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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.211 by root, Sat Apr 7 00:50:33 2012 UTC vs.
Revision 1.261 by root, Tue Jul 24 19:32:20 2018 UTC

…		…
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		8
9	#include "schmorp.h"	9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
10		12
11	#include <stddef.h>	13	#include <stddef.h>
12	#include <stdlib.h>	14	#include <stdlib.h>
13	#include <errno.h>	15	#include <errno.h>
14	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
15	#include <sys/stat.h>	18	#include <sys/stat.h>
16	#include <limits.h>	19	#include <limits.h>
17	#include <fcntl.h>	20	#include <fcntl.h>
18	#include <sched.h>	21	#include <sched.h>
19		22
20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	23	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21	# include <sys/mman.h>	24	# include <sys/mman.h>
22	#endif	25	#endif
23		26
24	#if __linux__	27	/* the incompetent fool that created musl keeps __linux__, refuses
		28	* to implement any linux standard apis, and also has no way to test
		29	* for his broken iplementation. don't complain to me if this fails
		30	* for you.
		31	*/
		32	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
25	# include <linux/fs.h>	33	# include <linux/fs.h>
26	# ifdef FS_IOC_FIEMAP	34	# ifdef FS_IOC_FIEMAP
		35	# include <linux/types.h>
27	# include <linux/fiemap.h>	36	# include <linux/fiemap.h>
28	# define HAVE_FIEMAP 1	37	# define HAVE_FIEMAP 1
29	# endif	38	# endif
30	#endif	39	#endif
31		40
…		…
98	#define expect_false(expr) expect ((expr) != 0, 0)	107	#define expect_false(expr) expect ((expr) != 0, 0)
99	#define expect_true(expr) expect ((expr) != 0, 1)	108	#define expect_true(expr) expect ((expr) != 0, 1)
100		109
101	/*****************************************************************************/	110	/*****************************************************************************/
102		111
		112	#include "libeio/config.h"
		113
		114	#include "schmorp.h"
		115
		116	#if HAVE_EVENTFD
		117	# include <sys/eventfd.h>
		118	#endif
		119
		120	#if HAVE_TIMERFD
		121	# include <sys/timerfd.h>
		122	#endif
		123
		124	#if HAVE_RLIMITS
		125	#include <sys/time.h>
		126	#include <sys/resource.h>
		127	#endif
		128
103	typedef SV SV8; /* byte-sv, used for argument-checking */	129	typedef SV SV8; /* byte-sv, used for argument-checking */
104	typedef int aio_rfd; /* read file desriptor */	130	typedef int aio_rfd; /* read file desriptor */
105	typedef int aio_wfd; /* write file descriptor */	131	typedef int aio_wfd; /* write file descriptor */
106		132
107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;	133	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
…		…
113	STRLEN stroffset; \	139	STRLEN stroffset; \
114	SV *self;	140	SV *self;
115		141
116	#define EIO_NO_WRAPPERS 1	142	#define EIO_NO_WRAPPERS 1
117		143
118	#include "libeio/config.h"
119	#include "libeio/eio.h"	144	#include "libeio/eio.h"
120		145
121	static int req_invoke (eio_req *req);	146	static int req_invoke (eio_req *req);
122	#define EIO_FINISH(req) req_invoke (req)	147	#define EIO_FINISH(req) req_invoke (req)
123	static void req_destroy (eio_req *grp);	148	static void req_destroy (eio_req *grp);
…		…
139	# else	164	# else
140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */	165	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
141	# endif	166	# endif
142	#endif	167	#endif
143		168
144	/* defines all sorts of constants to 0 unless they are already defined */
145	#include "def0.h"
146
147	#ifndef makedev	169	#ifndef makedev
148	# define makedev(maj,min) (((maj) << 8) | (min))	170	# define makedev(maj,min) (((maj) << 8) | (min))
149	#endif	171	#endif
150	#ifndef major	172	#ifndef major
151	# define major(dev) ((dev) >> 8)	173	# define major(dev) ((dev) >> 8)
152	#endif	174	#endif
153	#ifndef minor	175	#ifndef minor
154	# define minor(dev) ((dev) & 0xff)	176	# define minor(dev) ((dev) & 0xff)
155	#endif	177	#endif
156		178
157	#ifndef PAGESIZE	179	#if PAGESIZE <= 0
158	# define PAGESIZE sysconf (_SC_PAGESIZE)	180	# define PAGESIZE sysconf (_SC_PAGESIZE)
159	#endif	181	#endif
		182
		183	/*****************************************************************************/
		184
		185	#if !_POSIX_MAPPED_FILES
		186	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		187	# define munmap(addr,length) EIO_ENOSYS ()
		188	#endif
		189
		190	#if !_POSIX_MEMORY_PROTECTION
		191	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		192	#endif
		193
		194	#if !MREMAP_MAYMOVE
		195	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		196	#endif
		197
		198	#define FOREIGN_MAGIC PERL_MAGIC_ext
		199
		200	static int ecb_cold
		201	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		202	{
		203	int old_errno = errno;
		204	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		205	errno = old_errno;
		206
		207	mg->mg_obj = 0; /* just in case */
		208
		209	SvREADONLY_off (sv);
		210
		211	if (SvPVX (sv) != mg->mg_ptr)
		212	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		213
		214	SvCUR_set (sv, 0);
		215	SvPVX (sv) = 0;
		216	SvOK_off (sv);
		217
		218	return 0;
		219	}
		220
		221	static MGVTBL mmap_vtbl = {
		222	0, 0, 0, 0, mmap_free
		223	};
		224
		225	static int ecb_cold
		226	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		227	{
		228	free (mg->mg_ptr);
		229	mg->mg_obj = 0; /* just in case */
		230
		231	SvREADONLY_off (sv);
		232
		233	if (SvPVX (sv) != mg->mg_ptr)
		234	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		235
		236	SvCUR_set (sv, 0);
		237	SvPVX (sv) = 0;
		238	SvOK_off (sv);
		239
		240	return 0;
		241	}
		242
		243	static MGVTBL sysfree_vtbl = {
		244	0, 0, 0, 0, sysfree_free
		245	};
		246
		247	/*****************************************************************************/
		248
		249	/* helper: set scalar to foreign ptr with custom free */
		250	static void
		251	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		252	{
		253	sv_force_normal (sv);
		254
		255	/* we store the length in mg_obj, as namlen is I32 :/ */
		256	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		257	->mg_obj = (SV *)length;
		258
		259	SvUPGRADE (sv, SVt_PV); /* nop... */
		260
		261	if (SvLEN (sv))
		262	Safefree (SvPVX (sv));
		263
		264	SvPVX (sv) = (char *)addr;
		265	SvCUR_set (sv, length);
		266	SvLEN_set (sv, 0);
		267	SvPOK_only (sv);
		268	}
		269
		270	static void
		271	sv_clear_foreign (SV *sv)
		272	{
		273	/* todo: iterate over magic and only free ours, but of course */
		274	/* the perl5porters will call that (correct) behaviour buggy */
		275	sv_unmagic (sv, FOREIGN_MAGIC);
		276	}
		277
		278	/*****************************************************************************/
		279
		280	/* defines all sorts of constants to 0 unless they are already defined */
		281	/* also provides const_iv_ and const_niv_ macros for them */
		282	#include "def0.h"
160		283
161	/*****************************************************************************/	284	/*****************************************************************************/
162		285
163	static void	286	static void
164	fiemap (eio_req *req)	287	fiemap (eio_req *req)
165	{	288	{
166	req->result = -1;	289	req->result = -1;
167		290
168	#if HAVE_FIEMAP	291	#if HAVE_FIEMAP
		292	/* assume some c99 */
		293	struct fiemap *fiemap = 0;
		294	size_t end_offset;
169	int count = req->int3;	295	int count = req->int3;
170		296
171	/* heuristic: first try with 64 extents if we don't know how many, */	297	req->flags |= EIO_FLAG_PTR1_FREE;
172	/* as most files have (hopefully) fewer than this many extents */	298
173	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */	299	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		300	/* increase in 3.5kb steps */
174	if (count < 0)	301	if (count < 0)
175	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */	302	count = 8;
		303
		304	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		305	errno = ENOMEM;
		306	if (!fiemap)
		307	return;
		308
		309	req->ptr1 = fiemap;
		310
		311	fiemap->fm_start = req->offs;
		312	fiemap->fm_length = req->size;
		313	fiemap->fm_flags = req->int2;
		314	fiemap->fm_extent_count = count;
		315
		316	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		317	return;
		318
		319	if (req->int3 >= 0 /* not autosizing */
		320	|| !fiemap->fm_mapped_extents /* no more extents */
		321	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		322	goto done;
		323
		324	/* else we have to loop -
		325	* it would be tempting (actually I tried that first) to just query the
		326	* number of extents needed, but linux often feels like not returning all
		327	* extents, without telling us it left any out. this complicates
		328	* this quite a bit.
