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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.197 by root, Tue Sep 27 01:43:03 2011 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	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# 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
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# 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
42	# else	295	# else
43	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	297	# endif
45	#endif	298	#endif
46		299	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	301	#endif
51		302	#ifndef MAP_LOCKED
52	#if __ia64	303	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#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
59		314
60	/* buffer size for various temporary buffers */	315	#ifndef makedev
61	#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
62		324
63	#define dBUF \	325	#ifndef PAGESIZE
64	char *aio_buf = malloc (AIO_BUFSIZE); \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	if (!aio_buf) \	327	#endif
66	return -1;
67
68	#define fBUF free (aio_buf)
69		328
70	enum {	329	enum {
71	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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	};	331	};
83		332
84	#define AIO_REQ_KLASS "IO::AIO::REQ"
85	#define AIO_GRP_KLASS "IO::AIO::GRP"
86
87	typedef struct aio_cb
88	{
89	struct aio_cb *volatile next;
90
91	SV *data, *callback;
92	SV *fh, *fh2;
93	void *dataptr, *data2ptr;
94	Stat_t *statdata;
95	off_t offset;
96	size_t length;
97	ssize_t result;
98
99	STRLEN dataoffset;
100	int type;
101	int fd, fd2;
102	int errorno;
103	mode_t mode; /* open */
104
105	unsigned char flags;
106	unsigned char pri;
107
108	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;
111
112	enum {
113	FLAG_CANCELLED = 0x01,
114	};
115
116	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
117	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
118		336
119	enum {	337	static SV *on_next_submit;
120	PRI_MIN = -4,	338	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;	339	static int max_outstanding;
133	static int respipe [2];
134		340
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	static s_epipe respipe;
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140		342
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	343	static void req_destroy (aio_req req);
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);	344	static void req_cancel (aio_req req);
200	static void req_free (aio_req req);	345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
201		357
202	/* must be called at most once */	358	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
204	{	360	{
205	if (!req->self)	361	if (!req->self)
206	{	362	{
207	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
209	}	365	}
210		366
211	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		368	}
		369
		370	static SV *
		371	newSVaio_wd (aio_wd wd)
		372	{
		373	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
212	}	374	}
213		375
214	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
215	{	377	{
216	MAGIC *mg;	378	MAGIC *mg;
217		379
218	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	380	if (!SvROK (sv)
		381	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		382	&& SvSTASH (SvRV (sv)) != aio_req_stash
		383	&& !sv_derived_from (sv, "IO::AIO::REQ")))
219	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
220		385
221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
222		387
223	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	389	}
225		390
		391	static aio_wd SvAIO_WD (SV *sv)
		392	{
		393	if (!SvROK (sv)
		394	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		395	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		396	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		397
		398	return (aio_wd)(long)SvIVX (SvRV (sv));
		399	}
		400
226	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
227	{	402	{
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	if (grp->sv2 && SvOK (grp->sv2))
229	{	404	{
230	int old_len = grp->length;
231
232	if (grp->fh2 && SvOK (grp->fh2))
233	{
234	dSP;	405	dSP;
235		406
236	ENTER;	407	ENTER;
237	SAVETMPS;	408	SAVETMPS;
238	PUSHMARK (SP);	409	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	410	XPUSHs (req_sv (grp, aio_grp_stash));
240	PUTBACK;	411	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	413	SPAGAIN;
243	FREETMPS;	414	FREETMPS;
244	LEAVE;	415	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	}	416	}
255	}	417	}
256		418
257	static void aio_grp_dec (aio_req grp)	419	static void req_submit (eio_req *req)
258	{	420	{
259	--grp->length;	421	eio_submit (req);
260		422
261	/* call feeder, if applicable */	423	if (expect_false (on_next_submit))
262	aio_grp_feed (grp);
263
264	/* finish, if done */
265	if (!grp->length && grp->fd)
266	{	424	{
267	req_invoke (grp);	425	dSP;
268	req_free (grp);	426	SV *cb = sv_2mortal (on_next_submit);
		427
		428	on_next_submit = 0;
		429
		430	PUSHMARK (SP);
		431	PUTBACK;
		432	call_sv (cb, G_DISCARD | G_EVAL);
269	}	433	}
270	}	434	}
271		435
272	static void poll_wait ()	436	static int req_invoke (eio_req *req)
273	{	437	{
274	fd_set rfd;	438	if (req->flags & FLAG_SV2_RO_OFF)
		439	SvREADONLY_off (req->sv2);
275		440
276	while (nreqs)	441	if (!EIO_CANCELLED (req) && req->callback)
277	{	442	{
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;	443	dSP;
300		444	static SV *sv_result_cache; /* caches the result integer SV */
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	445	SV *sv_result;
302	{
303	errno = req->errorno;
304		446
305	ENTER;	447	ENTER;
306	SAVETMPS;	448	SAVETMPS;
307	PUSHMARK (SP);	449	PUSHMARK (SP);
308	EXTEND (SP, 1);	450	EXTEND (SP, 1);
309		451
		452	/* do not recreate the result IV from scratch each time */
		453	if (expect_true (sv_result_cache))
		454	{
		455	sv_result = sv_result_cache; sv_result_cache = 0;
