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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.124 by root, Thu May 29 03:20:40 2008 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

…		…
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
18	/* perl namespace pollution */	38	/* perl namespace pollution */
19	#undef VERSION	39	#undef VERSION
20		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
21	#ifdef _WIN32	47	#ifdef _WIN32
22		48
23	# define EIO_STRUCT_DIRENT Direntry_t
24	# undef malloc
25	# undef free
26
27	// perl overrides all those nice win32 functions	49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
28	# undef open	53	#undef open
29	# undef read	54	#undef read
30	# undef write	55	#undef write
31	# undef send	56	#undef send
32	# undef recv	57	#undef recv
33	# undef stat	58	#undef stat
		59	#undef lstat
34	# undef fstat	60	#undef fstat
35	# define lstat stat
36	# undef truncate	61	#undef truncate
37	# undef ftruncate	62	#undef ftruncate
38	# undef open	63	#undef open
		64	#undef link
39	# undef close	65	#undef close
40	# undef unlink	66	#undef unlink
		67	#undef mkdir
41	# undef rmdir	68	#undef rmdir
42	# undef rename	69	#undef rename
43	# undef lseek	70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
44		80
45	# define chown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STAT struct _stati64
46	# define fchown(a,b,c) (errno = ENOSYS, -1)	82	#define EIO_STRUCT_STATI64
47	# define fchmod(a,b) (errno = ENOSYS, -1)
48	# define symlink(a,b) (errno = ENOSYS, -1)
49	# define readlink(a,b,c) (errno = ENOSYS, -1)
50	# define mknod(a,b,c) (errno = ENOSYS, -1)
51	# define truncate(a,b) (errno = ENOSYS, -1)
52	# define ftruncate(fd,o) chsize ((fd), (o))
53	# define fsync(fd) _commit (fd)
54	# define opendir(fd) (errno = ENOSYS, 0)
55	# define readdir(fd) (errno = ENOSYS, -1)
56	# define closedir(fd) (errno = ENOSYS, -1)
57	# define mkdir(a,b) mkdir (a)
58		83
59	#else	84	#else
60		85
61	# include <sys/time.h>	86	#include <sys/time.h>
62	# include <sys/select.h>	87	#include <sys/select.h>
63	# include <unistd.h>	88	#include <unistd.h>
64	# include <utime.h>	89	#include <utime.h>
65	# include <signal.h>	90	#include <signal.h>
66	# define EIO_STRUCT_DIRENT struct dirent
67		91
68	#endif
69
70	#define EIO_STRUCT_STAT Stat_t	92	#define EIO_STRUCT_STAT Stat_t
71		93
72	/* use NV for 32 bit perls as it allows larger offsets */	94	#endif
73	#if IVSIZE >= 8	95
74	# define SvVAL64 SvIV	96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
75	#else	100	#else
76	# define SvVAL64 SvNV	101	# define expect(expr,value) (expr)
77	#endif	102	#endif
78		103
79	static HV *stash;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
80	typedef SV SV8; /* byte-sv, used for argument-checking */	116	typedef SV SV8; /* byte-sv, used for argument-checking */
		117	typedef int aio_rfd; /* read file desriptor */
		118	typedef int aio_wfd; /* write file descriptor */
81		119
82	#define AIO_REQ_KLASS "IO::AIO::REQ"	120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
83	#define AIO_GRP_KLASS "IO::AIO::GRP"
84		121
85	#define EIO_REQ_MEMBERS \	122	#define EIO_REQ_MEMBERS \
86	SV *callback; \	123	SV *callback; \
87	SV *sv1, *sv2; \	124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
88	STRLEN stroffset; \	126	STRLEN stroffset; \
89	SV *self;	127	SV *self;
90		128
91	#define EIO_NO_WRAPPERS 1	129	#define EIO_NO_WRAPPERS 1
92		130
93	#include "libeio/eio.h"	131	#include "libeio/eio.h"
94		132
95	static int req_invoke (eio_req *req);	133	static int req_invoke (eio_req *req);
96	#define EIO_FINISH(req) req_invoke (req)	134	#define EIO_FINISH(req) req_invoke (req)
97	static void aio_grp_feed (eio_req *grp);
98	#define EIO_FEED(req) aio_grp_feed (req)
99	static void req_destroy (eio_req *grp);	135	static void req_destroy (eio_req *grp);
100	#define EIO_DESTROY(req) req_destroy (req)	136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
		151	# else
		152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		153	# endif
		154	#endif
		155
		156	/* defines all sorts of constants to 0 unless they are already defined */
		157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
		159
		160	#ifndef makedev
		161	# define makedev(maj,min) (((maj) << 8) | (min))
		162	#endif
		163	#ifndef major
		164	# define major(dev) ((dev) >> 8)
		165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
		169
		170	#if PAGESIZE <= 0
		171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
		173
		174	/*****************************************************************************/
		175
		176	static void
		177	fiemap (eio_req *req)
		178	{
		179	req->result = -1;
		180
		181	#if HAVE_FIEMAP
		182	/* assume some c99 */
		183	struct fiemap *fiemap = 0;
		184	size_t end_offset;
		185	int count = req->int3;
		186
		187	req->flags |= EIO_FLAG_PTR1_FREE;
		188
		189	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		190	/* increase in 3.5kb steps */
		191	if (count < 0)
		192	count = 8;
		193
		194	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		195	errno = ENOMEM;
		196	if (!fiemap)
		197	return;
		198
		199	req->ptr1 = fiemap;
		200
		201	fiemap->fm_start = req->offs;
		202	fiemap->fm_length = req->size;
		203	fiemap->fm_flags = req->int2;
		204	fiemap->fm_extent_count = count;
		205
		206	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		207	return;
		208
		209	if (req->int3 >= 0 /* not autosizing */
		210	|| !fiemap->fm_mapped_extents /* no more extents */
		211	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		212	goto done;
		213
		214	/* else we have to loop -
		215	* it would be tempting (actually I tried that first) to just query the
		216	* number of extents needed, but linux often feels like not returning all
		217	* extents, without telling us it left any out. this complicates
		218	* this quite a bit.
		219	*/
		220
		221	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		222
		223	for (;;)
		224	{
		225	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		226	char scratch[3072];
		227	struct fiemap *incmap = (struct fiemap *)scratch;
		228
		229	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		230	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		231	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		232	incmap->fm_flags = fiemap->fm_flags;
		233	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		234
		235	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		236	return;
		237
		238	if (!incmap->fm_mapped_extents)
		239	goto done;
		240
		241	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		242	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		243	errno = ENOMEM;
		244	if (!fiemap)
		245	return;
		246
		247	req->ptr1 = fiemap;
		248
		249	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		250	{
		251	struct fiemap_extent *e = incmap->fm_extents + count;
		252
		253	if (e->fe_logical + e->fe_length >= end_offset)
		254	goto done;
		255
		256	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		257
		258	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		259	goto done;
		260
		261	}
		262	}
		263
		264	done:
		265	req->result = 0;
		266
		267	#else
		268	errno = ENOSYS;
		269	#endif
		270	}
		271
		272	/*****************************************************************************/
101		273
102	enum {	274	enum {
103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	275	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
104	};	276	};
105		277
106	#include "libeio/eio.c"
107
108	typedef eio_req *aio_req;	278	typedef eio_req *aio_req;
109	typedef eio_req *aio_req_ornot;	279	typedef eio_req *aio_req_ornot;
		280	typedef eio_wd aio_wd;
110		281
111	static SV *on_next_submit;	282	static SV *on_next_submit;
112	static int next_pri = EIO_PRI_DEFAULT;	283	static int next_pri = EIO_PRI_DEFAULT;
113	static int max_outstanding;	284	static int max_outstanding;
114		285
115	static int respipe_osf [2], respipe [2] = { -1, -1 };	286	static s_epipe respipe;
116		287
117	static void req_destroy (aio_req req);	288	static void req_destroy (aio_req req);
118	static void req_cancel (aio_req req);	289	static void req_cancel (aio_req req);
119		290
120	static void want_poll (void)	291	static void
		292	want_poll (void)
121	{	293	{