		329	*/
		330
		331	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
176		332
177	for (;;)	333	for (;;)
178	{	334	{
		335	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		336	char scratch[3072];
		337	struct fiemap *incmap = (struct fiemap *)scratch;
		338
		339	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		340	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		341	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		342	incmap->fm_flags = fiemap->fm_flags;
		343	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		344
		345	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		346	return;
		347
		348	if (!incmap->fm_mapped_extents)
		349	goto done;
		350
		351	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
179	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);	352	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
180	errno = ENOMEM;	353	errno = ENOMEM;
181	if (!fiemap)	354	if (!fiemap)
182	return;	355	return;
183		356
184	req->ptr1 = fiemap;	357	req->ptr1 = fiemap;
185	req->flags |= EIO_FLAG_PTR1_FREE;
186		358
187	fiemap->fm_start = req->offs;	359	for (count = 0; count < incmap->fm_mapped_extents; ++count)
188	fiemap->fm_length = req->size;	360	{
189	fiemap->fm_flags = req->int2;	361	struct fiemap_extent *e = incmap->fm_extents + count;
190	fiemap->fm_extent_count = count;
191		362
192	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))	363	if (e->fe_logical + e->fe_length >= end_offset)
193	return;	364	goto done;
194		365
195	if (req->int3 >= 0)	366	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
196	break; /* when not autosizing we are done */
197		367
198	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)	368	if (e->fe_flags & FIEMAP_EXTENT_LAST)
199	break; /* autosizing successful, we are done */	369	goto done;
200		370
201	fiemap->fm_flags = req->int2;	371	}
202	fiemap->fm_extent_count = 0;
203
204	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
205	return;
206
207	count = fiemap->fm_mapped_extents;
208
209	free (fiemap);
210	}	372	}
211		373
		374	done:
212	req->result = 0;	375	req->result = 0;
213		376
214	#else	377	#else
215	errno = ENOSYS;	378	errno = ENOSYS;
216	#endif	379	#endif
…		…
263	}	426	}
264		427
265	static SV *	428	static SV *
266	newSVaio_wd (aio_wd wd)	429	newSVaio_wd (aio_wd wd)
267	{	430	{
268	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);	431	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
269	}	432	}
270		433
271	static aio_req	434	static aio_req
272	SvAIO_REQ (SV *sv)	435	SvAIO_REQ (SV *sv)
273	{	436	{
…		…
292	|| SvTYPE (SvRV (sv)) != SVt_PVMG	455	|| SvTYPE (SvRV (sv)) != SVt_PVMG
293	|| SvSTASH (SvRV (sv)) != aio_wd_stash)	456	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
294	croak ("IO::AIO: expected a working directory object as returned by aio_wd");	457	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
295		458
296	return (aio_wd)(long)SvIVX (SvRV (sv));	459	return (aio_wd)(long)SvIVX (SvRV (sv));
		460	}
		461
		462	static SV *
		463	newmortalFH (int fd, int flags)
		464	{
		465	if (fd < 0)
		466	return &PL_sv_undef;
		467
		468	GV *gv = (GV *)sv_newmortal ();
		469	char sym[64];
		470	int symlen;
		471
		472	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		473	gv_init (gv, aio_stash, sym, symlen, 0);
		474
		475	symlen = snprintf (
		476	sym,
		477	sizeof (sym),
		478	"%s&=%d",
		479	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		480	fd
		481	);
		482
		483	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		484	? (SV *)gv : &PL_sv_undef;
297	}	485	}
298		486
299	static void	487	static void
300	aio_grp_feed (aio_req grp)	488	aio_grp_feed (aio_req grp)
301	{	489	{
…		…
429	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));	617	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
430	}	618	}
431	break;	619	break;
432		620
433	case EIO_OPEN:	621	case EIO_OPEN:
434	{	622	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
435	/* convert fd to fh */
436	SV *fh = &PL_sv_undef;
437
438	if (req->result >= 0)
439	{
440	GV *gv = (GV *)sv_newmortal ();
441	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
442	char sym [64];
443	int symlen;
444
445	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
446	gv_init (gv, aio_stash, sym, symlen, 0);
447
448	symlen = snprintf (
449	sym,
450	sizeof (sym),
451	"%s&=%d",
452	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
453	(int)req->result
454	);
455
456	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
457	fh = (SV *)gv;
458	}
459
460	PUSHs (fh);
461	}
462	break;	623	break;
463		624
464	case EIO_STATVFS:	625	case EIO_STATVFS:
465	case EIO_FSTATVFS:	626	case EIO_FSTATVFS:
466	{	627	{
…		…
469	#ifndef _WIN32	630	#ifndef _WIN32
470	if (req->result >= 0)	631	if (req->result >= 0)
471	{	632	{
472	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);	633	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
473	HV *hv = newHV ();	634	HV *hv = newHV ();
		635	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		636	* chooses to make it a struct.
