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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.52 by root, Sun Oct 22 22:14:54 2006 UTC vs.
Revision 1.233 by root, Thu Jun 25 13:34:28 2015 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
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
31	# include <sys/socket.h>	85	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
34	# else	144	# else
35	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	146	# endif
37	#endif	147	#endif
38		148
39	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	150	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		151
44	#if __ia64	152	#ifndef makedev
45	# define STACKSIZE 65536	153	# define makedev(maj,min) (((maj) << 8) | (min))
		154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
		157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
		161
		162	#if PAGESIZE <= 0
		163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
		165
		166	/*****************************************************************************/
		167
		168	static void
		169	fiemap (eio_req *req)
		170	{
		171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags |= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		187	errno = ENOMEM;
		188	if (!fiemap)
		189	return;
		190
		191	req->ptr1 = fiemap;
		192
		193	fiemap->fm_start = req->offs;
		194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
		197
		198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		199	return;
		200
		201	if (req->int3 >= 0 /* not autosizing */
		202	|| !fiemap->fm_mapped_extents /* no more extents */
		203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		204	goto done;
		205
		206	/* else we have to loop -
		207	* it would be tempting (actually I tried that first) to just query the
		208	* number of extents needed, but linux often feels like not returning all
		209	* extents, without telling us it left any out. this complicates
		210	* this quite a bit.
		211	*/
		212
		213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		214
		215	for (;;)
		216	{
		217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		218	char scratch[3072];
		219	struct fiemap *incmap = (struct fiemap *)scratch;
		220
		221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		224	incmap->fm_flags = fiemap->fm_flags;
		225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		226
		227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		228	return;
		229
		230	if (!incmap->fm_mapped_extents)
		231	goto done;
		232
		233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		235	errno = ENOMEM;
		236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		242	{
		243	struct fiemap_extent *e = incmap->fm_extents + count;
		244
		245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
		253	}
		254	}
		255
		256	done:
		257	req->result = 0;
		258
46	#else	259	#else
47	# define STACKSIZE 8192	260	errno = ENOSYS;
48	#endif	261	#endif
		262	}
		263
		264	/*****************************************************************************/
49		265
50	enum {	266	enum {
51	REQ_QUIT,	267	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	};	268	};
63		269
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 *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
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;	270	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
93		273
94	static int started, wanted;	274	static SV *on_next_submit;
95	static volatile int nreqs;	275	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	276	static int max_outstanding;
97	static int respipe [2];
98		277
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	278	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		279
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	280	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	281	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
108		296
109	/* must be called at most once */	297	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
111	{	300	{
112	if (!req->self)	301	if (!req->self)
113	{	302	{
114	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	305	}
117		306
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	308	}
120		309
121	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
122	{	312	{
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
		318	{
		319	MAGIC *mg;
		320
		321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
124	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
125		327
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		329
128	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	331	}
130		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static SV *
		345	newmortalFH (int fd, int flags)
		346	{
		347	if (fd < 0)
		348	return &PL_sv_undef;
		349
		350	GV *gv = (GV *)sv_newmortal ();
		351	char sym[64];
		352	int symlen;
		353
		354	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		355	gv_init (gv, aio_stash, sym, symlen, 0);
		356
		357	symlen = snprintf (
		358	sym,
		359	sizeof (sym),
		360	"%s&=%d",
		361	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		362	fd
		363	);
		364
		365	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		366	? (SV *)gv : &PL_sv_undef;
		367	}
		368
		369	static void
131	static void aio_grp_feed (aio_req grp)	370	aio_grp_feed (aio_req grp)
132	{	371	{
133	while (grp->length < grp->fd2)	372	if (grp->sv2 && SvOK (grp->sv2))
134	{	373	{
135	int old_len = grp->length;	374	dSP;
136		375
137	if (grp->fh2 && SvOK (grp->fh2))	376	ENTER;
		377	SAVETMPS;
		378	PUSHMARK (SP);
		379	XPUSHs (req_sv (grp, aio_grp_stash));
		380	PUTBACK;
		381	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		382	SPAGAIN;
		383	FREETMPS;
		384	LEAVE;
		385	}
		386	}
		387
		388	static void
		389	req_submit (eio_req *req)
		390	{
		391	eio_submit (req);
		392
		393	if (expect_false (on_next_submit))
		394	{
		395	dSP;
		396	SV *cb = sv_2mortal (on_next_submit);
		397
		398	on_next_submit = 0;
		399
		400	PUSHMARK (SP);
		401	PUTBACK;
		402	call_sv (cb, G_DISCARD | G_EVAL);
		403	}
		404	}
		405
		406	static int
		407	req_invoke (eio_req *req)
		408	{
		409	if (req->flags & FLAG_SV2_RO_OFF)
		410	SvREADONLY_off (req->sv2);
		411
		412	if (!EIO_CANCELLED (req) && req->callback)
		413	{
		414	dSP;
		415	static SV *sv_result_cache; /* caches the result integer SV */
		416	SV *sv_result;
		417
		418	ENTER;
		419	SAVETMPS;
		420	PUSHMARK (SP);
		421	EXTEND (SP, 1);
		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
138	{	425	{
139	dSP;	426	sv_result = sv_result_cache; sv_result_cache = 0;
140		427	SvIV_set (sv_result, req->result);
141	ENTER;	428	SvIOK_only (sv_result);
142	SAVETMPS;
143	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;
146	call_sv (grp->fh2, G_VOID | G_EVAL);
147	SPAGAIN;
148	FREETMPS;
149	LEAVE;
150	}	429	}
151		430	else
152	/* stop if no progress has been made */
153	if (old_len == grp->length)
154	{	431	{
155	SvREFCNT_dec (grp->fh2);	432	sv_result = newSViv (req->result);
156	grp->fh2 = 0;	433	SvREADONLY_on (sv_result);
157	break;
158	}	434	}
		435
		436	switch (req->type)
		437	{
		438	case EIO_WD_OPEN:
		439	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		440	break;
		441
		442	case EIO_READDIR:
		443	{
		444	SV *rv = &PL_sv_undef;
		445
		446	if (req->result >= 0)
		447	{
		448	int i;
		449	char *names = (char *)req->ptr2;
		450	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		451	AV *av = newAV ();
		452
		453	av_extend (av, req->result - 1);
		454
		455	for (i = 0; i < req->result; ++i)
		456	{
		457	if (req->int1 & EIO_READDIR_DENTS)
		458	{
		459	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		460
		461	if (req->int1 & EIO_READDIR_CUSTOM2)
		462	{
		463	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		464	AV *avent = newAV ();
		465
		466	av_extend (avent, 2);
		467
		468	if (!sv_type [ent->type])
		469	{
		470	sv_type [ent->type] = newSViv (ent->type);
		471	SvREADONLY_on (sv_type [ent->type]);
		472	}
		473
		474	av_store (avent, 0, namesv);
		475	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		476	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		477
		478	av_store (av, i, newRV_noinc ((SV *)avent));
		479	}
		480	else
		481	av_store (av, i, namesv);
		482
		483	++ent;
		484	}
		485	else
		486	{
		487	SV *name = newSVpv (names, 0);
		488	av_store (av, i, name);
		489	names += SvCUR (name) + 1;
		490	}
		491	}
		492
		493	rv = sv_2mortal (newRV_noinc ((SV *)av));
		494	}
		495
		496	PUSHs (rv);
		497
		498	if (req->int1 & EIO_READDIR_CUSTOM1)
		499	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		500	}
		501	break;
		502
		503	case EIO_OPEN:
		504	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		505	break;
		506
		507	case EIO_STATVFS:
		508	case EIO_FSTATVFS:
		509	{
		510	SV *rv = &PL_sv_undef;
		511
		512	#ifndef _WIN32
		513	if (req->result >= 0)
		514	{
		515	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		516	HV *hv = newHV ();
		517	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		518	* chooses to make it a struct.
