[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.272 by root, Wed Jan 2 16:32:57 2019 UTC

		1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
		8	#include "perliol.h"
4		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>
5	#include <sys/types.h>	17	#include <sys/types.h>
		18	#include <sys/socket.h>
6	#include <sys/stat.h>	19	#include <sys/stat.h>
7	#include <unistd.h>	20	#include <limits.h>
8	#include <fcntl.h>	21	#include <fcntl.h>
9	#include <signal.h>
10	#include <sched.h>	22	#include <sched.h>
11		23
12	#include <pthread.h>	24	/* the incompetent fool that created musl keeps __linux__, refuses
13	#include <sys/syscall.h>	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
		35	# endif
		36	#endif
14		37
15	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	38	/* perl namespace pollution */
16	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	39	#undef VERSION
17	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */
18		40
19	#if __ia64	41	/* perl stupidly overrides readdir and maybe others */
20	# define STACKSIZE 65536	42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
		47	#ifdef _WIN32
		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
21	#else	85	#else
22	# 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_ST_XTIMENSEC
		123	# define ATIMENSEC PL_statcache.st_atimensec
		124	# define MTIMENSEC PL_statcache.st_mtimensec
		125	# define CTIMENSEC PL_statcache.st_ctimensec
		126	#elif HAVE_ST_XTIMESPEC
		127	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		128	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		129	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		130	#else
		131	# define ATIMENSEC 0
		132	# define MTIMENSEC 0
		133	# define CTIMENSEC 0
		134	#endif
		135
		136	#if HAVE_ST_BIRTHTIMENSEC
		137	# define BTIMESEC PL_statcache.st_birthtime
		138	# define BTIMENSEC PL_statcache.st_birthtimensec
		139	#elif HAVE_ST_BIRTHTIMESPEC
		140	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		141	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		142	#else
		143	# define BTIMESEC 0
		144	# define BTIMENSEC 0
		145	#endif
		146
		147	#if HAVE_ST_GEN
		148	# define ST_GEN PL_statcache.st_gen
		149	#else
		150	# define ST_GEN 0
		151	#endif
		152
		153	#include "schmorp.h"
		154
		155	#if HAVE_EVENTFD
		156	# include <sys/eventfd.h>
		157	#endif
		158
		159	#if HAVE_TIMERFD
		160	# include <sys/timerfd.h>
		161	#endif
		162
		163	#if HAVE_RLIMITS
		164	#include <sys/time.h>
		165	#include <sys/resource.h>
		166	#endif
		167
		168	typedef SV SV8; /* byte-sv, used for argument-checking */
		169	typedef int aio_rfd; /* read file desriptor */
		170	typedef int aio_wfd; /* write file descriptor */
		171
		172	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
		173
		174	#define EIO_REQ_MEMBERS \
		175	SV *callback; \
		176	SV sv1, sv2; \
		177	SV sv3, sv4; \
		178	STRLEN stroffset; \
		179	SV *self;
		180
		181	#define EIO_NO_WRAPPERS 1
		182
		183	#include "libeio/eio.h"
		184
		185	static int req_invoke (eio_req *req);
		186	#define EIO_FINISH(req) req_invoke (req)
		187	static void req_destroy (eio_req *grp);
		188	#define EIO_DESTROY(req) req_destroy (req)
		189
		190	#include "libeio/eio.c"
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#if !HAVE_POSIX_MADVISE
		197	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef MAP_ANONYMOUS
		201	# ifdef MAP_ANON
		202	# define MAP_ANONYMOUS MAP_ANON
		203	# else
		204	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
23	#endif	205	# endif
		206	#endif
24		207
25	enum {	208	#ifndef makedev
26	REQ_QUIT,	209	# define makedev(maj,min) (((maj) << 8) \| (min))
27	REQ_OPEN, REQ_CLOSE,	210	#endif
28	REQ_READ, REQ_WRITE, REQ_READAHEAD,	211	#ifndef major
29	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,	212	# define major(dev) ((dev) >> 8)
30	REQ_FSYNC, REQ_FDATASYNC,	213	#endif
		214	#ifndef minor
		215	# define minor(dev) ((dev) & 0xff)
		216	#endif
		217
		218	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
		219	#ifdef __sun
		220	# undef PAGESIZE
		221	#endif
		222
		223	#if PAGESIZE <= 0
		224	# define PAGESIZE sysconf (_SC_PAGESIZE)
		225	#endif
		226
		227	/*****************************************************************************/
		228
		229	#if !_POSIX_MAPPED_FILES
		230	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		231	# define munmap(addr,length) EIO_ENOSYS ()
		232	#endif
		233
		234	#if !_POSIX_MEMORY_PROTECTION
		235	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		236	#endif
		237
		238	#if !MREMAP_MAYMOVE
		239	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		240	#endif
		241
		242	#define FOREIGN_MAGIC PERL_MAGIC_ext
		243
		244	static int ecb_cold
		245	mmap_free (pTHX_ SV sv, MAGIC mg)
		246	{
		247	int old_errno = errno;
		248	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		249	errno = old_errno;
		250
		251	mg->mg_obj = 0; /* just in case */
		252
		253	SvREADONLY_off (sv);
		254
		255	if (SvPVX (sv) != mg->mg_ptr)
		256	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		257
		258	SvCUR_set (sv, 0);
		259	SvPVX (sv) = 0;
		260	SvOK_off (sv);
		261
		262	return 0;
		263	}
		264
		265	static MGVTBL mmap_vtbl = {
		266	0, 0, 0, 0, mmap_free
31	};	267	};
32		268
33	typedef struct aio_cb {	269	static int ecb_cold
34	struct aio_cb *volatile next;	270	sysfree_free (pTHX_ SV sv, MAGIC mg)
		271	{
		272	free (mg->mg_ptr);
		273	mg->mg_obj = 0; /* just in case */
35		274
36	int type;	275	SvREADONLY_off (sv);
37		276
38	int fd;	277	if (SvPVX (sv) != mg->mg_ptr)
39	off_t offset;	278	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
40	size_t length;
41	ssize_t result;
42	mode_t mode; /* open */
43	int errorno;
44	SV data, callback;
45	void *dataptr;
46	STRLEN dataoffset;
47		279
48	Stat_t *statdata;	280	SvCUR_set (sv, 0);
49	} aio_cb;	281	SvPVX (sv) = 0;
		282	SvOK_off (sv);
50		283
51	typedef aio_cb *aio_req;	284	return 0;
		285	}
52		286
53	static int started;	287	static MGVTBL sysfree_vtbl = {
54	static int nreqs;	288	0, 0, 0, 0, sysfree_free
55	static int max_outstanding = 1<<30;	289	};
56	static int respipe [2];
57		290
58	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	291	/*****************************************************************************/
59	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61		292
62	static volatile aio_req reqs, reqe; /* queue start, queue end */	293	/* helper: set scalar to foreign ptr with custom free */
63	static volatile aio_req ress, rese; /* queue start, queue end */
64
65	static void	294	static void
66	poll_wait ()	295	sv_set_foreign (SV sv, const MGVTBL const vtbl, void *addr, IV length)
67	{	296	{
68	if (!nreqs)	297	sv_force_normal (sv);
		298
		299	/* we store the length in mg_obj, as namlen is I32 :/ */
		300	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		301	->mg_obj = (SV *)length;
		302
		303	SvUPGRADE (sv, SVt_PV); /* nop... */
		304
		305	if (SvLEN (sv))
		306	Safefree (SvPVX (sv));
		307
		308	SvPVX (sv) = (char *)addr;
		309	SvCUR_set (sv, length);
		310	SvLEN_set (sv, 0);
		311	SvPOK_only (sv);
		312	}
		313
		314	static void
		315	sv_clear_foreign (SV *sv)
		316	{
		317	/* todo: iterate over magic and only free ours, but of course */
		318	/* the perl5porters will call that (correct) behaviour buggy */
		319	sv_unmagic (sv, FOREIGN_MAGIC);
		320	}
		321
		322	/*****************************************************************************/
		323
		324	/* defines all sorts of constants to 0 unless they are already defined */
		325	/* also provides const_iv_ and const_niv_ macros for them */
		326	#include "def0.h"
		327
		328	/*****************************************************************************/
		329
		330	static void
		331	fiemap (eio_req *req)
		332	{
		333	req->result = -1;
		334
		335	#if HAVE_FIEMAP
		336	/* assume some c99 */
		337	struct fiemap *fiemap = 0;
		338	size_t end_offset;
		339	int count = req->int3;
		340
		341	req->flags \|= EIO_FLAG_PTR1_FREE;
		342
		343	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		344	/* increase in 3.5kb steps */
		345	if (count < 0)
		346	count = 8;
		347
		348	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		349	errno = ENOMEM;
		350	if (!fiemap)
69	return;	351	return;
70		352
71	fd_set rfd;	353	req->ptr1 = fiemap;
72	FD_ZERO(&rfd);
73	FD_SET(respipe [0], &rfd);
74		354
75	select (respipe [0] + 1, &rfd, 0, 0, 0);	355	fiemap->fm_start = req->offs;
76	}	356	fiemap->fm_length = req->size;
		357	fiemap->fm_flags = req->int2;
		358	fiemap->fm_extent_count = count;
77		359
78	static int	360	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
79	poll_cb ()	361	return;
80	{	362
81	dSP;	363	if (req->int3 >= 0 /* not autosizing */
82	int count = 0;	364	\|\| !fiemap->fm_mapped_extents /* no more extents */
83	aio_req req;	365	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
84		366	goto done;
85	{	367
86	/* read and signals sent by the worker threads */	368	/* else we have to loop -
87	char buf [32];	369	* it would be tempting (actually I tried that first) to just query the
88	while (read (respipe [0], buf, 32) > 0)	370	* number of extents needed, but linux often feels like not returning all
89	;	371	* extents, without telling us it left any out. this complicates
90	}	372	* this quite a bit.
