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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.157 by root, Sat Jan 2 12:58:37 2010 UTC vs.
Revision 1.220 by root, Mon Jul 30 16:44:12 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	/* assume some c99 */
		171	struct fiemap *fiemap = 0;
		172	size_t end_offset;
		173	int count = req->int3;
		174
		175	req->flags |= EIO_FLAG_PTR1_FREE;
		176
		177	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		178	/* increase in 3.5kb steps */
		179	if (count < 0)
		180	count = 8;
		181
		182	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		183	errno = ENOMEM;
		184	if (!fiemap)
		185	return;
		186
		187	req->ptr1 = fiemap;
		188
		189	fiemap->fm_start = req->offs;
		190	fiemap->fm_length = req->size;
		191	fiemap->fm_flags = req->int2;
		192	fiemap->fm_extent_count = count;
		193
		194	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		195	return;
		196
		197	if (req->int3 >= 0 /* not autosizing */
		198	|| !fiemap->fm_mapped_extents /* no more extents */
		199	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		200	goto done;
		201
		202	/* else we have to loop -
		203	* it would be tempting (atcually I tried that first) to just query the
		204	* number of extents needed, but linux often feels like not returning all
		205	* extents, without telling us it left any out. this complicates
		206	* this quite a bit.
		207	*/
		208
		209	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		210
		211	for (;;)
		212	{
		213	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		214	char scratch[3072];
		215	struct fiemap *incmap = (struct fiemap *)scratch;
		216
		217	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		218	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		219	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		220	incmap->fm_flags = fiemap->fm_flags;
		221	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		222
		223	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap))
		224	return;
		225
		226	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		227	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		228	errno = ENOMEM;
		229	if (!fiemap)
		230	return;
		231
		232	req->ptr1 = fiemap;
		233
		234	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		235	{
		236	struct fiemap_extent *e = incmap->fm_extents + count;
		237
		238	if (e->fe_logical + e->fe_length >= end_offset)
		239	goto done;
		240
		241	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		242
		243	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		244	goto done;
		245
		246	}
		247	}
		248
		249	done:
		250	req->result = 0;
		251
		252	#else
		253	errno = ENOSYS;
		254	#endif
		255	}
		256
		257	/*****************************************************************************/
		258
150	enum {	259	enum {
151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	260	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
152	};	261	};
153		262
154	#include "libeio/eio.c"
155
156	typedef eio_req *aio_req;	263	typedef eio_req *aio_req;
157	typedef eio_req *aio_req_ornot;	264	typedef eio_req *aio_req_ornot;
		265	typedef eio_wd aio_wd;
158		266
159	static SV *on_next_submit;	267	static SV *on_next_submit;
160	static int next_pri = EIO_PRI_DEFAULT;	268	static int next_pri = EIO_PRI_DEFAULT;
161	static int max_outstanding;	269	static int max_outstanding;
162		270
163	static s_epipe respipe;	271	static s_epipe respipe;
164		272
165	static void req_destroy (aio_req req);	273	static void req_destroy (aio_req req);
166	static void req_cancel (aio_req req);	274	static void req_cancel (aio_req req);
167		275
168	static void want_poll (void)	276	static void
		277	want_poll (void)
169	{	278	{
170	/* write a dummy byte to the pipe so fh becomes ready */	279	/* write a dummy byte to the pipe so fh becomes ready */
171	s_epipe_signal (&respipe);	280	s_epipe_signal (&respipe);
172	}	281	}
173		282
174	static void done_poll (void)	283	static void
		284	done_poll (void)
175	{	285	{
176	/* read any signals sent by the worker threads */	286	/* read any signals sent by the worker threads */
177	s_epipe_drain (&respipe);	287	s_epipe_drain (&respipe);
178	}	288	}
179		289
180	/* must be called at most once */	290	/* must be called at most once */
		291	static SV *
181	static SV *req_sv (aio_req req, HV *stash)	292	req_sv (aio_req req, HV *stash)
182	{	293	{
183	if (!req->self)	294	if (!req->self)
184	{	295	{
185	req->self = (SV *)newHV ();	296	req->self = (SV *)newHV ();
186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	297	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
187	}	298	}
188		299
189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));	300	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
190	}	301	}
191		302
192	static aio_req SvAIO_REQ (SV *sv)	303	static SV *
		304	newSVaio_wd (aio_wd wd)
		305	{
		306	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		307	}
		308
		309	static aio_req
		310	SvAIO_REQ (SV *sv)
193	{	311	{
194	MAGIC *mg;	312	MAGIC *mg;
195		313
196	if (!SvROK (sv)	314	if (!SvROK (sv)
		315	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash	316	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
198	&& SvSTASH (SvRV (sv)) != aio_req_stash	317	&& SvSTASH (SvRV (sv)) != aio_req_stash
199	&& !sv_derived_from (sv, "IO::AIO::REQ")))	318	&& !sv_derived_from (sv, "IO::AIO::REQ")))
200	croak ("object of class IO::AIO::REQ expected");	319	croak ("object of class IO::AIO::REQ expected");
201		320
202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	321	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
203		322
204	return mg ? (aio_req)mg->mg_ptr : 0;	323	return mg ? (aio_req)mg->mg_ptr : 0;
205	}	324	}
206		325
		326	static aio_wd
		327	SvAIO_WD (SV *sv)
		328	{
		329	if (!SvROK (sv)
		330	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		331	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		332	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		333
		334	return (aio_wd)(long)SvIVX (SvRV (sv));
		335	}
		336
		337	static void
207	static void aio_grp_feed (aio_req grp)	338	aio_grp_feed (aio_req grp)
208	{	339	{
