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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.132 by root, Mon Oct 13 10:38:17 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
21	#ifdef _WIN32
22
23	# define EIO_STRUCT_DIRENT Direntry_t
24	# undef malloc
25	# undef free
26
27	// perl overrides all those nice win32 functions
28	# undef open
29	# undef read
30	# undef write
31	# undef send
32	# undef recv
33	# undef stat
34	# undef fstat
35	# define lstat stat
36	# undef truncate
37	# undef ftruncate
38	# undef open
39	# undef close
40	# undef unlink
41	# undef rmdir
42	# undef rename
43	# undef lseek
44
45	# define chown(a,b,c) (errno = ENOSYS, -1)
46	# define fchown(a,b,c) (errno = ENOSYS, -1)
47	# define fchmod(a,b) (errno = ENOSYS, -1)
48	# define symlink(a,b) (errno = ENOSYS, -1)
49	# define readlink(a,b,c) (errno = ENOSYS, -1)
50	# define mknod(a,b,c) (errno = ENOSYS, -1)
51	# define truncate(a,b) (errno = ENOSYS, -1)
52	# define ftruncate(fd,o) chsize ((fd), (o))
53	# define fsync(fd) _commit (fd)
54	# define opendir(fd) (errno = ENOSYS, 0)
55	# define readdir(fd) (errno = ENOSYS, -1)
56	# define closedir(fd) (errno = ENOSYS, -1)
57	# define mkdir(a,b) mkdir (a)
58
59	#else
60
61	# include <sys/time.h>
62	# include <sys/select.h>
63	# include <unistd.h>
64	# include <utime.h>
65	# include <signal.h>
66	# define EIO_STRUCT_DIRENT struct dirent
67
68	#endif
69		40
70	/* perl stupidly overrides readdir and maybe others */	41	/* perl stupidly overrides readdir and maybe others */
71	/* with thread-unsafe versions, imagine that :( */	42	/* with thread-unsafe versions, imagine that :( */
72	#undef readdir	43	#undef readdir
73	#undef opendir	44	#undef opendir
74	#undef closedir	45	#undef closedir
75		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
76	#define EIO_STRUCT_STAT Stat_t	82	#define EIO_STRUCT_STATI64
77		83
78	/* use NV for 32 bit perls as it allows larger offsets */
79	#if IVSIZE >= 8
80	# define SvVAL64 SvIV
81	#else	84	#else
82	# define SvVAL64 SvNV	85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
83	#endif	94	#endif
84		95
85	/*****************************************************************************/	96	/*****************************************************************************/
86		97
87	#if __GNUC__ >= 3	98	#if __GNUC__ >= 3
…		…
93	#define expect_false(expr) expect ((expr) != 0, 0)	104	#define expect_false(expr) expect ((expr) != 0, 0)
94	#define expect_true(expr) expect ((expr) != 0, 1)	105	#define expect_true(expr) expect ((expr) != 0, 1)
95		106
96	/*****************************************************************************/	107	/*****************************************************************************/
97		108
98	static HV *stash;	109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
99	typedef SV SV8; /* byte-sv, used for argument-checking */	116	typedef SV SV8; /* byte-sv, used for argument-checking */
		117	typedef int aio_rfd; /* read file desriptor */
		118	typedef int aio_wfd; /* write file descriptor */
100		119
101	#define AIO_REQ_KLASS "IO::AIO::REQ"	120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
102	#define AIO_GRP_KLASS "IO::AIO::GRP"
103		121
104	#define EIO_REQ_MEMBERS \	122	#define EIO_REQ_MEMBERS \
105	SV *callback; \	123	SV *callback; \
106	SV *sv1, *sv2; \	124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
107	STRLEN stroffset; \	126	STRLEN stroffset; \
108	SV *self;	127	SV *self;
109		128
110	#define EIO_NO_WRAPPERS 1	129	#define EIO_NO_WRAPPERS 1
111		130
…		…
114	static int req_invoke (eio_req *req);	133	static int req_invoke (eio_req *req);
115	#define EIO_FINISH(req) req_invoke (req)	134	#define EIO_FINISH(req) req_invoke (req)
116	static void req_destroy (eio_req *grp);	135	static void req_destroy (eio_req *grp);
117	#define EIO_DESTROY(req) req_destroy (req)	136	#define EIO_DESTROY(req) req_destroy (req)
118		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
		151	# else
		152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		153	# endif
		154	#endif
		155
		156	/* defines all sorts of constants to 0 unless they are already defined */
		157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
		159
		160	#ifndef makedev
		161	# define makedev(maj,min) (((maj) << 8) | (min))
		162	#endif
		163	#ifndef major
		164	# define major(dev) ((dev) >> 8)
		165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
		169
		170	#if PAGESIZE <= 0
		171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
		173
		174	/*****************************************************************************/
		175
		176	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	/*****************************************************************************/
		273
119	enum {	274	enum {
120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	275	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	276	};
122		277
123	#include "libeio/eio.c"
124
125	typedef eio_req *aio_req;	278	typedef eio_req *aio_req;
126	typedef eio_req *aio_req_ornot;	279	typedef eio_req *aio_req_ornot;
		280	typedef eio_wd aio_wd;
127		281
128	static SV *on_next_submit;	282	static SV *on_next_submit;
129	static int next_pri = EIO_PRI_DEFAULT;	283	static int next_pri = EIO_PRI_DEFAULT;
130	static int max_outstanding;	284	static int max_outstanding;
131		285
132	static int respipe_osf [2], respipe [2] = { -1, -1 };	286	static s_epipe respipe;
