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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.11 by root, Wed Jul 20 21:55:27 2005 UTC vs.
Revision 1.275 by root, Mon Mar 18 23:52:09 2019 UTC

1	#define _XOPEN_SOURCE 500	1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
		8	#include "perliol.h"
6		9
		10	#if !defined mg_findext
		11	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		12	#endif
		13
		14	#include <stddef.h>
		15	#include <stdlib.h>
		16	#include <errno.h>
7	#include <sys/types.h>	17	#include <sys/types.h>
		18	#include <sys/socket.h>
8	#include <sys/stat.h>	19	#include <sys/stat.h>
9
10	#include <unistd.h>	20	#include <limits.h>
11	#include <fcntl.h>	21	#include <fcntl.h>
12	#include <signal.h>
13	#include <sched.h>	22	#include <sched.h>
14	#if __linux	23
15	#include <sys/syscall.h>	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. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
16	#endif	35	# endif
		36	#endif
17		37
18	#include <pthread.h>	38	/* perl namespace pollution */
		39	#undef VERSION
19		40
20	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	41	/* perl stupidly overrides readdir and maybe others */
21	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */	42	/* with thread-unsafe versions, imagine that :( */
22	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */	43	#undef readdir
		44	#undef opendir
		45	#undef closedir
23		46
24	#if __ia64	47	#ifdef _WIN32
25	# define STACKSIZE 65536	48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80	#undef utime
		81
		82	#define EIO_STRUCT_STAT struct _stati64
		83	#define EIO_STRUCT_STATI64
		84
26	#else	85	#else
27	# define STACKSIZE 4096	86
		87	#include <sys/time.h>
		88	#include <sys/select.h>
		89	#include <unistd.h>
		90	#include <utime.h>
		91	#include <signal.h>
		92
		93	#define EIO_STRUCT_STAT Stat_t
		94
		95	#endif
		96
		97	/*****************************************************************************/
		98
		99	#if __GNUC__ >= 3
		100	# define expect(expr,value) __builtin_expect ((expr),(value))
		101	#else
		102	# define expect(expr,value) (expr)
		103	#endif
		104
		105	#define expect_false(expr) expect ((expr) != 0, 0)
		106	#define expect_true(expr) expect ((expr) != 0, 1)
		107
		108	/*****************************************************************************/
		109
		110	#include "config.h"
		111
		112	#if HAVE_SYS_MKDEV_H
		113	# include <sys/mkdev.h>
		114	#elif HAVE_SYS_SYSMACROS_H
		115	# include <sys/sysmacros.h>
		116	#endif
		117
		118	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		119	# include <sys/mman.h>
		120	#endif
		121
		122	#if HAVE_SYS_UIO_H
		123	# include <sys/uio.h>
		124	#endif
		125
		126	#if HAVE_ST_XTIMENSEC
		127	# define ATIMENSEC PL_statcache.st_atimensec
		128	# define MTIMENSEC PL_statcache.st_mtimensec
		129	# define CTIMENSEC PL_statcache.st_ctimensec
		130	#elif HAVE_ST_XTIMESPEC
		131	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		132	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		133	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		134	#else
		135	# define ATIMENSEC 0
		136	# define MTIMENSEC 0
		137	# define CTIMENSEC 0
		138	#endif
		139
		140	#if HAVE_ST_BIRTHTIMENSEC
		141	# define BTIMESEC PL_statcache.st_birthtime
		142	# define BTIMENSEC PL_statcache.st_birthtimensec
		143	#elif HAVE_ST_BIRTHTIMESPEC
		144	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		145	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		146	#else
		147	# define BTIMESEC 0
		148	# define BTIMENSEC 0
		149	#endif
		150
		151	#if HAVE_ST_GEN
		152	# define ST_GEN PL_statcache.st_gen
		153	#else
		154	# define ST_GEN 0
		155	#endif
		156
		157	#include "schmorp.h"
		158
		159	#if HAVE_EVENTFD
		160	# include <sys/eventfd.h>
		161	#endif
		162
		163	#if HAVE_TIMERFD
		164	# include <sys/timerfd.h>
		165	#endif
		166
		167	#if HAVE_RLIMITS
		168	#include <sys/time.h>
		169	#include <sys/resource.h>
		170	#endif
		171
		172	typedef SV SV8; /* byte-sv, used for argument-checking */
		173	typedef int aio_rfd; /* read file desriptor */
		174	typedef int aio_wfd; /* write file descriptor */
		175
		176	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		177
		178	#define EIO_REQ_MEMBERS \
		179	SV *callback; \
		180	SV *sv1, *sv2; \
		181	SV *sv3, *sv4; \
		182	STRLEN stroffset; \
		183	SV *self;
		184
		185	#define EIO_NO_WRAPPERS 1
		186
		187	#include "libeio/eio.h"
		188
		189	static int req_invoke (eio_req *req);
		190	#define EIO_FINISH(req) req_invoke (req)
		191	static void req_destroy (eio_req *grp);
		192	#define EIO_DESTROY(req) req_destroy (req)
		193
		194	#include "libeio/eio.c"
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef MAP_ANONYMOUS
		205	# ifdef MAP_ANON
		206	# define MAP_ANONYMOUS MAP_ANON
		207	# else
		208	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		209	# endif
		210	#endif
		211
		212	#ifndef makedev
		213	# define makedev(maj,min) (((maj) << 8) | (min))
		214	#endif
		215	#ifndef major
		216	# define major(dev) ((dev) >> 8)
		217	#endif
		218	#ifndef minor
		219	# define minor(dev) ((dev) & 0xff)
		220	#endif
		221
		222	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
		223	#ifdef __sun
		224	# undef PAGESIZE
		225	#endif
		226
		227	#if PAGESIZE <= 0
		228	# define PAGESIZE sysconf (_SC_PAGESIZE)
		229	#endif
		230
		231	/*****************************************************************************/
		232
		233	#if !_POSIX_MAPPED_FILES
		234	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		235	# define munmap(addr,length) EIO_ENOSYS ()
		236	#endif
		237
		238	#if !_POSIX_MEMORY_PROTECTION
		239	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		240	#endif
		241
		242	#if !MREMAP_MAYMOVE
		243	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		244	#endif
		245
		246	#define FOREIGN_MAGIC PERL_MAGIC_ext
		247
		248	static int ecb_cold
		249	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		250	{
		251	int old_errno = errno;
		252	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		253	errno = old_errno;
		254
		255	mg->mg_obj = 0; /* just in case */
		256
		257	SvREADONLY_off (sv);
		258
		259	if (SvPVX (sv) != mg->mg_ptr)
		260	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		261
		262	SvCUR_set (sv, 0);
		263	SvPVX (sv) = 0;
		264	SvOK_off (sv);
		265
		266	return 0;
		267	}
		268
		269	static MGVTBL mmap_vtbl = {
		270	0, 0, 0, 0, mmap_free
		271	};
		272
		273	static int ecb_cold
		274	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		275	{
		276	free (mg->mg_ptr);
		277	mg->mg_obj = 0; /* just in case */
		278
		279	SvREADONLY_off (sv);
		280
		281	if (SvPVX (sv) != mg->mg_ptr)
		282	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		283
		284	SvCUR_set (sv, 0);
		285	SvPVX (sv) = 0;
		286	SvOK_off (sv);
		287
		288	return 0;
		289	}
		290
		291	static MGVTBL sysfree_vtbl = {
		292	0, 0, 0, 0, sysfree_free
		293	};
		294
		295	/*****************************************************************************/
		296
		297	/* helper: set scalar to foreign ptr with custom free */
		298	ecb_noinline
		299	static void
		300	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		301	{
		302	sv_force_normal (sv);
		303
		304	/* we store the length in mg_obj, as namlen is I32 :/ */
		305	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		306	->mg_obj = (SV *)length;
		307
		308	SvUPGRADE (sv, SVt_PV); /* nop... */
		309
		310	if (SvLEN (sv))
		311	Safefree (SvPVX (sv));
		312
		313	SvPVX (sv) = (char *)addr;
		314	SvCUR_set (sv, length);
		315	SvLEN_set (sv, 0);
		316	SvPOK_only (sv);
		317	}
		318
		319	static void
		320	sv_clear_foreign (SV *sv)
		321	{
		322	/* todo: iterate over magic and only free ours, but of course */
		323	/* the perl5porters will call that (correct) behaviour buggy */
		324	sv_unmagic (sv, FOREIGN_MAGIC);
		325	}
		326
		327	/*****************************************************************************/
		328
		329	/* defines all sorts of constants to 0 unless they are already defined */
		330	/* also provides const_iv_ and const_niv_ macros for them */
		331	#include "def0.h"
		332
		333	/*****************************************************************************/
		334
		335	static void
		336	fiemap (eio_req *req)
		337	{
		338	req->result = -1;
		339
		340	#if HAVE_FIEMAP
		341	/* assume some c99 */
		342	struct fiemap *fiemap = 0;
		343	size_t end_offset;
		344	int count = req->int3;
		345
		346	req->flags |= EIO_FLAG_PTR1_FREE;
		347
		348	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		349	/* increase in 3.5kb steps */
		350	if (count < 0)
		351	count = 8;
		352
		353	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		354	errno = ENOMEM;
		355	if (!fiemap)
		356	return;
		357
		358	req->ptr1 = fiemap;
		359
		360	fiemap->fm_start = req->offs;
		361	fiemap->fm_length = req->size;
		362	fiemap->fm_flags = req->int2;
		363	fiemap->fm_extent_count = count;
		364
		365	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		366	return;
		367
		368	if (req->int3 >= 0 /* not autosizing */
		369	|| !fiemap->fm_mapped_extents /* no more extents */
		370	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		371	goto done;
		372
		373	/* else we have to loop -
		374	* it would be tempting (actually I tried that first) to just query the
		375	* number of extents needed, but linux often feels like not returning all
		376	* extents, without telling us it left any out. this complicates
		377	* this quite a bit.
