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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.163 by root, Sun Jan 10 23:44:02 2010 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.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>
16	#include <limits.h>	17	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	18	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	19	#include <sched.h>
21		20
22	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
23	# if __linux
24	# include <sys/sendfile.h>	22	# include <sys/mman.h>
25	# elif __freebsd	23	#endif
26	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#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
27	# include <sys/uio.h>	68	# include <sys/time.h>
28	# elif __hpux
29	# include <sys/socket.h>
30	# elif __solaris /* not yet */
31	# include <sys/sendfile.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
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#ifndef ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
32	# else	186	# else
33	# error sendfile support requested but not available	187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34	# endif	188	# endif
35	#endif	189	#endif
36		190	#ifndef MAP_HUGETLB
37	/* used for struct dirent, AIX doesn't provide it */	191	# define MAP_HUGETLB 0
38	#ifndef NAME_MAX
39	# define NAME_MAX 4096
40	#endif	192	#endif
41		193	#ifndef MAP_LOCKED
42	#if __ia64	194	# define MAP_LOCKED 0
43	# define STACKSIZE 65536
44	#else
45	# define STACKSIZE 8192
46	#endif	195	#endif
		196	#ifndef MAP_NORESERVE
		197	# define MAP_NORESERVE 0
		198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
		205
		206	#ifndef PAGESIZE
		207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#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)
47		214
48	enum {	215	enum {
49	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	REQ_GROUP,
59	};	217	};
60		218
61	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
62	#define AIO_GRP_KLASS "IO::AIO::GRP"
63		220
64	typedef struct aio_cb
65	{
66	struct aio_cb *grp, *grp_prev, *grp_next;
67
68	struct aio_cb *volatile next;
69
70	SV *self; /* the perl counterpart of this request, if any */
71
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	Stat_t *statdata;
76	off_t offset;
77	size_t length;
78	ssize_t result;
79
80	int type;
81	int fd, fd2;
82	int errorno;
83	STRLEN dataoffset;
84	mode_t mode; /* open */
85	unsigned char cancelled;
86	} aio_cb;
87
88	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
89	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
90	typedef aio_cb *aio_group;
91		223
92	static int started, wanted;	224	static SV *on_next_submit;
93	static volatile int nreqs;	225	static int next_pri = EIO_PRI_DEFAULT;
94	static int max_outstanding = 1<<30;	226	static int max_outstanding;
95	static int respipe [2];
96		227
97	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	228	static s_epipe respipe;
98	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
99	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
100		229
101	static volatile aio_req reqs, reqe; /* queue start, queue end */	230	static void req_destroy (aio_req req);
102	static volatile aio_req ress, rese; /* queue start, queue end */	231	static void req_cancel (aio_req req);
		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
103		244
104	/* must be called at most once */	245	/* must be called at most once */
105	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
106	{	247	{
		248	if (!req->self)
		249	{
107	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
108	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		252	}
109		253
110	return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
111	}	255	}
112		256
113	static aio_req SvAIO_REQ (SV *sv, const char *klass)	257	static aio_req SvAIO_REQ (SV *sv)
114	{	258	{
115	if (!sv_derived_from (sv, klass) || !SvROK (sv))	259	MAGIC *mg;
		260
		261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
116	croak ("object of class %s expected", klass);	265	croak ("object of class IO::AIO::REQ expected");
117		266
118	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119		268
120	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
121	}	270	}
122		271
		272	static void aio_grp_feed (aio_req grp)
		273	{
		274	if (grp->sv2 && SvOK (grp->sv2))
		275	{
		276	dSP;
		277
		278	ENTER;
		279	SAVETMPS;
		280	PUSHMARK (SP);
		281	XPUSHs (req_sv (grp, aio_grp_stash));
		282	PUTBACK;
		283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		284	SPAGAIN;
		285	FREETMPS;
		286	LEAVE;
		287	}
		288	}
		289
		290	static void req_submit (eio_req *req)
		291	{
		292	eio_submit (req);
		293
		294	if (expect_false (on_next_submit))
		295	{
		296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
		298
		299	on_next_submit = 0;
		300
		301	PUSHMARK (SP);
		302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
		304	}
		305	}
		306
		307	static int req_invoke (eio_req *req)
		308	{
		309	dSP;
		310
		311	if (req->flags & FLAG_SV2_RO_OFF)
		312	SvREADONLY_off (req->sv2);
		313
		314	if (!EIO_CANCELLED (req) && req->callback)
		315	{
		316	ENTER;
		317	SAVETMPS;
		318	PUSHMARK (SP);
		319	EXTEND (SP, 1);
		320
		321	switch (req->type)
		322	{
		323	case EIO_READDIR:
		324	{
		325	SV *rv = &PL_sv_undef;
		326
		327	if (req->result >= 0)
		328	{
		329	int i;
		330	char *names = (char *)req->ptr2;
		331	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		332	AV *av = newAV ();
		333
		334	av_extend (av, req->result - 1);
		335
		336	for (i = 0; i < req->result; ++i)
		337	{
		338	if (req->int1 & EIO_READDIR_DENTS)
		339	{
		340	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		341
		342	if (req->int1 & EIO_READDIR_CUSTOM2)
		343	{
		344	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		345	AV *avent = newAV ();
		346
		347	av_extend (avent, 2);
		348
		349	if (!sv_type [ent->type])
		350	{
		351	sv_type [ent->type] = newSViv (ent->type);
		352	SvREADONLY_on (sv_type [ent->type]);
		353	}
		354
		355	av_store (avent, 0, namesv);
		356	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		357	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		358
		359	av_store (av, i, newRV_noinc ((SV *)avent));
		360	}
		361	else
		362	av_store (av, i, namesv);
		363
		364	++ent;
		365	}
		366	else
		367	{
		368	SV *name = newSVpv (names, 0);