133		287
134	static void req_destroy (aio_req req);	288	static void req_destroy (aio_req req);
135	static void req_cancel (aio_req req);	289	static void req_cancel (aio_req req);
136		290
137	static void want_poll (void)	291	static void
		292	want_poll (void)
138	{	293	{
139	/* write a dummy byte to the pipe so fh becomes ready */	294	/* write a dummy byte to the pipe so fh becomes ready */
140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	295	s_epipe_signal (&respipe);
141	}	296	}
142		297
143	static void done_poll (void)	298	static void
		299	done_poll (void)
144	{	300	{
145	/* read any signals sent by the worker threads */	301	/* read any signals sent by the worker threads */
146	char buf [4];	302	s_epipe_drain (&respipe);
147	while (respipe_read (respipe [0], buf, 4) == 4)
148	;
149	}	303	}
150		304
151	/* must be called at most once */	305	/* must be called at most once */
152	static SV *req_sv (aio_req req, const char *klass)	306	static SV *
		307	req_sv (aio_req req, HV *stash)
153	{	308	{
154	if (!req->self)	309	if (!req->self)
155	{	310	{
156	req->self = (SV *)newHV ();	311	req->self = (SV *)newHV ();
157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	312	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
158	}	313	}
159		314
160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	315	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
161	}	316	}
162		317
163	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)
164	{	326	{
165	MAGIC *mg;	327	MAGIC *mg;
166		328
167	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")))
168	croak ("object of class " AIO_REQ_KLASS " expected");	334	croak ("object of class IO::AIO::REQ expected");
169		335
170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	336	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
171		337
172	return mg ? (aio_req)mg->mg_ptr : 0;	338	return mg ? (aio_req)mg->mg_ptr : 0;
173	}	339	}
174		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
175	static void aio_grp_feed (aio_req grp)	378	aio_grp_feed (aio_req grp)
176	{	379	{
177	if (grp->sv2 && SvOK (grp->sv2))	380	if (grp->sv2 && SvOK (grp->sv2))
178	{	381	{
179	dSP;	382	dSP;
180		383
181	ENTER;	384	ENTER;
182	SAVETMPS;	385	SAVETMPS;
183	PUSHMARK (SP);	386	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	387	XPUSHs (req_sv (grp, aio_grp_stash));
185	PUTBACK;	388	PUTBACK;
186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	389	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	390	SPAGAIN;
188	FREETMPS;	391	FREETMPS;
189	LEAVE;	392	LEAVE;
190	}	393	}
191	}	394	}
192		395
		396	static void
193	static void req_submit (eio_req *req)	397	req_submit (eio_req *req)
194	{	398	{
195	eio_submit (req);	399	eio_submit (req);
196		400
197	if (expect_false (on_next_submit))	401	if (expect_false (on_next_submit))
198	{	402	{
…		…
205	PUTBACK;	409	PUTBACK;
206	call_sv (cb, G_DISCARD | G_EVAL);	410	call_sv (cb, G_DISCARD | G_EVAL);
207	}	411	}
208	}	412	}
209		413
		414	static int
210	static int req_invoke (eio_req *req)	415	req_invoke (eio_req *req)
211	{	416	{
212	dSP;
213
214	if (req->flags & FLAG_SV2_RO_OFF)	417	if (req->flags & FLAG_SV2_RO_OFF)
215	SvREADONLY_off (req->sv2);	418	SvREADONLY_off (req->sv2);
216		419
217	if (!EIO_CANCELLED (req) && req->callback)	420	if (!EIO_CANCELLED (req) && req->callback)
218	{	421	{
		422	dSP;
		423	static SV *sv_result_cache; /* caches the result integer SV */
		424	SV *sv_result;
		425
219	ENTER;	426	ENTER;
220	SAVETMPS;	427	SAVETMPS;
221	PUSHMARK (SP);	428	PUSHMARK (SP);
222	EXTEND (SP, 1);	429	EXTEND (SP, 1);
223		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
224	switch (req->type)	444	switch (req->type)
225	{	445	{
		446	case EIO_WD_OPEN:
		447	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		448	break;
		449
226	case EIO_READDIR:	450	case EIO_READDIR:
227	{	451	{
228	SV *rv = &PL_sv_undef;	452	SV *rv = &PL_sv_undef;
229		453
230	if (req->result >= 0)	454	if (req->result >= 0)
231	{	455	{
232	int i;	456	int i;
233	char *buf = req->ptr2;	457	char *names = (char *)req->ptr2;
		458	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
234	AV *av = newAV ();	459	AV *av = newAV ();
235		460
236	av_extend (av, req->result - 1);	461	av_extend (av, req->result - 1);
237		462
238	for (i = 0; i < req->result; ++i)	463	for (i = 0; i < req->result; ++i)
239	{	464	{
240	SV *sv = newSVpv (buf, 0);	465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
241		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
242	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);
243	buf += SvCUR (sv) + 1;	497	names += SvCUR (name) + 1;
		498	}
244	}	499	}
245		500
246	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	rv = sv_2mortal (newRV_noinc ((SV *)av));
247	}	502	}
248		503
249	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))));
250	}	508	}
251	break;	509	break;
252		510
253	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:
254	{	517	{
255	/* convert fd to fh */
256	SV *fh = &PL_sv_undef;	518	SV *rv = &PL_sv_undef;
257		519
		520	#ifndef _WIN32
258	if (req->result >= 0)	521	if (req->result >= 0)
259	{	522	{
		523	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
260	GV *gv = (GV *)sv_newmortal ();	524	HV *hv = newHV ();
261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	525	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
262	char sym [64];	526	* chooses to make it a struct.
