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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.158 by root, Sat Jan 2 14:11:32 2010 UTC vs.
Revision 1.216 by root, Wed Jul 25 16:12:28 2012 UTC

…		…
15	#include <sys/stat.h>	15	#include <sys/stat.h>
16	#include <limits.h>	16	#include <limits.h>
17	#include <fcntl.h>	17	#include <fcntl.h>
18	#include <sched.h>	18	#include <sched.h>
19		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
20	/* perl namespace pollution */	33	/* perl namespace pollution */
21	#undef VERSION	34	#undef VERSION
22
23	#ifdef _WIN32
24
25	# define EIO_STRUCT_DIRENT Direntry_t
26	# undef malloc
27	# undef free
28
29	// perl overrides all those nice win32 functions
30	# undef open
31	# undef read
32	# undef write
33	# undef send
34	# undef recv
35	# undef stat
36	# undef fstat
37	# define lstat stat
38	# undef truncate
39	# undef ftruncate
40	# undef open
41	# undef close
42	# undef unlink
43	# undef rmdir
44	# undef rename
45	# undef lseek
46
47	# define chown(a,b,c) (errno = ENOSYS, -1)
48	# define fchown(a,b,c) (errno = ENOSYS, -1)
49	# define fchmod(a,b) (errno = ENOSYS, -1)
50	# define symlink(a,b) (errno = ENOSYS, -1)
51	# define readlink(a,b,c) (errno = ENOSYS, -1)
52	# define mknod(a,b,c) (errno = ENOSYS, -1)
53	# define truncate(a,b) (errno = ENOSYS, -1)
54	# define ftruncate(fd,o) chsize ((fd), (o))
55	# define fsync(fd) _commit (fd)
56	# define opendir(fd) (errno = ENOSYS, 0)
57	# define readdir(fd) (errno = ENOSYS, -1)
58	# define closedir(fd) (errno = ENOSYS, -1)
59	# define mkdir(a,b) mkdir (a)
60
61	#else
62
63	# include <sys/time.h>
64	# include <sys/select.h>
65	# include <unistd.h>
66	# include <utime.h>
67	# include <signal.h>
68	# define EIO_STRUCT_DIRENT struct dirent
69
70	#endif
71		35
72	/* perl stupidly overrides readdir and maybe others */	36	/* perl stupidly overrides readdir and maybe others */
73	/* with thread-unsafe versions, imagine that :( */	37	/* with thread-unsafe versions, imagine that :( */
74	#undef readdir	38	#undef readdir
75	#undef opendir	39	#undef opendir
76	#undef closedir	40	#undef closedir
77		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
78	#define EIO_STRUCT_STAT Stat_t	77	#define EIO_STRUCT_STATI64
79		78
80	/* use NV for 32 bit perls as it allows larger offsets */
81	#if IVSIZE >= 8
82	# define VAL64 IV
83	# define SvVAL64 SvIV
84	# define newSVval64 newSViv
85	#else	79	#else
86	# define VAL64 NV	80
87	# define SvVAL64 SvNV	81	#include <sys/time.h>
88	# define newSVval64 newSVnv	82	#include <sys/select.h>
		83	#include <unistd.h>
		84	#include <utime.h>
		85	#include <signal.h>
		86
		87	#define EIO_STRUCT_STAT Stat_t
		88
89	#endif	89	#endif
90		90
91	/*****************************************************************************/	91	/*****************************************************************************/
92		92
93	#if __GNUC__ >= 3	93	#if __GNUC__ >= 3
…		…
103		103
104	typedef SV SV8; /* byte-sv, used for argument-checking */	104	typedef SV SV8; /* byte-sv, used for argument-checking */
105	typedef int aio_rfd; /* read file desriptor */	105	typedef int aio_rfd; /* read file desriptor */
106	typedef int aio_wfd; /* write file descriptor */	106	typedef int aio_wfd; /* write file descriptor */
107		107
108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;	108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109		109
110	#define EIO_REQ_MEMBERS \	110	#define EIO_REQ_MEMBERS \
111	SV *callback; \	111	SV *callback; \
112	SV *sv1, *sv2; \	112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
113	STRLEN stroffset; \	114	STRLEN stroffset; \
114	SV *self;	115	SV *self;
115		116
116	#define EIO_NO_WRAPPERS 1	117	#define EIO_NO_WRAPPERS 1
117		118
		119	#include "libeio/config.h"
118	#include "libeio/eio.h"	120	#include "libeio/eio.h"
119
120	#ifndef POSIX_FADV_NORMAL
121	# define POSIX_FADV_NORMAL 0
122	# define NO_FADVISE 1
123	#endif
124
125	#ifndef POSIX_FADV_SEQUENTIAL
126	# define POSIX_FADV_SEQUENTIAL 0
127	#endif
128
129	#ifndef POSIX_FADV_RANDOM
130	# define POSIX_FADV_RANDOM 0
131	#endif
132
133	#ifndef POSIX_FADV_NOREUSE
134	# define POSIX_FADV_NOREUSE 0
135	#endif
136
137	#ifndef POSIX_FADV_WILLNEED
138	# define POSIX_FADV_WILLNEED 0
139	#endif
140
141	#ifndef POSIX_FADV_DONTNEED
142	# define POSIX_FADV_DONTNEED 0
143	#endif
144		121
145	static int req_invoke (eio_req *req);	122	static int req_invoke (eio_req *req);
146	#define EIO_FINISH(req) req_invoke (req)	123	#define EIO_FINISH(req) req_invoke (req)
147	static void req_destroy (eio_req *grp);	124	static void req_destroy (eio_req *grp);
148	#define EIO_DESTROY(req) req_destroy (req)	125	#define EIO_DESTROY(req) req_destroy (req)
149		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
		140	# else
		141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		142	# endif
		143	#endif
		144
		145	/* defines all sorts of constants to 0 unless they are already defined */
		146	#include "def0.h"
		147
		148	#ifndef makedev
		149	# define makedev(maj,min) (((maj) << 8) | (min))
		150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
		215	#else
		216	errno = ENOSYS;
		217	#endif
		218	}
		219
		220	/*****************************************************************************/
		221
150	enum {	222	enum {
151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
152	};	224	};
153		225
154	#include "libeio/eio.c"
155
156	typedef eio_req *aio_req;	226	typedef eio_req *aio_req;
157	typedef eio_req *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
158		229
159	static SV *on_next_submit;	230	static SV *on_next_submit;