		369	av_store (av, i, name);
		370	names += SvCUR (name) + 1;
		371	}
		372	}
		373
		374	rv = sv_2mortal (newRV_noinc ((SV *)av));
		375	}
		376
		377	PUSHs (rv);
		378
		379	if (req->int1 & EIO_READDIR_CUSTOM1)
		380	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		381	}
		382	break;
		383
		384	case EIO_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh = &PL_sv_undef;
		388
		389	if (req->result >= 0)
		390	{
		391	GV *gv = (GV *)sv_newmortal ();
		392	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		393	char sym [64];
		394	int symlen;
		395
		396	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		397	gv_init (gv, aio_stash, sym, symlen, 0);
		398
		399	symlen = snprintf (
		400	sym,
		401	sizeof (sym),
		402	"%s&=%d",
		403	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		404	(int)req->result
		405	);
		406
		407	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		408	fh = (SV *)gv;
		409	}
		410
		411	PUSHs (fh);
		412	}
		413	break;
		414
		415	case EIO_STATVFS:
		416	case EIO_FSTATVFS:
		417	{
		418	SV *rv = &PL_sv_undef;
		419
		420	if (req->result >= 0)
		421	{
		422	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		423	HV *hv = newHV ();
		424
		425	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		426
		427	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		428	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		429	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		430	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		431	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		432	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		433	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		434	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		435	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		436	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		437	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		438	}
		439
		440	PUSHs (rv);
		441	}
		442
		443	break;
		444
		445	case EIO_GROUP:
		446	req->int1 = 2; /* mark group as finished */
		447
		448	if (req->sv1)
		449	{
		450	int i;
		451	AV *av = (AV *)req->sv1;
		452
		453	EXTEND (SP, AvFILL (av) + 1);
		454	for (i = 0; i <= AvFILL (av); ++i)
		455	PUSHs (*av_fetch (av, i, 0));
		456	}
		457	break;
		458
		459	case EIO_NOP:
		460	case EIO_BUSY:
		461	break;
		462
		463	case EIO_READLINK:
		464	if (req->result > 0)
		465	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		466	break;
		467
		468	case EIO_STAT:
		469	case EIO_LSTAT:
		470	case EIO_FSTAT:
		471	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		472	PL_laststatval = req->result;
		473	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		474	PUSHs (sv_2mortal (newSViv (req->result)));
		475	break;
		476
		477	case EIO_READ:
		478	{
		479	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		480	*SvEND (req->sv2) = 0;
		481	SvPOK_only (req->sv2);
		482	SvSETMAGIC (req->sv2);
		483	PUSHs (sv_2mortal (newSViv (req->result)));
		484	}
		485	break;
		486
		487	case EIO_DUP2:
		488	if (req->result > 0)
		489	req->result = 0;
		490	/* FALLTHROUGH */
		491
		492	default:
		493	PUSHs (sv_2mortal (newSViv (req->result)));
		494	break;
		495	}
		496
		497	errno = req->errorno;
		498
		499	PUTBACK;
		500	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		501	SPAGAIN;
		502
		503	FREETMPS;
		504	LEAVE;
		505
		506	PUTBACK;
		507	}
		508
		509	return !!SvTRUE (ERRSV);
		510	}
		511
123	static void req_free (aio_req req)	512	static void req_destroy (aio_req req)
124	{	513	{
125	if (req->self)	514	if (req->self)
126	{	515	{
127	sv_unmagic (req->self, PERL_MAGIC_ext);	516	sv_unmagic (req->self, PERL_MAGIC_ext);
128	SvREFCNT_dec (req->self);	517	SvREFCNT_dec (req->self);
129	}	518	}
130		519
131	if (req->data)
132	SvREFCNT_dec (req->data);
133
134	if (req->fh)
135	SvREFCNT_dec (req->fh);	520	SvREFCNT_dec (req->sv1);
136
137	if (req->fh2)
138	SvREFCNT_dec (req->fh2);	521	SvREFCNT_dec (req->sv2);
139
140	if (req->statdata)
141	Safefree (req->statdata);
142
143	if (req->callback)
144	SvREFCNT_dec (req->callback);	522	SvREFCNT_dec (req->callback);
145
146	if (req->type == REQ_READDIR && req->result >= 0)
147	free (req->data2ptr);
148		523
149	Safefree (req);	524	Safefree (req);
150	}	525	}
151		526
		527	static void req_cancel_subs (aio_req grp)
		528	{
		529	aio_req sub;
		530
		531	if (grp->type != EIO_GROUP)
		532	return;
		533
		534	SvREFCNT_dec (grp->sv2);
		535	grp->sv2 = 0;
		536
		537	eio_grp_cancel (grp);
		538	}
		539
152	static void	540	static void
153	poll_wait ()	541	create_respipe (void)
154	{	542	{
155	if (nreqs && !ress)	543	if (s_epipe_renew (&respipe))
		544	croak ("IO::AIO: unable to initialize result pipe");
		545	}
		546
		547	static void poll_wait (void)
		548	{
		549	while (eio_nreqs ())
156	{	550	{
157	fd_set rfd;	551	int size;
158	FD_ZERO(&rfd);
159	FD_SET(respipe [0], &rfd);
160		552
161	select (respipe [0] + 1, &rfd, 0, 0, 0);	553	X_LOCK (reslock);
		554	size = res_queue.size;
		555	X_UNLOCK (reslock);
		556
		557	if (size)
		558	return;
		559
		560	etp_maybe_start_thread ();
		561
		562	s_epipe_wait (&respipe);
162	}	563	}
163	}	564	}
164		565
165	static int	566	static int poll_cb (void)
166	poll_cb ()
167	{	567	{
168	dSP;
169	int count = 0;
170	int do_croak = 0;
171	aio_req req;
172
173	for (;;)	568	for (;;)
174	{	569	{
175	pthread_mutex_lock (&reslock);	570	int res = eio_poll ();
176	req = ress;
177		571
178	if (req)	572	if (res > 0)
179	{
180	ress = req->next;
181
182	if (!ress)
183	{
184	/* read any signals sent by the worker threads */
185	char buf [32];
186	while (read (respipe [0], buf, 32) == 32)
187	;
188
189	rese = 0;
190	}
191	}
192
193	pthread_mutex_unlock (&reslock);
194
195	if (!req)
196	break;
197
198	nreqs--;
199
200	if (req->type == REQ_QUIT)
201	started--;
202	else
203	{
204	int errorno = errno;
205	errno = req->errorno;
206
207	if (req->type == REQ_READ)
208	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
209
210	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
211	SvREADONLY_off (req->data);
212
213	if (req->statdata)
214	{
215	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
216	PL_laststatval = req->result;
217	PL_statcache = *(req->statdata);
218	}
219
220	ENTER;
221	PUSHMARK (SP);
222
223	if (req->type == REQ_READDIR)
224	{
225	SV *rv = &PL_sv_undef;
226
227	if (req->result >= 0)
228	{
