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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.145 by root, Fri Jun 12 16:55:17 2009 UTC vs.
Revision 1.251 by root, Sat Jan 6 01:04:42 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
18	/* perl namespace pollution */	38	/* perl namespace pollution */
19	#undef VERSION	39	#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		40
70	/* perl stupidly overrides readdir and maybe others */	41	/* perl stupidly overrides readdir and maybe others */
71	/* with thread-unsafe versions, imagine that :( */	42	/* with thread-unsafe versions, imagine that :( */
72	#undef readdir	43	#undef readdir
73	#undef opendir	44	#undef opendir
74	#undef closedir	45	#undef closedir
75		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
76	#define EIO_STRUCT_STAT Stat_t	82	#define EIO_STRUCT_STATI64
77		83
78	/* use NV for 32 bit perls as it allows larger offsets */
79	#if IVSIZE >= 8
80	# define SvVAL64 SvIV
81	#else	84	#else
82	# define SvVAL64 SvNV	85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
83	#endif	94	#endif
84		95
85	/*****************************************************************************/	96	/*****************************************************************************/
86		97
87	#if __GNUC__ >= 3	98	#if __GNUC__ >= 3
…		…
93	#define expect_false(expr) expect ((expr) != 0, 0)	104	#define expect_false(expr) expect ((expr) != 0, 0)
94	#define expect_true(expr) expect ((expr) != 0, 1)	105	#define expect_true(expr) expect ((expr) != 0, 1)
95		106
96	/*****************************************************************************/	107	/*****************************************************************************/
97		108
98	static HV *stash;	109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
99	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 */
100		119
101	#define AIO_REQ_KLASS "IO::AIO::REQ"	120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
102	#define AIO_GRP_KLASS "IO::AIO::GRP"
103		121
104	#define EIO_REQ_MEMBERS \	122	#define EIO_REQ_MEMBERS \
105	SV *callback; \	123	SV *callback; \
106	SV *sv1, *sv2; \	124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
107	STRLEN stroffset; \	126	STRLEN stroffset; \
108	SV *self;	127	SV *self;
109		128
110	#define EIO_NO_WRAPPERS 1	129	#define EIO_NO_WRAPPERS 1
111		130
…		…
114	static int req_invoke (eio_req *req);	133	static int req_invoke (eio_req *req);
115	#define EIO_FINISH(req) req_invoke (req)	134	#define EIO_FINISH(req) req_invoke (req)
116	static void req_destroy (eio_req *grp);	135	static void req_destroy (eio_req *grp);
117	#define EIO_DESTROY(req) req_destroy (req)	136	#define EIO_DESTROY(req) req_destroy (req)
118		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	/*****************************************************************************/
		364
119	enum {	365	enum {
120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	366	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	367	};
122		368
123	#include "libeio/eio.c"
124
125	typedef eio_req *aio_req;	369	typedef eio_req *aio_req;
126	typedef eio_req *aio_req_ornot;	370	typedef eio_req *aio_req_ornot;
		371	typedef eio_wd aio_wd;
127		372
128	static SV *on_next_submit;	373	static SV *on_next_submit;
129	static int next_pri = EIO_PRI_DEFAULT;	374	static int next_pri = EIO_PRI_DEFAULT;
130	static int max_outstanding;	375	static int max_outstanding;
131		376
132	static int respipe_osf [2], respipe [2] = { -1, -1 };	377	static s_epipe respipe;
133		378
134	static void req_destroy (aio_req req);	379	static void req_destroy (aio_req req);
135	static void req_cancel (aio_req req);	380	static void req_cancel (aio_req req);
136		381
137	static void want_poll (void)	382	static void
		383	want_poll (void)
138	{	384	{
139	/* write a dummy byte to the pipe so fh becomes ready */	385	/* write a dummy byte to the pipe so fh becomes ready */
140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	386	s_epipe_signal (&respipe);
141	}	387	}
142		388
143	static void done_poll (void)	389	static void
		390	done_poll (void)
144	{	391	{
145	/* read any signals sent by the worker threads */	392	/* read any signals sent by the worker threads */
146	char buf [4];	393	s_epipe_drain (&respipe);
147	while (respipe_read (respipe [0], buf, 4) == 4)
148	;
149	}	394	}
150		395
151	/* must be called at most once */	396	/* must be called at most once */
152	static SV *req_sv (aio_req req, const char *klass)	397	static SV *
		398	req_sv (aio_req req, HV *stash)
153	{	399	{
154	if (!req->self)	400	if (!req->self)
155	{	401	{
156	req->self = (SV *)newHV ();	402	req->self = (SV *)newHV ();
157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	403	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
158	}	404	}
159		405
160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	406	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
161	}	407	}
162		408
163	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)
164	{	417	{
165	MAGIC *mg;	418	MAGIC *mg;
166		419
167	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")))
168	croak ("object of class " AIO_REQ_KLASS " expected");	425	croak ("object of class IO::AIO::REQ expected");
169		426
170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	427	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
171		428
172	return mg ? (aio_req)mg->mg_ptr : 0;	429	return mg ? (aio_req)mg->mg_ptr : 0;
173	}	430	}
174		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
175	static void aio_grp_feed (aio_req grp)	469	aio_grp_feed (aio_req grp)
176	{	470	{
177	if (grp->sv2 && SvOK (grp->sv2))	471	if (grp->sv2 && SvOK (grp->sv2))
178	{	472	{
179	dSP;	473	dSP;
180		474
181	ENTER;	475	ENTER;
182	SAVETMPS;	476	SAVETMPS;
183	PUSHMARK (SP);	477	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	478	XPUSHs (req_sv (grp, aio_grp_stash));
185	PUTBACK;	479	PUTBACK;
186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	480	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	481	SPAGAIN;
188	FREETMPS;	482	FREETMPS;
189	LEAVE;	483	LEAVE;
190	}	484	}
191	}	485	}
192		486
		487	static void
193	static void req_submit (eio_req *req)	488	req_submit (eio_req *req)
194	{	489	{
195	eio_submit (req);	490	eio_submit (req);
196		491
197	if (expect_false (on_next_submit))	492	if (expect_false (on_next_submit))
198	{	493	{
…		…
205	PUTBACK;	500	PUTBACK;
206	call_sv (cb, G_DISCARD | G_EVAL);	501	call_sv (cb, G_DISCARD | G_EVAL);
207	}	502	}
208	}	503	}
209		504
		505	static int
210	static int req_invoke (eio_req *req)	506	req_invoke (eio_req *req)
211	{	507	{
212	dSP;
213
214	if (req->flags & FLAG_SV2_RO_OFF)	508	if (req->flags & FLAG_SV2_RO_OFF)
215	SvREADONLY_off (req->sv2);	509	SvREADONLY_off (req->sv2);
216		510
217	if (!EIO_CANCELLED (req) && req->callback)	511	if (!EIO_CANCELLED (req) && req->callback)
218	{	512	{
		513	dSP;
		514	static SV *sv_result_cache; /* caches the result integer SV */
		515	SV *sv_result;
		516
219	ENTER;	517	ENTER;
220	SAVETMPS;	518	SAVETMPS;
221	PUSHMARK (SP);	519	PUSHMARK (SP);
222	EXTEND (SP, 1);	520	EXTEND (SP, 1);
223		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
224	switch (req->type)	535	switch (req->type)
225	{	536	{
		537	case EIO_WD_OPEN:
		538	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		539	break;
		540
226	case EIO_READDIR:	541	case EIO_READDIR:
227	{	542	{
228	SV *rv = &PL_sv_undef;	543	SV *rv = &PL_sv_undef;
229		544
230	if (req->result >= 0)	545	if (req->result >= 0)
231	{	546	{
232	int i;	547	int i;
233	char *buf = req->ptr2;	548	char *names = (char *)req->ptr2;
		549	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
234	AV *av = newAV ();	550	AV *av = newAV ();
235		551
236	av_extend (av, req->result - 1);	552	av_extend (av, req->result - 1);
237		553
238	for (i = 0; i < req->result; ++i)	554	for (i = 0; i < req->result; ++i)
239	{	555	{
240	if (req->int1 & EIO_READDIR_DENTS)	556	if (req->int1 & EIO_READDIR_DENTS)
241	{	557	{
242	eio_dirent *ent = (eio_dirent *)buf;
243	SV *namesv = newSVpvn (ent->name, ent->namelen);	558	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
244		559
245	if (req->int1 & EIO_READDIR_CUSTOM2)	560	if (req->int1 & EIO_READDIR_CUSTOM2)
246	{	561	{
247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */	562	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
248	AV *avent = newAV ();	563	AV *avent = newAV ();
…		…
262	av_store (av, i, newRV_noinc ((SV *)avent));	577	av_store (av, i, newRV_noinc ((SV *)avent));
263	}	578	}
264	else	579	else
265	av_store (av, i, namesv);	580	av_store (av, i, namesv);
266		581
267	buf += sizeof (eio_dirent);	582	++ent;
268	}	583	}
269	else	584	else
270	{	585	{
271	SV *name = newSVpv (buf, 0);	586	SV *name = newSVpv (names, 0);
272	av_store (av, i, name);	587	av_store (av, i, name);
273	buf += SvCUR (name) + 1;	588	names += SvCUR (name) + 1;
274	}	589	}
275	}	590	}
276		591
277	rv = sv_2mortal (newRV_noinc ((SV *)av));	592	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}	593	}
…		…
283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));	598	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
284	}	599	}
285	break;	600	break;
286		601
287	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:
288	{	608	{
289	/* convert fd to fh */
290	SV *fh = &PL_sv_undef;	609	SV *rv = &PL_sv_undef;
291		610
		611	#ifndef _WIN32
292	if (req->result >= 0)	612	if (req->result >= 0)
293	{	613	{
		614	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
294	GV *gv = (GV *)sv_newmortal ();	615	HV *hv = newHV ();
295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	616	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
296	char sym [64];	617	* chooses to make it a struct.