		373	*/
		374
		375	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
91		376
92	for (;;)	377	for (;;)
93	{	378	{
94	pthread_mutex_lock (&reslock);	379	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		380	char scratch[3072];
		381	struct fiemap incmap = (struct fiemap )scratch;
95		382
96	req = ress;	383	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		384	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		385	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		386	incmap->fm_flags = fiemap->fm_flags;
		387	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
97		388
98	if (ress)	389	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		390	return;
		391
		392	if (!incmap->fm_mapped_extents)
		393	goto done;
		394
		395	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		396	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		397	errno = ENOMEM;
		398	if (!fiemap)
		399	return;
		400
		401	req->ptr1 = fiemap;
		402
		403	for (count = 0; count < incmap->fm_mapped_extents; ++count)
99	{	404	{
100	ress = ress->next;	405	struct fiemap_extent *e = incmap->fm_extents + count;
101	if (!ress) rese = 0;	406
		407	if (e->fe_logical + e->fe_length >= end_offset)
		408	goto done;
		409
		410	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		411
		412	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		413	goto done;
		414
102	}	415	}
		416	}
103		417
104	pthread_mutex_unlock (&reslock);	418	done:
		419	req->result = 0;
105		420
106	if (!req)	421	#else
107	break;	422	errno = ENOSYS;
		423	#endif
		424	}
108		425
109	nreqs--;	426	/*****************************************************************************/
110		427
111	if (req->type == REQ_QUIT)	428	static int close_fd; /* dummy fd to close fds via dup2 */
112	started--;	429
113	else	430	enum {
		431	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		432	};
		433
		434	typedef eio_req *aio_req;
		435	typedef eio_req *aio_req_ornot;
		436	typedef eio_wd aio_wd;
		437
		438	static SV *on_next_submit;
		439	static int next_pri = EIO_PRI_DEFAULT;
		440	static int max_outstanding;
		441
		442	static s_epipe respipe;
		443
		444	static void req_destroy (aio_req req);
		445	static void req_cancel (aio_req req);
		446
		447	static void
		448	want_poll (void)
		449	{
		450	/* write a dummy byte to the pipe so fh becomes ready */
		451	s_epipe_signal (&respipe);
		452	}
		453
		454	static void
		455	done_poll (void)
		456	{
		457	/* read any signals sent by the worker threads */
		458	s_epipe_drain (&respipe);
		459	}
		460
		461	/* must be called at most once */
		462	static SV *
		463	req_sv (aio_req req, HV *stash)
		464	{
		465	if (!req->self)
		466	{
		467	req->self = (SV *)newHV ();
		468	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		469	}
		470
		471	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		472	}
		473
		474	static SV *
		475	newSVaio_wd (aio_wd wd)
		476	{
		477	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		478	}
		479
		480	static aio_req
		481	SvAIO_REQ (SV *sv)
		482	{
		483	MAGIC *mg;
		484
		485	if (!SvROK (sv)
		486	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		487	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		488	&& SvSTASH (SvRV (sv)) != aio_req_stash
		489	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		490	croak ("object of class IO::AIO::REQ expected");
		491
		492	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		493
		494	return mg ? (aio_req)mg->mg_ptr : 0;
		495	}
		496
		497	static aio_wd
		498	SvAIO_WD (SV *sv)
		499	{
		500	if (!SvROK (sv)
		501	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		502	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		503	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		504
		505	return (aio_wd)(long)SvIVX (SvRV (sv));
		506	}
		507
		508	static SV *
		509	newmortalFH (int fd, int flags)
		510	{
		511	if (fd < 0)
		512	return &PL_sv_undef;
		513
		514	GV gv = (GV )sv_newmortal ();
		515	char sym[64];
		516	int symlen;
		517
		518	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		519	gv_init (gv, aio_stash, sym, symlen, 0);
		520
		521	symlen = snprintf (
		522	sym,
		523	sizeof (sym),
		524	"%s&=%d",
		525	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		526	fd
		527	);
		528
		529	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		530	? (SV *)gv : &PL_sv_undef;
		531	}
		532
		533	static void
		534	aio_grp_feed (aio_req grp)
		535	{
		536	if (grp->sv2 && SvOK (grp->sv2))
		537	{
		538	dSP;
		539
		540	ENTER;
		541	SAVETMPS;
		542	PUSHMARK (SP);
		543	XPUSHs (req_sv (grp, aio_grp_stash));
		544	PUTBACK;
		545	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
		546	SPAGAIN;
		547	FREETMPS;
		548	LEAVE;
		549	}
		550	}
		551
		552	static void
		553	req_submit (eio_req *req)
		554	{
		555	eio_submit (req);
		556
		557	if (expect_false (on_next_submit))
		558	{
		559	dSP;
		560	SV *cb = sv_2mortal (on_next_submit);
		561
		562	on_next_submit = 0;
		563
		564	PUSHMARK (SP);
		565	PUTBACK;
		566	call_sv (cb, G_DISCARD \| G_EVAL);
		567	}
		568	}
		569
		570	static int
		571	req_invoke (eio_req *req)
		572	{
		573	if (req->flags & FLAG_SV2_RO_OFF)
		574	SvREADONLY_off (req->sv2);
		575
		576	if (!EIO_CANCELLED (req) && req->callback)
		577	{
		578	dSP;
		579	static SV sv_result_cache; / caches the result integer SV */
		580	SV *sv_result;
		581
		582	ENTER;
		583	SAVETMPS;
		584	PUSHMARK (SP);
		585	EXTEND (SP, 1);
		586
		587	/* do not recreate the result IV from scratch each time */
		588	if (expect_true (sv_result_cache))
114	{	589	{
115	int errorno = errno;	590	sv_result = sv_result_cache; sv_result_cache = 0;
116	errno = req->errorno;	591	SvIV_set (sv_result, req->result);
117		592	SvIOK_only (sv_result);
118	if (req->type == REQ_READ)
119	SvCUR_set (req->data, req->dataoffset
120	+ req->result > 0 ? req->result : 0);
121
122	if (req->data)
123	SvREFCNT_dec (req->data);
124
125	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
126	{
127	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128	PL_laststatval = req->result;
129	PL_statcache = *(req->statdata);
130
131	Safefree (req->statdata);
132	}
133
134	PUSHMARK (SP);
135	XPUSHs (sv_2mortal (newSViv (req->result)));
136
137	if (req->type == REQ_OPEN)
138	{
139	/* convert fd to fh */
140	SV *fh;
141
142	PUTBACK;
143	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
144	SPAGAIN;
145
146	fh = POPs;
147
148	PUSHMARK (SP);
149	XPUSHs (fh);
150	}
151
152	if (SvOK (req->callback))
153	{
154	PUTBACK;
155	call_sv (req->callback, G_VOID \| G_EVAL);
156	SPAGAIN;
157	}
158
159	if (req->callback)
160	SvREFCNT_dec (req->callback);
161
162	errno = errorno;
163	count++;
164	}
165
166	Safefree (req);
167	}
168
169	return count;
170	}
171
172	static void aio_proc(void arg);
173
174	static void
175	start_thread (void)
176	{
177	sigset_t fullsigset, oldsigset;
178	pthread_t tid;
179	pthread_attr_t attr;
180
181	pthread_attr_init (&attr);
182	pthread_attr_setstacksize (&attr, STACKSIZE);
183	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184
185	sigfillset (&fullsigset);
186	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
187
188	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
189	started++;
190
191	sigprocmask (SIG_SETMASK, &oldsigset, 0);
192	}
193
194	static void
195	send_req (aio_req req)
196	{
197	nreqs++;
198
199	pthread_mutex_lock (&reqlock);
200
201	req->next = 0;
202
203	if (reqe)
204	{
205	reqe->next = req;
206	reqe = req;
207	}
208	else
209	reqe = reqs = req;
210
211	pthread_cond_signal (&reqwait);
212	pthread_mutex_unlock (&reqlock);
213
214	while (nreqs > max_outstanding)
215	{
216	poll_wait ();
217	poll_cb ();
218	}
219	}
220
221	static void
222	end_thread (void)
223	{
224	aio_req req;
225	New (0, req, 1, aio_cb);
226	req->type = REQ_QUIT;
227
228	send_req (req);
229	}
230
231	static void
232	read_write (int dowrite, int fd, off_t offset, size_t length,
233	SV data, STRLEN dataoffset, SV callback)
234	{
235	aio_req req;
236	STRLEN svlen;
237	char *svptr = SvPV (data, svlen);
238
239	SvUPGRADE (data, SVt_PV);
240	SvPOK_on (data);
241
242	if (dataoffset < 0)
243	dataoffset += svlen;
244
245	if (dataoffset < 0 \|\| dataoffset > svlen)
246	croak ("data offset outside of string");
247
248	if (dowrite)
249	{
250	/* write: check length and adjust. */
251	if (length < 0 \|\| length + dataoffset > svlen)
252	length = svlen - dataoffset;
253	}
254	else
255	{
256	/* read: grow scalar as necessary */
257	svptr = SvGROW (data, length + dataoffset);
258	}
259
260	if (length < 0)
261	croak ("length must not be negative");
262
263	Newz (0, req, 1, aio_cb);
264
265	if (!req)
266	croak ("out of memory during aio_req allocation");
267
268	req->type = dowrite ? REQ_WRITE : REQ_READ;
269	req->fd = fd;
270	req->offset = offset;
271	req->length = length;
272	req->data = SvREFCNT_inc (data);
273	req->dataptr = (char *)svptr + dataoffset;
274	req->callback = SvREFCNT_inc (callback);
275
276	send_req (req);
277	}
278
279	static void *
280	aio_proc (void *thr_arg)
281	{
282	aio_req req;
283	int type;
284
285	do
286	{
287	pthread_mutex_lock (&reqlock);
288
289	for (;;)
290	{
291	req = reqs;
292
293	if (reqs)
294	{
295	reqs = reqs->next;
296	if (!reqs) reqe = 0;
297	}
298
299	if (req)
300	break;
301
302	pthread_cond_wait (&reqwait, &reqlock);
303	}
304
305	pthread_mutex_unlock (&reqlock);
306
307	errno = 0; /* strictly unnecessary */
308
309	type = req->type;
310
311	switch (type)
312	{
313	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
314	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
315	#if SYS_readahead
316	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317	#else
318	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319	#endif
320
321	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324
325	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326	case REQ_CLOSE: req->result = close (req->fd); break;
327	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
328
329	case REQ_FSYNC: req->result = fsync (req->fd); break;
330	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331
332	case REQ_QUIT:
333	break;
334
335	default:
336	req->result = ENOSYS;
337	break;
338	}
339
340	req->errorno = errno;
341
342	pthread_mutex_lock (&reslock);
343
344	req->next = 0;
345
346	if (rese)
347	{
348	rese->next = req;
349	rese = req;
350	}	593	}
351	else	594	else
352	{	595	{
353	rese = ress = req;	596	sv_result = newSViv (req->result);
354		597	SvREADONLY_on (sv_result);
355	/* write a dummy byte to the pipe so fh becomes ready */
356	write (respipe [1], &respipe, 1);
357	}	598	}
358		599
359	pthread_mutex_unlock (&reslock);	600	switch (req->type)
		601	{
		602	case EIO_WD_OPEN:
		603	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		604	break;
		605
		606	case EIO_READDIR:
		607	{
		608	SV *rv = &PL_sv_undef;
		609
		610	if (req->result >= 0)
		611	{
		612	int i;
		613	char names = (char )req->ptr2;
		614	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
		615	AV *av = newAV ();
		616
		617	av_extend (av, req->result - 1);
		618
		619	for (i = 0; i < req->result; ++i)
		620	{
		621	if (req->int1 & EIO_READDIR_DENTS)
		622	{
		623	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		624
		625	if (req->int1 & EIO_READDIR_CUSTOM2)
		626	{
		627	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		628	AV *avent = newAV ();
		629
		630	av_extend (avent, 2);
		631
		632	if (!sv_type [ent->type])
		633	{
		634	sv_type [ent->type] = newSViv (ent->type);
		635	SvREADONLY_on (sv_type [ent->type]);
		636	}
		637
		638	av_store (avent, 0, namesv);
		639	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		640	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		641
		642	av_store (av, i, newRV_noinc ((SV *)avent));
		643	}
		644	else
		645	av_store (av, i, namesv);
		646
		647	++ent;
		648	}
		649	else
		650	{
		651	SV *name = newSVpv (names, 0);
		652	av_store (av, i, name);
		653	names += SvCUR (name) + 1;
		654	}
		655	}
		656
		657	rv = sv_2mortal (newRV_noinc ((SV *)av));
		658	}
		659
		660	PUSHs (rv);
		661
		662	if (req->int1 & EIO_READDIR_CUSTOM1)
		663	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
		664	}
		665	break;
		666
		667	case EIO_OPEN:
		668	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR)));
		669	break;
		670
		671	case EIO_STATVFS:
		672	case EIO_FSTATVFS:
		673	{
		674	SV *rv = &PL_sv_undef;
		675
		676	#ifndef _WIN32
		677	if (req->result >= 0)
		678	{
		679	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		680	HV *hv = newHV ();
		681	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		682	* chooses to make it a struct.
