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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.116 by root, Sat May 10 19:25:33 2008 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 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	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
18	#ifdef _WIN32	47	#ifdef _WIN32
19		48
20	# define EIO_STRUCT_DIRENT Direntry_t
21	# undef malloc
22	# undef free
23
24	// perl overrides all those nice win32 functions	49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
25	# undef open	53	#undef open
26	# undef read	54	#undef read
27	# undef write	55	#undef write
28	# undef send	56	#undef send
29	# undef recv	57	#undef recv
30	# undef stat	58	#undef stat
		59	#undef lstat
31	# undef fstat	60	#undef fstat
32	# define lstat stat
33	# undef truncate	61	#undef truncate
34	# undef ftruncate	62	#undef ftruncate
35	# undef open	63	#undef open
		64	#undef link
36	# undef close	65	#undef close
37	# undef unlink	66	#undef unlink
		67	#undef mkdir
38	# undef rmdir	68	#undef rmdir
39	# undef rename	69	#undef rename
40	# undef lseek	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
41		80
42	# define chown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STAT struct _stati64
43	# define fchown(a,b,c) (errno = ENOSYS, -1)	82	#define EIO_STRUCT_STATI64
44	# define fchmod(a,b) (errno = ENOSYS, -1)
45	# define symlink(a,b) (errno = ENOSYS, -1)
46	# define readlink(a,b,c) (errno = ENOSYS, -1)
47	# define mknod(a,b,c) (errno = ENOSYS, -1)
48	# define truncate(a,b) (errno = ENOSYS, -1)
49	# define ftruncate(fd,o) chsize ((fd), (o))
50	# define fsync(fd) _commit (fd)
51	# define opendir(fd) (errno = ENOSYS, 0)
52	# define readdir(fd) (errno = ENOSYS, -1)
53	# define closedir(fd) (errno = ENOSYS, -1)
54	# define mkdir(a,b) mkdir (a)
55		83
56	#else	84	#else
57		85
58	# include <sys/time.h>	86	#include <sys/time.h>
59	# include <sys/select.h>	87	#include <sys/select.h>
60	# include <unistd.h>	88	#include <unistd.h>
61	# include <utime.h>	89	#include <utime.h>
62	# include <signal.h>	90	#include <signal.h>
63	# define EIO_STRUCT_DIRENT struct dirent
64		91
65	#endif
66
67	#define EIO_STRUCT_STAT Stat_t	92	#define EIO_STRUCT_STAT Stat_t
68		93
69	/* use NV for 32 bit perls as it allows larger offsets */	94	#endif
70	#if IVSIZE >= 8	95
71	# define SvVAL64 SvIV	96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
72	#else	100	#else
73	# define SvVAL64 SvNV	101	# define expect(expr,value) (expr)
74	#endif	102	#endif
75		103
76	static HV *stash;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
77	typedef SV SV8; /* byte-sv, used for argument-checking */	116	typedef SV SV8; /* byte-sv, used for argument-checking */
		117	typedef int aio_rfd; /* read file desriptor */
		118	typedef int aio_wfd; /* write file descriptor */
78		119
79	#define AIO_REQ_KLASS "IO::AIO::REQ"	120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
80	#define AIO_GRP_KLASS "IO::AIO::GRP"
81		121
82	#define EIO_COMMON \	122	#define EIO_REQ_MEMBERS \
83	SV *callback; \	123	SV *callback; \
84	SV *sv1, *sv2; \	124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
85	STRLEN stroffset; \	126	STRLEN stroffset; \
86	SV *self	127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
87		130
88	#include "libeio/eio.h"	131	#include "libeio/eio.h"
89		132
90	static int req_invoke (eio_req *req);	133	static int req_invoke (eio_req *req);
91	#define EIO_FINISH(req) req_invoke (req)	134	#define EIO_FINISH(req) req_invoke (req)
92	static void aio_grp_feed (eio_req *grp);
93	#define EIO_FEED(req) aio_grp_feed (req)
94	static void req_destroy (eio_req *grp);	135	static void req_destroy (eio_req *grp);
95	#define EIO_DESTROY(req) req_destroy (req)	136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
		151	# else
		152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		153	# endif
		154	#endif
		155
		156	/* defines all sorts of constants to 0 unless they are already defined */
		157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
		159
		160	#ifndef makedev
		161	# define makedev(maj,min) (((maj) << 8) | (min))
		162	#endif
		163	#ifndef major
		164	# define major(dev) ((dev) >> 8)
		165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
		169
		170	#if PAGESIZE <= 0
		171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
		173
		174	/*****************************************************************************/
		175
		176	#if !_POSIX_MAPPED_FILES
		177	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		178	# define munmap(addr,length) EIO_ENOSYS ()
		179	#endif
		180
		181	#if !_POSIX_MEMORY_PROTECTION
		182	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		183	#endif
		184
		185	#define FOREIGN_MAGIC PERL_MAGIC_ext
		186
		187	static int ecb_cold
		188	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		189	{
		190	int old_errno = errno;
		191	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		192	errno = old_errno;
		193
		194	mg->mg_obj = 0; /* just in case */
		195
		196	SvREADONLY_off (sv);
		197
		198	if (SvPVX (sv) != mg->mg_ptr)
		199	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		200
		201	SvCUR_set (sv, 0);
		202	SvPVX (sv) = 0;
		203	SvOK_off (sv);
		204
		205	return 0;
		206	}
		207
		208	static MGVTBL mmap_vtbl = {
		209	0, 0, 0, 0, mmap_free
		210	};
		211
		212	static int ecb_cold
		213	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		214	{
		215	free (mg->mg_ptr);
		216	mg->mg_obj = 0; /* just in case */
		217
		218	SvREADONLY_off (sv);
		219
		220	if (SvPVX (sv) != mg->mg_ptr)
		221	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		222
		223	SvCUR_set (sv, 0);
		224	SvPVX (sv) = 0;
		225	SvOK_off (sv);
		226
		227	return 0;
		228	}
		229
		230	static MGVTBL sysfree_vtbl = {
		231	0, 0, 0, 0, sysfree_free
		232	};
		233
		234	/*****************************************************************************/
		235
		236	/* helper: set scalar to foreign ptr with custom free */
		237	static void
		238	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		239	{
		240	sv_force_normal (sv);
		241
		242	/* we store the length in mg_obj, as namlen is I32 :/ */
		243	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		244	->mg_obj = (SV *)length;
		245
		246	SvUPGRADE (sv, SVt_PV); /* nop... */
		247
		248	if (SvLEN (sv))
		249	Safefree (SvPVX (sv));
		250
		251	SvPVX (sv) = (char *)addr;
		252	SvCUR_set (sv, length);
		253	SvLEN_set (sv, 0);
		254	SvPOK_only (sv);
		255	}
		256
		257	static void
		258	sv_clear_foreign (SV *sv)
		259	{
		260	/* todo: iterate over magic and only free ours, but of course */
		261	/* the perl5porters will call that (correct) behaviour buggy */
		262	sv_unmagic (sv, FOREIGN_MAGIC);
		263	}
		264
		265	/*****************************************************************************/
		266
		267	static void
		268	fiemap (eio_req *req)
		269	{
		270	req->result = -1;
		271
		272	#if HAVE_FIEMAP
		273	/* assume some c99 */
		274	struct fiemap *fiemap = 0;
		275	size_t end_offset;
		276	int count = req->int3;
		277
		278	req->flags |= EIO_FLAG_PTR1_FREE;
		279
		280	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		281	/* increase in 3.5kb steps */
		282	if (count < 0)
		283	count = 8;
		284
		285	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		286	errno = ENOMEM;
		287	if (!fiemap)
		288	return;
		289
		290	req->ptr1 = fiemap;
		291
		292	fiemap->fm_start = req->offs;
		293	fiemap->fm_length = req->size;
		294	fiemap->fm_flags = req->int2;
		295	fiemap->fm_extent_count = count;
		296
		297	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		298	return;
		299
		300	if (req->int3 >= 0 /* not autosizing */
		301	|| !fiemap->fm_mapped_extents /* no more extents */
		302	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		303	goto done;
		304
		305	/* else we have to loop -
		306	* it would be tempting (actually I tried that first) to just query the
		307	* number of extents needed, but linux often feels like not returning all
		308	* extents, without telling us it left any out. this complicates
		309	* this quite a bit.
