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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.133 by root, Wed Oct 22 18:15:36 2008 UTC vs.
Revision 1.253 by root, Tue Feb 20 04:32:59 2018 UTC

…		…
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
18	/* perl namespace pollution */	38	/* perl namespace pollution */
19	#undef VERSION	39	#undef VERSION
20
21	#ifdef _WIN32
22
23	# define EIO_STRUCT_DIRENT Direntry_t
24	# undef malloc
25	# undef free
26
27	// perl overrides all those nice win32 functions
28	# undef open
29	# undef read
30	# undef write
31	# undef send
32	# undef recv
33	# undef stat
34	# undef fstat
35	# define lstat stat
36	# undef truncate
37	# undef ftruncate
38	# undef open
39	# undef close
40	# undef unlink
41	# undef rmdir
42	# undef rename
43	# undef lseek
44
45	# define chown(a,b,c) (errno = ENOSYS, -1)
46	# define fchown(a,b,c) (errno = ENOSYS, -1)
47	# define fchmod(a,b) (errno = ENOSYS, -1)
48	# define symlink(a,b) (errno = ENOSYS, -1)
49	# define readlink(a,b,c) (errno = ENOSYS, -1)
50	# define mknod(a,b,c) (errno = ENOSYS, -1)
51	# define truncate(a,b) (errno = ENOSYS, -1)
52	# define ftruncate(fd,o) chsize ((fd), (o))
53	# define fsync(fd) _commit (fd)
54	# define opendir(fd) (errno = ENOSYS, 0)
55	# define readdir(fd) (errno = ENOSYS, -1)
56	# define closedir(fd) (errno = ENOSYS, -1)
57	# define mkdir(a,b) mkdir (a)
58
59	#else
60
61	# include <sys/time.h>
62	# include <sys/select.h>
63	# include <unistd.h>
64	# include <utime.h>
65	# include <signal.h>
66	# define EIO_STRUCT_DIRENT struct dirent
67
68	#endif
69		40
70	/* perl stupidly overrides readdir and maybe others */	41	/* perl stupidly overrides readdir and maybe others */
71	/* with thread-unsafe versions, imagine that :( */	42	/* with thread-unsafe versions, imagine that :( */
72	#undef readdir	43	#undef readdir
73	#undef opendir	44	#undef opendir
74	#undef closedir	45	#undef closedir
75		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
76	#define EIO_STRUCT_STAT Stat_t	82	#define EIO_STRUCT_STATI64
77		83
78	/* use NV for 32 bit perls as it allows larger offsets */
79	#if IVSIZE >= 8
80	# define SvVAL64 SvIV
81	#else	84	#else
82	# define SvVAL64 SvNV	85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
83	#endif	94	#endif
84		95
85	/*****************************************************************************/	96	/*****************************************************************************/
86		97
87	#if __GNUC__ >= 3	98	#if __GNUC__ >= 3
…		…
93	#define expect_false(expr) expect ((expr) != 0, 0)	104	#define expect_false(expr) expect ((expr) != 0, 0)
94	#define expect_true(expr) expect ((expr) != 0, 1)	105	#define expect_true(expr) expect ((expr) != 0, 1)
95		106
96	/*****************************************************************************/	107	/*****************************************************************************/
97		108
98	static HV *stash;	109	#include "libeio/config.h"
		110
		111	#if HAVE_EVENTFD
		112	# include <sys/eventfd.h>
		113	#endif
		114
		115	#if HAVE_RLIMITS
		116	#include <sys/time.h>
		117	#include <sys/resource.h>
		118	#endif
		119
99	typedef SV SV8; /* byte-sv, used for argument-checking */	120	typedef SV SV8; /* byte-sv, used for argument-checking */
		121	typedef int aio_rfd; /* read file desriptor */
		122	typedef int aio_wfd; /* write file descriptor */
100		123
101	#define AIO_REQ_KLASS "IO::AIO::REQ"	124	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
102	#define AIO_GRP_KLASS "IO::AIO::GRP"
103		125
104	#define EIO_REQ_MEMBERS \	126	#define EIO_REQ_MEMBERS \
105	SV *callback; \	127	SV *callback; \
106	SV *sv1, *sv2; \	128	SV *sv1, *sv2; \
		129	SV *sv3, *sv4; \
107	STRLEN stroffset; \	130	STRLEN stroffset; \
108	SV *self;	131	SV *self;
109		132
110	#define EIO_NO_WRAPPERS 1	133	#define EIO_NO_WRAPPERS 1
111		134
…		…
114	static int req_invoke (eio_req *req);	137	static int req_invoke (eio_req *req);
115	#define EIO_FINISH(req) req_invoke (req)	138	#define EIO_FINISH(req) req_invoke (req)
116	static void req_destroy (eio_req *grp);	139	static void req_destroy (eio_req *grp);
117	#define EIO_DESTROY(req) req_destroy (req)	140	#define EIO_DESTROY(req) req_destroy (req)
118		141
		142	#include "libeio/eio.c"
		143
		144	#if !HAVE_POSIX_FADVISE
		145	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#if !HAVE_POSIX_MADVISE
		149	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		150	#endif
		151
		152	#ifndef MAP_ANONYMOUS
		153	# ifdef MAP_ANON
		154	# define MAP_ANONYMOUS MAP_ANON
		155	# else
		156	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		157	# endif
		158	#endif
		159
		160	/* defines all sorts of constants to 0 unless they are already defined */
		161	/* also provides const_iv_ and const_niv_ macros for them */
		162	#include "def0.h"
		163
		164	#ifndef makedev
		165	# define makedev(maj,min) (((maj) << 8) | (min))
		166	#endif
		167	#ifndef major
		168	# define major(dev) ((dev) >> 8)
		169	#endif
		170	#ifndef minor
		171	# define minor(dev) ((dev) & 0xff)
		172	#endif
		173
		174	#if PAGESIZE <= 0
		175	# define PAGESIZE sysconf (_SC_PAGESIZE)
		176	#endif
		177
		178	/*****************************************************************************/
		179
		180	#if !_POSIX_MAPPED_FILES
		181	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		182	# define munmap(addr,length) EIO_ENOSYS ()
		183	#endif
		184
		185	#if !_POSIX_MEMORY_PROTECTION
		186	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		187	#endif
		188
		189	#define FOREIGN_MAGIC PERL_MAGIC_ext
		190
		191	static int ecb_cold
		192	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		193	{
		194	int old_errno = errno;
		195	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		196	errno = old_errno;
		197
		198	mg->mg_obj = 0; /* just in case */
		199
		200	SvREADONLY_off (sv);
		201
		202	if (SvPVX (sv) != mg->mg_ptr)
		203	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		204
		205	SvCUR_set (sv, 0);
		206	SvPVX (sv) = 0;
		207	SvOK_off (sv);
		208
		209	return 0;
		210	}
		211
		212	static MGVTBL mmap_vtbl = {
		213	0, 0, 0, 0, mmap_free
		214	};
		215
		216	static int ecb_cold
		217	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		218	{
		219	free (mg->mg_ptr);
		220	mg->mg_obj = 0; /* just in case */
		221
		222	SvREADONLY_off (sv);
		223
		224	if (SvPVX (sv) != mg->mg_ptr)
		225	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		226
		227	SvCUR_set (sv, 0);
		228	SvPVX (sv) = 0;
		229	SvOK_off (sv);
		230
		231	return 0;
		232	}
		233
		234	static MGVTBL sysfree_vtbl = {
		235	0, 0, 0, 0, sysfree_free
		236	};
		237
		238	/*****************************************************************************/
		239
		240	/* helper: set scalar to foreign ptr with custom free */
		241	static void
		242	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		243	{
		244	sv_force_normal (sv);
		245
		246	/* we store the length in mg_obj, as namlen is I32 :/ */
		247	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		248	->mg_obj = (SV *)length;
		249
		250	SvUPGRADE (sv, SVt_PV); /* nop... */
		251
		252	if (SvLEN (sv))
		253	Safefree (SvPVX (sv));
		254
		255	SvPVX (sv) = (char *)addr;
		256	SvCUR_set (sv, length);
		257	SvLEN_set (sv, 0);
		258	SvPOK_only (sv);
		259	}
		260
		261	static void
		262	sv_clear_foreign (SV *sv)
		263	{
		264	/* todo: iterate over magic and only free ours, but of course */
		265	/* the perl5porters will call that (correct) behaviour buggy */
		266	sv_unmagic (sv, FOREIGN_MAGIC);
		267	}
		268
		269	/*****************************************************************************/
		270
		271	static void
		272	fiemap (eio_req *req)
		273	{
		274	req->result = -1;
		275
		276	#if HAVE_FIEMAP
		277	/* assume some c99 */
		278	struct fiemap *fiemap = 0;
		279	size_t end_offset;
		280	int count = req->int3;
		281
		282	req->flags |= EIO_FLAG_PTR1_FREE;
		283
		284	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		285	/* increase in 3.5kb steps */
		286	if (count < 0)
		287	count = 8;
		288
		289	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		290	errno = ENOMEM;
		291	if (!fiemap)
		292	return;
		293
		294	req->ptr1 = fiemap;
		295
		296	fiemap->fm_start = req->offs;
		297	fiemap->fm_length = req->size;
		298	fiemap->fm_flags = req->int2;
		299	fiemap->fm_extent_count = count;
		300
		301	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		302	return;
		303
		304	if (req->int3 >= 0 /* not autosizing */
		305	|| !fiemap->fm_mapped_extents /* no more extents */
		306	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		307	goto done;
		308
		309	/* else we have to loop -
		310	* it would be tempting (actually I tried that first) to just query the
		311	* number of extents needed, but linux often feels like not returning all
		312	* extents, without telling us it left any out. this complicates
		313	* this quite a bit.
