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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.129 by root, Tue Sep 30 17:03:53 2008 UTC vs.
Revision 1.266 by root, Tue Aug 14 14:03:14 2018 UTC

…		…
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
8		12
9	#include <stddef.h>	13	#include <stddef.h>
10	#include <stdlib.h>	14	#include <stdlib.h>
11	#include <errno.h>	15	#include <errno.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
13	#include <sys/stat.h>	18	#include <sys/stat.h>
14	#include <limits.h>	19	#include <limits.h>
15	#include <fcntl.h>	20	#include <fcntl.h>
16	#include <sched.h>	21	#include <sched.h>
17		22
		23	#if HAVE_SYS_MKDEV_H
		24	# include <sys/mkdev.h>
		25	#elif HAVE_SYS_SYSMACROS_H
		26	# include <sys/sysmacros.h>
		27	#endif
		28
		29	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		30	# include <sys/mman.h>
		31	#endif
		32
		33	/* the incompetent fool that created musl keeps __linux__, refuses
		34	* to implement any linux standard apis, and also has no way to test
		35	* for his broken iplementation. don't complain to me if this fails
		36	* for you.
		37	*/
		38	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		39	# include <linux/fs.h>
		40	# ifdef FS_IOC_FIEMAP
		41	# include <linux/types.h>
		42	# include <linux/fiemap.h>
		43	# define HAVE_FIEMAP 1
		44	# endif
		45	#endif
		46
18	/* perl namespace pollution */	47	/* perl namespace pollution */
19	#undef VERSION	48	#undef VERSION
20
21	#ifdef _WIN32
22
23	# define EIO_STRUCT_DIRENT Direntry_t
24	# undef malloc
25	# undef free
26
27	// perl overrides all those nice win32 functions
28	# undef open
29	# undef read
30	# undef write
31	# undef send
32	# undef recv
33	# undef stat
34	# undef fstat
35	# define lstat stat
36	# undef truncate
37	# undef ftruncate
38	# undef open
39	# undef close
40	# undef unlink
41	# undef rmdir
42	# undef rename
43	# undef lseek
44
45	# define chown(a,b,c) (errno = ENOSYS, -1)
46	# define fchown(a,b,c) (errno = ENOSYS, -1)
47	# define fchmod(a,b) (errno = ENOSYS, -1)
48	# define symlink(a,b) (errno = ENOSYS, -1)
49	# define readlink(a,b,c) (errno = ENOSYS, -1)
50	# define mknod(a,b,c) (errno = ENOSYS, -1)
51	# define truncate(a,b) (errno = ENOSYS, -1)
52	# define ftruncate(fd,o) chsize ((fd), (o))
53	# define fsync(fd) _commit (fd)
54	# define opendir(fd) (errno = ENOSYS, 0)
55	# define readdir(fd) (errno = ENOSYS, -1)
56	# define closedir(fd) (errno = ENOSYS, -1)
57	# define mkdir(a,b) mkdir (a)
58
59	#else
60
61	# include <sys/time.h>
62	# include <sys/select.h>
63	# include <unistd.h>
64	# include <utime.h>
65	# include <signal.h>
66	# define EIO_STRUCT_DIRENT struct dirent
67
68	#endif
69		49
70	/* perl stupidly overrides readdir and maybe others */	50	/* perl stupidly overrides readdir and maybe others */
71	/* with thread-unsafe versions, imagine that :( */	51	/* with thread-unsafe versions, imagine that :( */
72	#undef readdir	52	#undef readdir
73	#undef opendir	53	#undef opendir
74	#undef closedir	54	#undef closedir
75		55
		56	#ifdef _WIN32
		57
		58	// perl overrides all those nice libc functions
		59
		60	#undef malloc
		61	#undef free
		62	#undef open
		63	#undef read
		64	#undef write
		65	#undef send
		66	#undef recv
		67	#undef stat
		68	#undef lstat
		69	#undef fstat
		70	#undef truncate
		71	#undef ftruncate
		72	#undef open
		73	#undef link
		74	#undef close
		75	#undef unlink
		76	#undef mkdir
		77	#undef rmdir
		78	#undef rename
		79	#undef lseek
		80	#undef opendir
		81	#undef readdir
		82	#undef closedir
		83	#undef chmod
		84	#undef fchmod
		85	#undef dup
		86	#undef dup2
		87	#undef abort
		88	#undef pipe
		89
		90	#define EIO_STRUCT_STAT struct _stati64
76	#define EIO_STRUCT_STAT Stat_t	91	#define EIO_STRUCT_STATI64
77		92
78	/* use NV for 32 bit perls as it allows larger offsets */
79	#if IVSIZE >= 8
80	# define SvVAL64 SvIV
81	#else	93	#else
82	# define SvVAL64 SvNV	94
		95	#include <sys/time.h>
		96	#include <sys/select.h>
		97	#include <unistd.h>
		98	#include <utime.h>
		99	#include <signal.h>
		100
		101	#define EIO_STRUCT_STAT Stat_t
		102
83	#endif	103	#endif
84		104
85	/*****************************************************************************/	105	/*****************************************************************************/
86		106
87	#if __GNUC__ >= 3	107	#if __GNUC__ >= 3
…		…
93	#define expect_false(expr) expect ((expr) != 0, 0)	113	#define expect_false(expr) expect ((expr) != 0, 0)
94	#define expect_true(expr) expect ((expr) != 0, 1)	114	#define expect_true(expr) expect ((expr) != 0, 1)
95		115
96	/*****************************************************************************/	116	/*****************************************************************************/
97		117
98	static HV *stash;	118	#include "config.h"
		119
		120	#if HAVE_ST_XTIMENSEC
		121	# define ATIMENSEC PL_statcache.st_atimensec
		122	# define MTIMENSEC PL_statcache.st_mtimensec
		123	# define CTIMENSEC PL_statcache.st_ctimensec
		124	#elif HAVE_ST_XTIMESPEC
		125	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		126	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		127	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		128	#else
		129	# define ATIMENSEC 0
		130	# define MTIMENSEC 0
		131	# define CTIMENSEC 0
		132	#endif
		133
		134	#include "schmorp.h"
		135
		136	#if HAVE_EVENTFD
		137	# include <sys/eventfd.h>
		138	#endif
		139
		140	#if HAVE_TIMERFD
		141	# include <sys/timerfd.h>
		142	#endif
		143
		144	#if HAVE_RLIMITS
		145	#include <sys/time.h>
		146	#include <sys/resource.h>
		147	#endif
		148
99	typedef SV SV8; /* byte-sv, used for argument-checking */	149	typedef SV SV8; /* byte-sv, used for argument-checking */
		150	typedef int aio_rfd; /* read file desriptor */
		151	typedef int aio_wfd; /* write file descriptor */
100		152
101	#define AIO_REQ_KLASS "IO::AIO::REQ"	153	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
102	#define AIO_GRP_KLASS "IO::AIO::GRP"
103		154
104	#define EIO_REQ_MEMBERS \	155	#define EIO_REQ_MEMBERS \
105	SV *callback; \	156	SV *callback; \
106	SV *sv1, *sv2; \	157	SV *sv1, *sv2; \
		158	SV *sv3, *sv4; \
107	STRLEN stroffset; \	159	STRLEN stroffset; \
108	SV *self;	160	SV *self;
109		161
110	#define EIO_NO_WRAPPERS 1	162	#define EIO_NO_WRAPPERS 1
111		163
112	#include "libeio/eio.h"	164	#include "libeio/eio.h"
113		165
114	static int req_invoke (eio_req *req);	166	static int req_invoke (eio_req *req);
115	#define EIO_FINISH(req) req_invoke (req)	167	#define EIO_FINISH(req) req_invoke (req)
116	static void aio_grp_feed (eio_req *grp);
117	#define EIO_FEED(req) aio_grp_feed (req)
118	static void req_destroy (eio_req *grp);	168	static void req_destroy (eio_req *grp);
119	#define EIO_DESTROY(req) req_destroy (req)	169	#define EIO_DESTROY(req) req_destroy (req)
		170
		171	#include "libeio/eio.c"
		172
		173	#if !HAVE_POSIX_FADVISE
		174	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		175	#endif
		176
		177	#if !HAVE_POSIX_MADVISE
		178	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		179	#endif
		180
		181	#ifndef MAP_ANONYMOUS
		182	# ifdef MAP_ANON
		183	# define MAP_ANONYMOUS MAP_ANON
		184	# else
		185	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		186	# endif
		187	#endif
		188
		189	#ifndef makedev
		190	# define makedev(maj,min) (((maj) << 8) | (min))
		191	#endif
		192	#ifndef major
		193	# define major(dev) ((dev) >> 8)
		194	#endif
		195	#ifndef minor
		196	# define minor(dev) ((dev) & 0xff)
		197	#endif
		198
		199	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
		200	#ifdef __sun
		201	# undef PAGESIZE
		202	#endif
		203
		204	#if PAGESIZE <= 0
		205	# define PAGESIZE sysconf (_SC_PAGESIZE)
		206	#endif
		207
		208	/*****************************************************************************/
		209
		210	#if !_POSIX_MAPPED_FILES
		211	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		212	# define munmap(addr,length) EIO_ENOSYS ()
		213	#endif
		214
		215	#if !_POSIX_MEMORY_PROTECTION
		216	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		217	#endif
		218
		219	#if !MREMAP_MAYMOVE
		220	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		221	#endif
		222
		223	#define FOREIGN_MAGIC PERL_MAGIC_ext
		224
		225	static int ecb_cold
		226	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		227	{
		228	int old_errno = errno;
		229	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		230	errno = old_errno;
		231
		232	mg->mg_obj = 0; /* just in case */
		233
		234	SvREADONLY_off (sv);
		235
		236	if (SvPVX (sv) != mg->mg_ptr)
		237	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		238
		239	SvCUR_set (sv, 0);
		240	SvPVX (sv) = 0;
		241	SvOK_off (sv);
		242
		243	return 0;
		244	}
		245
		246	static MGVTBL mmap_vtbl = {
		247	0, 0, 0, 0, mmap_free
		248	};
		249
		250	static int ecb_cold
		251	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		252	{
		253	free (mg->mg_ptr);
		254	mg->mg_obj = 0; /* just in case */
		255
		256	SvREADONLY_off (sv);
		257
		258	if (SvPVX (sv) != mg->mg_ptr)
		259	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		260
		261	SvCUR_set (sv, 0);
		262	SvPVX (sv) = 0;
		263	SvOK_off (sv);
		264
		265	return 0;
		266	}
		267
		268	static MGVTBL sysfree_vtbl = {
		269	0, 0, 0, 0, sysfree_free
		270	};
		271
		272	/*****************************************************************************/
		273
		274	/* helper: set scalar to foreign ptr with custom free */
		275	static void
		276	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		277	{
		278	sv_force_normal (sv);
		279
		280	/* we store the length in mg_obj, as namlen is I32 :/ */
		281	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		282	->mg_obj = (SV *)length;
		283
		284	SvUPGRADE (sv, SVt_PV); /* nop... */
		285
		286	if (SvLEN (sv))
		287	Safefree (SvPVX (sv));
		288
		289	SvPVX (sv) = (char *)addr;
		290	SvCUR_set (sv, length);
		291	SvLEN_set (sv, 0);
		292	SvPOK_only (sv);
		293	}
		294
		295	static void
		296	sv_clear_foreign (SV *sv)
		297	{
		298	/* todo: iterate over magic and only free ours, but of course */
		299	/* the perl5porters will call that (correct) behaviour buggy */
		300	sv_unmagic (sv, FOREIGN_MAGIC);
		301	}
		302
		303	/*****************************************************************************/
		304
		305	/* defines all sorts of constants to 0 unless they are already defined */
		306	/* also provides const_iv_ and const_niv_ macros for them */
		307	#include "def0.h"
		308
		309	/*****************************************************************************/
		310
		311	static void
		312	fiemap (eio_req *req)
		313	{
		314	req->result = -1;
		315
		316	#if HAVE_FIEMAP
		317	/* assume some c99 */
		318	struct fiemap *fiemap = 0;
		319	size_t end_offset;
		320	int count = req->int3;
		321
		322	req->flags |= EIO_FLAG_PTR1_FREE;
		323
		324	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		325	/* increase in 3.5kb steps */
		326	if (count < 0)
		327	count = 8;
		328
		329	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		330	errno = ENOMEM;
		331	if (!fiemap)
		332	return;
		333
		334	req->ptr1 = fiemap;
		335
		336	fiemap->fm_start = req->offs;
		337	fiemap->fm_length = req->size;
		338	fiemap->fm_flags = req->int2;
		339	fiemap->fm_extent_count = count;
		340
		341	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		342	return;
		343
		344	if (req->int3 >= 0 /* not autosizing */
		345	|| !fiemap->fm_mapped_extents /* no more extents */
		346	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		347	goto done;
		348
		349	/* else we have to loop -
		350	* it would be tempting (actually I tried that first) to just query the
		351	* number of extents needed, but linux often feels like not returning all
		352	* extents, without telling us it left any out. this complicates
		353	* this quite a bit.