209	if (grp->sv2 && SvOK (grp->sv2))	340	if (grp->sv2 && SvOK (grp->sv2))
210	{	341	{
211	dSP;	342	dSP;
212		343
…		…
220	FREETMPS;	351	FREETMPS;
221	LEAVE;	352	LEAVE;
222	}	353	}
223	}	354	}
224		355
		356	static void
225	static void req_submit (eio_req *req)	357	req_submit (eio_req *req)
226	{	358	{
227	eio_submit (req);	359	eio_submit (req);
228		360
229	if (expect_false (on_next_submit))	361	if (expect_false (on_next_submit))
230	{	362	{
…		…
237	PUTBACK;	369	PUTBACK;
238	call_sv (cb, G_DISCARD | G_EVAL);	370	call_sv (cb, G_DISCARD | G_EVAL);
239	}	371	}
240	}	372	}
241		373
		374	static int
242	static int req_invoke (eio_req *req)	375	req_invoke (eio_req *req)
243	{	376	{
244	dSP;
245
246	if (req->flags & FLAG_SV2_RO_OFF)	377	if (req->flags & FLAG_SV2_RO_OFF)
247	SvREADONLY_off (req->sv2);	378	SvREADONLY_off (req->sv2);
248		379
249	if (!EIO_CANCELLED (req) && req->callback)	380	if (!EIO_CANCELLED (req) && req->callback)
250	{	381	{
		382	dSP;
		383	static SV *sv_result_cache; /* caches the result integer SV */
		384	SV *sv_result;
		385
251	ENTER;	386	ENTER;
252	SAVETMPS;	387	SAVETMPS;
253	PUSHMARK (SP);	388	PUSHMARK (SP);
254	EXTEND (SP, 1);	389	EXTEND (SP, 1);
255		390
		391	/* do not recreate the result IV from scratch each time */
		392	if (expect_true (sv_result_cache))
		393	{
		394	sv_result = sv_result_cache; sv_result_cache = 0;
		395	SvIV_set (sv_result, req->result);
		396	SvIOK_only (sv_result);
		397	}
		398	else
		399	{
		400	sv_result = newSViv (req->result);
		401	SvREADONLY_on (sv_result);
		402	}
		403
256	switch (req->type)	404	switch (req->type)
257	{	405	{
		406	case EIO_WD_OPEN:
		407	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		408	break;
		409
258	case EIO_READDIR:	410	case EIO_READDIR:
259	{	411	{
260	SV *rv = &PL_sv_undef;	412	SV *rv = &PL_sv_undef;
261		413
262	if (req->result >= 0)	414	if (req->result >= 0)
…		…
345		497
346	PUSHs (fh);	498	PUSHs (fh);
347	}	499	}
348	break;	500	break;
349		501
		502	case EIO_STATVFS:
		503	case EIO_FSTATVFS:
		504	{
		505	SV *rv = &PL_sv_undef;
		506
		507	#ifndef _WIN32
		508	if (req->result >= 0)
		509	{
		510	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		511	HV *hv = newHV ();
		512
		513	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		514
		515	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		516	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		517	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		518	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		519	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		520	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		521	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		522	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		523	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		524	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		525	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		526	}
		527	#endif
		528
		529	PUSHs (rv);
		530	}
		531
		532	break;
		533
350	case EIO_GROUP:	534	case EIO_GROUP:
351	req->int1 = 2; /* mark group as finished */	535	req->int1 = 2; /* mark group as finished */
352		536
353	if (req->sv1)	537	if (req->sv1)
354	{	538	{
…		…
364	case EIO_NOP:	548	case EIO_NOP:
365	case EIO_BUSY:	549	case EIO_BUSY:
366	break;	550	break;
367		551
368	case EIO_READLINK:	552	case EIO_READLINK:
		553	case EIO_REALPATH:
369	if (req->result > 0)	554	if (req->result > 0)
370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	555	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
371	break;	556	break;
372		557
373	case EIO_STAT:	558	case EIO_STAT:
374	case EIO_LSTAT:	559	case EIO_LSTAT:
375	case EIO_FSTAT:	560	case EIO_FSTAT:
376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	561	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		562
377	PL_laststatval = req->result;	563	if (!(PL_laststatval = req->result))
		564	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	565	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
379	PUSHs (sv_2mortal (newSViv (req->result)));	566
		567	PUSHs (sv_result);
		568	break;
		569
		570	case EIO_SEEK:
		571	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
380	break;	572	break;
381		573
382	case EIO_READ:	574	case EIO_READ:
383	{	575	{
384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	576	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
385	*SvEND (req->sv2) = 0;	577	*SvEND (req->sv2) = 0;
386	SvPOK_only (req->sv2);	578	SvPOK_only (req->sv2);
387	SvSETMAGIC (req->sv2);	579	SvSETMAGIC (req->sv2);
388	PUSHs (sv_2mortal (newSViv (req->result)));	580	PUSHs (sv_result);
389	}	581	}
390	break;	582	break;
391		583
392	case EIO_DUP2:	584	case EIO_CUSTOM:
		585	if (req->feed == fiemap)
		586	{
		587	#if HAVE_FIEMAP
		588	if (!req->result)
		589	{
		590	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		591
		592	if (fiemap->fm_extent_count)
		593	{
		594	AV *av = newAV ();
		595	int i;
		596
		597	while (fiemap->fm_mapped_extents)
		598	{
		599	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		600	AV *ext_av = newAV ();
		601
		602	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		603	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		604	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		605	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		606
		607	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		608	}
		609
		610	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		611	}
		612	else
		613	{
		614	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		615	PUSHs (sv_result);
		616	}
		617	}
		618	#endif
		619	}
		620	else
		621	PUSHs (sv_result);
		622	break;
		623
		624	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
393	if (req->result > 0)	625	if (req->result > 0)
394	req->result = 0;	626	SvIV_set (sv_result, 0);
395	/* FALLTHROUGH */	627	/* FALLTHROUGH */
396		628
397	default:	629	default:
398	PUSHs (sv_2mortal (newSViv (req->result)));	630	PUSHs (sv_result);
399	break;	631	break;
400	}	632	}
401		633
402	errno = req->errorno;	634	errno = req->errorno;
403		635
404	PUTBACK;	636	PUTBACK;
405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	637	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
