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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.215 by root, Sun Jun 17 17:07:25 2012 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
25	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
26	# include <sys/sendfile.h>	82	#include <sys/select.h>
27	# elif __freebsd	83	#include <unistd.h>
28	# include <sys/socket.h>	84	#include <utime.h>
29	# include <sys/uio.h>	85	#include <signal.h>
30	# elif __hpux	86
31	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
32	# elif __solaris /* not yet */	88
33	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
34	# else	140	# else
35	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	142	# endif
37	#endif	143	#endif
38		144
39	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	146	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		147
44	#if __ia64	148	#ifndef makedev
45	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
		150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
46	#else	215	#else
47	# define STACKSIZE 8192	216	errno = ENOSYS;
48	#endif	217	#endif
		218	}
		219
		220	/*****************************************************************************/
49		221
50	enum {	222	enum {
51	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};	224	};
63		225
64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66
67	typedef struct aio_cb
68	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
93	typedef aio_cb *aio_group;	228	typedef eio_wd aio_wd;
94		229
95	static int started, wanted;	230	static SV *on_next_submit;
96	static volatile int nreqs;	231	static int next_pri = EIO_PRI_DEFAULT;
97	static int max_outstanding = 1<<30;	232	static int max_outstanding;
98	static int respipe [2];
99		233
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	234	static s_epipe respipe;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		235
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	236	static void req_destroy (aio_req req);
105	static volatile aio_req ress, rese; /* queue start, queue end */
106
107	static void req_free (aio_req req);	237	static void req_cancel (aio_req req);
		238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
108		252
109	/* must be called at most once */	253	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
111	{	256	{
		257	if (!req->self)
		258	{
112	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
114		262
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
116	}	264	}
117		265
118	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
119	{	268	{
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
		274	{
		275	MAGIC *mg;
		276
		277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
121	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
122		283
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		285
125	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	287	}
127		288
128	static void poll_wait ()	289	static aio_wd
		290	SvAIO_WD (SV *sv)
129	{	291	{
130	if (nreqs && !ress)	292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
		301	aio_grp_feed (aio_req grp)
		302	{
		303	if (grp->sv2 && SvOK (grp->sv2))
131	{	304	{
132	fd_set rfd;	305	dSP;
133	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);
135		306
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	307	ENTER;
		308	SAVETMPS;
		309	PUSHMARK (SP);
		310	XPUSHs (req_sv (grp, aio_grp_stash));
		311	PUTBACK;
		312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		313	SPAGAIN;
		314	FREETMPS;
		315	LEAVE;
137	}	316	}
138	}	317	}
139		318
140	static void req_invoke (aio_req req)	319	static void
		320	req_submit (eio_req *req)
141	{	321	{
142	dSP;	322	eio_submit (req);
143	int errorno = errno;
144		323
145	if (req->cancelled || !SvOK (req->callback))	324	if (expect_false (on_next_submit))
146	return;
147
148	errno = req->errorno;
149
150	ENTER;
151	PUSHMARK (SP);
152
153	switch (req->type)
154	{	325	{
155	case REQ_READDIR:	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
		334	}
		335	}
		336
		337	static int
		338	req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
156	{	356	{
157	SV *rv = &PL_sv_undef;	357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	SvIOK_only (sv_result);
		360	}
		361	else
		362	{
		363	sv_result = newSViv (req->result);
		364	SvREADONLY_on (sv_result);
		365	}
158		366
159	if (req->result >= 0)	367	switch (req->type)
		368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
		373	case EIO_READDIR:
160	{	374	{
161	char *buf = req->data2ptr;	375	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		376
164	while (req->result)	377	if (req->result >= 0)
165	{	378	{
		379	int i;
		380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	382	AV *av = newAV ();
167		383
168	av_push (av, sv);	384	av_extend (av, req->result - 1);
		385
		386	for (i = 0; i < req->result; ++i)
		387	{
		388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
		412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
169	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
170	req->result--;	421	}
		422	}
		423
		424	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	425	}
172		426
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
174	}	431	}
		432	break;
175		433
		434	case EIO_OPEN:
		435	{
		436	/* convert fd to fh */
		437	SV *fh = &PL_sv_undef;
		438
		439	if (req->result >= 0)
		440	{
		441	GV *gv = (GV *)sv_newmortal ();
		442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
		448
		449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
		461	PUSHs (fh);
		462	}
		463	break;
		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
176	XPUSHs (rv);	492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		588	if (req->result > 0)
		589	SvIV_set (sv_result, 0);
		590	/* FALLTHROUGH */
		591
		592	default:
		593	PUSHs (sv_result);
		594	break;
177	}	595	}
178	break;
179		596
180	case REQ_OPEN:	597	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		598
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	599	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	601	SPAGAIN;
189		602
190	fh = SvREFCNT_inc (POPs);	603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
191		607
192	PUSHMARK (SP);	608	FREETMPS;
193	XPUSHs (sv_2mortal (fh));	609	LEAVE;
194	}
195	break;
196		610
197	case REQ_SLEEP:	611	PUTBACK;
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}	612	}
205		613
206		614	return !!SvTRUE (ERRSV);
207	PUTBACK;
208	call_sv (req->callback, G_VOID | G_EVAL);
209	SPAGAIN;
210
211	if (SvTRUE (ERRSV))
212	{
213	req_free (req);
214	croak (0);
215	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	615	}
221		616
222	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
223	{	619	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	620	if (req->self)
240	{	621	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
243	}	624	}
244		625
