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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.51 by root, Sun Oct 22 22:14:33 2006 UTC vs.
Revision 1.198 by root, Tue Sep 27 02:16:49 2011 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	#else
		68
31	# include <sys/socket.h>	69	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
34	# else	295	# else
35	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	297	# endif
37	#endif	298	#endif
38		299	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
43		314
44	#if __ia64	315	#ifndef makedev
45	# define STACKSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	317	#endif
47	# define STACKSIZE 8192	318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
		324
		325	#ifndef PAGESIZE
		326	# define PAGESIZE sysconf (_SC_PAGESIZE)
48	#endif	327	#endif
49		328
50	enum {	329	enum {
51	REQ_QUIT,	330	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	};	331	};
63		332
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 *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
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;	333	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
93		336
94	static int started, wanted;	337	static SV *on_next_submit;
95	static volatile int nreqs;	338	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	339	static int max_outstanding;
97	static int respipe [2];
98		340
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	341	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		342
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	343	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	344	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
108		357
109	/* must be called at most once */	358	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
111	{	360	{
112	if (!req->self)	361	if (!req->self)
113	{	362	{
114	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	365	}
117		366
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		368	}
		369
		370	static SV *
		371	newSVaio_wd (aio_wd wd)
		372	{
		373	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
119	}	374	}
120		375
121	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
122	{	377	{
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	378	MAGIC *mg;
		379
		380	if (!SvROK (sv)
		381	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		382	&& SvSTASH (SvRV (sv)) != aio_req_stash
		383	&& !sv_derived_from (sv, "IO::AIO::REQ")))
124	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
125		385
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		387
128	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	389	}
130		390
		391	static aio_wd SvAIO_WD (SV *sv)
		392	{
		393	if (!SvROK (sv)
		394	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		395	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		396	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		397
		398	return (aio_wd)(long)SvIVX (SvRV (sv));
		399	}
		400
131	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
132	{	402	{
133	while (grp->length < grp->fd2)	403	if (grp->sv2 && SvOK (grp->sv2))
134	{	404	{
135	int old_len = grp->length;	405	dSP;
136		406
137	if (grp->fh2 && SvOK (grp->fh2))	407	ENTER;
		408	SAVETMPS;
		409	PUSHMARK (SP);
		410	XPUSHs (req_sv (grp, aio_grp_stash));
		411	PUTBACK;
		412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		413	SPAGAIN;
		414	FREETMPS;
		415	LEAVE;
		416	}
		417	}
		418
		419	static void req_submit (eio_req *req)
		420	{
		421	eio_submit (req);
		422
		423	if (expect_false (on_next_submit))
		424	{
		425	dSP;
		426	SV *cb = sv_2mortal (on_next_submit);
		427
		428	on_next_submit = 0;
		429
		430	PUSHMARK (SP);
		431	PUTBACK;
		432	call_sv (cb, G_DISCARD | G_EVAL);
		433	}
		434	}
		435
		436	static int req_invoke (eio_req *req)
		437	{
		438	if (req->flags & FLAG_SV2_RO_OFF)
		439	SvREADONLY_off (req->sv2);
		440
		441	if (!EIO_CANCELLED (req) && req->callback)
		442	{
		443	dSP;
		444	static SV *sv_result_cache; /* caches the result integer SV */
		445	SV *sv_result;
		446
		447	ENTER;
		448	SAVETMPS;
		449	PUSHMARK (SP);
		450	EXTEND (SP, 1);
		451
		452	/* do not recreate the result IV from scratch each time */
		453	if (expect_true (sv_result_cache))
138	{	454	{
139	dSP;	455	sv_result = sv_result_cache; sv_result_cache = 0;
140		456	SvIV_set (sv_result, req->result);
141	ENTER;	457	SvIOK_only (sv_result);
142	SAVETMPS;
143	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;
146	call_sv (grp->fh2, G_VOID | G_EVAL);
147	SPAGAIN;
148	FREETMPS;
149	LEAVE;
150	}	458	}
151		459	else
152	/* stop if no progress has been made */
153	if (old_len == grp->length)
154	{	460	{
155	SvREFCNT_dec (grp->fh2);	461	sv_result = newSViv (req->result);
156	grp->fh2 = 0;	462	SvREADONLY_on (sv_result);
157	break;
158	}	463	}
		464
		465	switch (req->type)
		466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
		471	case EIO_READDIR:
		472	{
		473	SV *rv = &PL_sv_undef;
		474
		475	if (req->result >= 0)
		476	{
		477	int i;
		478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		480	AV *av = newAV ();
		481
		482	av_extend (av, req->result - 1);
		483
		484	for (i = 0; i < req->result; ++i)
		485	{
		486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		489
		490	if (req->int1 & EIO_READDIR_CUSTOM2)
		491	{
		492	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		493	AV *avent = newAV ();
		494
		495	av_extend (avent, 2);
		496
		497	if (!sv_type [ent->type])
		498	{
		499	sv_type [ent->type] = newSViv (ent->type);
		500	SvREADONLY_on (sv_type [ent->type]);
		501	}
		502
		503	av_store (avent, 0, namesv);
		504	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		505	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		506
		507	av_store (av, i, newRV_noinc ((SV *)avent));
		508	}
		509	else
		510	av_store (av, i, namesv);
		511
		512	++ent;
		513	}
		514	else
		515	{
		516	SV *name = newSVpv (names, 0);
		517	av_store (av, i, name);
		518	names += SvCUR (name) + 1;
		519	}
		520	}
		521
		522	rv = sv_2mortal (newRV_noinc ((SV *)av));
		523	}
		524
		525	PUSHs (rv);
		526
