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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.246 by root, Fri Jun 23 21:43:51 2017 UTC vs.
Revision 1.299 by root, Mon Sep 26 10:30:53 2022 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	#include "perliol.h"
8		9
9	#include "schmorp.h"	10	#if !defined mg_findext
		11	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		12	#endif
10		13
11	#include <stddef.h>	14	#include <stddef.h>
12	#include <stdlib.h>	15	#include <stdlib.h>
13	#include <errno.h>	16	#include <errno.h>
14	#include <sys/types.h>	17	#include <sys/types.h>
		18	#include <sys/socket.h>
15	#include <sys/stat.h>	19	#include <sys/stat.h>
16	#include <limits.h>	20	#include <limits.h>
17	#include <fcntl.h>	21	#include <fcntl.h>
18	#include <sched.h>	22	#include <sched.h>
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		23
38	/* perl namespace pollution */	24	/* perl namespace pollution */
39	#undef VERSION	25	#undef VERSION
40		26
41	/* perl stupidly overrides readdir and maybe others */	27	/* perl stupidly overrides readdir and maybe others */
…		…
75	#undef fchmod	61	#undef fchmod
76	#undef dup	62	#undef dup
77	#undef dup2	63	#undef dup2
78	#undef abort	64	#undef abort
79	#undef pipe	65	#undef pipe
		66	#undef utime
80		67
81	#define EIO_STRUCT_STAT struct _stati64	68	#define EIO_STRUCT_STAT struct _stati64
82	#define EIO_STRUCT_STATI64	69	#define EIO_STRUCT_STATI64
83		70
84	#else	71	#else
85		72
86	#include <sys/time.h>	73	#include <sys/time.h>
87	#include <sys/select.h>	74	#include <sys/select.h>
		75	#include <sys/wait.h>
88	#include <unistd.h>	76	#include <unistd.h>
89	#include <utime.h>	77	#include <utime.h>
90	#include <signal.h>	78	#include <signal.h>
91		79
92	#define EIO_STRUCT_STAT Stat_t	80	#define EIO_STRUCT_STAT Stat_t
…		…
104	#define expect_false(expr) expect ((expr) != 0, 0)	92	#define expect_false(expr) expect ((expr) != 0, 0)
105	#define expect_true(expr) expect ((expr) != 0, 1)	93	#define expect_true(expr) expect ((expr) != 0, 1)
106		94
107	/*****************************************************************************/	95	/*****************************************************************************/
108		96
		97	#include "config.h"
		98
		99	#if HAVE_SYS_MKDEV_H
		100	# include <sys/mkdev.h>
		101	#elif HAVE_SYS_SYSMACROS_H
		102	# include <sys/sysmacros.h>
		103	#endif
		104
		105	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		106	# include <sys/mman.h>
		107	#endif
		108
		109	#if HAVE_SYS_UIO_H
		110	# include <sys/uio.h>
		111	#endif
		112
		113	/* MUST be included before linux/fs.h, as the latter includes
		114	* linux/mount.h, which is incompatible to sys/mount.h
		115	*/
		116	#if HAVE_SYS_MOUNT_H
		117	# include <sys/mount.h>
		118	#endif
		119
		120	/* the incompetent fool that created musl keeps __linux__, refuses
		121	* to implement any linux standard apis, and also has no way to test
		122	* for his broken implementation. don't complain to me if this fails
		123	* for you.
		124	*/
		125	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		126	# include <linux/fs.h> /* MUST be included after sys/mount.h */
		127	# ifdef FS_IOC_FIEMAP
		128	# include <linux/types.h>
		129	# include <linux/fiemap.h>
		130	# undef HAVE_FIEMAP
		131	# define HAVE_FIEMAP 1
		132	# endif
		133	#endif
		134
		135	#if HAVE_ST_XTIMENSEC
		136	# define ATIMENSEC PL_statcache.st_atimensec
		137	# define MTIMENSEC PL_statcache.st_mtimensec
		138	# define CTIMENSEC PL_statcache.st_ctimensec
		139	#elif HAVE_ST_XTIMESPEC
		140	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		141	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		142	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		143	#else
		144	# define ATIMENSEC 0
		145	# define MTIMENSEC 0
		146	# define CTIMENSEC 0
		147	#endif
		148
		149	#if HAVE_ST_BIRTHTIMENSEC
		150	# define BTIMESEC PL_statcache.st_birthtime
		151	# define BTIMENSEC PL_statcache.st_birthtimensec
		152	#elif HAVE_ST_BIRTHTIMESPEC
		153	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		154	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		155	#else
		156	# define BTIMESEC 0
		157	# define BTIMENSEC 0
		158	#endif
		159
		160	#if HAVE_ST_GEN
		161	# define ST_GEN PL_statcache.st_gen
		162	#else
		163	# define ST_GEN 0
		164	#endif
		165
		166	#include "schmorp.h"
		167
		168	#if HAVE_EVENTFD
		169	# include <sys/eventfd.h>
		170	#endif
		171
		172	#if HAVE_TIMERFD
		173	# include <sys/timerfd.h>
		174	#endif
		175
		176	#if HAVE_RLIMITS
		177	#include <sys/time.h>
		178	#include <sys/resource.h>
		179	#endif
		180
109	typedef SV SV8; /* byte-sv, used for argument-checking */	181	typedef SV SV8; /* byte-sv, used for argument-checking */
		182	typedef char *octet_string;
		183	typedef char *octet_string_ornull;
110	typedef int aio_rfd; /* read file desriptor */	184	typedef int aio_rfd; /* read file desriptor */
111	typedef int aio_wfd; /* write file descriptor */	185	typedef int aio_wfd; /* write file descriptor */
112		186
113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;	187	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
114		188
…		…
119	STRLEN stroffset; \	193	STRLEN stroffset; \
120	SV *self;	194	SV *self;
121		195
122	#define EIO_NO_WRAPPERS 1	196	#define EIO_NO_WRAPPERS 1
123		197
124	#include "libeio/config.h"
125	#include "libeio/eio.h"	198	#include "libeio/eio.h"
126		199
127	static int req_invoke (eio_req *req);	200	static int req_invoke (eio_req *req);
128	#define EIO_FINISH(req) req_invoke (req)	201	#define EIO_FINISH(req) req_invoke (req)
129	static void req_destroy (eio_req *grp);	202	static void req_destroy (eio_req *grp);
…		…
145	# else	218	# else
146	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */	219	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
147	# endif	220	# endif
148	#endif	221	#endif
149		222
		223	#ifndef makedev
		224	# define makedev(maj,min) (((maj) << 8) | (min))
		225	#endif
		226	#ifndef major
		227	# define major(dev) ((dev) >> 8)
		228	#endif
		229	#ifndef minor
		230	# define minor(dev) ((dev) & 0xff)
		231	#endif
		232
		233	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
		234	#ifdef __sun
		235	# undef PAGESIZE
		236	#endif
		237
		238	#if PAGESIZE <= 0
		239	# define PAGESIZE sysconf (_SC_PAGESIZE)
		240	#endif
		241
		242	/* solaris perl seems to declare a wrong syscall function that clashes with system includes */