		354	*/
		355
		356	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		357
		358	for (;;)
		359	{
		360	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		361	char scratch[3072];
		362	struct fiemap *incmap = (struct fiemap *)scratch;
		363
		364	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		365	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		366	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		367	incmap->fm_flags = fiemap->fm_flags;
		368	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		369
		370	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		371	return;
		372
		373	if (!incmap->fm_mapped_extents)
		374	goto done;
		375
		376	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		377	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		378	errno = ENOMEM;
		379	if (!fiemap)
		380	return;
		381
		382	req->ptr1 = fiemap;
		383
		384	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		385	{
		386	struct fiemap_extent *e = incmap->fm_extents + count;
		387
		388	if (e->fe_logical + e->fe_length >= end_offset)
		389	goto done;
		390
		391	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		392
		393	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		394	goto done;
		395
		396	}
		397	}
		398
		399	done:
		400	req->result = 0;
		401
		402	#else
		403	errno = ENOSYS;
		404	#endif
		405	}
		406
		407	/*****************************************************************************/
120		408
121	enum {	409	enum {
122	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	410	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
123	};	411	};
124		412
125	#include "libeio/eio.c"
126
127	typedef eio_req *aio_req;	413	typedef eio_req *aio_req;
128	typedef eio_req *aio_req_ornot;	414	typedef eio_req *aio_req_ornot;
		415	typedef eio_wd aio_wd;
129		416
130	static SV *on_next_submit;	417	static SV *on_next_submit;
131	static int next_pri = EIO_PRI_DEFAULT;	418	static int next_pri = EIO_PRI_DEFAULT;
132	static int max_outstanding;	419	static int max_outstanding;
133		420
134	static int respipe_osf [2], respipe [2] = { -1, -1 };	421	static s_epipe respipe;
135		422
136	static void req_destroy (aio_req req);	423	static void req_destroy (aio_req req);
137	static void req_cancel (aio_req req);	424	static void req_cancel (aio_req req);
138		425
139	static void want_poll (void)	426	static void
		427	want_poll (void)
140	{	428	{
141	/* write a dummy byte to the pipe so fh becomes ready */	429	/* write a dummy byte to the pipe so fh becomes ready */
142	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	430	s_epipe_signal (&respipe);
143	}	431	}
144		432
145	static void done_poll (void)	433	static void
		434	done_poll (void)
146	{	435	{
147	/* read any signals sent by the worker threads */	436	/* read any signals sent by the worker threads */
148	char buf [4];	437	s_epipe_drain (&respipe);
149	while (respipe_read (respipe [0], buf, 4) == 4)
150	;
151	}	438	}
152		439
153	/* must be called at most once */	440	/* must be called at most once */
154	static SV *req_sv (aio_req req, const char *klass)	441	static SV *
		442	req_sv (aio_req req, HV *stash)
155	{	443	{
156	if (!req->self)	444	if (!req->self)
157	{	445	{
158	req->self = (SV *)newHV ();	446	req->self = (SV *)newHV ();
159	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	447	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
160	}	448	}
161		449
162	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	450	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
163	}	451	}
164		452
165	static aio_req SvAIO_REQ (SV *sv)	453	static SV *
		454	newSVaio_wd (aio_wd wd)
		455	{
		456	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		457	}
		458
		459	static aio_req
		460	SvAIO_REQ (SV *sv)
166	{	461	{
167	MAGIC *mg;	462	MAGIC *mg;
168		463
169	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	464	if (!SvROK (sv)
		465	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		466	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		467	&& SvSTASH (SvRV (sv)) != aio_req_stash
		468	&& !sv_derived_from (sv, "IO::AIO::REQ")))
170	croak ("object of class " AIO_REQ_KLASS " expected");	469	croak ("object of class IO::AIO::REQ expected");
171		470
172	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	471	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
173		472
174	return mg ? (aio_req)mg->mg_ptr : 0;	473	return mg ? (aio_req)mg->mg_ptr : 0;
175	}	474	}
176		475
		476	static aio_wd
		477	SvAIO_WD (SV *sv)
		478	{
		479	if (!SvROK (sv)
		480	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		481	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		482	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		483
		484	return (aio_wd)(long)SvIVX (SvRV (sv));
		485	}
		486
		487	static SV *
		488	newmortalFH (int fd, int flags)
		489	{
		490	if (fd < 0)
		491	return &PL_sv_undef;
		492
		493	GV *gv = (GV *)sv_newmortal ();
		494	char sym[64];
		495	int symlen;
		496
		497	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		498	gv_init (gv, aio_stash, sym, symlen, 0);
		499
		500	symlen = snprintf (
		501	sym,
		502	sizeof (sym),
		503	"%s&=%d",
		504	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		505	fd
		506	);
		507
		508	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		509	? (SV *)gv : &PL_sv_undef;
		510	}
		511
		512	static void
177	static void aio_grp_feed (aio_req grp)	513	aio_grp_feed (aio_req grp)
178	{	514	{
179	if (grp->sv2 && SvOK (grp->sv2))	515	if (grp->sv2 && SvOK (grp->sv2))
180	{	516	{
181	dSP;	517	dSP;
182		518
183	ENTER;	519	ENTER;
184	SAVETMPS;	520	SAVETMPS;
185	PUSHMARK (SP);	521	PUSHMARK (SP);
186	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	522	XPUSHs (req_sv (grp, aio_grp_stash));
187	PUTBACK;	523	PUTBACK;
188	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	524	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
189	SPAGAIN;	525	SPAGAIN;
190	FREETMPS;	526	FREETMPS;
191	LEAVE;	527	LEAVE;
192	}	528	}
193	}	529	}
194		530
		531	static void
195	static void req_submit (eio_req *req)	532	req_submit (eio_req *req)
196	{	533	{
197	eio_submit (req);	534	eio_submit (req);
198		535
199	if (expect_false (on_next_submit))	536	if (expect_false (on_next_submit))
200	{	537	{
…		…
207	PUTBACK;	544	PUTBACK;
208	call_sv (cb, G_DISCARD | G_EVAL);	545	call_sv (cb, G_DISCARD | G_EVAL);
209	}	546	}
210	}	547	}
211		548
		549	static int
212	static int req_invoke (eio_req *req)	550	req_invoke (eio_req *req)
213	{	551	{
214	dSP;
215
216	if (req->flags & FLAG_SV2_RO_OFF)	552	if (req->flags & FLAG_SV2_RO_OFF)
217	SvREADONLY_off (req->sv2);	553	SvREADONLY_off (req->sv2);
218		554
219	if (!EIO_CANCELLED (req) && req->callback)	555	if (!EIO_CANCELLED (req) && req->callback)
220	{	556	{
		557	dSP;
		558	static SV *sv_result_cache; /* caches the result integer SV */
		559	SV *sv_result;
		560
221	ENTER;	561	ENTER;
222	SAVETMPS;	562	SAVETMPS;
223	PUSHMARK (SP);	563	PUSHMARK (SP);
224	EXTEND (SP, 1);	564	EXTEND (SP, 1);
225		565
		566	/* do not recreate the result IV from scratch each time */
		567	if (expect_true (sv_result_cache))
		568	{
		569	sv_result = sv_result_cache; sv_result_cache = 0;
		570	SvIV_set (sv_result, req->result);
		571	SvIOK_only (sv_result);
		572	}
		573	else
		574	{
		575	sv_result = newSViv (req->result);
		576	SvREADONLY_on (sv_result);
		577	}
		578
226	switch (req->type)	579	switch (req->type)
227	{	580	{
		581	case EIO_WD_OPEN:
		582	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		583	break;
		584
228	case EIO_READDIR:	585	case EIO_READDIR:
229	{	586	{
230	SV *rv = &PL_sv_undef;	587	SV *rv = &PL_sv_undef;
231		588
232	if (req->result >= 0)	589	if (req->result >= 0)
233	{	590	{
234	int i;	591	int i;
235	char *buf = req->ptr2;	592	char *names = (char *)req->ptr2;
		593	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
236	AV *av = newAV ();	594	AV *av = newAV ();
237		595
238	av_extend (av, req->result - 1);	596	av_extend (av, req->result - 1);
239		597
240	for (i = 0; i < req->result; ++i)	598	for (i = 0; i < req->result; ++i)
241	{	599	{
242	SV *sv = newSVpv (buf, 0);	600	if (req->int1 & EIO_READDIR_DENTS)
		601	{
		602	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
243		603
		604	if (req->int1 & EIO_READDIR_CUSTOM2)
		605	{
		606	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		607	AV *avent = newAV ();
		608
		609	av_extend (avent, 2);
		610
		611	if (!sv_type [ent->type])
		612	{
		613	sv_type [ent->type] = newSViv (ent->type);
		614	SvREADONLY_on (sv_type [ent->type]);
		615	}
		616
		617	av_store (avent, 0, namesv);
		618	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		619	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		620
		621	av_store (av, i, newRV_noinc ((SV *)avent));
		622	}
		623	else
244	av_store (av, i, sv);	624	av_store (av, i, namesv);
		625
		626	++ent;
		627	}
		628	else
		629	{
		630	SV *name = newSVpv (names, 0);
		631	av_store (av, i, name);
245	buf += SvCUR (sv) + 1;	632	names += SvCUR (name) + 1;
		633	}
246	}	634	}
247		635
248	rv = sv_2mortal (newRV_noinc ((SV *)av));	636	rv = sv_2mortal (newRV_noinc ((SV *)av));
249	}	637	}
250		638
251	PUSHs (rv);	639	PUSHs (rv);
		640
		641	if (req->int1 & EIO_READDIR_CUSTOM1)
		642	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
252	}	643	}
253	break;	644	break;
254		645
255	case EIO_OPEN:	646	case EIO_OPEN:
		647	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		648	break;
		649
		650	case EIO_STATVFS:
		651	case EIO_FSTATVFS:
256	{	652	{
257	/* convert fd to fh */
258	SV *fh = &PL_sv_undef;	653	SV *rv = &PL_sv_undef;
259		654
		655	#ifndef _WIN32
260	if (req->result >= 0)	656	if (req->result >= 0)
261	{	657	{
		658	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
262	GV *gv = (GV *)sv_newmortal ();	659	HV *hv = newHV ();
263	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	660	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
264	char sym [64];	661	* chooses to make it a struct.