		519	*/
		520	unsigned long fsid = 0;
		521	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		522
		523	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		524
		525	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		526	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		527	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		528	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		529	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		530	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		531	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		532	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		533	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		534	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		535	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		536	}
		537	#endif
		538
		539	PUSHs (rv);
		540	}
		541
		542	break;
		543
		544	case EIO_GROUP:
		545	req->int1 = 2; /* mark group as finished */
		546
		547	if (req->sv1)
		548	{
		549	int i;
		550	AV *av = (AV *)req->sv1;
		551
		552	EXTEND (SP, AvFILL (av) + 1);
		553	for (i = 0; i <= AvFILL (av); ++i)
		554	PUSHs (*av_fetch (av, i, 0));
		555	}
		556	break;
		557
		558	case EIO_NOP:
		559	case EIO_BUSY:
		560	break;
		561
		562	case EIO_READLINK:
		563	case EIO_REALPATH:
		564	if (req->result > 0)
		565	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		566	break;
		567
		568	case EIO_STAT:
		569	case EIO_LSTAT:
		570	case EIO_FSTAT:
		571	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		572
		573	if (!(PL_laststatval = req->result))
		574	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		575	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		576
		577	PUSHs (sv_result);
		578	break;
		579
		580	case EIO_SEEK:
		581	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		582	break;
		583
		584	case EIO_READ:
		585	{
		586	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		587	*SvEND (req->sv2) = 0;
		588	SvPOK_only (req->sv2);
		589	SvSETMAGIC (req->sv2);
		590	PUSHs (sv_result);
		591	}
		592	break;
		593
		594	case EIO_CUSTOM:
		595	if (req->feed == fiemap)
		596	{
		597	#if HAVE_FIEMAP
		598	if (!req->result)
		599	{
		600	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		601
		602	if (fiemap->fm_extent_count)
		603	{
		604	AV *av = newAV ();
		605	int i;
		606
		607	while (fiemap->fm_mapped_extents)
		608	{
		609	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		610	AV *ext_av = newAV ();
		611
		612	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		613	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		614	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		615	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		616
		617	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		618	}
		619
		620	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		621	}
		622	else
		623	{
		624	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		625	PUSHs (sv_result);
		626	}
		627	}
		628	#endif
		629	}
		630	else
		631	PUSHs (sv_result);
		632	break;
		633
		634	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		635	if (req->result > 0)
		636	SvIV_set (sv_result, 0);
		637	/* FALLTHROUGH */
		638
		639	default:
		640	PUSHs (sv_result);
		641	break;
		642	}
		643
		644	errno = req->errorno;
		645
		646	PUTBACK;
		647	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		648	SPAGAIN;
		649
		650	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		651	SvREFCNT_dec (sv_result);
		652	else
		653	sv_result_cache = sv_result;
		654
		655	FREETMPS;
		656	LEAVE;
		657
		658	PUTBACK;
159	}	659	}
160	}
161		660
162	static void aio_grp_dec (aio_req grp)	661	return !!SvTRUE (ERRSV);
163	{
164	--grp->length;
165
166	/* call feeder, if applicable */
167	aio_grp_feed (grp);
168
169	/* finish, if done */
170	if (!grp->length && grp->fd)
171	{
172	req_invoke (grp);
173	req_free (grp);
174	}
175	}	662	}
176		663
177	static void poll_wait ()	664	static void
		665	req_destroy (aio_req req)
178	{	666	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;
182	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);
184
185	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}
187	}
188
189	static void req_invoke (aio_req req)
190	{
191	dSP;
192	int errorno = errno;
193
194	if (req->cancelled || !SvOK (req->callback))
195	return;
196
197	errno = req->errorno;
198
199	ENTER;
200	SAVETMPS;
201	PUSHMARK (SP);
202	EXTEND (SP, 1);
203
204	switch (req->type)
205	{
206	case REQ_READDIR:
207	{
208	SV *rv = &PL_sv_undef;
209
210	if (req->result >= 0)
211	{
212	char *buf = req->data2ptr;
213	AV *av = newAV ();
214
215	while (req->result)
216	{
217	SV *sv = newSVpv (buf, 0);
218
219	av_push (av, sv);
220	buf += SvCUR (sv) + 1;
221	req->result--;
222	}
223
224	rv = sv_2mortal (newRV_noinc ((SV *)av));
225	}
226
227	PUSHs (rv);
228	}
229	break;
230
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV *av = (AV *)req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID | G_EVAL);
273	SPAGAIN;
274
275	FREETMPS;
276	LEAVE;
277
278	errno = errorno;
279
280	if (SvTRUE (ERRSV))
281	{
282	req_free (req);
283	croak (0);
284	}
285	}
286
287	static void req_free (aio_req req)
288	{
289	if (req->grp)
290	{
291	aio_req grp = req->grp;
292
293	/* unlink request */
294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297	if (grp->grp_first == req)
298	grp->grp_first = req->grp_next;
299
300	aio_grp_dec (grp);
301	}
302
303	if (req->self)	667	if (req->self)
304	{	668	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	669	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	670	SvREFCNT_dec (req->self);
307	}	671	}
308		672
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	673	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	674	SvREFCNT_dec (req->sv2);
		675	SvREFCNT_dec (req->sv3);
		676	SvREFCNT_dec (req->sv4);
312	SvREFCNT_dec (req->callback);	677	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314		678
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317
318	Safefree (req);	679	free (req);
319	}	680	}
320		681
321	static void req_cancel (aio_req req)	682	static void
		683	req_cancel_subs (aio_req grp)
322	{	684	{
323	req->cancelled = 1;
324
325	if (req->type == REQ_GROUP)	685	if (grp->type != EIO_GROUP)
		686	return;
		687
		688	SvREFCNT_dec (grp->sv2);
		689	grp->sv2 = 0;
		690
		691	eio_grp_cancel (grp);
		692	}
		693
		694	static void ecb_cold
		695	create_respipe (void)
		696	{
		697	if (s_epipe_renew (&respipe))
		698	croak ("IO::AIO: unable to initialize result pipe");
		699	}
		700
		701	static void
		702	poll_wait (void)
		703	{
		704	while (eio_nreqs ())
326	{	705	{
327	aio_req sub;	706	int size;
328		707
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	708	X_LOCK (reslock);
330	req_cancel (sub);	709	size = res_queue.size;
		710	X_UNLOCK (reslock);
		711
		712	if (size)
		713	return;
		714
		715	etp_maybe_start_thread ();
		716
		717	s_epipe_wait (&respipe);
331	}	718	}
332	}	719	}
333		720
334	static int poll_cb ()	721	static int
		722	poll_cb (void)
335	{	723	{
336	dSP;
337	int count = 0;
338	int do_croak = 0;
339	aio_req req;
340
341	for (;;)	724	for (;;)
342	{	725	{
343	pthread_mutex_lock (&reslock);	726	int res = eio_poll ();
344	req = ress;
345		727
346	if (req)	728	if (res > 0)
		729	croak (0);
		730
		731	if (!max_outstanding || max_outstanding > eio_nreqs ())
		732	return res;
		733
		734	poll_wait ();
		735	}
		736	}
		737
		738	static void ecb_cold
		739	reinit (void)
		740	{
		741	create_respipe ();
		742
		743	if (eio_init (want_poll, done_poll) < 0)
		744	croak ("IO::AIO: unable to initialise eio library");
		745	}
		746
		747	/*****************************************************************************/
		748
		749	#if !_POSIX_MAPPED_FILES
		750	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		751	# define munmap(addr,length) EIO_ENOSYS ()