		310	*/
		311
		312	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		313
		314	for (;;)
		315	{
		316	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		317	char scratch[3072];
		318	struct fiemap *incmap = (struct fiemap *)scratch;
		319
		320	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		321	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		322	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		323	incmap->fm_flags = fiemap->fm_flags;
		324	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		325
		326	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		327	return;
		328
		329	if (!incmap->fm_mapped_extents)
		330	goto done;
		331
		332	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		333	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		334	errno = ENOMEM;
		335	if (!fiemap)
		336	return;
		337
		338	req->ptr1 = fiemap;
		339
		340	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		341	{
		342	struct fiemap_extent *e = incmap->fm_extents + count;
		343
		344	if (e->fe_logical + e->fe_length >= end_offset)
		345	goto done;
		346
		347	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		348
		349	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		350	goto done;
		351
		352	}
		353	}
		354
		355	done:
		356	req->result = 0;
		357
		358	#else
		359	errno = ENOSYS;
		360	#endif
		361	}
		362
		363	/*****************************************************************************/
96		364
97	enum {	365	enum {
98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	366	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	367	};
100		368
101	#include "libeio/eio.c"
102
103	typedef eio_req *aio_req;	369	typedef eio_req *aio_req;
104	typedef eio_req *aio_req_ornot;	370	typedef eio_req *aio_req_ornot;
		371	typedef eio_wd aio_wd;
105		372
		373	static SV *on_next_submit;
		374	static int next_pri = EIO_PRI_DEFAULT;
106	static int max_outstanding = 0;	375	static int max_outstanding;
107		376
108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;	377	static s_epipe respipe;
109
110	static int respipe_osf [2], respipe [2] = { -1, -1 };
111		378
112	static void req_destroy (aio_req req);	379	static void req_destroy (aio_req req);
113	static void req_cancel (aio_req req);	380	static void req_cancel (aio_req req);
114		381
115	static void want_poll (void)	382	static void
		383	want_poll (void)
116	{	384	{
117	/* write a dummy byte to the pipe so fh becomes ready */	385	/* write a dummy byte to the pipe so fh becomes ready */
118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	386	s_epipe_signal (&respipe);
119	}	387	}
120		388
121	static void done_poll (void)	389	static void
		390	done_poll (void)
122	{	391	{
123	/* read any signals sent by the worker threads */	392	/* read any signals sent by the worker threads */
124	char buf [4];	393	s_epipe_drain (&respipe);
125	while (respipe_read (respipe [0], buf, 4) == 4)
126	;
127	}	394	}
128		395
129	/* must be called at most once */	396	/* must be called at most once */
130	static SV *req_sv (aio_req req, const char *klass)	397	static SV *
		398	req_sv (aio_req req, HV *stash)
131	{	399	{
132	if (!req->self)	400	if (!req->self)
133	{	401	{
134	req->self = (SV *)newHV ();	402	req->self = (SV *)newHV ();
135	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	403	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
136	}	404	}
137		405
138	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	406	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
139	}	407	}
140		408
141	static aio_req SvAIO_REQ (SV *sv)	409	static SV *
		410	newSVaio_wd (aio_wd wd)
		411	{
		412	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		413	}
		414
		415	static aio_req
		416	SvAIO_REQ (SV *sv)
142	{	417	{
143	MAGIC *mg;	418	MAGIC *mg;
144		419
145	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	420	if (!SvROK (sv)
		421	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		422	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		423	&& SvSTASH (SvRV (sv)) != aio_req_stash
		424	&& !sv_derived_from (sv, "IO::AIO::REQ")))
146	croak ("object of class " AIO_REQ_KLASS " expected");	425	croak ("object of class IO::AIO::REQ expected");
147		426
148	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	427	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
149		428
150	return mg ? (aio_req)mg->mg_ptr : 0;	429	return mg ? (aio_req)mg->mg_ptr : 0;
151	}	430	}
152		431
		432	static aio_wd
		433	SvAIO_WD (SV *sv)
		434	{
		435	if (!SvROK (sv)
		436	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		437	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		438	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		439
		440	return (aio_wd)(long)SvIVX (SvRV (sv));
		441	}
		442
		443	static SV *
		444	newmortalFH (int fd, int flags)
		445	{
		446	if (fd < 0)
		447	return &PL_sv_undef;
		448
		449	GV *gv = (GV *)sv_newmortal ();
		450	char sym[64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
		455
		456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	fd
		462	);
		463
		464	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		465	? (SV *)gv : &PL_sv_undef;
		466	}
		467
		468	static void
153	static void aio_grp_feed (aio_req grp)	469	aio_grp_feed (aio_req grp)
154	{	470	{
155	if (grp->sv2 && SvOK (grp->sv2))	471	if (grp->sv2 && SvOK (grp->sv2))
156	{	472	{
157	dSP;	473	dSP;
158		474
159	ENTER;	475	ENTER;
160	SAVETMPS;	476	SAVETMPS;
161	PUSHMARK (SP);	477	PUSHMARK (SP);
162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	478	XPUSHs (req_sv (grp, aio_grp_stash));
163	PUTBACK;	479	PUTBACK;
164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	480	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
165	SPAGAIN;	481	SPAGAIN;
166	FREETMPS;	482	FREETMPS;
167	LEAVE;	483	LEAVE;
168	}	484	}
169	}	485	}
170		486
		487	static void
		488	req_submit (eio_req *req)
		489	{
		490	eio_submit (req);
		491
		492	if (expect_false (on_next_submit))
		493	{
		494	dSP;
		495	SV *cb = sv_2mortal (on_next_submit);
		496
		497	on_next_submit = 0;
		498
		499	PUSHMARK (SP);
		500	PUTBACK;
		501	call_sv (cb, G_DISCARD | G_EVAL);
		502	}
		503	}
		504
		505	static int
171	static int req_invoke (eio_req *req)	506	req_invoke (eio_req *req)
172	{	507	{
173	dSP;
174
175	if (req->flags & FLAG_SV2_RO_OFF)	508	if (req->flags & FLAG_SV2_RO_OFF)
176	SvREADONLY_off (req->sv2);	509	SvREADONLY_off (req->sv2);
177		510
178	if (!EIO_CANCELLED (req) && SvOK (req->callback))	511	if (!EIO_CANCELLED (req) && req->callback)
179	{	512	{
		513	dSP;
		514	static SV *sv_result_cache; /* caches the result integer SV */
		515	SV *sv_result;
		516
180	ENTER;	517	ENTER;
181	SAVETMPS;	518	SAVETMPS;
182	PUSHMARK (SP);	519	PUSHMARK (SP);
183	EXTEND (SP, 1);	520	EXTEND (SP, 1);
184		521
		522	/* do not recreate the result IV from scratch each time */
		523	if (expect_true (sv_result_cache))
		524	{
		525	sv_result = sv_result_cache; sv_result_cache = 0;
		526	SvIV_set (sv_result, req->result);
		527	SvIOK_only (sv_result);
		528	}
		529	else
		530	{
		531	sv_result = newSViv (req->result);
		532	SvREADONLY_on (sv_result);
		533	}
		534
185	switch (req->type)	535	switch (req->type)
186	{	536	{
		537	case EIO_WD_OPEN:
		538	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		539	break;
		540
187	case EIO_READDIR:	541	case EIO_READDIR:
188	{	542	{
189	SV *rv = &PL_sv_undef;	543	SV *rv = &PL_sv_undef;
190		544
191	if (req->result >= 0)	545	if (req->result >= 0)
192	{	546	{
193	int i;	547	int i;
194	char *buf = req->ptr2;	548	char *names = (char *)req->ptr2;
		549	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
195	AV *av = newAV ();	550	AV *av = newAV ();
196		551
197	av_extend (av, req->result - 1);	552	av_extend (av, req->result - 1);
198		553
199	for (i = 0; i < req->result; ++i)	554	for (i = 0; i < req->result; ++i)
200	{	555	{
201	SV *sv = newSVpv (buf, 0);	556	if (req->int1 & EIO_READDIR_DENTS)
		557	{
		558	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
202		559
		560	if (req->int1 & EIO_READDIR_CUSTOM2)
		561	{
		562	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		563	AV *avent = newAV ();
		564
		565	av_extend (avent, 2);
		566
		567	if (!sv_type [ent->type])
		568	{
		569	sv_type [ent->type] = newSViv (ent->type);
		570	SvREADONLY_on (sv_type [ent->type]);
		571	}
		572
		573	av_store (avent, 0, namesv);
		574	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		575	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		576
		577	av_store (av, i, newRV_noinc ((SV *)avent));
		578	}
		579	else
203	av_store (av, i, sv);	580	av_store (av, i, namesv);
		581
		582	++ent;
		583	}
		584	else
		585	{
		586	SV *name = newSVpv (names, 0);
		587	av_store (av, i, name);
204	buf += SvCUR (sv) + 1;	588	names += SvCUR (name) + 1;
		589	}
205	}	590	}
206		591
207	rv = sv_2mortal (newRV_noinc ((SV *)av));	592	rv = sv_2mortal (newRV_noinc ((SV *)av));
208	}	593	}
209		594
210	PUSHs (rv);	595	PUSHs (rv);
		596
		597	if (req->int1 & EIO_READDIR_CUSTOM1)
		598	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
211	}	599	}
212	break;	600	break;
213		601
214	case EIO_OPEN:	602	case EIO_OPEN:
		603	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		604	break;
		605
		606	case EIO_STATVFS:
		607	case EIO_FSTATVFS:
215	{	608	{
216	/* convert fd to fh */
217	SV *fh = &PL_sv_undef;	609	SV *rv = &PL_sv_undef;
218		610
		611	#ifndef _WIN32
219	if (req->result >= 0)	612	if (req->result >= 0)
220	{	613	{
		614	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
221	GV *gv = (GV *)sv_newmortal ();	615	HV *hv = newHV ();
222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	616	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
223	char sym [64];	617	* chooses to make it a struct.