		378	*/
		379
		380	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		381
		382	for (;;)
		383	{
		384	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		385	char scratch[3072];
		386	struct fiemap *incmap = (struct fiemap *)scratch;
		387
		388	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		389	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		390	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		391	incmap->fm_flags = fiemap->fm_flags;
		392	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		393
		394	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		395	return;
		396
		397	if (!incmap->fm_mapped_extents)
		398	goto done;
		399
		400	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		401	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		402	errno = ENOMEM;
		403	if (!fiemap)
		404	return;
		405
		406	req->ptr1 = fiemap;
		407
		408	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		409	{
		410	struct fiemap_extent *e = incmap->fm_extents + count;
		411
		412	if (e->fe_logical + e->fe_length >= end_offset)
		413	goto done;
		414
		415	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		416
		417	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		418	goto done;
		419
		420	}
		421	}
		422
		423	done:
		424	req->result = 0;
		425
		426	#else
		427	errno = ENOSYS;
		428	#endif
		429	}
		430
		431	/*****************************************************************************/
		432
		433	static int close_fd; /* dummy fd to close fds via dup2 */
		434
		435	#if HAVE_STATX
		436	static struct statx stx;
		437	#define statx_offsetof(member) offsetof (struct statx, member)
		438	#define eio__statx statx
		439	#else
		440	#define statx_offsetof(member) 0
		441	#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
28	#endif	442	#endif
29		443
30	enum {	444	enum {
31	REQ_QUIT,	445	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35	REQ_FSYNC, REQ_FDATASYNC,
36	};	446	};
37		447
38	typedef struct aio_cb {
39	struct aio_cb *volatile next;
40
41	int type;
42
43	int fd;
44	off_t offset;
45	size_t length;
46	ssize_t result;
47	mode_t mode; /* open */
48	int errorno;
49	SV *data, *callback;
50	void *dataptr;
51	STRLEN dataoffset;
52
53	Stat_t *statdata;
54	} aio_cb;
55
56	typedef aio_cb *aio_req;	448	typedef eio_req *aio_req;
		449	typedef eio_req *aio_req_ornot;
		450	typedef eio_wd aio_wd;
57		451
58	static int started;	452	static SV *on_next_submit;
59	static volatile int nreqs;	453	static int next_pri = EIO_PRI_DEFAULT;
60	static int max_outstanding = 1<<30;	454	static int max_outstanding;
61	static int respipe [2];
62		455
63	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	456	static s_epipe respipe;
64	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66		457
67	static volatile aio_req reqs, reqe; /* queue start, queue end */	458	static void req_destroy (aio_req req);
68	static volatile aio_req ress, rese; /* queue start, queue end */	459	static void req_cancel (aio_req req);
69		460
70	static void	461	static void
71	poll_wait ()	462	want_poll (void)
72	{	463	{
73	if (nreqs && !ress)	464	/* write a dummy byte to the pipe so fh becomes ready */
		465	s_epipe_signal (&respipe);
		466	}
		467
		468	static void
		469	done_poll (void)
		470	{
		471	/* read any signals sent by the worker threads */
		472	s_epipe_drain (&respipe);
		473	}
		474
		475	/* must be called at most once */
		476	ecb_noinline
		477	static SV *
		478	req_sv (aio_req req, HV *stash)
		479	{
		480	if (!req->self)
74	{	481	{
75	fd_set rfd;	482	req->self = (SV *)newHV ();
76	FD_ZERO(&rfd);	483	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77	FD_SET(respipe [0], &rfd);
78
79	select (respipe [0] + 1, &rfd, 0, 0, 0);
80	}	484	}
		485
		486	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		487	}
		488
		489	static SV *
		490	newSVaio_wd (aio_wd wd)
		491	{
		492	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		493	}
		494
		495	ecb_noinline
		496	static aio_req
		497	SvAIO_REQ (SV *sv)
		498	{
		499	MAGIC *mg;
		500
		501	if (!SvROK (sv)
		502	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		503	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		504	&& SvSTASH (SvRV (sv)) != aio_req_stash
		505	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		506	croak ("object of class IO::AIO::REQ expected");
		507
		508	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		509
		510	return mg ? (aio_req)mg->mg_ptr : 0;
		511	}
		512
		513	static aio_wd
		514	SvAIO_WD (SV *sv)
		515	{
		516	if (!SvROK (sv)
		517	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		518	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		519	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		520
		521	return (aio_wd)(long)SvIVX (SvRV (sv));
		522	}
		523
		524	static SV *
		525	newmortalFH (int fd, int flags)
		526	{
		527	if (fd < 0)
		528	return &PL_sv_undef;
		529
		530	GV *gv = (GV *)sv_newmortal ();
		531	char sym[64];
		532	int symlen;
		533
		534	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		535	gv_init (gv, aio_stash, sym, symlen, 0);
		536
		537	symlen = snprintf (
		538	sym,
		539	sizeof (sym),
		540	"%s&=%d",
		541	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		542	fd
		543	);
		544
		545	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		546	? (SV *)gv : &PL_sv_undef;
		547	}
		548
		549	static void
		550	aio_grp_feed (aio_req grp)
		551	{
		552	if (grp->sv2 && SvOK (grp->sv2))
		553	{
		554	dSP;
		555
		556	ENTER;
		557	SAVETMPS;
		558	PUSHMARK (SP);
		559	XPUSHs (req_sv (grp, aio_grp_stash));
		560	PUTBACK;
		561	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		562	SPAGAIN;
		563	FREETMPS;
		564	LEAVE;
		565	}
		566	}
		567
		568	ecb_noinline
		569	static void
		570	req_submit (eio_req *req)
		571	{
		572	eio_submit (req);
		573
		574	if (expect_false (on_next_submit))
		575	{
		576	dSP;
		577	SV *cb = sv_2mortal (on_next_submit);
		578
		579	on_next_submit = 0;
		580
		581	PUSHMARK (SP);
		582	PUTBACK;
		583	call_sv (cb, G_DISCARD | G_EVAL);
		584	}
81	}	585	}
82		586
83	static int	587	static int
84	poll_cb ()	588	req_invoke (eio_req *req)
85	{	589	{
86	dSP;	590	if (req->flags & FLAG_SV2_RO_OFF)
87	int count = 0;	591	SvREADONLY_off (req->sv2);
88	aio_req req, prv;
89		592
90	static int rl;//D	593	if (!EIO_CANCELLED (req) && req->callback)
91	//printf ("%d ENTER\n", ++rl);//D
92
93	pthread_mutex_lock (&reslock);
94
95	{
96	/* read any signals sent by the worker threads */
97	char buf [32];
98	while (read (respipe [0], buf, 32) > 0)
99	;
100	}
101
102	req = ress;
103	ress = rese = 0;
104
105	pthread_mutex_unlock (&reslock);
106
107	while (req)
108	{	594	{
109	nreqs--;	595	dSP;
110	//printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D	596	static SV *sv_result_cache; /* caches the result integer SV */
		597	SV *sv_result;
111		598
112	if (req->type == REQ_QUIT)	599	ENTER;
113	started--;	600	SAVETMPS;
114	else	601	PUSHMARK (SP);
		602	EXTEND (SP, 1);
		603
		604	/* do not recreate the result IV from scratch each time */
		605	if (expect_true (sv_result_cache))
115	{	606	{
116	int errorno = errno;	607	sv_result = sv_result_cache; sv_result_cache = 0;
117	errno = req->errorno;	608	SvIV_set (sv_result, req->result);
118		609	SvIOK_only (sv_result);
119	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset
121	+ req->result > 0 ? req->result : 0);
122
123	if (req->data)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}
134
135	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));
137
138	if (req->type == REQ_OPEN)
139	{
140	/* convert fd to fh */
141	SV *fh;
142
143	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145	SPAGAIN;
146
147	fh = POPs;
148
149	PUSHMARK (SP);
150	XPUSHs (fh);
151	}
152
153	if (SvOK (req->callback))
154	{
155	PUTBACK;
156	call_sv (req->callback, G_VOID | G_EVAL);
157	SPAGAIN;
158	}
159
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162
163	errno = errorno;
164	count++;
165	}
166
167	prv = req;
168	req = req->next;
169	Safefree (prv);
170
171	/* TODO: croak on errors? */
172	}
173
174	//printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D
175	return count;
176	}
177
178	static void *aio_proc(void *arg);
179
180	static void
181	start_thread (void)
182	{
183	sigset_t fullsigset, oldsigset;
184	pthread_t tid;
185	pthread_attr_t attr;
186
187	pthread_attr_init (&attr);
188	pthread_attr_setstacksize (&attr, STACKSIZE);
189	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
190
191	sigfillset (&fullsigset);
192	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
193
194	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
195	started++;
196
197	sigprocmask (SIG_SETMASK, &oldsigset, 0);
198	}
199
200	static void
201	send_req (aio_req req)
202	{
203	nreqs++;
204
205	pthread_mutex_lock (&reqlock);
206
207	req->next = 0;
208
209	if (reqe)
210	{
211	reqe->next = req;
212	reqe = req;
213	}
214	else
215	reqe = reqs = req;
216
217	pthread_cond_signal (&reqwait);
218	pthread_mutex_unlock (&reqlock);
219
220	while (nreqs > max_outstanding)
221	{
222	poll_wait ();
223	poll_cb ();
224	}
225	}
226
227	static void
228	end_thread (void)
229	{
230	aio_req req;
231	New (0, req, 1, aio_cb);
232	req->type = REQ_QUIT;
233
234	send_req (req);
235	}
236
237	static void
238	read_write (int dowrite, int fd, off_t offset, size_t length,
239	SV *data, STRLEN dataoffset, SV *callback)
240	{
241	aio_req req;
242	STRLEN svlen;
243	char *svptr = SvPV (data, svlen);
244
245	SvUPGRADE (data, SVt_PV);
246	SvPOK_on (data);
247
248	if (dataoffset < 0)
249	dataoffset += svlen;
250
251	if (dataoffset < 0 || dataoffset > svlen)
252	croak ("data offset outside of string");
253
254	if (dowrite)
255	{
256	/* write: check length and adjust. */
257	if (length < 0 || length + dataoffset > svlen)
258	length = svlen - dataoffset;
259	}
260	else
261	{
262	/* read: grow scalar as necessary */
263	svptr = SvGROW (data, length + dataoffset);
264	}
265
266	if (length < 0)
267	croak ("length must not be negative");
268
269	Newz (0, req, 1, aio_cb);
270
271	if (!req)
272	croak ("out of memory during aio_req allocation");
273
274	req->type = dowrite ? REQ_WRITE : REQ_READ;
275	req->fd = fd;
276	req->offset = offset;
277	req->length = length;
278	req->data = SvREFCNT_inc (data);
279	req->dataptr = (char *)svptr + dataoffset;
280	req->callback = SvREFCNT_inc (callback);
281
282	send_req (req);
283	}
284
285	static void *
286	aio_proc (void *thr_arg)
287	{
288	aio_req req;
289	int type;
290
291	do
292	{
293	pthread_mutex_lock (&reqlock);
294
295	for (;;)
296	{
297	req = reqs;
298
299	if (reqs)
300	{
301	reqs = reqs->next;
302	if (!reqs) reqe = 0;
303	}
304
305	if (req)
306	break;
307
308	pthread_cond_wait (&reqwait, &reqlock);
309	}
310
311	pthread_mutex_unlock (&reqlock);
312
313	errno = 0; /* strictly unnecessary */
314
315	type = req->type;
316
317	switch (type)
318	{
319	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
320	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
321	#if SYS_readahead
322	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
323	#else
324	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
325	#endif
326
327	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
328	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
329	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
330
331	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
332	case REQ_CLOSE: req->result = close (req->fd); break;
333	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
334
335	case REQ_FSYNC: req->result = fsync (req->fd); break;
336	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
337
338	case REQ_QUIT:
339	break;
340
341	default:
342	req->result = ENOSYS;
343	break;
344	}
345
346	req->errorno = errno;
347
348	pthread_mutex_lock (&reslock);
349
350	req->next = 0;
351
352	if (rese)
353	{
354	rese->next = req;
355	rese = req;
356	}	610	}
357	else	611	else
358	{	612	{
359	rese = ress = req;	613	sv_result = newSViv (req->result);
360		614	SvREADONLY_on (sv_result);
361	/* write a dummy byte to the pipe so fh becomes ready */
362	write (respipe [1], &respipe, 1);
363	}	615	}
364		616
365	pthread_mutex_unlock (&reslock);	617	switch (req->type)
		618	{
		619	case EIO_WD_OPEN:
		620	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		621	break;
		622
		623	case EIO_READDIR:
		624	{
		625	SV *rv = &PL_sv_undef;
		626
		627	if (req->result >= 0)
		628	{
		629	int i;
		630	char *names = (char *)req->ptr2;
		631	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		632	AV *av = newAV ();
		633
		634	av_extend (av, req->result - 1);
		635
		636	for (i = 0; i < req->result; ++i)
		637	{
		638	if (req->int1 & EIO_READDIR_DENTS)
		639	{
		640	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		641
		642	if (req->int1 & EIO_READDIR_CUSTOM2)
		643	{
		644	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		645	AV *avent = newAV ();
		646
		647	av_extend (avent, 2);
		648
		649	if (!sv_type [ent->type])
		650	{
		651	sv_type [ent->type] = newSViv (ent->type);
		652	SvREADONLY_on (sv_type [ent->type]);
		653	}
		654
		655	av_store (avent, 0, namesv);
		656	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		657	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		658
		659	av_store (av, i, newRV_noinc ((SV *)avent));
		660	}
		661	else
		662	av_store (av, i, namesv);
		663
		664	++ent;
		665	}
		666	else
		667	{
		668	SV *name = newSVpv (names, 0);
		669	av_store (av, i, name);
		670	names += SvCUR (name) + 1;
		671	}
		672	}
		673
		674	rv = sv_2mortal (newRV_noinc ((SV *)av));
		675	}
		676
		677	PUSHs (rv);
		678
		679	if (req->int1 & EIO_READDIR_CUSTOM1)
		680	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		681	}
		682	break;
		683
		684	case EIO_OPEN:
		685	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		686	break;
		687
		688	case EIO_STATVFS:
		689	case EIO_FSTATVFS:
		690	{
		691	SV *rv = &PL_sv_undef;
		692
		693	#ifndef _WIN32
		694	if (req->result >= 0)
		695	{
		696	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		697	HV *hv = newHV ();
		698	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		699	* chooses to make it a struct.