		637	*/
		638	unsigned long fsid = 0;
		639	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
474		640
475	rv = sv_2mortal (newRV_noinc ((SV *)hv));	641	rv = sv_2mortal (newRV_noinc ((SV *)hv));
476		642
477	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);	643	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
478	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);	644	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
…		…
480	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);	646	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
481	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);	647	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
482	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);	648	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
483	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);	649	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
484	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);	650	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
485	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);	651	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
486	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);	652	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
487	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);	653	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
488	}	654	}
489	#endif	655	#endif
490		656
…		…
541	SvSETMAGIC (req->sv2);	707	SvSETMAGIC (req->sv2);
542	PUSHs (sv_result);	708	PUSHs (sv_result);
543	}	709	}
544	break;	710	break;
545		711
		712	case EIO_SLURP:
		713	{
		714	if (req->result >= 0)
		715	{
		716	/* if length was originally not known, we steal the malloc'ed memory */
		717	if (req->flags & EIO_FLAG_PTR2_FREE)
		718	{
		719	req->flags &= ~EIO_FLAG_PTR2_FREE;
		720	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		721	}
		722	else
		723	{
		724	SvCUR_set (req->sv2, req->result);
		725	*SvEND (req->sv2) = 0;
		726	SvPOK_only (req->sv2);
		727	}
		728
		729	SvSETMAGIC (req->sv2);
		730	}
		731
		732	PUSHs (sv_result);
		733	}
		734	break;
		735
546	case EIO_CUSTOM:	736	case EIO_CUSTOM:
547	if (req->feed == fiemap)	737	if (req->feed == fiemap)
548	{	738	{
549	#if HAVE_FIEMAP	739	#if HAVE_FIEMAP
550	if (!req->result)	740	if (!req->result)
…		…
655	{	845	{
656	while (eio_nreqs ())	846	while (eio_nreqs ())
657	{	847	{
658	int size;	848	int size;
659		849
660	X_LOCK (reslock);	850	X_LOCK (EIO_POOL->reslock);
661	size = res_queue.size;	851	size = EIO_POOL->res_queue.size;
662	X_UNLOCK (reslock);	852	X_UNLOCK (EIO_POOL->reslock);
663		853
664	if (size)	854	if (size)
665	return;	855	return;
666		856
667	etp_maybe_start_thread ();	857	etp_maybe_start_thread (EIO_POOL);
668		858
669	s_epipe_wait (&respipe);	859	s_epipe_wait (&respipe);
670	}	860	}
671	}	861	}
672		862
…		…
693	create_respipe ();	883	create_respipe ();
694		884
695	if (eio_init (want_poll, done_poll) < 0)	885	if (eio_init (want_poll, done_poll) < 0)
696	croak ("IO::AIO: unable to initialise eio library");	886	croak ("IO::AIO: unable to initialise eio library");
697	}	887	}
698
699	/*****************************************************************************/
700
701	#if !_POSIX_MAPPED_FILES
702	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
703	# define munmap(addr,length) (errno = ENOSYS, -1)
704	#endif
705
706	#if !_POSIX_MEMORY_PROTECTION
707	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
708	# define PROT_NONE 0
709	# define PROT_WRITE 0
710	# define MAP_PRIVATE 0
711	# define MAP_SHARED 0
712	# define MAP_FIXED 0
713	#endif
714
715	#define MMAP_MAGIC PERL_MAGIC_ext
716
717	static int ecb_cold
718	mmap_free (pTHX_ SV *sv, MAGIC *mg)
719	{
720	int old_errno = errno;
721	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
722	errno = old_errno;
723
724	mg->mg_obj = 0; /* just in case */
725
726	SvREADONLY_off (sv);
727
728	if (SvPVX (sv) != mg->mg_ptr)
729	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
730
731	SvCUR_set (sv, 0);
732	SvPVX (sv) = 0;
733	SvOK_off (sv);
734
735	return 0;
736	}
737
738	static MGVTBL mmap_vtbl = {
739	0, 0, 0, 0, mmap_free
740	};
741		888
742	/*****************************************************************************/	889	/*****************************************************************************/
743		890
744	static SV *	891	static SV *
745	get_cb (SV *cb_sv)	892	get_cb (SV *cb_sv)
…		…
841	req_set_path1 (req, fh_or_path);	988	req_set_path1 (req, fh_or_path);
842	break;	989	break;
843	}	990	}
844	}	991	}
845		992
		993	/*****************************************************************************/
		994
		995	static void
		996	ts_set (struct timespec *ts, NV value)
		997	{
		998	ts->tv_sec = value;
		999	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
		1000	}
		1001
		1002	static NV
		1003	ts_get (const struct timespec *ts)
		1004	{
		1005	return ts->tv_sec + ts->tv_nsec * 1e-9;
		1006	}
		1007
		1008	/*****************************************************************************/
		1009
846	XS(boot_IO__AIO) ecb_cold;	1010	XS(boot_IO__AIO) ecb_cold;
847		1011
848	MODULE = IO::AIO PACKAGE = IO::AIO	1012	MODULE = IO::AIO PACKAGE = IO::AIO
849		1013
850	PROTOTYPES: ENABLE	1014	PROTOTYPES: ENABLE
…		…
857	} *civ, const_iv[] = {	1021	} *civ, const_iv[] = {
858	# define const_niv(name, value) { # name, (IV) value },	1022	# define const_niv(name, value) { # name, (IV) value },
859	# define const_iv(name) { # name, (IV) name },	1023	# define const_iv(name) { # name, (IV) name },
860	# define const_eio(name) { # name, (IV) EIO_ ## name },	1024	# define const_eio(name) { # name, (IV) EIO_ ## name },
861		1025
862	/* you have to re-run ./gendef0 after adding/Removing any constants here */	1026	/* you have to re-run ./gendef0 after adding/removing any constants here */
863		1027	/* the first block can be undef if missing */
864	const_iv (ENOSYS)	1028	const_iv (ENOSYS)
865	const_iv (EXDEV)	1029	const_iv (EXDEV)
866	const_iv (EBADR)	1030	const_iv (EBADR)
		1031
		1032	/* for lseek */
		1033	const_iv (SEEK_DATA)
		1034	const_iv (SEEK_HOLE)
		1035
		1036	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1037	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1038	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1039	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1040	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1041	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1042
		1043	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1044	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1045	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1046	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1047	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1048
		1049	/* the second block will be 0 when missing */
		1050	const_iv (O_ACCMODE)
867		1051
868	const_iv (O_RDONLY)	1052	const_iv (O_RDONLY)