297	int symlen;
298		618	*/
299	symlen = snprintf (sym, sizeof (sym), "fd#%u", (unsigned int)req->result);	619	unsigned long fsid = 0;
300	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));
301		621
302	symlen = snprintf (	622	rv = sv_2mortal (newRV_noinc ((SV *)hv));
303	sym,
304	sizeof (sym),
305	"%s&=%u",
306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
307	(unsigned int)req->result
308	);
309		623
310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	624	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
311	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);
312	}	635	}
		636	#endif
313		637
314	PUSHs (fh);	638	PUSHs (rv);
315	}	639	}
		640
316	break;	641	break;
317		642
318	case EIO_GROUP:	643	case EIO_GROUP:
319	req->int1 = 2; /* mark group as finished */	644	req->int1 = 2; /* mark group as finished */
320		645
…		…
332	case EIO_NOP:	657	case EIO_NOP:
333	case EIO_BUSY:	658	case EIO_BUSY:
334	break;	659	break;
335		660
336	case EIO_READLINK:	661	case EIO_READLINK:
		662	case EIO_REALPATH:
337	if (req->result > 0)	663	if (req->result > 0)
338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	664	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
339	break;	665	break;
340		666
341	case EIO_STAT:	667	case EIO_STAT:
342	case EIO_LSTAT:	668	case EIO_LSTAT:
343	case EIO_FSTAT:	669	case EIO_FSTAT:
344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	670	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		671
345	PL_laststatval = req->result;	672	if (!(PL_laststatval = req->result))
		673	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	674	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
347	PUSHs (sv_2mortal (newSViv (req->result)));	675
		676	PUSHs (sv_result);
		677	break;
		678
		679	case EIO_SEEK:
		680	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
348	break;	681	break;
349		682
350	case EIO_READ:	683	case EIO_READ:
351	{	684	{
352	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));
353	*SvEND (req->sv2) = 0;	686	*SvEND (req->sv2) = 0;
354	SvPOK_only (req->sv2);	687	SvPOK_only (req->sv2);
355	SvSETMAGIC (req->sv2);	688	SvSETMAGIC (req->sv2);
356	PUSHs (sv_2mortal (newSViv (req->result)));	689	PUSHs (sv_result);
357	}	690	}
358	break;	691	break;
359		692
360	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	SvCUR_set (req->sv2, req->result);
		705	}
		706
		707	PUSHs (sv_result);
		708	}
		709	break;
		710
		711	case EIO_CUSTOM:
		712	if (req->feed == fiemap)
		713	{
		714	#if HAVE_FIEMAP
		715	if (!req->result)
		716	{
		717	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		718
		719	if (fiemap->fm_extent_count)
		720	{
		721	AV *av = newAV ();
		722	int i;
		723
		724	while (fiemap->fm_mapped_extents)
		725	{
		726	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		727	AV *ext_av = newAV ();
		728
		729	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		730	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		731	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		732	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		733
		734	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		735	}
		736
		737	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		738	}
		739	else
		740	{
		741	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		742	PUSHs (sv_result);
		743	}
		744	}
		745	#endif
		746	}
		747	else
		748	PUSHs (sv_result);
		749	break;
		750
		751	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
361	if (req->result > 0)	752	if (req->result > 0)
362	req->result = 0;	753	SvIV_set (sv_result, 0);
363	/* FALLTHROUGH */	754	/* FALLTHROUGH */
364		755
365	default:	756	default:
366	PUSHs (sv_2mortal (newSViv (req->result)));	757	PUSHs (sv_result);
367	break;	758	break;
368	}	759	}
369		760
370	errno = req->errorno;	761	errno = req->errorno;
371		762
372	PUTBACK;	763	PUTBACK;
373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	764	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
374	SPAGAIN;	765	SPAGAIN;
375		766
		767	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		768	SvREFCNT_dec (sv_result);
		769	else
		770	sv_result_cache = sv_result;
		771
376	FREETMPS;	772	FREETMPS;
377	LEAVE;	773	LEAVE;
378		774
379	PUTBACK;	775	PUTBACK;
380	}	776	}
381		777
382	return !!SvTRUE (ERRSV);	778	return !!SvTRUE (ERRSV);
383	}	779	}
384		780
		781	static void
385	static void req_destroy (aio_req req)	782	req_destroy (aio_req req)
386	{	783	{
387	if (req->self)	784	if (req->self)
388	{	785	{
389	sv_unmagic (req->self, PERL_MAGIC_ext);	786	sv_unmagic (req->self, PERL_MAGIC_ext);
390	SvREFCNT_dec (req->self);	787	SvREFCNT_dec (req->self);
391	}	788	}
392		789
393	SvREFCNT_dec (req->sv1);	790	SvREFCNT_dec (req->sv1);
394	SvREFCNT_dec (req->sv2);	791	SvREFCNT_dec (req->sv2);
		792	SvREFCNT_dec (req->sv3);
		793	SvREFCNT_dec (req->sv4);
395	SvREFCNT_dec (req->callback);	794	SvREFCNT_dec (req->callback);
396		795
397	Safefree (req);	796	free (req);
398	}	797	}
399		798
		799	static void
400	static void req_cancel_subs (aio_req grp)	800	req_cancel_subs (aio_req grp)
401	{	801	{
402	aio_req sub;
403
404	if (grp->type != EIO_GROUP)	802	if (grp->type != EIO_GROUP)
405	return;	803	return;
406		804
407	SvREFCNT_dec (grp->sv2);	805	SvREFCNT_dec (grp->sv2);
408	grp->sv2 = 0;	806	grp->sv2 = 0;
409		807
410	eio_grp_cancel (grp);	808	eio_grp_cancel (grp);
411	}	809	}
412		810
413	#ifdef USE_SOCKETS_AS_HANDLES	811	static void ecb_cold
414	# define TO_SOCKET(x) (win32_get_osfhandle (x))	812	create_respipe (void)
415	#else	813	{
416	# define TO_SOCKET(x) (x)	814	if (s_epipe_renew (&respipe))
417	#endif	815	croak ("IO::AIO: unable to initialize result pipe");
		816	}
418		817
419	static void	818	static void
420	create_respipe (void)	819	poll_wait (void)
421	{	820	{
422	int old_readfd = respipe [0];
423
424	if (respipe [1] >= 0)
425	respipe_close (TO_SOCKET (respipe [1]));
426
427	#ifdef _WIN32
428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
429	#else
430	if (pipe (respipe))
431	#endif
432	croak ("unable to initialize result pipe");
433
434	if (old_readfd >= 0)
435	{
436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
437	croak ("unable to initialize result pipe(2)");
438
439	respipe_close (respipe [0]);
440	respipe [0] = old_readfd;
441	}
442
443	#ifdef _WIN32
444	int arg = 1;
445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
447	#else
448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
450	#endif
451	croak ("unable to initialize result pipe(3)");
452
453	respipe_osf [0] = TO_SOCKET (respipe [0]);
454	respipe_osf [1] = TO_SOCKET (respipe [1]);
455	}
456
457	static void poll_wait (void)
458	{
459	fd_set rfd;
460
461	while (eio_nreqs ())	821	while (eio_nreqs ())
462	{	822	{
463	int size;	823	int size;
464		824
465	X_LOCK (reslock);	825	X_LOCK (EIO_POOL->reslock);
466	size = res_queue.size;	826	size = EIO_POOL->res_queue.size;
467	X_UNLOCK (reslock);	827	X_UNLOCK (EIO_POOL->reslock);
468		828
469	if (size)	829	if (size)
470	return;	830	return;
471		831
472	etp_maybe_start_thread ();	832	etp_maybe_start_thread (EIO_POOL);