		314	*/
		315
		316	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		317
		318	for (;;)
		319	{
		320	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		321	char scratch[3072];
		322	struct fiemap *incmap = (struct fiemap *)scratch;
		323
		324	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		325	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		326	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		327	incmap->fm_flags = fiemap->fm_flags;
		328	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		329
		330	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		331	return;
		332
		333	if (!incmap->fm_mapped_extents)
		334	goto done;
		335
		336	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		337	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		338	errno = ENOMEM;
		339	if (!fiemap)
		340	return;
		341
		342	req->ptr1 = fiemap;
		343
		344	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		345	{
		346	struct fiemap_extent *e = incmap->fm_extents + count;
		347
		348	if (e->fe_logical + e->fe_length >= end_offset)
		349	goto done;
		350
		351	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		352
		353	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		354	goto done;
		355
		356	}
		357	}
		358
		359	done:
		360	req->result = 0;
		361
		362	#else
		363	errno = ENOSYS;
		364	#endif
		365	}
		366
		367	/*****************************************************************************/
		368
119	enum {	369	enum {
120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	370	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	371	};
122		372
123	#include "libeio/eio.c"
124
125	typedef eio_req *aio_req;	373	typedef eio_req *aio_req;
126	typedef eio_req *aio_req_ornot;	374	typedef eio_req *aio_req_ornot;
		375	typedef eio_wd aio_wd;
127		376
128	static SV *on_next_submit;	377	static SV *on_next_submit;
129	static int next_pri = EIO_PRI_DEFAULT;	378	static int next_pri = EIO_PRI_DEFAULT;
130	static int max_outstanding;	379	static int max_outstanding;
131		380
132	static int respipe_osf [2], respipe [2] = { -1, -1 };	381	static s_epipe respipe;
133		382
134	static void req_destroy (aio_req req);	383	static void req_destroy (aio_req req);
135	static void req_cancel (aio_req req);	384	static void req_cancel (aio_req req);
136		385
137	static void want_poll (void)	386	static void
		387	want_poll (void)
138	{	388	{
139	/* write a dummy byte to the pipe so fh becomes ready */	389	/* write a dummy byte to the pipe so fh becomes ready */
140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);	390	s_epipe_signal (&respipe);
141	}	391	}
142		392
143	static void done_poll (void)	393	static void
		394	done_poll (void)
144	{	395	{
145	/* read any signals sent by the worker threads */	396	/* read any signals sent by the worker threads */
146	char buf [4];	397	s_epipe_drain (&respipe);
147	while (respipe_read (respipe [0], buf, 4) == 4)
148	;
149	}	398	}
150		399
151	/* must be called at most once */	400	/* must be called at most once */
152	static SV *req_sv (aio_req req, const char *klass)	401	static SV *
		402	req_sv (aio_req req, HV *stash)
153	{	403	{
154	if (!req->self)	404	if (!req->self)
155	{	405	{
156	req->self = (SV *)newHV ();	406	req->self = (SV *)newHV ();
157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	407	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
158	}	408	}
159		409
160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	410	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
161	}	411	}
162		412
163	static aio_req SvAIO_REQ (SV *sv)	413	static SV *
		414	newSVaio_wd (aio_wd wd)
		415	{
		416	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		417	}
		418
		419	static aio_req
		420	SvAIO_REQ (SV *sv)
164	{	421	{
165	MAGIC *mg;	422	MAGIC *mg;
166		423
167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	424	if (!SvROK (sv)
		425	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		426	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		427	&& SvSTASH (SvRV (sv)) != aio_req_stash
		428	&& !sv_derived_from (sv, "IO::AIO::REQ")))
168	croak ("object of class " AIO_REQ_KLASS " expected");	429	croak ("object of class IO::AIO::REQ expected");
169		430
170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	431	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
171		432
172	return mg ? (aio_req)mg->mg_ptr : 0;	433	return mg ? (aio_req)mg->mg_ptr : 0;
173	}	434	}
174		435
		436	static aio_wd
		437	SvAIO_WD (SV *sv)
		438	{
		439	if (!SvROK (sv)
		440	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		441	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		442	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		443
		444	return (aio_wd)(long)SvIVX (SvRV (sv));
		445	}
		446
		447	static SV *
		448	newmortalFH (int fd, int flags)
		449	{
		450	if (fd < 0)
		451	return &PL_sv_undef;
		452
		453	GV *gv = (GV *)sv_newmortal ();
		454	char sym[64];
		455	int symlen;
		456
		457	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		458	gv_init (gv, aio_stash, sym, symlen, 0);
		459
		460	symlen = snprintf (
		461	sym,
		462	sizeof (sym),
		463	"%s&=%d",
		464	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		465	fd
		466	);
		467
		468	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		469	? (SV *)gv : &PL_sv_undef;
		470	}
		471
		472	static void
175	static void aio_grp_feed (aio_req grp)	473	aio_grp_feed (aio_req grp)
176	{	474	{
177	if (grp->sv2 && SvOK (grp->sv2))	475	if (grp->sv2 && SvOK (grp->sv2))
178	{	476	{
179	dSP;	477	dSP;
180		478
181	ENTER;	479	ENTER;
182	SAVETMPS;	480	SAVETMPS;
183	PUSHMARK (SP);	481	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	482	XPUSHs (req_sv (grp, aio_grp_stash));
185	PUTBACK;	483	PUTBACK;
186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	484	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	485	SPAGAIN;
188	FREETMPS;	486	FREETMPS;
189	LEAVE;	487	LEAVE;
190	}	488	}
191	}	489	}
192		490
		491	static void
193	static void req_submit (eio_req *req)	492	req_submit (eio_req *req)
194	{	493	{
195	eio_submit (req);	494	eio_submit (req);
196		495
197	if (expect_false (on_next_submit))	496	if (expect_false (on_next_submit))
198	{	497	{
…		…
205	PUTBACK;	504	PUTBACK;
206	call_sv (cb, G_DISCARD | G_EVAL);	505	call_sv (cb, G_DISCARD | G_EVAL);
207	}	506	}
208	}	507	}
209		508
		509	static int
210	static int req_invoke (eio_req *req)	510	req_invoke (eio_req *req)
211	{	511	{
212	dSP;
213
214	if (req->flags & FLAG_SV2_RO_OFF)	512	if (req->flags & FLAG_SV2_RO_OFF)
215	SvREADONLY_off (req->sv2);	513	SvREADONLY_off (req->sv2);
216		514
217	if (!EIO_CANCELLED (req) && req->callback)	515	if (!EIO_CANCELLED (req) && req->callback)
218	{	516	{
		517	dSP;
		518	static SV *sv_result_cache; /* caches the result integer SV */
		519	SV *sv_result;
		520
219	ENTER;	521	ENTER;
220	SAVETMPS;	522	SAVETMPS;
221	PUSHMARK (SP);	523	PUSHMARK (SP);
222	EXTEND (SP, 1);	524	EXTEND (SP, 1);
223		525
		526	/* do not recreate the result IV from scratch each time */
		527	if (expect_true (sv_result_cache))
		528	{
		529	sv_result = sv_result_cache; sv_result_cache = 0;
		530	SvIV_set (sv_result, req->result);
		531	SvIOK_only (sv_result);
		532	}
		533	else
		534	{
		535	sv_result = newSViv (req->result);
		536	SvREADONLY_on (sv_result);
		537	}
		538
224	switch (req->type)	539	switch (req->type)
225	{	540	{
		541	case EIO_WD_OPEN:
		542	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		543	break;
		544
226	case EIO_READDIR:	545	case EIO_READDIR:
227	{	546	{
228	SV *rv = &PL_sv_undef;	547	SV *rv = &PL_sv_undef;
229		548
230	if (req->result >= 0)	549	if (req->result >= 0)
231	{	550	{
232	int i;	551	int i;
233	char *buf = req->ptr2;	552	char *names = (char *)req->ptr2;
		553	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
234	AV *av = newAV ();	554	AV *av = newAV ();
235		555
236	av_extend (av, req->result - 1);	556	av_extend (av, req->result - 1);
237		557
238	for (i = 0; i < req->result; ++i)	558	for (i = 0; i < req->result; ++i)
239	{	559	{
240	SV *sv = newSVpv (buf, 0);	560	if (req->int1 & EIO_READDIR_DENTS)
		561	{
		562	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
241		563
		564	if (req->int1 & EIO_READDIR_CUSTOM2)
		565	{
		566	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		567	AV *avent = newAV ();
		568
		569	av_extend (avent, 2);
		570
		571	if (!sv_type [ent->type])
		572	{
		573	sv_type [ent->type] = newSViv (ent->type);
		574	SvREADONLY_on (sv_type [ent->type]);
		575	}
		576
		577	av_store (avent, 0, namesv);
		578	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		579	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		580
		581	av_store (av, i, newRV_noinc ((SV *)avent));
		582	}
		583	else
242	av_store (av, i, sv);	584	av_store (av, i, namesv);
		585
		586	++ent;
		587	}
		588	else
		589	{
		590	SV *name = newSVpv (names, 0);
		591	av_store (av, i, name);
243	buf += SvCUR (sv) + 1;	592	names += SvCUR (name) + 1;
		593	}
244	}	594	}
245		595
246	rv = sv_2mortal (newRV_noinc ((SV *)av));	596	rv = sv_2mortal (newRV_noinc ((SV *)av));
247	}	597	}
248		598
249	PUSHs (rv);	599	PUSHs (rv);
		600
		601	if (req->int1 & EIO_READDIR_CUSTOM1)
		602	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
250	}	603	}
251	break;	604	break;
252		605
253	case EIO_OPEN:	606	case EIO_OPEN:
		607	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		608	break;
		609
		610	case EIO_STATVFS:
		611	case EIO_FSTATVFS:
254	{	612	{
255	/* convert fd to fh */
256	SV *fh = &PL_sv_undef;	613	SV *rv = &PL_sv_undef;
257		614
		615	#ifndef _WIN32
258	if (req->result >= 0)	616	if (req->result >= 0)
259	{	617	{
		618	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
260	GV *gv = (GV *)sv_newmortal ();	619	HV *hv = newHV ();
261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	620	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
262	char sym [64];	621	* chooses to make it a struct.