245	if (req->data)
246	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
253		628	SvREFCNT_dec (req->sv3);
254	if (req->statdata)	629	SvREFCNT_dec (req->sv4);
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
259		631
260	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);
262
263	Safefree (req);	632	free (req);
264	}	633	}
265		634
266	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
267	{	637	{
268	req->cancelled = 1;
269
270	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
271	{	658	{
272	aio_req sub;	659	int size;
273		660
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	661	X_LOCK (reslock);
275	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
276	}	671	}
277	}	672	}
278		673
279	static int poll_cb ()	674	static int
		675	poll_cb (void)
280	{	676	{
281	dSP;
282	int count = 0;
283	int do_croak = 0;
284	aio_req req;
285
286	for (;;)	677	for (;;)
287	{	678	{
288	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
289	req = ress;
290		680
291	if (req)	681	if (res > 0)
		682	croak (0);
		683
		684	if (!max_outstanding || max_outstanding > eio_nreqs ())
		685	return res;
		686
		687	poll_wait ();
		688	}
		689	}
		690
		691	static void ecb_cold
		692	reinit (void)
		693	{
		694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
		698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		704	# define munmap(addr,length) EIO_ENOSYS ()
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
		744
		745	static SV *
		746	get_cb (SV *cb_sv)
		747	{
		748	SvGETMAGIC (cb_sv);
		749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		750	}
		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
		772	#define dREQ \
		773	aio_req req = dreq (callback); \
		774
		775	#define REQ_SEND \
		776	PUTBACK; \
		777	req_submit (req); \
		778	SPAGAIN; \
		779	\
		780	if (GIMME_V != G_VOID) \
		781	XPUSHs (req_sv (req, aio_req_stash));
		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
292	{	792	{
293	ress = req->next;	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
294		795
295	if (!ress)	796	if (SvOK (wdob))
296	{	797	{
297	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
298	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
299	while (read (respipe [0], buf, 32) == 32)
300	;
301
302	rese = 0;
303	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
304	}	803	}
305		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
306	pthread_mutex_unlock (&reslock);
307
308	if (!req)
309	break;
310
311	nreqs--;
312
313	if (req->type == REQ_QUIT)
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{	805	{
319	if (req->type == REQ_READ)	806	*wd = (aio_wd)(long)SvIVX (rv);
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	807	*wdsv = SvREFCNT_inc_NN (rv);
321		808	*ptr = ".";
322	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	809	return; /* path set to "." */
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}
339
340	return count;
341	}
342
343	static void *aio_proc(void *arg);
344
345	static void start_thread (void)
346	{
347	sigset_t fullsigset, oldsigset;
348	pthread_t tid;
349	pthread_attr_t attr;
350
351	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354
355	sigfillset (&fullsigset);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357
358	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
359	started++;
360
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);
362	}
363
364	static void req_send (aio_req req)
365	{
366	while (started < wanted && nreqs >= started)
367	start_thread ();
368
369	nreqs++;
370
371	pthread_mutex_lock (&reqlock);
372
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}
397
398	static void end_thread (void)
399	{
400	aio_req req;
401	Newz (0, req, 1, aio_cb);
402	req->type = REQ_QUIT;
403
404	req_send (req);
405	}
406
407	static void min_parallel (int nthreads)
408	{
409	if (wanted < nthreads)
410	wanted = nthreads;
411	}
412
413	static void max_parallel (int nthreads)
414	{
415	int cur = started;
416
417	if (wanted > nthreads)
418	wanted = nthreads;
419
420	while (cur > wanted)
421	{
422	end_thread ();
423	cur--;
424	}
425
426	while (started > wanted)
427	{
428	poll_wait ();
429	poll_cb ();
430	}
431	}
432
433	static void create_pipe ()
434	{
435	if (pipe (respipe))
436	croak ("unable to initialize result pipe");
437
438	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
439	croak ("cannot set result pipe to nonblocking mode");
440
441	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
442	croak ("cannot set result pipe to nonblocking mode");
443	}
444
445	/*****************************************************************************/
446	/* work around various missing functions */
447
448	#if !HAVE_PREADWRITE
449	# define pread aio_pread
450	# define pwrite aio_pwrite
451
452	/*
453	* make our pread/pwrite safe against themselves, but not against
454	* normal read/write by using a mutex. slows down execution a lot,
455	* but that's your problem, not mine.
456	*/
457	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
458
459	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
460	{
461	ssize_t res;
462	off_t ooffset;
463
464	pthread_mutex_lock (&preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);
470
471	return res;
472	}
473
474	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
475	{
476	ssize_t res;
477	off_t ooffset;
478
479	pthread_mutex_lock (&preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);
485
486	return res;
487	}
488	#endif
489
490	#if !HAVE_FDATASYNC
491	# define fdatasync fsync
492	#endif
493
494	#if !HAVE_READAHEAD
495	# define readahead aio_readahead
496
497	static ssize_t readahead (int fd, off_t offset, size_t count)
498	{
499	char readahead_buf[4096];
500
501	while (count > 0)
502	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
504
505	pread (fd, readahead_buf, len, offset);
506	offset += len;
507	count -= len;
508	}
509
510	errno = 0;
511	}
512	#endif
513
514	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r
516
517	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
518
519	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
520	{
521	struct dirent *e;
522	int errorno;
523
524	pthread_mutex_lock (&readdirlock);
525
526	e = readdir (dirp);
527	errorno = errno;
528
529	if (e)
530	{
531	*res = ent;
532	strcpy (ent->d_name, e->d_name);
533	}
534	else
535	*res = 0;
536
537	pthread_mutex_unlock (&readdirlock);
538
539	errno = errorno;
540	return e ? 0 : -1;
541	}
542	#endif
543
544	/* sendfile always needs emulation */
545	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
546	{
547	ssize_t res;
548
549	if (!count)
550	return 0;
551
552	#if HAVE_SENDFILE
553	# if __linux
554	res = sendfile (ofd, ifd, &offset, count);
555
556	# elif __freebsd
557	/*
558	* Of course, the freebsd sendfile is a dire hack with no thoughts
559	* wasted on making it similar to other I/O functions.