122	/* write a dummy byte to the pipe so fh becomes ready */	294	/* write a dummy byte to the pipe so fh becomes ready */
123	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	295	s_epipe_signal (&respipe);
124	}	296	}
125		297
126	static void done_poll (void)	298	static void
		299	done_poll (void)
127	{	300	{
128	/* read any signals sent by the worker threads */	301	/* read any signals sent by the worker threads */
129	char buf [4];	302	s_epipe_drain (&respipe);
130	while (respipe_read (respipe [0], buf, 4) == 4)
131	;
132	}	303	}
133		304
134	/* must be called at most once */	305	/* must be called at most once */
135	static SV *req_sv (aio_req req, const char *klass)	306	static SV *
		307	req_sv (aio_req req, HV *stash)
136	{	308	{
137	if (!req->self)	309	if (!req->self)
138	{	310	{
139	req->self = (SV *)newHV ();	311	req->self = (SV *)newHV ();
140	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	312	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
141	}	313	}
142		314
143	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	315	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
144	}	316	}
145		317
146	static aio_req SvAIO_REQ (SV *sv)	318	static SV *
		319	newSVaio_wd (aio_wd wd)
		320	{
		321	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		322	}
		323
		324	static aio_req
		325	SvAIO_REQ (SV *sv)
147	{	326	{
148	MAGIC *mg;	327	MAGIC *mg;
149		328
150	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	329	if (!SvROK (sv)
		330	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		331	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		332	&& SvSTASH (SvRV (sv)) != aio_req_stash
		333	&& !sv_derived_from (sv, "IO::AIO::REQ")))
151	croak ("object of class " AIO_REQ_KLASS " expected");	334	croak ("object of class IO::AIO::REQ expected");
152		335
153	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	336	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
154		337
155	return mg ? (aio_req)mg->mg_ptr : 0;	338	return mg ? (aio_req)mg->mg_ptr : 0;
156	}	339	}
157		340
		341	static aio_wd
		342	SvAIO_WD (SV *sv)
		343	{
		344	if (!SvROK (sv)
		345	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		346	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		347	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		348
		349	return (aio_wd)(long)SvIVX (SvRV (sv));
		350	}
		351
		352	static SV *
		353	newmortalFH (int fd, int flags)
		354	{
		355	if (fd < 0)
		356	return &PL_sv_undef;
		357
		358	GV *gv = (GV *)sv_newmortal ();
		359	char sym[64];
		360	int symlen;
		361
		362	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		363	gv_init (gv, aio_stash, sym, symlen, 0);
		364
		365	symlen = snprintf (
		366	sym,
		367	sizeof (sym),
		368	"%s&=%d",
		369	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		370	fd
		371	);
		372
		373	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		374	? (SV *)gv : &PL_sv_undef;
		375	}
		376
		377	static void
158	static void aio_grp_feed (aio_req grp)	378	aio_grp_feed (aio_req grp)
159	{	379	{
160	if (grp->sv2 && SvOK (grp->sv2))	380	if (grp->sv2 && SvOK (grp->sv2))
161	{	381	{
162	dSP;	382	dSP;
163		383
164	ENTER;	384	ENTER;
165	SAVETMPS;	385	SAVETMPS;
166	PUSHMARK (SP);	386	PUSHMARK (SP);
167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	387	XPUSHs (req_sv (grp, aio_grp_stash));
168	PUTBACK;	388	PUTBACK;
169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	389	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
170	SPAGAIN;	390	SPAGAIN;
171	FREETMPS;	391	FREETMPS;
172	LEAVE;	392	LEAVE;
173	}	393	}
174	}	394	}
175		395
		396	static void
176	static void req_submit (eio_req *req)	397	req_submit (eio_req *req)
177	{	398	{
178	eio_submit (req);	399	eio_submit (req);
179		400
180	if (on_next_submit)	401	if (expect_false (on_next_submit))
181	{	402	{
182	dSP;	403	dSP;
183	SV *cb = sv_2mortal (on_next_submit);	404	SV *cb = sv_2mortal (on_next_submit);
184		405
185	on_next_submit = 0;	406	on_next_submit = 0;
…		…
188	PUTBACK;	409	PUTBACK;
189	call_sv (cb, G_DISCARD | G_EVAL);	410	call_sv (cb, G_DISCARD | G_EVAL);
190	}	411	}
191	}	412	}
192		413
		414	static int
193	static int req_invoke (eio_req *req)	415	req_invoke (eio_req *req)
194	{	416	{
195	dSP;
196
197	if (req->flags & FLAG_SV2_RO_OFF)	417	if (req->flags & FLAG_SV2_RO_OFF)
198	SvREADONLY_off (req->sv2);	418	SvREADONLY_off (req->sv2);
199		419
200	if (!EIO_CANCELLED (req) && SvOK (req->callback))	420	if (!EIO_CANCELLED (req) && req->callback)
201	{	421	{
		422	dSP;
		423	static SV *sv_result_cache; /* caches the result integer SV */
		424	SV *sv_result;
		425
202	ENTER;	426	ENTER;
203	SAVETMPS;	427	SAVETMPS;
204	PUSHMARK (SP);	428	PUSHMARK (SP);
205	EXTEND (SP, 1);	429	EXTEND (SP, 1);
206		430
		431	/* do not recreate the result IV from scratch each time */
		432	if (expect_true (sv_result_cache))
		433	{
		434	sv_result = sv_result_cache; sv_result_cache = 0;
		435	SvIV_set (sv_result, req->result);
		436	SvIOK_only (sv_result);
		437	}
		438	else
		439	{
		440	sv_result = newSViv (req->result);
		441	SvREADONLY_on (sv_result);
		442	}
		443
207	switch (req->type)	444	switch (req->type)
208	{	445	{
		446	case EIO_WD_OPEN:
		447	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		448	break;
		449
209	case EIO_READDIR:	450	case EIO_READDIR:
210	{	451	{
211	SV *rv = &PL_sv_undef;	452	SV *rv = &PL_sv_undef;
212		453
213	if (req->result >= 0)	454	if (req->result >= 0)
214	{	455	{
215	int i;	456	int i;
216	char *buf = req->ptr2;	457	char *names = (char *)req->ptr2;
		458	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
217	AV *av = newAV ();	459	AV *av = newAV ();
218		460
219	av_extend (av, req->result - 1);	461	av_extend (av, req->result - 1);
220		462
221	for (i = 0; i < req->result; ++i)	463	for (i = 0; i < req->result; ++i)
222	{	464	{
223	SV *sv = newSVpv (buf, 0);	465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
224		468
		469	if (req->int1 & EIO_READDIR_CUSTOM2)
		470	{
		471	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		472	AV *avent = newAV ();
		473
		474	av_extend (avent, 2);
		475
		476	if (!sv_type [ent->type])
		477	{
		478	sv_type [ent->type] = newSViv (ent->type);
		479	SvREADONLY_on (sv_type [ent->type]);
		480	}
		481
		482	av_store (avent, 0, namesv);
		483	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		484	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		485
		486	av_store (av, i, newRV_noinc ((SV *)avent));
		487	}
		488	else
225	av_store (av, i, sv);	489	av_store (av, i, namesv);
		490
		491	++ent;
		492	}
		493	else
		494	{
		495	SV *name = newSVpv (names, 0);
		496	av_store (av, i, name);
226	buf += SvCUR (sv) + 1;	497	names += SvCUR (name) + 1;
		498	}
227	}	499	}
228		500
229	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	rv = sv_2mortal (newRV_noinc ((SV *)av));
230	}	502	}
231		503
232	PUSHs (rv);	504	PUSHs (rv);
		505
		506	if (req->int1 & EIO_READDIR_CUSTOM1)
		507	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
233	}	508	}
234	break;	509	break;
235		510
236	case EIO_OPEN:	511	case EIO_OPEN:
		512	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		513	break;
		514
		515	case EIO_STATVFS:
		516	case EIO_FSTATVFS:
237	{	517	{
238	/* convert fd to fh */
239	SV *fh = &PL_sv_undef;	518	SV *rv = &PL_sv_undef;
240		519
		520	#ifndef _WIN32
241	if (req->result >= 0)	521	if (req->result >= 0)
242	{	522	{
		523	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
243	GV *gv = (GV *)sv_newmortal ();	524	HV *hv = newHV ();
244	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	525	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
245	char sym [64];	526	* chooses to make it a struct.
246	int symlen;
247		527	*/
248	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	528	unsigned long fsid = 0;
249	gv_init (gv, stash, sym, symlen, 0);	529	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
250		530
251	symlen = snprintf (	531	rv = sv_2mortal (newRV_noinc ((SV *)hv));
252	sym,
253	sizeof (sym),
254	"%s&=%d",
255	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
256	req->result
257	);
258		532
259	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	533	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
