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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.168 by root, Wed Aug 4 14:02:58 2010 UTC vs.
Revision 1.209 by root, Sun Apr 1 17:46:02 2012 UTC

…		…
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/types.h>	14	#include <sys/types.h>
15	#include <sys/stat.h>	15	#include <sys/stat.h>
16	#include <sys/statvfs.h>
17	#include <limits.h>	16	#include <limits.h>
18	#include <fcntl.h>	17	#include <fcntl.h>
19	#include <sched.h>	18	#include <sched.h>
20		19
21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
22	# include <sys/mman.h>	21	# include <sys/mman.h>
23	#endif	22	#endif
24		23
25	/* perl namespace pollution */	24	/* perl namespace pollution */
26	#undef VERSION	25	#undef VERSION
27
28	#ifdef _WIN32
29
30	# define EIO_STRUCT_DIRENT Direntry_t
31	# undef malloc
32	# undef free
33
34	// perl overrides all those nice win32 functions
35	# undef open
36	# undef read
37	# undef write
38	# undef send
39	# undef recv
40	# undef stat
41	# undef fstat
42	# define lstat stat
43	# undef truncate
44	# undef ftruncate
45	# undef open
46	# undef close
47	# undef unlink
48	# undef rmdir
49	# undef rename
50	# undef lseek
51
52	# define chown(a,b,c) (errno = ENOSYS, -1)
53	# define fchown(a,b,c) (errno = ENOSYS, -1)
54	# define fchmod(a,b) (errno = ENOSYS, -1)
55	# define symlink(a,b) (errno = ENOSYS, -1)
56	# define readlink(a,b,c) (errno = ENOSYS, -1)
57	# define mknod(a,b,c) (errno = ENOSYS, -1)
58	# define truncate(a,b) (errno = ENOSYS, -1)
59	# define ftruncate(fd,o) chsize ((fd), (o))
60	# define fsync(fd) _commit (fd)
61	# define opendir(fd) (errno = ENOSYS, 0)
62	# define readdir(fd) (errno = ENOSYS, -1)
63	# define closedir(fd) (errno = ENOSYS, -1)
64	# define mkdir(a,b) mkdir (a)
65
66	#else
67
68	# include <sys/time.h>
69	# include <sys/select.h>
70	# include <unistd.h>
71	# include <utime.h>
72	# include <signal.h>
73	# define EIO_STRUCT_DIRENT struct dirent
74
75	#endif
76		26
77	/* perl stupidly overrides readdir and maybe others */	27	/* perl stupidly overrides readdir and maybe others */
78	/* with thread-unsafe versions, imagine that :( */	28	/* with thread-unsafe versions, imagine that :( */
79	#undef readdir	29	#undef readdir
80	#undef opendir	30	#undef opendir
81	#undef closedir	31	#undef closedir
82		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
		72	#include <sys/time.h>
		73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
83	#define EIO_STRUCT_STAT Stat_t	78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
84		81
85	/* use NV for 32 bit perls as it allows larger offsets */	82	/* use NV for 32 bit perls as it allows larger offsets */
86	#if IVSIZE >= 8	83	#if IVSIZE >= 8
87	# define VAL64 IV	84	# define VAL64 IV
88	# define SvVAL64 SvIV	85	# define SvVAL64 SvIV
…		…
108		105
109	typedef SV SV8; /* byte-sv, used for argument-checking */	106	typedef SV SV8; /* byte-sv, used for argument-checking */
110	typedef int aio_rfd; /* read file desriptor */	107	typedef int aio_rfd; /* read file desriptor */
111	typedef int aio_wfd; /* write file descriptor */	108	typedef int aio_wfd; /* write file descriptor */
112		109
113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;	110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
114		111
115	#define EIO_REQ_MEMBERS \	112	#define EIO_REQ_MEMBERS \
116	SV *callback; \	113	SV *callback; \
117	SV *sv1, *sv2; \	114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
118	STRLEN stroffset; \	116	STRLEN stroffset; \
119	SV *self;	117	SV *self;
120		118
121	#define EIO_NO_WRAPPERS 1	119	#define EIO_NO_WRAPPERS 1
122		120
		121	#include "libeio/config.h"
123	#include "libeio/eio.h"	122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
124		176
125	#ifndef POSIX_FADV_NORMAL	177	#ifndef POSIX_FADV_NORMAL
126	# define POSIX_FADV_NORMAL 0	178	# define POSIX_FADV_NORMAL 0
127	# define NO_FADVISE 1
128	#endif	179	#endif
129	#ifndef POSIX_FADV_SEQUENTIAL	180	#ifndef POSIX_FADV_SEQUENTIAL
130	# define POSIX_FADV_SEQUENTIAL 0	181	# define POSIX_FADV_SEQUENTIAL 0
131	#endif	182	#endif
132	#ifndef POSIX_FADV_RANDOM	183	#ifndef POSIX_FADV_RANDOM
…		…
140	#endif	191	#endif
141	#ifndef POSIX_FADV_DONTNEED	192	#ifndef POSIX_FADV_DONTNEED
142	# define POSIX_FADV_DONTNEED 0	193	# define POSIX_FADV_DONTNEED 0
143	#endif	194	#endif
144		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
145	#ifndef ST_NODEV	239	#ifndef ST_NODEV
146	# define ST_NODEV 0	240	# define ST_NODEV 0
147	#endif	241	#endif
148	#ifndef ST_NOEXEC	242	#ifndef ST_NOEXEC
149	# define ST_NOEXEC 0	243	# define ST_NOEXEC 0
…		…
171	#endif	265	#endif
172	#ifndef ST_RELATIME	266	#ifndef ST_RELATIME
173	# define ST_RELATIME 0	267	# define ST_RELATIME 0
174	#endif	268	#endif
175		269
176	#ifndef MCL_CURRENT	270	#ifndef S_IFIFO
177	# define MCL_CURRENT 0	271	# define S_IFIFO 0
178	#endif	272	#endif
179	#ifndef MCL_FUTURE	273	#ifndef S_IFCHR
180	# define MCL_FUTURE 0	274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
181	#endif	293	#endif
182		294
183	#ifndef MAP_ANONYMOUS	295	#ifndef MAP_ANONYMOUS
184	# ifdef MAP_ANON	296	# ifdef MAP_ANON
185	# define MAP_ANONYMOUS MAP_ANON	297	# define MAP_ANONYMOUS MAP_ANON
…		…
201	#endif	313	#endif
202	#ifndef MAP_NONBLOCK	314	#ifndef MAP_NONBLOCK
203	# define MAP_NONBLOCK 0	315	# define MAP_NONBLOCK 0
204	#endif	316	#endif
205		317
		318	#ifndef makedev
		319	# define makedev(maj,min) (((maj) << 8) | (min))
		320	#endif
		321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
		327
206	#ifndef PAGESIZE	328	#ifndef PAGESIZE
207	# define PAGESIZE sysconf (_SC_PAGESIZE)	329	# define PAGESIZE sysconf (_SC_PAGESIZE)
208	#endif	330	#endif
209
210	static int req_invoke (eio_req *req);
211	#define EIO_FINISH(req) req_invoke (req)
212	static void req_destroy (eio_req *grp);
213	#define EIO_DESTROY(req) req_destroy (req)
214		331
215	enum {	332	enum {