		527	if (req->int1 & EIO_READDIR_CUSTOM1)
		528	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		529	}
		530	break;
		531
		532	case EIO_OPEN:
		533	{
		534	/* convert fd to fh */
		535	SV *fh = &PL_sv_undef;
		536
		537	if (req->result >= 0)
		538	{
		539	GV *gv = (GV *)sv_newmortal ();
		540	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		541	char sym [64];
		542	int symlen;
		543
		544	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		545	gv_init (gv, aio_stash, sym, symlen, 0);
		546
		547	symlen = snprintf (
		548	sym,
		549	sizeof (sym),
		550	"%s&=%d",
		551	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		552	(int)req->result
		553	);
		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
		559	PUSHs (fh);
		560	}
		561	break;
		562
		563	case EIO_STATVFS:
		564	case EIO_FSTATVFS:
		565	{
		566	SV *rv = &PL_sv_undef;
		567
		568	#ifndef _WIN32
		569	if (req->result >= 0)
		570	{
		571	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		572	HV *hv = newHV ();
		573
		574	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		575
		576	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		577	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		578	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		579	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		580	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		581	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		582	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		583	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		584	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		585	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		586	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		587	}
		588	#endif
		589
		590	PUSHs (rv);
		591	}
		592
		593	break;
		594
		595	case EIO_GROUP:
		596	req->int1 = 2; /* mark group as finished */
		597
		598	if (req->sv1)
		599	{
		600	int i;
		601	AV *av = (AV *)req->sv1;
		602
		603	EXTEND (SP, AvFILL (av) + 1);
		604	for (i = 0; i <= AvFILL (av); ++i)
		605	PUSHs (*av_fetch (av, i, 0));
		606	}
		607	break;
		608
		609	case EIO_NOP:
		610	case EIO_BUSY:
		611	break;
		612
		613	case EIO_READLINK:
		614	case EIO_REALPATH:
		615	if (req->result > 0)
		616	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		617	break;
		618
		619	case EIO_STAT:
		620	case EIO_LSTAT:
		621	case EIO_FSTAT:
		622	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		623
		624	if (!(PL_laststatval = req->result))
		625	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		626	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		627
		628	PUSHs (sv_result);
		629	break;
		630
		631	case EIO_READ:
		632	{
		633	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		634	*SvEND (req->sv2) = 0;
		635	SvPOK_only (req->sv2);
		636	SvSETMAGIC (req->sv2);
		637	PUSHs (sv_result);
		638	}
		639	break;
		640
		641	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		642	if (req->result > 0)
		643	SvIV_set (sv_result, 0);
		644	/* FALLTHROUGH */
		645
		646	default:
		647	PUSHs (sv_result);
		648	break;
		649	}
		650
		651	errno = req->errorno;
		652
		653	PUTBACK;
		654	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		655	SPAGAIN;
		656
		657	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		658	SvREFCNT_dec (sv_result);
		659	else
		660	sv_result_cache = sv_result;
		661
		662	FREETMPS;
		663	LEAVE;
		664
		665	PUTBACK;
159	}	666	}
160	}
161		667
162	static void aio_grp_dec (aio_req grp)	668	return !!SvTRUE (ERRSV);
163	{
164	--grp->length;
165
166	/* call feeder, if applicable */
167	aio_grp_feed (grp);
168
169	/* finish, if done */
170	if (!grp->length && grp->fd)
171	{
172	req_invoke (grp);
173	req_free (grp);
174	}
175	}	669	}
176		670
177	static void poll_wait ()
178	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;
182	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);
184
185	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}
187	}
188
189	static void req_invoke (aio_req req)
190	{
191	dSP;
192	int errorno = errno;
193
194	if (req->cancelled || !SvOK (req->callback))
195	return;
196
197	errno = req->errorno;
198
199	ENTER;
200	SAVETMPS;
201	PUSHMARK (SP);
202	EXTEND (SP, 1);
203
204	switch (req->type)
205	{
206	case REQ_READDIR:
207	{
208	SV *rv = &PL_sv_undef;
209
210	if (req->result >= 0)
211	{
212	char *buf = req->data2ptr;
213	AV *av = newAV ();
214
215	while (req->result)
216	{
217	SV *sv = newSVpv (buf, 0);
218
219	av_push (av, sv);
220	buf += SvCUR (sv) + 1;
221	req->result--;
222	}
223
224	rv = sv_2mortal (newRV_noinc ((SV *)av));
225	}
226
227	PUSHs (rv);
228	}
229	break;
230
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV *av = (AV *)req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID | G_EVAL);
273	SPAGAIN;
274
275	FREETMPS;
276	LEAVE;
277
278	errno = errorno;
279
280	if (SvTRUE (ERRSV))
281	{
282	req_free (req);
283	croak (0);
284	}
285	}
286
287	static void req_free (aio_req req)	671	static void req_destroy (aio_req req)
288	{	672	{
289	if (req->grp)
290	{
291	aio_req grp = req->grp;
292
293	/* unlink request */
294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297	if (grp->grp_first == req)
298	grp->grp_first = req->grp_next;
299
300	aio_grp_dec (grp);
301	}
302
303	if (req->self)	673	if (req->self)
304	{	674	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	675	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	676	SvREFCNT_dec (req->self);
307	}	677	}
308		678
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	679	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	680	SvREFCNT_dec (req->sv2);
		681	SvREFCNT_dec (req->sv3);
		682	SvREFCNT_dec (req->sv4);
312	SvREFCNT_dec (req->callback);	683	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317		684
318	Safefree (req);	685	Safefree (req);
319	}	686	}
320		687
321	static void req_cancel (aio_req req)	688	static void req_cancel_subs (aio_req grp)
322	{	689	{
323	req->cancelled = 1;
324
325	if (req->type == REQ_GROUP)	690	if (grp->type != EIO_GROUP)
		691	return;
		692
		693	SvREFCNT_dec (grp->sv2);
