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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.269 by root, Thu Nov 29 21:48:44 2018 UTC

1	#define PERL_NO_GET_CONTEXT	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"
6		8
		9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
		12
		13	#include <stddef.h>
		14	#include <stdlib.h>
		15	#include <errno.h>
7	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
8	#include <sys/stat.h>	18	#include <sys/stat.h>
9	#include <unistd.h>	19	#include <limits.h>
10	#include <fcntl.h>	20	#include <fcntl.h>
11	#include <signal.h>
12	#include <sched.h>	21	#include <sched.h>
13	#include <endian.h>
14		22
15	#include <pthread.h>	23	/* the incompetent fool that created musl keeps __linux__, refuses
16	#include <sys/syscall.h>	24	* to implement any linux standard apis, and also has no way to test
		25	* for his broken iplementation. don't complain to me if this fails
		26	* for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
17		36
18	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	37	/* perl namespace pollution */
19	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */	38	#undef VERSION
20	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21		39
22	#if __i386 || __amd64	40	/* perl stupidly overrides readdir and maybe others */
23	# define STACKSIZE ( 256 * sizeof (long))	41	/* with thread-unsafe versions, imagine that :( */
24	#elif __ia64	42	#undef readdir
25	# define STACKSIZE (8192 * sizeof (long))	43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79	#undef utime
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
26	#else	84	#else
27	# define STACKSIZE ( 512 * sizeof (long))	85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "config.h"
		110
		111	#if HAVE_SYS_MKDEV_H
		112	# include <sys/mkdev.h>
		113	#elif HAVE_SYS_SYSMACROS_H
		114	# include <sys/sysmacros.h>
		115	#endif
		116
		117	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		118	# include <sys/mman.h>
		119	#endif
		120
		121	#if HAVE_ST_XTIMENSEC
		122	# define ATIMENSEC PL_statcache.st_atimensec
		123	# define MTIMENSEC PL_statcache.st_mtimensec
		124	# define CTIMENSEC PL_statcache.st_ctimensec
		125	#elif HAVE_ST_XTIMESPEC
		126	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		127	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		128	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		129	#else
		130	# define ATIMENSEC 0
		131	# define MTIMENSEC 0
		132	# define CTIMENSEC 0
		133	#endif
		134
		135	#if HAVE_ST_BIRTHTIMENSEC
		136	# define BTIMESEC PL_statcache.st_birthtime
		137	# define BTIMENSEC PL_statcache.st_birthtimensec
		138	#elif HAVE_ST_BIRTHTIMESPEC
		139	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		140	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		141	#else
		142	# define BTIMESEC 0
		143	# define BTIMENSEC 0
		144	#endif
		145
		146	#if HAVE_ST_GEN
		147	# define ST_GEN PL_statcache.st_gen
		148	#else
		149	# define ST_GEN 0
		150	#endif
		151
		152	#include "schmorp.h"
		153
		154	#if HAVE_EVENTFD
		155	# include <sys/eventfd.h>
		156	#endif
		157
		158	#if HAVE_TIMERFD
		159	# include <sys/timerfd.h>
		160	#endif
		161
		162	#if HAVE_RLIMITS
		163	#include <sys/time.h>
		164	#include <sys/resource.h>
		165	#endif
		166
		167	typedef SV SV8; /* byte-sv, used for argument-checking */
		168	typedef int aio_rfd; /* read file desriptor */
		169	typedef int aio_wfd; /* write file descriptor */
		170
		171	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		172
		173	#define EIO_REQ_MEMBERS \
		174	SV *callback; \
		175	SV *sv1, *sv2; \
		176	SV *sv3, *sv4; \
		177	STRLEN stroffset; \
		178	SV *self;
		179
		180	#define EIO_NO_WRAPPERS 1
		181
		182	#include "libeio/eio.h"
		183
		184	static int req_invoke (eio_req *req);
		185	#define EIO_FINISH(req) req_invoke (req)
		186	static void req_destroy (eio_req *grp);
		187	#define EIO_DESTROY(req) req_destroy (req)
		188
		189	#include "libeio/eio.c"
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#if !HAVE_POSIX_MADVISE
		196	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		197	#endif
		198
		199	#ifndef MAP_ANONYMOUS
		200	# ifdef MAP_ANON
		201	# define MAP_ANONYMOUS MAP_ANON
		202	# else
		203	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28	#endif	204	# endif
		205	#endif
		206
		207	#ifndef makedev
		208	# define makedev(maj,min) (((maj) << 8) | (min))
		209	#endif
		210	#ifndef major
		211	# define major(dev) ((dev) >> 8)
		212	#endif
		213	#ifndef minor
		214	# define minor(dev) ((dev) & 0xff)
		215	#endif
		216
		217	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
		218	#ifdef __sun
		219	# undef PAGESIZE
		220	#endif
		221
		222	#if PAGESIZE <= 0
		223	# define PAGESIZE sysconf (_SC_PAGESIZE)
		224	#endif
		225
		226	/*****************************************************************************/
		227
		228	#if !_POSIX_MAPPED_FILES
		229	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		230	# define munmap(addr,length) EIO_ENOSYS ()
		231	#endif
		232
		233	#if !_POSIX_MEMORY_PROTECTION
		234	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		235	#endif
		236
		237	#if !MREMAP_MAYMOVE
		238	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		239	#endif
		240
		241	#define FOREIGN_MAGIC PERL_MAGIC_ext
		242
		243	static int ecb_cold
		244	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		245	{
		246	int old_errno = errno;
		247	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		248	errno = old_errno;
		249
		250	mg->mg_obj = 0; /* just in case */
		251
		252	SvREADONLY_off (sv);
		253
		254	if (SvPVX (sv) != mg->mg_ptr)
		255	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		256
		257	SvCUR_set (sv, 0);
		258	SvPVX (sv) = 0;
		259	SvOK_off (sv);
		260
		261	return 0;
		262	}
		263
		264	static MGVTBL mmap_vtbl = {
		265	0, 0, 0, 0, mmap_free
		266	};
		267
		268	static int ecb_cold
		269	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		270	{
		271	free (mg->mg_ptr);
		272	mg->mg_obj = 0; /* just in case */
		273
		274	SvREADONLY_off (sv);
		275
		276	if (SvPVX (sv) != mg->mg_ptr)
		277	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		278
		279	SvCUR_set (sv, 0);
		280	SvPVX (sv) = 0;
		281	SvOK_off (sv);
		282
		283	return 0;
		284	}
		285
		286	static MGVTBL sysfree_vtbl = {
		287	0, 0, 0, 0, sysfree_free
		288	};
		289
		290	/*****************************************************************************/
		291
		292	/* helper: set scalar to foreign ptr with custom free */
		293	static void
		294	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		295	{
		296	sv_force_normal (sv);
		297
		298	/* we store the length in mg_obj, as namlen is I32 :/ */
		299	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		300	->mg_obj = (SV *)length;
		301
		302	SvUPGRADE (sv, SVt_PV); /* nop... */
		303
		304	if (SvLEN (sv))
		305	Safefree (SvPVX (sv));
		306
		307	SvPVX (sv) = (char *)addr;
		308	SvCUR_set (sv, length);
		309	SvLEN_set (sv, 0);
		310	SvPOK_only (sv);
		311	}
		312
		313	static void
		314	sv_clear_foreign (SV *sv)
		315	{
		316	/* todo: iterate over magic and only free ours, but of course */
		317	/* the perl5porters will call that (correct) behaviour buggy */
		318	sv_unmagic (sv, FOREIGN_MAGIC);
		319	}
		320
		321	/*****************************************************************************/
		322
		323	/* defines all sorts of constants to 0 unless they are already defined */
		324	/* also provides const_iv_ and const_niv_ macros for them */
		325	#include "def0.h"
		326
		327	/*****************************************************************************/
		328
		329	static void
		330	fiemap (eio_req *req)
		331	{
		332	req->result = -1;
		333
		334	#if HAVE_FIEMAP
		335	/* assume some c99 */
		336	struct fiemap *fiemap = 0;
		337	size_t end_offset;
		338	int count = req->int3;
		339
		340	req->flags |= EIO_FLAG_PTR1_FREE;
		341
		342	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		343	/* increase in 3.5kb steps */
		344	if (count < 0)
		345	count = 8;
		346
		347	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		348	errno = ENOMEM;
		349	if (!fiemap)
		350	return;
		351
		352	req->ptr1 = fiemap;
		353
		354	fiemap->fm_start = req->offs;
		355	fiemap->fm_length = req->size;
		356	fiemap->fm_flags = req->int2;
		357	fiemap->fm_extent_count = count;
		358
		359	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		360	return;
		361
		362	if (req->int3 >= 0 /* not autosizing */
		363	|| !fiemap->fm_mapped_extents /* no more extents */
		364	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		365	goto done;
		366
		367	/* else we have to loop -
		368	* it would be tempting (actually I tried that first) to just query the
		369	* number of extents needed, but linux often feels like not returning all
		370	* extents, without telling us it left any out. this complicates
		371	* this quite a bit.