		243	#ifdef __sun
		244	# undef HAVE_SYSCALL
		245	#endif
		246
		247	#if HAVE_SYSCALL
		248	#include <sys/syscall.h>
		249	#else
		250	# define syscall(nr,...) (errno = ENOSYS, -1)
		251	#endif
		252
		253	/*****************************************************************************/
		254
		255	#if !_POSIX_MAPPED_FILES
		256	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		257	# define munmap(addr,length) EIO_ENOSYS ()
		258	#endif
		259
		260	#if !_POSIX_MEMORY_PROTECTION
		261	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		262	#endif
		263
		264	#if !MREMAP_MAYMOVE
		265	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		266	#endif
		267
		268	#define FOREIGN_MAGIC PERL_MAGIC_ext
		269
		270	static int ecb_cold
		271	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		272	{
		273	int old_errno = errno;
		274	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		275	errno = old_errno;
		276
		277	mg->mg_obj = 0; /* just in case */
		278
		279	SvREADONLY_off (sv);
		280
		281	if (SvPVX (sv) != mg->mg_ptr)
		282	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		283
		284	SvCUR_set (sv, 0);
		285	SvPVX (sv) = 0;
		286	SvOK_off (sv);
		287
		288	return 0;
		289	}
		290
		291	static MGVTBL mmap_vtbl = {
		292	0, 0, 0, 0, mmap_free
		293	};
		294
		295	static int ecb_cold
		296	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		297	{
		298	free (mg->mg_ptr);
		299	mg->mg_obj = 0; /* just in case */
		300
		301	SvREADONLY_off (sv);
		302
		303	if (SvPVX (sv) != mg->mg_ptr)
		304	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		305
		306	SvCUR_set (sv, 0);
		307	SvPVX (sv) = 0;
		308	SvOK_off (sv);
		309
		310	return 0;
		311	}
		312
		313	static MGVTBL sysfree_vtbl = {
		314	0, 0, 0, 0, sysfree_free
		315	};
		316
		317	/*****************************************************************************/
		318
		319	/* helper: set scalar to foreign ptr with custom free */
		320	ecb_noinline
		321	static void
		322	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		323	{
		324	sv_force_normal (sv);
		325
		326	/* we store the length in mg_obj, as namlen is I32 :/ */
		327	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		328	->mg_obj = (SV *)length;
		329
		330	SvUPGRADE (sv, SVt_PV); /* nop... */
		331
		332	if (SvLEN (sv))
		333	Safefree (SvPVX (sv));
		334
		335	SvPVX (sv) = (char *)addr;
		336	SvCUR_set (sv, length);
		337	SvLEN_set (sv, 0);
		338	SvPOK_only (sv);
		339	}
		340
		341	static void
		342	sv_clear_foreign (SV *sv)
		343	{
		344	/* todo: iterate over magic and only free ours, but of course */
		345	/* the perl5porters will call that (correct) behaviour buggy */
		346	sv_unmagic (sv, FOREIGN_MAGIC);
		347	}
		348
		349	/*****************************************************************************/
		350
150	/* defines all sorts of constants to 0 unless they are already defined */	351	/* defines all sorts of constants to 0 unless they are already defined */
151	/* also provides const_iv_ and const_niv_ macros for them */	352	/* also provides const_iv_ and const_niv_ macros for them */
152	#include "def0.h"	353	#include "def0.h"
153
154	#ifndef makedev
155	# define makedev(maj,min) (((maj) << 8) | (min))
156	#endif
157	#ifndef major
158	# define major(dev) ((dev) >> 8)
159	#endif
160	#ifndef minor
161	# define minor(dev) ((dev) & 0xff)
162	#endif
163
164	#if PAGESIZE <= 0
165	# define PAGESIZE sysconf (_SC_PAGESIZE)
166	#endif
167		354
168	/*****************************************************************************/	355	/*****************************************************************************/
169		356
170	static void	357	static void
171	fiemap (eio_req *req)	358	fiemap (eio_req *req)
…		…
179	int count = req->int3;	366	int count = req->int3;
180		367
181	req->flags |= EIO_FLAG_PTR1_FREE;	368	req->flags |= EIO_FLAG_PTR1_FREE;
182		369
183	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */	370	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
184	/* increase in 3.5kb steps */	371	/* increase in fixed steps */
185	if (count < 0)	372	if (count < 0)
186	count = 8;	373	count = 8;
187		374
188	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);	375	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
189	errno = ENOMEM;	376	errno = ENOMEM;
…		…
242		429
243	for (count = 0; count < incmap->fm_mapped_extents; ++count)	430	for (count = 0; count < incmap->fm_mapped_extents; ++count)
244	{	431	{
245	struct fiemap_extent *e = incmap->fm_extents + count;	432	struct fiemap_extent *e = incmap->fm_extents + count;
246		433
		434	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		435
247	if (e->fe_logical + e->fe_length >= end_offset)	436	if (e->fe_logical >= end_offset)
248	goto done;	437	goto done;
249
250	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
251		438
252	if (e->fe_flags & FIEMAP_EXTENT_LAST)	439	if (e->fe_flags & FIEMAP_EXTENT_LAST)
253	goto done;	440	goto done;
254		441
255	}	442	}
…		…
262	errno = ENOSYS;	449	errno = ENOSYS;
263	#endif	450	#endif
264	}	451	}
265		452
266	/*****************************************************************************/	453	/*****************************************************************************/
		454
		455	static int close_fd; /* dummy fd to close fds via dup2 */
		456
		457	#if HAVE_STATX
		458	static struct statx stx;
		459	#define statx_offsetof(member) offsetof (struct statx, member)
		460	#define eio__statx statx
		461	#else
		462	#define statx_offsetof(member) 0
		463	#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
		464	#endif
267		465
268	enum {	466	enum {
269	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	467	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
270	};	468	};
271		469
…		…
295	/* read any signals sent by the worker threads */	493	/* read any signals sent by the worker threads */
296	s_epipe_drain (&respipe);	494	s_epipe_drain (&respipe);
297	}	495	}
298		496
299	/* must be called at most once */	497	/* must be called at most once */
		498	ecb_noinline
300	static SV *	499	static SV *
301	req_sv (aio_req req, HV *stash)	500	req_sv (aio_req req, HV *stash)
302	{	501	{
303	if (!req->self)	502	if (!req->self)
304	{	503	{
…		…
313	newSVaio_wd (aio_wd wd)	512	newSVaio_wd (aio_wd wd)
314	{	513	{
315	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);	514	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
316	}	515	}
317		516
		517	ecb_noinline