263	int symlen;
264		622	*/
265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	623	unsigned long fsid = 0;
266	gv_init (gv, stash, sym, symlen, 0);	624	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
267		625
268	symlen = snprintf (	626	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		627
276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	628	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
277	fh = (SV *)gv;	629	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		630	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		631	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		632	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		633	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		634	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		635	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		636	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		637	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		638	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
278	}	639	}
		640	#endif
279		641
280	PUSHs (fh);	642	PUSHs (rv);
281	}	643	}
		644
282	break;	645	break;
283		646
284	case EIO_GROUP:	647	case EIO_GROUP:
285	req->int1 = 2; /* mark group as finished */	648	req->int1 = 2; /* mark group as finished */
286		649
…		…
298	case EIO_NOP:	661	case EIO_NOP:
299	case EIO_BUSY:	662	case EIO_BUSY:
300	break;	663	break;
301		664
302	case EIO_READLINK:	665	case EIO_READLINK:
		666	case EIO_REALPATH:
303	if (req->result > 0)	667	if (req->result > 0)
304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	668	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
305	break;	669	break;
306		670
307	case EIO_STAT:	671	case EIO_STAT:
308	case EIO_LSTAT:	672	case EIO_LSTAT:
309	case EIO_FSTAT:	673	case EIO_FSTAT:
310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	674	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		675
311	PL_laststatval = req->result;	676	if (!(PL_laststatval = req->result))
		677	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	678	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
313	PUSHs (sv_2mortal (newSViv (req->result)));	679
		680	PUSHs (sv_result);
314	break;	681	break;
315		682
		683	case EIO_SEEK:
		684	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		685	break;
		686
316	case EIO_READ:	687	case EIO_READ:
		688	{
317	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	689	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
318	*SvEND (req->sv2) = 0;	690	*SvEND (req->sv2) = 0;
319	PUSHs (sv_2mortal (newSViv (req->result)));	691	SvPOK_only (req->sv2);
		692	SvSETMAGIC (req->sv2);
		693	PUSHs (sv_result);
		694	}
320	break;	695	break;
321		696
322	case EIO_DUP2:	697	case EIO_SLURP:
		698	{
		699	if (req->result >= 0)
		700	{
		701	/* if length was originally not known, we steal the malloc'ed memory */
		702	if (req->flags & EIO_FLAG_PTR2_FREE)
		703	{
		704	req->flags &= ~EIO_FLAG_PTR2_FREE;
		705	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		706	}
		707	else
		708	{
		709	SvCUR_set (req->sv2, req->result);
		710	*SvEND (req->sv2) = 0;
		711	SvPOK_only (req->sv2);
		712	}
		713
		714	SvSETMAGIC (req->sv2);
		715	}
		716
		717	PUSHs (sv_result);
		718	}
		719	break;
		720
		721	case EIO_CUSTOM:
		722	if (req->feed == fiemap)
		723	{
		724	#if HAVE_FIEMAP
		725	if (!req->result)
		726	{
		727	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		728
		729	if (fiemap->fm_extent_count)
		730	{
		731	AV *av = newAV ();
		732	int i;
		733
		734	while (fiemap->fm_mapped_extents)
		735	{
		736	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		737	AV *ext_av = newAV ();
		738
		739	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		740	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		741	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		742	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		743
		744	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		745	}
		746
		747	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		748	}
		749	else
		750	{
		751	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		752	PUSHs (sv_result);
		753	}
		754	}
		755	#endif
		756	}
		757	else
		758	PUSHs (sv_result);
		759	break;
		760
		761	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
323	if (req->result > 0)	762	if (req->result > 0)
324	req->result = 0;	763	SvIV_set (sv_result, 0);
325	/* FALLTHROUGH */	764	/* FALLTHROUGH */
326		765
327	default:	766	default:
328	PUSHs (sv_2mortal (newSViv (req->result)));	767	PUSHs (sv_result);
329	break;	768	break;
330	}	769	}
331		770
332	errno = req->errorno;	771	errno = req->errorno;
333		772
334	PUTBACK;	773	PUTBACK;
335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	774	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
336	SPAGAIN;	775	SPAGAIN;
337		776
		777	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		778	SvREFCNT_dec (sv_result);
		779	else
		780	sv_result_cache = sv_result;
		781
338	FREETMPS;	782	FREETMPS;
339	LEAVE;	783	LEAVE;
340		784
341	PUTBACK;	785	PUTBACK;
342	}	786	}
343		787
344	return !!SvTRUE (ERRSV);	788	return !!SvTRUE (ERRSV);
345	}	789	}
346		790
		791	static void
347	static void req_destroy (aio_req req)	792	req_destroy (aio_req req)
348	{	793	{
349	if (req->self)	794	if (req->self)
350	{	795	{
351	sv_unmagic (req->self, PERL_MAGIC_ext);	796	sv_unmagic (req->self, PERL_MAGIC_ext);
352	SvREFCNT_dec (req->self);	797	SvREFCNT_dec (req->self);
353	}	798	}
354		799
355	SvREFCNT_dec (req->sv1);	800	SvREFCNT_dec (req->sv1);
356	SvREFCNT_dec (req->sv2);	801	SvREFCNT_dec (req->sv2);
		802	SvREFCNT_dec (req->sv3);
		803	SvREFCNT_dec (req->sv4);
357	SvREFCNT_dec (req->callback);	804	SvREFCNT_dec (req->callback);
358		805
359	Safefree (req);	806	free (req);
360	}	807	}
361		808
		809	static void
362	static void req_cancel_subs (aio_req grp)	810	req_cancel_subs (aio_req grp)
363	{	811	{
364	aio_req sub;
365
366	if (grp->type != EIO_GROUP)	812	if (grp->type != EIO_GROUP)
367	return;	813	return;
368		814
369	SvREFCNT_dec (grp->sv2);	815	SvREFCNT_dec (grp->sv2);
370	grp->sv2 = 0;	816	grp->sv2 = 0;
371		817
372	eio_grp_cancel (grp);	818	eio_grp_cancel (grp);
373	}	819	}
374		820
375	#ifdef USE_SOCKETS_AS_HANDLES	821	static void ecb_cold
376	# define TO_SOCKET(x) (win32_get_osfhandle (x))	822	create_respipe (void)
377	#else	823	{
378	# define TO_SOCKET(x) (x)	824	if (s_epipe_renew (&respipe))
379	#endif	825	croak ("IO::AIO: unable to initialize result pipe");
		826	}
380		827
381	static void	828	static void
382	create_respipe (void)	829	poll_wait (void)
383	{	830	{
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 ())	831	while (eio_nreqs ())
424	{	832	{
425	int size;	833	int size;
426		834
427	X_LOCK (reslock);	835	X_LOCK (EIO_POOL->reslock);
428	size = res_queue.size;	836	size = EIO_POOL->res_queue.size;
429	X_UNLOCK (reslock);	837	X_UNLOCK (EIO_POOL->reslock);
430		838
431	if (size)	839	if (size)
432	return;	840	return;
433		841
434	etp_maybe_start_thread ();	842	etp_maybe_start_thread (EIO_POOL);
435		843
436	FD_ZERO (&rfd);	844	s_epipe_wait (&respipe);
437	FD_SET (respipe [0], &rfd);
438
439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
440	}	845	}
441	}	846	}
442		847
443	static int poll_cb (void)	848	static int
		849	poll_cb (void)
444	{	850	{
445	for (;;)	851	for (;;)
446	{	852	{
447	int res = eio_poll ();	853	int res = eio_poll ();
448		854
…		…
454		860
455	poll_wait ();	861	poll_wait ();
456	}	862	}
457	}	863	}
458		864
459	static void atfork_child (void)	865	static void ecb_cold
		866	reinit (void)
460	{	867	{
461	create_respipe ();	868	create_respipe ();
		869
		870	if (eio_init (want_poll, done_poll) < 0)
		871	croak ("IO::AIO: unable to initialise eio library");
462	}	872	}
		873
		874	/*****************************************************************************/
463		875
464	static SV *	876	static SV *
465	get_cb (SV *cb_sv)	877	get_cb (SV *cb_sv)
466	{	878	{
467	HV *st;	879	SvGETMAGIC (cb_sv);
468	GV *gvp;	880	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		881	}
		882
		883	static aio_req ecb_noinline
		884	dreq (SV *callback)
		885	{
469	CV *cv;	886	SV *cb_cv;
		887	aio_req req;
		888	int req_pri = next_pri;
		889	next_pri = EIO_PRI_DEFAULT;
470		890
471	if (!SvOK (cb_sv))	891	cb_cv = get_cb (callback);
		892
		893	req = calloc (sizeof (*req), 1);
		894	if (!req)
		895	croak ("out of memory during eio_req allocation");
		896
		897	req->callback = SvREFCNT_inc (cb_cv);