		683	*/
		684	unsigned long fsid = 0;
		685	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		686
		687	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		688
		689	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		690	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		691	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		692	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		693	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		694	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		695	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		696	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		697	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		698	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		699	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		700	}
		701	#endif
		702
		703	PUSHs (rv);
		704	}
		705
		706	break;
		707
		708	case EIO_GROUP:
		709	req->int1 = 2; /* mark group as finished */
		710
		711	if (req->sv1)
		712	{
		713	int i;
		714	AV av = (AV )req->sv1;
		715
		716	EXTEND (SP, AvFILL (av) + 1);
		717	for (i = 0; i <= AvFILL (av); ++i)
		718	PUSHs (*av_fetch (av, i, 0));
		719	}
		720	break;
		721
		722	case EIO_NOP:
		723	case EIO_BUSY:
		724	break;
		725
		726	case EIO_READLINK:
		727	case EIO_REALPATH:
		728	if (req->result > 0)
		729	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		730	break;
		731
		732	case EIO_STAT:
		733	case EIO_LSTAT:
		734	case EIO_FSTAT:
		735	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		736
		737	if (!(PL_laststatval = req->result))
		738	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		739	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		740
		741	PUSHs (sv_result);
		742	break;
		743
		744	case EIO_SEEK:
		745	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		746	break;
		747
		748	case EIO_READ:
		749	{
		750	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		751	*SvEND (req->sv2) = 0;
		752	SvPOK_only (req->sv2);
		753	SvSETMAGIC (req->sv2);
		754	PUSHs (sv_result);
		755	}
		756	break;
		757
		758	case EIO_SLURP:
		759	{
		760	if (req->result >= 0)
		761	{
		762	/* if length was originally not known, we steal the malloc'ed memory */
		763	if (req->flags & EIO_FLAG_PTR2_FREE)
		764	{
		765	req->flags &= ~EIO_FLAG_PTR2_FREE;
		766	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		767	}
		768	else
		769	{
		770	SvCUR_set (req->sv2, req->result);
		771	*SvEND (req->sv2) = 0;
		772	SvPOK_only (req->sv2);
		773	}
		774
		775	SvSETMAGIC (req->sv2);
		776	}
		777
		778	PUSHs (sv_result);
		779	}
		780	break;
		781
		782	case EIO_CUSTOM:
		783	if (req->feed == fiemap)
		784	{
		785	#if HAVE_FIEMAP
		786	if (!req->result)
		787	{
		788	struct fiemap fiemap = (struct fiemap )req->ptr1;
		789
		790	if (fiemap->fm_extent_count)
		791	{
		792	AV *av = newAV ();
		793	int i;
		794
		795	while (fiemap->fm_mapped_extents)
		796	{
		797	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		798	AV *ext_av = newAV ();
		799
		800	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		801	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		802	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		803	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		804
		805	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		806	}
		807
		808	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		809	}
		810	else
		811	{
		812	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		813	PUSHs (sv_result);
		814	}
		815	}
		816	#endif
		817	}
		818	else
		819	PUSHs (sv_result);
		820	break;
		821
		822	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		823	if (req->result > 0)
		824	SvIV_set (sv_result, 0);
		825	/* FALLTHROUGH */
		826
		827	default:
		828	PUSHs (sv_result);
		829	break;
		830	}
		831
		832	errno = req->errorno;
		833
		834	PUTBACK;
		835	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
		836	SPAGAIN;
		837
		838	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		839	SvREFCNT_dec (sv_result);
		840	else
		841	sv_result_cache = sv_result;
		842
		843	FREETMPS;
		844	LEAVE;
		845
		846	PUTBACK;
360	}	847	}
361	while (type != REQ_QUIT);
362		848
		849	return !!SvTRUE (ERRSV);
		850	}
		851
		852	static void
		853	req_destroy (aio_req req)
		854	{
		855	if (req->self)
		856	{
		857	sv_unmagic (req->self, PERL_MAGIC_ext);
		858	SvREFCNT_dec (req->self);
		859	}
		860
		861	SvREFCNT_dec (req->sv1);
		862	SvREFCNT_dec (req->sv2);
		863	SvREFCNT_dec (req->sv3);
		864	SvREFCNT_dec (req->sv4);
		865	SvREFCNT_dec (req->callback);
		866
		867	free (req);
		868	}
		869
		870	static void
		871	req_cancel_subs (aio_req grp)
		872	{
		873	if (grp->type != EIO_GROUP)
		874	return;
		875
		876	SvREFCNT_dec (grp->sv2);
		877	grp->sv2 = 0;
		878
		879	eio_grp_cancel (grp);
		880	}
		881
		882	static void ecb_cold
		883	create_respipe (void)
		884	{
		885	if (s_epipe_renew (&respipe))
		886	croak ("IO::AIO: unable to initialize result pipe");
		887	}
		888
		889	static void
		890	poll_wait (void)
		891	{
		892	while (eio_nreqs ())
		893	{
		894	int size;
		895
		896	X_LOCK (EIO_POOL->reslock);
		897	size = EIO_POOL->res_queue.size;
		898	X_UNLOCK (EIO_POOL->reslock);
		899
		900	if (size)
		901	return;
		902
		903	etp_maybe_start_thread (EIO_POOL);
		904
		905	s_epipe_wait (&respipe);
		906	}
		907	}
		908
		909	static int
		910	poll_cb (void)
		911	{
		912	for (;;)
		913	{
		914	int res = eio_poll ();
		915
		916	if (res > 0)
		917	croak (0);
		918
		919	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		920	return res;
		921
		922	poll_wait ();
		923	}
		924	}
		925
		926	static void ecb_cold
		927	reinit (void)
		928	{
		929	create_respipe ();
		930
		931	if (eio_init (want_poll, done_poll) < 0)
		932	croak ("IO::AIO: unable to initialise eio library");
		933	}
		934
		935	/*****************************************************************************/
		936
		937	static SV *
		938	get_cb (SV *cb_sv)
		939	{
		940	SvGETMAGIC (cb_sv);
		941	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		942	}
		943
		944	static aio_req ecb_noinline
		945	dreq (SV *callback)
		946	{
		947	SV *cb_cv;
		948	aio_req req;
		949	int req_pri = next_pri;
		950	next_pri = EIO_PRI_DEFAULT;
		951
		952	cb_cv = get_cb (callback);
		953
		954	req = calloc (sizeof (*req), 1);
		955	if (!req)
		956	croak ("out of memory during eio_req allocation");
		957
		958	req->callback = SvREFCNT_inc (cb_cv);
		959	req->pri = req_pri;
		960
363	return 0;	961	return req;
364	}	962	}
		963
		964	#define dREQ \
		965	aio_req req = dreq (callback); \
		966
		967	#define REQ_SEND \
		968	PUTBACK; \
		969	req_submit (req); \
		970	SPAGAIN; \
		971	\
		972	if (GIMME_V != G_VOID) \
		973	XPUSHs (req_sv (req, aio_req_stash));
		974
		975	ecb_inline void
		976	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		977	{
		978	if (expect_false (SvROK (path)))
		979	{
		980	SV *rv = SvRV (path);
		981	SV *wdob;
		982
		983	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		984	{
		985	path = AvARRAY (rv)[1];
		986	wdob = AvARRAY (rv)[0];
		987
		988	if (SvOK (wdob))
		989	{
		990	*wd = SvAIO_WD (wdob);
		991	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		992	}
		993	else
		994	*wd = EIO_INVALID_WD;
		995	}
		996	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		997	{
		998	*wd = (aio_wd)(long)SvIVX (rv);
		999	*wdsv = SvREFCNT_inc_NN (rv);
		1000	*ptr = ".";
		1001	return; /* path set to "." */
		1002	}
		1003	else
		1004	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		1005	}
		1006
		1007	*pathsv = newSVsv (path);
		1008	ptr = SvPVbyte_nolen (pathsv);
		1009	}
		1010
		1011	static void ecb_noinline
		1012	req_set_path1 (aio_req req, SV *path)
		1013	{
		1014	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		1015	}
		1016
		1017	static void ecb_noinline
		1018	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		1019	{
		1020	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1021
		1022	switch (SvTYPE (rv))
		1023	{
		1024	case SVt_PVIO:
		1025	case SVt_PVLV:
		1026	case SVt_PVGV:
		1027	req->type = type_fh;
		1028	req->sv1 = newSVsv (fh_or_path);
		1029	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1030	break;
		1031
		1032	default:
		1033	req->type = type_path;
		1034	req_set_path1 (req, fh_or_path);
		1035	break;
		1036	}
		1037	}
		1038
		1039	/*****************************************************************************/
		1040
		1041	static void
		1042	ts_set (struct timespec *ts, NV value)
		1043	{
		1044	ts->tv_sec = value;
		1045	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1046	}
		1047
		1048	static NV
		1049	ts_get (const struct timespec *ts)
		1050	{