160	static int next_pri = EIO_PRI_DEFAULT;	231	static int next_pri = EIO_PRI_DEFAULT;
161	static int max_outstanding;	232	static int max_outstanding;
162		233
163	static s_epipe respipe;	234	static s_epipe respipe;
164		235
165	static void req_destroy (aio_req req);	236	static void req_destroy (aio_req req);
166	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
167		238
168	static void want_poll (void)	239	static void
		240	want_poll (void)
169	{	241	{
170	/* write a dummy byte to the pipe so fh becomes ready */	242	/* write a dummy byte to the pipe so fh becomes ready */
171	s_epipe_signal (&respipe);	243	s_epipe_signal (&respipe);
172	}	244	}
173		245
174	static void done_poll (void)	246	static void
		247	done_poll (void)
175	{	248	{
176	/* read any signals sent by the worker threads */	249	/* read any signals sent by the worker threads */
177	s_epipe_drain (&respipe);	250	s_epipe_drain (&respipe);
178	}	251	}
179		252
180	/* must be called at most once */	253	/* must be called at most once */
		254	static SV *
181	static SV *req_sv (aio_req req, HV *stash)	255	req_sv (aio_req req, HV *stash)
182	{	256	{
183	if (!req->self)	257	if (!req->self)
184	{	258	{
185	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
187	}	261	}
188		262
189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
190	}	264	}
191		265
192	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
193	{	274	{
194	MAGIC *mg;	275	MAGIC *mg;
195		276
196	if (!SvROK (sv)	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash	279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
198	&& SvSTASH (SvRV (sv)) != aio_req_stash	280	&& SvSTASH (SvRV (sv)) != aio_req_stash
199	&& !sv_derived_from (sv, "IO::AIO::REQ")))	281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
200	croak ("object of class IO::AIO::REQ expected");	282	croak ("object of class IO::AIO::REQ expected");
201		283
202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
203		285
204	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
205	}	287	}
206		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
207	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
208	{	302	{
209	if (grp->sv2 && SvOK (grp->sv2))	303	if (grp->sv2 && SvOK (grp->sv2))
210	{	304	{
211	dSP;	305	dSP;
212		306
…		…
220	FREETMPS;	314	FREETMPS;
221	LEAVE;	315	LEAVE;
222	}	316	}
223	}	317	}
224		318
		319	static void
225	static void req_submit (eio_req *req)	320	req_submit (eio_req *req)
226	{	321	{
227	eio_submit (req);	322	eio_submit (req);
228		323
229	if (expect_false (on_next_submit))	324	if (expect_false (on_next_submit))
230	{	325	{
…		…
237	PUTBACK;	332	PUTBACK;
238	call_sv (cb, G_DISCARD | G_EVAL);	333	call_sv (cb, G_DISCARD | G_EVAL);
239	}	334	}
240	}	335	}
241		336
		337	static int
242	static int req_invoke (eio_req *req)	338	req_invoke (eio_req *req)
243	{	339	{
244	dSP;
245
246	if (req->flags & FLAG_SV2_RO_OFF)	340	if (req->flags & FLAG_SV2_RO_OFF)
247	SvREADONLY_off (req->sv2);	341	SvREADONLY_off (req->sv2);
248		342
249	if (!EIO_CANCELLED (req) && req->callback)	343	if (!EIO_CANCELLED (req) && req->callback)
250	{	344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
251	ENTER;	349	ENTER;
252	SAVETMPS;	350	SAVETMPS;
253	PUSHMARK (SP);	351	PUSHMARK (SP);
254	EXTEND (SP, 1);	352	EXTEND (SP, 1);
255		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	SvIOK_only (sv_result);
		360	}
		361	else
		362	{
		363	sv_result = newSViv (req->result);
		364	SvREADONLY_on (sv_result);
		365	}
		366
256	switch (req->type)	367	switch (req->type)
257	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
258	case EIO_READDIR:	373	case EIO_READDIR:
259	{	374	{
260	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
261		376
262	if (req->result >= 0)	377	if (req->result >= 0)
…		…
345		460
346	PUSHs (fh);	461	PUSHs (fh);
347	}	462	}
348	break;	463	break;
349		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
350	case EIO_GROUP:	497	case EIO_GROUP:
351	req->int1 = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
352		499
353	if (req->sv1)	500	if (req->sv1)
354	{	501	{
…		…
364	case EIO_NOP:	511	case EIO_NOP:
365	case EIO_BUSY:	512	case EIO_BUSY:
366	break;	513	break;
367		514
368	case EIO_READLINK:	515	case EIO_READLINK:
		516	case EIO_REALPATH:
369	if (req->result > 0)	517	if (req->result > 0)
370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
371	break;	519	break;
372		520
373	case EIO_STAT:	521	case EIO_STAT:
374	case EIO_LSTAT:	522	case EIO_LSTAT:
375	case EIO_FSTAT:	523	case EIO_FSTAT:
376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
377	PL_laststatval = req->result;	526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
379	PUSHs (sv_2mortal (newSViv (req->result)));	529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
380	break;	535	break;
381		536
382	case EIO_READ:	537	case EIO_READ:
383	{	538	{
384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
385	*SvEND (req->sv2) = 0;	540	*SvEND (req->sv2) = 0;
386	SvPOK_only (req->sv2);	541	SvPOK_only (req->sv2);
387	SvSETMAGIC (req->sv2);	542	SvSETMAGIC (req->sv2);
388	PUSHs (sv_2mortal (newSViv (req->result)));	543	PUSHs (sv_result);
389	}	544	}
390	break;	545	break;
391		546
392	case EIO_DUP2:	547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
393	if (req->result > 0)	588	if (req->result > 0)
394	req->result = 0;	589	SvIV_set (sv_result, 0);
395	/* FALLTHROUGH */	590	/* FALLTHROUGH */
396		591
397	default:	592	default:
398	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
399	break;	594	break;
400	}	595	}
401		596
