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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.46 by root, Sun Oct 22 00:49:29 2006 UTC vs.
Revision 1.209 by root, Sun Apr 1 17:46:02 2012 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/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		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
31	# include <sys/socket.h>	72	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.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
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		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
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		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
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
34	# else	298	# else
35	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	300	# endif
37	#endif	301	#endif
38		302	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	303	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	304	#endif
		305	#ifndef MAP_LOCKED
		306	# define MAP_LOCKED 0
		307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
43		317
44	#if __ia64	318	#ifndef makedev
45	# define STACKSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	320	#endif
47	# define STACKSIZE 8192	321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
		327
		328	#ifndef PAGESIZE
		329	# define PAGESIZE sysconf (_SC_PAGESIZE)
48	#endif	330	#endif
49		331
50	enum {	332	enum {
51	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};	334	};
63		335
64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66
67	typedef struct aio_cb
68	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
93		339
94	static int started, wanted;	340	static SV *on_next_submit;
95	static volatile int nreqs;	341	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	342	static int max_outstanding;
97	static int respipe [2];
98		343
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	344	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		345
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	346	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	347	static void req_cancel (aio_req req);
		348
		349	static void
		350	want_poll (void)
		351	{
		352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
107		362
108	/* must be called at most once */	363	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
110	{	366	{
		367	if (!req->self)
		368	{
111	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		371	}
113		372
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
115	}	374	}
116		375
117	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
118	{	378	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
		384	{
		385	MAGIC *mg;
		386
		387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
120	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
121		393
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		395
124	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	397	}
126		398
127	static void poll_wait ()	399	static aio_wd
		400	SvAIO_WD (SV *sv)
128	{	401	{
129	if (nreqs && !ress)	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
		411	aio_grp_feed (aio_req grp)
		412	{
		413	if (grp->sv2 && SvOK (grp->sv2))
130	{	414	{
131	fd_set rfd;	415	dSP;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		416
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	417	ENTER;
		418	SAVETMPS;
		419	PUSHMARK (SP);
		420	XPUSHs (req_sv (grp, aio_grp_stash));
		421	PUTBACK;
		422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		423	SPAGAIN;
		424	FREETMPS;
		425	LEAVE;
136	}	426	}
137	}	427	}
138		428
139	static void req_invoke (aio_req req)	429	static void
		430	req_submit (eio_req *req)
140	{	431	{
141	dSP;	432	eio_submit (req);
142	int errorno = errno;
143		433
144	if (req->cancelled || !SvOK (req->callback))	434	if (expect_false (on_next_submit))
145	return;
146
147	errno = req->errorno;
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	435	{
154	case REQ_READDIR:	436	dSP;
		437	SV *cb = sv_2mortal (on_next_submit);
		438
		439	on_next_submit = 0;
		440
		441	PUSHMARK (SP);
		442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
		444	}
		445	}
		446
		447	static int
		448	req_invoke (eio_req *req)
		449	{
		450	if (req->flags & FLAG_SV2_RO_OFF)
		451	SvREADONLY_off (req->sv2);
		452
		453	if (!EIO_CANCELLED (req) && req->callback)
		454	{
		455	dSP;
		456	static SV *sv_result_cache; /* caches the result integer SV */
		457	SV *sv_result;
		458
		459	ENTER;
		460	SAVETMPS;
		461	PUSHMARK (SP);
		462	EXTEND (SP, 1);
		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
155	{	466	{
156	SV *rv = &PL_sv_undef;	467	sv_result = sv_result_cache; sv_result_cache = 0;
		468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
		470	}
		471	else
		472	{
		473	sv_result = newSViv (req->result);
		474	SvREADONLY_on (sv_result);
		475	}
157		476
158	if (req->result >= 0)	477	switch (req->type)
		478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
		483	case EIO_READDIR:
159	{	484	{
160	char *buf = req->data2ptr;	485	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		486
163	while (req->result)	487	if (req->result >= 0)
164	{	488	{
		489	int i;
		490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
165	SV *sv = newSVpv (buf, 0);	492	AV *av = newAV ();
166		493
167	av_push (av, sv);	494	av_extend (av, req->result - 1);