224	int symlen;
225		618	*/
226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	619	unsigned long fsid = 0;
227	gv_init (gv, stash, sym, symlen, 0);	620	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
228		621
229	symlen = snprintf (	622	rv = sv_2mortal (newRV_noinc ((SV *)hv));
230	sym,
231	sizeof (sym),
232	"%s&=%d",
233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
234	req->result
235	);
236		623
237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	624	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
238	fh = (SV *)gv;	625	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		626	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		627	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		628	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		629	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		630	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		631	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		632	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		633	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		634	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
239	}	635	}
		636	#endif
240		637
241	PUSHs (fh);	638	PUSHs (rv);
242	}	639	}
		640
243	break;	641	break;
244		642
245	case EIO_GROUP:	643	case EIO_GROUP:
246	req->int1 = 2; /* mark group as finished */	644	req->int1 = 2; /* mark group as finished */
247		645
…		…
259	case EIO_NOP:	657	case EIO_NOP:
260	case EIO_BUSY:	658	case EIO_BUSY:
261	break;	659	break;
262		660
263	case EIO_READLINK:	661	case EIO_READLINK:
		662	case EIO_REALPATH:
264	if (req->result > 0)	663	if (req->result > 0)
265	{	664	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
266	SvCUR_set (req->sv2, req->result);
267	*SvEND (req->sv2) = 0;
268	PUSHs (req->sv2);
269	}
270	break;	665	break;
271		666
272	case EIO_STAT:	667	case EIO_STAT:
273	case EIO_LSTAT:	668	case EIO_LSTAT:
274	case EIO_FSTAT:	669	case EIO_FSTAT:
275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	670	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		671
276	PL_laststatval = req->result;	672	if (!(PL_laststatval = req->result))
		673	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	674	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
278	PUSHs (sv_2mortal (newSViv (req->result)));	675
		676	PUSHs (sv_result);
279	break;	677	break;
280		678
		679	case EIO_SEEK:
		680	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		681	break;
		682
281	case EIO_READ:	683	case EIO_READ:
		684	{
282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	685	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
283	*SvEND (req->sv2) = 0;	686	*SvEND (req->sv2) = 0;
284	PUSHs (sv_2mortal (newSViv (req->result)));	687	SvPOK_only (req->sv2);
		688	SvSETMAGIC (req->sv2);
		689	PUSHs (sv_result);
		690	}
285	break;	691	break;
286		692
287	case EIO_DUP2:	693	case EIO_SLURP:
		694	{
		695	if (req->result >= 0)
		696	{
		697	/* if length was originally not known, we steal the malloc'ed memory */
		698	if (req->flags & EIO_FLAG_PTR2_FREE)
		699	{
		700	req->flags &= ~EIO_FLAG_PTR2_FREE;
		701	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		702	}
		703	else
		704	{
		705	SvCUR_set (req->sv2, req->result);
		706	*SvEND (req->sv2) = 0;
		707	SvPOK_only (req->sv2);
		708	}
		709
		710	SvSETMAGIC (req->sv2);
		711	}
		712
		713	PUSHs (sv_result);
		714	}
		715	break;
		716
		717	case EIO_CUSTOM:
		718	if (req->feed == fiemap)
		719	{
		720	#if HAVE_FIEMAP
		721	if (!req->result)
		722	{
		723	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		724
		725	if (fiemap->fm_extent_count)
		726	{
		727	AV *av = newAV ();
		728	int i;
		729
		730	while (fiemap->fm_mapped_extents)
		731	{
		732	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		733	AV *ext_av = newAV ();
		734
		735	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		736	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		737	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		738	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		739
		740	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		741	}
		742
		743	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		744	}
		745	else
		746	{
		747	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		748	PUSHs (sv_result);
		749	}
		750	}
		751	#endif
		752	}
		753	else
		754	PUSHs (sv_result);
		755	break;
		756
		757	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
288	if (req->result > 0)	758	if (req->result > 0)
289	req->result = 0;	759	SvIV_set (sv_result, 0);
290	/* FALLTHROUGH */	760	/* FALLTHROUGH */
291		761
292	default:	762	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));	763	PUSHs (sv_result);
294	break;	764	break;
295	}	765	}
296		766
297	errno = req->errorno;	767	errno = req->errorno;
298		768
299	PUTBACK;	769	PUTBACK;
300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	770	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
301	SPAGAIN;	771	SPAGAIN;
302		772
		773	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		774	SvREFCNT_dec (sv_result);
		775	else
		776	sv_result_cache = sv_result;
		777
303	FREETMPS;	778	FREETMPS;
304	LEAVE;	779	LEAVE;
305		780
306	PUTBACK;	781	PUTBACK;
307	}	782	}
308		783
309	return !!SvTRUE (ERRSV);	784	return !!SvTRUE (ERRSV);
310	}	785	}
311		786
		787	static void
312	static void req_destroy (aio_req req)	788	req_destroy (aio_req req)
313	{	789	{
314	if (req->self)	790	if (req->self)
315	{	791	{
316	sv_unmagic (req->self, PERL_MAGIC_ext);	792	sv_unmagic (req->self, PERL_MAGIC_ext);
317	SvREFCNT_dec (req->self);	793	SvREFCNT_dec (req->self);
318	}	794	}
319		795
320	SvREFCNT_dec (req->sv1);	796	SvREFCNT_dec (req->sv1);
321	SvREFCNT_dec (req->sv2);	797	SvREFCNT_dec (req->sv2);
		798	SvREFCNT_dec (req->sv3);
		799	SvREFCNT_dec (req->sv4);
322	SvREFCNT_dec (req->callback);	800	SvREFCNT_dec (req->callback);
323		801
324	Safefree (req);	802	free (req);
325	}	803	}
326		804
		805	static void
327	static void req_cancel_subs (aio_req grp)	806	req_cancel_subs (aio_req grp)
328	{	807	{
329	aio_req sub;
330
331	if (grp->type != EIO_GROUP)	808	if (grp->type != EIO_GROUP)
332	return;	809	return;
333		810
334	SvREFCNT_dec (grp->sv2);	811	SvREFCNT_dec (grp->sv2);
335	grp->sv2 = 0;	812	grp->sv2 = 0;
336		813
337	eio_grp_cancel (grp);	814	eio_grp_cancel (grp);
338	}	815	}
339		816
340	#ifdef USE_SOCKETS_AS_HANDLES	817	static void ecb_cold
341	# define TO_SOCKET(x) (win32_get_osfhandle (x))	818	create_respipe (void)
342	#else	819	{
343	# define TO_SOCKET(x) (x)	820	if (s_epipe_renew (&respipe))
344	#endif	821	croak ("IO::AIO: unable to initialize result pipe");
		822	}
345		823
346	static void	824	static void
347	create_respipe (void)	825	poll_wait (void)
348	{	826	{
349	int old_readfd = respipe [0];
350
351	if (respipe [1] >= 0)
352	respipe_close (TO_SOCKET (respipe [1]));
353
354	#ifdef _WIN32
355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
356	#else
357	if (pipe (respipe))
358	#endif
359	croak ("unable to initialize result pipe");
360
361	if (old_readfd >= 0)
362	{
363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
364	croak ("unable to initialize result pipe(2)");
365
366	respipe_close (respipe [0]);
367	respipe [0] = old_readfd;
368	}
369
370	#ifdef _WIN32
371	int arg = 1;
372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
374	#else
375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
377	#endif
378	croak ("unable to initialize result pipe(3)");
379
380	respipe_osf [0] = TO_SOCKET (respipe [0]);
381	respipe_osf [1] = TO_SOCKET (respipe [1]);
382	}
383
384	static void poll_wait (void)
385	{
386	fd_set rfd;
387
388	while (eio_nreqs ())	827	while (eio_nreqs ())
389	{	828	{
390	int size;	829	int size;
391		830
392	X_LOCK (reslock);	831	X_LOCK (EIO_POOL->reslock);
393	size = res_queue.size;	832	size = EIO_POOL->res_queue.size;
394	X_UNLOCK (reslock);	833	X_UNLOCK (EIO_POOL->reslock);
395		834
396	if (size)	835	if (size)
397	return;	836	return;
398		837
399	maybe_start_thread ();	838	etp_maybe_start_thread (EIO_POOL);
400		839
401	FD_ZERO (&rfd);	840	s_epipe_wait (&respipe);
402	FD_SET (respipe [0], &rfd);
403
404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
405	}	841	}
406	}	842	}
407		843
408	static int poll_cb (void)	844	static int
		845	poll_cb (void)
409	{	846	{
410	int res;	847	for (;;)
411
412	do
413	{	848	{
414	res = eio_poll ();	849	int res = eio_poll ();
415		850
416	if (res > 0)	851	if (res > 0)
417	croak (0);	852	croak (0);
		853
		854	if (!max_outstanding || max_outstanding > eio_nreqs ())
		855	return res;
		856
		857	poll_wait ();
418	}	858	}
419	while (max_outstanding && max_outstanding <= eio_nreqs ());
420
421	return res;
422	}	859	}
423		860
424	static void atfork_child (void)	861	static void ecb_cold
		862	reinit (void)
425	{	863	{
426	create_respipe ();	864	create_respipe ();