		752	#endif
		753
		754	#if !_POSIX_MEMORY_PROTECTION
		755	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		756	# define PROT_NONE 0
		757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
		761	#endif
		762
		763	#define MMAP_MAGIC PERL_MAGIC_ext
		764
		765	static int ecb_cold
		766	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	int old_errno = errno;
		769	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		770	errno = old_errno;
		771
		772	mg->mg_obj = 0; /* just in case */
		773
		774	SvREADONLY_off (sv);
		775
		776	if (SvPVX (sv) != mg->mg_ptr)
		777	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		778
		779	SvCUR_set (sv, 0);
		780	SvPVX (sv) = 0;
		781	SvOK_off (sv);
		782
		783	return 0;
		784	}
		785
		786	static MGVTBL mmap_vtbl = {
		787	0, 0, 0, 0, mmap_free
		788	};
		789
		790	/*****************************************************************************/
		791
		792	static SV *
		793	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	static aio_req ecb_noinline
		800	dreq (SV *callback)
		801	{
		802	SV *cb_cv;
		803	aio_req req;
		804	int req_pri = next_pri;
		805	next_pri = EIO_PRI_DEFAULT;
		806
		807	cb_cv = get_cb (callback);
		808
		809	req = calloc (sizeof (*req), 1);
		810	if (!req)
		811	croak ("out of memory during eio_req allocation");
		812
		813	req->callback = SvREFCNT_inc (cb_cv);
		814	req->pri = req_pri;
		815
		816	return req;
		817	}
		818
		819	#define dREQ \
		820	aio_req req = dreq (callback); \
		821
		822	#define REQ_SEND \
		823	PUTBACK; \
		824	req_submit (req); \
		825	SPAGAIN; \
		826	\
		827	if (GIMME_V != G_VOID) \
		828	XPUSHs (req_sv (req, aio_req_stash));
		829
		830	ecb_inline void
		831	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		832	{
		833	if (expect_false (SvROK (path)))
		834	{
		835	SV *rv = SvRV (path);
		836	SV *wdob;
		837
		838	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
347	{	839	{
348	ress = req->next;	840	path = AvARRAY (rv)[1];
		841	wdob = AvARRAY (rv)[0];
349		842
350	if (!ress)	843	if (SvOK (wdob))
351	{	844	{
352	/* read any signals sent by the worker threads */	845	*wd = SvAIO_WD (wdob);
353	char buf [32];	846	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
354	while (read (respipe [0], buf, 32) == 32)
355	;
356
357	rese = 0;
358	}	847	}
		848	else
		849	*wd = EIO_INVALID_WD;
359	}	850	}
360		851	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
361	pthread_mutex_unlock (&reslock);
362
363	if (!req)
364	break;
365
366	--nreqs;
367
368	if (req->type == REQ_QUIT)
369	started--;
370	else if (req->type == REQ_GROUP && req->length)
371	{	852	{
372	req->fd = 1; /* mark request as delayed */	853	*wd = (aio_wd)(long)SvIVX (rv);
373	continue;	854	*wdsv = SvREFCNT_inc_NN (rv);
		855	*ptr = ".";
		856	return; /* path set to "." */
374	}	857	}
375	else	858	else
376	{	859	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
377	if (req->type == REQ_READ)
378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
381	SvREADONLY_off (req->data);
382
383	if (req->statdata)
384	{
385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386	PL_laststatval = req->result;
387	PL_statcache = *(req->statdata);
388	}
389
390	req_invoke (req);
391
392	count++;
393	}
394
395	req_free (req);
396	}	860	}
397		861
398	return count;	862	*pathsv = newSVsv (path);
		863	*ptr = SvPVbyte_nolen (*pathsv);
399	}	864	}
400		865
401	static void *aio_proc(void *arg);	866	static void ecb_noinline
402		867	req_set_path1 (aio_req req, SV *path)
403	static void start_thread (void)
404	{	868	{
405	sigset_t fullsigset, oldsigset;	869	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
406	pthread_t tid;
407	pthread_attr_t attr;
408
409	pthread_attr_init (&attr);
410	pthread_attr_setstacksize (&attr, STACKSIZE);
411	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412
413	sigfillset (&fullsigset);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
417	started++;
418
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
420	}	870	}
421		871
422	static void req_send (aio_req req)	872	static void ecb_noinline
		873	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
423	{	874	{
424	while (started < wanted && nreqs >= started)	875	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
425	start_thread ();
426		876
427	++nreqs;	877	switch (SvTYPE (rv))
428
429	pthread_mutex_lock (&reqlock);
430
431	req->next = 0;
432
433	if (reqe)
434	{	878	{
435	reqe->next = req;	879	case SVt_PVIO:
436	reqe = req;	880	case SVt_PVLV:
		881	case SVt_PVGV:
		882	req->type = type_fh;
		883	req->sv1 = newSVsv (fh_or_path);
		884	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		885	break;
		886
		887	default:
		888	req->type = type_path;
		889	req_set_path1 (req, fh_or_path);
		890	break;
437	}	891	}
438	else
439	reqe = reqs = req;
440
441	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);
443
444	if (nreqs > max_outstanding)
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}	892	}
455		893
456	static void end_thread (void)	894	XS(boot_IO__AIO) ecb_cold;
457	{
458	aio_req req;
459	Newz (0, req, 1, aio_cb);
460	req->type = REQ_QUIT;
461		895
462	req_send (req);	896	MODULE = IO::AIO PACKAGE = IO::AIO
463	}
464		897
465	static void min_parallel (int nthreads)	898	PROTOTYPES: ENABLE
466	{
467	if (wanted < nthreads)
468	wanted = nthreads;
469	}
470		899
471	static void max_parallel (int nthreads)	900	BOOT:
472	{	901	{
473	int cur = started;	902	static const struct {
		903	const char *name;
		904	IV iv;
		905	} *civ, const_iv[] = {
		906	# define const_niv(name, value) { # name, (IV) value },
		907	# define const_iv(name) { # name, (IV) name },
		908	# define const_eio(name) { # name, (IV) EIO_ ## name },
474		909
475	if (wanted > nthreads)	910	/* you have to re-run ./gendef0 after adding/Removing any constants here */
476	wanted = nthreads;
477		911
478	while (cur > wanted)	912	const_iv (ENOSYS)
479	{	913	const_iv (EXDEV)
480	end_thread ();	914	const_iv (EBADR)
481	cur--;
482	}
483		915
484	while (started > wanted)	916	const_iv (O_RDONLY)
485	{	917	const_iv (O_WRONLY)
486	poll_wait ();	918	const_iv (O_RDWR)
487	poll_cb ();	919	const_iv (O_CREAT)
488	}	920	const_iv (O_TRUNC)
489	}	921	const_iv (O_EXCL)
		922	const_iv (O_APPEND)
490		923
491	static void create_pipe ()	924	const_iv (O_ASYNC)
492	{	925	const_iv (O_DIRECT)
493	if (pipe (respipe))	926	const_iv (O_NOATIME)
494	croak ("unable to initialize result pipe");
495		927
496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	928	const_iv (O_CLOEXEC)
497	croak ("cannot set result pipe to nonblocking mode");	929	const_iv (O_NOCTTY)
		930	const_iv (O_NOFOLLOW)
		931	const_iv (O_NONBLOCK)
		932	const_iv (O_EXEC)
		933	const_iv (O_SEARCH)
		934	const_iv (O_DIRECTORY)
		935	const_iv (O_DSYNC)
		936	const_iv (O_RSYNC)
		937	const_iv (O_SYNC)
		938	const_iv (O_TTY_INIT)
498		939
499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	940	const_iv (S_IFIFO)
500	croak ("cannot set result pipe to nonblocking mode");	941	const_iv (S_IFCHR)
501	}	942	const_iv (S_IFBLK)
		943	const_iv (S_IFLNK)
		944	const_iv (S_IFREG)
		945	const_iv (S_IFDIR)
		946	const_iv (S_IFWHT)
		947	const_iv (S_IFSOCK)
		948	const_iv (S_IFMT)
502		949
503	/*****************************************************************************/	950	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
504	/* work around various missing functions */	951	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		952	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		953	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		954	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		955	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
505		956
506	#if !HAVE_PREADWRITE	957	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
507	# define pread aio_pread	958	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