		495
		496	for (i = 0; i < req->result; ++i)
		497	{
		498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
		522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
168	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
169	req->result--;	531	}
		532	}
		533
		534	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	535	}
171		536
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
173	}	541	}
		542	break;
174		543
		544	case EIO_OPEN:
		545	{
		546	/* convert fd to fh */
		547	SV *fh = &PL_sv_undef;
		548
		549	if (req->result >= 0)
		550	{
		551	GV *gv = (GV *)sv_newmortal ();
		552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
		558
		559	symlen = snprintf (
		560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
		571	PUSHs (fh);
		572	}
		573	break;
		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
175	XPUSHs (rv);	602	PUSHs (rv);
		603	}
		604
		605	break;
		606
		607	case EIO_GROUP:
		608	req->int1 = 2; /* mark group as finished */
		609
		610	if (req->sv1)
		611	{
		612	int i;
		613	AV *av = (AV *)req->sv1;
		614
		615	EXTEND (SP, AvFILL (av) + 1);
		616	for (i = 0; i <= AvFILL (av); ++i)
		617	PUSHs (*av_fetch (av, i, 0));
		618	}
		619	break;
		620
		621	case EIO_NOP:
		622	case EIO_BUSY:
		623	break;
		624
		625	case EIO_READLINK:
		626	case EIO_REALPATH:
		627	if (req->result > 0)
		628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		629	break;
		630
		631	case EIO_STAT:
		632	case EIO_LSTAT:
		633	case EIO_FSTAT:
		634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
		636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
		640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_SEEK:
		644	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		645	break;
		646
		647	case EIO_READ:
		648	{
		649	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		650	*SvEND (req->sv2) = 0;
		651	SvPOK_only (req->sv2);
		652	SvSETMAGIC (req->sv2);
		653	PUSHs (sv_result);
		654	}
		655	break;
		656
		657	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		658	if (req->result > 0)
		659	SvIV_set (sv_result, 0);
		660	/* FALLTHROUGH */
		661
		662	default:
		663	PUSHs (sv_result);
		664	break;
176	}	665	}
177	break;
178		666
179	case REQ_OPEN:	667	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		668
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	669	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
187	SPAGAIN;	671	SPAGAIN;
188		672
189	fh = SvREFCNT_inc (POPs);	673	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		674	SvREFCNT_dec (sv_result);
		675	else
		676	sv_result_cache = sv_result;
190		677
191	PUSHMARK (SP);	678	FREETMPS;
192	XPUSHs (sv_2mortal (fh));	679	LEAVE;
193	}
194	break;
195		680
196	case REQ_SLEEP:	681	PUTBACK;
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	682	}
204		683
205		684	return !!SvTRUE (ERRSV);
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	685	}
220		686
221	static void req_free (aio_req req)	687	static void
		688	req_destroy (aio_req req)
222	{	689	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	690	if (req->self)
239	{	691	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
242	}	694	}
243		695
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	696	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	697	SvREFCNT_dec (req->sv2);
252		698	SvREFCNT_dec (req->sv3);
253	if (req->statdata)	699	SvREFCNT_dec (req->sv4);
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
258		701
259	if (req->type == REQ_READDIR && req->result >= 0)
260	free (req->data2ptr);
261
262	Safefree (req);	702	free (req);
263	}	703	}
264		704
265	static void req_cancel (aio_req req)	705	static void
		706	req_cancel_subs (aio_req grp)
266	{	707	{
267	req->cancelled = 1;
268
269	if (req->type == REQ_GROUP)	708	if (grp->type != EIO_GROUP)
		709	return;
		710
		711	SvREFCNT_dec (grp->sv2);
		712	grp->sv2 = 0;
		713
		714	eio_grp_cancel (grp);
		715	}
		716
		717	static void ecb_cold
		718	create_respipe (void)
		719	{
		720	if (s_epipe_renew (&respipe))
		721	croak ("IO::AIO: unable to initialize result pipe");
		722	}
		723
		724	static void
		725	poll_wait (void)
		726	{
		727	while (eio_nreqs ())
270	{	728	{
271	aio_req sub;	729	int size;
272		730
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	731	X_LOCK (reslock);
274	req_cancel (sub);	732	size = res_queue.size;
		733	X_UNLOCK (reslock);
		734
		735	if (size)
		736	return;
		737
		738	etp_maybe_start_thread ();
		739
		740	s_epipe_wait (&respipe);
275	}	741	}
276	}	742	}
277		743
278	static int poll_cb ()	744	static int
		745	poll_cb (void)
279	{	746	{
280	dSP;
281	int count = 0;
282	int do_croak = 0;
283	aio_req req;
284
285	for (;;)	747	for (;;)
286	{	748	{
287	pthread_mutex_lock (&reslock);	749	int res = eio_poll ();
288	req = ress;
289		750
290	if (req)	751	if (res > 0)
		752	croak (0);
		753
		754	if (!max_outstanding || max_outstanding > eio_nreqs ())
		755	return res;
		756
		757	poll_wait ();
		758	}
		759	}
		760
		761	static void ecb_cold
		762	reinit (void)
		763	{
		764	create_respipe ();
		765
		766	if (eio_init (want_poll, done_poll) < 0)
		767	croak ("IO::AIO: unable to initialise eio library");
		768	}
		769
		770	/*****************************************************************************/
		771
		772	#if !_POSIX_MAPPED_FILES
		773	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		774	# define munmap(addr,length) (errno = ENOSYS, -1)
