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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 1.202 by root, Thu Sep 29 10:01:35 2011 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
23	#include <limits.h>	16	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	17	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	18	#include <sched.h>
28		19
29	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30	# if __linux
31	# include <sys/sendfile.h>
32	# elif __freebsd
33	# include <sys/socket.h>
34	# include <sys/uio.h>	21	# include <sys/mman.h>
35	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
36	# include <sys/socket.h>	69	#include <sys/time.h>
37	# elif __solaris /* not yet */
38	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
39	# else	295	# else
40	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	297	# endif
42	#endif	298	#endif
43		299	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	301	#endif
48		302	#ifndef MAP_LOCKED
49	#if __ia64	303	# define MAP_LOCKED 0
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
56		314
57	/* buffer size for various temporary buffers */	315	#ifndef makedev
58	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
59		324
60	#define dBUF \	325	#ifndef PAGESIZE
61	char *aio_buf = malloc (AIO_BUFSIZE); \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
62	if (!aio_buf) \	327	#endif
63	return -1;
64
65	#define fBUF free (aio_buf)
66		328
67	enum {	329	enum {
68	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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	};	331	};
80		332
81	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83
84	typedef struct aio_cb
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;
89	SV *fh, *fh2;
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;
97	int type;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101
102	unsigned char flags;
103	unsigned char pri;
104
105	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;
108
109	enum {
110	FLAG_CANCELLED = 0x01,
111	};
112
113	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
115		336
116	enum {	337	static SV *on_next_submit;
117	PRI_MIN = -4,	338	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;	339	static int max_outstanding;
130	static int respipe [2];
131		340
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	static s_epipe respipe;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137		342
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	343	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);	344	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
198		359
199	/* must be called at most once */	360	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
201	{	363	{
202	if (!req->self)	364	if (!req->self)
203	{	365	{
204	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206	}	368	}
207		369
208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209	}	371	}
210		372
211	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
212	{	381	{
213	MAGIC *mg;	382	MAGIC *mg;
214		383
215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		386	&& SvSTASH (SvRV (sv)) != aio_req_stash
		387	&& !sv_derived_from (sv, "IO::AIO::REQ")))
216	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
217		389
218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219		391
220	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	393	}
222		394
		395	static aio_wd
		396	SvAIO_WD (SV *sv)
		397	{
		398	if (!SvROK (sv)
		399	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		401	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		402
		403	return (aio_wd)(long)SvIVX (SvRV (sv));
		404	}
		405
		406	static void
223	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
224	{	408	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	409	if (grp->sv2 && SvOK (grp->sv2))
226	{	410	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	411	dSP;
232		412
233	ENTER;	413	ENTER;
234	SAVETMPS;	414	SAVETMPS;
235	PUSHMARK (SP);	415	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, aio_grp_stash));
237	PUTBACK;	417	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	419	SPAGAIN;
240	FREETMPS;	420	FREETMPS;
241	LEAVE;	421	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	}	422	}
252	}	423	}
253		424
254	static void aio_grp_dec (aio_req grp)	425	static void
		426	req_submit (eio_req *req)
255	{	427	{
256	--grp->length;	428	eio_submit (req);
257		429
258	/* call feeder, if applicable */	430	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	431	{
264	req_invoke (grp);	432	dSP;
265	req_free (grp);	433	SV *cb = sv_2mortal (on_next_submit);
		434
		435	on_next_submit = 0;
		436
		437	PUSHMARK (SP);
		438	PUTBACK;
		439	call_sv (cb, G_DISCARD | G_EVAL);
266	}	440	}
267	}	441	}
268		442
269	static void poll_wait ()	443	static int
		444	req_invoke (eio_req *req)
270	{	445	{
271	fd_set rfd;	446	if (req->flags & FLAG_SV2_RO_OFF)
		447	SvREADONLY_off (req->sv2);
272		448
273	while (nreqs)	449	if (!EIO_CANCELLED (req) && req->callback)
274	{	450	{
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;	451	dSP;
297		452	static SV *sv_result_cache; /* caches the result integer SV */
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	453	SV *sv_result;
299	{
300	errno = req->errorno;
301		454
302	ENTER;	455	ENTER;
303	SAVETMPS;	456	SAVETMPS;
304	PUSHMARK (SP);	457	PUSHMARK (SP);
305	EXTEND (SP, 1);	458	EXTEND (SP, 1);
306		459
		460	/* do not recreate the result IV from scratch each time */
		461	if (expect_true (sv_result_cache))
		462	{
		463	sv_result = sv_result_cache; sv_result_cache = 0;
		464	SvIV_set (sv_result, req->result);
		465	SvIOK_only (sv_result);
		466	}
		467	else
		468	{
		469	sv_result = newSViv (req->result);
		470	SvREADONLY_on (sv_result);
		471	}
		472
307	switch (req->type)	473	switch (req->type)
308	{	474	{
		475	case EIO_WD_OPEN:
		476	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		477	break;
		478
309	case REQ_READDIR:	479	case EIO_READDIR:
310	{	480	{
311	SV *rv = &PL_sv_undef;	481	SV *rv = &PL_sv_undef;