260	fh = (SV *)gv;	534	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		535	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		536	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		537	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		538	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		539	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		540	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		541	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		542	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		543	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
261	}	544	}
		545	#endif
262		546
263	PUSHs (fh);	547	PUSHs (rv);
264	}	548	}
		549
265	break;	550	break;
266		551
267	case EIO_GROUP:	552	case EIO_GROUP:
268	req->int1 = 2; /* mark group as finished */	553	req->int1 = 2; /* mark group as finished */
269		554
…		…
281	case EIO_NOP:	566	case EIO_NOP:
282	case EIO_BUSY:	567	case EIO_BUSY:
283	break;	568	break;
284		569
285	case EIO_READLINK:	570	case EIO_READLINK:
		571	case EIO_REALPATH:
286	if (req->result > 0)	572	if (req->result > 0)
287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	573	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
288	break;	574	break;
289		575
290	case EIO_STAT:	576	case EIO_STAT:
291	case EIO_LSTAT:	577	case EIO_LSTAT:
292	case EIO_FSTAT:	578	case EIO_FSTAT:
293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	579	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		580
294	PL_laststatval = req->result;	581	if (!(PL_laststatval = req->result))
		582	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	583	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
296	PUSHs (sv_2mortal (newSViv (req->result)));	584
		585	PUSHs (sv_result);
297	break;	586	break;
298		587
		588	case EIO_SEEK:
		589	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		590	break;
		591
299	case EIO_READ:	592	case EIO_READ:
		593	{
300	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	594	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
301	*SvEND (req->sv2) = 0;	595	*SvEND (req->sv2) = 0;
302	PUSHs (sv_2mortal (newSViv (req->result)));	596	SvPOK_only (req->sv2);
		597	SvSETMAGIC (req->sv2);
		598	PUSHs (sv_result);
		599	}
303	break;	600	break;
304		601
305	case EIO_DUP2:	602	case EIO_CUSTOM:
		603	if (req->feed == fiemap)
		604	{
		605	#if HAVE_FIEMAP
		606	if (!req->result)
		607	{
		608	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		609
		610	if (fiemap->fm_extent_count)
		611	{
		612	AV *av = newAV ();
		613	int i;
		614
		615	while (fiemap->fm_mapped_extents)
		616	{
		617	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		618	AV *ext_av = newAV ();
		619
		620	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		621	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		622	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		623	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		624
		625	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		626	}
		627
		628	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		629	}
		630	else
		631	{
		632	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		633	PUSHs (sv_result);
		634	}
		635	}
		636	#endif
		637	}
		638	else
		639	PUSHs (sv_result);
		640	break;
		641
		642	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
306	if (req->result > 0)	643	if (req->result > 0)
307	req->result = 0;	644	SvIV_set (sv_result, 0);
308	/* FALLTHROUGH */	645	/* FALLTHROUGH */
309		646
310	default:	647	default:
311	PUSHs (sv_2mortal (newSViv (req->result)));	648	PUSHs (sv_result);
312	break;	649	break;
313	}	650	}
314		651
315	errno = req->errorno;	652	errno = req->errorno;
316		653
317	PUTBACK;	654	PUTBACK;
318	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	655	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
319	SPAGAIN;	656	SPAGAIN;
320		657
		658	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		659	SvREFCNT_dec (sv_result);
		660	else
		661	sv_result_cache = sv_result;
		662
321	FREETMPS;	663	FREETMPS;
322	LEAVE;	664	LEAVE;
323		665
324	PUTBACK;	666	PUTBACK;
325	}	667	}
326		668
327	return !!SvTRUE (ERRSV);	669	return !!SvTRUE (ERRSV);
328	}	670	}
329		671
		672	static void
330	static void req_destroy (aio_req req)	673	req_destroy (aio_req req)
331	{	674	{
332	if (req->self)	675	if (req->self)
333	{	676	{
334	sv_unmagic (req->self, PERL_MAGIC_ext);	677	sv_unmagic (req->self, PERL_MAGIC_ext);
335	SvREFCNT_dec (req->self);	678	SvREFCNT_dec (req->self);
336	}	679	}
337		680
338	SvREFCNT_dec (req->sv1);	681	SvREFCNT_dec (req->sv1);
339	SvREFCNT_dec (req->sv2);	682	SvREFCNT_dec (req->sv2);
		683	SvREFCNT_dec (req->sv3);
		684	SvREFCNT_dec (req->sv4);
340	SvREFCNT_dec (req->callback);	685	SvREFCNT_dec (req->callback);
341		686
342	Safefree (req);	687	free (req);
343	}	688	}
344		689
		690	static void
345	static void req_cancel_subs (aio_req grp)	691	req_cancel_subs (aio_req grp)
346	{	692	{
347	aio_req sub;
348
349	if (grp->type != EIO_GROUP)	693	if (grp->type != EIO_GROUP)
350	return;	694	return;
351		695
352	SvREFCNT_dec (grp->sv2);	696	SvREFCNT_dec (grp->sv2);
353	grp->sv2 = 0;	697	grp->sv2 = 0;
354		698
355	eio_grp_cancel (grp);	699	eio_grp_cancel (grp);
356	}	700	}
357		701
358	#ifdef USE_SOCKETS_AS_HANDLES	702	static void ecb_cold
359	# define TO_SOCKET(x) (win32_get_osfhandle (x))	703	create_respipe (void)
360	#else	704	{
361	# define TO_SOCKET(x) (x)	705	if (s_epipe_renew (&respipe))
362	#endif	706	croak ("IO::AIO: unable to initialize result pipe");
		707	}
363		708
364	static void	709	static void
365	create_respipe (void)	710	poll_wait (void)
366	{	711	{
367	int old_readfd = respipe [0];
368
369	if (respipe [1] >= 0)
370	respipe_close (TO_SOCKET (respipe [1]));
371
372	#ifdef _WIN32
373	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
374	#else
375	if (pipe (respipe))
376	#endif
377	croak ("unable to initialize result pipe");
378
379	if (old_readfd >= 0)
380	{
381	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
382	croak ("unable to initialize result pipe(2)");
383
384	respipe_close (respipe [0]);
385	respipe [0] = old_readfd;
386	}
387
388	#ifdef _WIN32
389	int arg = 1;
390	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
391	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
392	#else
393	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
394	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
395	#endif
396	croak ("unable to initialize result pipe(3)");
397
398	respipe_osf [0] = TO_SOCKET (respipe [0]);
399	respipe_osf [1] = TO_SOCKET (respipe [1]);
400	}
401
402	static void poll_wait (void)
403	{
404	fd_set rfd;
405
406	while (eio_nreqs ())	712	while (eio_nreqs ())
407	{	713	{
408	int size;	714	int size;
409		715
410	X_LOCK (reslock);	716	X_LOCK (EIO_POOL->reslock);
411	size = res_queue.size;	717	size = EIO_POOL->res_queue.size;
412	X_UNLOCK (reslock);	718	X_UNLOCK (EIO_POOL->reslock);
413		719
414	if (size)	720	if (size)
415	return;	721	return;
416		722
417	etp_maybe_start_thread ();	723	etp_maybe_start_thread (EIO_POOL);
418		724
419	FD_ZERO (&rfd);	725	s_epipe_wait (&respipe);
420	FD_SET (respipe [0], &rfd);
421
422	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
423	}	726	}
424	}	727	}
425		728
426	static int poll_cb (void)	729	static int
		730	poll_cb (void)
427	{	731	{
428	for (;;)	732	for (;;)
429	{	733	{
430	int res = eio_poll ();	734	int res = eio_poll ();
431		735
…		…
437		741
438	poll_wait ();	742	poll_wait ();
439	}	743	}
440	}	744	}
441		745
442	static void atfork_child (void)	746	static void ecb_cold
		747	reinit (void)
443	{	748	{
444	create_respipe ();	749	create_respipe ();
		750
		751	if (eio_init (want_poll, done_poll) < 0)
		752	croak ("IO::AIO: unable to initialise eio library");
		753	}
		754
		755	/*****************************************************************************/
		756
		757	#if !_POSIX_MAPPED_FILES
		758	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		759	# define munmap(addr,length) EIO_ENOSYS ()
		760	#endif
		761
		762	#if !_POSIX_MEMORY_PROTECTION
		763	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		764	#endif
		765
		766	#define MMAP_MAGIC PERL_MAGIC_ext
		767
		768	static int ecb_cold
		769	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		770	{
		771	int old_errno = errno;
		772	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		773	errno = old_errno;