		1051	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1052	}
		1053
		1054	/*****************************************************************************/
		1055
		1056	XS(boot_IO__AIO) ecb_cold;
365		1057
366	MODULE = IO::AIO PACKAGE = IO::AIO	1058	MODULE = IO::AIO PACKAGE = IO::AIO
367		1059
368	PROTOTYPES: ENABLE	1060	PROTOTYPES: ENABLE
369		1061
370	BOOT:	1062	BOOT:
371	{	1063	{
372	if (pipe (respipe))	1064	static const struct {
373	croak ("unable to initialize result pipe");	1065	const char *name;
		1066	IV iv;
		1067	} *civ, const_iv[] = {
		1068	# define const_niv(name, value) { # name, (IV) value },
		1069	# define const_iv(name) { # name, (IV) name },
		1070	# define const_eio(name) { # name, (IV) EIO_ ## name },
374		1071
375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1072	/* you have to re-run ./gendef0 after adding/removing any constants here */
376	croak ("cannot set result pipe to nonblocking mode");	1073	/* the first block can be undef if missing */
		1074	const_iv (ENOSYS)
		1075	const_iv (EXDEV)
		1076	const_iv (EBADR)
377		1077
378	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	1078	/* for lseek */
379	croak ("cannot set result pipe to nonblocking mode");	1079	const_iv (SEEK_DATA)
380	}	1080	const_iv (SEEK_HOLE)
381		1081
		1082	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1083	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1084	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1085	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1086	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1087	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1088
		1089	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1090	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1091	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1092	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1093	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1094
		1095	/* the second block will be 0 when missing */
		1096	const_iv (O_ACCMODE)
		1097
		1098	const_iv (O_RDONLY)
		1099	const_iv (O_WRONLY)
		1100	const_iv (O_RDWR)
		1101	const_iv (O_CREAT)
		1102	const_iv (O_TRUNC)
		1103	const_iv (O_EXCL)
		1104	const_iv (O_APPEND)
		1105
		1106	const_iv (O_ASYNC)
		1107	const_iv (O_DIRECT)
		1108	const_iv (O_NOATIME)
		1109
		1110	const_iv (O_CLOEXEC)
		1111	const_iv (O_NOCTTY)
		1112	const_iv (O_NOFOLLOW)
		1113	const_iv (O_NONBLOCK)
		1114	const_iv (O_EXEC)
		1115	const_iv (O_SEARCH)
		1116	const_iv (O_DIRECTORY)
		1117	const_iv (O_DSYNC)
		1118	const_iv (O_RSYNC)
		1119	const_iv (O_SYNC)
		1120	const_iv (O_PATH)
		1121	const_iv (O_TMPFILE)
		1122	const_iv (O_TTY_INIT)
		1123
		1124	const_iv (S_IFIFO)
		1125	const_iv (S_IFCHR)
		1126	const_iv (S_IFBLK)
		1127	const_iv (S_IFLNK)
		1128	const_iv (S_IFREG)
		1129	const_iv (S_IFDIR)
		1130	const_iv (S_IFWHT)
		1131	const_iv (S_IFSOCK)
		1132	const_iv (S_IFMT)
		1133
		1134	const_iv (ST_RDONLY)
		1135	const_iv (ST_NOSUID)
		1136	const_iv (ST_NODEV)
		1137	const_iv (ST_NOEXEC)
		1138	const_iv (ST_SYNCHRONOUS)
		1139	const_iv (ST_MANDLOCK)
		1140	const_iv (ST_WRITE)
		1141	const_iv (ST_APPEND)
		1142	const_iv (ST_IMMUTABLE)
		1143	const_iv (ST_NOATIME)
		1144	const_iv (ST_NODIRATIME)
		1145	const_iv (ST_RELATIME)
		1146
		1147	const_iv (PROT_NONE)
		1148	const_iv (PROT_EXEC)
		1149	const_iv (PROT_READ)
		1150	const_iv (PROT_WRITE)
		1151
		1152	const_iv (MAP_PRIVATE)
		1153	const_iv (MAP_SHARED)
		1154	const_iv (MAP_FIXED)
		1155	const_iv (MAP_ANONYMOUS)
		1156
		1157	/* linuxish */
		1158	const_iv (MAP_LOCKED)
		1159	const_iv (MAP_NORESERVE)
		1160	const_iv (MAP_POPULATE)
		1161	const_iv (MAP_NONBLOCK)
		1162	const_iv (MAP_GROWSDOWN)
		1163	const_iv (MAP_32BIT)
		1164	const_iv (MAP_HUGETLB)
		1165	const_iv (MAP_STACK)
		1166
		1167	const_iv (MREMAP_MAYMOVE)
		1168	const_iv (MREMAP_FIXED)
		1169
		1170	const_iv (F_DUPFD_CLOEXEC)
		1171
		1172	const_iv (MSG_CMSG_CLOEXEC)
		1173	const_iv (SOCK_CLOEXEC)
		1174
		1175	const_iv (F_OFD_GETLK)
		1176	const_iv (F_OFD_SETLK)
		1177	const_iv (F_OFD_GETLKW)
		1178
		1179	const_iv (FIFREEZE)
		1180	const_iv (FITHAW)
		1181	const_iv (FITRIM)
		1182	const_iv (FICLONE)
		1183	const_iv (FICLONERANGE)
		1184	const_iv (FIDEDUPERANGE)
		1185
		1186	const_iv (FS_IOC_GETFLAGS)
		1187	const_iv (FS_IOC_SETFLAGS)
		1188	const_iv (FS_IOC_GETVERSION)
		1189	const_iv (FS_IOC_SETVERSION)
		1190	const_iv (FS_IOC_FIEMAP)
		1191	const_iv (FS_IOC_FSGETXATTR)
		1192	const_iv (FS_IOC_FSSETXATTR)
		1193	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1194	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1195	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1196
		1197	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1198
		1199	const_iv (FS_SECRM_FL)
		1200	const_iv (FS_UNRM_FL)
		1201	const_iv (FS_COMPR_FL)
		1202	const_iv (FS_SYNC_FL)
		1203	const_iv (FS_IMMUTABLE_FL)
		1204	const_iv (FS_APPEND_FL)
		1205	const_iv (FS_NODUMP_FL)
		1206	const_iv (FS_NOATIME_FL)
		1207	const_iv (FS_DIRTY_FL)
		1208	const_iv (FS_COMPRBLK_FL)
		1209	const_iv (FS_NOCOMP_FL)
		1210	const_iv (FS_ENCRYPT_FL)
		1211	const_iv (FS_BTREE_FL)
		1212	const_iv (FS_INDEX_FL)
		1213	const_iv (FS_JOURNAL_DATA_FL)
		1214	const_iv (FS_NOTAIL_FL)
		1215	const_iv (FS_DIRSYNC_FL)
		1216	const_iv (FS_TOPDIR_FL)
		1217	const_iv (FS_FL_USER_MODIFIABLE)
		1218
		1219	const_iv (FS_XFLAG_REALTIME)
		1220	const_iv (FS_XFLAG_PREALLOC)
		1221	const_iv (FS_XFLAG_IMMUTABLE)
		1222	const_iv (FS_XFLAG_APPEND)
		1223	const_iv (FS_XFLAG_SYNC)
		1224	const_iv (FS_XFLAG_NOATIME)
		1225	const_iv (FS_XFLAG_NODUMP)
		1226	const_iv (FS_XFLAG_RTINHERIT)
		1227	const_iv (FS_XFLAG_PROJINHERIT)
		1228	const_iv (FS_XFLAG_NOSYMLINKS)
		1229	const_iv (FS_XFLAG_EXTSIZE)
		1230	const_iv (FS_XFLAG_EXTSZINHERIT)
		1231	const_iv (FS_XFLAG_NODEFRAG)
		1232	const_iv (FS_XFLAG_FILESTREAM)
		1233	const_iv (FS_XFLAG_DAX)
		1234	const_iv (FS_XFLAG_HASATTR)
		1235
		1236	const_iv (FIEMAP_FLAG_SYNC)
		1237	const_iv (FIEMAP_FLAG_XATTR)
		1238	const_iv (FIEMAP_FLAGS_COMPAT)
		1239	const_iv (FIEMAP_EXTENT_LAST)
		1240	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1241	const_iv (FIEMAP_EXTENT_DELALLOC)
		1242	const_iv (FIEMAP_EXTENT_ENCODED)
		1243	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1244	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1245	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1246	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1247	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1248	const_iv (FIEMAP_EXTENT_MERGED)
		1249	const_iv (FIEMAP_EXTENT_SHARED)
		1250
		1251	const_iv (SPLICE_F_MOVE)
		1252	const_iv (SPLICE_F_NONBLOCK)
		1253	const_iv (SPLICE_F_MORE)
		1254	const_iv (SPLICE_F_GIFT)
		1255
		1256	const_iv (EFD_CLOEXEC)
		1257	const_iv (EFD_NONBLOCK)
		1258	const_iv (EFD_SEMAPHORE)
		1259
		1260	const_iv (CLOCK_REALTIME)
		1261	const_iv (CLOCK_MONOTONIC)
		1262	const_iv (CLOCK_BOOTTIME)
		1263	const_iv (CLOCK_REALTIME_ALARM)
		1264	const_iv (CLOCK_BOOTTIME_ALARM)
		1265
		1266	const_iv (TFD_NONBLOCK)
		1267	const_iv (TFD_CLOEXEC)
		1268
		1269	const_iv (TFD_TIMER_ABSTIME)
		1270	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1271
		1272	/* these are libeio constants, and are independent of gendef0 */
		1273	const_eio (SEEK_SET)
		1274	const_eio (SEEK_CUR)
		1275	const_eio (SEEK_END)
		1276
		1277	const_eio (MCL_FUTURE)
		1278	const_eio (MCL_CURRENT)
		1279	const_eio (MCL_ONFAULT)
		1280
		1281	const_eio (MS_ASYNC)
		1282	const_eio (MS_INVALIDATE)
		1283	const_eio (MS_SYNC)
		1284
		1285	const_eio (MT_MODIFY)
		1286
		1287	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1288	const_eio (SYNC_FILE_RANGE_WRITE)
		1289	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1290
		1291	const_eio (FALLOC_FL_KEEP_SIZE)
		1292	const_eio (FALLOC_FL_PUNCH_HOLE)
		1293	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1294	const_eio (FALLOC_FL_ZERO_RANGE)
		1295	const_eio (FALLOC_FL_INSERT_RANGE)
		1296	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1297
		1298	const_eio (RENAME_NOREPLACE)
		1299	const_eio (RENAME_EXCHANGE)
		1300	const_eio (RENAME_WHITEOUT)
		1301
		1302	const_eio (READDIR_DENTS)
		1303	const_eio (READDIR_DIRS_FIRST)
		1304	const_eio (READDIR_STAT_ORDER)
		1305	const_eio (READDIR_FOUND_UNKNOWN)
		1306
		1307	const_eio (DT_UNKNOWN)
		1308	const_eio (DT_FIFO)
		1309	const_eio (DT_CHR)
		1310	const_eio (DT_DIR)
		1311	const_eio (DT_BLK)
		1312	const_eio (DT_REG)
		1313	const_eio (DT_LNK)
		1314	const_eio (DT_SOCK)
		1315	const_eio (DT_WHT)
		1316	};
		1317
		1318	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1319	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1320	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1321	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1322