402	errno = req->errorno;	597	errno = req->errorno;
403		598
404	PUTBACK;	599	PUTBACK;
405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
406	SPAGAIN;	601	SPAGAIN;
407		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
		607
408	FREETMPS;	608	FREETMPS;
409	LEAVE;	609	LEAVE;
410		610
411	PUTBACK;	611	PUTBACK;
412	}	612	}
413		613
414	return !!SvTRUE (ERRSV);	614	return !!SvTRUE (ERRSV);
415	}	615	}
416		616
		617	static void
417	static void req_destroy (aio_req req)	618	req_destroy (aio_req req)
418	{	619	{
419	if (req->self)	620	if (req->self)
420	{	621	{
421	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
422	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
423	}	624	}
424		625
425	SvREFCNT_dec (req->sv1);	626	SvREFCNT_dec (req->sv1);
426	SvREFCNT_dec (req->sv2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
427	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
428		631
429	Safefree (req);	632	free (req);
430	}	633	}
431		634
		635	static void
432	static void req_cancel_subs (aio_req grp)	636	req_cancel_subs (aio_req grp)
433	{	637	{
434	aio_req sub;
435
436	if (grp->type != EIO_GROUP)	638	if (grp->type != EIO_GROUP)
437	return;	639	return;
438		640
439	SvREFCNT_dec (grp->sv2);	641	SvREFCNT_dec (grp->sv2);
440	grp->sv2 = 0;	642	grp->sv2 = 0;
441		643
442	eio_grp_cancel (grp);	644	eio_grp_cancel (grp);
443	}	645	}
444		646
445	static void	647	static void ecb_cold
446	create_respipe (void)	648	create_respipe (void)
447	{	649	{
448	if (s_epipe_renew (&respipe))	650	if (s_epipe_renew (&respipe))
449	croak ("IO::AIO: unable to initialize result pipe");	651	croak ("IO::AIO: unable to initialize result pipe");
450	}	652	}
451		653
452	static void poll_wait (void)	654	static void
		655	poll_wait (void)
453	{	656	{
454	while (eio_nreqs ())	657	while (eio_nreqs ())
455	{	658	{
456	int size;	659	int size;
457		660
…		…
466		669
467	s_epipe_wait (&respipe);	670	s_epipe_wait (&respipe);
468	}	671	}
469	}	672	}
470		673
471	static int poll_cb (void)	674	static int
		675	poll_cb (void)
472	{	676	{
473	for (;;)	677	for (;;)
474	{	678	{
475	int res = eio_poll ();	679	int res = eio_poll ();
476		680
…		…
482		686
483	poll_wait ();	687	poll_wait ();
484	}	688	}
485	}	689	}
486		690
487	static void atfork_child (void)	691	static void ecb_cold
		692	reinit (void)
488	{	693	{
489	create_respipe ();	694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
490	}	698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		704	# define munmap(addr,length) EIO_ENOSYS ()
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
491		744
492	static SV *	745	static SV *
493	get_cb (SV *cb_sv)	746	get_cb (SV *cb_sv)
494	{	747	{
495	SvGETMAGIC (cb_sv);	748	SvGETMAGIC (cb_sv);
496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;	749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
497	}	750	}
498		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
499	#define dREQ \	772	#define dREQ \
500	SV *cb_cv; \	773	aio_req req = dreq (callback); \
501	aio_req req; \
502	int req_pri = next_pri; \
503	next_pri = EIO_PRI_DEFAULT; \
504	\
505	cb_cv = get_cb (callback); \
506	\
507	Newz (0, req, 1, eio_req); \
508	if (!req) \
509	croak ("out of memory during eio_req allocation"); \
510	\
511	req->callback = SvREFCNT_inc (cb_cv); \
512	req->pri = req_pri
513		774
514	#define REQ_SEND \	775	#define REQ_SEND \
515	PUTBACK; \	776	PUTBACK; \
516	req_submit (req); \	777	req_submit (req); \
517	SPAGAIN; \	778	SPAGAIN; \
518	\	779	\
519	if (GIMME_V != G_VOID) \	780	if (GIMME_V != G_VOID) \
520	XPUSHs (req_sv (req, aio_req_stash));	781	XPUSHs (req_sv (req, aio_req_stash));
521		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		792	{
		793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
		795
		796	if (SvOK (wdob))
		797	{
		798	*wd = SvAIO_WD (wdob);
		799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		800	}
		801	else
		802	*wd = EIO_INVALID_WD;
		803	}
		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		805	{
		806	*wd = (aio_wd)(long)SvIVX (rv);
		807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
		810	}
		811	else
		812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		813	}
		814
		815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
		817	}
		818
		819	static void ecb_noinline
		820	req_set_path1 (aio_req req, SV *path)
		821	{
		822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		823	}
		824
		825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		827	{
		828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		829
		830	switch (SvTYPE (rv))
		831	{
		832	case SVt_PVIO:
		833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
		844	}
		845	}
		846
		847	XS(boot_IO__AIO) ecb_cold;
		848
522	MODULE = IO::AIO PACKAGE = IO::AIO	849	MODULE = IO::AIO PACKAGE = IO::AIO
523		850
524	PROTOTYPES: ENABLE	851	PROTOTYPES: ENABLE
525		852
526	BOOT:	853	BOOT:
527	{	854	{
528	static const struct {	855	static const struct {
529	const char *name;	856	const char *name;
530	IV iv;	857	IV iv;
531	} *civ, const_iv[] = {	858	} *civ, const_iv[] = {
532	# define const_iv(name, value) { # name, (IV) value },	859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
533	# define const_eio(name) { # name, (IV) EIO_ ## name },	861	# define const_eio(name) { # name, (IV) EIO_ ## name },
534	const_iv (EXDEV , EXDEV)	862
		863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		864
535	const_iv (ENOSYS , ENOSYS)	865	const_iv (ENOSYS)
		866	const_iv (EXDEV)
		867	const_iv (EBADR)
		868
536	const_iv (O_RDONLY, O_RDONLY)	869	const_iv (O_RDONLY)