560	*/
561	{
562	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564
565	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
567	res = sbytes;
568	}
569
570	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);
572
573	# elif __solaris
574	{
575	struct sendfilevec vec;
576	size_t sbytes;
577
578	vec.sfv_fd = ifd;
579	vec.sfv_flag = 0;
580	vec.sfv_off = offset;
581	vec.sfv_len = count;
582
583	res = sendfilev (ofd, &vec, 1, &sbytes);
584
585	if (res < 0 && sbytes)
586	res = sbytes;
587	}
588
589	# endif
590	#else
591	res = -1;
592	errno = ENOSYS;
593	#endif
594
595	if (res < 0
596	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
597	#if __solaris
598	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
599	#endif
600	)
601	)
602	{
603	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];
605	res = 0;
606
607	while (count)
608	{
609	ssize_t cnt;
610
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
612
613	if (cnt <= 0)
614	{
615	if (cnt && !res) res = -1;
616	break;
617	}
618
619	cnt = write (ofd, buf, cnt);
620
621	if (cnt <= 0)
622	{
623	if (cnt && !res) res = -1;
624	break;
625	}
626
627	offset += cnt;
628	res += cnt;
629	count -= cnt;
630	}
631	}
632
633	return res;
634	}
635
636	/* read a full directory */
637	static int scandir_ (const char *path, void **namesp)
638	{
639	DIR *dirp = opendir (path);
640	union
641	{
642	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;
645	struct dirent *entp;
646	char *name, *names;
647	int memlen = 4096;
648	int memofs = 0;
649	int res = 0;
650	int errorno;
651
652	if (!dirp)
653	return -1;
654
655	names = malloc (memlen);
656
657	for (;;)
658	{
659	errno = 0, readdir_r (dirp, &u.d, &entp);
660
661	if (!entp)
662	break;
663
664	name = entp->d_name;
665
666	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667	{
668	int len = strlen (name) + 1;
669
670	res++;
671
672	while (memofs + len > memlen)
673	{
674	memlen *= 2;
675	names = realloc (names, memlen);
676	if (!names)
677	break;
678	}
679
680	memcpy (names + memofs, name, len);
681	memofs += len;
682	}
683	}
684
685	errorno = errno;
686	closedir (dirp);
687
688	if (errorno)
689	{
690	free (names);
691	errno = errorno;
692	res = -1;
693	}
694
695	*namesp = (void *)names;
696	return res;
697	}
698
699	/*****************************************************************************/
700
701	static void *aio_proc (void *thr_arg)
702	{
703	aio_req req;
704	int type;
705
706	do
707	{
708	pthread_mutex_lock (&reqlock);
709
710	for (;;)
711	{
712	req = reqs;
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719
720	if (req)
721	break;
722
723	pthread_cond_wait (&reqwait, &reqlock);
724	}
725
726	pthread_mutex_unlock (&reqlock);
727
728	errno = 0; /* strictly unnecessary */
729
730	if (!req->cancelled)
731	switch (req->type)
732	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
735
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
737	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
738
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
742
743	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
744	case REQ_CLOSE: req->result = close (req->fd); break;
745	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
746	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
747	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
750
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754
755	case REQ_SLEEP:
756	{
757	struct timeval tv;
758
759	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;
761
762	req->result = select (0, 0, 0, 0, &tv);
763	}
764
765	case REQ_QUIT:
766	break;
767
768	default:
769	req->result = ENOSYS;
770	break;
771	}
772
773	req->errorno = errno;
774
775	pthread_mutex_lock (&reslock);
776
777	req->next = 0;
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}	810	}
784	else	811	else
785	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);
790	}
791
792	pthread_mutex_unlock (&reslock);
793	}	813	}
794	while (type != REQ_QUIT);
795		814
796	return 0;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
797	}	817	}
798		818
799	/*****************************************************************************/	819	static void ecb_noinline
800		820	req_set_path1 (aio_req req, SV *path)
801	static void atfork_prepare (void)
802	{	821	{
803	pthread_mutex_lock (&reqlock);	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
804	pthread_mutex_lock (&reslock);
805	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);
807	#endif
808	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);
810	#endif
811	}	823	}
812		824
813	static void atfork_parent (void)	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
814	{	827	{
815	#if !HAVE_READDIR_R	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
816	pthread_mutex_unlock (&readdirlock);
817	#endif
818	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);
820	#endif
821	pthread_mutex_unlock (&reslock);
822	pthread_mutex_unlock (&reqlock);
823	}
824		829
825	static void atfork_child (void)	830	switch (SvTYPE (rv))
826	{
827	aio_req prv;
828
829	started = 0;
830
831	while (reqs)
832	{	831	{
833	prv = reqs;	832	case SVt_PVIO:
834	reqs = prv->next;	833	case SVt_PVLV:
835	req_free (prv);	834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
836	}	844	}
837
838	reqs = reqe = 0;
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848
849	close (respipe [0]);
850	close (respipe [1]);
851	create_pipe ();
852
853	atfork_parent ();
854	}	845	}
855		846
856	#define dREQ \	847	XS(boot_IO__AIO) ecb_cold;
857	aio_req req; \
858	\
859	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \
861	\
862	Newz (0, req, 1, aio_cb); \
863	if (!req) \
864	croak ("out of memory during aio_req allocation"); \
865	\
866	req->callback = newSVsv (callback)
867		848
868	#define REQ_SEND \
869	req_send (req); \
870	\
871	if (GIMME_V != G_VOID) \
872	XPUSHs (req_sv (req, AIO_REQ_KLASS));
873