		1323	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1324	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1325
		1326	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1327
		1328	/* allocate dummy pipe fd for aio_close */
		1329	{
		1330	int pipefd [2];
		1331
		1332	if (
		1333	#ifdef _WIN32
		1334	_pipe (pipefd, 1, _O_BINARY) < 0
		1335	#else
		1336	pipe (pipefd) < 0
		1337	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1338	#endif
		1339	\|\| close (pipefd [1]) < 0
		1340	)
		1341	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1342
		1343	close_fd = pipefd [0];
		1344	}
		1345
		1346	reinit ();
		1347	}
		1348
382	void	1349	void
383	min_parallel(nthreads)	1350	reinit ()
384	int nthreads	1351	PROTOTYPE:
		1352
		1353	void
		1354	max_poll_reqs (unsigned int nreqs)
385	PROTOTYPE: $	1355	PROTOTYPE: $
386	CODE:	1356	CODE:
387	while (nthreads > started)	1357	eio_set_max_poll_reqs (nreqs);
388	start_thread ();
389		1358
390	void	1359	void
391	max_parallel(nthreads)	1360	max_poll_time (double nseconds)
392	int nthreads
393	PROTOTYPE: $	1361	PROTOTYPE: $
394	CODE:	1362	CODE:
		1363	eio_set_max_poll_time (nseconds);
		1364
		1365	void
		1366	min_parallel (unsigned int nthreads)
		1367	PROTOTYPE: $
		1368	CODE:
		1369	eio_set_min_parallel (nthreads);
		1370
		1371	void
		1372	max_parallel (unsigned int nthreads)
		1373	PROTOTYPE: $
		1374	CODE:
		1375	eio_set_max_parallel (nthreads);
		1376
		1377	void
		1378	max_idle (unsigned int nthreads)
		1379	PROTOTYPE: $
		1380	CODE:
		1381	eio_set_max_idle (nthreads);
		1382
		1383	void
		1384	idle_timeout (unsigned int seconds)
		1385	PROTOTYPE: $
		1386	CODE:
		1387	eio_set_idle_timeout (seconds);
		1388
		1389	void
		1390	max_outstanding (unsigned int maxreqs)
		1391	PROTOTYPE: $
		1392	CODE:
		1393	max_outstanding = maxreqs;
		1394
		1395	void
		1396	aio_wd (SV8 pathname, SV callback = &PL_sv_undef)
		1397	PPCODE:
395	{	1398	{
396	int cur = started;	1399	dREQ;
397	while (cur > nthreads)	1400
398	{	1401	req->type = EIO_WD_OPEN;
399	end_thread ();	1402	req_set_path1 (req, pathname);
400	cur--;	1403
		1404	REQ_SEND;
		1405	}
		1406
		1407	void
		1408	aio_open (SV8 pathname, int flags, int mode, SV callback = &PL_sv_undef)
		1409	PPCODE:
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_OPEN;
		1414	req_set_path1 (req, pathname);
		1415	req->int1 = flags;
		1416	req->int2 = mode;
		1417
		1418	REQ_SEND;
		1419	}
		1420
		1421	void
		1422	aio_fsync (SV fh, SV callback = &PL_sv_undef)
		1423	ALIAS:
		1424	aio_fsync = EIO_FSYNC
		1425	aio_fdatasync = EIO_FDATASYNC
		1426	aio_syncfs = EIO_SYNCFS
		1427	PPCODE:
		1428	{
		1429	int fd = s_fileno_croak (fh, 0);
		1430	dREQ;
		1431
		1432	req->type = ix;
		1433	req->sv1 = newSVsv (fh);
		1434	req->int1 = fd;
		1435
		1436	REQ_SEND;
		1437	}
		1438
		1439	void
		1440	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback = &PL_sv_undef)
		1441	PPCODE:
		1442	{
		1443	int fd = s_fileno_croak (fh, 0);
		1444	dREQ;
		1445
		1446	req->type = EIO_SYNC_FILE_RANGE;
		1447	req->sv1 = newSVsv (fh);
		1448	req->int1 = fd;
		1449	req->offs = offset;
		1450	req->size = nbytes;
		1451	req->int2 = flags;
		1452
		1453	REQ_SEND;
		1454	}
		1455
		1456	void
		1457	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback = &PL_sv_undef)
		1458	PPCODE:
		1459	{
		1460	int fd = s_fileno_croak (fh, 0);
		1461	dREQ;
		1462
		1463	req->type = EIO_FALLOCATE;
		1464	req->sv1 = newSVsv (fh);
		1465	req->int1 = fd;
		1466	req->int2 = mode;
		1467	req->offs = offset;
		1468	req->size = len;
		1469
		1470	REQ_SEND;
		1471	}
		1472
		1473	void
		1474	aio_close (SV fh, SV callback = &PL_sv_undef)
		1475	PPCODE:
		1476	{
		1477	dREQ;
		1478	int fd = s_fileno_croak (fh, 0);
		1479
		1480	/* partially duplicate logic in s_fileno */
		1481	SvGETMAGIC (fh);
		1482
		1483	if (SvROK (fh))
		1484	{
		1485	fh = SvRV (fh);
		1486	SvGETMAGIC (fh);
		1487	}
		1488
		1489	if (SvTYPE (fh) == SVt_PVGV)
		1490	{
		1491	/* perl filehandle */
		1492	PerlIOUnix_refcnt_inc (fd);
		1493	do_close ((GV *)fh, 1);
		1494
		1495	req->type = EIO_CLOSE;
		1496	req->int1 = fd;
		1497	/req->sv2 = newSVsv (fh);/ /* since we stole the fd, no need to keep the fh */
401	}	1498	}
		1499	else
		1500	{
		1501	/* fd number */
		1502	req->type = EIO_DUP2;
		1503	req->int1 = close_fd;
		1504	req->sv2 = newSVsv (fh);
		1505	req->int2 = fd;
		1506	}
402		1507
403	while (started > nthreads)	1508	REQ_SEND;
		1509	}
		1510
		1511	void
		1512	aio_seek (SV fh, SV offset, int whence, SV *callback = &PL_sv_undef)
		1513	PPCODE:
		1514	{
		1515	int fd = s_fileno_croak (fh, 0);
		1516	dREQ;
		1517
		1518	req->type = EIO_SEEK;
		1519	req->sv1 = newSVsv (fh);
		1520	req->int1 = fd;
		1521	req->offs = SvVAL64 (offset);
		1522	req->int2 = whence;
		1523
		1524	REQ_SEND;
		1525	}
		1526
		1527	void
		1528	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback = &PL_sv_undef)
		1529	ALIAS:
		1530	aio_read = EIO_READ
		1531	aio_write = EIO_WRITE
		1532	PPCODE:
		1533	{
		1534	STRLEN svlen;
		1535	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
		1536	char *svptr = SvPVbyte (data, svlen);
		1537	UV len = SvUV (length);
		1538
		1539	if (dataoffset < 0)
		1540	dataoffset += svlen;
		1541
		1542	if (dataoffset < 0 \|\| dataoffset > svlen)
		1543	croak ("dataoffset outside of data scalar");
		1544
		1545	if (ix == EIO_WRITE)
		1546	{
		1547	/* write: check length and adjust. */
		1548	if (!SvOK (length) \|\| len + dataoffset > svlen)
		1549	len = svlen - dataoffset;
		1550	}
		1551	else
		1552	{
		1553	/* read: check type and grow scalar as necessary */
		1554	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
		1555	svptr = sv_grow (data, len + dataoffset + 1);
		1556	else if (SvCUR (data) < len + dataoffset)
		1557	croak ("length + dataoffset outside of scalar, and cannot grow");
		1558	}
		1559
		1560	{
		1561	dREQ;
		1562
		1563	req->type = ix;
		1564	req->sv1 = newSVsv (fh);
		1565	req->int1 = fd;
		1566	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1567	req->size = len;
		1568	req->sv2 = SvREFCNT_inc (data);
		1569	req->ptr2 = (char *)svptr + dataoffset;
		1570	req->stroffset = dataoffset;
		1571
		1572	if (!SvREADONLY (data))
		1573	{
		1574	SvREADONLY_on (data);
		1575	req->flags \|= FLAG_SV2_RO_OFF;
		1576	}
		1577
		1578	REQ_SEND;
		1579	}
		1580	}
		1581
		1582	void
		1583	aio_ioctl (SV fh, unsigned long request, SV8 arg, SV *callback = &PL_sv_undef)
		1584	ALIAS:
		1585	aio_ioctl = EIO_IOCTL
		1586	aio_fcntl = EIO_FCNTL
		1587	PPCODE:
		1588	{
		1589	int fd = s_fileno_croak (fh, 0);
		1590	char *svptr;
		1591
		1592	if (SvPOK (arg) \|\| !SvNIOK (arg))
		1593	{
		1594	STRLEN svlen;
		1595	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1596	#ifdef IOCPARM_LEN
		1597	STRLEN need = IOCPARM_LEN (request);
		1598	#else
		1599	STRLEN need = 256;
		1600	#endif
		1601
		1602	if (svlen < need)
		1603	svptr = SvGROW (arg, need);
		1604	}
		1605	else
		1606	svptr = (char *)SvIV (arg);
		1607
		1608	{
		1609	dREQ;
		1610
		1611	req->type = ix;
		1612	req->sv1 = newSVsv (fh);
		1613	req->int1 = fd;
		1614	req->int2 = (long)request;
		1615	req->sv2 = SvREFCNT_inc (arg);
		1616	req->ptr2 = svptr;
		1617
		1618	REQ_SEND;
		1619	}
		1620	}
		1621
		1622	void
		1623	aio_readlink (SV8 pathname, SV callback = &PL_sv_undef)
		1624	ALIAS:
		1625	aio_readlink = EIO_READLINK
		1626	aio_realpath = EIO_REALPATH
		1627	PPCODE:
		1628	{
		1629	dREQ;
		1630
		1631	req->type = ix;
		1632	req_set_path1 (req, pathname);
		1633
		1634	REQ_SEND;
		1635	}
		1636
		1637	void
		1638	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1639	PPCODE:
		1640	{
		1641	int ifd = s_fileno_croak (in_fh , 0);
		1642	int ofd = s_fileno_croak (out_fh, 1);
		1643	dREQ;
		1644
		1645	req->type = EIO_SENDFILE;
		1646	req->sv1 = newSVsv (out_fh);
		1647	req->int1 = ofd;
		1648	req->sv2 = newSVsv (in_fh);
		1649	req->int2 = ifd;
		1650	req->offs = in_offset;
		1651	req->size = length;
		1652
		1653	REQ_SEND;
		1654	}
		1655
		1656	void
		1657	aio_readahead (SV fh, off_t offset, size_t length, SV callback = &PL_sv_undef)
		1658	PPCODE:
		1659	{
		1660	int fd = s_fileno_croak (fh, 0);
		1661	dREQ;
		1662
		1663	req->type = EIO_READAHEAD;
		1664	req->sv1 = newSVsv (fh);
		1665	req->int1 = fd;
		1666	req->offs = offset;
		1667	req->size = length;
		1668
		1669	REQ_SEND;
		1670	}
		1671
		1672	void
		1673	aio_stat (SV8 fh_or_path, SV callback = &PL_sv_undef)
		1674	ALIAS:
		1675	aio_stat = EIO_STAT
		1676	aio_lstat = EIO_LSTAT
		1677	aio_statvfs = EIO_STATVFS
		1678	PPCODE:
		1679	{
		1680	dREQ;
		1681