		700	*/
		701	unsigned long fsid = 0;
		702	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		703
		704	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		705
		706	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		707	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		708	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		709	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		710	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		711	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		712	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		713	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		714	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		715	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		716	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		717	}
		718	#endif
		719
		720	PUSHs (rv);
		721	}
		722
		723	break;
		724
		725	case EIO_GROUP:
		726	req->int1 = 2; /* mark group as finished */
		727
		728	if (req->sv1)
		729	{
		730	int i;
		731	AV *av = (AV *)req->sv1;
		732
		733	EXTEND (SP, AvFILL (av) + 1);
		734	for (i = 0; i <= AvFILL (av); ++i)
		735	PUSHs (*av_fetch (av, i, 0));
		736	}
		737	break;
		738
		739	case EIO_NOP:
		740	case EIO_BUSY:
		741	break;
		742
		743	case EIO_READLINK:
		744	case EIO_REALPATH:
		745	if (req->result > 0)
		746	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		747	break;
		748
		749	case EIO_STAT:
		750	case EIO_LSTAT:
		751	case EIO_FSTAT:
		752	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		753
		754	if (!(PL_laststatval = req->result))
		755	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		756	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		757
		758	PUSHs (sv_result);
		759	break;
		760
		761	case EIO_SEEK:
		762	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		763	break;
		764
		765	case EIO_READ:
		766	{
		767	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		768	*SvEND (req->sv2) = 0;
		769	SvPOK_only (req->sv2);
		770	SvSETMAGIC (req->sv2);
		771	PUSHs (sv_result);
		772	}
		773	break;
		774
		775	case EIO_SLURP:
		776	{
		777	if (req->result >= 0)
		778	{
		779	/* if length was originally not known, we steal the malloc'ed memory */
		780	if (req->flags & EIO_FLAG_PTR2_FREE)
		781	{
		782	req->flags &= ~EIO_FLAG_PTR2_FREE;
		783	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		784	}
		785	else
		786	{
		787	SvCUR_set (req->sv2, req->result);
		788	*SvEND (req->sv2) = 0;
		789	SvPOK_only (req->sv2);
		790	}
		791
		792	SvSETMAGIC (req->sv2);
		793	}
		794
		795	PUSHs (sv_result);
		796	}
		797	break;
		798
		799	case EIO_CUSTOM:
		800	if (req->feed == fiemap)
		801	{
		802	#if HAVE_FIEMAP
		803	if (!req->result)
		804	{
		805	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		806
		807	if (fiemap->fm_extent_count)
		808	{
		809	AV *av = newAV ();
		810	int i;
		811
		812	while (fiemap->fm_mapped_extents)
		813	{
		814	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		815	AV *ext_av = newAV ();
		816
		817	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		818	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		819	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		820	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		821
		822	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		823	}
		824
		825	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		826	}
		827	else
		828	{
		829	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		830	PUSHs (sv_result);
		831	}
		832	}
		833	#endif
		834	}
		835	else
		836	PUSHs (sv_result);
		837	break;
		838
		839	#if 0
		840	case EIO_CLOSE:
		841	PerlIOUnix_refcnt_dec (req->int1);
		842	break;
		843	#endif
		844
		845	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		846	if (req->result > 0)
		847	SvIV_set (sv_result, 0);
		848	/* FALLTHROUGH */
		849
		850	default:
		851	PUSHs (sv_result);
		852	break;
		853	}
		854
		855	errno = req->errorno;
		856
		857	PUTBACK;
		858	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		859	SPAGAIN;
		860
		861	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		862	SvREFCNT_dec (sv_result);
		863	else
		864	sv_result_cache = sv_result;
		865
		866	FREETMPS;
		867	LEAVE;
		868
		869	PUTBACK;
366	}	870	}
367	while (type != REQ_QUIT);
368		871
		872	return !!SvTRUE (ERRSV);
		873	}
		874
		875	static void
		876	req_destroy (aio_req req)
		877	{
		878	if (req->self)
		879	{
		880	sv_unmagic (req->self, PERL_MAGIC_ext);
		881	SvREFCNT_dec (req->self);
		882	}
		883
		884	SvREFCNT_dec (req->sv1);
		885	SvREFCNT_dec (req->sv2);
		886	SvREFCNT_dec (req->sv3);
		887	SvREFCNT_dec (req->sv4);
		888	SvREFCNT_dec (req->callback);
		889
		890	free (req);
		891	}
		892
		893	static void
		894	req_cancel_subs (aio_req grp)
		895	{
		896	if (grp->type != EIO_GROUP)
		897	return;
		898
		899	SvREFCNT_dec (grp->sv2);
		900	grp->sv2 = 0;
		901
		902	eio_grp_cancel (grp);
		903	}
		904
		905	ecb_cold
		906	static void
		907	create_respipe (void)
		908	{
		909	if (s_epipe_renew (&respipe))
		910	croak ("IO::AIO: unable to initialize result pipe");
		911	}
		912
		913	static void
		914	poll_wait (void)
		915	{
		916	while (eio_nreqs ())
		917	{
		918	int size;
		919
		920	X_LOCK (EIO_POOL->reslock);
		921	size = EIO_POOL->res_queue.size;
		922	X_UNLOCK (EIO_POOL->reslock);
		923
		924	if (size)
		925	return;
		926
		927	etp_maybe_start_thread (EIO_POOL);
		928
		929	s_epipe_wait (&respipe);
		930	}
		931	}
		932
		933	static int
		934	poll_cb (void)
		935	{
		936	for (;;)
		937	{
		938	int res = eio_poll ();
		939
		940	if (res > 0)
		941	croak (0);
		942
		943	if (!max_outstanding || max_outstanding > eio_nreqs ())
		944	return res;
		945
		946	poll_wait ();
		947	}
		948	}
		949
		950	ecb_cold
		951	static void
		952	reinit (void)
		953	{
		954	create_respipe ();
		955
		956	if (eio_init (want_poll, done_poll) < 0)
		957	croak ("IO::AIO: unable to initialise eio library");
		958	}
		959
		960	/*****************************************************************************/
		961
		962	static SV *
		963	get_cb (SV *cb_sv)
		964	{
		965	SvGETMAGIC (cb_sv);
		966	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		967	}
		968
		969	ecb_noinline
		970	static aio_req ecb_noinline
		971	dreq (SV *callback)
		972	{
		973	SV *cb_cv;
		974	aio_req req;
		975	int req_pri = next_pri;
		976	next_pri = EIO_PRI_DEFAULT;
		977
		978	cb_cv = get_cb (callback);
		979
		980	req = calloc (sizeof (*req), 1);
		981	if (!req)
		982	croak ("out of memory during eio_req allocation");
		983
		984	req->callback = SvREFCNT_inc (cb_cv);
		985	req->pri = req_pri;
		986
369	return 0;	987	return req;
370	}	988	}
		989
		990	#define dREQ \
		991	aio_req req = dreq (callback); \
		992
		993	#define REQ_SEND \
		994	PUTBACK; \
		995	req_submit (req); \
		996	SPAGAIN; \
		997	\
		998	if (GIMME_V != G_VOID) \
		999	XPUSHs (req_sv (req, aio_req_stash));
		1000
		1001	/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
		1002	ecb_inline
		1003	void
		1004	req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		1005	{
		1006	if (expect_false (SvROK (path)))
		1007	{
		1008	SV *rv = SvRV (path);
		1009	SV *wdob;
		1010
		1011	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		1012	{
		1013	path = AvARRAY (rv)[1];
		1014	wdob = AvARRAY (rv)[0];
		1015
		1016	if (SvOK (wdob))
		1017	{
		1018	*wd = SvAIO_WD (wdob);
		1019	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		1020	}
		1021	else
		1022	*wd = EIO_INVALID_WD;
		1023	}
		1024	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		1025	{
		1026	*wd = (aio_wd)(long)SvIVX (rv);
		1027	*wdsv = SvREFCNT_inc_NN (rv);
		1028	*ptr = ".";
		1029	return; /* path set to "." */
		1030	}
		1031	else
		1032	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		1033	}
		1034
		1035	*pathsv = newSVsv (path);
		1036	*ptr = SvPVbyte_nolen (*pathsv);
		1037	}
		1038
		1039	ecb_noinline
		1040	static void
		1041	req_set_path1 (aio_req req, SV *path)
		1042	{
		1043	req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		1044	}
		1045
		1046	ecb_noinline
		1047	static void
		1048	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		1049	{
		1050	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1051
		1052	switch (SvTYPE (rv))
		1053	{
		1054	case SVt_PVIO:
		1055	case SVt_PVLV:
		1056	case SVt_PVGV:
		1057	req->type = type_fh;
		1058	req->sv1 = newSVsv (fh_or_path);
		1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1060	break;
		1061
		1062	default:
		1063	req->type = type_path;
		1064	req_set_path1 (req, fh_or_path);
		1065	break;
		1066	}
		1067	}
		1068
		1069	/*****************************************************************************/
		1070
		1071	static void
		1072	ts_set (struct timespec *ts, NV value)
		1073	{
		1074	ts->tv_sec = value;
		1075	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1076	}
		1077
		1078	static NV
		1079	ts_get (const struct timespec *ts)
		1080	{
		1081	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1082	}
		1083
		1084	/*****************************************************************************/
		1085
		1086	XS(boot_IO__AIO) ecb_cold;
371		1087
372	MODULE = IO::AIO PACKAGE = IO::AIO	1088	MODULE = IO::AIO PACKAGE = IO::AIO
373		1089
374	PROTOTYPES: ENABLE	1090	PROTOTYPES: ENABLE
375		1091
376	BOOT:	1092	BOOT:
377	{	1093	{
378	if (pipe (respipe))	1094	static const struct {
379	croak ("unable to initialize result pipe");	1095	const char *name;
		1096	IV iv;
		1097	} *civ, const_iv[] = {
		1098	# define const_niv(name, value) { # name, (IV) value },
		1099	# define const_iv(name) { # name, (IV) name },
		1100	# define const_eio(name) { # name, (IV) EIO_ ## name },
380		1101
381	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1102	/* you have to re-run ./gendef0 after adding/removing any constants here */
382	croak ("cannot set result pipe to nonblocking mode");	1103	/* the first block can be undef if missing */
		1104	const_iv (ENOSYS)
		1105	const_iv (EXDEV)
		1106	const_iv (EBADR)
