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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.212 by root, Sun Apr 8 00:11:50 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/types.h>	14	#include <sys/types.h>
15	#include <sys/stat.h>	15	#include <sys/stat.h>
16	#include <limits.h>	16	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	17	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	18	#include <sched.h>
21		19
22	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
23	# 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>
24	# include <sys/sendfile.h>	82	#include <sys/select.h>
25	# elif __freebsd	83	#include <unistd.h>
26	# include <sys/socket.h>	84	#include <utime.h>
27	# include <sys/uio.h>	85	#include <signal.h>
28	# elif __hpux	86
29	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
30	# elif __solaris /* not yet */	88
31	# 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
32	# else	140	# else
33	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34	# endif	142	# endif
35	#endif	143	#endif
36		144
37	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
38	#ifndef NAME_MAX	146	#include "def0.h"
39	# define NAME_MAX 4096
40	#endif
41		147
42	#if __ia64	148	#ifndef makedev
43	# 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
44	#else	215	#else
45	# define STACKSIZE 8192	216	errno = ENOSYS;
46	#endif	217	#endif
		218	}
		219
		220	/*****************************************************************************/
47		221
48	enum {	222	enum {
49	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	REQ_GROUP,
59	};	224	};
60		225
61	#define AIO_REQ_KLASS "IO::AIO::REQ"
62	#define AIO_GRP_KLASS "IO::AIO::GRP"
63
64	typedef struct aio_cb
65	{
66	struct aio_cb *grp, *grp_prev, *grp_next;
67
68	struct aio_cb *volatile next;
69
70	SV *self; /* the perl counterpart of this request, if any */
71
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	Stat_t *statdata;
76	off_t offset;
77	size_t length;
78	ssize_t result;
79
80	int type;
81	int fd, fd2;
82	int errorno;
83	STRLEN dataoffset;
84	mode_t mode; /* open */
85	unsigned char cancelled;
86	} aio_cb;
87
88	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
89	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
90	typedef aio_cb *aio_group;	228	typedef eio_wd aio_wd;
91		229
92	static int started, wanted;	230	static SV *on_next_submit;
93	static volatile int nreqs;	231	static int next_pri = EIO_PRI_DEFAULT;
94	static int max_outstanding = 1<<30;	232	static int max_outstanding;
95	static int respipe [2];
96		233
97	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	234	static s_epipe respipe;
98	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
99	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
100		235
101	static volatile aio_req reqs, reqe; /* queue start, queue end */	236	static void req_destroy (aio_req req);
102	static volatile aio_req ress, rese; /* queue start, queue end */	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	}
103		252
104	/* must be called at most once */	253	/* must be called at most once */
105	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
106	{	256	{
		257	if (!req->self)
		258	{
107	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
108	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
109		262
110	return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
111	}	264	}
112		265
113	static aio_req SvAIO_REQ (SV *sv, const char *klass)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
114	{	268	{
115	if (!sv_derived_from (sv, 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")))
116	croak ("object of class %s expected", klass);	282	croak ("object of class IO::AIO::REQ expected");
117		283
118	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119		285
120	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
121	}	287	}
122		288
123	static void req_free (aio_req req)	289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		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))
		304	{
		305	dSP;
		306
		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;
		316	}
		317	}
		318
		319	static void
		320	req_submit (eio_req *req)
		321	{
		322	eio_submit (req);
		323
		324	if (expect_false (on_next_submit))
		325	{
		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))
		356	{
		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	}
		366
		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:
		374	{
		375	SV *rv = &PL_sv_undef;
		376
		377	if (req->result >= 0)
		378	{
		379	int i;
		380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		382	AV *av = newAV ();
		383
		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);
		420	names += SvCUR (name) + 1;
		421	}
		422	}
		423
		424	rv = sv_2mortal (newRV_noinc ((SV *)av));
		425	}
		426
		427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		431	}
		432	break;
		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
		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;
		595	}
		596
		597	errno = req->errorno;
		598
		599	PUTBACK;
		600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		601	SPAGAIN;
		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
		607
		608	FREETMPS;
		609	LEAVE;
		610
		611	PUTBACK;
		612	}
		613
		614	return !!SvTRUE (ERRSV);
		615	}
		616
		617	static void
		618	req_destroy (aio_req req)
124	{	619	{
125	if (req->self)	620	if (req->self)
126	{	621	{
127	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
128	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
129	}	624	}
130		625
131	if (req->data)
132	SvREFCNT_dec (req->data);
133
134	if (req->fh)
135	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
136
137	if (req->fh2)
138	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
139		628	SvREFCNT_dec (req->sv3);
140	if (req->statdata)	629	SvREFCNT_dec (req->sv4);
141	Safefree (req->statdata);
142
143	if (req->callback)
144	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
145		631
146	if (req->type == REQ_READDIR && req->result >= 0)
147	free (req->data2ptr);
148
149	Safefree (req);	632	free (req);
150	}	633	}
151		634
152	static void	635	static void
		636	req_cancel_subs (aio_req grp)
		637	{
		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
153	poll_wait ()	655	poll_wait (void)
154	{	656	{
155	if (nreqs && !ress)	657	while (eio_nreqs ())
156	{	658	{
157	fd_set rfd;	659	int size;
158	FD_ZERO(&rfd);
159	FD_SET(respipe [0], &rfd);
160		660
161	select (respipe [0] + 1, &rfd, 0, 0, 0);	661	X_LOCK (reslock);
		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);
162	}	671	}
163	}	672	}
164		673
165	static int	674	static int
166	poll_cb ()	675	poll_cb (void)
167	{	676	{
168	dSP;
169	int count = 0;
170	int do_croak = 0;
171	aio_req req;
172
173	for (;;)	677	for (;;)
174	{	678	{
175	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
176	req = ress;
177		680
178	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) (errno = ENOSYS, -1)