312		482
313	if (req->result >= 0)	483	if (req->result >= 0)
314	{	484	{
		485	int i;
315	char *buf = req->data2ptr;	486	char *names = (char *)req->ptr2;
		487	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	488	AV *av = newAV ();
317		489
318	while (req->result)	490	av_extend (av, req->result - 1);
		491
		492	for (i = 0; i < req->result; ++i)
319	{	493	{
		494	if (req->int1 & EIO_READDIR_DENTS)
		495	{
		496	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		497
		498	if (req->int1 & EIO_READDIR_CUSTOM2)
		499	{
		500	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		501	AV *avent = newAV ();
		502
		503	av_extend (avent, 2);
		504
		505	if (!sv_type [ent->type])
		506	{
		507	sv_type [ent->type] = newSViv (ent->type);
		508	SvREADONLY_on (sv_type [ent->type]);
		509	}
		510
		511	av_store (avent, 0, namesv);
		512	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		513	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		514
		515	av_store (av, i, newRV_noinc ((SV *)avent));
		516	}
		517	else
		518	av_store (av, i, namesv);
		519
		520	++ent;
		521	}
		522	else
		523	{
320	SV *sv = newSVpv (buf, 0);	524	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	525	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	526	names += SvCUR (name) + 1;
324	req->result--;	527	}
325	}	528	}
326		529
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	530	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	531	}
329		532
330	PUSHs (rv);	533	PUSHs (rv);
		534
		535	if (req->int1 & EIO_READDIR_CUSTOM1)
		536	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	537	}
332	break;	538	break;
333		539
334	case REQ_OPEN:	540	case EIO_OPEN:
335	{	541	{
336	/* convert fd to fh */	542	/* convert fd to fh */
337	SV *fh;	543	SV *fh = &PL_sv_undef;
338		544
339	PUSHs (sv_2mortal (newSViv (req->result)));	545	if (req->result >= 0)
340	PUTBACK;	546	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	547	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	548	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		549	char sym [64];
		550	int symlen;
		551
		552	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		553	gv_init (gv, aio_stash, sym, symlen, 0);
343		554
344	fh = SvREFCNT_inc (POPs);	555	symlen = snprintf (
		556	sym,
		557	sizeof (sym),
		558	"%s&=%d",
		559	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		560	(int)req->result
		561	);
345		562
		563	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		564	fh = (SV *)gv;
		565	}
		566
346	PUSHMARK (SP);	567	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	568	}
349	break;	569	break;
350		570
		571	case EIO_STATVFS:
		572	case EIO_FSTATVFS:
		573	{
		574	SV *rv = &PL_sv_undef;
		575
		576	#ifndef _WIN32
		577	if (req->result >= 0)
		578	{
		579	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		580	HV *hv = newHV ();
		581
		582	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		583
		584	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		585	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		586	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		587	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		588	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		589	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		590	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		591	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		592	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		593	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		594	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		595	}
		596	#endif
		597
		598	PUSHs (rv);
		599	}
		600
		601	break;
		602
351	case REQ_GROUP:	603	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	604	req->int1 = 2; /* mark group as finished */
353		605
354	if (req->data)	606	if (req->sv1)
355	{	607	{
356	int i;	608	int i;
357	AV *av = (AV *)req->data;	609	AV *av = (AV *)req->sv1;
358		610
359	EXTEND (SP, AvFILL (av) + 1);	611	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	612	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	613	PUSHs (*av_fetch (av, i, 0));
362	}	614	}
363	break;	615	break;
364		616
365	case REQ_NOP:	617	case EIO_NOP:
366	case REQ_SLEEP:	618	case EIO_BUSY:
367	break;	619	break;
368		620
		621	case EIO_READLINK:
		622	case EIO_REALPATH:
		623	if (req->result > 0)
		624	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		625	break;
		626
		627	case EIO_STAT:
		628	case EIO_LSTAT:
		629	case EIO_FSTAT:
		630	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		631
		632	if (!(PL_laststatval = req->result))
		633	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		634	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		635
		636	PUSHs (sv_result);
		637	break;
		638
		639	case EIO_READ:
		640	{
		641	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		642	*SvEND (req->sv2) = 0;
		643	SvPOK_only (req->sv2);
		644	SvSETMAGIC (req->sv2);
		645	PUSHs (sv_result);
		646	}
		647	break;
		648
		649	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		650	if (req->result > 0)
		651	SvIV_set (sv_result, 0);
		652	/* FALLTHROUGH */
		653
369	default:	654	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	655	PUSHs (sv_result);
371	break;	656	break;
372	}	657	}
373		658
		659	errno = req->errorno;
374		660
375	PUTBACK;	661	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	662	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	663	SPAGAIN;
		664
		665	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		666	SvREFCNT_dec (sv_result);
		667	else
		668	sv_result_cache = sv_result;
378		669
379	FREETMPS;	670	FREETMPS;
380	LEAVE;	671	LEAVE;
		672
		673	PUTBACK;
381	}	674	}
382		675
383	if (req->grp)	676	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	}	677	}
403		678
404	static void req_free (aio_req req)	679	static void
		680	req_destroy (aio_req req)
405	{	681	{
406	if (req->self)	682	if (req->self)
407	{	683	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
410	}	686	}