		775	#endif
		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
		786	#define MMAP_MAGIC PERL_MAGIC_ext
		787
		788	static int ecb_cold
		789	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		790	{
		791	int old_errno = errno;
		792	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		793	errno = old_errno;
		794
		795	mg->mg_obj = 0; /* just in case */
		796
		797	SvREADONLY_off (sv);
		798
		799	if (SvPVX (sv) != mg->mg_ptr)
		800	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		801
		802	SvCUR_set (sv, 0);
		803	SvPVX (sv) = 0;
		804	SvOK_off (sv);
		805
		806	return 0;
		807	}
		808
		809	static MGVTBL mmap_vtbl = {
		810	0, 0, 0, 0, mmap_free
		811	};
		812
		813	/*****************************************************************************/
		814
		815	static SV *
		816	get_cb (SV *cb_sv)
		817	{
		818	SvGETMAGIC (cb_sv);
		819	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		820	}
		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
		842	#define dREQ \
		843	aio_req req = dreq (callback); \
		844
		845	#define REQ_SEND \
		846	PUTBACK; \
		847	req_submit (req); \
		848	SPAGAIN; \
		849	\
		850	if (GIMME_V != G_VOID) \
		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)
291	{	862	{
292	ress = req->next;	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
293		865
294	if (!ress)	866	if (SvOK (wdob))
295	{	867	{
296	/* read any signals sent by the worker threads */	868	*wd = SvAIO_WD (wdob);
297	char buf [32];	869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
298	while (read (respipe [0], buf, 32) == 32)
299	;
300
301	rese = 0;
302	}	870	}
		871	else
		872	*wd = EIO_INVALID_WD;
303	}	873	}
304		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
305	pthread_mutex_unlock (&reslock);
306
307	if (!req)
308	break;
309
310	nreqs--;
311
312	if (req->type == REQ_QUIT)
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{	875	{
316	req->fd = 1; /* mark request as delayed */	876	*wd = (aio_wd)(long)SvIVX (rv);
317	continue;	877	*wdsv = SvREFCNT_inc_NN (rv);
		878	*ptr = ".";
		879	return; /* path set to "." */
318	}	880	}
319	else	881	else
320	{	882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	883	}
341		884
342	return count;	885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
343	}	887	}
344		888
345	static void *aio_proc(void *arg);	889	static void ecb_noinline
346		890	req_set_path1 (aio_req req, SV *path)
347	static void start_thread (void)
348	{	891	{
349	sigset_t fullsigset, oldsigset;	892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}	893	}
365		894
366	static void req_send (aio_req req)	895	static void ecb_noinline
		896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
367	{	897	{
368	while (started < wanted && nreqs >= started)	898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
369	start_thread ();
370		899
371	nreqs++;	900	switch (SvTYPE (rv))
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{	901	{
379	reqe->next = req;	902	case SVt_PVIO:
380	reqe = req;	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;
381	}	914	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}	915	}
399		916
400	static void end_thread (void)	917	XS(boot_IO__AIO) ecb_cold;
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405		918
406	req_send (req);	919	MODULE = IO::AIO PACKAGE = IO::AIO
407	}
408		920
409	static void min_parallel (int nthreads)	921	PROTOTYPES: ENABLE
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414		922
415	static void max_parallel (int nthreads)	923	BOOT:
416	{	924	{
417	int cur = started;	925	static const struct {
		926	const char *name;
		927	IV iv;
		928	} *civ, const_iv[] = {
		929	# define const_niv(name, value) { # name, (IV) value },
		930	# define const_iv(name) { # name, (IV) name },
		931	# define const_eio(name) { # name, (IV) EIO_ ## name },
		932	const_iv (EXDEV)
		933	const_iv (ENOSYS)
		934	const_iv (O_RDONLY)
		935	const_iv (O_WRONLY)
		936	const_iv (O_RDWR)
		937	const_iv (O_CREAT)
		938	const_iv (O_TRUNC)
		939	const_iv (O_EXCL)
		940	const_iv (O_APPEND)
418		941
419	if (wanted > nthreads)	942	const_iv (O_ASYNC)
420	wanted = nthreads;	943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
421		945
422	while (cur > wanted)	946	const_iv (O_CLOEXEC)
423	{	947	const_iv (O_NOCTTY)
424	end_thread ();	948	const_iv (O_NOFOLLOW)
425	cur--;	949	const_iv (O_NONBLOCK)
426	}	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)
427		957
428	while (started > wanted)	958	const_iv (S_IFIFO)
429	{	959	const_iv (S_IFCHR)
430	poll_wait ();	960	const_iv (S_IFBLK)
431	poll_cb ();	961	const_iv (S_IFLNK)
432	}	962	const_iv (S_IFREG)
433	}	963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
434		967
435	static void create_pipe ()	968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
436	{	969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
437	if (pipe (respipe))	970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
438	croak ("unable to initialize result pipe");	971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
439		974
440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
441	croak ("cannot set result pipe to nonblocking mode");	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)
442		980
443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	981	const_iv (ST_RDONLY)
444	croak ("cannot set result pipe to nonblocking mode");	982	const_iv (ST_NOSUID)