		372	*/
		373
		374	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		375
		376	for (;;)
		377	{
		378	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		379	char scratch[3072];
		380	struct fiemap *incmap = (struct fiemap *)scratch;
		381
		382	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		383	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		384	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		385	incmap->fm_flags = fiemap->fm_flags;
		386	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		387
		388	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		389	return;
		390
		391	if (!incmap->fm_mapped_extents)
		392	goto done;
		393
		394	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		395	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		396	errno = ENOMEM;
		397	if (!fiemap)
		398	return;
		399
		400	req->ptr1 = fiemap;
		401
		402	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		403	{
		404	struct fiemap_extent *e = incmap->fm_extents + count;
		405
		406	if (e->fe_logical + e->fe_length >= end_offset)
		407	goto done;
		408
		409	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		410
		411	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		412	goto done;
		413
		414	}
		415	}
		416
		417	done:
		418	req->result = 0;
		419
		420	#else
		421	errno = ENOSYS;
		422	#endif
		423	}
		424
		425	/*****************************************************************************/
		426
		427	static int close_fd; /* dummy fd to close fds via dup2 */
29		428
30	enum {	429	enum {
31	REQ_QUIT,	430	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	};	431	};
37		432
38	typedef struct aio_cb {
39	struct aio_cb *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;	433	typedef eio_req *aio_req;
		434	typedef eio_req *aio_req_ornot;
		435	typedef eio_wd aio_wd;
57		436
58	static int started;	437	static SV *on_next_submit;
59	static int nreqs;	438	static int next_pri = EIO_PRI_DEFAULT;
60	static int reqpipe[2], respipe[2];	439	static int max_outstanding;
61		440
62	static aio_req qs, qe; /* queue start, queue end */	441	static s_epipe respipe;
63		442
64	static void *aio_proc(void *arg);	443	static void req_destroy (aio_req req);
		444	static void req_cancel (aio_req req);
65		445
66	static void	446	static void
67	start_thread (void)	447	want_poll (void)
68	{	448	{
69	sigset_t fullsigset, oldsigset;	449	/* write a dummy byte to the pipe so fh becomes ready */
70	pthread_t tid;	450	s_epipe_signal (&respipe);
71	pthread_attr_t attr;
72
73	pthread_attr_init (&attr);
74	pthread_attr_setstacksize (&attr, STACKSIZE);
75	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77	sigfillset (&fullsigset);
78	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81	started++;
82
83	sigprocmask (SIG_SETMASK, &oldsigset, 0);
84	}	451	}
85		452
86	static void	453	static void
87	send_reqs (void)	454	done_poll (void)
88	{	455	{
89	/* this write is atomic */	456	/* read any signals sent by the worker threads */
90	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)	457	s_epipe_drain (&respipe);
		458	}
		459
		460	/* must be called at most once */
		461	static SV *
		462	req_sv (aio_req req, HV *stash)
		463	{
		464	if (!req->self)
91	{	465	{
92	qs = qs->next;	466	req->self = (SV *)newHV ();
93	if (!qs) qe = 0;	467	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
94	}	468	}
		469
		470	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		471	}
		472
		473	static SV *
		474	newSVaio_wd (aio_wd wd)
		475	{
		476	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		477	}
		478
		479	static aio_req
		480	SvAIO_REQ (SV *sv)
		481	{
		482	MAGIC *mg;
		483
		484	if (!SvROK (sv)
		485	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		486	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		487	&& SvSTASH (SvRV (sv)) != aio_req_stash
		488	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		489	croak ("object of class IO::AIO::REQ expected");
		490
		491	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		492
		493	return mg ? (aio_req)mg->mg_ptr : 0;
		494	}
		495
		496	static aio_wd
		497	SvAIO_WD (SV *sv)
		498	{
		499	if (!SvROK (sv)
		500	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		501	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		502	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		503
		504	return (aio_wd)(long)SvIVX (SvRV (sv));
		505	}
		506
		507	static SV *
		508	newmortalFH (int fd, int flags)
		509	{
		510	if (fd < 0)
		511	return &PL_sv_undef;
		512
		513	GV *gv = (GV *)sv_newmortal ();
		514	char sym[64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		518	gv_init (gv, aio_stash, sym, symlen, 0);
		519
		520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	fd
		526	);
		527
		528	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		529	? (SV *)gv : &PL_sv_undef;
95	}	530	}
96		531
97	static void	532	static void
98	send_req (aio_req req)	533	aio_grp_feed (aio_req grp)
99	{	534	{
100	nreqs++;	535	if (grp->sv2 && SvOK (grp->sv2))
101	req->next = 0;
102
103	if (qe)
104	{	536	{
105	qe->next = req;	537	dSP;
106	qe = req;	538
		539	ENTER;
		540	SAVETMPS;
		541	PUSHMARK (SP);
		542	XPUSHs (req_sv (grp, aio_grp_stash));
		543	PUTBACK;
		544	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		545	SPAGAIN;
		546	FREETMPS;
		547	LEAVE;
107	}	548	}
108	else
109	qe = qs = req;
110
111	send_reqs ();
112	}	549	}
113		550
114	static void	551	static void
115	end_thread (void)	552	req_submit (eio_req *req)
116	{	553	{
117	aio_req req;	554	eio_submit (req);
118	New (0, req, 1, aio_cb);
119	req->type = REQ_QUIT;
120		555
121	send_req (req);	556	if (expect_false (on_next_submit))
122	}
123
124	static void
125	read_write (pTHX_
126	int dowrite, int fd, off_t offset, size_t length,
127	SV *data, STRLEN dataoffset, SV *callback)
128	{
129	aio_req req;
130	STRLEN svlen;
131	char *svptr = SvPV (data, svlen);
132
133	SvUPGRADE (data, SVt_PV);
134	SvPOK_on (data);
135
136	if (dataoffset < 0)
137	dataoffset += svlen;
138
139	if (dataoffset < 0 || dataoffset > svlen)
140	croak ("data offset outside of string");
141
142	if (dowrite)
143	{	557	{
144	/* write: check length and adjust. */	558	dSP;
145	if (length < 0 || length + dataoffset > svlen)	559	SV *cb = sv_2mortal (on_next_submit);
146	length = svlen - dataoffset;	560
		561	on_next_submit = 0;
		562
		563	PUSHMARK (SP);
		564	PUTBACK;
		565	call_sv (cb, G_DISCARD | G_EVAL);
147	}	566	}
148	else	567	}
		568
		569	static int
		570	req_invoke (eio_req *req)
		571	{
		572	if (req->flags & FLAG_SV2_RO_OFF)
		573	SvREADONLY_off (req->sv2);
		574
		575	if (!EIO_CANCELLED (req) && req->callback)
149	{	576	{
150	/* read: grow scalar as necessary */
151	svptr = SvGROW (data, length + dataoffset);
152	}
153
154	if (length < 0)
155	croak ("length must not be negative");
156
157	Newz (0, req, 1, aio_cb);
158
159	if (!req)
160	croak ("out of memory during aio_req allocation");
161
162	req->type = dowrite ? REQ_WRITE : REQ_READ;
163	req->fd = fd;
164	req->offset = offset;
165	req->length = length;
166	req->data = SvREFCNT_inc (data);
167	req->dataptr = (char *)svptr + dataoffset;
168	req->callback = SvREFCNT_inc (callback);
169
170	send_req (req);
171	}
172
173	static void
174	poll_wait ()
175	{
176	fd_set rfd;
177	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);
179
180	select (respipe[0] + 1, &rfd, 0, 0, 0);
181	}
182
183	static int
184	poll_cb (pTHX)
185	{
186	dSP;	577	dSP;
187	int count = 0;	578	static SV *sv_result_cache; /* caches the result integer SV */
188	aio_req req;	579	SV *sv_result;
189		580
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	581	ENTER;
191	{	582	SAVETMPS;
192	nreqs--;	583	PUSHMARK (SP);
		584	EXTEND (SP, 1);
193		585
194	if (req->type == REQ_QUIT)	586	/* do not recreate the result IV from scratch each time */
195	started--;	587	if (expect_true (sv_result_cache))
		588	{
		589	sv_result = sv_result_cache; sv_result_cache = 0;
		590	SvIV_set (sv_result, req->result);
		591	SvIOK_only (sv_result);
		592	}
196	else	593	else
197	{	594	{
198	int errorno = errno;
199	errno = req->errorno;
200
201	if (req->type == REQ_READ)
202	SvCUR_set (req->data, req->dataoffset
203	+ req->result > 0 ? req->result : 0);
204
205	if (req->data)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}
216
217	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	595	sv_result = newSViv (req->result);
219		596	SvREADONLY_on (sv_result);
220	if (req->type == REQ_OPEN)
221	{
222	/* convert fd to fh */
223	SV *fh;
224
225	PUTBACK;
226	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
227	SPAGAIN;
228
229	fh = POPs;
230
231	PUSHMARK (SP);
232	XPUSHs (fh);
233	}
234
235	PUTBACK;
236	call_sv (req->callback, G_VOID | G_EVAL);
237	SPAGAIN;
238
239	if (req->callback)
240	SvREFCNT_dec (req->callback);
241
242	errno = errorno;
243	count++;
244	}	597	}
245
246	Safefree (req);
247	}
248
249	if (qs)
250	send_reqs ();
251
252	return count;
253	}
254
255	static void *
256	aio_proc (void *thr_arg)
257	{
258	aio_req req;
259
260	/* then loop */
261	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262	{
263	errno = 0; /* strictly unnecessary */
264		598
265	switch (req->type)	599	switch (req->type)
266	{	600	{
267	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	601	case EIO_WD_OPEN:
268	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	602	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
269	#if SYS_readahead	603	break;
270	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
271	#else
272	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
273	#endif
274		604
275	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	605	case EIO_READDIR:
276	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	606	{
277	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	607	SV *rv = &PL_sv_undef;
278		608
279	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	609	if (req->result >= 0)
280	case REQ_CLOSE: req->result = close (req->fd); break;	610	{
281	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	611	int i;
		612	char *names = (char *)req->ptr2;
		613	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		614	AV *av = newAV ();
282		615
283	case REQ_FSYNC: req->result = fsync (req->fd); break;	616	av_extend (av, req->result - 1);
284	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285		617
		618	for (i = 0; i < req->result; ++i)
		619	{
		620	if (req->int1 & EIO_READDIR_DENTS)
		621	{
		622	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		623
		624	if (req->int1 & EIO_READDIR_CUSTOM2)
		625	{
		626	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		627	AV *avent = newAV ();
		628
		629	av_extend (avent, 2);
		630
		631	if (!sv_type [ent->type])
		632	{
		633	sv_type [ent->type] = newSViv (ent->type);
		634	SvREADONLY_on (sv_type [ent->type]);
		635	}
		636
		637	av_store (avent, 0, namesv);
		638	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		639	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		640
		641	av_store (av, i, newRV_noinc ((SV *)avent));
		642	}
		643	else
		644	av_store (av, i, namesv);
		645
		646	++ent;
		647	}
		648	else
		649	{
		650	SV *name = newSVpv (names, 0);
		651	av_store (av, i, name);
		652	names += SvCUR (name) + 1;
		653	}
		654	}
		655
		656	rv = sv_2mortal (newRV_noinc ((SV *)av));
		657	}
		658
		659	PUSHs (rv);
		660
		661	if (req->int1 & EIO_READDIR_CUSTOM1)
		662	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		663	}
		664	break;
		665
		666	case EIO_OPEN:
		667	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		668	break;
		669
		670	case EIO_STATVFS:
		671	case EIO_FSTATVFS:
		672	{
		673	SV *rv = &PL_sv_undef;
		674
		675	#ifndef _WIN32
		676	if (req->result >= 0)
		677	{
		678	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		679	HV *hv = newHV ();
		680	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		681	* chooses to make it a struct.