411		687
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	688	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
415	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		693
421	Safefree (req);	694	Safefree (req);
422	}	695	}
423		696
424	static void req_cancel (aio_req req)	697	static void
		698	req_cancel_subs (aio_req grp)
425	{	699	{
426	req->flags |= FLAG_CANCELLED;
427
428	if (req->type == REQ_GROUP)	700	if (grp->type != EIO_GROUP)
		701	return;
		702
		703	SvREFCNT_dec (grp->sv2);
		704	grp->sv2 = 0;
		705
		706	eio_grp_cancel (grp);
		707	}
		708
		709	static void ecb_cold
		710	create_respipe (void)
		711	{
		712	if (s_epipe_renew (&respipe))
		713	croak ("IO::AIO: unable to initialize result pipe");
		714	}
		715
		716	static void
		717	poll_wait (void)
		718	{
		719	while (eio_nreqs ())
429	{	720	{
430	aio_req sub;	721	int size;
431		722
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	723	X_LOCK (reslock);
433	req_cancel (sub);	724	size = res_queue.size;
		725	X_UNLOCK (reslock);
		726
		727	if (size)
		728	return;
		729
		730	etp_maybe_start_thread ();
		731
		732	s_epipe_wait (&respipe);
434	}	733	}
435	}	734	}
436		735
437	static int poll_cb ()	736	static int
		737	poll_cb (void)
438	{	738	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	739	for (;;)
445	{	740	{
446	pthread_mutex_lock (&reslock);	741	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		742
449	if (req)	743	if (res > 0)
		744	croak (0);
		745
		746	if (!max_outstanding || max_outstanding > eio_nreqs ())
		747	return res;
		748
		749	poll_wait ();
		750	}
		751	}
		752
		753	static void ecb_cold
		754	reinit (void)
		755	{
		756	create_respipe ();
		757
		758	if (eio_init (want_poll, done_poll) < 0)
		759	croak ("IO::AIO: unable to initialise eio library");
		760	}
		761
		762	/*****************************************************************************/
		763
		764	#if !_POSIX_MAPPED_FILES
		765	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		766	# define munmap(addr,length) (errno = ENOSYS, -1)
		767	#endif
		768
		769	#if !_POSIX_MEMORY_PROTECTION
		770	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		771	# define PROT_NONE 0
		772	# define PROT_WRITE 0
		773	# define MAP_PRIVATE 0
		774	# define MAP_SHARED 0
		775	# define MAP_FIXED 0
		776	#endif
		777
		778	#define MMAP_MAGIC PERL_MAGIC_ext
		779
		780	static int ecb_cold
		781	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		782	{
		783	int old_errno = errno;
		784	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		785	errno = old_errno;
		786
		787	mg->mg_obj = 0; /* just in case */
		788
		789	SvREADONLY_off (sv);
		790
		791	if (SvPVX (sv) != mg->mg_ptr)
		792	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		793
		794	SvCUR_set (sv, 0);
		795	SvPVX (sv) = 0;
		796	SvOK_off (sv);
		797
		798	return 0;
		799	}
		800
		801	static MGVTBL mmap_vtbl = {
		802	0, 0, 0, 0, mmap_free
		803	};
		804
		805	/*****************************************************************************/
		806
		807	static SV *
		808	get_cb (SV *cb_sv)
		809	{
		810	SvGETMAGIC (cb_sv);
		811	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		812	}
		813
		814	#define dREQ \
		815	SV *cb_cv; \
		816	aio_req req; \
		817	int req_pri = next_pri; \
		818	next_pri = EIO_PRI_DEFAULT; \
		819	\
		820	cb_cv = get_cb (callback); \
		821	\
		822	Newz (0, req, 1, eio_req); \
		823	if (!req) \
		824	croak ("out of memory during eio_req allocation"); \
		825	\
		826	req->callback = SvREFCNT_inc (cb_cv); \
		827	req->pri = req_pri
		828
		829	#define REQ_SEND \
		830	PUTBACK; \
		831	req_submit (req); \
		832	SPAGAIN; \
		833	\
		834	if (GIMME_V != G_VOID) \
		835	XPUSHs (req_sv (req, aio_req_stash));
		836
		837	ecb_inline void
		838	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		839	{
		840	if (expect_false (SvROK (path)))
		841	{
		842	AV *av = (AV *)SvRV (path);
		843	SV *wdob;
		844
		845	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		846	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		847
		848	path = AvARRAY (av)[1];
		849	wdob = AvARRAY (av)[0];
		850
		851	if (SvOK (wdob))
450	{	852	{
451	if (!res_queue.size)	853	*wd = SvAIO_WD (wdob);
452	{	854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
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;
464
465	--nreqs;
466
467	if (req->type == REQ_QUIT)
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}	855	}
474	else	856	else
475	{	857	*wd = EIO_INVALID_WD;
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	}	858	}
496		859
497	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
498	}	862	}
499		863
500	static void *aio_proc(void *arg);	864	static void ecb_noinline
501		865	req_set_path1 (aio_req req, SV *path)
502	static void start_thread (void)
503	{	866	{
504	sigset_t fullsigset, oldsigset;	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
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	}	868	}
520		869
521	static void req_send (aio_req req)	870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
522	{	872	{
523	while (started < wanted && nreqs >= started)	873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
524	start_thread ();
525		874
526	++nreqs;	875	switch (SvTYPE (rv))
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	{	876	{
572	end_thread ();	877	case SVt_PVIO:
573	cur--;	878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
574	}	889	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}	890	}
582		891
583	static void create_pipe ()	892	XS(boot_IO__AIO) ecb_cold;
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587		893
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	894	MODULE = IO::AIO PACKAGE = IO::AIO
589	croak ("cannot set result pipe to nonblocking mode");
590		895
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	896	PROTOTYPES: ENABLE
592	croak ("cannot set result pipe to nonblocking mode");
593	}
594		897
595	/*****************************************************************************/	898	BOOT:
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	{	899	{
611	ssize_t res;	900	static const struct {
612	off_t ooffset;	901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907	const_iv (EXDEV)
		908	const_iv (ENOSYS)
		909	const_iv (O_RDONLY)
		910	const_iv (O_WRONLY)
		911	const_iv (O_RDWR)
		912	const_iv (O_CREAT)
		913	const_iv (O_TRUNC)
		914	const_iv (O_EXCL)
		915	const_iv (O_APPEND)
613		916
614	pthread_mutex_lock (&preadwritelock);	917	const_iv (O_ASYNC)
615	ooffset = lseek (fd, 0, SEEK_CUR);	918	const_iv (O_DIRECT)
616	lseek (fd, offset, SEEK_SET);	919	const_iv (O_NOATIME)
617	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);
620		920
621	return res;	921	const_iv (O_CLOEXEC)
622	}	922	const_iv (O_NOCTTY)
		923	const_iv (O_NOFOLLOW)
		924	const_iv (O_NONBLOCK)
		925	const_iv (O_EXEC)
		926	const_iv (O_SEARCH)
		927	const_iv (O_DIRECTORY)
		928	const_iv (O_DSYNC)
		929	const_iv (O_RSYNC)
		930	const_iv (O_SYNC)
		931	const_iv (O_TTY_INIT)
623		932
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	933	const_iv (S_IFIFO)
625	{	934	const_iv (S_IFCHR)
626	ssize_t res;	935	const_iv (S_IFBLK)
627	off_t ooffset;	936	const_iv (S_IFLNK)
		937	const_iv (S_IFREG)
		938	const_iv (S_IFDIR)
		939	const_iv (S_IFWHT)
		940	const_iv (S_IFSOCK)
		941	const_iv (S_IFMT)
628		942
629	pthread_mutex_lock (&preadwritelock);	943	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
630	ooffset = lseek (fd, 0, SEEK_CUR);	944	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
631	lseek (fd, offset, SEEK_SET);	945	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
632	res = write (fd, buf, count);	946	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
633	lseek (fd, offset, SEEK_SET);	947	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
634	pthread_mutex_unlock (&preadwritelock);	948	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
635		949
636	return res;	950	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
637	}	951	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
638	#endif	952	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		953	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		954	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
639		955
640	#if !HAVE_FDATASYNC	956	const_iv (ST_RDONLY)
641	# define fdatasync fsync	957	const_iv (ST_NOSUID)
642	#endif	958	const_iv (ST_NODEV)
		959	const_iv (ST_NOEXEC)
		960	const_iv (ST_SYNCHRONOUS)
		961	const_iv (ST_MANDLOCK)
		962	const_iv (ST_WRITE)
		963	const_iv (ST_APPEND)
		964	const_iv (ST_IMMUTABLE)
		965	const_iv (ST_NOATIME)
		966	const_iv (ST_NODIRATIME)
		967	const_iv (ST_RELATIME)
643		968
644	#if !HAVE_READAHEAD	969	const_iv (PROT_NONE)
645	# define readahead aio_readahead	970	const_iv (PROT_EXEC)
		971	const_iv (PROT_READ)
		972	const_iv (PROT_WRITE)
646		973
647	static ssize_t readahead (int fd, off_t offset, size_t count)	974	/*const_iv (MAP_FIXED)*/
648	{	975	const_iv (MAP_PRIVATE)
649	dBUF;	976	const_iv (MAP_SHARED)
		977	const_iv (MAP_ANONYMOUS)
650		978
651	while (count > 0)	979	/* linuxish */
652	{	980	const_iv (MAP_HUGETLB)
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	981	const_iv (MAP_LOCKED)
		982	const_iv (MAP_NORESERVE)
		983	const_iv (MAP_POPULATE)
		984	const_iv (MAP_NONBLOCK)
654		985
655	pread (fd, aio_buf, len, offset);	986	const_eio (MCL_FUTURE)
656	offset += len;	987	const_eio (MCL_CURRENT)
657	count -= len;
658	}
659		988
660	fBUF;	989	const_eio (MS_ASYNC)
		990	const_eio (MS_INVALIDATE)
		991	const_eio (MS_SYNC)
661		992
662	errno = 0;	993	const_eio (MT_MODIFY)
663	}
664	#endif
665		994
666	#if !HAVE_READDIR_R	995	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
667	# define readdir_r aio_readdir_r	996	const_eio (SYNC_FILE_RANGE_WRITE)
		997	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
668		998
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	999	const_eio (FALLOC_FL_KEEP_SIZE)
670
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{
673	struct dirent *e;
674	int errorno;
675		1000
676	pthread_mutex_lock (&readdirlock);	1001	const_eio (READDIR_DENTS)
		1002	const_eio (READDIR_DIRS_FIRST)
		1003	const_eio (READDIR_STAT_ORDER)
		1004	const_eio (READDIR_FOUND_UNKNOWN)
677		1005
678	e = readdir (dirp);	1006	const_eio (DT_UNKNOWN)
679	errorno = errno;	1007	const_eio (DT_FIFO)
680		1008	const_eio (DT_CHR)
681	if (e)	1009	const_eio (DT_DIR)
682	{	1010	const_eio (DT_BLK)
683	*res = ent;	1011	const_eio (DT_REG)
684	strcpy (ent->d_name, e->d_name);	1012	const_eio (DT_LNK)
685	}	1013	const_eio (DT_SOCK)
686	else	1014	const_eio (DT_WHT)
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;
703
704	#if HAVE_SENDFILE
705	# if __linux
706	res = sendfile (ofd, ifd, &offset, count);
707
708	# elif __freebsd
709	/*
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
717	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
719	res = sbytes;
720	}	1015	};
721		1016
722	# elif __hpux	1017	aio_stash = gv_stashpv ("IO::AIO" , 1);
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1019	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1020	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
724		1021
725	# elif __solaris	1022	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
726	{	1023	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
727	struct sendfilevec vec;
728	size_t sbytes;
729		1024
730	vec.sfv_fd = ifd;	1025	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734		1026
735	res = sendfilev (ofd, &vec, 1, &sbytes);	1027	reinit ();
		1028	}
736		1029
737	if (res < 0 && sbytes)	1030	void
		1031	reinit ()
		1032	PROTOTYPE:
		1033
		1034	void
		1035	max_poll_reqs (unsigned int nreqs)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_max_poll_reqs (nreqs);
		1039
		1040	void
		1041	max_poll_time (double nseconds)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_poll_time (nseconds);
		1045
		1046	void
		1047	min_parallel (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_min_parallel (nthreads);
		1051
		1052	void