		865
		866	if (eio_init (want_poll, done_poll) < 0)
		867	croak ("IO::AIO: unable to initialise eio library");
		868	}
		869
		870	/*****************************************************************************/
		871
		872	static SV *
		873	get_cb (SV *cb_sv)
		874	{
		875	SvGETMAGIC (cb_sv);
		876	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		877	}
		878
		879	static aio_req ecb_noinline
		880	dreq (SV *callback)
		881	{
		882	SV *cb_cv;
		883	aio_req req;
		884	int req_pri = next_pri;
		885	next_pri = EIO_PRI_DEFAULT;
		886
		887	cb_cv = get_cb (callback);
		888
		889	req = calloc (sizeof (*req), 1);
		890	if (!req)
		891	croak ("out of memory during eio_req allocation");
		892
		893	req->callback = SvREFCNT_inc (cb_cv);
		894	req->pri = req_pri;
		895
		896	return req;
427	}	897	}
428		898
429	#define dREQ \	899	#define dREQ \
430	aio_req req; \	900	aio_req req = dreq (callback); \
431	int req_pri = next_pri; \
432	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
433	\
434	if (SvOK (callback) && !SvROK (callback)) \
435	croak ("callback must be undef or of reference type"); \
436	\
437	Newz (0, req, 1, eio_req); \
438	if (!req) \
439	croak ("out of memory during eio_req allocation"); \
440	\
441	req->callback = newSVsv (callback); \
442	req->pri = req_pri
443		901
444	#define REQ_SEND \	902	#define REQ_SEND \
		903	PUTBACK; \
445	eio_submit (req); \	904	req_submit (req); \
		905	SPAGAIN; \
446	\	906	\
447	if (GIMME_V != G_VOID) \	907	if (GIMME_V != G_VOID) \
448	XPUSHs (req_sv (req, AIO_REQ_KLASS));	908	XPUSHs (req_sv (req, aio_req_stash));
449		909
		910	ecb_inline void
		911	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		912	{
		913	if (expect_false (SvROK (path)))
		914	{
		915	SV *rv = SvRV (path);
		916	SV *wdob;
		917
		918	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		919	{
		920	path = AvARRAY (rv)[1];
		921	wdob = AvARRAY (rv)[0];
		922
		923	if (SvOK (wdob))
		924	{
		925	*wd = SvAIO_WD (wdob);
		926	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		927	}
		928	else
		929	*wd = EIO_INVALID_WD;
		930	}
		931	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		932	{
		933	*wd = (aio_wd)(long)SvIVX (rv);
		934	*wdsv = SvREFCNT_inc_NN (rv);
		935	*ptr = ".";
		936	return; /* path set to "." */
		937	}
		938	else
		939	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		940	}
		941
		942	*pathsv = newSVsv (path);
		943	*ptr = SvPVbyte_nolen (*pathsv);
		944	}
		945
		946	static void ecb_noinline
		947	req_set_path1 (aio_req req, SV *path)
		948	{
		949	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		950	}
		951
		952	static void ecb_noinline
		953	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		954	{
		955	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		956
		957	switch (SvTYPE (rv))
		958	{
		959	case SVt_PVIO:
		960	case SVt_PVLV:
		961	case SVt_PVGV:
		962	req->type = type_fh;
		963	req->sv1 = newSVsv (fh_or_path);
		964	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		965	break;
		966
		967	default:
		968	req->type = type_path;
		969	req_set_path1 (req, fh_or_path);
		970	break;
		971	}
		972	}
		973
		974	XS(boot_IO__AIO) ecb_cold;
		975
450	MODULE = IO::AIO PACKAGE = IO::AIO	976	MODULE = IO::AIO PACKAGE = IO::AIO
451		977
452	PROTOTYPES: ENABLE	978	PROTOTYPES: ENABLE
453		979
454	BOOT:	980	BOOT:
455	{	981	{
		982	static const struct {
		983	const char *name;
		984	IV iv;
		985	} *civ, const_iv[] = {
		986	# define const_niv(name, value) { # name, (IV) value },
		987	# define const_iv(name) { # name, (IV) name },
		988	# define const_eio(name) { # name, (IV) EIO_ ## name },
		989
		990	/* you have to re-run ./gendef0 after adding/removing any constants here */
		991	/* the first block can be undef if missing */
		992	const_iv (ENOSYS)
		993	const_iv (EXDEV)
		994	const_iv (EBADR)
		995
		996	/* for lseek */
		997	const_iv (SEEK_DATA)
		998	const_iv (SEEK_HOLE)
		999
		1000	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1001	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1002	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1003	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1004	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1005	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1006
		1007	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1008	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1009	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1010	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1011	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1012
		1013	/* the second block will be 0 when missing */
		1014	const_iv (O_RDONLY)
		1015	const_iv (O_WRONLY)
		1016	const_iv (O_RDWR)
		1017	const_iv (O_CREAT)
		1018	const_iv (O_TRUNC)
		1019	const_iv (O_EXCL)
		1020	const_iv (O_APPEND)
		1021
		1022	const_iv (O_ASYNC)
		1023	const_iv (O_DIRECT)
		1024	const_iv (O_NOATIME)
		1025
		1026	const_iv (O_CLOEXEC)
		1027	const_iv (O_NOCTTY)
		1028	const_iv (O_NOFOLLOW)
		1029	const_iv (O_NONBLOCK)
		1030	const_iv (O_EXEC)
		1031	const_iv (O_SEARCH)
		1032	const_iv (O_DIRECTORY)
		1033	const_iv (O_DSYNC)
		1034	const_iv (O_RSYNC)
		1035	const_iv (O_SYNC)
		1036	const_iv (O_PATH)
		1037	const_iv (O_TMPFILE)
		1038	const_iv (O_TTY_INIT)
		1039
		1040	const_iv (S_IFIFO)
		1041	const_iv (S_IFCHR)
		1042	const_iv (S_IFBLK)
		1043	const_iv (S_IFLNK)
		1044	const_iv (S_IFREG)
		1045	const_iv (S_IFDIR)
		1046	const_iv (S_IFWHT)
		1047	const_iv (S_IFSOCK)
		1048	const_iv (S_IFMT)
		1049
		1050	const_iv (ST_RDONLY)
		1051	const_iv (ST_NOSUID)
		1052	const_iv (ST_NODEV)
		1053	const_iv (ST_NOEXEC)
		1054	const_iv (ST_SYNCHRONOUS)
		1055	const_iv (ST_MANDLOCK)
		1056	const_iv (ST_WRITE)
		1057	const_iv (ST_APPEND)
		1058	const_iv (ST_IMMUTABLE)
		1059	const_iv (ST_NOATIME)
		1060	const_iv (ST_NODIRATIME)
		1061	const_iv (ST_RELATIME)
		1062
		1063	const_iv (PROT_NONE)
		1064	const_iv (PROT_EXEC)
		1065	const_iv (PROT_READ)
		1066	const_iv (PROT_WRITE)
		1067
		1068	const_iv (MAP_PRIVATE)
		1069	const_iv (MAP_SHARED)
		1070	const_iv (MAP_FIXED)
		1071	const_iv (MAP_ANONYMOUS)
		1072
		1073	/* linuxish */
		1074	const_iv (MAP_LOCKED)
		1075	const_iv (MAP_NORESERVE)
		1076	const_iv (MAP_POPULATE)
		1077	const_iv (MAP_NONBLOCK)
		1078	const_iv (MAP_GROWSDOWN)
		1079	const_iv (MAP_32BIT)
		1080	const_iv (MAP_HUGETLB)
		1081	const_iv (MAP_STACK)
		1082
		1083	const_iv (F_DUPFD_CLOEXEC)
		1084
		1085	const_iv (F_OFD_GETLK)
		1086	const_iv (F_OFD_SETLK)
		1087	const_iv (F_OFD_GETLKW)
		1088
		1089	const_iv (FIFREEZE)
		1090	const_iv (FITHAW)
		1091	const_iv (FITRIM)
		1092	const_iv (FICLONE)
		1093	const_iv (FICLONERANGE)
		1094	const_iv (FIDEDUPERANGE)
		1095
		1096	const_iv (FS_IOC_GETFLAGS)
		1097	const_iv (FS_IOC_SETFLAGS)
		1098	const_iv (FS_IOC_GETVERSION)
		1099	const_iv (FS_IOC_SETVERSION)
		1100	const_iv (FS_IOC_FIEMAP)
		1101	const_iv (FS_IOC_FSGETXATTR)
		1102	const_iv (FS_IOC_FSSETXATTR)
		1103	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1104	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1105	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1106
		1107	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1108
		1109	const_iv (FS_SECRM_FL)
		1110	const_iv (FS_UNRM_FL)
		1111	const_iv (FS_COMPR_FL)
		1112	const_iv (FS_SYNC_FL)
		1113	const_iv (FS_IMMUTABLE_FL)
		1114	const_iv (FS_APPEND_FL)
		1115	const_iv (FS_NODUMP_FL)
		1116	const_iv (FS_NOATIME_FL)
		1117	const_iv (FS_DIRTY_FL)
		1118	const_iv (FS_COMPRBLK_FL)
		1119	const_iv (FS_NOCOMP_FL)
		1120	const_iv (FS_ENCRYPT_FL)
		1121	const_iv (FS_BTREE_FL)
		1122	const_iv (FS_INDEX_FL)
		1123	const_iv (FS_JOURNAL_DATA_FL)
		1124	const_iv (FS_NOTAIL_FL)
		1125	const_iv (FS_DIRSYNC_FL)
		1126	const_iv (FS_TOPDIR_FL)
		1127	const_iv (FS_FL_USER_MODIFIABLE)
		1128
		1129	const_iv (FS_XFLAG_REALTIME)
		1130	const_iv (FS_XFLAG_PREALLOC)
		1131	const_iv (FS_XFLAG_IMMUTABLE)
		1132	const_iv (FS_XFLAG_APPEND)
		1133	const_iv (FS_XFLAG_SYNC)
		1134	const_iv (FS_XFLAG_NOATIME)
		1135	const_iv (FS_XFLAG_NODUMP)
		1136	const_iv (FS_XFLAG_RTINHERIT)
		1137	const_iv (FS_XFLAG_PROJINHERIT)
		1138	const_iv (FS_XFLAG_NOSYMLINKS)
		1139	const_iv (FS_XFLAG_EXTSIZE)
		1140	const_iv (FS_XFLAG_EXTSZINHERIT)
		1141	const_iv (FS_XFLAG_NODEFRAG)
		1142	const_iv (FS_XFLAG_FILESTREAM)
		1143	const_iv (FS_XFLAG_DAX)
		1144	const_iv (FS_XFLAG_HASATTR)
		1145
		1146	const_iv (FIEMAP_FLAG_SYNC)
		1147	const_iv (FIEMAP_FLAG_XATTR)
		1148	const_iv (FIEMAP_FLAGS_COMPAT)
		1149	const_iv (FIEMAP_EXTENT_LAST)
		1150	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1151	const_iv (FIEMAP_EXTENT_DELALLOC)
		1152	const_iv (FIEMAP_EXTENT_ENCODED)