473		833
474	FD_ZERO (&rfd);	834	s_epipe_wait (&respipe);
475	FD_SET (respipe [0], &rfd);
476
477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
478	}	835	}
479	}	836	}
480		837
481	static int poll_cb (void)	838	static int
		839	poll_cb (void)
482	{	840	{
483	for (;;)	841	for (;;)
484	{	842	{
485	int res = eio_poll ();	843	int res = eio_poll ();
486		844
…		…
492		850
493	poll_wait ();	851	poll_wait ();
494	}	852	}
495	}	853	}
496		854
497	static void atfork_child (void)	855	static void ecb_cold
		856	reinit (void)
498	{	857	{
499	create_respipe ();	858	create_respipe ();
		859
		860	if (eio_init (want_poll, done_poll) < 0)
		861	croak ("IO::AIO: unable to initialise eio library");
500	}	862	}
		863
		864	/*****************************************************************************/
501		865
502	static SV *	866	static SV *
503	get_cb (SV *cb_sv)	867	get_cb (SV *cb_sv)
504	{	868	{
505	HV *st;	869	SvGETMAGIC (cb_sv);
506	GV *gvp;	870	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		871	}
		872
		873	static aio_req ecb_noinline
		874	dreq (SV *callback)
		875	{
507	CV *cv;	876	SV *cb_cv;
		877	aio_req req;
		878	int req_pri = next_pri;
		879	next_pri = EIO_PRI_DEFAULT;
508		880
509	if (!SvOK (cb_sv))	881	cb_cv = get_cb (callback);
		882
		883	req = calloc (sizeof (*req), 1);
		884	if (!req)
		885	croak ("out of memory during eio_req allocation");
		886
		887	req->callback = SvREFCNT_inc (cb_cv);
		888	req->pri = req_pri;
		889
510	return 0;	890	return req;
511
512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
513
514	if (!cv)
515	croak ("IO::AIO callback must be undef or a CODE reference");
516
517	return (SV *)cv;
518	}	891	}
519		892
520	#define dREQ \	893	#define dREQ \
521	SV *cb_cv; \	894	aio_req req = dreq (callback); \
522	aio_req req; \
523	int req_pri = next_pri; \
524	next_pri = EIO_PRI_DEFAULT; \
525	\
526	cb_cv = get_cb (callback); \
527	\
528	Newz (0, req, 1, eio_req); \
529	if (!req) \
530	croak ("out of memory during eio_req allocation"); \
531	\
532	req->callback = SvREFCNT_inc (cb_cv); \
533	req->pri = req_pri
534		895
535	#define REQ_SEND \	896	#define REQ_SEND \
536	PUTBACK; \	897	PUTBACK; \
537	req_submit (req); \	898	req_submit (req); \
538	SPAGAIN; \	899	SPAGAIN; \
539	\	900	\
540	if (GIMME_V != G_VOID) \	901	if (GIMME_V != G_VOID) \
541	XPUSHs (req_sv (req, AIO_REQ_KLASS));	902	XPUSHs (req_sv (req, aio_req_stash));
542		903
543	static int	904	ecb_inline void
544	extract_fd (SV *fh, int wr)	905	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
545	{	906	{
546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));	907	if (expect_false (SvROK (path)))
		908	{
		909	SV *rv = SvRV (path);
		910	SV *wdob;
547		911
548	if (fd < 0)	912	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");	913	{
		914	path = AvARRAY (rv)[1];
		915	wdob = AvARRAY (rv)[0];
550		916
551	return fd;	917	if (SvOK (wdob))
		918	{
		919	*wd = SvAIO_WD (wdob);
		920	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		921	}
		922	else
		923	*wd = EIO_INVALID_WD;
		924	}
		925	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		926	{
		927	*wd = (aio_wd)(long)SvIVX (rv);
		928	*wdsv = SvREFCNT_inc_NN (rv);
		929	*ptr = ".";
		930	return; /* path set to "." */
		931	}
		932	else
		933	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		934	}
		935
		936	*pathsv = newSVsv (path);
		937	*ptr = SvPVbyte_nolen (*pathsv);
552	}	938	}
		939
		940	static void ecb_noinline
		941	req_set_path1 (aio_req req, SV *path)
		942	{
		943	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		944	}
		945
		946	static void ecb_noinline
		947	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		948	{
		949	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		950
		951	switch (SvTYPE (rv))
		952	{
		953	case SVt_PVIO:
		954	case SVt_PVLV:
		955	case SVt_PVGV:
		956	req->type = type_fh;
		957	req->sv1 = newSVsv (fh_or_path);
		958	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		959	break;
		960
		961	default:
		962	req->type = type_path;
		963	req_set_path1 (req, fh_or_path);
		964	break;
		965	}
		966	}
		967
		968	XS(boot_IO__AIO) ecb_cold;
553		969
554	MODULE = IO::AIO PACKAGE = IO::AIO	970	MODULE = IO::AIO PACKAGE = IO::AIO
555		971
556	PROTOTYPES: ENABLE	972	PROTOTYPES: ENABLE
557		973
558	BOOT:	974	BOOT:
559	{	975	{
560	HV *stash = gv_stashpv ("IO::AIO", 1);
561
562	static const struct {	976	static const struct {
563	const char *name;	977	const char *name;
564	IV iv;	978	IV iv;
565	} *civ, const_iv[] = {	979	} *civ, const_iv[] = {
566	# define const_iv(name, value) { # name, (IV) value },	980	# define const_niv(name, value) { # name, (IV) value },
		981	# define const_iv(name) { # name, (IV) name },
567	# define const_eio(name) { # name, (IV) EIO_ ## name },	982	# define const_eio(name) { # name, (IV) EIO_ ## name },
568	const_iv (EXDEV , EXDEV)	983
		984	/* you have to re-run ./gendef0 after adding/removing any constants here */
		985	/* the first block can be undef if missing */
569	const_iv (ENOSYS , ENOSYS)	986	const_iv (ENOSYS)
		987	const_iv (EXDEV)
		988	const_iv (EBADR)
		989
		990	/* for lseek */
		991	const_iv (SEEK_DATA)
		992	const_iv (SEEK_HOLE)
		993
		994	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		995	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		996	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		997	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		998	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		999	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1000
		1001	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1002	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1003	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1004	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1005	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1006
		1007	/* the second block will be 0 when missing */
570	const_iv (O_RDONLY, O_RDONLY)	1008	const_iv (O_RDONLY)
571	const_iv (O_WRONLY, O_WRONLY)	1009	const_iv (O_WRONLY)
		1010	const_iv (O_RDWR)
572	const_iv (O_CREAT , O_CREAT)	1011	const_iv (O_CREAT)
573	const_iv (O_TRUNC , O_TRUNC)	1012	const_iv (O_TRUNC)
574	#ifndef _WIN32	1013	const_iv (O_EXCL)
		1014	const_iv (O_APPEND)
		1015
		1016	const_iv (O_ASYNC)
		1017	const_iv (O_DIRECT)
		1018	const_iv (O_NOATIME)
		1019
		1020	const_iv (O_CLOEXEC)
		1021	const_iv (O_NOCTTY)
		1022	const_iv (O_NOFOLLOW)
		1023	const_iv (O_NONBLOCK)
		1024	const_iv (O_EXEC)
		1025	const_iv (O_SEARCH)
		1026	const_iv (O_DIRECTORY)
		1027	const_iv (O_DSYNC)
		1028	const_iv (O_RSYNC)
		1029	const_iv (O_SYNC)
		1030	const_iv (O_PATH)
		1031	const_iv (O_TMPFILE)
		1032	const_iv (O_TTY_INIT)
		1033
575	const_iv (S_IFIFO , S_IFIFO)	1034	const_iv (S_IFIFO)
576	#endif	1035	const_iv (S_IFCHR)
		1036	const_iv (S_IFBLK)
		1037	const_iv (S_IFLNK)
		1038	const_iv (S_IFREG)
		1039	const_iv (S_IFDIR)
		1040	const_iv (S_IFWHT)
		1041	const_iv (S_IFSOCK)
		1042	const_iv (S_IFMT)
		1043
		1044	const_iv (ST_RDONLY)
		1045	const_iv (ST_NOSUID)