508	# define pwrite aio_pwrite	959	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		960	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		961	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
509		962
510	/*	963	const_iv (ST_RDONLY)
511	* make our pread/pwrite safe against themselves, but not against	964	const_iv (ST_NOSUID)
512	* normal read/write by using a mutex. slows down execution a lot,	965	const_iv (ST_NODEV)
513	* but that's your problem, not mine.	966	const_iv (ST_NOEXEC)
514	*/	967	const_iv (ST_SYNCHRONOUS)
515	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	968	const_iv (ST_MANDLOCK)
		969	const_iv (ST_WRITE)
		970	const_iv (ST_APPEND)
		971	const_iv (ST_IMMUTABLE)
		972	const_iv (ST_NOATIME)
		973	const_iv (ST_NODIRATIME)
		974	const_iv (ST_RELATIME)
516		975
517	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	976	const_iv (PROT_NONE)
518	{	977	const_iv (PROT_EXEC)
519	ssize_t res;	978	const_iv (PROT_READ)
520	off_t ooffset;	979	const_iv (PROT_WRITE)
521		980
522	pthread_mutex_lock (&preadwritelock);	981	/*const_iv (MAP_FIXED)*/
523	ooffset = lseek (fd, 0, SEEK_CUR);	982	const_iv (MAP_PRIVATE)
524	lseek (fd, offset, SEEK_SET);	983	const_iv (MAP_SHARED)
525	res = read (fd, buf, count);	984	const_iv (MAP_ANONYMOUS)
526	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);
528		985
529	return res;	986	/* linuxish */
530	}	987	const_iv (MAP_HUGETLB)
		988	const_iv (MAP_LOCKED)
		989	const_iv (MAP_NORESERVE)
		990	const_iv (MAP_POPULATE)
		991	const_iv (MAP_NONBLOCK)
531		992
532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	993	const_iv (FIEMAP_FLAG_SYNC)
533	{	994	const_iv (FIEMAP_FLAG_XATTR)
534	ssize_t res;	995	const_iv (FIEMAP_FLAGS_COMPAT)
535	off_t ooffset;	996	const_iv (FIEMAP_EXTENT_LAST)
		997	const_iv (FIEMAP_EXTENT_UNKNOWN)
		998	const_iv (FIEMAP_EXTENT_DELALLOC)
		999	const_iv (FIEMAP_EXTENT_ENCODED)
		1000	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1001	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1002	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1003	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1004	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1005	const_iv (FIEMAP_EXTENT_MERGED)
		1006	const_iv (FIEMAP_EXTENT_SHARED)
536		1007
537	pthread_mutex_lock (&preadwritelock);	1008	const_iv (SPLICE_F_MOVE)
538	ooffset = lseek (fd, 0, SEEK_CUR);	1009	const_iv (SPLICE_F_NONBLOCK)
539	lseek (fd, offset, SEEK_SET);	1010	const_iv (SPLICE_F_MORE)
540	res = write (fd, buf, count);	1011	const_iv (SPLICE_F_GIFT)
541	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);
543		1012
544	return res;	1013	const_iv (SEEK_DATA)
545	}	1014	const_iv (SEEK_HOLE)
546	#endif
547		1015
548	#if !HAVE_FDATASYNC	1016	/* libeio constants */
549	# define fdatasync fsync	1017	const_eio (SEEK_SET)
550	#endif	1018	const_eio (SEEK_CUR)
		1019	const_eio (SEEK_END)
551		1020
552	#if !HAVE_READAHEAD	1021	const_eio (MCL_FUTURE)
553	# define readahead aio_readahead	1022	const_eio (MCL_CURRENT)
554		1023
555	static ssize_t readahead (int fd, off_t offset, size_t count)	1024	const_eio (MS_ASYNC)
556	{	1025	const_eio (MS_INVALIDATE)
557	char readahead_buf[4096];	1026	const_eio (MS_SYNC)
558		1027
559	while (count > 0)	1028	const_eio (MT_MODIFY)
560	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
562		1029
563	pread (fd, readahead_buf, len, offset);	1030	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
564	offset += len;	1031	const_eio (SYNC_FILE_RANGE_WRITE)
565	count -= len;	1032	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
566	}
567		1033
568	errno = 0;	1034	const_eio (FALLOC_FL_KEEP_SIZE)
569	}	1035	const_eio (FALLOC_FL_PUNCH_HOLE)
570	#endif	1036	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1037	const_eio (FALLOC_FL_ZERO_RANGE)
571		1038
572	#if !HAVE_READDIR_R	1039	const_eio (READDIR_DENTS)
573	# define readdir_r aio_readdir_r	1040	const_eio (READDIR_DIRS_FIRST)
		1041	const_eio (READDIR_STAT_ORDER)
		1042	const_eio (READDIR_FOUND_UNKNOWN)
574		1043
575	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1044	const_eio (DT_UNKNOWN)
576		1045	const_eio (DT_FIFO)
577	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1046	const_eio (DT_CHR)
578	{	1047	const_eio (DT_DIR)
579	struct dirent *e;	1048	const_eio (DT_BLK)
580	int errorno;	1049	const_eio (DT_REG)
581		1050	const_eio (DT_LNK)
582	pthread_mutex_lock (&readdirlock);	1051	const_eio (DT_SOCK)
583		1052	const_eio (DT_WHT)
584	e = readdir (dirp);
585	errorno = errno;
586
587	if (e)
588	{
589	*res = ent;
590	strcpy (ent->d_name, e->d_name);
591	}
592	else
593	*res = 0;
594
595	pthread_mutex_unlock (&readdirlock);
596
597	errno = errorno;
598	return e ? 0 : -1;
599	}
600	#endif
601
602	/* sendfile always needs emulation */
603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
604	{
605	ssize_t res;
606
607	if (!count)
608	return 0;
609
610	#if HAVE_SENDFILE
611	# if __linux
612	res = sendfile (ofd, ifd, &offset, count);
613
614	# elif __freebsd
615	/*
616	* Of course, the freebsd sendfile is a dire hack with no thoughts
617	* wasted on making it similar to other I/O functions.
618	*/
619	{
620	off_t sbytes;
621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
622
623	if (res < 0 && sbytes)
624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
625	res = sbytes;
626	}	1053	};
627		1054
628	# elif __hpux	1055	aio_stash = gv_stashpv ("IO::AIO" , 1);
629	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1057	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1058	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
630		1059
631	# elif __solaris	1060	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
632	{	1061	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
633	struct sendfilevec vec;
634	size_t sbytes;
635		1062
636	vec.sfv_fd = ifd;	1063	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
637	vec.sfv_flag = 0;
638	vec.sfv_off = offset;
639	vec.sfv_len = count;
640		1064
641	res = sendfilev (ofd, &vec, 1, &sbytes);	1065	reinit ();
		1066	}
642		1067
643	if (res < 0 && sbytes)	1068	void
		1069	reinit ()
		1070	PROTOTYPE:
		1071
		1072	void
		1073	max_poll_reqs (unsigned int nreqs)
		1074	PROTOTYPE: $
		1075	CODE:
		1076	eio_set_max_poll_reqs (nreqs);
		1077
		1078	void
		1079	max_poll_time (double nseconds)
		1080	PROTOTYPE: $
		1081	CODE:
		1082	eio_set_max_poll_time (nseconds);
		1083
		1084	void
		1085	min_parallel (unsigned int nthreads)
		1086	PROTOTYPE: $
		1087	CODE:
		1088	eio_set_min_parallel (nthreads);
		1089
		1090	void
		1091	max_parallel (unsigned int nthreads)
		1092	PROTOTYPE: $
		1093	CODE:
		1094	eio_set_max_parallel (nthreads);
		1095
		1096	void
		1097	max_idle (unsigned int nthreads)
		1098	PROTOTYPE: $
		1099	CODE:
		1100	eio_set_max_idle (nthreads);
		1101
		1102	void
		1103	idle_timeout (unsigned int seconds)
		1104	PROTOTYPE: $
		1105	CODE:
		1106	eio_set_idle_timeout (seconds);
		1107
		1108	void
		1109	max_outstanding (unsigned int maxreqs)
		1110	PROTOTYPE: $
		1111	CODE:
		1112	max_outstanding = maxreqs;
		1113
		1114	void
		1115	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1116	PPCODE:
		1117	{
		1118	dREQ;
		1119
		1120	req->type = EIO_WD_OPEN;
		1121	req_set_path1 (req, pathname);
		1122
		1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
		1132	req->type = EIO_OPEN;
		1133	req_set_path1 (req, pathname);
		1134	req->int1 = flags;
		1135	req->int2 = mode;
		1136
		1137	REQ_SEND;
		1138	}
		1139
		1140	void
		1141	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1142	ALIAS:
		1143	aio_fsync = EIO_FSYNC
		1144	aio_fdatasync = EIO_FDATASYNC
		1145	aio_syncfs = EIO_SYNCFS
		1146	PPCODE:
		1147	{
		1148	int fd = s_fileno_croak (fh, 0);
		1149	dREQ;
		1150
		1151	req->type = ix;
		1152	req->sv1 = newSVsv (fh);
		1153	req->int1 = fd;