		1153	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1154	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1155	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1156	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1157	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1158	const_iv (FIEMAP_EXTENT_MERGED)
		1159	const_iv (FIEMAP_EXTENT_SHARED)
		1160
		1161	const_iv (SPLICE_F_MOVE)
		1162	const_iv (SPLICE_F_NONBLOCK)
		1163	const_iv (SPLICE_F_MORE)
		1164	const_iv (SPLICE_F_GIFT)
		1165
		1166	/* these are libeio constants, and are independent of gendef0 */
		1167	const_eio (SEEK_SET)
		1168	const_eio (SEEK_CUR)
		1169	const_eio (SEEK_END)
		1170
		1171	const_eio (MCL_FUTURE)
		1172	const_eio (MCL_CURRENT)
		1173
		1174	const_eio (MS_ASYNC)
		1175	const_eio (MS_INVALIDATE)
		1176	const_eio (MS_SYNC)
		1177
		1178	const_eio (MT_MODIFY)
		1179
		1180	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1181	const_eio (SYNC_FILE_RANGE_WRITE)
		1182	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1183
		1184	const_eio (FALLOC_FL_KEEP_SIZE)
		1185	const_eio (FALLOC_FL_PUNCH_HOLE)
		1186	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1187	const_eio (FALLOC_FL_ZERO_RANGE)
		1188	const_eio (FALLOC_FL_INSERT_RANGE)
		1189	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1190
		1191	const_eio (RENAME_NOREPLACE)
		1192	const_eio (RENAME_EXCHANGE)
		1193	const_eio (RENAME_WHITEOUT)
		1194
		1195	const_eio (READDIR_DENTS)
		1196	const_eio (READDIR_DIRS_FIRST)
		1197	const_eio (READDIR_STAT_ORDER)
		1198	const_eio (READDIR_FOUND_UNKNOWN)
		1199
		1200	const_eio (DT_UNKNOWN)
		1201	const_eio (DT_FIFO)
		1202	const_eio (DT_CHR)
		1203	const_eio (DT_DIR)
		1204	const_eio (DT_BLK)
		1205	const_eio (DT_REG)
		1206	const_eio (DT_LNK)
		1207	const_eio (DT_SOCK)
		1208	const_eio (DT_WHT)
		1209	};
		1210
456	stash = gv_stashpv ("IO::AIO", 1);	1211	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1212	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1213	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1214	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
457		1215
458	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1216	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
459	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1217	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
460	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
461	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
462	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
463	#ifdef _WIN32
464	X_MUTEX_CHECK (wrklock);
465	X_MUTEX_CHECK (reslock);
466	X_MUTEX_CHECK (reqlock);
467	X_MUTEX_CHECK (reqwait);
468	X_MUTEX_CHECK (preadwritelock);
469	X_MUTEX_CHECK (readdirlock);
470		1218
471	X_COND_CHECK (reqwait);	1219	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
472	#else
473	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
474	#endif
475		1220
476	create_respipe ();	1221	reinit ();
477
478	if (eio_init (want_poll, done_poll) < 0)
479	croak ("IO::AIO: unable to initialise eio library");
480
481	/* atfork child called in fifo order, so before eio's handler */
482	X_THREAD_ATFORK (0, 0, atfork_child);
483	}	1222	}
484		1223
485	void	1224	void
		1225	reinit ()
		1226	PROTOTYPE:
		1227
		1228	void
486	max_poll_reqs (int nreqs)	1229	max_poll_reqs (unsigned int nreqs)
487	PROTOTYPE: $	1230	PROTOTYPE: $
488	CODE:	1231	CODE:
489	eio_set_max_poll_reqs (nreqs);	1232	eio_set_max_poll_reqs (nreqs);
490		1233
491	void	1234	void
…		…
493	PROTOTYPE: $	1236	PROTOTYPE: $
494	CODE:	1237	CODE:
495	eio_set_max_poll_time (nseconds);	1238	eio_set_max_poll_time (nseconds);
496		1239
497	void	1240	void
498	min_parallel (int nthreads)	1241	min_parallel (unsigned int nthreads)
499	PROTOTYPE: $	1242	PROTOTYPE: $
500	CODE:	1243	CODE:
501	eio_set_min_parallel (nthreads);	1244	eio_set_min_parallel (nthreads);
502		1245
503	void	1246	void
504	max_parallel (int nthreads)	1247	max_parallel (unsigned int nthreads)
505	PROTOTYPE: $	1248	PROTOTYPE: $
506	CODE:	1249	CODE:
507	eio_set_max_parallel (nthreads);	1250	eio_set_max_parallel (nthreads);
508		1251
509	void	1252	void
510	max_idle (int nthreads)	1253	max_idle (unsigned int nthreads)
511	PROTOTYPE: $	1254	PROTOTYPE: $
512	CODE:	1255	CODE:
513	eio_set_max_idle (nthreads);	1256	eio_set_max_idle (nthreads);
514		1257
515	void	1258	void
		1259	idle_timeout (unsigned int seconds)
		1260	PROTOTYPE: $
		1261	CODE:
		1262	eio_set_idle_timeout (seconds);
		1263
		1264	void
516	max_outstanding (int maxreqs)	1265	max_outstanding (unsigned int maxreqs)
517	PROTOTYPE: $	1266	PROTOTYPE: $
518	CODE:	1267	CODE:
519	max_outstanding = maxreqs;	1268	max_outstanding = maxreqs;
520		1269
521	void	1270	void
522	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1271	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
523	PROTOTYPE: $$$;$
524	PPCODE:	1272	PPCODE:
525	{	1273	{
526	dREQ;	1274	dREQ;
527		1275
		1276	req->type = EIO_WD_OPEN;
		1277	req_set_path1 (req, pathname);
		1278
		1279	REQ_SEND;
		1280	}
		1281
		1282	void
		1283	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1284	PPCODE:
		1285	{
		1286	dREQ;
		1287
528	req->type = EIO_OPEN;	1288	req->type = EIO_OPEN;
529	req->sv1 = newSVsv (pathname);	1289	req_set_path1 (req, pathname);
530	req->ptr1 = SvPVbyte_nolen (req->sv1);
531	req->int1 = flags;	1290	req->int1 = flags;
532	req->int2 = mode;	1291	req->int2 = mode;
533		1292
534	REQ_SEND;	1293	REQ_SEND;
535	}	1294	}
536		1295
537	void	1296	void
538	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1297	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
539	PROTOTYPE: $;$
540	ALIAS:	1298	ALIAS:
541	aio_fsync = EIO_FSYNC	1299	aio_fsync = EIO_FSYNC
542	aio_fdatasync = EIO_FDATASYNC	1300	aio_fdatasync = EIO_FDATASYNC
		1301	aio_syncfs = EIO_SYNCFS
543	PPCODE:	1302	PPCODE:
544	{	1303	{
		1304	int fd = s_fileno_croak (fh, 0);
545	dREQ;	1305	dREQ;
546		1306
547	req->type = ix;	1307	req->type = ix;
548	req->sv1 = newSVsv (fh);	1308	req->sv1 = newSVsv (fh);
549	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1309	req->int1 = fd;
550		1310
551	REQ_SEND (req);	1311	REQ_SEND;
552	}	1312	}
553		1313
554	void	1314	void
555	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1315	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
556	PROTOTYPE: $;$
557	PPCODE:	1316	PPCODE:
558	{	1317	{
559	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1318	int fd = s_fileno_croak (fh, 0);
560	dREQ;	1319	dREQ;
561		1320
562	if (close_pipe < 0)	1321	req->type = EIO_SYNC_FILE_RANGE;
		1322	req->sv1 = newSVsv (fh);
		1323	req->int1 = fd;
		1324	req->offs = offset;
		1325	req->size = nbytes;
		1326	req->int2 = flags;
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	int fd = s_fileno_croak (fh, 0);
		1336	dREQ;
		1337
		1338	req->type = EIO_FALLOCATE;
		1339	req->sv1 = newSVsv (fh);
		1340	req->int1 = fd;
		1341	req->int2 = mode;
		1342	req->offs = offset;
		1343	req->size = len;
		1344
		1345	REQ_SEND;
		1346	}
		1347
		1348	void
		1349	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1350	PPCODE:
		1351	{
		1352	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1353	int fd = s_fileno_croak (fh, 0);
		1354	dREQ;
		1355
		1356	if (expect_false (close_fd < 0))
563	{	1357	{
564	int pipefd [2];	1358	int pipefd [2];
565		1359
		1360	if (
		1361	#ifdef _WIN32
		1362	_pipe (pipefd, 1, _O_BINARY) < 0
		1363	#else
566	if (pipe (pipefd) < 0	1364	pipe (pipefd) < 0
567	|| close (pipefd [1]) < 0
568	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1365	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1366	#endif
		1367	|| close (pipefd [1]) < 0
		1368	)
569	abort (); /*D*/	1369	abort (); /*D*/
570		1370
571	close_pipe = pipefd [0];	1371	close_fd = pipefd [0];
572	}	1372	}
573		1373
574	req->type = EIO_DUP2;	1374	req->type = EIO_DUP2;
575	req->int1 = close_pipe;	1375	req->int1 = close_fd;
576	req->sv2 = newSVsv (fh);	1376	req->sv2 = newSVsv (fh);
577	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1377	req->int2 = fd;
578		1378
579	REQ_SEND (req);	1379	REQ_SEND;
580	}	1380	}
581		1381
582	void	1382	void
		1383	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1384	PPCODE:
		1385	{
		1386	int fd = s_fileno_croak (fh, 0);
		1387	dREQ;
		1388
		1389	req->type = EIO_SEEK;
		1390	req->sv1 = newSVsv (fh);
		1391	req->int1 = fd;
		1392	req->offs = SvVAL64 (offset);
		1393	req->int2 = whence;
		1394
		1395	REQ_SEND;
		1396	}
		1397
		1398	void
583	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1399	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
584	ALIAS:	1400	ALIAS:
585	aio_read = EIO_READ	1401	aio_read = EIO_READ
586	aio_write = EIO_WRITE	1402	aio_write = EIO_WRITE
587	PROTOTYPE: $$$$$;$
588	PPCODE:	1403	PPCODE:
589	{	1404	{
590	STRLEN svlen;	1405	STRLEN svlen;
		1406	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
591	char *svptr = SvPVbyte (data, svlen);	1407	char *svptr = SvPVbyte (data, svlen);