318	static aio_req	518	static aio_req
319	SvAIO_REQ (SV *sv)	519	SvAIO_REQ (SV *sv)
320	{	520	{
321	MAGIC *mg;	521	MAGIC *mg;
322		522
…		…
385	FREETMPS;	585	FREETMPS;
386	LEAVE;	586	LEAVE;
387	}	587	}
388	}	588	}
389		589
		590	ecb_noinline
390	static void	591	static void
391	req_submit (eio_req *req)	592	req_submit (eio_req *req)
392	{	593	{
393	eio_submit (req);	594	eio_submit (req);
394		595
…		…
591	SvSETMAGIC (req->sv2);	792	SvSETMAGIC (req->sv2);
592	PUSHs (sv_result);	793	PUSHs (sv_result);
593	}	794	}
594	break;	795	break;
595		796
		797	case EIO_SLURP:
		798	{
		799	if (req->result >= 0)
		800	{
		801	/* if length was originally not known, we steal the malloc'ed memory */
		802	if (req->flags & EIO_FLAG_PTR2_FREE)
		803	{
		804	req->flags &= ~EIO_FLAG_PTR2_FREE;
		805	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		806	}
		807	else
		808	{
		809	SvCUR_set (req->sv2, req->result);
		810	*SvEND (req->sv2) = 0;
		811	SvPOK_only (req->sv2);
		812	}
		813
		814	SvSETMAGIC (req->sv2);
		815	}
		816
		817	PUSHs (sv_result);
		818	}
		819	break;
		820
596	case EIO_CUSTOM:	821	case EIO_CUSTOM:
597	if (req->feed == fiemap)	822	if (req->feed == fiemap)
598	{	823	{
599	#if HAVE_FIEMAP	824	#if HAVE_FIEMAP
600	if (!req->result)	825	if (!req->result)
…		…
631	}	856	}
632	else	857	else
633	PUSHs (sv_result);	858	PUSHs (sv_result);
634	break;	859	break;
635		860
		861	#if 0
		862	case EIO_CLOSE:
		863	PerlIOUnix_refcnt_dec (req->int1);
		864	break;
		865	#endif
		866
636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */	867	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
637	if (req->result > 0)	868	if (req->result > 0)
638	SvIV_set (sv_result, 0);	869	SvIV_set (sv_result, 0);
639	/* FALLTHROUGH */	870	/* FALLTHROUGH */
640		871
…		…
691	grp->sv2 = 0;	922	grp->sv2 = 0;
692		923
693	eio_grp_cancel (grp);	924	eio_grp_cancel (grp);
694	}	925	}
695		926
696	static void ecb_cold	927	ecb_cold
		928	static void
697	create_respipe (void)	929	create_respipe (void)
698	{	930	{
699	if (s_epipe_renew (&respipe))	931	if (s_epipe_renew (&respipe))
700	croak ("IO::AIO: unable to initialize result pipe");	932	croak ("IO::AIO: unable to initialize result pipe");
701	}	933	}
…		…
735		967
736	poll_wait ();	968	poll_wait ();
737	}	969	}
738	}	970	}
739		971
740	static void ecb_cold	972	ecb_cold
		973	static void
741	reinit (void)	974	reinit (void)
742	{	975	{
743	create_respipe ();	976	create_respipe ();
744		977
745	if (eio_init (want_poll, done_poll) < 0)	978	if (eio_init (want_poll, done_poll) < 0)
746	croak ("IO::AIO: unable to initialise eio library");	979	croak ("IO::AIO: unable to initialise eio library");
747	}	980	}
748		981
749	/*****************************************************************************/	982	/*****************************************************************************/
750		983
751	#if !_POSIX_MAPPED_FILES
752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753	# define munmap(addr,length) EIO_ENOSYS ()
754	#endif
755
756	#if !_POSIX_MEMORY_PROTECTION
757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
758	#endif
759
760	#define MMAP_MAGIC PERL_MAGIC_ext
761
762	static int ecb_cold
763	mmap_free (pTHX_ SV *sv, MAGIC *mg)
764	{
765	int old_errno = errno;
766	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
767	errno = old_errno;
768
769	mg->mg_obj = 0; /* just in case */
770
771	SvREADONLY_off (sv);
772
773	if (SvPVX (sv) != mg->mg_ptr)
774	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
775
776	SvCUR_set (sv, 0);
777	SvPVX (sv) = 0;
778	SvOK_off (sv);
779
780	return 0;
781	}
782
783	static MGVTBL mmap_vtbl = {
784	0, 0, 0, 0, mmap_free
785	};
786
787	/*****************************************************************************/
788
789	static SV *	984	static SV *
790	get_cb (SV *cb_sv)	985	get_cb (SV *cb_sv)
791	{	986	{
792	SvGETMAGIC (cb_sv);	987	SvGETMAGIC (cb_sv);
793	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;	988	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
794	}	989	}
795		990
		991	ecb_noinline
796	static aio_req ecb_noinline	992	static aio_req ecb_noinline
797	dreq (SV *callback)	993	dreq (SV *callback)
798	{	994	{
799	SV *cb_cv;	995	SV *cb_cv;
800	aio_req req;	996	aio_req req;
…		…
822	SPAGAIN; \	1018	SPAGAIN; \
823	\	1019	\
824	if (GIMME_V != G_VOID) \	1020	if (GIMME_V != G_VOID) \
825	XPUSHs (req_sv (req, aio_req_stash));	1021	XPUSHs (req_sv (req, aio_req_stash));
826		1022
		1023	/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
827	ecb_inline void	1024	ecb_inline
		1025	void
828	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)	1026	req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
829	{	1027	{
830	if (expect_false (SvROK (path)))	1028	if (expect_false (SvROK (path)))
831	{	1029	{
832	SV *rv = SvRV (path);	1030	SV *rv = SvRV (path);
833	SV *wdob;	1031	SV *wdob;
…		…
858		1056
859	*pathsv = newSVsv (path);	1057	*pathsv = newSVsv (path);
860	*ptr = SvPVbyte_nolen (*pathsv);	1058	*ptr = SvPVbyte_nolen (*pathsv);
861	}	1059	}
862		1060
863	static void ecb_noinline	1061	ecb_noinline
		1062	static void
864	req_set_path1 (aio_req req, SV *path)	1063	req_set_path1 (aio_req req, SV *path)
865	{	1064	{
866	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);	1065	req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
867	}	1066	}
868		1067
869	static void ecb_noinline	1068	ecb_noinline
		1069	static void
870	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)	1070	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
871	{	1071	{
872	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;	1072	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
873		1073
874	switch (SvTYPE (rv))	1074	switch (SvTYPE (rv))
…		…
886	req_set_path1 (req, fh_or_path);	1086	req_set_path1 (req, fh_or_path);
887	break;	1087	break;
888	}	1088	}
889	}	1089	}
890		1090
		1091	/*****************************************************************************/
		1092
		1093	static void
		1094	ts_set (struct timespec *ts, NV value)
		1095	{
		1096	ts->tv_sec = value;
		1097	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1098	}
		1099
		1100	static NV
		1101	ts_get (const struct timespec *ts)
		1102	{
		1103	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1104	}
		1105
		1106	/*****************************************************************************/
		1107
		1108	/* extract a ref-to-array of strings into a temporary c style string vector */