		456	SvIV_set (sv_result, req->result);
		457	SvIOK_only (sv_result);
		458	}
		459	else
		460	{
		461	sv_result = newSViv (req->result);
		462	SvREADONLY_on (sv_result);
		463	}
		464
310	switch (req->type)	465	switch (req->type)
311	{	466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
312	case REQ_READDIR:	471	case EIO_READDIR:
313	{	472	{
314	SV *rv = &PL_sv_undef;	473	SV *rv = &PL_sv_undef;
315		474
316	if (req->result >= 0)	475	if (req->result >= 0)
317	{	476	{
		477	int i;
318	char *buf = req->data2ptr;	478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
319	AV *av = newAV ();	480	AV *av = newAV ();
320		481
321	while (req->result)	482	av_extend (av, req->result - 1);
		483
		484	for (i = 0; i < req->result; ++i)
322	{	485	{
		486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		489
		490	if (req->int1 & EIO_READDIR_CUSTOM2)
		491	{
		492	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		493	AV *avent = newAV ();
		494
		495	av_extend (avent, 2);
		496
		497	if (!sv_type [ent->type])
		498	{
		499	sv_type [ent->type] = newSViv (ent->type);
		500	SvREADONLY_on (sv_type [ent->type]);
		501	}
		502
		503	av_store (avent, 0, namesv);
		504	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		505	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		506
		507	av_store (av, i, newRV_noinc ((SV *)avent));
		508	}
		509	else
		510	av_store (av, i, namesv);
		511
		512	++ent;
		513	}
		514	else
		515	{
323	SV *sv = newSVpv (buf, 0);	516	SV *name = newSVpv (names, 0);
324
325	av_push (av, sv);	517	av_store (av, i, name);
326	buf += SvCUR (sv) + 1;	518	names += SvCUR (name) + 1;
327	req->result--;	519	}
328	}	520	}
329		521
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	522	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	523	}
332		524
333	PUSHs (rv);	525	PUSHs (rv);
		526
		527	if (req->int1 & EIO_READDIR_CUSTOM1)
		528	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
334	}	529	}
335	break;	530	break;
336		531
337	case REQ_OPEN:	532	case EIO_OPEN:
338	{	533	{
339	/* convert fd to fh */	534	/* convert fd to fh */
340	SV *fh;	535	SV *fh = &PL_sv_undef;
341		536
342	PUSHs (sv_2mortal (newSViv (req->result)));	537	if (req->result >= 0)
343	PUTBACK;	538	{
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	539	GV *gv = (GV *)sv_newmortal ();
345	SPAGAIN;	540	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		541	char sym [64];
		542	int symlen;
		543
		544	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		545	gv_init (gv, aio_stash, sym, symlen, 0);
346		546
347	fh = SvREFCNT_inc (POPs);	547	symlen = snprintf (
		548	sym,
		549	sizeof (sym),
		550	"%s&=%d",
		551	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		552	(int)req->result
		553	);
348		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
349	PUSHMARK (SP);	559	PUSHs (fh);
350	XPUSHs (sv_2mortal (fh));
351	}	560	}
352	break;	561	break;
353		562
		563	case EIO_STATVFS:
		564	case EIO_FSTATVFS:
		565	{
		566	SV *rv = &PL_sv_undef;
		567
		568	#ifndef _WIN32
		569	if (req->result >= 0)
		570	{
		571	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		572	HV *hv = newHV ();
		573
		574	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		575
		576	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		577	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		578	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		579	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		580	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		581	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		582	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		583	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		584	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		585	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		586	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		587	}
		588	#endif
		589
		590	PUSHs (rv);
		591	}
		592
		593	break;
		594
354	case REQ_GROUP:	595	case EIO_GROUP:
355	req->fd = 2; /* mark group as finished */	596	req->int1 = 2; /* mark group as finished */
356		597
357	if (req->data)	598	if (req->sv1)
358	{	599	{
359	int i;	600	int i;
360	AV *av = (AV *)req->data;	601	AV *av = (AV *)req->sv1;
361		602
362	EXTEND (SP, AvFILL (av) + 1);	603	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	604	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	605	PUSHs (*av_fetch (av, i, 0));
365	}	606	}
366	break;	607	break;
367		608
368	case REQ_NOP:	609	case EIO_NOP:
369	case REQ_BUSY:	610	case EIO_BUSY:
370	break;	611	break;
371		612
		613	case EIO_READLINK:
		614	case EIO_REALPATH:
		615	if (req->result > 0)
		616	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		617	break;
		618
		619	case EIO_STAT:
		620	case EIO_LSTAT:
		621	case EIO_FSTAT:
		622	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		623
		624	if (!(PL_laststatval = req->result))
		625	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		626	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		627
		628	PUSHs (sv_result);
		629	break;
		630
		631	case EIO_READ:
		632	{
		633	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		634	*SvEND (req->sv2) = 0;
		635	SvPOK_only (req->sv2);
		636	SvSETMAGIC (req->sv2);
		637	PUSHs (sv_result);
		638	}
		639	break;
		640
		641	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		642	if (req->result > 0)
		643	SvIV_set (sv_result, 0);
		644	/* FALLTHROUGH */
		645
372	default:	646	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	647	PUSHs (sv_result);
374	break;	648	break;
375	}	649	}
376		650
		651	errno = req->errorno;
377		652
378	PUTBACK;	653	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	654	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
380	SPAGAIN;	655	SPAGAIN;
		656
		657	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		658	SvREFCNT_dec (sv_result);
		659	else
		660	sv_result_cache = sv_result;