263	int symlen;
264		527	*/
265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	528	unsigned long fsid = 0;
266	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));
267		530
268	symlen = snprintf (	531	rv = sv_2mortal (newRV_noinc ((SV *)hv));
269	sym,
270	sizeof (sym),
271	"%s&=%d",
272	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
273	req->result
274	);
275		532
276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	533	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
277	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);
278	}	544	}
		545	#endif
279		546
280	PUSHs (fh);	547	PUSHs (rv);
281	}	548	}
		549
282	break;	550	break;
283		551
284	case EIO_GROUP:	552	case EIO_GROUP:
285	req->int1 = 2; /* mark group as finished */	553	req->int1 = 2; /* mark group as finished */
286		554
…		…
298	case EIO_NOP:	566	case EIO_NOP:
299	case EIO_BUSY:	567	case EIO_BUSY:
300	break;	568	break;
301		569
302	case EIO_READLINK:	570	case EIO_READLINK:
		571	case EIO_REALPATH:
303	if (req->result > 0)	572	if (req->result > 0)
304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	573	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
305	break;	574	break;
306		575
307	case EIO_STAT:	576	case EIO_STAT:
308	case EIO_LSTAT:	577	case EIO_LSTAT:
309	case EIO_FSTAT:	578	case EIO_FSTAT:
310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	579	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		580
311	PL_laststatval = req->result;	581	if (!(PL_laststatval = req->result))
		582	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	583	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
313	PUSHs (sv_2mortal (newSViv (req->result)));	584
		585	PUSHs (sv_result);
314	break;	586	break;
315		587
		588	case EIO_SEEK:
		589	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		590	break;
		591
316	case EIO_READ:	592	case EIO_READ:
		593	{
317	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));
318	*SvEND (req->sv2) = 0;	595	*SvEND (req->sv2) = 0;
319	PUSHs (sv_2mortal (newSViv (req->result)));	596	SvPOK_only (req->sv2);
		597	SvSETMAGIC (req->sv2);
		598	PUSHs (sv_result);
		599	}
320	break;	600	break;
321		601
322	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 */
323	if (req->result > 0)	643	if (req->result > 0)
324	req->result = 0;	644	SvIV_set (sv_result, 0);
325	/* FALLTHROUGH */	645	/* FALLTHROUGH */
326		646
327	default:	647	default:
328	PUSHs (sv_2mortal (newSViv (req->result)));	648	PUSHs (sv_result);
329	break;	649	break;
330	}	650	}
331		651
332	errno = req->errorno;	652	errno = req->errorno;
333		653
334	PUTBACK;	654	PUTBACK;
335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	655	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
336	SPAGAIN;	656	SPAGAIN;
337		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
338	FREETMPS;	663	FREETMPS;
339	LEAVE;	664	LEAVE;
340		665
341	PUTBACK;	666	PUTBACK;
342	}	667	}
343		668
344	return !!SvTRUE (ERRSV);	669	return !!SvTRUE (ERRSV);
345	}	670	}
346		671
		672	static void
347	static void req_destroy (aio_req req)	673	req_destroy (aio_req req)
348	{	674	{
349	if (req->self)	675	if (req->self)
350	{	676	{
351	sv_unmagic (req->self, PERL_MAGIC_ext);	677	sv_unmagic (req->self, PERL_MAGIC_ext);
352	SvREFCNT_dec (req->self);	678	SvREFCNT_dec (req->self);
353	}	679	}
354		680
355	SvREFCNT_dec (req->sv1);	681	SvREFCNT_dec (req->sv1);
356	SvREFCNT_dec (req->sv2);	682	SvREFCNT_dec (req->sv2);
		683	SvREFCNT_dec (req->sv3);
		684	SvREFCNT_dec (req->sv4);
357	SvREFCNT_dec (req->callback);	685	SvREFCNT_dec (req->callback);
358		686
359	Safefree (req);	687	free (req);
360	}	688	}
361		689
		690	static void
362	static void req_cancel_subs (aio_req grp)	691	req_cancel_subs (aio_req grp)
363	{	692	{
364	aio_req sub;
365
366	if (grp->type != EIO_GROUP)	693	if (grp->type != EIO_GROUP)
367	return;	694	return;
368		695
369	SvREFCNT_dec (grp->sv2);	696	SvREFCNT_dec (grp->sv2);
370	grp->sv2 = 0;	697	grp->sv2 = 0;
371		698
372	eio_grp_cancel (grp);	699	eio_grp_cancel (grp);
373	}	700	}
374		701
375	#ifdef USE_SOCKETS_AS_HANDLES	702	static void ecb_cold
376	# define TO_SOCKET(x) (win32_get_osfhandle (x))	703	create_respipe (void)
377	#else	704	{
378	# define TO_SOCKET(x) (x)	705	if (s_epipe_renew (&respipe))
379	#endif	706	croak ("IO::AIO: unable to initialize result pipe");
		707	}
380		708
381	static void	709	static void
382	create_respipe (void)	710	poll_wait (void)
383	{	711	{
384	int old_readfd = respipe [0];
385
386	if (respipe [1] >= 0)
387	respipe_close (TO_SOCKET (respipe [1]));
388
389	#ifdef _WIN32
390	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
391	#else
392	if (pipe (respipe))
393	#endif
394	croak ("unable to initialize result pipe");
395
396	if (old_readfd >= 0)
397	{
398	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
399	croak ("unable to initialize result pipe(2)");
400
401	respipe_close (respipe [0]);
402	respipe [0] = old_readfd;
403	}
404
405	#ifdef _WIN32
406	int arg = 1;
407	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