		1682	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1683
		1684	REQ_SEND;
		1685	}
		1686
		1687	void
		1688	st_xtime ()
		1689	ALIAS:
		1690	st_atime = 0x01
		1691	st_mtime = 0x02
		1692	st_ctime = 0x04
		1693	st_btime = 0x08
		1694	st_xtime = 0x0f
		1695	PPCODE:
		1696	EXTEND (SP, 4);
		1697	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1698	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1699	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1700	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1701
		1702	void
		1703	st_xtimensec ()
		1704	ALIAS:
		1705	st_atimensec = 0x01
		1706	st_mtimensec = 0x02
		1707	st_ctimensec = 0x04
		1708	st_btimensec = 0x08
		1709	st_xtimensec = 0x0f
		1710	st_btimesec = 0x10
		1711	st_gen = 0x20
		1712	PPCODE:
		1713	EXTEND (SP, 4);
		1714	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1715	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1716	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1717	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1718	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1719	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1720
		1721	UV
		1722	major (UV dev)
		1723	ALIAS:
		1724	minor = 1
		1725	CODE:
		1726	RETVAL = ix ? minor (dev) : major (dev);
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	UV
		1731	makedev (UV maj, UV min)
		1732	CODE:
		1733	RETVAL = makedev (maj, min);
		1734	OUTPUT:
		1735	RETVAL
		1736
		1737	void
		1738	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback = &PL_sv_undef)
		1739	PPCODE:
		1740	{
		1741	dREQ;
		1742
		1743	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1744	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1745	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1746
		1747	REQ_SEND;
		1748	}
		1749
		1750	void
		1751	aio_truncate (SV8 fh_or_path, SV offset, SV *callback = &PL_sv_undef)
		1752	PPCODE:
		1753	{
		1754	dREQ;
		1755
		1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1757	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1758
		1759	REQ_SEND;
		1760	}
		1761
		1762	void
		1763	aio_chmod (SV8 fh_or_path, int mode, SV callback = &PL_sv_undef)
		1764	PPCODE:
		1765	{
		1766	dREQ;
		1767
		1768	req->int2 = mode;
		1769	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1770
		1771	REQ_SEND;
		1772	}
		1773
		1774	void
		1775	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback = &PL_sv_undef)
		1776	PPCODE:
		1777	{
		1778	dREQ;
		1779
		1780	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1781	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1782	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1783
		1784	REQ_SEND;
		1785	}
		1786
		1787	void
		1788	aio_readdirx (SV8 pathname, IV flags, SV callback = &PL_sv_undef)
		1789	PPCODE:
		1790	{
		1791	dREQ;
		1792
		1793	req->type = EIO_READDIR;
		1794	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1795
		1796	if (flags & EIO_READDIR_DENTS)
		1797	req->int1 \|= EIO_READDIR_CUSTOM2;
		1798
		1799	req_set_path1 (req, pathname);
		1800
		1801	REQ_SEND;
		1802	}
		1803
		1804	void
		1805	aio_mkdir (SV8 pathname, int mode, SV callback = &PL_sv_undef)
		1806	PPCODE:
		1807	{
		1808	dREQ;
		1809
		1810	req->type = EIO_MKDIR;
		1811	req->int2 = mode;
		1812	req_set_path1 (req, pathname);
		1813
		1814	REQ_SEND;
		1815	}
		1816
		1817	void
		1818	aio_unlink (SV8 pathname, SV callback = &PL_sv_undef)
		1819	ALIAS:
		1820	aio_unlink = EIO_UNLINK
		1821	aio_rmdir = EIO_RMDIR
		1822	aio_readdir = EIO_READDIR
		1823	PPCODE:
		1824	{
		1825	dREQ;
		1826
		1827	req->type = ix;
		1828	req_set_path1 (req, pathname);
		1829
		1830	REQ_SEND;
		1831	}
		1832
		1833	void
		1834	aio_link (SV8 oldpath, SV8 newpath, SV *callback = &PL_sv_undef)
		1835	ALIAS:
		1836	aio_link = EIO_LINK
		1837	aio_symlink = EIO_SYMLINK
		1838	aio_rename = EIO_RENAME
		1839	PPCODE:
		1840	{
		1841	eio_wd wd2 = 0;
		1842	dREQ;
		1843
		1844	req->type = ix;
		1845	req_set_path1 (req, oldpath);
		1846	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1847	req->int3 = (long)wd2;
		1848
		1849	REQ_SEND;
		1850	}
		1851
		1852	void
		1853	aio_rename2 (SV8 oldpath, SV8 newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1854	PPCODE:
		1855	{
		1856	eio_wd wd2 = 0;
		1857	dREQ;
		1858
		1859	req->type = EIO_RENAME;
		1860	req_set_path1 (req, oldpath);
		1861	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1862	req->int2 = flags;
		1863	req->int3 = (long)wd2;
		1864
		1865	REQ_SEND;
		1866	}
		1867
		1868	void
		1869	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
		1870	PPCODE:
		1871	{
		1872	dREQ;
		1873
		1874	req->type = EIO_MKNOD;
		1875	req->int2 = (mode_t)mode;
		1876	req->offs = dev;
		1877	req_set_path1 (req, pathname);
		1878
		1879	REQ_SEND;
		1880	}
		1881
		1882	void
		1883	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1884	ALIAS:
		1885	aio_mtouch = EIO_MTOUCH
		1886	aio_msync = EIO_MSYNC
		1887	PPCODE:
		1888	{
		1889	STRLEN svlen;
		1890	char *svptr = SvPVbyte (data, svlen);
		1891	UV len = SvUV (length);
		1892
		1893	if (flags < 0)
		1894	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1895
		1896	if (offset < 0)
		1897	offset += svlen;
		1898
		1899	if (offset < 0 \|\| offset > svlen)
		1900	croak ("offset outside of scalar");
		1901
		1902	if (!SvOK (length) \|\| len + offset > svlen)
		1903	len = svlen - offset;
		1904
		1905	{
		1906	dREQ;
		1907
		1908	req->type = ix;
		1909	req->sv2 = SvREFCNT_inc (data);
		1910	req->ptr2 = (char *)svptr + offset;
		1911	req->size = len;
		1912	req->int1 = flags;
		1913
		1914	REQ_SEND;
		1915	}
		1916	}
		1917
		1918	void
		1919	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1920	PPCODE:
		1921	{
		1922	STRLEN svlen;
		1923	char *svptr = SvPVbyte (data, svlen);
		1924	UV len = SvUV (length);
		1925
		1926	if (offset < 0)
		1927	offset += svlen;
		1928
		1929	if (offset < 0 \|\| offset > svlen)
		1930	croak ("offset outside of scalar");
		1931
		1932	if (!SvOK (length) \|\| len + offset > svlen)
		1933	len = svlen - offset;
		1934
		1935	{
		1936	dREQ;
		1937
		1938	req->type = EIO_MLOCK;
		1939	req->sv2 = SvREFCNT_inc (data);
		1940	req->ptr2 = (char *)svptr + offset;
		1941	req->size = len;
		1942
		1943	REQ_SEND;
		1944	}
		1945	}
		1946
		1947	void
		1948	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1949	PPCODE:
		1950	{
		1951	dREQ;
		1952
		1953	req->type = EIO_MLOCKALL;
		1954	req->int1 = flags;
		1955
		1956	REQ_SEND;
		1957	}
		1958
		1959	void
		1960	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback = &PL_sv_undef)
		1961	PPCODE:
		1962	{
		1963	int fd = s_fileno_croak (fh, 0);
		1964	dREQ;
		1965
		1966	req->type = EIO_CUSTOM;
		1967	req->sv1 = newSVsv (fh);
		1968	req->int1 = fd;
		1969
		1970	req->feed = fiemap;
		1971	#if HAVE_FIEMAP
		1972	/* keep our fingers crossed that the next two types are 64 bit */
		1973	req->offs = start;
		1974	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1975	req->int2 = flags;
		1976	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1977	#endif
		1978
		1979	REQ_SEND;
		1980	}
		1981
		1982	void
		1983	aio_slurp (SV pathname, off_t offset, UV length, SV8 data, SV *callback = &PL_sv_undef)
		1984	PPCODE:
		1985	{
		1986	char *svptr = 0;
		1987
		1988	sv_clear_foreign (data);
		1989
		1990	if (length) /* known length, directly read into scalar */
		1991	{
		1992	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
		1993	svptr = sv_grow (data, length + 1);
		1994	else if (SvCUR (data) < length)
		1995	croak ("length outside of scalar, and cannot grow");
		1996	else
		1997	svptr = SvPVbyte_nolen (data);
		1998	}
		1999
		2000	{
		2001	dREQ;
		2002
		2003	req->type = EIO_SLURP;
		2004	req_set_path1 (req, pathname);
		2005	req->offs = offset;
		2006	req->size = length;
		2007	req->sv2 = SvREFCNT_inc (data);
		2008	req->ptr2 = svptr;
		2009
		2010	if (!SvREADONLY (data))
		2011	{
		2012	SvREADONLY_on (data);
		2013	req->flags \|= FLAG_SV2_RO_OFF;
		2014	}
		2015
		2016	REQ_SEND;
		2017	}
		2018	}
		2019
		2020	void
		2021	aio_busy (double delay, SV *callback = &PL_sv_undef)
		2022	PPCODE:
		2023	{
		2024	dREQ;
		2025
		2026	req->type = EIO_BUSY;
		2027	req->nv1 = delay < 0. ? 0. : delay;
		2028
		2029	REQ_SEND;
		2030	}
		2031
		2032	void
		2033	aio_group (SV *callback = &PL_sv_undef)
		2034	PPCODE:
		2035	{
		2036	dREQ;
		2037
		2038	req->type = EIO_GROUP;
		2039
		2040	PUTBACK;
		2041	req_submit (req);
		2042	SPAGAIN;
		2043
		2044	XPUSHs (req_sv (req, aio_grp_stash));
		2045	}
		2046
		2047	void
		2048	aio_nop (SV *callback = &PL_sv_undef)
		2049	ALIAS:
		2050	aio_nop = EIO_NOP
		2051	aio_sync = EIO_SYNC
		2052	PPCODE:
		2053	{
		2054	dREQ;
		2055
		2056	req->type = ix;