381		661
382	FREETMPS;	662	FREETMPS;
383	LEAVE;	663	LEAVE;
		664
		665	PUTBACK;
384	}	666	}
385		667
386	if (req->grp)	668	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	}	669	}
406		670
407	static void req_free (aio_req req)	671	static void req_destroy (aio_req req)
408	{	672	{
409	if (req->self)	673	if (req->self)
410	{	674	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	675	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	676	SvREFCNT_dec (req->self);
413	}	677	}
414		678
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	679	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	680	SvREFCNT_dec (req->sv2);
		681	SvREFCNT_dec (req->sv3);
		682	SvREFCNT_dec (req->sv4);
418	SvREFCNT_dec (req->callback);	683	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420
421	if (req->type == REQ_READDIR && req->result >= 0)
422	free (req->data2ptr);
423		684
424	Safefree (req);	685	Safefree (req);
425	}	686	}
426		687
427	static void req_cancel (aio_req req)	688	static void req_cancel_subs (aio_req grp)
428	{	689	{
429	req->flags |= FLAG_CANCELLED;
430
431	if (req->type == REQ_GROUP)	690	if (grp->type != EIO_GROUP)
		691	return;
		692
		693	SvREFCNT_dec (grp->sv2);
		694	grp->sv2 = 0;
		695
		696	eio_grp_cancel (grp);
		697	}
		698
		699	static void create_respipe (void)
		700	{
		701	if (s_epipe_renew (&respipe))
		702	croak ("IO::AIO: unable to initialize result pipe");
		703	}
		704
		705	static void poll_wait (void)
		706	{
		707	while (eio_nreqs ())
432	{	708	{
433	aio_req sub;	709	int size;
434		710
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	711	X_LOCK (reslock);
436	req_cancel (sub);	712	size = res_queue.size;
		713	X_UNLOCK (reslock);
		714
		715	if (size)
		716	return;
		717
		718	etp_maybe_start_thread ();
		719
		720	s_epipe_wait (&respipe);
437	}	721	}
438	}	722	}
439		723
440	static int poll_cb ()	724	static int poll_cb (void)
441	{	725	{
442	dSP;
443	int count = 0;
444	int do_croak = 0;
445	aio_req req;
446
447	for (;;)	726	for (;;)
448	{	727	{
449	pthread_mutex_lock (&reslock);	728	int res = eio_poll ();
450	req = reqq_shift (&res_queue);
451		729
452	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		753	# define munmap(addr,length) (errno = ENOSYS, -1)
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
		768	{
		769	int old_errno = errno;
		770	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		771	errno = old_errno;
		772
		773	mg->mg_obj = 0; /* just in case */
		774
		775	SvREADONLY_off (sv);
		776
		777	if (SvPVX (sv) != mg->mg_ptr)
		778	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		779
		780	SvCUR_set (sv, 0);
		781	SvPVX (sv) = 0;
		782	SvOK_off (sv);
		783
		784	return 0;
		785	}
		786
		787	static MGVTBL mmap_vtbl = {
		788	0, 0, 0, 0, mmap_free
		789	};
		790
		791	/*****************************************************************************/
		792
		793	static SV * get_cb (SV *cb_sv)
		794	{
		795	SvGETMAGIC (cb_sv);
		796	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		797	}
		798
		799	#define dREQ \
		800	SV *cb_cv; \
		801	aio_req req; \
		802	int req_pri = next_pri; \
		803	next_pri = EIO_PRI_DEFAULT; \
		804	\
		805	cb_cv = get_cb (callback); \
		806	\
		807	Newz (0, req, 1, eio_req); \
		808	if (!req) \
		809	croak ("out of memory during eio_req allocation"); \
		810	\
		811	req->callback = SvREFCNT_inc (cb_cv); \
		812	req->pri = req_pri
		813
		814	#define REQ_SEND \
		815	PUTBACK; \
		816	req_submit (req); \
		817	SPAGAIN; \
		818	\
		819	if (GIMME_V != G_VOID) \
		820	XPUSHs (req_sv (req, aio_req_stash));
		821
		822	static void
		823	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		824	{
		825	if (SvROK (path))
		826	{
		827	AV *av = (AV *)SvRV (path);
		828	SV *wdob;
		829
		830	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		831	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		832
		833	path = AvARRAY (av)[1];
		834	wdob = AvARRAY (av)[0];
		835
		836	if (SvOK (wdob))
453	{	837	{
454	if (!res_queue.size)	838	*wd = SvAIO_WD (wdob);
455	{	839	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
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;
467
468	--nreqs;
469
470	if (req->type == REQ_QUIT)
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}	840	}
477	else	841	else
478	{	842	*wd = EIO_INVALID_WD;
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	}	843	}
499		844
500	return count;	845	*pathsv = newSVsv (path);
		846	*ptr = SvPVbyte_nolen (*pathsv);
501	}	847	}
502		848
503	static void *aio_proc(void *arg);	849	static void
504		850	req_set_path1 (aio_req req, SV *path)
505	static void start_thread (void)
506	{	851	{
507	sigset_t fullsigset, oldsigset;	852	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
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	}	853	}
523		854
524	static void req_send (aio_req req)	855	static void
		856	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
525	{	857	{
526	while (started < wanted && nreqs >= started)	858	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
527	start_thread ();
528		859
529	++nreqs;	860	switch (SvTYPE (rv))
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	{	861	{
575	end_thread ();	862	case SVt_PVIO:
576	cur--;	863	case SVt_PVLV:
		864	case SVt_PVGV:
		865	req->type = type_fh;
		866	req->sv1 = newSVsv (fh_or_path);
		867	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		868	break;
		869
		870	default:
		871	req->type = type_path;
		872	req_set_path1 (req, fh_or_path);
		873	break;
577	}	874	}
578		875
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}	876	}
585		877
586	static void create_pipe ()	878	MODULE = IO::AIO PACKAGE = IO::AIO
587	{
588	if (pipe (respipe))
589	croak ("unable to initialize result pipe");
590		879
591	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	880	PROTOTYPES: ENABLE
592	croak ("cannot set result pipe to nonblocking mode");
593		881