216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
217	};	334	};
218		335
219	#include "libeio/eio.c"
220
221	typedef eio_req *aio_req;	336	typedef eio_req *aio_req;
222	typedef eio_req *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
223		339
224	static SV *on_next_submit;	340	static SV *on_next_submit;
225	static int next_pri = EIO_PRI_DEFAULT;	341	static int next_pri = EIO_PRI_DEFAULT;
226	static int max_outstanding;	342	static int max_outstanding;
227		343
228	static s_epipe respipe;	344	static s_epipe respipe;
229		345
230	static void req_destroy (aio_req req);	346	static void req_destroy (aio_req req);
231	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
232		348
233	static void want_poll (void)	349	static void
		350	want_poll (void)
234	{	351	{
235	/* write a dummy byte to the pipe so fh becomes ready */	352	/* write a dummy byte to the pipe so fh becomes ready */
236	s_epipe_signal (&respipe);	353	s_epipe_signal (&respipe);
237	}	354	}
238		355
239	static void done_poll (void)	356	static void
		357	done_poll (void)
240	{	358	{
241	/* read any signals sent by the worker threads */	359	/* read any signals sent by the worker threads */
242	s_epipe_drain (&respipe);	360	s_epipe_drain (&respipe);
243	}	361	}
244		362
245	/* must be called at most once */	363	/* must be called at most once */
		364	static SV *
246	static SV *req_sv (aio_req req, HV *stash)	365	req_sv (aio_req req, HV *stash)
247	{	366	{
248	if (!req->self)	367	if (!req->self)
249	{	368	{
250	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
252	}	371	}
253		372
254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
255	}	374	}
256		375
257	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
258	{	384	{
259	MAGIC *mg;	385	MAGIC *mg;
260		386
261	if (!SvROK (sv)	387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash	389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
263	&& SvSTASH (SvRV (sv)) != aio_req_stash	390	&& SvSTASH (SvRV (sv)) != aio_req_stash
264	&& !sv_derived_from (sv, "IO::AIO::REQ")))	391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
265	croak ("object of class IO::AIO::REQ expected");	392	croak ("object of class IO::AIO::REQ expected");
266		393
267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
268		395
269	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
270	}	397	}
271		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
272	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
273	{	412	{
274	if (grp->sv2 && SvOK (grp->sv2))	413	if (grp->sv2 && SvOK (grp->sv2))
275	{	414	{
276	dSP;	415	dSP;
277		416
…		…
285	FREETMPS;	424	FREETMPS;
286	LEAVE;	425	LEAVE;
287	}	426	}
288	}	427	}
289		428
		429	static void
290	static void req_submit (eio_req *req)	430	req_submit (eio_req *req)
291	{	431	{
292	eio_submit (req);	432	eio_submit (req);
293		433
294	if (expect_false (on_next_submit))	434	if (expect_false (on_next_submit))
295	{	435	{
…		…
302	PUTBACK;	442	PUTBACK;
303	call_sv (cb, G_DISCARD | G_EVAL);	443	call_sv (cb, G_DISCARD | G_EVAL);
304	}	444	}
305	}	445	}
306		446
		447	static int
307	static int req_invoke (eio_req *req)	448	req_invoke (eio_req *req)
308	{	449	{
309	if (req->flags & FLAG_SV2_RO_OFF)	450	if (req->flags & FLAG_SV2_RO_OFF)
310	SvREADONLY_off (req->sv2);	451	SvREADONLY_off (req->sv2);
311		452
312	if (!EIO_CANCELLED (req) && req->callback)	453	if (!EIO_CANCELLED (req) && req->callback)
…		…
323	/* do not recreate the result IV from scratch each time */	464	/* do not recreate the result IV from scratch each time */
324	if (expect_true (sv_result_cache))	465	if (expect_true (sv_result_cache))
325	{	466	{
326	sv_result = sv_result_cache; sv_result_cache = 0;	467	sv_result = sv_result_cache; sv_result_cache = 0;
327	SvIV_set (sv_result, req->result);	468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
328	}	470	}
329	else	471	else
330	{	472	{
331	sv_result = newSViv (req->result);	473	sv_result = newSViv (req->result);
332	SvREADONLY_on (sv_result);	474	SvREADONLY_on (sv_result);
333	}	475	}
334		476
335	switch (req->type)	477	switch (req->type)
336	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
337	case EIO_READDIR:	483	case EIO_READDIR:
338	{	484	{
339	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
340		486
341	if (req->result >= 0)	487	if (req->result >= 0)
…		…
429	case EIO_STATVFS:	575	case EIO_STATVFS:
430	case EIO_FSTATVFS:	576	case EIO_FSTATVFS:
431	{	577	{
432	SV *rv = &PL_sv_undef;	578	SV *rv = &PL_sv_undef;
433		579
		580	#ifndef _WIN32
434	if (req->result >= 0)	581	if (req->result >= 0)
435	{	582	{
436	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);	583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
437	HV *hv = newHV ();	584	HV *hv = newHV ();
438		585
…		…
448	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);	595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
449	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);	596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
450	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);	597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
451	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);	598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
452	}	599	}
		600	#endif
453		601
454	PUSHs (rv);	602	PUSHs (rv);
455	}	603	}
456		604
457	break;	605	break;
…		…
473	case EIO_NOP:	621	case EIO_NOP:
474	case EIO_BUSY:	622	case EIO_BUSY:
475	break;	623	break;
476		624
477	case EIO_READLINK:	625	case EIO_READLINK:
		626	case EIO_REALPATH:
478	if (req->result > 0)	627	if (req->result > 0)
479	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));	628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	break;	629	break;
481		630
482	case EIO_STAT:	631	case EIO_STAT:
483	case EIO_LSTAT:	632	case EIO_LSTAT:
484	case EIO_FSTAT:	633	case EIO_FSTAT:
485	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;	634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