		774
		775	mg->mg_obj = 0; /* just in case */
		776
		777	SvREADONLY_off (sv);
		778
		779	if (SvPVX (sv) != mg->mg_ptr)
		780	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		781
		782	SvCUR_set (sv, 0);
		783	SvPVX (sv) = 0;
		784	SvOK_off (sv);
		785
		786	return 0;
		787	}
		788
		789	static MGVTBL mmap_vtbl = {
		790	0, 0, 0, 0, mmap_free
		791	};
		792
		793	/*****************************************************************************/
		794
		795	static SV *
		796	get_cb (SV *cb_sv)
		797	{
		798	SvGETMAGIC (cb_sv);
		799	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		800	}
		801
		802	static aio_req ecb_noinline
		803	dreq (SV *callback)
		804	{
		805	SV *cb_cv;
		806	aio_req req;
		807	int req_pri = next_pri;
		808	next_pri = EIO_PRI_DEFAULT;
		809
		810	cb_cv = get_cb (callback);
		811
		812	req = calloc (sizeof (*req), 1);
		813	if (!req)
		814	croak ("out of memory during eio_req allocation");
		815
		816	req->callback = SvREFCNT_inc (cb_cv);
		817	req->pri = req_pri;
		818
		819	return req;
445	}	820	}
446		821
447	#define dREQ \	822	#define dREQ \
448	aio_req req; \	823	aio_req req = dreq (callback); \
449	int req_pri = next_pri; \
450	next_pri = EIO_PRI_DEFAULT; \
451	\
452	if (SvOK (callback) && !SvROK (callback)) \
453	croak ("callback must be undef or of reference type"); \
454	\
455	Newz (0, req, 1, eio_req); \
456	if (!req) \
457	croak ("out of memory during eio_req allocation"); \
458	\
459	req->callback = newSVsv (callback); \
460	req->pri = req_pri
461		824
462	#define REQ_SEND \	825	#define REQ_SEND \
		826	PUTBACK; \
463	req_submit (req); \	827	req_submit (req); \
		828	SPAGAIN; \
464	\	829	\
465	if (GIMME_V != G_VOID) \	830	if (GIMME_V != G_VOID) \
466	XPUSHs (req_sv (req, AIO_REQ_KLASS));	831	XPUSHs (req_sv (req, aio_req_stash));
467		832
		833	ecb_inline void
		834	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		835	{
		836	if (expect_false (SvROK (path)))
		837	{
		838	SV *rv = SvRV (path);
		839	SV *wdob;
		840
		841	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		842	{
		843	path = AvARRAY (rv)[1];
		844	wdob = AvARRAY (rv)[0];
		845
		846	if (SvOK (wdob))
		847	{
		848	*wd = SvAIO_WD (wdob);
		849	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		850	}
		851	else
		852	*wd = EIO_INVALID_WD;
		853	}
		854	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		855	{
		856	*wd = (aio_wd)(long)SvIVX (rv);
		857	*wdsv = SvREFCNT_inc_NN (rv);
		858	*ptr = ".";
		859	return; /* path set to "." */
		860	}
		861	else
		862	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		863	}
		864
		865	*pathsv = newSVsv (path);
		866	*ptr = SvPVbyte_nolen (*pathsv);
		867	}
		868
		869	static void ecb_noinline
		870	req_set_path1 (aio_req req, SV *path)
		871	{
		872	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		873	}
		874
		875	static void ecb_noinline
		876	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		877	{
		878	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		879
		880	switch (SvTYPE (rv))
		881	{
		882	case SVt_PVIO:
		883	case SVt_PVLV:
		884	case SVt_PVGV:
		885	req->type = type_fh;
		886	req->sv1 = newSVsv (fh_or_path);
		887	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		888	break;
		889
		890	default:
		891	req->type = type_path;
		892	req_set_path1 (req, fh_or_path);
		893	break;
		894	}
		895	}
		896
		897	XS(boot_IO__AIO) ecb_cold;
		898
468	MODULE = IO::AIO PACKAGE = IO::AIO	899	MODULE = IO::AIO PACKAGE = IO::AIO
469		900
470	PROTOTYPES: ENABLE	901	PROTOTYPES: ENABLE
471		902
472	BOOT:	903	BOOT:
473	{	904	{
		905	static const struct {
		906	const char *name;
		907	IV iv;
		908	} *civ, const_iv[] = {
		909	# define const_niv(name, value) { # name, (IV) value },
		910	# define const_iv(name) { # name, (IV) name },
		911	# define const_eio(name) { # name, (IV) EIO_ ## name },
		912
		913	/* you have to re-run ./gendef0 after adding/removing any constants here */
		914	/* the first block can be undef if missing */
		915	const_iv (ENOSYS)
		916	const_iv (EXDEV)
		917	const_iv (EBADR)
		918
		919	/* for lseek */
		920	const_iv (SEEK_DATA)
		921	const_iv (SEEK_HOLE)
		922
		923	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		924	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		925	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		926	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		927	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		928	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		929
		930	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		931	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		932	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		933	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		934	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		935
		936	/* the second block will be 0 when missing */
		937	const_iv (O_RDONLY)
		938	const_iv (O_WRONLY)
		939	const_iv (O_RDWR)
		940	const_iv (O_CREAT)
		941	const_iv (O_TRUNC)
		942	const_iv (O_EXCL)
		943	const_iv (O_APPEND)
		944
		945	const_iv (O_ASYNC)
		946	const_iv (O_DIRECT)
		947	const_iv (O_NOATIME)
		948
		949	const_iv (O_CLOEXEC)
		950	const_iv (O_NOCTTY)
		951	const_iv (O_NOFOLLOW)
		952	const_iv (O_NONBLOCK)
		953	const_iv (O_EXEC)
		954	const_iv (O_SEARCH)
		955	const_iv (O_DIRECTORY)
		956	const_iv (O_DSYNC)
		957	const_iv (O_RSYNC)
		958	const_iv (O_SYNC)
		959	const_iv (O_PATH)
		960	const_iv (O_TMPFILE)
		961	const_iv (O_TTY_INIT)
		962
		963	const_iv (S_IFIFO)
		964	const_iv (S_IFCHR)
		965	const_iv (S_IFBLK)
		966	const_iv (S_IFLNK)
		967	const_iv (S_IFREG)
		968	const_iv (S_IFDIR)
		969	const_iv (S_IFWHT)
		970	const_iv (S_IFSOCK)
		971	const_iv (S_IFMT)
		972
		973	const_iv (ST_RDONLY)
		974	const_iv (ST_NOSUID)
		975	const_iv (ST_NODEV)
		976	const_iv (ST_NOEXEC)
		977	const_iv (ST_SYNCHRONOUS)
		978	const_iv (ST_MANDLOCK)
		979	const_iv (ST_WRITE)
		980	const_iv (ST_APPEND)
		981	const_iv (ST_IMMUTABLE)
		982	const_iv (ST_NOATIME)
		983	const_iv (ST_NODIRATIME)
		984	const_iv (ST_RELATIME)
		985
		986	const_iv (PROT_NONE)
		987	const_iv (PROT_EXEC)
		988	const_iv (PROT_READ)
		989	const_iv (PROT_WRITE)
		990
		991	const_iv (MAP_PRIVATE)
		992	const_iv (MAP_SHARED)
		993	const_iv (MAP_FIXED)
		994	const_iv (MAP_ANONYMOUS)
		995
		996	/* linuxish */
		997	const_iv (MAP_LOCKED)
		998	const_iv (MAP_NORESERVE)
		999	const_iv (MAP_POPULATE)
		1000	const_iv (MAP_NONBLOCK)
		1001	const_iv (MAP_GROWSDOWN)
		1002	const_iv (MAP_32BIT)
		1003	const_iv (MAP_HUGETLB)
		1004	const_iv (MAP_STACK)
		1005
		1006	const_iv (F_DUPFD_CLOEXEC)
		1007
		1008	const_iv (F_OFD_GETLK)
		1009	const_iv (F_OFD_SETLK)
		1010	const_iv (F_OFD_GETLKW)
		1011
		1012	const_iv (FIFREEZE)
		1013	const_iv (FITHAW)
		1014	const_iv (FITRIM)
		1015	const_iv (FICLONE)
		1016	const_iv (FICLONERANGE)
		1017	const_iv (FIDEDUPERANGE)
		1018
		1019	const_iv (FS_IOC_GETFLAGS)
		1020	const_iv (FS_IOC_SETFLAGS)
		1021	const_iv (FS_IOC_GETVERSION)
		1022	const_iv (FS_IOC_SETVERSION)
		1023	const_iv (FS_IOC_FIEMAP)
		1024	const_iv (FS_IOC_FSGETXATTR)
		1025	const_iv (FS_IOC_FSSETXATTR)
		1026	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1027	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1028	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1029
		1030	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1031
		1032	const_iv (FS_SECRM_FL)
		1033	const_iv (FS_UNRM_FL)
		1034	const_iv (FS_COMPR_FL)
		1035	const_iv (FS_SYNC_FL)
		1036	const_iv (FS_IMMUTABLE_FL)
		1037	const_iv (FS_APPEND_FL)
		1038	const_iv (FS_NODUMP_FL)
		1039	const_iv (FS_NOATIME_FL)
		1040	const_iv (FS_DIRTY_FL)
		1041	const_iv (FS_COMPRBLK_FL)
		1042	const_iv (FS_NOCOMP_FL)
		1043	const_iv (FS_ENCRYPT_FL)
		1044	const_iv (FS_BTREE_FL)
		1045	const_iv (FS_INDEX_FL)
		1046	const_iv (FS_JOURNAL_DATA_FL)
		1047	const_iv (FS_NOTAIL_FL)
		1048	const_iv (FS_DIRSYNC_FL)
		1049	const_iv (FS_TOPDIR_FL)
		1050	const_iv (FS_FL_USER_MODIFIABLE)
		1051
		1052	const_iv (FS_XFLAG_REALTIME)
		1053	const_iv (FS_XFLAG_PREALLOC)
		1054	const_iv (FS_XFLAG_IMMUTABLE)
		1055	const_iv (FS_XFLAG_APPEND)
		1056	const_iv (FS_XFLAG_SYNC)
		1057	const_iv (FS_XFLAG_NOATIME)
		1058	const_iv (FS_XFLAG_NODUMP)
		1059	const_iv (FS_XFLAG_RTINHERIT)
		1060	const_iv (FS_XFLAG_PROJINHERIT)