594	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	882	BOOT:
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	{	883	{
614	ssize_t res;	884	static const struct {
615	off_t ooffset;	885	const char *name;
		886	IV iv;
		887	} *civ, const_iv[] = {
		888	# define const_niv(name, value) { # name, (IV) value },
		889	# define const_iv(name) { # name, (IV) name },
		890	# define const_eio(name) { # name, (IV) EIO_ ## name },
		891	const_iv (EXDEV)
		892	const_iv (ENOSYS)
		893	const_iv (O_RDONLY)
		894	const_iv (O_WRONLY)
		895	const_iv (O_RDWR)
		896	const_iv (O_CREAT)
		897	const_iv (O_TRUNC)
		898	const_iv (O_EXCL)
		899	const_iv (O_APPEND)
616		900
617	pthread_mutex_lock (&preadwritelock);	901	const_iv (O_ASYNC)
618	ooffset = lseek (fd, 0, SEEK_CUR);	902	const_iv (O_DIRECT)
619	lseek (fd, offset, SEEK_SET);	903	const_iv (O_NOATIME)
620	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);
623		904
624	return res;	905	const_iv (O_CLOEXEC)
625	}	906	const_iv (O_NOCTTY)
		907	const_iv (O_NOFOLLOW)
		908	const_iv (O_NONBLOCK)
		909	const_iv (O_EXEC)
		910	const_iv (O_SEARCH)
		911	const_iv (O_DIRECTORY)
		912	const_iv (O_DSYNC)
		913	const_iv (O_RSYNC)
		914	const_iv (O_SYNC)
		915	const_iv (O_TTY_INIT)
626		916
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	917	const_iv (S_IFIFO)
628	{	918	const_iv (S_IFCHR)
629	ssize_t res;	919	const_iv (S_IFBLK)
630	off_t ooffset;	920	const_iv (S_IFLNK)
		921	const_iv (S_IFREG)
		922	const_iv (S_IFDIR)
		923	const_iv (S_IFWHT)
		924	const_iv (S_IFSOCK)
		925	const_iv (S_IFMT)
631		926
632	pthread_mutex_lock (&preadwritelock);	927	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
633	ooffset = lseek (fd, 0, SEEK_CUR);	928	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
634	lseek (fd, offset, SEEK_SET);	929	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
635	res = write (fd, buf, count);	930	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
636	lseek (fd, offset, SEEK_SET);	931	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
637	pthread_mutex_unlock (&preadwritelock);	932	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
638		933
639	return res;	934	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
640	}	935	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
641	#endif	936	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		937	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		938	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
642		939
643	#if !HAVE_FDATASYNC	940	const_iv (ST_RDONLY)
644	# define fdatasync fsync	941	const_iv (ST_NOSUID)
645	#endif	942	const_iv (ST_NODEV)
		943	const_iv (ST_NOEXEC)
		944	const_iv (ST_SYNCHRONOUS)
		945	const_iv (ST_MANDLOCK)
		946	const_iv (ST_WRITE)
		947	const_iv (ST_APPEND)
		948	const_iv (ST_IMMUTABLE)
		949	const_iv (ST_NOATIME)
		950	const_iv (ST_NODIRATIME)
		951	const_iv (ST_RELATIME)
646		952
647	#if !HAVE_READAHEAD	953	const_iv (PROT_NONE)
648	# define readahead aio_readahead	954	const_iv (PROT_EXEC)
		955	const_iv (PROT_READ)
		956	const_iv (PROT_WRITE)
649		957
650	static ssize_t readahead (int fd, off_t offset, size_t count)	958	/*const_iv (MAP_FIXED)*/
651	{	959	const_iv (MAP_PRIVATE)
652	dBUF;	960	const_iv (MAP_SHARED)
		961	const_iv (MAP_ANONYMOUS)
653		962
654	while (count > 0)	963	/* linuxish */
655	{	964	const_iv (MAP_HUGETLB)
656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	965	const_iv (MAP_LOCKED)
		966	const_iv (MAP_NORESERVE)
		967	const_iv (MAP_POPULATE)
		968	const_iv (MAP_NONBLOCK)
657		969
658	pread (fd, aio_buf, len, offset);	970	const_eio (MCL_FUTURE)
659	offset += len;	971	const_eio (MCL_CURRENT)
660	count -= len;
661	}
662		972
663	fBUF;	973	const_eio (MS_ASYNC)
		974	const_eio (MS_INVALIDATE)
		975	const_eio (MS_SYNC)
664		976
665	errno = 0;	977	const_eio (MT_MODIFY)
666	}
667	#endif
668		978
669	#if !HAVE_READDIR_R	979	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
670	# define readdir_r aio_readdir_r	980	const_eio (SYNC_FILE_RANGE_WRITE)
		981	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
671		982
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	983	const_eio (FALLOC_FL_KEEP_SIZE)
673
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{
676	struct dirent *e;
677	int errorno;
678		984
679	pthread_mutex_lock (&readdirlock);	985	const_eio (READDIR_DENTS)
		986	const_eio (READDIR_DIRS_FIRST)
		987	const_eio (READDIR_STAT_ORDER)
		988	const_eio (READDIR_FOUND_UNKNOWN)
680		989
681	e = readdir (dirp);	990	const_eio (DT_UNKNOWN)
682	errorno = errno;	991	const_eio (DT_FIFO)
683		992	const_eio (DT_CHR)
684	if (e)	993	const_eio (DT_DIR)
685	{	994	const_eio (DT_BLK)
686	*res = ent;	995	const_eio (DT_REG)
687	strcpy (ent->d_name, e->d_name);	996	const_eio (DT_LNK)
688	}	997	const_eio (DT_SOCK)
689	else	998	const_eio (DT_WHT)
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	}	999	};
724		1000
725	# elif __hpux	1001	aio_stash = gv_stashpv ("IO::AIO" , 1);
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	1002	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1003	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1004	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
727		1005
728	# elif __solaris	1006	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
729	{	1007	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
730	struct sendfilevec vec;
731	size_t sbytes;
732		1008
733	vec.sfv_fd = ifd;	1009	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
734	vec.sfv_flag = 0;
735	vec.sfv_off = offset;
736	vec.sfv_len = count;
737		1010
738	res = sendfilev (ofd, &vec, 1, &sbytes);	1011	reinit ();
		1012	}
739		1013
740	if (res < 0 && sbytes)	1014	void
		1015	reinit ()
		1016	PROTOTYPE:
		1017
		1018	void
		1019	max_poll_reqs (unsigned int nreqs)
		1020	PROTOTYPE: $
		1021	CODE:
		1022	eio_set_max_poll_reqs (nreqs);
		1023
		1024	void
		1025	max_poll_time (double nseconds)
		1026	PROTOTYPE: $