		694	grp->sv2 = 0;
		695
		696	eio_grp_cancel (grp);
		697	}
		698
		699	static void create_respipe (void)
		700	{
		701	if (s_epipe_renew (&respipe))
		702	croak ("IO::AIO: unable to initialize result pipe");
		703	}
		704
		705	static void poll_wait (void)
		706	{
		707	while (eio_nreqs ())
326	{	708	{
327	aio_req sub;	709	int size;
328		710
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	711	X_LOCK (reslock);
330	req_cancel (sub);	712	size = res_queue.size;
		713	X_UNLOCK (reslock);
		714
		715	if (size)
		716	return;
		717
		718	etp_maybe_start_thread ();
		719
		720	s_epipe_wait (&respipe);
331	}	721	}
332	}	722	}
333		723
334	static int poll_cb ()	724	static int poll_cb (void)
335	{	725	{
336	dSP;
337	int count = 0;
338	int do_croak = 0;
339	aio_req req;
340
341	for (;;)	726	for (;;)
342	{	727	{
343	pthread_mutex_lock (&reslock);	728	int res = eio_poll ();
344	req = ress;
345		729
346	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		753	# define munmap(addr,length) (errno = ENOSYS, -1)
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
		768	{
		769	int old_errno = errno;
		770	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		771	errno = old_errno;
		772
		773	mg->mg_obj = 0; /* just in case */
		774
		775	SvREADONLY_off (sv);
		776
		777	if (SvPVX (sv) != mg->mg_ptr)
		778	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		779
		780	SvCUR_set (sv, 0);
		781	SvPVX (sv) = 0;
		782	SvOK_off (sv);
		783
		784	return 0;
		785	}
		786
		787	static MGVTBL mmap_vtbl = {
		788	0, 0, 0, 0, mmap_free
		789	};
		790
		791	/*****************************************************************************/
		792
		793	static SV * get_cb (SV *cb_sv)
		794	{
		795	SvGETMAGIC (cb_sv);
		796	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		797	}
		798
		799	#define dREQ \
		800	SV *cb_cv; \
		801	aio_req req; \
		802	int req_pri = next_pri; \
		803	next_pri = EIO_PRI_DEFAULT; \
		804	\
		805	cb_cv = get_cb (callback); \
		806	\
		807	Newz (0, req, 1, eio_req); \
		808	if (!req) \
		809	croak ("out of memory during eio_req allocation"); \
		810	\
		811	req->callback = SvREFCNT_inc (cb_cv); \
		812	req->pri = req_pri
		813
		814	#define REQ_SEND \
		815	PUTBACK; \
		816	req_submit (req); \
		817	SPAGAIN; \
		818	\
		819	if (GIMME_V != G_VOID) \
		820	XPUSHs (req_sv (req, aio_req_stash));
		821
		822	static void
		823	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		824	{
		825	if (expect_false (SvROK (path)))
		826	{
		827	AV *av = (AV *)SvRV (path);
		828	SV *wdob;
		829
		830	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		831	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		832
		833	path = AvARRAY (av)[1];
		834	wdob = AvARRAY (av)[0];
		835
		836	if (SvOK (wdob))
347	{	837	{
348	ress = req->next;	838	*wd = SvAIO_WD (wdob);
349		839	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
350	if (!ress)
351	{
352	/* read any signals sent by the worker threads */
353	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)
355	;
356
357	rese = 0;
358	}
359	}
360
361	pthread_mutex_unlock (&reslock);
362
363	if (!req)
364	break;
365
366	--nreqs;
367
368	if (req->type == REQ_QUIT)
369	started--;
370	else if (req->type == REQ_GROUP && req->length)
371	{
372	req->fd = 1; /* mark request as delayed */
373	continue;
374	}	840	}
375	else	841	else
376	{	842	*wd = EIO_INVALID_WD;
377	if (req->type == REQ_READ)
378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
381	SvREADONLY_off (req->data);
382
383	if (req->statdata)
384	{
385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386	PL_laststatval = req->result;
387	PL_statcache = *(req->statdata);
388	}
389
390	req_invoke (req);
391
392	count++;
393	}
394
395	req_free (req);
396	}	843	}
397		844
398	return count;	845	*pathsv = newSVsv (path);
		846	*ptr = SvPVbyte_nolen (*pathsv);
399	}	847	}
400		848
401	static void *aio_proc(void *arg);	849	static void
402		850	req_set_path1 (aio_req req, SV *path)
403	static void start_thread (void)
404	{	851	{
405	sigset_t fullsigset, oldsigset;	852	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
406	pthread_t tid;
407	pthread_attr_t attr;
408
409	pthread_attr_init (&attr);
410	pthread_attr_setstacksize (&attr, STACKSIZE);
411	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412
413	sigfillset (&fullsigset);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
417	started++;
418
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
420	}	853	}
421		854
422	static void req_send (aio_req req)	855	static void
		856	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
423	{	857	{
424	while (started < wanted && nreqs >= started)	858	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
425	start_thread ();
426		859
427	++nreqs;	860	switch (SvTYPE (rv))
428
429	pthread_mutex_lock (&reqlock);
430
431	req->next = 0;
432
433	if (reqe)
434	{	861	{
435	reqe->next = req;	862	case SVt_PVIO:
436	reqe = req;	863	case SVt_PVLV:
		864	case SVt_PVGV:
		865	req->type = type_fh;
		866	req->sv1 = newSVsv (fh_or_path);
		867	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		868	break;
		869
		870	default:
		871	req->type = type_path;
		872	req_set_path1 (req, fh_or_path);
		873	break;
437	}	874	}
438	else
439	reqe = reqs = req;
440		875
441	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);
443
444	if (nreqs > max_outstanding)
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}	876	}
455		877
456	static void end_thread (void)	878	MODULE = IO::AIO PACKAGE = IO::AIO
457	{
458	aio_req req;
459	Newz (0, req, 1, aio_cb);
460	req->type = REQ_QUIT;
461		879
462	req_send (req);	880	PROTOTYPES: ENABLE
463	}
464		881
465	static void min_parallel (int nthreads)	882	BOOT:
466	{	883	{
467	if (wanted < nthreads)	884	static const struct {
468	wanted = nthreads;	885	const char *name;
469	}	886	IV iv;
		887	} *civ, const_iv[] = {
		888	# define const_niv(name, value) { # name, (IV) value },
		889	# define const_iv(name) { # name, (IV) name },
		890	# define const_eio(name) { # name, (IV) EIO_ ## name },
		891	const_iv (EXDEV)
		892	const_iv (ENOSYS)
		893	const_iv (O_RDONLY)