869	const_iv (O_WRONLY)	1053	const_iv (O_WRONLY)
870	const_iv (O_RDWR)	1054	const_iv (O_RDWR)
871	const_iv (O_CREAT)	1055	const_iv (O_CREAT)
…		…
885	const_iv (O_SEARCH)	1069	const_iv (O_SEARCH)
886	const_iv (O_DIRECTORY)	1070	const_iv (O_DIRECTORY)
887	const_iv (O_DSYNC)	1071	const_iv (O_DSYNC)
888	const_iv (O_RSYNC)	1072	const_iv (O_RSYNC)
889	const_iv (O_SYNC)	1073	const_iv (O_SYNC)
		1074	const_iv (O_PATH)
		1075	const_iv (O_TMPFILE)
890	const_iv (O_TTY_INIT)	1076	const_iv (O_TTY_INIT)
891		1077
892	const_iv (S_IFIFO)	1078	const_iv (S_IFIFO)
893	const_iv (S_IFCHR)	1079	const_iv (S_IFCHR)
894	const_iv (S_IFBLK)	1080	const_iv (S_IFBLK)
…		…
896	const_iv (S_IFREG)	1082	const_iv (S_IFREG)
897	const_iv (S_IFDIR)	1083	const_iv (S_IFDIR)
898	const_iv (S_IFWHT)	1084	const_iv (S_IFWHT)
899	const_iv (S_IFSOCK)	1085	const_iv (S_IFSOCK)
900	const_iv (S_IFMT)	1086	const_iv (S_IFMT)
901
902	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
903	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
904	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
905	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
906	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
907	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
908
909	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
910	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
911	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
912	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
913	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
914		1087
915	const_iv (ST_RDONLY)	1088	const_iv (ST_RDONLY)
916	const_iv (ST_NOSUID)	1089	const_iv (ST_NOSUID)
917	const_iv (ST_NODEV)	1090	const_iv (ST_NODEV)
918	const_iv (ST_NOEXEC)	1091	const_iv (ST_NOEXEC)
…		…
928	const_iv (PROT_NONE)	1101	const_iv (PROT_NONE)
929	const_iv (PROT_EXEC)	1102	const_iv (PROT_EXEC)
930	const_iv (PROT_READ)	1103	const_iv (PROT_READ)
931	const_iv (PROT_WRITE)	1104	const_iv (PROT_WRITE)
932		1105
933	/*const_iv (MAP_FIXED)*/
934	const_iv (MAP_PRIVATE)	1106	const_iv (MAP_PRIVATE)
935	const_iv (MAP_SHARED)	1107	const_iv (MAP_SHARED)
		1108	const_iv (MAP_FIXED)
936	const_iv (MAP_ANONYMOUS)	1109	const_iv (MAP_ANONYMOUS)
937		1110
938	/* linuxish */	1111	/* linuxish */
939	const_iv (MAP_HUGETLB)
940	const_iv (MAP_LOCKED)	1112	const_iv (MAP_LOCKED)
941	const_iv (MAP_NORESERVE)	1113	const_iv (MAP_NORESERVE)
942	const_iv (MAP_POPULATE)	1114	const_iv (MAP_POPULATE)
943	const_iv (MAP_NONBLOCK)	1115	const_iv (MAP_NONBLOCK)
		1116	const_iv (MAP_GROWSDOWN)
		1117	const_iv (MAP_32BIT)
		1118	const_iv (MAP_HUGETLB)
		1119	const_iv (MAP_STACK)
		1120
		1121	const_iv (MREMAP_MAYMOVE)
		1122	const_iv (MREMAP_FIXED)
		1123
		1124	const_iv (F_DUPFD_CLOEXEC)
		1125
		1126	const_iv (MSG_CMSG_CLOEXEC)
		1127	const_iv (SOCK_CLOEXEC)
		1128
		1129	const_iv (F_OFD_GETLK)
		1130	const_iv (F_OFD_SETLK)
		1131	const_iv (F_OFD_GETLKW)
		1132
		1133	const_iv (FIFREEZE)
		1134	const_iv (FITHAW)
		1135	const_iv (FITRIM)
		1136	const_iv (FICLONE)
		1137	const_iv (FICLONERANGE)
		1138	const_iv (FIDEDUPERANGE)
		1139
		1140	const_iv (FS_IOC_GETFLAGS)
		1141	const_iv (FS_IOC_SETFLAGS)
		1142	const_iv (FS_IOC_GETVERSION)
		1143	const_iv (FS_IOC_SETVERSION)
		1144	const_iv (FS_IOC_FIEMAP)
		1145	const_iv (FS_IOC_FSGETXATTR)
		1146	const_iv (FS_IOC_FSSETXATTR)
		1147	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1148	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1149	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1150
		1151	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1152
		1153	const_iv (FS_SECRM_FL)
		1154	const_iv (FS_UNRM_FL)
		1155	const_iv (FS_COMPR_FL)
		1156	const_iv (FS_SYNC_FL)
		1157	const_iv (FS_IMMUTABLE_FL)
		1158	const_iv (FS_APPEND_FL)
		1159	const_iv (FS_NODUMP_FL)
		1160	const_iv (FS_NOATIME_FL)
		1161	const_iv (FS_DIRTY_FL)
		1162	const_iv (FS_COMPRBLK_FL)
		1163	const_iv (FS_NOCOMP_FL)
		1164	const_iv (FS_ENCRYPT_FL)
		1165	const_iv (FS_BTREE_FL)
		1166	const_iv (FS_INDEX_FL)
		1167	const_iv (FS_JOURNAL_DATA_FL)
		1168	const_iv (FS_NOTAIL_FL)
		1169	const_iv (FS_DIRSYNC_FL)
		1170	const_iv (FS_TOPDIR_FL)
		1171	const_iv (FS_FL_USER_MODIFIABLE)
		1172
		1173	const_iv (FS_XFLAG_REALTIME)
		1174	const_iv (FS_XFLAG_PREALLOC)
		1175	const_iv (FS_XFLAG_IMMUTABLE)
		1176	const_iv (FS_XFLAG_APPEND)
		1177	const_iv (FS_XFLAG_SYNC)
		1178	const_iv (FS_XFLAG_NOATIME)
		1179	const_iv (FS_XFLAG_NODUMP)
		1180	const_iv (FS_XFLAG_RTINHERIT)
		1181	const_iv (FS_XFLAG_PROJINHERIT)
		1182	const_iv (FS_XFLAG_NOSYMLINKS)
		1183	const_iv (FS_XFLAG_EXTSIZE)
		1184	const_iv (FS_XFLAG_EXTSZINHERIT)
		1185	const_iv (FS_XFLAG_NODEFRAG)
		1186	const_iv (FS_XFLAG_FILESTREAM)
		1187	const_iv (FS_XFLAG_DAX)
		1188	const_iv (FS_XFLAG_HASATTR)
944		1189
945	const_iv (FIEMAP_FLAG_SYNC)	1190	const_iv (FIEMAP_FLAG_SYNC)
946	const_iv (FIEMAP_FLAG_XATTR)	1191	const_iv (FIEMAP_FLAG_XATTR)
947	const_iv (FIEMAP_FLAGS_COMPAT)	1192	const_iv (FIEMAP_FLAGS_COMPAT)
948	const_iv (FIEMAP_EXTENT_LAST)	1193	const_iv (FIEMAP_EXTENT_LAST)
…		…
955	const_iv (FIEMAP_EXTENT_DATA_TAIL)	1200	const_iv (FIEMAP_EXTENT_DATA_TAIL)
956	const_iv (FIEMAP_EXTENT_UNWRITTEN)	1201	const_iv (FIEMAP_EXTENT_UNWRITTEN)
957	const_iv (FIEMAP_EXTENT_MERGED)	1202	const_iv (FIEMAP_EXTENT_MERGED)
958	const_iv (FIEMAP_EXTENT_SHARED)	1203	const_iv (FIEMAP_EXTENT_SHARED)
959		1204
		1205	const_iv (SPLICE_F_MOVE)
		1206	const_iv (SPLICE_F_NONBLOCK)
		1207	const_iv (SPLICE_F_MORE)
		1208	const_iv (SPLICE_F_GIFT)
		1209
		1210	const_iv (EFD_CLOEXEC)
		1211	const_iv (EFD_NONBLOCK)
		1212	const_iv (EFD_SEMAPHORE)
		1213
		1214	const_iv (CLOCK_REALTIME)
		1215	const_iv (CLOCK_MONOTONIC)
		1216	const_iv (CLOCK_BOOTTIME)
		1217	const_iv (CLOCK_REALTIME_ALARM)
		1218	const_iv (CLOCK_BOOTTIME_ALARM)
		1219
		1220	const_iv (TFD_NONBLOCK)
		1221	const_iv (TFD_CLOEXEC)
		1222
		1223	const_iv (TFD_TIMER_ABSTIME)
		1224	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1225
		1226	/* these are libeio constants, and are independent of gendef0 */
960	const_eio (SEEK_SET)	1227	const_eio (SEEK_SET)
961	const_eio (SEEK_CUR)	1228	const_eio (SEEK_CUR)
962	const_eio (SEEK_END)	1229	const_eio (SEEK_END)
963		1230
964	const_eio (MCL_FUTURE)	1231	const_eio (MCL_FUTURE)
…		…
973	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)	1240	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
974	const_eio (SYNC_FILE_RANGE_WRITE)	1241	const_eio (SYNC_FILE_RANGE_WRITE)
975	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)	1242	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
976		1243
977	const_eio (FALLOC_FL_KEEP_SIZE)	1244	const_eio (FALLOC_FL_KEEP_SIZE)
		1245	const_eio (FALLOC_FL_PUNCH_HOLE)
		1246	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1247	const_eio (FALLOC_FL_ZERO_RANGE)
		1248	const_eio (FALLOC_FL_INSERT_RANGE)
		1249	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1250