		704	# define munmap(addr,length) (errno = ENOSYS, -1)
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		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)
179	{	792	{
180	ress = req->next;	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
181		795
182	if (!ress)	796	if (SvOK (wdob))
183	{	797	{
184	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
185	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
186	while (read (respipe [0], buf, 32) == 32)
187	;
188
189	rese = 0;
190	}
191	}
192
193	pthread_mutex_unlock (&reslock);
194
195	if (!req)
196	break;
197
198	nreqs--;
199
200	if (req->type == REQ_QUIT)
201	started--;
202	else
203	{
204	int errorno = errno;
205	errno = req->errorno;
206
207	if (req->type == REQ_READ)
208	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
209
210	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
211	SvREADONLY_off (req->data);
212
213	if (req->statdata)
214	{
215	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
216	PL_laststatval = req->result;
217	PL_statcache = *(req->statdata);
218	}
219
220	ENTER;
221	PUSHMARK (SP);
222
223	if (req->type == REQ_READDIR)
224	{
225	SV *rv = &PL_sv_undef;
226
227	if (req->result >= 0)
228	{
229	char *buf = req->data2ptr;
230	AV *av = newAV ();
231
232	while (req->result)
233	{
234	SV *sv = newSVpv (buf, 0);
235
236	av_push (av, sv);
237	buf += SvCUR (sv) + 1;
238	req->result--;
239	}
240
241	rv = sv_2mortal (newRV_noinc ((SV *)av));
242	}
243
244	XPUSHs (rv);
245	}	800	}
246	else	801	else
247	{	802	*wd = EIO_INVALID_WD;
248	XPUSHs (sv_2mortal (newSViv (req->result)));
249
250	if (req->type == REQ_OPEN)
251	{
252	/* convert fd to fh */
253	SV *fh;
254
255	PUTBACK;
256	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
257	SPAGAIN;
258
259	fh = SvREFCNT_inc (POPs);
260
261	PUSHMARK (SP);
262	XPUSHs (sv_2mortal (fh));
263	}
264	}
265
266	if (SvOK (req->callback) && !req->cancelled)
267	{
268	PUTBACK;
269	call_sv (req->callback, G_VOID | G_EVAL);
270	SPAGAIN;
271
272	if (SvTRUE (ERRSV))
273	{
274	req_free (req);
275	croak (0);
276	}
277	}
278
279	LEAVE;
280
281	errno = errorno;
282	count++;
283	}	803	}
284		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
285	req_free (req);
286	}
287
288	return count;
289	}
290
291	static void *aio_proc(void *arg);
292
293	static void
294	start_thread (void)
295	{
296	sigset_t fullsigset, oldsigset;
297	pthread_t tid;
298	pthread_attr_t attr;
299
300	pthread_attr_init (&attr);
301	pthread_attr_setstacksize (&attr, STACKSIZE);
302	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
303
304	sigfillset (&fullsigset);
305	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
306
307	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
308	started++;
309
310	sigprocmask (SIG_SETMASK, &oldsigset, 0);
311	}
312
313	static void
314	req_send (aio_req req)
315	{
316	while (started < wanted && nreqs >= started)
317	start_thread ();
318
319	nreqs++;
320
321	pthread_mutex_lock (&reqlock);
322
323	req->next = 0;
324
325	if (reqe)
326	{
327	reqe->next = req;
328	reqe = req;
329	}
330	else
331	reqe = reqs = req;
332
333	pthread_cond_signal (&reqwait);
334	pthread_mutex_unlock (&reqlock);
335
336	if (nreqs > max_outstanding)
337	for (;;)
338	{
339	poll_cb ();
340
341	if (nreqs <= max_outstanding)
342	break;
343
344	poll_wait ();
345	}
346	}
347
348	static void
349	end_thread (void)
350	{
351	aio_req req;
352	Newz (0, req, 1, aio_cb);
353	req->type = REQ_QUIT;
354
355	req_send (req);
356	}
357
358	static void min_parallel (int nthreads)
359	{
360	if (wanted < nthreads)
361	wanted = nthreads;
362	}
363
364	static void max_parallel (int nthreads)
365	{
366	int cur = started;
367
368	if (wanted > nthreads)
369	wanted = nthreads;
370
371	while (cur > wanted)
372	{
373	end_thread ();
374	cur--;
375	}
376
377	while (started > wanted)
378	{
379	poll_wait ();
380	poll_cb ();
381	}
382	}
383
384	static void create_pipe ()
385	{
386	if (pipe (respipe))
387	croak ("unable to initialize result pipe");
388
389	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
390	croak ("cannot set result pipe to nonblocking mode");
391
392	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
393	croak ("cannot set result pipe to nonblocking mode");
394	}
395
396	/*****************************************************************************/
397	/* work around various missing functions */
398
399	#if !HAVE_PREADWRITE
400	# define pread aio_pread
401	# define pwrite aio_pwrite
402
403	/*
404	* make our pread/pwrite safe against themselves, but not against
405	* normal read/write by using a mutex. slows down execution a lot,
406	* but that's your problem, not mine.
407	*/
408	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
409
410	static ssize_t
411	pread (int fd, void *buf, size_t count, off_t offset)
412	{
413	ssize_t res;
414	off_t ooffset;
415
416	pthread_mutex_lock (&preadwritelock);
417	ooffset = lseek (fd, 0, SEEK_CUR);
418	lseek (fd, offset, SEEK_SET);
419	res = read (fd, buf, count);
420	lseek (fd, ooffset, SEEK_SET);
421	pthread_mutex_unlock (&preadwritelock);
422
423	return res;
424	}
425
426	static ssize_t
427	pwrite (int fd, void *buf, size_t count, off_t offset)
428	{
429	ssize_t res;
430	off_t ooffset;
431
432	pthread_mutex_lock (&preadwritelock);
433	ooffset = lseek (fd, 0, SEEK_CUR);
434	lseek (fd, offset, SEEK_SET);
435	res = write (fd, buf, count);
436	lseek (fd, offset, SEEK_SET);
437	pthread_mutex_unlock (&preadwritelock);
438
439	return res;
440	}
441	#endif
442
443	#if !HAVE_FDATASYNC
444	# define fdatasync fsync
445	#endif
446
447	#if !HAVE_READAHEAD
448	# define readahead aio_readahead
449
450	static ssize_t
451	readahead (int fd, off_t offset, size_t count)
452	{
453	char readahead_buf[4096];
454
455	while (count > 0)
456	{
457	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
458
459	pread (fd, readahead_buf, len, offset);
460	offset += len;
461	count -= len;
462	}
463
464	errno = 0;
465	}
466	#endif
467
468	#if !HAVE_READDIR_R
469	# define readdir_r aio_readdir_r
470
471	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472
473	static int
474	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
475	{
476	struct dirent *e;
477	int errorno;
478
479	pthread_mutex_lock (&readdirlock);
480
481	e = readdir (dirp);
482	errorno = errno;
483
484	if (e)
485	{
486	*res = ent;
487	strcpy (ent->d_name, e->d_name);
488	}
489	else
490	*res = 0;
491
492	pthread_mutex_unlock (&readdirlock);
493
494	errno = errorno;
495	return e ? 0 : -1;
496	}
497	#endif
498
499	/* sendfile always needs emulation */
500	static ssize_t
501	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
502	{
503	ssize_t res;
504
505	if (!count)
506	return 0;
507
508	#if HAVE_SENDFILE
509	# if __linux
510	res = sendfile (ofd, ifd, &offset, count);
511
512	# elif __freebsd
513	/*
514	* Of course, the freebsd sendfile is a dire hack with no thoughts
515	* wasted on making it similar to other I/O functions.