		894	const_iv (O_WRONLY)
		895	const_iv (O_RDWR)
		896	const_iv (O_CREAT)
		897	const_iv (O_TRUNC)
		898	const_iv (O_EXCL)
		899	const_iv (O_APPEND)
470		900
471	static void max_parallel (int nthreads)	901	const_iv (O_ASYNC)
472	{	902	const_iv (O_DIRECT)
473	int cur = started;	903	const_iv (O_NOATIME)
474		904
475	if (wanted > nthreads)	905	const_iv (O_CLOEXEC)
476	wanted = nthreads;	906	const_iv (O_NOCTTY)
		907	const_iv (O_NOFOLLOW)
		908	const_iv (O_NONBLOCK)
		909	const_iv (O_EXEC)
		910	const_iv (O_SEARCH)
		911	const_iv (O_DIRECTORY)
		912	const_iv (O_DSYNC)
		913	const_iv (O_RSYNC)
		914	const_iv (O_SYNC)
		915	const_iv (O_TTY_INIT)
477		916
478	while (cur > wanted)	917	const_iv (S_IFIFO)
479	{	918	const_iv (S_IFCHR)
480	end_thread ();	919	const_iv (S_IFBLK)
481	cur--;	920	const_iv (S_IFLNK)
482	}	921	const_iv (S_IFREG)
		922	const_iv (S_IFDIR)
		923	const_iv (S_IFWHT)
		924	const_iv (S_IFSOCK)
		925	const_iv (S_IFMT)
483		926
484	while (started > wanted)	927	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
485	{	928	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
486	poll_wait ();	929	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
487	poll_cb ();	930	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
488	}	931	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
489	}	932	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
490		933
491	static void create_pipe ()	934	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
492	{	935	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
493	if (pipe (respipe))	936	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
494	croak ("unable to initialize result pipe");	937	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		938	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
495		939
496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	940	const_iv (ST_RDONLY)
497	croak ("cannot set result pipe to nonblocking mode");	941	const_iv (ST_NOSUID)
		942	const_iv (ST_NODEV)
		943	const_iv (ST_NOEXEC)
		944	const_iv (ST_SYNCHRONOUS)
		945	const_iv (ST_MANDLOCK)
		946	const_iv (ST_WRITE)
		947	const_iv (ST_APPEND)
		948	const_iv (ST_IMMUTABLE)
		949	const_iv (ST_NOATIME)
		950	const_iv (ST_NODIRATIME)
		951	const_iv (ST_RELATIME)
498		952
499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	953	const_iv (PROT_NONE)
500	croak ("cannot set result pipe to nonblocking mode");	954	const_iv (PROT_EXEC)
501	}	955	const_iv (PROT_READ)
		956	const_iv (PROT_WRITE)
502		957
503	/*****************************************************************************/	958	/*const_iv (MAP_FIXED)*/
504	/* work around various missing functions */	959	const_iv (MAP_PRIVATE)
		960	const_iv (MAP_SHARED)
		961	const_iv (MAP_ANONYMOUS)
505		962
506	#if !HAVE_PREADWRITE	963	/* linuxish */
507	# define pread aio_pread	964	const_iv (MAP_HUGETLB)
508	# define pwrite aio_pwrite	965	const_iv (MAP_LOCKED)
		966	const_iv (MAP_NORESERVE)
		967	const_iv (MAP_POPULATE)
		968	const_iv (MAP_NONBLOCK)
509		969
510	/*	970	const_eio (MCL_FUTURE)
511	* make our pread/pwrite safe against themselves, but not against	971	const_eio (MCL_CURRENT)
512	* normal read/write by using a mutex. slows down execution a lot,
513	* but that's your problem, not mine.
514	*/
515	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
516		972
517	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	973	const_eio (MS_ASYNC)
518	{	974	const_eio (MS_INVALIDATE)
519	ssize_t res;	975	const_eio (MS_SYNC)
520	off_t ooffset;
521		976
522	pthread_mutex_lock (&preadwritelock);	977	const_eio (MT_MODIFY)
523	ooffset = lseek (fd, 0, SEEK_CUR);
524	lseek (fd, offset, SEEK_SET);
525	res = read (fd, buf, count);
526	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);
528		978
529	return res;	979	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
530	}	980	const_eio (SYNC_FILE_RANGE_WRITE)
		981	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
531		982
532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	983	const_eio (FALLOC_FL_KEEP_SIZE)
533	{
534	ssize_t res;
535	off_t ooffset;
536		984
537	pthread_mutex_lock (&preadwritelock);	985	const_eio (READDIR_DENTS)
538	ooffset = lseek (fd, 0, SEEK_CUR);	986	const_eio (READDIR_DIRS_FIRST)
539	lseek (fd, offset, SEEK_SET);	987	const_eio (READDIR_STAT_ORDER)
540	res = write (fd, buf, count);	988	const_eio (READDIR_FOUND_UNKNOWN)
541	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);
543		989
544	return res;	990	const_eio (DT_UNKNOWN)
545	}	991	const_eio (DT_FIFO)
546	#endif	992	const_eio (DT_CHR)
547		993	const_eio (DT_DIR)
548	#if !HAVE_FDATASYNC	994	const_eio (DT_BLK)
549	# define fdatasync fsync	995	const_eio (DT_REG)
550	#endif	996	const_eio (DT_LNK)
551		997	const_eio (DT_SOCK)
552	#if !HAVE_READAHEAD	998	const_eio (DT_WHT)
553	# define readahead aio_readahead
554
555	static ssize_t readahead (int fd, off_t offset, size_t count)
556	{
557	char readahead_buf[4096];
558
559	while (count > 0)
560	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
562
563	pread (fd, readahead_buf, len, offset);
564	offset += len;
565	count -= len;
566	}
567
568	errno = 0;
569	}
570	#endif
571
572	#if !HAVE_READDIR_R
573	# define readdir_r aio_readdir_r
574
575	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
576
577	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
578	{
579	struct dirent *e;
580	int errorno;
581
582	pthread_mutex_lock (&readdirlock);
583
584	e = readdir (dirp);
585	errorno = errno;
586
587	if (e)
588	{
589	*res = ent;
590	strcpy (ent->d_name, e->d_name);
591	}
592	else
593	*res = 0;
594
595	pthread_mutex_unlock (&readdirlock);
596
597	errno = errorno;
598	return e ? 0 : -1;
599	}
600	#endif
601
602	/* sendfile always needs emulation */
603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
604	{
605	ssize_t res;
606
607	if (!count)
608	return 0;
609
610	#if HAVE_SENDFILE
611	# if __linux
612	res = sendfile (ofd, ifd, &offset, count);
613
614	# elif __freebsd
615	/*
616	* Of course, the freebsd sendfile is a dire hack with no thoughts
617	* wasted on making it similar to other I/O functions.