383		1107
384	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	1108	/* for lseek */
385	croak ("cannot set result pipe to nonblocking mode");	1109	const_iv (SEEK_DATA)
386	}	1110	const_iv (SEEK_HOLE)
387		1111
		1112	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1113	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1114	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1115	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1116	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1117	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1118
		1119	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1120	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1121	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1122	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1123	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1124
		1125	/* the second block will be 0 when missing */
		1126	const_iv (O_ACCMODE)
		1127
		1128	const_iv (O_RDONLY)
		1129	const_iv (O_WRONLY)
		1130	const_iv (O_RDWR)
		1131	const_iv (O_CREAT)
		1132	const_iv (O_TRUNC)
		1133	const_iv (O_EXCL)
		1134	const_iv (O_APPEND)
		1135
		1136	const_iv (O_ASYNC)
		1137	const_iv (O_DIRECT)
		1138	const_iv (O_NOATIME)
		1139
		1140	const_iv (O_CLOEXEC)
		1141	const_iv (O_NOCTTY)
		1142	const_iv (O_NOFOLLOW)
		1143	const_iv (O_NONBLOCK)
		1144	const_iv (O_EXEC)
		1145	const_iv (O_SEARCH)
		1146	const_iv (O_DIRECTORY)
		1147	const_iv (O_DSYNC)
		1148	const_iv (O_RSYNC)
		1149	const_iv (O_SYNC)
		1150	const_iv (O_PATH)
		1151	const_iv (O_TMPFILE)
		1152	const_iv (O_TTY_INIT)
		1153
		1154	const_iv (S_IFIFO)
		1155	const_iv (S_IFCHR)
		1156	const_iv (S_IFBLK)
		1157	const_iv (S_IFLNK)
		1158	const_iv (S_IFREG)
		1159	const_iv (S_IFDIR)
		1160	const_iv (S_IFWHT)
		1161	const_iv (S_IFSOCK)
		1162	const_iv (S_IFMT)
		1163
		1164	const_iv (ST_RDONLY)
		1165	const_iv (ST_NOSUID)
		1166	const_iv (ST_NODEV)
		1167	const_iv (ST_NOEXEC)
		1168	const_iv (ST_SYNCHRONOUS)
		1169	const_iv (ST_MANDLOCK)
		1170	const_iv (ST_WRITE)
		1171	const_iv (ST_APPEND)
		1172	const_iv (ST_IMMUTABLE)
		1173	const_iv (ST_NOATIME)
		1174	const_iv (ST_NODIRATIME)
		1175	const_iv (ST_RELATIME)
		1176
		1177	const_iv (PROT_NONE)
		1178	const_iv (PROT_EXEC)
		1179	const_iv (PROT_READ)
		1180	const_iv (PROT_WRITE)
		1181
		1182	const_iv (MAP_PRIVATE)
		1183	const_iv (MAP_SHARED)
		1184	const_iv (MAP_FIXED)
		1185	const_iv (MAP_ANONYMOUS)
		1186
		1187	/* linuxish */
		1188	const_iv (MAP_LOCKED)
		1189	const_iv (MAP_NORESERVE)
		1190	const_iv (MAP_POPULATE)
		1191	const_iv (MAP_NONBLOCK)
		1192	const_iv (MAP_GROWSDOWN)
		1193	const_iv (MAP_32BIT)
		1194	const_iv (MAP_HUGETLB)
		1195	const_iv (MAP_STACK)
		1196
		1197	const_iv (MREMAP_MAYMOVE)
		1198	const_iv (MREMAP_FIXED)
		1199
		1200	const_iv (F_DUPFD_CLOEXEC)
		1201
		1202	const_iv (MSG_CMSG_CLOEXEC)
		1203	const_iv (SOCK_CLOEXEC)
		1204
		1205	const_iv (F_OFD_GETLK)
		1206	const_iv (F_OFD_SETLK)
		1207	const_iv (F_OFD_GETLKW)
		1208
		1209	const_iv (FIFREEZE)
		1210	const_iv (FITHAW)
		1211	const_iv (FITRIM)
		1212	const_iv (FICLONE)
		1213	const_iv (FICLONERANGE)
		1214	const_iv (FIDEDUPERANGE)
		1215
		1216	const_iv (FS_IOC_GETFLAGS)
		1217	const_iv (FS_IOC_SETFLAGS)
		1218	const_iv (FS_IOC_GETVERSION)
		1219	const_iv (FS_IOC_SETVERSION)
		1220	const_iv (FS_IOC_FIEMAP)
		1221	const_iv (FS_IOC_FSGETXATTR)
		1222	const_iv (FS_IOC_FSSETXATTR)
		1223	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1224	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1225	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1226
		1227	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1228
		1229	const_iv (FS_SECRM_FL)
		1230	const_iv (FS_UNRM_FL)
		1231	const_iv (FS_COMPR_FL)
		1232	const_iv (FS_SYNC_FL)
		1233	const_iv (FS_IMMUTABLE_FL)
		1234	const_iv (FS_APPEND_FL)
		1235	const_iv (FS_NODUMP_FL)
		1236	const_iv (FS_NOATIME_FL)
		1237	const_iv (FS_DIRTY_FL)
		1238	const_iv (FS_COMPRBLK_FL)
		1239	const_iv (FS_NOCOMP_FL)
		1240	const_iv (FS_ENCRYPT_FL)
		1241	const_iv (FS_BTREE_FL)
		1242	const_iv (FS_INDEX_FL)
		1243	const_iv (FS_JOURNAL_DATA_FL)
		1244	const_iv (FS_NOTAIL_FL)
		1245	const_iv (FS_DIRSYNC_FL)
		1246	const_iv (FS_TOPDIR_FL)
		1247	const_iv (FS_FL_USER_MODIFIABLE)
		1248
		1249	const_iv (FS_XFLAG_REALTIME)
		1250	const_iv (FS_XFLAG_PREALLOC)
		1251	const_iv (FS_XFLAG_IMMUTABLE)
		1252	const_iv (FS_XFLAG_APPEND)
		1253	const_iv (FS_XFLAG_SYNC)
		1254	const_iv (FS_XFLAG_NOATIME)
		1255	const_iv (FS_XFLAG_NODUMP)
		1256	const_iv (FS_XFLAG_RTINHERIT)
		1257	const_iv (FS_XFLAG_PROJINHERIT)
		1258	const_iv (FS_XFLAG_NOSYMLINKS)
		1259	const_iv (FS_XFLAG_EXTSIZE)
		1260	const_iv (FS_XFLAG_EXTSZINHERIT)
		1261	const_iv (FS_XFLAG_NODEFRAG)
		1262	const_iv (FS_XFLAG_FILESTREAM)
		1263	const_iv (FS_XFLAG_DAX)
		1264	const_iv (FS_XFLAG_HASATTR)
		1265
		1266	const_iv (FIEMAP_FLAG_SYNC)
		1267	const_iv (FIEMAP_FLAG_XATTR)
		1268	const_iv (FIEMAP_FLAGS_COMPAT)
		1269	const_iv (FIEMAP_EXTENT_LAST)
		1270	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1271	const_iv (FIEMAP_EXTENT_DELALLOC)
		1272	const_iv (FIEMAP_EXTENT_ENCODED)
		1273	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1274	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1275	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1276	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1277	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1278	const_iv (FIEMAP_EXTENT_MERGED)
		1279	const_iv (FIEMAP_EXTENT_SHARED)
		1280
		1281	const_iv (SPLICE_F_MOVE)
		1282	const_iv (SPLICE_F_NONBLOCK)
		1283	const_iv (SPLICE_F_MORE)
		1284	const_iv (SPLICE_F_GIFT)
		1285
		1286	const_iv (EFD_CLOEXEC)
		1287	const_iv (EFD_NONBLOCK)
		1288	const_iv (EFD_SEMAPHORE)
		1289
		1290	const_iv (CLOCK_REALTIME)
		1291	const_iv (CLOCK_MONOTONIC)
		1292	const_iv (CLOCK_BOOTTIME)
		1293	const_iv (CLOCK_REALTIME_ALARM)
		1294	const_iv (CLOCK_BOOTTIME_ALARM)
		1295
		1296	const_iv (TFD_NONBLOCK)
		1297	const_iv (TFD_CLOEXEC)
		1298
		1299	const_iv (TFD_TIMER_ABSTIME)
		1300	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1301
		1302	const_iv (STATX_TYPE)
		1303	const_iv (STATX_MODE)
		1304	const_iv (STATX_NLINK)
		1305	const_iv (STATX_UID)
		1306	const_iv (STATX_GID)
		1307	const_iv (STATX_ATIME)
		1308	const_iv (STATX_MTIME)
		1309	const_iv (STATX_CTIME)
		1310	const_iv (STATX_INO)
		1311	const_iv (STATX_SIZE)
		1312	const_iv (STATX_BLOCKS)
		1313	const_iv (STATX_BASIC_STATS)
		1314	const_iv (STATX_ALL)
		1315	const_iv (STATX_BTIME)
		1316	const_iv (STATX_ATTR_COMPRESSED)
		1317	const_iv (STATX_ATTR_IMMUTABLE)
		1318	const_iv (STATX_ATTR_APPEND)
		1319	const_iv (STATX_ATTR_NODUMP)
		1320	const_iv (STATX_ATTR_ENCRYPTED)
		1321	const_iv (STATX_ATTR_AUTOMOUNT)
		1322
		1323	/* these are libeio constants, and are independent of gendef0 */
		1324	const_eio (SEEK_SET)
		1325	const_eio (SEEK_CUR)
		1326	const_eio (SEEK_END)
		1327
		1328	const_eio (MCL_FUTURE)
		1329	const_eio (MCL_CURRENT)
		1330	const_eio (MCL_ONFAULT)
		1331
		1332	const_eio (MS_ASYNC)
		1333	const_eio (MS_INVALIDATE)
		1334	const_eio (MS_SYNC)
		1335
		1336	const_eio (MT_MODIFY)
		1337
		1338	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1339	const_eio (SYNC_FILE_RANGE_WRITE)
		1340	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1341
		1342	const_eio (FALLOC_FL_KEEP_SIZE)
		1343	const_eio (FALLOC_FL_PUNCH_HOLE)
		1344	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1345	const_eio (FALLOC_FL_ZERO_RANGE)
		1346	const_eio (FALLOC_FL_INSERT_RANGE)
		1347	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1348
		1349	const_eio (RENAME_NOREPLACE)
		1350	const_eio (RENAME_EXCHANGE)
		1351	const_eio (RENAME_WHITEOUT)
		1352
		1353	const_eio (READDIR_DENTS)
		1354	const_eio (READDIR_DIRS_FIRST)
		1355	const_eio (READDIR_STAT_ORDER)
		1356	const_eio (READDIR_FOUND_UNKNOWN)
		1357
		1358	const_eio (DT_UNKNOWN)
		1359	const_eio (DT_FIFO)
		1360	const_eio (DT_CHR)
		1361	const_eio (DT_DIR)
		1362	const_eio (DT_BLK)
		1363	const_eio (DT_REG)
		1364	const_eio (DT_LNK)
		1365	const_eio (DT_SOCK)
		1366	const_eio (DT_WHT)
		1367	};
		1368
		1369	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1370	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1371	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1372	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1373
		1374	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1375	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1376
		1377	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1378
		1379	/* allocate dummy pipe fd for aio_close */
		1380	{
		1381	int pipefd [2];
		1382
		1383	if (
		1384	#ifdef _WIN32
		1385	_pipe (pipefd, 1, _O_BINARY) < 0
		1386	#else
		1387	pipe (pipefd) < 0
		1388	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1389	#endif
		1390	|| close (pipefd [1]) < 0
		1391	)
		1392	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1393
		1394	close_fd = pipefd [0];
		1395	}
		1396
		1397	reinit ();
		1398	}
		1399
388	void	1400	void
389	min_parallel(nthreads)	1401	reinit ()
390	int nthreads	1402	PROTOTYPE:
		1403
		1404	void
		1405	max_poll_reqs (unsigned int nreqs)
391	PROTOTYPE: $	1406	PROTOTYPE: $
392	CODE:	1407	CODE:
393	while (nthreads > started)	1408	eio_set_max_poll_reqs (nreqs);
394	start_thread ();
395		1409
396	void	1410	void
397	max_parallel(nthreads)	1411	max_poll_time (double nseconds)
398	int nthreads
399	PROTOTYPE: $	1412	PROTOTYPE: $
400	CODE:	1413	CODE:
		1414	eio_set_max_poll_time (nseconds);
		1415
		1416	void
		1417	min_parallel (unsigned int nthreads)
		1418	PROTOTYPE: $
		1419	CODE:
		1420	eio_set_min_parallel (nthreads);
		1421
		1422	void
		1423	max_parallel (unsigned int nthreads)
		1424	PROTOTYPE: $
		1425	CODE:
		1426	eio_set_max_parallel (nthreads);
		1427
		1428	void
		1429	max_idle (unsigned int nthreads)
		1430	PROTOTYPE: $
		1431	CODE:
		1432	eio_set_max_idle (nthreads);
		1433
		1434	void
		1435	idle_timeout (unsigned int seconds)
		1436	PROTOTYPE: $