445	}	983	const_iv (ST_NODEV)
		984	const_iv (ST_NOEXEC)
		985	const_iv (ST_SYNCHRONOUS)
		986	const_iv (ST_MANDLOCK)
		987	const_iv (ST_WRITE)
		988	const_iv (ST_APPEND)
		989	const_iv (ST_IMMUTABLE)
		990	const_iv (ST_NOATIME)
		991	const_iv (ST_NODIRATIME)
		992	const_iv (ST_RELATIME)
446		993
447	/*****************************************************************************/	994	const_iv (PROT_NONE)
448	/* work around various missing functions */	995	const_iv (PROT_EXEC)
		996	const_iv (PROT_READ)
		997	const_iv (PROT_WRITE)
449		998
450	#if !HAVE_PREADWRITE	999	/*const_iv (MAP_FIXED)*/
451	# define pread aio_pread	1000	const_iv (MAP_PRIVATE)
452	# define pwrite aio_pwrite	1001	const_iv (MAP_SHARED)
		1002	const_iv (MAP_ANONYMOUS)
453		1003
454	/*	1004	/* linuxish */
455	* make our pread/pwrite safe against themselves, but not against	1005	const_iv (MAP_HUGETLB)
456	* normal read/write by using a mutex. slows down execution a lot,	1006	const_iv (MAP_LOCKED)
457	* but that's your problem, not mine.	1007	const_iv (MAP_NORESERVE)
458	*/	1008	const_iv (MAP_POPULATE)
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	1009	const_iv (MAP_NONBLOCK)
460		1010
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1011	const_eio (SEEK_SET)
462	{	1012	const_eio (SEEK_CUR)
463	ssize_t res;	1013	const_eio (SEEK_END)
464	off_t ooffset;
465		1014
466	pthread_mutex_lock (&preadwritelock);	1015	const_eio (MCL_FUTURE)
467	ooffset = lseek (fd, 0, SEEK_CUR);	1016	const_eio (MCL_CURRENT)
468	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);
472		1017
473	return res;	1018	const_eio (MS_ASYNC)
474	}	1019	const_eio (MS_INVALIDATE)
		1020	const_eio (MS_SYNC)
475		1021
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1022	const_eio (MT_MODIFY)
477	{
478	ssize_t res;
479	off_t ooffset;
480		1023
481	pthread_mutex_lock (&preadwritelock);	1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
482	ooffset = lseek (fd, 0, SEEK_CUR);	1025	const_eio (SYNC_FILE_RANGE_WRITE)
483	lseek (fd, offset, SEEK_SET);	1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
484	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);
487		1027
488	return res;	1028	const_eio (FALLOC_FL_KEEP_SIZE)
489	}
490	#endif
491		1029
492	#if !HAVE_FDATASYNC	1030	const_eio (READDIR_DENTS)
493	# define fdatasync fsync	1031	const_eio (READDIR_DIRS_FIRST)
494	#endif	1032	const_eio (READDIR_STAT_ORDER)
		1033	const_eio (READDIR_FOUND_UNKNOWN)
495		1034
496	#if !HAVE_READAHEAD	1035	const_eio (DT_UNKNOWN)
497	# define readahead aio_readahead	1036	const_eio (DT_FIFO)
498		1037	const_eio (DT_CHR)
499	static ssize_t readahead (int fd, off_t offset, size_t count)	1038	const_eio (DT_DIR)
500	{	1039	const_eio (DT_BLK)
501	char readahead_buf[4096];	1040	const_eio (DT_REG)
502		1041	const_eio (DT_LNK)
503	while (count > 0)	1042	const_eio (DT_SOCK)
504	{	1043	const_eio (DT_WHT)
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
506
507	pread (fd, readahead_buf, len, offset);
508	offset += len;
509	count -= len;
510	}
511
512	errno = 0;
513	}
514	#endif
515
516	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r
518
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
520
521	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
522	{
523	struct dirent *e;
524	int errorno;
525
526	pthread_mutex_lock (&readdirlock);
527
528	e = readdir (dirp);
529	errorno = errno;
530
531	if (e)
532	{
533	*res = ent;
534	strcpy (ent->d_name, e->d_name);
535	}
536	else
537	*res = 0;
538
539	pthread_mutex_unlock (&readdirlock);
540
541	errno = errorno;
542	return e ? 0 : -1;
543	}
544	#endif
545
546	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
548	{
549	ssize_t res;
550
551	if (!count)
552	return 0;
553
554	#if HAVE_SENDFILE
555	# if __linux
556	res = sendfile (ofd, ifd, &offset, count);
557
558	# elif __freebsd
559	/*
560	* Of course, the freebsd sendfile is a dire hack with no thoughts
561	* wasted on making it similar to other I/O functions.
562	*/
563	{
564	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566
567	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
569	res = sbytes;
570	}	1044	};
571		1045
572	# elif __hpux	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
574		1050
575	# elif __solaris	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
576	{	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
577	struct sendfilevec vec;
578	size_t sbytes;
579		1053
580	vec.sfv_fd = ifd;	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
581	vec.sfv_flag = 0;
582	vec.sfv_off = offset;
583	vec.sfv_len = count;
584		1055
585	res = sendfilev (ofd, &vec, 1, &sbytes);	1056	reinit ();
		1057	}
586		1058
587	if (res < 0 && sbytes)	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
		1064	max_poll_reqs (unsigned int nreqs)
		1065	PROTOTYPE: $
		1066	CODE:
		1067	eio_set_max_poll_reqs (nreqs);
		1068
		1069	void
		1070	max_poll_time (double nseconds)
		1071	PROTOTYPE: $
		1072	CODE:
		1073	eio_set_max_poll_time (nseconds);
		1074
		1075	void
		1076	min_parallel (unsigned int nthreads)
		1077	PROTOTYPE: $
		1078	CODE:
		1079	eio_set_min_parallel (nthreads);
		1080
		1081	void
		1082	max_parallel (unsigned int nthreads)
		1083	PROTOTYPE: $
		1084	CODE:
		1085	eio_set_max_parallel (nthreads);
		1086
		1087	void
		1088	max_idle (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_max_idle (nthreads);
		1092
		1093	void