		2057
		2058	REQ_SEND;
		2059	}
		2060
		2061	int
		2062	aioreq_pri (int pri = NO_INIT)
		2063	CODE:
		2064	RETVAL = next_pri;
		2065	if (items > 0)
		2066	{
		2067	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		2068	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		2069	next_pri = pri;
		2070	}
		2071	OUTPUT:
		2072	RETVAL
		2073
		2074	void
		2075	aioreq_nice (int nice = 0)
		2076	CODE:
		2077	nice = next_pri - nice;
		2078	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		2079	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		2080	next_pri = nice;
		2081
		2082	void
		2083	flush ()
		2084	CODE:
		2085	while (eio_nreqs ())
404	{	2086	{
405	poll_wait ();	2087	poll_wait ();
406	poll_cb ();	2088	poll_cb ();
407	}	2089	}
408	}
409		2090
410	int	2091	int
411	max_outstanding(nreqs)	2092	poll ()
412	int nreqs
413	PROTOTYPE: $
414	CODE:
415	RETVAL = max_outstanding;
416	max_outstanding = nreqs;
417
418	void
419	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
420	SV * pathname
421	int flags
422	int mode
423	SV * callback
424	PROTOTYPE: $$$;$
425	CODE:	2093	CODE:
426	{
427	aio_req req;
428
429	Newz (0, req, 1, aio_cb);
430
431	if (!req)
432	croak ("out of memory during aio_req allocation");
433
434	req->type = REQ_OPEN;
435	req->data = newSVsv (pathname);
436	req->dataptr = SvPV_nolen (req->data);
437	req->fd = flags;
438	req->mode = mode;
439	req->callback = SvREFCNT_inc (callback);
440
441	send_req (req);
442	}
443
444	void
445	aio_close(fh,callback=&PL_sv_undef)
446	InputStream fh
447	SV * callback
448	PROTOTYPE: $;$
449	ALIAS:
450	aio_close = REQ_CLOSE
451	aio_fsync = REQ_FSYNC
452	aio_fdatasync = REQ_FDATASYNC
453	CODE:
454	{
455	aio_req req;
456
457	Newz (0, req, 1, aio_cb);
458
459	if (!req)
460	croak ("out of memory during aio_req allocation");
461
462	req->type = ix;
463	req->fd = PerlIO_fileno (fh);
464	req->callback = SvREFCNT_inc (callback);
465
466	send_req (req);
467	}
468
469	void
470	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471	InputStream fh
472	UV offset
473	IV length
474	SV * data
475	IV dataoffset
476	SV * callback
477	PROTOTYPE: $$$$$;$
478	CODE:
479	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
480
481	void
482	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
483	OutputStream fh
484	UV offset
485	IV length
486	SV * data
487	IV dataoffset
488	SV * callback
489	PROTOTYPE: $$$$$;$
490	CODE:
491	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
492
493	void
494	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495	InputStream fh
496	UV offset
497	IV length
498	SV * callback
499	PROTOTYPE: $$$;$
500	CODE:
501	{
502	aio_req req;
503
504	if (length < 0)
505	croak ("length must not be negative");
506
507	Newz (0, req, 1, aio_cb);
508
509	if (!req)
510	croak ("out of memory during aio_req allocation");
511
512	req->type = REQ_READAHEAD;
513	req->fd = PerlIO_fileno (fh);
514	req->offset = offset;
515	req->length = length;
516	req->callback = SvREFCNT_inc (callback);
517
518	send_req (req);
519	}
520
521	void
522	aio_stat(fh_or_path,callback=&PL_sv_undef)
523	SV * fh_or_path
524	SV * callback
525	ALIAS:
526	aio_stat = REQ_STAT
527	aio_lstat = REQ_LSTAT
528	CODE:
529	{
530	aio_req req;
531
532	Newz (0, req, 1, aio_cb);
533
534	if (!req)
535	croak ("out of memory during aio_req allocation");
536
537	New (0, req->statdata, 1, Stat_t);
538
539	if (!req->statdata)
540	croak ("out of memory during aio_req->statdata allocation");
541
542	if (SvPOK (fh_or_path))
543	{
544	req->type = ix;
545	req->data = newSVsv (fh_or_path);
546	req->dataptr = SvPV_nolen (req->data);
547	}
548	else
549	{
550	req->type = REQ_FSTAT;
551	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552	}
553
554	req->callback = SvREFCNT_inc (callback);
555
556	send_req (req);
557	}
558
559	void
560	aio_unlink(pathname,callback=&PL_sv_undef)
561	SV * pathname
562	SV * callback
563	CODE:
564	{
565	aio_req req;
566
567	Newz (0, req, 1, aio_cb);
568
569	if (!req)
570	croak ("out of memory during aio_req allocation");
571
572	req->type = REQ_UNLINK;
573	req->data = newSVsv (pathname);
574	req->dataptr = SvPV_nolen (req->data);
575	req->callback = SvREFCNT_inc (callback);
576
577	send_req (req);
578	}
579
580	void
581	flush()
582	PROTOTYPE:
583	CODE:
584	while (nreqs)
585	{
586	poll_wait ();	2094	poll_wait ();
587	poll_cb ();	2095	RETVAL = poll_cb ();
588	}
589
590	void
591	poll()
592	PROTOTYPE:
593	CODE:
594	if (nreqs)
595	{
596	poll_wait ();
597	poll_cb ();
598	}
599
600	int
601	poll_fileno()
602	PROTOTYPE:
603	CODE:
604	RETVAL = respipe [0];
605	OUTPUT:	2096	OUTPUT:
606	RETVAL	2097	RETVAL
607		2098
608	int	2099	int
		2100	poll_fileno ()
		2101	CODE:
		2102	RETVAL = s_epipe_fd (&respipe);
		2103	OUTPUT:
		2104	RETVAL
		2105
		2106	int
609	poll_cb(...)	2107	poll_cb (...)
610	PROTOTYPE:	2108	PROTOTYPE:
611	CODE:	2109	CODE:
612	RETVAL = poll_cb ();	2110	RETVAL = poll_cb ();
613	OUTPUT:	2111	OUTPUT:
614	RETVAL	2112	RETVAL
615		2113
616	void	2114	void
617	poll_wait()	2115	poll_wait ()
618	PROTOTYPE:
619	CODE:	2116	CODE:
620	if (nreqs)
621	poll_wait ();	2117	poll_wait ();
622		2118
623	int	2119	int
624	nreqs()	2120	nreqs ()
625	PROTOTYPE:
626	CODE:	2121	CODE:
627	RETVAL = nreqs;	2122	RETVAL = eio_nreqs ();
628	OUTPUT:	2123	OUTPUT:
629	RETVAL	2124	RETVAL
630		2125
		2126	int
		2127	nready ()
		2128	CODE:
		2129	RETVAL = eio_nready ();
		2130	OUTPUT:
		2131	RETVAL
		2132
		2133	int
		2134	npending ()
		2135	CODE:
		2136	RETVAL = eio_npending ();
		2137	OUTPUT:
		2138	RETVAL
		2139
		2140	int
		2141	nthreads ()
		2142	CODE:
		2143	RETVAL = eio_nthreads ();
		2144	OUTPUT:
		2145	RETVAL
		2146
		2147	int
		2148	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2149	CODE:
		2150	RETVAL = posix_fadvise (fh, offset, length, advice);
		2151	OUTPUT:
		2152	RETVAL
		2153
		2154	IV
		2155	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2156	CODE:
		2157	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2158	OUTPUT:
		2159	RETVAL
		2160
		2161	void
		2162	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		2163	PPCODE:
		2164	sv_clear_foreign (scalar);
		2165	{
		2166	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2167	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		2168	if (addr == (void *)-1)
		2169	XSRETURN_NO;
		2170
		2171	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2172
		2173	if (!(prot & PROT_WRITE))
		2174	SvREADONLY_on (scalar);
		2175
		2176	XSRETURN_YES;
		2177	}
		2178
		2179	void
		2180	munmap (SV *scalar)
		2181	CODE:
		2182	sv_clear_foreign (scalar);
		2183
		2184	SV *
		2185	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2186	CODE:
		2187	{
		2188	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2189	void *new;
		2190
		2191	if (!mg \|\| SvPVX (scalar) != mg->mg_ptr)
		2192	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2193
		2194	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2195
		2196	RETVAL = &PL_sv_no;
		2197
		2198	if (new != (void *)-1)
		2199	{
		2200	RETVAL = new == (void *)mg->mg_ptr
		2201	? newSVpvn ("0 but true", 10)
		2202	: &PL_sv_yes;
		2203
		2204	mg->mg_ptr = (char *)new;
		2205	mg->mg_obj = (SV *)new_length;
		2206
		2207	SvPVX (scalar) = mg->mg_ptr;
		2208	SvCUR_set (scalar, new_length);
		2209	}
		2210	}
		2211	OUTPUT:
		2212	RETVAL
		2213
		2214	int
		2215	madvise (SV scalar, IV offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		2216	ALIAS:
		2217	mprotect = 1
		2218	CODE:
		2219	{
		2220	STRLEN svlen;
		2221	void *addr = SvPVbyte (scalar, svlen);
		2222	STRLEN len = SvUV (length);
		2223
		2224	if (offset < 0)
		2225	offset += svlen;
		2226
		2227	if (offset < 0 \|\| offset > svlen)
		2228	croak ("offset outside of scalar");
		2229
		2230	if (!SvOK (length) \|\| len + offset > svlen)
		2231	len = svlen - offset;
		2232
		2233	addr = (void *)(((intptr_t)addr) + offset);
		2234	eio_page_align (&addr, &len);
		2235
		2236	switch (ix)
		2237	{
		2238	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2239	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2240	}
		2241	}
		2242	OUTPUT:
		2243	RETVAL
		2244
		2245	int
		2246	munlock (SV scalar, IV offset = 0, SV length = &PL_sv_undef)
		2247	CODE:
		2248	{
		2249	STRLEN svlen;
		2250	void *addr = SvPVbyte (scalar, svlen);
		2251	size_t len = SvUV (length);
		2252
		2253	if (offset < 0)
		2254	offset += svlen;
		2255
		2256	if (offset < 0 \|\| offset > svlen)
		2257	croak ("offset outside of scalar");
		2258
		2259	if (!SvOK (length) \|\| len + offset > svlen)
		2260	len = svlen - offset;
		2261
		2262	addr = (void *)(((intptr_t)addr) + offset);
		2263	eio_page_align (&addr, &len);
		2264	#if _POSIX_MEMLOCK_RANGE
		2265	RETVAL = munlock (addr, len);