537	const_iv (O_WRONLY, O_WRONLY)	870	const_iv (O_WRONLY)
		871	const_iv (O_RDWR)
538	const_iv (O_CREAT , O_CREAT)	872	const_iv (O_CREAT)
539	const_iv (O_TRUNC , O_TRUNC)	873	const_iv (O_TRUNC)
540	#ifndef _WIN32	874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
		876
		877	const_iv (O_ASYNC)
		878	const_iv (O_DIRECT)
		879	const_iv (O_NOATIME)
		880
		881	const_iv (O_CLOEXEC)
		882	const_iv (O_NOCTTY)
		883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
		892
541	const_iv (S_IFIFO , S_IFIFO)	893	const_iv (S_IFIFO)
542	#endif	894	const_iv (S_IFCHR)
		895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
		902
543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)	905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)	906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)	907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)	908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		909
		910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		915
		916	const_iv (ST_RDONLY)
		917	const_iv (ST_NOSUID)
		918	const_iv (ST_NODEV)
		919	const_iv (ST_NOEXEC)
		920	const_iv (ST_SYNCHRONOUS)
		921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
		928
		929	const_iv (PROT_NONE)
		930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
		933
		934	/*const_iv (MAP_FIXED)*/
		935	const_iv (MAP_PRIVATE)
		936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
		938
		939	/* linuxish */
		940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
		945
		946	const_iv (FIEMAP_FLAG_SYNC)
		947	const_iv (FIEMAP_FLAG_XATTR)
		948	const_iv (FIEMAP_FLAGS_COMPAT)
		949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
		960
		961	const_iv (SPLICE_F_MOVE)
		962	const_iv (SPLICE_F_NONBLOCK)
		963	const_iv (SPLICE_F_MORE)
		964	const_iv (SPLICE_F_GIFT)
		965
		966	const_iv (SEEK_DATA)
		967	const_iv (SEEK_HOLE)
		968
		969	/* libeio constants */
		970	const_eio (SEEK_SET)
		971	const_eio (SEEK_CUR)
		972	const_eio (SEEK_END)
		973
		974	const_eio (MCL_FUTURE)
		975	const_eio (MCL_CURRENT)
549		976
550	const_eio (MS_ASYNC)	977	const_eio (MS_ASYNC)
551	const_eio (MS_INVALIDATE)	978	const_eio (MS_INVALIDATE)
552	const_eio (MS_SYNC)	979	const_eio (MS_SYNC)
553		980
554	const_eio (MT_MODIFY)	981	const_eio (MT_MODIFY)
555		982
556	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
557	const_eio (SYNC_FILE_RANGE_WRITE)	984	const_eio (SYNC_FILE_RANGE_WRITE)
558	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		986
		987	const_eio (FALLOC_FL_KEEP_SIZE)
		988	const_eio (FALLOC_FL_PUNCH_HOLE)
559		989
560	const_eio (READDIR_DENTS)	990	const_eio (READDIR_DENTS)
561	const_eio (READDIR_DIRS_FIRST)	991	const_eio (READDIR_DIRS_FIRST)
562	const_eio (READDIR_STAT_ORDER)	992	const_eio (READDIR_STAT_ORDER)
563	const_eio (READDIR_FOUND_UNKNOWN)	993	const_eio (READDIR_FOUND_UNKNOWN)
…		…
574	};	1004	};
575		1005
576	aio_stash = gv_stashpv ("IO::AIO" , 1);	1006	aio_stash = gv_stashpv ("IO::AIO" , 1);
577	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);	1007	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
578	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);	1008	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1009	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
579		1010
580	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )	1011	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
581	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));	1012	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
582		1013
583	create_respipe ();	1014	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
584		1015
585	if (eio_init (want_poll, done_poll) < 0)	1016	reinit ();
586	croak ("IO::AIO: unable to initialise eio library");
587
588	/* atfork child called in fifo order, so before eio's handler */
589	X_THREAD_ATFORK (0, 0, atfork_child);
590	}	1017	}
591		1018
592	void	1019	void
		1020	reinit ()
		1021	PROTOTYPE:
		1022
		1023	void
593	max_poll_reqs (int nreqs)	1024	max_poll_reqs (unsigned int nreqs)
594	PROTOTYPE: $	1025	PROTOTYPE: $
595	CODE:	1026	CODE:
596	eio_set_max_poll_reqs (nreqs);	1027	eio_set_max_poll_reqs (nreqs);
597		1028
598	void	1029	void
…		…
600	PROTOTYPE: $	1031	PROTOTYPE: $
601	CODE:	1032	CODE:
602	eio_set_max_poll_time (nseconds);	1033	eio_set_max_poll_time (nseconds);
603		1034
604	void	1035	void
605	min_parallel (int nthreads)	1036	min_parallel (unsigned int nthreads)
606	PROTOTYPE: $	1037	PROTOTYPE: $
607	CODE:	1038	CODE:
608	eio_set_min_parallel (nthreads);	1039	eio_set_min_parallel (nthreads);
609		1040
610	void	1041	void
611	max_parallel (int nthreads)	1042	max_parallel (unsigned int nthreads)
612	PROTOTYPE: $	1043	PROTOTYPE: $
613	CODE:	1044	CODE:
614	eio_set_max_parallel (nthreads);	1045	eio_set_max_parallel (nthreads);
615		1046
616	void	1047	void
617	max_idle (int nthreads)	1048	max_idle (unsigned int nthreads)
618	PROTOTYPE: $	1049	PROTOTYPE: $
619	CODE:	1050	CODE:
620	eio_set_max_idle (nthreads);	1051	eio_set_max_idle (nthreads);
621		1052
622	void	1053	void
		1054	idle_timeout (unsigned int seconds)
		1055	PROTOTYPE: $
		1056	CODE:
		1057	eio_set_idle_timeout (seconds);
		1058
		1059	void
623	max_outstanding (int maxreqs)	1060	max_outstanding (unsigned int maxreqs)
624	PROTOTYPE: $	1061	PROTOTYPE: $
625	CODE:	1062	CODE:
626	max_outstanding = maxreqs;	1063	max_outstanding = maxreqs;
627		1064
628	void	1065	void
		1066	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->type = EIO_WD_OPEN;
		1072	req_set_path1 (req, pathname);
		1073
		1074	REQ_SEND;
		1075	}
		1076
		1077	void