		1061	const_iv (FS_XFLAG_NOSYMLINKS)
		1062	const_iv (FS_XFLAG_EXTSIZE)
		1063	const_iv (FS_XFLAG_EXTSZINHERIT)
		1064	const_iv (FS_XFLAG_NODEFRAG)
		1065	const_iv (FS_XFLAG_FILESTREAM)
		1066	const_iv (FS_XFLAG_DAX)
		1067	const_iv (FS_XFLAG_HASATTR)
		1068
		1069	const_iv (FIEMAP_FLAG_SYNC)
		1070	const_iv (FIEMAP_FLAG_XATTR)
		1071	const_iv (FIEMAP_FLAGS_COMPAT)
		1072	const_iv (FIEMAP_EXTENT_LAST)
		1073	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1074	const_iv (FIEMAP_EXTENT_DELALLOC)
		1075	const_iv (FIEMAP_EXTENT_ENCODED)
		1076	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1077	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1078	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1079	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1080	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1081	const_iv (FIEMAP_EXTENT_MERGED)
		1082	const_iv (FIEMAP_EXTENT_SHARED)
		1083
		1084	const_iv (SPLICE_F_MOVE)
		1085	const_iv (SPLICE_F_NONBLOCK)
		1086	const_iv (SPLICE_F_MORE)
		1087	const_iv (SPLICE_F_GIFT)
		1088
		1089	/* these are libeio constants, and are independent of gendef0 */
		1090	const_eio (SEEK_SET)
		1091	const_eio (SEEK_CUR)
		1092	const_eio (SEEK_END)
		1093
		1094	const_eio (MCL_FUTURE)
		1095	const_eio (MCL_CURRENT)
		1096
		1097	const_eio (MS_ASYNC)
		1098	const_eio (MS_INVALIDATE)
		1099	const_eio (MS_SYNC)
		1100
		1101	const_eio (MT_MODIFY)
		1102
		1103	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1104	const_eio (SYNC_FILE_RANGE_WRITE)
		1105	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1106
		1107	const_eio (FALLOC_FL_KEEP_SIZE)
		1108	const_eio (FALLOC_FL_PUNCH_HOLE)
		1109	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1110	const_eio (FALLOC_FL_ZERO_RANGE)
		1111	const_eio (FALLOC_FL_INSERT_RANGE)
		1112	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1113
		1114	const_eio (RENAME_NOREPLACE)
		1115	const_eio (RENAME_EXCHANGE)
		1116	const_eio (RENAME_WHITEOUT)
		1117
		1118	const_eio (READDIR_DENTS)
		1119	const_eio (READDIR_DIRS_FIRST)
		1120	const_eio (READDIR_STAT_ORDER)
		1121	const_eio (READDIR_FOUND_UNKNOWN)
		1122
		1123	const_eio (DT_UNKNOWN)
		1124	const_eio (DT_FIFO)
		1125	const_eio (DT_CHR)
		1126	const_eio (DT_DIR)
		1127	const_eio (DT_BLK)
		1128	const_eio (DT_REG)
		1129	const_eio (DT_LNK)
		1130	const_eio (DT_SOCK)
		1131	const_eio (DT_WHT)
		1132	};
		1133
474	stash = gv_stashpv ("IO::AIO", 1);	1134	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1135	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1136	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1137	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
475		1138
476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1139	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1140	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
481	#ifndef _WIN32
482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
483	#endif
484		1141
485	create_respipe ();	1142	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
486		1143
487	if (eio_init (want_poll, done_poll) < 0)	1144	reinit ();
488	croak ("IO::AIO: unable to initialise eio library");
489
490	/* atfork child called in fifo order, so before eio's handler */
491	X_THREAD_ATFORK (0, 0, atfork_child);
492	}	1145	}
493		1146
494	void	1147	void
		1148	reinit ()
		1149	PROTOTYPE:
		1150
		1151	void
495	max_poll_reqs (int nreqs)	1152	max_poll_reqs (unsigned int nreqs)
496	PROTOTYPE: $	1153	PROTOTYPE: $
497	CODE:	1154	CODE:
498	eio_set_max_poll_reqs (nreqs);	1155	eio_set_max_poll_reqs (nreqs);
499		1156
500	void	1157	void
…		…
502	PROTOTYPE: $	1159	PROTOTYPE: $
503	CODE:	1160	CODE:
504	eio_set_max_poll_time (nseconds);	1161	eio_set_max_poll_time (nseconds);
505		1162
506	void	1163	void
507	min_parallel (int nthreads)	1164	min_parallel (unsigned int nthreads)
508	PROTOTYPE: $	1165	PROTOTYPE: $
509	CODE:	1166	CODE:
510	eio_set_min_parallel (nthreads);	1167	eio_set_min_parallel (nthreads);
511		1168
512	void	1169	void
513	max_parallel (int nthreads)	1170	max_parallel (unsigned int nthreads)
514	PROTOTYPE: $	1171	PROTOTYPE: $
515	CODE:	1172	CODE:
516	eio_set_max_parallel (nthreads);	1173	eio_set_max_parallel (nthreads);
517		1174
518	void	1175	void
519	max_idle (int nthreads)	1176	max_idle (unsigned int nthreads)
520	PROTOTYPE: $	1177	PROTOTYPE: $
521	CODE:	1178	CODE:
522	eio_set_max_idle (nthreads);	1179	eio_set_max_idle (nthreads);
523		1180
524	void	1181	void
		1182	idle_timeout (unsigned int seconds)
		1183	PROTOTYPE: $
		1184	CODE:
		1185	eio_set_idle_timeout (seconds);
		1186
		1187	void
525	max_outstanding (int maxreqs)	1188	max_outstanding (unsigned int maxreqs)
526	PROTOTYPE: $	1189	PROTOTYPE: $
527	CODE:	1190	CODE:
528	max_outstanding = maxreqs;	1191	max_outstanding = maxreqs;
529		1192
530	void	1193	void
531	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1194	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
532	PROTOTYPE: $$$;$
533	PPCODE:	1195	PPCODE:
534	{	1196	{
535	dREQ;	1197	dREQ;
536		1198
		1199	req->type = EIO_WD_OPEN;
		1200	req_set_path1 (req, pathname);
		1201
		1202	REQ_SEND;
		1203	}
		1204
		1205	void
		1206	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1207	PPCODE:
		1208	{
		1209	dREQ;
		1210
537	req->type = EIO_OPEN;	1211	req->type = EIO_OPEN;
538	req->sv1 = newSVsv (pathname);	1212	req_set_path1 (req, pathname);
539	req->ptr1 = SvPVbyte_nolen (req->sv1);
540	req->int1 = flags;	1213	req->int1 = flags;
541	req->int2 = mode;	1214	req->int2 = mode;
542		1215
543	REQ_SEND;	1216	REQ_SEND;
544	}	1217	}
545		1218
546	void	1219	void
547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1220	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
548	PROTOTYPE: $;$
549	ALIAS:	1221	ALIAS:
550	aio_fsync = EIO_FSYNC	1222	aio_fsync = EIO_FSYNC
551	aio_fdatasync = EIO_FDATASYNC	1223	aio_fdatasync = EIO_FDATASYNC
		1224	aio_syncfs = EIO_SYNCFS
552	PPCODE:	1225	PPCODE:
553	{	1226	{
		1227	int fd = s_fileno_croak (fh, 0);
554	dREQ;	1228	dREQ;
555		1229
556	req->type = ix;	1230	req->type = ix;
557	req->sv1 = newSVsv (fh);	1231	req->sv1 = newSVsv (fh);
558	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1232	req->int1 = fd;
559		1233
560	REQ_SEND (req);	1234	REQ_SEND;
561	}	1235	}
562		1236
563	void	1237	void
564	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1238	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
565	PROTOTYPE: $;$
566	PPCODE:	1239	PPCODE:
567	{	1240	{
568	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1241	int fd = s_fileno_croak (fh, 0);
569	dREQ;	1242	dREQ;
570		1243
571	if (close_pipe < 0)	1244	req->type = EIO_SYNC_FILE_RANGE;
		1245	req->sv1 = newSVsv (fh);
		1246	req->int1 = fd;
		1247	req->offs = offset;
		1248	req->size = nbytes;
		1249	req->int2 = flags;
		1250
		1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int fd = s_fileno_croak (fh, 0);
		1259	dREQ;
		1260
		1261	req->type = EIO_FALLOCATE;
		1262	req->sv1 = newSVsv (fh);
		1263	req->int1 = fd;
		1264	req->int2 = mode;
		1265	req->offs = offset;
		1266	req->size = len;
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1276	int fd = s_fileno_croak (fh, 0);
		1277	dREQ;
		1278
		1279	if (expect_false (close_fd < 0))
572	{	1280	{
573	int pipefd [2];	1281	int pipefd [2];
574		1282
		1283	if (
		1284	#ifdef _WIN32
		1285	_pipe (pipefd, 1, _O_BINARY) < 0
		1286	#else
575	if (pipe (pipefd) < 0	1287	pipe (pipefd) < 0
576	|| close (pipefd [1]) < 0
577	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1288	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1289	#endif
		1290	|| close (pipefd [1]) < 0
		1291	)
578	abort (); /*D*/	1292	abort (); /*D*/
579		1293
580	close_pipe = pipefd [0];	1294	close_fd = pipefd [0];
581	}	1295	}
582		1296
583	req->type = EIO_DUP2;	1297	req->type = EIO_DUP2;
584	req->int1 = close_pipe;	1298	req->int1 = close_fd;
585	req->sv2 = newSVsv (fh);	1299	req->sv2 = newSVsv (fh);
586	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1300	req->int2 = fd;
587		1301
588	REQ_SEND (req);	1302	REQ_SEND;
589	}	1303	}
590		1304
591	void	1305	void
		1306	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1307	PPCODE:
		1308	{
		1309	int fd = s_fileno_croak (fh, 0);
		1310	dREQ;
		1311
		1312	req->type = EIO_SEEK;
		1313	req->sv1 = newSVsv (fh);