406	SPAGAIN;	638	SPAGAIN;
407		639
		640	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		641	SvREFCNT_dec (sv_result);
		642	else
		643	sv_result_cache = sv_result;
		644
408	FREETMPS;	645	FREETMPS;
409	LEAVE;	646	LEAVE;
410		647
411	PUTBACK;	648	PUTBACK;
412	}	649	}
413		650
414	return !!SvTRUE (ERRSV);	651	return !!SvTRUE (ERRSV);
415	}	652	}
416		653
		654	static void
417	static void req_destroy (aio_req req)	655	req_destroy (aio_req req)
418	{	656	{
419	if (req->self)	657	if (req->self)
420	{	658	{
421	sv_unmagic (req->self, PERL_MAGIC_ext);	659	sv_unmagic (req->self, PERL_MAGIC_ext);
422	SvREFCNT_dec (req->self);	660	SvREFCNT_dec (req->self);
423	}	661	}
424		662
425	SvREFCNT_dec (req->sv1);	663	SvREFCNT_dec (req->sv1);
426	SvREFCNT_dec (req->sv2);	664	SvREFCNT_dec (req->sv2);
		665	SvREFCNT_dec (req->sv3);
		666	SvREFCNT_dec (req->sv4);
427	SvREFCNT_dec (req->callback);	667	SvREFCNT_dec (req->callback);
428		668
429	Safefree (req);	669	free (req);
430	}	670	}
431		671
		672	static void
432	static void req_cancel_subs (aio_req grp)	673	req_cancel_subs (aio_req grp)
433	{	674	{
434	aio_req sub;
435
436	if (grp->type != EIO_GROUP)	675	if (grp->type != EIO_GROUP)
437	return;	676	return;
438		677
439	SvREFCNT_dec (grp->sv2);	678	SvREFCNT_dec (grp->sv2);
440	grp->sv2 = 0;	679	grp->sv2 = 0;
441		680
442	eio_grp_cancel (grp);	681	eio_grp_cancel (grp);
443	}	682	}
444		683
445	static void	684	static void ecb_cold
446	create_respipe (void)	685	create_respipe (void)
447	{	686	{
448	if (s_epipe_renew (&respipe))	687	if (s_epipe_renew (&respipe))
449	croak ("IO::AIO: unable to initialize result pipe");	688	croak ("IO::AIO: unable to initialize result pipe");
450	}	689	}
451		690
452	static void poll_wait (void)	691	static void
		692	poll_wait (void)
453	{	693	{
454	while (eio_nreqs ())	694	while (eio_nreqs ())
455	{	695	{
456	int size;	696	int size;
457		697
…		…
466		706
467	s_epipe_wait (&respipe);	707	s_epipe_wait (&respipe);
468	}	708	}
469	}	709	}
470		710
471	static int poll_cb (void)	711	static int
		712	poll_cb (void)
472	{	713	{
473	for (;;)	714	for (;;)
474	{	715	{
475	int res = eio_poll ();	716	int res = eio_poll ();
476		717
…		…
482		723
483	poll_wait ();	724	poll_wait ();
484	}	725	}
485	}	726	}
486		727
487	static void atfork_child (void)	728	static void ecb_cold
		729	reinit (void)
488	{	730	{
489	create_respipe ();	731	create_respipe ();
		732
		733	if (eio_init (want_poll, done_poll) < 0)
		734	croak ("IO::AIO: unable to initialise eio library");
490	}	735	}
		736
		737	/*****************************************************************************/
		738
		739	#if !_POSIX_MAPPED_FILES
		740	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		741	# define munmap(addr,length) EIO_ENOSYS ()
		742	#endif
		743
		744	#if !_POSIX_MEMORY_PROTECTION
		745	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		746	# define PROT_NONE 0
		747	# define PROT_WRITE 0
		748	# define MAP_PRIVATE 0
		749	# define MAP_SHARED 0
		750	# define MAP_FIXED 0
		751	#endif
		752
		753	#define MMAP_MAGIC PERL_MAGIC_ext
		754
		755	static int ecb_cold
		756	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		757	{
		758	int old_errno = errno;
		759	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		760	errno = old_errno;
		761
		762	mg->mg_obj = 0; /* just in case */
		763
		764	SvREADONLY_off (sv);
		765
		766	if (SvPVX (sv) != mg->mg_ptr)
		767	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		768
		769	SvCUR_set (sv, 0);
		770	SvPVX (sv) = 0;
		771	SvOK_off (sv);
		772
		773	return 0;
		774	}
		775
		776	static MGVTBL mmap_vtbl = {
		777	0, 0, 0, 0, mmap_free
		778	};
		779
		780	/*****************************************************************************/
491		781
492	static SV *	782	static SV *
493	get_cb (SV *cb_sv)	783	get_cb (SV *cb_sv)
494	{	784	{
495	SvGETMAGIC (cb_sv);	785	SvGETMAGIC (cb_sv);
496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;	786	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
497	}	787	}
498		788
		789	static aio_req ecb_noinline
		790	dreq (SV *callback)
		791	{
		792	SV *cb_cv;
		793	aio_req req;
		794	int req_pri = next_pri;
		795	next_pri = EIO_PRI_DEFAULT;
		796
		797	cb_cv = get_cb (callback);
		798
		799	req = calloc (sizeof (*req), 1);
		800	if (!req)
		801	croak ("out of memory during eio_req allocation");
		802
		803	req->callback = SvREFCNT_inc (cb_cv);
		804	req->pri = req_pri;
		805
		806	return req;
		807	}
		808
499	#define dREQ \	809	#define dREQ \
500	SV *cb_cv; \	810	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		811
514	#define REQ_SEND \	812	#define REQ_SEND \
515	PUTBACK; \	813	PUTBACK; \
516	req_submit (req); \	814	req_submit (req); \
517	SPAGAIN; \	815	SPAGAIN; \
518	\	816	\
519	if (GIMME_V != G_VOID) \	817	if (GIMME_V != G_VOID) \
520	XPUSHs (req_sv (req, aio_req_stash));	818	XPUSHs (req_sv (req, aio_req_stash));
521		819
		820	ecb_inline void
		821	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		822	{
		823	if (expect_false (SvROK (path)))
		824	{
		825	SV *rv = SvRV (path);
		826	SV *wdob;
		827
		828	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		829	{
		830	path = AvARRAY (rv)[1];
		831	wdob = AvARRAY (rv)[0];
		832
		833	if (SvOK (wdob))
		834	{
		835	*wd = SvAIO_WD (wdob);
		836	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		837	}
		838	else
		839	*wd = EIO_INVALID_WD;
		840	}
		841	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		842	{
		843	*wd = (aio_wd)(long)SvIVX (rv);
		844	*wdsv = SvREFCNT_inc_NN (rv);
		845	*ptr = ".";
		846	return; /* path set to "." */
		847	}
		848	else
		849	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		850	}
		851
		852	*pathsv = newSVsv (path);
		853	*ptr = SvPVbyte_nolen (*pathsv);
		854	}
		855
		856	static void ecb_noinline
		857	req_set_path1 (aio_req req, SV *path)
		858	{
		859	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		860	}
		861
		862	static void ecb_noinline
		863	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		864	{
		865	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		866
		867	switch (SvTYPE (rv))
		868	{
		869	case SVt_PVIO:
		870	case SVt_PVLV:
		871	case SVt_PVGV:
		872	req->type = type_fh;
		873	req->sv1 = newSVsv (fh_or_path);
		874	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		875	break;
		876
		877	default:
		878	req->type = type_path;
		879	req_set_path1 (req, fh_or_path);
		880	break;
		881	}
		882	}
		883
		884	XS(boot_IO__AIO) ecb_cold;
		885
522	MODULE = IO::AIO PACKAGE = IO::AIO	886	MODULE = IO::AIO PACKAGE = IO::AIO
523		887
524	PROTOTYPES: ENABLE	888	PROTOTYPES: ENABLE
525		889
526	BOOT:	890	BOOT:
527	{	891	{
528	static const struct {	892	static const struct {
529	const char *name;	893	const char *name;
530	IV iv;	894	IV iv;
531	} *civ, const_iv[] = {	895	} *civ, const_iv[] = {
532	# define const_iv(name, value) { # name, (IV) value },	896	# define const_niv(name, value) { # name, (IV) value },
		897	# define const_iv(name) { # name, (IV) name },
533	# define const_eio(name) { # name, (IV) EIO_ ## name },	898	# define const_eio(name) { # name, (IV) EIO_ ## name },
534	const_iv (EXDEV , EXDEV)	899
		900	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		901
535	const_iv (ENOSYS , ENOSYS)	902	const_iv (ENOSYS)
		903	const_iv (EXDEV)
		904	const_iv (EBADR)
		905
536	const_iv (O_RDONLY, O_RDONLY)	906	const_iv (O_RDONLY)
537	const_iv (O_WRONLY, O_WRONLY)	907	const_iv (O_WRONLY)
		908	const_iv (O_RDWR)
538	const_iv (O_CREAT , O_CREAT)	909	const_iv (O_CREAT)
539	const_iv (O_TRUNC , O_TRUNC)	910	const_iv (O_TRUNC)
540	#ifndef _WIN32	911	const_iv (O_EXCL)
		912	const_iv (O_APPEND)
		913
		914	const_iv (O_ASYNC)
		915	const_iv (O_DIRECT)
		916	const_iv (O_NOATIME)
		917
		918	const_iv (O_CLOEXEC)
		919	const_iv (O_NOCTTY)
		920	const_iv (O_NOFOLLOW)
		921	const_iv (O_NONBLOCK)
		922	const_iv (O_EXEC)
		923	const_iv (O_SEARCH)
		924	const_iv (O_DIRECTORY)
		925	const_iv (O_DSYNC)
		926	const_iv (O_RSYNC)
		927	const_iv (O_SYNC)
		928	const_iv (O_TTY_INIT)
		929
541	const_iv (S_IFIFO , S_IFIFO)	930	const_iv (S_IFIFO)
542	#endif	931	const_iv (S_IFCHR)
		932	const_iv (S_IFBLK)
		933	const_iv (S_IFLNK)
		934	const_iv (S_IFREG)
		935	const_iv (S_IFDIR)
		936	const_iv (S_IFWHT)
		937	const_iv (S_IFSOCK)
		938	const_iv (S_IFMT)
		939
543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)	940	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)	941	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)	942	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)	943	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)	944	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)	945	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		946
		947	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		948	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		949	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		950	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		951	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		952
		953	const_iv (ST_RDONLY)
		954	const_iv (ST_NOSUID)
		955	const_iv (ST_NODEV)
		956	const_iv (ST_NOEXEC)
		957	const_iv (ST_SYNCHRONOUS)
		958	const_iv (ST_MANDLOCK)
		959	const_iv (ST_WRITE)
		960	const_iv (ST_APPEND)
		961	const_iv (ST_IMMUTABLE)
		962	const_iv (ST_NOATIME)
		963	const_iv (ST_NODIRATIME)
		964	const_iv (ST_RELATIME)
		965
		966	const_iv (PROT_NONE)
		967	const_iv (PROT_EXEC)
		968	const_iv (PROT_READ)
		969	const_iv (PROT_WRITE)
		970
		971	/*const_iv (MAP_FIXED)*/
		972	const_iv (MAP_PRIVATE)
		973	const_iv (MAP_SHARED)
		974	const_iv (MAP_ANONYMOUS)
		975
		976	/* linuxish */
		977	const_iv (MAP_HUGETLB)
		978	const_iv (MAP_LOCKED)
		979	const_iv (MAP_NORESERVE)
		980	const_iv (MAP_POPULATE)
		981	const_iv (MAP_NONBLOCK)
		982
		983	const_iv (FIEMAP_FLAG_SYNC)
		984	const_iv (FIEMAP_FLAG_XATTR)
		985	const_iv (FIEMAP_FLAGS_COMPAT)
		986	const_iv (FIEMAP_EXTENT_LAST)
		987	const_iv (FIEMAP_EXTENT_UNKNOWN)
		988	const_iv (FIEMAP_EXTENT_DELALLOC)
		989	const_iv (FIEMAP_EXTENT_ENCODED)
		990	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		991	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		992	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		993	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		994	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		995	const_iv (FIEMAP_EXTENT_MERGED)
		996	const_iv (FIEMAP_EXTENT_SHARED)
		997
		998	const_iv (SPLICE_F_MOVE)
		999	const_iv (SPLICE_F_NONBLOCK)
		1000	const_iv (SPLICE_F_MORE)
		1001	const_iv (SPLICE_F_GIFT)
		1002
		1003	const_iv (SEEK_DATA)
		1004	const_iv (SEEK_HOLE)
		1005
		1006	/* libeio constants */
		1007	const_eio (SEEK_SET)
		1008	const_eio (SEEK_CUR)
		1009	const_eio (SEEK_END)
		1010
		1011	const_eio (MCL_FUTURE)
		1012	const_eio (MCL_CURRENT)
		1013
		1014	const_eio (MS_ASYNC)
		1015	const_eio (MS_INVALIDATE)
		1016	const_eio (MS_SYNC)
		1017
		1018	const_eio (MT_MODIFY)
549		1019
550	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)	1020	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
551	const_eio (SYNC_FILE_RANGE_WRITE)	1021	const_eio (SYNC_FILE_RANGE_WRITE)
552	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)	1022	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1023
		1024	const_eio (FALLOC_FL_KEEP_SIZE)
		1025	const_eio (FALLOC_FL_PUNCH_HOLE)
553		1026
554	const_eio (READDIR_DENTS)	1027	const_eio (READDIR_DENTS)
555	const_eio (READDIR_DIRS_FIRST)	1028	const_eio (READDIR_DIRS_FIRST)
556	const_eio (READDIR_STAT_ORDER)	1029	const_eio (READDIR_STAT_ORDER)
557	const_eio (READDIR_FOUND_UNKNOWN)	1030	const_eio (READDIR_FOUND_UNKNOWN)
…		…
568	};	1041	};
569		1042
570	aio_stash = gv_stashpv ("IO::AIO" , 1);	1043	aio_stash = gv_stashpv ("IO::AIO" , 1);
571	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);	1044	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
572	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);	1045	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1046	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
573		1047
574	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )	1048	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
575	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));	1049	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
576		1050
577	create_respipe ();	1051	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