486	PL_laststatval = req->result;	636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
487	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);	638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
488	PUSHs (sv_result);	640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_SEEK:
		644	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
489	break;	645	break;
490		646
491	case EIO_READ:	647	case EIO_READ:
492	{	648	{
493	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	649	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
…		…
496	SvSETMAGIC (req->sv2);	652	SvSETMAGIC (req->sv2);
497	PUSHs (sv_result);	653	PUSHs (sv_result);
498	}	654	}
499	break;	655	break;
500		656
501	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */	657	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502	if (req->result > 0)	658	if (req->result > 0)
503	SvIV_set (sv_result, 0);	659	SvIV_set (sv_result, 0);
504	/* FALLTHROUGH */	660	/* FALLTHROUGH */
505		661
506	default:	662	default:
…		…
526	}	682	}
527		683
528	return !!SvTRUE (ERRSV);	684	return !!SvTRUE (ERRSV);
529	}	685	}
530		686
		687	static void
531	static void req_destroy (aio_req req)	688	req_destroy (aio_req req)
532	{	689	{
533	if (req->self)	690	if (req->self)
534	{	691	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
537	}	694	}
538		695
539	SvREFCNT_dec (req->sv1);	696	SvREFCNT_dec (req->sv1);
540	SvREFCNT_dec (req->sv2);	697	SvREFCNT_dec (req->sv2);
		698	SvREFCNT_dec (req->sv3);
		699	SvREFCNT_dec (req->sv4);
541	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
542		701
543	Safefree (req);	702	free (req);
544	}	703	}
545		704
		705	static void
546	static void req_cancel_subs (aio_req grp)	706	req_cancel_subs (aio_req grp)
547	{	707	{
548	aio_req sub;
549
550	if (grp->type != EIO_GROUP)	708	if (grp->type != EIO_GROUP)
551	return;	709	return;
552		710
553	SvREFCNT_dec (grp->sv2);	711	SvREFCNT_dec (grp->sv2);
554	grp->sv2 = 0;	712	grp->sv2 = 0;
555		713
556	eio_grp_cancel (grp);	714	eio_grp_cancel (grp);
557	}	715	}
558		716
559	static void	717	static void ecb_cold
560	create_respipe (void)	718	create_respipe (void)
561	{	719	{
562	if (s_epipe_renew (&respipe))	720	if (s_epipe_renew (&respipe))
563	croak ("IO::AIO: unable to initialize result pipe");	721	croak ("IO::AIO: unable to initialize result pipe");
564	}	722	}
565		723
566	static void poll_wait (void)	724	static void
		725	poll_wait (void)
567	{	726	{
568	while (eio_nreqs ())	727	while (eio_nreqs ())
569	{	728	{
570	int size;	729	int size;
571		730
…		…
580		739
581	s_epipe_wait (&respipe);	740	s_epipe_wait (&respipe);
582	}	741	}
583	}	742	}
584		743
585	static int poll_cb (void)	744	static int
		745	poll_cb (void)
586	{	746	{
587	for (;;)	747	for (;;)
588	{	748	{
589	int res = eio_poll ();	749	int res = eio_poll ();
590		750
…		…
596		756
597	poll_wait ();	757	poll_wait ();
598	}	758	}
599	}	759	}
600		760
601	static void atfork_child (void)	761	static void ecb_cold
		762	reinit (void)
602	{	763	{
603	create_respipe ();	764	create_respipe ();
		765
		766	if (eio_init (want_poll, done_poll) < 0)
		767	croak ("IO::AIO: unable to initialise eio library");
604	}	768	}
605		769
606	/*****************************************************************************/	770	/*****************************************************************************/
607		771
608	#if !_POSIX_MAPPED_FILES	772	#if !_POSIX_MAPPED_FILES
609	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)	773	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
610	# define munmap(addr,length) (errno = ENOSYS, -1)	774	# define munmap(addr,length) (errno = ENOSYS, -1)
611	#endif	775	#endif
612		776
		777	#if !_POSIX_MEMORY_PROTECTION
		778	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		779	# define PROT_NONE 0
		780	# define PROT_WRITE 0
		781	# define MAP_PRIVATE 0
		782	# define MAP_SHARED 0
		783	# define MAP_FIXED 0
		784	#endif
		785
613	#define MMAP_MAGIC PERL_MAGIC_ext	786	#define MMAP_MAGIC PERL_MAGIC_ext
614		787
615	static int	788	static int ecb_cold
616	mmap_free (pTHX_ SV *sv, MAGIC *mg)	789	mmap_free (pTHX_ SV *sv, MAGIC *mg)
617	{	790	{
618	int old_errno = errno;	791	int old_errno = errno;
619	munmap (mg->mg_ptr, (size_t)mg->mg_obj);	792	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
620	errno = old_errno;	793	errno = old_errno;
…		…
644	{	817	{
645	SvGETMAGIC (cb_sv);	818	SvGETMAGIC (cb_sv);
646	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;	819	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
647	}	820	}
648		821
		822	static aio_req ecb_noinline
		823	dreq (SV *callback)
		824	{
		825	SV *cb_cv;
		826	aio_req req;
		827	int req_pri = next_pri;
		828	next_pri = EIO_PRI_DEFAULT;
		829
		830	cb_cv = get_cb (callback);
		831
		832	req = calloc (sizeof (*req), 1);
		833	if (!req)
		834	croak ("out of memory during eio_req allocation");
		835
		836	req->callback = SvREFCNT_inc (cb_cv);
		837	req->pri = req_pri;
		838
		839	return req;
		840	}
		841
649	#define dREQ \	842	#define dREQ \
650	SV *cb_cv; \	843	aio_req req = dreq (callback); \
651	aio_req req; \
652	int req_pri = next_pri; \
653	next_pri = EIO_PRI_DEFAULT; \
654	\
655	cb_cv = get_cb (callback); \
656	\
657	Newz (0, req, 1, eio_req); \
658	if (!req) \
659	croak ("out of memory during eio_req allocation"); \
660	\
661	req->callback = SvREFCNT_inc (cb_cv); \
662	req->pri = req_pri
663		844
664	#define REQ_SEND \	845	#define REQ_SEND \
665	PUTBACK; \	846	PUTBACK; \
666	req_submit (req); \	847	req_submit (req); \
667	SPAGAIN; \	848	SPAGAIN; \
668	\	849	\
669	if (GIMME_V != G_VOID) \	850	if (GIMME_V != G_VOID) \
670	XPUSHs (req_sv (req, aio_req_stash));	851	XPUSHs (req_sv (req, aio_req_stash));
		852
		853	ecb_inline void
		854	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		855	{
		856	if (expect_false (SvROK (path)))