265	int symlen;
266		662	*/
267	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	663	unsigned long fsid = 0;
268	gv_init (gv, stash, sym, symlen, 0);	664	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
269		665
270	symlen = snprintf (	666	rv = sv_2mortal (newRV_noinc ((SV *)hv));
271	sym,
272	sizeof (sym),
273	"%s&=%d",
274	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
275	req->result
276	);
277		667
278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	668	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
279	fh = (SV *)gv;	669	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		670	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		671	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		672	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		673	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		674	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		675	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		676	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		677	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		678	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
280	}	679	}
		680	#endif
281		681
282	PUSHs (fh);	682	PUSHs (rv);
283	}	683	}
		684
284	break;	685	break;
285		686
286	case EIO_GROUP:	687	case EIO_GROUP:
287	req->int1 = 2; /* mark group as finished */	688	req->int1 = 2; /* mark group as finished */
288		689
…		…
300	case EIO_NOP:	701	case EIO_NOP:
301	case EIO_BUSY:	702	case EIO_BUSY:
302	break;	703	break;
303		704
304	case EIO_READLINK:	705	case EIO_READLINK:
		706	case EIO_REALPATH:
305	if (req->result > 0)	707	if (req->result > 0)
306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	708	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
307	break;	709	break;
308		710
309	case EIO_STAT:	711	case EIO_STAT:
310	case EIO_LSTAT:	712	case EIO_LSTAT:
311	case EIO_FSTAT:	713	case EIO_FSTAT:
312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	714	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		715
313	PL_laststatval = req->result;	716	if (!(PL_laststatval = req->result))
		717	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	718	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
315	PUSHs (sv_2mortal (newSViv (req->result)));	719
		720	PUSHs (sv_result);
316	break;	721	break;
317		722
		723	case EIO_SEEK:
		724	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		725	break;
		726
318	case EIO_READ:	727	case EIO_READ:
		728	{
319	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	729	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
320	*SvEND (req->sv2) = 0;	730	*SvEND (req->sv2) = 0;
321	PUSHs (sv_2mortal (newSViv (req->result)));	731	SvPOK_only (req->sv2);
		732	SvSETMAGIC (req->sv2);
		733	PUSHs (sv_result);
		734	}
322	break;	735	break;
323		736
324	case EIO_DUP2:	737	case EIO_SLURP:
		738	{
		739	if (req->result >= 0)
		740	{
		741	/* if length was originally not known, we steal the malloc'ed memory */
		742	if (req->flags & EIO_FLAG_PTR2_FREE)
		743	{
		744	req->flags &= ~EIO_FLAG_PTR2_FREE;
		745	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		746	}
		747	else
		748	{
		749	SvCUR_set (req->sv2, req->result);
		750	*SvEND (req->sv2) = 0;
		751	SvPOK_only (req->sv2);
		752	}
		753
		754	SvSETMAGIC (req->sv2);
		755	}
		756
		757	PUSHs (sv_result);
		758	}
		759	break;
		760
		761	case EIO_CUSTOM:
		762	if (req->feed == fiemap)
		763	{
		764	#if HAVE_FIEMAP
		765	if (!req->result)
		766	{
		767	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		768
		769	if (fiemap->fm_extent_count)
		770	{
		771	AV *av = newAV ();
		772	int i;
		773
		774	while (fiemap->fm_mapped_extents)
		775	{
		776	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		777	AV *ext_av = newAV ();
		778
		779	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		780	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		781	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		782	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		783
		784	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		785	}
		786
		787	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		788	}
		789	else
		790	{
		791	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		792	PUSHs (sv_result);
		793	}
		794	}
		795	#endif
		796	}
		797	else
		798	PUSHs (sv_result);
		799	break;
		800
		801	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
325	if (req->result > 0)	802	if (req->result > 0)
326	req->result = 0;	803	SvIV_set (sv_result, 0);
327	/* FALLTHROUGH */	804	/* FALLTHROUGH */
328		805
329	default:	806	default:
330	PUSHs (sv_2mortal (newSViv (req->result)));	807	PUSHs (sv_result);
331	break;	808	break;
332	}	809	}
333		810
334	errno = req->errorno;	811	errno = req->errorno;
335		812
336	PUTBACK;	813	PUTBACK;
337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	814	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
338	SPAGAIN;	815	SPAGAIN;
339		816
		817	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		818	SvREFCNT_dec (sv_result);
		819	else
		820	sv_result_cache = sv_result;
		821
340	FREETMPS;	822	FREETMPS;
341	LEAVE;	823	LEAVE;
342		824
343	PUTBACK;	825	PUTBACK;
344	}	826	}
345		827
346	return !!SvTRUE (ERRSV);	828	return !!SvTRUE (ERRSV);
347	}	829	}
348		830
		831	static void
349	static void req_destroy (aio_req req)	832	req_destroy (aio_req req)
350	{	833	{
351	if (req->self)	834	if (req->self)
352	{	835	{
353	sv_unmagic (req->self, PERL_MAGIC_ext);	836	sv_unmagic (req->self, PERL_MAGIC_ext);
354	SvREFCNT_dec (req->self);	837	SvREFCNT_dec (req->self);
355	}	838	}
356		839
357	SvREFCNT_dec (req->sv1);	840	SvREFCNT_dec (req->sv1);
358	SvREFCNT_dec (req->sv2);	841	SvREFCNT_dec (req->sv2);
		842	SvREFCNT_dec (req->sv3);
		843	SvREFCNT_dec (req->sv4);
359	SvREFCNT_dec (req->callback);	844	SvREFCNT_dec (req->callback);
360		845
361	Safefree (req);	846	free (req);
362	}	847	}
363		848
		849	static void
364	static void req_cancel_subs (aio_req grp)	850	req_cancel_subs (aio_req grp)
365	{	851	{
366	aio_req sub;
367
368	if (grp->type != EIO_GROUP)	852	if (grp->type != EIO_GROUP)
369	return;	853	return;
370		854
371	SvREFCNT_dec (grp->sv2);	855	SvREFCNT_dec (grp->sv2);
372	grp->sv2 = 0;	856	grp->sv2 = 0;
373		857
374	eio_grp_cancel (grp);	858	eio_grp_cancel (grp);
375	}	859	}
376		860
377	#ifdef USE_SOCKETS_AS_HANDLES	861	static void ecb_cold
378	# define TO_SOCKET(x) (win32_get_osfhandle (x))	862	create_respipe (void)
379	#else	863	{
380	# define TO_SOCKET(x) (x)	864	if (s_epipe_renew (&respipe))
381	#endif	865	croak ("IO::AIO: unable to initialize result pipe");
		866	}
382		867
383	static void	868	static void
384	create_respipe (void)	869	poll_wait (void)
385	{	870	{
386	int old_readfd = respipe [0];
387
388	if (respipe [1] >= 0)
389	respipe_close (TO_SOCKET (respipe [1]));
390
391	#ifdef _WIN32
392	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
393	#else
394	if (pipe (respipe))
395	#endif
396	croak ("unable to initialize result pipe");
397
398	if (old_readfd >= 0)
399	{
400	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
401	croak ("unable to initialize result pipe(2)");
402
403	respipe_close (respipe [0]);
404	respipe [0] = old_readfd;
405	}
406
407	#ifdef _WIN32
408	int arg = 1;
409	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
410	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
411	#else
412	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
413	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
414	#endif
415	croak ("unable to initialize result pipe(3)");
416
417	respipe_osf [0] = TO_SOCKET (respipe [0]);
418	respipe_osf [1] = TO_SOCKET (respipe [1]);
419	}
420
421	static void poll_wait (void)
422	{
423	fd_set rfd;
424
425	while (eio_nreqs ())	871	while (eio_nreqs ())
426	{	872	{
427	int size;	873	int size;
428		874
429	X_LOCK (reslock);	875	X_LOCK (EIO_POOL->reslock);
430	size = res_queue.size;	876	size = EIO_POOL->res_queue.size;
431	X_UNLOCK (reslock);	877	X_UNLOCK (EIO_POOL->reslock);
432		878
433	if (size)	879	if (size)
434	return;	880	return;
435		881
436	etp_maybe_start_thread ();	882	etp_maybe_start_thread (EIO_POOL);
437		883
438	FD_ZERO (&rfd);	884	s_epipe_wait (&respipe);
439	FD_SET (respipe [0], &rfd);
440
441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
442	}	885	}
443	}	886	}
444		887
445	static int poll_cb (void)	888	static int
		889	poll_cb (void)
446	{	890	{
447	for (;;)	891	for (;;)
448	{	892	{
449	int res = eio_poll ();	893	int res = eio_poll ();
450		894
…		…
456		900
457	poll_wait ();	901	poll_wait ();
458	}	902	}
459	}	903	}
460		904
461	static void atfork_child (void)	905	static void ecb_cold
		906	reinit (void)
462	{	907	{
463	create_respipe ();	908	create_respipe ();
		909
		910	if (eio_init (want_poll, done_poll) < 0)
		911	croak ("IO::AIO: unable to initialise eio library");
464	}	912	}
		913
		914	/*****************************************************************************/
465		915
466	static SV *	916	static SV *
467	get_cb (SV *cb_sv)	917	get_cb (SV *cb_sv)
468	{	918	{