408	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
409	#else
410	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
411	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
412	#endif
413	croak ("unable to initialize result pipe(3)");
414
415	respipe_osf [0] = TO_SOCKET (respipe [0]);
416	respipe_osf [1] = TO_SOCKET (respipe [1]);
417	}
418
419	static void poll_wait (void)
420	{
421	fd_set rfd;
422
423	while (eio_nreqs ())	712	while (eio_nreqs ())
424	{	713	{
425	int size;	714	int size;
426		715
427	X_LOCK (reslock);	716	X_LOCK (EIO_POOL->reslock);
428	size = res_queue.size;	717	size = EIO_POOL->res_queue.size;
429	X_UNLOCK (reslock);	718	X_UNLOCK (EIO_POOL->reslock);
430		719
431	if (size)	720	if (size)
432	return;	721	return;
433		722
434	etp_maybe_start_thread ();	723	etp_maybe_start_thread (EIO_POOL);
435		724
436	FD_ZERO (&rfd);	725	s_epipe_wait (&respipe);
437	FD_SET (respipe [0], &rfd);
438
439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
440	}	726	}
441	}	727	}
442		728
443	static int poll_cb (void)	729	static int
		730	poll_cb (void)
444	{	731	{
445	for (;;)	732	for (;;)
446	{	733	{
447	int res = eio_poll ();	734	int res = eio_poll ();
448		735
…		…
454		741
455	poll_wait ();	742	poll_wait ();
456	}	743	}
457	}	744	}
458		745
459	static void atfork_child (void)	746	static void ecb_cold
		747	reinit (void)
460	{	748	{
461	create_respipe ();	749	create_respipe ();
		750
		751	if (eio_init (want_poll, done_poll) < 0)
		752	croak ("IO::AIO: unable to initialise eio library");
462	}	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	/*****************************************************************************/
463		794
464	static SV *	795	static SV *
465	get_cb (SV *cb_sv)	796	get_cb (SV *cb_sv)
466	{	797	{
467	HV *st;	798	SvGETMAGIC (cb_sv);
468	GV *gvp;	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	{
469	CV *cv;	805	SV *cb_cv;
		806	aio_req req;
		807	int req_pri = next_pri;
		808	next_pri = EIO_PRI_DEFAULT;
470		809
471	if (!SvOK (cb_sv))	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
472	return 0;	819	return req;
473
474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
475
476	if (!cv)
477	croak ("IO::AIO callback must be undef or a CODE reference");
478
479	return (SV *)cv;
480	}	820	}
481		821
482	#define dREQ \	822	#define dREQ \
483	SV *cb_cv; \	823	aio_req req = dreq (callback); \
484	aio_req req; \
485	int req_pri = next_pri; \
486	next_pri = EIO_PRI_DEFAULT; \
487	\
488	cb_cv = get_cb (callback); \
489	\
490	Newz (0, req, 1, eio_req); \
491	if (!req) \
492	croak ("out of memory during eio_req allocation"); \
493	\
494	req->callback = SvREFCNT_inc (cb_cv); \
495	req->pri = req_pri
496		824
497	#define REQ_SEND \	825	#define REQ_SEND \
498	PUTBACK; \	826	PUTBACK; \
499	req_submit (req); \	827	req_submit (req); \
500	SPAGAIN; \	828	SPAGAIN; \
501	\	829	\
502	if (GIMME_V != G_VOID) \	830	if (GIMME_V != G_VOID) \
503	XPUSHs (req_sv (req, AIO_REQ_KLASS));	831	XPUSHs (req_sv (req, aio_req_stash));
504		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
505	MODULE = IO::AIO PACKAGE = IO::AIO	899	MODULE = IO::AIO PACKAGE = IO::AIO
506		900
507	PROTOTYPES: ENABLE	901	PROTOTYPES: ENABLE
508		902
509	BOOT:	903	BOOT:
510	{	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
511	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);
512		1138
513	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1139	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
514	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1140	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
515	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
516	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
517	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
518	#ifndef _WIN32
519	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
520	#endif
521		1141
522	create_respipe ();	1142	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
523		1143
524	if (eio_init (want_poll, done_poll) < 0)	1144	reinit ();
525	croak ("IO::AIO: unable to initialise eio library");
526
527	/* atfork child called in fifo order, so before eio's handler */
528	X_THREAD_ATFORK (0, 0, atfork_child);
529	}	1145	}
530		1146
531	void	1147	void
		1148	reinit ()
		1149	PROTOTYPE:
		1150
		1151	void
532	max_poll_reqs (int nreqs)	1152	max_poll_reqs (unsigned int nreqs)
533	PROTOTYPE: $	1153	PROTOTYPE: $
534	CODE:	1154	CODE:
535	eio_set_max_poll_reqs (nreqs);	1155	eio_set_max_poll_reqs (nreqs);
536		1156
537	void	1157	void
…		…
539	PROTOTYPE: $	1159	PROTOTYPE: $
540	CODE:	1160	CODE:
541	eio_set_max_poll_time (nseconds);	1161	eio_set_max_poll_time (nseconds);
542		1162
543	void	1163	void
544	min_parallel (int nthreads)	1164	min_parallel (unsigned int nthreads)
545	PROTOTYPE: $	1165	PROTOTYPE: $
546	CODE:	1166	CODE:
547	eio_set_min_parallel (nthreads);	1167	eio_set_min_parallel (nthreads);
548		1168
549	void	1169	void
550	max_parallel (int nthreads)	1170	max_parallel (unsigned int nthreads)