		1109	static char **
		1110	extract_stringvec (SV *sv, const char *croakmsg)
		1111	{
		1112	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1113	croak ("%s", croakmsg);
		1114
		1115	AV *av = (AV *)SvRV (sv);
		1116	int i, nelem = av_len (av) + 1;
		1117	char **vecp = (char **)SvPVX (sv_2mortal (newSV (sizeof (char *) * (nelem + 1))));
		1118
		1119	for (i = 0; i < nelem; ++i)
		1120	{
		1121	SV **e = av_fetch (av, i, 0);
		1122
		1123	if (e && *e)
		1124	vecp[i] = SvPVbyte_nolen (*e);
		1125	else
		1126	vecp[i] = "";
		1127	}
		1128
		1129	vecp[nelem] = 0;
		1130
		1131	return vecp;
		1132	}
		1133
		1134	/*****************************************************************************/
		1135
891	XS(boot_IO__AIO) ecb_cold;	1136	XS(boot_IO__AIO) ecb_cold;
892		1137
893	MODULE = IO::AIO PACKAGE = IO::AIO	1138	MODULE = IO::AIO PACKAGE = IO::AIO
894		1139
895	PROTOTYPES: ENABLE	1140	PROTOTYPES: ENABLE
…		…
924	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)	1169	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)	1170	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)	1171	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)	1172	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)	1173	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929	const_niv (MADV_FREE , POSIX_MADV_FREE)
930		1174
931	/* the second block will be 0 when missing */	1175	/* the second block will be 0 when missing */
		1176	const_iv (O_ACCMODE)
		1177
932	const_iv (O_RDONLY)	1178	const_iv (O_RDONLY)
933	const_iv (O_WRONLY)	1179	const_iv (O_WRONLY)
934	const_iv (O_RDWR)	1180	const_iv (O_RDWR)
935	const_iv (O_CREAT)	1181	const_iv (O_CREAT)
936	const_iv (O_TRUNC)	1182	const_iv (O_TRUNC)
…		…
995	const_iv (MAP_NONBLOCK)	1241	const_iv (MAP_NONBLOCK)
996	const_iv (MAP_GROWSDOWN)	1242	const_iv (MAP_GROWSDOWN)
997	const_iv (MAP_32BIT)	1243	const_iv (MAP_32BIT)
998	const_iv (MAP_HUGETLB)	1244	const_iv (MAP_HUGETLB)
999	const_iv (MAP_STACK)	1245	const_iv (MAP_STACK)
		1246	const_iv (MAP_FIXED_NOREPLACE)
		1247	const_iv (MAP_SHARED_VALIDATE)
		1248	const_iv (MAP_SYNC)
		1249	const_iv (MAP_UNINITIALIZED)
		1250
		1251	const_iv (MREMAP_MAYMOVE)
		1252	const_iv (MREMAP_FIXED)
		1253
		1254	const_iv (MSG_CMSG_CLOEXEC)
		1255	const_iv (SOCK_CLOEXEC)
1000		1256
1001	const_iv (F_DUPFD_CLOEXEC)	1257	const_iv (F_DUPFD_CLOEXEC)
		1258
		1259	const_iv (F_ADD_SEALS)
		1260	const_iv (F_GET_SEALS)
		1261	const_iv (F_SEAL_SEAL)
		1262	const_iv (F_SEAL_SHRINK)
		1263	const_iv (F_SEAL_GROW)
		1264	const_iv (F_SEAL_WRITE)
1002		1265
1003	const_iv (F_OFD_GETLK)	1266	const_iv (F_OFD_GETLK)
1004	const_iv (F_OFD_SETLK)	1267	const_iv (F_OFD_SETLK)
1005	const_iv (F_OFD_GETLKW)	1268	const_iv (F_OFD_GETLKW)
1006		1269
…		…
1013		1276
1014	const_iv (FS_IOC_GETFLAGS)	1277	const_iv (FS_IOC_GETFLAGS)
1015	const_iv (FS_IOC_SETFLAGS)	1278	const_iv (FS_IOC_SETFLAGS)
1016	const_iv (FS_IOC_GETVERSION)	1279	const_iv (FS_IOC_GETVERSION)
1017	const_iv (FS_IOC_SETVERSION)	1280	const_iv (FS_IOC_SETVERSION)
		1281	#if HAVE_FIEMAP /* broken on musl for, like, foreever */
1018	const_iv (FS_IOC_FIEMAP)	1282	const_iv (FS_IOC_FIEMAP)
		1283	#endif
1019	const_iv (FS_IOC_FSGETXATTR)	1284	const_iv (FS_IOC_FSGETXATTR)
1020	const_iv (FS_IOC_FSSETXATTR)	1285	const_iv (FS_IOC_FSSETXATTR)
1021	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)	1286	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1022	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)	1287	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1023	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)	1288	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
…		…
1079	const_iv (SPLICE_F_MOVE)	1344	const_iv (SPLICE_F_MOVE)
1080	const_iv (SPLICE_F_NONBLOCK)	1345	const_iv (SPLICE_F_NONBLOCK)
1081	const_iv (SPLICE_F_MORE)	1346	const_iv (SPLICE_F_MORE)
1082	const_iv (SPLICE_F_GIFT)	1347	const_iv (SPLICE_F_GIFT)
1083		1348
		1349	const_iv (EFD_CLOEXEC)
		1350	const_iv (EFD_NONBLOCK)
		1351	const_iv (EFD_SEMAPHORE)
		1352
		1353	const_iv (MFD_CLOEXEC)
		1354	const_iv (MFD_ALLOW_SEALING)
		1355	const_iv (MFD_HUGETLB)
		1356	const_iv (MFD_HUGETLB_2MB)
		1357	const_iv (MFD_HUGETLB_1GB)
		1358
		1359	const_iv (CLOCK_REALTIME)
		1360	const_iv (CLOCK_MONOTONIC)
		1361	const_iv (CLOCK_BOOTTIME)
		1362	const_iv (CLOCK_REALTIME_ALARM)
		1363	const_iv (CLOCK_BOOTTIME_ALARM)
		1364
		1365	const_iv (TFD_NONBLOCK)
		1366	const_iv (TFD_CLOEXEC)
		1367
		1368	const_iv (TFD_TIMER_ABSTIME)
		1369	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1370
		1371	const_iv (STATX_TYPE)
		1372	const_iv (STATX_MODE)
		1373	const_iv (STATX_NLINK)
		1374	const_iv (STATX_UID)
		1375	const_iv (STATX_GID)
		1376	const_iv (STATX_ATIME)
		1377	const_iv (STATX_MTIME)
		1378	const_iv (STATX_CTIME)
		1379	const_iv (STATX_INO)
		1380	const_iv (STATX_SIZE)
		1381	const_iv (STATX_BLOCKS)
		1382	const_iv (STATX_BASIC_STATS)
		1383	const_iv (STATX_ALL)
		1384	const_iv (STATX_BTIME)
		1385	const_iv (STATX_ATTR_COMPRESSED)
		1386	const_iv (STATX_ATTR_IMMUTABLE)
		1387	const_iv (STATX_ATTR_APPEND)
		1388	const_iv (STATX_ATTR_NODUMP)
		1389	const_iv (STATX_ATTR_ENCRYPTED)
		1390	const_iv (STATX_ATTR_AUTOMOUNT)
		1391
		1392	const_iv (AT_FDCWD)
		1393	const_iv (AT_SYMLINK_NOFOLLOW)
		1394	const_iv (AT_EACCESS)
		1395	const_iv (AT_REMOVEDIR)
		1396	const_iv (AT_SYMLINK_FOLLOW)
		1397	const_iv (AT_NO_AUTOMOUNT)
		1398	const_iv (AT_EMPTY_PATH)
		1399	const_iv (AT_STATX_SYNC_TYPE)
		1400	const_iv (AT_STATX_AS_STAT)
		1401	const_iv (AT_STATX_FORCE_SYNC)
		1402	const_iv (AT_STATX_DONT_SYNC)
		1403	const_iv (AT_RECURSIVE)
		1404
		1405	const_iv (OPEN_TREE_CLONE)
		1406
		1407	const_iv (FSOPEN_CLOEXEC)
		1408
		1409	const_iv (FSPICK_CLOEXEC)
		1410	const_iv (FSPICK_SYMLINK_NOFOLLOW)
		1411	const_iv (FSPICK_NO_AUTOMOUNT)
		1412	const_iv (FSPICK_EMPTY_PATH)
		1413
		1414	const_iv (MOVE_MOUNT_F_SYMLINKS)
		1415	const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
		1416	const_iv (MOVE_MOUNT_F_EMPTY_PATH)
		1417	const_iv (MOVE_MOUNT_T_SYMLINKS)
		1418	const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
		1419	const_iv (MOVE_MOUNT_T_EMPTY_PATH)
		1420
		1421	/* waitid */
		1422	const_iv (P_PID)
		1423	const_iv (P_PIDFD)
		1424	const_iv (P_PGID)
		1425	const_iv (P_ALL)
		1426
		1427	const_iv (FSCONFIG_SET_FLAG)
		1428	const_iv (FSCONFIG_SET_STRING)
		1429	const_iv (FSCONFIG_SET_BINARY)
		1430	const_iv (FSCONFIG_SET_PATH)