		898	req->pri = req_pri;
		899
472	return 0;	900	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	}	901	}
481		902
482	#define dREQ \	903	#define dREQ \
483	SV *cb_cv; \	904	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		905
497	#define REQ_SEND \	906	#define REQ_SEND \
498	PUTBACK; \	907	PUTBACK; \
499	req_submit (req); \	908	req_submit (req); \
500	SPAGAIN; \	909	SPAGAIN; \
501	\	910	\
502	if (GIMME_V != G_VOID) \	911	if (GIMME_V != G_VOID) \
503	XPUSHs (req_sv (req, AIO_REQ_KLASS));	912	XPUSHs (req_sv (req, aio_req_stash));
504		913
		914	ecb_inline void
		915	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		916	{
		917	if (expect_false (SvROK (path)))
		918	{
		919	SV *rv = SvRV (path);
		920	SV *wdob;
		921
		922	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		923	{
		924	path = AvARRAY (rv)[1];
		925	wdob = AvARRAY (rv)[0];
		926
		927	if (SvOK (wdob))
		928	{
		929	*wd = SvAIO_WD (wdob);
		930	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		931	}
		932	else
		933	*wd = EIO_INVALID_WD;
		934	}
		935	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		936	{
		937	*wd = (aio_wd)(long)SvIVX (rv);
		938	*wdsv = SvREFCNT_inc_NN (rv);
		939	*ptr = ".";
		940	return; /* path set to "." */
		941	}
		942	else
		943	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		944	}
		945
		946	*pathsv = newSVsv (path);
		947	*ptr = SvPVbyte_nolen (*pathsv);
		948	}
		949
		950	static void ecb_noinline
		951	req_set_path1 (aio_req req, SV *path)
		952	{
		953	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		954	}
		955
		956	static void ecb_noinline
		957	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		958	{
		959	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		960
		961	switch (SvTYPE (rv))
		962	{
		963	case SVt_PVIO:
		964	case SVt_PVLV:
		965	case SVt_PVGV:
		966	req->type = type_fh;
		967	req->sv1 = newSVsv (fh_or_path);
		968	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		969	break;
		970
		971	default:
		972	req->type = type_path;
		973	req_set_path1 (req, fh_or_path);
		974	break;
		975	}
		976	}
		977
		978	XS(boot_IO__AIO) ecb_cold;
		979
505	MODULE = IO::AIO PACKAGE = IO::AIO	980	MODULE = IO::AIO PACKAGE = IO::AIO
506		981
507	PROTOTYPES: ENABLE	982	PROTOTYPES: ENABLE
508		983
509	BOOT:	984	BOOT:
510	{	985	{
		986	static const struct {
		987	const char *name;
		988	IV iv;
		989	} *civ, const_iv[] = {
		990	# define const_niv(name, value) { # name, (IV) value },
		991	# define const_iv(name) { # name, (IV) name },
		992	# define const_eio(name) { # name, (IV) EIO_ ## name },
		993
		994	/* you have to re-run ./gendef0 after adding/removing any constants here */
		995	/* the first block can be undef if missing */
		996	const_iv (ENOSYS)
		997	const_iv (EXDEV)
		998	const_iv (EBADR)
		999
		1000	/* for lseek */
		1001	const_iv (SEEK_DATA)
		1002	const_iv (SEEK_HOLE)
		1003
		1004	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1005	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1006	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1007	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1008	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1009	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1010
		1011	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1012	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1013	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1014	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1015	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1016
		1017	/* the second block will be 0 when missing */
		1018	const_iv (O_RDONLY)
		1019	const_iv (O_WRONLY)
		1020	const_iv (O_RDWR)
		1021	const_iv (O_CREAT)
		1022	const_iv (O_TRUNC)
		1023	const_iv (O_EXCL)
		1024	const_iv (O_APPEND)
		1025
		1026	const_iv (O_ASYNC)
		1027	const_iv (O_DIRECT)
		1028	const_iv (O_NOATIME)
		1029
		1030	const_iv (O_CLOEXEC)
		1031	const_iv (O_NOCTTY)
		1032	const_iv (O_NOFOLLOW)
		1033	const_iv (O_NONBLOCK)
		1034	const_iv (O_EXEC)
		1035	const_iv (O_SEARCH)
		1036	const_iv (O_DIRECTORY)
		1037	const_iv (O_DSYNC)
		1038	const_iv (O_RSYNC)
		1039	const_iv (O_SYNC)
		1040	const_iv (O_PATH)
		1041	const_iv (O_TMPFILE)
		1042	const_iv (O_TTY_INIT)
		1043
		1044	const_iv (S_IFIFO)
		1045	const_iv (S_IFCHR)
		1046	const_iv (S_IFBLK)
		1047	const_iv (S_IFLNK)
		1048	const_iv (S_IFREG)
		1049	const_iv (S_IFDIR)
		1050	const_iv (S_IFWHT)
		1051	const_iv (S_IFSOCK)
		1052	const_iv (S_IFMT)
		1053
		1054	const_iv (ST_RDONLY)
		1055	const_iv (ST_NOSUID)
		1056	const_iv (ST_NODEV)
		1057	const_iv (ST_NOEXEC)
		1058	const_iv (ST_SYNCHRONOUS)
		1059	const_iv (ST_MANDLOCK)
		1060	const_iv (ST_WRITE)
		1061	const_iv (ST_APPEND)
		1062	const_iv (ST_IMMUTABLE)
		1063	const_iv (ST_NOATIME)
		1064	const_iv (ST_NODIRATIME)
		1065	const_iv (ST_RELATIME)
		1066
		1067	const_iv (PROT_NONE)
		1068	const_iv (PROT_EXEC)
		1069	const_iv (PROT_READ)
		1070	const_iv (PROT_WRITE)
		1071
		1072	const_iv (MAP_PRIVATE)
		1073	const_iv (MAP_SHARED)
		1074	const_iv (MAP_FIXED)
		1075	const_iv (MAP_ANONYMOUS)
		1076
		1077	/* linuxish */
		1078	const_iv (MAP_LOCKED)
		1079	const_iv (MAP_NORESERVE)
		1080	const_iv (MAP_POPULATE)
		1081	const_iv (MAP_NONBLOCK)
		1082	const_iv (MAP_GROWSDOWN)
		1083	const_iv (MAP_32BIT)
		1084	const_iv (MAP_HUGETLB)
		1085	const_iv (MAP_STACK)
		1086
		1087	const_iv (F_DUPFD_CLOEXEC)
		1088
		1089	const_iv (F_OFD_GETLK)
		1090	const_iv (F_OFD_SETLK)
		1091	const_iv (F_OFD_GETLKW)
		1092
		1093	const_iv (FIFREEZE)
		1094	const_iv (FITHAW)
		1095	const_iv (FITRIM)
		1096	const_iv (FICLONE)
		1097	const_iv (FICLONERANGE)
		1098	const_iv (FIDEDUPERANGE)
		1099
		1100	const_iv (FS_IOC_GETFLAGS)
		1101	const_iv (FS_IOC_SETFLAGS)
		1102	const_iv (FS_IOC_GETVERSION)
		1103	const_iv (FS_IOC_SETVERSION)
		1104	const_iv (FS_IOC_FIEMAP)
		1105	const_iv (FS_IOC_FSGETXATTR)
		1106	const_iv (FS_IOC_FSSETXATTR)
		1107	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1108	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1109	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1110
		1111	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1112
		1113	const_iv (FS_SECRM_FL)
		1114	const_iv (FS_UNRM_FL)
		1115	const_iv (FS_COMPR_FL)
		1116	const_iv (FS_SYNC_FL)
		1117	const_iv (FS_IMMUTABLE_FL)
		1118	const_iv (FS_APPEND_FL)
		1119	const_iv (FS_NODUMP_FL)
		1120	const_iv (FS_NOATIME_FL)
		1121	const_iv (FS_DIRTY_FL)
		1122	const_iv (FS_COMPRBLK_FL)
		1123	const_iv (FS_NOCOMP_FL)
		1124	const_iv (FS_ENCRYPT_FL)
		1125	const_iv (FS_BTREE_FL)
		1126	const_iv (FS_INDEX_FL)
		1127	const_iv (FS_JOURNAL_DATA_FL)
		1128	const_iv (FS_NOTAIL_FL)
		1129	const_iv (FS_DIRSYNC_FL)
		1130	const_iv (FS_TOPDIR_FL)
		1131	const_iv (FS_FL_USER_MODIFIABLE)
		1132
		1133	const_iv (FS_XFLAG_REALTIME)
		1134	const_iv (FS_XFLAG_PREALLOC)
		1135	const_iv (FS_XFLAG_IMMUTABLE)
		1136	const_iv (FS_XFLAG_APPEND)
		1137	const_iv (FS_XFLAG_SYNC)
		1138	const_iv (FS_XFLAG_NOATIME)
		1139	const_iv (FS_XFLAG_NODUMP)
		1140	const_iv (FS_XFLAG_RTINHERIT)
		1141	const_iv (FS_XFLAG_PROJINHERIT)
		1142	const_iv (FS_XFLAG_NOSYMLINKS)
		1143	const_iv (FS_XFLAG_EXTSIZE)
		1144	const_iv (FS_XFLAG_EXTSZINHERIT)
		1145	const_iv (FS_XFLAG_NODEFRAG)
		1146	const_iv (FS_XFLAG_FILESTREAM)
		1147	const_iv (FS_XFLAG_DAX)
		1148	const_iv (FS_XFLAG_HASATTR)
		1149
		1150	const_iv (FIEMAP_FLAG_SYNC)
		1151	const_iv (FIEMAP_FLAG_XATTR)
		1152	const_iv (FIEMAP_FLAGS_COMPAT)
		1153	const_iv (FIEMAP_EXTENT_LAST)
		1154	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1155	const_iv (FIEMAP_EXTENT_DELALLOC)
		1156	const_iv (FIEMAP_EXTENT_ENCODED)
		1157	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1158	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1159	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1160	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1161	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1162	const_iv (FIEMAP_EXTENT_MERGED)
		1163	const_iv (FIEMAP_EXTENT_SHARED)
		1164
		1165	const_iv (SPLICE_F_MOVE)
		1166	const_iv (SPLICE_F_NONBLOCK)
		1167	const_iv (SPLICE_F_MORE)
		1168	const_iv (SPLICE_F_GIFT)
		1169
		1170	const_iv (EFD_CLOEXEC)
		1171	const_iv (EFD_NONBLOCK)
		1172	const_iv (EFD_SEMAPHORE)
		1173
		1174	/* these are libeio constants, and are independent of gendef0 */
		1175	const_eio (SEEK_SET)
		1176	const_eio (SEEK_CUR)
		1177	const_eio (SEEK_END)
		1178
		1179	const_eio (MCL_FUTURE)