		1094	idle_timeout (unsigned int seconds)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_idle_timeout (seconds);
		1098
		1099	void
		1100	max_outstanding (unsigned int maxreqs)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	max_outstanding = maxreqs;
		1104
		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
		1118	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
		1123	req->type = EIO_OPEN;
		1124	req_set_path1 (req, pathname);
		1125	req->int1 = flags;
		1126	req->int2 = mode;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1133	ALIAS:
		1134	aio_fsync = EIO_FSYNC
		1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
		1137	PPCODE:
		1138	{
		1139	int fd = s_fileno_croak (fh, 0);
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (fh);
		1144	req->int1 = fd;
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int fd = s_fileno_croak (fh, 0);
		1154	dREQ;
		1155
		1156	req->type = EIO_SYNC_FILE_RANGE;
		1157	req->sv1 = newSVsv (fh);
		1158	req->int1 = fd;
		1159	req->offs = offset;
588	res = sbytes;	1160	req->size = nbytes;
589	}	1161	req->int2 = flags;
590		1162
591	# endif	1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		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))
		1192	{
		1193	int pipefd [2];
		1194
		1195	if (
		1196	#ifdef _WIN32
		1197	_pipe (pipefd, 1, _O_BINARY) < 0
592	#else	1198	#else
593	res = -1;	1199	pipe (pipefd) < 0
594	errno = ENOSYS;	1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
595	#endif	1201	#endif
596		1202	|| close (pipefd [1]) < 0
597	if (res < 0
598	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
599	#if __solaris
600	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
601	#endif
602	)
603	)
604	{
605	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];
607	res = 0;
608
609	while (count)
610	{
611	ssize_t cnt;
612
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
614
615	if (cnt <= 0)
616	{	1203	)
617	if (cnt && !res) res = -1;	1204	abort (); /*D*/
618	break;
619	}
620		1205
621	cnt = write (ofd, buf, cnt);	1206	close_fd = pipefd [0];
622
623	if (cnt <= 0)
624	{
625	if (cnt && !res) res = -1;
626	break;
627	}
628
629	offset += cnt;
630	res += cnt;
631	count -= cnt;
632	}
633	}
634
635	return res;
636	}
637
638	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)
640	{
641	DIR *dirp = opendir (path);
642	union
643	{
644	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;
647	struct dirent *entp;
648	char *name, *names;
649	int memlen = 4096;
650	int memofs = 0;
651	int res = 0;
652	int errorno;
653
654	if (!dirp)
655	return -1;
656
657	names = malloc (memlen);
658
659	for (;;)
660	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);
662
663	if (!entp)
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696
697	*namesp = (void *)names;
698	return res;
699	}
700
701	/*****************************************************************************/
702
703	static void *aio_proc (void *thr_arg)
704	{
705	aio_req req;
706	int type;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711
712	for (;;)
713	{
714	req = reqs;
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721
722	if (req)
723	break;
724
725	pthread_cond_wait (&reqwait, &reqlock);
726	}
727
728	pthread_mutex_unlock (&reqlock);
729
730	errno = 0; /* strictly unnecessary */
731
732	if (!req->cancelled)
733	switch (req->type)
734	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
737
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
740
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
756
757	case REQ_SLEEP:
758	{
759	struct timeval tv;
760
761	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;
763
764	req->result = select (0, 0, 0, 0, &tv);
765	}
766
767	case REQ_QUIT:
768	break;
769
770	default:
771	req->result = ENOSYS;
772	break;
773	}	1207	}
774		1208
775	req->errorno = errno;	1209	req->type = EIO_DUP2;
776		1210	req->int1 = close_fd;
777	pthread_mutex_lock (&reslock);	1211	req->sv2 = newSVsv (fh);
778
779	req->next = 0;	1212	req->int2 = fd;
780		1213
781	if (rese)	1214	REQ_SEND;
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);
792	}
793
794	pthread_mutex_unlock (&reslock);
795	}
796	while (type != REQ_QUIT);
797
798	return 0;
799	}	1215	}
800		1216
801	/*****************************************************************************/
802
803	static void atfork_prepare (void)
804	{
805	pthread_mutex_lock (&reqlock);
806	pthread_mutex_lock (&reslock);
807	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);
809	#endif
810	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);
812	#endif
813	}
814
815	static void atfork_parent (void)
816	{
817	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);
819	#endif
820	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);
822	#endif
823	pthread_mutex_unlock (&reslock);
824	pthread_mutex_unlock (&reqlock);
825	}
826
827	static void atfork_child (void)
828	{
829	aio_req prv;
830
831	started = 0;
832
833	while (reqs)
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);
838	}
839
840	reqs = reqe = 0;
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850
851	close (respipe [0]);
852	close (respipe [1]);
853	create_pipe ();
854
855	atfork_parent ();
856	}
857
858	#define dREQ \
859	aio_req req; \
860	\
861	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \
863	\
864	Newz (0, req, 1, aio_cb); \
865	if (!req) \
866	croak ("out of memory during aio_req allocation"); \
867	\