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_SYNC_FILE_RANGE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->offs = offset;
644	res = sbytes;	1169	req->size = nbytes;
645	}	1170	req->int2 = flags;
646		1171
647	# endif	1172	REQ_SEND;
		1173	}
		1174
		1175	void
		1176	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	int fd = s_fileno_croak (fh, 0);
		1180	dREQ;
		1181
		1182	req->type = EIO_FALLOCATE;
		1183	req->sv1 = newSVsv (fh);
		1184	req->int1 = fd;
		1185	req->int2 = mode;
		1186	req->offs = offset;
		1187	req->size = len;
		1188
		1189	REQ_SEND;
		1190	}
		1191
		1192	void
		1193	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1194	PPCODE:
		1195	{
		1196	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1197	int fd = s_fileno_croak (fh, 0);
		1198	dREQ;
		1199
		1200	if (expect_false (close_fd < 0))
		1201	{
		1202	int pipefd [2];
		1203
		1204	if (
		1205	#ifdef _WIN32
		1206	_pipe (pipefd, 1, _O_BINARY) < 0
648	#else	1207	#else
649	res = -1;	1208	pipe (pipefd) < 0
650	errno = ENOSYS;	1209	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
651	#endif	1210	#endif
652		1211	|| close (pipefd [1]) < 0
653	if (res < 0
654	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
655	#if __solaris
656	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
657	#endif
658	)
659	)
660	{
661	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];
663	res = 0;
664
665	while (count)
666	{
667	ssize_t cnt;
668
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670
671	if (cnt <= 0)
672	{	1212	)
673	if (cnt && !res) res = -1;	1213	abort (); /*D*/
674	break;
675	}
676		1214
677	cnt = write (ofd, buf, cnt);	1215	close_fd = pipefd [0];
678
679	if (cnt <= 0)
680	{
681	if (cnt && !res) res = -1;
682	break;
683	}
684
685	offset += cnt;
686	res += cnt;
687	count -= cnt;
688	}
689	}
690
691	return res;
692	}
693
694	/* read a full directory */
695	static int scandir_ (const char *path, void **namesp)
696	{
697	DIR *dirp = opendir (path);
698	union
699	{
700	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;
703	struct dirent *entp;
704	char *name, *names;
705	int memlen = 4096;
706	int memofs = 0;
707	int res = 0;
708	int errorno;
709
710	if (!dirp)
711	return -1;
712
713	names = malloc (memlen);
714
715	for (;;)
716	{
717	errno = 0, readdir_r (dirp, &u.d, &entp);
718
719	if (!entp)
720	break;
721
722	name = entp->d_name;
723
724	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725	{
726	int len = strlen (name) + 1;
727
728	res++;
729
730	while (memofs + len > memlen)
731	{
732	memlen *= 2;
733	names = realloc (names, memlen);
734	if (!names)
735	break;
736	}
737
738	memcpy (names + memofs, name, len);
739	memofs += len;
740	}
741	}
742
743	errorno = errno;
744	closedir (dirp);
745
746	if (errorno)
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752
753	*namesp = (void *)names;
754	return res;
755	}
756
757	/*****************************************************************************/
758
759	static void *aio_proc (void *thr_arg)
760	{
761	aio_req req;
762	int type;
763
764	do
765	{
766	pthread_mutex_lock (&reqlock);
767
768	for (;;)
769	{
770	req = reqs;
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777
778	if (req)
779	break;
780
781	pthread_cond_wait (&reqwait, &reqlock);
782	}
783
784	pthread_mutex_unlock (&reqlock);
785
786	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */
790	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
796
797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800
801	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
802	case REQ_CLOSE: req->result = close (req->fd); break;
803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812
813	case REQ_SLEEP:
814	{
815	struct timeval tv;
816
817	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;
819
820	req->result = select (0, 0, 0, 0, &tv);
821	}
822
823	case REQ_QUIT:
824	break;
825
826	default:
827	req->result = ENOSYS;
828	break;
829	}	1216	}
830		1217
831	req->errorno = errno;	1218	req->type = EIO_DUP2;
832		1219	req->int1 = close_fd;
833	pthread_mutex_lock (&reslock);	1220	req->sv2 = newSVsv (fh);
834
835	req->next = 0;	1221	req->int2 = fd;
836		1222
837	if (rese)	1223	REQ_SEND;
838	{
839	rese->next = req;
840	rese = req;
841	}
842	else
843	{
844	rese = ress = req;
845
846	/* write a dummy byte to the pipe so fh becomes ready */
847	write (respipe [1], &respipe, 1);
848	}
849
850	pthread_mutex_unlock (&reslock);
851	}
852	while (type != REQ_QUIT);
853
854	return 0;
855	}	1224	}
856		1225
857	/*****************************************************************************/
858
859	static void atfork_prepare (void)
860	{
861	pthread_mutex_lock (&reqlock);
862	pthread_mutex_lock (&reslock);
863	#if !HAVE_PREADWRITE
864	pthread_mutex_lock (&preadwritelock);
865	#endif
866	#if !HAVE_READDIR_R
867	pthread_mutex_lock (&readdirlock);
868	#endif
869	}
870
871	static void atfork_parent (void)
872	{
873	#if !HAVE_READDIR_R
874	pthread_mutex_unlock (&readdirlock);
875	#endif
876	#if !HAVE_PREADWRITE
877	pthread_mutex_unlock (&preadwritelock);
878	#endif
879	pthread_mutex_unlock (&reslock);
880	pthread_mutex_unlock (&reqlock);
881	}
882
883	static void atfork_child (void)
884	{
885	aio_req prv;
886
887	started = 0;
888
889	while (reqs)
890	{
891	prv = reqs;
892	reqs = prv->next;
893	req_free (prv);
894	}
895
896	reqs = reqe = 0;
897
898	while (ress)
899	{
900	prv = ress;
901	ress = prv->next;
902	req_free (prv);
903	}
904
905	ress = rese = 0;
906
907	close (respipe [0]);
908	close (respipe [1]);
909	create_pipe ();
910
911	atfork_parent ();
912	}
913
914	#define dREQ \
915	aio_req req; \
916	\
917	if (SvOK (callback) && !SvROK (callback)) \
918	croak ("callback must be undef or of reference type"); \
919	\
920	Newz (0, req, 1, aio_cb); \
921	if (!req) \
922	croak ("out of memory during aio_req allocation"); \
923	\
924	req->callback = newSVsv (callback)
925
926	#define REQ_SEND \
927	req_send (req); \
928	\
929	if (GIMME_V != G_VOID) \
930	XPUSHs (req_sv (req, AIO_REQ_KLASS));
931
932	MODULE = IO::AIO PACKAGE = IO::AIO
933
934	PROTOTYPES: ENABLE
935
936	BOOT:
937	{
938	HV *stash = gv_stashpv ("IO::AIO", 1);
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
941	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
942
943	create_pipe ();
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945	}
946
947	void	1226	void
948	min_parallel (nthreads)	1227	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
949	int nthreads
950	PROTOTYPE: $
951
952	void
953	max_parallel (nthreads)
954	int nthreads
955	PROTOTYPE: $
956
957	int
958	max_outstanding (nreqs)
959	int nreqs
960	PROTOTYPE: $
961	CODE:	1228	PPCODE:
962	RETVAL = max_outstanding;
963	max_outstanding = nreqs;
964
965	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
967	SV * pathname
968	int flags
969	int mode
970	SV * callback
971	PROTOTYPE: $$$;$
972	PPCODE:
973	{	1229	{
		1230	int fd = s_fileno_croak (fh, 0);
974	dREQ;	1231	dREQ;
975		1232
976	req->type = REQ_OPEN;	1233	req->type = EIO_SEEK;
977	req->data = newSVsv (pathname);	1234	req->sv1 = newSVsv (fh);
978	req->dataptr = SvPVbyte_nolen (req->data);	1235	req->int1 = fd;
979	req->fd = flags;	1236	req->offs = SvVAL64 (offset);
980	req->mode = mode;	1237	req->int2 = whence;
981		1238
982	REQ_SEND;	1239	REQ_SEND;
983	}	1240	}
984		1241
985	void	1242	void
986	aio_close (fh,callback=&PL_sv_undef)	1243	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
987	SV * fh
988	SV * callback
989	PROTOTYPE: $;$
990	ALIAS:	1244	ALIAS:
991	aio_close = REQ_CLOSE
992	aio_fsync = REQ_FSYNC
993	aio_fdatasync = REQ_FDATASYNC
994	PPCODE:
995	{
996	dREQ;
997
998	req->type = ix;
999	req->fh = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1001
1002	REQ_SEND (req);
1003	}
1004
1005	void
1006	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1007	SV * fh
1008	UV offset
1009	UV length
1010	SV * data