		1180	const_eio (MCL_CURRENT)
		1181
		1182	const_eio (MS_ASYNC)
		1183	const_eio (MS_INVALIDATE)
		1184	const_eio (MS_SYNC)
		1185
		1186	const_eio (MT_MODIFY)
		1187
		1188	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1189	const_eio (SYNC_FILE_RANGE_WRITE)
		1190	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1191
		1192	const_eio (FALLOC_FL_KEEP_SIZE)
		1193	const_eio (FALLOC_FL_PUNCH_HOLE)
		1194	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1195	const_eio (FALLOC_FL_ZERO_RANGE)
		1196	const_eio (FALLOC_FL_INSERT_RANGE)
		1197	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1198
		1199	const_eio (RENAME_NOREPLACE)
		1200	const_eio (RENAME_EXCHANGE)
		1201	const_eio (RENAME_WHITEOUT)
		1202
		1203	const_eio (READDIR_DENTS)
		1204	const_eio (READDIR_DIRS_FIRST)
		1205	const_eio (READDIR_STAT_ORDER)
		1206	const_eio (READDIR_FOUND_UNKNOWN)
		1207
		1208	const_eio (DT_UNKNOWN)
		1209	const_eio (DT_FIFO)
		1210	const_eio (DT_CHR)
		1211	const_eio (DT_DIR)
		1212	const_eio (DT_BLK)
		1213	const_eio (DT_REG)
		1214	const_eio (DT_LNK)
		1215	const_eio (DT_SOCK)
		1216	const_eio (DT_WHT)
		1217	};
		1218
511	stash = gv_stashpv ("IO::AIO", 1);	1219	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1220	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1221	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1222	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
512		1223
513	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1224	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
514	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1225	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	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
522	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
523	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
524	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
525		1226
526	create_respipe ();	1227	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
527		1228
528	if (eio_init (want_poll, done_poll) < 0)	1229	reinit ();
529	croak ("IO::AIO: unable to initialise eio library");
530
531	/* atfork child called in fifo order, so before eio's handler */
532	X_THREAD_ATFORK (0, 0, atfork_child);
533	}	1230	}
534		1231
535	void	1232	void
		1233	reinit ()
		1234	PROTOTYPE:
		1235
		1236	void
536	max_poll_reqs (int nreqs)	1237	max_poll_reqs (unsigned int nreqs)
537	PROTOTYPE: $	1238	PROTOTYPE: $
538	CODE:	1239	CODE:
539	eio_set_max_poll_reqs (nreqs);	1240	eio_set_max_poll_reqs (nreqs);
540		1241
541	void	1242	void
…		…
543	PROTOTYPE: $	1244	PROTOTYPE: $
544	CODE:	1245	CODE:
545	eio_set_max_poll_time (nseconds);	1246	eio_set_max_poll_time (nseconds);
546		1247
547	void	1248	void
548	min_parallel (int nthreads)	1249	min_parallel (unsigned int nthreads)
549	PROTOTYPE: $	1250	PROTOTYPE: $
550	CODE:	1251	CODE:
551	eio_set_min_parallel (nthreads);	1252	eio_set_min_parallel (nthreads);
552		1253
553	void	1254	void
554	max_parallel (int nthreads)	1255	max_parallel (unsigned int nthreads)
555	PROTOTYPE: $	1256	PROTOTYPE: $
556	CODE:	1257	CODE:
557	eio_set_max_parallel (nthreads);	1258	eio_set_max_parallel (nthreads);
558		1259
559	void	1260	void
560	max_idle (int nthreads)	1261	max_idle (unsigned int nthreads)
561	PROTOTYPE: $	1262	PROTOTYPE: $
562	CODE:	1263	CODE:
563	eio_set_max_idle (nthreads);	1264	eio_set_max_idle (nthreads);
564		1265
565	void	1266	void
		1267	idle_timeout (unsigned int seconds)
		1268	PROTOTYPE: $
		1269	CODE:
		1270	eio_set_idle_timeout (seconds);
		1271
		1272	void
566	max_outstanding (int maxreqs)	1273	max_outstanding (unsigned int maxreqs)
567	PROTOTYPE: $	1274	PROTOTYPE: $
568	CODE:	1275	CODE:
569	max_outstanding = maxreqs;	1276	max_outstanding = maxreqs;
570		1277
571	void	1278	void
572	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1279	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
573	PROTOTYPE: $$$;$
574	PPCODE:	1280	PPCODE:
575	{	1281	{
576	dREQ;	1282	dREQ;
577		1283
		1284	req->type = EIO_WD_OPEN;
		1285	req_set_path1 (req, pathname);
		1286
		1287	REQ_SEND;
		1288	}
		1289
		1290	void
		1291	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1292	PPCODE:
		1293	{
		1294	dREQ;
		1295
578	req->type = EIO_OPEN;	1296	req->type = EIO_OPEN;
579	req->sv1 = newSVsv (pathname);	1297	req_set_path1 (req, pathname);
580	req->ptr1 = SvPVbyte_nolen (req->sv1);
581	req->int1 = flags;	1298	req->int1 = flags;
582	req->int2 = mode;	1299	req->int2 = mode;
583		1300
584	REQ_SEND;	1301	REQ_SEND;
585	}	1302	}
586		1303
587	void	1304	void
588	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1305	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
589	PROTOTYPE: $;$
590	ALIAS:	1306	ALIAS:
591	aio_fsync = EIO_FSYNC	1307	aio_fsync = EIO_FSYNC
592	aio_fdatasync = EIO_FDATASYNC	1308	aio_fdatasync = EIO_FDATASYNC
		1309	aio_syncfs = EIO_SYNCFS
593	PPCODE:	1310	PPCODE:
594	{	1311	{
		1312	int fd = s_fileno_croak (fh, 0);
595	dREQ;	1313	dREQ;
596		1314
597	req->type = ix;	1315	req->type = ix;
598	req->sv1 = newSVsv (fh);	1316	req->sv1 = newSVsv (fh);
599	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1317	req->int1 = fd;
600		1318
601	REQ_SEND (req);	1319	REQ_SEND;
602	}	1320	}
603		1321
604	void	1322	void
605	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)	1323	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
606	PROTOTYPE: $$$$;$
607	PPCODE:	1324	PPCODE:
608	{	1325	{
		1326	int fd = s_fileno_croak (fh, 0);
609	dREQ;	1327	dREQ;
610		1328
611	req->type = EIO_SYNC_FILE_RANGE;	1329	req->type = EIO_SYNC_FILE_RANGE;
612	req->sv1 = newSVsv (fh);	1330	req->sv1 = newSVsv (fh);
613	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1331	req->int1 = fd;
614	req->offs = SvVAL64 (offset);	1332	req->offs = offset;
615	req->size = SvVAL64 (nbytes);	1333	req->size = nbytes;
616	req->int2 = flags;	1334	req->int2 = flags;
617		1335
618	REQ_SEND (req);	1336	REQ_SEND;
619	}	1337	}
620		1338
621	void	1339	void
622	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1340	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
623	PROTOTYPE: $;$
624	PPCODE:	1341	PPCODE:
625	{	1342	{
626	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	1343	int fd = s_fileno_croak (fh, 0);
627	dREQ;	1344	dREQ;
628		1345
629	if (close_pipe < 0)	1346	req->type = EIO_FALLOCATE;
		1347	req->sv1 = newSVsv (fh);
		1348	req->int1 = fd;
		1349	req->int2 = mode;
		1350	req->offs = offset;
		1351	req->size = len;
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1361	int fd = s_fileno_croak (fh, 0);
		1362	dREQ;
		1363
		1364	if (expect_false (close_fd < 0))
630	{	1365	{
631	int pipefd [2];	1366	int pipefd [2];
632		1367
		1368	if (
		1369	#ifdef _WIN32
		1370	_pipe (pipefd, 1, _O_BINARY) < 0
		1371	#else
633	if (pipe (pipefd) < 0	1372	pipe (pipefd) < 0
634	|| close (pipefd [1]) < 0
635	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1373	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1374	#endif
		1375	|| close (pipefd [1]) < 0
		1376	)
636	abort (); /*D*/	1377	abort (); /*D*/
637		1378
638	close_pipe = pipefd [0];	1379	close_fd = pipefd [0];
639	}	1380	}
640		1381
641	req->type = EIO_DUP2;	1382	req->type = EIO_DUP2;
642	req->int1 = close_pipe;	1383	req->int1 = close_fd;
643	req->sv2 = newSVsv (fh);	1384	req->sv2 = newSVsv (fh);
644	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1385	req->int2 = fd;
645		1386
646	REQ_SEND (req);	1387	REQ_SEND;
647	}	1388	}
648		1389
649	void	1390	void
		1391	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1392	PPCODE:
		1393	{
		1394	int fd = s_fileno_croak (fh, 0);
		1395	dREQ;
		1396
		1397	req->type = EIO_SEEK;
		1398	req->sv1 = newSVsv (fh);
		1399	req->int1 = fd;
		1400	req->offs = SvVAL64 (offset);
		1401	req->int2 = whence;
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
650	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1407	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
651	ALIAS:	1408	ALIAS:
652	aio_read = EIO_READ	1409	aio_read = EIO_READ
653	aio_write = EIO_WRITE	1410	aio_write = EIO_WRITE
654	PROTOTYPE: $$$$$;$
655	PPCODE:	1411	PPCODE:
656	{	1412	{
657	STRLEN svlen;	1413	STRLEN svlen;
		1414	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
658	char *svptr = SvPVbyte (data, svlen);	1415	char *svptr = SvPVbyte (data, svlen);
659	UV len = SvUV (length);	1416	UV len = SvUV (length);
660
661	SvUPGRADE (data, SVt_PV);
662	SvPOK_on (data);
663		1417
664	if (dataoffset < 0)	1418	if (dataoffset < 0)
665	dataoffset += svlen;	1419	dataoffset += svlen;