874	MODULE = IO::AIO PACKAGE = IO::AIO	849	MODULE = IO::AIO PACKAGE = IO::AIO
875		850
876	PROTOTYPES: ENABLE	851	PROTOTYPES: ENABLE
877		852
878	BOOT:	853	BOOT:
879	{	854	{
		855	static const struct {
		856	const char *name;
		857	IV iv;
		858	} *civ, const_iv[] = {
		859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
		861	# define const_eio(name) { # name, (IV) EIO_ ## name },
		862
		863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		864
		865	const_iv (ENOSYS)
		866	const_iv (EXDEV)
		867	const_iv (EBADR)
		868
		869	const_iv (O_RDONLY)
		870	const_iv (O_WRONLY)
		871	const_iv (O_RDWR)
		872	const_iv (O_CREAT)
		873	const_iv (O_TRUNC)
		874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
		876
		877	const_iv (O_ASYNC)
		878	const_iv (O_DIRECT)
		879	const_iv (O_NOATIME)
		880
		881	const_iv (O_CLOEXEC)
		882	const_iv (O_NOCTTY)
		883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
		892
		893	const_iv (S_IFIFO)
		894	const_iv (S_IFCHR)
		895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
		902
		903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		909
		910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		915
		916	const_iv (ST_RDONLY)
		917	const_iv (ST_NOSUID)
		918	const_iv (ST_NODEV)
		919	const_iv (ST_NOEXEC)
		920	const_iv (ST_SYNCHRONOUS)
		921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
		928
		929	const_iv (PROT_NONE)
		930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
		933
		934	/*const_iv (MAP_FIXED)*/
		935	const_iv (MAP_PRIVATE)
		936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
		938
		939	/* linuxish */
		940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
		945
		946	const_iv (FIEMAP_FLAG_SYNC)
		947	const_iv (FIEMAP_FLAG_XATTR)
		948	const_iv (FIEMAP_FLAGS_COMPAT)
		949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
		960
		961	const_iv (SPLICE_F_MOVE)
		962	const_iv (SPLICE_F_NONBLOCK)
		963	const_iv (SPLICE_F_MORE)
		964	const_iv (SPLICE_F_GIFT)
		965
		966	const_iv (SEEK_DATA)
		967	const_iv (SEEK_HOLE)
		968
		969	/* libeio constants */
		970	const_eio (SEEK_SET)
		971	const_eio (SEEK_CUR)
		972	const_eio (SEEK_END)
		973
		974	const_eio (MCL_FUTURE)
		975	const_eio (MCL_CURRENT)
		976
		977	const_eio (MS_ASYNC)
		978	const_eio (MS_INVALIDATE)
		979	const_eio (MS_SYNC)
		980
		981	const_eio (MT_MODIFY)
		982
		983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		984	const_eio (SYNC_FILE_RANGE_WRITE)
		985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		986
		987	const_eio (FALLOC_FL_KEEP_SIZE)
		988
		989	const_eio (READDIR_DENTS)
		990	const_eio (READDIR_DIRS_FIRST)
		991	const_eio (READDIR_STAT_ORDER)
		992	const_eio (READDIR_FOUND_UNKNOWN)
		993
		994	const_eio (DT_UNKNOWN)
		995	const_eio (DT_FIFO)
		996	const_eio (DT_CHR)
		997	const_eio (DT_DIR)
		998	const_eio (DT_BLK)
		999	const_eio (DT_REG)
		1000	const_eio (DT_LNK)
		1001	const_eio (DT_SOCK)
		1002	const_eio (DT_WHT)
		1003	};
		1004
880	HV *stash = gv_stashpv ("IO::AIO", 1);	1005	aio_stash = gv_stashpv ("IO::AIO" , 1);
881	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1006	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
882	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1007	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
883	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1008	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
884		1009
885	create_pipe ();	1010	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1011	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
887	}
888		1012
		1013	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1014
		1015	reinit ();
		1016	}
		1017
889	void	1018	void
890	min_parallel (nthreads)	1019	reinit ()
891	int nthreads	1020	PROTOTYPE:
		1021
		1022	void
		1023	max_poll_reqs (unsigned int nreqs)
892	PROTOTYPE: $	1024	PROTOTYPE: $
		1025	CODE:
		1026	eio_set_max_poll_reqs (nreqs);
893		1027
894	void	1028	void
895	max_parallel (nthreads)	1029	max_poll_time (double nseconds)
896	int nthreads
897	PROTOTYPE: $	1030	PROTOTYPE: $
898
899	int
900	max_outstanding (nreqs)
901	int nreqs
902	PROTOTYPE: $
903	CODE:	1031	CODE:
904	RETVAL = max_outstanding;	1032	eio_set_max_poll_time (nseconds);
		1033
		1034	void
		1035	min_parallel (unsigned int nthreads)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_min_parallel (nthreads);
		1039
		1040	void
		1041	max_parallel (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_parallel (nthreads);
		1045
		1046	void
		1047	max_idle (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_max_idle (nthreads);
		1051
		1052	void
		1053	idle_timeout (unsigned int seconds)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_idle_timeout (seconds);
		1057
		1058	void
		1059	max_outstanding (unsigned int maxreqs)
		1060	PROTOTYPE: $
		1061	CODE:
905	max_outstanding = nreqs;	1062	max_outstanding = maxreqs;
906		1063
907	void	1064	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1065	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
909	SV * pathname
910	int flags
911	int mode
912	SV * callback
913	PROTOTYPE: $$$;$
914	PPCODE:	1066	PPCODE:
915	{	1067	{
916	dREQ;	1068	dREQ;
917		1069
918	req->type = REQ_OPEN;	1070	req->type = EIO_WD_OPEN;
919	req->data = newSVsv (pathname);	1071	req_set_path1 (req, pathname);
920	req->dataptr = SvPVbyte_nolen (req->data);
921	req->fd = flags;
922	req->mode = mode;
923		1072
924	REQ_SEND;	1073	REQ_SEND;
925	}	1074	}
926		1075
927	void	1076	void
		1077	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_OPEN;
		1083	req_set_path1 (req, pathname);
		1084	req->int1 = flags;
		1085	req->int2 = mode;
		1086
		1087	REQ_SEND;
		1088	}
		1089
		1090	void
928	aio_close (fh,callback=&PL_sv_undef)	1091	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
929	SV * fh
930	SV * callback
931	PROTOTYPE: $;$
932	ALIAS:	1092	ALIAS:
933	aio_close = REQ_CLOSE
934	aio_fsync = REQ_FSYNC	1093	aio_fsync = EIO_FSYNC
