
		932	void
		933	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		934	PPCODE:
		935	{
		936	dREQ;
		937
		938	req->type = EIO_READDIR;
		939	req->sv1 = newSVsv (pathname);
		940	req->ptr1 = SvPVbyte_nolen (req->sv1);
		941	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		942
		943	if (flags & EIO_READDIR_DENTS)
		944	req->int1 |= EIO_READDIR_CUSTOM2;
		945
		946	REQ_SEND;
		947	}
		948
		949	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	950	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	951	ALIAS:
1233	aio_unlink = REQ_UNLINK	952	aio_unlink = EIO_UNLINK
1234	aio_rmdir = REQ_RMDIR	953	aio_rmdir = EIO_RMDIR
1235	aio_readdir = REQ_READDIR	954	aio_readdir = EIO_READDIR
1236	PPCODE:	955	PPCODE:
1237	{	956	{
1238	dREQ;	957	dREQ;
1239		958
1240	req->type = ix;	959	req->type = ix;
1241	req->data = newSVsv (pathname);	960	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962
		963	REQ_SEND;
		964	}
		965
		966	void
		967	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		968	ALIAS:
		969	aio_link = EIO_LINK
		970	aio_symlink = EIO_SYMLINK
		971	aio_rename = EIO_RENAME
		972	PPCODE:
		973	{
		974	dREQ;
		975
		976	req->type = ix;
		977	req->sv1 = newSVsv (oldpath);
		978	req->ptr1 = SvPVbyte_nolen (req->sv1);
		979	req->sv2 = newSVsv (newpath);
		980	req->ptr2 = SvPVbyte_nolen (req->sv2);
1243		981
1244	REQ_SEND;	982	REQ_SEND;
1245	}	983	}
1246		984
1247	void	985	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	986	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1249	SV * oldpath
1250	SV * newpath
1251	SV * callback
1252	ALIAS:
1253	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME
1256	PPCODE:	987	PPCODE:
1257	{	988	{
1258	dREQ;	989	dREQ;
1259		990
1260	req->type = ix;	991	req->type = EIO_MKNOD;
1261	req->fh = newSVsv (oldpath);	992	req->sv1 = newSVsv (pathname);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	993	req->ptr1 = SvPVbyte_nolen (req->sv1);
1263	req->data = newSVsv (newpath);	994	req->int2 = (mode_t)mode;
1264	req->dataptr = SvPVbyte_nolen (req->data);	995	req->offs = dev;
1265		996
1266	REQ_SEND;	997	REQ_SEND;
1267	}	998	}
1268		999
1269	void	1000	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1001	aio_busy (double delay, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1002	PPCODE:
1274	{	1003	{
1275	dREQ;	1004	dREQ;
1276		1005
1277	req->type = REQ_BUSY;	1006	req->type = EIO_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1007	req->nv1 = delay < 0. ? 0. : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1280		1008
1281	REQ_SEND;	1009	REQ_SEND;
1282	}	1010	}
1283		1011
1284	void	1012	void
1285	aio_group (callback=&PL_sv_undef)	1013	aio_group (SV *callback=&PL_sv_undef)
1286	SV * callback
1287	PROTOTYPE: ;$	1014	PROTOTYPE: ;$
1288	PPCODE:	1015	PPCODE:
1289	{	1016	{
1290	dREQ;	1017	dREQ;
1291		1018
1292	req->type = REQ_GROUP;	1019	req->type = EIO_GROUP;
		1020
1293	req_send (req);	1021	req_submit (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1022	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1023	}
1297		1024
1298	void	1025	void
1299	aio_nop (callback=&PL_sv_undef)	1026	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback	1027	ALIAS:
		1028	aio_nop = EIO_NOP
		1029	aio_sync = EIO_SYNC
1301	PPCODE:	1030	PPCODE:
1302	{	1031	{
1303	dREQ;	1032	dREQ;
1304		1033
1305	req->type = REQ_NOP;	1034	req->type = ix;
1306		1035
1307	REQ_SEND;	1036	REQ_SEND;
1308	}	1037	}
1309		1038
1310	void	1039	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1040	aioreq_pri (int pri = 0)
1312	CODE:	1041	PROTOTYPE: ;$
		1042	CODE:
		1043	RETVAL = next_pri;
		1044	if (items > 0)
		1045	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1046	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1047	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1048	next_pri = pri;