592	UV len = SvUV (length);	1408	UV len = SvUV (length);
593
594	SvUPGRADE (data, SVt_PV);
595	SvPOK_on (data);
596		1409
597	if (dataoffset < 0)	1410	if (dataoffset < 0)
598	dataoffset += svlen;	1411	dataoffset += svlen;
599		1412
600	if (dataoffset < 0 || dataoffset > svlen)	1413	if (dataoffset < 0 || dataoffset > svlen)
…		…
606	if (!SvOK (length) || len + dataoffset > svlen)	1419	if (!SvOK (length) || len + dataoffset > svlen)
607	len = svlen - dataoffset;	1420	len = svlen - dataoffset;
608	}	1421	}
609	else	1422	else
610	{	1423	{
611	/* read: grow scalar as necessary */	1424	/* read: check type and grow scalar as necessary */
		1425	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
612	svptr = SvGROW (data, len + dataoffset + 1);	1426	svptr = sv_grow (data, len + dataoffset + 1);
		1427	else if (SvCUR (data) < len + dataoffset)
		1428	croak ("length + dataoffset outside of scalar, and cannot grow");
613	}	1429	}
614
615	if (len < 0)
616	croak ("length must not be negative");
617		1430
618	{	1431	{
619	dREQ;	1432	dREQ;
620		1433
621	req->type = ix;	1434	req->type = ix;
622	req->sv1 = newSVsv (fh);	1435	req->sv1 = newSVsv (fh);
623	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))	1436	req->int1 = fd;
624	: IoOFP (sv_2io (fh)));
625	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1437	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
626	req->size = len;	1438	req->size = len;
627	req->sv2 = SvREFCNT_inc (data);	1439	req->sv2 = SvREFCNT_inc (data);
628	req->ptr2 = (char *)svptr + dataoffset;	1440	req->ptr2 = (char *)svptr + dataoffset;
629	req->stroffset = dataoffset;	1441	req->stroffset = dataoffset;
…		…
637	REQ_SEND;	1449	REQ_SEND;
638	}	1450	}
639	}	1451	}
640		1452
641	void	1453	void
642	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1454	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
643	PROTOTYPE: $$;$	1455	ALIAS:
		1456	aio_ioctl = EIO_IOCTL
		1457	aio_fcntl = EIO_FCNTL
644	PPCODE:	1458	PPCODE:
645	{	1459	{
646	SV *data;	1460	int fd = s_fileno_croak (fh, 0);
		1461	char *svptr;
		1462
		1463	if (SvPOK (arg) || !SvNIOK (arg))
		1464	{
		1465	STRLEN svlen;
		1466	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1467	#ifdef IOCPARM_LEN
		1468	STRLEN need = IOCPARM_LEN (request);
		1469	#else
		1470	STRLEN need = 256;
		1471	#endif
		1472
		1473	if (svlen < need)
		1474	svptr = SvGROW (arg, need);
		1475	}
		1476	else
		1477	svptr = (char *)SvIV (arg);
		1478
		1479	{
		1480	dREQ;
		1481
		1482	req->type = ix;
		1483	req->sv1 = newSVsv (fh);
		1484	req->int1 = fd;
		1485	req->int2 = (long)request;
		1486	req->sv2 = SvREFCNT_inc (arg);
		1487	req->ptr2 = svptr;
		1488
		1489	REQ_SEND;
		1490	}
		1491	}
		1492
		1493	void
		1494	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1495	ALIAS:
		1496	aio_readlink = EIO_READLINK
		1497	aio_realpath = EIO_REALPATH
		1498	PPCODE:
		1499	{
647	dREQ;	1500	dREQ;
648		1501
649	data = newSV (NAME_MAX);
650	SvPOK_on (data);
651
652	req->type = EIO_READLINK;	1502	req->type = ix;
653	req->sv1 = newSVsv (path);	1503	req_set_path1 (req, pathname);
654	req->ptr1 = SvPVbyte_nolen (req->sv1);
655	req->sv2 = data;
656	req->ptr2 = SvPVbyte_nolen (data);
657		1504
658	REQ_SEND;	1505	REQ_SEND;
659	}	1506	}
660		1507
661	void	1508	void
662	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1509	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
663	PROTOTYPE: $$$$;$
664	PPCODE:	1510	PPCODE:
665	{	1511	{
		1512	int ifd = s_fileno_croak (in_fh , 0);
		1513	int ofd = s_fileno_croak (out_fh, 1);
666	dREQ;	1514	dREQ;
667		1515
668	req->type = EIO_SENDFILE;	1516	req->type = EIO_SENDFILE;
669	req->sv1 = newSVsv (out_fh);	1517	req->sv1 = newSVsv (out_fh);
670	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1518	req->int1 = ofd;
671	req->sv2 = newSVsv (in_fh);	1519	req->sv2 = newSVsv (in_fh);
672	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1520	req->int2 = ifd;
673	req->offs = SvVAL64 (in_offset);	1521	req->offs = in_offset;
674	req->size = length;	1522	req->size = length;
675		1523
676	REQ_SEND;	1524	REQ_SEND;
677	}	1525	}
678		1526
679	void	1527	void
680	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1528	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
681	PROTOTYPE: $$$;$
682	PPCODE:	1529	PPCODE:
683	{	1530	{
		1531	int fd = s_fileno_croak (fh, 0);
684	dREQ;	1532	dREQ;
685		1533
686	req->type = EIO_READAHEAD;	1534	req->type = EIO_READAHEAD;
687	req->sv1 = newSVsv (fh);	1535	req->sv1 = newSVsv (fh);
688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1536	req->int1 = fd;
689	req->offs = SvVAL64 (offset);	1537	req->offs = offset;
690	req->size = length;	1538	req->size = length;
691		1539
692	REQ_SEND;	1540	REQ_SEND;
693	}	1541	}
694		1542
695	void	1543	void
696	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1544	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
697	ALIAS:	1545	ALIAS:
698	aio_stat = EIO_STAT	1546	aio_stat = EIO_STAT
699	aio_lstat = EIO_LSTAT	1547	aio_lstat = EIO_LSTAT
		1548	aio_statvfs = EIO_STATVFS
700	PPCODE:	1549	PPCODE:
701	{	1550	{
702	dREQ;	1551	dREQ;
703		1552
704	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));	1553	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
705	if (!req->ptr2)
706	{
707	req_destroy (req);
708	croak ("out of memory during aio_stat statdata allocation");
709	}
710
711	req->flags |= EIO_FLAG_PTR2_FREE;
712	req->sv1 = newSVsv (fh_or_path);
713
714	if (SvPOK (fh_or_path))
715	{
716	req->type = ix;
717	req->ptr1 = SvPVbyte_nolen (req->sv1);
718	}
719	else
720	{
721	req->type = EIO_FSTAT;
722	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
723	}
724		1554
725	REQ_SEND;	1555	REQ_SEND;
726	}	1556	}
727		1557
		1558	UV
		1559	major (UV dev)
		1560	ALIAS:
		1561	minor = 1
		1562	CODE:
		1563	RETVAL = ix ? minor (dev) : major (dev);
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	UV
		1568	makedev (UV maj, UV min)
		1569	CODE:
		1570	RETVAL = makedev (maj, min);
		1571	OUTPUT:
		1572	RETVAL
		1573
728	void	1574	void
729	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1575	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
730	PPCODE:	1576	PPCODE:
731	{	1577	{
732	dREQ;	1578	dREQ;
733		1579
734	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1580	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
735	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1581	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
736	req->sv1 = newSVsv (fh_or_path);	1582	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
737
738	if (SvPOK (fh_or_path))
739	{
740	req->type = EIO_UTIME;
741	req->ptr1 = SvPVbyte_nolen (req->sv1);
742	}
743	else
744	{
745	req->type = EIO_FUTIME;
746	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
747	}
748		1583
749	REQ_SEND;	1584	REQ_SEND;
750	}	1585	}
751		1586
752	void	1587	void
753	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1588	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
754	PPCODE:	1589	PPCODE:
755	{	1590	{
756	dREQ;	1591	dREQ;
757		1592
758	req->sv1 = newSVsv (fh_or_path);
759	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1593	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
760		1594	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
761	if (SvPOK (fh_or_path))
762	{
763	req->type = EIO_TRUNCATE;
764	req->ptr1 = SvPVbyte_nolen (req->sv1);
765	}
766	else
767	{
768	req->type = EIO_FTRUNCATE;
769	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
770	}
771		1595
772	REQ_SEND;	1596	REQ_SEND;
773	}	1597	}
774		1598
775	void	1599	void
776	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1600	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
777	ALIAS:
778	aio_chmod = EIO_CHMOD
779	aio_fchmod = EIO_FCHMOD
780	aio_mkdir = EIO_MKDIR
781	PPCODE:	1601	PPCODE:
782	{	1602	{
783	dREQ;	1603	dREQ;
784		1604
785	req->type = ix;
786	req->int2 = mode;	1605	req->int2 = mode;
787	req->sv1 = newSVsv (fh_or_path);	1606	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
788
789	if (ix == EIO_FCHMOD)
790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
791	else
792	req->ptr1 = SvPVbyte_nolen (req->sv1);
793		1607
794	REQ_SEND;	1608	REQ_SEND;
795	}	1609	}
796		1610
797	void	1611	void
798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1612	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
799	PPCODE:	1613	PPCODE:
800	{	1614	{
801	dREQ;	1615	dREQ;
802		1616
803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1617	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1618	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
805	req->sv1 = newSVsv (fh_or_path);	1619	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
806
807	if (SvPOK (fh_or_path))
808	{
809	req->type = EIO_CHOWN;
810	req->ptr1 = SvPVbyte_nolen (req->sv1);
811	}
812	else
813	{
814	req->type = EIO_FCHOWN;
815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