666		1420
667	if (dataoffset < 0 || dataoffset > svlen)	1421	if (dataoffset < 0 || dataoffset > svlen)
…		…
673	if (!SvOK (length) || len + dataoffset > svlen)	1427	if (!SvOK (length) || len + dataoffset > svlen)
674	len = svlen - dataoffset;	1428	len = svlen - dataoffset;
675	}	1429	}
676	else	1430	else
677	{	1431	{
678	/* read: grow scalar as necessary */	1432	/* read: check type and grow scalar as necessary */
		1433	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
679	svptr = SvGROW (data, len + dataoffset + 1);	1434	svptr = sv_grow (data, len + dataoffset + 1);
		1435	else if (SvCUR (data) < len + dataoffset)
		1436	croak ("length + dataoffset outside of scalar, and cannot grow");
680	}	1437	}
681
682	if (len < 0)
683	croak ("length must not be negative");
684		1438
685	{	1439	{
686	dREQ;	1440	dREQ;
687		1441
688	req->type = ix;	1442	req->type = ix;
689	req->sv1 = newSVsv (fh);	1443	req->sv1 = newSVsv (fh);
690	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))	1444	req->int1 = fd;
691	: IoOFP (sv_2io (fh)));
692	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1445	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
693	req->size = len;	1446	req->size = len;
694	req->sv2 = SvREFCNT_inc (data);	1447	req->sv2 = SvREFCNT_inc (data);
695	req->ptr2 = (char *)svptr + dataoffset;	1448	req->ptr2 = (char *)svptr + dataoffset;
696	req->stroffset = dataoffset;	1449	req->stroffset = dataoffset;
…		…
704	REQ_SEND;	1457	REQ_SEND;
705	}	1458	}
706	}	1459	}
707		1460
708	void	1461	void
709	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1462	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
710	PROTOTYPE: $$;$	1463	ALIAS:
		1464	aio_ioctl = EIO_IOCTL
		1465	aio_fcntl = EIO_FCNTL
711	PPCODE:	1466	PPCODE:
712	{	1467	{
713	SV *data;	1468	int fd = s_fileno_croak (fh, 0);
		1469	char *svptr;
		1470
		1471	if (SvPOK (arg) || !SvNIOK (arg))
		1472	{
		1473	STRLEN svlen;
		1474	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1475	#ifdef IOCPARM_LEN
		1476	STRLEN need = IOCPARM_LEN (request);
		1477	#else
		1478	STRLEN need = 256;
		1479	#endif
		1480
		1481	if (svlen < need)
		1482	svptr = SvGROW (arg, need);
		1483	}
		1484	else
		1485	svptr = (char *)SvIV (arg);
		1486
		1487	{
		1488	dREQ;
		1489
		1490	req->type = ix;
		1491	req->sv1 = newSVsv (fh);
		1492	req->int1 = fd;
		1493	req->int2 = (long)request;
		1494	req->sv2 = SvREFCNT_inc (arg);
		1495	req->ptr2 = svptr;
		1496
		1497	REQ_SEND;
		1498	}
		1499	}
		1500
		1501	void
		1502	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1503	ALIAS:
		1504	aio_readlink = EIO_READLINK
		1505	aio_realpath = EIO_REALPATH
		1506	PPCODE:
		1507	{
714	dREQ;	1508	dREQ;
715		1509
716	req->type = EIO_READLINK;	1510	req->type = ix;
717	req->sv1 = newSVsv (path);	1511	req_set_path1 (req, pathname);
718	req->ptr1 = SvPVbyte_nolen (req->sv1);
719		1512
720	REQ_SEND;	1513	REQ_SEND;
721	}	1514	}
722		1515
723	void	1516	void
724	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1517	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
725	PROTOTYPE: $$$$;$
726	PPCODE:	1518	PPCODE:
727	{	1519	{
		1520	int ifd = s_fileno_croak (in_fh , 0);
		1521	int ofd = s_fileno_croak (out_fh, 1);
728	dREQ;	1522	dREQ;
729		1523
730	req->type = EIO_SENDFILE;	1524	req->type = EIO_SENDFILE;
731	req->sv1 = newSVsv (out_fh);	1525	req->sv1 = newSVsv (out_fh);
732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1526	req->int1 = ofd;
733	req->sv2 = newSVsv (in_fh);	1527	req->sv2 = newSVsv (in_fh);
734	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1528	req->int2 = ifd;
735	req->offs = SvVAL64 (in_offset);	1529	req->offs = in_offset;
736	req->size = length;	1530	req->size = length;
737		1531
738	REQ_SEND;	1532	REQ_SEND;
739	}	1533	}
740		1534
741	void	1535	void
742	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1536	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
743	PROTOTYPE: $$$;$
744	PPCODE:	1537	PPCODE:
745	{	1538	{
		1539	int fd = s_fileno_croak (fh, 0);
746	dREQ;	1540	dREQ;
747		1541
748	req->type = EIO_READAHEAD;	1542	req->type = EIO_READAHEAD;
749	req->sv1 = newSVsv (fh);	1543	req->sv1 = newSVsv (fh);
750	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1544	req->int1 = fd;
751	req->offs = SvVAL64 (offset);	1545	req->offs = offset;
752	req->size = length;	1546	req->size = length;
753		1547
754	REQ_SEND;	1548	REQ_SEND;
755	}	1549	}
756		1550
757	void	1551	void
758	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1552	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
759	ALIAS:	1553	ALIAS:
760	aio_stat = EIO_STAT	1554	aio_stat = EIO_STAT
761	aio_lstat = EIO_LSTAT	1555	aio_lstat = EIO_LSTAT
		1556	aio_statvfs = EIO_STATVFS
762	PPCODE:	1557	PPCODE:
763	{	1558	{
764	dREQ;	1559	dREQ;
765		1560
766	req->sv1 = newSVsv (fh_or_path);	1561	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
767
768	if (SvPOK (req->sv1))
769	{
770	req->type = ix;
771	req->ptr1 = SvPVbyte_nolen (req->sv1);
772	}
773	else
774	{
775	req->type = EIO_FSTAT;
776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
777	}
778		1562
779	REQ_SEND;	1563	REQ_SEND;
780	}	1564	}
781		1565
		1566	UV
		1567	major (UV dev)
		1568	ALIAS:
		1569	minor = 1
		1570	CODE:
		1571	RETVAL = ix ? minor (dev) : major (dev);
		1572	OUTPUT:
		1573	RETVAL
		1574
		1575	UV
		1576	makedev (UV maj, UV min)
		1577	CODE:
		1578	RETVAL = makedev (maj, min);
		1579	OUTPUT:
		1580	RETVAL
		1581
782	void	1582	void
783	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1583	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
784	PPCODE:	1584	PPCODE:
785	{	1585	{
786	dREQ;	1586	dREQ;
787		1587
788	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1588	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
789	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1589	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
790	req->sv1 = newSVsv (fh_or_path);	1590	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
791
792	if (SvPOK (req->sv1))
793	{
794	req->type = EIO_UTIME;
795	req->ptr1 = SvPVbyte_nolen (req->sv1);
796	}
797	else
798	{
799	req->type = EIO_FUTIME;
800	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
801	}
802		1591
803	REQ_SEND;	1592	REQ_SEND;
804	}	1593	}
805		1594
806	void	1595	void
807	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1596	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
808	PPCODE:	1597	PPCODE:
809	{	1598	{
810	dREQ;	1599	dREQ;
811		1600
812	req->sv1 = newSVsv (fh_or_path);
813	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1601	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
814		1602	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
815	if (SvPOK (req->sv1))
816	{
817	req->type = EIO_TRUNCATE;
818	req->ptr1 = SvPVbyte_nolen (req->sv1);
819	}
820	else
821	{
822	req->type = EIO_FTRUNCATE;
823	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
824	}
825		1603
826	REQ_SEND;	1604	REQ_SEND;
827	}	1605	}
828		1606
829	void	1607	void
830	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1608	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
831	ALIAS:
832	aio_chmod = EIO_CHMOD
833	aio_mkdir = EIO_MKDIR
834	PPCODE:	1609	PPCODE:
835	{	1610	{
836	dREQ;	1611	dREQ;
837		1612
838	req->int2 = mode;	1613	req->int2 = mode;
839	req->sv1 = newSVsv (fh_or_path);	1614	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
840
841	if (SvPOK (req->sv1))
842	{
843	req->type = ix;
844	req->ptr1 = SvPVbyte_nolen (req->sv1);
845	}
846	else
847	{
848	req->type = EIO_FCHMOD;
849	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
850	}
851		1615
852	REQ_SEND;	1616	REQ_SEND;
853	}	1617	}
854		1618
855	void	1619	void
856	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1620	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
857	PPCODE:	1621	PPCODE:
858	{	1622	{
859	dREQ;	1623	dREQ;
860		1624
861	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1625	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
862	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1626	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
863	req->sv1 = newSVsv (fh_or_path);	1627	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
864
865	if (SvPOK (req->sv1))
866	{
867	req->type = EIO_CHOWN;
868	req->ptr1 = SvPVbyte_nolen (req->sv1);
869	}
870	else
871	{
872	req->type = EIO_FCHOWN;
873	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
874	}
875		1628
876	REQ_SEND;	1629	REQ_SEND;
877	}	1630	}
878		1631
879	void	1632	void