935	aio_fdatasync = REQ_FDATASYNC	1094	aio_fdatasync = EIO_FDATASYNC
		1095	aio_syncfs = EIO_SYNCFS
936	PPCODE:	1096	PPCODE:
937	{	1097	{
		1098	int fd = s_fileno_croak (fh, 0);
938	dREQ;	1099	dREQ;
939		1100
940	req->type = ix;	1101	req->type = ix;
941	req->fh = newSVsv (fh);	1102	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1103	req->int1 = fd;
943		1104
944	REQ_SEND (req);	1105	REQ_SEND;
945	}	1106	}
946		1107
947	void	1108	void
		1109	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_SYNC_FILE_RANGE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->offs = offset;
		1119	req->size = nbytes;
		1120	req->int2 = flags;
		1121
		1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	int fd = s_fileno_croak (fh, 0);
		1130	dREQ;
		1131
		1132	req->type = EIO_FALLOCATE;
		1133	req->sv1 = newSVsv (fh);
		1134	req->int1 = fd;
		1135	req->int2 = mode;
		1136	req->offs = offset;
		1137	req->size = len;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1144	PPCODE:
		1145	{
		1146	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1147	int fd = s_fileno_croak (fh, 0);
		1148	dREQ;
		1149
		1150	if (expect_false (close_fd < 0))
		1151	{
		1152	int pipefd [2];
		1153
		1154	if (
		1155	#ifdef _WIN32
		1156	_pipe (pipefd, 1, _O_BINARY) < 0
		1157	#else
		1158	pipe (pipefd) < 0
		1159	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1160	#endif
		1161	|| close (pipefd [1]) < 0
		1162	)
		1163	abort (); /*D*/
		1164
		1165	close_fd = pipefd [0];
		1166	}
		1167
		1168	req->type = EIO_DUP2;
		1169	req->int1 = close_fd;
		1170	req->sv2 = newSVsv (fh);
		1171	req->int2 = fd;
		1172
		1173	REQ_SEND;
		1174	}
		1175
		1176	void
		1177	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1178	PPCODE:
		1179	{
		1180	int fd = s_fileno_croak (fh, 0);
		1181	dREQ;
		1182
		1183	req->type = EIO_SEEK;
		1184	req->sv1 = newSVsv (fh);
		1185	req->int1 = fd;
		1186	req->offs = SvVAL64 (offset);
		1187	req->int2 = whence;
		1188
		1189	REQ_SEND;
		1190	}
		1191
		1192	void
948	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1193	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
949	SV * fh
950	UV offset
951	UV length
952	SV * data
953	UV dataoffset
954	SV * callback
955	ALIAS:	1194	ALIAS:
956	aio_read = REQ_READ	1195	aio_read = EIO_READ
957	aio_write = REQ_WRITE	1196	aio_write = EIO_WRITE
958	PROTOTYPE: $$$$$;$
959	PPCODE:	1197	PPCODE:
960	{	1198	{
961	aio_req req;
962	STRLEN svlen;	1199	STRLEN svlen;
		1200	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
963	char *svptr = SvPVbyte (data, svlen);	1201	char *svptr = SvPVbyte (data, svlen);
964		1202	UV len = SvUV (length);
965	SvUPGRADE (data, SVt_PV);
966	SvPOK_on (data);
967		1203
968	if (dataoffset < 0)	1204	if (dataoffset < 0)
969	dataoffset += svlen;	1205	dataoffset += svlen;
970		1206
971	if (dataoffset < 0 || dataoffset > svlen)	1207	if (dataoffset < 0 || dataoffset > svlen)
972	croak ("data offset outside of string");	1208	croak ("dataoffset outside of data scalar");
973		1209
974	if (ix == REQ_WRITE)	1210	if (ix == EIO_WRITE)
975	{	1211	{
976	/* write: check length and adjust. */	1212	/* write: check length and adjust. */
977	if (length < 0 || length + dataoffset > svlen)	1213	if (!SvOK (length) || len + dataoffset > svlen)
978	length = svlen - dataoffset;	1214	len = svlen - dataoffset;
979	}	1215	}
980	else	1216	else
981	{	1217	{
982	/* read: grow scalar as necessary */	1218	/* read: check type and grow scalar as necessary */
		1219	SvUPGRADE (data, SVt_PV);
		1220	if (SvLEN (data) >= SvCUR (data))
983	svptr = SvGROW (data, length + dataoffset);	1221	svptr = SvGROW (data, len + dataoffset + 1);
		1222	else if (SvCUR (data) < len + dataoffset)
		1223	croak ("length + dataoffset outside of scalar, and cannot grow");
984	}	1224	}
985
986	if (length < 0)
987	croak ("length must not be negative");
988		1225
989	{	1226	{
990	dREQ;	1227	dREQ;
991		1228
992	req->type = ix;	1229	req->type = ix;
993	req->fh = newSVsv (fh);	1230	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1231	req->int1 = fd;
995	: IoOFP (sv_2io (fh)));	1232	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
996	req->offset = offset;	1233	req->size = len;
997	req->length = length;
998	req->data = SvREFCNT_inc (data);	1234	req->sv2 = SvREFCNT_inc (data);
999	req->dataptr = (char *)svptr + dataoffset;	1235	req->ptr2 = (char *)svptr + dataoffset;
		1236	req->stroffset = dataoffset;
1000		1237
1001	if (!SvREADONLY (data))	1238	if (!SvREADONLY (data))
1002	{	1239	{
1003	SvREADONLY_on (data);	1240	SvREADONLY_on (data);
1004	req->data2ptr = (void *)data;	1241	req->flags |= FLAG_SV2_RO_OFF;
1005	}	1242	}
1006		1243
1007	REQ_SEND;	1244	REQ_SEND;
1008	}	1245	}
1009	}	1246	}
1010		1247
1011	void	1248	void
1012	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1249	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1013	SV * out_fh	1250	ALIAS:
1014	SV * in_fh	1251	aio_readlink = EIO_READLINK
1015	UV in_offset	1252	aio_realpath = EIO_REALPATH
1016	UV length
1017	SV * callback
1018	PROTOTYPE: $$$$;$
1019	PPCODE:	1253	PPCODE:
1020	{	1254	{
		1255	dREQ;
		1256
		1257	req->type = ix;
		1258	req_set_path1 (req, pathname);
		1259
		1260	REQ_SEND;
		1261	}
		1262
		1263	void
		1264	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	int ifd = s_fileno_croak (in_fh , 0);
		1268	int ofd = s_fileno_croak (out_fh, 1);
1021	dREQ;	1269	dREQ;
1022		1270
1023	req->type = REQ_SENDFILE;	1271	req->type = EIO_SENDFILE;
1024	req->fh = newSVsv (out_fh);	1272	req->sv1 = newSVsv (out_fh);
1025	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1273	req->int1 = ofd;
1026	req->fh2 = newSVsv (in_fh);	1274	req->sv2 = newSVsv (in_fh);
1027	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1275	req->int2 = ifd;
1028	req->offset = in_offset;	1276	req->offs = in_offset;
1029	req->length = length;	1277	req->size = length;
1030		1278
1031	REQ_SEND;	1279	REQ_SEND;
1032	}	1280	}
1033		1281