229	char *buf = req->data2ptr;
230	AV *av = newAV ();
231
232	while (req->result)
233	{
234	SV *sv = newSVpv (buf, 0);
235
236	av_push (av, sv);
237	buf += SvCUR (sv) + 1;
238	req->result--;
239	}
240
241	rv = sv_2mortal (newRV_noinc ((SV *)av));
242	}
243
244	XPUSHs (rv);
245	}
246	else
247	{
248	XPUSHs (sv_2mortal (newSViv (req->result)));
249
250	if (req->type == REQ_OPEN)
251	{
252	/* convert fd to fh */
253	SV *fh;
254
255	PUTBACK;
256	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
257	SPAGAIN;
258
259	fh = SvREFCNT_inc (POPs);
260
261	PUSHMARK (SP);
262	XPUSHs (sv_2mortal (fh));
263	}
264	}
265
266	if (SvOK (req->callback) && !req->cancelled)
267	{
268	PUTBACK;
269	call_sv (req->callback, G_VOID | G_EVAL);
270	SPAGAIN;
271
272	if (SvTRUE (ERRSV))
273	{
274	req_free (req);
275	croak (0);	573	croak (0);
276	}
277	}
278		574
279	LEAVE;	575	if (!max_outstanding || max_outstanding > eio_nreqs ())
		576	return res;
280		577
281	errno = errorno;	578	poll_wait ();
282	count++;
283	}
284
285	req_free (req);
286	}	579	}
287
288	return count;
289	}	580	}
290		581
291	static void *aio_proc(void *arg);	582	static void atfork_child (void)
292
293	static void
294	start_thread (void)
295	{	583	{
296	sigset_t fullsigset, oldsigset;	584	create_respipe ();
297	pthread_t tid;
298	pthread_attr_t attr;
299
300	pthread_attr_init (&attr);
301	pthread_attr_setstacksize (&attr, STACKSIZE);
302	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
303
304	sigfillset (&fullsigset);
305	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
306
307	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
308	started++;
309
310	sigprocmask (SIG_SETMASK, &oldsigset, 0);
311	}
312
313	static void
314	req_send (aio_req req)
315	{
316	while (started < wanted && nreqs >= started)
317	start_thread ();
318
319	nreqs++;
320
321	pthread_mutex_lock (&reqlock);
322
323	req->next = 0;
324
325	if (reqe)
326	{
327	reqe->next = req;
328	reqe = req;
329	}
330	else
331	reqe = reqs = req;
332
333	pthread_cond_signal (&reqwait);
334	pthread_mutex_unlock (&reqlock);
335
336	if (nreqs > max_outstanding)
337	for (;;)
338	{
339	poll_cb ();
340
341	if (nreqs <= max_outstanding)
342	break;
343
344	poll_wait ();
345	}
346	}
347
348	static void
349	end_thread (void)
350	{
351	aio_req req;
352	Newz (0, req, 1, aio_cb);
353	req->type = REQ_QUIT;
354
355	req_send (req);
356	}
357
358	static void min_parallel (int nthreads)
359	{
360	if (wanted < nthreads)
361	wanted = nthreads;
362	}
363
364	static void max_parallel (int nthreads)
365	{
366	int cur = started;
367
368	if (wanted > nthreads)
369	wanted = nthreads;
370
371	while (cur > wanted)
372	{
373	end_thread ();
374	cur--;
375	}
376
377	while (started > wanted)
378	{
379	poll_wait ();
380	poll_cb ();
381	}
382	}
383
384	static void create_pipe ()
385	{
386	if (pipe (respipe))
387	croak ("unable to initialize result pipe");
388
389	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
390	croak ("cannot set result pipe to nonblocking mode");
391
392	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
393	croak ("cannot set result pipe to nonblocking mode");
394	}	585	}
395		586
396	/*****************************************************************************/	587	/*****************************************************************************/
397	/* work around various missing functions */
398		588
399	#if !HAVE_PREADWRITE	589	#if !_POSIX_MAPPED_FILES
400	# define pread aio_pread	590	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
401	# define pwrite aio_pwrite	591	# define munmap(addr,length) (errno = ENOSYS, -1)
402
403	/*
404	* make our pread/pwrite safe against themselves, but not against
405	* normal read/write by using a mutex. slows down execution a lot,
406	* but that's your problem, not mine.
407	*/
408	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
409
410	static ssize_t
411	pread (int fd, void *buf, size_t count, off_t offset)
412	{
413	ssize_t res;
414	off_t ooffset;
415
416	pthread_mutex_lock (&preadwritelock);
417	ooffset = lseek (fd, 0, SEEK_CUR);
418	lseek (fd, offset, SEEK_SET);
419	res = read (fd, buf, count);
420	lseek (fd, ooffset, SEEK_SET);
421	pthread_mutex_unlock (&preadwritelock);
422
423	return res;
424	}
425
426	static ssize_t
427	pwrite (int fd, void *buf, size_t count, off_t offset)
428	{
429	ssize_t res;
430	off_t ooffset;
431
432	pthread_mutex_lock (&preadwritelock);
433	ooffset = lseek (fd, 0, SEEK_CUR);
434	lseek (fd, offset, SEEK_SET);
435	res = write (fd, buf, count);
436	lseek (fd, offset, SEEK_SET);
437	pthread_mutex_unlock (&preadwritelock);
438
439	return res;
440	}
441	#endif	592	#endif
442		593
443	#if !HAVE_FDATASYNC	594	#define MMAP_MAGIC PERL_MAGIC_ext
444	# define fdatasync fsync
445	#endif
446		595
447	#if !HAVE_READAHEAD
448	# define readahead aio_readahead
449
450	static ssize_t
451	readahead (int fd, off_t offset, size_t count)
452	{
453	char readahead_buf[4096];
454
455	while (count > 0)
456	{
457	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
458
459	pread (fd, readahead_buf, len, offset);
460	offset += len;
461	count -= len;
462	}
463
464	errno = 0;
465	}
466	#endif
467
468	#if !HAVE_READDIR_R
469	# define readdir_r aio_readdir_r
470
471	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472
473	static int	596	static int
474	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
475	{	598	{
476	struct dirent *e;	599	int old_errno = errno;
477	int errorno;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
478
479	pthread_mutex_lock (&readdirlock);
480
481	e = readdir (dirp);
482	errorno = errno;	601	errno = old_errno;
483		602
484	if (e)	603	mg->mg_obj = 0; /* just in case */
485	{
486	*res = ent;
487	strcpy (ent->d_name, e->d_name);
488	}
489	else
490	*res = 0;
491		604
492	pthread_mutex_unlock (&readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
493		610
494	errno = errorno;
495	return e ? 0 : -1;
496	}
497	#endif
498
499	/* sendfile always needs emulation */
500	static ssize_t
501	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
502	{
503	ssize_t res;
504
505	if (!count)
506	return 0;	611	return 0;
507
508	#if HAVE_SENDFILE
509	# if __linux
510	res = sendfile (ofd, ifd, &offset, count);
511
512	# elif __freebsd
513	/*
514	* Of course, the freebsd sendfile is a dire hack with no thoughts
515	* wasted on making it similar to other I/O functions.