629	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1078	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
630	PROTOTYPE: $$$;$
631	PPCODE:	1079	PPCODE:
632	{	1080	{
633	dREQ;	1081	dREQ;
634		1082
635	req->type = EIO_OPEN;	1083	req->type = EIO_OPEN;
636	req->sv1 = newSVsv (pathname);	1084	req_set_path1 (req, pathname);
637	req->ptr1 = SvPVbyte_nolen (req->sv1);
638	req->int1 = flags;	1085	req->int1 = flags;
639	req->int2 = mode;	1086	req->int2 = mode;
640		1087
641	REQ_SEND;	1088	REQ_SEND;
642	}	1089	}
643		1090
644	void	1091	void
645	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1092	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
646	PROTOTYPE: $;$
647	ALIAS:	1093	ALIAS:
648	aio_fsync = EIO_FSYNC	1094	aio_fsync = EIO_FSYNC
649	aio_fdatasync = EIO_FDATASYNC	1095	aio_fdatasync = EIO_FDATASYNC
		1096	aio_syncfs = EIO_SYNCFS
650	PPCODE:	1097	PPCODE:
651	{	1098	{
652	int fd = s_fileno_croak (fh, 0);	1099	int fd = s_fileno_croak (fh, 0);
653	dREQ;	1100	dREQ;
654		1101
655	req->type = ix;	1102	req->type = ix;
656	req->sv1 = newSVsv (fh);	1103	req->sv1 = newSVsv (fh);
657	req->int1 = fd;	1104	req->int1 = fd;
658		1105
659	REQ_SEND (req);	1106	REQ_SEND;
660	}	1107	}
661		1108
662	void	1109	void
663	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)	1110	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
664	PROTOTYPE: $$$$;$
665	PPCODE:	1111	PPCODE:
666	{	1112	{
667	int fd = s_fileno_croak (fh, 0);	1113	int fd = s_fileno_croak (fh, 0);
668	dREQ;	1114	dREQ;
669		1115
…		…
672	req->int1 = fd;	1118	req->int1 = fd;
673	req->offs = offset;	1119	req->offs = offset;
674	req->size = nbytes;	1120	req->size = nbytes;
675	req->int2 = flags;	1121	req->int2 = flags;
676		1122
677	REQ_SEND (req);	1123	REQ_SEND;
678	}	1124	}
679		1125
680	void	1126	void
681	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1127	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
682	PROTOTYPE: $;$
683	PPCODE:	1128	PPCODE:
684	{	1129	{
685	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
686	int fd = s_fileno_croak (fh, 0);	1130	int fd = s_fileno_croak (fh, 0);
687	dREQ;	1131	dREQ;
688		1132
689	if (close_pipe < 0)	1133	req->type = EIO_FALLOCATE;
		1134	req->sv1 = newSVsv (fh);
		1135	req->int1 = fd;
		1136	req->int2 = mode;
		1137	req->offs = offset;
		1138	req->size = len;
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1145	PPCODE:
		1146	{
		1147	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1148	int fd = s_fileno_croak (fh, 0);
		1149	dREQ;
		1150
		1151	if (expect_false (close_fd < 0))
690	{	1152	{
691	int pipefd [2];	1153	int pipefd [2];
692		1154
		1155	if (
		1156	#ifdef _WIN32
		1157	_pipe (pipefd, 1, _O_BINARY) < 0
		1158	#else
693	if (pipe (pipefd) < 0	1159	pipe (pipefd) < 0
694	|| close (pipefd [1]) < 0
695	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1160	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1161	#endif
		1162	|| close (pipefd [1]) < 0
		1163	)
696	abort (); /*D*/	1164	abort (); /*D*/
697		1165
698	close_pipe = pipefd [0];	1166	close_fd = pipefd [0];
699	}	1167	}
700		1168
701	req->type = EIO_DUP2;	1169	req->type = EIO_DUP2;
702	req->int1 = close_pipe;	1170	req->int1 = close_fd;
703	req->sv2 = newSVsv (fh);	1171	req->sv2 = newSVsv (fh);
704	req->int2 = fd;	1172	req->int2 = fd;
705		1173
706	REQ_SEND (req);	1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_SEEK;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->offs = SvVAL64 (offset);
		1188	req->int2 = whence;
		1189
		1190	REQ_SEND;
707	}	1191	}
708		1192
709	void	1193	void
710	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1194	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
711	ALIAS:	1195	ALIAS:
712	aio_read = EIO_READ	1196	aio_read = EIO_READ
713	aio_write = EIO_WRITE	1197	aio_write = EIO_WRITE
714	PROTOTYPE: $$$$$;$
715	PPCODE:	1198	PPCODE:
716	{	1199	{
717	STRLEN svlen;	1200	STRLEN svlen;
718	int fd = s_fileno_croak (fh, ix == EIO_WRITE);	1201	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
719	char *svptr = SvPVbyte (data, svlen);	1202	char *svptr = SvPVbyte (data, svlen);
…		…
733	}	1216	}
734	else	1217	else
735	{	1218	{
736	/* read: check type and grow scalar as necessary */	1219	/* read: check type and grow scalar as necessary */
737	SvUPGRADE (data, SVt_PV);	1220	SvUPGRADE (data, SVt_PV);
		1221	if (SvLEN (data) >= SvCUR (data))
738	svptr = SvGROW (data, len + dataoffset + 1);	1222	svptr = SvGROW (data, len + dataoffset + 1);
		1223	else if (SvCUR (data) < len + dataoffset)
		1224	croak ("length + dataoffset outside of scalar, and cannot grow");
739	}	1225	}
740		1226
741	{	1227	{
742	dREQ;	1228	dREQ;
743		1229
…		…
759	REQ_SEND;	1245	REQ_SEND;
760	}	1246	}
761	}	1247	}
762		1248
763	void	1249	void
764	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1250	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
765	PROTOTYPE: $$;$	1251	ALIAS:
		1252	aio_readlink = EIO_READLINK
		1253	aio_realpath = EIO_REALPATH
766	PPCODE:	1254	PPCODE:
767	{	1255	{
768	SV *data;
769	dREQ;	1256	dREQ;
770		1257
771	req->type = EIO_READLINK;	1258	req->type = ix;
772	req->sv1 = newSVsv (path);	1259	req_set_path1 (req, pathname);
773	req->ptr1 = SvPVbyte_nolen (req->sv1);
774		1260
775	REQ_SEND;	1261	REQ_SEND;
776	}	1262	}
777		1263
778	void	1264	void
779	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)	1265	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
780	PROTOTYPE: $$$$;$
781	PPCODE:	1266	PPCODE:
782	{	1267	{
783	int ifd = s_fileno_croak (in_fh , 0);	1268	int ifd = s_fileno_croak (in_fh , 0);
784	int ofd = s_fileno_croak (out_fh, 1);	1269	int ofd = s_fileno_croak (out_fh, 1);