		1251	const_eio (RENAME_NOREPLACE)
		1252	const_eio (RENAME_EXCHANGE)
		1253	const_eio (RENAME_WHITEOUT)
978		1254
979	const_eio (READDIR_DENTS)	1255	const_eio (READDIR_DENTS)
980	const_eio (READDIR_DIRS_FIRST)	1256	const_eio (READDIR_DIRS_FIRST)
981	const_eio (READDIR_STAT_ORDER)	1257	const_eio (READDIR_STAT_ORDER)
982	const_eio (READDIR_FOUND_UNKNOWN)	1258	const_eio (READDIR_FOUND_UNKNOWN)
…		…
1050	PROTOTYPE: $	1326	PROTOTYPE: $
1051	CODE:	1327	CODE:
1052	max_outstanding = maxreqs;	1328	max_outstanding = maxreqs;
1053		1329
1054	void	1330	void
1055	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)	1331	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1056	PPCODE:	1332	PPCODE:
1057	{	1333	{
1058	dREQ;	1334	dREQ;
1059		1335
1060	req->type = EIO_WD_OPEN;	1336	req->type = EIO_WD_OPEN;
…		…
1062		1338
1063	REQ_SEND;	1339	REQ_SEND;
1064	}	1340	}
1065		1341
1066	void	1342	void
1067	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1343	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1068	PPCODE:	1344	PPCODE:
1069	{	1345	{
1070	dREQ;	1346	dREQ;
1071		1347
1072	req->type = EIO_OPEN;	1348	req->type = EIO_OPEN;
…		…
1076		1352
1077	REQ_SEND;	1353	REQ_SEND;
1078	}	1354	}
1079		1355
1080	void	1356	void
1081	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1357	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1082	ALIAS:	1358	ALIAS:
1083	aio_fsync = EIO_FSYNC	1359	aio_fsync = EIO_FSYNC
1084	aio_fdatasync = EIO_FDATASYNC	1360	aio_fdatasync = EIO_FDATASYNC
1085	aio_syncfs = EIO_SYNCFS	1361	aio_syncfs = EIO_SYNCFS
1086	PPCODE:	1362	PPCODE:
1087	{	1363	{
1088	int fd = s_fileno_croak (fh, 0);	1364	int fd = s_fileno_croak (fh, 0);
1089	dREQ;	1365	dREQ;
1090		1366
1091	req->type = ix;	1367	req->type = ix;
1092	req->sv1 = newSVsv (fh);	1368	req->sv1 = newSVsv (fh);
1093	req->int1 = fd;	1369	req->int1 = fd;
1094		1370
1095	REQ_SEND;	1371	REQ_SEND;
1096	}	1372	}
1097		1373
1098	void	1374	void
1099	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)	1375	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1100	PPCODE:	1376	PPCODE:
1101	{	1377	{
1102	int fd = s_fileno_croak (fh, 0);	1378	int fd = s_fileno_croak (fh, 0);
1103	dREQ;	1379	dREQ;
1104		1380
1105	req->type = EIO_SYNC_FILE_RANGE;	1381	req->type = EIO_SYNC_FILE_RANGE;
1106	req->sv1 = newSVsv (fh);	1382	req->sv1 = newSVsv (fh);
1107	req->int1 = fd;	1383	req->int1 = fd;
…		…
1111		1387
1112	REQ_SEND;	1388	REQ_SEND;
1113	}	1389	}
1114		1390
1115	void	1391	void
1116	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)	1392	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1117	PPCODE:	1393	PPCODE:
1118	{	1394	{
1119	int fd = s_fileno_croak (fh, 0);	1395	int fd = s_fileno_croak (fh, 0);
1120	dREQ;	1396	dREQ;
1121		1397
1122	req->type = EIO_FALLOCATE;	1398	req->type = EIO_FALLOCATE;
1123	req->sv1 = newSVsv (fh);	1399	req->sv1 = newSVsv (fh);
1124	req->int1 = fd;	1400	req->int1 = fd;
…		…
1128		1404
1129	REQ_SEND;	1405	REQ_SEND;
1130	}	1406	}
1131		1407
1132	void	1408	void
1133	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1409	aio_close (SV *fh, SV *callback = &PL_sv_undef)
1134	PPCODE:	1410	PPCODE:
1135	{	1411	{
1136	static int close_fd = -1; /* dummy fd to close fds via dup2 */	1412	static int close_fd = -1; /* dummy fd to close fds via dup2 */
1137	int fd = s_fileno_croak (fh, 0);	1413	int fd = s_fileno_croak (fh, 0);
1138	dREQ;	1414	dREQ;
1139		1415
1140	if (expect_false (close_fd < 0))	1416	if (expect_false (close_fd < 0))
1141	{	1417	{
1142	int pipefd [2];	1418	int pipefd [2];
…		…
1162		1438
1163	REQ_SEND;	1439	REQ_SEND;
1164	}	1440	}
1165		1441
1166	void	1442	void
1167	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)	1443	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1168	PPCODE:	1444	PPCODE:
1169	{	1445	{
1170	int fd = s_fileno_croak (fh, 0);	1446	int fd = s_fileno_croak (fh, 0);
1171	dREQ;	1447	dREQ;
1172		1448
…		…
1178		1454
1179	REQ_SEND;	1455	REQ_SEND;
1180	}	1456	}
1181		1457
1182	void	1458	void
1183	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1459	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1184	ALIAS:	1460	ALIAS:
1185	aio_read = EIO_READ	1461	aio_read = EIO_READ
1186	aio_write = EIO_WRITE	1462	aio_write = EIO_WRITE
1187	PPCODE:	1463	PPCODE:
1188	{	1464	{
…		…
1204	len = svlen - dataoffset;	1480	len = svlen - dataoffset;
1205	}	1481	}
1206	else	1482	else
1207	{	1483	{
1208	/* read: check type and grow scalar as necessary */	1484	/* read: check type and grow scalar as necessary */
1209	SvUPGRADE (data, SVt_PV);	1485	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1210	svptr = SvGROW (data, len + dataoffset + 1);	1486	svptr = sv_grow (data, len + dataoffset + 1);
		1487	else if (SvCUR (data) < len + dataoffset)
		1488	croak ("length + dataoffset outside of scalar, and cannot grow");
1211	}	1489	}
1212		1490
1213	{	1491	{
1214	dREQ;	1492	dREQ;
1215		1493
…		…
1231	REQ_SEND;	1509	REQ_SEND;
1232	}	1510	}
1233	}	1511	}
1234		1512
1235	void	1513	void
		1514	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
		1515	ALIAS:
		1516	aio_ioctl = EIO_IOCTL
		1517	aio_fcntl = EIO_FCNTL
		1518	PPCODE:
		1519	{
		1520	int fd = s_fileno_croak (fh, 0);
		1521	char *svptr;
		1522
		1523	if (SvPOK (arg) || !SvNIOK (arg))
		1524	{
		1525	STRLEN svlen;
		1526	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1527	#ifdef IOCPARM_LEN
		1528	STRLEN need = IOCPARM_LEN (request);
		1529	#else
		1530	STRLEN need = 256;
		1531	#endif
		1532
		1533	if (svlen < need)
		1534	svptr = SvGROW (arg, need);
		1535	}
		1536	else
		1537	svptr = (char *)SvIV (arg);
		1538
		1539	{
		1540	dREQ;
		1541
		1542	req->type = ix;
		1543	req->sv1 = newSVsv (fh);
		1544	req->int1 = fd;
		1545	req->int2 = (long)request;
		1546	req->sv2 = SvREFCNT_inc (arg);
		1547	req->ptr2 = svptr;
		1548
		1549	REQ_SEND;
		1550	}
		1551	}
		1552
		1553	void
1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1554	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1237	ALIAS:	1555	ALIAS:
1238	aio_readlink = EIO_READLINK	1556	aio_readlink = EIO_READLINK
1239	aio_realpath = EIO_REALPATH	1557	aio_realpath = EIO_REALPATH
1240	PPCODE:	1558	PPCODE:
1241	{	1559	{
…		…
1246		1564
1247	REQ_SEND;	1565	REQ_SEND;
1248	}	1566	}
1249		1567
1250	void	1568	void
1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)	1569	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1252	PPCODE:	1570	PPCODE:
1253	{	1571	{
1254	int ifd = s_fileno_croak (in_fh , 0);	1572	int ifd = s_fileno_croak (in_fh , 0);
1255	int ofd = s_fileno_croak (out_fh, 1);	1573	int ofd = s_fileno_croak (out_fh, 1);
1256	dREQ;	1574	dREQ;
1257		1575
1258	req->type = EIO_SENDFILE;	1576	req->type = EIO_SENDFILE;
1259	req->sv1 = newSVsv (out_fh);	1577	req->sv1 = newSVsv (out_fh);
1260	req->int1 = ofd;	1578	req->int1 = ofd;
…		…
1265		1583
1266	REQ_SEND;	1584	REQ_SEND;
1267	}	1585	}
1268		1586
1269	void	1587	void