		1431	const_iv (FSCONFIG_SET_PATH_EMPTY)
		1432	const_iv (FSCONFIG_SET_FD)
		1433	const_iv (FSCONFIG_CMD_CREATE)
		1434	const_iv (FSCONFIG_CMD_RECONFIGURE)
		1435
		1436	const_iv (MOUNT_ATTR_RDONLY)
		1437	const_iv (MOUNT_ATTR_NOSUID)
		1438	const_iv (MOUNT_ATTR_NODEV)
		1439	const_iv (MOUNT_ATTR_NOEXEC)
		1440	const_iv (MOUNT_ATTR__ATIME)
		1441	const_iv (MOUNT_ATTR_RELATIME)
		1442	const_iv (MOUNT_ATTR_NOATIME)
		1443	const_iv (MOUNT_ATTR_STRICTATIME)
		1444	const_iv (MOUNT_ATTR_NODIRATIME)
		1445
		1446	/* sys/mount.h */
		1447	const_iv (MS_RDONLY)
		1448	const_iv (MS_NOSUID)
		1449	const_iv (MS_NODEV)
		1450	const_iv (MS_NOEXEC)
		1451	const_iv (MS_SYNCHRONOUS)
		1452	const_iv (MS_REMOUNT)
		1453	const_iv (MS_MANDLOCK)
		1454	const_iv (MS_DIRSYNC)
		1455	const_iv (MS_NOATIME)
		1456	const_iv (MS_NODIRATIME)
		1457	const_iv (MS_BIND)
		1458	const_iv (MS_MOVE)
		1459	const_iv (MS_REC)
		1460	const_iv (MS_SILENT)
		1461	const_iv (MS_POSIXACL)
		1462	const_iv (MS_UNBINDABLE)
		1463	const_iv (MS_PRIVATE)
		1464	const_iv (MS_SLAVE)
		1465	const_iv (MS_SHARED)
		1466	const_iv (MS_RELATIME)
		1467	const_iv (MS_KERNMOUNT)
		1468	const_iv (MS_I_VERSION)
		1469	const_iv (MS_STRICTATIME)
		1470	const_iv (MS_LAZYTIME)
		1471	const_iv (MS_ACTIVE)
		1472	const_iv (MS_NOUSER)
		1473	const_iv (MS_RMT_MASK)
		1474	const_iv (MS_MGC_VAL)
		1475	const_iv (MS_MGC_MSK)
		1476
		1477	const_iv (MNT_FORCE)
		1478	const_iv (MNT_DETACH)
		1479	const_iv (MNT_EXPIRE)
		1480	const_iv (UMOUNT_NOFOLLOW)
		1481
		1482	const_iv (BLKROSET)
		1483	const_iv (BLKROGET)
		1484	const_iv (BLKRRPART)
		1485	const_iv (BLKGETSIZE)
		1486	const_iv (BLKFLSBUF)
		1487	const_iv (BLKRASET)
		1488	const_iv (BLKRAGET)
		1489	const_iv (BLKFRASET)
		1490	const_iv (BLKFRAGET)
		1491	const_iv (BLKSECTSET)
		1492	const_iv (BLKSECTGET)
		1493	const_iv (BLKSSZGET)
		1494	const_iv (BLKBSZGET)
		1495	const_iv (BLKBSZSET)
		1496	const_iv (BLKGETSIZE64)
		1497
1084	/* these are libeio constants, and are independent of gendef0 */	1498	/* these are libeio constants, and are independent of gendef0 */
1085	const_eio (SEEK_SET)	1499	const_eio (SEEK_SET)
1086	const_eio (SEEK_CUR)	1500	const_eio (SEEK_CUR)
1087	const_eio (SEEK_END)	1501	const_eio (SEEK_END)
1088		1502
1089	const_eio (MCL_FUTURE)	1503	const_eio (MCL_FUTURE)
1090	const_eio (MCL_CURRENT)	1504	const_eio (MCL_CURRENT)
		1505	const_eio (MCL_ONFAULT)
1091		1506
1092	const_eio (MS_ASYNC)	1507	const_eio (MS_ASYNC)
1093	const_eio (MS_INVALIDATE)	1508	const_eio (MS_INVALIDATE)
1094	const_eio (MS_SYNC)	1509	const_eio (MS_SYNC)
1095		1510
…		…
1101		1516
1102	const_eio (FALLOC_FL_KEEP_SIZE)	1517	const_eio (FALLOC_FL_KEEP_SIZE)
1103	const_eio (FALLOC_FL_PUNCH_HOLE)	1518	const_eio (FALLOC_FL_PUNCH_HOLE)
1104	const_eio (FALLOC_FL_COLLAPSE_RANGE)	1519	const_eio (FALLOC_FL_COLLAPSE_RANGE)
1105	const_eio (FALLOC_FL_ZERO_RANGE)	1520	const_eio (FALLOC_FL_ZERO_RANGE)
		1521	const_eio (FALLOC_FL_INSERT_RANGE)
		1522	const_eio (FALLOC_FL_UNSHARE_RANGE)
1106		1523
1107	const_eio (RENAME_NOREPLACE)	1524	const_eio (RENAME_NOREPLACE)
1108	const_eio (RENAME_EXCHANGE)	1525	const_eio (RENAME_EXCHANGE)
1109	const_eio (RENAME_WHITEOUT)	1526	const_eio (RENAME_WHITEOUT)
1110		1527
…		…
1132	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)	1549	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1133	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));	1550	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1134		1551
1135	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));	1552	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1136		1553
		1554	/* allocate dummy pipe fd for aio_close */
		1555	{
		1556	int pipefd [2];
		1557
		1558	if (
		1559	#ifdef _WIN32
		1560	_pipe (pipefd, 1, _O_BINARY) < 0
		1561	#else
		1562	pipe (pipefd) < 0
		1563	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1564	#endif
		1565	|| close (pipefd [1]) < 0
		1566	)
		1567	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1568
		1569	close_fd = pipefd [0];
		1570	}
		1571
1137	reinit ();	1572	reinit ();
1138	}	1573	}
1139		1574
1140	void	1575	void
1141	reinit ()	1576	reinit ()
…		…
1263		1698
1264	void	1699	void
1265	aio_close (SV *fh, SV *callback = &PL_sv_undef)	1700	aio_close (SV *fh, SV *callback = &PL_sv_undef)
1266	PPCODE:	1701	PPCODE:
1267	{	1702	{
1268	static int close_fd = -1; /* dummy fd to close fds via dup2 */
1269	int fd = s_fileno_croak (fh, 0);	1703	int fd = s_fileno_croak (fh, 0);
1270	dREQ;	1704	dREQ;
		1705	#if 0
		1706	/* partially duplicate logic in s_fileno */
		1707	SvGETMAGIC (fh);
1271		1708
1272	if (expect_false (close_fd < 0))	1709	if (SvROK (fh))
		1710	{
		1711	fh = SvRV (fh);
		1712	SvGETMAGIC (fh);
		1713	}
		1714
		1715	if (SvTYPE (fh) == SVt_PVGV)
1273	{	1716	{
1274	int pipefd [2];	1717	/* perl filehandle */
		1718	PerlIOUnix_refcnt_inc (fd);
		1719	do_close ((GV *)fh, 1);
1275		1720
1276	if (	1721	req->type = EIO_CLOSE;
1277	#ifdef _WIN32	1722	req->int1 = fd;
1278	_pipe (pipefd, 1, _O_BINARY) < 0	1723	/*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1279	#else
1280	pipe (pipefd) < 0
1281	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1282	#endif
1283	|| close (pipefd [1]) < 0
1284	)
1285	abort (); /*D*/
1286
1287	close_fd = pipefd [0];
1288	}	1724	}
1289		1725	else
		1726	#endif
		1727	{
		1728	/* fd number */
1290	req->type = EIO_DUP2;	1729	req->type = EIO_DUP2;
1291	req->int1 = close_fd;	1730	req->int1 = close_fd;
1292	req->sv2 = newSVsv (fh);	1731	req->sv2 = newSVsv (fh);
1293	req->int2 = fd;	1732	req->int2 = fd;
		1733	}
1294		1734
1295	REQ_SEND;	1735	REQ_SEND;
1296	}	1736	}
1297		1737
1298	void	1738	void
…		…
1469	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);	1909	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1470		1910
1471	REQ_SEND;	1911	REQ_SEND;
1472	}	1912	}
1473		1913
		1914	void
		1915	st_xtime ()
		1916	ALIAS:
		1917	st_atime = 0x01
		1918	st_mtime = 0x02
		1919	st_ctime = 0x04
		1920	st_btime = 0x08
		1921	st_xtime = 0x0f
		1922	PPCODE:
		1923	EXTEND (SP, 4);
		1924	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1925	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1926	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1927	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1928
		1929	void
		1930	st_xtimensec ()
		1931	ALIAS:
		1932	st_atimensec = 0x01
		1933	st_mtimensec = 0x02
		1934	st_ctimensec = 0x04
		1935	st_btimensec = 0x08