469	HV *st;	919	SvGETMAGIC (cb_sv);
470	GV *gvp;	920	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		921	}
		922
		923	static aio_req ecb_noinline
		924	dreq (SV *callback)
		925	{
471	CV *cv;	926	SV *cb_cv;
		927	aio_req req;
		928	int req_pri = next_pri;
		929	next_pri = EIO_PRI_DEFAULT;
472		930
473	if (!SvOK (cb_sv))	931	cb_cv = get_cb (callback);
		932
		933	req = calloc (sizeof (*req), 1);
		934	if (!req)
		935	croak ("out of memory during eio_req allocation");
		936
		937	req->callback = SvREFCNT_inc (cb_cv);
		938	req->pri = req_pri;
		939
474	return 0;	940	return req;
475
476	cv = sv_2cv (cb_sv, &st, &gvp, 0);
477
478	if (!cv)
479	croak ("IO::AIO callback must be undef or a CODE reference");
480
481	return (SV *)cv;
482	}	941	}
483		942
484	#define dREQ \	943	#define dREQ \
485	SV *cb_cv; \	944	aio_req req = dreq (callback); \
486	aio_req req; \
487	int req_pri = next_pri; \
488	next_pri = EIO_PRI_DEFAULT; \
489	\
490	cb_cv = get_cb (callback); \
491	\
492	Newz (0, req, 1, eio_req); \
493	if (!req) \
494	croak ("out of memory during eio_req allocation"); \
495	\
496	req->callback = SvREFCNT_inc (cb_cv); \
497	req->pri = req_pri
498		945
499	#define REQ_SEND \	946	#define REQ_SEND \
500	PUTBACK; \	947	PUTBACK; \
501	req_submit (req); \	948	req_submit (req); \
502	SPAGAIN; \	949	SPAGAIN; \
503	\	950	\
504	if (GIMME_V != G_VOID) \	951	if (GIMME_V != G_VOID) \
505	XPUSHs (req_sv (req, AIO_REQ_KLASS));	952	XPUSHs (req_sv (req, aio_req_stash));
506		953
		954	ecb_inline void
		955	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		956	{
		957	if (expect_false (SvROK (path)))
		958	{
		959	SV *rv = SvRV (path);
		960	SV *wdob;
		961
		962	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		963	{
		964	path = AvARRAY (rv)[1];
		965	wdob = AvARRAY (rv)[0];
		966
		967	if (SvOK (wdob))
		968	{
		969	*wd = SvAIO_WD (wdob);
		970	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		971	}
		972	else
		973	*wd = EIO_INVALID_WD;
		974	}
		975	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		976	{
		977	*wd = (aio_wd)(long)SvIVX (rv);
		978	*wdsv = SvREFCNT_inc_NN (rv);
		979	*ptr = ".";
		980	return; /* path set to "." */
		981	}
		982	else
		983	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		984	}
		985
		986	*pathsv = newSVsv (path);
		987	*ptr = SvPVbyte_nolen (*pathsv);
		988	}
		989
		990	static void ecb_noinline
		991	req_set_path1 (aio_req req, SV *path)
		992	{
		993	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		994	}
		995
		996	static void ecb_noinline
		997	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		998	{
		999	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1000
		1001	switch (SvTYPE (rv))
		1002	{
		1003	case SVt_PVIO:
		1004	case SVt_PVLV:
		1005	case SVt_PVGV:
		1006	req->type = type_fh;
		1007	req->sv1 = newSVsv (fh_or_path);
		1008	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1009	break;
		1010
		1011	default:
		1012	req->type = type_path;
		1013	req_set_path1 (req, fh_or_path);
		1014	break;
		1015	}
		1016	}
		1017
		1018	/*****************************************************************************/
		1019
		1020	static void
		1021	ts_set (struct timespec *ts, NV value)
		1022	{
		1023	ts->tv_sec = value;
		1024	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1025	}
		1026
		1027	static NV
		1028	ts_get (const struct timespec *ts)
		1029	{
		1030	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1031	}
		1032
		1033	/*****************************************************************************/
		1034
		1035	XS(boot_IO__AIO) ecb_cold;
		1036
507	MODULE = IO::AIO PACKAGE = IO::AIO	1037	MODULE = IO::AIO PACKAGE = IO::AIO
508		1038
509	PROTOTYPES: ENABLE	1039	PROTOTYPES: ENABLE
510		1040
511	BOOT:	1041	BOOT:
512	{	1042	{
		1043	static const struct {
		1044	const char *name;
		1045	IV iv;
		1046	} *civ, const_iv[] = {
		1047	# define const_niv(name, value) { # name, (IV) value },
		1048	# define const_iv(name) { # name, (IV) name },
		1049	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1050
		1051	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1052	/* the first block can be undef if missing */
		1053	const_iv (ENOSYS)
		1054	const_iv (EXDEV)
		1055	const_iv (EBADR)
		1056
		1057	/* for lseek */
		1058	const_iv (SEEK_DATA)
		1059	const_iv (SEEK_HOLE)
		1060
		1061	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1062	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1063	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1064	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1065	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1066	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1067
		1068	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1069	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1070	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1071	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1072	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1073
		1074	/* the second block will be 0 when missing */
		1075	const_iv (O_ACCMODE)
		1076
		1077	const_iv (O_RDONLY)
		1078	const_iv (O_WRONLY)
		1079	const_iv (O_RDWR)
		1080	const_iv (O_CREAT)
		1081	const_iv (O_TRUNC)
		1082	const_iv (O_EXCL)
		1083	const_iv (O_APPEND)
		1084
		1085	const_iv (O_ASYNC)
		1086	const_iv (O_DIRECT)
		1087	const_iv (O_NOATIME)
		1088
		1089	const_iv (O_CLOEXEC)
		1090	const_iv (O_NOCTTY)
		1091	const_iv (O_NOFOLLOW)
		1092	const_iv (O_NONBLOCK)
		1093	const_iv (O_EXEC)
		1094	const_iv (O_SEARCH)
		1095	const_iv (O_DIRECTORY)
		1096	const_iv (O_DSYNC)
		1097	const_iv (O_RSYNC)
		1098	const_iv (O_SYNC)
		1099	const_iv (O_PATH)
		1100	const_iv (O_TMPFILE)
		1101	const_iv (O_TTY_INIT)
		1102
		1103	const_iv (S_IFIFO)
		1104	const_iv (S_IFCHR)
		1105	const_iv (S_IFBLK)
		1106	const_iv (S_IFLNK)
		1107	const_iv (S_IFREG)
		1108	const_iv (S_IFDIR)
		1109	const_iv (S_IFWHT)
		1110	const_iv (S_IFSOCK)
		1111	const_iv (S_IFMT)
		1112
		1113	const_iv (ST_RDONLY)
		1114	const_iv (ST_NOSUID)
		1115	const_iv (ST_NODEV)
		1116	const_iv (ST_NOEXEC)
		1117	const_iv (ST_SYNCHRONOUS)
		1118	const_iv (ST_MANDLOCK)
		1119	const_iv (ST_WRITE)
		1120	const_iv (ST_APPEND)
		1121	const_iv (ST_IMMUTABLE)
		1122	const_iv (ST_NOATIME)
		1123	const_iv (ST_NODIRATIME)
		1124	const_iv (ST_RELATIME)
		1125
		1126	const_iv (PROT_NONE)
		1127	const_iv (PROT_EXEC)
		1128	const_iv (PROT_READ)
		1129	const_iv (PROT_WRITE)
		1130
		1131	const_iv (MAP_PRIVATE)
		1132	const_iv (MAP_SHARED)
		1133	const_iv (MAP_FIXED)
		1134	const_iv (MAP_ANONYMOUS)
		1135
		1136	/* linuxish */
		1137	const_iv (MAP_LOCKED)
		1138	const_iv (MAP_NORESERVE)
		1139	const_iv (MAP_POPULATE)
		1140	const_iv (MAP_NONBLOCK)
		1141	const_iv (MAP_GROWSDOWN)
		1142	const_iv (MAP_32BIT)
		1143	const_iv (MAP_HUGETLB)
		1144	const_iv (MAP_STACK)
		1145
		1146	const_iv (MREMAP_MAYMOVE)
		1147	const_iv (MREMAP_FIXED)
		1148
		1149	const_iv (F_DUPFD_CLOEXEC)
		1150
		1151	const_iv (MSG_CMSG_CLOEXEC)
		1152	const_iv (SOCK_CLOEXEC)
		1153
		1154	const_iv (F_OFD_GETLK)
		1155	const_iv (F_OFD_SETLK)
		1156	const_iv (F_OFD_GETLKW)
		1157
		1158	const_iv (FIFREEZE)
		1159	const_iv (FITHAW)
		1160	const_iv (FITRIM)
		1161	const_iv (FICLONE)
		1162	const_iv (FICLONERANGE)
		1163	const_iv (FIDEDUPERANGE)
		1164
		1165	const_iv (FS_IOC_GETFLAGS)
		1166	const_iv (FS_IOC_SETFLAGS)
		1167	const_iv (FS_IOC_GETVERSION)
		1168	const_iv (FS_IOC_SETVERSION)
		1169	const_iv (FS_IOC_FIEMAP)
		1170	const_iv (FS_IOC_FSGETXATTR)
		1171	const_iv (FS_IOC_FSSETXATTR)
		1172	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1173	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1174	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1175
		1176	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1177
		1178	const_iv (FS_SECRM_FL)
		1179	const_iv (FS_UNRM_FL)
		1180	const_iv (FS_COMPR_FL)
		1181	const_iv (FS_SYNC_FL)
		1182	const_iv (FS_IMMUTABLE_FL)
		1183	const_iv (FS_APPEND_FL)
		1184	const_iv (FS_NODUMP_FL)
		1185	const_iv (FS_NOATIME_FL)
		1186	const_iv (FS_DIRTY_FL)
		1187	const_iv (FS_COMPRBLK_FL)
		1188	const_iv (FS_NOCOMP_FL)
		1189	const_iv (FS_ENCRYPT_FL)
		1190	const_iv (FS_BTREE_FL)
		1191	const_iv (FS_INDEX_FL)
		1192	const_iv (FS_JOURNAL_DATA_FL)
		1193	const_iv (FS_NOTAIL_FL)
		1194	const_iv (FS_DIRSYNC_FL)
		1195	const_iv (FS_TOPDIR_FL)
		1196	const_iv (FS_FL_USER_MODIFIABLE)
		1197
		1198	const_iv (FS_XFLAG_REALTIME)
		1199	const_iv (FS_XFLAG_PREALLOC)
		1200	const_iv (FS_XFLAG_IMMUTABLE)
		1201	const_iv (FS_XFLAG_APPEND)
		1202	const_iv (FS_XFLAG_SYNC)
		1203	const_iv (FS_XFLAG_NOATIME)
		1204	const_iv (FS_XFLAG_NODUMP)
		1205	const_iv (FS_XFLAG_RTINHERIT)
		1206	const_iv (FS_XFLAG_PROJINHERIT)
		1207	const_iv (FS_XFLAG_NOSYMLINKS)
		1208	const_iv (FS_XFLAG_EXTSIZE)
		1209	const_iv (FS_XFLAG_EXTSZINHERIT)
		1210	const_iv (FS_XFLAG_NODEFRAG)
		1211	const_iv (FS_XFLAG_FILESTREAM)
		1212	const_iv (FS_XFLAG_DAX)
		1213	const_iv (FS_XFLAG_HASATTR)
		1214
		1215	const_iv (FIEMAP_FLAG_SYNC)
		1216	const_iv (FIEMAP_FLAG_XATTR)