1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)	1588	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1271	PPCODE:	1589	PPCODE:
1272	{	1590	{
1273	int fd = s_fileno_croak (fh, 0);	1591	int fd = s_fileno_croak (fh, 0);
1274	dREQ;	1592	dREQ;
1275		1593
1276	req->type = EIO_READAHEAD;	1594	req->type = EIO_READAHEAD;
1277	req->sv1 = newSVsv (fh);	1595	req->sv1 = newSVsv (fh);
1278	req->int1 = fd;	1596	req->int1 = fd;
…		…
1281		1599
1282	REQ_SEND;	1600	REQ_SEND;
1283	}	1601	}
1284		1602
1285	void	1603	void
1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1604	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1287	ALIAS:	1605	ALIAS:
1288	aio_stat = EIO_STAT	1606	aio_stat = EIO_STAT
1289	aio_lstat = EIO_LSTAT	1607	aio_lstat = EIO_LSTAT
1290	aio_statvfs = EIO_STATVFS	1608	aio_statvfs = EIO_STATVFS
1291	PPCODE:	1609	PPCODE:
…		…
1300	UV	1618	UV
1301	major (UV dev)	1619	major (UV dev)
1302	ALIAS:	1620	ALIAS:
1303	minor = 1	1621	minor = 1
1304	CODE:	1622	CODE:
1305	RETVAL = ix ? major (dev) : minor (dev);	1623	RETVAL = ix ? minor (dev) : major (dev);
1306	OUTPUT:	1624	OUTPUT:
1307	RETVAL	1625	RETVAL
1308		1626
1309	UV	1627	UV
1310	makedev (UV maj, UV min)	1628	makedev (UV maj, UV min)
…		…
1312	RETVAL = makedev (maj, min);	1630	RETVAL = makedev (maj, min);
1313	OUTPUT:	1631	OUTPUT:
1314	RETVAL	1632	RETVAL
1315		1633
1316	void	1634	void
1317	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1635	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1318	PPCODE:	1636	PPCODE:
1319	{	1637	{
1320	dREQ;	1638	dREQ;
1321		1639
1322	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1640	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
…		…
1325		1643
1326	REQ_SEND;	1644	REQ_SEND;
1327	}	1645	}
1328		1646
1329	void	1647	void
1330	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1648	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1331	PPCODE:	1649	PPCODE:
1332	{	1650	{
1333	dREQ;	1651	dREQ;
1334		1652
1335	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1653	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
…		…
1337		1655
1338	REQ_SEND;	1656	REQ_SEND;
1339	}	1657	}
1340		1658
1341	void	1659	void
1342	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1660	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1343	PPCODE:	1661	PPCODE:
1344	{	1662	{
1345	dREQ;	1663	dREQ;
1346		1664
1347	req->int2 = mode;	1665	req->int2 = mode;
…		…
1349		1667
1350	REQ_SEND;	1668	REQ_SEND;
1351	}	1669	}
1352		1670
1353	void	1671	void
1354	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1672	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1355	PPCODE:	1673	PPCODE:
1356	{	1674	{
1357	dREQ;	1675	dREQ;
1358		1676
1359	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1677	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
…		…
1362		1680
1363	REQ_SEND;	1681	REQ_SEND;
1364	}	1682	}
1365		1683
1366	void	1684	void
1367	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)	1685	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1368	PPCODE:	1686	PPCODE:
1369	{	1687	{
1370	dREQ;	1688	dREQ;
1371		1689
1372	req->type = EIO_READDIR;	1690	req->type = EIO_READDIR;
…		…
1379		1697
1380	REQ_SEND;	1698	REQ_SEND;
1381	}	1699	}
1382		1700
1383	void	1701	void
1384	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1702	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1385	PPCODE:	1703	PPCODE:
1386	{	1704	{
1387	dREQ;	1705	dREQ;
1388		1706
1389	req->type = EIO_MKDIR;	1707	req->type = EIO_MKDIR;
…		…
1392		1710
1393	REQ_SEND;	1711	REQ_SEND;
1394	}	1712	}
1395		1713
1396	void	1714	void
1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1715	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1398	ALIAS:	1716	ALIAS:
1399	aio_unlink = EIO_UNLINK	1717	aio_unlink = EIO_UNLINK
1400	aio_rmdir = EIO_RMDIR	1718	aio_rmdir = EIO_RMDIR
1401	aio_readdir = EIO_READDIR	1719	aio_readdir = EIO_READDIR
1402	PPCODE:	1720	PPCODE:
…		…
1408		1726
1409	REQ_SEND;	1727	REQ_SEND;
1410	}	1728	}
1411		1729
1412	void	1730	void
1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1731	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1414	ALIAS:	1732	ALIAS:
1415	aio_link = EIO_LINK	1733	aio_link = EIO_LINK
1416	aio_symlink = EIO_SYMLINK	1734	aio_symlink = EIO_SYMLINK
1417	aio_rename = EIO_RENAME	1735	aio_rename = EIO_RENAME
1418	PPCODE:	1736	PPCODE:
…		…
1427		1745
1428	REQ_SEND;	1746	REQ_SEND;
1429	}	1747	}
1430		1748
1431	void	1749	void
		1750	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1751	PPCODE:
		1752	{
		1753	eio_wd wd2 = 0;
		1754	dREQ;
		1755
		1756	req->type = EIO_RENAME;
		1757	req_set_path1 (req, oldpath);
		1758	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1759	req->int2 = flags;
		1760	req->int3 = (long)wd2;
		1761
		1762	REQ_SEND;
		1763	}
		1764
		1765	void
1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1766	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1433	PPCODE:	1767	PPCODE:
1434	{	1768	{
1435	dREQ;	1769	dREQ;
1436		1770
1437	req->type = EIO_MKNOD;	1771	req->type = EIO_MKNOD;
…		…
1441		1775
1442	REQ_SEND;	1776	REQ_SEND;
1443	}	1777	}
1444		1778
1445	void	1779	void
1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)	1780	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1447	ALIAS:	1781	ALIAS:
1448	aio_mtouch = EIO_MTOUCH	1782	aio_mtouch = EIO_MTOUCH
1449	aio_msync = EIO_MSYNC	1783	aio_msync = EIO_MSYNC
1450	PPCODE:	1784	PPCODE:
1451	{	1785	{
1452	STRLEN svlen;	1786	STRLEN svlen;
1453	char *svptr = SvPVbyte (data, svlen);	1787	char *svptr = SvPVbyte (data, svlen);
1454	UV len = SvUV (length);	1788	UV len = SvUV (length);
		1789
		1790	if (flags < 0)
		1791	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1455		1792
1456	if (offset < 0)	1793	if (offset < 0)
1457	offset += svlen;	1794	offset += svlen;
1458		1795
1459	if (offset < 0 || offset > svlen)	1796	if (offset < 0 || offset > svlen)
…		…
1474	REQ_SEND;	1811	REQ_SEND;
1475	}	1812	}
1476	}	1813	}
1477		1814
1478	void	1815	void
1479	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)	1816	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1480	PPCODE:	1817	PPCODE:
1481	{	1818	{
1482	STRLEN svlen;	1819	STRLEN svlen;
1483	char *svptr = SvPVbyte (data, svlen);	1820	char *svptr = SvPVbyte (data, svlen);
1484	UV len = SvUV (length);	1821	UV len = SvUV (length);
…		…
1503	REQ_SEND;	1840	REQ_SEND;
1504	}	1841	}
1505	}	1842	}
1506		1843
1507	void	1844	void
1508	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)	1845	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1509	PPCODE:	1846	PPCODE:
1510	{	1847	{
1511	dREQ;	1848	dREQ;
1512		1849
1513	req->type = EIO_MLOCKALL;	1850	req->type = EIO_MLOCKALL;
…		…
1515		1852
1516	REQ_SEND;	1853	REQ_SEND;
1517	}	1854	}
1518		1855
1519	void	1856	void
1520	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)	1857	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1521	PPCODE:	1858	PPCODE:
1522	{	1859	{
1523	int fd = s_fileno_croak (fh, 0);	1860	int fd = s_fileno_croak (fh, 0);