1011	UV dataoffset
1012	SV * callback
1013	ALIAS:
1014	aio_read = REQ_READ	1245	aio_read = EIO_READ
1015	aio_write = REQ_WRITE	1246	aio_write = EIO_WRITE
1016	PROTOTYPE: $$$$$;$
1017	PPCODE:	1247	PPCODE:
1018	{	1248	{
1019	aio_req req;
1020	STRLEN svlen;	1249	STRLEN svlen;
		1250	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1021	char *svptr = SvPVbyte (data, svlen);	1251	char *svptr = SvPVbyte (data, svlen);
1022		1252	UV len = SvUV (length);
1023	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);
1025		1253
1026	if (dataoffset < 0)	1254	if (dataoffset < 0)
1027	dataoffset += svlen;	1255	dataoffset += svlen;
1028		1256
1029	if (dataoffset < 0 || dataoffset > svlen)	1257	if (dataoffset < 0 || dataoffset > svlen)
1030	croak ("data offset outside of string");	1258	croak ("dataoffset outside of data scalar");
1031		1259
1032	if (ix == REQ_WRITE)	1260	if (ix == EIO_WRITE)
1033	{	1261	{
1034	/* write: check length and adjust. */	1262	/* write: check length and adjust. */
1035	if (length < 0 || length + dataoffset > svlen)	1263	if (!SvOK (length) || len + dataoffset > svlen)
1036	length = svlen - dataoffset;	1264	len = svlen - dataoffset;
1037	}	1265	}
1038	else	1266	else
1039	{	1267	{
1040	/* read: grow scalar as necessary */	1268	/* read: check type and grow scalar as necessary */
		1269	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1041	svptr = SvGROW (data, length + dataoffset);	1270	svptr = sv_grow (data, len + dataoffset + 1);
		1271	else if (SvCUR (data) < len + dataoffset)
		1272	croak ("length + dataoffset outside of scalar, and cannot grow");
1042	}	1273	}
1043
1044	if (length < 0)
1045	croak ("length must not be negative");
1046		1274
1047	{	1275	{
1048	dREQ;	1276	dREQ;
1049		1277
1050	req->type = ix;	1278	req->type = ix;
1051	req->fh = newSVsv (fh);	1279	req->sv1 = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1280	req->int1 = fd;
1053	: IoOFP (sv_2io (fh)));	1281	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054	req->offset = offset;	1282	req->size = len;
1055	req->length = length;
1056	req->data = SvREFCNT_inc (data);	1283	req->sv2 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	1284	req->ptr2 = (char *)svptr + dataoffset;
		1285	req->stroffset = dataoffset;
1058		1286
1059	if (!SvREADONLY (data))	1287	if (!SvREADONLY (data))
1060	{	1288	{
1061	SvREADONLY_on (data);	1289	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	1290	req->flags |= FLAG_SV2_RO_OFF;
1063	}	1291	}
1064		1292
1065	REQ_SEND;	1293	REQ_SEND;
1066	}	1294	}
1067	}	1295	}
1068		1296
1069	void	1297	void
1070	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1298	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1071	SV * out_fh	1299	ALIAS:
1072	SV * in_fh	1300	aio_readlink = EIO_READLINK
1073	UV in_offset	1301	aio_realpath = EIO_REALPATH
1074	UV length
1075	SV * callback
1076	PROTOTYPE: $$$$;$
1077	PPCODE:	1302	PPCODE:
1078	{	1303	{
		1304	dREQ;
		1305
		1306	req->type = ix;
		1307	req_set_path1 (req, pathname);
		1308
		1309	REQ_SEND;
		1310	}
		1311
		1312	void
		1313	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1314	PPCODE:
		1315	{
		1316	int ifd = s_fileno_croak (in_fh , 0);
		1317	int ofd = s_fileno_croak (out_fh, 1);
1079	dREQ;	1318	dREQ;
1080		1319
1081	req->type = REQ_SENDFILE;	1320	req->type = EIO_SENDFILE;
1082	req->fh = newSVsv (out_fh);	1321	req->sv1 = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1322	req->int1 = ofd;
1084	req->fh2 = newSVsv (in_fh);	1323	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1324	req->int2 = ifd;
1086	req->offset = in_offset;	1325	req->offs = in_offset;
1087	req->length = length;	1326	req->size = length;
1088		1327
1089	REQ_SEND;	1328	REQ_SEND;
1090	}	1329	}
1091		1330
1092	void	1331	void
1093	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1332	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1094	SV * fh
1095	UV offset
1096	IV length
1097	SV * callback
1098	PROTOTYPE: $$$;$
1099	PPCODE:	1333	PPCODE:
1100	{	1334	{
		1335	int fd = s_fileno_croak (fh, 0);
1101	dREQ;	1336	dREQ;
1102		1337
1103	req->type = REQ_READAHEAD;	1338	req->type = EIO_READAHEAD;
1104	req->fh = newSVsv (fh);	1339	req->sv1 = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1340	req->int1 = fd;
1106	req->offset = offset;	1341	req->offs = offset;
1107	req->length = length;	1342	req->size = length;
1108		1343
1109	REQ_SEND;	1344	REQ_SEND;
1110	}	1345	}
1111		1346
1112	void	1347	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	1348	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1114	SV * fh_or_path
1115	SV * callback
1116	ALIAS:	1349	ALIAS:
1117	aio_stat = REQ_STAT	1350	aio_stat = EIO_STAT
1118	aio_lstat = REQ_LSTAT	1351	aio_lstat = EIO_LSTAT
		1352	aio_statvfs = EIO_STATVFS
1119	PPCODE:	1353	PPCODE:
1120	{	1354	{
1121	dREQ;	1355	dREQ;
1122		1356
1123	New (0, req->statdata, 1, Stat_t);	1357	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1124	if (!req->statdata)
1125	{
1126	req_free (req);
1127	croak ("out of memory during aio_req->statdata allocation");
1128	}
1129
1130	if (SvPOK (fh_or_path))
1131	{
1132	req->type = ix;
1133	req->data = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);
1135	}
1136	else
1137	{
1138	req->type = REQ_FSTAT;
1139	req->fh = newSVsv (fh_or_path);
1140	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}
1142		1358
1143	REQ_SEND;	1359	REQ_SEND;
1144	}	1360	}
1145		1361
		1362	UV
		1363	major (UV dev)
		1364	ALIAS:
		1365	minor = 1
		1366	CODE:
		1367	RETVAL = ix ? major (dev) : minor (dev);
		1368	OUTPUT:
		1369	RETVAL
		1370
		1371	UV
		1372	makedev (UV maj, UV min)
		1373	CODE:
		1374	RETVAL = makedev (maj, min);
		1375	OUTPUT:
		1376	RETVAL
		1377
1146	void	1378	void
		1379	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1380	PPCODE:
		1381	{
		1382	dREQ;
		1383
		1384	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1385	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1386	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1387
		1388	REQ_SEND;
		1389	}
		1390
		1391	void
		1392	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1393	PPCODE:
		1394	{
		1395	dREQ;
		1396
		1397	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1398	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1399
		1400	REQ_SEND;
		1401	}
		1402
		1403	void
		1404	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1405	PPCODE:
		1406	{
		1407	dREQ;
		1408
		1409	req->int2 = mode;
		1410	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1411
		1412	REQ_SEND;
		1413	}
		1414
		1415	void
		1416	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1417	PPCODE:
		1418	{
		1419	dREQ;
		1420
		1421	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1422	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1423	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1424
		1425	REQ_SEND;
		1426	}
		1427
		1428	void
		1429	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1430	PPCODE:
		1431	{
		1432	dREQ;
		1433
		1434	req->type = EIO_READDIR;
		1435	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1436
		1437	if (flags & EIO_READDIR_DENTS)
		1438	req->int1 |= EIO_READDIR_CUSTOM2;
		1439
		1440	req_set_path1 (req, pathname);
		1441
		1442	REQ_SEND;
		1443	}
		1444
		1445	void
		1446	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	dREQ;
		1450
		1451	req->type = EIO_MKDIR;
		1452	req->int2 = mode;
		1453	req_set_path1 (req, pathname);
		1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
1147	aio_unlink (pathname,callback=&PL_sv_undef)	1459	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1148	SV * pathname
1149	SV * callback
1150	ALIAS:	1460	ALIAS:
1151	aio_unlink = REQ_UNLINK	1461	aio_unlink = EIO_UNLINK
1152	aio_rmdir = REQ_RMDIR	1462	aio_rmdir = EIO_RMDIR
1153	aio_readdir = REQ_READDIR	1463	aio_readdir = EIO_READDIR
1154	PPCODE:	1464	PPCODE:
1155	{	1465	{