868	req->callback = newSVsv (callback)
869
870	#define REQ_SEND \
871	req_send (req); \
872	\
873	if (GIMME_V != G_VOID) \
874	XPUSHs (req_sv (req, AIO_REQ_KLASS));
875
876	MODULE = IO::AIO PACKAGE = IO::AIO
877
878	PROTOTYPES: ENABLE
879
880	BOOT:
881	{
882	HV *stash = gv_stashpv ("IO::AIO", 1);
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
886
887	create_pipe ();
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
889	}
890
891	void	1217	void
892	min_parallel (nthreads)	1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
893	int nthreads
894	PROTOTYPE: $
895
896	void
897	max_parallel (nthreads)
898	int nthreads
899	PROTOTYPE: $
900
901	int
902	max_outstanding (nreqs)
903	int nreqs
904	PROTOTYPE: $
905	CODE:	1219	PPCODE:
906	RETVAL = max_outstanding;
907	max_outstanding = nreqs;
908
909	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$
916	PPCODE:
917	{	1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
918	dREQ;	1223	dREQ;
919		1224
920	req->type = REQ_OPEN;	1225	req->type = EIO_SEEK;
921	req->data = newSVsv (pathname);	1226	req->sv1 = newSVsv (fh);
922	req->dataptr = SvPVbyte_nolen (req->data);	1227	req->int1 = fd;
923	req->fd = flags;	1228	req->offs = SvVAL64 (offset);
924	req->mode = mode;	1229	req->int2 = whence;
925		1230
926	REQ_SEND;	1231	REQ_SEND;
927	}	1232	}
928		1233
929	void	1234	void
930	aio_close (fh,callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$
934	ALIAS:	1236	ALIAS:
935	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC
937	aio_fdatasync = REQ_FDATASYNC
938	PPCODE:
939	{
940	dREQ;
941
942	req->type = ix;
943	req->fh = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
945
946	REQ_SEND (req);
947	}
948
949	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:
958	aio_read = REQ_READ	1237	aio_read = EIO_READ
959	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
960	PROTOTYPE: $$$$$;$
961	PPCODE:	1239	PPCODE:
962	{	1240	{
963	aio_req req;
964	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
965	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
966		1244	UV len = SvUV (length);
967	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);
969		1245
970	if (dataoffset < 0)	1246	if (dataoffset < 0)
971	dataoffset += svlen;	1247	dataoffset += svlen;
972		1248
973	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
975		1251
976	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
977	{	1253	{
978	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
981	}	1257	}
982	else	1258	else
983	{	1259	{
984	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
985	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1263	}
987
988	if (length < 0)
989	croak ("length must not be negative");
990		1264
991	{	1265	{
992	dREQ;	1266	dREQ;
993		1267
994	req->type = ix;	1268	req->type = ix;
995	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
997	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1272	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
		1275	req->stroffset = dataoffset;
1002		1276
1003	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1004	{	1278	{
1005	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1280	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1281	}
1008		1282
1009	REQ_SEND;	1283	REQ_SEND;
1010	}	1284	}
1011	}	1285	}
1012		1286
1013	void	1287	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1015	SV * out_fh	1289	ALIAS:
1016	SV * in_fh	1290	aio_readlink = EIO_READLINK
1017	UV in_offset	1291	aio_realpath = EIO_REALPATH
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$
1021	PPCODE:	1292	PPCODE:
1022	{	1293	{
		1294	dREQ;
		1295
		1296	req->type = ix;
		1297	req_set_path1 (req, pathname);
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
		1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1304	PPCODE:
		1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1023	dREQ;	1308	dREQ;
1024		1309
1025	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1028	req->fh2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1030	req->offset = in_offset;	1315	req->offs = in_offset;
1031	req->length = length;	1316	req->size = length;
1032		1317
1033	REQ_SEND;	1318	REQ_SEND;
1034	}	1319	}
1035		1320
1036	void	1321	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$
1043	PPCODE:	1323	PPCODE:
1044	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1045	dREQ;	1326	dREQ;
1046		1327
1047	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1048	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1050	req->offset = offset;	1331	req->offs = offset;
1051	req->length = length;	1332	req->size = length;
1052		1333
1053	REQ_SEND;	1334	REQ_SEND;
1054	}	1335	}
1055		1336
1056	void	1337	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1339	ALIAS:
1061	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1062	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1063	PPCODE:	1343	PPCODE:
1064	{	1344	{
1065	dREQ;	1345	dREQ;
1066		1346
1067	New (0, req->statdata, 1, Stat_t);	1347	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1068	if (!req->statdata)
1069	{
1070	req_free (req);
1071	croak ("out of memory during aio_req->statdata allocation");
1072	}
1073
1074	if (SvPOK (fh_or_path))
1075	{
1076	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);
1079	}
1080	else
1081	{
1082	req->type = REQ_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}
1086		1348
1087	REQ_SEND;	1349	REQ_SEND;
1088	}	1350	}