516	*/
517	{
518	off_t sbytes;
519	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
520
521	if (res < 0 && sbytes)
522	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
523	res = sbytes;
524	}
525
526	# elif __hpux
527	res = sendfile (ofd, ifd, offset, count, 0, 0);
528
529	# elif __solaris
530	{
531	struct sendfilevec vec;
532	size_t sbytes;
533
534	vec.sfv_fd = ifd;
535	vec.sfv_flag = 0;
536	vec.sfv_off = offset;
537	vec.sfv_len = count;
538
539	res = sendfilev (ofd, &vec, 1, &sbytes);
540
541	if (res < 0 && sbytes)
542	res = sbytes;
543	}
544
545	# endif
546	#else
547	res = -1;
548	errno = ENOSYS;
549	#endif
550
551	if (res < 0
552	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
553	#if __solaris
554	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
555	#endif
556	)
557	)
558	{
559	/* emulate sendfile. this is a major pain in the ass */
560	char buf[4096];
561	res = 0;
562
563	while (count)
564	{	805	{
565	ssize_t cnt;	806	*wd = (aio_wd)(long)SvIVX (rv);
566		807	*wdsv = SvREFCNT_inc_NN (rv);
567	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	808	*ptr = ".";
568		809	return; /* path set to "." */
569	if (cnt <= 0)
570	{
571	if (cnt && !res) res = -1;
572	break;
573	}
574
575	cnt = write (ofd, buf, cnt);
576
577	if (cnt <= 0)
578	{
579	if (cnt && !res) res = -1;
580	break;
581	}
582
583	offset += cnt;
584	res += cnt;
585	count -= cnt;
586	}
587	}
588
589	return res;
590	}
591
592	/* read a full directory */
593	static int
594	scandir_ (const char *path, void **namesp)
595	{
596	DIR *dirp = opendir (path);
597	union
598	{
599	struct dirent d;
600	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601	} u;
602	struct dirent *entp;
603	char *name, *names;
604	int memlen = 4096;
605	int memofs = 0;
606	int res = 0;
607	int errorno;
608
609	if (!dirp)
610	return -1;
611
612	names = malloc (memlen);
613
614	for (;;)
615	{
616	errno = 0, readdir_r (dirp, &u.d, &entp);
617
618	if (!entp)
619	break;
620
621	name = entp->d_name;
622
623	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
624	{
625	int len = strlen (name) + 1;
626
627	res++;
628
629	while (memofs + len > memlen)
630	{
631	memlen *= 2;
632	names = realloc (names, memlen);
633	if (!names)
634	break;
635	}
636
637	memcpy (names + memofs, name, len);
638	memofs += len;
639	}
640	}
641
642	errorno = errno;
643	closedir (dirp);
644
645	if (errorno)
646	{
647	free (names);
648	errno = errorno;
649	res = -1;
650	}
651
652	*namesp = (void *)names;
653	return res;
654	}
655
656	/*****************************************************************************/
657
658	static void *
659	aio_proc (void *thr_arg)
660	{
661	aio_req req;
662	int type;
663
664	do
665	{
666	pthread_mutex_lock (&reqlock);
667
668	for (;;)
669	{
670	req = reqs;
671
672	if (reqs)
673	{
674	reqs = reqs->next;
675	if (!reqs) reqe = 0;
676	}
677
678	if (req)
679	break;
680
681	pthread_cond_wait (&reqwait, &reqlock);
682	}
683
684	pthread_mutex_unlock (&reqlock);
685
686	errno = 0; /* strictly unnecessary */
687
688	if (!req->cancelled)
689	switch (req->type)
690	{
691	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
692	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
693
694	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
695	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
696
697	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
698	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
699	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
700
701	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
702	case REQ_CLOSE: req->result = close (req->fd); break;
703	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
704	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
705	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
706	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
707	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
708
709	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
710	case REQ_FSYNC: req->result = fsync (req->fd); break;
711	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
712
713	case REQ_QUIT:
714	break;
715
716	default:
717	req->result = ENOSYS;
718	break;
719	}
720
721	req->errorno = errno;
722
723	pthread_mutex_lock (&reslock);
724
725	req->next = 0;
726
727	if (rese)
728	{
729	rese->next = req;
730	rese = req;
731	}	810	}
732	else	811	else
733	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
734	rese = ress = req;
735
736	/* write a dummy byte to the pipe so fh becomes ready */
737	write (respipe [1], &respipe, 1);
738	}
739
740	pthread_mutex_unlock (&reslock);
741	}	813	}
742	while (type != REQ_QUIT);
743		814
744	return 0;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
745	}	817	}
746		818
747	/*****************************************************************************/	819	static void ecb_noinline
748		820	req_set_path1 (aio_req req, SV *path)
749	static void atfork_prepare (void)
750	{	821	{
751	pthread_mutex_lock (&reqlock);	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
752	pthread_mutex_lock (&reslock);
753	#if !HAVE_PREADWRITE
754	pthread_mutex_lock (&preadwritelock);
755	#endif
756	#if !HAVE_READDIR_R