		857	{
		858	SV *rv = SvRV (path);
		859	SV *wdob;
		860
		861	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		862	{
		863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
		865
		866	if (SvOK (wdob))
		867	{
		868	*wd = SvAIO_WD (wdob);
		869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		870	}
		871	else
		872	*wd = EIO_INVALID_WD;
		873	}
		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		875	{
		876	*wd = (aio_wd)(long)SvIVX (rv);
		877	*wdsv = SvREFCNT_inc_NN (rv);
		878	*ptr = ".";
		879	return; /* path set to "." */
		880	}
		881	else
		882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		883	}
		884
		885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
		887	}
		888
		889	static void ecb_noinline
		890	req_set_path1 (aio_req req, SV *path)
		891	{
		892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		893	}
		894
		895	static void ecb_noinline
		896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		897	{
		898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		899
		900	switch (SvTYPE (rv))
		901	{
		902	case SVt_PVIO:
		903	case SVt_PVLV:
		904	case SVt_PVGV:
		905	req->type = type_fh;
		906	req->sv1 = newSVsv (fh_or_path);
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	break;
		909
		910	default:
		911	req->type = type_path;
		912	req_set_path1 (req, fh_or_path);
		913	break;
		914	}
		915	}
		916
		917	XS(boot_IO__AIO) ecb_cold;
671		918
672	MODULE = IO::AIO PACKAGE = IO::AIO	919	MODULE = IO::AIO PACKAGE = IO::AIO
673		920
674	PROTOTYPES: ENABLE	921	PROTOTYPES: ENABLE
675		922
…		…
689	const_iv (O_RDWR)	936	const_iv (O_RDWR)
690	const_iv (O_CREAT)	937	const_iv (O_CREAT)
691	const_iv (O_TRUNC)	938	const_iv (O_TRUNC)
692	const_iv (O_EXCL)	939	const_iv (O_EXCL)
693	const_iv (O_APPEND)	940	const_iv (O_APPEND)
694	#ifndef _WIN32	941
		942	const_iv (O_ASYNC)
		943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
		945
		946	const_iv (O_CLOEXEC)
		947	const_iv (O_NOCTTY)
		948	const_iv (O_NOFOLLOW)
		949	const_iv (O_NONBLOCK)
		950	const_iv (O_EXEC)
		951	const_iv (O_SEARCH)
		952	const_iv (O_DIRECTORY)
		953	const_iv (O_DSYNC)
		954	const_iv (O_RSYNC)
		955	const_iv (O_SYNC)
		956	const_iv (O_TTY_INIT)
		957
695	const_iv (S_IFIFO)	958	const_iv (S_IFIFO)
696	#endif	959	const_iv (S_IFCHR)
		960	const_iv (S_IFBLK)
		961	const_iv (S_IFLNK)
		962	const_iv (S_IFREG)
		963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
		967
697	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)	968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
698	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)	969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
699	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)	970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
700	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)	971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
701	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)	972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
702	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)	973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		974
		975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		976	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		977	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		978	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		979	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
703		980
704	const_iv (ST_RDONLY)	981	const_iv (ST_RDONLY)
705	const_iv (ST_NOSUID)	982	const_iv (ST_NOSUID)
706	const_iv (ST_NODEV)	983	const_iv (ST_NODEV)
707	const_iv (ST_NOEXEC)	984	const_iv (ST_NOEXEC)
…		…
712	const_iv (ST_IMMUTABLE)	989	const_iv (ST_IMMUTABLE)
713	const_iv (ST_NOATIME)	990	const_iv (ST_NOATIME)
714	const_iv (ST_NODIRATIME)	991	const_iv (ST_NODIRATIME)
715	const_iv (ST_RELATIME)	992	const_iv (ST_RELATIME)
716		993
		994	const_iv (PROT_NONE)
717	const_iv (PROT_EXEC)	995	const_iv (PROT_EXEC)
718	const_iv (PROT_NONE)
719	const_iv (PROT_READ)	996	const_iv (PROT_READ)
720	const_iv (PROT_WRITE)	997	const_iv (PROT_WRITE)
721		998
722	/*const_iv (MAP_FIXED)*/	999	/*const_iv (MAP_FIXED)*/
723	const_iv (MAP_PRIVATE)	1000	const_iv (MAP_PRIVATE)
…		…
729	const_iv (MAP_LOCKED)	1006	const_iv (MAP_LOCKED)
730	const_iv (MAP_NORESERVE)	1007	const_iv (MAP_NORESERVE)
731	const_iv (MAP_POPULATE)	1008	const_iv (MAP_POPULATE)
732	const_iv (MAP_NONBLOCK)	1009	const_iv (MAP_NONBLOCK)
733		1010
		1011	const_eio (SEEK_SET)
		1012	const_eio (SEEK_CUR)
		1013	const_eio (SEEK_END)
		1014
734	const_iv (MCL_FUTURE)	1015	const_eio (MCL_FUTURE)
735	const_iv (MCL_CURRENT)	1016	const_eio (MCL_CURRENT)
736		1017
737	const_eio (MS_ASYNC)	1018	const_eio (MS_ASYNC)
738	const_eio (MS_INVALIDATE)	1019	const_eio (MS_INVALIDATE)
739	const_eio (MS_SYNC)	1020	const_eio (MS_SYNC)
740		1021
741	const_eio (MT_MODIFY)	1022	const_eio (MT_MODIFY)
742		1023
743	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)	1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
744	const_eio (SYNC_FILE_RANGE_WRITE)	1025	const_eio (SYNC_FILE_RANGE_WRITE)
745	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)	1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1027
		1028	const_eio (FALLOC_FL_KEEP_SIZE)
746		1029
747	const_eio (READDIR_DENTS)	1030	const_eio (READDIR_DENTS)
748	const_eio (READDIR_DIRS_FIRST)	1031	const_eio (READDIR_DIRS_FIRST)
749	const_eio (READDIR_STAT_ORDER)	1032	const_eio (READDIR_STAT_ORDER)
750	const_eio (READDIR_FOUND_UNKNOWN)	1033	const_eio (READDIR_FOUND_UNKNOWN)
…		…
761	};	1044	};
762		1045
763	aio_stash = gv_stashpv ("IO::AIO" , 1);	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
764	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);	1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
765	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);	1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