516	*/
517	{
518	off_t sbytes;
519	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
520
521	if (res < 0 && sbytes)
522	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
523	res = sbytes;
524	}
525
526	# elif __hpux
527	res = sendfile (ofd, ifd, offset, count, 0, 0);
528
529	# elif __solaris
530	{
531	struct sendfilevec vec;
532	size_t sbytes;
533
534	vec.sfv_fd = ifd;
535	vec.sfv_flag = 0;
536	vec.sfv_off = offset;
537	vec.sfv_len = count;
538
539	res = sendfilev (ofd, &vec, 1, &sbytes);
540
541	if (res < 0 && sbytes)
542	res = sbytes;
543	}
544
545	# endif
546	#else
547	res = -1;
548	errno = ENOSYS;
549	#endif
550
551	if (res < 0
552	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
553	#if __solaris
554	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
555	#endif
556	)
557	)
558	{
559	/* emulate sendfile. this is a major pain in the ass */
560	char buf[4096];
561	res = 0;
562
563	while (count)
564	{
565	ssize_t cnt;
566
567	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
568
569	if (cnt <= 0)
570	{
571	if (cnt && !res) res = -1;
572	break;
573	}
574
575	cnt = write (ofd, buf, cnt);
576
577	if (cnt <= 0)
578	{
579	if (cnt && !res) res = -1;
580	break;
581	}
582
583	offset += cnt;
584	res += cnt;
585	count -= cnt;
586	}
587	}
588
589	return res;
590	}	612	}
591		613
592	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
593	static int	615	0, 0, 0, 0, mmap_free
594	scandir_ (const char *path, void **namesp)	616	};
595	{
596	DIR *dirp = opendir (path);
597	union
598	{
599	struct dirent d;
600	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601	} u;
602	struct dirent *entp;
603	char *name, *names;
604	int memlen = 4096;
605	int memofs = 0;
606	int res = 0;
607	int errorno;
608
609	if (!dirp)
610	return -1;
611
612	names = malloc (memlen);
613
614	for (;;)
615	{
616	errno = 0, readdir_r (dirp, &u.d, &entp);
617
618	if (!entp)
619	break;
620
621	name = entp->d_name;
622
623	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
624	{
625	int len = strlen (name) + 1;
626
627	res++;
628
629	while (memofs + len > memlen)
630	{
631	memlen *= 2;
632	names = realloc (names, memlen);
633	if (!names)
634	break;
635	}
636
637	memcpy (names + memofs, name, len);
638	memofs += len;
639	}
640	}
641
642	errorno = errno;
643	closedir (dirp);
644
645	if (errorno)
646	{
647	free (names);
648	errno = errorno;
649	res = -1;
650	}
651
652	*namesp = (void *)names;
653	return res;
654	}
655		617
656	/*****************************************************************************/	618	/*****************************************************************************/
657		619
658	static void *	620	static SV *
659	aio_proc (void *thr_arg)	621	get_cb (SV *cb_sv)
660	{	622	{
661	aio_req req;	623	SvGETMAGIC (cb_sv);
662	int type;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
663
664	do
665	{
666	pthread_mutex_lock (&reqlock);
667
668	for (;;)
669	{
670	req = reqs;
671
672	if (reqs)
673	{
674	reqs = reqs->next;
675	if (!reqs) reqe = 0;
676	}
677
678	if (req)
679	break;
680
681	pthread_cond_wait (&reqwait, &reqlock);
682	}
683
684	pthread_mutex_unlock (&reqlock);
685
686	errno = 0; /* strictly unnecessary */
687
688	if (!req->cancelled)
689	switch (req->type)
690	{
691	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
692	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
693
694	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
695	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
696
697	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
698	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
699	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
700
701	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
702	case REQ_CLOSE: req->result = close (req->fd); break;
703	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
704	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
705	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
706	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
707	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
708
709	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
710	case REQ_FSYNC: req->result = fsync (req->fd); break;
711	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
712
713	case REQ_QUIT:
714	break;
715
716	default:
717	req->result = ENOSYS;
718	break;
719	}
720
721	req->errorno = errno;
722
723	pthread_mutex_lock (&reslock);
724
725	req->next = 0;
726
727	if (rese)
728	{
729	rese->next = req;
730	rese = req;
731	}
732	else
733	{
734	rese = ress = req;
735
736	/* write a dummy byte to the pipe so fh becomes ready */
737	write (respipe [1], &respipe, 1);
738	}
739
740	pthread_mutex_unlock (&reslock);
741	}
742	while (type != REQ_QUIT);
743
744	return 0;
745	}
746
747	/*****************************************************************************/
748
749	static void atfork_prepare (void)
750	{
751	pthread_mutex_lock (&reqlock);
752	pthread_mutex_lock (&reslock);
753	#if !HAVE_PREADWRITE
754	pthread_mutex_lock (&preadwritelock);
755	#endif
756	#if !HAVE_READDIR_R
757	pthread_mutex_lock (&readdirlock);
758	#endif
759	}
760
761	static void atfork_parent (void)
762	{
763	#if !HAVE_READDIR_R
764	pthread_mutex_unlock (&readdirlock);
765	#endif
766	#if !HAVE_PREADWRITE
767	pthread_mutex_unlock (&preadwritelock);
768	#endif
769	pthread_mutex_unlock (&reslock);
770	pthread_mutex_unlock (&reqlock);
771	}
772
773	static void atfork_child (void)
774	{
775	aio_req prv;
776
777	started = 0;
778
779	while (reqs)
780	{
781	prv = reqs;
782	reqs = prv->next;
783	req_free (prv);
784	}
785
786	reqs = reqe = 0;
787
788	while (ress)
789	{
790	prv = ress;
791	ress = prv->next;
792	req_free (prv);
793	}
794
795	ress = rese = 0;
796
797	close (respipe [0]);
798	close (respipe [1]);
799	create_pipe ();
800
801	atfork_parent ();
802	}	625	}
803		626
804	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
805	aio_req req; \	629	aio_req req; \
		630	int req_pri = next_pri; \
		631	next_pri = EIO_PRI_DEFAULT; \
806	\	632	\
807	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
808	croak ("callback must be undef or of reference type"); \
809	\	634	\
810	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
811	if (!req) \	636	if (!req) \