		1027	CODE:
		1028	eio_set_max_poll_time (nseconds);
		1029
		1030	void
		1031	min_parallel (unsigned int nthreads)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_min_parallel (nthreads);
		1035
		1036	void
		1037	max_parallel (unsigned int nthreads)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_parallel (nthreads);
		1041
		1042	void
		1043	max_idle (unsigned int nthreads)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_max_idle (nthreads);
		1047
		1048	void
		1049	idle_timeout (unsigned int seconds)
		1050	PROTOTYPE: $
		1051	CODE:
		1052	eio_set_idle_timeout (seconds);
		1053
		1054	void
		1055	max_outstanding (unsigned int maxreqs)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	max_outstanding = maxreqs;
		1059
		1060	void
		1061	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_WD_OPEN;
		1067	req_set_path1 (req, pathname);
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
		1073	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1074	PPCODE:
		1075	{
		1076	dREQ;
		1077
		1078	req->type = EIO_OPEN;
		1079	req_set_path1 (req, pathname);
		1080	req->int1 = flags;
		1081	req->int2 = mode;
		1082
		1083	REQ_SEND;
		1084	}
		1085
		1086	void
		1087	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1088	ALIAS:
		1089	aio_fsync = EIO_FSYNC
		1090	aio_fdatasync = EIO_FDATASYNC
		1091	aio_syncfs = EIO_SYNCFS
		1092	PPCODE:
		1093	{
		1094	int fd = s_fileno_croak (fh, 0);
		1095	dREQ;
		1096
		1097	req->type = ix;
		1098	req->sv1 = newSVsv (fh);
		1099	req->int1 = fd;
		1100
		1101	REQ_SEND (req);
		1102	}
		1103
		1104	void
		1105	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1106	PPCODE:
		1107	{
		1108	int fd = s_fileno_croak (fh, 0);
		1109	dREQ;
		1110
		1111	req->type = EIO_SYNC_FILE_RANGE;
		1112	req->sv1 = newSVsv (fh);
		1113	req->int1 = fd;
		1114	req->offs = offset;
741	res = sbytes;	1115	req->size = nbytes;
742	}	1116	req->int2 = flags;
743		1117
744	# endif	1118	REQ_SEND (req);
		1119	}
		1120
		1121	void
		1122	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1123	PPCODE:
		1124	{
		1125	int fd = s_fileno_croak (fh, 0);
		1126	dREQ;
		1127
		1128	req->type = EIO_FALLOCATE;
		1129	req->sv1 = newSVsv (fh);
		1130	req->int1 = fd;
		1131	req->int2 = mode;
		1132	req->offs = offset;
		1133	req->size = len;
		1134
		1135	REQ_SEND (req);
		1136	}
		1137
		1138	void
		1139	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1143	int fd = s_fileno_croak (fh, 0);
		1144	dREQ;
		1145
		1146	if (expect_false (close_fd < 0))
		1147	{
		1148	int pipefd [2];
		1149
		1150	if (
		1151	#ifdef _WIN32
		1152	_pipe (pipefd, 1, _O_BINARY) < 0
745	#else	1153	#else
746	res = -1;	1154	pipe (pipefd) < 0
747	errno = ENOSYS;	1155	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
748	#endif	1156	#endif
749		1157	|| close (pipefd [1]) < 0
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	{	1158	)
771	if (cnt && !res) res = -1;	1159	abort (); /*D*/
772	break;
773	}
774		1160
775	cnt = write (ofd, aio_buf, cnt);	1161	close_fd = pipefd [0];
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	}	1162	}
845	}
846		1163
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	}
973
974	static void atfork_child (void)
975	{
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 ();
989
990	atfork_parent ();
991	}
992
993	#define dREQ \
994	aio_req req; \
995	int req_pri = next_pri; \
996	next_pri = DEFAULT_PRI + PRI_BIAS; \
997	\
998	if (SvOK (callback) && !SvROK (callback)) \
999	croak ("callback must be undef or of reference type"); \
1000	\
1001	Newz (0, req, 1, aio_cb); \
1002	if (!req) \
1003	croak ("out of memory during aio_req allocation"); \
1004	\
1005	req->callback = newSVsv (callback); \
1006	req->pri = req_pri
1007
1008	#define REQ_SEND \
1009	req_send (req); \
1010	\
1011	if (GIMME_V != G_VOID) \
1012	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1013
1014	MODULE = IO::AIO PACKAGE = IO::AIO
1015
1016	PROTOTYPES: ENABLE
1017
1018	BOOT:
1019	{
1020	HV *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
1025	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1027	}
1028
1029	void
1030	min_parallel (nthreads)
1031	int nthreads
1032	PROTOTYPE: $
1033
1034	void
1035	max_parallel (nthreads)
1036	int nthreads
1037	PROTOTYPE: $
1038
1039	int
1040	max_outstanding (nreqs)
1041	int nreqs
1042	PROTOTYPE: $
1043	CODE:
1044	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;
1046
1047	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1049	SV * pathname
1050	int flags
1051	int mode
1052	SV * callback
1053	PROTOTYPE: $$$;$
1054	PPCODE:
1055	{
1056	dREQ;
1057
1058	req->type = REQ_OPEN;	1164	req->type = EIO_DUP2;
		1165	req->int1 = close_fd;
1059	req->data = newSVsv (pathname);	1166	req->sv2 = newSVsv (fh);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1167	req->int2 = fd;
1061	req->fd = flags;
1062	req->mode = mode;
1063		1168
1064	REQ_SEND;	1169	REQ_SEND (req);
1065	}	1170	}
1066		1171
1067	void	1172	void
1068	aio_close (fh,callback=&PL_sv_undef)	1173	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$
1072	ALIAS:	1174	ALIAS:
1073	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC
1076	PPCODE:
1077	{
1078	dREQ;
1079
1080	req->type = ix;
1081	req->fh = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083
1084	REQ_SEND (req);
1085	}
1086
1087	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:
1096	aio_read = REQ_READ	1175	aio_read = EIO_READ
1097	aio_write = REQ_WRITE	1176	aio_write = EIO_WRITE
1098	PROTOTYPE: $$$$$;$
1099	PPCODE:	1177	PPCODE:
1100	{	1178	{
1101	aio_req req;
1102	STRLEN svlen;	1179	STRLEN svlen;
		1180	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1103	char *svptr = SvPVbyte (data, svlen);	1181	char *svptr = SvPVbyte (data, svlen);
1104		1182	UV len = SvUV (length);
1105	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);
1107		1183
1108	if (dataoffset < 0)	1184	if (dataoffset < 0)