766		1050
767	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
768	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
769		1053
770	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
771		1055
772	create_respipe ();	1056	reinit ();
773
774	if (eio_init (want_poll, done_poll) < 0)
775	croak ("IO::AIO: unable to initialise eio library");
776
777	/* atfork child called in fifo order, so before eio's handler */
778	X_THREAD_ATFORK (0, 0, atfork_child);
779	}	1057	}
780		1058
781	void	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
782	max_poll_reqs (int nreqs)	1064	max_poll_reqs (unsigned int nreqs)
783	PROTOTYPE: $	1065	PROTOTYPE: $
784	CODE:	1066	CODE:
785	eio_set_max_poll_reqs (nreqs);	1067	eio_set_max_poll_reqs (nreqs);
786		1068
787	void	1069	void
…		…
789	PROTOTYPE: $	1071	PROTOTYPE: $
790	CODE:	1072	CODE:
791	eio_set_max_poll_time (nseconds);	1073	eio_set_max_poll_time (nseconds);
792		1074
793	void	1075	void
794	min_parallel (int nthreads)	1076	min_parallel (unsigned int nthreads)
795	PROTOTYPE: $	1077	PROTOTYPE: $
796	CODE:	1078	CODE:
797	eio_set_min_parallel (nthreads);	1079	eio_set_min_parallel (nthreads);
798		1080
799	void	1081	void
800	max_parallel (int nthreads)	1082	max_parallel (unsigned int nthreads)
801	PROTOTYPE: $	1083	PROTOTYPE: $
802	CODE:	1084	CODE:
803	eio_set_max_parallel (nthreads);	1085	eio_set_max_parallel (nthreads);
804		1086
805	void	1087	void
806	max_idle (int nthreads)	1088	max_idle (unsigned int nthreads)
807	PROTOTYPE: $	1089	PROTOTYPE: $
808	CODE:	1090	CODE:
809	eio_set_max_idle (nthreads);	1091	eio_set_max_idle (nthreads);
810		1092
811	void	1093	void
		1094	idle_timeout (unsigned int seconds)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_idle_timeout (seconds);
		1098
		1099	void
812	max_outstanding (int maxreqs)	1100	max_outstanding (unsigned int maxreqs)
813	PROTOTYPE: $	1101	PROTOTYPE: $
814	CODE:	1102	CODE:
815	max_outstanding = maxreqs;	1103	max_outstanding = maxreqs;
816		1104
817	void	1105	void
		1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1107	PPCODE:
		1108	{
		1109	dREQ;
		1110
		1111	req->type = EIO_WD_OPEN;
		1112	req_set_path1 (req, pathname);
		1113
		1114	REQ_SEND;
		1115	}
		1116
		1117	void
818	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1118	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
819	PROTOTYPE: $$$;$
820	PPCODE:	1119	PPCODE:
821	{	1120	{
822	dREQ;	1121	dREQ;
823		1122
824	req->type = EIO_OPEN;	1123	req->type = EIO_OPEN;
825	req->sv1 = newSVsv (pathname);	1124	req_set_path1 (req, pathname);
826	req->ptr1 = SvPVbyte_nolen (req->sv1);
827	req->int1 = flags;	1125	req->int1 = flags;
828	req->int2 = mode;	1126	req->int2 = mode;
829		1127
830	REQ_SEND;	1128	REQ_SEND;
831	}	1129	}
832		1130
833	void	1131	void
834	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
835	PROTOTYPE: $;$
836	ALIAS:	1133	ALIAS:
837	aio_fsync = EIO_FSYNC	1134	aio_fsync = EIO_FSYNC
838	aio_fdatasync = EIO_FDATASYNC	1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
839	PPCODE:	1137	PPCODE:
840	{	1138	{
841	int fd = s_fileno_croak (fh, 0);	1139	int fd = s_fileno_croak (fh, 0);
842	dREQ;	1140	dREQ;
843		1141
844	req->type = ix;	1142	req->type = ix;
845	req->sv1 = newSVsv (fh);	1143	req->sv1 = newSVsv (fh);
846	req->int1 = fd;	1144	req->int1 = fd;
847		1145
848	REQ_SEND (req);	1146	REQ_SEND;
849	}	1147	}
850		1148
851	void	1149	void
852	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)	1150	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
853	PROTOTYPE: $$$$;$
854	PPCODE:	1151	PPCODE:
855	{	1152	{
856	int fd = s_fileno_croak (fh, 0);	1153	int fd = s_fileno_croak (fh, 0);
857	dREQ;	1154	dREQ;
858		1155
…		…
861	req->int1 = fd;	1158	req->int1 = fd;
862	req->offs = offset;	1159	req->offs = offset;
863	req->size = nbytes;	1160	req->size = nbytes;
864	req->int2 = flags;	1161	req->int2 = flags;
865		1162
866	REQ_SEND (req);	1163	REQ_SEND;
867	}	1164	}
868		1165
869	void	1166	void
870	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1167	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
871	PROTOTYPE: $;$
872	PPCODE:	1168	PPCODE:
873	{	1169	{
874	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
875	int fd = s_fileno_croak (fh, 0);	1170	int fd = s_fileno_croak (fh, 0);
876	dREQ;	1171	dREQ;
877		1172
878	if (close_pipe < 0)	1173	req->type = EIO_FALLOCATE;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->int2 = mode;
		1177	req->offs = offset;
		1178	req->size = len;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
		1184	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1185	PPCODE:
		1186	{
		1187	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1188	int fd = s_fileno_croak (fh, 0);
		1189	dREQ;
		1190
		1191	if (expect_false (close_fd < 0))
879	{	1192	{
880	int pipefd [2];	1193	int pipefd [2];
881		1194
		1195	if (
		1196	#ifdef _WIN32
		1197	_pipe (pipefd, 1, _O_BINARY) < 0
		1198	#else
882	if (pipe (pipefd) < 0	1199	pipe (pipefd) < 0
883	|| close (pipefd [1]) < 0
884	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)	1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1201	#endif
		1202	|| close (pipefd [1]) < 0
		1203	)
885	abort (); /*D*/	1204	abort (); /*D*/
886		1205
887	close_pipe = pipefd [0];	1206	close_fd = pipefd [0];
888	}	1207	}
889		1208
890	req->type = EIO_DUP2;	1209	req->type = EIO_DUP2;
891	req->int1 = close_pipe;	1210	req->int1 = close_fd;
892	req->sv2 = newSVsv (fh);	1211	req->sv2 = newSVsv (fh);
893	req->int2 = fd;	1212	req->int2 = fd;
894		1213
895	REQ_SEND (req);	1214	REQ_SEND;
		1215	}
		1216
		1217	void
		1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1219	PPCODE:
		1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
		1223	dREQ;
		1224
		1225	req->type = EIO_SEEK;
		1226	req->sv1 = newSVsv (fh);
		1227	req->int1 = fd;
		1228	req->offs = SvVAL64 (offset);
		1229	req->int2 = whence;
		1230