		1217	const_iv (FIEMAP_FLAGS_COMPAT)
		1218	const_iv (FIEMAP_EXTENT_LAST)
		1219	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1220	const_iv (FIEMAP_EXTENT_DELALLOC)
		1221	const_iv (FIEMAP_EXTENT_ENCODED)
		1222	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1223	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1224	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1225	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1226	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1227	const_iv (FIEMAP_EXTENT_MERGED)
		1228	const_iv (FIEMAP_EXTENT_SHARED)
		1229
		1230	const_iv (SPLICE_F_MOVE)
		1231	const_iv (SPLICE_F_NONBLOCK)
		1232	const_iv (SPLICE_F_MORE)
		1233	const_iv (SPLICE_F_GIFT)
		1234
		1235	const_iv (EFD_CLOEXEC)
		1236	const_iv (EFD_NONBLOCK)
		1237	const_iv (EFD_SEMAPHORE)
		1238
		1239	const_iv (CLOCK_REALTIME)
		1240	const_iv (CLOCK_MONOTONIC)
		1241	const_iv (CLOCK_BOOTTIME)
		1242	const_iv (CLOCK_REALTIME_ALARM)
		1243	const_iv (CLOCK_BOOTTIME_ALARM)
		1244
		1245	const_iv (TFD_NONBLOCK)
		1246	const_iv (TFD_CLOEXEC)
		1247
		1248	const_iv (TFD_TIMER_ABSTIME)
		1249	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1250
		1251	/* these are libeio constants, and are independent of gendef0 */
		1252	const_eio (SEEK_SET)
		1253	const_eio (SEEK_CUR)
		1254	const_eio (SEEK_END)
		1255
		1256	const_eio (MCL_FUTURE)
		1257	const_eio (MCL_CURRENT)
		1258
		1259	const_eio (MS_ASYNC)
		1260	const_eio (MS_INVALIDATE)
		1261	const_eio (MS_SYNC)
		1262
		1263	const_eio (MT_MODIFY)
		1264
		1265	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1266	const_eio (SYNC_FILE_RANGE_WRITE)
		1267	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1268
		1269	const_eio (FALLOC_FL_KEEP_SIZE)
		1270	const_eio (FALLOC_FL_PUNCH_HOLE)
		1271	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1272	const_eio (FALLOC_FL_ZERO_RANGE)
		1273	const_eio (FALLOC_FL_INSERT_RANGE)
		1274	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1275
		1276	const_eio (RENAME_NOREPLACE)
		1277	const_eio (RENAME_EXCHANGE)
		1278	const_eio (RENAME_WHITEOUT)
		1279
		1280	const_eio (READDIR_DENTS)
		1281	const_eio (READDIR_DIRS_FIRST)
		1282	const_eio (READDIR_STAT_ORDER)
		1283	const_eio (READDIR_FOUND_UNKNOWN)
		1284
		1285	const_eio (DT_UNKNOWN)
		1286	const_eio (DT_FIFO)
		1287	const_eio (DT_CHR)
		1288	const_eio (DT_DIR)
		1289	const_eio (DT_BLK)
		1290	const_eio (DT_REG)
		1291	const_eio (DT_LNK)
		1292	const_eio (DT_SOCK)
		1293	const_eio (DT_WHT)
		1294	};
		1295
513	stash = gv_stashpv ("IO::AIO", 1);	1296	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1297	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1298	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1299	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
514		1300
515	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1301	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
516	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1302	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
517	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
518	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
519	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
520	#ifndef _WIN32
521	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
522	#endif
523		1303
524	create_respipe ();	1304	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
525		1305
526	if (eio_init (want_poll, done_poll) < 0)	1306	reinit ();
527	croak ("IO::AIO: unable to initialise eio library");
528
529	/* atfork child called in fifo order, so before eio's handler */
530	X_THREAD_ATFORK (0, 0, atfork_child);
531	}	1307	}
532		1308
533	void	1309	void
		1310	reinit ()
		1311	PROTOTYPE:
		1312
		1313	void
534	max_poll_reqs (int nreqs)	1314	max_poll_reqs (unsigned int nreqs)
535	PROTOTYPE: $	1315	PROTOTYPE: $
536	CODE:	1316	CODE:
537	eio_set_max_poll_reqs (nreqs);	1317	eio_set_max_poll_reqs (nreqs);
538		1318
539	void	1319	void
…		…
541	PROTOTYPE: $	1321	PROTOTYPE: $
542	CODE:	1322	CODE:
543	eio_set_max_poll_time (nseconds);	1323	eio_set_max_poll_time (nseconds);
544		1324
545	void	1325	void
546	min_parallel (int nthreads)	1326	min_parallel (unsigned int nthreads)
547	PROTOTYPE: $	1327	PROTOTYPE: $
548	CODE:	1328	CODE:
549	eio_set_min_parallel (nthreads);	1329	eio_set_min_parallel (nthreads);
550		1330
551	void	1331	void
552	max_parallel (int nthreads)	1332	max_parallel (unsigned int nthreads)
553	PROTOTYPE: $	1333	PROTOTYPE: $
554	CODE:	1334	CODE:
555	eio_set_max_parallel (nthreads);	1335	eio_set_max_parallel (nthreads);
556		1336
557	void	1337	void
558	max_idle (int nthreads)	1338	max_idle (unsigned int nthreads)
559	PROTOTYPE: $	1339	PROTOTYPE: $
560	CODE:	1340	CODE:
561	eio_set_max_idle (nthreads);	1341	eio_set_max_idle (nthreads);
562		1342
563	void	1343	void
		1344	idle_timeout (unsigned int seconds)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	eio_set_idle_timeout (seconds);
		1348
		1349	void
564	max_outstanding (int maxreqs)	1350	max_outstanding (unsigned int maxreqs)
565	PROTOTYPE: $	1351	PROTOTYPE: $
566	CODE:	1352	CODE:
567	max_outstanding = maxreqs;	1353	max_outstanding = maxreqs;
568		1354
569	void	1355	void
570	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1356	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
571	PROTOTYPE: $$$;$
572	PPCODE:	1357	PPCODE:
573	{	1358	{
574	dREQ;	1359	dREQ;
575		1360
		1361	req->type = EIO_WD_OPEN;
		1362	req_set_path1 (req, pathname);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
576	req->type = EIO_OPEN;	1373	req->type = EIO_OPEN;
577	req->sv1 = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
578	req->ptr1 = SvPVbyte_nolen (req->sv1);
579	req->int1 = flags;	1375	req->int1 = flags;
580	req->int2 = mode;	1376	req->int2 = mode;
581		1377
582	REQ_SEND;	1378	REQ_SEND;
583	}	1379	}
584		1380
585	void	1381	void
586	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1382	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
587	PROTOTYPE: $;$
588	ALIAS:	1383	ALIAS:
589	aio_fsync = EIO_FSYNC	1384	aio_fsync = EIO_FSYNC
590	aio_fdatasync = EIO_FDATASYNC	1385	aio_fdatasync = EIO_FDATASYNC
		1386	aio_syncfs = EIO_SYNCFS
591	PPCODE:	1387	PPCODE:
592	{	1388	{
		1389	int fd = s_fileno_croak (fh, 0);
593	dREQ;	1390	dREQ;
594		1391
595	req->type = ix;	1392	req->type = ix;
596	req->sv1 = newSVsv (fh);	1393	req->sv1 = newSVsv (fh);
597	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1394	req->int1 = fd;
598		1395
599	REQ_SEND (req);	1396	REQ_SEND;
600	}	1397	}
601		1398
602	void	1399	void
603	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1400	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
604	PROTOTYPE: $;$
605	PPCODE:	1401	PPCODE:
606	{	1402	{
607	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1403	int fd = s_fileno_croak (fh, 0);
608	dREQ;	1404	dREQ;
609		1405
610	if (close_pipe < 0)	1406	req->type = EIO_SYNC_FILE_RANGE;
		1407	req->sv1 = newSVsv (fh);
		1408	req->int1 = fd;
		1409	req->offs = offset;
		1410	req->size = nbytes;
		1411	req->int2 = flags;
		1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1418	PPCODE:
		1419	{
		1420	int fd = s_fileno_croak (fh, 0);
		1421	dREQ;
		1422
		1423	req->type = EIO_FALLOCATE;
		1424	req->sv1 = newSVsv (fh);
		1425	req->int1 = fd;
		1426	req->int2 = mode;
		1427	req->offs = offset;
		1428	req->size = len;
		1429
		1430	REQ_SEND;
		1431	}
		1432
		1433	void
		1434	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1435	PPCODE:
		1436	{
		1437	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1438	int fd = s_fileno_croak (fh, 0);
		1439	dREQ;
		1440
		1441	if (expect_false (close_fd < 0))
611	{	1442	{
612	int pipefd [2];	1443	int pipefd [2];
613		1444
		1445	if (
		1446	#ifdef _WIN32
		1447	_pipe (pipefd, 1, _O_BINARY) < 0
		1448	#else
614	if (pipe (pipefd) < 0	1449	pipe (pipefd) < 0
615	|| close (pipefd [1]) < 0
616	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1450	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1451	#endif
		1452	|| close (pipefd [1]) < 0
		1453	)
617	abort (); /*D*/	1454	abort (); /*D*/
618		1455
619	close_pipe = pipefd [0];	1456	close_fd = pipefd [0];
620	}	1457	}
621		1458
622	req->type = EIO_DUP2;	1459	req->type = EIO_DUP2;
623	req->int1 = close_pipe;	1460	req->int1 = close_fd;
624	req->sv2 = newSVsv (fh);	1461	req->sv2 = newSVsv (fh);
625	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1462	req->int2 = fd;
626		1463
627	REQ_SEND (req);	1464	REQ_SEND;
628	}	1465	}
629		1466
630	void	1467	void
		1468	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1469	PPCODE:
		1470	{
		1471	int fd = s_fileno_croak (fh, 0);
		1472	dREQ;
		1473
		1474	req->type = EIO_SEEK;
		1475	req->sv1 = newSVsv (fh);
		1476	req->int1 = fd;
		1477	req->offs = SvVAL64 (offset);
		1478	req->int2 = whence;
		1479
		1480	REQ_SEND;
		1481	}
		1482
		1483	void
631	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1484	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
632	ALIAS:	1485	ALIAS:
633	aio_read = EIO_READ	1486	aio_read = EIO_READ