		1437	CODE:
		1438	eio_set_idle_timeout (seconds);
		1439
		1440	void
		1441	max_outstanding (unsigned int maxreqs)
		1442	PROTOTYPE: $
		1443	CODE:
		1444	max_outstanding = maxreqs;
		1445
		1446	void
		1447	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1448	PPCODE:
401	{	1449	{
402	int cur = started;	1450	dREQ;
403	while (cur > nthreads)	1451
404	{	1452	req->type = EIO_WD_OPEN;
405	end_thread ();	1453	req_set_path1 (req, pathname);
406	cur--;	1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
		1459	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1460	PPCODE:
		1461	{
		1462	dREQ;
		1463
		1464	req->type = EIO_OPEN;
		1465	req_set_path1 (req, pathname);
		1466	req->int1 = flags;
		1467	req->int2 = mode;
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1474	ALIAS:
		1475	aio_fsync = EIO_FSYNC
		1476	aio_fdatasync = EIO_FDATASYNC
		1477	aio_syncfs = EIO_SYNCFS
		1478	PPCODE:
		1479	{
		1480	int fd = s_fileno_croak (fh, 0);
		1481	dREQ;
		1482
		1483	req->type = ix;
		1484	req->sv1 = newSVsv (fh);
		1485	req->int1 = fd;
		1486
		1487	REQ_SEND;
		1488	}
		1489
		1490	void
		1491	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1492	PPCODE:
		1493	{
		1494	int fd = s_fileno_croak (fh, 0);
		1495	dREQ;
		1496
		1497	req->type = EIO_SYNC_FILE_RANGE;
		1498	req->sv1 = newSVsv (fh);
		1499	req->int1 = fd;
		1500	req->offs = offset;
		1501	req->size = nbytes;
		1502	req->int2 = flags;
		1503
		1504	REQ_SEND;
		1505	}
		1506
		1507	void
		1508	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1509	PPCODE:
		1510	{
		1511	int fd = s_fileno_croak (fh, 0);
		1512	dREQ;
		1513
		1514	req->type = EIO_FALLOCATE;
		1515	req->sv1 = newSVsv (fh);
		1516	req->int1 = fd;
		1517	req->int2 = mode;
		1518	req->offs = offset;
		1519	req->size = len;
		1520
		1521	REQ_SEND;
		1522	}
		1523
		1524	void
		1525	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1526	PPCODE:
		1527	{
		1528	int fd = s_fileno_croak (fh, 0);
		1529	dREQ;
		1530	#if 0
		1531	/* partially duplicate logic in s_fileno */
		1532	SvGETMAGIC (fh);
		1533
		1534	if (SvROK (fh))
		1535	{
		1536	fh = SvRV (fh);
		1537	SvGETMAGIC (fh);
		1538	}
		1539
		1540	if (SvTYPE (fh) == SVt_PVGV)
		1541	{
		1542	/* perl filehandle */
		1543	PerlIOUnix_refcnt_inc (fd);
		1544	do_close ((GV *)fh, 1);
		1545
		1546	req->type = EIO_CLOSE;
		1547	req->int1 = fd;
		1548	/*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
407	}	1549	}
		1550	else
		1551	#endif
		1552	{
		1553	/* fd number */
		1554	req->type = EIO_DUP2;
		1555	req->int1 = close_fd;
		1556	req->sv2 = newSVsv (fh);
		1557	req->int2 = fd;
		1558	}
408		1559
409	while (started > nthreads)	1560	REQ_SEND;
		1561	}
		1562
		1563	void
		1564	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1565	PPCODE:
		1566	{
		1567	int fd = s_fileno_croak (fh, 0);
		1568	dREQ;
		1569
		1570	req->type = EIO_SEEK;
		1571	req->sv1 = newSVsv (fh);
		1572	req->int1 = fd;
		1573	req->offs = SvVAL64 (offset);
		1574	req->int2 = whence;
		1575
		1576	REQ_SEND;
		1577	}
		1578
		1579	void
		1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
		1581	ALIAS:
		1582	aio_read = EIO_READ
		1583	aio_write = EIO_WRITE
		1584	PPCODE:
		1585	{
		1586	STRLEN svlen;
		1587	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
		1588	char *svptr = SvPVbyte (data, svlen);
		1589	UV len = SvUV (length);
		1590
		1591	if (dataoffset < 0)
		1592	dataoffset += svlen;
		1593
		1594	if (dataoffset < 0 || dataoffset > svlen)
		1595	croak ("dataoffset outside of data scalar");
		1596
		1597	if (ix == EIO_WRITE)
		1598	{
		1599	/* write: check length and adjust. */
		1600	if (!SvOK (length) || len + dataoffset > svlen)
		1601	len = svlen - dataoffset;
		1602	}
		1603	else
		1604	{
		1605	/* read: check type and grow scalar as necessary */
		1606	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1607	svptr = sv_grow (data, len + dataoffset + 1);
		1608	else if (SvCUR (data) < len + dataoffset)
		1609	croak ("length + dataoffset outside of scalar, and cannot grow");
		1610	}
		1611
		1612	{
		1613	dREQ;
		1614
		1615	req->type = ix;
		1616	req->sv1 = newSVsv (fh);
		1617	req->int1 = fd;
		1618	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1619	req->size = len;
		1620	req->sv2 = SvREFCNT_inc (data);
		1621	req->ptr2 = (char *)svptr + dataoffset;
		1622	req->stroffset = dataoffset;
		1623
		1624	if (!SvREADONLY (data))
		1625	{
		1626	SvREADONLY_on (data);
		1627	req->flags |= FLAG_SV2_RO_OFF;
		1628	}
		1629
		1630	REQ_SEND;
		1631	}
		1632	}
		1633
		1634	void
		1635	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
		1636	ALIAS:
		1637	aio_ioctl = EIO_IOCTL
		1638	aio_fcntl = EIO_FCNTL
		1639	PPCODE:
		1640	{
		1641	int fd = s_fileno_croak (fh, 0);
		1642	char *svptr;
		1643
		1644	if (SvPOK (arg) || !SvNIOK (arg))
		1645	{
		1646	STRLEN svlen;
		1647	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1648	#ifdef IOCPARM_LEN
		1649	STRLEN need = IOCPARM_LEN (request);
		1650	#else
		1651	STRLEN need = 256;
		1652	#endif
		1653
		1654	if (svlen < need)
		1655	svptr = SvGROW (arg, need);
		1656	}
		1657	else
		1658	svptr = (char *)SvIV (arg);
		1659
		1660	{
		1661	dREQ;
		1662
		1663	req->type = ix;
		1664	req->sv1 = newSVsv (fh);
		1665	req->int1 = fd;
		1666	req->int2 = (long)request;
		1667	req->sv2 = SvREFCNT_inc (arg);
		1668	req->ptr2 = svptr;
		1669
		1670	REQ_SEND;
		1671	}
		1672	}
		1673
		1674	void
		1675	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1676	ALIAS:
		1677	aio_readlink = EIO_READLINK
		1678	aio_realpath = EIO_REALPATH
		1679	PPCODE:
		1680	{
		1681	dREQ;
		1682
		1683	req->type = ix;
		1684	req_set_path1 (req, pathname);
		1685
		1686	REQ_SEND;
		1687	}
		1688
		1689	void
		1690	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1691	PPCODE:
		1692	{
		1693	int ifd = s_fileno_croak (in_fh , 0);
		1694	int ofd = s_fileno_croak (out_fh, 1);
		1695	dREQ;
		1696
		1697	req->type = EIO_SENDFILE;
		1698	req->sv1 = newSVsv (out_fh);
		1699	req->int1 = ofd;
		1700	req->sv2 = newSVsv (in_fh);
		1701	req->int2 = ifd;
		1702	req->offs = in_offset;
		1703	req->size = length;
		1704
		1705	REQ_SEND;
		1706	}
		1707
		1708	void
		1709	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1710	PPCODE:
		1711	{
		1712	int fd = s_fileno_croak (fh, 0);
		1713	dREQ;
		1714
		1715	req->type = EIO_READAHEAD;
		1716	req->sv1 = newSVsv (fh);
		1717	req->int1 = fd;
		1718	req->offs = offset;
		1719	req->size = length;
		1720
		1721	REQ_SEND;
		1722	}
		1723
		1724	void
		1725	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1726	ALIAS:
		1727	aio_stat = EIO_STAT
		1728	aio_lstat = EIO_LSTAT
		1729	aio_statvfs = EIO_STATVFS
		1730	PPCODE:
		1731	{
		1732	dREQ;
		1733
		1734	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1735
		1736	REQ_SEND;
		1737	}
		1738
		1739	void
		1740	st_xtime ()
		1741	ALIAS:
		1742	st_atime = 0x01
		1743	st_mtime = 0x02
		1744	st_ctime = 0x04
		1745	st_btime = 0x08
		1746	st_xtime = 0x0f
		1747	PPCODE:
		1748	EXTEND (SP, 4);
		1749	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1750	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1751	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1752	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1753
		1754	void
		1755	st_xtimensec ()
		1756	ALIAS:
		1757	st_atimensec = 0x01
		1758	st_mtimensec = 0x02
		1759	st_ctimensec = 0x04
		1760	st_btimensec = 0x08
		1761	st_xtimensec = 0x0f
		1762	st_btimesec = 0x10
		1763	st_gen = 0x20
		1764	PPCODE:
		1765	EXTEND (SP, 4);
		1766	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1767	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1768	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1769	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1770	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1771	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1772
		1773	UV
		1774	major (UV dev)
		1775	ALIAS:
		1776	minor = 1
		1777	CODE:
		1778	RETVAL = ix ? minor (dev) : major (dev);
		1779	OUTPUT:
		1780	RETVAL
		1781
		1782	UV
		1783	makedev (UV maj, UV min)
		1784	CODE:
		1785	RETVAL = makedev (maj, min);
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void
		1790	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1791	PPCODE:
		1792	{
		1793	dREQ;
		1794
		1795	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1796	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1797	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1798
		1799	REQ_SEND;
		1800	}
		1801
		1802	void
		1803	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1804	PPCODE:
		1805	{
		1806	dREQ;
		1807
		1808	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1809	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1810
		1811	REQ_SEND;
		1812	}
		1813
		1814	void
		1815	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1816	PPCODE:
		1817	{
		1818	dREQ;
		1819
		1820	req->int2 = mode;
		1821	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1822
		1823	REQ_SEND;
		1824	}
		1825
		1826	void
		1827	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1828	PPCODE:
		1829	{
		1830	dREQ;
		1831
		1832	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1833	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1834	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1835
		1836	REQ_SEND;
		1837	}
		1838
		1839	void
		1840	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1841	PPCODE:
		1842	{
		1843	dREQ;
		1844
		1845	req->type = EIO_READDIR;
		1846	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1847
		1848	if (flags & EIO_READDIR_DENTS)
		1849	req->int1 |= EIO_READDIR_CUSTOM2;
		1850
		1851	req_set_path1 (req, pathname);
		1852
		1853	REQ_SEND;
		1854	}
		1855
		1856	void
		1857	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1858	PPCODE:
		1859	{
		1860	dREQ;
		1861
		1862	req->type = EIO_MKDIR;
		1863	req->int2 = mode;
		1864	req_set_path1 (req, pathname);
		1865
		1866	REQ_SEND;
		1867	}
		1868
		1869	void