		1231	REQ_SEND;
896	}	1232	}
897		1233
898	void	1234	void
899	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
900	ALIAS:	1236	ALIAS:
901	aio_read = EIO_READ	1237	aio_read = EIO_READ
902	aio_write = EIO_WRITE	1238	aio_write = EIO_WRITE
903	PROTOTYPE: $$$$$;$
904	PPCODE:	1239	PPCODE:
905	{	1240	{
906	STRLEN svlen;	1241	STRLEN svlen;
907	int fd = s_fileno_croak (fh, ix == EIO_WRITE);	1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
908	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
…		…
948	REQ_SEND;	1283	REQ_SEND;
949	}	1284	}
950	}	1285	}
951		1286
952	void	1287	void
953	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
954	PROTOTYPE: $$;$	1289	ALIAS:
		1290	aio_readlink = EIO_READLINK
		1291	aio_realpath = EIO_REALPATH
955	PPCODE:	1292	PPCODE:
956	{	1293	{
957	SV *data;
958	dREQ;	1294	dREQ;
959		1295
960	req->type = EIO_READLINK;	1296	req->type = ix;
961	req->sv1 = newSVsv (path);	1297	req_set_path1 (req, pathname);
962	req->ptr1 = SvPVbyte_nolen (req->sv1);
963		1298
964	REQ_SEND;	1299	REQ_SEND;
965	}	1300	}
966		1301
967	void	1302	void
968	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)	1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
969	PROTOTYPE: $$$$;$
970	PPCODE:	1304	PPCODE:
971	{	1305	{
972	int ifd = s_fileno_croak (in_fh , 0);	1306	int ifd = s_fileno_croak (in_fh , 0);
973	int ofd = s_fileno_croak (out_fh, 1);	1307	int ofd = s_fileno_croak (out_fh, 1);
974	dREQ;	1308	dREQ;
…		…
984	REQ_SEND;	1318	REQ_SEND;
985	}	1319	}
986		1320
987	void	1321	void
988	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
989	PROTOTYPE: $$$;$
990	PPCODE:	1323	PPCODE:
991	{	1324	{
992	int fd = s_fileno_croak (fh, 0);	1325	int fd = s_fileno_croak (fh, 0);
993	dREQ;	1326	dREQ;
994		1327
…		…
1009	aio_statvfs = EIO_STATVFS	1342	aio_statvfs = EIO_STATVFS
1010	PPCODE:	1343	PPCODE:
1011	{	1344	{
1012	dREQ;	1345	dREQ;
1013		1346
1014	req->sv1 = newSVsv (fh_or_path);	1347	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1015
1016	if (SvPOK (req->sv1))
1017	{
1018	req->type = ix;
1019	req->ptr1 = SvPVbyte_nolen (req->sv1);
1020	}
1021	else
1022	{
1023	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1024	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1025	}
1026		1348
1027	REQ_SEND;	1349	REQ_SEND;
1028	}	1350	}
		1351
		1352	UV
		1353	major (UV dev)
		1354	ALIAS:
		1355	minor = 1
		1356	CODE:
		1357	RETVAL = ix ? major (dev) : minor (dev);
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	UV
		1362	makedev (UV maj, UV min)
		1363	CODE:
		1364	RETVAL = makedev (maj, min);
		1365	OUTPUT:
		1366	RETVAL
1029		1367
1030	void	1368	void
1031	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1369	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1032	PPCODE:	1370	PPCODE:
1033	{	1371	{
1034	dREQ;	1372	dREQ;
1035		1373
1036	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1374	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1037	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1375	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1038	req->sv1 = newSVsv (fh_or_path);	1376	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1039
1040	if (SvPOK (req->sv1))
1041	{
1042	req->type = EIO_UTIME;
1043	req->ptr1 = SvPVbyte_nolen (req->sv1);
1044	}
1045	else
1046	{
1047	req->type = EIO_FUTIME;
1048	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1049	}
1050		1377
1051	REQ_SEND;	1378	REQ_SEND;
1052	}	1379	}
1053		1380
1054	void	1381	void
1055	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1382	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1056	PPCODE:	1383	PPCODE:
1057	{	1384	{
1058	dREQ;	1385	dREQ;
1059		1386
1060	req->sv1 = newSVsv (fh_or_path);
1061	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1387	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1062		1388	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1063	if (SvPOK (req->sv1))
1064	{
1065	req->type = EIO_TRUNCATE;
1066	req->ptr1 = SvPVbyte_nolen (req->sv1);
1067	}
1068	else
1069	{
1070	req->type = EIO_FTRUNCATE;
1071	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1072	}
1073		1389
1074	REQ_SEND;	1390	REQ_SEND;
1075	}	1391	}
1076		1392
1077	void	1393	void
1078	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1394	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1079	ALIAS:
1080	aio_chmod = EIO_CHMOD
1081	aio_mkdir = EIO_MKDIR
1082	PPCODE:	1395	PPCODE:
1083	{	1396	{
1084	dREQ;	1397	dREQ;
1085		1398
1086	req->int2 = mode;	1399	req->int2 = mode;
1087	req->sv1 = newSVsv (fh_or_path);	1400	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1088
1089	if (SvPOK (req->sv1))
1090	{
1091	req->type = ix;
1092	req->ptr1 = SvPVbyte_nolen (req->sv1);
1093	}
1094	else
1095	{
1096	req->type = EIO_FCHMOD;
1097	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1098	}
1099		1401
1100	REQ_SEND;	1402	REQ_SEND;
1101	}	1403	}
1102		1404
1103	void	1405	void
…		…
1106	{	1408	{
1107	dREQ;	1409	dREQ;
1108		1410
1109	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1411	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1110	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1412	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1111	req->sv1 = newSVsv (fh_or_path);	1413	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1112
1113	if (SvPOK (req->sv1))
1114	{
1115	req->type = EIO_CHOWN;
1116	req->ptr1 = SvPVbyte_nolen (req->sv1);
1117	}
1118	else
1119	{
1120	req->type = EIO_FCHOWN;
1121	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1122	}
1123		1414
1124	REQ_SEND;	1415	REQ_SEND;
1125	}	1416	}
1126		1417
1127	void	1418	void
…		…
1129	PPCODE:	1420	PPCODE:
1130	{	1421	{
1131	dREQ;	1422	dREQ;
1132		1423
1133	req->type = EIO_READDIR;	1424	req->type = EIO_READDIR;
1134	req->sv1 = newSVsv (pathname);
1135	req->ptr1 = SvPVbyte_nolen (req->sv1);
1136	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;	1425	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1137		1426