1034	void	1282	void
1035	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1283	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1036	SV * fh
1037	UV offset
1038	IV length
1039	SV * callback
1040	PROTOTYPE: $$$;$
1041	PPCODE:	1284	PPCODE:
1042	{	1285	{
		1286	int fd = s_fileno_croak (fh, 0);
1043	dREQ;	1287	dREQ;
1044		1288
1045	req->type = REQ_READAHEAD;	1289	req->type = EIO_READAHEAD;
1046	req->fh = newSVsv (fh);	1290	req->sv1 = newSVsv (fh);
1047	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1291	req->int1 = fd;
1048	req->offset = offset;	1292	req->offs = offset;
1049	req->length = length;	1293	req->size = length;
1050		1294
1051	REQ_SEND;	1295	REQ_SEND;
1052	}	1296	}
1053		1297
1054	void	1298	void
1055	aio_stat (fh_or_path,callback=&PL_sv_undef)	1299	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1056	SV * fh_or_path
1057	SV * callback
1058	ALIAS:	1300	ALIAS:
1059	aio_stat = REQ_STAT	1301	aio_stat = EIO_STAT
1060	aio_lstat = REQ_LSTAT	1302	aio_lstat = EIO_LSTAT
		1303	aio_statvfs = EIO_STATVFS
1061	PPCODE:	1304	PPCODE:
1062	{	1305	{
1063	dREQ;	1306	dREQ;
1064		1307
1065	New (0, req->statdata, 1, Stat_t);	1308	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1066	if (!req->statdata)
1067	{
1068	req_free (req);
1069	croak ("out of memory during aio_req->statdata allocation");
1070	}
1071
1072	if (SvPOK (fh_or_path))
1073	{
1074	req->type = ix;
1075	req->data = newSVsv (fh_or_path);
1076	req->dataptr = SvPVbyte_nolen (req->data);
1077	}
1078	else
1079	{
1080	req->type = REQ_FSTAT;
1081	req->fh = newSVsv (fh_or_path);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1083	}
1084		1309
1085	REQ_SEND;	1310	REQ_SEND;
1086	}	1311	}
1087		1312
		1313	UV
		1314	major (UV dev)
		1315	ALIAS:
		1316	minor = 1
		1317	CODE:
		1318	RETVAL = ix ? major (dev) : minor (dev);
		1319	OUTPUT:
		1320	RETVAL
		1321
		1322	UV
		1323	makedev (UV maj, UV min)
		1324	CODE:
		1325	RETVAL = makedev (maj, min);
		1326	OUTPUT:
		1327	RETVAL
		1328
1088	void	1329	void
		1330	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1331	PPCODE:
		1332	{
		1333	dREQ;
		1334
		1335	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1336	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1337	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
		1348	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1349	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1350
		1351	REQ_SEND;
		1352	}
		1353
		1354	void
		1355	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->int2 = mode;
		1361	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
		1370	dREQ;
		1371
		1372	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1373	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1374	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1381	PPCODE:
		1382	{
		1383	dREQ;
		1384
		1385	req->type = EIO_READDIR;
		1386	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1387
		1388	if (flags & EIO_READDIR_DENTS)
		1389	req->int1 |= EIO_READDIR_CUSTOM2;
		1390
		1391	req_set_path1 (req, pathname);
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
		1397	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1398	PPCODE:
		1399	{
		1400	dREQ;
		1401
		1402	req->type = EIO_MKDIR;
		1403	req->int2 = mode;
		1404	req_set_path1 (req, pathname);
		1405
		1406	REQ_SEND;
		1407	}
		1408
		1409	void
1089	aio_unlink (pathname,callback=&PL_sv_undef)	1410	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1090	SV * pathname
1091	SV * callback
1092	ALIAS:	1411	ALIAS:
1093	aio_unlink = REQ_UNLINK	1412	aio_unlink = EIO_UNLINK
1094	aio_rmdir = REQ_RMDIR	1413	aio_rmdir = EIO_RMDIR
1095	aio_readdir = REQ_READDIR	1414	aio_readdir = EIO_READDIR
1096	PPCODE:	1415	PPCODE:
1097	{	1416	{
1098	dREQ;	1417	dREQ;
1099		1418
1100	req->type = ix;	1419	req->type = ix;
1101	req->data = newSVsv (pathname);	1420	req_set_path1 (req, pathname);
1102	req->dataptr = SvPVbyte_nolen (req->data);	1421
1103
1104	REQ_SEND;	1422	REQ_SEND;
1105	}	1423	}
1106		1424
1107	void	1425	void
1108	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1426	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1109	SV * oldpath
1110	SV * newpath
1111	SV * callback
1112	ALIAS:	1427	ALIAS:
1113	aio_link = REQ_LINK	1428	aio_link = EIO_LINK
1114	aio_symlink = REQ_SYMLINK	1429	aio_symlink = EIO_SYMLINK
1115	aio_rename = REQ_RENAME	1430	aio_rename = EIO_RENAME
1116	PPCODE:	1431	PPCODE:
1117	{	1432	{
		1433	eio_wd wd2 = 0;
1118	dREQ;	1434	dREQ;
1119		1435
1120	req->type = ix;	1436	req->type = ix;
1121	req->fh = newSVsv (oldpath);	1437	req_set_path1 (req, oldpath);
1122	req->data2ptr = SvPVbyte_nolen (req->fh);	1438	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1123	req->data = newSVsv (newpath);	1439	req->int3 = (long)wd2;
1124	req->dataptr = SvPVbyte_nolen (req->data);
1125		1440
1126	REQ_SEND;	1441	REQ_SEND;
1127	}	1442	}
1128		1443
1129	void	1444	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1445	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1131	double delay
1132	SV * callback
1133	PPCODE:	1446	PPCODE:
1134	{	1447	{
1135	dREQ;	1448	dREQ;
1136		1449
1137	req->type = REQ_SLEEP;	1450	req->type = EIO_MKNOD;
1138	req->fd = delay < 0. ? 0 : delay;	1451	req->int2 = (mode_t)mode;
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1452	req->offs = dev;
1140		1453	req_set_path1 (req, pathname);
		1454
1141	REQ_SEND;	1455	REQ_SEND;
1142	}	1456	}
1143		1457
1144	void	1458	void
1145	aio_group (callback=&PL_sv_undef)	1459	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1146	SV * callback	1460	ALIAS:
1147	PROTOTYPE: ;&	1461	aio_mtouch = EIO_MTOUCH
		1462	aio_msync = EIO_MSYNC
1148	PPCODE:	1463	PPCODE:
1149	{	1464	{
		1465	STRLEN svlen;
		1466	char *svptr = SvPVbyte (data, svlen);
		1467	UV len = SvUV (length);
		1468
		1469	if (offset < 0)
		1470	offset += svlen;
		1471
		1472	if (offset < 0 || offset > svlen)
		1473	croak ("offset outside of scalar");