757	pthread_mutex_lock (&readdirlock);
758	#endif
759	}	823	}
760		824
761	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)
762	{	827	{
763	#if !HAVE_READDIR_R	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
764	pthread_mutex_unlock (&readdirlock);
765	#endif
766	#if !HAVE_PREADWRITE
767	pthread_mutex_unlock (&preadwritelock);
768	#endif
769	pthread_mutex_unlock (&reslock);
770	pthread_mutex_unlock (&reqlock);
771	}
772		829
773	static void atfork_child (void)	830	switch (SvTYPE (rv))
774	{
775	aio_req prv;
776
777	started = 0;
778
779	while (reqs)
780	{	831	{
781	prv = reqs;	832	case SVt_PVIO:
782	reqs = prv->next;	833	case SVt_PVLV:
783	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;
784	}	844	}
785
786	reqs = reqe = 0;
787
788	while (ress)
789	{
790	prv = ress;
791	ress = prv->next;
792	req_free (prv);
793	}
794
795	ress = rese = 0;
796
797	close (respipe [0]);
798	close (respipe [1]);
799	create_pipe ();
800
801	atfork_parent ();
802	}	845	}
803		846
804	#define dREQ \	847	XS(boot_IO__AIO) ecb_cold;
805	aio_req req; \
806	\
807	if (SvOK (callback) && !SvROK (callback)) \
808	croak ("callback must be undef or of reference type"); \
809	\
810	Newz (0, req, 1, aio_cb); \
811	if (!req) \
812	croak ("out of memory during aio_req allocation"); \
813	\
814	req->callback = newSVsv (callback)
815		848
816	#define REQ_SEND \
817	req_send (req); \
818	\
819	if (GIMME_V != G_VOID) \
820	XPUSHs (req_sv (req, AIO_REQ_KLASS));
821
822	MODULE = IO::AIO PACKAGE = IO::AIO	849	MODULE = IO::AIO PACKAGE = IO::AIO
823		850
824	PROTOTYPES: ENABLE	851	PROTOTYPES: ENABLE
825		852
826	BOOT:	853	BOOT:
827	{	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_eio (SEEK_SET)
		962	const_eio (SEEK_CUR)
		963	const_eio (SEEK_END)
		964
		965	const_eio (MCL_FUTURE)
		966	const_eio (MCL_CURRENT)
		967
		968	const_eio (MS_ASYNC)
		969	const_eio (MS_INVALIDATE)
		970	const_eio (MS_SYNC)
		971
		972	const_eio (MT_MODIFY)
		973
		974	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		975	const_eio (SYNC_FILE_RANGE_WRITE)
		976	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		977
		978	const_eio (FALLOC_FL_KEEP_SIZE)
		979
		980	const_eio (READDIR_DENTS)
		981	const_eio (READDIR_DIRS_FIRST)
		982	const_eio (READDIR_STAT_ORDER)
		983	const_eio (READDIR_FOUND_UNKNOWN)
		984
		985	const_eio (DT_UNKNOWN)
		986	const_eio (DT_FIFO)
		987	const_eio (DT_CHR)
		988	const_eio (DT_DIR)
		989	const_eio (DT_BLK)
		990	const_eio (DT_REG)
		991	const_eio (DT_LNK)
		992	const_eio (DT_SOCK)
		993	const_eio (DT_WHT)
		994	};
		995
828	HV *stash = gv_stashpv ("IO::AIO", 1);	996	aio_stash = gv_stashpv ("IO::AIO" , 1);
829	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	997	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
830	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	998	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
831	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	999	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
832		1000
833	create_pipe ();	1001	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
834	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1002	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
835	}
836		1003
		1004	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1005
		1006	reinit ();
		1007	}
		1008
837	void	1009	void
838	min_parallel (nthreads)	1010	reinit ()
839	int nthreads	1011	PROTOTYPE:
		1012
		1013	void
		1014	max_poll_reqs (unsigned int nreqs)
840	PROTOTYPE: $	1015	PROTOTYPE: $
		1016	CODE:
		1017	eio_set_max_poll_reqs (nreqs);
841		1018
842	void	1019	void
843	max_parallel (nthreads)	1020	max_poll_time (double nseconds)
844	int nthreads
845	PROTOTYPE: $	1021	PROTOTYPE: $
846
847	int
848	max_outstanding (nreqs)
849	int nreqs
850	PROTOTYPE: $
851	CODE:	1022	CODE:
852	RETVAL = max_outstanding;	1023	eio_set_max_poll_time (nseconds);
		1024
		1025	void
		1026	min_parallel (unsigned int nthreads)
		1027	PROTOTYPE: $
		1028	CODE:
		1029	eio_set_min_parallel (nthreads);
		1030
		1031	void
		1032	max_parallel (unsigned int nthreads)
		1033	PROTOTYPE: $
		1034	CODE:
		1035	eio_set_max_parallel (nthreads);
		1036
		1037	void
		1038	max_idle (unsigned int nthreads)
		1039	PROTOTYPE: $
		1040	CODE:
		1041	eio_set_max_idle (nthreads);
		1042
		1043	void
		1044	idle_timeout (unsigned int seconds)
		1045	PROTOTYPE: $
		1046	CODE:
		1047	eio_set_idle_timeout (seconds);
		1048
		1049	void
		1050	max_outstanding (unsigned int maxreqs)
		1051	PROTOTYPE: $
		1052	CODE:
853	max_outstanding = nreqs;	1053	max_outstanding = maxreqs;
854		1054
855	void	1055	void
856	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1056	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
857	SV * pathname
858	int flags
859	int mode
860	SV * callback
861	PROTOTYPE: $$$;$
862	PPCODE:	1057	PPCODE:
863	{	1058	{
864	dREQ;	1059	dREQ;
865		1060
866	req->type = REQ_OPEN;	1061	req->type = EIO_WD_OPEN;
867	req->data = newSVsv (pathname);	1062	req_set_path1 (req, pathname);
868	req->dataptr = SvPVbyte_nolen (req->data);
869	req->fd = flags;
870	req->mode = mode;
871		1063
872	REQ_SEND;	1064	REQ_SEND;
873	}	1065	}
874		1066