		1314	req->int1 = fd;
		1315	req->offs = SvVAL64 (offset);
		1316	req->int2 = whence;
		1317
		1318	REQ_SEND;
		1319	}
		1320
		1321	void
592	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1322	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
593	ALIAS:	1323	ALIAS:
594	aio_read = EIO_READ	1324	aio_read = EIO_READ
595	aio_write = EIO_WRITE	1325	aio_write = EIO_WRITE
596	PROTOTYPE: $$$$$;$
597	PPCODE:	1326	PPCODE:
598	{	1327	{
599	STRLEN svlen;	1328	STRLEN svlen;
		1329	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
600	char *svptr = SvPVbyte (data, svlen);	1330	char *svptr = SvPVbyte (data, svlen);
601	UV len = SvUV (length);	1331	UV len = SvUV (length);
602
603	SvUPGRADE (data, SVt_PV);
604	SvPOK_on (data);
605		1332
606	if (dataoffset < 0)	1333	if (dataoffset < 0)
607	dataoffset += svlen;	1334	dataoffset += svlen;
608		1335
609	if (dataoffset < 0 || dataoffset > svlen)	1336	if (dataoffset < 0 || dataoffset > svlen)
…		…
615	if (!SvOK (length) || len + dataoffset > svlen)	1342	if (!SvOK (length) || len + dataoffset > svlen)
616	len = svlen - dataoffset;	1343	len = svlen - dataoffset;
617	}	1344	}
618	else	1345	else
619	{	1346	{
620	/* read: grow scalar as necessary */	1347	/* read: check type and grow scalar as necessary */
		1348	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
621	svptr = SvGROW (data, len + dataoffset + 1);	1349	svptr = sv_grow (data, len + dataoffset + 1);
		1350	else if (SvCUR (data) < len + dataoffset)
		1351	croak ("length + dataoffset outside of scalar, and cannot grow");
622	}	1352	}
623
624	if (len < 0)
625	croak ("length must not be negative");
626		1353
627	{	1354	{
628	dREQ;	1355	dREQ;
629		1356
630	req->type = ix;	1357	req->type = ix;
631	req->sv1 = newSVsv (fh);	1358	req->sv1 = newSVsv (fh);
632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))	1359	req->int1 = fd;
633	: IoOFP (sv_2io (fh)));
634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1360	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
635	req->size = len;	1361	req->size = len;
636	req->sv2 = SvREFCNT_inc (data);	1362	req->sv2 = SvREFCNT_inc (data);
637	req->ptr2 = (char *)svptr + dataoffset;	1363	req->ptr2 = (char *)svptr + dataoffset;
638	req->stroffset = dataoffset;	1364	req->stroffset = dataoffset;
…		…
646	REQ_SEND;	1372	REQ_SEND;
647	}	1373	}
648	}	1374	}
649		1375
650	void	1376	void
651	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1377	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
652	PROTOTYPE: $$;$	1378	ALIAS:
		1379	aio_ioctl = EIO_IOCTL
		1380	aio_fcntl = EIO_FCNTL
653	PPCODE:	1381	PPCODE:
654	{	1382	{
655	SV *data;	1383	int fd = s_fileno_croak (fh, 0);
		1384	char *svptr;
		1385
		1386	if (SvPOK (arg) || !SvNIOK (arg))
		1387	{
		1388	STRLEN svlen;
		1389	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1390	#ifdef IOCPARM_LEN
		1391	STRLEN need = IOCPARM_LEN (request);
		1392	#else
		1393	STRLEN need = 256;
		1394	#endif
		1395
		1396	if (svlen < need)
		1397	svptr = SvGROW (arg, need);
		1398	}
		1399	else
		1400	svptr = (char *)SvIV (arg);
		1401
		1402	{
		1403	dREQ;
		1404
		1405	req->type = ix;
		1406	req->sv1 = newSVsv (fh);
		1407	req->int1 = fd;
		1408	req->int2 = (long)request;
		1409	req->sv2 = SvREFCNT_inc (arg);
		1410	req->ptr2 = svptr;
		1411
		1412	REQ_SEND;
		1413	}
		1414	}
		1415
		1416	void
		1417	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1418	ALIAS:
		1419	aio_readlink = EIO_READLINK
		1420	aio_realpath = EIO_REALPATH
		1421	PPCODE:
		1422	{
656	dREQ;	1423	dREQ;
657		1424
658	req->type = EIO_READLINK;	1425	req->type = ix;
659	req->sv1 = newSVsv (path);	1426	req_set_path1 (req, pathname);
660	req->ptr1 = SvPVbyte_nolen (req->sv1);
661		1427
662	REQ_SEND;	1428	REQ_SEND;
663	}	1429	}
664		1430
665	void	1431	void
666	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1432	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
667	PROTOTYPE: $$$$;$
668	PPCODE:	1433	PPCODE:
669	{	1434	{
		1435	int ifd = s_fileno_croak (in_fh , 0);
		1436	int ofd = s_fileno_croak (out_fh, 1);
670	dREQ;	1437	dREQ;
671		1438
672	req->type = EIO_SENDFILE;	1439	req->type = EIO_SENDFILE;
673	req->sv1 = newSVsv (out_fh);	1440	req->sv1 = newSVsv (out_fh);
674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1441	req->int1 = ofd;
675	req->sv2 = newSVsv (in_fh);	1442	req->sv2 = newSVsv (in_fh);
676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1443	req->int2 = ifd;
677	req->offs = SvVAL64 (in_offset);	1444	req->offs = in_offset;
678	req->size = length;	1445	req->size = length;
679		1446
680	REQ_SEND;	1447	REQ_SEND;
681	}	1448	}
682		1449
683	void	1450	void
684	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1451	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
685	PROTOTYPE: $$$;$
686	PPCODE:	1452	PPCODE:
687	{	1453	{
		1454	int fd = s_fileno_croak (fh, 0);
688	dREQ;	1455	dREQ;
689		1456
690	req->type = EIO_READAHEAD;	1457	req->type = EIO_READAHEAD;
691	req->sv1 = newSVsv (fh);	1458	req->sv1 = newSVsv (fh);
692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1459	req->int1 = fd;
693	req->offs = SvVAL64 (offset);	1460	req->offs = offset;
694	req->size = length;	1461	req->size = length;
695		1462
696	REQ_SEND;	1463	REQ_SEND;
697	}	1464	}
698		1465
699	void	1466	void
700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1467	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
701	ALIAS:	1468	ALIAS:
702	aio_stat = EIO_STAT	1469	aio_stat = EIO_STAT
703	aio_lstat = EIO_LSTAT	1470	aio_lstat = EIO_LSTAT
		1471	aio_statvfs = EIO_STATVFS
704	PPCODE:	1472	PPCODE:
705	{	1473	{
706	dREQ;	1474	dREQ;
707		1475
708	req->sv1 = newSVsv (fh_or_path);	1476	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
709
710	if (SvPOK (req->sv1))
711	{
712	req->type = ix;
713	req->ptr1 = SvPVbyte_nolen (req->sv1);
714	}
715	else
716	{
717	req->type = EIO_FSTAT;
718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
719	}
720		1477
721	REQ_SEND;	1478	REQ_SEND;
722	}	1479	}
723		1480
		1481	UV
		1482	major (UV dev)
		1483	ALIAS:
		1484	minor = 1
		1485	CODE:
		1486	RETVAL = ix ? minor (dev) : major (dev);
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	UV
		1491	makedev (UV maj, UV min)
		1492	CODE:
		1493	RETVAL = makedev (maj, min);
		1494	OUTPUT:
		1495	RETVAL
		1496
724	void	1497	void
725	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1498	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
726	PPCODE:	1499	PPCODE:
727	{	1500	{
728	dREQ;	1501	dREQ;
729		1502
730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1503	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1504	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
732	req->sv1 = newSVsv (fh_or_path);	1505	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
733
734	if (SvPOK (req->sv1))
735	{
736	req->type = EIO_UTIME;
737	req->ptr1 = SvPVbyte_nolen (req->sv1);
738	}
739	else
740	{
741	req->type = EIO_FUTIME;
742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
743	}
744		1506
745	REQ_SEND;	1507	REQ_SEND;
746	}	1508	}
747		1509
748	void	1510	void
749	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1511	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
750	PPCODE:	1512	PPCODE:
751	{	1513	{
752	dREQ;	1514	dREQ;
753		1515
754	req->sv1 = newSVsv (fh_or_path);
755	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1516	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
756		1517	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
757	if (SvPOK (req->sv1))
758	{
759	req->type = EIO_TRUNCATE;
760	req->ptr1 = SvPVbyte_nolen (req->sv1);
761	}
762	else
763	{
764	req->type = EIO_FTRUNCATE;
765	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
766	}
767		1518
768	REQ_SEND;	1519	REQ_SEND;
769	}	1520	}
770		1521
771	void	1522	void
772	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1523	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
773	ALIAS:
774	aio_chmod = EIO_CHMOD
775	aio_mkdir = EIO_MKDIR
776	PPCODE:	1524	PPCODE:
777	{	1525	{
778	dREQ;	1526	dREQ;
779		1527
780	req->int2 = mode;	1528	req->int2 = mode;
781	req->sv1 = newSVsv (fh_or_path);	1529	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
782
783	if (SvPOK (req->sv1))
784	{
785	req->type = ix;
786	req->ptr1 = SvPVbyte_nolen (req->sv1);
787	}
788	else
789	{
790	req->type = EIO_FCHMOD;