		1049	}
		1050	OUTPUT:
		1051	RETVAL
1316		1052
1317	void	1053	void
1318	aioreq_nice (int nice = 0)	1054	aioreq_nice (int nice = 0)
1319	CODE:	1055	CODE:
1320	nice = next_pri - nice;	1056	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1057	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1058	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1059	next_pri = nice;
1324		1060
1325	void	1061	void
1326	flush ()	1062	flush ()
1327	PROTOTYPE:	1063	PROTOTYPE:
1328	CODE:	1064	CODE:
1329	while (nreqs)	1065	while (eio_nreqs ())
1330	{	1066	{
1331	poll_wait ();	1067	poll_wait ();
1332	poll_cb ();	1068	poll_cb ();
1333	}	1069	}
1334		1070
1335	void	1071	int
1336	poll()	1072	poll()
1337	PROTOTYPE:	1073	PROTOTYPE:
1338	CODE:	1074	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1075	poll_wait ();
1342	poll_cb ();	1076	RETVAL = poll_cb ();
1343	}	1077	OUTPUT:
		1078	RETVAL
1344		1079
1345	int	1080	int
1346	poll_fileno()	1081	poll_fileno()
1347	PROTOTYPE:	1082	PROTOTYPE:
1348	CODE:	1083	CODE:
1349	RETVAL = respipe [0];	1084	RETVAL = s_epipe_fd (&respipe);
1350	OUTPUT:	1085	OUTPUT:
1351	RETVAL	1086	RETVAL
1352		1087
1353	int	1088	int
1354	poll_cb(...)	1089	poll_cb(...)
…		…
1360		1095
1361	void	1096	void
1362	poll_wait()	1097	poll_wait()
1363	PROTOTYPE:	1098	PROTOTYPE:
1364	CODE:	1099	CODE:
1365	if (nreqs)
1366	poll_wait ();	1100	poll_wait ();
1367		1101
1368	int	1102	int
1369	nreqs()	1103	nreqs()
1370	PROTOTYPE:	1104	PROTOTYPE:
1371	CODE:	1105	CODE:
1372	RETVAL = nreqs;	1106	RETVAL = eio_nreqs ();
1373	OUTPUT:	1107	OUTPUT:
1374	RETVAL	1108	RETVAL
1375		1109
		1110	int
		1111	nready()
		1112	PROTOTYPE:
		1113	CODE:
		1114	RETVAL = eio_nready ();
		1115	OUTPUT:
		1116	RETVAL
		1117
		1118	int
		1119	npending()
		1120	PROTOTYPE:
		1121	CODE:
		1122	RETVAL = eio_npending ();
		1123	OUTPUT:
		1124	RETVAL
		1125
		1126	int
		1127	nthreads()
		1128	PROTOTYPE:
		1129	CODE:
		1130	RETVAL = eio_nthreads ();
		1131	OUTPUT:
		1132	RETVAL
		1133
		1134	int
		1135	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1136	PROTOTYPE: $$$$
		1137	CODE:
		1138	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1139	RETVAL = posix_fadvise (fh, offset, length, advice);
		1140	#else
		1141	RETVAL = errno = ENOSYS;
		1142	#endif
		1143	OUTPUT:
		1144	RETVAL
		1145
		1146	ssize_t
		1147	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1148	PROTOTYPE: $$$$
		1149	CODE:
		1150	eio_sendfile_sync (ofh, ifh, offset, count);
		1151
		1152	void _on_next_submit (SV *cb)
		1153	CODE:
		1154	SvREFCNT_dec (on_next_submit);
		1155	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1156
1376	PROTOTYPES: DISABLE	1157	PROTOTYPES: DISABLE
1377		1158
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1159	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1160
1380	void	1161	void
1381	cancel (aio_req_ornot req)	1162	cancel (aio_req_ornot req)
1382	CODE:	1163	CODE:
1383	req_cancel (req);	1164	eio_cancel (req);
1384		1165
1385	void	1166	void
1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1167	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1387	CODE:	1168	PPCODE:
		1169	{
		1170	if (GIMME_V != G_VOID)
		1171	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1172
		1173	if (items > 1)
		1174	{
		1175	SV *cb_cv =get_cb (callback);
		1176
1388	SvREFCNT_dec (req->callback);	1177	SvREFCNT_dec (req->callback);
1389	req->callback = newSVsv (callback);	1178	req->callback = SvREFCNT_inc (cb_cv);
		1179	}
		1180	}
1390		1181
1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1182	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1392		1183
1393	void	1184	void
1394	add (aio_req grp, ...)	1185	add (aio_req grp, ...)