		682	*/
		683	unsigned long fsid = 0;
		684	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		685
		686	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		687
		688	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		689	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		690	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		691	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		692	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		693	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		694	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		695	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		696	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		697	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		698	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		699	}
		700	#endif
		701
		702	PUSHs (rv);
		703	}
		704
		705	break;
		706
		707	case EIO_GROUP:
		708	req->int1 = 2; /* mark group as finished */
		709
		710	if (req->sv1)
		711	{
		712	int i;
		713	AV *av = (AV *)req->sv1;
		714
		715	EXTEND (SP, AvFILL (av) + 1);
		716	for (i = 0; i <= AvFILL (av); ++i)
		717	PUSHs (*av_fetch (av, i, 0));
		718	}
		719	break;
		720
		721	case EIO_NOP:
		722	case EIO_BUSY:
		723	break;
		724
		725	case EIO_READLINK:
		726	case EIO_REALPATH:
		727	if (req->result > 0)
		728	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		729	break;
		730
		731	case EIO_STAT:
		732	case EIO_LSTAT:
		733	case EIO_FSTAT:
		734	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		735
		736	if (!(PL_laststatval = req->result))
		737	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		738	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		739
		740	PUSHs (sv_result);
		741	break;
		742
		743	case EIO_SEEK:
		744	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		745	break;
		746
		747	case EIO_READ:
		748	{
		749	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		750	*SvEND (req->sv2) = 0;
		751	SvPOK_only (req->sv2);
		752	SvSETMAGIC (req->sv2);
		753	PUSHs (sv_result);
		754	}
		755	break;
		756
		757	case EIO_SLURP:
		758	{
		759	if (req->result >= 0)
		760	{
		761	/* if length was originally not known, we steal the malloc'ed memory */
		762	if (req->flags & EIO_FLAG_PTR2_FREE)
		763	{
		764	req->flags &= ~EIO_FLAG_PTR2_FREE;
		765	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		766	}
		767	else
		768	{
		769	SvCUR_set (req->sv2, req->result);
		770	*SvEND (req->sv2) = 0;
		771	SvPOK_only (req->sv2);
		772	}
		773
		774	SvSETMAGIC (req->sv2);
		775	}
		776
		777	PUSHs (sv_result);
		778	}
		779	break;
		780
286	case REQ_QUIT:	781	case EIO_CUSTOM:
287	write (respipe[1], (void *)&req, sizeof (req));	782	if (req->feed == fiemap)
288	return 0;	783	{
		784	#if HAVE_FIEMAP
		785	if (!req->result)
		786	{
		787	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		788
		789	if (fiemap->fm_extent_count)
		790	{
		791	AV *av = newAV ();
		792	int i;
		793
		794	while (fiemap->fm_mapped_extents)
		795	{
		796	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		797	AV *ext_av = newAV ();
		798
		799	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		800	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		801	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		802	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		803
		804	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		805	}
		806
		807	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		808	}
		809	else
		810	{
		811	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		812	PUSHs (sv_result);
		813	}
		814	}
		815	#endif
		816	}
		817	else
		818	PUSHs (sv_result);
		819	break;
		820
		821	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		822	if (req->result > 0)
		823	SvIV_set (sv_result, 0);
		824	/* FALLTHROUGH */
289		825
290	default:	826	default:
291	req->result = ENOSYS;	827	PUSHs (sv_result);
292	break;	828	break;
293	}	829	}
294		830
295	req->errorno = errno;	831	errno = req->errorno;
296	write (respipe[1], (void *)&req, sizeof (req));	832
		833	PUTBACK;
		834	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		835	SPAGAIN;
		836
		837	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		838	SvREFCNT_dec (sv_result);
		839	else
		840	sv_result_cache = sv_result;
		841
		842	FREETMPS;
		843	LEAVE;
		844
		845	PUTBACK;
297	}	846	}
298		847
		848	return !!SvTRUE (ERRSV);
		849	}
		850
		851	static void
		852	req_destroy (aio_req req)
		853	{
		854	if (req->self)
		855	{
		856	sv_unmagic (req->self, PERL_MAGIC_ext);
		857	SvREFCNT_dec (req->self);
		858	}
		859
		860	SvREFCNT_dec (req->sv1);
		861	SvREFCNT_dec (req->sv2);
		862	SvREFCNT_dec (req->sv3);
		863	SvREFCNT_dec (req->sv4);
		864	SvREFCNT_dec (req->callback);
		865
		866	free (req);
		867	}
		868
		869	static void
		870	req_cancel_subs (aio_req grp)
		871	{
		872	if (grp->type != EIO_GROUP)
		873	return;
		874
		875	SvREFCNT_dec (grp->sv2);
		876	grp->sv2 = 0;
		877
		878	eio_grp_cancel (grp);
		879	}
		880
		881	static void ecb_cold
		882	create_respipe (void)
		883	{
		884	if (s_epipe_renew (&respipe))
		885	croak ("IO::AIO: unable to initialize result pipe");
		886	}
		887
		888	static void
		889	poll_wait (void)
		890	{
		891	while (eio_nreqs ())
		892	{
		893	int size;
		894
		895	X_LOCK (EIO_POOL->reslock);
		896	size = EIO_POOL->res_queue.size;
		897	X_UNLOCK (EIO_POOL->reslock);
		898
		899	if (size)
		900	return;
		901
		902	etp_maybe_start_thread (EIO_POOL);
		903
		904	s_epipe_wait (&respipe);
		905	}
		906	}
		907
		908	static int
		909	poll_cb (void)
		910	{
		911	for (;;)
		912	{
		913	int res = eio_poll ();
		914
		915	if (res > 0)
		916	croak (0);
		917
		918	if (!max_outstanding || max_outstanding > eio_nreqs ())
		919	return res;
		920
		921	poll_wait ();
		922	}
		923	}
		924
		925	static void ecb_cold
		926	reinit (void)
		927	{
		928	create_respipe ();
		929
		930	if (eio_init (want_poll, done_poll) < 0)
		931	croak ("IO::AIO: unable to initialise eio library");
		932	}
		933
		934	/*****************************************************************************/
		935
		936	static SV *
		937	get_cb (SV *cb_sv)
		938	{
		939	SvGETMAGIC (cb_sv);
		940	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		941	}
		942
		943	static aio_req ecb_noinline
		944	dreq (SV *callback)
		945	{
		946	SV *cb_cv;
		947	aio_req req;
		948	int req_pri = next_pri;
		949	next_pri = EIO_PRI_DEFAULT;
		950
		951	cb_cv = get_cb (callback);
		952
		953	req = calloc (sizeof (*req), 1);
		954	if (!req)
		955	croak ("out of memory during eio_req allocation");
		956
		957	req->callback = SvREFCNT_inc (cb_cv);
		958	req->pri = req_pri;
		959
299	return 0;	960	return req;
300	}	961	}
		962
		963	#define dREQ \
		964	aio_req req = dreq (callback); \
		965
		966	#define REQ_SEND \
		967	PUTBACK; \
		968	req_submit (req); \
		969	SPAGAIN; \
		970	\
		971	if (GIMME_V != G_VOID) \
		972	XPUSHs (req_sv (req, aio_req_stash));
		973
		974	ecb_inline void
		975	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		976	{
		977	if (expect_false (SvROK (path)))
		978	{
		979	SV *rv = SvRV (path);
		980	SV *wdob;
		981
		982	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		983	{
		984	path = AvARRAY (rv)[1];
		985	wdob = AvARRAY (rv)[0];
		986
		987	if (SvOK (wdob))
		988	{
		989	*wd = SvAIO_WD (wdob);
		990	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		991	}
		992	else
		993	*wd = EIO_INVALID_WD;
		994	}
		995	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		996	{
		997	*wd = (aio_wd)(long)SvIVX (rv);
		998	*wdsv = SvREFCNT_inc_NN (rv);
		999	*ptr = ".";
		1000	return; /* path set to "." */
		1001	}
		1002	else
		1003	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		1004	}
		1005
		1006	*pathsv = newSVsv (path);
		1007	*ptr = SvPVbyte_nolen (*pathsv);
		1008	}
		1009
		1010	static void ecb_noinline
		1011	req_set_path1 (aio_req req, SV *path)
		1012	{
		1013	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		1014	}
		1015
		1016	static void ecb_noinline
		1017	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		1018	{
		1019	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1020
		1021	switch (SvTYPE (rv))
		1022	{
		1023	case SVt_PVIO:
		1024	case SVt_PVLV:
		1025	case SVt_PVGV:
		1026	req->type = type_fh;
		1027	req->sv1 = newSVsv (fh_or_path);
		1028	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1029	break;
		1030
		1031	default:
		1032	req->type = type_path;
		1033	req_set_path1 (req, fh_or_path);
		1034	break;
		1035	}
		1036	}
		1037
		1038	/*****************************************************************************/
		1039
		1040	static void
		1041	ts_set (struct timespec *ts, NV value)
		1042	{
		1043	ts->tv_sec = value;
		1044	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1045	}
		1046
		1047	static NV
		1048	ts_get (const struct timespec *ts)
		1049	{
		1050	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1051	}
		1052
		1053	/*****************************************************************************/
		1054
		1055	XS(boot_IO__AIO) ecb_cold;
301		1056
302	MODULE = IO::AIO PACKAGE = IO::AIO	1057	MODULE = IO::AIO PACKAGE = IO::AIO
303		1058
		1059	PROTOTYPES: ENABLE
		1060
304	BOOT:	1061	BOOT:
305	{	1062	{
306	if (pipe (reqpipe) || pipe (respipe))	1063	static const struct {
307	croak ("unable to initialize request or result pipe");	1064	const char *name;
		1065	IV iv;
		1066	} *civ, const_iv[] = {
		1067	# define const_niv(name, value) { # name, (IV) value },
		1068	# define const_iv(name) { # name, (IV) name },
		1069	# define const_eio(name) { # name, (IV) EIO_ ## name },
308		1070
309	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	1071	/* you have to re-run ./gendef0 after adding/removing any constants here */
310	croak ("cannot set result pipe to nonblocking mode");	1072	/* the first block can be undef if missing */
		1073	const_iv (ENOSYS)
		1074	const_iv (EXDEV)
		1075	const_iv (EBADR)
311		1076
312	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	1077	/* for lseek */
313	croak ("cannot set result pipe to nonblocking mode");	1078	const_iv (SEEK_DATA)
314	}	1079	const_iv (SEEK_HOLE)
315		1080
		1081	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1082	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1083	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1084	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1085	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1086	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1087
		1088	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1089	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1090	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1091	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1092	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1093
		1094	/* the second block will be 0 when missing */
		1095	const_iv (O_ACCMODE)
		1096
		1097	const_iv (O_RDONLY)
		1098	const_iv (O_WRONLY)
		1099	const_iv (O_RDWR)
		1100	const_iv (O_CREAT)
		1101	const_iv (O_TRUNC)
		1102	const_iv (O_EXCL)
		1103	const_iv (O_APPEND)
		1104
		1105	const_iv (O_ASYNC)
		1106	const_iv (O_DIRECT)
		1107	const_iv (O_NOATIME)
		1108
		1109	const_iv (O_CLOEXEC)
		1110	const_iv (O_NOCTTY)
		1111	const_iv (O_NOFOLLOW)
		1112	const_iv (O_NONBLOCK)
		1113	const_iv (O_EXEC)
		1114	const_iv (O_SEARCH)
		1115	const_iv (O_DIRECTORY)
		1116	const_iv (O_DSYNC)
		1117	const_iv (O_RSYNC)
		1118	const_iv (O_SYNC)
		1119	const_iv (O_PATH)
		1120	const_iv (O_TMPFILE)
		1121	const_iv (O_TTY_INIT)
		1122
		1123	const_iv (S_IFIFO)
		1124	const_iv (S_IFCHR)
		1125	const_iv (S_IFBLK)
		1126	const_iv (S_IFLNK)
		1127	const_iv (S_IFREG)
		1128	const_iv (S_IFDIR)
		1129	const_iv (S_IFWHT)
		1130	const_iv (S_IFSOCK)
		1131	const_iv (S_IFMT)
		1132
		1133	const_iv (ST_RDONLY)
		1134	const_iv (ST_NOSUID)
		1135	const_iv (ST_NODEV)
		1136	const_iv (ST_NOEXEC)
		1137	const_iv (ST_SYNCHRONOUS)
		1138	const_iv (ST_MANDLOCK)
		1139	const_iv (ST_WRITE)
		1140	const_iv (ST_APPEND)
		1141	const_iv (ST_IMMUTABLE)
		1142	const_iv (ST_NOATIME)
		1143	const_iv (ST_NODIRATIME)
		1144	const_iv (ST_RELATIME)
		1145
		1146	const_iv (PROT_NONE)
		1147	const_iv (PROT_EXEC)
		1148	const_iv (PROT_READ)
		1149	const_iv (PROT_WRITE)
		1150
		1151	const_iv (MAP_PRIVATE)
		1152	const_iv (MAP_SHARED)
		1153	const_iv (MAP_FIXED)
		1154	const_iv (MAP_ANONYMOUS)
		1155
		1156	/* linuxish */
		1157	const_iv (MAP_LOCKED)
		1158	const_iv (MAP_NORESERVE)
		1159	const_iv (MAP_POPULATE)
		1160	const_iv (MAP_NONBLOCK)
		1161	const_iv (MAP_GROWSDOWN)
		1162	const_iv (MAP_32BIT)
		1163	const_iv (MAP_HUGETLB)
		1164	const_iv (MAP_STACK)
		1165
		1166	const_iv (MREMAP_MAYMOVE)
		1167	const_iv (MREMAP_FIXED)
		1168
		1169	const_iv (F_DUPFD_CLOEXEC)
		1170
		1171	const_iv (MSG_CMSG_CLOEXEC)
		1172	const_iv (SOCK_CLOEXEC)
		1173
		1174	const_iv (F_OFD_GETLK)
		1175	const_iv (F_OFD_SETLK)
		1176	const_iv (F_OFD_GETLKW)
		1177
		1178	const_iv (FIFREEZE)
		1179	const_iv (FITHAW)
		1180	const_iv (FITRIM)
		1181	const_iv (FICLONE)
		1182	const_iv (FICLONERANGE)
		1183	const_iv (FIDEDUPERANGE)
		1184
		1185	const_iv (FS_IOC_GETFLAGS)
		1186	const_iv (FS_IOC_SETFLAGS)
		1187	const_iv (FS_IOC_GETVERSION)
		1188	const_iv (FS_IOC_SETVERSION)
		1189	const_iv (FS_IOC_FIEMAP)
		1190	const_iv (FS_IOC_FSGETXATTR)
		1191	const_iv (FS_IOC_FSSETXATTR)
		1192	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1193	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1194	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1195
		1196	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1197
		1198	const_iv (FS_SECRM_FL)
		1199	const_iv (FS_UNRM_FL)
		1200	const_iv (FS_COMPR_FL)
		1201	const_iv (FS_SYNC_FL)
		1202	const_iv (FS_IMMUTABLE_FL)
		1203	const_iv (FS_APPEND_FL)
		1204	const_iv (FS_NODUMP_FL)
		1205	const_iv (FS_NOATIME_FL)
		1206	const_iv (FS_DIRTY_FL)
		1207	const_iv (FS_COMPRBLK_FL)
		1208	const_iv (FS_NOCOMP_FL)
		1209	const_iv (FS_ENCRYPT_FL)
		1210	const_iv (FS_BTREE_FL)
		1211	const_iv (FS_INDEX_FL)
		1212	const_iv (FS_JOURNAL_DATA_FL)
		1213	const_iv (FS_NOTAIL_FL)
		1214	const_iv (FS_DIRSYNC_FL)
		1215	const_iv (FS_TOPDIR_FL)
		1216	const_iv (FS_FL_USER_MODIFIABLE)
		1217
		1218	const_iv (FS_XFLAG_REALTIME)
		1219	const_iv (FS_XFLAG_PREALLOC)
		1220	const_iv (FS_XFLAG_IMMUTABLE)
		1221	const_iv (FS_XFLAG_APPEND)
		1222	const_iv (FS_XFLAG_SYNC)
		1223	const_iv (FS_XFLAG_NOATIME)
		1224	const_iv (FS_XFLAG_NODUMP)
		1225	const_iv (FS_XFLAG_RTINHERIT)
		1226	const_iv (FS_XFLAG_PROJINHERIT)
		1227	const_iv (FS_XFLAG_NOSYMLINKS)
		1228	const_iv (FS_XFLAG_EXTSIZE)
		1229	const_iv (FS_XFLAG_EXTSZINHERIT)
		1230	const_iv (FS_XFLAG_NODEFRAG)
		1231	const_iv (FS_XFLAG_FILESTREAM)
		1232	const_iv (FS_XFLAG_DAX)
		1233	const_iv (FS_XFLAG_HASATTR)
		1234
		1235	const_iv (FIEMAP_FLAG_SYNC)
		1236	const_iv (FIEMAP_FLAG_XATTR)
		1237	const_iv (FIEMAP_FLAGS_COMPAT)
		1238	const_iv (FIEMAP_EXTENT_LAST)
		1239	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1240	const_iv (FIEMAP_EXTENT_DELALLOC)
		1241	const_iv (FIEMAP_EXTENT_ENCODED)
		1242	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1243	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1244	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1245	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1246	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1247	const_iv (FIEMAP_EXTENT_MERGED)
		1248	const_iv (FIEMAP_EXTENT_SHARED)
		1249
		1250	const_iv (SPLICE_F_MOVE)
		1251	const_iv (SPLICE_F_NONBLOCK)
		1252	const_iv (SPLICE_F_MORE)
		1253	const_iv (SPLICE_F_GIFT)
		1254
		1255	const_iv (EFD_CLOEXEC)
		1256	const_iv (EFD_NONBLOCK)
		1257	const_iv (EFD_SEMAPHORE)
		1258
		1259	const_iv (CLOCK_REALTIME)
		1260	const_iv (CLOCK_MONOTONIC)
		1261	const_iv (CLOCK_BOOTTIME)
		1262	const_iv (CLOCK_REALTIME_ALARM)
		1263	const_iv (CLOCK_BOOTTIME_ALARM)
		1264
		1265	const_iv (TFD_NONBLOCK)
		1266	const_iv (TFD_CLOEXEC)
		1267
		1268	const_iv (TFD_TIMER_ABSTIME)
		1269	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1270
		1271	/* these are libeio constants, and are independent of gendef0 */
		1272	const_eio (SEEK_SET)
		1273	const_eio (SEEK_CUR)
		1274	const_eio (SEEK_END)
		1275
		1276	const_eio (MCL_FUTURE)
		1277	const_eio (MCL_CURRENT)
		1278	const_eio (MCL_ONFAULT)
		1279
		1280	const_eio (MS_ASYNC)
		1281	const_eio (MS_INVALIDATE)
		1282	const_eio (MS_SYNC)
		1283
		1284	const_eio (MT_MODIFY)
		1285
		1286	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1287	const_eio (SYNC_FILE_RANGE_WRITE)
		1288	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1289
		1290	const_eio (FALLOC_FL_KEEP_SIZE)
		1291	const_eio (FALLOC_FL_PUNCH_HOLE)
		1292	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1293	const_eio (FALLOC_FL_ZERO_RANGE)
		1294	const_eio (FALLOC_FL_INSERT_RANGE)