816	}
817		1620
818	REQ_SEND;	1621	REQ_SEND;
819	}	1622	}
820		1623
821	void	1624	void
		1625	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	dREQ;
		1629
		1630	req->type = EIO_READDIR;
		1631	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1632
		1633	if (flags & EIO_READDIR_DENTS)
		1634	req->int1 |= EIO_READDIR_CUSTOM2;
		1635
		1636	req_set_path1 (req, pathname);
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
		1642	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1643	PPCODE:
		1644	{
		1645	dREQ;
		1646
		1647	req->type = EIO_MKDIR;
		1648	req->int2 = mode;
		1649	req_set_path1 (req, pathname);
		1650
		1651	REQ_SEND;
		1652	}
		1653
		1654	void
822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1655	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
823	ALIAS:	1656	ALIAS:
824	aio_unlink = EIO_UNLINK	1657	aio_unlink = EIO_UNLINK
825	aio_rmdir = EIO_RMDIR	1658	aio_rmdir = EIO_RMDIR
826	aio_readdir = EIO_READDIR	1659	aio_readdir = EIO_READDIR
827	PPCODE:	1660	PPCODE:
828	{	1661	{
829	dREQ;	1662	dREQ;
830		1663
831	req->type = ix;	1664	req->type = ix;
832	req->sv1 = newSVsv (pathname);	1665	req_set_path1 (req, pathname);
833	req->ptr1 = SvPVbyte_nolen (req->sv1);
834		1666
835	REQ_SEND;	1667	REQ_SEND;
836	}	1668	}
837		1669
838	void	1670	void
839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1671	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
840	ALIAS:	1672	ALIAS:
841	aio_link = EIO_LINK	1673	aio_link = EIO_LINK
842	aio_symlink = EIO_SYMLINK	1674	aio_symlink = EIO_SYMLINK
843	aio_rename = EIO_RENAME	1675	aio_rename = EIO_RENAME
844	PPCODE:	1676	PPCODE:
845	{	1677	{
		1678	eio_wd wd2 = 0;
846	dREQ;	1679	dREQ;
847		1680
848	req->type = ix;	1681	req->type = ix;
849	req->sv1 = newSVsv (oldpath);	1682	req_set_path1 (req, oldpath);
850	req->ptr1 = SvPVbyte_nolen (req->sv1);	1683	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
851	req->sv2 = newSVsv (newpath);	1684	req->int3 = (long)wd2;
852	req->ptr2 = SvPVbyte_nolen (req->sv2);
853		1685
854	REQ_SEND;	1686	REQ_SEND;
855	}	1687	}
856		1688
857	void	1689	void
		1690	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1691	PPCODE:
		1692	{
		1693	eio_wd wd2 = 0;
		1694	dREQ;
		1695
		1696	req->type = EIO_RENAME;
		1697	req_set_path1 (req, oldpath);
		1698	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1699	req->int2 = flags;
		1700	req->int3 = (long)wd2;
		1701
		1702	REQ_SEND;
		1703	}
		1704
		1705	void
858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1706	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
859	PPCODE:	1707	PPCODE:
860	{	1708	{
861	dREQ;	1709	dREQ;
862		1710
863	req->type = EIO_MKNOD;	1711	req->type = EIO_MKNOD;
864	req->sv1 = newSVsv (pathname);
865	req->ptr1 = SvPVbyte_nolen (req->sv1);
866	req->int2 = (mode_t)mode;	1712	req->int2 = (mode_t)mode;
867	req->offs = dev;	1713	req->offs = dev;
		1714	req_set_path1 (req, pathname);
868		1715
869	REQ_SEND;	1716	REQ_SEND;
870	}	1717	}
871		1718
872	void	1719	void
		1720	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1721	ALIAS:
		1722	aio_mtouch = EIO_MTOUCH
		1723	aio_msync = EIO_MSYNC
		1724	PPCODE:
		1725	{
		1726	STRLEN svlen;
		1727	char *svptr = SvPVbyte (data, svlen);
		1728	UV len = SvUV (length);
		1729
		1730	if (flags < 0)
		1731	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1732
		1733	if (offset < 0)
		1734	offset += svlen;
		1735
		1736	if (offset < 0 || offset > svlen)
		1737	croak ("offset outside of scalar");
		1738
		1739	if (!SvOK (length) || len + offset > svlen)
		1740	len = svlen - offset;
		1741
		1742	{
		1743	dREQ;
		1744
		1745	req->type = ix;
		1746	req->sv2 = SvREFCNT_inc (data);
		1747	req->ptr2 = (char *)svptr + offset;
		1748	req->size = len;
		1749	req->int1 = flags;
		1750
		1751	REQ_SEND;
		1752	}
		1753	}
		1754
		1755	void
		1756	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1757	PPCODE:
		1758	{
		1759	STRLEN svlen;
		1760	char *svptr = SvPVbyte (data, svlen);
		1761	UV len = SvUV (length);
		1762
		1763	if (offset < 0)
		1764	offset += svlen;
		1765
		1766	if (offset < 0 || offset > svlen)
		1767	croak ("offset outside of scalar");
		1768
		1769	if (!SvOK (length) || len + offset > svlen)
		1770	len = svlen - offset;
		1771
		1772	{
		1773	dREQ;
		1774
		1775	req->type = EIO_MLOCK;
		1776	req->sv2 = SvREFCNT_inc (data);
		1777	req->ptr2 = (char *)svptr + offset;
		1778	req->size = len;
		1779
		1780	REQ_SEND;
		1781	}
		1782	}
		1783
		1784	void
		1785	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1786	PPCODE:
		1787	{
		1788	dREQ;
		1789
		1790	req->type = EIO_MLOCKALL;
		1791	req->int1 = flags;
		1792
		1793	REQ_SEND;
		1794	}
		1795
		1796	void
		1797	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1798	PPCODE:
		1799	{
		1800	int fd = s_fileno_croak (fh, 0);
		1801	dREQ;
		1802
		1803	req->type = EIO_CUSTOM;
		1804	req->sv1 = newSVsv (fh);
		1805	req->int1 = fd;
		1806
		1807	req->feed = fiemap;
		1808	#if HAVE_FIEMAP
		1809	/* keep our fingers crossed that the next two types are 64 bit */
		1810	req->offs = start;
		1811	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1812	req->int2 = flags;
		1813	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1814	#endif
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
		1820	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1821	PPCODE:
		1822	{
		1823	char *svptr = 0;
		1824
		1825	sv_clear_foreign (data);
		1826
		1827	if (length) /* known length, directly read into scalar */
		1828	{
		1829	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1830	svptr = sv_grow (data, length + 1);
		1831	else if (SvCUR (data) < length)
		1832	croak ("length outside of scalar, and cannot grow");
		1833	else
		1834	svptr = SvPVbyte_nolen (data);
		1835	}
		1836
		1837	{
		1838	dREQ;
		1839
		1840	req->type = EIO_SLURP;
		1841	req_set_path1 (req, pathname);
		1842	req->offs = offset;
		1843	req->size = length;
		1844	req->sv2 = SvREFCNT_inc (data);
		1845	req->ptr2 = svptr;
		1846
		1847	if (!SvREADONLY (data))
		1848	{
		1849	SvREADONLY_on (data);
		1850	req->flags |= FLAG_SV2_RO_OFF;
		1851	}
		1852
		1853	REQ_SEND;
		1854	}
		1855	}
		1856
		1857	void
873	aio_busy (double delay, SV *callback=&PL_sv_undef)	1858	aio_busy (double delay, SV *callback = &PL_sv_undef)
874	PPCODE:	1859	PPCODE:
875	{	1860	{
876	dREQ;	1861	dREQ;
877		1862
878	req->type = EIO_BUSY;	1863	req->type = EIO_BUSY;
…		…
880		1865
881	REQ_SEND;	1866	REQ_SEND;
882	}	1867	}
883		1868
884	void	1869	void
885	aio_group (SV *callback=&PL_sv_undef)	1870	aio_group (SV *callback = &PL_sv_undef)
886	PROTOTYPE: ;$
887	PPCODE:	1871	PPCODE:
888	{	1872	{
889	dREQ;	1873	dREQ;
890		1874
891	req->type = EIO_GROUP;	1875	req->type = EIO_GROUP;
892		1876
		1877	PUTBACK;
893	eio_submit (req);	1878	req_submit (req);
		1879	SPAGAIN;
		1880
894	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1881	XPUSHs (req_sv (req, aio_grp_stash));
895	}	1882	}
896		1883
897	void	1884	void
898	aio_nop (SV *callback=&PL_sv_undef)	1885	aio_nop (SV *callback = &PL_sv_undef)
899	ALIAS:	1886	ALIAS:
900	aio_nop = EIO_NOP	1887	aio_nop = EIO_NOP
901	aio_sync = EIO_SYNC	1888	aio_sync = EIO_SYNC
902	PPCODE:	1889	PPCODE:
903	{	1890	{
…		…
907		1894
908	REQ_SEND;	1895	REQ_SEND;
909	}	1896	}
910		1897
911	int	1898	int
912	aioreq_pri (int pri = 0)	1899	aioreq_pri (int pri = NO_INIT)
913	PROTOTYPE: ;$
914	CODE:	1900	CODE:
915	RETVAL = next_pri - EIO_PRI_BIAS;	1901	RETVAL = next_pri;
916	if (items > 0)	1902	if (items > 0)
917	{	1903	{
918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;	1905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
920	next_pri = pri + EIO_PRI_BIAS;	1906	next_pri = pri;
921	}	1907	}
922	OUTPUT:	1908	OUTPUT:
923	RETVAL	1909	RETVAL
924		1910
925	void	1911	void
926	aioreq_nice (int nice = 0)	1912	aioreq_nice (int nice = 0)
927	CODE:	1913	CODE:
928	nice = next_pri - nice;	1914	nice = next_pri - nice;
929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;	1915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
931	next_pri = nice + EIO_PRI_BIAS;	1917	next_pri = nice;
932		1918
933	void	1919	void
934	flush ()	1920	flush ()
935	PROTOTYPE:
936	CODE:	1921	CODE:
937	while (eio_nreqs ())	1922	while (eio_nreqs ())
938	{	1923	{
939	poll_wait ();	1924	poll_wait ();
940	poll_cb ();	1925	poll_cb ();
941	}	1926	}
942		1927
943	int	1928	int
944	poll()	1929	poll ()
945	PROTOTYPE:
946	CODE:	1930	CODE:
947	poll_wait ();	1931	poll_wait ();
948	RETVAL = poll_cb ();	1932	RETVAL = poll_cb ();
949	OUTPUT:	1933	OUTPUT:
950	RETVAL	1934	RETVAL
951		1935
952	int	1936	int
953	poll_fileno()	1937	poll_fileno ()
954	PROTOTYPE:
955	CODE:	1938	CODE:
956	RETVAL = respipe [0];	1939	RETVAL = s_epipe_fd (&respipe);
957	OUTPUT:	1940	OUTPUT:
958	RETVAL	1941	RETVAL
959		1942
960	int	1943	int
961	poll_cb(...)	1944	poll_cb (...)