		1936	st_xtimensec = 0x0f
		1937	st_btimesec = 0x10
		1938	st_gen = 0x20
		1939	PPCODE:
		1940	EXTEND (SP, 4);
		1941	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1942	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1943	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1944	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1945	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1946	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1947
1474	UV	1948	UV
1475	major (UV dev)	1949	major (UV dev)
1476	ALIAS:	1950	ALIAS:
1477	minor = 1	1951	minor = 1
1478	CODE:	1952	CODE:
…		…
1594	eio_wd wd2 = 0;	2068	eio_wd wd2 = 0;
1595	dREQ;	2069	dREQ;
1596		2070
1597	req->type = ix;	2071	req->type = ix;
1598	req_set_path1 (req, oldpath);	2072	req_set_path1 (req, oldpath);
1599	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);	2073	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1600	req->int3 = (long)wd2;	2074	req->int3 = (long)wd2;
1601		2075
1602	REQ_SEND;	2076	REQ_SEND;
1603	}	2077	}
1604		2078
…		…
1609	eio_wd wd2 = 0;	2083	eio_wd wd2 = 0;
1610	dREQ;	2084	dREQ;
1611		2085
1612	req->type = EIO_RENAME;	2086	req->type = EIO_RENAME;
1613	req_set_path1 (req, oldpath);	2087	req_set_path1 (req, oldpath);
1614	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);	2088	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1615	req->int2 = flags;	2089	req->int2 = flags;
1616	req->int3 = (long)wd2;	2090	req->int3 = (long)wd2;
1617		2091
1618	REQ_SEND;	2092	REQ_SEND;
1619	}	2093	}
…		…
1728	req->int2 = flags;	2202	req->int2 = flags;
1729	req->int3 = SvOK (count) ? SvIV (count) : -1;	2203	req->int3 = SvOK (count) ? SvIV (count) : -1;
1730	#endif	2204	#endif
1731		2205
1732	REQ_SEND;	2206	REQ_SEND;
		2207	}
		2208
		2209	void
		2210	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		2211	PPCODE:
		2212	{
		2213	char *svptr = 0;
		2214
		2215	sv_clear_foreign (data);
		2216
		2217	if (length) /* known length, directly read into scalar */
		2218	{
		2219	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		2220	svptr = sv_grow (data, length + 1);
		2221	else if (SvCUR (data) < length)
		2222	croak ("length outside of scalar, and cannot grow");
		2223	else
		2224	svptr = SvPVbyte_nolen (data);
		2225	}
		2226
		2227	{
		2228	dREQ;
		2229
		2230	req->type = EIO_SLURP;
		2231	req_set_path1 (req, pathname);
		2232	req->offs = offset;
		2233	req->size = length;
		2234	req->sv2 = SvREFCNT_inc (data);
		2235	req->ptr2 = svptr;
		2236
		2237	if (!SvREADONLY (data))
		2238	{
		2239	SvREADONLY_on (data);
		2240	req->flags |= FLAG_SV2_RO_OFF;
		2241	}
		2242
		2243	REQ_SEND;
		2244	}
1733	}	2245	}
1734		2246
1735	void	2247	void
1736	aio_busy (double delay, SV *callback = &PL_sv_undef)	2248	aio_busy (double delay, SV *callback = &PL_sv_undef)
1737	PPCODE:	2249	PPCODE:
…		…
1874	RETVAL	2386	RETVAL
1875		2387
1876	void	2388	void
1877	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)	2389	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1878	PPCODE:	2390	PPCODE:
1879	sv_unmagic (scalar, MMAP_MAGIC);	2391	sv_clear_foreign (scalar);
1880	{	2392	{
1881	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;	2393	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1882	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);	2394	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1883	if (addr == (void *)-1)	2395	if (addr == (void *)-1)
1884	XSRETURN_NO;	2396	XSRETURN_NO;
1885		2397
1886	sv_force_normal (scalar);	2398	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
1887
1888	/* we store the length in mg_obj, as namlen is I32 :/ */
1889	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1890	->mg_obj = (SV *)length;
1891
1892	SvUPGRADE (scalar, SVt_PV); /* nop... */
1893		2399
1894	if (!(prot & PROT_WRITE))	2400	if (!(prot & PROT_WRITE))
1895	SvREADONLY_on (scalar);	2401	SvREADONLY_on (scalar);
1896		2402
1897	if (SvLEN (scalar))
1898	Safefree (SvPVX (scalar));
1899
1900	SvPVX (scalar) = (char *)addr;
1901	SvCUR_set (scalar, length);
1902	SvLEN_set (scalar, 0);
1903	SvPOK_only (scalar);
1904
1905	XSRETURN_YES;	2403	XSRETURN_YES;
1906	}	2404	}
1907		2405
1908	void	2406	void
1909	munmap (SV *scalar)	2407	munmap (SV *scalar)
1910	CODE:	2408	CODE:
1911	sv_unmagic (scalar, MMAP_MAGIC);	2409	sv_clear_foreign (scalar);
		2410
		2411	SV *
		2412	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2413	CODE:
		2414	{
		2415	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2416	void *new;
		2417
		2418	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2419	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2420
		2421	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2422
		2423	RETVAL = &PL_sv_no;
		2424
		2425	if (new != (void *)-1)
		2426	{
		2427	RETVAL = new == (void *)mg->mg_ptr
		2428	? newSVpvn ("0 but true", 10)
		2429	: &PL_sv_yes;
		2430
		2431	mg->mg_ptr = (char *)new;
		2432	mg->mg_obj = (SV *)new_length;
		2433
		2434	SvPVX (scalar) = mg->mg_ptr;
		2435	SvCUR_set (scalar, new_length);
		2436	}
		2437	}
		2438	OUTPUT:
		2439	RETVAL
1912		2440
1913	int	2441	int
1914	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)	2442	madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1915	ALIAS:	2443	ALIAS:
1916	mprotect = 1	2444	mprotect = 1
1917	CODE:	2445	CODE:
1918	{	2446	{
1919	STRLEN svlen;	2447	STRLEN svlen;
…		…
1940	}	2468	}
1941	OUTPUT:	2469	OUTPUT:
1942	RETVAL	2470	RETVAL
1943		2471
1944	int	2472	int
1945	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)	2473	munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
1946	CODE:	2474	CODE:
1947	{	2475	{
1948	STRLEN svlen;	2476	STRLEN svlen;
1949	void *addr = SvPVbyte (scalar, svlen);	2477	void *addr = SvPVbyte (scalar, svlen);
1950	size_t len = SvUV (length);	2478	size_t len = SvUV (length);
…		…
1965	#else	2493	#else
1966	RETVAL = EIO_ENOSYS ();	2494	RETVAL = EIO_ENOSYS ();
1967	#endif	2495	#endif
1968	}	2496	}
1969	OUTPUT:	2497	OUTPUT:
		2498	RETVAL
		2499
		2500	int
		2501	mlockall (int flags)
		2502	PROTOTYPE: $;
		2503	CODE:
		2504	RETVAL = eio_mlockall_sync (flags);
		2505	OUTPUT:
1970	RETVAL	2506	RETVAL
1971		2507
1972	int	2508	int
1973	munlockall ()	2509	munlockall ()
1974	CODE:	2510	CODE:
…		…
1979	#endif	2515	#endif
1980	OUTPUT:	2516	OUTPUT:
1981	RETVAL	2517	RETVAL
1982		2518
1983	int	2519	int
		2520	statx (SV8 *pathname, int flags, UV mask)
		2521	CODE:
		2522	{