		1295	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1296
		1297	const_eio (RENAME_NOREPLACE)
		1298	const_eio (RENAME_EXCHANGE)
		1299	const_eio (RENAME_WHITEOUT)
		1300
		1301	const_eio (READDIR_DENTS)
		1302	const_eio (READDIR_DIRS_FIRST)
		1303	const_eio (READDIR_STAT_ORDER)
		1304	const_eio (READDIR_FOUND_UNKNOWN)
		1305
		1306	const_eio (DT_UNKNOWN)
		1307	const_eio (DT_FIFO)
		1308	const_eio (DT_CHR)
		1309	const_eio (DT_DIR)
		1310	const_eio (DT_BLK)
		1311	const_eio (DT_REG)
		1312	const_eio (DT_LNK)
		1313	const_eio (DT_SOCK)
		1314	const_eio (DT_WHT)
		1315	};
		1316
		1317	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1318	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1319	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1320	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1321
		1322	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1323	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1324
		1325	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1326
		1327	/* allocate dummy pipe fd for aio_close */
		1328	{
		1329	int pipefd [2];
		1330
		1331	if (
		1332	#ifdef _WIN32
		1333	_pipe (pipefd, 1, _O_BINARY) < 0
		1334	#else
		1335	pipe (pipefd) < 0
		1336	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1337	#endif
		1338	|| close (pipefd [1]) < 0
		1339	)
		1340	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1341
		1342	close_fd = pipefd [0];
		1343	}
		1344
		1345	reinit ();
		1346	}
		1347
316	void	1348	void
317	min_parallel(nthreads)	1349	reinit ()
318	int nthreads	1350	PROTOTYPE:
		1351
		1352	void
		1353	max_poll_reqs (unsigned int nreqs)
319	PROTOTYPE: $	1354	PROTOTYPE: $
320	CODE:	1355	CODE:
321	while (nthreads > started)	1356	eio_set_max_poll_reqs (nreqs);
322	start_thread ();
323		1357
324	void	1358	void
325	max_parallel(nthreads)	1359	max_poll_time (double nseconds)
326	int nthreads
327	PROTOTYPE: $	1360	PROTOTYPE: $
328	CODE:	1361	CODE:
329	{	1362	eio_set_max_poll_time (nseconds);
330	int cur = started;
331	while (cur > nthreads)
332	{
333	end_thread ();
334	cur--;
335	}
336		1363
337	while (started > nthreads)	1364	void
		1365	min_parallel (unsigned int nthreads)
		1366	PROTOTYPE: $
		1367	CODE:
		1368	eio_set_min_parallel (nthreads);
		1369
		1370	void
		1371	max_parallel (unsigned int nthreads)
		1372	PROTOTYPE: $
		1373	CODE:
		1374	eio_set_max_parallel (nthreads);
		1375
		1376	void
		1377	max_idle (unsigned int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	eio_set_max_idle (nthreads);
		1381
		1382	void
		1383	idle_timeout (unsigned int seconds)
		1384	PROTOTYPE: $
		1385	CODE:
		1386	eio_set_idle_timeout (seconds);
		1387
		1388	void
		1389	max_outstanding (unsigned int maxreqs)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	max_outstanding = maxreqs;
		1393
		1394	void
		1395	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399
		1400	req->type = EIO_WD_OPEN;
		1401	req_set_path1 (req, pathname);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
		1407	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1408	PPCODE:
		1409	{
		1410	dREQ;
		1411
		1412	req->type = EIO_OPEN;
		1413	req_set_path1 (req, pathname);
		1414	req->int1 = flags;
		1415	req->int2 = mode;
		1416
		1417	REQ_SEND;
		1418	}
		1419
		1420	void
		1421	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1422	ALIAS:
		1423	aio_fsync = EIO_FSYNC
		1424	aio_fdatasync = EIO_FDATASYNC
		1425	aio_syncfs = EIO_SYNCFS
		1426	PPCODE:
		1427	{
		1428	int fd = s_fileno_croak (fh, 0);
		1429	dREQ;
		1430
		1431	req->type = ix;
		1432	req->sv1 = newSVsv (fh);
		1433	req->int1 = fd;
		1434
		1435	REQ_SEND;
		1436	}
		1437
		1438	void
		1439	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1440	PPCODE:
		1441	{
		1442	int fd = s_fileno_croak (fh, 0);
		1443	dREQ;
		1444
		1445	req->type = EIO_SYNC_FILE_RANGE;
		1446	req->sv1 = newSVsv (fh);
		1447	req->int1 = fd;
		1448	req->offs = offset;
		1449	req->size = nbytes;
		1450	req->int2 = flags;
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
		1456	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1457	PPCODE:
		1458	{
		1459	int fd = s_fileno_croak (fh, 0);
		1460	dREQ;
		1461
		1462	req->type = EIO_FALLOCATE;
		1463	req->sv1 = newSVsv (fh);
		1464	req->int1 = fd;
		1465	req->int2 = mode;
		1466	req->offs = offset;
		1467	req->size = len;
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1474	PPCODE:
		1475	{
		1476	int fd = s_fileno_croak (fh, 0);
		1477	dREQ;
		1478
		1479	req->type = EIO_DUP2;
		1480	req->int1 = close_fd;
		1481	req->sv2 = newSVsv (fh);
		1482	req->int2 = fd;
		1483
		1484	REQ_SEND;
		1485	}
		1486
		1487	void
		1488	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1489	PPCODE:
		1490	{
		1491	int fd = s_fileno_croak (fh, 0);
		1492	dREQ;
		1493
		1494	req->type = EIO_SEEK;
		1495	req->sv1 = newSVsv (fh);
		1496	req->int1 = fd;
		1497	req->offs = SvVAL64 (offset);
		1498	req->int2 = whence;
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
		1504	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
		1505	ALIAS:
		1506	aio_read = EIO_READ
		1507	aio_write = EIO_WRITE
		1508	PPCODE:
		1509	{
		1510	STRLEN svlen;
		1511	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
		1512	char *svptr = SvPVbyte (data, svlen);
		1513	UV len = SvUV (length);
		1514
		1515	if (dataoffset < 0)
		1516	dataoffset += svlen;
		1517
		1518	if (dataoffset < 0 || dataoffset > svlen)
		1519	croak ("dataoffset outside of data scalar");
		1520
		1521	if (ix == EIO_WRITE)
338	{	1522	{
339	poll_wait ();	1523	/* write: check length and adjust. */
340	poll_cb (aTHX);	1524	if (!SvOK (length) || len + dataoffset > svlen)
341	}	1525	len = svlen - dataoffset;
342	}
343
344	void
345	aio_open(pathname,flags,mode,callback)
346	SV * pathname
347	int flags
348	int mode
349	SV * callback
350	PROTOTYPE: $$$$
351	CODE:
352	{
353	aio_req req;
354
355	Newz (0, req, 1, aio_cb);
356
357	if (!req)
358	croak ("out of memory during aio_req allocation");
359
360	req->type = REQ_OPEN;
361	req->data = newSVsv (pathname);
362	req->dataptr = SvPV_nolen (req->data);
363	req->fd = flags;
364	req->mode = mode;
365	req->callback = SvREFCNT_inc (callback);
366
367	send_req (req);
368	}
369
370	void
371	aio_close(fh,callback)
372	InputStream fh
373	SV * callback
374	PROTOTYPE: $$
375	ALIAS:
376	aio_close = REQ_CLOSE
377	aio_fsync = REQ_FSYNC
378	aio_fdatasync = REQ_FDATASYNC
379	CODE:
380	{
381	aio_req req;
382
383	Newz (0, req, 1, aio_cb);
384
385	if (!req)
386	croak ("out of memory during aio_req allocation");
387
388	req->type = ix;
389	req->fd = PerlIO_fileno (fh);
390	req->callback = SvREFCNT_inc (callback);
391
392	send_req (req);
393	}
394
395	void
396	aio_read(fh,offset,length,data,dataoffset,callback)
397	InputStream fh
398	UV offset
399	IV length
400	SV * data
401	IV dataoffset
402	SV * callback
403	PROTOTYPE: $$$$$$
404	CODE:
405	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407	void
408	aio_write(fh,offset,length,data,dataoffset,callback)
409	OutputStream fh
410	UV offset
411	IV length
412	SV * data
413	IV dataoffset
414	SV * callback
415	PROTOTYPE: $$$$$$
416	CODE:
417	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419	void
420	aio_readahead(fh,offset,length,callback)
421	InputStream fh
422	UV offset
423	IV length
424	SV * callback
425	PROTOTYPE: $$$$
426	CODE:
427	{
428	aio_req req;
429
430	if (length < 0)
431	croak ("length must not be negative");
432
433	Newz (0, req, 1, aio_cb);
434
435	if (!req)
436	croak ("out of memory during aio_req allocation");
437
438	req->type = REQ_READAHEAD;
439	req->fd = PerlIO_fileno (fh);
440	req->offset = offset;
441	req->length = length;
442	req->callback = SvREFCNT_inc (callback);
443
444	send_req (req);
445	}
446
447	void
448	aio_stat(fh_or_path,callback)
449	SV * fh_or_path
450	SV * callback
451	PROTOTYPE: $$
452	ALIAS:
453	aio_lstat = 1
454	CODE:
455	{
456	aio_req req;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462
463	New (0, req->statdata, 1, Stat_t);
464
465	if (!req->statdata)
466	croak ("out of memory during aio_req->statdata allocation");
467
468	if (SvPOK (fh_or_path))
469	{
470	req->type = ix ? REQ_LSTAT : REQ_STAT;
471	req->data = newSVsv (fh_or_path);
472	req->dataptr = SvPV_nolen (req->data);
473	}	1526	}
474	else	1527	else
475	{	1528	{
476	req->type = REQ_FSTAT;	1529	/* read: check type and grow scalar as necessary */