		1633	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1634	PPCODE:
		1635	{
		1636	dREQ;
		1637
		1638	req->type = EIO_READDIR;
		1639	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1640
		1641	if (flags & EIO_READDIR_DENTS)
		1642	req->int1 |= EIO_READDIR_CUSTOM2;
		1643
		1644	req_set_path1 (req, pathname);
		1645
		1646	REQ_SEND;
		1647	}
		1648
		1649	void
		1650	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1651	PPCODE:
		1652	{
		1653	dREQ;
		1654
		1655	req->type = EIO_MKDIR;
		1656	req->int2 = mode;
		1657	req_set_path1 (req, pathname);
		1658
		1659	REQ_SEND;
		1660	}
		1661
		1662	void
880	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1663	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
881	ALIAS:	1664	ALIAS:
882	aio_unlink = EIO_UNLINK	1665	aio_unlink = EIO_UNLINK
883	aio_rmdir = EIO_RMDIR	1666	aio_rmdir = EIO_RMDIR
884	aio_readdir = EIO_READDIR	1667	aio_readdir = EIO_READDIR
885	PPCODE:	1668	PPCODE:
886	{	1669	{
887	dREQ;	1670	dREQ;
888		1671
889	req->type = ix;	1672	req->type = ix;
890	req->sv1 = newSVsv (pathname);	1673	req_set_path1 (req, pathname);
891	req->ptr1 = SvPVbyte_nolen (req->sv1);
892		1674
893	REQ_SEND;	1675	REQ_SEND;
894	}	1676	}
895		1677
896	void	1678	void
897	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1679	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
898	ALIAS:	1680	ALIAS:
899	aio_link = EIO_LINK	1681	aio_link = EIO_LINK
900	aio_symlink = EIO_SYMLINK	1682	aio_symlink = EIO_SYMLINK
901	aio_rename = EIO_RENAME	1683	aio_rename = EIO_RENAME
902	PPCODE:	1684	PPCODE:
903	{	1685	{
		1686	eio_wd wd2 = 0;
904	dREQ;	1687	dREQ;
905		1688
906	req->type = ix;	1689	req->type = ix;
907	req->sv1 = newSVsv (oldpath);	1690	req_set_path1 (req, oldpath);
908	req->ptr1 = SvPVbyte_nolen (req->sv1);	1691	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
909	req->sv2 = newSVsv (newpath);	1692	req->int3 = (long)wd2;
910	req->ptr2 = SvPVbyte_nolen (req->sv2);
911		1693
912	REQ_SEND;	1694	REQ_SEND;
913	}	1695	}
914		1696
915	void	1697	void
		1698	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1699	PPCODE:
		1700	{
		1701	eio_wd wd2 = 0;
		1702	dREQ;
		1703
		1704	req->type = EIO_RENAME;
		1705	req_set_path1 (req, oldpath);
		1706	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1707	req->int2 = flags;
		1708	req->int3 = (long)wd2;
		1709
		1710	REQ_SEND;
		1711	}
		1712
		1713	void
916	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1714	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
917	PPCODE:	1715	PPCODE:
918	{	1716	{
919	dREQ;	1717	dREQ;
920		1718
921	req->type = EIO_MKNOD;	1719	req->type = EIO_MKNOD;
922	req->sv1 = newSVsv (pathname);
923	req->ptr1 = SvPVbyte_nolen (req->sv1);
924	req->int2 = (mode_t)mode;	1720	req->int2 = (mode_t)mode;
925	req->offs = dev;	1721	req->offs = dev;
		1722	req_set_path1 (req, pathname);
926		1723
927	REQ_SEND;	1724	REQ_SEND;
928	}	1725	}
929		1726
930	void	1727	void
		1728	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1729	ALIAS:
		1730	aio_mtouch = EIO_MTOUCH
		1731	aio_msync = EIO_MSYNC
		1732	PPCODE:
		1733	{
		1734	STRLEN svlen;
		1735	char *svptr = SvPVbyte (data, svlen);
		1736	UV len = SvUV (length);
		1737
		1738	if (flags < 0)
		1739	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1740
		1741	if (offset < 0)
		1742	offset += svlen;
		1743
		1744	if (offset < 0 || offset > svlen)
		1745	croak ("offset outside of scalar");
		1746
		1747	if (!SvOK (length) || len + offset > svlen)
		1748	len = svlen - offset;
		1749
		1750	{
		1751	dREQ;
		1752
		1753	req->type = ix;
		1754	req->sv2 = SvREFCNT_inc (data);
		1755	req->ptr2 = (char *)svptr + offset;
		1756	req->size = len;
		1757	req->int1 = flags;
		1758
		1759	REQ_SEND;
		1760	}
		1761	}
		1762
		1763	void
		1764	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1765	PPCODE:
		1766	{
		1767	STRLEN svlen;
		1768	char *svptr = SvPVbyte (data, svlen);
		1769	UV len = SvUV (length);
		1770
		1771	if (offset < 0)
		1772	offset += svlen;
		1773
		1774	if (offset < 0 || offset > svlen)
		1775	croak ("offset outside of scalar");
		1776
		1777	if (!SvOK (length) || len + offset > svlen)
		1778	len = svlen - offset;
		1779
		1780	{
		1781	dREQ;
		1782
		1783	req->type = EIO_MLOCK;
		1784	req->sv2 = SvREFCNT_inc (data);
		1785	req->ptr2 = (char *)svptr + offset;
		1786	req->size = len;
		1787
		1788	REQ_SEND;
		1789	}
		1790	}
		1791
		1792	void
		1793	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1794	PPCODE:
		1795	{
		1796	dREQ;
		1797
		1798	req->type = EIO_MLOCKALL;
		1799	req->int1 = flags;
		1800
		1801	REQ_SEND;
		1802	}
		1803
		1804	void
		1805	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1806	PPCODE:
		1807	{
		1808	int fd = s_fileno_croak (fh, 0);
		1809	dREQ;
		1810
		1811	req->type = EIO_CUSTOM;
		1812	req->sv1 = newSVsv (fh);
		1813	req->int1 = fd;
		1814
		1815	req->feed = fiemap;
		1816	#if HAVE_FIEMAP
		1817	/* keep our fingers crossed that the next two types are 64 bit */
		1818	req->offs = start;
		1819	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1820	req->int2 = flags;
		1821	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1822	#endif
		1823
		1824	REQ_SEND;
		1825	}
		1826
		1827	void
		1828	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1829	PPCODE:
		1830	{
		1831	char *svptr = 0;
		1832
		1833	sv_clear_foreign (data);
		1834
		1835	if (length) /* known length, directly read into scalar */
		1836	{
		1837	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1838	svptr = sv_grow (data, length + 1);
		1839	else if (SvCUR (data) < length)
		1840	croak ("length outside of scalar, and cannot grow");
		1841	else
		1842	svptr = SvPVbyte_nolen (data);
		1843	}
		1844
		1845	{
		1846	dREQ;
		1847
		1848	req->type = EIO_SLURP;
		1849	req_set_path1 (req, pathname);
		1850	req->offs = offset;
		1851	req->size = length;
		1852	req->sv2 = SvREFCNT_inc (data);
		1853	req->ptr2 = svptr;
		1854
		1855	if (!SvREADONLY (data))
		1856	{
		1857	SvREADONLY_on (data);
		1858	req->flags |= FLAG_SV2_RO_OFF;
		1859	}
		1860
		1861	REQ_SEND;
		1862	}
		1863	}
		1864
		1865	void
931	aio_busy (double delay, SV *callback=&PL_sv_undef)	1866	aio_busy (double delay, SV *callback = &PL_sv_undef)
932	PPCODE:	1867	PPCODE:
933	{	1868	{
934	dREQ;	1869	dREQ;
935		1870
936	req->type = EIO_BUSY;	1871	req->type = EIO_BUSY;
…		…
938		1873
939	REQ_SEND;	1874	REQ_SEND;
940	}	1875	}
941		1876
942	void	1877	void
943	aio_group (SV *callback=&PL_sv_undef)	1878	aio_group (SV *callback = &PL_sv_undef)
944	PROTOTYPE: ;$
945	PPCODE:	1879	PPCODE:
946	{	1880	{
947	dREQ;	1881	dREQ;
948		1882
949	req->type = EIO_GROUP;	1883	req->type = EIO_GROUP;
950		1884
		1885	PUTBACK;
951	req_submit (req);	1886	req_submit (req);
		1887	SPAGAIN;
		1888
952	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1889	XPUSHs (req_sv (req, aio_grp_stash));
953	}	1890	}
954		1891
955	void	1892	void
956	aio_nop (SV *callback=&PL_sv_undef)	1893	aio_nop (SV *callback = &PL_sv_undef)
957	ALIAS:	1894	ALIAS:
958	aio_nop = EIO_NOP	1895	aio_nop = EIO_NOP
959	aio_sync = EIO_SYNC	1896	aio_sync = EIO_SYNC
960	PPCODE:	1897	PPCODE:
961	{	1898	{
…		…
965		1902
966	REQ_SEND;	1903	REQ_SEND;
967	}	1904	}
968		1905
969	int	1906	int
970	aioreq_pri (int pri = 0)	1907	aioreq_pri (int pri = NO_INIT)
971	PROTOTYPE: ;$
972	CODE:	1908	CODE:
973	RETVAL = next_pri;	1909	RETVAL = next_pri;
974	if (items > 0)	1910	if (items > 0)
975	{	1911	{
976	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1912	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
988	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1924	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
989	next_pri = nice;	1925	next_pri = nice;
990		1926
991	void	1927	void
992	flush ()	1928	flush ()
993	PROTOTYPE:
994	CODE:	1929	CODE:
995	while (eio_nreqs ())	1930	while (eio_nreqs ())
996	{	1931	{
997	poll_wait ();	1932	poll_wait ();
998	poll_cb ();	1933	poll_cb ();
999	}	1934	}
1000		1935
1001	int	1936	int
1002	poll()	1937	poll ()
1003	PROTOTYPE:
1004	CODE:	1938	CODE:
1005	poll_wait ();	1939	poll_wait ();
1006	RETVAL = poll_cb ();	1940	RETVAL = poll_cb ();
1007	OUTPUT:	1941	OUTPUT:
1008	RETVAL	1942	RETVAL
1009		1943
1010	int	1944	int
1011	poll_fileno()	1945	poll_fileno ()
1012	PROTOTYPE:
1013	CODE:	1946	CODE:
1014	RETVAL = respipe [0];	1947	RETVAL = s_epipe_fd (&respipe);
1015	OUTPUT:	1948	OUTPUT:
1016	RETVAL	1949	RETVAL
1017		1950
1018	int	1951	int
1019	poll_cb(...)	1952	poll_cb (...)