962	PROTOTYPE:	1945	PROTOTYPE:
963	CODE:	1946	CODE:
964	RETVAL = poll_cb ();	1947	RETVAL = poll_cb ();
965	OUTPUT:	1948	OUTPUT:
966	RETVAL	1949	RETVAL
967		1950
968	void	1951	void
969	poll_wait()	1952	poll_wait ()
970	PROTOTYPE:
971	CODE:	1953	CODE:
972	poll_wait ();	1954	poll_wait ();
973		1955
974	int	1956	int
975	nreqs()	1957	nreqs ()
976	PROTOTYPE:
977	CODE:	1958	CODE:
978	RETVAL = eio_nreqs ();	1959	RETVAL = eio_nreqs ();
979	OUTPUT:	1960	OUTPUT:
980	RETVAL	1961	RETVAL
981		1962
982	int	1963	int
983	nready()	1964	nready ()
984	PROTOTYPE:
985	CODE:	1965	CODE:
986	RETVAL = eio_nready ();	1966	RETVAL = eio_nready ();
987	OUTPUT:	1967	OUTPUT:
988	RETVAL	1968	RETVAL
989		1969
990	int	1970	int
991	npending()	1971	npending ()
992	PROTOTYPE:
993	CODE:	1972	CODE:
994	RETVAL = eio_npending ();	1973	RETVAL = eio_npending ();
995	OUTPUT:	1974	OUTPUT:
996	RETVAL	1975	RETVAL
997		1976
998	int	1977	int
999	nthreads()	1978	nthreads ()
1000	PROTOTYPE:
1001	CODE:	1979	CODE:
1002	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1980	RETVAL = eio_nthreads ();
1003	RETVAL = started;
1004	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1005	OUTPUT:	1981	OUTPUT:
1006	RETVAL	1982	RETVAL
1007		1983
		1984	int
		1985	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1986	CODE:
		1987	RETVAL = posix_fadvise (fh, offset, length, advice);
		1988	OUTPUT:
		1989	RETVAL
		1990
		1991	IV
		1992	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1993	CODE:
		1994	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1995	OUTPUT:
		1996	RETVAL
		1997
		1998	void
		1999	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2000	PPCODE:
		2001	sv_clear_foreign (scalar);
		2002	{
		2003	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2004	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2005	if (addr == (void *)-1)
		2006	XSRETURN_NO;
		2007
		2008	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2009
		2010	if (!(prot & PROT_WRITE))
		2011	SvREADONLY_on (scalar);
		2012
		2013	XSRETURN_YES;
		2014	}
		2015
		2016	void
		2017	munmap (SV *scalar)
		2018	CODE:
		2019	sv_clear_foreign (scalar);
		2020
		2021	int
		2022	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2023	ALIAS:
		2024	mprotect = 1
		2025	CODE:
		2026	{
		2027	STRLEN svlen;
		2028	void *addr = SvPVbyte (scalar, svlen);
		2029	STRLEN len = SvUV (length);
		2030
		2031	if (offset < 0)
		2032	offset += svlen;
		2033
		2034	if (offset < 0 || offset > svlen)
		2035	croak ("offset outside of scalar");
		2036
		2037	if (!SvOK (length) || len + offset > svlen)
		2038	len = svlen - offset;
		2039
		2040	addr = (void *)(((intptr_t)addr) + offset);
		2041	eio_page_align (&addr, &len);
		2042
		2043	switch (ix)
		2044	{
		2045	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2046	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2047	}
		2048	}
		2049	OUTPUT:
		2050	RETVAL
		2051
		2052	int
		2053	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2054	CODE:
		2055	{
		2056	STRLEN svlen;
		2057	void *addr = SvPVbyte (scalar, svlen);
		2058	size_t len = SvUV (length);
		2059
		2060	if (offset < 0)
		2061	offset += svlen;
		2062
		2063	if (offset < 0 || offset > svlen)
		2064	croak ("offset outside of scalar");
		2065
		2066	if (!SvOK (length) || len + offset > svlen)
		2067	len = svlen - offset;
		2068
		2069	addr = (void *)(((intptr_t)addr) + offset);
		2070	eio_page_align (&addr, &len);
		2071	#if _POSIX_MEMLOCK_RANGE
		2072	RETVAL = munlock (addr, len);
		2073	#else
		2074	RETVAL = EIO_ENOSYS ();
		2075	#endif
		2076	}
		2077	OUTPUT:
		2078	RETVAL
		2079
		2080	int
		2081	munlockall ()
		2082	CODE:
		2083	#if _POSIX_MEMLOCK
		2084	munlockall ();
		2085	#else
		2086	RETVAL = EIO_ENOSYS ();
		2087	#endif
		2088	OUTPUT:
		2089	RETVAL
		2090
		2091	int
		2092	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2093	CODE:
		2094	{
		2095	#if HAVE_LINUX_SPLICE
		2096	loff_t off_in_, off_out_;
		2097	RETVAL = splice (
		2098	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2099	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2100	length, flags
		2101	);
		2102	#else
		2103	RETVAL = EIO_ENOSYS ();
		2104	#endif
		2105	}
		2106	OUTPUT:
		2107	RETVAL
		2108
		2109	int
		2110	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2111	CODE:
		2112	#if HAVE_LINUX_SPLICE
		2113	RETVAL = tee (rfh, wfh, length, flags);
		2114	#else
		2115	RETVAL = EIO_ENOSYS ();
		2116	#endif
		2117	OUTPUT:
		2118	RETVAL
		2119
		2120	int
		2121	pipesize (aio_rfd rfh, int new_size = -1)
		2122	PROTOTYPE: $;$
		2123	CODE:
		2124	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2125	if (new_size >= 0)
		2126	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2127	else
		2128	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2129	#else
		2130	errno = ENOSYS;
		2131	RETVAL = -1;
		2132	#endif
		2133	OUTPUT:
		2134	RETVAL
		2135
		2136	void
		2137	pipe2 (int flags = 0)
		2138	PROTOTYPE: ;$
		2139	PPCODE:
		2140	{
		2141	int fd[2];
		2142	int res;
		2143
		2144	if (flags)
		2145	#if HAVE_PIPE2
		2146	res = pipe2 (fd, flags);
		2147	#else
		2148	res = (errno = ENOSYS, -1);
		2149	#endif
		2150	else
		2151	res = pipe (fd);
		2152
		2153	if (!res)
		2154	{
		2155	EXTEND (SP, 2);
		2156	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2157	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2158	}
		2159	}
		2160
		2161	UV
		2162	get_fdlimit ()
		2163	CODE:
		2164	#if HAVE_RLIMITS
		2165	struct rlimit rl;
		2166	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2167	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2168	#endif
		2169	XSRETURN_UNDEF;
		2170	OUTPUT:
		2171	RETVAL
		2172
		2173	void
		2174	min_fdlimit (UV limit = 0x7fffffffU)
		2175	CODE:
		2176	{
		2177	#if HAVE_RLIMITS
		2178	struct rlimit rl;
		2179	rlim_t orig_rlim_max;
		2180	UV bit;
		2181
		2182	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2183	goto fail;
		2184
		2185	if (rl.rlim_cur == RLIM_INFINITY)
		2186	XSRETURN_YES;
		2187
		2188	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2189
		2190	if (rl.rlim_cur < limit)
		2191	{
		2192	rl.rlim_cur = limit;
		2193
		2194	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2195	rl.rlim_max = rl.rlim_cur;
		2196	}
		2197
		2198	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2199	XSRETURN_YES;
		2200
		2201	if (errno == EPERM)
		2202	{
		2203	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2204	/* our limit overflows a system-wide limit */
		2205	/* try an adaptive algorithm, but do not lower the hardlimit */
		2206	rl.rlim_max = 0;
		2207	for (bit = 0x40000000U; bit; bit >>= 1)
		2208	{
		2209	rl.rlim_max |= bit;
		2210	rl.rlim_cur = rl.rlim_max;
		2211
		2212	/* nevr decrease the hard limit */
		2213	if (rl.rlim_max < orig_rlim_max)
		2214	break;
		2215
		2216	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2217	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2218	}
		2219
		2220	/* now, raise the soft limit to the max permitted */
		2221	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2222	{
		2223	rl.rlim_cur = rl.rlim_max;
		2224	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2225	errno = EPERM;
		2226	}
		2227	}
		2228	#endif
		2229	fail:
		2230	XSRETURN_UNDEF;
		2231	}
		2232
		2233	void _on_next_submit (SV *cb)
		2234	CODE:
		2235	SvREFCNT_dec (on_next_submit);
		2236	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2237
1008	PROTOTYPES: DISABLE	2238	PROTOTYPES: DISABLE
		2239
		2240	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2241
		2242	BOOT:
		2243	{
		2244	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2245	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2246	}
		2247
		2248	void
		2249	DESTROY (SV *self)
		2250	CODE:
		2251	{
		2252	aio_wd wd = SvAIO_WD (self);
		2253	#if HAVE_AT
		2254	{
		2255	SV *callback = &PL_sv_undef;
		2256	dREQ; /* clobbers next_pri :/ */
		2257	next_pri = req->pri; /* restore next_pri */
		2258	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2259	req->type = EIO_WD_CLOSE;
		2260	req->wd = wd;
		2261	REQ_SEND;
		2262	}
		2263	#else
		2264	eio_wd_close_sync (wd);
		2265	#endif
		2266	}
1009		2267
1010	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2268	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1011		2269
1012	void	2270	void
1013	cancel (aio_req_ornot req)	2271	cancel (aio_req_ornot req)
1014	CODE:	2272	CODE:
1015	eio_cancel (req);	2273	eio_cancel (req);
1016		2274
1017	void	2275	void
1018	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2276	cb (aio_req_ornot req, SV *callback = NO_INIT)
1019	CODE:	2277	PPCODE:
		2278	{
		2279	if (GIMME_V != G_VOID)
		2280	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2281
		2282	if (items > 1)
		2283	{
		2284	SV *cb_cv = get_cb (callback);
		2285
1020	SvREFCNT_dec (req->callback);	2286	SvREFCNT_dec (req->callback);
1021	req->callback = newSVsv (callback);	2287	req->callback = SvREFCNT_inc (cb_cv);
		2288	}
		2289	}
1022		2290
1023	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2291	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1024		2292
1025	void	2293	void
1026	add (aio_req grp, ...)	2294	add (aio_req grp, ...)
…		…
1058	AV *av;	2326	AV *av;
1059		2327
1060	grp->errorno = errno;	2328	grp->errorno = errno;
1061		2329
1062	av = newAV ();	2330	av = newAV ();
		2331	av_extend (av, items - 1);
1063		2332
1064	for (i = 1; i < items; ++i )	2333	for (i = 1; i < items; ++i )
1065	av_push (av, newSVsv (ST (i)));	2334	av_push (av, newSVsv (ST (i)));
1066		2335
1067	SvREFCNT_dec (grp->sv1);	2336	SvREFCNT_dec (grp->sv1);
…		…
1077	limit (aio_req grp, int limit)	2346	limit (aio_req grp, int limit)
1078	CODE:	2347	CODE:
1079	eio_grp_limit (grp, limit);	2348	eio_grp_limit (grp, limit);
1080		2349
1081	void	2350	void
1082	feed (aio_req grp, SV *callback=&PL_sv_undef)	2351	feed (aio_req grp, SV *callback = &PL_sv_undef)
1083	CODE:	2352	CODE:
1084	{	2353	{
1085	SvREFCNT_dec (grp->sv2);	2354	SvREFCNT_dec (grp->sv2);
1086	grp->sv2 = newSVsv (callback);	2355	grp->sv2 = newSVsv (callback);
		2356	grp->feed = aio_grp_feed;
1087		2357
1088	if (grp->int2 <= 0)	2358	if (grp->int2 <= 0)
1089	grp->int2 = 2;	2359	grp->int2 = 2;
1090		2360
1091	eio_grp_limit (grp, grp->int2);	2361	eio_grp_limit (grp, grp->int2);

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