1156	dREQ;	1466	dREQ;
1157		1467
1158	req->type = ix;	1468	req->type = ix;
1159	req->data = newSVsv (pathname);	1469	req_set_path1 (req, pathname);
1160	req->dataptr = SvPVbyte_nolen (req->data);	1470
1161
1162	REQ_SEND;	1471	REQ_SEND;
1163	}	1472	}
1164		1473
1165	void	1474	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1475	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1167	SV * oldpath
1168	SV * newpath
1169	SV * callback
1170	ALIAS:	1476	ALIAS:
1171	aio_link = REQ_LINK	1477	aio_link = EIO_LINK
1172	aio_symlink = REQ_SYMLINK	1478	aio_symlink = EIO_SYMLINK
1173	aio_rename = REQ_RENAME	1479	aio_rename = EIO_RENAME
1174	PPCODE:	1480	PPCODE:
1175	{	1481	{
		1482	eio_wd wd2 = 0;
1176	dREQ;	1483	dREQ;
1177		1484
1178	req->type = ix;	1485	req->type = ix;
1179	req->fh = newSVsv (oldpath);	1486	req_set_path1 (req, oldpath);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	1487	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1181	req->data = newSVsv (newpath);	1488	req->int3 = (long)wd2;
1182	req->dataptr = SvPVbyte_nolen (req->data);
1183		1489
1184	REQ_SEND;	1490	REQ_SEND;
1185	}	1491	}
1186		1492
1187	void	1493	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	1494	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1189	double delay
1190	SV * callback
1191	PPCODE:	1495	PPCODE:
1192	{	1496	{
1193	dREQ;	1497	dREQ;
1194		1498
1195	req->type = REQ_SLEEP;	1499	req->type = EIO_MKNOD;
1196	req->fd = delay < 0. ? 0 : delay;	1500	req->int2 = (mode_t)mode;
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1501	req->offs = dev;
1198		1502	req_set_path1 (req, pathname);
		1503
1199	REQ_SEND;	1504	REQ_SEND;
1200	}	1505	}
1201		1506
1202	void	1507	void
1203	aio_group (callback=&PL_sv_undef)	1508	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1204	SV * callback	1509	ALIAS:
1205	PROTOTYPE: ;$	1510	aio_mtouch = EIO_MTOUCH
		1511	aio_msync = EIO_MSYNC
1206	PPCODE:	1512	PPCODE:
1207	{	1513	{
		1514	STRLEN svlen;
		1515	char *svptr = SvPVbyte (data, svlen);
		1516	UV len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 || offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) || len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	{
		1528	dREQ;
		1529
		1530	req->type = ix;
		1531	req->sv2 = SvREFCNT_inc (data);
		1532	req->ptr2 = (char *)svptr + offset;
		1533	req->size = len;
		1534	req->int1 = flags;
		1535
		1536	REQ_SEND;
		1537	}
		1538	}
		1539
		1540	void
		1541	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	STRLEN svlen;
		1545	char *svptr = SvPVbyte (data, svlen);
		1546	UV len = SvUV (length);
		1547
		1548	if (offset < 0)
		1549	offset += svlen;
		1550
		1551	if (offset < 0 || offset > svlen)
		1552	croak ("offset outside of scalar");
		1553
		1554	if (!SvOK (length) || len + offset > svlen)
		1555	len = svlen - offset;
		1556
		1557	{
		1558	dREQ;
		1559
		1560	req->type = EIO_MLOCK;
		1561	req->sv2 = SvREFCNT_inc (data);
		1562	req->ptr2 = (char *)svptr + offset;
		1563	req->size = len;
		1564
		1565	REQ_SEND;
		1566	}
		1567	}
		1568
		1569	void
		1570	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1571	PPCODE:
		1572	{
		1573	dREQ;
		1574
		1575	req->type = EIO_MLOCKALL;
		1576	req->int1 = flags;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	void
		1582	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1583	PPCODE:
		1584	{
		1585	int fd = s_fileno_croak (fh, 0);
1208	dREQ;	1586	dREQ;
		1587
		1588	req->type = EIO_CUSTOM;
		1589	req->sv1 = newSVsv (fh);
		1590	req->int1 = fd;
		1591
		1592	req->feed = fiemap;
		1593	#if HAVE_FIEMAP
		1594	/* keep our fingers crossed that the next two types are 64 bit */
		1595	req->offs = start;
		1596	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1597	req->int2 = flags;
		1598	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1599	#endif
		1600
		1601	REQ_SEND;
		1602	}
		1603
		1604	void
		1605	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1606	PPCODE:
		1607	{
		1608	dREQ;
		1609
		1610	req->type = EIO_BUSY;
		1611	req->nv1 = delay < 0. ? 0. : delay;
		1612
		1613	REQ_SEND;
		1614	}
		1615
		1616	void
		1617	aio_group (SV *callback = &PL_sv_undef)
		1618	PPCODE:
		1619	{
		1620	dREQ;
		1621
1209	req->type = REQ_GROUP;	1622	req->type = EIO_GROUP;
		1623
		1624	PUTBACK;
1210	req_send (req);	1625	req_submit (req);
		1626	SPAGAIN;
		1627
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1628	XPUSHs (req_sv (req, aio_grp_stash));
1212	}	1629	}
		1630
		1631	void
		1632	aio_nop (SV *callback = &PL_sv_undef)
		1633	ALIAS:
		1634	aio_nop = EIO_NOP
		1635	aio_sync = EIO_SYNC
		1636	PPCODE:
		1637	{
		1638	dREQ;
		1639
		1640	req->type = ix;
		1641
		1642	REQ_SEND;
		1643	}
		1644
		1645	int
		1646	aioreq_pri (int pri = NO_INIT)
		1647	CODE:
		1648	RETVAL = next_pri;
		1649	if (items > 0)
		1650	{
		1651	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1652	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1653	next_pri = pri;
		1654	}
		1655	OUTPUT:
		1656	RETVAL
		1657
		1658	void
		1659	aioreq_nice (int nice = 0)
		1660	CODE:
		1661	nice = next_pri - nice;
		1662	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1663	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1664	next_pri = nice;
1213		1665
1214	void	1666	void
1215	flush ()	1667	flush ()
1216	PROTOTYPE:
1217	CODE:	1668	CODE:
1218	while (nreqs)	1669	while (eio_nreqs ())
1219	{	1670	{
1220	poll_wait ();	1671	poll_wait ();
1221	poll_cb ();	1672	poll_cb ();
1222	}	1673	}
1223		1674
1224	void	1675	int
1225	poll()	1676	poll ()
1226	PROTOTYPE:
1227	CODE:	1677	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();	1678	poll_wait ();
1231	poll_cb ();	1679	RETVAL = poll_cb ();
1232	}
1233
1234	int
1235	poll_fileno()
1236	PROTOTYPE:
1237	CODE:
1238	RETVAL = respipe [0];
1239	OUTPUT:	1680	OUTPUT:
1240	RETVAL	1681	RETVAL
1241		1682
1242	int	1683	int
		1684	poll_fileno ()
		1685	CODE:
		1686	RETVAL = s_epipe_fd (&respipe);
		1687	OUTPUT:
		1688	RETVAL
		1689
		1690	int
1243	poll_cb(...)	1691	poll_cb (...)
1244	PROTOTYPE:	1692	PROTOTYPE:
1245	CODE:	1693	CODE:
1246	RETVAL = poll_cb ();	1694	RETVAL = poll_cb ();
1247	OUTPUT:	1695	OUTPUT:
1248	RETVAL	1696	RETVAL
1249		1697
1250	void	1698	void
1251	poll_wait()	1699	poll_wait ()
1252	PROTOTYPE:
1253	CODE:	1700	CODE:
1254	if (nreqs)
1255	poll_wait ();	1701	poll_wait ();
1256		1702
1257	int	1703	int
1258	nreqs()	1704	nreqs ()
1259	PROTOTYPE:
1260	CODE:	1705	CODE:
1261	RETVAL = nreqs;	1706	RETVAL = eio_nreqs ();
1262	OUTPUT:	1707	OUTPUT:
1263	RETVAL	1708	RETVAL
1264		1709
		1710	int
		1711	nready ()
		1712	CODE:
		1713	RETVAL = eio_nready ();
		1714	OUTPUT:
		1715	RETVAL
		1716
		1717	int
		1718	npending ()
		1719	CODE:
		1720	RETVAL = eio_npending ();
		1721	OUTPUT:
		1722	RETVAL
		1723
		1724	int
		1725	nthreads ()
		1726	CODE:
		1727	RETVAL = eio_nthreads ();
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1733	CODE:
		1734	RETVAL = posix_fadvise (fh, offset, length, advice);
		1735	OUTPUT:
		1736	RETVAL
		1737
		1738	IV
		1739	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1740	CODE:
		1741	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void
		1746	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1747	PPCODE:
		1748	sv_unmagic (scalar, MMAP_MAGIC);
		1749	{
		1750	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1751	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1752	if (addr == (void *)-1)
		1753	XSRETURN_NO;
		1754
		1755	sv_force_normal (scalar);
		1756
		1757	/* we store the length in mg_obj, as namlen is I32 :/ */
		1758	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1759	->mg_obj = (SV *)length;
		1760
		1761	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1762
		1763	if (!(prot & PROT_WRITE))
		1764	SvREADONLY_on (scalar);
		1765
		1766	if (SvLEN (scalar))
		1767	Safefree (SvPVX (scalar));
		1768
		1769	SvPVX (scalar) = (char *)addr;