1395	PPCODE:	1186	PPCODE:
1396	{	1187	{
1397	int i;	1188	int i;
1398	aio_req req;
1399		1189
1400	if (grp->fd == 2)	1190	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1191	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1192
1403	for (i = 1; i < items; ++i )	1193	for (i = 1; i < items; ++i )
1404	{	1194	{
		1195	aio_req req;
		1196
1405	if (GIMME_V != G_VOID)	1197	if (GIMME_V != G_VOID)
1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1198	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1407		1199
1408	req = SvAIO_REQ (ST (i));	1200	req = SvAIO_REQ (ST (i));
1409		1201
1410	if (req)	1202	if (req)
1411	{	1203	eio_grp_add (grp, req);
1412	++grp->length;
1413	req->grp = grp;
1414
1415	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;
1417
1418	if (grp->grp_first)
1419	grp->grp_first->grp_prev = req;
1420
1421	grp->grp_first = req;
1422	}	1204	}
1423	}
1424	}	1205	}
		1206
		1207	void
		1208	cancel_subs (aio_req_ornot req)
		1209	CODE:
		1210	req_cancel_subs (req);
1425		1211
1426	void	1212	void
1427	result (aio_req grp, ...)	1213	result (aio_req grp, ...)
1428	CODE:	1214	CODE:
1429	{	1215	{
1430	int i;	1216	int i;
		1217	AV *av;
		1218
		1219	grp->errorno = errno;
		1220
1431	AV *av = newAV ();	1221	av = newAV ();
		1222	av_extend (av, items - 1);
1432		1223
1433	for (i = 1; i < items; ++i )	1224	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1225	av_push (av, newSVsv (ST (i)));
1435		1226
1436	SvREFCNT_dec (grp->data);	1227	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1228	grp->sv1 = (SV *)av;
1438	}	1229	}
		1230
		1231	void
		1232	errno (aio_req grp, int errorno = errno)
		1233	CODE:
		1234	grp->errorno = errorno;
1439		1235
1440	void	1236	void
1441	limit (aio_req grp, int limit)	1237	limit (aio_req grp, int limit)
1442	CODE:	1238	CODE:
1443	grp->fd2 = limit;	1239	eio_grp_limit (grp, limit);
1444	aio_grp_feed (grp);
1445		1240
1446	void	1241	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1242	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1243	CODE:
1449	{	1244	{
1450	SvREFCNT_dec (grp->fh2);	1245	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1246	grp->sv2 = newSVsv (callback);
		1247	grp->feed = aio_grp_feed;
1452		1248
1453	if (grp->fd2 <= 0)	1249	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1250	grp->int2 = 2;
1455		1251
1456	aio_grp_feed (grp);	1252	eio_grp_limit (grp, grp->int2);
1457	}	1253	}
1458		1254

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