791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
792	}
793		1530
794	REQ_SEND;	1531	REQ_SEND;
795	}	1532	}
796		1533
797	void	1534	void
798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1535	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
799	PPCODE:	1536	PPCODE:
800	{	1537	{
801	dREQ;	1538	dREQ;
802		1539
803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1540	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1541	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
805	req->sv1 = newSVsv (fh_or_path);	1542	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
806
807	if (SvPOK (req->sv1))
808	{
809	req->type = EIO_CHOWN;
810	req->ptr1 = SvPVbyte_nolen (req->sv1);
811	}
812	else
813	{
814	req->type = EIO_FCHOWN;
815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
816	}
817		1543
818	REQ_SEND;	1544	REQ_SEND;
819	}	1545	}
820		1546
821	void	1547	void
		1548	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1549	PPCODE:
		1550	{
		1551	dREQ;
		1552
		1553	req->type = EIO_READDIR;
		1554	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1555
		1556	if (flags & EIO_READDIR_DENTS)
		1557	req->int1 |= EIO_READDIR_CUSTOM2;
		1558
		1559	req_set_path1 (req, pathname);
		1560
		1561	REQ_SEND;
		1562	}
		1563
		1564	void
		1565	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
		1570	req->type = EIO_MKDIR;
		1571	req->int2 = mode;
		1572	req_set_path1 (req, pathname);
		1573
		1574	REQ_SEND;
		1575	}
		1576
		1577	void
822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1578	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
823	ALIAS:	1579	ALIAS:
824	aio_unlink = EIO_UNLINK	1580	aio_unlink = EIO_UNLINK
825	aio_rmdir = EIO_RMDIR	1581	aio_rmdir = EIO_RMDIR
826	aio_readdir = EIO_READDIR	1582	aio_readdir = EIO_READDIR
827	PPCODE:	1583	PPCODE:
828	{	1584	{
829	dREQ;	1585	dREQ;
830		1586
831	req->type = ix;	1587	req->type = ix;
832	req->sv1 = newSVsv (pathname);	1588	req_set_path1 (req, pathname);
833	req->ptr1 = SvPVbyte_nolen (req->sv1);
834		1589
835	REQ_SEND;	1590	REQ_SEND;
836	}	1591	}
837		1592
838	void	1593	void
839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1594	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
840	ALIAS:	1595	ALIAS:
841	aio_link = EIO_LINK	1596	aio_link = EIO_LINK
842	aio_symlink = EIO_SYMLINK	1597	aio_symlink = EIO_SYMLINK
843	aio_rename = EIO_RENAME	1598	aio_rename = EIO_RENAME
844	PPCODE:	1599	PPCODE:
845	{	1600	{
		1601	eio_wd wd2 = 0;
846	dREQ;	1602	dREQ;
847		1603
848	req->type = ix;	1604	req->type = ix;
849	req->sv1 = newSVsv (oldpath);	1605	req_set_path1 (req, oldpath);
850	req->ptr1 = SvPVbyte_nolen (req->sv1);	1606	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
851	req->sv2 = newSVsv (newpath);	1607	req->int3 = (long)wd2;
852	req->ptr2 = SvPVbyte_nolen (req->sv2);
853		1608
854	REQ_SEND;	1609	REQ_SEND;
855	}	1610	}
856		1611
857	void	1612	void
		1613	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1614	PPCODE:
		1615	{
		1616	eio_wd wd2 = 0;
		1617	dREQ;
		1618
		1619	req->type = EIO_RENAME;
		1620	req_set_path1 (req, oldpath);
		1621	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1622	req->int2 = flags;
		1623	req->int3 = (long)wd2;
		1624
		1625	REQ_SEND;
		1626	}
		1627
		1628	void
858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1629	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
859	PPCODE:	1630	PPCODE:
860	{	1631	{
861	dREQ;	1632	dREQ;
862		1633
863	req->type = EIO_MKNOD;	1634	req->type = EIO_MKNOD;
864	req->sv1 = newSVsv (pathname);
865	req->ptr1 = SvPVbyte_nolen (req->sv1);
866	req->int2 = (mode_t)mode;	1635	req->int2 = (mode_t)mode;
867	req->offs = dev;	1636	req->offs = dev;
		1637	req_set_path1 (req, pathname);
868		1638
869	REQ_SEND;	1639	REQ_SEND;
870	}	1640	}
871		1641
872	void	1642	void
		1643	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1644	ALIAS:
		1645	aio_mtouch = EIO_MTOUCH
		1646	aio_msync = EIO_MSYNC
		1647	PPCODE:
		1648	{
		1649	STRLEN svlen;
		1650	char *svptr = SvPVbyte (data, svlen);
		1651	UV len = SvUV (length);
		1652
		1653	if (flags < 0)
		1654	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1655
		1656	if (offset < 0)
		1657	offset += svlen;
		1658
		1659	if (offset < 0 || offset > svlen)
		1660	croak ("offset outside of scalar");
		1661
		1662	if (!SvOK (length) || len + offset > svlen)
		1663	len = svlen - offset;
		1664
		1665	{
		1666	dREQ;
		1667
		1668	req->type = ix;
		1669	req->sv2 = SvREFCNT_inc (data);
		1670	req->ptr2 = (char *)svptr + offset;
		1671	req->size = len;
		1672	req->int1 = flags;
		1673
		1674	REQ_SEND;
		1675	}
		1676	}
		1677
		1678	void
		1679	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1680	PPCODE:
		1681	{
		1682	STRLEN svlen;
		1683	char *svptr = SvPVbyte (data, svlen);
		1684	UV len = SvUV (length);
		1685
		1686	if (offset < 0)
		1687	offset += svlen;
		1688
		1689	if (offset < 0 || offset > svlen)
		1690	croak ("offset outside of scalar");
		1691
		1692	if (!SvOK (length) || len + offset > svlen)
		1693	len = svlen - offset;
		1694
		1695	{
		1696	dREQ;
		1697
		1698	req->type = EIO_MLOCK;
		1699	req->sv2 = SvREFCNT_inc (data);
		1700	req->ptr2 = (char *)svptr + offset;
		1701	req->size = len;
		1702
		1703	REQ_SEND;
		1704	}
		1705	}
		1706
		1707	void
		1708	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->type = EIO_MLOCKALL;
		1714	req->int1 = flags;
		1715
		1716	REQ_SEND;
		1717	}
		1718
		1719	void
		1720	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1721	PPCODE:
		1722	{
		1723	int fd = s_fileno_croak (fh, 0);
		1724	dREQ;
		1725
		1726	req->type = EIO_CUSTOM;
		1727	req->sv1 = newSVsv (fh);
		1728	req->int1 = fd;
		1729
		1730	req->feed = fiemap;
		1731	#if HAVE_FIEMAP
		1732	/* keep our fingers crossed that the next two types are 64 bit */
		1733	req->offs = start;
		1734	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1735	req->int2 = flags;
		1736	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1737	#endif
		1738
		1739	REQ_SEND;
		1740	}
		1741
		1742	void
873	aio_busy (double delay, SV *callback=&PL_sv_undef)	1743	aio_busy (double delay, SV *callback = &PL_sv_undef)
874	PPCODE:	1744	PPCODE:
875	{	1745	{
876	dREQ;	1746	dREQ;
877		1747
878	req->type = EIO_BUSY;	1748	req->type = EIO_BUSY;
…		…
880		1750
881	REQ_SEND;	1751	REQ_SEND;
882	}	1752	}
883		1753
884	void	1754	void
885	aio_group (SV *callback=&PL_sv_undef)	1755	aio_group (SV *callback = &PL_sv_undef)
886	PROTOTYPE: ;$
887	PPCODE:	1756	PPCODE:
888	{	1757	{
889	dREQ;	1758	dREQ;
890		1759
891	req->type = EIO_GROUP;	1760	req->type = EIO_GROUP;
892		1761
		1762	PUTBACK;
893	eio_submit (req);	1763	req_submit (req);
		1764	SPAGAIN;
		1765
894	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1766	XPUSHs (req_sv (req, aio_grp_stash));
895	}	1767	}
896		1768
897	void	1769	void
898	aio_nop (SV *callback=&PL_sv_undef)	1770	aio_nop (SV *callback = &PL_sv_undef)
899	ALIAS:	1771	ALIAS:
900	aio_nop = EIO_NOP	1772	aio_nop = EIO_NOP
901	aio_sync = EIO_SYNC	1773	aio_sync = EIO_SYNC
902	PPCODE:	1774	PPCODE:
903	{	1775	{
…		…
907		1779
908	REQ_SEND;	1780	REQ_SEND;
909	}	1781	}
910		1782
911	int	1783	int
912	aioreq_pri (int pri = 0)	1784	aioreq_pri (int pri = NO_INIT)
913	PROTOTYPE: ;$
914	CODE:	1785	CODE:
915	RETVAL = next_pri;	1786	RETVAL = next_pri;
916	if (items > 0)	1787	if (items > 0)
917	{	1788	{
918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1789	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1801	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
931	next_pri = nice;	1802	next_pri = nice;
932		1803
933	void	1804	void
934	flush ()	1805	flush ()
935	PROTOTYPE:
936	CODE:	1806	CODE:
937	while (eio_nreqs ())	1807	while (eio_nreqs ())
938	{	1808	{
939	poll_wait ();	1809	poll_wait ();
940	poll_cb ();	1810	poll_cb ();
941	}	1811	}
942		1812
943	int	1813	int
944	poll()	1814	poll ()
945	PROTOTYPE:
946	CODE:	1815	CODE:
947	poll_wait ();	1816	poll_wait ();
948	RETVAL = poll_cb ();	1817	RETVAL = poll_cb ();
949	OUTPUT:	1818	OUTPUT:
950	RETVAL	1819	RETVAL
951		1820
952	int	1821	int
953	poll_fileno()	1822	poll_fileno ()
954	PROTOTYPE:
955	CODE:	1823	CODE:
956	RETVAL = respipe [0];	1824	RETVAL = s_epipe_fd (&respipe);
957	OUTPUT:	1825	OUTPUT:
958	RETVAL	1826	RETVAL
959		1827
960	int	1828	int
961	poll_cb(...)	1829	poll_cb (...)