618	*/
619	{
620	off_t sbytes;
621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
622
623	if (res < 0 && sbytes)
624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
625	res = sbytes;
626	}	999	};
627		1000
628	# elif __hpux	1001	aio_stash = gv_stashpv ("IO::AIO" , 1);
629	res = sendfile (ofd, ifd, offset, count, 0, 0);	1002	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1003	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1004	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
630		1005
631	# elif __solaris	1006	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
632	{	1007	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
633	struct sendfilevec vec;
634	size_t sbytes;
635		1008
636	vec.sfv_fd = ifd;	1009	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
637	vec.sfv_flag = 0;
638	vec.sfv_off = offset;
639	vec.sfv_len = count;
640		1010
641	res = sendfilev (ofd, &vec, 1, &sbytes);	1011	reinit ();
		1012	}
642		1013
643	if (res < 0 && sbytes)	1014	void
		1015	reinit ()
		1016	PROTOTYPE:
		1017
		1018	void
		1019	max_poll_reqs (unsigned int nreqs)
		1020	PROTOTYPE: $
		1021	CODE:
		1022	eio_set_max_poll_reqs (nreqs);
		1023
		1024	void
		1025	max_poll_time (double nseconds)
		1026	PROTOTYPE: $
		1027	CODE:
		1028	eio_set_max_poll_time (nseconds);
		1029
		1030	void
		1031	min_parallel (unsigned int nthreads)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_min_parallel (nthreads);
		1035
		1036	void
		1037	max_parallel (unsigned int nthreads)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_parallel (nthreads);
		1041
		1042	void
		1043	max_idle (unsigned int nthreads)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_max_idle (nthreads);
		1047
		1048	void
		1049	idle_timeout (unsigned int seconds)
		1050	PROTOTYPE: $
		1051	CODE:
		1052	eio_set_idle_timeout (seconds);
		1053
		1054	void
		1055	max_outstanding (unsigned int maxreqs)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	max_outstanding = maxreqs;
		1059
		1060	void
		1061	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_WD_OPEN;
		1067	req_set_path1 (req, pathname);
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
		1073	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1074	PPCODE:
		1075	{
		1076	dREQ;
		1077
		1078	req->type = EIO_OPEN;
		1079	req_set_path1 (req, pathname);
		1080	req->int1 = flags;
		1081	req->int2 = mode;
		1082
		1083	REQ_SEND;
		1084	}
		1085
		1086	void
		1087	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1088	ALIAS:
		1089	aio_fsync = EIO_FSYNC
		1090	aio_fdatasync = EIO_FDATASYNC
		1091	aio_syncfs = EIO_SYNCFS
		1092	PPCODE:
		1093	{
		1094	int fd = s_fileno_croak (fh, 0);
		1095	dREQ;
		1096
		1097	req->type = ix;
		1098	req->sv1 = newSVsv (fh);
		1099	req->int1 = fd;
		1100
		1101	REQ_SEND (req);
		1102	}
		1103
		1104	void
		1105	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1106	PPCODE:
		1107	{
		1108	int fd = s_fileno_croak (fh, 0);
		1109	dREQ;
		1110
		1111	req->type = EIO_SYNC_FILE_RANGE;
		1112	req->sv1 = newSVsv (fh);
		1113	req->int1 = fd;
		1114	req->offs = offset;
644	res = sbytes;	1115	req->size = nbytes;
645	}	1116	req->int2 = flags;
646		1117
647	# endif	1118	REQ_SEND (req);
		1119	}
		1120
		1121	void
		1122	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1123	PPCODE:
		1124	{
		1125	int fd = s_fileno_croak (fh, 0);
		1126	dREQ;
		1127
		1128	req->type = EIO_FALLOCATE;
		1129	req->sv1 = newSVsv (fh);
		1130	req->int1 = fd;
		1131	req->int2 = mode;
		1132	req->offs = offset;
		1133	req->size = len;
		1134
		1135	REQ_SEND (req);
		1136	}
		1137
		1138	void
		1139	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1143	int fd = s_fileno_croak (fh, 0);
		1144	dREQ;
		1145
		1146	if (expect_false (close_fd < 0))
		1147	{
		1148	int pipefd [2];
		1149
		1150	if (
		1151	#ifdef _WIN32
		1152	_pipe (pipefd, 1, _O_BINARY) < 0
648	#else	1153	#else
649	res = -1;	1154	pipe (pipefd) < 0
650	errno = ENOSYS;	1155	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
651	#endif	1156	#endif
652		1157	|| close (pipefd [1]) < 0
653	if (res < 0
654	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
655	#if __solaris
656	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
657	#endif
658	)
659	)
660	{
661	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];
663	res = 0;
664
665	while (count)
666	{
667	ssize_t cnt;
668
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670
671	if (cnt <= 0)
672	{	1158	)
673	if (cnt && !res) res = -1;	1159	abort (); /*D*/
674	break;
675	}
676		1160
677	cnt = write (ofd, buf, cnt);	1161	close_fd = pipefd [0];
678
679	if (cnt <= 0)
680	{
681	if (cnt && !res) res = -1;
682	break;
683	}
684
685	offset += cnt;
686	res += cnt;
687	count -= cnt;
688	}
689	}
690
691	return res;
692	}
693
694	/* read a full directory */
695	static int scandir_ (const char *path, void **namesp)
696	{
697	DIR *dirp = opendir (path);
698	union
699	{
700	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;
703	struct dirent *entp;
704	char *name, *names;
705	int memlen = 4096;
706	int memofs = 0;
707	int res = 0;
708	int errorno;
709
710	if (!dirp)
711	return -1;
712
713	names = malloc (memlen);
714
715	for (;;)
716	{
717	errno = 0, readdir_r (dirp, &u.d, &entp);
718
719	if (!entp)
720	break;
721
722	name = entp->d_name;
723
724	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725	{
726	int len = strlen (name) + 1;
727
728	res++;
729
730	while (memofs + len > memlen)
731	{
732	memlen *= 2;
733	names = realloc (names, memlen);
734	if (!names)
735	break;
736	}
737
738	memcpy (names + memofs, name, len);