875	void	1067	void
		1068	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1069	PPCODE:
		1070	{
		1071	dREQ;
		1072
		1073	req->type = EIO_OPEN;
		1074	req_set_path1 (req, pathname);
		1075	req->int1 = flags;
		1076	req->int2 = mode;
		1077
		1078	REQ_SEND;
		1079	}
		1080
		1081	void
876	aio_close (fh,callback=&PL_sv_undef)	1082	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
877	SV * fh
878	SV * callback
879	PROTOTYPE: $;$
880	ALIAS:	1083	ALIAS:
881	aio_close = REQ_CLOSE
882	aio_fsync = REQ_FSYNC	1084	aio_fsync = EIO_FSYNC
883	aio_fdatasync = REQ_FDATASYNC	1085	aio_fdatasync = EIO_FDATASYNC
		1086	aio_syncfs = EIO_SYNCFS
884	PPCODE:	1087	PPCODE:
885	{	1088	{
		1089	int fd = s_fileno_croak (fh, 0);
886	dREQ;	1090	dREQ;
887		1091
888	req->type = ix;	1092	req->type = ix;
889	req->fh = newSVsv (fh);	1093	req->sv1 = newSVsv (fh);
890	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1094	req->int1 = fd;
891		1095
892	REQ_SEND (req);	1096	REQ_SEND;
893	}	1097	}
894		1098
895	void	1099	void
		1100	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1101	PPCODE:
		1102	{
		1103	int fd = s_fileno_croak (fh, 0);
		1104	dREQ;
		1105
		1106	req->type = EIO_SYNC_FILE_RANGE;
		1107	req->sv1 = newSVsv (fh);
		1108	req->int1 = fd;
		1109	req->offs = offset;
		1110	req->size = nbytes;
		1111	req->int2 = flags;
		1112
		1113	REQ_SEND;
		1114	}
		1115
		1116	void
		1117	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_FALLOCATE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->int2 = mode;
		1127	req->offs = offset;
		1128	req->size = len;
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1138	int fd = s_fileno_croak (fh, 0);
		1139	dREQ;
		1140
		1141	if (expect_false (close_fd < 0))
		1142	{
		1143	int pipefd [2];
		1144
		1145	if (
		1146	#ifdef _WIN32
		1147	_pipe (pipefd, 1, _O_BINARY) < 0
		1148	#else
		1149	pipe (pipefd) < 0
		1150	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1151	#endif
		1152	|| close (pipefd [1]) < 0
		1153	)
		1154	abort (); /*D*/
		1155
		1156	close_fd = pipefd [0];
		1157	}
		1158
		1159	req->type = EIO_DUP2;
		1160	req->int1 = close_fd;
		1161	req->sv2 = newSVsv (fh);
		1162	req->int2 = fd;
		1163
		1164	REQ_SEND;
		1165	}
		1166
		1167	void
		1168	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1169	PPCODE:
		1170	{
		1171	int fd = s_fileno_croak (fh, 0);
		1172	dREQ;
		1173
		1174	req->type = EIO_SEEK;
		1175	req->sv1 = newSVsv (fh);
		1176	req->int1 = fd;
		1177	req->offs = SvVAL64 (offset);
		1178	req->int2 = whence;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
896	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1184	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897	SV * fh
898	UV offset
899	UV length
900	SV * data
901	UV dataoffset
902	SV * callback
903	ALIAS:	1185	ALIAS:
904	aio_read = REQ_READ	1186	aio_read = EIO_READ
905	aio_write = REQ_WRITE	1187	aio_write = EIO_WRITE
906	PROTOTYPE: $$$$$;$
907	PPCODE:	1188	PPCODE:
908	{	1189	{
909	aio_req req;
910	STRLEN svlen;	1190	STRLEN svlen;
		1191	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
911	char *svptr = SvPVbyte (data, svlen);	1192	char *svptr = SvPVbyte (data, svlen);
912		1193	UV len = SvUV (length);
913	SvUPGRADE (data, SVt_PV);
914	SvPOK_on (data);
915		1194
916	if (dataoffset < 0)	1195	if (dataoffset < 0)
917	dataoffset += svlen;	1196	dataoffset += svlen;
918		1197
919	if (dataoffset < 0 || dataoffset > svlen)	1198	if (dataoffset < 0 || dataoffset > svlen)
920	croak ("data offset outside of string");	1199	croak ("dataoffset outside of data scalar");
921		1200
922	if (ix == REQ_WRITE)	1201	if (ix == EIO_WRITE)
923	{	1202	{
924	/* write: check length and adjust. */	1203	/* write: check length and adjust. */
925	if (length < 0 || length + dataoffset > svlen)	1204	if (!SvOK (length) || len + dataoffset > svlen)
926	length = svlen - dataoffset;	1205	len = svlen - dataoffset;
927	}	1206	}
928	else	1207	else
929	{	1208	{
930	/* read: grow scalar as necessary */	1209	/* read: check type and grow scalar as necessary */
		1210	SvUPGRADE (data, SVt_PV);
931	svptr = SvGROW (data, length + dataoffset);	1211	svptr = SvGROW (data, len + dataoffset + 1);
932	}	1212	}
933
934	if (length < 0)
935	croak ("length must not be negative");
936		1213
937	{	1214	{
938	dREQ;	1215	dREQ;
939		1216
940	req->type = ix;	1217	req->type = ix;
941	req->fh = newSVsv (fh);	1218	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1219	req->int1 = fd;
943	: IoOFP (sv_2io (fh)));	1220	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
944	req->offset = offset;	1221	req->size = len;
945	req->length = length;
946	req->data = SvREFCNT_inc (data);	1222	req->sv2 = SvREFCNT_inc (data);
947	req->dataptr = (char *)svptr + dataoffset;	1223	req->ptr2 = (char *)svptr + dataoffset;
		1224	req->stroffset = dataoffset;
948		1225
949	if (!SvREADONLY (data))	1226	if (!SvREADONLY (data))
950	{	1227	{
951	SvREADONLY_on (data);	1228	SvREADONLY_on (data);
952	req->data2ptr = (void *)data;	1229	req->flags |= FLAG_SV2_RO_OFF;
953	}	1230	}
954		1231
955	REQ_SEND;	1232	REQ_SEND;
956	}	1233	}
957	}	1234	}
958		1235
959	void	1236	void