785	dREQ;	1270	dREQ;
…		…
795	REQ_SEND;	1280	REQ_SEND;
796	}	1281	}
797		1282
798	void	1283	void
799	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)	1284	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
800	PROTOTYPE: $$$;$
801	PPCODE:	1285	PPCODE:
802	{	1286	{
803	int fd = s_fileno_croak (fh, 0);	1287	int fd = s_fileno_croak (fh, 0);
804	dREQ;	1288	dREQ;
805		1289
…		…
813	}	1297	}
814		1298
815	void	1299	void
816	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1300	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
817	ALIAS:	1301	ALIAS:
818	aio_stat = EIO_STAT	1302	aio_stat = EIO_STAT
819	aio_lstat = EIO_LSTAT	1303	aio_lstat = EIO_LSTAT
		1304	aio_statvfs = EIO_STATVFS
820	PPCODE:	1305	PPCODE:
821	{	1306	{
822	dREQ;	1307	dREQ;
823		1308
824	req->sv1 = newSVsv (fh_or_path);	1309	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
825
826	if (SvPOK (req->sv1))
827	{
828	req->type = ix;
829	req->ptr1 = SvPVbyte_nolen (req->sv1);
830	}
831	else
832	{
833	req->type = EIO_FSTAT;
834	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
835	}
836		1310
837	REQ_SEND;	1311	REQ_SEND;
838	}	1312	}
		1313
		1314	UV
		1315	major (UV dev)
		1316	ALIAS:
		1317	minor = 1
		1318	CODE:
		1319	RETVAL = ix ? major (dev) : minor (dev);
		1320	OUTPUT:
		1321	RETVAL
		1322
		1323	UV
		1324	makedev (UV maj, UV min)
		1325	CODE:
		1326	RETVAL = makedev (maj, min);
		1327	OUTPUT:
		1328	RETVAL
839		1329
840	void	1330	void
841	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1331	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
842	PPCODE:	1332	PPCODE:
843	{	1333	{
844	dREQ;	1334	dREQ;
845		1335
846	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1336	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
847	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1337	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
848	req->sv1 = newSVsv (fh_or_path);	1338	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
849
850	if (SvPOK (req->sv1))
851	{
852	req->type = EIO_UTIME;
853	req->ptr1 = SvPVbyte_nolen (req->sv1);
854	}
855	else
856	{
857	req->type = EIO_FUTIME;
858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
859	}
860		1339
861	REQ_SEND;	1340	REQ_SEND;
862	}	1341	}
863		1342
864	void	1343	void
865	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1344	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
866	PPCODE:	1345	PPCODE:
867	{	1346	{
868	dREQ;	1347	dREQ;
869		1348
870	req->sv1 = newSVsv (fh_or_path);
871	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1349	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
872		1350	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
873	if (SvPOK (req->sv1))
874	{
875	req->type = EIO_TRUNCATE;
876	req->ptr1 = SvPVbyte_nolen (req->sv1);
877	}
878	else
879	{
880	req->type = EIO_FTRUNCATE;
881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
882	}
883		1351
884	REQ_SEND;	1352	REQ_SEND;
885	}	1353	}
886		1354
887	void	1355	void
888	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1356	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
889	ALIAS:
890	aio_chmod = EIO_CHMOD
891	aio_mkdir = EIO_MKDIR
892	PPCODE:	1357	PPCODE:
893	{	1358	{
894	dREQ;	1359	dREQ;
895		1360
896	req->int2 = mode;	1361	req->int2 = mode;
897	req->sv1 = newSVsv (fh_or_path);	1362	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
898
899	if (SvPOK (req->sv1))
900	{
901	req->type = ix;
902	req->ptr1 = SvPVbyte_nolen (req->sv1);
903	}
904	else
905	{
906	req->type = EIO_FCHMOD;
907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
908	}
909		1363
910	REQ_SEND;	1364	REQ_SEND;
911	}	1365	}
912		1366
913	void	1367	void
…		…
916	{	1370	{
917	dREQ;	1371	dREQ;
918		1372
919	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1373	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
920	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1374	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
921	req->sv1 = newSVsv (fh_or_path);	1375	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
922
923	if (SvPOK (req->sv1))
924	{
925	req->type = EIO_CHOWN;
926	req->ptr1 = SvPVbyte_nolen (req->sv1);
927	}
928	else
929	{
930	req->type = EIO_FCHOWN;
931	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
932	}
933		1376
934	REQ_SEND;	1377	REQ_SEND;
935	}	1378	}
936		1379
937	void	1380	void
…		…
939	PPCODE:	1382	PPCODE:
940	{	1383	{
941	dREQ;	1384	dREQ;
942		1385
943	req->type = EIO_READDIR;	1386	req->type = EIO_READDIR;
944	req->sv1 = newSVsv (pathname);
945	req->ptr1 = SvPVbyte_nolen (req->sv1);
946	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;	1387	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
947		1388
948	if (flags & EIO_READDIR_DENTS)	1389	if (flags & EIO_READDIR_DENTS)
949	req->int1 |= EIO_READDIR_CUSTOM2;	1390	req->int1 |= EIO_READDIR_CUSTOM2;
950		1391
		1392	req_set_path1 (req, pathname);
		1393
951	REQ_SEND;	1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1399	PPCODE:
		1400	{
		1401	dREQ;
		1402
		1403	req->type = EIO_MKDIR;
		1404	req->int2 = mode;
		1405	req_set_path1 (req, pathname);
		1406
		1407	REQ_SEND;
952	}	1408	}
953		1409
954	void	1410	void
955	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1411	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
956	ALIAS:	1412	ALIAS:
…		…
960	PPCODE:	1416	PPCODE:
961	{	1417	{
962	dREQ;	1418	dREQ;
963		1419
964	req->type = ix;	1420	req->type = ix;
965	req->sv1 = newSVsv (pathname);	1421	req_set_path1 (req, pathname);
966	req->ptr1 = SvPVbyte_nolen (req->sv1);
967		1422
968	REQ_SEND;	1423	REQ_SEND;