551	PROTOTYPE: $	1171	PROTOTYPE: $
552	CODE:	1172	CODE:
553	eio_set_max_parallel (nthreads);	1173	eio_set_max_parallel (nthreads);
554		1174
555	void	1175	void
556	max_idle (int nthreads)	1176	max_idle (unsigned int nthreads)
557	PROTOTYPE: $	1177	PROTOTYPE: $
558	CODE:	1178	CODE:
559	eio_set_max_idle (nthreads);	1179	eio_set_max_idle (nthreads);
560		1180
561	void	1181	void
		1182	idle_timeout (unsigned int seconds)
		1183	PROTOTYPE: $
		1184	CODE:
		1185	eio_set_idle_timeout (seconds);
		1186
		1187	void
562	max_outstanding (int maxreqs)	1188	max_outstanding (unsigned int maxreqs)
563	PROTOTYPE: $	1189	PROTOTYPE: $
564	CODE:	1190	CODE:
565	max_outstanding = maxreqs;	1191	max_outstanding = maxreqs;
566		1192
567	void	1193	void
568	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1194	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
569	PROTOTYPE: $$$;$
570	PPCODE:	1195	PPCODE:
571	{	1196	{
572	dREQ;	1197	dREQ;
573		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
574	req->type = EIO_OPEN;	1211	req->type = EIO_OPEN;
575	req->sv1 = newSVsv (pathname);	1212	req_set_path1 (req, pathname);
576	req->ptr1 = SvPVbyte_nolen (req->sv1);
577	req->int1 = flags;	1213	req->int1 = flags;
578	req->int2 = mode;	1214	req->int2 = mode;
579		1215
580	REQ_SEND;	1216	REQ_SEND;
581	}	1217	}
582		1218
583	void	1219	void
584	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1220	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
585	PROTOTYPE: $;$
586	ALIAS:	1221	ALIAS:
587	aio_fsync = EIO_FSYNC	1222	aio_fsync = EIO_FSYNC
588	aio_fdatasync = EIO_FDATASYNC	1223	aio_fdatasync = EIO_FDATASYNC
		1224	aio_syncfs = EIO_SYNCFS
589	PPCODE:	1225	PPCODE:
590	{	1226	{
		1227	int fd = s_fileno_croak (fh, 0);
591	dREQ;	1228	dREQ;
592		1229
593	req->type = ix;	1230	req->type = ix;
594	req->sv1 = newSVsv (fh);	1231	req->sv1 = newSVsv (fh);
595	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1232	req->int1 = fd;
596		1233
597	REQ_SEND (req);	1234	REQ_SEND;
598	}	1235	}
599		1236
600	void	1237	void
601	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)
602	PROTOTYPE: $;$
603	PPCODE:	1239	PPCODE:
604	{	1240	{
605	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1241	int fd = s_fileno_croak (fh, 0);
606	dREQ;	1242	dREQ;
607		1243
608	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))
609	{	1280	{
610	int pipefd [2];	1281	int pipefd [2];
611		1282
		1283	if (
		1284	#ifdef _WIN32
		1285	_pipe (pipefd, 1, _O_BINARY) < 0
		1286	#else
612	if (pipe (pipefd) < 0	1287	pipe (pipefd) < 0
613	|| close (pipefd [1]) < 0
614	|| 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	)
615	abort (); /*D*/	1292	abort (); /*D*/
616		1293
617	close_pipe = pipefd [0];	1294	close_fd = pipefd [0];
618	}	1295	}
619		1296
620	req->type = EIO_DUP2;	1297	req->type = EIO_DUP2;
621	req->int1 = close_pipe;	1298	req->int1 = close_fd;
622	req->sv2 = newSVsv (fh);	1299	req->sv2 = newSVsv (fh);
623	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1300	req->int2 = fd;
624		1301
625	REQ_SEND (req);	1302	REQ_SEND;
626	}	1303	}
627		1304
628	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
629	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)
630	ALIAS:	1323	ALIAS:
631	aio_read = EIO_READ	1324	aio_read = EIO_READ
632	aio_write = EIO_WRITE	1325	aio_write = EIO_WRITE
633	PROTOTYPE: $$$$$;$
634	PPCODE:	1326	PPCODE:
635	{	1327	{
636	STRLEN svlen;	1328	STRLEN svlen;
		1329	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
637	char *svptr = SvPVbyte (data, svlen);	1330	char *svptr = SvPVbyte (data, svlen);
638	UV len = SvUV (length);	1331	UV len = SvUV (length);
639
640	SvUPGRADE (data, SVt_PV);
641	SvPOK_on (data);
642		1332
643	if (dataoffset < 0)	1333	if (dataoffset < 0)
644	dataoffset += svlen;	1334	dataoffset += svlen;
645		1335
646	if (dataoffset < 0 || dataoffset > svlen)	1336	if (dataoffset < 0 || dataoffset > svlen)
…		…
652	if (!SvOK (length) || len + dataoffset > svlen)	1342	if (!SvOK (length) || len + dataoffset > svlen)
653	len = svlen - dataoffset;	1343	len = svlen - dataoffset;
654	}	1344	}
655	else	1345	else
656	{	1346	{
657	/* read: grow scalar as necessary */	1347	/* read: check type and grow scalar as necessary */
		1348	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
658	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");
659	}	1352	}
660
661	if (len < 0)
662	croak ("length must not be negative");
663		1353
664	{	1354	{
665	dREQ;	1355	dREQ;
666		1356
667	req->type = ix;	1357	req->type = ix;
668	req->sv1 = newSVsv (fh);	1358	req->sv1 = newSVsv (fh);
669	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))	1359	req->int1 = fd;
670	: IoOFP (sv_2io (fh)));
671	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1360	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
672	req->size = len;	1361	req->size = len;
673	req->sv2 = SvREFCNT_inc (data);	1362	req->sv2 = SvREFCNT_inc (data);
674	req->ptr2 = (char *)svptr + dataoffset;	1363	req->ptr2 = (char *)svptr + dataoffset;
675	req->stroffset = dataoffset;	1364	req->stroffset = dataoffset;