		1053	max_parallel (unsigned int nthreads)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_max_parallel (nthreads);
		1057
		1058	void
		1059	max_idle (unsigned int nthreads)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_idle (nthreads);
		1063
		1064	void
		1065	idle_timeout (unsigned int seconds)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_idle_timeout (seconds);
		1069
		1070	void
		1071	max_outstanding (unsigned int maxreqs)
		1072	PROTOTYPE: $
		1073	CODE:
		1074	max_outstanding = maxreqs;
		1075
		1076	void
		1077	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_WD_OPEN;
		1083	req_set_path1 (req, pathname);
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->type = EIO_OPEN;
		1095	req_set_path1 (req, pathname);
		1096	req->int1 = flags;
		1097	req->int2 = mode;
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1104	ALIAS:
		1105	aio_fsync = EIO_FSYNC
		1106	aio_fdatasync = EIO_FDATASYNC
		1107	aio_syncfs = EIO_SYNCFS
		1108	PPCODE:
		1109	{
		1110	int fd = s_fileno_croak (fh, 0);
		1111	dREQ;
		1112
		1113	req->type = ix;
		1114	req->sv1 = newSVsv (fh);
		1115	req->int1 = fd;
		1116
		1117	REQ_SEND (req);
		1118	}
		1119
		1120	void
		1121	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1122	PPCODE:
		1123	{
		1124	int fd = s_fileno_croak (fh, 0);
		1125	dREQ;
		1126
		1127	req->type = EIO_SYNC_FILE_RANGE;
		1128	req->sv1 = newSVsv (fh);
		1129	req->int1 = fd;
		1130	req->offs = offset;
738	res = sbytes;	1131	req->size = nbytes;
739	}	1132	req->int2 = flags;
740		1133
741	# endif	1134	REQ_SEND (req);
		1135	}
		1136
		1137	void
		1138	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	req->type = EIO_FALLOCATE;
		1145	req->sv1 = newSVsv (fh);
		1146	req->int1 = fd;
		1147	req->int2 = mode;
		1148	req->offs = offset;
		1149	req->size = len;
		1150
		1151	REQ_SEND (req);
		1152	}
		1153
		1154	void
		1155	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	if (expect_false (close_fd < 0))
		1163	{
		1164	int pipefd [2];
		1165
		1166	if (
		1167	#ifdef _WIN32
		1168	_pipe (pipefd, 1, _O_BINARY) < 0
742	#else	1169	#else
743	res = -1;	1170	pipe (pipefd) < 0
744	errno = ENOSYS;	1171	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
745	#endif	1172	#endif
746		1173	|| close (pipefd [1]) < 0
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	{	1174	)
768	if (cnt && !res) res = -1;	1175	abort (); /*D*/
769	break;
770	}
771		1176
772	cnt = write (ofd, aio_buf, cnt);	1177	close_fd = pipefd [0];
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	}	1178	}
842	}
843		1179
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	}
989
990	#define dREQ \
991	aio_req req; \
992	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \
994	\
995	if (SvOK (callback) && !SvROK (callback)) \
996	croak ("callback must be undef or of reference type"); \
997	\
998	Newz (0, req, 1, aio_cb); \
999	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \
1001	\
1002	req->callback = newSVsv (callback); \
1003	req->pri = req_pri
1004
1005	#define REQ_SEND \
1006	req_send (req); \
1007	\
1008	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010
1011	MODULE = IO::AIO PACKAGE = IO::AIO
1012
1013	PROTOTYPES: ENABLE
1014
1015	BOOT:
1016	{
1017	HV *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
1022	create_pipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}
1025
1026	void
1027	min_parallel (nthreads)
1028	int nthreads
1029	PROTOTYPE: $
1030
1031	void
1032	max_parallel (nthreads)
1033	int nthreads
1034	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:
1041	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;
1043
1044	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$
1051	PPCODE:
1052	{
1053	dREQ;
1054
1055	req->type = REQ_OPEN;	1180	req->type = EIO_DUP2;
		1181	req->int1 = close_fd;
1056	req->data = newSVsv (pathname);	1182	req->sv2 = newSVsv (fh);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1183	req->int2 = fd;
1058	req->fd = flags;
1059	req->mode = mode;
1060		1184
1061	REQ_SEND;	1185	REQ_SEND (req);
1062	}	1186	}
1063		1187
1064	void	1188	void
1065	aio_close (fh,callback=&PL_sv_undef)	1189	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$
1069	ALIAS:	1190	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:
1074	{
1075	dREQ;
1076
1077	req->type = ix;
1078	req->fh = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080
1081	REQ_SEND (req);
1082	}
1083
1084	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:
1093	aio_read = REQ_READ	1191	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	1192	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$
1096	PPCODE:	1193	PPCODE:
1097	{	1194	{
1098	aio_req req;
1099	STRLEN svlen;	1195	STRLEN svlen;
		1196	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	1197	char *svptr = SvPVbyte (data, svlen);
1101		1198	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		1199
1105	if (dataoffset < 0)	1200	if (dataoffset < 0)
1106	dataoffset += svlen;	1201	dataoffset += svlen;
1107		1202
1108	if (dataoffset < 0 || dataoffset > svlen)	1203	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	1204	croak ("dataoffset outside of data scalar");
1110		1205
1111	if (ix == REQ_WRITE)	1206	if (ix == EIO_WRITE)
1112	{	1207	{
1113	/* write: check length and adjust. */	1208	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1209	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1210	len = svlen - dataoffset;
1116	}	1211	}
1117	else	1212	else
1118	{	1213	{
1119	/* read: grow scalar as necessary */	1214	/* read: check type and grow scalar as necessary */
		1215	SvUPGRADE (data, SVt_PV);
1120	svptr = SvGROW (data, length + dataoffset);	1216	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	1217	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		1218
1126	{	1219	{
1127	dREQ;	1220	dREQ;
1128		1221
1129	req->type = ix;	1222	req->type = ix;
1130	req->fh = newSVsv (fh);	1223	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1224	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	1225	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1226	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1227	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1228	req->ptr2 = (char *)svptr + dataoffset;