1109	dataoffset += svlen;	1185	dataoffset += svlen;
1110		1186
1111	if (dataoffset < 0 || dataoffset > svlen)	1187	if (dataoffset < 0 || dataoffset > svlen)
1112	croak ("data offset outside of string");	1188	croak ("dataoffset outside of data scalar");
1113		1189
1114	if (ix == REQ_WRITE)	1190	if (ix == EIO_WRITE)
1115	{	1191	{
1116	/* write: check length and adjust. */	1192	/* write: check length and adjust. */
1117	if (length < 0 || length + dataoffset > svlen)	1193	if (!SvOK (length) || len + dataoffset > svlen)
1118	length = svlen - dataoffset;	1194	len = svlen - dataoffset;
1119	}	1195	}
1120	else	1196	else
1121	{	1197	{
1122	/* read: grow scalar as necessary */	1198	/* read: check type and grow scalar as necessary */
		1199	SvUPGRADE (data, SVt_PV);
1123	svptr = SvGROW (data, length + dataoffset);	1200	svptr = SvGROW (data, len + dataoffset + 1);
1124	}	1201	}
1125
1126	if (length < 0)
1127	croak ("length must not be negative");
1128		1202
1129	{	1203	{
1130	dREQ;	1204	dREQ;
1131		1205
1132	req->type = ix;	1206	req->type = ix;
1133	req->fh = newSVsv (fh);	1207	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1208	req->int1 = fd;
1135	: IoOFP (sv_2io (fh)));	1209	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136	req->offset = offset;	1210	req->size = len;
1137	req->length = length;
1138	req->data = SvREFCNT_inc (data);	1211	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1212	req->ptr2 = (char *)svptr + dataoffset;
		1213	req->stroffset = dataoffset;
1140		1214
1141	if (!SvREADONLY (data))	1215	if (!SvREADONLY (data))
1142	{	1216	{
1143	SvREADONLY_on (data);	1217	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1218	req->flags |= FLAG_SV2_RO_OFF;
1145	}	1219	}
1146		1220
1147	REQ_SEND;	1221	REQ_SEND;
1148	}	1222	}
1149	}	1223	}
1150		1224
1151	void	1225	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1226	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * out_fh	1227	ALIAS:
1154	SV * in_fh	1228	aio_readlink = EIO_READLINK
1155	UV in_offset	1229	aio_realpath = EIO_REALPATH
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$
1159	PPCODE:	1230	PPCODE:
1160	{	1231	{
		1232	dREQ;
		1233
		1234	req->type = ix;
		1235	req_set_path1 (req, pathname);
		1236
		1237	REQ_SEND;
		1238	}
		1239
		1240	void
		1241	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1242	PPCODE:
		1243	{
		1244	int ifd = s_fileno_croak (in_fh , 0);
		1245	int ofd = s_fileno_croak (out_fh, 1);
1161	dREQ;	1246	dREQ;
1162		1247
1163	req->type = REQ_SENDFILE;	1248	req->type = EIO_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1249	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1250	req->int1 = ofd;
1166	req->fh2 = newSVsv (in_fh);	1251	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1252	req->int2 = ifd;
1168	req->offset = in_offset;	1253	req->offs = in_offset;
1169	req->length = length;	1254	req->size = length;
1170		1255
1171	REQ_SEND;	1256	REQ_SEND;
1172	}	1257	}
1173		1258
1174	void	1259	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1260	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$
1181	PPCODE:	1261	PPCODE:
1182	{	1262	{
		1263	int fd = s_fileno_croak (fh, 0);
1183	dREQ;	1264	dREQ;
1184		1265
1185	req->type = REQ_READAHEAD;	1266	req->type = EIO_READAHEAD;
1186	req->fh = newSVsv (fh);	1267	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1268	req->int1 = fd;
1188	req->offset = offset;	1269	req->offs = offset;
1189	req->length = length;	1270	req->size = length;
1190		1271
1191	REQ_SEND;	1272	REQ_SEND;
1192	}	1273	}
1193		1274
1194	void	1275	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1276	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	1277	ALIAS:
1199	aio_stat = REQ_STAT	1278	aio_stat = EIO_STAT
1200	aio_lstat = REQ_LSTAT	1279	aio_lstat = EIO_LSTAT
		1280	aio_statvfs = EIO_STATVFS
1201	PPCODE:	1281	PPCODE:
1202	{	1282	{
1203	dREQ;	1283	dREQ;
1204		1284
1205	New (0, req->statdata, 1, Stat_t);
1206	if (!req->statdata)
1207	{
1208	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");
1210	}
1211
1212	if (SvPOK (fh_or_path))
1213	{
1214	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);
1217	}
1218	else
1219	{
1220	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);	1285	req->sv1 = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1286	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1223	}
1224
1225	REQ_SEND;	1287	REQ_SEND;
1226	}	1288	}
1227		1289
		1290	UV
		1291	major (UV dev)
		1292	ALIAS:
		1293	minor = 1
		1294	CODE:
		1295	RETVAL = ix ? major (dev) : minor (dev);
		1296	OUTPUT:
		1297	RETVAL
		1298
		1299	UV
		1300	makedev (UV maj, UV min)
		1301	CODE:
		1302	RETVAL = makedev (maj, min);
		1303	OUTPUT:
		1304	RETVAL
		1305
1228	void	1306	void
		1307	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1313	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1314	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1315
		1316	REQ_SEND;
		1317	}
		1318
		1319	void
		1320	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1321	PPCODE:
		1322	{
		1323	dREQ;
		1324
		1325	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1326	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1333	ALIAS:
		1334	aio_chmod = EIO_CHMOD
		1335	aio_mkdir = EIO_MKDIR
		1336	PPCODE:
		1337	{
		1338	dREQ;
		1339
		1340	req->int2 = mode;
		1341	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1353	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1354	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->type = EIO_READDIR;
		1366	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1367
		1368	if (flags & EIO_READDIR_DENTS)
		1369	req->int1 |= EIO_READDIR_CUSTOM2;
		1370
		1371	req_set_path1 (req, pathname);
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1377	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	1378	ALIAS:
1233	aio_unlink = REQ_UNLINK	1379	aio_unlink = EIO_UNLINK
1234	aio_rmdir = REQ_RMDIR	1380	aio_rmdir = EIO_RMDIR