…		…
683	REQ_SEND;	1372	REQ_SEND;
684	}	1373	}
685	}	1374	}
686		1375
687	void	1376	void
688	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1377	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
689	PROTOTYPE: $$;$	1378	ALIAS:
		1379	aio_ioctl = EIO_IOCTL
		1380	aio_fcntl = EIO_FCNTL
690	PPCODE:	1381	PPCODE:
691	{	1382	{
692	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	{
693	dREQ;	1423	dREQ;
694		1424
695	req->type = EIO_READLINK;	1425	req->type = ix;
696	req->sv1 = newSVsv (path);	1426	req_set_path1 (req, pathname);
697	req->ptr1 = SvPVbyte_nolen (req->sv1);
698		1427
699	REQ_SEND;	1428	REQ_SEND;
700	}	1429	}
701		1430
702	void	1431	void
703	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)
704	PROTOTYPE: $$$$;$
705	PPCODE:	1433	PPCODE:
706	{	1434	{
		1435	int ifd = s_fileno_croak (in_fh , 0);
		1436	int ofd = s_fileno_croak (out_fh, 1);
707	dREQ;	1437	dREQ;
708		1438
709	req->type = EIO_SENDFILE;	1439	req->type = EIO_SENDFILE;
710	req->sv1 = newSVsv (out_fh);	1440	req->sv1 = newSVsv (out_fh);
711	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1441	req->int1 = ofd;
712	req->sv2 = newSVsv (in_fh);	1442	req->sv2 = newSVsv (in_fh);
713	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1443	req->int2 = ifd;
714	req->offs = SvVAL64 (in_offset);	1444	req->offs = in_offset;
715	req->size = length;	1445	req->size = length;
716		1446
717	REQ_SEND;	1447	REQ_SEND;
718	}	1448	}
719		1449
720	void	1450	void
721	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1451	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
722	PROTOTYPE: $$$;$
723	PPCODE:	1452	PPCODE:
724	{	1453	{
		1454	int fd = s_fileno_croak (fh, 0);
725	dREQ;	1455	dREQ;
726		1456
727	req->type = EIO_READAHEAD;	1457	req->type = EIO_READAHEAD;
728	req->sv1 = newSVsv (fh);	1458	req->sv1 = newSVsv (fh);
729	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1459	req->int1 = fd;
730	req->offs = SvVAL64 (offset);	1460	req->offs = offset;
731	req->size = length;	1461	req->size = length;
732		1462
733	REQ_SEND;	1463	REQ_SEND;
734	}	1464	}
735		1465
736	void	1466	void
737	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1467	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
738	ALIAS:	1468	ALIAS:
739	aio_stat = EIO_STAT	1469	aio_stat = EIO_STAT
740	aio_lstat = EIO_LSTAT	1470	aio_lstat = EIO_LSTAT
		1471	aio_statvfs = EIO_STATVFS
741	PPCODE:	1472	PPCODE:
742	{	1473	{
743	dREQ;	1474	dREQ;
744		1475
745	req->sv1 = newSVsv (fh_or_path);	1476	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
746
747	if (SvPOK (req->sv1))
748	{
749	req->type = ix;
750	req->ptr1 = SvPVbyte_nolen (req->sv1);
751	}
752	else
753	{
754	req->type = EIO_FSTAT;
755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
756	}
757		1477
758	REQ_SEND;	1478	REQ_SEND;
759	}	1479	}
760		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
761	void	1497	void
762	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)
763	PPCODE:	1499	PPCODE:
764	{	1500	{
765	dREQ;	1501	dREQ;
766		1502
767	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1503	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
768	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1504	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
769	req->sv1 = newSVsv (fh_or_path);	1505	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
770
771	if (SvPOK (req->sv1))
772	{
773	req->type = EIO_UTIME;
774	req->ptr1 = SvPVbyte_nolen (req->sv1);
775	}
776	else
777	{
778	req->type = EIO_FUTIME;
779	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780	}
781		1506
782	REQ_SEND;	1507	REQ_SEND;
783	}	1508	}
784		1509
785	void	1510	void
786	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)
787	PPCODE:	1512	PPCODE:
788	{	1513	{
789	dREQ;	1514	dREQ;
790		1515
791	req->sv1 = newSVsv (fh_or_path);
792	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1516	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
793		1517	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
794	if (SvPOK (req->sv1))
795	{
796	req->type = EIO_TRUNCATE;
797	req->ptr1 = SvPVbyte_nolen (req->sv1);
798	}
799	else
800	{
801	req->type = EIO_FTRUNCATE;
802	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
803	}
804		1518
805	REQ_SEND;	1519	REQ_SEND;
806	}	1520	}
807		1521
808	void	1522	void
809	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)
810	ALIAS:
811	aio_chmod = EIO_CHMOD
812	aio_mkdir = EIO_MKDIR
813	PPCODE:	1524	PPCODE:
814	{	1525	{
815	dREQ;	1526	dREQ;
816		1527
817	req->int2 = mode;	1528	req->int2 = mode;
818	req->sv1 = newSVsv (fh_or_path);	1529	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
819
820	if (SvPOK (req->sv1))
821	{
822	req->type = ix;
823	req->ptr1 = SvPVbyte_nolen (req->sv1);
824	}
825	else
826	{
827	req->type = EIO_FCHMOD;
828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
829	}
830		1530
831	REQ_SEND;	1531	REQ_SEND;
832	}	1532	}
833		1533
834	void	1534	void
835	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)
836	PPCODE:	1536	PPCODE:
837	{	1537	{
838	dREQ;	1538	dREQ;
839		1539
840	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1540	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
841	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1541	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
842	req->sv1 = newSVsv (fh_or_path);	1542	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
843
844	if (SvPOK (req->sv1))
845	{
846	req->type = EIO_CHOWN;
847	req->ptr1 = SvPVbyte_nolen (req->sv1);
848	}
849	else
850	{
851	req->type = EIO_FCHOWN;
852	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
853	}
854		1543
855	REQ_SEND;	1544	REQ_SEND;
856	}	1545	}
857		1546
858	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
859	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1578	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
860	ALIAS:	1579	ALIAS:
861	aio_unlink = EIO_UNLINK	1580	aio_unlink = EIO_UNLINK
862	aio_rmdir = EIO_RMDIR	1581	aio_rmdir = EIO_RMDIR
863	aio_readdir = EIO_READDIR	1582	aio_readdir = EIO_READDIR
864	PPCODE:	1583	PPCODE:
865	{	1584	{
866	dREQ;	1585	dREQ;
867		1586
868	req->type = ix;	1587	req->type = ix;
869	req->sv1 = newSVsv (pathname);	1588	req_set_path1 (req, pathname);
870	req->ptr1 = SvPVbyte_nolen (req->sv1);
871		1589
872	REQ_SEND;	1590	REQ_SEND;
873	}	1591	}
874		1592
875	void	1593	void
876	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1594	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
877	ALIAS:	1595	ALIAS:
878	aio_link = EIO_LINK	1596	aio_link = EIO_LINK
879	aio_symlink = EIO_SYMLINK	1597	aio_symlink = EIO_SYMLINK
880	aio_rename = EIO_RENAME	1598	aio_rename = EIO_RENAME
881	PPCODE:	1599	PPCODE:
882	{	1600	{
		1601	eio_wd wd2 = 0;
883	dREQ;	1602	dREQ;
884		1603
885	req->type = ix;	1604	req->type = ix;
886	req->sv1 = newSVsv (oldpath);	1605	req_set_path1 (req, oldpath);
887	req->ptr1 = SvPVbyte_nolen (req->sv1);	1606	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
888	req->sv2 = newSVsv (newpath);	1607	req->int3 = (long)wd2;
889	req->ptr2 = SvPVbyte_nolen (req->sv2);
890		1608
891	REQ_SEND;	1609	REQ_SEND;
892	}	1610	}
893		1611
894	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
895	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)
896	PPCODE:	1630	PPCODE:
897	{	1631	{
898	dREQ;	1632	dREQ;
899		1633
900	req->type = EIO_MKNOD;	1634	req->type = EIO_MKNOD;
901	req->sv1 = newSVsv (pathname);
902	req->ptr1 = SvPVbyte_nolen (req->sv1);
903	req->int2 = (mode_t)mode;	1635	req->int2 = (mode_t)mode;
904	req->offs = dev;	1636	req->offs = dev;
		1637	req_set_path1 (req, pathname);
905		1638
906	REQ_SEND;	1639	REQ_SEND;
907	}	1640	}
908		1641
909	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
910	aio_busy (double delay, SV *callback=&PL_sv_undef)	1743	aio_busy (double delay, SV *callback = &PL_sv_undef)
911	PPCODE:	1744	PPCODE:
912	{	1745	{
913	dREQ;	1746	dREQ;
914		1747
915	req->type = EIO_BUSY;	1748	req->type = EIO_BUSY;
…		…
917		1750
918	REQ_SEND;	1751	REQ_SEND;
919	}	1752	}
920		1753
921	void	1754	void
922	aio_group (SV *callback=&PL_sv_undef)	1755	aio_group (SV *callback = &PL_sv_undef)
923	PROTOTYPE: ;$
924	PPCODE:	1756	PPCODE:
925	{	1757	{
926	dREQ;	1758	dREQ;
927		1759
928	req->type = EIO_GROUP;	1760	req->type = EIO_GROUP;
929		1761
		1762	PUTBACK;
930	req_submit (req);	1763	req_submit (req);
		1764	SPAGAIN;
		1765
931	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1766	XPUSHs (req_sv (req, aio_grp_stash));
932	}	1767	}
933		1768
934	void	1769	void
935	aio_nop (SV *callback=&PL_sv_undef)	1770	aio_nop (SV *callback = &PL_sv_undef)
936	ALIAS:	1771	ALIAS:
937	aio_nop = EIO_NOP	1772	aio_nop = EIO_NOP
938	aio_sync = EIO_SYNC	1773	aio_sync = EIO_SYNC
939	PPCODE:	1774	PPCODE:
940	{	1775	{
…		…
944		1779
945	REQ_SEND;	1780	REQ_SEND;
946	}	1781	}
947		1782
948	int	1783	int
949	aioreq_pri (int pri = 0)	1784	aioreq_pri (int pri = NO_INIT)
950	PROTOTYPE: ;$
951	CODE:	1785	CODE:
952	RETVAL = next_pri;	1786	RETVAL = next_pri;
953	if (items > 0)	1787	if (items > 0)
954	{	1788	{
955	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1789	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
967	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1801	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
968	next_pri = nice;	1802	next_pri = nice;
969		1803
970	void	1804	void
971	flush ()	1805	flush ()
972	PROTOTYPE:
973	CODE:	1806	CODE:
974	while (eio_nreqs ())	1807	while (eio_nreqs ())
975	{	1808	{
976	poll_wait ();	1809	poll_wait ();
977	poll_cb ();	1810	poll_cb ();
978	}	1811	}
979		1812
980	int	1813	int
981	poll()	1814	poll ()
982	PROTOTYPE:
983	CODE:	1815	CODE:
984	poll_wait ();	1816	poll_wait ();
985	RETVAL = poll_cb ();	1817	RETVAL = poll_cb ();
986	OUTPUT:	1818	OUTPUT:
987	RETVAL	1819	RETVAL
988		1820
989	int	1821	int
990	poll_fileno()	1822	poll_fileno ()
991	PROTOTYPE:
992	CODE:	1823	CODE:
993	RETVAL = respipe [0];	1824	RETVAL = s_epipe_fd (&respipe);
994	OUTPUT:	1825	OUTPUT:
995	RETVAL	1826	RETVAL
996		1827
997	int	1828	int
998	poll_cb(...)	1829	poll_cb (...)