812	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
813	\	638	\
814	req->callback = newSVsv (callback)	639	req->callback = SvREFCNT_inc (cb_cv); \
		640	req->pri = req_pri
815		641
816	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
817	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
818	\	646	\
819	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
820	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
821		649
822	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
823		651
824	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
825		653
826	BOOT:	654	BOOT:
827	{	655	{
		656	static const struct {
		657	const char *name;
		658	IV iv;
		659	} *civ, const_iv[] = {
		660	# define const_niv(name, value) { # name, (IV) value },
		661	# define const_iv(name) { # name, (IV) name },
		662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_CREAT)
		668	const_iv (O_TRUNC)
		669	#ifndef _WIN32
		670	const_iv (S_IFIFO)
		671	#endif
		672	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		673	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		674	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		675	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		676	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		677	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		678
		679	const_iv (ST_RDONLY)
		680	const_iv (ST_NOSUID)
		681	const_iv (ST_NODEV)
		682	const_iv (ST_NOEXEC)
		683	const_iv (ST_SYNCHRONOUS)
		684	const_iv (ST_MANDLOCK)
		685	const_iv (ST_WRITE)
		686	const_iv (ST_APPEND)
		687	const_iv (ST_IMMUTABLE)
		688	const_iv (ST_NOATIME)
		689	const_iv (ST_NODIRATIME)
		690	const_iv (ST_RELATIME)
		691
		692	const_iv (PROT_EXEC)
		693	const_iv (PROT_NONE)
		694	const_iv (PROT_READ)
		695	const_iv (PROT_WRITE)
		696
		697	/*const_iv (MAP_FIXED)*/
		698	const_iv (MAP_PRIVATE)
		699	const_iv (MAP_SHARED)
		700	const_iv (MAP_ANONYMOUS)
		701
		702	/* linuxish */
		703	const_iv (MAP_HUGETLB)
		704	const_iv (MAP_LOCKED)
		705	const_iv (MAP_NORESERVE)
		706	const_iv (MAP_POPULATE)
		707	const_iv (MAP_NONBLOCK)
		708
		709	const_iv (MCL_FUTURE)
		710	const_iv (MCL_CURRENT)
		711
		712	const_eio (MS_ASYNC)
		713	const_eio (MS_INVALIDATE)
		714	const_eio (MS_SYNC)
		715
		716	const_eio (MT_MODIFY)
		717
		718	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		719	const_eio (SYNC_FILE_RANGE_WRITE)
		720	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		721
		722	const_eio (READDIR_DENTS)
		723	const_eio (READDIR_DIRS_FIRST)
		724	const_eio (READDIR_STAT_ORDER)
		725	const_eio (READDIR_FOUND_UNKNOWN)
		726
		727	const_eio (DT_UNKNOWN)
		728	const_eio (DT_FIFO)
		729	const_eio (DT_CHR)
		730	const_eio (DT_DIR)
		731	const_eio (DT_BLK)
		732	const_eio (DT_REG)
		733	const_eio (DT_LNK)
		734	const_eio (DT_SOCK)
		735	const_eio (DT_WHT)
		736	};
		737
828	HV *stash = gv_stashpv ("IO::AIO", 1);	738	aio_stash = gv_stashpv ("IO::AIO" , 1);
829	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	739	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
830	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	740	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
831	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
832		741
		742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
833	create_pipe ();	747	create_respipe ();
834	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
835	}
836		748
		749	if (eio_init (want_poll, done_poll) < 0)
		750	croak ("IO::AIO: unable to initialise eio library");
		751
		752	/* atfork child called in fifo order, so before eio's handler */
		753	X_THREAD_ATFORK (0, 0, atfork_child);
		754	}
		755
837	void	756	void
838	min_parallel (nthreads)	757	max_poll_reqs (int nreqs)
839	int nthreads
840	PROTOTYPE: $	758	PROTOTYPE: $
		759	CODE:
		760	eio_set_max_poll_reqs (nreqs);
841		761
842	void	762	void
843	max_parallel (nthreads)	763	max_poll_time (double nseconds)
844	int nthreads
845	PROTOTYPE: $	764	PROTOTYPE: $
846
847	int
848	max_outstanding (nreqs)
849	int nreqs
850	PROTOTYPE: $
851	CODE:	765	CODE:
852	RETVAL = max_outstanding;	766	eio_set_max_poll_time (nseconds);
		767
		768	void
		769	min_parallel (int nthreads)
		770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
		773
		774	void
		775	max_parallel (int nthreads)
		776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
		779
		780	void
		781	max_idle (int nthreads)
		782	PROTOTYPE: $
		783	CODE:
		784	eio_set_max_idle (nthreads);
		785
		786	void
		787	max_outstanding (int maxreqs)
		788	PROTOTYPE: $
		789	CODE:
853	max_outstanding = nreqs;	790	max_outstanding = maxreqs;
854		791
855	void	792	void
856	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
857	SV * pathname
858	int flags
859	int mode
860	SV * callback
861	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
862	PPCODE:	795	PPCODE:
863	{	796	{
864	dREQ;	797	dREQ;
865		798
866	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
867	req->data = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
868	req->dataptr = SvPVbyte_nolen (req->data);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
869	req->fd = flags;	802	req->int1 = flags;
870	req->mode = mode;	803	req->int2 = mode;
871		804
872	REQ_SEND;	805	REQ_SEND;
873	}	806	}
874		807
875	void	808	void
876	aio_close (fh,callback=&PL_sv_undef)	809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
877	SV * fh
878	SV * callback
879	PROTOTYPE: $;$	810	PROTOTYPE: $;$
880	ALIAS:	811	ALIAS:
881	aio_close = REQ_CLOSE
882	aio_fsync = REQ_FSYNC	812	aio_fsync = EIO_FSYNC
883	aio_fdatasync = REQ_FDATASYNC	813	aio_fdatasync = EIO_FDATASYNC
884	PPCODE:	814	PPCODE:
885	{	815	{
		816	int fd = s_fileno_croak (fh, 0);
886	dREQ;	817	dREQ;
887		818
888	req->type = ix;	819	req->type = ix;
889	req->fh = newSVsv (fh);	820	req->sv1 = newSVsv (fh);
890	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	821	req->int1 = fd;
891		822
892	REQ_SEND (req);	823	REQ_SEND (req);
893	}	824	}
894		825
895	void	826	void
		827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		828	PROTOTYPE: $$$$;$
		829	PPCODE:
		830	{
		831	int fd = s_fileno_croak (fh, 0);
		832	dREQ;
		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
		842	}
		843