1020	PROTOTYPE:	1953	PROTOTYPE:
1021	CODE:	1954	CODE:
1022	RETVAL = poll_cb ();	1955	RETVAL = poll_cb ();
1023	OUTPUT:	1956	OUTPUT:
1024	RETVAL	1957	RETVAL
1025		1958
1026	void	1959	void
1027	poll_wait()	1960	poll_wait ()
1028	PROTOTYPE:
1029	CODE:	1961	CODE:
1030	poll_wait ();	1962	poll_wait ();
1031		1963
1032	int	1964	int
1033	nreqs()	1965	nreqs ()
1034	PROTOTYPE:
1035	CODE:	1966	CODE:
1036	RETVAL = eio_nreqs ();	1967	RETVAL = eio_nreqs ();
1037	OUTPUT:	1968	OUTPUT:
1038	RETVAL	1969	RETVAL
1039		1970
1040	int	1971	int
1041	nready()	1972	nready ()
1042	PROTOTYPE:
1043	CODE:	1973	CODE:
1044	RETVAL = eio_nready ();	1974	RETVAL = eio_nready ();
1045	OUTPUT:	1975	OUTPUT:
1046	RETVAL	1976	RETVAL
1047		1977
1048	int	1978	int
1049	npending()	1979	npending ()
1050	PROTOTYPE:
1051	CODE:	1980	CODE:
1052	RETVAL = eio_npending ();	1981	RETVAL = eio_npending ();
1053	OUTPUT:	1982	OUTPUT:
1054	RETVAL	1983	RETVAL
1055		1984
1056	int	1985	int
1057	nthreads()	1986	nthreads ()
1058	PROTOTYPE:
1059	CODE:	1987	CODE:
1060	RETVAL = eio_nthreads ();	1988	RETVAL = eio_nthreads ();
1061	OUTPUT:	1989	OUTPUT:
1062	RETVAL	1990	RETVAL
1063		1991
		1992	int
		1993	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1994	CODE:
		1995	RETVAL = posix_fadvise (fh, offset, length, advice);
		1996	OUTPUT:
		1997	RETVAL
		1998
		1999	IV
		2000	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2001	CODE:
		2002	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2003	OUTPUT:
		2004	RETVAL
		2005
		2006	void
		2007	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2008	PPCODE:
		2009	sv_clear_foreign (scalar);
		2010	{
		2011	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2012	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2013	if (addr == (void *)-1)
		2014	XSRETURN_NO;
		2015
		2016	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2017
		2018	if (!(prot & PROT_WRITE))
		2019	SvREADONLY_on (scalar);
		2020
		2021	XSRETURN_YES;
		2022	}
		2023
		2024	void
		2025	munmap (SV *scalar)
		2026	CODE:
		2027	sv_clear_foreign (scalar);
		2028
		2029	int
		2030	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2031	ALIAS:
		2032	mprotect = 1
		2033	CODE:
		2034	{
		2035	STRLEN svlen;
		2036	void *addr = SvPVbyte (scalar, svlen);
		2037	STRLEN len = SvUV (length);
		2038
		2039	if (offset < 0)
		2040	offset += svlen;
		2041
		2042	if (offset < 0 || offset > svlen)
		2043	croak ("offset outside of scalar");
		2044
		2045	if (!SvOK (length) || len + offset > svlen)
		2046	len = svlen - offset;
		2047
		2048	addr = (void *)(((intptr_t)addr) + offset);
		2049	eio_page_align (&addr, &len);
		2050
		2051	switch (ix)
		2052	{
		2053	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2054	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2055	}
		2056	}
		2057	OUTPUT:
		2058	RETVAL
		2059
		2060	int
		2061	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2062	CODE:
		2063	{
		2064	STRLEN svlen;
		2065	void *addr = SvPVbyte (scalar, svlen);
		2066	size_t len = SvUV (length);
		2067
		2068	if (offset < 0)
		2069	offset += svlen;
		2070
		2071	if (offset < 0 || offset > svlen)
		2072	croak ("offset outside of scalar");
		2073
		2074	if (!SvOK (length) || len + offset > svlen)
		2075	len = svlen - offset;
		2076
		2077	addr = (void *)(((intptr_t)addr) + offset);
		2078	eio_page_align (&addr, &len);
		2079	#if _POSIX_MEMLOCK_RANGE
		2080	RETVAL = munlock (addr, len);
		2081	#else
		2082	RETVAL = EIO_ENOSYS ();
		2083	#endif
		2084	}
		2085	OUTPUT:
		2086	RETVAL
		2087
		2088	int
		2089	munlockall ()
		2090	CODE:
		2091	#if _POSIX_MEMLOCK
		2092	munlockall ();
		2093	#else
		2094	RETVAL = EIO_ENOSYS ();
		2095	#endif
		2096	OUTPUT:
		2097	RETVAL
		2098
		2099	int
		2100	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2101	CODE:
		2102	{
		2103	#if HAVE_LINUX_SPLICE
		2104	loff_t off_in_, off_out_;
		2105	RETVAL = splice (
		2106	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2107	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2108	length, flags
		2109	);
		2110	#else
		2111	RETVAL = EIO_ENOSYS ();
		2112	#endif
		2113	}
		2114	OUTPUT:
		2115	RETVAL
		2116
		2117	int
		2118	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2119	CODE:
		2120	#if HAVE_LINUX_SPLICE
		2121	RETVAL = tee (rfh, wfh, length, flags);
		2122	#else
		2123	RETVAL = EIO_ENOSYS ();
		2124	#endif
		2125	OUTPUT:
		2126	RETVAL
		2127
		2128	int
		2129	pipesize (aio_rfd rfh, int new_size = -1)
		2130	PROTOTYPE: $;$
		2131	CODE:
		2132	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2133	if (new_size >= 0)
		2134	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2135	else
		2136	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2137	#else
		2138	errno = ENOSYS;
		2139	RETVAL = -1;
		2140	#endif
		2141	OUTPUT:
		2142	RETVAL
		2143
		2144	void
		2145	pipe2 (int flags = 0)
		2146	PROTOTYPE: ;$
		2147	PPCODE:
		2148	{
		2149	int fd[2];
		2150	int res;
		2151
		2152	if (flags)
		2153	#if HAVE_PIPE2
		2154	res = pipe2 (fd, flags);
		2155	#else
		2156	res = (errno = ENOSYS, -1);
		2157	#endif
		2158	else
		2159	res = pipe (fd);
		2160
		2161	if (!res)
		2162	{
		2163	EXTEND (SP, 2);
		2164	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2165	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2166	}
		2167	}
		2168
		2169	void
		2170	eventfd (unsigned int initval = 0, int flags = 0)
		2171	PPCODE:
		2172	{
		2173	int fd;
		2174	#if HAVE_EVENTFD
		2175	fd = eventfd (initval, flags);
		2176	#else
		2177	fd = (errno = ENOSYS, -1);
		2178	#endif
		2179
		2180	XPUSHs (newmortalFH (fd, O_RDWR));
		2181	}
		2182
		2183	UV
		2184	get_fdlimit ()
		2185	CODE:
		2186	#if HAVE_RLIMITS
		2187	struct rlimit rl;
		2188	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2189	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2190	#endif
		2191	XSRETURN_UNDEF;
		2192	OUTPUT:
		2193	RETVAL
		2194
		2195	void
		2196	min_fdlimit (UV limit = 0x7fffffffU)
		2197	CODE:
		2198	{
		2199	#if HAVE_RLIMITS
		2200	struct rlimit rl;
		2201	rlim_t orig_rlim_max;
		2202	UV bit;
		2203
		2204	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2205	goto fail;
		2206
		2207	if (rl.rlim_cur == RLIM_INFINITY)
		2208	XSRETURN_YES;
		2209
		2210	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2211
		2212	if (rl.rlim_cur < limit)
		2213	{
		2214	rl.rlim_cur = limit;
		2215
		2216	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2217	rl.rlim_max = rl.rlim_cur;
		2218	}
		2219
		2220	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2221	XSRETURN_YES;
		2222
		2223	if (errno == EPERM)
		2224	{
		2225	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2226	/* our limit overflows a system-wide limit */
		2227	/* try an adaptive algorithm, but do not lower the hardlimit */
		2228	rl.rlim_max = 0;
		2229	for (bit = 0x40000000U; bit; bit >>= 1)
		2230	{
		2231	rl.rlim_max |= bit;
		2232	rl.rlim_cur = rl.rlim_max;
		2233
		2234	/* nevr decrease the hard limit */
		2235	if (rl.rlim_max < orig_rlim_max)
		2236	break;
		2237
		2238	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2239	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2240	}
		2241
		2242	/* now, raise the soft limit to the max permitted */
		2243	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2244	{
		2245	rl.rlim_cur = rl.rlim_max;
		2246	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2247	errno = EPERM;
		2248	}
		2249	}
		2250	#endif
		2251	fail:
		2252	XSRETURN_UNDEF;
		2253	}
		2254
1064	void _on_next_submit (SV *cb)	2255	void _on_next_submit (SV *cb)
1065	CODE:	2256	CODE:
1066	SvREFCNT_dec (on_next_submit);	2257	SvREFCNT_dec (on_next_submit);
1067	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	2258	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1068		2259
1069	PROTOTYPES: DISABLE	2260	PROTOTYPES: DISABLE
1070		2261
		2262	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2263
		2264	BOOT:
		2265	{
		2266	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2267	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2268	}
		2269
		2270	void
		2271	DESTROY (SV *self)
		2272	CODE:
		2273	{
		2274	aio_wd wd = SvAIO_WD (self);
		2275	#if HAVE_AT
		2276	{
		2277	SV *callback = &PL_sv_undef;
		2278	dREQ; /* clobbers next_pri :/ */
		2279	next_pri = req->pri; /* restore next_pri */
		2280	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2281	req->type = EIO_WD_CLOSE;
		2282	req->wd = wd;
		2283	REQ_SEND;
		2284	}
		2285	#else
		2286	eio_wd_close_sync (wd);
		2287	#endif
		2288	}
		2289
1071	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2290	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1072		2291
1073	void	2292	void
1074	cancel (aio_req_ornot req)	2293	cancel (aio_req_ornot req)
1075	CODE:	2294	CODE:
1076	eio_cancel (req);	2295	eio_cancel (req);
1077		2296
1078	void	2297	void
1079	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2298	cb (aio_req_ornot req, SV *callback = NO_INIT)
1080	PPCODE:	2299	PPCODE:
1081	{	2300	{
1082	if (GIMME_V != G_VOID)	2301	if (GIMME_V != G_VOID)
1083	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);	2302	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1084		2303
…		…
1129	AV *av;	2348	AV *av;
1130		2349
1131	grp->errorno = errno;	2350	grp->errorno = errno;
1132		2351
1133	av = newAV ();	2352	av = newAV ();
		2353	av_extend (av, items - 1);
1134		2354
1135	for (i = 1; i < items; ++i )	2355	for (i = 1; i < items; ++i )
1136	av_push (av, newSVsv (ST (i)));	2356	av_push (av, newSVsv (ST (i)));
1137		2357
1138	SvREFCNT_dec (grp->sv1);	2358	SvREFCNT_dec (grp->sv1);
…		…
1148	limit (aio_req grp, int limit)	2368	limit (aio_req grp, int limit)
1149	CODE:	2369	CODE:
1150	eio_grp_limit (grp, limit);	2370	eio_grp_limit (grp, limit);
1151		2371
1152	void	2372	void
1153	feed (aio_req grp, SV *callback=&PL_sv_undef)	2373	feed (aio_req grp, SV *callback = &PL_sv_undef)
1154	CODE:	2374	CODE:
1155	{	2375	{
1156	SvREFCNT_dec (grp->sv2);	2376	SvREFCNT_dec (grp->sv2);
1157	grp->sv2 = newSVsv (callback);	2377	grp->sv2 = newSVsv (callback);
1158	grp->feed = aio_grp_feed;	2378	grp->feed = aio_grp_feed;

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