		1046	const_iv (ST_NODEV)
		1047	const_iv (ST_NOEXEC)
		1048	const_iv (ST_SYNCHRONOUS)
		1049	const_iv (ST_MANDLOCK)
		1050	const_iv (ST_WRITE)
		1051	const_iv (ST_APPEND)
		1052	const_iv (ST_IMMUTABLE)
		1053	const_iv (ST_NOATIME)
		1054	const_iv (ST_NODIRATIME)
		1055	const_iv (ST_RELATIME)
		1056
		1057	const_iv (PROT_NONE)
		1058	const_iv (PROT_EXEC)
		1059	const_iv (PROT_READ)
		1060	const_iv (PROT_WRITE)
		1061
		1062	const_iv (MAP_PRIVATE)
		1063	const_iv (MAP_SHARED)
		1064	const_iv (MAP_FIXED)
		1065	const_iv (MAP_ANONYMOUS)
		1066
		1067	/* linuxish */
		1068	const_iv (MAP_LOCKED)
		1069	const_iv (MAP_NORESERVE)
		1070	const_iv (MAP_POPULATE)
		1071	const_iv (MAP_NONBLOCK)
		1072	const_iv (MAP_GROWSDOWN)
		1073	const_iv (MAP_32BIT)
		1074	const_iv (MAP_HUGETLB)
		1075	const_iv (MAP_STACK)
		1076
		1077	const_iv (F_DUPFD_CLOEXEC)
		1078
		1079	const_iv (F_OFD_GETLK)
		1080	const_iv (F_OFD_SETLK)
		1081	const_iv (F_OFD_GETLKW)
		1082
		1083	const_iv (FIFREEZE)
		1084	const_iv (FITHAW)
		1085	const_iv (FITRIM)
		1086	const_iv (FICLONE)
		1087	const_iv (FICLONERANGE)
		1088	const_iv (FIDEDUPERANGE)
		1089
		1090	const_iv (FS_IOC_GETFLAGS)
		1091	const_iv (FS_IOC_SETFLAGS)
		1092	const_iv (FS_IOC_GETVERSION)
		1093	const_iv (FS_IOC_SETVERSION)
		1094	const_iv (FS_IOC_FIEMAP)
		1095	const_iv (FS_IOC_FSGETXATTR)
		1096	const_iv (FS_IOC_FSSETXATTR)
		1097	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1098	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1099	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1100
		1101	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1102
		1103	const_iv (FS_SECRM_FL)
		1104	const_iv (FS_UNRM_FL)
		1105	const_iv (FS_COMPR_FL)
		1106	const_iv (FS_SYNC_FL)
		1107	const_iv (FS_IMMUTABLE_FL)
		1108	const_iv (FS_APPEND_FL)
		1109	const_iv (FS_NODUMP_FL)
		1110	const_iv (FS_NOATIME_FL)
		1111	const_iv (FS_DIRTY_FL)
		1112	const_iv (FS_COMPRBLK_FL)
		1113	const_iv (FS_NOCOMP_FL)
		1114	const_iv (FS_ENCRYPT_FL)
		1115	const_iv (FS_BTREE_FL)
		1116	const_iv (FS_INDEX_FL)
		1117	const_iv (FS_JOURNAL_DATA_FL)
		1118	const_iv (FS_NOTAIL_FL)
		1119	const_iv (FS_DIRSYNC_FL)
		1120	const_iv (FS_TOPDIR_FL)
		1121	const_iv (FS_FL_USER_MODIFIABLE)
		1122
		1123	const_iv (FS_XFLAG_REALTIME)
		1124	const_iv (FS_XFLAG_PREALLOC)
		1125	const_iv (FS_XFLAG_IMMUTABLE)
		1126	const_iv (FS_XFLAG_APPEND)
		1127	const_iv (FS_XFLAG_SYNC)
		1128	const_iv (FS_XFLAG_NOATIME)
		1129	const_iv (FS_XFLAG_NODUMP)
		1130	const_iv (FS_XFLAG_RTINHERIT)
		1131	const_iv (FS_XFLAG_PROJINHERIT)
		1132	const_iv (FS_XFLAG_NOSYMLINKS)
		1133	const_iv (FS_XFLAG_EXTSIZE)
		1134	const_iv (FS_XFLAG_EXTSZINHERIT)
		1135	const_iv (FS_XFLAG_NODEFRAG)
		1136	const_iv (FS_XFLAG_FILESTREAM)
		1137	const_iv (FS_XFLAG_DAX)
		1138	const_iv (FS_XFLAG_HASATTR)
		1139
		1140	const_iv (FIEMAP_FLAG_SYNC)
		1141	const_iv (FIEMAP_FLAG_XATTR)
		1142	const_iv (FIEMAP_FLAGS_COMPAT)
		1143	const_iv (FIEMAP_EXTENT_LAST)
		1144	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1145	const_iv (FIEMAP_EXTENT_DELALLOC)
		1146	const_iv (FIEMAP_EXTENT_ENCODED)
		1147	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1148	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1149	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1150	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1151	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1152	const_iv (FIEMAP_EXTENT_MERGED)
		1153	const_iv (FIEMAP_EXTENT_SHARED)
		1154
		1155	const_iv (SPLICE_F_MOVE)
		1156	const_iv (SPLICE_F_NONBLOCK)
		1157	const_iv (SPLICE_F_MORE)
		1158	const_iv (SPLICE_F_GIFT)
		1159
		1160	/* these are libeio constants, and are independent of gendef0 */
		1161	const_eio (SEEK_SET)
		1162	const_eio (SEEK_CUR)
		1163	const_eio (SEEK_END)
		1164
		1165	const_eio (MCL_FUTURE)
		1166	const_eio (MCL_CURRENT)
		1167
		1168	const_eio (MS_ASYNC)
		1169	const_eio (MS_INVALIDATE)
		1170	const_eio (MS_SYNC)
		1171
		1172	const_eio (MT_MODIFY)
		1173
577	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)	1174	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
578	const_eio (SYNC_FILE_RANGE_WRITE)	1175	const_eio (SYNC_FILE_RANGE_WRITE)
579	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)	1176	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1177
		1178	const_eio (FALLOC_FL_KEEP_SIZE)
		1179	const_eio (FALLOC_FL_PUNCH_HOLE)
		1180	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1181	const_eio (FALLOC_FL_ZERO_RANGE)
		1182	const_eio (FALLOC_FL_INSERT_RANGE)
		1183	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1184
		1185	const_eio (RENAME_NOREPLACE)
		1186	const_eio (RENAME_EXCHANGE)
		1187	const_eio (RENAME_WHITEOUT)
580		1188
581	const_eio (READDIR_DENTS)	1189	const_eio (READDIR_DENTS)
582	const_eio (READDIR_DIRS_FIRST)	1190	const_eio (READDIR_DIRS_FIRST)
583	const_eio (READDIR_STAT_ORDER)	1191	const_eio (READDIR_STAT_ORDER)
584	const_eio (READDIR_FOUND_UNKNOWN)	1192	const_eio (READDIR_FOUND_UNKNOWN)
…		…
592	const_eio (DT_LNK)	1200	const_eio (DT_LNK)
593	const_eio (DT_SOCK)	1201	const_eio (DT_SOCK)
594	const_eio (DT_WHT)	1202	const_eio (DT_WHT)
595	};	1203	};
596		1204
		1205	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1206	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1207	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1208	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1209
597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )	1210	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));	1211	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
599		1212
600	create_respipe ();	1213	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
601		1214
602	if (eio_init (want_poll, done_poll) < 0)	1215	reinit ();
603	croak ("IO::AIO: unable to initialise eio library");
604
605	/* atfork child called in fifo order, so before eio's handler */
606	X_THREAD_ATFORK (0, 0, atfork_child);
607	}	1216	}
608		1217
609	void	1218	void
		1219	reinit ()
		1220	PROTOTYPE:
		1221
		1222	void
610	max_poll_reqs (int nreqs)	1223	max_poll_reqs (unsigned int nreqs)
611	PROTOTYPE: $	1224	PROTOTYPE: $
612	CODE:	1225	CODE:
613	eio_set_max_poll_reqs (nreqs);	1226	eio_set_max_poll_reqs (nreqs);
614		1227
615	void	1228	void
…		…
617	PROTOTYPE: $	1230	PROTOTYPE: $
618	CODE:	1231	CODE:
619	eio_set_max_poll_time (nseconds);	1232	eio_set_max_poll_time (nseconds);
620		1233
621	void	1234	void
622	min_parallel (int nthreads)	1235	min_parallel (unsigned int nthreads)
623	PROTOTYPE: $	1236	PROTOTYPE: $
624	CODE:	1237	CODE:
625	eio_set_min_parallel (nthreads);	1238	eio_set_min_parallel (nthreads);
626		1239
627	void	1240	void
628	max_parallel (int nthreads)	1241	max_parallel (unsigned int nthreads)
629	PROTOTYPE: $	1242	PROTOTYPE: $
630	CODE:	1243	CODE:
631	eio_set_max_parallel (nthreads);	1244	eio_set_max_parallel (nthreads);
632		1245
633	void	1246	void
634	max_idle (int nthreads)	1247	max_idle (unsigned int nthreads)
635	PROTOTYPE: $	1248	PROTOTYPE: $
636	CODE:	1249	CODE:
637	eio_set_max_idle (nthreads);	1250	eio_set_max_idle (nthreads);