1089		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
		1367
1090	void	1368	void
		1369	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1375	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1376	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1377
		1378	REQ_SEND;
		1379	}
		1380
		1381	void
		1382	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1388	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->int2 = mode;
		1400	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1412	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1413	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	dREQ;
		1423
		1424	req->type = EIO_READDIR;
		1425	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1426
		1427	if (flags & EIO_READDIR_DENTS)
		1428	req->int1 |= EIO_READDIR_CUSTOM2;
		1429
		1430	req_set_path1 (req, pathname);
		1431
		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;
		1446	}
		1447
		1448	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1450	ALIAS:
1095	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1096	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1097	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1098	PPCODE:	1454	PPCODE:
1099	{	1455	{
1100	dREQ;	1456	dREQ;
1101		1457
1102	req->type = ix;	1458	req->type = ix;
1103	req->data = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1460
1105
1106	REQ_SEND;	1461	REQ_SEND;
1107	}	1462	}
1108		1463
1109	void	1464	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1466	ALIAS:
1115	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1116	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1117	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1118	PPCODE:	1470	PPCODE:
1119	{	1471	{
		1472	eio_wd wd2 = 0;
1120	dREQ;	1473	dREQ;
1121		1474
1122	req->type = ix;	1475	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1125	req->data = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1126	req->dataptr = SvPVbyte_nolen (req->data);
1127		1479
1128	REQ_SEND;	1480	REQ_SEND;
1129	}	1481	}
1130		1482
1131	void	1483	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1485	PPCODE:
1136	{	1486	{
1137	dREQ;	1487	dREQ;
1138		1488
1139	req->type = REQ_SLEEP;	1489	req->type = EIO_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1490	req->int2 = (mode_t)mode;
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1491	req->offs = dev;
1142		1492	req_set_path1 (req, pathname);
		1493
1143	REQ_SEND;	1494	REQ_SEND;
1144	}	1495	}
1145		1496
1146	void	1497	void
1147	aio_group (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)
1148	SV * callback	1499	ALIAS:
1149	PROTOTYPE: ;$	1500	aio_mtouch = EIO_MTOUCH
		1501	aio_msync = EIO_MSYNC
1150	PPCODE:	1502	PPCODE:
1151	{	1503	{
		1504	STRLEN svlen;
		1505	char *svptr = SvPVbyte (data, svlen);
		1506	UV len = SvUV (length);
		1507
		1508	if (offset < 0)
		1509	offset += svlen;
		1510
		1511	if (offset < 0 || offset > svlen)
		1512	croak ("offset outside of scalar");
		1513
		1514	if (!SvOK (length) || len + offset > svlen)
		1515	len = svlen - offset;
		1516
		1517	{
		1518	dREQ;
		1519
		1520	req->type = ix;
		1521	req->sv2 = SvREFCNT_inc (data);
		1522	req->ptr2 = (char *)svptr + offset;
		1523	req->size = len;
		1524	req->int1 = flags;
		1525
		1526	REQ_SEND;
		1527	}
		1528	}
		1529
		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
		1572	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1573	PPCODE:
		1574	{
1152	dREQ;	1575	dREQ;
		1576
		1577	req->type = EIO_BUSY;
		1578	req->nv1 = delay < 0. ? 0. : delay;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_group (SV *callback=&PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	dREQ;
		1588
1153	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1590
1157	req_send (req);	1591	req_submit (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1159	}	1593	}
		1594
		1595	void
		1596	aio_nop (SV *callback=&PL_sv_undef)
		1597	ALIAS:
		1598	aio_nop = EIO_NOP
		1599	aio_sync = EIO_SYNC
		1600	PPCODE:
		1601	{
		1602	dREQ;
		1603
		1604	req->type = ix;
		1605
		1606	REQ_SEND;
		1607	}
		1608
		1609	int
		1610	aioreq_pri (int pri = 0)
		1611	CODE:
		1612	RETVAL = next_pri;
		1613	if (items > 0)
		1614	{
		1615	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1616	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1617	next_pri = pri;
		1618	}
		1619	OUTPUT:
		1620	RETVAL
		1621
		1622	void
		1623	aioreq_nice (int nice = 0)
		1624	CODE:
		1625	nice = next_pri - nice;
		1626	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1627	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1628	next_pri = nice;
1160		1629
1161	void	1630	void
1162	flush ()	1631	flush ()
1163	PROTOTYPE:
1164	CODE:	1632	CODE:
1165	while (nreqs)	1633	while (eio_nreqs ())
1166	{	1634	{
1167	poll_wait ();	1635	poll_wait ();
1168	poll_cb ();	1636	poll_cb ();
1169	}	1637	}
1170		1638
1171	void	1639	int
1172	poll()	1640	poll ()
1173	PROTOTYPE:
1174	CODE:	1641	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1642	poll_wait ();
1178	poll_cb ();	1643	RETVAL = poll_cb ();
1179	}
1180
1181	int
1182	poll_fileno()
1183	PROTOTYPE:
1184	CODE:
1185	RETVAL = respipe [0];
1186	OUTPUT:	1644	OUTPUT:
1187	RETVAL	1645	RETVAL
1188		1646
1189	int	1647	int
		1648	poll_fileno ()
		1649	CODE:
		1650	RETVAL = s_epipe_fd (&respipe);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	int
1190	poll_cb(...)	1655	poll_cb (...)