634	aio_write = EIO_WRITE	1487	aio_write = EIO_WRITE
635	PROTOTYPE: $$$$$;$
636	PPCODE:	1488	PPCODE:
637	{	1489	{
638	STRLEN svlen;	1490	STRLEN svlen;
		1491	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
639	char *svptr = SvPVbyte (data, svlen);	1492	char *svptr = SvPVbyte (data, svlen);
640	UV len = SvUV (length);	1493	UV len = SvUV (length);
641
642	SvUPGRADE (data, SVt_PV);
643	SvPOK_on (data);
644		1494
645	if (dataoffset < 0)	1495	if (dataoffset < 0)
646	dataoffset += svlen;	1496	dataoffset += svlen;
647		1497
648	if (dataoffset < 0 || dataoffset > svlen)	1498	if (dataoffset < 0 || dataoffset > svlen)
…		…
654	if (!SvOK (length) || len + dataoffset > svlen)	1504	if (!SvOK (length) || len + dataoffset > svlen)
655	len = svlen - dataoffset;	1505	len = svlen - dataoffset;
656	}	1506	}
657	else	1507	else
658	{	1508	{
659	/* read: grow scalar as necessary */	1509	/* read: check type and grow scalar as necessary */
		1510	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
660	svptr = SvGROW (data, len + dataoffset + 1);	1511	svptr = sv_grow (data, len + dataoffset + 1);
		1512	else if (SvCUR (data) < len + dataoffset)
		1513	croak ("length + dataoffset outside of scalar, and cannot grow");
661	}	1514	}
662
663	if (len < 0)
664	croak ("length must not be negative");
665		1515
666	{	1516	{
667	dREQ;	1517	dREQ;
668		1518
669	req->type = ix;	1519	req->type = ix;
670	req->sv1 = newSVsv (fh);	1520	req->sv1 = newSVsv (fh);
671	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))	1521	req->int1 = fd;
672	: IoOFP (sv_2io (fh)));
673	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1522	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
674	req->size = len;	1523	req->size = len;
675	req->sv2 = SvREFCNT_inc (data);	1524	req->sv2 = SvREFCNT_inc (data);
676	req->ptr2 = (char *)svptr + dataoffset;	1525	req->ptr2 = (char *)svptr + dataoffset;
677	req->stroffset = dataoffset;	1526	req->stroffset = dataoffset;
…		…
685	REQ_SEND;	1534	REQ_SEND;
686	}	1535	}
687	}	1536	}
688		1537
689	void	1538	void
690	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1539	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
691	PROTOTYPE: $$;$	1540	ALIAS:
		1541	aio_ioctl = EIO_IOCTL
		1542	aio_fcntl = EIO_FCNTL
692	PPCODE:	1543	PPCODE:
693	{	1544	{
694	SV *data;	1545	int fd = s_fileno_croak (fh, 0);
		1546	char *svptr;
		1547
		1548	if (SvPOK (arg) || !SvNIOK (arg))
		1549	{
		1550	STRLEN svlen;
		1551	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1552	#ifdef IOCPARM_LEN
		1553	STRLEN need = IOCPARM_LEN (request);
		1554	#else
		1555	STRLEN need = 256;
		1556	#endif
		1557
		1558	if (svlen < need)
		1559	svptr = SvGROW (arg, need);
		1560	}
		1561	else
		1562	svptr = (char *)SvIV (arg);
		1563
		1564	{
		1565	dREQ;
		1566
		1567	req->type = ix;
		1568	req->sv1 = newSVsv (fh);
		1569	req->int1 = fd;
		1570	req->int2 = (long)request;
		1571	req->sv2 = SvREFCNT_inc (arg);
		1572	req->ptr2 = svptr;
		1573
		1574	REQ_SEND;
		1575	}
		1576	}
		1577
		1578	void
		1579	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1580	ALIAS:
		1581	aio_readlink = EIO_READLINK
		1582	aio_realpath = EIO_REALPATH
		1583	PPCODE:
		1584	{
695	dREQ;	1585	dREQ;
696		1586
697	req->type = EIO_READLINK;	1587	req->type = ix;
698	req->sv1 = newSVsv (path);	1588	req_set_path1 (req, pathname);
699	req->ptr1 = SvPVbyte_nolen (req->sv1);
700		1589
701	REQ_SEND;	1590	REQ_SEND;
702	}	1591	}
703		1592
704	void	1593	void
705	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1594	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
706	PROTOTYPE: $$$$;$
707	PPCODE:	1595	PPCODE:
708	{	1596	{
		1597	int ifd = s_fileno_croak (in_fh , 0);
		1598	int ofd = s_fileno_croak (out_fh, 1);
709	dREQ;	1599	dREQ;
710		1600
711	req->type = EIO_SENDFILE;	1601	req->type = EIO_SENDFILE;
712	req->sv1 = newSVsv (out_fh);	1602	req->sv1 = newSVsv (out_fh);
713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1603	req->int1 = ofd;
714	req->sv2 = newSVsv (in_fh);	1604	req->sv2 = newSVsv (in_fh);
715	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1605	req->int2 = ifd;
716	req->offs = SvVAL64 (in_offset);	1606	req->offs = in_offset;
717	req->size = length;	1607	req->size = length;
718		1608
719	REQ_SEND;	1609	REQ_SEND;
720	}	1610	}
721		1611
722	void	1612	void
723	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1613	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
724	PROTOTYPE: $$$;$
725	PPCODE:	1614	PPCODE:
726	{	1615	{
		1616	int fd = s_fileno_croak (fh, 0);
727	dREQ;	1617	dREQ;
728		1618
729	req->type = EIO_READAHEAD;	1619	req->type = EIO_READAHEAD;
730	req->sv1 = newSVsv (fh);	1620	req->sv1 = newSVsv (fh);
731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1621	req->int1 = fd;
732	req->offs = SvVAL64 (offset);	1622	req->offs = offset;
733	req->size = length;	1623	req->size = length;
734		1624
735	REQ_SEND;	1625	REQ_SEND;
736	}	1626	}
737		1627
738	void	1628	void
739	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1629	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
740	ALIAS:	1630	ALIAS:
741	aio_stat = EIO_STAT	1631	aio_stat = EIO_STAT
742	aio_lstat = EIO_LSTAT	1632	aio_lstat = EIO_LSTAT
		1633	aio_statvfs = EIO_STATVFS
743	PPCODE:	1634	PPCODE:
744	{	1635	{
745	dREQ;	1636	dREQ;
746		1637
747	req->sv1 = newSVsv (fh_or_path);	1638	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
748
749	if (SvPOK (req->sv1))
750	{
751	req->type = ix;
752	req->ptr1 = SvPVbyte_nolen (req->sv1);
753	}
754	else
755	{
756	req->type = EIO_FSTAT;
757	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
758	}
759		1639
760	REQ_SEND;	1640	REQ_SEND;
761	}	1641	}
762		1642
763	void	1643	void
		1644	st_xtime ()
		1645	ALIAS:
		1646	st_atime = 1
		1647	st_mtime = 2
		1648	st_ctime = 4
		1649	st_xtime = 7
		1650	PPCODE:
		1651	EXTEND (SP, 3);
		1652	if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1653	if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1654	if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1655
		1656	void
		1657	st_xtimensec ()
		1658	ALIAS:
		1659	st_atimensec = 1
		1660	st_mtimensec = 2
		1661	st_ctimensec = 4
		1662	st_xtimensec = 7
		1663	PPCODE:
		1664	EXTEND (SP, 3);
		1665	if (ix & 1) PUSHs (newSViv (ATIMENSEC));
		1666	if (ix & 2) PUSHs (newSViv (MTIMENSEC));
		1667	if (ix & 4) PUSHs (newSViv (CTIMENSEC));
		1668
		1669	UV
		1670	major (UV dev)
		1671	ALIAS:
		1672	minor = 1
		1673	CODE:
		1674	RETVAL = ix ? minor (dev) : major (dev);
		1675	OUTPUT:
		1676	RETVAL
		1677
		1678	UV
		1679	makedev (UV maj, UV min)
		1680	CODE:
		1681	RETVAL = makedev (maj, min);
		1682	OUTPUT:
		1683	RETVAL
		1684
		1685	void
764	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1686	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
765	PPCODE:	1687	PPCODE:
766	{	1688	{
767	dREQ;	1689	dREQ;
768		1690
769	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1691	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
770	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1692	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
771	req->sv1 = newSVsv (fh_or_path);	1693	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
772
773	if (SvPOK (req->sv1))
774	{
775	req->type = EIO_UTIME;
776	req->ptr1 = SvPVbyte_nolen (req->sv1);
777	}
778	else
779	{
780	req->type = EIO_FUTIME;
781	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
782	}
783		1694
784	REQ_SEND;	1695	REQ_SEND;
785	}	1696	}
786		1697
787	void	1698	void
788	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1699	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
789	PPCODE:	1700	PPCODE:
790	{	1701	{
791	dREQ;	1702	dREQ;
792		1703
793	req->sv1 = newSVsv (fh_or_path);
794	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1704	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
795		1705	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
796	if (SvPOK (req->sv1))
797	{
798	req->type = EIO_TRUNCATE;
799	req->ptr1 = SvPVbyte_nolen (req->sv1);
800	}
801	else
802	{
803	req->type = EIO_FTRUNCATE;
804	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
805	}
806		1706
807	REQ_SEND;	1707	REQ_SEND;
808	}	1708	}
809		1709
810	void	1710	void
811	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1711	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
812	ALIAS:
813	aio_chmod = EIO_CHMOD
814	aio_mkdir = EIO_MKDIR
815	PPCODE:	1712	PPCODE:
816	{	1713	{
817	dREQ;	1714	dREQ;
818		1715
819	req->int2 = mode;	1716	req->int2 = mode;
820	req->sv1 = newSVsv (fh_or_path);	1717	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
821
822	if (SvPOK (req->sv1))
823	{
824	req->type = ix;
825	req->ptr1 = SvPVbyte_nolen (req->sv1);
826	}
827	else
828	{
829	req->type = EIO_FCHMOD;
830	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
831	}
832		1718
833	REQ_SEND;	1719	REQ_SEND;
834	}	1720	}
835		1721
836	void	1722	void
837	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1723	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
838	PPCODE:	1724	PPCODE:
839	{	1725	{
840	dREQ;	1726	dREQ;
841		1727