638		1251
639	void	1252	void
		1253	idle_timeout (unsigned int seconds)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	eio_set_idle_timeout (seconds);
		1257
		1258	void
640	max_outstanding (int maxreqs)	1259	max_outstanding (unsigned int maxreqs)
641	PROTOTYPE: $	1260	PROTOTYPE: $
642	CODE:	1261	CODE:
643	max_outstanding = maxreqs;	1262	max_outstanding = maxreqs;
644		1263
645	void	1264	void
646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1265	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
647	PROTOTYPE: $$$;$
648	PPCODE:	1266	PPCODE:
649	{	1267	{
650	dREQ;	1268	dREQ;
651		1269
		1270	req->type = EIO_WD_OPEN;
		1271	req_set_path1 (req, pathname);
		1272
		1273	REQ_SEND;
		1274	}
		1275
		1276	void
		1277	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1278	PPCODE:
		1279	{
		1280	dREQ;
		1281
652	req->type = EIO_OPEN;	1282	req->type = EIO_OPEN;
653	req->sv1 = newSVsv (pathname);	1283	req_set_path1 (req, pathname);
654	req->ptr1 = SvPVbyte_nolen (req->sv1);
655	req->int1 = flags;	1284	req->int1 = flags;
656	req->int2 = mode;	1285	req->int2 = mode;
657		1286
658	REQ_SEND;	1287	REQ_SEND;
659	}	1288	}
660		1289
661	void	1290	void
662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1291	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
663	PROTOTYPE: $;$
664	ALIAS:	1292	ALIAS:
665	aio_fsync = EIO_FSYNC	1293	aio_fsync = EIO_FSYNC
666	aio_fdatasync = EIO_FDATASYNC	1294	aio_fdatasync = EIO_FDATASYNC
		1295	aio_syncfs = EIO_SYNCFS
667	PPCODE:	1296	PPCODE:
668	{	1297	{
669	int fd = extract_fd (fh, 0);	1298	int fd = s_fileno_croak (fh, 0);
670	dREQ;	1299	dREQ;
671		1300
672	req->type = ix;	1301	req->type = ix;
673	req->sv1 = newSVsv (fh);	1302	req->sv1 = newSVsv (fh);
674	req->int1 = fd;	1303	req->int1 = fd;
675		1304
676	REQ_SEND (req);	1305	REQ_SEND;
677	}	1306	}
678		1307
679	void	1308	void
680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)	1309	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
681	PROTOTYPE: $$$$;$
682	PPCODE:	1310	PPCODE:
683	{	1311	{
684	int fd = extract_fd (fh, 0);	1312	int fd = s_fileno_croak (fh, 0);
685	dREQ;	1313	dREQ;
686		1314
687	req->type = EIO_SYNC_FILE_RANGE;	1315	req->type = EIO_SYNC_FILE_RANGE;
688	req->sv1 = newSVsv (fh);	1316	req->sv1 = newSVsv (fh);
689	req->int1 = fd;	1317	req->int1 = fd;
690	req->offs = SvVAL64 (offset);	1318	req->offs = offset;
691	req->size = SvVAL64 (nbytes);	1319	req->size = nbytes;
692	req->int2 = flags;	1320	req->int2 = flags;
693		1321
694	REQ_SEND (req);	1322	REQ_SEND;
695	}	1323	}
696		1324
697	void	1325	void
698	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1326	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
699	PROTOTYPE: $;$
700	PPCODE:	1327	PPCODE:
701	{	1328	{
702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1329	int fd = s_fileno_croak (fh, 0);
703	int fd = extract_fd (fh, 0);
704	dREQ;	1330	dREQ;
705		1331
706	if (close_pipe < 0)	1332	req->type = EIO_FALLOCATE;
		1333	req->sv1 = newSVsv (fh);
		1334	req->int1 = fd;
		1335	req->int2 = mode;
		1336	req->offs = offset;
		1337	req->size = len;
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1347	int fd = s_fileno_croak (fh, 0);
		1348	dREQ;
		1349
		1350	if (expect_false (close_fd < 0))
707	{	1351	{
708	int pipefd [2];	1352	int pipefd [2];
709		1353
		1354	if (
		1355	#ifdef _WIN32
		1356	_pipe (pipefd, 1, _O_BINARY) < 0
		1357	#else
710	if (pipe (pipefd) < 0	1358	pipe (pipefd) < 0
711	|| close (pipefd [1]) < 0
712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1359	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1360	#endif
		1361	|| close (pipefd [1]) < 0
		1362	)
713	abort (); /*D*/	1363	abort (); /*D*/
714		1364
715	close_pipe = pipefd [0];	1365	close_fd = pipefd [0];
716	}	1366	}
717		1367
718	req->type = EIO_DUP2;	1368	req->type = EIO_DUP2;
719	req->int1 = close_pipe;	1369	req->int1 = close_fd;
720	req->sv2 = newSVsv (fh);	1370	req->sv2 = newSVsv (fh);
721	req->int2 = fd;	1371	req->int2 = fd;
722		1372
723	REQ_SEND (req);	1373	REQ_SEND;
724	}	1374	}
725		1375
726	void	1376	void
		1377	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1378	PPCODE:
		1379	{
		1380	int fd = s_fileno_croak (fh, 0);
		1381	dREQ;
		1382
		1383	req->type = EIO_SEEK;
		1384	req->sv1 = newSVsv (fh);
		1385	req->int1 = fd;
		1386	req->offs = SvVAL64 (offset);
		1387	req->int2 = whence;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1393	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
728	ALIAS:	1394	ALIAS:
729	aio_read = EIO_READ	1395	aio_read = EIO_READ
730	aio_write = EIO_WRITE	1396	aio_write = EIO_WRITE
731	PROTOTYPE: $$$$$;$
732	PPCODE:	1397	PPCODE:
733	{	1398	{
734	STRLEN svlen;	1399	STRLEN svlen;
735	int fd = extract_fd (fh, ix == EIO_WRITE);	1400	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
736	char *svptr = SvPVbyte (data, svlen);	1401	char *svptr = SvPVbyte (data, svlen);
737	UV len = SvUV (length);	1402	UV len = SvUV (length);
738		1403
739	if (dataoffset < 0)	1404	if (dataoffset < 0)
740	dataoffset += svlen;	1405	dataoffset += svlen;
…		…
749	len = svlen - dataoffset;	1414	len = svlen - dataoffset;
750	}	1415	}
751	else	1416	else
752	{	1417	{
753	/* read: check type and grow scalar as necessary */	1418	/* read: check type and grow scalar as necessary */
754	SvUPGRADE (data, SVt_PV);	1419	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
755	svptr = SvGROW (data, len + dataoffset + 1);	1420	svptr = sv_grow (data, len + dataoffset);
		1421	else if (SvCUR (data) < len + dataoffset)
		1422	croak ("length + dataoffset outside of scalar, and cannot grow");
756	}	1423	}
757		1424
758	{	1425	{
759	dREQ;	1426	dREQ;
760		1427
…		…
776	REQ_SEND;	1443	REQ_SEND;
777	}	1444	}
778	}	1445	}
779		1446
780	void	1447	void
781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1448	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
782	PROTOTYPE: $$;$	1449	ALIAS:
		1450	aio_ioctl = EIO_IOCTL
		1451	aio_fcntl = EIO_FCNTL
783	PPCODE:	1452	PPCODE:
784	{	1453	{
785	SV *data;	1454	int fd = s_fileno_croak (fh, 0);
		1455	char *svptr;
		1456
		1457	if (SvPOK (arg) || !SvNIOK (arg))
		1458	{
		1459	STRLEN svlen;
		1460	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1461	#ifdef IOCPARM_LEN
		1462	STRLEN need = IOCPARM_LEN (request);
		1463	#else
		1464	STRLEN need = 256;
		1465	#endif
		1466
		1467	if (svlen < need)
		1468	svptr = SvGROW (arg, need);
		1469	}
		1470	else
		1471	svptr = (char *)SvIV (arg);
		1472
		1473	{
		1474	dREQ;
		1475
		1476	req->type = ix;
		1477	req->sv1 = newSVsv (fh);
		1478	req->int1 = fd;
		1479	req->int2 = (long)request;
		1480	req->sv2 = SvREFCNT_inc (arg);
		1481	req->ptr2 = svptr;
		1482
		1483	REQ_SEND;
		1484	}
		1485	}
		1486
		1487	void
		1488	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1489	ALIAS:
		1490	aio_readlink = EIO_READLINK
		1491	aio_realpath = EIO_REALPATH
		1492	PPCODE:
		1493	{
786	dREQ;	1494	dREQ;
787		1495
788	req->type = EIO_READLINK;	1496	req->type = ix;
789	req->sv1 = newSVsv (path);	1497	req_set_path1 (req, pathname);