		1870	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1871	ALIAS:
		1872	aio_unlink = EIO_UNLINK
		1873	aio_rmdir = EIO_RMDIR
		1874	aio_readdir = EIO_READDIR
		1875	PPCODE:
		1876	{
		1877	dREQ;
		1878
		1879	req->type = ix;
		1880	req_set_path1 (req, pathname);
		1881
		1882	REQ_SEND;
		1883	}
		1884
		1885	void
		1886	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1887	ALIAS:
		1888	aio_link = EIO_LINK
		1889	aio_symlink = EIO_SYMLINK
		1890	aio_rename = EIO_RENAME
		1891	PPCODE:
		1892	{
		1893	eio_wd wd2 = 0;
		1894	dREQ;
		1895
		1896	req->type = ix;
		1897	req_set_path1 (req, oldpath);
		1898	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1899	req->int3 = (long)wd2;
		1900
		1901	REQ_SEND;
		1902	}
		1903
		1904	void
		1905	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1906	PPCODE:
		1907	{
		1908	eio_wd wd2 = 0;
		1909	dREQ;
		1910
		1911	req->type = EIO_RENAME;
		1912	req_set_path1 (req, oldpath);
		1913	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1914	req->int2 = flags;
		1915	req->int3 = (long)wd2;
		1916
		1917	REQ_SEND;
		1918	}
		1919
		1920	void
		1921	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
		1922	PPCODE:
		1923	{
		1924	dREQ;
		1925
		1926	req->type = EIO_MKNOD;
		1927	req->int2 = (mode_t)mode;
		1928	req->offs = dev;
		1929	req_set_path1 (req, pathname);
		1930
		1931	REQ_SEND;
		1932	}
		1933
		1934	void
		1935	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1936	ALIAS:
		1937	aio_mtouch = EIO_MTOUCH
		1938	aio_msync = EIO_MSYNC
		1939	PPCODE:
		1940	{
		1941	STRLEN svlen;
		1942	char *svptr = SvPVbyte (data, svlen);
		1943	UV len = SvUV (length);
		1944
		1945	if (flags < 0)
		1946	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1947
		1948	if (offset < 0)
		1949	offset += svlen;
		1950
		1951	if (offset < 0 || offset > svlen)
		1952	croak ("offset outside of scalar");
		1953
		1954	if (!SvOK (length) || len + offset > svlen)
		1955	len = svlen - offset;
		1956
		1957	{
		1958	dREQ;
		1959
		1960	req->type = ix;
		1961	req->sv2 = SvREFCNT_inc (data);
		1962	req->ptr2 = (char *)svptr + offset;
		1963	req->size = len;
		1964	req->int1 = flags;
		1965
		1966	REQ_SEND;
		1967	}
		1968	}
		1969
		1970	void
		1971	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1972	PPCODE:
		1973	{
		1974	STRLEN svlen;
		1975	char *svptr = SvPVbyte (data, svlen);
		1976	UV len = SvUV (length);
		1977
		1978	if (offset < 0)
		1979	offset += svlen;
		1980
		1981	if (offset < 0 || offset > svlen)
		1982	croak ("offset outside of scalar");
		1983
		1984	if (!SvOK (length) || len + offset > svlen)
		1985	len = svlen - offset;
		1986
		1987	{
		1988	dREQ;
		1989
		1990	req->type = EIO_MLOCK;
		1991	req->sv2 = SvREFCNT_inc (data);
		1992	req->ptr2 = (char *)svptr + offset;
		1993	req->size = len;
		1994
		1995	REQ_SEND;
		1996	}
		1997	}
		1998
		1999	void
		2000	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		2001	PPCODE:
		2002	{
		2003	dREQ;
		2004
		2005	req->type = EIO_MLOCKALL;
		2006	req->int1 = flags;
		2007
		2008	REQ_SEND;
		2009	}
		2010
		2011	void
		2012	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		2013	PPCODE:
		2014	{
		2015	int fd = s_fileno_croak (fh, 0);
		2016	dREQ;
		2017
		2018	req->type = EIO_CUSTOM;
		2019	req->sv1 = newSVsv (fh);
		2020	req->int1 = fd;
		2021
		2022	req->feed = fiemap;
		2023	#if HAVE_FIEMAP
		2024	/* keep our fingers crossed that the next two types are 64 bit */
		2025	req->offs = start;
		2026	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		2027	req->int2 = flags;
		2028	req->int3 = SvOK (count) ? SvIV (count) : -1;
		2029	#endif
		2030
		2031	REQ_SEND;
		2032	}
		2033
		2034	void
		2035	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		2036	PPCODE:
		2037	{
		2038	char *svptr = 0;
		2039
		2040	sv_clear_foreign (data);
		2041
		2042	if (length) /* known length, directly read into scalar */
		2043	{
		2044	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		2045	svptr = sv_grow (data, length + 1);
		2046	else if (SvCUR (data) < length)
		2047	croak ("length outside of scalar, and cannot grow");
		2048	else
		2049	svptr = SvPVbyte_nolen (data);
		2050	}
		2051
		2052	{
		2053	dREQ;
		2054
		2055	req->type = EIO_SLURP;
		2056	req_set_path1 (req, pathname);
		2057	req->offs = offset;
		2058	req->size = length;
		2059	req->sv2 = SvREFCNT_inc (data);
		2060	req->ptr2 = svptr;
		2061
		2062	if (!SvREADONLY (data))
		2063	{
		2064	SvREADONLY_on (data);
		2065	req->flags |= FLAG_SV2_RO_OFF;
		2066	}
		2067
		2068	REQ_SEND;
		2069	}
		2070	}
		2071
		2072	void
		2073	aio_busy (double delay, SV *callback = &PL_sv_undef)
		2074	PPCODE:
		2075	{
		2076	dREQ;
		2077
		2078	req->type = EIO_BUSY;
		2079	req->nv1 = delay < 0. ? 0. : delay;
		2080
		2081	REQ_SEND;
		2082	}
		2083
		2084	void
		2085	aio_group (SV *callback = &PL_sv_undef)
		2086	PPCODE:
		2087	{
		2088	dREQ;
		2089
		2090	req->type = EIO_GROUP;
		2091
		2092	PUTBACK;
		2093	req_submit (req);
		2094	SPAGAIN;
		2095
		2096	XPUSHs (req_sv (req, aio_grp_stash));
		2097	}
		2098
		2099	void
		2100	aio_nop (SV *callback = &PL_sv_undef)
		2101	ALIAS:
		2102	aio_nop = EIO_NOP
		2103	aio_sync = EIO_SYNC
		2104	PPCODE:
		2105	{
		2106	dREQ;
		2107
		2108	req->type = ix;
		2109
		2110	REQ_SEND;
		2111	}
		2112
		2113	int
		2114	aioreq_pri (int pri = NO_INIT)
		2115	CODE:
		2116	RETVAL = next_pri;
		2117	if (items > 0)
		2118	{
		2119	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		2120	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		2121	next_pri = pri;
		2122	}
		2123	OUTPUT:
		2124	RETVAL
		2125
		2126	void
		2127	aioreq_nice (int nice = 0)
		2128	CODE:
		2129	nice = next_pri - nice;
		2130	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		2131	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		2132	next_pri = nice;
		2133
		2134	void
		2135	flush ()
		2136	CODE:
		2137	while (eio_nreqs ())
410	{	2138	{
411	poll_wait ();	2139	poll_wait ();
412	poll_cb ();	2140	poll_cb ();
413	}	2141	}
414	}
415		2142
416	int	2143	int
417	max_outstanding(nreqs)	2144	poll ()
418	int nreqs
419	PROTOTYPE: $
420	CODE:
421	RETVAL = max_outstanding;
422	max_outstanding = nreqs;
423
424	void
425	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
426	SV * pathname
427	int flags
428	int mode
429	SV * callback
430	PROTOTYPE: $$$;$
431	CODE:	2145	CODE:
432	{
433	aio_req req;
434
435	Newz (0, req, 1, aio_cb);
436
437	if (!req)
438	croak ("out of memory during aio_req allocation");
439
440	req->type = REQ_OPEN;
441	req->data = newSVsv (pathname);
442	req->dataptr = SvPV_nolen (req->data);
443	req->fd = flags;
444	req->mode = mode;
445	req->callback = SvREFCNT_inc (callback);
446
447	send_req (req);
448	}
449
450	void
451	aio_close(fh,callback=&PL_sv_undef)
452	InputStream fh
453	SV * callback
454	PROTOTYPE: $;$
455	ALIAS:
456	aio_close = REQ_CLOSE
457	aio_fsync = REQ_FSYNC
458	aio_fdatasync = REQ_FDATASYNC
459	CODE:
460	{
461	aio_req req;
462
463	Newz (0, req, 1, aio_cb);
464
465	if (!req)
466	croak ("out of memory during aio_req allocation");
467
468	req->type = ix;
469	req->fd = PerlIO_fileno (fh);
470	req->callback = SvREFCNT_inc (callback);
471
472	send_req (req);
473	}
474
475	void
476	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
477	InputStream fh
478	UV offset
479	IV length
480	SV * data
481	IV dataoffset
482	SV * callback
483	PROTOTYPE: $$$$$;$
484	CODE:
485	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
486
487	void
488	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
489	OutputStream fh
490	UV offset
491	IV length
492	SV * data
493	IV dataoffset
494	SV * callback
495	PROTOTYPE: $$$$$;$
496	CODE:
497	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
498
499	void
500	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
501	InputStream fh
502	UV offset
503	IV length
504	SV * callback
505	PROTOTYPE: $$$;$
506	CODE:
507	{
508	aio_req req;
509
510	if (length < 0)
511	croak ("length must not be negative");
512
513	Newz (0, req, 1, aio_cb);
514
515	if (!req)
516	croak ("out of memory during aio_req allocation");
517
518	req->type = REQ_READAHEAD;
519	req->fd = PerlIO_fileno (fh);
520	req->offset = offset;
521	req->length = length;
522	req->callback = SvREFCNT_inc (callback);
523
524	send_req (req);
525	}
526
527	void
528	aio_stat(fh_or_path,callback=&PL_sv_undef)
529	SV * fh_or_path
530	SV * callback
531	ALIAS:
532	aio_stat = REQ_STAT
533	aio_lstat = REQ_LSTAT
534	CODE:
535	{
536	aio_req req;
537
538	Newz (0, req, 1, aio_cb);
539
540	if (!req)
541	croak ("out of memory during aio_req allocation");
542
543	New (0, req->statdata, 1, Stat_t);
544
545	if (!req->statdata)
546	croak ("out of memory during aio_req->statdata allocation");
547
548	if (SvPOK (fh_or_path))
549	{
550	req->type = ix;
551	req->data = newSVsv (fh_or_path);
552	req->dataptr = SvPV_nolen (req->data);
553	}
554	else
555	{
556	req->type = REQ_FSTAT;
557	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
558	}
559
560	req->callback = SvREFCNT_inc (callback);
561
562	send_req (req);
563	}
564
565	void
566	aio_unlink(pathname,callback=&PL_sv_undef)
567	SV * pathname
568	SV * callback
569	CODE:
570	{
571	aio_req req;
572
573	Newz (0, req, 1, aio_cb);
574
575	if (!req)
576	croak ("out of memory during aio_req allocation");
577
578	req->type = REQ_UNLINK;
579	req->data = newSVsv (pathname);
580	req->dataptr = SvPV_nolen (req->data);
581	req->callback = SvREFCNT_inc (callback);
582
583	send_req (req);
584	}
585
586	void
587	flush()
588	PROTOTYPE:
589	CODE:
590	while (nreqs)
591	{
592	poll_wait ();	2146	poll_wait ();
593	poll_cb ();	2147	RETVAL = poll_cb ();
594	}
595
596	void
597	poll()
598	PROTOTYPE:
599	CODE:
600	if (nreqs)
601	{
602	poll_wait ();
603	poll_cb ();
604	}
605
606	int
607	poll_fileno()
608	PROTOTYPE:
609	CODE:
610	RETVAL = respipe [0];
611	OUTPUT:	2148	OUTPUT:
612	RETVAL	2149	RETVAL
613		2150
614	int	2151	int
		2152	poll_fileno ()
		2153	CODE:
		2154	RETVAL = s_epipe_fd (&respipe);
		2155	OUTPUT:
		2156	RETVAL
		2157
		2158	int
615	poll_cb(...)	2159	poll_cb (...)