842	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1728	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
843	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1729	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
844	req->sv1 = newSVsv (fh_or_path);	1730	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
845
846	if (SvPOK (req->sv1))
847	{
848	req->type = EIO_CHOWN;
849	req->ptr1 = SvPVbyte_nolen (req->sv1);
850	}
851	else
852	{
853	req->type = EIO_FCHOWN;
854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
855	}
856		1731
857	REQ_SEND;	1732	REQ_SEND;
858	}	1733	}
859		1734
860	void	1735	void
		1736	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
		1740
		1741	req->type = EIO_READDIR;
		1742	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1743
		1744	if (flags & EIO_READDIR_DENTS)
		1745	req->int1 |= EIO_READDIR_CUSTOM2;
		1746
		1747	req_set_path1 (req, pathname);
		1748
		1749	REQ_SEND;
		1750	}
		1751
		1752	void
		1753	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1754	PPCODE:
		1755	{
		1756	dREQ;
		1757
		1758	req->type = EIO_MKDIR;
		1759	req->int2 = mode;
		1760	req_set_path1 (req, pathname);
		1761
		1762	REQ_SEND;
		1763	}
		1764
		1765	void
861	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1766	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
862	ALIAS:	1767	ALIAS:
863	aio_unlink = EIO_UNLINK	1768	aio_unlink = EIO_UNLINK
864	aio_rmdir = EIO_RMDIR	1769	aio_rmdir = EIO_RMDIR
865	aio_readdir = EIO_READDIR	1770	aio_readdir = EIO_READDIR
866	PPCODE:	1771	PPCODE:
867	{	1772	{
868	dREQ;	1773	dREQ;
869		1774
870	req->type = ix;	1775	req->type = ix;
871	req->sv1 = newSVsv (pathname);	1776	req_set_path1 (req, pathname);
872	req->ptr1 = SvPVbyte_nolen (req->sv1);
873		1777
874	REQ_SEND;	1778	REQ_SEND;
875	}	1779	}
876		1780
877	void	1781	void
878	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1782	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
879	ALIAS:	1783	ALIAS:
880	aio_link = EIO_LINK	1784	aio_link = EIO_LINK
881	aio_symlink = EIO_SYMLINK	1785	aio_symlink = EIO_SYMLINK
882	aio_rename = EIO_RENAME	1786	aio_rename = EIO_RENAME
883	PPCODE:	1787	PPCODE:
884	{	1788	{
		1789	eio_wd wd2 = 0;
885	dREQ;	1790	dREQ;
886		1791
887	req->type = ix;	1792	req->type = ix;
888	req->sv1 = newSVsv (oldpath);	1793	req_set_path1 (req, oldpath);
889	req->ptr1 = SvPVbyte_nolen (req->sv1);	1794	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
890	req->sv2 = newSVsv (newpath);	1795	req->int3 = (long)wd2;
891	req->ptr2 = SvPVbyte_nolen (req->sv2);
892		1796
893	REQ_SEND;	1797	REQ_SEND;
894	}	1798	}
895		1799
896	void	1800	void
		1801	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1802	PPCODE:
		1803	{
		1804	eio_wd wd2 = 0;
		1805	dREQ;
		1806
		1807	req->type = EIO_RENAME;
		1808	req_set_path1 (req, oldpath);
		1809	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1810	req->int2 = flags;
		1811	req->int3 = (long)wd2;
		1812
		1813	REQ_SEND;
		1814	}
		1815
		1816	void
897	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1817	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
898	PPCODE:	1818	PPCODE:
899	{	1819	{
900	dREQ;	1820	dREQ;
901		1821
902	req->type = EIO_MKNOD;	1822	req->type = EIO_MKNOD;
903	req->sv1 = newSVsv (pathname);
904	req->ptr1 = SvPVbyte_nolen (req->sv1);
905	req->int2 = (mode_t)mode;	1823	req->int2 = (mode_t)mode;
906	req->offs = dev;	1824	req->offs = dev;
		1825	req_set_path1 (req, pathname);
907		1826
908	REQ_SEND;	1827	REQ_SEND;
909	}	1828	}
910		1829
911	void	1830	void
		1831	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1832	ALIAS:
		1833	aio_mtouch = EIO_MTOUCH
		1834	aio_msync = EIO_MSYNC
		1835	PPCODE:
		1836	{
		1837	STRLEN svlen;
		1838	char *svptr = SvPVbyte (data, svlen);
		1839	UV len = SvUV (length);
		1840
		1841	if (flags < 0)
		1842	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1843
		1844	if (offset < 0)
		1845	offset += svlen;
		1846
		1847	if (offset < 0 || offset > svlen)
		1848	croak ("offset outside of scalar");
		1849
		1850	if (!SvOK (length) || len + offset > svlen)
		1851	len = svlen - offset;
		1852
		1853	{
		1854	dREQ;
		1855
		1856	req->type = ix;
		1857	req->sv2 = SvREFCNT_inc (data);
		1858	req->ptr2 = (char *)svptr + offset;
		1859	req->size = len;
		1860	req->int1 = flags;
		1861
		1862	REQ_SEND;
		1863	}
		1864	}
		1865
		1866	void
		1867	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1868	PPCODE:
		1869	{
		1870	STRLEN svlen;
		1871	char *svptr = SvPVbyte (data, svlen);
		1872	UV len = SvUV (length);
		1873
		1874	if (offset < 0)
		1875	offset += svlen;
		1876
		1877	if (offset < 0 || offset > svlen)
		1878	croak ("offset outside of scalar");
		1879
		1880	if (!SvOK (length) || len + offset > svlen)
		1881	len = svlen - offset;
		1882
		1883	{
		1884	dREQ;
		1885
		1886	req->type = EIO_MLOCK;
		1887	req->sv2 = SvREFCNT_inc (data);
		1888	req->ptr2 = (char *)svptr + offset;
		1889	req->size = len;
		1890
		1891	REQ_SEND;
		1892	}
		1893	}
		1894
		1895	void
		1896	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1897	PPCODE:
		1898	{
		1899	dREQ;
		1900
		1901	req->type = EIO_MLOCKALL;
		1902	req->int1 = flags;
		1903
		1904	REQ_SEND;
		1905	}
		1906
		1907	void
		1908	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1909	PPCODE:
		1910	{
		1911	int fd = s_fileno_croak (fh, 0);
		1912	dREQ;
		1913
		1914	req->type = EIO_CUSTOM;
		1915	req->sv1 = newSVsv (fh);
		1916	req->int1 = fd;
		1917
		1918	req->feed = fiemap;
		1919	#if HAVE_FIEMAP
		1920	/* keep our fingers crossed that the next two types are 64 bit */
		1921	req->offs = start;
		1922	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1923	req->int2 = flags;
		1924	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1925	#endif
		1926
		1927	REQ_SEND;
		1928	}
		1929
		1930	void
		1931	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1932	PPCODE:
		1933	{
		1934	char *svptr = 0;
		1935
		1936	sv_clear_foreign (data);
		1937
		1938	if (length) /* known length, directly read into scalar */
		1939	{
		1940	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1941	svptr = sv_grow (data, length + 1);
		1942	else if (SvCUR (data) < length)
		1943	croak ("length outside of scalar, and cannot grow");
		1944	else
		1945	svptr = SvPVbyte_nolen (data);
		1946	}
		1947
		1948	{
		1949	dREQ;
		1950
		1951	req->type = EIO_SLURP;
		1952	req_set_path1 (req, pathname);
		1953	req->offs = offset;
		1954	req->size = length;
		1955	req->sv2 = SvREFCNT_inc (data);
		1956	req->ptr2 = svptr;
		1957
		1958	if (!SvREADONLY (data))
		1959	{
		1960	SvREADONLY_on (data);
		1961	req->flags |= FLAG_SV2_RO_OFF;
		1962	}
		1963
		1964	REQ_SEND;
		1965	}
		1966	}
		1967
		1968	void
912	aio_busy (double delay, SV *callback=&PL_sv_undef)	1969	aio_busy (double delay, SV *callback = &PL_sv_undef)
913	PPCODE:	1970	PPCODE:
914	{	1971	{
915	dREQ;	1972	dREQ;
916		1973
917	req->type = EIO_BUSY;	1974	req->type = EIO_BUSY;
…		…
919		1976
920	REQ_SEND;	1977	REQ_SEND;
921	}	1978	}
922		1979
923	void	1980	void
924	aio_group (SV *callback=&PL_sv_undef)	1981	aio_group (SV *callback = &PL_sv_undef)
925	PROTOTYPE: ;$
926	PPCODE:	1982	PPCODE:
927	{	1983	{
928	dREQ;	1984	dREQ;
929		1985
930	req->type = EIO_GROUP;	1986	req->type = EIO_GROUP;
931		1987
		1988	PUTBACK;
932	req_submit (req);	1989	req_submit (req);
		1990	SPAGAIN;
		1991
933	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1992	XPUSHs (req_sv (req, aio_grp_stash));
934	}	1993	}
935		1994
936	void	1995	void
937	aio_nop (SV *callback=&PL_sv_undef)	1996	aio_nop (SV *callback = &PL_sv_undef)
938	ALIAS:	1997	ALIAS:
939	aio_nop = EIO_NOP	1998	aio_nop = EIO_NOP
940	aio_sync = EIO_SYNC	1999	aio_sync = EIO_SYNC
941	PPCODE:	2000	PPCODE:
942	{	2001	{
…		…
946		2005
947	REQ_SEND;	2006	REQ_SEND;
948	}	2007	}
949		2008
950	int	2009	int
951	aioreq_pri (int pri = 0)	2010	aioreq_pri (int pri = NO_INIT)
952	PROTOTYPE: ;$
953	CODE:	2011	CODE:
954	RETVAL = next_pri;	2012	RETVAL = next_pri;
955	if (items > 0)	2013	if (items > 0)
956	{	2014	{
957	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	2015	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
969	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	2027	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
970	next_pri = nice;	2028	next_pri = nice;
971		2029
972	void	2030	void
973	flush ()	2031	flush ()
974	PROTOTYPE:
975	CODE:	2032	CODE:
976	while (eio_nreqs ())	2033	while (eio_nreqs ())
977	{	2034	{
978	poll_wait ();	2035	poll_wait ();
979	poll_cb ();	2036	poll_cb ();
980	}	2037	}
981		2038
982	int	2039	int
983	poll()	2040	poll ()
984	PROTOTYPE:
985	CODE:	2041	CODE:
986	poll_wait ();	2042	poll_wait ();
987	RETVAL = poll_cb ();	2043	RETVAL = poll_cb ();
988	OUTPUT:	2044	OUTPUT:
989	RETVAL	2045	RETVAL
990		2046
991	int	2047	int
992	poll_fileno()	2048	poll_fileno ()
993	PROTOTYPE:
994	CODE:	2049	CODE:
995	RETVAL = respipe [0];	2050	RETVAL = s_epipe_fd (&respipe);
996	OUTPUT:	2051	OUTPUT:
997	RETVAL	2052	RETVAL
998		2053
999	int	2054	int
1000	poll_cb(...)	2055	poll_cb (...)