477	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1530	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1531	svptr = sv_grow (data, len + dataoffset + 1);
		1532	else if (SvCUR (data) < len + dataoffset)
		1533	croak ("length + dataoffset outside of scalar, and cannot grow");
478	}	1534	}
479		1535
		1536	{
		1537	dREQ;
		1538
		1539	req->type = ix;
		1540	req->sv1 = newSVsv (fh);
		1541	req->int1 = fd;
		1542	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1543	req->size = len;
480	req->callback = SvREFCNT_inc (callback);	1544	req->sv2 = SvREFCNT_inc (data);
		1545	req->ptr2 = (char *)svptr + dataoffset;
		1546	req->stroffset = dataoffset;
481		1547
482	send_req (req);	1548	if (!SvREADONLY (data))
483	}	1549	{
		1550	SvREADONLY_on (data);
		1551	req->flags |= FLAG_SV2_RO_OFF;
		1552	}
484		1553
		1554	REQ_SEND;
		1555	}
		1556	}
		1557
485	void	1558	void
486	aio_unlink(pathname,callback)	1559	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
487	SV * pathname	1560	ALIAS:
488	SV * callback	1561	aio_ioctl = EIO_IOCTL
489	PROTOTYPE: $$	1562	aio_fcntl = EIO_FCNTL
		1563	PPCODE:
		1564	{
		1565	int fd = s_fileno_croak (fh, 0);
		1566	char *svptr;
		1567
		1568	if (SvPOK (arg) || !SvNIOK (arg))
		1569	{
		1570	STRLEN svlen;
		1571	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1572	#ifdef IOCPARM_LEN
		1573	STRLEN need = IOCPARM_LEN (request);
		1574	#else
		1575	STRLEN need = 256;
		1576	#endif
		1577
		1578	if (svlen < need)
		1579	svptr = SvGROW (arg, need);
		1580	}
		1581	else
		1582	svptr = (char *)SvIV (arg);
		1583
		1584	{
		1585	dREQ;
		1586
		1587	req->type = ix;
		1588	req->sv1 = newSVsv (fh);
		1589	req->int1 = fd;
		1590	req->int2 = (long)request;
		1591	req->sv2 = SvREFCNT_inc (arg);
		1592	req->ptr2 = svptr;
		1593
		1594	REQ_SEND;
		1595	}
		1596	}
		1597
		1598	void
		1599	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1600	ALIAS:
		1601	aio_readlink = EIO_READLINK
		1602	aio_realpath = EIO_REALPATH
		1603	PPCODE:
		1604	{
		1605	dREQ;
		1606
		1607	req->type = ix;
		1608	req_set_path1 (req, pathname);
		1609
		1610	REQ_SEND;
		1611	}
		1612
		1613	void
		1614	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1615	PPCODE:
		1616	{
		1617	int ifd = s_fileno_croak (in_fh , 0);
		1618	int ofd = s_fileno_croak (out_fh, 1);
		1619	dREQ;
		1620
		1621	req->type = EIO_SENDFILE;
		1622	req->sv1 = newSVsv (out_fh);
		1623	req->int1 = ofd;
		1624	req->sv2 = newSVsv (in_fh);
		1625	req->int2 = ifd;
		1626	req->offs = in_offset;
		1627	req->size = length;
		1628
		1629	REQ_SEND;
		1630	}
		1631
		1632	void
		1633	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1634	PPCODE:
		1635	{
		1636	int fd = s_fileno_croak (fh, 0);
		1637	dREQ;
		1638
		1639	req->type = EIO_READAHEAD;
		1640	req->sv1 = newSVsv (fh);
		1641	req->int1 = fd;
		1642	req->offs = offset;
		1643	req->size = length;
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1650	ALIAS:
		1651	aio_stat = EIO_STAT
		1652	aio_lstat = EIO_LSTAT
		1653	aio_statvfs = EIO_STATVFS
		1654	PPCODE:
		1655	{
		1656	dREQ;
		1657
		1658	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1659
		1660	REQ_SEND;
		1661	}
		1662
		1663	void
		1664	st_xtime ()
		1665	ALIAS:
		1666	st_atime = 0x01
		1667	st_mtime = 0x02
		1668	st_ctime = 0x04
		1669	st_btime = 0x08
		1670	st_xtime = 0x0f
		1671	PPCODE:
		1672	EXTEND (SP, 4);
		1673	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1674	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1675	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1676	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1677
		1678	void
		1679	st_xtimensec ()
		1680	ALIAS:
		1681	st_atimensec = 0x01
		1682	st_mtimensec = 0x02
		1683	st_ctimensec = 0x04
		1684	st_btimensec = 0x08
		1685	st_xtimensec = 0x0f
		1686	st_btimesec = 0x10
		1687	st_gen = 0x20
		1688	PPCODE:
		1689	EXTEND (SP, 4);
		1690	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1691	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1692	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1693	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1694	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1695	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1696
		1697	UV
		1698	major (UV dev)
		1699	ALIAS:
		1700	minor = 1
490	CODE:	1701	CODE:
		1702	RETVAL = ix ? minor (dev) : major (dev);
		1703	OUTPUT:
		1704	RETVAL
		1705
		1706	UV
		1707	makedev (UV maj, UV min)
		1708	CODE:
		1709	RETVAL = makedev (maj, min);
		1710	OUTPUT:
		1711	RETVAL
		1712
		1713	void
		1714	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1715	PPCODE:
491	{	1716	{
492	aio_req req;	1717	dREQ;
		1718
		1719	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1720	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1721	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1722
		1723	REQ_SEND;
		1724	}
		1725
		1726	void
		1727	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1728	PPCODE:
		1729	{
		1730	dREQ;
		1731
		1732	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1733	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1734
		1735	REQ_SEND;
		1736	}
		1737
		1738	void
		1739	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1740	PPCODE:
		1741	{
		1742	dREQ;
		1743
		1744	req->int2 = mode;
		1745	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1746
		1747	REQ_SEND;
		1748	}
		1749
		1750	void
		1751	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1752	PPCODE:
		1753	{
		1754	dREQ;
		1755
		1756	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1757	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1758	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1759
		1760	REQ_SEND;
		1761	}
		1762
		1763	void
		1764	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1765	PPCODE:
		1766	{
		1767	dREQ;
493		1768
494	Newz (0, req, 1, aio_cb);	1769	req->type = EIO_READDIR;
		1770	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1771
		1772	if (flags & EIO_READDIR_DENTS)
		1773	req->int1 |= EIO_READDIR_CUSTOM2;
		1774
		1775	req_set_path1 (req, pathname);
		1776
		1777	REQ_SEND;
		1778	}
		1779
		1780	void
		1781	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1782	PPCODE:
		1783	{
		1784	dREQ;
		1785
		1786	req->type = EIO_MKDIR;
		1787	req->int2 = mode;
		1788	req_set_path1 (req, pathname);
		1789
		1790	REQ_SEND;
		1791	}
		1792
		1793	void
		1794	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1795	ALIAS:
		1796	aio_unlink = EIO_UNLINK
		1797	aio_rmdir = EIO_RMDIR
		1798	aio_readdir = EIO_READDIR
		1799	PPCODE:
		1800	{
		1801	dREQ;
495		1802
496	if (!req)	1803	req->type = ix;
497	croak ("out of memory during aio_req allocation");	1804	req_set_path1 (req, pathname);
		1805
		1806	REQ_SEND;
		1807	}
		1808
		1809	void
		1810	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1811	ALIAS:
		1812	aio_link = EIO_LINK
		1813	aio_symlink = EIO_SYMLINK
		1814	aio_rename = EIO_RENAME
		1815	PPCODE:
		1816	{
		1817	eio_wd wd2 = 0;
		1818	dREQ;
498		1819
499	req->type = REQ_UNLINK;	1820	req->type = ix;
500	req->data = newSVsv (pathname);	1821	req_set_path1 (req, oldpath);
501	req->dataptr = SvPV_nolen (req->data);	1822	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
502	req->callback = SvREFCNT_inc (callback);	1823	req->int3 = (long)wd2;
503		1824
504	send_req (req);	1825	REQ_SEND;
		1826	}
		1827
		1828	void
		1829	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1830	PPCODE:
		1831	{
		1832	eio_wd wd2 = 0;
		1833	dREQ;
		1834
		1835	req->type = EIO_RENAME;
		1836	req_set_path1 (req, oldpath);
		1837	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1838	req->int2 = flags;
		1839	req->int3 = (long)wd2;
		1840
		1841	REQ_SEND;
		1842	}
		1843
		1844	void
		1845	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
		1846	PPCODE:
		1847	{
		1848	dREQ;
		1849
		1850	req->type = EIO_MKNOD;
		1851	req->int2 = (mode_t)mode;
		1852	req->offs = dev;
		1853	req_set_path1 (req, pathname);
		1854
		1855	REQ_SEND;
		1856	}
		1857
		1858	void
		1859	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1860	ALIAS:
		1861	aio_mtouch = EIO_MTOUCH
		1862	aio_msync = EIO_MSYNC
		1863	PPCODE:
		1864	{
		1865	STRLEN svlen;
		1866	char *svptr = SvPVbyte (data, svlen);
		1867	UV len = SvUV (length);
		1868
		1869	if (flags < 0)
		1870	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1871
		1872	if (offset < 0)
		1873	offset += svlen;
		1874
		1875	if (offset < 0 || offset > svlen)