960	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1237	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
961	SV * out_fh	1238	ALIAS:
962	SV * in_fh	1239	aio_readlink = EIO_READLINK
963	UV in_offset	1240	aio_realpath = EIO_REALPATH
964	UV length
965	SV * callback
966	PROTOTYPE: $$$$;$
967	PPCODE:	1241	PPCODE:
968	{	1242	{
		1243	dREQ;
		1244
		1245	req->type = ix;
		1246	req_set_path1 (req, pathname);
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1253	PPCODE:
		1254	{
		1255	int ifd = s_fileno_croak (in_fh , 0);
		1256	int ofd = s_fileno_croak (out_fh, 1);
969	dREQ;	1257	dREQ;
970		1258
971	req->type = REQ_SENDFILE;	1259	req->type = EIO_SENDFILE;
972	req->fh = newSVsv (out_fh);	1260	req->sv1 = newSVsv (out_fh);
973	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1261	req->int1 = ofd;
974	req->fh2 = newSVsv (in_fh);	1262	req->sv2 = newSVsv (in_fh);
975	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1263	req->int2 = ifd;
976	req->offset = in_offset;	1264	req->offs = in_offset;
977	req->length = length;	1265	req->size = length;
978		1266
979	REQ_SEND;	1267	REQ_SEND;
980	}	1268	}
981		1269
982	void	1270	void
983	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1271	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
984	SV * fh
985	UV offset
986	IV length
987	SV * callback
988	PROTOTYPE: $$$;$
989	PPCODE:	1272	PPCODE:
990	{	1273	{
		1274	int fd = s_fileno_croak (fh, 0);
991	dREQ;	1275	dREQ;
992		1276
993	req->type = REQ_READAHEAD;	1277	req->type = EIO_READAHEAD;
994	req->fh = newSVsv (fh);	1278	req->sv1 = newSVsv (fh);
995	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1279	req->int1 = fd;
996	req->offset = offset;	1280	req->offs = offset;
997	req->length = length;	1281	req->size = length;
998		1282
999	REQ_SEND;	1283	REQ_SEND;
1000	}	1284	}
1001		1285
1002	void	1286	void
1003	aio_stat (fh_or_path,callback=&PL_sv_undef)	1287	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1004	SV * fh_or_path
1005	SV * callback
1006	ALIAS:	1288	ALIAS:
1007	aio_stat = REQ_STAT	1289	aio_stat = EIO_STAT
1008	aio_lstat = REQ_LSTAT	1290	aio_lstat = EIO_LSTAT
		1291	aio_statvfs = EIO_STATVFS
1009	PPCODE:	1292	PPCODE:
1010	{	1293	{
1011	dREQ;	1294	dREQ;
1012		1295
1013	New (0, req->statdata, 1, Stat_t);	1296	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1014	if (!req->statdata)
1015	{
1016	req_free (req);
1017	croak ("out of memory during aio_req->statdata allocation");
1018	}
1019
1020	if (SvPOK (fh_or_path))
1021	{
1022	req->type = ix;
1023	req->data = newSVsv (fh_or_path);
1024	req->dataptr = SvPVbyte_nolen (req->data);
1025	}
1026	else
1027	{
1028	req->type = REQ_FSTAT;
1029	req->fh = newSVsv (fh_or_path);
1030	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1031	}
1032		1297
1033	REQ_SEND;	1298	REQ_SEND;
1034	}	1299	}
1035		1300
		1301	UV
		1302	major (UV dev)
		1303	ALIAS:
		1304	minor = 1
		1305	CODE:
		1306	RETVAL = ix ? major (dev) : minor (dev);
		1307	OUTPUT:
		1308	RETVAL
		1309
		1310	UV
		1311	makedev (UV maj, UV min)
		1312	CODE:
		1313	RETVAL = makedev (maj, min);
		1314	OUTPUT:
		1315	RETVAL
		1316
1036	void	1317	void
		1318	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1324	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1325	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1326
		1327	REQ_SEND;
		1328	}
		1329
		1330	void
		1331	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1332	PPCODE:
		1333	{
		1334	dREQ;
		1335
		1336	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1337	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
		1348	req->int2 = mode;
		1349	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1350
		1351	REQ_SEND;
		1352	}
		1353
		1354	void
		1355	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1361	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1362	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
		1373	req->type = EIO_READDIR;
		1374	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1375
		1376	if (flags & EIO_READDIR_DENTS)
		1377	req->int1 |= EIO_READDIR_CUSTOM2;
		1378
		1379	req_set_path1 (req, pathname);
		1380
		1381	REQ_SEND;
		1382	}
		1383
		1384	void
		1385	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1386	PPCODE:
		1387	{
		1388	dREQ;
		1389
		1390	req->type = EIO_MKDIR;
		1391	req->int2 = mode;
		1392	req_set_path1 (req, pathname);
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
1037	aio_unlink (pathname,callback=&PL_sv_undef)	1398	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1038	SV * pathname
1039	SV * callback
1040	ALIAS:	1399	ALIAS:
1041	aio_unlink = REQ_UNLINK	1400	aio_unlink = EIO_UNLINK
1042	aio_rmdir = REQ_RMDIR	1401	aio_rmdir = EIO_RMDIR
1043	aio_readdir = REQ_READDIR	1402	aio_readdir = EIO_READDIR
1044	PPCODE:	1403	PPCODE:
1045	{	1404	{
1046	dREQ;	1405	dREQ;
1047		1406
1048	req->type = ix;	1407	req->type = ix;
1049	req->data = newSVsv (pathname);	1408	req_set_path1 (req, pathname);
1050	req->dataptr = SvPVbyte_nolen (req->data);	1409
1051
1052	REQ_SEND;	1410	REQ_SEND;
1053	}	1411	}
1054		1412
1055	void	1413	void
1056	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1414	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1057	SV * oldpath