739	memofs += len;
740	}
741	}
742
743	errorno = errno;
744	closedir (dirp);
745
746	if (errorno)
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752
753	*namesp = (void *)names;
754	return res;
755	}
756
757	/*****************************************************************************/
758
759	static void *aio_proc (void *thr_arg)
760	{
761	aio_req req;
762	int type;
763
764	do
765	{
766	pthread_mutex_lock (&reqlock);
767
768	for (;;)
769	{
770	req = reqs;
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777
778	if (req)
779	break;
780
781	pthread_cond_wait (&reqwait, &reqlock);
782	}
783
784	pthread_mutex_unlock (&reqlock);
785
786	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */
790	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
796
797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800
801	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
802	case REQ_CLOSE: req->result = close (req->fd); break;
803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812
813	case REQ_SLEEP:
814	{
815	struct timeval tv;
816
817	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;
819
820	req->result = select (0, 0, 0, 0, &tv);
821	}
822
823	case REQ_QUIT:
824	break;
825
826	default:
827	req->result = ENOSYS;
828	break;
829	}	1162	}
830		1163
831	req->errorno = errno;
832
833	pthread_mutex_lock (&reslock);
834
835	req->next = 0;
836
837	printf ("queue rese %p\n", rese);//D
838	if (rese)
839	{
840	rese->next = req;
841	rese = req;
842	}
843	else
844	{
845	rese = ress = req;
846
847	/* write a dummy byte to the pipe so fh becomes ready */
848	write (respipe [1], &respipe, 1);
849	}
850
851	pthread_mutex_unlock (&reslock);
852	}
853	while (type != REQ_QUIT);
854
855	return 0;
856	}
857
858	/*****************************************************************************/
859
860	static void atfork_prepare (void)
861	{
862	pthread_mutex_lock (&reqlock);
863	pthread_mutex_lock (&reslock);
864	#if !HAVE_PREADWRITE
865	pthread_mutex_lock (&preadwritelock);
866	#endif
867	#if !HAVE_READDIR_R
868	pthread_mutex_lock (&readdirlock);
869	#endif
870	}
871
872	static void atfork_parent (void)
873	{
874	#if !HAVE_READDIR_R
875	pthread_mutex_unlock (&readdirlock);
876	#endif
877	#if !HAVE_PREADWRITE
878	pthread_mutex_unlock (&preadwritelock);
879	#endif
880	pthread_mutex_unlock (&reslock);
881	pthread_mutex_unlock (&reqlock);
882	}
883
884	static void atfork_child (void)
885	{
886	aio_req prv;
887
888	started = 0;
889
890	while (reqs)
891	{
892	prv = reqs;
893	reqs = prv->next;
894	req_free (prv);
895	}
896
897	reqs = reqe = 0;
898
899	while (ress)
900	{
901	prv = ress;
902	ress = prv->next;
903	req_free (prv);
904	}
905
906	ress = rese = 0;
907
908	close (respipe [0]);
909	close (respipe [1]);
910	create_pipe ();
911
912	atfork_parent ();
913	}
914
915	#define dREQ \
916	aio_req req; \
917	\
918	if (SvOK (callback) && !SvROK (callback)) \
919	croak ("callback must be undef or of reference type"); \
920	\
921	Newz (0, req, 1, aio_cb); \
922	if (!req) \
923	croak ("out of memory during aio_req allocation"); \
924	\
925	req->callback = newSVsv (callback)
926
927	#define REQ_SEND \
928	req_send (req); \
929	\
930	if (GIMME_V != G_VOID) \
931	XPUSHs (req_sv (req, AIO_REQ_KLASS));
932
933	MODULE = IO::AIO PACKAGE = IO::AIO
934
935	PROTOTYPES: ENABLE
936
937	BOOT:
938	{
939	HV *stash = gv_stashpv ("IO::AIO", 1);
940	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
941	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
942	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
943
944	create_pipe ();
945	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
946	}
947
948	void
949	min_parallel (nthreads)
950	int nthreads
951	PROTOTYPE: $
952
953	void
954	max_parallel (nthreads)
955	int nthreads
956	PROTOTYPE: $
957
958	int
959	max_outstanding (nreqs)
960	int nreqs
961	PROTOTYPE: $
962	CODE:
963	RETVAL = max_outstanding;
964	max_outstanding = nreqs;
965
966	void
967	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
968	SV * pathname
969	int flags
970	int mode
971	SV * callback
972	PROTOTYPE: $$$;$
973	PPCODE:
974	{
975	dREQ;
976
977	req->type = REQ_OPEN;	1164	req->type = EIO_DUP2;
		1165	req->int1 = close_fd;
978	req->data = newSVsv (pathname);	1166	req->sv2 = newSVsv (fh);
979	req->dataptr = SvPVbyte_nolen (req->data);	1167	req->int2 = fd;
980	req->fd = flags;
981	req->mode = mode;
982		1168
983	REQ_SEND;	1169	REQ_SEND (req);
984	}	1170	}
985		1171
986	void	1172	void
987	aio_close (fh,callback=&PL_sv_undef)	1173	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
988	SV * fh
989	SV * callback
990	PROTOTYPE: $;$
991	ALIAS:	1174	ALIAS:
992	aio_close = REQ_CLOSE
993	aio_fsync = REQ_FSYNC
994	aio_fdatasync = REQ_FDATASYNC
995	PPCODE:
996	{
997	dREQ;
998
999	req->type = ix;
1000	req->fh = newSVsv (fh);
1001	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1002
1003	REQ_SEND (req);
1004	}
1005
1006	void
1007	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1008	SV * fh
1009	UV offset
1010	UV length
1011	SV * data
1012	UV dataoffset
1013	SV * callback
1014	ALIAS:
1015	aio_read = REQ_READ	1175	aio_read = EIO_READ
1016	aio_write = REQ_WRITE	1176	aio_write = EIO_WRITE
1017	PROTOTYPE: $$$$$;$
1018	PPCODE:	1177	PPCODE:
1019	{	1178	{
1020	aio_req req;
1021	STRLEN svlen;	1179	STRLEN svlen;
		1180	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1022	char *svptr = SvPVbyte (data, svlen);	1181	char *svptr = SvPVbyte (data, svlen);
1023		1182	UV len = SvUV (length);
1024	SvUPGRADE (data, SVt_PV);
1025	SvPOK_on (data);
1026		1183
1027	if (dataoffset < 0)	1184	if (dataoffset < 0)