578		1052
579	if (eio_init (want_poll, done_poll) < 0)	1053	reinit ();
580	croak ("IO::AIO: unable to initialise eio library");
581
582	/* atfork child called in fifo order, so before eio's handler */
583	X_THREAD_ATFORK (0, 0, atfork_child);
584	}	1054	}
585		1055
586	void	1056	void
		1057	reinit ()
		1058	PROTOTYPE:
		1059
		1060	void
587	max_poll_reqs (int nreqs)	1061	max_poll_reqs (unsigned int nreqs)
588	PROTOTYPE: $	1062	PROTOTYPE: $
589	CODE:	1063	CODE:
590	eio_set_max_poll_reqs (nreqs);	1064	eio_set_max_poll_reqs (nreqs);
591		1065
592	void	1066	void
…		…
594	PROTOTYPE: $	1068	PROTOTYPE: $
595	CODE:	1069	CODE:
596	eio_set_max_poll_time (nseconds);	1070	eio_set_max_poll_time (nseconds);
597		1071
598	void	1072	void
599	min_parallel (int nthreads)	1073	min_parallel (unsigned int nthreads)
600	PROTOTYPE: $	1074	PROTOTYPE: $
601	CODE:	1075	CODE:
602	eio_set_min_parallel (nthreads);	1076	eio_set_min_parallel (nthreads);
603		1077
604	void	1078	void
605	max_parallel (int nthreads)	1079	max_parallel (unsigned int nthreads)
606	PROTOTYPE: $	1080	PROTOTYPE: $
607	CODE:	1081	CODE:
608	eio_set_max_parallel (nthreads);	1082	eio_set_max_parallel (nthreads);
609		1083
610	void	1084	void
611	max_idle (int nthreads)	1085	max_idle (unsigned int nthreads)
612	PROTOTYPE: $	1086	PROTOTYPE: $
613	CODE:	1087	CODE:
614	eio_set_max_idle (nthreads);	1088	eio_set_max_idle (nthreads);
615		1089
616	void	1090	void
		1091	idle_timeout (unsigned int seconds)
		1092	PROTOTYPE: $
		1093	CODE:
		1094	eio_set_idle_timeout (seconds);
		1095
		1096	void
617	max_outstanding (int maxreqs)	1097	max_outstanding (unsigned int maxreqs)
618	PROTOTYPE: $	1098	PROTOTYPE: $
619	CODE:	1099	CODE:
620	max_outstanding = maxreqs;	1100	max_outstanding = maxreqs;
621		1101
622	void	1102	void
		1103	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_WD_OPEN;
		1109	req_set_path1 (req, pathname);
		1110
		1111	REQ_SEND;
		1112	}
		1113
		1114	void
623	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1115	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
624	PROTOTYPE: $$$;$
625	PPCODE:	1116	PPCODE:
626	{	1117	{
627	dREQ;	1118	dREQ;
628		1119
629	req->type = EIO_OPEN;	1120	req->type = EIO_OPEN;
630	req->sv1 = newSVsv (pathname);	1121	req_set_path1 (req, pathname);
631	req->ptr1 = SvPVbyte_nolen (req->sv1);
632	req->int1 = flags;	1122	req->int1 = flags;
633	req->int2 = mode;	1123	req->int2 = mode;
634		1124
635	REQ_SEND;	1125	REQ_SEND;
636	}	1126	}
637		1127
638	void	1128	void
639	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1129	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
640	PROTOTYPE: $;$
641	ALIAS:	1130	ALIAS:
642	aio_fsync = EIO_FSYNC	1131	aio_fsync = EIO_FSYNC
643	aio_fdatasync = EIO_FDATASYNC	1132	aio_fdatasync = EIO_FDATASYNC
		1133	aio_syncfs = EIO_SYNCFS
644	PPCODE:	1134	PPCODE:
645	{	1135	{
646	int fd = s_fileno_croak (fh, 0);	1136	int fd = s_fileno_croak (fh, 0);
647	dREQ;	1137	dREQ;
648		1138
649	req->type = ix;	1139	req->type = ix;
650	req->sv1 = newSVsv (fh);	1140	req->sv1 = newSVsv (fh);
651	req->int1 = fd;	1141	req->int1 = fd;
652		1142
653	REQ_SEND (req);	1143	REQ_SEND;
654	}	1144	}
655		1145
656	void	1146	void
657	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)	1147	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
658	PROTOTYPE: $$$$;$
659	PPCODE:	1148	PPCODE:
660	{	1149	{
661	int fd = s_fileno_croak (fh, 0);	1150	int fd = s_fileno_croak (fh, 0);
662	dREQ;	1151	dREQ;
663		1152
…		…
666	req->int1 = fd;	1155	req->int1 = fd;
667	req->offs = offset;	1156	req->offs = offset;
668	req->size = nbytes;	1157	req->size = nbytes;
669	req->int2 = flags;	1158	req->int2 = flags;
670		1159
671	REQ_SEND (req);	1160	REQ_SEND;
672	}	1161	}
673		1162
674	void	1163	void
675	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1164	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
676	PROTOTYPE: $;$
677	PPCODE:	1165	PPCODE:
678	{	1166	{
679	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
680	int fd = s_fileno_croak (fh, 0);	1167	int fd = s_fileno_croak (fh, 0);
681	dREQ;	1168	dREQ;
682		1169
683	if (close_pipe < 0)	1170	req->type = EIO_FALLOCATE;
		1171	req->sv1 = newSVsv (fh);
		1172	req->int1 = fd;
		1173	req->int2 = mode;
		1174	req->offs = offset;
		1175	req->size = len;
		1176
		1177	REQ_SEND;
		1178	}
		1179
		1180	void
		1181	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1182	PPCODE:
		1183	{
		1184	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1185	int fd = s_fileno_croak (fh, 0);
		1186	dREQ;
		1187
		1188	if (expect_false (close_fd < 0))
684	{	1189	{
685	int pipefd [2];	1190	int pipefd [2];
686		1191
		1192	if (
		1193	#ifdef _WIN32
		1194	_pipe (pipefd, 1, _O_BINARY) < 0
		1195	#else
687	if (pipe (pipefd) < 0	1196	pipe (pipefd) < 0
688	|| close (pipefd [1]) < 0
689	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1197	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1198	#endif
		1199	|| close (pipefd [1]) < 0
		1200	)
690	abort (); /*D*/	1201	abort (); /*D*/
691		1202
692	close_pipe = pipefd [0];	1203	close_fd = pipefd [0];
693	}	1204	}
694		1205
695	req->type = EIO_DUP2;	1206	req->type = EIO_DUP2;
696	req->int1 = close_pipe;	1207	req->int1 = close_fd;
697	req->sv2 = newSVsv (fh);	1208	req->sv2 = newSVsv (fh);
698	req->int2 = fd;	1209	req->int2 = fd;
699		1210
700	REQ_SEND (req);	1211	REQ_SEND;
		1212	}
		1213
		1214	void
		1215	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1216	PPCODE:
		1217	{
		1218	int fd = s_fileno_croak (fh, 0);
		1219	dREQ;
		1220
		1221	req->type = EIO_SEEK;
		1222	req->sv1 = newSVsv (fh);
		1223	req->int1 = fd;
		1224	req->offs = SvVAL64 (offset);
		1225	req->int2 = whence;
		1226
		1227	REQ_SEND;
701	}	1228	}
702		1229
703	void	1230	void
704	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1231	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
705	ALIAS:	1232	ALIAS:
706	aio_read = EIO_READ	1233	aio_read = EIO_READ
707	aio_write = EIO_WRITE	1234	aio_write = EIO_WRITE
708	PROTOTYPE: $$$$$;$
709	PPCODE:	1235	PPCODE:
710	{	1236	{
711	STRLEN svlen;	1237	STRLEN svlen;
712	int fd = s_fileno_croak (fh, ix == EIO_WRITE);	1238	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