1235	aio_readdir = REQ_READDIR	1381	aio_readdir = EIO_READDIR
1236	PPCODE:	1382	PPCODE:
1237	{	1383	{
1238	dREQ;	1384	dREQ;
1239		1385
1240	req->type = ix;	1386	req->type = ix;
1241	req->data = newSVsv (pathname);	1387	req_set_path1 (req, pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1394	ALIAS:
		1395	aio_link = EIO_LINK
		1396	aio_symlink = EIO_SYMLINK
		1397	aio_rename = EIO_RENAME
		1398	PPCODE:
		1399	{
		1400	dREQ;
		1401	eio_wd wd2;
		1402
		1403	req->type = ix;
		1404	req_set_path1 (req, oldpath);
		1405	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1406	req->int3 = (long)wd2;
1243		1407
1244	REQ_SEND;	1408	REQ_SEND;
1245	}	1409	}
1246		1410
1247	void	1411	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1412	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:	1413	PPCODE:
1257	{	1414	{
1258	dREQ;	1415	dREQ;
1259		1416
1260	req->type = ix;	1417	req->type = EIO_MKNOD;
1261	req->fh = newSVsv (oldpath);	1418	req->int2 = (mode_t)mode;
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1419	req->offs = dev;
1263	req->data = newSVsv (newpath);	1420	req_set_path1 (req, pathname);
1264	req->dataptr = SvPVbyte_nolen (req->data);
1265		1421
1266	REQ_SEND;	1422	REQ_SEND;
1267	}	1423	}
1268		1424
1269	void	1425	void
		1426	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1427	ALIAS:
		1428	aio_mtouch = EIO_MTOUCH
		1429	aio_msync = EIO_MSYNC
		1430	PPCODE:
		1431	{
		1432	STRLEN svlen;
		1433	char *svptr = SvPVbyte (data, svlen);
		1434	UV len = SvUV (length);
		1435
		1436	if (offset < 0)
		1437	offset += svlen;
		1438
		1439	if (offset < 0 || offset > svlen)
		1440	croak ("offset outside of scalar");
		1441
		1442	if (!SvOK (length) || len + offset > svlen)
		1443	len = svlen - offset;
		1444
		1445	{
		1446	dREQ;
		1447
		1448	req->type = ix;
		1449	req->sv2 = SvREFCNT_inc (data);
		1450	req->ptr2 = (char *)svptr + offset;
		1451	req->size = len;
		1452	req->int1 = flags;
		1453
		1454	REQ_SEND;
		1455	}
		1456	}
		1457
		1458	void
		1459	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1460	PPCODE:
		1461	{
		1462	STRLEN svlen;
		1463	char *svptr = SvPVbyte (data, svlen);
		1464	UV len = SvUV (length);
		1465
		1466	if (offset < 0)
		1467	offset += svlen;
		1468
		1469	if (offset < 0 || offset > svlen)
		1470	croak ("offset outside of scalar");
		1471
		1472	if (!SvOK (length) || len + offset > svlen)
		1473	len = svlen - offset;
		1474
		1475	{
		1476	dREQ;
		1477
		1478	req->type = EIO_MLOCK;
		1479	req->sv2 = SvREFCNT_inc (data);
		1480	req->ptr2 = (char *)svptr + offset;
		1481	req->size = len;
		1482
		1483	REQ_SEND;
		1484	}
		1485	}
		1486
		1487	void
		1488	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1489	PPCODE:
		1490	{
		1491	dREQ;
		1492
		1493	req->type = EIO_MLOCKALL;
		1494	req->int1 = flags;
		1495
		1496	REQ_SEND;
		1497	}
		1498
		1499	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1500	aio_busy (double delay, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1501	PPCODE:
1274	{	1502	{
1275	dREQ;	1503	dREQ;
1276		1504
1277	req->type = REQ_BUSY;	1505	req->type = EIO_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1506	req->nv1 = delay < 0. ? 0. : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1280		1507
1281	REQ_SEND;	1508	REQ_SEND;
1282	}	1509	}
1283		1510
1284	void	1511	void
1285	aio_group (callback=&PL_sv_undef)	1512	aio_group (SV *callback=&PL_sv_undef)
1286	SV * callback
1287	PROTOTYPE: ;$
1288	PPCODE:	1513	PPCODE:
1289	{	1514	{
1290	dREQ;	1515	dREQ;
1291		1516
1292	req->type = REQ_GROUP;	1517	req->type = EIO_GROUP;
		1518
1293	req_send (req);	1519	req_submit (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1520	XPUSHs (req_sv (req, aio_grp_stash));
1296	}	1521	}
1297		1522
1298	void	1523	void
1299	aio_nop (callback=&PL_sv_undef)	1524	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback	1525	ALIAS:
		1526	aio_nop = EIO_NOP
		1527	aio_sync = EIO_SYNC
1301	PPCODE:	1528	PPCODE:
1302	{	1529	{
1303	dREQ;	1530	dREQ;
1304		1531
1305	req->type = REQ_NOP;	1532	req->type = ix;
1306		1533
1307	REQ_SEND;	1534	REQ_SEND;
1308	}	1535	}
1309		1536
1310	void	1537	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1538	aioreq_pri (int pri = 0)
1312	CODE:	1539	CODE:
		1540	RETVAL = next_pri;
		1541	if (items > 0)
		1542	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1543	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1544	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1545	next_pri = pri;
		1546	}
		1547	OUTPUT:
		1548	RETVAL
1316		1549
1317	void	1550	void
1318	aioreq_nice (int nice = 0)	1551	aioreq_nice (int nice = 0)
1319	CODE:	1552	CODE:
1320	nice = next_pri - nice;	1553	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1554	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1555	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1556	next_pri = nice;
1324		1557
1325	void	1558	void
1326	flush ()	1559	flush ()
1327	PROTOTYPE:
1328	CODE:	1560	CODE:
1329	while (nreqs)	1561	while (eio_nreqs ())
1330	{	1562	{
1331	poll_wait ();	1563	poll_wait ();
1332	poll_cb ();	1564	poll_cb ();
1333	}	1565	}
1334		1566
1335	void
1336	poll()
1337	PROTOTYPE:
1338	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();
1342	poll_cb ();
1343	}
1344
1345	int	1567	int
1346	poll_fileno()	1568	poll ()
1347	PROTOTYPE:
1348	CODE:	1569	CODE:
1349	RETVAL = respipe [0];	1570	poll_wait ();
1350	OUTPUT:
1351	RETVAL
1352
1353	int
1354	poll_cb(...)
1355	PROTOTYPE:
1356	CODE:
1357	RETVAL = poll_cb ();	1571	RETVAL = poll_cb ();
1358	OUTPUT:	1572	OUTPUT:
1359	RETVAL	1573	RETVAL
1360		1574
1361	void
1362	poll_wait()
1363	PROTOTYPE:
1364	CODE:
1365	if (nreqs)
1366	poll_wait ();
1367
1368	int	1575	int
1369	nreqs()	1576	poll_fileno ()
1370	PROTOTYPE:
1371	CODE:	1577	CODE:
1372	RETVAL = nreqs;	1578	RETVAL = s_epipe_fd (&respipe);
1373	OUTPUT:	1579	OUTPUT:
1374	RETVAL	1580	RETVAL
1375		1581
		1582	int
		1583	poll_cb (...)