1138	if (flags & EIO_READDIR_DENTS)	1427	if (flags & EIO_READDIR_DENTS)
1139	req->int1 |= EIO_READDIR_CUSTOM2;	1428	req->int1 |= EIO_READDIR_CUSTOM2;
1140		1429
		1430	req_set_path1 (req, pathname);
		1431
1141	REQ_SEND;	1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1437	PPCODE:
		1438	{
		1439	dREQ;
		1440
		1441	req->type = EIO_MKDIR;
		1442	req->int2 = mode;
		1443	req_set_path1 (req, pathname);
		1444
		1445	REQ_SEND;
1142	}	1446	}
1143		1447
1144	void	1448	void
1145	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1146	ALIAS:	1450	ALIAS:
…		…
1150	PPCODE:	1454	PPCODE:
1151	{	1455	{
1152	dREQ;	1456	dREQ;
1153		1457
1154	req->type = ix;	1458	req->type = ix;
1155	req->sv1 = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1156	req->ptr1 = SvPVbyte_nolen (req->sv1);
1157		1460
1158	REQ_SEND;	1461	REQ_SEND;
1159	}	1462	}
1160		1463
1161	void	1464	void
…		…
1164	aio_link = EIO_LINK	1467	aio_link = EIO_LINK
1165	aio_symlink = EIO_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1166	aio_rename = EIO_RENAME	1469	aio_rename = EIO_RENAME
1167	PPCODE:	1470	PPCODE:
1168	{	1471	{
		1472	eio_wd wd2 = 0;
1169	dREQ;	1473	dREQ;
1170		1474
1171	req->type = ix;	1475	req->type = ix;
1172	req->sv1 = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1173	req->ptr1 = SvPVbyte_nolen (req->sv1);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1174	req->sv2 = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1175	req->ptr2 = SvPVbyte_nolen (req->sv2);
1176		1479
1177	REQ_SEND;	1480	REQ_SEND;
1178	}	1481	}
1179		1482
1180	void	1483	void
…		…
1182	PPCODE:	1485	PPCODE:
1183	{	1486	{
1184	dREQ;	1487	dREQ;
1185		1488
1186	req->type = EIO_MKNOD;	1489	req->type = EIO_MKNOD;
1187	req->sv1 = newSVsv (pathname);
1188	req->ptr1 = SvPVbyte_nolen (req->sv1);
1189	req->int2 = (mode_t)mode;	1490	req->int2 = (mode_t)mode;
1190	req->offs = dev;	1491	req->offs = dev;
		1492	req_set_path1 (req, pathname);
1191		1493
1192	REQ_SEND;	1494	REQ_SEND;
1193	}	1495	}
1194		1496
1195	void	1497	void
1196	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)	1498	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1197	ALIAS:	1499	ALIAS:
1198	aio_mtouch = EIO_MTOUCH	1500	aio_mtouch = EIO_MTOUCH
1199	aio_msync = EIO_MSYNC	1501	aio_msync = EIO_MSYNC
1200	PROTOTYPE: $$$$;$
1201	PPCODE:	1502	PPCODE:
1202	{	1503	{
1203	STRLEN svlen;	1504	STRLEN svlen;
		1505	char *svptr = SvPVbyte (data, svlen);
1204	UV len = SvUV (length);	1506	UV len = SvUV (length);
1205	char *svptr = SvPVbyte (data, svlen);
1206		1507
1207	if (offset < 0)	1508	if (offset < 0)
1208	offset += svlen;	1509	offset += svlen;
1209		1510
1210	if (offset < 0 || offset > svlen)	1511	if (offset < 0 || offset > svlen)
…		…
1215		1516
1216	{	1517	{
1217	dREQ;	1518	dREQ;
1218		1519
1219	req->type = ix;	1520	req->type = ix;
1220	req->size = len;
1221	req->sv2 = SvREFCNT_inc (data);	1521	req->sv2 = SvREFCNT_inc (data);
1222	req->ptr2 = (char *)svptr + offset;	1522	req->ptr2 = (char *)svptr + offset;
		1523	req->size = len;
1223	req->int1 = flags;	1524	req->int1 = flags;
1224		1525
1225	REQ_SEND;	1526	REQ_SEND;
1226	}	1527	}
1227	}	1528	}
1228		1529
1229	void	1530	void
		1531	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1532	PPCODE:
		1533	{
		1534	STRLEN svlen;
		1535	char *svptr = SvPVbyte (data, svlen);
		1536	UV len = SvUV (length);
		1537
		1538	if (offset < 0)
		1539	offset += svlen;
		1540
		1541	if (offset < 0 || offset > svlen)
		1542	croak ("offset outside of scalar");
		1543
		1544	if (!SvOK (length) || len + offset > svlen)
		1545	len = svlen - offset;
		1546
		1547	{
		1548	dREQ;
		1549
		1550	req->type = EIO_MLOCK;
		1551	req->sv2 = SvREFCNT_inc (data);
		1552	req->ptr2 = (char *)svptr + offset;
		1553	req->size = len;
		1554
		1555	REQ_SEND;
		1556	}
		1557	}
		1558
		1559	void
		1560	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	dREQ;
		1564
		1565	req->type = EIO_MLOCKALL;
		1566	req->int1 = flags;
		1567
		1568	REQ_SEND;
		1569	}
		1570
		1571	void
1230	aio_busy (double delay, SV *callback=&PL_sv_undef)	1572	aio_busy (double delay, SV *callback=&PL_sv_undef)
1231	PPCODE:	1573	PPCODE:
1232	{	1574	{
1233	dREQ;	1575	dREQ;
1234		1576
…		…
1238	REQ_SEND;	1580	REQ_SEND;
1239	}	1581	}
1240		1582
1241	void	1583	void
1242	aio_group (SV *callback=&PL_sv_undef)	1584	aio_group (SV *callback=&PL_sv_undef)
1243	PROTOTYPE: ;$
1244	PPCODE:	1585	PPCODE:
1245	{	1586	{
1246	dREQ;	1587	dREQ;
1247		1588
1248	req->type = EIO_GROUP;	1589	req->type = EIO_GROUP;
…		…
1265	REQ_SEND;	1606	REQ_SEND;
1266	}	1607	}
1267		1608
1268	int	1609	int
1269	aioreq_pri (int pri = 0)	1610	aioreq_pri (int pri = 0)
1270	PROTOTYPE: ;$
1271	CODE:	1611	CODE:
1272	RETVAL = next_pri;	1612	RETVAL = next_pri;
1273	if (items > 0)	1613	if (items > 0)
1274	{	1614	{
1275	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;	1615	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
…		…
1287	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;	1627	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1288	next_pri = nice;	1628	next_pri = nice;
1289		1629
1290	void	1630	void
1291	flush ()	1631	flush ()
1292	PROTOTYPE:
1293	CODE:	1632	CODE:
1294	while (eio_nreqs ())	1633	while (eio_nreqs ())
1295	{	1634	{
1296	poll_wait ();	1635	poll_wait ();
1297	poll_cb ();	1636	poll_cb ();
1298	}	1637	}
1299		1638
1300	int	1639	int
1301	poll()	1640	poll ()
1302	PROTOTYPE:
1303	CODE:	1641	CODE:
1304	poll_wait ();	1642	poll_wait ();
1305	RETVAL = poll_cb ();	1643	RETVAL = poll_cb ();
1306	OUTPUT:	1644	OUTPUT:
1307	RETVAL	1645	RETVAL
1308		1646
1309	int	1647	int
1310	poll_fileno()	1648	poll_fileno ()
1311	PROTOTYPE:
1312	CODE:	1649	CODE:
1313	RETVAL = s_epipe_fd (&respipe);	1650	RETVAL = s_epipe_fd (&respipe);
1314	OUTPUT:	1651	OUTPUT:
1315	RETVAL	1652	RETVAL
1316		1653
1317	int	1654	int
1318	poll_cb(...)	1655	poll_cb (...)