		1229	req->stroffset = dataoffset;
1137		1230
1138	if (!SvREADONLY (data))	1231	if (!SvREADONLY (data))
1139	{	1232	{
1140	SvREADONLY_on (data);	1233	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1234	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1235	}
1143		1236
1144	REQ_SEND;	1237	REQ_SEND;
1145	}	1238	}
1146	}	1239	}
1147		1240
1148	void	1241	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1242	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * out_fh	1243	ALIAS:
1151	SV * in_fh	1244	aio_readlink = EIO_READLINK
1152	UV in_offset	1245	aio_realpath = EIO_REALPATH
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$
1156	PPCODE:	1246	PPCODE:
1157	{	1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req_set_path1 (req, pathname);
		1252
		1253	REQ_SEND;
		1254	}
		1255
		1256	void
		1257	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1258	PPCODE:
		1259	{
		1260	int ifd = s_fileno_croak (in_fh , 0);
		1261	int ofd = s_fileno_croak (out_fh, 1);
1158	dREQ;	1262	dREQ;
1159		1263
1160	req->type = REQ_SENDFILE;	1264	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1265	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1266	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	1267	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1268	req->int2 = ifd;
1165	req->offset = in_offset;	1269	req->offs = in_offset;
1166	req->length = length;	1270	req->size = length;
1167		1271
1168	REQ_SEND;	1272	REQ_SEND;
1169	}	1273	}
1170		1274
1171	void	1275	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1276	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$
1178	PPCODE:	1277	PPCODE:
1179	{	1278	{
		1279	int fd = s_fileno_croak (fh, 0);
1180	dREQ;	1280	dREQ;
1181		1281
1182	req->type = REQ_READAHEAD;	1282	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1284	req->int1 = fd;
1185	req->offset = offset;	1285	req->offs = offset;
1186	req->length = length;	1286	req->size = length;
1187		1287
1188	REQ_SEND;	1288	REQ_SEND;
1189	}	1289	}
1190		1290
1191	void	1291	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1292	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1293	ALIAS:
1196	aio_stat = REQ_STAT	1294	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	1295	aio_lstat = EIO_LSTAT
		1296	aio_statvfs = EIO_STATVFS
1198	PPCODE:	1297	PPCODE:
1199	{	1298	{
1200	dREQ;	1299	dREQ;
1201		1300
1202	New (0, req->statdata, 1, Stat_t);
1203	if (!req->statdata)
1204	{
1205	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");
1207	}
1208
1209	if (SvPOK (fh_or_path))
1210	{
1211	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);
1214	}
1215	else
1216	{
1217	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);	1301	req->sv1 = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1302	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1220	}
1221
1222	REQ_SEND;	1303	REQ_SEND;
1223	}	1304	}
1224		1305
		1306	UV
		1307	major (UV dev)
		1308	ALIAS:
		1309	minor = 1
		1310	CODE:
		1311	RETVAL = ix ? major (dev) : minor (dev);
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	UV
		1316	makedev (UV maj, UV min)
		1317	CODE:
		1318	RETVAL = makedev (maj, min);
		1319	OUTPUT:
		1320	RETVAL
		1321
1225	void	1322	void
		1323	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1329	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1330	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1331
		1332	REQ_SEND;
		1333	}
		1334
		1335	void
		1336	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1337	PPCODE:
		1338	{
		1339	dREQ;
		1340
		1341	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1342	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1349	PPCODE:
		1350	{
		1351	dREQ;
		1352
		1353	req->int2 = mode;
		1354	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1366	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1367	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
		1373	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = EIO_READDIR;
		1379	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1380
		1381	if (flags & EIO_READDIR_DENTS)
		1382	req->int1 |= EIO_READDIR_CUSTOM2;
		1383
		1384	req_set_path1 (req, pathname);
		1385
		1386	REQ_SEND;
		1387	}
		1388
		1389	void
		1390	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1391	PPCODE:
		1392	{
		1393	dREQ;
		1394
		1395	req->type = EIO_MKDIR;
		1396	req->int2 = mode;
		1397	req_set_path1 (req, pathname);
		1398
		1399	REQ_SEND;
		1400	}
		1401
		1402	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1403	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1404	ALIAS:
1230	aio_unlink = REQ_UNLINK	1405	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1406	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1407	aio_readdir = EIO_READDIR
1233	PPCODE:	1408	PPCODE:
1234	{	1409	{
1235	dREQ;	1410	dREQ;
1236		1411
1237	req->type = ix;	1412	req->type = ix;
1238	req->data = newSVsv (pathname);	1413	req_set_path1 (req, pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1420	ALIAS:
		1421	aio_link = EIO_LINK
		1422	aio_symlink = EIO_SYMLINK
		1423	aio_rename = EIO_RENAME
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427	eio_wd wd2 = 0;
		1428
		1429	req->type = ix;
		1430	req_set_path1 (req, oldpath);
		1431	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1432	req->int3 = (long)wd2;
1240		1433
1241	REQ_SEND;	1434	REQ_SEND;
1242	}	1435	}
1243		1436
1244	void	1437	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1438	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:
1250	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME
1253	PPCODE:	1439	PPCODE:
1254	{	1440	{
1255	dREQ;	1441	dREQ;
1256		1442
1257	req->type = ix;	1443	req->type = EIO_MKNOD;
1258	req->fh = newSVsv (oldpath);	1444	req->int2 = (mode_t)mode;
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1445	req->offs = dev;