		844	void
		845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		846	PROTOTYPE: $;$
		847	PPCODE:
		848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
		851	dREQ;
		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
		865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
		867	req->sv2 = newSVsv (fh);
		868	req->int2 = fd;
		869
		870	REQ_SEND (req);
		871	}
		872
		873	void
896	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897	SV * fh
898	UV offset
899	UV length
900	SV * data
901	UV dataoffset
902	SV * callback
903	ALIAS:	875	ALIAS:
904	aio_read = REQ_READ	876	aio_read = EIO_READ
905	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
906	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
907	PPCODE:	879	PPCODE:
908	{	880	{
909	aio_req req;
910	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
911	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
912		884	UV len = SvUV (length);
913	SvUPGRADE (data, SVt_PV);
914	SvPOK_on (data);
915		885
916	if (dataoffset < 0)	886	if (dataoffset < 0)
917	dataoffset += svlen;	887	dataoffset += svlen;
918		888
919	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
920	croak ("data offset outside of string");	890	croak ("dataoffset outside of data scalar");
921		891
922	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
923	{	893	{
924	/* write: check length and adjust. */	894	/* write: check length and adjust. */
925	if (length < 0 || length + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
926	length = svlen - dataoffset;	896	len = svlen - dataoffset;
927	}	897	}
928	else	898	else
929	{	899	{
930	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
931	svptr = SvGROW (data, length + dataoffset);	902	svptr = SvGROW (data, len + dataoffset + 1);
932	}	903	}
933
934	if (length < 0)
935	croak ("length must not be negative");
936		904
937	{	905	{
938	dREQ;	906	dREQ;
939		907
940	req->type = ix;	908	req->type = ix;
941	req->fh = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
943	: IoOFP (sv_2io (fh)));	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
944	req->offset = offset;	912	req->size = len;
945	req->length = length;
946	req->data = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
947	req->dataptr = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
		915	req->stroffset = dataoffset;
948		916
949	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
950	{	918	{
951	SvREADONLY_on (data);	919	SvREADONLY_on (data);
952	req->data2ptr = (void *)data;	920	req->flags |= FLAG_SV2_RO_OFF;
953	}	921	}
954		922
955	REQ_SEND;	923	REQ_SEND;
956	}	924	}
957	}	925	}
958		926
959	void	927	void
		928	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		929	PROTOTYPE: $$;$
		930	PPCODE:
		931	{
		932	SV *data;
		933	dREQ;
		934
		935	req->type = EIO_READLINK;
		936	req->sv1 = newSVsv (path);
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938
		939	REQ_SEND;
		940	}
		941
		942	void
960	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
961	SV * out_fh
962	SV * in_fh
963	UV in_offset
964	UV length
965	SV * callback
966	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
967	PPCODE:	945	PPCODE:
968	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
969	dREQ;	949	dREQ;
970		950
971	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
972	req->fh = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
973	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
974	req->fh2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
975	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
976	req->offset = in_offset;	956	req->offs = in_offset;
977	req->length = length;	957	req->size = length;
978		958
979	REQ_SEND;	959	REQ_SEND;
980	}	960	}
981		961
982	void	962	void
983	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
984	SV * fh
985	UV offset
986	IV length
987	SV * callback
988	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
989	PPCODE:	965	PPCODE:
990	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
991	dREQ;	968	dREQ;
992		969
993	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
994	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
995	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
996	req->offset = offset;	973	req->offs = offset;
997	req->length = length;	974	req->size = length;
998		975
999	REQ_SEND;	976	REQ_SEND;
1000	}	977	}
1001		978
1002	void	979	void
1003	aio_stat (fh_or_path,callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1004	SV * fh_or_path
1005	SV * callback
1006	ALIAS:	981	ALIAS:
1007	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1008	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1009	PPCODE:	985	PPCODE:
1010	{	986	{
1011	dREQ;	987	dREQ;
1012		988
1013	New (0, req->statdata, 1, Stat_t);	989	req->sv1 = newSVsv (fh_or_path);
1014	if (!req->statdata)
1015	{
1016	req_free (req);
1017	croak ("out of memory during aio_req->statdata allocation");
1018	}
1019		990
1020	if (SvPOK (fh_or_path))	991	if (SvPOK (req->sv1))
1021	{	992	{
1022	req->type = ix;	993	req->type = ix;
1023	req->data = newSVsv (fh_or_path);
1024	req->dataptr = SvPVbyte_nolen (req->data);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1025	}	995	}
1026	else	996	else
1027	{	997	{
1028	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1029	req->fh = newSVsv (fh_or_path);
1030	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1031	}	1000	}
1032		1001
1033	REQ_SEND;	1002	REQ_SEND;
1034	}	1003	}
1035		1004
1036	void	1005	void
		1006	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1007	PPCODE:
		1008	{
		1009	dREQ;
		1010
		1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1013	req->sv1 = newSVsv (fh_or_path);
		1014
		1015	if (SvPOK (req->sv1))
		1016	{
		1017	req->type = EIO_UTIME;
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	}
		1020	else
		1021	{
		1022	req->type = EIO_FUTIME;
		1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1024	}
		1025
		1026	REQ_SEND;
		1027	}
		1028
		1029	void
		1030	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	dREQ;
		1034
		1035	req->sv1 = newSVsv (fh_or_path);
		1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1037
		1038	if (SvPOK (req->sv1))
		1039	{
		1040	req->type = EIO_TRUNCATE;