616	PROTOTYPE:	2160	PROTOTYPE:
617	CODE:	2161	CODE:
618	RETVAL = poll_cb ();	2162	RETVAL = poll_cb ();
619	OUTPUT:	2163	OUTPUT:
620	RETVAL	2164	RETVAL
621		2165
622	void	2166	void
623	poll_wait()	2167	poll_wait ()
		2168	CODE:
		2169	poll_wait ();
		2170
		2171	int
		2172	nreqs ()
		2173	CODE:
		2174	RETVAL = eio_nreqs ();
		2175	OUTPUT:
		2176	RETVAL
		2177
		2178	int
		2179	nready ()
		2180	CODE:
		2181	RETVAL = eio_nready ();
		2182	OUTPUT:
		2183	RETVAL
		2184
		2185	int
		2186	npending ()
		2187	CODE:
		2188	RETVAL = eio_npending ();
		2189	OUTPUT:
		2190	RETVAL
		2191
		2192	int
		2193	nthreads ()
		2194	CODE:
		2195	RETVAL = eio_nthreads ();
		2196	OUTPUT:
		2197	RETVAL
		2198
		2199	int
		2200	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2201	CODE:
		2202	RETVAL = posix_fadvise (fh, offset, length, advice);
		2203	OUTPUT:
		2204	RETVAL
		2205
		2206	IV
		2207	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2208	CODE:
		2209	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2210	OUTPUT:
		2211	RETVAL
		2212
		2213	void
		2214	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2215	PPCODE:
		2216	sv_clear_foreign (scalar);
		2217	{
		2218	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2219	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2220	if (addr == (void *)-1)
		2221	XSRETURN_NO;
		2222
		2223	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2224
		2225	if (!(prot & PROT_WRITE))
		2226	SvREADONLY_on (scalar);
		2227
		2228	XSRETURN_YES;
		2229	}
		2230
		2231	void
		2232	munmap (SV *scalar)
		2233	CODE:
		2234	sv_clear_foreign (scalar);
		2235
		2236	SV *
		2237	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2238	CODE:
		2239	{
		2240	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2241	void *new;
		2242
		2243	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2244	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2245
		2246	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2247
		2248	RETVAL = &PL_sv_no;
		2249
		2250	if (new != (void *)-1)
		2251	{
		2252	RETVAL = new == (void *)mg->mg_ptr
		2253	? newSVpvn ("0 but true", 10)
		2254	: &PL_sv_yes;
		2255
		2256	mg->mg_ptr = (char *)new;
		2257	mg->mg_obj = (SV *)new_length;
		2258
		2259	SvPVX (scalar) = mg->mg_ptr;
		2260	SvCUR_set (scalar, new_length);
		2261	}
		2262	}
		2263	OUTPUT:
		2264	RETVAL
		2265
		2266	int
		2267	madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2268	ALIAS:
		2269	mprotect = 1
		2270	CODE:
		2271	{
		2272	STRLEN svlen;
		2273	void *addr = SvPVbyte (scalar, svlen);
		2274	STRLEN len = SvUV (length);
		2275
		2276	if (offset < 0)
		2277	offset += svlen;
		2278
		2279	if (offset < 0 || offset > svlen)
		2280	croak ("offset outside of scalar");
		2281
		2282	if (!SvOK (length) || len + offset > svlen)
		2283	len = svlen - offset;
		2284
		2285	addr = (void *)(((intptr_t)addr) + offset);
		2286	eio_page_align (&addr, &len);
		2287
		2288	switch (ix)
		2289	{
		2290	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2291	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2292	}
		2293	}
		2294	OUTPUT:
		2295	RETVAL
		2296
		2297	int
		2298	munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
		2299	CODE:
		2300	{
		2301	STRLEN svlen;
		2302	void *addr = SvPVbyte (scalar, svlen);
		2303	size_t len = SvUV (length);
		2304
		2305	if (offset < 0)
		2306	offset += svlen;
		2307
		2308	if (offset < 0 || offset > svlen)
		2309	croak ("offset outside of scalar");
		2310
		2311	if (!SvOK (length) || len + offset > svlen)
		2312	len = svlen - offset;
		2313
		2314	addr = (void *)(((intptr_t)addr) + offset);
		2315	eio_page_align (&addr, &len);
		2316	#if _POSIX_MEMLOCK_RANGE
		2317	RETVAL = munlock (addr, len);
		2318	#else
		2319	RETVAL = EIO_ENOSYS ();
		2320	#endif
		2321	}
		2322	OUTPUT:
		2323	RETVAL
		2324
		2325	int
		2326	mlockall (int flags)
		2327	PROTOTYPE: $;
		2328	CODE:
		2329	RETVAL = eio_mlockall_sync (flags);
		2330	OUTPUT:
		2331	RETVAL
		2332
		2333	int
		2334	munlockall ()
		2335	CODE:
		2336	#if _POSIX_MEMLOCK
		2337	munlockall ();
		2338	#else
		2339	RETVAL = EIO_ENOSYS ();
		2340	#endif
		2341	OUTPUT:
		2342	RETVAL
		2343
		2344	int
		2345	statx (SV8 *pathname, int flags, UV mask)
		2346	CODE:
		2347	{
		2348	/* undocumented, and might go away, and anyway, should use eio_statx */
		2349	SV *wdsv = 0;
		2350	SV *pathsv = 0;
		2351	eio_wd wd = EIO_CWD;
		2352	void *ptr;
		2353	int res;
		2354
		2355	req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
		2356	RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
		2357
		2358	SvREFCNT_dec (pathsv);
		2359	SvREFCNT_dec (wdsv);
		2360	}
		2361	OUTPUT:
		2362	RETVAL
		2363
		2364	U32
		2365	stx_mode ()
624	PROTOTYPE:	2366	PROTOTYPE:
625	CODE:	2367	CODE:
626	if (nreqs)	2368	#if HAVE_STATX
627	poll_wait ();	2369	RETVAL = stx.stx_mode;
		2370	#else
		2371	XSRETURN_UNDEF;
		2372	#endif
		2373	OUTPUT:
		2374	RETVAL
		2375
		2376	#define STATX_OFFSET_mask statx_offsetof (stx_mask)
		2377	#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
		2378	#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
		2379	#define STATX_OFFSET_uid statx_offsetof (stx_uid)
		2380	#define STATX_OFFSET_gid statx_offsetof (stx_gid)
		2381	#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
		2382	#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
		2383	#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
		2384	#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
		2385	#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
		2386	#define STATX_OFFSET_ino statx_offsetof (stx_ino)
		2387	#define STATX_OFFSET_size statx_offsetof (stx_size)
		2388	#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
		2389	#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
		2390	#define STATX_OFFSET_atime statx_offsetof (stx_atime)
		2391	#define STATX_OFFSET_btime statx_offsetof (stx_btime)
		2392	#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
		2393	#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
		2394
		2395	U32
		2396	stx_mask ()
		2397	PROTOTYPE:
		2398	ALIAS:
		2399	stx_mask = STATX_OFFSET_mask
		2400	stx_blksize = STATX_OFFSET_blksize
		2401	stx_nlink = STATX_OFFSET_nlink
		2402	stx_uid = STATX_OFFSET_uid
		2403	stx_gid = STATX_OFFSET_gid
		2404	stx_rdev_major = STATX_OFFSET_rdev_major
		2405	stx_rdev_minor = STATX_OFFSET_rdev_minor
		2406	stx_dev_major = STATX_OFFSET_dev_major
		2407	stx_dev_minor = STATX_OFFSET_dev_minor
		2408	CODE:
		2409	#if HAVE_STATX
		2410	RETVAL = *(__u32 *)((char *)&stx + ix);
		2411	#else
		2412	XSRETURN_UNDEF;
		2413	#endif
		2414	OUTPUT:
		2415	RETVAL
		2416
		2417	VAL64
		2418	stx_attributes ()
		2419	PROTOTYPE:
		2420	ALIAS:
		2421	stx_attributes = STATX_OFFSET_attributes
		2422	stx_ino = STATX_OFFSET_ino
		2423	stx_size = STATX_OFFSET_size
		2424	stx_blocks = STATX_OFFSET_blocks
		2425	stx_attributes_mask = STATX_OFFSET_attributes_mask
		2426	CODE:
		2427	#if HAVE_STATX
		2428	RETVAL = *(__u64 *)((char *)&stx + ix);
		2429	#else
		2430	XSRETURN_UNDEF;
		2431	#endif
		2432	OUTPUT:
		2433	RETVAL
		2434
		2435	NV
		2436	stx_atime ()
		2437	PROTOTYPE:
		2438	ALIAS:
		2439	stx_atime = STATX_OFFSET_atime
		2440	stx_btime = STATX_OFFSET_btime
		2441	stx_ctime = STATX_OFFSET_ctime
		2442	stx_mtime = STATX_OFFSET_mtime
		2443	CODE:
		2444	#if HAVE_STATX
		2445	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2446	RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
		2447	#else
		2448	XSRETURN_UNDEF;
		2449	#endif
		2450	OUTPUT:
		2451	RETVAL
		2452
		2453	VAL64
		2454	stx_atimesec ()
		2455	PROTOTYPE:
		2456	ALIAS:
		2457	stx_atimesec = STATX_OFFSET_atime
		2458	stx_btimesec = STATX_OFFSET_btime
		2459	stx_ctimesec = STATX_OFFSET_ctime
		2460	stx_mtimesec = STATX_OFFSET_mtime
		2461	CODE:
		2462	#if HAVE_STATX
		2463	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2464	RETVAL = ts->tv_sec;
		2465	#else
		2466	XSRETURN_UNDEF;
		2467	#endif
		2468	OUTPUT:
		2469	RETVAL
		2470
		2471	U32
		2472	stx_atimensec ()
		2473	PROTOTYPE:
		2474	ALIAS:
		2475	stx_atimensec = STATX_OFFSET_atime
		2476	stx_btimensec = STATX_OFFSET_btime
		2477	stx_ctimensec = STATX_OFFSET_ctime
		2478	stx_mtimensec = STATX_OFFSET_mtime
		2479	CODE:
		2480	#if HAVE_STATX
		2481	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2482	RETVAL = ts->tv_nsec;