		1876	croak ("offset outside of scalar");
		1877
		1878	if (!SvOK (length) || len + offset > svlen)
		1879	len = svlen - offset;
		1880
		1881	{
		1882	dREQ;
		1883
		1884	req->type = ix;
		1885	req->sv2 = SvREFCNT_inc (data);
		1886	req->ptr2 = (char *)svptr + offset;
		1887	req->size = len;
		1888	req->int1 = flags;
		1889
		1890	REQ_SEND;
		1891	}
		1892	}
		1893
		1894	void
		1895	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1896	PPCODE:
		1897	{
		1898	STRLEN svlen;
		1899	char *svptr = SvPVbyte (data, svlen);
		1900	UV len = SvUV (length);
		1901
		1902	if (offset < 0)
		1903	offset += svlen;
		1904
		1905	if (offset < 0 || offset > svlen)
		1906	croak ("offset outside of scalar");
		1907
		1908	if (!SvOK (length) || len + offset > svlen)
		1909	len = svlen - offset;
		1910
		1911	{
		1912	dREQ;
		1913
		1914	req->type = EIO_MLOCK;
		1915	req->sv2 = SvREFCNT_inc (data);
		1916	req->ptr2 = (char *)svptr + offset;
		1917	req->size = len;
		1918
		1919	REQ_SEND;
		1920	}
		1921	}
		1922
		1923	void
		1924	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1925	PPCODE:
		1926	{
		1927	dREQ;
		1928
		1929	req->type = EIO_MLOCKALL;
		1930	req->int1 = flags;
		1931
		1932	REQ_SEND;
		1933	}
		1934
		1935	void
		1936	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1937	PPCODE:
		1938	{
		1939	int fd = s_fileno_croak (fh, 0);
		1940	dREQ;
		1941
		1942	req->type = EIO_CUSTOM;
		1943	req->sv1 = newSVsv (fh);
		1944	req->int1 = fd;
		1945
		1946	req->feed = fiemap;
		1947	#if HAVE_FIEMAP
		1948	/* keep our fingers crossed that the next two types are 64 bit */
		1949	req->offs = start;
		1950	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1951	req->int2 = flags;
		1952	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1953	#endif
		1954
		1955	REQ_SEND;
		1956	}
		1957
		1958	void
		1959	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1960	PPCODE:
		1961	{
		1962	char *svptr = 0;
		1963
		1964	sv_clear_foreign (data);
		1965
		1966	if (length) /* known length, directly read into scalar */
		1967	{
		1968	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1969	svptr = sv_grow (data, length + 1);
		1970	else if (SvCUR (data) < length)
		1971	croak ("length outside of scalar, and cannot grow");
		1972	else
		1973	svptr = SvPVbyte_nolen (data);
		1974	}
		1975
		1976	{
		1977	dREQ;
		1978
		1979	req->type = EIO_SLURP;
		1980	req_set_path1 (req, pathname);
		1981	req->offs = offset;
		1982	req->size = length;
		1983	req->sv2 = SvREFCNT_inc (data);
		1984	req->ptr2 = svptr;
		1985
		1986	if (!SvREADONLY (data))
		1987	{
		1988	SvREADONLY_on (data);
		1989	req->flags |= FLAG_SV2_RO_OFF;
		1990	}
		1991
		1992	REQ_SEND;
		1993	}
		1994	}
		1995
		1996	void
		1997	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1998	PPCODE:
		1999	{
		2000	dREQ;
		2001
		2002	req->type = EIO_BUSY;
		2003	req->nv1 = delay < 0. ? 0. : delay;
		2004
		2005	REQ_SEND;
		2006	}
		2007
		2008	void
		2009	aio_group (SV *callback = &PL_sv_undef)
		2010	PPCODE:
		2011	{
		2012	dREQ;
		2013
		2014	req->type = EIO_GROUP;
		2015
		2016	PUTBACK;
		2017	req_submit (req);
		2018	SPAGAIN;
		2019
		2020	XPUSHs (req_sv (req, aio_grp_stash));
		2021	}
		2022
		2023	void
		2024	aio_nop (SV *callback = &PL_sv_undef)
		2025	ALIAS:
		2026	aio_nop = EIO_NOP
		2027	aio_sync = EIO_SYNC
		2028	PPCODE:
		2029	{
		2030	dREQ;
		2031
		2032	req->type = ix;
		2033
		2034	REQ_SEND;
505	}	2035	}
506		2036
507	int	2037	int
		2038	aioreq_pri (int pri = NO_INIT)
		2039	CODE:
		2040	RETVAL = next_pri;
		2041	if (items > 0)
		2042	{
		2043	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		2044	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		2045	next_pri = pri;
		2046	}
		2047	OUTPUT:
		2048	RETVAL
		2049
		2050	void
		2051	aioreq_nice (int nice = 0)
		2052	CODE:
		2053	nice = next_pri - nice;
		2054	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		2055	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		2056	next_pri = nice;
		2057
		2058	void
		2059	flush ()
		2060	CODE:
		2061	while (eio_nreqs ())
		2062	{
		2063	poll_wait ();
		2064	poll_cb ();
		2065	}
		2066
		2067	int
		2068	poll ()
		2069	CODE:
		2070	poll_wait ();
		2071	RETVAL = poll_cb ();
		2072	OUTPUT:
		2073	RETVAL
		2074
		2075	int
508	poll_fileno()	2076	poll_fileno ()
		2077	CODE:
		2078	RETVAL = s_epipe_fd (&respipe);
		2079	OUTPUT:
		2080	RETVAL
		2081
		2082	int
		2083	poll_cb (...)
509	PROTOTYPE:	2084	PROTOTYPE:
510	CODE:	2085	CODE:
511	RETVAL = respipe[0];	2086	RETVAL = poll_cb ();
512	OUTPUT:	2087	OUTPUT:
513	RETVAL	2088	RETVAL
514		2089
		2090	void
		2091	poll_wait ()
		2092	CODE:
		2093	poll_wait ();
		2094
515	int	2095	int
516	poll_cb(...)	2096	nreqs ()
517	PROTOTYPE:
518	CODE:	2097	CODE:
519	RETVAL = poll_cb (aTHX);	2098	RETVAL = eio_nreqs ();
520	OUTPUT:	2099	OUTPUT:
521	RETVAL	2100	RETVAL
522		2101
523	void	2102	int
524	poll_wait()	2103	nready ()
525	PROTOTYPE:
526	CODE:	2104	CODE:
527	poll_wait ();
528
529	int
530	nreqs()
531	PROTOTYPE:
532	CODE:
533	RETVAL = nreqs;	2105	RETVAL = eio_nready ();
534	OUTPUT:	2106	OUTPUT:
535	RETVAL	2107	RETVAL
536		2108
		2109	int
		2110	npending ()
		2111	CODE:
		2112	RETVAL = eio_npending ();
		2113	OUTPUT:
		2114	RETVAL
		2115
		2116	int
		2117	nthreads ()
		2118	CODE:
		2119	RETVAL = eio_nthreads ();
		2120	OUTPUT:
		2121	RETVAL
		2122
		2123	int
		2124	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2125	CODE:
		2126	RETVAL = posix_fadvise (fh, offset, length, advice);
		2127	OUTPUT:
		2128	RETVAL
		2129
		2130	IV
		2131	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2132	CODE:
		2133	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2134	OUTPUT:
		2135	RETVAL
		2136
		2137	void
		2138	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2139	PPCODE:
		2140	sv_clear_foreign (scalar);
		2141	{
		2142	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2143	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2144	if (addr == (void *)-1)
		2145	XSRETURN_NO;
		2146
		2147	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2148
		2149	if (!(prot & PROT_WRITE))
		2150	SvREADONLY_on (scalar);
		2151
		2152	XSRETURN_YES;
		2153	}
		2154
		2155	void
		2156	munmap (SV *scalar)
		2157	CODE:
		2158	sv_clear_foreign (scalar);
		2159
		2160	SV *
		2161	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2162	CODE:
		2163	{
		2164	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2165	void *new;
		2166
		2167	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2168	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2169
		2170	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2171
		2172	RETVAL = &PL_sv_no;
		2173
		2174	if (new != (void *)-1)
		2175	{
		2176	RETVAL = new == (void *)mg->mg_ptr
		2177	? newSVpvn ("0 but true", 10)
		2178	: &PL_sv_yes;
		2179
		2180	mg->mg_ptr = (char *)new;
		2181	mg->mg_obj = (SV *)new_length;
		2182
		2183	SvPVX (scalar) = mg->mg_ptr;
		2184	SvCUR_set (scalar, new_length);
		2185	}
		2186	}
		2187	OUTPUT:
		2188	RETVAL
		2189
		2190	int
		2191	madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2192	ALIAS:
		2193	mprotect = 1
		2194	CODE:
		2195	{
		2196	STRLEN svlen;
		2197	void *addr = SvPVbyte (scalar, svlen);
		2198	STRLEN len = SvUV (length);
		2199
		2200	if (offset < 0)
		2201	offset += svlen;
		2202
		2203	if (offset < 0 || offset > svlen)
		2204	croak ("offset outside of scalar");
		2205
		2206	if (!SvOK (length) || len + offset > svlen)
		2207	len = svlen - offset;
		2208
		2209	addr = (void *)(((intptr_t)addr) + offset);
		2210	eio_page_align (&addr, &len);
		2211
		2212	switch (ix)
		2213	{
		2214	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2215	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2216	}
		2217	}
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
		2223	CODE:
		2224	{
		2225	STRLEN svlen;
		2226	void *addr = SvPVbyte (scalar, svlen);
		2227	size_t len = SvUV (length);
		2228
		2229	if (offset < 0)
		2230	offset += svlen;
		2231
		2232	if (offset < 0 || offset > svlen)
		2233	croak ("offset outside of scalar");
		2234
		2235	if (!SvOK (length) || len + offset > svlen)
		2236	len = svlen - offset;
		2237
		2238	addr = (void *)(((intptr_t)addr) + offset);
		2239	eio_page_align (&addr, &len);
		2240	#if _POSIX_MEMLOCK_RANGE
		2241	RETVAL = munlock (addr, len);
		2242	#else
		2243	RETVAL = EIO_ENOSYS ();
		2244	#endif
		2245	}
		2246	OUTPUT:
		2247	RETVAL
		2248