		1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1042	}
		1043	else
		1044	{
		1045	req->type = EIO_FTRUNCATE;
		1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1047	}
		1048
		1049	REQ_SEND;
		1050	}
		1051
		1052	void
		1053	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1054	ALIAS:
		1055	aio_chmod = EIO_CHMOD
		1056	aio_mkdir = EIO_MKDIR
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->int2 = mode;
		1062	req->sv1 = newSVsv (fh_or_path);
		1063
		1064	if (SvPOK (req->sv1))
		1065	{
		1066	req->type = ix;
		1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1068	}
		1069	else
		1070	{
		1071	req->type = EIO_FCHMOD;
		1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1073	}
		1074
		1075	REQ_SEND;
		1076	}
		1077
		1078	void
		1079	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1080	PPCODE:
		1081	{
		1082	dREQ;
		1083
		1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1086	req->sv1 = newSVsv (fh_or_path);
		1087
		1088	if (SvPOK (req->sv1))
		1089	{
		1090	req->type = EIO_CHOWN;
		1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1092	}
		1093	else
		1094	{
		1095	req->type = EIO_FCHOWN;
		1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1097	}
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_READDIR;
		1109	req->sv1 = newSVsv (pathname);
		1110	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1111	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1112
		1113	if (flags & EIO_READDIR_DENTS)
		1114	req->int1 |= EIO_READDIR_CUSTOM2;
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
1037	aio_unlink (pathname,callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1038	SV * pathname
1039	SV * callback
1040	ALIAS:	1121	ALIAS:
1041	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1042	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1043	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1044	PPCODE:	1125	PPCODE:
1045	{	1126	{
1046	dREQ;	1127	dREQ;
1047		1128
1048	req->type = ix;	1129	req->type = ix;
1049	req->data = newSVsv (pathname);	1130	req->sv1 = newSVsv (pathname);
1050	req->dataptr = SvPVbyte_nolen (req->data);	1131	req->ptr1 = SvPVbyte_nolen (req->sv1);
1051		1132
1052	REQ_SEND;	1133	REQ_SEND;
1053	}	1134	}
1054		1135
1055	void	1136	void
1056	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1057	SV * oldpath
1058	SV * newpath
1059	SV * callback
1060	ALIAS:	1138	ALIAS:
1061	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1062	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1063	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1064	PPCODE:	1142	PPCODE:
1065	{	1143	{
1066	dREQ;	1144	dREQ;
1067		1145
1068	req->type = ix;	1146	req->type = ix;
1069	req->fh = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
1070	req->data2ptr = SvPVbyte_nolen (req->fh);	1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
1071	req->data = newSVsv (newpath);	1149	req->sv2 = newSVsv (newpath);
1072	req->dataptr = SvPVbyte_nolen (req->data);	1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1073		1151
1074	REQ_SEND;	1152	REQ_SEND;
1075	}	1153	}
1076		1154
1077	void	1155	void
1078	aio_group (callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1079	SV * callback	1157	PPCODE:
		1158	{
		1159	dREQ;
		1160
		1161	req->type = EIO_MKNOD;
		1162	req->sv1 = newSVsv (pathname);
		1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1164	req->int2 = (mode_t)mode;
		1165	req->offs = dev;
		1166
		1167	REQ_SEND;
		1168	}
		1169
		1170	void
		1171	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1172	ALIAS:
		1173	aio_mtouch = EIO_MTOUCH
		1174	aio_msync = EIO_MSYNC
1080	PROTOTYPE: ;&	1175	PROTOTYPE: $$$$;$
1081	PPCODE:	1176	PPCODE:
1082	{	1177	{
		1178	STRLEN svlen;
		1179	UV len = SvUV (length);
		1180	char *svptr = SvPVbyte (data, svlen);
		1181
		1182	if (offset < 0)
		1183	offset += svlen;
		1184
		1185	if (offset < 0 || offset > svlen)
		1186	croak ("offset outside of scalar");
		1187
		1188	if (!SvOK (length) || len + offset > svlen)
		1189	len = svlen - offset;
		1190
		1191	{
		1192	dREQ;
		1193
		1194	req->type = ix;
		1195	req->size = len;
		1196	req->sv2 = SvREFCNT_inc (data);
		1197	req->ptr2 = (char *)svptr + offset;
		1198	req->int1 = flags;
		1199
		1200	REQ_SEND;
		1201	}
		1202	}
		1203
		1204	void
		1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
1083	dREQ;	1208	dREQ;
		1209
		1210	req->type = EIO_BUSY;
		1211	req->nv1 = delay < 0. ? 0. : delay;
		1212
		1213	REQ_SEND;
		1214	}
		1215
		1216	void
		1217	aio_group (SV *callback=&PL_sv_undef)
		1218	PROTOTYPE: ;$
		1219	PPCODE:
		1220	{
		1221	dREQ;
		1222
1084	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
		1224
		1225	req_submit (req);
1085	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1086	}	1227	}
		1228
		1229	void
		1230	aio_nop (SV *callback=&PL_sv_undef)
		1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
		1234	PPCODE:
		1235	{
		1236	dREQ;
		1237
		1238	req->type = ix;
		1239
		1240	REQ_SEND;
		1241	}
		1242
		1243	int
		1244	aioreq_pri (int pri = 0)
		1245	PROTOTYPE: ;$
		1246	CODE:
		1247	RETVAL = next_pri;
		1248	if (items > 0)
		1249	{
		1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1252	next_pri = pri;
		1253	}
		1254	OUTPUT:
		1255	RETVAL
		1256
		1257	void
		1258	aioreq_nice (int nice = 0)
		1259	CODE:
		1260	nice = next_pri - nice;
		1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1263	next_pri = nice;
1087		1264
1088	void	1265	void
1089	flush ()	1266	flush ()
1090	PROTOTYPE:	1267	PROTOTYPE:
1091	CODE:	1268	CODE:
1092	while (nreqs)	1269	while (eio_nreqs ())
1093	{	1270	{
1094	poll_wait ();	1271	poll_wait ();
1095	poll_cb ();	1272	poll_cb ();
1096	}	1273	}
1097		1274
1098	void	1275	int
1099	poll()	1276	poll()
1100	PROTOTYPE:	1277	PROTOTYPE:
1101	CODE:	1278	CODE:
1102	if (nreqs)
1103	{
1104	poll_wait ();	1279	poll_wait ();
1105	poll_cb ();	1280	RETVAL = poll_cb ();
1106	}	1281	OUTPUT:
		1282	RETVAL
1107		1283
1108	int	1284	int
1109	poll_fileno()	1285	poll_fileno()
1110	PROTOTYPE:	1286	PROTOTYPE:
1111	CODE:	1287	CODE:
1112	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1113	OUTPUT:	1289	OUTPUT:
1114	RETVAL	1290	RETVAL
1115		1291
1116	int	1292	int
1117	poll_cb(...)	1293	poll_cb(...)