1260	req->data = newSVsv (newpath);	1446	req_set_path1 (req, pathname);
1261	req->dataptr = SvPVbyte_nolen (req->data);
1262		1447
1263	REQ_SEND;	1448	REQ_SEND;
1264	}	1449	}
1265		1450
1266	void	1451	void
		1452	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1453	ALIAS:
		1454	aio_mtouch = EIO_MTOUCH
		1455	aio_msync = EIO_MSYNC
		1456	PPCODE:
		1457	{
		1458	STRLEN svlen;
		1459	char *svptr = SvPVbyte (data, svlen);
		1460	UV len = SvUV (length);
		1461
		1462	if (offset < 0)
		1463	offset += svlen;
		1464
		1465	if (offset < 0 || offset > svlen)
		1466	croak ("offset outside of scalar");
		1467
		1468	if (!SvOK (length) || len + offset > svlen)
		1469	len = svlen - offset;
		1470
		1471	{
		1472	dREQ;
		1473
		1474	req->type = ix;
		1475	req->sv2 = SvREFCNT_inc (data);
		1476	req->ptr2 = (char *)svptr + offset;
		1477	req->size = len;
		1478	req->int1 = flags;
		1479
		1480	REQ_SEND;
		1481	}
		1482	}
		1483
		1484	void
		1485	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1486	PPCODE:
		1487	{
		1488	STRLEN svlen;
		1489	char *svptr = SvPVbyte (data, svlen);
		1490	UV len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_MLOCK;
		1505	req->sv2 = SvREFCNT_inc (data);
		1506	req->ptr2 = (char *)svptr + offset;
		1507	req->size = len;
		1508
		1509	REQ_SEND;
		1510	}
		1511	}
		1512
		1513	void
		1514	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1515	PPCODE:
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCKALL;
		1520	req->int1 = flags;
		1521
		1522	REQ_SEND;
		1523	}
		1524
		1525	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1526	aio_busy (double delay, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1527	PPCODE:
1271	{	1528	{
1272	dREQ;	1529	dREQ;
1273		1530
1274	req->type = REQ_SLEEP;	1531	req->type = EIO_BUSY;
1275	req->fd = delay < 0. ? 0 : delay;	1532	req->nv1 = delay < 0. ? 0. : delay;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1277		1533
1278	REQ_SEND;	1534	REQ_SEND;
1279	}	1535	}
1280		1536
1281	void	1537	void
1282	aio_group (callback=&PL_sv_undef)	1538	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$
1285	PPCODE:	1539	PPCODE:
1286	{	1540	{
1287	dREQ;	1541	dREQ;
1288		1542
1289	req->type = REQ_GROUP;	1543	req->type = EIO_GROUP;
		1544
1290	req_send (req);	1545	req_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1546	XPUSHs (req_sv (req, aio_grp_stash));
1293	}	1547	}
1294		1548
1295	void	1549	void
1296	aio_nop (callback=&PL_sv_undef)	1550	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	1551	ALIAS:
		1552	aio_nop = EIO_NOP
		1553	aio_sync = EIO_SYNC
1298	PPCODE:	1554	PPCODE:
1299	{	1555	{
1300	dREQ;	1556	dREQ;
1301		1557
1302	req->type = REQ_NOP;	1558	req->type = ix;
1303		1559
1304	REQ_SEND;	1560	REQ_SEND;
1305	}	1561	}
1306		1562
1307	void	1563	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1564	aioreq_pri (int pri = 0)
1309	CODE:	1565	CODE:
		1566	RETVAL = next_pri;
		1567	if (items > 0)
		1568	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1569	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1570	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1571	next_pri = pri;
		1572	}
		1573	OUTPUT:
		1574	RETVAL
		1575
		1576	void
		1577	aioreq_nice (int nice = 0)
		1578	CODE:
		1579	nice = next_pri - nice;
		1580	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1581	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1582	next_pri = nice;
1313		1583
1314	void	1584	void
1315	flush ()	1585	flush ()
1316	PROTOTYPE:
1317	CODE:	1586	CODE:
1318	while (nreqs)	1587	while (eio_nreqs ())
1319	{	1588	{
1320	poll_wait ();	1589	poll_wait ();
1321	poll_cb ();	1590	poll_cb ();
1322	}	1591	}
1323		1592
1324	void
1325	poll()
1326	PROTOTYPE:
1327	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();
1331	poll_cb ();
1332	}
1333
1334	int	1593	int
1335	poll_fileno()	1594	poll ()
1336	PROTOTYPE:
1337	CODE:	1595	CODE:
1338	RETVAL = respipe [0];	1596	poll_wait ();
1339	OUTPUT:
1340	RETVAL
1341
1342	int
1343	poll_cb(...)
1344	PROTOTYPE:
1345	CODE:
1346	RETVAL = poll_cb ();	1597	RETVAL = poll_cb ();
1347	OUTPUT:	1598	OUTPUT:
1348	RETVAL	1599	RETVAL
1349		1600
1350	void
1351	poll_wait()
1352	PROTOTYPE:
1353	CODE:
1354	if (nreqs)
1355	poll_wait ();
1356
1357	int	1601	int
1358	nreqs()	1602	poll_fileno ()
1359	PROTOTYPE:
1360	CODE:	1603	CODE:
1361	RETVAL = nreqs;	1604	RETVAL = s_epipe_fd (&respipe);
1362	OUTPUT:	1605	OUTPUT:
1363	RETVAL	1606	RETVAL
1364		1607
		1608	int
		1609	poll_cb (...)
		1610	PROTOTYPE:
		1611	CODE:
		1612	RETVAL = poll_cb ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	void
		1617	poll_wait ()
		1618	CODE:
		1619	poll_wait ();
		1620
		1621	int
		1622	nreqs ()
		1623	CODE:
		1624	RETVAL = eio_nreqs ();
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	nready ()
		1630	CODE:
		1631	RETVAL = eio_nready ();
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	int
		1636	npending ()
		1637	CODE:
		1638	RETVAL = eio_npending ();
		1639	OUTPUT:
		1640	RETVAL
		1641
		1642	int
		1643	nthreads ()
		1644	CODE:
		1645	RETVAL = eio_nthreads ();
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1651	CODE:
		1652	RETVAL = posix_fadvise (fh, offset, length, advice);
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	IV
		1657	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1658	CODE:
		1659	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	void
		1664	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1665	PPCODE:
		1666	sv_unmagic (scalar, MMAP_MAGIC);
		1667	{
		1668	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1669	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1670	if (addr == (void *)-1)
		1671	XSRETURN_NO;
		1672
		1673	sv_force_normal (scalar);
		1674
		1675	/* we store the length in mg_obj, as namlen is I32 :/ */
		1676	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1677	->mg_obj = (SV *)length;
		1678
		1679	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1680
		1681	if (!(prot & PROT_WRITE))
		1682	SvREADONLY_on (scalar);
		1683
		1684	if (SvLEN (scalar))