713	char *svptr = SvPVbyte (data, svlen);	1239	char *svptr = SvPVbyte (data, svlen);
…		…
727	}	1253	}
728	else	1254	else
729	{	1255	{
730	/* read: check type and grow scalar as necessary */	1256	/* read: check type and grow scalar as necessary */
731	SvUPGRADE (data, SVt_PV);	1257	SvUPGRADE (data, SVt_PV);
		1258	if (SvLEN (data) >= SvCUR (data))
732	svptr = SvGROW (data, len + dataoffset + 1);	1259	svptr = SvGROW (data, len + dataoffset + 1);
		1260	else if (SvCUR (data) < len + dataoffset)
		1261	croak ("length + dataoffset outside of scalar, and cannot grow");
733	}	1262	}
734		1263
735	{	1264	{
736	dREQ;	1265	dREQ;
737		1266
…		…
753	REQ_SEND;	1282	REQ_SEND;
754	}	1283	}
755	}	1284	}
756		1285
757	void	1286	void
758	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1287	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
759	PROTOTYPE: $$;$	1288	ALIAS:
		1289	aio_readlink = EIO_READLINK
		1290	aio_realpath = EIO_REALPATH
760	PPCODE:	1291	PPCODE:
761	{	1292	{
762	SV *data;
763	dREQ;	1293	dREQ;
764		1294
765	req->type = EIO_READLINK;	1295	req->type = ix;
766	req->sv1 = newSVsv (path);	1296	req_set_path1 (req, pathname);
767	req->ptr1 = SvPVbyte_nolen (req->sv1);
768		1297
769	REQ_SEND;	1298	REQ_SEND;
770	}	1299	}
771		1300
772	void	1301	void
773	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)	1302	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
774	PROTOTYPE: $$$$;$
775	PPCODE:	1303	PPCODE:
776	{	1304	{
777	int ifd = s_fileno_croak (in_fh , 0);	1305	int ifd = s_fileno_croak (in_fh , 0);
778	int ofd = s_fileno_croak (out_fh, 1);	1306	int ofd = s_fileno_croak (out_fh, 1);
779	dREQ;	1307	dREQ;
…		…
789	REQ_SEND;	1317	REQ_SEND;
790	}	1318	}
791		1319
792	void	1320	void
793	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)	1321	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
794	PROTOTYPE: $$$;$
795	PPCODE:	1322	PPCODE:
796	{	1323	{
797	int fd = s_fileno_croak (fh, 0);	1324	int fd = s_fileno_croak (fh, 0);
798	dREQ;	1325	dREQ;
799		1326
…		…
807	}	1334	}
808		1335
809	void	1336	void
810	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1337	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
811	ALIAS:	1338	ALIAS:
812	aio_stat = EIO_STAT	1339	aio_stat = EIO_STAT
813	aio_lstat = EIO_LSTAT	1340	aio_lstat = EIO_LSTAT
		1341	aio_statvfs = EIO_STATVFS
814	PPCODE:	1342	PPCODE:
815	{	1343	{
816	dREQ;	1344	dREQ;
817		1345
818	req->sv1 = newSVsv (fh_or_path);	1346	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
819
820	if (SvPOK (req->sv1))
821	{
822	req->type = ix;
823	req->ptr1 = SvPVbyte_nolen (req->sv1);
824	}
825	else
826	{
827	req->type = EIO_FSTAT;
828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
829	}
830		1347
831	REQ_SEND;	1348	REQ_SEND;
832	}	1349	}
		1350
		1351	UV
		1352	major (UV dev)
		1353	ALIAS:
		1354	minor = 1
		1355	CODE:
		1356	RETVAL = ix ? major (dev) : minor (dev);
		1357	OUTPUT:
		1358	RETVAL
		1359
		1360	UV
		1361	makedev (UV maj, UV min)
		1362	CODE:
		1363	RETVAL = makedev (maj, min);
		1364	OUTPUT:
		1365	RETVAL
833		1366
834	void	1367	void
835	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1368	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
836	PPCODE:	1369	PPCODE:
837	{	1370	{
838	dREQ;	1371	dREQ;
839		1372
840	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1373	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
841	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1374	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
842	req->sv1 = newSVsv (fh_or_path);	1375	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
843
844	if (SvPOK (req->sv1))
845	{
846	req->type = EIO_UTIME;
847	req->ptr1 = SvPVbyte_nolen (req->sv1);
848	}
849	else
850	{
851	req->type = EIO_FUTIME;
852	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
853	}
854		1376
855	REQ_SEND;	1377	REQ_SEND;
856	}	1378	}
857		1379
858	void	1380	void
859	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1381	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
860	PPCODE:	1382	PPCODE:
861	{	1383	{
862	dREQ;	1384	dREQ;
863		1385
864	req->sv1 = newSVsv (fh_or_path);
865	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1386	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
866		1387	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
867	if (SvPOK (req->sv1))
868	{
869	req->type = EIO_TRUNCATE;
870	req->ptr1 = SvPVbyte_nolen (req->sv1);
871	}
872	else
873	{
874	req->type = EIO_FTRUNCATE;
875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
876	}
877		1388
878	REQ_SEND;	1389	REQ_SEND;
879	}	1390	}
880		1391
881	void	1392	void
882	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1393	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
883	ALIAS:
884	aio_chmod = EIO_CHMOD
885	aio_mkdir = EIO_MKDIR
886	PPCODE:	1394	PPCODE:
887	{	1395	{
888	dREQ;	1396	dREQ;
889		1397
890	req->int2 = mode;	1398	req->int2 = mode;
891	req->sv1 = newSVsv (fh_or_path);	1399	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
892
893	if (SvPOK (req->sv1))
894	{
895	req->type = ix;
896	req->ptr1 = SvPVbyte_nolen (req->sv1);
897	}
898	else
899	{
900	req->type = EIO_FCHMOD;
901	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
902	}
903		1400
904	REQ_SEND;	1401	REQ_SEND;
905	}	1402	}
906		1403
907	void	1404	void
…		…
910	{	1407	{
911	dREQ;	1408	dREQ;
912		1409
913	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1410	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
914	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1411	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
915	req->sv1 = newSVsv (fh_or_path);	1412	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
916
917	if (SvPOK (req->sv1))
918	{
919	req->type = EIO_CHOWN;
920	req->ptr1 = SvPVbyte_nolen (req->sv1);
921	}
922	else
923	{
924	req->type = EIO_FCHOWN;
925	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
926	}
927		1413
928	REQ_SEND;	1414	REQ_SEND;
929	}	1415	}
930		1416
931	void	1417	void
…		…
933	PPCODE:	1419	PPCODE:
934	{	1420	{
935	dREQ;	1421	dREQ;
936		1422
937	req->type = EIO_READDIR;	1423	req->type = EIO_READDIR;
938	req->sv1 = newSVsv (pathname);
939	req->ptr1 = SvPVbyte_nolen (req->sv1);