		2483	#else
		2484	RETVAL = 0;
		2485	#endif
		2486	OUTPUT:
		2487	RETVAL
628		2488
629	int	2489	int
630	nreqs()	2490	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2491	CODE:
		2492	{
		2493	#if HAVE_LINUX_SPLICE
		2494	loff_t off_in_, off_out_;
		2495	RETVAL = splice (
		2496	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2497	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2498	length, flags
		2499	);
		2500	#else
		2501	RETVAL = EIO_ENOSYS ();
		2502	#endif
		2503	}
		2504	OUTPUT:
		2505	RETVAL
		2506
		2507	int
		2508	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2509	CODE:
		2510	#if HAVE_LINUX_SPLICE
		2511	RETVAL = tee (rfh, wfh, length, flags);
		2512	#else
		2513	RETVAL = EIO_ENOSYS ();
		2514	#endif
		2515	OUTPUT:
		2516	RETVAL
		2517
		2518	int
		2519	pipesize (aio_rfd rfh, int new_size = -1)
		2520	PROTOTYPE: $;$
		2521	CODE:
		2522	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2523	if (new_size >= 0)
		2524	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2525	else
		2526	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2527	#else
		2528	errno = ENOSYS;
		2529	RETVAL = -1;
		2530	#endif
		2531	OUTPUT:
		2532	RETVAL
		2533
		2534	void
		2535	pipe2 (int flags = 0)
631	PROTOTYPE:	2536	PROTOTYPE: ;$
		2537	PPCODE:
		2538	{
		2539	int fd[2];
		2540	int res;
		2541
		2542	if (flags)
		2543	#if HAVE_PIPE2
		2544	res = pipe2 (fd, flags);
		2545	#else
		2546	res = (errno = ENOSYS, -1);
		2547	#endif
		2548	else
		2549	res = pipe (fd);
		2550
		2551	if (!res)
		2552	{
		2553	EXTEND (SP, 2);
		2554	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2555	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2556	}
		2557	}
		2558
		2559	void
		2560	eventfd (unsigned int initval = 0, int flags = 0)
		2561	PPCODE:
		2562	{
		2563	int fd;
		2564	#if HAVE_EVENTFD
		2565	fd = eventfd (initval, flags);
		2566	#else
		2567	fd = (errno = ENOSYS, -1);
		2568	#endif
		2569
		2570	XPUSHs (newmortalFH (fd, O_RDWR));
		2571	}
		2572
		2573	void
		2574	timerfd_create (int clockid, int flags = 0)
		2575	PPCODE:
		2576	{
		2577	int fd;
		2578	#if HAVE_TIMERFD
		2579	fd = timerfd_create (clockid, flags);
		2580	#else
		2581	fd = (errno = ENOSYS, -1);
		2582	#endif
		2583
		2584	XPUSHs (newmortalFH (fd, O_RDWR));
		2585	}
		2586
		2587	void
		2588	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2589	PPCODE:
		2590	{
		2591	int fd = s_fileno_croak (fh, 0);
		2592	#if HAVE_TIMERFD
		2593	int res;
		2594	struct itimerspec its, ots;
		2595
		2596	ts_set (&its.it_interval, interval);
		2597	ts_set (&its.it_value , value);
		2598	res = timerfd_settime (fd, flags, &its, &ots);
		2599
		2600	if (!res)
		2601	{
		2602	EXTEND (SP, 2);
		2603	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2604	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2605	}
		2606	#else
		2607	errno = ENOSYS;
		2608	#endif
		2609	}
		2610
		2611	void
		2612	timerfd_gettime (SV *fh)
		2613	PPCODE:
		2614	{
		2615	int fd = s_fileno_croak (fh, 0);
		2616	#if HAVE_TIMERFD
		2617	int res;
		2618	struct itimerspec ots;
		2619	res = timerfd_gettime (fd, &ots);
		2620
		2621	if (!res)
		2622	{
		2623	EXTEND (SP, 2);
		2624	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2625	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2626	}
		2627	#else
		2628	errno = ENOSYS;
		2629	#endif
		2630	}
		2631
		2632	UV
		2633	get_fdlimit ()
632	CODE:	2634	CODE:
633	RETVAL = nreqs;	2635	#if HAVE_RLIMITS
		2636	struct rlimit rl;
		2637	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2638	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2639	#endif
		2640	XSRETURN_UNDEF;
634	OUTPUT:	2641	OUTPUT:
635	RETVAL	2642	RETVAL
636		2643
		2644	void
		2645	min_fdlimit (UV limit = 0x7fffffffU)
		2646	CODE:
		2647	{
		2648	#if HAVE_RLIMITS
		2649	struct rlimit rl;
		2650	rlim_t orig_rlim_max;
		2651	UV bit;
		2652
		2653	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2654	goto fail;
		2655
		2656	if (rl.rlim_cur == RLIM_INFINITY)
		2657	XSRETURN_YES;
		2658
		2659	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2660
		2661	if (rl.rlim_cur < limit)
		2662	{
		2663	rl.rlim_cur = limit;
		2664
		2665	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2666	rl.rlim_max = rl.rlim_cur;
		2667	}
		2668
		2669	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2670	XSRETURN_YES;
		2671
		2672	if (errno == EPERM)
		2673	{
		2674	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2675	/* our limit overflows a system-wide limit */
		2676	/* try an adaptive algorithm, but do not lower the hardlimit */
		2677	rl.rlim_max = 0;
		2678	for (bit = 0x40000000U; bit; bit >>= 1)
		2679	{
		2680	rl.rlim_max |= bit;
		2681	rl.rlim_cur = rl.rlim_max;
		2682
		2683	/* nevr decrease the hard limit */
		2684	if (rl.rlim_max < orig_rlim_max)
		2685	break;
		2686
		2687	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2688	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2689	}
		2690
		2691	/* now, raise the soft limit to the max permitted */
		2692	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2693	{
		2694	rl.rlim_cur = rl.rlim_max;
		2695	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2696	errno = EPERM;
		2697	}
		2698	}
		2699	#endif
		2700	fail:
		2701	XSRETURN_UNDEF;
		2702	}
		2703
		2704	void _on_next_submit (SV *cb)
		2705	CODE:
		2706	SvREFCNT_dec (on_next_submit);
		2707	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2708
		2709	PROTOTYPES: DISABLE
		2710
		2711	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2712
		2713	BOOT:
		2714	{
		2715	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2716	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2717	}
		2718
		2719	void
		2720	DESTROY (SV *self)
		2721	CODE:
		2722	{
		2723	aio_wd wd = SvAIO_WD (self);
		2724	#if HAVE_AT
		2725	{
		2726	SV *callback = &PL_sv_undef;
		2727	dREQ; /* clobbers next_pri :/ */
		2728	next_pri = req->pri; /* restore next_pri */
		2729	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2730	req->type = EIO_WD_CLOSE;
		2731	req->wd = wd;
		2732	REQ_SEND;
		2733	}
		2734	#else
		2735	eio_wd_close_sync (wd);
		2736	#endif
		2737	}
		2738
		2739	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2740
		2741	void
		2742	cancel (aio_req_ornot req)
		2743	CODE:
		2744	eio_cancel (req);
		2745
		2746	void
		2747	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2748	PPCODE:
		2749	{
		2750	if (GIMME_V != G_VOID)
		2751	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2752
		2753	if (items > 1)
		2754	{
		2755	SV *cb_cv = get_cb (callback);
		2756
		2757	SvREFCNT_dec (req->callback);
		2758	req->callback = SvREFCNT_inc (cb_cv);
		2759	}
		2760	}
		2761
		2762	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2763
		2764	void
		2765	add (aio_req grp, ...)
		2766	PPCODE:
		2767	{
		2768	int i;
		2769
		2770	if (grp->int1 == 2)
		2771	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2772
		2773	for (i = 1; i < items; ++i )
		2774	{
		2775	aio_req req;
		2776
		2777	if (GIMME_V != G_VOID)
		2778	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2779
		2780	req = SvAIO_REQ (ST (i));
		2781
		2782	if (req)
		2783	eio_grp_add (grp, req);
		2784	}
		2785	}
		2786
		2787	void
		2788	cancel_subs (aio_req_ornot req)
		2789	CODE:
		2790	req_cancel_subs (req);
		2791
		2792	void
		2793	result (aio_req grp, ...)
		2794	CODE:
		2795	{
		2796	int i;
		2797	AV *av;
		2798
		2799	grp->errorno = errno;
		2800
		2801	av = newAV ();
		2802	av_extend (av, items - 1);
		2803
		2804	for (i = 1; i < items; ++i )
		2805	av_push (av, newSVsv (ST (i)));
		2806
		2807	SvREFCNT_dec (grp->sv1);
		2808	grp->sv1 = (SV *)av;
		2809	}
		2810
		2811	void
		2812	errno (aio_req grp, int errorno = errno)
		2813	CODE:
		2814	grp->errorno = errorno;
		2815
		2816	void
		2817	limit (aio_req grp, int limit)
		2818	CODE:
		2819	eio_grp_limit (grp, limit);
		2820
		2821	void
		2822	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2823	CODE:
		2824	{
		2825	SvREFCNT_dec (grp->sv2);
		2826	grp->sv2 = newSVsv (callback);
		2827	grp->feed = aio_grp_feed;
		2828
		2829	if (grp->int2 <= 0)
		2830	grp->int2 = 2;
		2831
		2832	eio_grp_limit (grp, grp->int2);
		2833	}
		2834

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