		1474
		1475	if (!SvOK (length) || len + offset > svlen)
		1476	len = svlen - offset;
		1477
		1478	{
		1479	dREQ;
		1480
		1481	req->type = ix;
		1482	req->sv2 = SvREFCNT_inc (data);
		1483	req->ptr2 = (char *)svptr + offset;
		1484	req->size = len;
		1485	req->int1 = flags;
		1486
		1487	REQ_SEND;
		1488	}
		1489	}
		1490
		1491	void
		1492	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1493	PPCODE:
		1494	{
		1495	STRLEN svlen;
		1496	char *svptr = SvPVbyte (data, svlen);
		1497	UV len = SvUV (length);
		1498
		1499	if (offset < 0)
		1500	offset += svlen;
		1501
		1502	if (offset < 0 || offset > svlen)
		1503	croak ("offset outside of scalar");
		1504
		1505	if (!SvOK (length) || len + offset > svlen)
		1506	len = svlen - offset;
		1507
		1508	{
		1509	dREQ;
		1510
		1511	req->type = EIO_MLOCK;
		1512	req->sv2 = SvREFCNT_inc (data);
		1513	req->ptr2 = (char *)svptr + offset;
		1514	req->size = len;
		1515
		1516	REQ_SEND;
		1517	}
		1518	}
		1519
		1520	void
		1521	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1522	PPCODE:
		1523	{
		1524	dREQ;
		1525
		1526	req->type = EIO_MLOCKALL;
		1527	req->int1 = flags;
		1528
		1529	REQ_SEND;
		1530	}
		1531
		1532	void
		1533	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1534	PPCODE:
		1535	{
		1536	int fd = s_fileno_croak (fh, 0);
1150	dREQ;	1537	dREQ;
		1538
		1539	req->type = EIO_CUSTOM;
		1540	req->sv1 = newSVsv (fh);
		1541	req->int1 = fd;
		1542
		1543	req->feed = fiemap;
		1544	#if HAVE_FIEMAP
		1545	/* keep our fingers crossed that the next two types are 64 bit */
		1546	req->offs = start;
		1547	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1548	req->int2 = flags;
		1549	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1550	#endif
		1551
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_BUSY;
		1562	req->nv1 = delay < 0. ? 0. : delay;
		1563
		1564	REQ_SEND;
		1565	}
		1566
		1567	void
		1568	aio_group (SV *callback=&PL_sv_undef)
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
1151	req->type = REQ_GROUP;	1573	req->type = EIO_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154		1574
1155	req_send (req);	1575	req_submit (req);
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1576	XPUSHs (req_sv (req, aio_grp_stash));
1157	}	1577	}
		1578
		1579	void
		1580	aio_nop (SV *callback=&PL_sv_undef)
		1581	ALIAS:
		1582	aio_nop = EIO_NOP
		1583	aio_sync = EIO_SYNC
		1584	PPCODE:
		1585	{
		1586	dREQ;
		1587
		1588	req->type = ix;
		1589
		1590	REQ_SEND;
		1591	}
		1592
		1593	int
		1594	aioreq_pri (int pri = 0)
		1595	CODE:
		1596	RETVAL = next_pri;
		1597	if (items > 0)
		1598	{
		1599	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1600	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1601	next_pri = pri;
		1602	}
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	void
		1607	aioreq_nice (int nice = 0)
		1608	CODE:
		1609	nice = next_pri - nice;
		1610	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1611	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1612	next_pri = nice;
1158		1613
1159	void	1614	void
1160	flush ()	1615	flush ()
1161	PROTOTYPE:
1162	CODE:	1616	CODE:
1163	while (nreqs)	1617	while (eio_nreqs ())
1164	{	1618	{
1165	poll_wait ();	1619	poll_wait ();
1166	poll_cb ();	1620	poll_cb ();
1167	}	1621	}
1168		1622
1169	void	1623	int
1170	poll()	1624	poll ()
1171	PROTOTYPE:
1172	CODE:	1625	CODE:
1173	if (nreqs)
1174	{
1175	poll_wait ();	1626	poll_wait ();
1176	poll_cb ();	1627	RETVAL = poll_cb ();
1177	}
1178
1179	int
1180	poll_fileno()
1181	PROTOTYPE:
1182	CODE:
1183	RETVAL = respipe [0];
1184	OUTPUT:	1628	OUTPUT:
1185	RETVAL	1629	RETVAL
1186		1630
1187	int	1631	int
		1632	poll_fileno ()
		1633	CODE:
		1634	RETVAL = s_epipe_fd (&respipe);
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638	int
1188	poll_cb(...)	1639	poll_cb (...)
1189	PROTOTYPE:	1640	PROTOTYPE:
1190	CODE:	1641	CODE:
1191	RETVAL = poll_cb ();	1642	RETVAL = poll_cb ();
1192	OUTPUT:	1643	OUTPUT:
1193	RETVAL	1644	RETVAL
1194		1645
1195	void	1646	void
1196	poll_wait()	1647	poll_wait ()
1197	PROTOTYPE:
1198	CODE:	1648	CODE:
1199	if (nreqs)
1200	poll_wait ();	1649	poll_wait ();
1201		1650
1202	int	1651	int
1203	nreqs()	1652	nreqs ()
1204	PROTOTYPE:
1205	CODE:	1653	CODE:
1206	RETVAL = nreqs;	1654	RETVAL = eio_nreqs ();
1207	OUTPUT:	1655	OUTPUT:
1208	RETVAL	1656	RETVAL
1209		1657
		1658	int
		1659	nready ()
		1660	CODE:
		1661	RETVAL = eio_nready ();
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
		1666	npending ()
		1667	CODE:
		1668	RETVAL = eio_npending ();
		1669	OUTPUT:
		1670	RETVAL
		1671
		1672	int
		1673	nthreads ()
		1674	CODE:
		1675	RETVAL = eio_nthreads ();
		1676	OUTPUT:
		1677	RETVAL
		1678
		1679	int
		1680	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1681	CODE:
		1682	RETVAL = posix_fadvise (fh, offset, length, advice);
		1683	OUTPUT:
		1684	RETVAL
		1685
		1686	IV
		1687	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1688	CODE:
		1689	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1690	OUTPUT:
		1691	RETVAL
		1692
		1693	void
		1694	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1695	PPCODE:
		1696	sv_unmagic (scalar, MMAP_MAGIC);
		1697	{
		1698	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1699	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1700	if (addr == (void *)-1)
		1701	XSRETURN_NO;
		1702
		1703	sv_force_normal (scalar);
		1704
		1705	/* we store the length in mg_obj, as namlen is I32 :/ */
		1706	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1707	->mg_obj = (SV *)length;
		1708
		1709	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1710
		1711	if (!(prot & PROT_WRITE))
		1712	SvREADONLY_on (scalar);
		1713
		1714	if (SvLEN (scalar))
		1715	Safefree (SvPVX (scalar));
		1716
		1717	SvPVX (scalar) = (char *)addr;
		1718	SvCUR_set (scalar, length);
		1719	SvLEN_set (scalar, 0);
		1720	SvPOK_only (scalar);