1191	PROTOTYPE:	1656	PROTOTYPE:
1192	CODE:	1657	CODE:
1193	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1194	OUTPUT:	1659	OUTPUT:
1195	RETVAL	1660	RETVAL
1196		1661
1197	void	1662	void
1198	poll_wait()	1663	poll_wait ()
1199	PROTOTYPE:
1200	CODE:	1664	CODE:
1201	if (nreqs)
1202	poll_wait ();	1665	poll_wait ();
1203		1666
1204	int	1667	int
1205	nreqs()	1668	nreqs ()
1206	PROTOTYPE:
1207	CODE:	1669	CODE:
1208	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1209	OUTPUT:	1671	OUTPUT:
1210	RETVAL	1672	RETVAL
1211		1673
		1674	int
		1675	nready ()
		1676	CODE:
		1677	RETVAL = eio_nready ();
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	int
		1682	npending ()
		1683	CODE:
		1684	RETVAL = eio_npending ();
		1685	OUTPUT:
		1686	RETVAL
		1687
		1688	int
		1689	nthreads ()
		1690	CODE:
		1691	RETVAL = eio_nthreads ();
		1692	OUTPUT:
		1693	RETVAL
		1694
		1695	int
		1696	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1697	CODE:
		1698	RETVAL = posix_fadvise (fh, offset, length, advice);
		1699	OUTPUT:
		1700	RETVAL
		1701
		1702	IV
		1703	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1704	CODE:
		1705	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	void
		1710	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1711	PPCODE:
		1712	sv_unmagic (scalar, MMAP_MAGIC);
		1713	{
		1714	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1715	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1716	if (addr == (void *)-1)
		1717	XSRETURN_NO;
		1718
		1719	sv_force_normal (scalar);
		1720
		1721	/* we store the length in mg_obj, as namlen is I32 :/ */
		1722	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1723	->mg_obj = (SV *)length;
		1724
		1725	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1726
		1727	if (!(prot & PROT_WRITE))
		1728	SvREADONLY_on (scalar);
		1729
		1730	if (SvLEN (scalar))
		1731	Safefree (SvPVX (scalar));
		1732
		1733	SvPVX (scalar) = (char *)addr;
		1734	SvCUR_set (scalar, length);
		1735	SvLEN_set (scalar, 0);
		1736	SvPOK_only (scalar);
		1737
		1738	XSRETURN_YES;
		1739	}
		1740
		1741	void
		1742	munmap (SV *scalar)
		1743	CODE:
		1744	sv_unmagic (scalar, MMAP_MAGIC);
		1745
		1746	int
		1747	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1748	ALIAS:
		1749	mprotect = 1
		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);
		1796	#if _POSIX_MEMLOCK_RANGE
		1797	RETVAL = munlock (addr, len);
		1798	#else
		1799	RETVAL = ((errno = ENOSYS), -1);
		1800	#endif
		1801	}
		1802	OUTPUT:
		1803	RETVAL
		1804
		1805	int
		1806	munlockall ()
		1807	CODE:
		1808	#if _POSIX_MEMLOCK
		1809	munlockall ();
		1810	#else
		1811	RETVAL = -1;
		1812	errno = ENOSYS;
		1813	#endif
		1814	OUTPUT:
		1815	RETVAL
		1816
		1817	void _on_next_submit (SV *cb)
		1818	CODE:
		1819	SvREFCNT_dec (on_next_submit);
		1820	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1821
		1822	PROTOTYPES: DISABLE
		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
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1853
1214	void	1854	void
1215	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1856	CODE:
1218	req_cancel (req);	1857	eio_cancel (req);
		1858
		1859	void
		1860	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1861	PPCODE:
		1862	{
		1863	if (GIMME_V != G_VOID)
		1864	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1865
		1866	if (items > 1)
		1867	{
		1868	SV *cb_cv =get_cb (callback);
		1869
		1870	SvREFCNT_dec (req->callback);
		1871	req->callback = SvREFCNT_inc (cb_cv);
		1872	}
		1873	}
1219		1874
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1876
1222	void	1877	void
1223	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1879	PPCODE:
1226	{	1880	{
1227	int i;	1881	int i;
		1882
		1883	if (grp->int1 == 2)
		1884	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		1885
1229	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1230	{	1887	{
		1888	aio_req req;
		1889
1231	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1892
1234	aio_req req = SvAIO_REQ (ST (i));	1893	req = SvAIO_REQ (ST (i));
1235	printf ("req = %p\n", req);//D
1236		1894
1237	if (req)	1895	if (req)
1238	{	1896	eio_grp_add (grp, req);
1239	req->grp_prev = grp;
1240	req->grp_next = grp->grp_next;
1241	grp->grp_next->grp_prev = req;
1242	grp->grp_next = req;
1243
1244	req->grp = grp;
1245	}
1246	}	1897	}
1247	}	1898	}
1248		1899
		1900	void
		1901	cancel_subs (aio_req_ornot req)
		1902	CODE:
		1903	req_cancel_subs (req);
		1904
		1905	void
		1906	result (aio_req grp, ...)
		1907	CODE:
		1908	{
		1909	int i;
		1910	AV *av;
		1911
		1912	grp->errorno = errno;
		1913
		1914	av = newAV ();
		1915	av_extend (av, items - 1);
		1916
		1917	for (i = 1; i < items; ++i )
		1918	av_push (av, newSVsv (ST (i)));
		1919
		1920	SvREFCNT_dec (grp->sv1);
		1921	grp->sv1 = (SV *)av;
		1922	}
		1923
		1924	void
		1925	errno (aio_req grp, int errorno = errno)
		1926	CODE:
		1927	grp->errorno = errorno;
		1928
		1929	void
		1930	limit (aio_req grp, int limit)
		1931	CODE:
		1932	eio_grp_limit (grp, limit);
		1933
		1934	void
		1935	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1936	CODE:
		1937	{
		1938	SvREFCNT_dec (grp->sv2);
		1939	grp->sv2 = newSVsv (callback);
		1940	grp->feed = aio_grp_feed;
		1941
		1942	if (grp->int2 <= 0)
		1943	grp->int2 = 2;
		1944
		1945	eio_grp_limit (grp, grp->int2);
		1946	}
		1947

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