		2523	/* undocumented, and might go away, and anyway, should use eio_statx */
		2524	SV *wdsv = 0;
		2525	SV *pathsv = 0;
		2526	eio_wd wd = EIO_CWD;
		2527	void *ptr;
		2528	int res;
		2529
		2530	req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
		2531	RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
		2532
		2533	SvREFCNT_dec (pathsv);
		2534	SvREFCNT_dec (wdsv);
		2535	}
		2536	OUTPUT:
		2537	RETVAL
		2538
		2539	U32
		2540	stx_mode ()
		2541	PROTOTYPE:
		2542	CODE:
		2543	#if HAVE_STATX
		2544	RETVAL = stx.stx_mode;
		2545	#else
		2546	XSRETURN_UNDEF;
		2547	#endif
		2548	OUTPUT:
		2549	RETVAL
		2550
		2551	#define STATX_OFFSET_mask statx_offsetof (stx_mask)
		2552	#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
		2553	#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
		2554	#define STATX_OFFSET_uid statx_offsetof (stx_uid)
		2555	#define STATX_OFFSET_gid statx_offsetof (stx_gid)
		2556	#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
		2557	#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
		2558	#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
		2559	#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
		2560	#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
		2561	#define STATX_OFFSET_ino statx_offsetof (stx_ino)
		2562	#define STATX_OFFSET_size statx_offsetof (stx_size)
		2563	#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
		2564	#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
		2565	#define STATX_OFFSET_atime statx_offsetof (stx_atime)
		2566	#define STATX_OFFSET_btime statx_offsetof (stx_btime)
		2567	#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
		2568	#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
		2569
		2570	U32
		2571	stx_mask ()
		2572	PROTOTYPE:
		2573	ALIAS:
		2574	stx_mask = STATX_OFFSET_mask
		2575	stx_blksize = STATX_OFFSET_blksize
		2576	stx_nlink = STATX_OFFSET_nlink
		2577	stx_uid = STATX_OFFSET_uid
		2578	stx_gid = STATX_OFFSET_gid
		2579	stx_rdev_major = STATX_OFFSET_rdev_major
		2580	stx_rdev_minor = STATX_OFFSET_rdev_minor
		2581	stx_dev_major = STATX_OFFSET_dev_major
		2582	stx_dev_minor = STATX_OFFSET_dev_minor
		2583	CODE:
		2584	#if HAVE_STATX
		2585	RETVAL = *(__u32 *)((char *)&stx + ix);
		2586	#else
		2587	XSRETURN_UNDEF;
		2588	#endif
		2589	OUTPUT:
		2590	RETVAL
		2591
		2592	VAL64
		2593	stx_attributes ()
		2594	PROTOTYPE:
		2595	ALIAS:
		2596	stx_attributes = STATX_OFFSET_attributes
		2597	stx_ino = STATX_OFFSET_ino
		2598	stx_size = STATX_OFFSET_size
		2599	stx_blocks = STATX_OFFSET_blocks
		2600	stx_attributes_mask = STATX_OFFSET_attributes_mask
		2601	CODE:
		2602	#if HAVE_STATX
		2603	RETVAL = *(__u64 *)((char *)&stx + ix);
		2604	#else
		2605	XSRETURN_UNDEF;
		2606	#endif
		2607	OUTPUT:
		2608	RETVAL
		2609
		2610	NV
		2611	stx_atime ()
		2612	PROTOTYPE:
		2613	ALIAS:
		2614	stx_atime = STATX_OFFSET_atime
		2615	stx_btime = STATX_OFFSET_btime
		2616	stx_ctime = STATX_OFFSET_ctime
		2617	stx_mtime = STATX_OFFSET_mtime
		2618	CODE:
		2619	#if HAVE_STATX
		2620	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2621	RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
		2622	#else
		2623	XSRETURN_UNDEF;
		2624	#endif
		2625	OUTPUT:
		2626	RETVAL
		2627
		2628	VAL64
		2629	stx_atimesec ()
		2630	PROTOTYPE:
		2631	ALIAS:
		2632	stx_atimesec = STATX_OFFSET_atime
		2633	stx_btimesec = STATX_OFFSET_btime
		2634	stx_ctimesec = STATX_OFFSET_ctime
		2635	stx_mtimesec = STATX_OFFSET_mtime
		2636	CODE:
		2637	#if HAVE_STATX
		2638	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2639	RETVAL = ts->tv_sec;
		2640	#else
		2641	XSRETURN_UNDEF;
		2642	#endif
		2643	OUTPUT:
		2644	RETVAL
		2645
		2646	U32
		2647	stx_atimensec ()
		2648	PROTOTYPE:
		2649	ALIAS:
		2650	stx_atimensec = STATX_OFFSET_atime
		2651	stx_btimensec = STATX_OFFSET_btime
		2652	stx_ctimensec = STATX_OFFSET_ctime
		2653	stx_mtimensec = STATX_OFFSET_mtime
		2654	CODE:
		2655	#if HAVE_STATX
		2656	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2657	RETVAL = ts->tv_nsec;
		2658	#else
		2659	RETVAL = 0;
		2660	#endif
		2661	OUTPUT:
		2662	RETVAL
		2663
		2664	void
		2665	accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
		2666	PPCODE:
		2667	{
		2668	SV *retval;
		2669	#if HAVE_ACCEPT4
		2670	socklen_t salen_ = salen ? salen + 1 : 0;
		2671
		2672	if (salen)
		2673	{
		2674	sv_upgrade (sockaddr, SVt_PV);
		2675	sv_grow (sockaddr, salen_);
		2676	}
		2677
		2678	int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
		2679
		2680	retval = newmortalFH (res, O_RDWR);
		2681
		2682	if (res >= 0 && salen > 0)
		2683	{
		2684	if (salen_ > salen + 1)
		2685	salen_ = salen + 1;
		2686
		2687	SvPOK_only (sockaddr);
		2688	SvCUR_set (sockaddr, salen_);
		2689	}
		2690	#else
		2691	errno = ENOSYS;
		2692	retval = &PL_sv_undef;
		2693	#endif
		2694	XPUSHs (retval);
		2695	}
		2696
		2697	ssize_t
1984	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)	2698	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1985	CODE:	2699	CODE:
1986	{	2700	{
1987	#if HAVE_LINUX_SPLICE	2701	#if HAVE_LINUX_SPLICE
1988	loff_t off_in_, off_out_;	2702	loff_t off_in_, off_out_;
…		…
1996	#endif	2710	#endif
1997	}	2711	}
1998	OUTPUT:	2712	OUTPUT:
1999	RETVAL	2713	RETVAL
2000		2714
2001	int	2715	ssize_t
2002	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)	2716	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2003	CODE:	2717	CODE:
2004	#if HAVE_LINUX_SPLICE	2718	#if HAVE_LINUX_SPLICE
2005	RETVAL = tee (rfh, wfh, length, flags);	2719	RETVAL = tee (rfh, wfh, length, flags);
2006	#else	2720	#else
…		…
2046	{	2760	{
2047	EXTEND (SP, 2);	2761	EXTEND (SP, 2);
2048	PUSHs (newmortalFH (fd[0], O_RDONLY));	2762	PUSHs (newmortalFH (fd[0], O_RDONLY));
2049	PUSHs (newmortalFH (fd[1], O_WRONLY));	2763	PUSHs (newmortalFH (fd[1], O_WRONLY));
2050	}	2764	}
		2765	}
		2766
		2767	void
		2768	pidfd_open (int pid, unsigned int flags = 0)
		2769	PPCODE:
		2770	{
		2771	/*GENDEF0_SYSCALL(pidfd_open,434)*/
		2772	int fd = syscall (SYS_pidfd_open, pid, flags);
		2773	XPUSHs (newmortalFH (fd, O_RDWR));
		2774	}
		2775
		2776	int
		2777	pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
		2778	PPCODE:
		2779	{
		2780	int res;
		2781	#if HAVE_SIGINFO_T
		2782	siginfo_t si = { 0 };
		2783
		2784	if (SvOK (siginfo))
		2785	{
		2786	HV *hv;
		2787	SV **svp;
		2788
		2789	if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