1524	dREQ;	1861	dREQ;
1525		1862
1526	req->type = EIO_CUSTOM;	1863	req->type = EIO_CUSTOM;
1527	req->sv1 = newSVsv (fh);	1864	req->sv1 = newSVsv (fh);
1528	req->int1 = fd;	1865	req->int1 = fd;
…		…
1538		1875
1539	REQ_SEND;	1876	REQ_SEND;
1540	}	1877	}
1541		1878
1542	void	1879	void
		1880	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1881	PPCODE:
		1882	{
		1883	char *svptr = 0;
		1884
		1885	sv_clear_foreign (data);
		1886
		1887	if (length) /* known length, directly read into scalar */
		1888	{
		1889	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1890	svptr = sv_grow (data, length + 1);
		1891	else if (SvCUR (data) < length)
		1892	croak ("length outside of scalar, and cannot grow");
		1893	else
		1894	svptr = SvPVbyte_nolen (data);
		1895	}
		1896
		1897	{
		1898	dREQ;
		1899
		1900	req->type = EIO_SLURP;
		1901	req_set_path1 (req, pathname);
		1902	req->offs = offset;
		1903	req->size = length;
		1904	req->sv2 = SvREFCNT_inc (data);
		1905	req->ptr2 = svptr;
		1906
		1907	if (!SvREADONLY (data))
		1908	{
		1909	SvREADONLY_on (data);
		1910	req->flags |= FLAG_SV2_RO_OFF;
		1911	}
		1912
		1913	REQ_SEND;
		1914	}
		1915	}
		1916
		1917	void
1543	aio_busy (double delay, SV *callback=&PL_sv_undef)	1918	aio_busy (double delay, SV *callback = &PL_sv_undef)
1544	PPCODE:	1919	PPCODE:
1545	{	1920	{
1546	dREQ;	1921	dREQ;
1547		1922
1548	req->type = EIO_BUSY;	1923	req->type = EIO_BUSY;
…		…
1550		1925
1551	REQ_SEND;	1926	REQ_SEND;
1552	}	1927	}
1553		1928
1554	void	1929	void
1555	aio_group (SV *callback=&PL_sv_undef)	1930	aio_group (SV *callback = &PL_sv_undef)
1556	PPCODE:	1931	PPCODE:
1557	{	1932	{
1558	dREQ;	1933	dREQ;
1559		1934
1560	req->type = EIO_GROUP;	1935	req->type = EIO_GROUP;
1561		1936
		1937	PUTBACK;
1562	req_submit (req);	1938	req_submit (req);
		1939	SPAGAIN;
		1940
1563	XPUSHs (req_sv (req, aio_grp_stash));	1941	XPUSHs (req_sv (req, aio_grp_stash));
1564	}	1942	}
1565		1943
1566	void	1944	void
1567	aio_nop (SV *callback=&PL_sv_undef)	1945	aio_nop (SV *callback = &PL_sv_undef)
1568	ALIAS:	1946	ALIAS:
1569	aio_nop = EIO_NOP	1947	aio_nop = EIO_NOP
1570	aio_sync = EIO_SYNC	1948	aio_sync = EIO_SYNC
1571	PPCODE:	1949	PPCODE:
1572	{	1950	{
…		…
1576		1954
1577	REQ_SEND;	1955	REQ_SEND;
1578	}	1956	}
1579		1957
1580	int	1958	int
1581	aioreq_pri (int pri = 0)	1959	aioreq_pri (int pri = NO_INIT)
1582	CODE:	1960	CODE:
1583	RETVAL = next_pri;	1961	RETVAL = next_pri;
1584	if (items > 0)	1962	if (items > 0)
1585	{	1963	{
1586	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1964	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
1676	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);	2054	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1677	OUTPUT:	2055	OUTPUT:
1678	RETVAL	2056	RETVAL
1679		2057
1680	void	2058	void
1681	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)	2059	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1682	PPCODE:	2060	PPCODE:
1683	sv_unmagic (scalar, MMAP_MAGIC);	2061	sv_clear_foreign (scalar);
1684	{	2062	{
1685	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;	2063	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1686	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);	2064	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1687	if (addr == (void *)-1)	2065	if (addr == (void *)-1)
1688	XSRETURN_NO;	2066	XSRETURN_NO;
1689		2067
1690	sv_force_normal (scalar);	2068	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
1691
1692	/* we store the length in mg_obj, as namlen is I32 :/ */
1693	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1694	->mg_obj = (SV *)length;
1695
1696	SvUPGRADE (scalar, SVt_PV); /* nop... */
1697		2069
1698	if (!(prot & PROT_WRITE))	2070	if (!(prot & PROT_WRITE))
1699	SvREADONLY_on (scalar);	2071	SvREADONLY_on (scalar);
1700		2072
1701	if (SvLEN (scalar))
1702	Safefree (SvPVX (scalar));
1703
1704	SvPVX (scalar) = (char *)addr;
1705	SvCUR_set (scalar, length);
1706	SvLEN_set (scalar, 0);
1707	SvPOK_only (scalar);
1708
1709	XSRETURN_YES;	2073	XSRETURN_YES;
1710	}	2074	}
1711		2075
1712	void	2076	void
1713	munmap (SV *scalar)	2077	munmap (SV *scalar)
1714	CODE:	2078	CODE:
1715	sv_unmagic (scalar, MMAP_MAGIC);	2079	sv_clear_foreign (scalar);
		2080
		2081	SV *
		2082	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2083	CODE:
		2084	{
		2085	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2086	void *new;
		2087
		2088	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2089	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2090
		2091	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2092
		2093	RETVAL = &PL_sv_no;
		2094
		2095	if (new != (void *)-1)
		2096	{
		2097	RETVAL = new == (void *)mg->mg_ptr
		2098	? newSVpvn ("0 but true", 10)
		2099	: &PL_sv_yes;
		2100
		2101	mg->mg_ptr = (char *)new;
		2102	mg->mg_obj = (SV *)new_length;
		2103
		2104	SvPVX (scalar) = mg->mg_ptr;
		2105	SvCUR_set (scalar, new_length);
		2106	}
		2107	}
		2108	OUTPUT:
		2109	RETVAL
1716		2110
1717	int	2111	int
1718	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)	2112	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1719	ALIAS:	2113	ALIAS:
1720	mprotect = 1	2114	mprotect = 1
1721	CODE:	2115	CODE:
1722	{	2116	{
1723	STRLEN svlen;	2117	STRLEN svlen;
1724	void *addr = SvPVbyte (scalar, svlen);	2118	void *addr = SvPVbyte (scalar, svlen);
1725	size_t len = SvUV (length);	2119	STRLEN len = SvUV (length);
1726		2120
1727	if (offset < 0)	2121	if (offset < 0)
1728	offset += svlen;	2122	offset += svlen;
1729		2123
1730	if (offset < 0 || offset > svlen)	2124	if (offset < 0 || offset > svlen)
…		…
1744	}	2138	}
1745	OUTPUT:	2139	OUTPUT:
1746	RETVAL	2140	RETVAL
1747		2141
1748	int	2142	int
1749	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)	2143	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1750	CODE:	2144	CODE:
1751	{	2145	{
1752	STRLEN svlen;	2146	STRLEN svlen;
1753	void *addr = SvPVbyte (scalar, svlen);	2147	void *addr = SvPVbyte (scalar, svlen);
1754	size_t len = SvUV (length);	2148	size_t len = SvUV (length);
1755		2149
1756	if (offset < 0)	2150	if (offset < 0)
1757	offset += svlen;	2151	offset += svlen;
1758		2152
…		…
1765	addr = (void *)(((intptr_t)addr) + offset);	2159	addr = (void *)(((intptr_t)addr) + offset);
1766	eio_page_align (&addr, &len);	2160	eio_page_align (&addr, &len);
1767	#if _POSIX_MEMLOCK_RANGE	2161	#if _POSIX_MEMLOCK_RANGE
1768	RETVAL = munlock (addr, len);	2162	RETVAL = munlock (addr, len);
1769	#else	2163	#else
1770	RETVAL = ((errno = ENOSYS), -1);	2164	RETVAL = EIO_ENOSYS ();
1771	#endif	2165	#endif
1772	}	2166	}
1773	OUTPUT:	2167	OUTPUT:
1774	RETVAL	2168	RETVAL
1775		2169
…		…
1777	munlockall ()	2171	munlockall ()
1778	CODE:	2172	CODE:
1779	#if _POSIX_MEMLOCK	2173	#if _POSIX_MEMLOCK
1780	munlockall ();	2174	munlockall ();
1781	#else	2175	#else
1782	RETVAL = -1;	2176	RETVAL = EIO_ENOSYS ();
1783	errno = ENOSYS;