1058	SV * newpath
1059	SV * callback
1060	ALIAS:	1415	ALIAS:
1061	aio_link = REQ_LINK	1416	aio_link = EIO_LINK
1062	aio_symlink = REQ_SYMLINK	1417	aio_symlink = EIO_SYMLINK
1063	aio_rename = REQ_RENAME	1418	aio_rename = EIO_RENAME
1064	PPCODE:	1419	PPCODE:
1065	{	1420	{
		1421	eio_wd wd2 = 0;
1066	dREQ;	1422	dREQ;
1067		1423
1068	req->type = ix;	1424	req->type = ix;
1069	req->fh = newSVsv (oldpath);	1425	req_set_path1 (req, oldpath);
1070	req->data2ptr = SvPVbyte_nolen (req->fh);	1426	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1071	req->data = newSVsv (newpath);	1427	req->int3 = (long)wd2;
1072	req->dataptr = SvPVbyte_nolen (req->data);
1073		1428
1074	REQ_SEND;	1429	REQ_SEND;
1075	}	1430	}
1076		1431
1077	void	1432	void
1078	aio_group (callback=&PL_sv_undef)	1433	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1079	SV * callback	1434	PPCODE:
1080	PROTOTYPE: ;&	1435	{
		1436	dREQ;
		1437
		1438	req->type = EIO_MKNOD;
		1439	req->int2 = (mode_t)mode;
		1440	req->offs = dev;
		1441	req_set_path1 (req, pathname);
		1442
		1443	REQ_SEND;
		1444	}
		1445
		1446	void
		1447	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1448	ALIAS:
		1449	aio_mtouch = EIO_MTOUCH
		1450	aio_msync = EIO_MSYNC
1081	PPCODE:	1451	PPCODE:
1082	{	1452	{
		1453	STRLEN svlen;
		1454	char *svptr = SvPVbyte (data, svlen);
		1455	UV len = SvUV (length);
		1456
		1457	if (offset < 0)
		1458	offset += svlen;
		1459
		1460	if (offset < 0 || offset > svlen)
		1461	croak ("offset outside of scalar");
		1462
		1463	if (!SvOK (length) || len + offset > svlen)
		1464	len = svlen - offset;
		1465
		1466	{
		1467	dREQ;
		1468
		1469	req->type = ix;
		1470	req->sv2 = SvREFCNT_inc (data);
		1471	req->ptr2 = (char *)svptr + offset;
		1472	req->size = len;
		1473	req->int1 = flags;
		1474
		1475	REQ_SEND;
		1476	}
		1477	}
		1478
		1479	void
		1480	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1481	PPCODE:
		1482	{
		1483	STRLEN svlen;
		1484	char *svptr = SvPVbyte (data, svlen);
		1485	UV len = SvUV (length);
		1486
		1487	if (offset < 0)
		1488	offset += svlen;
		1489
		1490	if (offset < 0 || offset > svlen)
		1491	croak ("offset outside of scalar");
		1492
		1493	if (!SvOK (length) || len + offset > svlen)
		1494	len = svlen - offset;
		1495
		1496	{
		1497	dREQ;
		1498
		1499	req->type = EIO_MLOCK;
		1500	req->sv2 = SvREFCNT_inc (data);
		1501	req->ptr2 = (char *)svptr + offset;
		1502	req->size = len;
		1503
		1504	REQ_SEND;
		1505	}
		1506	}
		1507
		1508	void
		1509	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1510	PPCODE:
		1511	{
		1512	dREQ;
		1513
		1514	req->type = EIO_MLOCKALL;
		1515	req->int1 = flags;
		1516
		1517	REQ_SEND;
		1518	}
		1519
		1520	void
		1521	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1522	PPCODE:
		1523	{
		1524	int fd = s_fileno_croak (fh, 0);
1083	dREQ;	1525	dREQ;
		1526
		1527	req->type = EIO_CUSTOM;
		1528	req->sv1 = newSVsv (fh);
		1529	req->int1 = fd;
		1530
		1531	req->feed = fiemap;
		1532	#if HAVE_FIEMAP
		1533	/* keep our fingers crossed that the next two types are 64 bit */
		1534	req->offs = start;
		1535	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1536	req->int2 = flags;
		1537	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1538	#endif
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1545	PPCODE:
		1546	{
		1547	dREQ;
		1548
		1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
		1551
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	aio_group (SV *callback=&PL_sv_undef)
		1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
1084	req->type = REQ_GROUP;	1561	req->type = EIO_GROUP;
		1562
		1563	req_submit (req);
1085	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1564	XPUSHs (req_sv (req, aio_grp_stash));
1086	}	1565	}
		1566
		1567	void
		1568	aio_nop (SV *callback=&PL_sv_undef)
		1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = ix;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	int
		1582	aioreq_pri (int pri = 0)
		1583	CODE:
		1584	RETVAL = next_pri;
		1585	if (items > 0)
		1586	{
		1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1589	next_pri = pri;
		1590	}
		1591	OUTPUT:
		1592	RETVAL
		1593
		1594	void
		1595	aioreq_nice (int nice = 0)
		1596	CODE:
		1597	nice = next_pri - nice;
		1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1600	next_pri = nice;
1087		1601
1088	void	1602	void
1089	flush ()	1603	flush ()
1090	PROTOTYPE:
1091	CODE:	1604	CODE:
1092	while (nreqs)	1605	while (eio_nreqs ())
1093	{	1606	{
1094	poll_wait ();	1607	poll_wait ();
1095	poll_cb ();	1608	poll_cb ();
1096	}	1609	}
1097		1610
1098	void	1611	int
1099	poll()	1612	poll ()
1100	PROTOTYPE:
1101	CODE:	1613	CODE:
1102	if (nreqs)
1103	{
1104	poll_wait ();	1614	poll_wait ();
1105	poll_cb ();	1615	RETVAL = poll_cb ();
1106	}
1107
1108	int
1109	poll_fileno()
1110	PROTOTYPE:
1111	CODE:
1112	RETVAL = respipe [0];
1113	OUTPUT:	1616	OUTPUT:
1114	RETVAL	1617	RETVAL
1115		1618
1116	int	1619	int
		1620	poll_fileno ()
		1621	CODE:
		1622	RETVAL = s_epipe_fd (&respipe);
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
1117	poll_cb(...)	1627	poll_cb (...)