790	req->ptr1 = SvPVbyte_nolen (req->sv1);
791		1498
792	REQ_SEND;	1499	REQ_SEND;
793	}	1500	}
794		1501
795	void	1502	void
796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1503	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
797	PROTOTYPE: $$$$;$
798	PPCODE:	1504	PPCODE:
799	{	1505	{
800	int ifd = extract_fd (in_fh , 0);	1506	int ifd = s_fileno_croak (in_fh , 0);
801	int ofd = extract_fd (out_fh, 0);	1507	int ofd = s_fileno_croak (out_fh, 1);
802	dREQ;	1508	dREQ;
803		1509
804	req->type = EIO_SENDFILE;	1510	req->type = EIO_SENDFILE;
805	req->sv1 = newSVsv (out_fh);	1511	req->sv1 = newSVsv (out_fh);
806	req->int1 = ofd;	1512	req->int1 = ofd;
807	req->sv2 = newSVsv (in_fh);	1513	req->sv2 = newSVsv (in_fh);
808	req->int2 = ifd;	1514	req->int2 = ifd;
809	req->offs = SvVAL64 (in_offset);	1515	req->offs = in_offset;
810	req->size = length;	1516	req->size = length;
811		1517
812	REQ_SEND;	1518	REQ_SEND;
813	}	1519	}
814		1520
815	void	1521	void
816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1522	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
817	PROTOTYPE: $$$;$
818	PPCODE:	1523	PPCODE:
819	{	1524	{
820	int fd = extract_fd (fh, 0);	1525	int fd = s_fileno_croak (fh, 0);
821	dREQ;	1526	dREQ;
822		1527
823	req->type = EIO_READAHEAD;	1528	req->type = EIO_READAHEAD;
824	req->sv1 = newSVsv (fh);	1529	req->sv1 = newSVsv (fh);
825	req->int1 = fd;	1530	req->int1 = fd;
826	req->offs = SvVAL64 (offset);	1531	req->offs = offset;
827	req->size = length;	1532	req->size = length;
828		1533
829	REQ_SEND;	1534	REQ_SEND;
830	}	1535	}
831		1536
832	void	1537	void
833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1538	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
834	ALIAS:	1539	ALIAS:
835	aio_stat = EIO_STAT	1540	aio_stat = EIO_STAT
836	aio_lstat = EIO_LSTAT	1541	aio_lstat = EIO_LSTAT
		1542	aio_statvfs = EIO_STATVFS
837	PPCODE:	1543	PPCODE:
838	{	1544	{
839	dREQ;	1545	dREQ;
840		1546
841	req->sv1 = newSVsv (fh_or_path);	1547	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
842
843	if (SvPOK (req->sv1))
844	{
845	req->type = ix;
846	req->ptr1 = SvPVbyte_nolen (req->sv1);
847	}
848	else
849	{
850	req->type = EIO_FSTAT;
851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852	}
853		1548
854	REQ_SEND;	1549	REQ_SEND;
855	}	1550	}
856		1551
		1552	UV
		1553	major (UV dev)
		1554	ALIAS:
		1555	minor = 1
		1556	CODE:
		1557	RETVAL = ix ? minor (dev) : major (dev);
		1558	OUTPUT:
		1559	RETVAL
		1560
		1561	UV
		1562	makedev (UV maj, UV min)
		1563	CODE:
		1564	RETVAL = makedev (maj, min);
		1565	OUTPUT:
		1566	RETVAL
		1567
857	void	1568	void
858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1569	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
859	PPCODE:	1570	PPCODE:
860	{	1571	{
861	dREQ;	1572	dREQ;
862		1573
863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1574	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1575	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
865	req->sv1 = newSVsv (fh_or_path);	1576	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
866
867	if (SvPOK (req->sv1))
868	{
869	req->type = EIO_UTIME;
870	req->ptr1 = SvPVbyte_nolen (req->sv1);
871	}
872	else
873	{
874	req->type = EIO_FUTIME;
875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
876	}
877		1577
878	REQ_SEND;	1578	REQ_SEND;
879	}	1579	}
880		1580
881	void	1581	void
882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1582	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
883	PPCODE:	1583	PPCODE:
884	{	1584	{
885	dREQ;	1585	dREQ;
886		1586
887	req->sv1 = newSVsv (fh_or_path);
888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1587	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
889		1588	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
890	if (SvPOK (req->sv1))
891	{
892	req->type = EIO_TRUNCATE;
893	req->ptr1 = SvPVbyte_nolen (req->sv1);
894	}
895	else
896	{
897	req->type = EIO_FTRUNCATE;
898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
899	}
900		1589
901	REQ_SEND;	1590	REQ_SEND;
902	}	1591	}
903		1592
904	void	1593	void
905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1594	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
906	ALIAS:
907	aio_chmod = EIO_CHMOD
908	aio_mkdir = EIO_MKDIR
909	PPCODE:	1595	PPCODE:
910	{	1596	{
911	dREQ;	1597	dREQ;
912		1598
913	req->int2 = mode;	1599	req->int2 = mode;
914	req->sv1 = newSVsv (fh_or_path);	1600	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
915
916	if (SvPOK (req->sv1))
917	{
918	req->type = ix;
919	req->ptr1 = SvPVbyte_nolen (req->sv1);
920	}
921	else
922	{
923	req->type = EIO_FCHMOD;
924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
925	}
926		1601
927	REQ_SEND;	1602	REQ_SEND;
928	}	1603	}
929		1604
930	void	1605	void
931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1606	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
932	PPCODE:	1607	PPCODE:
933	{	1608	{
934	dREQ;	1609	dREQ;
935		1610
936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1611	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1612	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
938	req->sv1 = newSVsv (fh_or_path);	1613	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
939
940	if (SvPOK (req->sv1))
941	{
942	req->type = EIO_CHOWN;
943	req->ptr1 = SvPVbyte_nolen (req->sv1);
944	}
945	else
946	{
947	req->type = EIO_FCHOWN;
948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
949	}
950		1614
951	REQ_SEND;	1615	REQ_SEND;
952	}	1616	}
953		1617
954	void	1618	void
955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)	1619	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
956	PPCODE:	1620	PPCODE:
957	{	1621	{
958	dREQ;	1622	dREQ;
959		1623
960	req->type = EIO_READDIR;	1624	req->type = EIO_READDIR;
961	req->sv1 = newSVsv (pathname);
962	req->ptr1 = SvPVbyte_nolen (req->sv1);
963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;	1625	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
964		1626
965	if (flags & EIO_READDIR_DENTS)	1627	if (flags & EIO_READDIR_DENTS)
966	req->int1 |= EIO_READDIR_CUSTOM2;	1628	req->int1 |= EIO_READDIR_CUSTOM2;
967		1629
		1630	req_set_path1 (req, pathname);
		1631
968	REQ_SEND;	1632	REQ_SEND;
969	}	1633	}
970		1634
971	void	1635	void
		1636	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1637	PPCODE:
		1638	{
		1639	dREQ;
		1640
		1641	req->type = EIO_MKDIR;
		1642	req->int2 = mode;
		1643	req_set_path1 (req, pathname);
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1649	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
973	ALIAS:	1650	ALIAS:
974	aio_unlink = EIO_UNLINK	1651	aio_unlink = EIO_UNLINK
975	aio_rmdir = EIO_RMDIR	1652	aio_rmdir = EIO_RMDIR
976	aio_readdir = EIO_READDIR	1653	aio_readdir = EIO_READDIR
977	PPCODE:	1654	PPCODE:
978	{	1655	{
979	dREQ;	1656	dREQ;
980		1657
981	req->type = ix;	1658	req->type = ix;
982	req->sv1 = newSVsv (pathname);	1659	req_set_path1 (req, pathname);
983	req->ptr1 = SvPVbyte_nolen (req->sv1);
984		1660
985	REQ_SEND;	1661	REQ_SEND;
986	}	1662	}
987		1663