1784	#endif	2177	#endif
1785	OUTPUT:	2178	OUTPUT:
1786	RETVAL	2179	RETVAL
		2180
		2181	int
		2182	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2183	CODE:
		2184	{
		2185	#if HAVE_LINUX_SPLICE
		2186	loff_t off_in_, off_out_;
		2187	RETVAL = splice (
		2188	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2189	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2190	length, flags
		2191	);
		2192	#else
		2193	RETVAL = EIO_ENOSYS ();
		2194	#endif
		2195	}
		2196	OUTPUT:
		2197	RETVAL
		2198
		2199	int
		2200	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2201	CODE:
		2202	#if HAVE_LINUX_SPLICE
		2203	RETVAL = tee (rfh, wfh, length, flags);
		2204	#else
		2205	RETVAL = EIO_ENOSYS ();
		2206	#endif
		2207	OUTPUT:
		2208	RETVAL
		2209
		2210	int
		2211	pipesize (aio_rfd rfh, int new_size = -1)
		2212	PROTOTYPE: $;$
		2213	CODE:
		2214	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2215	if (new_size >= 0)
		2216	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2217	else
		2218	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2219	#else
		2220	errno = ENOSYS;
		2221	RETVAL = -1;
		2222	#endif
		2223	OUTPUT:
		2224	RETVAL
		2225
		2226	void
		2227	pipe2 (int flags = 0)
		2228	PROTOTYPE: ;$
		2229	PPCODE:
		2230	{
		2231	int fd[2];
		2232	int res;
		2233
		2234	if (flags)
		2235	#if HAVE_PIPE2
		2236	res = pipe2 (fd, flags);
		2237	#else
		2238	res = (errno = ENOSYS, -1);
		2239	#endif
		2240	else
		2241	res = pipe (fd);
		2242
		2243	if (!res)
		2244	{
		2245	EXTEND (SP, 2);
		2246	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2247	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2248	}
		2249	}
		2250
		2251	void
		2252	eventfd (unsigned int initval = 0, int flags = 0)
		2253	PPCODE:
		2254	{
		2255	int fd;
		2256	#if HAVE_EVENTFD
		2257	fd = eventfd (initval, flags);
		2258	#else
		2259	fd = (errno = ENOSYS, -1);
		2260	#endif
		2261
		2262	XPUSHs (newmortalFH (fd, O_RDWR));
		2263	}
		2264
		2265	void
		2266	timerfd_create (int clockid, int flags = 0)
		2267	PPCODE:
		2268	{
		2269	int fd;
		2270	#if HAVE_TIMERFD
		2271	fd = timerfd_create (clockid, flags);
		2272	#else
		2273	fd = (errno = ENOSYS, -1);
		2274	#endif
		2275
		2276	XPUSHs (newmortalFH (fd, O_RDWR));
		2277	}
		2278
		2279	void
		2280	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2281	PPCODE:
		2282	{
		2283	int fd = s_fileno_croak (fh, 0);
		2284	#if HAVE_TIMERFD
		2285	int res;
		2286	struct itimerspec its, ots;
		2287
		2288	ts_set (&its.it_interval, interval);
		2289	ts_set (&its.it_value , value);
		2290	res = timerfd_settime (fd, flags, &its, &ots);
		2291
		2292	if (!res)
		2293	{
		2294	EXTEND (SP, 2);
		2295	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2296	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2297	}
		2298	#else
		2299	errno = ENOSYS;
		2300	#endif
		2301	}
		2302
		2303	void
		2304	timerfd_gettime (SV *fh)
		2305	PPCODE:
		2306	{
		2307	int fd = s_fileno_croak (fh, 0);
		2308	#if HAVE_TIMERFD
		2309	int res;
		2310	struct itimerspec ots;
		2311	res = timerfd_gettime (fd, &ots);
		2312
		2313	if (!res)
		2314	{
		2315	EXTEND (SP, 2);
		2316	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2317	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2318	}
		2319	#else
		2320	errno = ENOSYS;
		2321	#endif
		2322	}
		2323
		2324	UV
		2325	get_fdlimit ()
		2326	CODE:
		2327	#if HAVE_RLIMITS
		2328	struct rlimit rl;
		2329	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2330	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2331	#endif
		2332	XSRETURN_UNDEF;
		2333	OUTPUT:
		2334	RETVAL
		2335
		2336	void
		2337	min_fdlimit (UV limit = 0x7fffffffU)
		2338	CODE:
		2339	{
		2340	#if HAVE_RLIMITS
		2341	struct rlimit rl;
		2342	rlim_t orig_rlim_max;
		2343	UV bit;
		2344
		2345	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2346	goto fail;
		2347
		2348	if (rl.rlim_cur == RLIM_INFINITY)
		2349	XSRETURN_YES;
		2350
		2351	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2352
		2353	if (rl.rlim_cur < limit)
		2354	{
		2355	rl.rlim_cur = limit;
		2356
		2357	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2358	rl.rlim_max = rl.rlim_cur;
		2359	}
		2360
		2361	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2362	XSRETURN_YES;
		2363
		2364	if (errno == EPERM)
		2365	{
		2366	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2367	/* our limit overflows a system-wide limit */
		2368	/* try an adaptive algorithm, but do not lower the hardlimit */
		2369	rl.rlim_max = 0;
		2370	for (bit = 0x40000000U; bit; bit >>= 1)
		2371	{
		2372	rl.rlim_max |= bit;
		2373	rl.rlim_cur = rl.rlim_max;
		2374
		2375	/* nevr decrease the hard limit */
		2376	if (rl.rlim_max < orig_rlim_max)
		2377	break;
		2378
		2379	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2380	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2381	}
		2382
		2383	/* now, raise the soft limit to the max permitted */
		2384	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2385	{
		2386	rl.rlim_cur = rl.rlim_max;
		2387	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2388	errno = EPERM;
		2389	}
		2390	}
		2391	#endif
		2392	fail:
		2393	XSRETURN_UNDEF;
		2394	}
1787		2395
1788	void _on_next_submit (SV *cb)	2396	void _on_next_submit (SV *cb)
1789	CODE:	2397	CODE:
1790	SvREFCNT_dec (on_next_submit);	2398	SvREFCNT_dec (on_next_submit);
1791	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2399	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
…		…
1826	cancel (aio_req_ornot req)	2434	cancel (aio_req_ornot req)
1827	CODE:	2435	CODE:
1828	eio_cancel (req);	2436	eio_cancel (req);
1829		2437
1830	void	2438	void
1831	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2439	cb (aio_req_ornot req, SV *callback = NO_INIT)
1832	PPCODE:	2440	PPCODE:
1833	{	2441	{
1834	if (GIMME_V != G_VOID)	2442	if (GIMME_V != G_VOID)
1835	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);	2443	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1836		2444
1837	if (items > 1)	2445	if (items > 1)
1838	{	2446	{
1839	SV *cb_cv =get_cb (callback);	2447	SV *cb_cv = get_cb (callback);
1840		2448
1841	SvREFCNT_dec (req->callback);	2449	SvREFCNT_dec (req->callback);
1842	req->callback = SvREFCNT_inc (cb_cv);	2450	req->callback = SvREFCNT_inc (cb_cv);
1843	}	2451	}
1844	}	2452	}
…		…
1901	limit (aio_req grp, int limit)	2509	limit (aio_req grp, int limit)
1902	CODE:	2510	CODE:
1903	eio_grp_limit (grp, limit);	2511	eio_grp_limit (grp, limit);
1904		2512
1905	void	2513	void
1906	feed (aio_req grp, SV *callback=&PL_sv_undef)	2514	feed (aio_req grp, SV *callback = &PL_sv_undef)
1907	CODE:	2515	CODE:
1908	{	2516	{
1909	SvREFCNT_dec (grp->sv2);	2517	SvREFCNT_dec (grp->sv2);
1910	grp->sv2 = newSVsv (callback);	2518	grp->sv2 = newSVsv (callback);
1911	grp->feed = aio_grp_feed;	2519	grp->feed = aio_grp_feed;

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