969	}	1424	}
970		1425
971	void	1426	void
…		…
974	aio_link = EIO_LINK	1429	aio_link = EIO_LINK
975	aio_symlink = EIO_SYMLINK	1430	aio_symlink = EIO_SYMLINK
976	aio_rename = EIO_RENAME	1431	aio_rename = EIO_RENAME
977	PPCODE:	1432	PPCODE:
978	{	1433	{
		1434	eio_wd wd2 = 0;
979	dREQ;	1435	dREQ;
980		1436
981	req->type = ix;	1437	req->type = ix;
982	req->sv1 = newSVsv (oldpath);	1438	req_set_path1 (req, oldpath);
983	req->ptr1 = SvPVbyte_nolen (req->sv1);	1439	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
984	req->sv2 = newSVsv (newpath);	1440	req->int3 = (long)wd2;
985	req->ptr2 = SvPVbyte_nolen (req->sv2);
986		1441
987	REQ_SEND;	1442	REQ_SEND;
988	}	1443	}
989		1444
990	void	1445	void
…		…
992	PPCODE:	1447	PPCODE:
993	{	1448	{
994	dREQ;	1449	dREQ;
995		1450
996	req->type = EIO_MKNOD;	1451	req->type = EIO_MKNOD;
997	req->sv1 = newSVsv (pathname);
998	req->ptr1 = SvPVbyte_nolen (req->sv1);
999	req->int2 = (mode_t)mode;	1452	req->int2 = (mode_t)mode;
1000	req->offs = dev;	1453	req->offs = dev;
		1454	req_set_path1 (req, pathname);
1001		1455
1002	REQ_SEND;	1456	REQ_SEND;
1003	}	1457	}
1004		1458
1005	void	1459	void
1006	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)	1460	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1007	ALIAS:	1461	ALIAS:
1008	aio_mtouch = EIO_MTOUCH	1462	aio_mtouch = EIO_MTOUCH
1009	aio_msync = EIO_MSYNC	1463	aio_msync = EIO_MSYNC
1010	PROTOTYPE: $$$$;$
1011	PPCODE:	1464	PPCODE:
1012	{	1465	{
1013	STRLEN svlen;	1466	STRLEN svlen;
		1467	char *svptr = SvPVbyte (data, svlen);
1014	UV len = SvUV (length);	1468	UV len = SvUV (length);
1015	char *svptr = SvPVbyte (data, svlen);
1016		1469
1017	if (offset < 0)	1470	if (offset < 0)
1018	offset += svlen;	1471	offset += svlen;
1019		1472
1020	if (offset < 0 || offset > svlen)	1473	if (offset < 0 || offset > svlen)
…		…
1025		1478
1026	{	1479	{
1027	dREQ;	1480	dREQ;
1028		1481
1029	req->type = ix;	1482	req->type = ix;
1030	req->size = len;
1031	req->sv2 = SvREFCNT_inc (data);	1483	req->sv2 = SvREFCNT_inc (data);
1032	req->ptr2 = (char *)svptr + offset;	1484	req->ptr2 = (char *)svptr + offset;
		1485	req->size = len;
1033	req->int1 = flags;	1486	req->int1 = flags;
1034		1487
1035	REQ_SEND;	1488	REQ_SEND;
1036	}	1489	}
1037	}	1490	}
1038		1491
1039	void	1492	void
		1493	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1494	PPCODE:
		1495	{
		1496	STRLEN svlen;
		1497	char *svptr = SvPVbyte (data, svlen);
		1498	UV len = SvUV (length);
		1499
		1500	if (offset < 0)
		1501	offset += svlen;
		1502
		1503	if (offset < 0 || offset > svlen)
		1504	croak ("offset outside of scalar");
		1505
		1506	if (!SvOK (length) || len + offset > svlen)
		1507	len = svlen - offset;
		1508
		1509	{
		1510	dREQ;
		1511
		1512	req->type = EIO_MLOCK;
		1513	req->sv2 = SvREFCNT_inc (data);
		1514	req->ptr2 = (char *)svptr + offset;
		1515	req->size = len;
		1516
		1517	REQ_SEND;
		1518	}
		1519	}
		1520
		1521	void
		1522	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1523	PPCODE:
		1524	{
		1525	dREQ;
		1526
		1527	req->type = EIO_MLOCKALL;
		1528	req->int1 = flags;
		1529
		1530	REQ_SEND;
		1531	}
		1532
		1533	void
		1534	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1535	PPCODE:
		1536	{
		1537	int fd = s_fileno_croak (fh, 0);
		1538	dREQ;
		1539
		1540	req->type = EIO_CUSTOM;
		1541	req->sv1 = newSVsv (fh);
		1542	req->int1 = fd;
		1543
		1544	req->feed = fiemap;
		1545	#if HAVE_FIEMAP
		1546	/* keep our fingers crossed that the next two types are 64 bit */
		1547	req->offs = start;
		1548	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1549	req->int2 = flags;
		1550	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1551	#endif
		1552
		1553	REQ_SEND;
		1554	}
		1555
		1556	void
1040	aio_busy (double delay, SV *callback=&PL_sv_undef)	1557	aio_busy (double delay, SV *callback=&PL_sv_undef)
1041	PPCODE:	1558	PPCODE:
1042	{	1559	{
1043	dREQ;	1560	dREQ;
1044		1561
…		…
1048	REQ_SEND;	1565	REQ_SEND;
1049	}	1566	}
1050		1567
1051	void	1568	void
1052	aio_group (SV *callback=&PL_sv_undef)	1569	aio_group (SV *callback=&PL_sv_undef)
1053	PROTOTYPE: ;$
1054	PPCODE:	1570	PPCODE:
1055	{	1571	{
1056	dREQ;	1572	dREQ;
1057		1573
1058	req->type = EIO_GROUP;	1574	req->type = EIO_GROUP;
…		…
1075	REQ_SEND;	1591	REQ_SEND;
1076	}	1592	}
1077		1593
1078	int	1594	int
1079	aioreq_pri (int pri = 0)	1595	aioreq_pri (int pri = 0)
1080	PROTOTYPE: ;$
1081	CODE:	1596	CODE:
1082	RETVAL = next_pri;	1597	RETVAL = next_pri;
1083	if (items > 0)	1598	if (items > 0)
1084	{	1599	{
1085	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1600	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
1097	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1612	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1098	next_pri = nice;	1613	next_pri = nice;
1099		1614
1100	void	1615	void
1101	flush ()	1616	flush ()
1102	PROTOTYPE:
1103	CODE:	1617	CODE:
1104	while (eio_nreqs ())	1618	while (eio_nreqs ())
1105	{	1619	{
1106	poll_wait ();	1620	poll_wait ();
1107	poll_cb ();	1621	poll_cb ();
1108	}	1622	}
1109		1623
1110	int	1624	int
1111	poll()	1625	poll ()
1112	PROTOTYPE:
1113	CODE:	1626	CODE:
1114	poll_wait ();	1627	poll_wait ();
1115	RETVAL = poll_cb ();	1628	RETVAL = poll_cb ();
1116	OUTPUT:	1629	OUTPUT:
1117	RETVAL	1630	RETVAL
1118		1631
1119	int	1632	int
1120	poll_fileno()	1633	poll_fileno ()
1121	PROTOTYPE:
1122	CODE:	1634	CODE:
1123	RETVAL = s_epipe_fd (&respipe);	1635	RETVAL = s_epipe_fd (&respipe);
1124	OUTPUT:	1636	OUTPUT:
1125	RETVAL	1637	RETVAL
1126		1638
1127	int	1639	int
1128	poll_cb(...)	1640	poll_cb (...)