		2266	#else
		2267	RETVAL = EIO_ENOSYS ();
		2268	#endif
		2269	}
		2270	OUTPUT:
		2271	RETVAL
		2272
		2273	int
		2274	mlockall (int flags)
		2275	PROTOTYPE: $;
		2276	CODE:
		2277	RETVAL = eio_mlockall_sync (flags);
		2278	OUTPUT:
		2279	RETVAL
		2280
		2281	int
		2282	munlockall ()
		2283	CODE:
		2284	#if _POSIX_MEMLOCK
		2285	munlockall ();
		2286	#else
		2287	RETVAL = EIO_ENOSYS ();
		2288	#endif
		2289	OUTPUT:
		2290	RETVAL
		2291
		2292	int
		2293	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		2294	CODE:
		2295	{
		2296	#if HAVE_LINUX_SPLICE
		2297	loff_t off_in_, off_out_;
		2298	RETVAL = splice (
		2299	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2300	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2301	length, flags
		2302	);
		2303	#else
		2304	RETVAL = EIO_ENOSYS ();
		2305	#endif
		2306	}
		2307	OUTPUT:
		2308	RETVAL
		2309
		2310	int
		2311	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2312	CODE:
		2313	#if HAVE_LINUX_SPLICE
		2314	RETVAL = tee (rfh, wfh, length, flags);
		2315	#else
		2316	RETVAL = EIO_ENOSYS ();
		2317	#endif
		2318	OUTPUT:
		2319	RETVAL
		2320
		2321	int
		2322	pipesize (aio_rfd rfh, int new_size = -1)
		2323	PROTOTYPE: $;$
		2324	CODE:
		2325	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2326	if (new_size >= 0)
		2327	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2328	else
		2329	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2330	#else
		2331	errno = ENOSYS;
		2332	RETVAL = -1;
		2333	#endif
		2334	OUTPUT:
		2335	RETVAL
		2336
		2337	void
		2338	pipe2 (int flags = 0)
		2339	PROTOTYPE: ;$
		2340	PPCODE:
		2341	{
		2342	int fd[2];
		2343	int res;
		2344
		2345	if (flags)
		2346	#if HAVE_PIPE2
		2347	res = pipe2 (fd, flags);
		2348	#else
		2349	res = (errno = ENOSYS, -1);
		2350	#endif
		2351	else
		2352	res = pipe (fd);
		2353
		2354	if (!res)
		2355	{
		2356	EXTEND (SP, 2);
		2357	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2358	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2359	}
		2360	}
		2361
		2362	void
		2363	eventfd (unsigned int initval = 0, int flags = 0)
		2364	PPCODE:
		2365	{
		2366	int fd;
		2367	#if HAVE_EVENTFD
		2368	fd = eventfd (initval, flags);
		2369	#else
		2370	fd = (errno = ENOSYS, -1);
		2371	#endif
		2372
		2373	XPUSHs (newmortalFH (fd, O_RDWR));
		2374	}
		2375
		2376	void
		2377	timerfd_create (int clockid, int flags = 0)
		2378	PPCODE:
		2379	{
		2380	int fd;
		2381	#if HAVE_TIMERFD
		2382	fd = timerfd_create (clockid, flags);
		2383	#else
		2384	fd = (errno = ENOSYS, -1);
		2385	#endif
		2386
		2387	XPUSHs (newmortalFH (fd, O_RDWR));
		2388	}
		2389
		2390	void
		2391	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2392	PPCODE:
		2393	{
		2394	int fd = s_fileno_croak (fh, 0);
		2395	#if HAVE_TIMERFD
		2396	int res;
		2397	struct itimerspec its, ots;
		2398
		2399	ts_set (&its.it_interval, interval);
		2400	ts_set (&its.it_value , value);
		2401	res = timerfd_settime (fd, flags, &its, &ots);
		2402
		2403	if (!res)
		2404	{
		2405	EXTEND (SP, 2);
		2406	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2407	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2408	}
		2409	#else
		2410	errno = ENOSYS;
		2411	#endif
		2412	}
		2413
		2414	void
		2415	timerfd_gettime (SV *fh)
		2416	PPCODE:
		2417	{
		2418	int fd = s_fileno_croak (fh, 0);
		2419	#if HAVE_TIMERFD
		2420	int res;
		2421	struct itimerspec ots;
		2422	res = timerfd_gettime (fd, &ots);
		2423
		2424	if (!res)
		2425	{
		2426	EXTEND (SP, 2);
		2427	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2428	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2429	}
		2430	#else
		2431	errno = ENOSYS;
		2432	#endif
		2433	}
		2434
		2435	UV
		2436	get_fdlimit ()
		2437	CODE:
		2438	#if HAVE_RLIMITS
		2439	struct rlimit rl;
		2440	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2441	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2442	#endif
		2443	XSRETURN_UNDEF;
		2444	OUTPUT:
		2445	RETVAL
		2446
		2447	void
		2448	min_fdlimit (UV limit = 0x7fffffffU)
		2449	CODE:
		2450	{
		2451	#if HAVE_RLIMITS
		2452	struct rlimit rl;
		2453	rlim_t orig_rlim_max;
		2454	UV bit;
		2455
		2456	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2457	goto fail;
		2458
		2459	if (rl.rlim_cur == RLIM_INFINITY)
		2460	XSRETURN_YES;
		2461
		2462	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2463
		2464	if (rl.rlim_cur < limit)
		2465	{
		2466	rl.rlim_cur = limit;
		2467
		2468	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2469	rl.rlim_max = rl.rlim_cur;
		2470	}
		2471
		2472	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2473	XSRETURN_YES;
		2474
		2475	if (errno == EPERM)
		2476	{
		2477	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2478	/* our limit overflows a system-wide limit */
		2479	/* try an adaptive algorithm, but do not lower the hardlimit */
		2480	rl.rlim_max = 0;
		2481	for (bit = 0x40000000U; bit; bit >>= 1)
		2482	{
		2483	rl.rlim_max \|= bit;
		2484	rl.rlim_cur = rl.rlim_max;
		2485
		2486	/* nevr decrease the hard limit */
		2487	if (rl.rlim_max < orig_rlim_max)
		2488	break;
		2489
		2490	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2491	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2492	}
		2493
		2494	/* now, raise the soft limit to the max permitted */
		2495	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2496	{
		2497	rl.rlim_cur = rl.rlim_max;
		2498	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2499	errno = EPERM;
		2500	}
		2501	}
		2502	#endif
		2503	fail:
		2504	XSRETURN_UNDEF;
		2505	}
		2506
		2507	void _on_next_submit (SV *cb)
		2508	CODE:
		2509	SvREFCNT_dec (on_next_submit);
		2510	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2511
		2512	PROTOTYPES: DISABLE
		2513
		2514	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2515
		2516	BOOT:
		2517	{
		2518	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2519	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2520	}
		2521
		2522	void
		2523	DESTROY (SV *self)
		2524	CODE:
		2525	{
		2526	aio_wd wd = SvAIO_WD (self);
		2527	#if HAVE_AT
		2528	{
		2529	SV *callback = &PL_sv_undef;
		2530	dREQ; /* clobbers next_pri :/ */
		2531	next_pri = req->pri; /* restore next_pri */
		2532	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2533	req->type = EIO_WD_CLOSE;
		2534	req->wd = wd;
		2535	REQ_SEND;
		2536	}
		2537	#else
		2538	eio_wd_close_sync (wd);
		2539	#endif
		2540	}
		2541
		2542	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2543
		2544	void
		2545	cancel (aio_req_ornot req)
		2546	CODE:
		2547	eio_cancel (req);
		2548
		2549	void
		2550	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2551	PPCODE:
		2552	{
		2553	if (GIMME_V != G_VOID)
		2554	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2555
		2556	if (items > 1)
		2557	{
		2558	SV *cb_cv = get_cb (callback);
		2559
		2560	SvREFCNT_dec (req->callback);
		2561	req->callback = SvREFCNT_inc (cb_cv);
		2562	}
		2563	}
		2564
		2565	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2566
		2567	void
		2568	add (aio_req grp, ...)
		2569	PPCODE:
		2570	{
		2571	int i;
		2572
		2573	if (grp->int1 == 2)
		2574	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2575
		2576	for (i = 1; i < items; ++i )
		2577	{
		2578	aio_req req;
		2579
		2580	if (GIMME_V != G_VOID)
		2581	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2582
		2583	req = SvAIO_REQ (ST (i));
		2584
		2585	if (req)
		2586	eio_grp_add (grp, req);
		2587	}
		2588	}
		2589
		2590	void
		2591	cancel_subs (aio_req_ornot req)
		2592	CODE:
		2593	req_cancel_subs (req);
		2594
		2595	void
		2596	result (aio_req grp, ...)
		2597	CODE:
		2598	{
		2599	int i;
		2600	AV *av;
		2601
		2602	grp->errorno = errno;
		2603
		2604	av = newAV ();
		2605	av_extend (av, items - 1);
		2606
		2607	for (i = 1; i < items; ++i )
		2608	av_push (av, newSVsv (ST (i)));
		2609
		2610	SvREFCNT_dec (grp->sv1);
		2611	grp->sv1 = (SV *)av;
		2612	}
		2613
		2614	void
		2615	errno (aio_req grp, int errorno = errno)
		2616	CODE:
		2617	grp->errorno = errorno;
		2618
		2619	void
		2620	limit (aio_req grp, int limit)
		2621	CODE:
		2622	eio_grp_limit (grp, limit);
		2623
		2624	void
		2625	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2626	CODE:
		2627	{
		2628	SvREFCNT_dec (grp->sv2);
		2629	grp->sv2 = newSVsv (callback);
		2630	grp->feed = aio_grp_feed;
		2631
		2632	if (grp->int2 <= 0)
		2633	grp->int2 = 2;
		2634
		2635	eio_grp_limit (grp, grp->int2);
		2636	}
		2637

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs. Revision 1.272 by root, Wed Jan 2 16:32:57 2019 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.272 by root, Wed Jan 2 16:32:57 2019 UTC