		2790	croak ("siginfo argument must be a hashref with 'code', 'pid', 'uid' and 'value_int' or 'value_ptr' members, caught");
		2791
		2792	hv = (HV *)SvRV (siginfo);
		2793
		2794	if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
		2795	if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
		2796	if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
		2797	if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
		2798	if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
		2799	}
		2800
		2801	/*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
		2802	res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
		2803	#else
		2804	res = (errno = ENOSYS, -1);
		2805	#endif
		2806
		2807	XPUSHs (sv_2mortal (newSViv (res)));
		2808	}
		2809
		2810	void
		2811	pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
		2812	PPCODE:
		2813	{
		2814	/*GENDEF0_SYSCALL(pidfd_getfd,438)*/
		2815	int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
		2816	XPUSHs (newmortalFH (fd, O_RDWR));
		2817	}
		2818
		2819	void
		2820	eventfd (unsigned int initval = 0, int flags = 0)
		2821	PPCODE:
		2822	{
		2823	int fd;
		2824	#if HAVE_EVENTFD
		2825	fd = eventfd (initval, flags);
		2826	#else
		2827	fd = (errno = ENOSYS, -1);
		2828	#endif
		2829
		2830	XPUSHs (newmortalFH (fd, O_RDWR));
		2831	}
		2832
		2833	void
		2834	timerfd_create (int clockid, int flags = 0)
		2835	PPCODE:
		2836	{
		2837	int fd;
		2838	#if HAVE_TIMERFD
		2839	fd = timerfd_create (clockid, flags);
		2840	#else
		2841	fd = (errno = ENOSYS, -1);
		2842	#endif
		2843
		2844	XPUSHs (newmortalFH (fd, O_RDWR));
		2845	}
		2846
		2847	void
		2848	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2849	PPCODE:
		2850	{
		2851	int fd = s_fileno_croak (fh, 0);
		2852	#if HAVE_TIMERFD
		2853	int res;
		2854	struct itimerspec its, ots;
		2855
		2856	ts_set (&its.it_interval, interval);
		2857	ts_set (&its.it_value , value);
		2858	res = timerfd_settime (fd, flags, &its, &ots);
		2859
		2860	if (!res)
		2861	{
		2862	EXTEND (SP, 2);
		2863	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2864	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2865	}
		2866	#else
		2867	errno = ENOSYS;
		2868	#endif
		2869	}
		2870
		2871	void
		2872	timerfd_gettime (SV *fh)
		2873	PPCODE:
		2874	{
		2875	int fd = s_fileno_croak (fh, 0);
		2876	#if HAVE_TIMERFD
		2877	int res;
		2878	struct itimerspec ots;
		2879	res = timerfd_gettime (fd, &ots);
		2880
		2881	if (!res)
		2882	{
		2883	EXTEND (SP, 2);
		2884	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2885	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2886	}
		2887	#else
		2888	errno = ENOSYS;
		2889	#endif
		2890	}
		2891
		2892	void
		2893	memfd_create (octet_string pathname, int flags = 0)
		2894	PPCODE:
		2895	{
		2896	int fd;
		2897	#if HAVE_MEMFD_CREATE
		2898	fd = memfd_create (pathname, flags);
		2899	#else
		2900	fd = (errno = ENOSYS, -1);
		2901	#endif
		2902
		2903	XPUSHs (newmortalFH (fd, O_RDWR));
		2904	}
		2905
		2906	int
		2907	fexecve (SV *fh, SV *args, SV *envs = &PL_sv_undef)
		2908	CODE:
		2909	{
		2910	int fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
		2911	char **envp, **argv;
		2912	argv = extract_stringvec (args, "IO::AIO::fexecve: args must be an array of strings");
		2913	if (!SvOK (envs))
		2914	{
		2915	extern char **environ;
		2916	envp = environ;
		2917	}
		2918	else
		2919	envp = extract_stringvec (envs, "IO::AIO::fexecve: envs must be an array of strings");
		2920	#if _POSIX_VERSION >= 200809L
		2921	RETVAL = fexecve (fd, argv, envp);
		2922	#else
		2923	RETVAL = (errno = ENOSYS, -1);
		2924	#endif
		2925	}
		2926	OUTPUT: RETVAL
		2927
		2928	int
		2929	mount (octet_string special, octet_string path, octet_string fstype, UV flags = 0, octet_string_ornull data = 0)
		2930	CODE:
		2931	#if HAVE_MOUNT
		2932	RETVAL = mount (special, path, fstype, flags, data);
		2933	#else
		2934	RETVAL = (errno = ENOSYS, -1);
		2935	#endif
		2936	OUTPUT: RETVAL
		2937
		2938	int
		2939	umount (octet_string path, int flags = 0)
		2940	CODE:
		2941	if (flags)
		2942	#if HAVE_UMOUNT2
		2943	RETVAL = umount2 (path, flags);
		2944	#else
		2945	RETVAL = (errno = ENOSYS, -1);
		2946	#endif
		2947	else
		2948	#if HAVE_UMOUNT
		2949	RETVAL = umount (path);
		2950	#else
		2951	RETVAL = (errno = ENOSYS, -1);
		2952	#endif
		2953	OUTPUT: RETVAL
		2954
		2955	UV
		2956	get_fdlimit ()
		2957	CODE:
		2958	#if HAVE_RLIMITS
		2959	struct rlimit rl;
		2960	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2961	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2962	#endif
		2963	XSRETURN_UNDEF;
		2964	OUTPUT:
		2965	RETVAL
		2966
		2967	void
		2968	min_fdlimit (UV limit = 0x7fffffffU)
		2969	CODE:
		2970	{
		2971	#if HAVE_RLIMITS
		2972	struct rlimit rl;
		2973	rlim_t orig_rlim_max;
		2974	UV bit;
		2975
		2976	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2977	goto fail;
		2978
		2979	if (rl.rlim_cur == RLIM_INFINITY)
		2980	XSRETURN_YES;
		2981
		2982	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2983
		2984	if (rl.rlim_cur < limit)
		2985	{
		2986	rl.rlim_cur = limit;
		2987
		2988	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2989	rl.rlim_max = rl.rlim_cur;
		2990	}
		2991
		2992	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2993	XSRETURN_YES;
		2994
		2995	if (errno == EPERM)
		2996	{
		2997	/* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2998	/* our limit overflows a system-wide limit */
		2999	/* try an adaptive algorithm, but do not lower the hardlimit */
		3000	rl.rlim_max = 0;
		3001	for (bit = 0x40000000U; bit; bit >>= 1)
		3002	{
		3003	rl.rlim_max |= bit;
		3004	rl.rlim_cur = rl.rlim_max;
		3005
		3006	/* never decrease the hard limit */
		3007	if (rl.rlim_max < orig_rlim_max)
		3008	break;
		3009
		3010	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		3011	rl.rlim_max &= ~bit; /* too high, remove bit again */
		3012	}
		3013
		3014	/* now, raise the soft limit to the max permitted */
		3015	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		3016	{
		3017	rl.rlim_cur = rl.rlim_max;
		3018	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		3019	errno = EPERM;
		3020	}
		3021	}
		3022	#endif
		3023	fail:
		3024	XSRETURN_UNDEF;
2051	}	3025	}
2052		3026
2053	void _on_next_submit (SV *cb)	3027	void _on_next_submit (SV *cb)
2054	CODE:	3028	CODE:
2055	SvREFCNT_dec (on_next_submit);	3029	SvREFCNT_dec (on_next_submit);

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