1129	PROTOTYPE:	1641	PROTOTYPE:
1130	CODE:	1642	CODE:
1131	RETVAL = poll_cb ();	1643	RETVAL = poll_cb ();
1132	OUTPUT:	1644	OUTPUT:
1133	RETVAL	1645	RETVAL
1134		1646
1135	void	1647	void
1136	poll_wait()	1648	poll_wait ()
1137	PROTOTYPE:
1138	CODE:	1649	CODE:
1139	poll_wait ();	1650	poll_wait ();
1140		1651
1141	int	1652	int
1142	nreqs()	1653	nreqs ()
1143	PROTOTYPE:
1144	CODE:	1654	CODE:
1145	RETVAL = eio_nreqs ();	1655	RETVAL = eio_nreqs ();
1146	OUTPUT:	1656	OUTPUT:
1147	RETVAL	1657	RETVAL
1148		1658
1149	int	1659	int
1150	nready()	1660	nready ()
1151	PROTOTYPE:
1152	CODE:	1661	CODE:
1153	RETVAL = eio_nready ();	1662	RETVAL = eio_nready ();
1154	OUTPUT:	1663	OUTPUT:
1155	RETVAL	1664	RETVAL
1156		1665
1157	int	1666	int
1158	npending()	1667	npending ()
1159	PROTOTYPE:
1160	CODE:	1668	CODE:
1161	RETVAL = eio_npending ();	1669	RETVAL = eio_npending ();
1162	OUTPUT:	1670	OUTPUT:
1163	RETVAL	1671	RETVAL
1164		1672
1165	int	1673	int
1166	nthreads()	1674	nthreads ()
1167	PROTOTYPE:
1168	CODE:	1675	CODE:
1169	RETVAL = eio_nthreads ();	1676	RETVAL = eio_nthreads ();
1170	OUTPUT:	1677	OUTPUT:
1171	RETVAL	1678	RETVAL
1172		1679
1173	int	1680	int
1174	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)	1681	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1175	PROTOTYPE: $$$$
1176	CODE:	1682	CODE:
1177	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1178	RETVAL = posix_fadvise (fh, offset, length, advice);	1683	RETVAL = posix_fadvise (fh, offset, length, advice);
1179	#else
1180	RETVAL = errno = ENOSYS;
1181	#endif
1182	OUTPUT:	1684	OUTPUT:
1183	RETVAL	1685	RETVAL
1184		1686
1185	ssize_t	1687	IV
1186	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)	1688	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1187	PROTOTYPE: $$$$
1188	CODE:	1689	CODE:
1189	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);	1690	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1190	OUTPUT:	1691	OUTPUT:
1191	RETVAL	1692	RETVAL
1192		1693
		1694	void
		1695	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1696	PPCODE:
		1697	sv_unmagic (scalar, MMAP_MAGIC);
		1698	{
		1699	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1700	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1701	if (addr == (void *)-1)
		1702	XSRETURN_NO;
		1703
		1704	sv_force_normal (scalar);
		1705
		1706	/* we store the length in mg_obj, as namlen is I32 :/ */
		1707	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1708	->mg_obj = (SV *)length;
		1709
		1710	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1711
		1712	if (!(prot & PROT_WRITE))
		1713	SvREADONLY_on (scalar);
		1714
		1715	if (SvLEN (scalar))
		1716	Safefree (SvPVX (scalar));
		1717
		1718	SvPVX (scalar) = (char *)addr;
		1719	SvCUR_set (scalar, length);
		1720	SvLEN_set (scalar, 0);
		1721	SvPOK_only (scalar);
		1722
		1723	XSRETURN_YES;
		1724	}
		1725
		1726	void
		1727	munmap (SV *scalar)
		1728	CODE:
		1729	sv_unmagic (scalar, MMAP_MAGIC);
		1730
		1731	int
		1732	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1733	ALIAS:
		1734	mprotect = 1
		1735	CODE:
		1736	{
		1737	STRLEN svlen;
		1738	void *addr = SvPVbyte (scalar, svlen);
		1739	size_t len = SvUV (length);
		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	addr = (void *)(((intptr_t)addr) + offset);
		1751	eio_page_align (&addr, &len);
		1752
		1753	switch (ix)
		1754	{
		1755	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1756	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1757	}
		1758	}
		1759	OUTPUT:
		1760	RETVAL
		1761
		1762	int
		1763	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1764	CODE:
		1765	{
		1766	STRLEN svlen;
		1767	void *addr = SvPVbyte (scalar, svlen);
		1768	size_t len = SvUV (length);
		1769
		1770	if (offset < 0)
		1771	offset += svlen;
		1772
		1773	if (offset < 0 || offset > svlen)
		1774	croak ("offset outside of scalar");
		1775
		1776	if (!SvOK (length) || len + offset > svlen)
		1777	len = svlen - offset;
		1778
		1779	addr = (void *)(((intptr_t)addr) + offset);
		1780	eio_page_align (&addr, &len);
		1781	#if _POSIX_MEMLOCK_RANGE
		1782	RETVAL = munlock (addr, len);
		1783	#else
		1784	RETVAL = EIO_ENOSYS ();
		1785	#endif
		1786	}
		1787	OUTPUT:
		1788	RETVAL
		1789
		1790	int
		1791	munlockall ()
		1792	CODE:
		1793	#if _POSIX_MEMLOCK
		1794	munlockall ();
		1795	#else
		1796	RETVAL = EIO_ENOSYS ();
		1797	#endif
		1798	OUTPUT:
		1799	RETVAL
		1800
		1801	int
		1802	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1803	CODE:
		1804	{
		1805	#if HAVE_LINUX_SPLICE
		1806	loff_t off_in_, off_out_;
		1807	RETVAL = splice (
		1808	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1809	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1810	length, flags
		1811	);
		1812	#else
		1813	RETVAL = EIO_ENOSYS ();
		1814	#endif
		1815	}
		1816	OUTPUT:
		1817	RETVAL
		1818
		1819	int
		1820	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1821	CODE:
		1822	#if HAVE_LINUX_SPLICE
		1823	RETVAL = tee (rfh, wfh, length, flags);
		1824	#else
		1825	RETVAL = EIO_ENOSYS ();
		1826	#endif
		1827	OUTPUT:
		1828	RETVAL
		1829
1193	void _on_next_submit (SV *cb)	1830	void _on_next_submit (SV *cb)
1194	CODE:	1831	CODE:
1195	SvREFCNT_dec (on_next_submit);	1832	SvREFCNT_dec (on_next_submit);
1196	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	1833	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1197		1834
1198	PROTOTYPES: DISABLE	1835	PROTOTYPES: DISABLE
1199		1836
		1837	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1838
		1839	BOOT:
		1840	{
		1841	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1842	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1843	}
		1844
		1845	void
		1846	DESTROY (SV *self)
		1847	CODE:
		1848	{
		1849	aio_wd wd = SvAIO_WD (self);
		1850	#if HAVE_AT
		1851	{
		1852	SV *callback = &PL_sv_undef;
		1853	dREQ; /* clobbers next_pri :/ */
		1854	next_pri = req->pri; /* restore next_pri */
		1855	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1856	req->type = EIO_WD_CLOSE;
		1857	req->wd = wd;
		1858	REQ_SEND;
		1859	}
		1860	#else
		1861	eio_wd_close_sync (wd);
		1862	#endif
		1863	}
		1864
1200	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1865	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1201		1866
1202	void	1867	void
1203	cancel (aio_req_ornot req)	1868	cancel (aio_req_ornot req)
1204	CODE:	1869	CODE:

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