		1584	PROTOTYPE:
		1585	CODE:
		1586	RETVAL = poll_cb ();
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	void
		1591	poll_wait ()
		1592	CODE:
		1593	poll_wait ();
		1594
		1595	int
		1596	nreqs ()
		1597	CODE:
		1598	RETVAL = eio_nreqs ();
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	int
		1603	nready ()
		1604	CODE:
		1605	RETVAL = eio_nready ();
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609	int
		1610	npending ()
		1611	CODE:
		1612	RETVAL = eio_npending ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	nthreads ()
		1618	CODE:
		1619	RETVAL = eio_nthreads ();
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	int
		1624	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1625	CODE:
		1626	RETVAL = posix_fadvise (fh, offset, length, advice);
		1627	OUTPUT:
		1628	RETVAL
		1629
		1630	IV
		1631	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1632	CODE:
		1633	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1634	OUTPUT:
		1635	RETVAL
		1636
		1637	void
		1638	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1639	PPCODE:
		1640	sv_unmagic (scalar, MMAP_MAGIC);
		1641	{
		1642	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1643	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1644	if (addr == (void *)-1)
		1645	XSRETURN_NO;
		1646
		1647	sv_force_normal (scalar);
		1648
		1649	/* we store the length in mg_obj, as namlen is I32 :/ */
		1650	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1651	->mg_obj = (SV *)length;
		1652
		1653	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1654
		1655	if (!(prot & PROT_WRITE))
		1656	SvREADONLY_on (scalar);
		1657
		1658	if (SvLEN (scalar))
		1659	Safefree (SvPVX (scalar));
		1660
		1661	SvPVX (scalar) = (char *)addr;
		1662	SvCUR_set (scalar, length);
		1663	SvLEN_set (scalar, 0);
		1664	SvPOK_only (scalar);
		1665
		1666	XSRETURN_YES;
		1667	}
		1668
		1669	void
		1670	munmap (SV *scalar)
		1671	CODE:
		1672	sv_unmagic (scalar, MMAP_MAGIC);
		1673
		1674	int
		1675	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1676	ALIAS:
		1677	mprotect = 1
		1678	CODE:
		1679	{
		1680	STRLEN svlen;
		1681	void *addr = SvPVbyte (scalar, svlen);
		1682	size_t len = SvUV (length);
		1683
		1684	if (offset < 0)
		1685	offset += svlen;
		1686
		1687	if (offset < 0 || offset > svlen)
		1688	croak ("offset outside of scalar");
		1689
		1690	if (!SvOK (length) || len + offset > svlen)
		1691	len = svlen - offset;
		1692
		1693	addr = (void *)(((intptr_t)addr) + offset);
		1694	eio_page_align (&addr, &len);
		1695
		1696	switch (ix)
		1697	{
		1698	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1699	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1700	}
		1701	}
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
		1706	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1707	CODE:
		1708	{
		1709	STRLEN svlen;
		1710	void *addr = SvPVbyte (scalar, svlen);
		1711	size_t len = SvUV (length);
		1712
		1713	if (offset < 0)
		1714	offset += svlen;
		1715
		1716	if (offset < 0 || offset > svlen)
		1717	croak ("offset outside of scalar");
		1718
		1719	if (!SvOK (length) || len + offset > svlen)
		1720	len = svlen - offset;
		1721
		1722	addr = (void *)(((intptr_t)addr) + offset);
		1723	eio_page_align (&addr, &len);
		1724	#if _POSIX_MEMLOCK_RANGE
		1725	RETVAL = munlock (addr, len);
		1726	#else
		1727	RETVAL = ((errno = ENOSYS), -1);
		1728	#endif
		1729	}
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	munlockall ()
		1735	CODE:
		1736	#if _POSIX_MEMLOCK
		1737	munlockall ();
		1738	#else
		1739	RETVAL = -1;
		1740	errno = ENOSYS;
		1741	#endif
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void _on_next_submit (SV *cb)
		1746	CODE:
		1747	SvREFCNT_dec (on_next_submit);
		1748	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1749
1376	PROTOTYPES: DISABLE	1750	PROTOTYPES: DISABLE
1377		1751
		1752	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1753
		1754	BOOT:
		1755	{
		1756	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1757	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1758	}
		1759
		1760	void
		1761	DESTROY (SV *self)
		1762	CODE:
		1763	{
		1764	aio_wd wd = SvAIO_WD (self);
		1765	#if HAVE_AT
		1766	SV *callback = &PL_sv_undef;
		1767	dREQ; /* clobbers next_pri :/ */
		1768	req->type = EIO_WD_CLOSE;
		1769	req->wd = wd;
		1770	REQ_SEND;
		1771	#else
		1772	eio_wd_close_sync (wd);
		1773	#endif
		1774	}
		1775
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1776	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1777
1380	void	1778	void
1381	cancel (aio_req_ornot req)	1779	cancel (aio_req_ornot req)
1382	CODE:	1780	CODE:
1383	req_cancel (req);	1781	eio_cancel (req);
1384		1782
1385	void	1783	void
1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1784	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1387	CODE:	1785	PPCODE:
		1786	{
		1787	if (GIMME_V != G_VOID)
		1788	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1789
		1790	if (items > 1)
		1791	{
		1792	SV *cb_cv =get_cb (callback);
		1793
1388	SvREFCNT_dec (req->callback);	1794	SvREFCNT_dec (req->callback);
1389	req->callback = newSVsv (callback);	1795	req->callback = SvREFCNT_inc (cb_cv);
		1796	}
		1797	}
1390		1798
1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1799	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1392		1800
1393	void	1801	void
1394	add (aio_req grp, ...)	1802	add (aio_req grp, ...)
1395	PPCODE:	1803	PPCODE:
1396	{	1804	{
1397	int i;	1805	int i;
1398	aio_req req;
1399		1806
1400	if (grp->fd == 2)	1807	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1808	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1809
1403	for (i = 1; i < items; ++i )	1810	for (i = 1; i < items; ++i )
1404	{	1811	{
		1812	aio_req req;
		1813
1405	if (GIMME_V != G_VOID)	1814	if (GIMME_V != G_VOID)
1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1815	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1407		1816
1408	req = SvAIO_REQ (ST (i));	1817	req = SvAIO_REQ (ST (i));
1409		1818
1410	if (req)	1819	if (req)
1411	{	1820	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	}
1423	}	1821	}
1424	}	1822	}
		1823
		1824	void
		1825	cancel_subs (aio_req_ornot req)
		1826	CODE:
		1827	req_cancel_subs (req);
1425		1828
1426	void	1829	void
1427	result (aio_req grp, ...)	1830	result (aio_req grp, ...)
1428	CODE:	1831	CODE:
1429	{	1832	{
1430	int i;	1833	int i;
		1834	AV *av;
		1835
		1836	grp->errorno = errno;
		1837
1431	AV *av = newAV ();	1838	av = newAV ();
		1839	av_extend (av, items - 1);
1432		1840
1433	for (i = 1; i < items; ++i )	1841	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1842	av_push (av, newSVsv (ST (i)));
1435		1843
1436	SvREFCNT_dec (grp->data);	1844	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1845	grp->sv1 = (SV *)av;
1438	}	1846	}
		1847
		1848	void
		1849	errno (aio_req grp, int errorno = errno)
		1850	CODE:
		1851	grp->errorno = errorno;
1439		1852
1440	void	1853	void
1441	limit (aio_req grp, int limit)	1854	limit (aio_req grp, int limit)
1442	CODE:	1855	CODE:
1443	grp->fd2 = limit;	1856	eio_grp_limit (grp, limit);
1444	aio_grp_feed (grp);
1445		1857
1446	void	1858	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1859	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1860	CODE:
1449	{	1861	{
1450	SvREFCNT_dec (grp->fh2);	1862	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1863	grp->sv2 = newSVsv (callback);
		1864	grp->feed = aio_grp_feed;
1452		1865
1453	if (grp->fd2 <= 0)	1866	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1867	grp->int2 = 2;
1455		1868
1456	aio_grp_feed (grp);	1869	eio_grp_limit (grp, grp->int2);
1457	}	1870	}
1458		1871

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