940	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;	1424	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
941		1425
942	if (flags & EIO_READDIR_DENTS)	1426	if (flags & EIO_READDIR_DENTS)
943	req->int1 |= EIO_READDIR_CUSTOM2;	1427	req->int1 |= EIO_READDIR_CUSTOM2;
944		1428
		1429	req_set_path1 (req, pathname);
		1430
945	REQ_SEND;	1431	REQ_SEND;
		1432	}
		1433
		1434	void
		1435	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1436	PPCODE:
		1437	{
		1438	dREQ;
		1439
		1440	req->type = EIO_MKDIR;
		1441	req->int2 = mode;
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
946	}	1445	}
947		1446
948	void	1447	void
949	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1448	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
950	ALIAS:	1449	ALIAS:
…		…
954	PPCODE:	1453	PPCODE:
955	{	1454	{
956	dREQ;	1455	dREQ;
957		1456
958	req->type = ix;	1457	req->type = ix;
959	req->sv1 = newSVsv (pathname);	1458	req_set_path1 (req, pathname);
960	req->ptr1 = SvPVbyte_nolen (req->sv1);
961		1459
962	REQ_SEND;	1460	REQ_SEND;
963	}	1461	}
964		1462
965	void	1463	void
…		…
968	aio_link = EIO_LINK	1466	aio_link = EIO_LINK
969	aio_symlink = EIO_SYMLINK	1467	aio_symlink = EIO_SYMLINK
970	aio_rename = EIO_RENAME	1468	aio_rename = EIO_RENAME
971	PPCODE:	1469	PPCODE:
972	{	1470	{
		1471	eio_wd wd2 = 0;
973	dREQ;	1472	dREQ;
974		1473
975	req->type = ix;	1474	req->type = ix;
976	req->sv1 = newSVsv (oldpath);	1475	req_set_path1 (req, oldpath);
977	req->ptr1 = SvPVbyte_nolen (req->sv1);	1476	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
978	req->sv2 = newSVsv (newpath);	1477	req->int3 = (long)wd2;
979	req->ptr2 = SvPVbyte_nolen (req->sv2);
980		1478
981	REQ_SEND;	1479	REQ_SEND;
982	}	1480	}
983		1481
984	void	1482	void
…		…
986	PPCODE:	1484	PPCODE:
987	{	1485	{
988	dREQ;	1486	dREQ;
989		1487
990	req->type = EIO_MKNOD;	1488	req->type = EIO_MKNOD;
991	req->sv1 = newSVsv (pathname);
992	req->ptr1 = SvPVbyte_nolen (req->sv1);
993	req->int2 = (mode_t)mode;	1489	req->int2 = (mode_t)mode;
994	req->offs = dev;	1490	req->offs = dev;
		1491	req_set_path1 (req, pathname);
995		1492
996	REQ_SEND;	1493	REQ_SEND;
997	}	1494	}
998		1495
999	void	1496	void
		1497	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1498	ALIAS:
		1499	aio_mtouch = EIO_MTOUCH
		1500	aio_msync = EIO_MSYNC
		1501	PPCODE:
		1502	{
		1503	STRLEN svlen;
		1504	char *svptr = SvPVbyte (data, svlen);
		1505	UV len = SvUV (length);
		1506
		1507	if (offset < 0)
		1508	offset += svlen;
		1509
		1510	if (offset < 0 || offset > svlen)
		1511	croak ("offset outside of scalar");
		1512
		1513	if (!SvOK (length) || len + offset > svlen)
		1514	len = svlen - offset;
		1515
		1516	{
		1517	dREQ;
		1518
		1519	req->type = ix;
		1520	req->sv2 = SvREFCNT_inc (data);
		1521	req->ptr2 = (char *)svptr + offset;
		1522	req->size = len;
		1523	req->int1 = flags;
		1524
		1525	REQ_SEND;
		1526	}
		1527	}
		1528
		1529	void
		1530	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1531	PPCODE:
		1532	{
		1533	STRLEN svlen;
		1534	char *svptr = SvPVbyte (data, svlen);
		1535	UV len = SvUV (length);
		1536
		1537	if (offset < 0)
		1538	offset += svlen;
		1539
		1540	if (offset < 0 || offset > svlen)
		1541	croak ("offset outside of scalar");
		1542
		1543	if (!SvOK (length) || len + offset > svlen)
		1544	len = svlen - offset;
		1545
		1546	{
		1547	dREQ;
		1548
		1549	req->type = EIO_MLOCK;
		1550	req->sv2 = SvREFCNT_inc (data);
		1551	req->ptr2 = (char *)svptr + offset;
		1552	req->size = len;
		1553
		1554	REQ_SEND;
		1555	}
		1556	}
		1557
		1558	void
		1559	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1560	PPCODE:
		1561	{
		1562	dREQ;
		1563
		1564	req->type = EIO_MLOCKALL;
		1565	req->int1 = flags;
		1566
		1567	REQ_SEND;
		1568	}
		1569
		1570	void
		1571	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	int fd = s_fileno_croak (fh, 0);
		1575	dREQ;
		1576
		1577	req->type = EIO_CUSTOM;
		1578	req->sv1 = newSVsv (fh);
		1579	req->int1 = fd;
		1580
		1581	req->feed = fiemap;
		1582	#if HAVE_FIEMAP
		1583	/* keep our fingers crossed that the next two types are 64 bit */
		1584	req->offs = start;
		1585	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1586	req->int2 = flags;
		1587	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1588	#endif
		1589
		1590	REQ_SEND;
		1591	}
		1592
		1593	void
1000	aio_busy (double delay, SV *callback=&PL_sv_undef)	1594	aio_busy (double delay, SV *callback=&PL_sv_undef)
1001	PPCODE:	1595	PPCODE:
1002	{	1596	{
1003	dREQ;	1597	dREQ;
1004		1598
…		…
1008	REQ_SEND;	1602	REQ_SEND;
1009	}	1603	}
1010		1604
1011	void	1605	void
1012	aio_group (SV *callback=&PL_sv_undef)	1606	aio_group (SV *callback=&PL_sv_undef)
1013	PROTOTYPE: ;$
1014	PPCODE:	1607	PPCODE:
1015	{	1608	{
1016	dREQ;	1609	dREQ;
1017		1610
1018	req->type = EIO_GROUP;	1611	req->type = EIO_GROUP;
…		…
1035	REQ_SEND;	1628	REQ_SEND;
1036	}	1629	}
1037		1630
1038	int	1631	int
1039	aioreq_pri (int pri = 0)	1632	aioreq_pri (int pri = 0)
1040	PROTOTYPE: ;$
1041	CODE:	1633	CODE:
1042	RETVAL = next_pri;	1634	RETVAL = next_pri;
1043	if (items > 0)	1635	if (items > 0)
1044	{	1636	{
1045	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1637	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
1057	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1649	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1058	next_pri = nice;	1650	next_pri = nice;
1059		1651
1060	void	1652	void
1061	flush ()	1653	flush ()
1062	PROTOTYPE:
1063	CODE:	1654	CODE:
1064	while (eio_nreqs ())	1655	while (eio_nreqs ())
1065	{	1656	{
1066	poll_wait ();	1657	poll_wait ();
1067	poll_cb ();	1658	poll_cb ();
1068	}	1659	}
1069		1660
1070	int	1661	int
1071	poll()	1662	poll ()
1072	PROTOTYPE:
1073	CODE:	1663	CODE:
1074	poll_wait ();	1664	poll_wait ();
1075	RETVAL = poll_cb ();	1665	RETVAL = poll_cb ();
1076	OUTPUT:	1666	OUTPUT:
1077	RETVAL	1667	RETVAL
1078		1668
1079	int	1669	int
1080	poll_fileno()	1670	poll_fileno ()
1081	PROTOTYPE:
1082	CODE:	1671	CODE:
1083	RETVAL = s_epipe_fd (&respipe);	1672	RETVAL = s_epipe_fd (&respipe);
1084	OUTPUT:	1673	OUTPUT:
1085	RETVAL	1674	RETVAL
1086		1675
1087	int	1676	int
1088	poll_cb(...)	1677	poll_cb (...)