988	void	1664	void
989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1665	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
990	ALIAS:	1666	ALIAS:
991	aio_link = EIO_LINK	1667	aio_link = EIO_LINK
992	aio_symlink = EIO_SYMLINK	1668	aio_symlink = EIO_SYMLINK
993	aio_rename = EIO_RENAME	1669	aio_rename = EIO_RENAME
994	PPCODE:	1670	PPCODE:
995	{	1671	{
		1672	eio_wd wd2 = 0;
996	dREQ;	1673	dREQ;
997		1674
998	req->type = ix;	1675	req->type = ix;
999	req->sv1 = newSVsv (oldpath);	1676	req_set_path1 (req, oldpath);
1000	req->ptr1 = SvPVbyte_nolen (req->sv1);	1677	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1001	req->sv2 = newSVsv (newpath);	1678	req->int3 = (long)wd2;
1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
1003		1679
1004	REQ_SEND;	1680	REQ_SEND;
1005	}	1681	}
1006		1682
1007	void	1683	void
		1684	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1685	PPCODE:
		1686	{
		1687	eio_wd wd2 = 0;
		1688	dREQ;
		1689
		1690	req->type = EIO_RENAME;
		1691	req_set_path1 (req, oldpath);
		1692	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1693	req->int2 = flags;
		1694	req->int3 = (long)wd2;
		1695
		1696	REQ_SEND;
		1697	}
		1698
		1699	void
1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1700	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1009	PPCODE:	1701	PPCODE:
1010	{	1702	{
1011	dREQ;	1703	dREQ;
1012		1704
1013	req->type = EIO_MKNOD;	1705	req->type = EIO_MKNOD;
1014	req->sv1 = newSVsv (pathname);
1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1016	req->int2 = (mode_t)mode;	1706	req->int2 = (mode_t)mode;
1017	req->offs = dev;	1707	req->offs = dev;
		1708	req_set_path1 (req, pathname);
1018		1709
1019	REQ_SEND;	1710	REQ_SEND;
1020	}	1711	}
1021		1712
1022	void	1713	void
		1714	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1715	ALIAS:
		1716	aio_mtouch = EIO_MTOUCH
		1717	aio_msync = EIO_MSYNC
		1718	PPCODE:
		1719	{
		1720	STRLEN svlen;
		1721	char *svptr = SvPVbyte (data, svlen);
		1722	UV len = SvUV (length);
		1723
		1724	if (flags < 0)
		1725	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1726
		1727	if (offset < 0)
		1728	offset += svlen;
		1729
		1730	if (offset < 0 || offset > svlen)
		1731	croak ("offset outside of scalar");
		1732
		1733	if (!SvOK (length) || len + offset > svlen)
		1734	len = svlen - offset;
		1735
		1736	{
		1737	dREQ;
		1738
		1739	req->type = ix;
		1740	req->sv2 = SvREFCNT_inc (data);
		1741	req->ptr2 = (char *)svptr + offset;
		1742	req->size = len;
		1743	req->int1 = flags;
		1744
		1745	REQ_SEND;
		1746	}
		1747	}
		1748
		1749	void
		1750	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1751	PPCODE:
		1752	{
		1753	STRLEN svlen;
		1754	char *svptr = SvPVbyte (data, svlen);
		1755	UV len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	{
		1767	dREQ;
		1768
		1769	req->type = EIO_MLOCK;
		1770	req->sv2 = SvREFCNT_inc (data);
		1771	req->ptr2 = (char *)svptr + offset;
		1772	req->size = len;
		1773
		1774	REQ_SEND;
		1775	}
		1776	}
		1777
		1778	void
		1779	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1780	PPCODE:
		1781	{
		1782	dREQ;
		1783
		1784	req->type = EIO_MLOCKALL;
		1785	req->int1 = flags;
		1786
		1787	REQ_SEND;
		1788	}
		1789
		1790	void
		1791	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1792	PPCODE:
		1793	{
		1794	int fd = s_fileno_croak (fh, 0);
		1795	dREQ;
		1796
		1797	req->type = EIO_CUSTOM;
		1798	req->sv1 = newSVsv (fh);
		1799	req->int1 = fd;
		1800
		1801	req->feed = fiemap;
		1802	#if HAVE_FIEMAP
		1803	/* keep our fingers crossed that the next two types are 64 bit */
		1804	req->offs = start;
		1805	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1806	req->int2 = flags;
		1807	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1808	#endif
		1809
		1810	REQ_SEND;
		1811	}
		1812
		1813	void
		1814	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1815	PPCODE:
		1816	{
		1817	char *svptr = 0;
		1818
		1819	sv_clear_foreign (data);
		1820
		1821	if (length) /* known length, directly read into scalar */
		1822	{
		1823	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1824	svptr = sv_grow (data, length);
		1825	else if (SvCUR (data) < length)
		1826	croak ("length outside of scalar, and cannot grow");
		1827	else
		1828	svptr = SvPVbyte_nolen (data);
		1829	}
		1830
		1831	{
		1832	dREQ;
		1833
		1834	req->type = EIO_SLURP;
		1835	req_set_path1 (req, pathname);
		1836	req->offs = offset;
		1837	req->size = length;
		1838	req->sv2 = SvREFCNT_inc (data);
		1839	req->ptr2 = svptr;
		1840
		1841	if (!SvREADONLY (data))
		1842	{
		1843	SvREADONLY_on (data);
		1844	req->flags |= FLAG_SV2_RO_OFF;
		1845	}
		1846
		1847	REQ_SEND;
		1848	}
		1849	}
		1850
		1851	void
1023	aio_busy (double delay, SV *callback=&PL_sv_undef)	1852	aio_busy (double delay, SV *callback = &PL_sv_undef)
1024	PPCODE:	1853	PPCODE:
1025	{	1854	{
1026	dREQ;	1855	dREQ;
1027		1856
1028	req->type = EIO_BUSY;	1857	req->type = EIO_BUSY;
…		…
1030		1859
1031	REQ_SEND;	1860	REQ_SEND;
1032	}	1861	}
1033		1862
1034	void	1863	void
1035	aio_group (SV *callback=&PL_sv_undef)	1864	aio_group (SV *callback = &PL_sv_undef)
1036	PROTOTYPE: ;$
1037	PPCODE:	1865	PPCODE:
1038	{	1866	{
1039	dREQ;	1867	dREQ;
1040		1868
1041	req->type = EIO_GROUP;	1869	req->type = EIO_GROUP;
1042		1870
		1871	PUTBACK;
1043	req_submit (req);	1872	req_submit (req);
		1873	SPAGAIN;
		1874
1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1875	XPUSHs (req_sv (req, aio_grp_stash));
1045	}	1876	}
1046		1877
1047	void	1878	void
1048	aio_nop (SV *callback=&PL_sv_undef)	1879	aio_nop (SV *callback = &PL_sv_undef)
1049	ALIAS:	1880	ALIAS:
1050	aio_nop = EIO_NOP	1881	aio_nop = EIO_NOP
1051	aio_sync = EIO_SYNC	1882	aio_sync = EIO_SYNC
1052	PPCODE:	1883	PPCODE:
1053	{	1884	{
…		…
1057		1888
1058	REQ_SEND;	1889	REQ_SEND;
1059	}	1890	}
1060		1891
1061	int	1892	int
1062	aioreq_pri (int pri = 0)	1893	aioreq_pri (int pri = NO_INIT)
1063	PROTOTYPE: ;$
1064	CODE:	1894	CODE:
1065	RETVAL = next_pri;	1895	RETVAL = next_pri;
1066	if (items > 0)	1896	if (items > 0)
1067	{	1897	{
1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1898	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1910	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1081	next_pri = nice;	1911	next_pri = nice;
1082		1912
1083	void	1913	void
1084	flush ()	1914	flush ()
1085	PROTOTYPE:
1086	CODE:	1915	CODE:
1087	while (eio_nreqs ())	1916	while (eio_nreqs ())
1088	{	1917	{
1089	poll_wait ();	1918	poll_wait ();
1090	poll_cb ();	1919	poll_cb ();
1091	}	1920	}
1092		1921
1093	int	1922	int
1094	poll()	1923	poll ()
1095	PROTOTYPE:
1096	CODE:	1924	CODE:
1097	poll_wait ();	1925	poll_wait ();
1098	RETVAL = poll_cb ();	1926	RETVAL = poll_cb ();
1099	OUTPUT:	1927	OUTPUT:
1100	RETVAL	1928	RETVAL
1101		1929
1102	int	1930	int
1103	poll_fileno()	1931	poll_fileno ()
1104	PROTOTYPE:
1105	CODE:	1932	CODE:
1106	RETVAL = respipe [0];	1933	RETVAL = s_epipe_fd (&respipe);
1107	OUTPUT:	1934	OUTPUT:
1108	RETVAL	1935	RETVAL
1109		1936
1110	int	1937	int
1111	poll_cb(...)	1938	poll_cb (...)