1001	PROTOTYPE:	2056	PROTOTYPE:
1002	CODE:	2057	CODE:
1003	RETVAL = poll_cb ();	2058	RETVAL = poll_cb ();
1004	OUTPUT:	2059	OUTPUT:
1005	RETVAL	2060	RETVAL
1006		2061
1007	void	2062	void
1008	poll_wait()	2063	poll_wait ()
1009	PROTOTYPE:
1010	CODE:	2064	CODE:
1011	poll_wait ();	2065	poll_wait ();
1012		2066
1013	int	2067	int
1014	nreqs()	2068	nreqs ()
1015	PROTOTYPE:
1016	CODE:	2069	CODE:
1017	RETVAL = eio_nreqs ();	2070	RETVAL = eio_nreqs ();
1018	OUTPUT:	2071	OUTPUT:
1019	RETVAL	2072	RETVAL
1020		2073
1021	int	2074	int
1022	nready()	2075	nready ()
1023	PROTOTYPE:
1024	CODE:	2076	CODE:
1025	RETVAL = eio_nready ();	2077	RETVAL = eio_nready ();
1026	OUTPUT:	2078	OUTPUT:
1027	RETVAL	2079	RETVAL
1028		2080
1029	int	2081	int
1030	npending()	2082	npending ()
1031	PROTOTYPE:
1032	CODE:	2083	CODE:
1033	RETVAL = eio_npending ();	2084	RETVAL = eio_npending ();
1034	OUTPUT:	2085	OUTPUT:
1035	RETVAL	2086	RETVAL
1036		2087
1037	int	2088	int
1038	nthreads()	2089	nthreads ()
1039	PROTOTYPE:
1040	CODE:	2090	CODE:
1041	RETVAL = eio_nthreads ();	2091	RETVAL = eio_nthreads ();
1042	OUTPUT:	2092	OUTPUT:
1043	RETVAL	2093	RETVAL
1044		2094
		2095	int
		2096	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2097	CODE:
		2098	RETVAL = posix_fadvise (fh, offset, length, advice);
		2099	OUTPUT:
		2100	RETVAL
		2101
		2102	IV
		2103	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2104	CODE:
		2105	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2106	OUTPUT:
		2107	RETVAL
		2108
		2109	void
		2110	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2111	PPCODE:
		2112	sv_clear_foreign (scalar);
		2113	{
		2114	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2115	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2116	if (addr == (void *)-1)
		2117	XSRETURN_NO;
		2118
		2119	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2120
		2121	if (!(prot & PROT_WRITE))
		2122	SvREADONLY_on (scalar);
		2123
		2124	XSRETURN_YES;
		2125	}
		2126
		2127	void
		2128	munmap (SV *scalar)
		2129	CODE:
		2130	sv_clear_foreign (scalar);
		2131
		2132	SV *
		2133	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2134	CODE:
		2135	{
		2136	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2137	void *new;
		2138
		2139	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2140	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2141
		2142	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2143
		2144	RETVAL = &PL_sv_no;
		2145
		2146	if (new != (void *)-1)
		2147	{
		2148	RETVAL = new == (void *)mg->mg_ptr
		2149	? newSVpvn ("0 but true", 10)
		2150	: &PL_sv_yes;
		2151
		2152	mg->mg_ptr = (char *)new;
		2153	mg->mg_obj = (SV *)new_length;
		2154
		2155	SvPVX (scalar) = mg->mg_ptr;
		2156	SvCUR_set (scalar, new_length);
		2157	}
		2158	}
		2159	OUTPUT:
		2160	RETVAL
		2161
		2162	int
		2163	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2164	ALIAS:
		2165	mprotect = 1
		2166	CODE:
		2167	{
		2168	STRLEN svlen;
		2169	void *addr = SvPVbyte (scalar, svlen);
		2170	STRLEN len = SvUV (length);
		2171
		2172	if (offset < 0)
		2173	offset += svlen;
		2174
		2175	if (offset < 0 || offset > svlen)
		2176	croak ("offset outside of scalar");
		2177
		2178	if (!SvOK (length) || len + offset > svlen)
		2179	len = svlen - offset;
		2180
		2181	addr = (void *)(((intptr_t)addr) + offset);
		2182	eio_page_align (&addr, &len);
		2183
		2184	switch (ix)
		2185	{
		2186	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2187	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2188	}
		2189	}
		2190	OUTPUT:
		2191	RETVAL
		2192
		2193	int
		2194	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2195	CODE:
		2196	{
		2197	STRLEN svlen;
		2198	void *addr = SvPVbyte (scalar, svlen);
		2199	size_t len = SvUV (length);
		2200
		2201	if (offset < 0)
		2202	offset += svlen;
		2203
		2204	if (offset < 0 || offset > svlen)
		2205	croak ("offset outside of scalar");
		2206
		2207	if (!SvOK (length) || len + offset > svlen)
		2208	len = svlen - offset;
		2209
		2210	addr = (void *)(((intptr_t)addr) + offset);
		2211	eio_page_align (&addr, &len);
		2212	#if _POSIX_MEMLOCK_RANGE
		2213	RETVAL = munlock (addr, len);
		2214	#else
		2215	RETVAL = EIO_ENOSYS ();
		2216	#endif
		2217	}
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	munlockall ()
		2223	CODE:
		2224	#if _POSIX_MEMLOCK
		2225	munlockall ();
		2226	#else
		2227	RETVAL = EIO_ENOSYS ();
		2228	#endif
		2229	OUTPUT:
		2230	RETVAL
		2231
		2232	int
		2233	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2234	CODE:
		2235	{
		2236	#if HAVE_LINUX_SPLICE
		2237	loff_t off_in_, off_out_;
		2238	RETVAL = splice (
		2239	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2240	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2241	length, flags
		2242	);
		2243	#else
		2244	RETVAL = EIO_ENOSYS ();
		2245	#endif
		2246	}
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	int
		2251	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2252	CODE:
		2253	#if HAVE_LINUX_SPLICE
		2254	RETVAL = tee (rfh, wfh, length, flags);
		2255	#else
		2256	RETVAL = EIO_ENOSYS ();
		2257	#endif
		2258	OUTPUT:
		2259	RETVAL
		2260
		2261	int
		2262	pipesize (aio_rfd rfh, int new_size = -1)
		2263	PROTOTYPE: $;$
		2264	CODE:
		2265	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2266	if (new_size >= 0)
		2267	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2268	else
		2269	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2270	#else
		2271	errno = ENOSYS;
		2272	RETVAL = -1;
		2273	#endif
		2274	OUTPUT:
		2275	RETVAL
		2276
		2277	void
		2278	pipe2 (int flags = 0)
		2279	PROTOTYPE: ;$
		2280	PPCODE:
		2281	{
		2282	int fd[2];
		2283	int res;
		2284
		2285	if (flags)
		2286	#if HAVE_PIPE2
		2287	res = pipe2 (fd, flags);
		2288	#else
		2289	res = (errno = ENOSYS, -1);
		2290	#endif
		2291	else
		2292	res = pipe (fd);
		2293
		2294	if (!res)
		2295	{
		2296	EXTEND (SP, 2);
		2297	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2298	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2299	}
		2300	}
		2301
		2302	void
		2303	eventfd (unsigned int initval = 0, int flags = 0)
		2304	PPCODE:
		2305	{
		2306	int fd;
		2307	#if HAVE_EVENTFD
		2308	fd = eventfd (initval, flags);
		2309	#else
		2310	fd = (errno = ENOSYS, -1);
		2311	#endif
		2312
		2313	XPUSHs (newmortalFH (fd, O_RDWR));
		2314	}
		2315
		2316	void
		2317	timerfd_create (int clockid, int flags = 0)
		2318	PPCODE:
		2319	{
		2320	int fd;
		2321	#if HAVE_TIMERFD
		2322	fd = timerfd_create (clockid, flags);
		2323	#else
		2324	fd = (errno = ENOSYS, -1);
		2325	#endif
		2326
		2327	XPUSHs (newmortalFH (fd, O_RDWR));
		2328	}
		2329
		2330	void
		2331	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2332	PPCODE:
		2333	{
		2334	int fd = s_fileno_croak (fh, 0);
		2335	#if HAVE_TIMERFD
		2336	int res;
		2337	struct itimerspec its, ots;
		2338
		2339	ts_set (&its.it_interval, interval);
		2340	ts_set (&its.it_value , value);
		2341	res = timerfd_settime (fd, flags, &its, &ots);
		2342
		2343	if (!res)
		2344	{
		2345	EXTEND (SP, 2);
		2346	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2347	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2348	}
		2349	#else
		2350	errno = ENOSYS;
		2351	#endif
		2352	}
		2353
		2354	void
		2355	timerfd_gettime (SV *fh)
		2356	PPCODE:
		2357	{
		2358	int fd = s_fileno_croak (fh, 0);
		2359	#if HAVE_TIMERFD
		2360	int res;
		2361	struct itimerspec ots;
		2362	res = timerfd_gettime (fd, &ots);
		2363
		2364	if (!res)
		2365	{
		2366	EXTEND (SP, 2);
		2367	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2368	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2369	}
		2370	#else
		2371	errno = ENOSYS;
		2372	#endif
		2373	}
		2374
		2375	UV
		2376	get_fdlimit ()
		2377	CODE:
		2378	#if HAVE_RLIMITS
		2379	struct rlimit rl;
		2380	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2381	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2382	#endif
		2383	XSRETURN_UNDEF;
		2384	OUTPUT:
		2385	RETVAL
		2386
		2387	void
		2388	min_fdlimit (UV limit = 0x7fffffffU)
		2389	CODE:
		2390	{
		2391	#if HAVE_RLIMITS
		2392	struct rlimit rl;
		2393	rlim_t orig_rlim_max;
		2394	UV bit;
		2395
		2396	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2397	goto fail;
		2398
		2399	if (rl.rlim_cur == RLIM_INFINITY)
		2400	XSRETURN_YES;
		2401
		2402	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2403
		2404	if (rl.rlim_cur < limit)
		2405	{
		2406	rl.rlim_cur = limit;
		2407
		2408	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2409	rl.rlim_max = rl.rlim_cur;
		2410	}
		2411
		2412	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2413	XSRETURN_YES;
		2414
		2415	if (errno == EPERM)
		2416	{
		2417	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2418	/* our limit overflows a system-wide limit */
		2419	/* try an adaptive algorithm, but do not lower the hardlimit */
		2420	rl.rlim_max = 0;
		2421	for (bit = 0x40000000U; bit; bit >>= 1)
		2422	{
		2423	rl.rlim_max |= bit;
		2424	rl.rlim_cur = rl.rlim_max;
		2425
		2426	/* nevr decrease the hard limit */
		2427	if (rl.rlim_max < orig_rlim_max)
		2428	break;
		2429
		2430	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2431	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2432	}
		2433
		2434	/* now, raise the soft limit to the max permitted */
		2435	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2436	{
		2437	rl.rlim_cur = rl.rlim_max;
		2438	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2439	errno = EPERM;
		2440	}
		2441	}
		2442	#endif
		2443	fail:
		2444	XSRETURN_UNDEF;
		2445	}
		2446
1045	void _on_next_submit (SV *cb)	2447	void _on_next_submit (SV *cb)
1046	CODE:	2448	CODE:
1047	SvREFCNT_dec (on_next_submit);	2449	SvREFCNT_dec (on_next_submit);
1048	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2450	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1049		2451
1050	PROTOTYPES: DISABLE	2452	PROTOTYPES: DISABLE
1051		2453
		2454	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2455
		2456	BOOT:
		2457	{
		2458	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2459	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2460	}
		2461
		2462	void
		2463	DESTROY (SV *self)
		2464	CODE:
		2465	{
		2466	aio_wd wd = SvAIO_WD (self);
		2467	#if HAVE_AT
		2468	{
		2469	SV *callback = &PL_sv_undef;
		2470	dREQ; /* clobbers next_pri :/ */
		2471	next_pri = req->pri; /* restore next_pri */
		2472	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2473	req->type = EIO_WD_CLOSE;
		2474	req->wd = wd;
		2475	REQ_SEND;
		2476	}
		2477	#else
		2478	eio_wd_close_sync (wd);
		2479	#endif
		2480	}
		2481
1052	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2482	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1053		2483
1054	void	2484	void
1055	cancel (aio_req_ornot req)	2485	cancel (aio_req_ornot req)
1056	CODE:	2486	CODE:
1057	eio_cancel (req);	2487	eio_cancel (req);
1058		2488
1059	void	2489	void
1060	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2490	cb (aio_req_ornot req, SV *callback = NO_INIT)
1061	PPCODE:	2491	PPCODE:
1062	{	2492	{
1063	if (GIMME_V != G_VOID)	2493	if (GIMME_V != G_VOID)
1064	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);	2494	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1065		2495
…		…
1110	AV *av;	2540	AV *av;
1111		2541
1112	grp->errorno = errno;	2542	grp->errorno = errno;
1113		2543
1114	av = newAV ();	2544	av = newAV ();
		2545	av_extend (av, items - 1);
1115		2546
1116	for (i = 1; i < items; ++i )	2547	for (i = 1; i < items; ++i )
1117	av_push (av, newSVsv (ST (i)));	2548	av_push (av, newSVsv (ST (i)));
1118		2549
1119	SvREFCNT_dec (grp->sv1);	2550	SvREFCNT_dec (grp->sv1);
…		…
1129	limit (aio_req grp, int limit)	2560	limit (aio_req grp, int limit)
1130	CODE:	2561	CODE:
1131	eio_grp_limit (grp, limit);	2562	eio_grp_limit (grp, limit);
1132		2563
1133	void	2564	void
1134	feed (aio_req grp, SV *callback=&PL_sv_undef)	2565	feed (aio_req grp, SV *callback = &PL_sv_undef)
1135	CODE:	2566	CODE:
1136	{	2567	{
1137	SvREFCNT_dec (grp->sv2);	2568	SvREFCNT_dec (grp->sv2);
1138	grp->sv2 = newSVsv (callback);	2569	grp->sv2 = newSVsv (callback);
		2570	grp->feed = aio_grp_feed;
1139		2571
1140	if (grp->int2 <= 0)	2572	if (grp->int2 <= 0)
1141	grp->int2 = 2;	2573	grp->int2 = 2;
1142		2574
1143	eio_grp_limit (grp, grp->int2);	2575	eio_grp_limit (grp, grp->int2);

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