1089	PROTOTYPE:	1678	PROTOTYPE:
1090	CODE:	1679	CODE:
1091	RETVAL = poll_cb ();	1680	RETVAL = poll_cb ();
1092	OUTPUT:	1681	OUTPUT:
1093	RETVAL	1682	RETVAL
1094		1683
1095	void	1684	void
1096	poll_wait()	1685	poll_wait ()
1097	PROTOTYPE:
1098	CODE:	1686	CODE:
1099	poll_wait ();	1687	poll_wait ();
1100		1688
1101	int	1689	int
1102	nreqs()	1690	nreqs ()
1103	PROTOTYPE:
1104	CODE:	1691	CODE:
1105	RETVAL = eio_nreqs ();	1692	RETVAL = eio_nreqs ();
1106	OUTPUT:	1693	OUTPUT:
1107	RETVAL	1694	RETVAL
1108		1695
1109	int	1696	int
1110	nready()	1697	nready ()
1111	PROTOTYPE:
1112	CODE:	1698	CODE:
1113	RETVAL = eio_nready ();	1699	RETVAL = eio_nready ();
1114	OUTPUT:	1700	OUTPUT:
1115	RETVAL	1701	RETVAL
1116		1702
1117	int	1703	int
1118	npending()	1704	npending ()
1119	PROTOTYPE:
1120	CODE:	1705	CODE:
1121	RETVAL = eio_npending ();	1706	RETVAL = eio_npending ();
1122	OUTPUT:	1707	OUTPUT:
1123	RETVAL	1708	RETVAL
1124		1709
1125	int	1710	int
1126	nthreads()	1711	nthreads ()
1127	PROTOTYPE:
1128	CODE:	1712	CODE:
1129	RETVAL = eio_nthreads ();	1713	RETVAL = eio_nthreads ();
1130	OUTPUT:	1714	OUTPUT:
1131	RETVAL	1715	RETVAL
1132		1716
1133	int	1717	int
1134	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)	1718	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1135	PROTOTYPE: $$$$
1136	CODE:	1719	CODE:
1137	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1138	RETVAL = posix_fadvise (fh, offset, length, advice);	1720	RETVAL = posix_fadvise (fh, offset, length, advice);
1139	#else
1140	RETVAL = errno = ENOSYS;
1141	#endif
1142	OUTPUT:	1721	OUTPUT:
1143	RETVAL	1722	RETVAL
1144		1723
1145	ssize_t	1724	IV
1146	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)	1725	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1147	PROTOTYPE: $$$$
1148	CODE:	1726	CODE:
1149	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);	1727	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1150	OUTPUT:	1728	OUTPUT:
1151	RETVAL	1729	RETVAL
1152		1730
		1731	void
		1732	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1733	PPCODE:
		1734	sv_unmagic (scalar, MMAP_MAGIC);
		1735	{
		1736	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1737	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1738	if (addr == (void *)-1)
		1739	XSRETURN_NO;
		1740
		1741	sv_force_normal (scalar);
		1742
		1743	/* we store the length in mg_obj, as namlen is I32 :/ */
		1744	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1745	->mg_obj = (SV *)length;
		1746
		1747	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1748
		1749	if (!(prot & PROT_WRITE))
		1750	SvREADONLY_on (scalar);
		1751
		1752	if (SvLEN (scalar))
		1753	Safefree (SvPVX (scalar));
		1754
		1755	SvPVX (scalar) = (char *)addr;
		1756	SvCUR_set (scalar, length);
		1757	SvLEN_set (scalar, 0);
		1758	SvPOK_only (scalar);
		1759
		1760	XSRETURN_YES;
		1761	}
		1762
		1763	void
		1764	munmap (SV *scalar)
		1765	CODE:
		1766	sv_unmagic (scalar, MMAP_MAGIC);
		1767
		1768	int
		1769	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1770	ALIAS:
		1771	mprotect = 1
		1772	CODE:
		1773	{
		1774	STRLEN svlen;
		1775	void *addr = SvPVbyte (scalar, svlen);
		1776	size_t len = SvUV (length);
		1777
		1778	if (offset < 0)
		1779	offset += svlen;
		1780
		1781	if (offset < 0 || offset > svlen)
		1782	croak ("offset outside of scalar");
		1783
		1784	if (!SvOK (length) || len + offset > svlen)
		1785	len = svlen - offset;
		1786
		1787	addr = (void *)(((intptr_t)addr) + offset);
		1788	eio_page_align (&addr, &len);
		1789
		1790	switch (ix)
		1791	{
		1792	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1793	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1794	}
		1795	}
		1796	OUTPUT:
		1797	RETVAL
		1798
		1799	int
		1800	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1801	CODE:
		1802	{
		1803	STRLEN svlen;
		1804	void *addr = SvPVbyte (scalar, svlen);
		1805	size_t len = SvUV (length);
		1806
		1807	if (offset < 0)
		1808	offset += svlen;
		1809
		1810	if (offset < 0 || offset > svlen)
		1811	croak ("offset outside of scalar");
		1812
		1813	if (!SvOK (length) || len + offset > svlen)
		1814	len = svlen - offset;
		1815
		1816	addr = (void *)(((intptr_t)addr) + offset);
		1817	eio_page_align (&addr, &len);
		1818	#if _POSIX_MEMLOCK_RANGE
		1819	RETVAL = munlock (addr, len);
		1820	#else
		1821	RETVAL = EIO_ENOSYS ();
		1822	#endif
		1823	}
		1824	OUTPUT:
		1825	RETVAL
		1826
		1827	int
		1828	munlockall ()
		1829	CODE:
		1830	#if _POSIX_MEMLOCK
		1831	munlockall ();
		1832	#else
		1833	RETVAL = EIO_ENOSYS ();
		1834	#endif
		1835	OUTPUT:
		1836	RETVAL
		1837
		1838	int
		1839	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1840	CODE:
		1841	{
		1842	#if HAVE_LINUX_SPLICE
		1843	loff_t off_in_, off_out_;
		1844	RETVAL = splice (
		1845	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1846	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1847	length, flags
		1848	);
		1849	#else
		1850	RETVAL = EIO_ENOSYS ();
		1851	#endif
		1852	}
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	int
		1857	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1858	CODE:
		1859	#if HAVE_LINUX_SPLICE
		1860	RETVAL = tee (rfh, wfh, length, flags);
		1861	#else
		1862	RETVAL = EIO_ENOSYS ();
		1863	#endif
		1864	OUTPUT:
		1865	RETVAL
		1866
1153	void _on_next_submit (SV *cb)	1867	void _on_next_submit (SV *cb)
1154	CODE:	1868	CODE:
1155	SvREFCNT_dec (on_next_submit);	1869	SvREFCNT_dec (on_next_submit);
1156	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	1870	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1157		1871
1158	PROTOTYPES: DISABLE	1872	PROTOTYPES: DISABLE
1159		1873
		1874	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1875
		1876	BOOT:
		1877	{
		1878	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1879	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1880	}
		1881
		1882	void
		1883	DESTROY (SV *self)
		1884	CODE:
		1885	{
		1886	aio_wd wd = SvAIO_WD (self);
		1887	#if HAVE_AT
		1888	{
		1889	SV *callback = &PL_sv_undef;
		1890	dREQ; /* clobbers next_pri :/ */
		1891	next_pri = req->pri; /* restore next_pri */
		1892	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1893	req->type = EIO_WD_CLOSE;
		1894	req->wd = wd;
		1895	REQ_SEND;
		1896	}
		1897	#else
		1898	eio_wd_close_sync (wd);
		1899	#endif
		1900	}
		1901
1160	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1902	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1161		1903
1162	void	1904	void
1163	cancel (aio_req_ornot req)	1905	cancel (aio_req_ornot req)
1164	CODE:	1906	CODE:

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