1118	PROTOTYPE:	1628	PROTOTYPE:
1119	CODE:	1629	CODE:
1120	RETVAL = poll_cb ();	1630	RETVAL = poll_cb ();
1121	OUTPUT:	1631	OUTPUT:
1122	RETVAL	1632	RETVAL
1123		1633
1124	void	1634	void
1125	poll_wait()	1635	poll_wait ()
1126	PROTOTYPE:
1127	CODE:	1636	CODE:
1128	if (nreqs)
1129	poll_wait ();	1637	poll_wait ();
1130		1638
1131	int	1639	int
1132	nreqs()	1640	nreqs ()
1133	PROTOTYPE:
1134	CODE:	1641	CODE:
1135	RETVAL = nreqs;	1642	RETVAL = eio_nreqs ();
1136	OUTPUT:	1643	OUTPUT:
1137	RETVAL	1644	RETVAL
1138		1645
		1646	int
		1647	nready ()
		1648	CODE:
		1649	RETVAL = eio_nready ();
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653	int
		1654	npending ()
		1655	CODE:
		1656	RETVAL = eio_npending ();
		1657	OUTPUT:
		1658	RETVAL
		1659
		1660	int
		1661	nthreads ()
		1662	CODE:
		1663	RETVAL = eio_nthreads ();
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
		1668	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1669	CODE:
		1670	RETVAL = posix_fadvise (fh, offset, length, advice);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	IV
		1675	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1676	CODE:
		1677	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void
		1682	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1683	PPCODE:
		1684	sv_unmagic (scalar, MMAP_MAGIC);
		1685	{
		1686	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1687	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1688	if (addr == (void *)-1)
		1689	XSRETURN_NO;
		1690
		1691	sv_force_normal (scalar);
		1692
		1693	/* we store the length in mg_obj, as namlen is I32 :/ */
		1694	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1695	->mg_obj = (SV *)length;
		1696
		1697	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1698
		1699	if (!(prot & PROT_WRITE))
		1700	SvREADONLY_on (scalar);
		1701
		1702	if (SvLEN (scalar))
		1703	Safefree (SvPVX (scalar));
		1704
		1705	SvPVX (scalar) = (char *)addr;
		1706	SvCUR_set (scalar, length);
		1707	SvLEN_set (scalar, 0);
		1708	SvPOK_only (scalar);
		1709
		1710	XSRETURN_YES;
		1711	}
		1712
		1713	void
		1714	munmap (SV *scalar)
		1715	CODE:
		1716	sv_unmagic (scalar, MMAP_MAGIC);
		1717
		1718	int
		1719	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1720	ALIAS:
		1721	mprotect = 1
		1722	CODE:
		1723	{
		1724	STRLEN svlen;
		1725	void *addr = SvPVbyte (scalar, svlen);
		1726	size_t len = SvUV (length);
		1727
		1728	if (offset < 0)
		1729	offset += svlen;
		1730
		1731	if (offset < 0 || offset > svlen)
		1732	croak ("offset outside of scalar");
		1733
		1734	if (!SvOK (length) || len + offset > svlen)
		1735	len = svlen - offset;
		1736
		1737	addr = (void *)(((intptr_t)addr) + offset);
		1738	eio_page_align (&addr, &len);
		1739
		1740	switch (ix)
		1741	{
		1742	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1743	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1744	}
		1745	}
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	int
		1750	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1751	CODE:
		1752	{
		1753	STRLEN svlen;
		1754	void *addr = SvPVbyte (scalar, svlen);
		1755	size_t len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	addr = (void *)(((intptr_t)addr) + offset);
		1767	eio_page_align (&addr, &len);
		1768	#if _POSIX_MEMLOCK_RANGE
		1769	RETVAL = munlock (addr, len);
		1770	#else
		1771	RETVAL = ((errno = ENOSYS), -1);
		1772	#endif
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlockall ()
		1779	CODE:
		1780	#if _POSIX_MEMLOCK
		1781	munlockall ();
		1782	#else
		1783	RETVAL = -1;
		1784	errno = ENOSYS;
		1785	#endif
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void _on_next_submit (SV *cb)
		1790	CODE:
		1791	SvREFCNT_dec (on_next_submit);
		1792	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1793
		1794	PROTOTYPES: DISABLE
		1795
		1796	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1797
		1798	BOOT:
		1799	{
		1800	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1801	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1802	}
		1803
		1804	void
		1805	DESTROY (SV *self)
		1806	CODE:
		1807	{
		1808	aio_wd wd = SvAIO_WD (self);
		1809	#if HAVE_AT
		1810	{
		1811	SV *callback = &PL_sv_undef;
		1812	dREQ; /* clobbers next_pri :/ */
		1813	next_pri = req->pri; /* restore next_pri */
		1814	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1815	req->type = EIO_WD_CLOSE;
		1816	req->wd = wd;
		1817	REQ_SEND;
		1818	}
		1819	#else
		1820	eio_wd_close_sync (wd);
		1821	#endif
		1822	}
		1823
1139	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140		1825
1141	void	1826	void
1142	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1143	PROTOTYPE:
1144	CODE:	1828	CODE:
1145	req->cancelled = 1;	1829	eio_cancel (req);
1146		1830
		1831	void
		1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1833	PPCODE:
		1834	{
		1835	if (GIMME_V != G_VOID)
		1836	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1837
		1838	if (items > 1)
		1839	{
		1840	SV *cb_cv =get_cb (callback);
		1841
		1842	SvREFCNT_dec (req->callback);
		1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
		1846
		1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1848
		1849	void
		1850	add (aio_req grp, ...)
		1851	PPCODE:
		1852	{
		1853	int i;
		1854
		1855	if (grp->int1 == 2)
		1856	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1857
		1858	for (i = 1; i < items; ++i )
		1859	{
		1860	aio_req req;
		1861
		1862	if (GIMME_V != G_VOID)
		1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1864
		1865	req = SvAIO_REQ (ST (i));
		1866
		1867	if (req)
		1868	eio_grp_add (grp, req);
		1869	}
		1870	}
		1871
		1872	void
		1873	cancel_subs (aio_req_ornot req)
		1874	CODE:
		1875	req_cancel_subs (req);
		1876
		1877	void
		1878	result (aio_req grp, ...)
		1879	CODE:
		1880	{
		1881	int i;
		1882	AV *av;
		1883
		1884	grp->errorno = errno;
		1885
		1886	av = newAV ();
		1887	av_extend (av, items - 1);
		1888
		1889	for (i = 1; i < items; ++i )
		1890	av_push (av, newSVsv (ST (i)));
		1891
		1892	SvREFCNT_dec (grp->sv1);
		1893	grp->sv1 = (SV *)av;
		1894	}
		1895
		1896	void
		1897	errno (aio_req grp, int errorno = errno)
		1898	CODE:
		1899	grp->errorno = errorno;
		1900
		1901	void
		1902	limit (aio_req grp, int limit)
		1903	CODE:
		1904	eio_grp_limit (grp, limit);
		1905
		1906	void
		1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1908	CODE:
		1909	{
		1910	SvREFCNT_dec (grp->sv2);
		1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
		1913
		1914	if (grp->int2 <= 0)
		1915	grp->int2 = 2;
		1916
		1917	eio_grp_limit (grp, grp->int2);
		1918	}
		1919

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