		2249	int
		2250	mlockall (int flags)
		2251	CODE:
		2252	RETVAL = eio_mlockall_sync (flags);
		2253	OUTPUT:
		2254	RETVAL
		2255
		2256	int
		2257	munlockall ()
		2258	CODE:
		2259	#if _POSIX_MEMLOCK
		2260	munlockall ();
		2261	#else
		2262	RETVAL = EIO_ENOSYS ();
		2263	#endif
		2264	OUTPUT:
		2265	RETVAL
		2266
		2267	int
		2268	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2269	CODE:
		2270	{
		2271	#if HAVE_LINUX_SPLICE
		2272	loff_t off_in_, off_out_;
		2273	RETVAL = splice (
		2274	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2275	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2276	length, flags
		2277	);
		2278	#else
		2279	RETVAL = EIO_ENOSYS ();
		2280	#endif
		2281	}
		2282	OUTPUT:
		2283	RETVAL
		2284
		2285	int
		2286	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2287	CODE:
		2288	#if HAVE_LINUX_SPLICE
		2289	RETVAL = tee (rfh, wfh, length, flags);
		2290	#else
		2291	RETVAL = EIO_ENOSYS ();
		2292	#endif
		2293	OUTPUT:
		2294	RETVAL
		2295
		2296	int
		2297	pipesize (aio_rfd rfh, int new_size = -1)
		2298	PROTOTYPE: $;$
		2299	CODE:
		2300	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2301	if (new_size >= 0)
		2302	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2303	else
		2304	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2305	#else
		2306	errno = ENOSYS;
		2307	RETVAL = -1;
		2308	#endif
		2309	OUTPUT:
		2310	RETVAL
		2311
		2312	void
		2313	pipe2 (int flags = 0)
		2314	PROTOTYPE: ;$
		2315	PPCODE:
		2316	{
		2317	int fd[2];
		2318	int res;
		2319
		2320	if (flags)
		2321	#if HAVE_PIPE2
		2322	res = pipe2 (fd, flags);
		2323	#else
		2324	res = (errno = ENOSYS, -1);
		2325	#endif
		2326	else
		2327	res = pipe (fd);
		2328
		2329	if (!res)
		2330	{
		2331	EXTEND (SP, 2);
		2332	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2333	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2334	}
		2335	}
		2336
		2337	void
		2338	eventfd (unsigned int initval = 0, int flags = 0)
		2339	PPCODE:
		2340	{
		2341	int fd;
		2342	#if HAVE_EVENTFD
		2343	fd = eventfd (initval, flags);
		2344	#else
		2345	fd = (errno = ENOSYS, -1);
		2346	#endif
		2347
		2348	XPUSHs (newmortalFH (fd, O_RDWR));
		2349	}
		2350
		2351	void
		2352	timerfd_create (int clockid, int flags = 0)
		2353	PPCODE:
		2354	{
		2355	int fd;
		2356	#if HAVE_TIMERFD
		2357	fd = timerfd_create (clockid, flags);
		2358	#else
		2359	fd = (errno = ENOSYS, -1);
		2360	#endif
		2361
		2362	XPUSHs (newmortalFH (fd, O_RDWR));
		2363	}
		2364
		2365	void
		2366	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2367	PPCODE:
		2368	{
		2369	int fd = s_fileno_croak (fh, 0);
		2370	#if HAVE_TIMERFD
		2371	int res;
		2372	struct itimerspec its, ots;
		2373
		2374	ts_set (&its.it_interval, interval);
		2375	ts_set (&its.it_value , value);
		2376	res = timerfd_settime (fd, flags, &its, &ots);
		2377
		2378	if (!res)
		2379	{
		2380	EXTEND (SP, 2);
		2381	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2382	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2383	}
		2384	#else
		2385	errno = ENOSYS;
		2386	#endif
		2387	}
		2388
		2389	void
		2390	timerfd_gettime (SV *fh)
		2391	PPCODE:
		2392	{
		2393	int fd = s_fileno_croak (fh, 0);
		2394	#if HAVE_TIMERFD
		2395	int res;
		2396	struct itimerspec ots;
		2397	res = timerfd_gettime (fd, &ots);
		2398
		2399	if (!res)
		2400	{
		2401	EXTEND (SP, 2);
		2402	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2403	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2404	}
		2405	#else
		2406	errno = ENOSYS;
		2407	#endif
		2408	}
		2409
		2410	UV
		2411	get_fdlimit ()
		2412	CODE:
		2413	#if HAVE_RLIMITS
		2414	struct rlimit rl;
		2415	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2416	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2417	#endif
		2418	XSRETURN_UNDEF;
		2419	OUTPUT:
		2420	RETVAL
		2421
		2422	void
		2423	min_fdlimit (UV limit = 0x7fffffffU)
		2424	CODE:
		2425	{
		2426	#if HAVE_RLIMITS
		2427	struct rlimit rl;
		2428	rlim_t orig_rlim_max;
		2429	UV bit;
		2430
		2431	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2432	goto fail;
		2433
		2434	if (rl.rlim_cur == RLIM_INFINITY)
		2435	XSRETURN_YES;
		2436
		2437	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2438
		2439	if (rl.rlim_cur < limit)
		2440	{
		2441	rl.rlim_cur = limit;
		2442
		2443	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2444	rl.rlim_max = rl.rlim_cur;
		2445	}
		2446
		2447	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2448	XSRETURN_YES;
		2449
		2450	if (errno == EPERM)
		2451	{
		2452	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2453	/* our limit overflows a system-wide limit */
		2454	/* try an adaptive algorithm, but do not lower the hardlimit */
		2455	rl.rlim_max = 0;
		2456	for (bit = 0x40000000U; bit; bit >>= 1)
		2457	{
		2458	rl.rlim_max |= bit;
		2459	rl.rlim_cur = rl.rlim_max;
		2460
		2461	/* nevr decrease the hard limit */
		2462	if (rl.rlim_max < orig_rlim_max)
		2463	break;
		2464
		2465	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2466	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2467	}
		2468
		2469	/* now, raise the soft limit to the max permitted */
		2470	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2471	{
		2472	rl.rlim_cur = rl.rlim_max;
		2473	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2474	errno = EPERM;
		2475	}
		2476	}
		2477	#endif
		2478	fail:
		2479	XSRETURN_UNDEF;
		2480	}
		2481
		2482	void _on_next_submit (SV *cb)
		2483	CODE:
		2484	SvREFCNT_dec (on_next_submit);
		2485	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2486
		2487	PROTOTYPES: DISABLE
		2488
		2489	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2490
		2491	BOOT:
		2492	{
		2493	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2494	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2495	}
		2496
		2497	void
		2498	DESTROY (SV *self)
		2499	CODE:
		2500	{
		2501	aio_wd wd = SvAIO_WD (self);
		2502	#if HAVE_AT
		2503	{
		2504	SV *callback = &PL_sv_undef;
		2505	dREQ; /* clobbers next_pri :/ */
		2506	next_pri = req->pri; /* restore next_pri */
		2507	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2508	req->type = EIO_WD_CLOSE;
		2509	req->wd = wd;
		2510	REQ_SEND;
		2511	}
		2512	#else
		2513	eio_wd_close_sync (wd);
		2514	#endif
		2515	}
		2516
		2517	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2518
		2519	void
		2520	cancel (aio_req_ornot req)
		2521	CODE:
		2522	eio_cancel (req);
		2523
		2524	void
		2525	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2526	PPCODE:
		2527	{
		2528	if (GIMME_V != G_VOID)
		2529	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2530
		2531	if (items > 1)
		2532	{
		2533	SV *cb_cv = get_cb (callback);
		2534
		2535	SvREFCNT_dec (req->callback);
		2536	req->callback = SvREFCNT_inc (cb_cv);
		2537	}
		2538	}
		2539
		2540	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2541
		2542	void
		2543	add (aio_req grp, ...)
		2544	PPCODE:
		2545	{
		2546	int i;
		2547
		2548	if (grp->int1 == 2)
		2549	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2550
		2551	for (i = 1; i < items; ++i )
		2552	{
		2553	aio_req req;
		2554
		2555	if (GIMME_V != G_VOID)
		2556	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2557
		2558	req = SvAIO_REQ (ST (i));
		2559
		2560	if (req)
		2561	eio_grp_add (grp, req);
		2562	}
		2563	}
		2564
		2565	void
		2566	cancel_subs (aio_req_ornot req)
		2567	CODE:
		2568	req_cancel_subs (req);
		2569
		2570	void
		2571	result (aio_req grp, ...)
		2572	CODE:
		2573	{
		2574	int i;
		2575	AV *av;
		2576
		2577	grp->errorno = errno;
		2578
		2579	av = newAV ();
		2580	av_extend (av, items - 1);
		2581
		2582	for (i = 1; i < items; ++i )
		2583	av_push (av, newSVsv (ST (i)));
		2584
		2585	SvREFCNT_dec (grp->sv1);
		2586	grp->sv1 = (SV *)av;
		2587	}
		2588
		2589	void
		2590	errno (aio_req grp, int errorno = errno)
		2591	CODE:
		2592	grp->errorno = errorno;
		2593
		2594	void
		2595	limit (aio_req grp, int limit)
		2596	CODE:
		2597	eio_grp_limit (grp, limit);
		2598
		2599	void
		2600	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2601	CODE:
		2602	{
		2603	SvREFCNT_dec (grp->sv2);
		2604	grp->sv2 = newSVsv (callback);
		2605	grp->feed = aio_grp_feed;
		2606
		2607	if (grp->int2 <= 0)
		2608	grp->int2 = 2;
		2609
		2610	eio_grp_limit (grp, grp->int2);
		2611	}
		2612

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