		1770	SvCUR_set (scalar, length);
		1771	SvLEN_set (scalar, 0);
		1772	SvPOK_only (scalar);
		1773
		1774	XSRETURN_YES;
		1775	}
		1776
		1777	void
		1778	munmap (SV *scalar)
		1779	CODE:
		1780	sv_unmagic (scalar, MMAP_MAGIC);
		1781
		1782	int
		1783	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1784	ALIAS:
		1785	mprotect = 1
		1786	CODE:
		1787	{
		1788	STRLEN svlen;
		1789	void *addr = SvPVbyte (scalar, svlen);
		1790	STRLEN len = SvUV (length);
		1791
		1792	if (offset < 0)
		1793	offset += svlen;
		1794
		1795	if (offset < 0 || offset > svlen)
		1796	croak ("offset outside of scalar");
		1797
		1798	if (!SvOK (length) || len + offset > svlen)
		1799	len = svlen - offset;
		1800
		1801	addr = (void *)(((intptr_t)addr) + offset);
		1802	eio_page_align (&addr, &len);
		1803
		1804	switch (ix)
		1805	{
		1806	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1807	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1808	}
		1809	}
		1810	OUTPUT:
		1811	RETVAL
		1812
		1813	int
		1814	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1815	CODE:
		1816	{
		1817	STRLEN svlen;
		1818	void *addr = SvPVbyte (scalar, svlen);
		1819	size_t len = SvUV (length);
		1820
		1821	if (offset < 0)
		1822	offset += svlen;
		1823
		1824	if (offset < 0 || offset > svlen)
		1825	croak ("offset outside of scalar");
		1826
		1827	if (!SvOK (length) || len + offset > svlen)
		1828	len = svlen - offset;
		1829
		1830	addr = (void *)(((intptr_t)addr) + offset);
		1831	eio_page_align (&addr, &len);
		1832	#if _POSIX_MEMLOCK_RANGE
		1833	RETVAL = munlock (addr, len);
		1834	#else
		1835	RETVAL = EIO_ENOSYS ();
		1836	#endif
		1837	}
		1838	OUTPUT:
		1839	RETVAL
		1840
		1841	int
		1842	munlockall ()
		1843	CODE:
		1844	#if _POSIX_MEMLOCK
		1845	munlockall ();
		1846	#else
		1847	RETVAL = EIO_ENOSYS ();
		1848	#endif
		1849	OUTPUT:
		1850	RETVAL
		1851
		1852	int
		1853	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1854	CODE:
		1855	{
		1856	#if HAVE_LINUX_SPLICE
		1857	loff_t off_in_, off_out_;
		1858	RETVAL = splice (
		1859	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1860	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1861	length, flags
		1862	);
		1863	#else
		1864	RETVAL = EIO_ENOSYS ();
		1865	#endif
		1866	}
		1867	OUTPUT:
		1868	RETVAL
		1869
		1870	int
		1871	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1872	CODE:
		1873	#if HAVE_LINUX_SPLICE
		1874	RETVAL = tee (rfh, wfh, length, flags);
		1875	#else
		1876	RETVAL = EIO_ENOSYS ();
		1877	#endif
		1878	OUTPUT:
		1879	RETVAL
		1880
		1881	int
		1882	pipesize (aio_rfd rfh, int new_size = -1)
		1883	PROTOTYPE: $;$
		1884	CODE:
		1885	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1886	if (new_size >= 0)
		1887	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1888	else
		1889	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1890	#else
		1891	errno = ENOSYS;
		1892	RETVAL = -1;
		1893	#endif
		1894	OUTPUT:
		1895	RETVAL
		1896
		1897	void
		1898	pipe2 (int flags = 0)
		1899	PROTOTYPE: ;$
		1900	PPCODE:
		1901	{
		1902	int fd[2];
		1903	int res;
		1904
		1905	if (flags)
		1906	#if HAVE_PIPE2
		1907	res = pipe2 (fd, flags);
		1908	#else
		1909	res = (errno = ENOSYS, -1);
		1910	#endif
		1911	else
		1912	res = pipe (fd);
		1913
		1914	if (!res)
		1915	{
		1916	EXTEND (SP, 2);
		1917	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1918	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1919	}
		1920	}
		1921
		1922	void _on_next_submit (SV *cb)
		1923	CODE:
		1924	SvREFCNT_dec (on_next_submit);
		1925	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1926
1265	PROTOTYPES: DISABLE	1927	PROTOTYPES: DISABLE
1266		1928
		1929	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1930
		1931	BOOT:
		1932	{
		1933	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1934	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1935	}
		1936
		1937	void
		1938	DESTROY (SV *self)
		1939	CODE:
		1940	{
		1941	aio_wd wd = SvAIO_WD (self);
		1942	#if HAVE_AT
		1943	{
		1944	SV *callback = &PL_sv_undef;
		1945	dREQ; /* clobbers next_pri :/ */
		1946	next_pri = req->pri; /* restore next_pri */
		1947	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1948	req->type = EIO_WD_CLOSE;
		1949	req->wd = wd;
		1950	REQ_SEND;
		1951	}
		1952	#else
		1953	eio_wd_close_sync (wd);
		1954	#endif
		1955	}
		1956
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1957	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1958
1269	void	1959	void
1270	cancel (aio_req_ornot req)	1960	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1961	CODE:
1273	req_cancel (req);	1962	eio_cancel (req);
		1963
		1964	void
		1965	cb (aio_req_ornot req, SV *callback = NO_INIT)
		1966	PPCODE:
		1967	{
		1968	if (GIMME_V != G_VOID)
		1969	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1970
		1971	if (items > 1)
		1972	{
		1973	SV *cb_cv = get_cb (callback);
		1974
		1975	SvREFCNT_dec (req->callback);
		1976	req->callback = SvREFCNT_inc (cb_cv);
		1977	}
		1978	}
1274		1979
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1980	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1981
1277	void	1982	void
1278	add (aio_req grp, ...)	1983	add (aio_req grp, ...)
1279	PPCODE:	1984	PPCODE:
1280	{	1985	{
1281	int i;	1986	int i;
1282		1987
1283	if (grp->fd == 2)	1988	if (grp->int1 == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1989	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1990
1286	for (i = 1; i < items; ++i )	1991	for (i = 1; i < items; ++i )
1287	{	1992	{
		1993	aio_req req;
		1994
1288	if (GIMME_V != G_VOID)	1995	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1996	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1997
1291	aio_req req = SvAIO_REQ (ST (i));	1998	req = SvAIO_REQ (ST (i));
1292		1999
1293	if (req)	2000	if (req)
1294	{	2001	eio_grp_add (grp, req);
1295	++grp->length;
1296	req->grp = grp;
1297
1298	req->grp_prev = 0;
1299	req->grp_next = grp->grp_first;
1300
1301	if (grp->grp_first)
1302	grp->grp_first->grp_prev = req;
1303
1304	grp->grp_first = req;
1305	}
1306	}	2002	}
1307	}	2003	}
		2004
		2005	void
		2006	cancel_subs (aio_req_ornot req)
		2007	CODE:
		2008	req_cancel_subs (req);
1308		2009
1309	void	2010	void
1310	result (aio_req grp, ...)	2011	result (aio_req grp, ...)
1311	CODE:	2012	CODE:
1312	{	2013	{
1313	int i;	2014	int i;
		2015	AV *av;
		2016
		2017	grp->errorno = errno;
		2018
1314	AV *av = newAV ();	2019	av = newAV ();
		2020	av_extend (av, items - 1);
1315		2021
1316	for (i = 1; i < items; ++i )	2022	for (i = 1; i < items; ++i )
1317	av_push (av, newSVsv (ST (i)));	2023	av_push (av, newSVsv (ST (i)));
1318		2024
1319	SvREFCNT_dec (grp->data);	2025	SvREFCNT_dec (grp->sv1);
1320	grp->data = (SV *)av;	2026	grp->sv1 = (SV *)av;
1321	}	2027	}
1322		2028
1323	void	2029	void
1324	lock (aio_req grp)	2030	errno (aio_req grp, int errorno = errno)
		2031	CODE:
		2032	grp->errorno = errorno;
		2033
		2034	void
		2035	limit (aio_req grp, int limit)
1325	CODE:	2036	CODE:
1326	++grp->length;	2037	eio_grp_limit (grp, limit);
1327		2038
1328	void	2039	void
1329	unlock (aio_req grp)	2040	feed (aio_req grp, SV *callback = &PL_sv_undef)
1330	CODE:	2041	CODE:
1331	aio_grp_dec (grp);
1332
1333	void
1334	feeder_limit (aio_req grp, int limit)
1335	CODE:
1336	grp->fd2 = limit;
1337	aio_grp_feed (grp);
1338
1339	void
1340	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1341	CODE:
1342	{	2042	{
1343	SvREFCNT_dec (grp->fh2);	2043	SvREFCNT_dec (grp->sv2);
1344	grp->fh2 = newSVsv (callback);	2044	grp->sv2 = newSVsv (callback);
		2045	grp->feed = aio_grp_feed;
1345		2046
1346	if (grp->fd2 <= 0)	2047	if (grp->int2 <= 0)
1347	grp->fd2 = 2;	2048	grp->int2 = 2;
1348		2049
1349	aio_grp_feed (grp);	2050	eio_grp_limit (grp, grp->int2);
1350	}	2051	}
1351		2052

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