962	PROTOTYPE:	1830	PROTOTYPE:
963	CODE:	1831	CODE:
964	RETVAL = poll_cb ();	1832	RETVAL = poll_cb ();
965	OUTPUT:	1833	OUTPUT:
966	RETVAL	1834	RETVAL
967		1835
968	void	1836	void
969	poll_wait()	1837	poll_wait ()
970	PROTOTYPE:
971	CODE:	1838	CODE:
972	poll_wait ();	1839	poll_wait ();
973		1840
974	int	1841	int
975	nreqs()	1842	nreqs ()
976	PROTOTYPE:
977	CODE:	1843	CODE:
978	RETVAL = eio_nreqs ();	1844	RETVAL = eio_nreqs ();
979	OUTPUT:	1845	OUTPUT:
980	RETVAL	1846	RETVAL
981		1847
982	int	1848	int
983	nready()	1849	nready ()
984	PROTOTYPE:
985	CODE:	1850	CODE:
986	RETVAL = eio_nready ();	1851	RETVAL = eio_nready ();
987	OUTPUT:	1852	OUTPUT:
988	RETVAL	1853	RETVAL
989		1854
990	int	1855	int
991	npending()	1856	npending ()
992	PROTOTYPE:
993	CODE:	1857	CODE:
994	RETVAL = eio_npending ();	1858	RETVAL = eio_npending ();
995	OUTPUT:	1859	OUTPUT:
996	RETVAL	1860	RETVAL
997		1861
998	int	1862	int
999	nthreads()	1863	nthreads ()
1000	PROTOTYPE:
1001	CODE:	1864	CODE:
1002	RETVAL = eio_nthreads ();	1865	RETVAL = eio_nthreads ();
1003	OUTPUT:	1866	OUTPUT:
1004	RETVAL	1867	RETVAL
1005		1868
		1869	int
		1870	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1871	CODE:
		1872	RETVAL = posix_fadvise (fh, offset, length, advice);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	IV
		1877	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1878	CODE:
		1879	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	void
		1884	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1885	PPCODE:
		1886	sv_unmagic (scalar, MMAP_MAGIC);
		1887	{
		1888	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1889	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1890	if (addr == (void *)-1)
		1891	XSRETURN_NO;
		1892
		1893	sv_force_normal (scalar);
		1894
		1895	/* we store the length in mg_obj, as namlen is I32 :/ */
		1896	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1897	->mg_obj = (SV *)length;
		1898
		1899	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1900
		1901	if (!(prot & PROT_WRITE))
		1902	SvREADONLY_on (scalar);
		1903
		1904	if (SvLEN (scalar))
		1905	Safefree (SvPVX (scalar));
		1906
		1907	SvPVX (scalar) = (char *)addr;
		1908	SvCUR_set (scalar, length);
		1909	SvLEN_set (scalar, 0);
		1910	SvPOK_only (scalar);
		1911
		1912	XSRETURN_YES;
		1913	}
		1914
		1915	void
		1916	munmap (SV *scalar)
		1917	CODE:
		1918	sv_unmagic (scalar, MMAP_MAGIC);
		1919
		1920	int
		1921	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1922	ALIAS:
		1923	mprotect = 1
		1924	CODE:
		1925	{
		1926	STRLEN svlen;
		1927	void *addr = SvPVbyte (scalar, svlen);
		1928	STRLEN len = SvUV (length);
		1929
		1930	if (offset < 0)
		1931	offset += svlen;
		1932
		1933	if (offset < 0 || offset > svlen)
		1934	croak ("offset outside of scalar");
		1935
		1936	if (!SvOK (length) || len + offset > svlen)
		1937	len = svlen - offset;
		1938
		1939	addr = (void *)(((intptr_t)addr) + offset);
		1940	eio_page_align (&addr, &len);
		1941
		1942	switch (ix)
		1943	{
		1944	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1945	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1946	}
		1947	}
		1948	OUTPUT:
		1949	RETVAL
		1950
		1951	int
		1952	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1953	CODE:
		1954	{
		1955	STRLEN svlen;
		1956	void *addr = SvPVbyte (scalar, svlen);
		1957	size_t len = SvUV (length);
		1958
		1959	if (offset < 0)
		1960	offset += svlen;
		1961
		1962	if (offset < 0 || offset > svlen)
		1963	croak ("offset outside of scalar");
		1964
		1965	if (!SvOK (length) || len + offset > svlen)
		1966	len = svlen - offset;
		1967
		1968	addr = (void *)(((intptr_t)addr) + offset);
		1969	eio_page_align (&addr, &len);
		1970	#if _POSIX_MEMLOCK_RANGE
		1971	RETVAL = munlock (addr, len);
		1972	#else
		1973	RETVAL = EIO_ENOSYS ();
		1974	#endif
		1975	}
		1976	OUTPUT:
		1977	RETVAL
		1978
		1979	int
		1980	munlockall ()
		1981	CODE:
		1982	#if _POSIX_MEMLOCK
		1983	munlockall ();
		1984	#else
		1985	RETVAL = EIO_ENOSYS ();
		1986	#endif
		1987	OUTPUT:
		1988	RETVAL
		1989
		1990	int
		1991	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1992	CODE:
		1993	{
		1994	#if HAVE_LINUX_SPLICE
		1995	loff_t off_in_, off_out_;
		1996	RETVAL = splice (
		1997	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1998	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1999	length, flags
		2000	);
		2001	#else
		2002	RETVAL = EIO_ENOSYS ();
		2003	#endif
		2004	}
		2005	OUTPUT:
		2006	RETVAL
		2007
		2008	int
		2009	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2010	CODE:
		2011	#if HAVE_LINUX_SPLICE
		2012	RETVAL = tee (rfh, wfh, length, flags);
		2013	#else
		2014	RETVAL = EIO_ENOSYS ();
		2015	#endif
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	pipesize (aio_rfd rfh, int new_size = -1)
		2021	PROTOTYPE: $;$
		2022	CODE:
		2023	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2024	if (new_size >= 0)
		2025	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2026	else
		2027	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2028	#else
		2029	errno = ENOSYS;
		2030	RETVAL = -1;
		2031	#endif
		2032	OUTPUT:
		2033	RETVAL
		2034
		2035	void
		2036	pipe2 (int flags = 0)
		2037	PROTOTYPE: ;$
		2038	PPCODE:
		2039	{
		2040	int fd[2];
		2041	int res;
		2042
		2043	if (flags)
		2044	#if HAVE_PIPE2
		2045	res = pipe2 (fd, flags);
		2046	#else
		2047	res = (errno = ENOSYS, -1);
		2048	#endif
		2049	else
		2050	res = pipe (fd);
		2051
		2052	if (!res)
		2053	{
		2054	EXTEND (SP, 2);
		2055	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2056	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2057	}
		2058	}
		2059
		2060	UV
		2061	get_fdlimit ()
		2062	CODE:
		2063	#if HAVE_RLIMITS
		2064	struct rlimit rl;
		2065	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2066	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2067	#endif
		2068	XSRETURN_UNDEF;
		2069	OUTPUT:
		2070	RETVAL
		2071
		2072	void
		2073	min_fdlimit (UV limit = 0x7fffffffU)
		2074	CODE:
		2075	{
		2076	#if HAVE_RLIMITS
		2077	struct rlimit rl;
		2078	rlim_t orig_rlim_max;
		2079	UV bit;
		2080
		2081	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2082	goto fail;
		2083
		2084	if (rl.rlim_cur == RLIM_INFINITY)
		2085	XSRETURN_YES;
		2086
		2087	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2088
		2089	if (rl.rlim_cur < limit)
		2090	{
		2091	rl.rlim_cur = limit;
		2092
		2093	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2094	rl.rlim_max = rl.rlim_cur;
		2095	}
		2096
		2097	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2098	XSRETURN_YES;
		2099
		2100	if (errno == EPERM)
		2101	{
		2102	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2103	/* our limit overflows a system-wide limit */
		2104	/* try an adaptive algorithm, but do not lower the hardlimit */
		2105	rl.rlim_max = 0;
		2106	for (bit = 0x40000000U; bit; bit >>= 1)
		2107	{
		2108	rl.rlim_max |= bit;
		2109	rl.rlim_cur = rl.rlim_max;
		2110
		2111	/* nevr decrease the hard limit */
		2112	if (rl.rlim_max < orig_rlim_max)
		2113	break;
		2114
		2115	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2116	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2117	}
		2118
		2119	/* now, raise the soft limit to the max permitted */
		2120	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2121	{
		2122	rl.rlim_cur = rl.rlim_max;
		2123	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2124	errno = EPERM;
		2125	}
		2126	}
		2127	#endif
		2128	fail:
		2129	XSRETURN_UNDEF;
		2130	}
		2131
1006	void _on_next_submit (SV *cb)	2132	void _on_next_submit (SV *cb)
1007	CODE:	2133	CODE:
1008	SvREFCNT_dec (on_next_submit);	2134	SvREFCNT_dec (on_next_submit);
1009	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2135	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1010		2136
1011	PROTOTYPES: DISABLE	2137	PROTOTYPES: DISABLE
1012		2138
		2139	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2140
		2141	BOOT:
		2142	{
		2143	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2144	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2145	}
		2146
		2147	void
		2148	DESTROY (SV *self)
		2149	CODE:
		2150	{
		2151	aio_wd wd = SvAIO_WD (self);
		2152	#if HAVE_AT
		2153	{
		2154	SV *callback = &PL_sv_undef;
		2155	dREQ; /* clobbers next_pri :/ */
		2156	next_pri = req->pri; /* restore next_pri */
		2157	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2158	req->type = EIO_WD_CLOSE;
		2159	req->wd = wd;
		2160	REQ_SEND;
		2161	}
		2162	#else
		2163	eio_wd_close_sync (wd);
		2164	#endif
		2165	}
		2166
1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2167	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1014		2168
1015	void	2169	void
1016	cancel (aio_req_ornot req)	2170	cancel (aio_req_ornot req)
1017	CODE:	2171	CODE:
1018	eio_cancel (req);	2172	eio_cancel (req);
1019		2173
1020	void	2174	void
1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2175	cb (aio_req_ornot req, SV *callback = NO_INIT)
1022	CODE:	2176	PPCODE:
		2177	{
		2178	if (GIMME_V != G_VOID)
		2179	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2180
		2181	if (items > 1)
		2182	{
		2183	SV *cb_cv = get_cb (callback);
		2184
1023	SvREFCNT_dec (req->callback);	2185	SvREFCNT_dec (req->callback);
1024	req->callback = newSVsv (callback);	2186	req->callback = SvREFCNT_inc (cb_cv);
		2187	}
		2188	}
1025		2189
1026	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2190	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1027		2191
1028	void	2192	void
1029	add (aio_req grp, ...)	2193	add (aio_req grp, ...)
…		…
1061	AV *av;	2225	AV *av;
1062		2226
1063	grp->errorno = errno;	2227	grp->errorno = errno;
1064		2228
1065	av = newAV ();	2229	av = newAV ();
		2230	av_extend (av, items - 1);
1066		2231
1067	for (i = 1; i < items; ++i )	2232	for (i = 1; i < items; ++i )
1068	av_push (av, newSVsv (ST (i)));	2233	av_push (av, newSVsv (ST (i)));
1069		2234
1070	SvREFCNT_dec (grp->sv1);	2235	SvREFCNT_dec (grp->sv1);
…		…
1080	limit (aio_req grp, int limit)	2245	limit (aio_req grp, int limit)
1081	CODE:	2246	CODE:
1082	eio_grp_limit (grp, limit);	2247	eio_grp_limit (grp, limit);
1083		2248
1084	void	2249	void
1085	feed (aio_req grp, SV *callback=&PL_sv_undef)	2250	feed (aio_req grp, SV *callback = &PL_sv_undef)
1086	CODE:	2251	CODE:
1087	{	2252	{
1088	SvREFCNT_dec (grp->sv2);	2253	SvREFCNT_dec (grp->sv2);
1089	grp->sv2 = newSVsv (callback);	2254	grp->sv2 = newSVsv (callback);
		2255	grp->feed = aio_grp_feed;
1090		2256
1091	if (grp->int2 <= 0)	2257	if (grp->int2 <= 0)
1092	grp->int2 = 2;	2258	grp->int2 = 2;
1093		2259
1094	eio_grp_limit (grp, grp->int2);	2260	eio_grp_limit (grp, grp->int2);

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