		1685	Safefree (SvPVX (scalar));
		1686
		1687	SvPVX (scalar) = (char *)addr;
		1688	SvCUR_set (scalar, length);
		1689	SvLEN_set (scalar, 0);
		1690	SvPOK_only (scalar);
		1691
		1692	XSRETURN_YES;
		1693	}
		1694
		1695	void
		1696	munmap (SV *scalar)
		1697	CODE:
		1698	sv_unmagic (scalar, MMAP_MAGIC);
		1699
		1700	int
		1701	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1702	ALIAS:
		1703	mprotect = 1
		1704	CODE:
		1705	{
		1706	STRLEN svlen;
		1707	void *addr = SvPVbyte (scalar, svlen);
		1708	size_t len = SvUV (length);
		1709
		1710	if (offset < 0)
		1711	offset += svlen;
		1712
		1713	if (offset < 0 || offset > svlen)
		1714	croak ("offset outside of scalar");
		1715
		1716	if (!SvOK (length) || len + offset > svlen)
		1717	len = svlen - offset;
		1718
		1719	addr = (void *)(((intptr_t)addr) + offset);
		1720	eio_page_align (&addr, &len);
		1721
		1722	switch (ix)
		1723	{
		1724	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1725	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1726	}
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1733	CODE:
		1734	{
		1735	STRLEN svlen;
		1736	void *addr = SvPVbyte (scalar, svlen);
		1737	size_t len = SvUV (length);
		1738
		1739	if (offset < 0)
		1740	offset += svlen;
		1741
		1742	if (offset < 0 || offset > svlen)
		1743	croak ("offset outside of scalar");
		1744
		1745	if (!SvOK (length) || len + offset > svlen)
		1746	len = svlen - offset;
		1747
		1748	addr = (void *)(((intptr_t)addr) + offset);
		1749	eio_page_align (&addr, &len);
		1750	#if _POSIX_MEMLOCK_RANGE
		1751	RETVAL = munlock (addr, len);
		1752	#else
		1753	RETVAL = ((errno = ENOSYS), -1);
		1754	#endif
		1755	}
		1756	OUTPUT:
		1757	RETVAL
		1758
		1759	int
		1760	munlockall ()
		1761	CODE:
		1762	#if _POSIX_MEMLOCK
		1763	munlockall ();
		1764	#else
		1765	RETVAL = -1;
		1766	errno = ENOSYS;
		1767	#endif
		1768	OUTPUT:
		1769	RETVAL
		1770
		1771	void _on_next_submit (SV *cb)
		1772	CODE:
		1773	SvREFCNT_dec (on_next_submit);
		1774	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1775
1365	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1366		1777
		1778	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1779
		1780	BOOT:
		1781	{
		1782	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1783	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1784	}
		1785
		1786	void
		1787	DESTROY (SV *self)
		1788	CODE:
		1789	{
		1790	aio_wd wd = SvAIO_WD (self);
		1791	#if HAVE_AT
		1792	SV *callback = &PL_sv_undef;
		1793	dREQ; /* clobbers next_pri :/ */
		1794	req->type = EIO_WD_CLOSE;
		1795	req->wd = wd;
		1796	REQ_SEND;
		1797	#else
		1798	eio_wd_close_sync (wd);
		1799	#endif
		1800	}
		1801
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1802	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		1803
1369	void	1804	void
1370	cancel (aio_req_ornot req)	1805	cancel (aio_req_ornot req)
1371	CODE:	1806	CODE:
1372	req_cancel (req);	1807	eio_cancel (req);
1373		1808
1374	void	1809	void
1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1810	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1376	CODE:	1811	PPCODE:
		1812	{
		1813	if (GIMME_V != G_VOID)
		1814	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1815
		1816	if (items > 1)
		1817	{
		1818	SV *cb_cv =get_cb (callback);
		1819
1377	SvREFCNT_dec (req->callback);	1820	SvREFCNT_dec (req->callback);
1378	req->callback = newSVsv (callback);	1821	req->callback = SvREFCNT_inc (cb_cv);
		1822	}
		1823	}
1379		1824
1380	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1825	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1381		1826
1382	void	1827	void
1383	add (aio_req grp, ...)	1828	add (aio_req grp, ...)
1384	PPCODE:	1829	PPCODE:
1385	{	1830	{
1386	int i;	1831	int i;
1387	aio_req req;
1388		1832
1389	if (grp->fd == 2)	1833	if (grp->int1 == 2)
1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1834	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1391		1835
1392	for (i = 1; i < items; ++i )	1836	for (i = 1; i < items; ++i )
1393	{	1837	{
		1838	aio_req req;
		1839
1394	if (GIMME_V != G_VOID)	1840	if (GIMME_V != G_VOID)
1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1841	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1396		1842
1397	req = SvAIO_REQ (ST (i));	1843	req = SvAIO_REQ (ST (i));
1398		1844
1399	if (req)	1845	if (req)
1400	{	1846	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	}
1412	}	1847	}
1413	}	1848	}
		1849
		1850	void
		1851	cancel_subs (aio_req_ornot req)
		1852	CODE:
		1853	req_cancel_subs (req);
1414		1854
1415	void	1855	void
1416	result (aio_req grp, ...)	1856	result (aio_req grp, ...)
1417	CODE:	1857	CODE:
1418	{	1858	{
1419	int i;	1859	int i;
		1860	AV *av;
		1861
		1862	grp->errorno = errno;
		1863
1420	AV *av = newAV ();	1864	av = newAV ();
		1865	av_extend (av, items - 1);
1421		1866
1422	for (i = 1; i < items; ++i )	1867	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	1868	av_push (av, newSVsv (ST (i)));
1424		1869
1425	SvREFCNT_dec (grp->data);	1870	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	1871	grp->sv1 = (SV *)av;
1427	}	1872	}
		1873
		1874	void
		1875	errno (aio_req grp, int errorno = errno)
		1876	CODE:
		1877	grp->errorno = errorno;
1428		1878
1429	void	1879	void
1430	limit (aio_req grp, int limit)	1880	limit (aio_req grp, int limit)
1431	CODE:	1881	CODE:
1432	grp->fd2 = limit;	1882	eio_grp_limit (grp, limit);
1433	aio_grp_feed (grp);
1434		1883
1435	void	1884	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	1885	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	1886	CODE:
1438	{	1887	{
1439	SvREFCNT_dec (grp->fh2);	1888	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	1889	grp->sv2 = newSVsv (callback);
		1890	grp->feed = aio_grp_feed;
1441		1891
1442	if (grp->fd2 <= 0)	1892	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	1893	grp->int2 = 2;
1444		1894
1445	aio_grp_feed (grp);	1895	eio_grp_limit (grp, grp->int2);
1446	}	1896	}
1447		1897

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