999	PROTOTYPE:	1830	PROTOTYPE:
1000	CODE:	1831	CODE:
1001	RETVAL = poll_cb ();	1832	RETVAL = poll_cb ();
1002	OUTPUT:	1833	OUTPUT:
1003	RETVAL	1834	RETVAL
1004		1835
1005	void	1836	void
1006	poll_wait()	1837	poll_wait ()
1007	PROTOTYPE:
1008	CODE:	1838	CODE:
1009	poll_wait ();	1839	poll_wait ();
1010		1840
1011	int	1841	int
1012	nreqs()	1842	nreqs ()
1013	PROTOTYPE:
1014	CODE:	1843	CODE:
1015	RETVAL = eio_nreqs ();	1844	RETVAL = eio_nreqs ();
1016	OUTPUT:	1845	OUTPUT:
1017	RETVAL	1846	RETVAL
1018		1847
1019	int	1848	int
1020	nready()	1849	nready ()
1021	PROTOTYPE:
1022	CODE:	1850	CODE:
1023	RETVAL = eio_nready ();	1851	RETVAL = eio_nready ();
1024	OUTPUT:	1852	OUTPUT:
1025	RETVAL	1853	RETVAL
1026		1854
1027	int	1855	int
1028	npending()	1856	npending ()
1029	PROTOTYPE:
1030	CODE:	1857	CODE:
1031	RETVAL = eio_npending ();	1858	RETVAL = eio_npending ();
1032	OUTPUT:	1859	OUTPUT:
1033	RETVAL	1860	RETVAL
1034		1861
1035	int	1862	int
1036	nthreads()	1863	nthreads ()
1037	PROTOTYPE:
1038	CODE:	1864	CODE:
1039	RETVAL = eio_nthreads ();	1865	RETVAL = eio_nthreads ();
1040	OUTPUT:	1866	OUTPUT:
1041	RETVAL	1867	RETVAL
1042		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
1043	void _on_next_submit (SV *cb)	2132	void _on_next_submit (SV *cb)
1044	CODE:	2133	CODE:
1045	SvREFCNT_dec (on_next_submit);	2134	SvREFCNT_dec (on_next_submit);
1046	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2135	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1047		2136
1048	PROTOTYPES: DISABLE	2137	PROTOTYPES: DISABLE
1049		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
1050	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2167	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1051		2168
1052	void	2169	void
1053	cancel (aio_req_ornot req)	2170	cancel (aio_req_ornot req)
1054	CODE:	2171	CODE:
1055	eio_cancel (req);	2172	eio_cancel (req);
1056		2173
1057	void	2174	void
1058	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2175	cb (aio_req_ornot req, SV *callback = NO_INIT)
1059	PPCODE:	2176	PPCODE:
1060	{	2177	{
1061	if (GIMME_V != G_VOID)	2178	if (GIMME_V != G_VOID)
1062	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);	2179	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1063		2180
…		…
1108	AV *av;	2225	AV *av;
1109		2226
1110	grp->errorno = errno;	2227	grp->errorno = errno;
1111		2228
1112	av = newAV ();	2229	av = newAV ();
		2230	av_extend (av, items - 1);
1113		2231
1114	for (i = 1; i < items; ++i )	2232	for (i = 1; i < items; ++i )
1115	av_push (av, newSVsv (ST (i)));	2233	av_push (av, newSVsv (ST (i)));
1116		2234
1117	SvREFCNT_dec (grp->sv1);	2235	SvREFCNT_dec (grp->sv1);
…		…
1127	limit (aio_req grp, int limit)	2245	limit (aio_req grp, int limit)
1128	CODE:	2246	CODE:
1129	eio_grp_limit (grp, limit);	2247	eio_grp_limit (grp, limit);
1130		2248
1131	void	2249	void
1132	feed (aio_req grp, SV *callback=&PL_sv_undef)	2250	feed (aio_req grp, SV *callback = &PL_sv_undef)
1133	CODE:	2251	CODE:
1134	{	2252	{
1135	SvREFCNT_dec (grp->sv2);	2253	SvREFCNT_dec (grp->sv2);
1136	grp->sv2 = newSVsv (callback);	2254	grp->sv2 = newSVsv (callback);
1137	grp->feed = aio_grp_feed;	2255	grp->feed = aio_grp_feed;

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