…		…
1123		1299
1124	void	1300	void
1125	poll_wait()	1301	poll_wait()
1126	PROTOTYPE:	1302	PROTOTYPE:
1127	CODE:	1303	CODE:
1128	if (nreqs)
1129	poll_wait ();	1304	poll_wait ();
1130		1305
1131	int	1306	int
1132	nreqs()	1307	nreqs()
1133	PROTOTYPE:	1308	PROTOTYPE:
1134	CODE:	1309	CODE:
1135	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
1136	OUTPUT:	1311	OUTPUT:
1137	RETVAL	1312	RETVAL
1138		1313
		1314	int
		1315	nready()
		1316	PROTOTYPE:
		1317	CODE:
		1318	RETVAL = eio_nready ();
		1319	OUTPUT:
		1320	RETVAL
		1321
		1322	int
		1323	npending()
		1324	PROTOTYPE:
		1325	CODE:
		1326	RETVAL = eio_npending ();
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	int
		1331	nthreads()
		1332	PROTOTYPE:
		1333	CODE:
		1334	RETVAL = eio_nthreads ();
		1335	OUTPUT:
		1336	RETVAL
		1337
		1338	int
		1339	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1340	PROTOTYPE: $$$$
		1341	CODE:
		1342	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1343	RETVAL = posix_fadvise (fh, offset, length, advice);
		1344	#else
		1345	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1346	#endif
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	ssize_t
		1351	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1352	PROTOTYPE: $$$$
		1353	CODE:
		1354	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1355	OUTPUT:
		1356	RETVAL
		1357
		1358	void
		1359	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1360	PROTOTYPE: $$$$$;$
		1361	PPCODE:
		1362	sv_unmagic (scalar, MMAP_MAGIC);
		1363	{
		1364	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1365	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1366	if (addr == (void *)-1)
		1367	XSRETURN_NO;
		1368
		1369	/* we store the length in mg_obj, as namlen is I32 :/ */
		1370	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1371	->mg_obj = (SV *)length;
		1372
		1373	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1374	if (!(prot & PROT_WRITE))
		1375	SvREADONLY_on (scalar);
		1376
		1377	SvPVX (scalar) = (char *)addr;
		1378	SvCUR_set (scalar, length);
		1379	SvLEN_set (scalar, 0);
		1380	SvPOK_only (scalar);
		1381
		1382	XSRETURN_YES;
		1383	}
		1384
		1385	void
		1386	munmap (SV *scalar)
		1387	PROTOTYPE: $
		1388	CODE:
		1389	sv_unmagic (scalar, MMAP_MAGIC);
		1390
		1391	int
		1392	mlockall (int flags)
		1393	PROTOTYPE: $
		1394	CODE:
		1395	#if _POSIX_MEMLOCK
		1396	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1397	extern int mallopt (int, int);
		1398	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1399	#endif
		1400	mlockall (flags);
		1401	#else
		1402	RETVAL = -1;
		1403	errno = ENOSYS;
		1404	#endif
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	munlockall ()
		1410	PROTOTYPE:
		1411	CODE:
		1412	#if _POSIX_MEMLOCK
		1413	munlockall ();
		1414	#else
		1415	RETVAL = -1;
		1416	errno = ENOSYS;
		1417	#endif
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void _on_next_submit (SV *cb)
		1422	CODE:
		1423	SvREFCNT_dec (on_next_submit);
		1424	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1425
		1426	PROTOTYPES: DISABLE
		1427
1139	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140		1429
1141	void	1430	void
1142	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
1143	PROTOTYPE:	1432	CODE:
		1433	eio_cancel (req);
		1434
		1435	void
		1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1144	CODE:	1437	PPCODE:
1145	req->cancelled = 1;	1438	{
		1439	if (GIMME_V != G_VOID)
		1440	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1146		1441
		1442	if (items > 1)
		1443	{
		1444	SV *cb_cv =get_cb (callback);
		1445
		1446	SvREFCNT_dec (req->callback);
		1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
		1450
		1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1452
		1453	void
		1454	add (aio_req grp, ...)
		1455	PPCODE:
		1456	{
		1457	int i;
		1458
		1459	if (grp->int1 == 2)
		1460	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1461
		1462	for (i = 1; i < items; ++i )
		1463	{
		1464	aio_req req;
		1465
		1466	if (GIMME_V != G_VOID)
		1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1468
		1469	req = SvAIO_REQ (ST (i));
		1470
		1471	if (req)
		1472	eio_grp_add (grp, req);
		1473	}
		1474	}
		1475
		1476	void
		1477	cancel_subs (aio_req_ornot req)
		1478	CODE:
		1479	req_cancel_subs (req);
		1480
		1481	void
		1482	result (aio_req grp, ...)
		1483	CODE:
		1484	{
		1485	int i;
		1486	AV *av;
		1487
		1488	grp->errorno = errno;
		1489
		1490	av = newAV ();
		1491	av_extend (av, items - 1);
		1492
		1493	for (i = 1; i < items; ++i )
		1494	av_push (av, newSVsv (ST (i)));
		1495
		1496	SvREFCNT_dec (grp->sv1);
		1497	grp->sv1 = (SV *)av;
		1498	}
		1499
		1500	void
		1501	errno (aio_req grp, int errorno = errno)
		1502	CODE:
		1503	grp->errorno = errorno;
		1504
		1505	void
		1506	limit (aio_req grp, int limit)
		1507	CODE:
		1508	eio_grp_limit (grp, limit);
		1509
		1510	void
		1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1512	CODE:
		1513	{
		1514	SvREFCNT_dec (grp->sv2);
		1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
		1517
		1518	if (grp->int2 <= 0)
		1519	grp->int2 = 2;
		1520
		1521	eio_grp_limit (grp, grp->int2);
		1522	}
		1523

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