1319	PROTOTYPE:	1656	PROTOTYPE:
1320	CODE:	1657	CODE:
1321	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1322	OUTPUT:	1659	OUTPUT:
1323	RETVAL	1660	RETVAL
1324		1661
1325	void	1662	void
1326	poll_wait()	1663	poll_wait ()
1327	PROTOTYPE:
1328	CODE:	1664	CODE:
1329	poll_wait ();	1665	poll_wait ();
1330		1666
1331	int	1667	int
1332	nreqs()	1668	nreqs ()
1333	PROTOTYPE:
1334	CODE:	1669	CODE:
1335	RETVAL = eio_nreqs ();	1670	RETVAL = eio_nreqs ();
1336	OUTPUT:	1671	OUTPUT:
1337	RETVAL	1672	RETVAL
1338		1673
1339	int	1674	int
1340	nready()	1675	nready ()
1341	PROTOTYPE:
1342	CODE:	1676	CODE:
1343	RETVAL = eio_nready ();	1677	RETVAL = eio_nready ();
1344	OUTPUT:	1678	OUTPUT:
1345	RETVAL	1679	RETVAL
1346		1680
1347	int	1681	int
1348	npending()	1682	npending ()
1349	PROTOTYPE:
1350	CODE:	1683	CODE:
1351	RETVAL = eio_npending ();	1684	RETVAL = eio_npending ();
1352	OUTPUT:	1685	OUTPUT:
1353	RETVAL	1686	RETVAL
1354		1687
1355	int	1688	int
1356	nthreads()	1689	nthreads ()
1357	PROTOTYPE:
1358	CODE:	1690	CODE:
1359	RETVAL = eio_nthreads ();	1691	RETVAL = eio_nthreads ();
1360	OUTPUT:	1692	OUTPUT:
1361	RETVAL	1693	RETVAL
1362		1694
1363	int	1695	int
1364	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)	1696	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1365	PROTOTYPE: $$$$
1366	CODE:	1697	CODE:
1367	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1368	RETVAL = posix_fadvise (fh, offset, length, advice);	1698	RETVAL = posix_fadvise (fh, offset, length, advice);
1369	#else
1370	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1371	#endif
1372	OUTPUT:	1699	OUTPUT:
1373	RETVAL	1700	RETVAL
1374		1701
1375	ssize_t	1702	IV
1376	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)	1703	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1377	PROTOTYPE: $$$$
1378	CODE:	1704	CODE:
1379	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);	1705	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1380	OUTPUT:	1706	OUTPUT:
1381	RETVAL	1707	RETVAL
1382		1708
1383	void	1709	void
1384	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)	1710	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1385	PROTOTYPE: $$$$$;$
1386	PPCODE:	1711	PPCODE:
1387	sv_unmagic (scalar, MMAP_MAGIC);	1712	sv_unmagic (scalar, MMAP_MAGIC);
1388	{	1713	{
1389	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;	1714	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1390	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);	1715	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
…		…
1413	XSRETURN_YES;	1738	XSRETURN_YES;
1414	}	1739	}
1415		1740
1416	void	1741	void
1417	munmap (SV *scalar)	1742	munmap (SV *scalar)
1418	PROTOTYPE: $
1419	CODE:	1743	CODE:
1420	sv_unmagic (scalar, MMAP_MAGIC);	1744	sv_unmagic (scalar, MMAP_MAGIC);
1421		1745
1422	int	1746	int
1423	mlockall (int flags)	1747	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1424	PROTOTYPE: $	1748	ALIAS:
		1749	mprotect = 1
1425	CODE:	1750	CODE:
		1751	{
		1752	STRLEN svlen;
		1753	void *addr = SvPVbyte (scalar, svlen);
		1754	size_t len = SvUV (length);
		1755
		1756	if (offset < 0)
		1757	offset += svlen;
		1758
		1759	if (offset < 0 || offset > svlen)
		1760	croak ("offset outside of scalar");
		1761
		1762	if (!SvOK (length) || len + offset > svlen)
		1763	len = svlen - offset;
		1764
		1765	addr = (void *)(((intptr_t)addr) + offset);
		1766	eio_page_align (&addr, &len);
		1767
		1768	switch (ix)
		1769	{
		1770	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1771	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1772	}
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1779	CODE:
		1780	{
		1781	STRLEN svlen;
		1782	void *addr = SvPVbyte (scalar, svlen);
		1783	size_t len = SvUV (length);
		1784
		1785	if (offset < 0)
		1786	offset += svlen;
		1787
		1788	if (offset < 0 || offset > svlen)
		1789	croak ("offset outside of scalar");
		1790
		1791	if (!SvOK (length) || len + offset > svlen)
		1792	len = svlen - offset;
		1793
		1794	addr = (void *)(((intptr_t)addr) + offset);
		1795	eio_page_align (&addr, &len);
1426	#if _POSIX_MEMLOCK	1796	#if _POSIX_MEMLOCK_RANGE
1427	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7	1797	RETVAL = munlock (addr, len);
1428	extern int mallopt (int, int);
1429	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1430	#endif
1431	mlockall (flags);
1432	#else	1798	#else
1433	RETVAL = -1;	1799	RETVAL = ((errno = ENOSYS), -1);
1434	errno = ENOSYS;
1435	#endif	1800	#endif
		1801	}
1436	OUTPUT:	1802	OUTPUT:
1437	RETVAL	1803	RETVAL
1438		1804
1439	int	1805	int
1440	munlockall ()	1806	munlockall ()
1441	PROTOTYPE:
1442	CODE:	1807	CODE:
1443	#if _POSIX_MEMLOCK	1808	#if _POSIX_MEMLOCK
1444	munlockall ();	1809	munlockall ();
1445	#else	1810	#else
1446	RETVAL = -1;	1811	RETVAL = -1;
…		…
1454	SvREFCNT_dec (on_next_submit);	1819	SvREFCNT_dec (on_next_submit);
1455	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;	1820	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1456		1821
1457	PROTOTYPES: DISABLE	1822	PROTOTYPES: DISABLE
1458		1823
		1824	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1825
		1826	BOOT:
		1827	{
		1828	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1829	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1830	}
		1831
		1832	void
		1833	DESTROY (SV *self)
		1834	CODE:
		1835	{
		1836	aio_wd wd = SvAIO_WD (self);
		1837	#if HAVE_AT
		1838	{
		1839	SV *callback = &PL_sv_undef;
		1840	dREQ; /* clobbers next_pri :/ */
		1841	next_pri = req->pri; /* restore next_pri */
		1842	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1843	req->type = EIO_WD_CLOSE;
		1844	req->wd = wd;
		1845	REQ_SEND;
		1846	}
		1847	#else
		1848	eio_wd_close_sync (wd);
		1849	#endif
		1850	}
		1851
1459	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1460		1853
1461	void	1854	void
1462	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1463	CODE:	1856	CODE:

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