1112	PROTOTYPE:	1939	PROTOTYPE:
1113	CODE:	1940	CODE:
1114	RETVAL = poll_cb ();	1941	RETVAL = poll_cb ();
1115	OUTPUT:	1942	OUTPUT:
1116	RETVAL	1943	RETVAL
1117		1944
1118	void	1945	void
1119	poll_wait()	1946	poll_wait ()
1120	PROTOTYPE:
1121	CODE:	1947	CODE:
1122	poll_wait ();	1948	poll_wait ();
1123		1949
1124	int	1950	int
1125	nreqs()	1951	nreqs ()
1126	PROTOTYPE:
1127	CODE:	1952	CODE:
1128	RETVAL = eio_nreqs ();	1953	RETVAL = eio_nreqs ();
1129	OUTPUT:	1954	OUTPUT:
1130	RETVAL	1955	RETVAL
1131		1956
1132	int	1957	int
1133	nready()	1958	nready ()
1134	PROTOTYPE:
1135	CODE:	1959	CODE:
1136	RETVAL = eio_nready ();	1960	RETVAL = eio_nready ();
1137	OUTPUT:	1961	OUTPUT:
1138	RETVAL	1962	RETVAL
1139		1963
1140	int	1964	int
1141	npending()	1965	npending ()
1142	PROTOTYPE:
1143	CODE:	1966	CODE:
1144	RETVAL = eio_npending ();	1967	RETVAL = eio_npending ();
1145	OUTPUT:	1968	OUTPUT:
1146	RETVAL	1969	RETVAL
1147		1970
1148	int	1971	int
1149	nthreads()	1972	nthreads ()
1150	PROTOTYPE:
1151	CODE:	1973	CODE:
1152	RETVAL = eio_nthreads ();	1974	RETVAL = eio_nthreads ();
1153	OUTPUT:	1975	OUTPUT:
1154	RETVAL	1976	RETVAL
1155		1977
		1978	int
		1979	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1980	CODE:
		1981	RETVAL = posix_fadvise (fh, offset, length, advice);
		1982	OUTPUT:
		1983	RETVAL
		1984
		1985	IV
		1986	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1987	CODE:
		1988	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1989	OUTPUT:
		1990	RETVAL
		1991
		1992	void
		1993	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1994	PPCODE:
		1995	sv_clear_foreign (scalar);
		1996	{
		1997	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1998	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1999	if (addr == (void *)-1)
		2000	XSRETURN_NO;
		2001
		2002	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2003
		2004	if (!(prot & PROT_WRITE))
		2005	SvREADONLY_on (scalar);
		2006
		2007	XSRETURN_YES;
		2008	}
		2009
		2010	void
		2011	munmap (SV *scalar)
		2012	CODE:
		2013	sv_clear_foreign (scalar);
		2014
		2015	int
		2016	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2017	ALIAS:
		2018	mprotect = 1
		2019	CODE:
		2020	{
		2021	STRLEN svlen;
		2022	void *addr = SvPVbyte (scalar, svlen);
		2023	STRLEN len = SvUV (length);
		2024
		2025	if (offset < 0)
		2026	offset += svlen;
		2027
		2028	if (offset < 0 || offset > svlen)
		2029	croak ("offset outside of scalar");
		2030
		2031	if (!SvOK (length) || len + offset > svlen)
		2032	len = svlen - offset;
		2033
		2034	addr = (void *)(((intptr_t)addr) + offset);
		2035	eio_page_align (&addr, &len);
		2036
		2037	switch (ix)
		2038	{
		2039	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2040	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2041	}
		2042	}
		2043	OUTPUT:
		2044	RETVAL
		2045
		2046	int
		2047	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2048	CODE:
		2049	{
		2050	STRLEN svlen;
		2051	void *addr = SvPVbyte (scalar, svlen);
		2052	size_t len = SvUV (length);
		2053
		2054	if (offset < 0)
		2055	offset += svlen;
		2056
		2057	if (offset < 0 || offset > svlen)
		2058	croak ("offset outside of scalar");
		2059
		2060	if (!SvOK (length) || len + offset > svlen)
		2061	len = svlen - offset;
		2062
		2063	addr = (void *)(((intptr_t)addr) + offset);
		2064	eio_page_align (&addr, &len);
		2065	#if _POSIX_MEMLOCK_RANGE
		2066	RETVAL = munlock (addr, len);
		2067	#else
		2068	RETVAL = EIO_ENOSYS ();
		2069	#endif
		2070	}
		2071	OUTPUT:
		2072	RETVAL
		2073
		2074	int
		2075	munlockall ()
		2076	CODE:
		2077	#if _POSIX_MEMLOCK
		2078	munlockall ();
		2079	#else
		2080	RETVAL = EIO_ENOSYS ();
		2081	#endif
		2082	OUTPUT:
		2083	RETVAL
		2084
		2085	int
		2086	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2087	CODE:
		2088	{
		2089	#if HAVE_LINUX_SPLICE
		2090	loff_t off_in_, off_out_;
		2091	RETVAL = splice (
		2092	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2093	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2094	length, flags
		2095	);
		2096	#else
		2097	RETVAL = EIO_ENOSYS ();
		2098	#endif
		2099	}
		2100	OUTPUT:
		2101	RETVAL
		2102
		2103	int
		2104	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2105	CODE:
		2106	#if HAVE_LINUX_SPLICE
		2107	RETVAL = tee (rfh, wfh, length, flags);
		2108	#else
		2109	RETVAL = EIO_ENOSYS ();
		2110	#endif
		2111	OUTPUT:
		2112	RETVAL
		2113
		2114	int
		2115	pipesize (aio_rfd rfh, int new_size = -1)
		2116	PROTOTYPE: $;$
		2117	CODE:
		2118	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2119	if (new_size >= 0)
		2120	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2121	else
		2122	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2123	#else
		2124	errno = ENOSYS;
		2125	RETVAL = -1;
		2126	#endif
		2127	OUTPUT:
		2128	RETVAL
		2129
		2130	void
		2131	pipe2 (int flags = 0)
		2132	PROTOTYPE: ;$
		2133	PPCODE:
		2134	{
		2135	int fd[2];
		2136	int res;
		2137
		2138	if (flags)
		2139	#if HAVE_PIPE2
		2140	res = pipe2 (fd, flags);
		2141	#else
		2142	res = (errno = ENOSYS, -1);
		2143	#endif
		2144	else
		2145	res = pipe (fd);
		2146
		2147	if (!res)
		2148	{
		2149	EXTEND (SP, 2);
		2150	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2151	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2152	}
		2153	}
		2154
		2155	UV
		2156	get_fdlimit ()
		2157	CODE:
		2158	#if HAVE_RLIMITS
		2159	struct rlimit rl;
		2160	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2161	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2162	#endif
		2163	XSRETURN_UNDEF;
		2164	OUTPUT:
		2165	RETVAL
		2166
		2167	void
		2168	min_fdlimit (UV limit = 0x7fffffffU)
		2169	CODE:
		2170	{
		2171	#if HAVE_RLIMITS
		2172	struct rlimit rl;
		2173	rlim_t orig_rlim_max;
		2174	UV bit;
		2175
		2176	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2177	goto fail;
		2178
		2179	if (rl.rlim_cur == RLIM_INFINITY)
		2180	XSRETURN_YES;
		2181
		2182	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2183
		2184	if (rl.rlim_cur < limit)
		2185	{
		2186	rl.rlim_cur = limit;
		2187
		2188	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2189	rl.rlim_max = rl.rlim_cur;
		2190	}
		2191
		2192	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2193	XSRETURN_YES;
		2194
		2195	if (errno == EPERM)
		2196	{
		2197	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2198	/* our limit overflows a system-wide limit */
		2199	/* try an adaptive algorithm, but do not lower the hardlimit */
		2200	rl.rlim_max = 0;
		2201	for (bit = 0x40000000U; bit; bit >>= 1)
		2202	{
		2203	rl.rlim_max |= bit;
		2204	rl.rlim_cur = rl.rlim_max;
		2205
		2206	/* nevr decrease the hard limit */
		2207	if (rl.rlim_max < orig_rlim_max)
		2208	break;
		2209
		2210	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2211	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2212	}
		2213
		2214	/* now, raise the soft limit to the max permitted */
		2215	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2216	{
		2217	rl.rlim_cur = rl.rlim_max;
		2218	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2219	errno = EPERM;
		2220	}
		2221	}
		2222	#endif
		2223	fail:
		2224	XSRETURN_UNDEF;
		2225	}
		2226
1156	void _on_next_submit (SV *cb)	2227	void _on_next_submit (SV *cb)
1157	CODE:	2228	CODE:
1158	SvREFCNT_dec (on_next_submit);	2229	SvREFCNT_dec (on_next_submit);
1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2230	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1160		2231
1161	PROTOTYPES: DISABLE	2232	PROTOTYPES: DISABLE
1162		2233
		2234	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2235
		2236	BOOT:
		2237	{
		2238	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2239	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2240	}
		2241
		2242	void
		2243	DESTROY (SV *self)
		2244	CODE:
		2245	{
		2246	aio_wd wd = SvAIO_WD (self);
		2247	#if HAVE_AT
		2248	{
		2249	SV *callback = &PL_sv_undef;
		2250	dREQ; /* clobbers next_pri :/ */
		2251	next_pri = req->pri; /* restore next_pri */
		2252	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2253	req->type = EIO_WD_CLOSE;
		2254	req->wd = wd;
		2255	REQ_SEND;
		2256	}
		2257	#else
		2258	eio_wd_close_sync (wd);
		2259	#endif
		2260	}
		2261
1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2262	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1164		2263
1165	void	2264	void
1166	cancel (aio_req_ornot req)	2265	cancel (aio_req_ornot req)
1167	CODE:	2266	CODE:
1168	eio_cancel (req);	2267	eio_cancel (req);
1169		2268
1170	void	2269	void
1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2270	cb (aio_req_ornot req, SV *callback = NO_INIT)
1172	PPCODE:	2271	PPCODE:
1173	{	2272	{
1174	if (GIMME_V != G_VOID)	2273	if (GIMME_V != G_VOID)
1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);	2274	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1176		2275
…		…
1241	limit (aio_req grp, int limit)	2340	limit (aio_req grp, int limit)
1242	CODE:	2341	CODE:
1243	eio_grp_limit (grp, limit);	2342	eio_grp_limit (grp, limit);
1244		2343
1245	void	2344	void
1246	feed (aio_req grp, SV *callback=&PL_sv_undef)	2345	feed (aio_req grp, SV *callback = &PL_sv_undef)
1247	CODE:	2346	CODE:
1248	{	2347	{
1249	SvREFCNT_dec (grp->sv2);	2348	SvREFCNT_dec (grp->sv2);
1250	grp->sv2 = newSVsv (callback);	2349	grp->sv2 = newSVsv (callback);
1251	grp->feed = aio_grp_feed;	2350	grp->feed = aio_grp_feed;

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