		1721
		1722	XSRETURN_YES;
		1723	}
		1724
		1725	void
		1726	munmap (SV *scalar)
		1727	CODE:
		1728	sv_unmagic (scalar, MMAP_MAGIC);
		1729
		1730	int
		1731	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1732	ALIAS:
		1733	mprotect = 1
		1734	CODE:
		1735	{
		1736	STRLEN svlen;
		1737	void *addr = SvPVbyte (scalar, svlen);
		1738	size_t len = SvUV (length);
		1739
		1740	if (offset < 0)
		1741	offset += svlen;
		1742
		1743	if (offset < 0 || offset > svlen)
		1744	croak ("offset outside of scalar");
		1745
		1746	if (!SvOK (length) || len + offset > svlen)
		1747	len = svlen - offset;
		1748
		1749	addr = (void *)(((intptr_t)addr) + offset);
		1750	eio_page_align (&addr, &len);
		1751
		1752	switch (ix)
		1753	{
		1754	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1755	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1756	}
		1757	}
		1758	OUTPUT:
		1759	RETVAL
		1760
		1761	int
		1762	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1763	CODE:
		1764	{
		1765	STRLEN svlen;
		1766	void *addr = SvPVbyte (scalar, svlen);
		1767	size_t len = SvUV (length);
		1768
		1769	if (offset < 0)
		1770	offset += svlen;
		1771
		1772	if (offset < 0 || offset > svlen)
		1773	croak ("offset outside of scalar");
		1774
		1775	if (!SvOK (length) || len + offset > svlen)
		1776	len = svlen - offset;
		1777
		1778	addr = (void *)(((intptr_t)addr) + offset);
		1779	eio_page_align (&addr, &len);
		1780	#if _POSIX_MEMLOCK_RANGE
		1781	RETVAL = munlock (addr, len);
		1782	#else
		1783	RETVAL = EIO_ENOSYS ();
		1784	#endif
		1785	}
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	int
		1790	munlockall ()
		1791	CODE:
		1792	#if _POSIX_MEMLOCK
		1793	munlockall ();
		1794	#else
		1795	RETVAL = EIO_ENOSYS ();
		1796	#endif
		1797	OUTPUT:
		1798	RETVAL
		1799
		1800	int
		1801	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1802	CODE:
		1803	{
		1804	#if HAVE_LINUX_SPLICE
		1805	loff_t off_in_, off_out_;
		1806	RETVAL = splice (
		1807	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1808	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1809	length, flags
		1810	);
		1811	#else
		1812	RETVAL = EIO_ENOSYS ();
		1813	#endif
		1814	}
		1815	OUTPUT:
		1816	RETVAL
		1817
		1818	int
		1819	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1820	CODE:
		1821	#if HAVE_LINUX_SPLICE
		1822	RETVAL = tee (rfh, wfh, length, flags);
		1823	#else
		1824	RETVAL = EIO_ENOSYS ();
		1825	#endif
		1826	OUTPUT:
		1827	RETVAL
		1828
		1829	void _on_next_submit (SV *cb)
		1830	CODE:
		1831	SvREFCNT_dec (on_next_submit);
		1832	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1833
		1834	PROTOTYPES: DISABLE
		1835
		1836	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1837
		1838	BOOT:
		1839	{
		1840	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1841	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1842	}
		1843
		1844	void
		1845	DESTROY (SV *self)
		1846	CODE:
		1847	{
		1848	aio_wd wd = SvAIO_WD (self);
		1849	#if HAVE_AT
		1850	{
		1851	SV *callback = &PL_sv_undef;
		1852	dREQ; /* clobbers next_pri :/ */
		1853	next_pri = req->pri; /* restore next_pri */
		1854	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1855	req->type = EIO_WD_CLOSE;
		1856	req->wd = wd;
		1857	REQ_SEND;
		1858	}
		1859	#else
		1860	eio_wd_close_sync (wd);
		1861	#endif
		1862	}
		1863
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1864	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1865
1212	void	1866	void
1213	cancel (aio_req_ornot req)	1867	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1868	CODE:
1216	req_cancel (req);	1869	eio_cancel (req);
		1870
		1871	void
		1872	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1873	PPCODE:
		1874	{
		1875	if (GIMME_V != G_VOID)
		1876	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1877
		1878	if (items > 1)
		1879	{
		1880	SV *cb_cv =get_cb (callback);
		1881
		1882	SvREFCNT_dec (req->callback);
		1883	req->callback = SvREFCNT_inc (cb_cv);
		1884	}
		1885	}
1217		1886
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1887	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1888
1220	void	1889	void
1221	add (aio_req grp, ...)	1890	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1891	PPCODE:
1224	{	1892	{
1225	int i;	1893	int i;
		1894
		1895	if (grp->int1 == 2)
		1896	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1897
1227	for (i = 1; i < items; ++i )	1898	for (i = 1; i < items; ++i )
1228	{	1899	{
1229	aio_req req = SvAIO_REQ (ST (i));	1900	aio_req req;
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237		1901
1238	if (GIMME_V != G_VOID)	1902	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1903	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1904
		1905	req = SvAIO_REQ (ST (i));
		1906
		1907	if (req)
		1908	eio_grp_add (grp, req);
1240	}	1909	}
1241	}	1910	}
1242		1911
		1912	void
		1913	cancel_subs (aio_req_ornot req)
		1914	CODE:
		1915	req_cancel_subs (req);
		1916
		1917	void
		1918	result (aio_req grp, ...)
		1919	CODE:
		1920	{
		1921	int i;
		1922	AV *av;
		1923
		1924	grp->errorno = errno;
		1925
		1926	av = newAV ();
		1927	av_extend (av, items - 1);
		1928
		1929	for (i = 1; i < items; ++i )
		1930	av_push (av, newSVsv (ST (i)));
		1931
		1932	SvREFCNT_dec (grp->sv1);
		1933	grp->sv1 = (SV *)av;
		1934	}
		1935
		1936	void
		1937	errno (aio_req grp, int errorno = errno)
		1938	CODE:
		1939	grp->errorno = errorno;
		1940
		1941	void
		1942	limit (aio_req grp, int limit)
		1943	CODE:
		1944	eio_grp_limit (grp, limit);
		1945
		1946	void
		1947	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1948	CODE:
		1949	{
		1950	SvREFCNT_dec (grp->sv2);
		1951	grp->sv2 = newSVsv (callback);
		1952	grp->feed = aio_grp_feed;
		1953
		1954	if (grp->int2 <= 0)
		1955	grp->int2 = 2;
		1956
		1957	eio_grp_limit (grp, grp->int2);
		1958	}
		1959

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