1028	dataoffset += svlen;	1185	dataoffset += svlen;
1029		1186
1030	if (dataoffset < 0 || dataoffset > svlen)	1187	if (dataoffset < 0 || dataoffset > svlen)
1031	croak ("data offset outside of string");	1188	croak ("dataoffset outside of data scalar");
1032		1189
1033	if (ix == REQ_WRITE)	1190	if (ix == EIO_WRITE)
1034	{	1191	{
1035	/* write: check length and adjust. */	1192	/* write: check length and adjust. */
1036	if (length < 0 || length + dataoffset > svlen)	1193	if (!SvOK (length) || len + dataoffset > svlen)
1037	length = svlen - dataoffset;	1194	len = svlen - dataoffset;
1038	}	1195	}
1039	else	1196	else
1040	{	1197	{
1041	/* read: grow scalar as necessary */	1198	/* read: check type and grow scalar as necessary */
		1199	SvUPGRADE (data, SVt_PV);
1042	svptr = SvGROW (data, length + dataoffset);	1200	svptr = SvGROW (data, len + dataoffset + 1);
1043	}	1201	}
1044
1045	if (length < 0)
1046	croak ("length must not be negative");
1047		1202
1048	{	1203	{
1049	dREQ;	1204	dREQ;
1050		1205
1051	req->type = ix;	1206	req->type = ix;
1052	req->fh = newSVsv (fh);	1207	req->sv1 = newSVsv (fh);
1053	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1208	req->int1 = fd;
1054	: IoOFP (sv_2io (fh)));	1209	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1055	req->offset = offset;	1210	req->size = len;
1056	req->length = length;
1057	req->data = SvREFCNT_inc (data);	1211	req->sv2 = SvREFCNT_inc (data);
1058	req->dataptr = (char *)svptr + dataoffset;	1212	req->ptr2 = (char *)svptr + dataoffset;
		1213	req->stroffset = dataoffset;
1059		1214
1060	if (!SvREADONLY (data))	1215	if (!SvREADONLY (data))
1061	{	1216	{
1062	SvREADONLY_on (data);	1217	SvREADONLY_on (data);
1063	req->data2ptr = (void *)data;	1218	req->flags |= FLAG_SV2_RO_OFF;
1064	}	1219	}
1065		1220
1066	REQ_SEND;	1221	REQ_SEND;
1067	}	1222	}
1068	}	1223	}
1069		1224
1070	void	1225	void
1071	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1226	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1072	SV * out_fh	1227	ALIAS:
1073	SV * in_fh	1228	aio_readlink = EIO_READLINK
1074	UV in_offset	1229	aio_realpath = EIO_REALPATH
1075	UV length
1076	SV * callback
1077	PROTOTYPE: $$$$;$
1078	PPCODE:	1230	PPCODE:
1079	{	1231	{
		1232	dREQ;
		1233
		1234	req->type = ix;
		1235	req_set_path1 (req, pathname);
		1236
		1237	REQ_SEND;
		1238	}
		1239
		1240	void
		1241	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1242	PPCODE:
		1243	{
		1244	int ifd = s_fileno_croak (in_fh , 0);
		1245	int ofd = s_fileno_croak (out_fh, 1);
1080	dREQ;	1246	dREQ;
1081		1247
1082	req->type = REQ_SENDFILE;	1248	req->type = EIO_SENDFILE;
1083	req->fh = newSVsv (out_fh);	1249	req->sv1 = newSVsv (out_fh);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1250	req->int1 = ofd;
1085	req->fh2 = newSVsv (in_fh);	1251	req->sv2 = newSVsv (in_fh);
1086	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1252	req->int2 = ifd;
1087	req->offset = in_offset;	1253	req->offs = in_offset;
1088	req->length = length;	1254	req->size = length;
1089		1255
1090	REQ_SEND;	1256	REQ_SEND;
1091	}	1257	}
1092		1258
1093	void	1259	void
1094	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1260	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1095	SV * fh
1096	UV offset
1097	IV length
1098	SV * callback
1099	PROTOTYPE: $$$;$
1100	PPCODE:	1261	PPCODE:
1101	{	1262	{
		1263	int fd = s_fileno_croak (fh, 0);
1102	dREQ;	1264	dREQ;
1103		1265
1104	req->type = REQ_READAHEAD;	1266	req->type = EIO_READAHEAD;
1105	req->fh = newSVsv (fh);	1267	req->sv1 = newSVsv (fh);
1106	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1268	req->int1 = fd;
1107	req->offset = offset;	1269	req->offs = offset;
1108	req->length = length;	1270	req->size = length;
1109		1271
1110	REQ_SEND;	1272	REQ_SEND;
1111	}	1273	}
1112		1274
1113	void	1275	void
1114	aio_stat (fh_or_path,callback=&PL_sv_undef)	1276	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1115	SV * fh_or_path
1116	SV * callback
1117	ALIAS:	1277	ALIAS:
1118	aio_stat = REQ_STAT	1278	aio_stat = EIO_STAT
1119	aio_lstat = REQ_LSTAT	1279	aio_lstat = EIO_LSTAT
		1280	aio_statvfs = EIO_STATVFS
1120	PPCODE:	1281	PPCODE:
1121	{	1282	{
1122	dREQ;	1283	dREQ;
1123		1284
1124	New (0, req->statdata, 1, Stat_t);
1125	if (!req->statdata)
1126	{
1127	req_free (req);
1128	croak ("out of memory during aio_req->statdata allocation");
1129	}
1130
1131	if (SvPOK (fh_or_path))
1132	{
1133	req->type = ix;
1134	req->data = newSVsv (fh_or_path);
1135	req->dataptr = SvPVbyte_nolen (req->data);
1136	}
1137	else
1138	{
1139	req->type = REQ_FSTAT;
1140	req->fh = newSVsv (fh_or_path);	1285	req->sv1 = newSVsv (fh_or_path);
1141	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1286	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1142	}
1143
1144	REQ_SEND;	1287	REQ_SEND;
1145	}	1288	}
1146		1289
		1290	UV
		1291	major (UV dev)
		1292	ALIAS:
		1293	minor = 1
		1294	CODE:
		1295	RETVAL = ix ? major (dev) : minor (dev);
		1296	OUTPUT:
		1297	RETVAL
		1298
		1299	UV
		1300	makedev (UV maj, UV min)
		1301	CODE:
		1302	RETVAL = makedev (maj, min);
		1303	OUTPUT:
		1304	RETVAL
		1305
1147	void	1306	void
		1307	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1313	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1314	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1315
		1316	REQ_SEND;
		1317	}
		1318
		1319	void
		1320	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1321	PPCODE:
		1322	{
		1323	dREQ;
		1324
		1325	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1326	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1333	ALIAS:
		1334	aio_chmod = EIO_CHMOD
		1335	aio_mkdir = EIO_MKDIR
		1336	PPCODE:
		1337	{
		1338	dREQ;
		1339
		1340	req->int2 = mode;
		1341	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1353	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1354	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->type = EIO_READDIR;
		1366	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1367
		1368	if (flags & EIO_READDIR_DENTS)
		1369	req->int1 |= EIO_READDIR_CUSTOM2;
		1370
		1371	req_set_path1 (req, pathname);
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
1148	aio_unlink (pathname,callback=&PL_sv_undef)	1377	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1149	SV * pathname
1150	SV * callback
1151	ALIAS:	1378	ALIAS:
1152	aio_unlink = REQ_UNLINK	1379	aio_unlink = EIO_UNLINK
1153	aio_rmdir = REQ_RMDIR	1380	aio_rmdir = EIO_RMDIR
1154	aio_readdir = REQ_READDIR	1381	aio_readdir = EIO_READDIR
1155	PPCODE:	1382	PPCODE:
1156	{	1383	{
1157	dREQ;	1384	dREQ;
1158		1385
1159	req->type = ix;	1386	req->type = ix;
1160	req->data = newSVsv (pathname);	1387	req_set_path1 (req, pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1394	ALIAS:
		1395	aio_link = EIO_LINK
		1396	aio_symlink = EIO_SYMLINK
		1397	aio_rename = EIO_RENAME
		1398	PPCODE:
		1399	{
		1400	dREQ;
		1401	eio_wd wd2;
		1402
		1403	req->type = ix;
		1404	req_set_path1 (req, oldpath);
		1405	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1406	req->int3 = (long)wd2;
1162		1407
1163	REQ_SEND;	1408	REQ_SEND;
1164	}	1409	}
1165		1410
1166	void	1411	void
1167	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1412	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1168	SV * oldpath
1169	SV * newpath
1170	SV * callback
1171	ALIAS:
1172	aio_link = REQ_LINK
1173	aio_symlink = REQ_SYMLINK
1174	aio_rename = REQ_RENAME
1175	PPCODE:	1413	PPCODE:
1176	{	1414	{
1177	dREQ;	1415	dREQ;
1178		1416
1179	req->type = ix;	1417	req->type = EIO_MKNOD;
1180	req->fh = newSVsv (oldpath);	1418	req->int2 = (mode_t)mode;
1181	req->data2ptr = SvPVbyte_nolen (req->fh);	1419	req->offs = dev;
1182	req->data = newSVsv (newpath);	1420	req_set_path1 (req, pathname);
1183	req->dataptr = SvPVbyte_nolen (req->data);
1184		1421
1185	REQ_SEND;	1422	REQ_SEND;
1186	}	1423	}
1187		1424
1188	void	1425	void
		1426	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1427	ALIAS:
		1428	aio_mtouch = EIO_MTOUCH
		1429	aio_msync = EIO_MSYNC
		1430	PPCODE:
		1431	{
		1432	STRLEN svlen;
		1433	char *svptr = SvPVbyte (data, svlen);
		1434	UV len = SvUV (length);
		1435
		1436	if (offset < 0)
		1437	offset += svlen;
		1438
		1439	if (offset < 0 || offset > svlen)
		1440	croak ("offset outside of scalar");
		1441
		1442	if (!SvOK (length) || len + offset > svlen)
		1443	len = svlen - offset;
		1444
		1445	{
		1446	dREQ;
		1447
		1448	req->type = ix;
		1449	req->sv2 = SvREFCNT_inc (data);
		1450	req->ptr2 = (char *)svptr + offset;
		1451	req->size = len;
		1452	req->int1 = flags;
		1453
		1454	REQ_SEND;
		1455	}
		1456	}
		1457
		1458	void
		1459	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1460	PPCODE:
		1461	{
		1462	STRLEN svlen;
		1463	char *svptr = SvPVbyte (data, svlen);
		1464	UV len = SvUV (length);
		1465
		1466	if (offset < 0)
		1467	offset += svlen;
		1468
		1469	if (offset < 0 || offset > svlen)
		1470	croak ("offset outside of scalar");
		1471
		1472	if (!SvOK (length) || len + offset > svlen)
		1473	len = svlen - offset;
		1474
		1475	{
		1476	dREQ;
		1477
		1478	req->type = EIO_MLOCK;
		1479	req->sv2 = SvREFCNT_inc (data);
		1480	req->ptr2 = (char *)svptr + offset;
		1481	req->size = len;
		1482
		1483	REQ_SEND;
		1484	}
		1485	}
		1486
		1487	void
		1488	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1489	PPCODE:
		1490	{
		1491	dREQ;
		1492
		1493	req->type = EIO_MLOCKALL;
		1494	req->int1 = flags;
		1495
		1496	REQ_SEND;
		1497	}
		1498
		1499	void
1189	aio_sleep (delay,callback=&PL_sv_undef)	1500	aio_busy (double delay, SV *callback=&PL_sv_undef)
1190	double delay
1191	SV * callback
1192	PPCODE:	1501	PPCODE:
1193	{	1502	{
1194	dREQ;	1503	dREQ;
1195		1504
1196	req->type = REQ_SLEEP;	1505	req->type = EIO_BUSY;
1197	req->fd = delay < 0. ? 0 : delay;	1506	req->nv1 = delay < 0. ? 0. : delay;
1198	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1199		1507
1200	REQ_SEND;	1508	REQ_SEND;
1201	}	1509	}
1202		1510
1203	void	1511	void
1204	aio_group (callback=&PL_sv_undef)	1512	aio_group (SV *callback=&PL_sv_undef)
1205	SV * callback
1206	PROTOTYPE: ;$
1207	PPCODE:	1513	PPCODE:
1208	{	1514	{
1209	dREQ;	1515	dREQ;
		1516
1210	req->type = REQ_GROUP;	1517	req->type = EIO_GROUP;
		1518
1211	req_send (req);	1519	req_submit (req);
1212	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1520	XPUSHs (req_sv (req, aio_grp_stash));
1213	}	1521	}
		1522
		1523	void
		1524	aio_nop (SV *callback=&PL_sv_undef)
		1525	ALIAS:
		1526	aio_nop = EIO_NOP
		1527	aio_sync = EIO_SYNC
		1528	PPCODE:
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533
		1534	REQ_SEND;
		1535	}
		1536
		1537	int
		1538	aioreq_pri (int pri = 0)
		1539	CODE:
		1540	RETVAL = next_pri;
		1541	if (items > 0)
		1542	{
		1543	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1544	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1545	next_pri = pri;
		1546	}
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void
		1551	aioreq_nice (int nice = 0)
		1552	CODE:
		1553	nice = next_pri - nice;
		1554	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1555	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1556	next_pri = nice;
1214		1557
1215	void	1558	void
1216	flush ()	1559	flush ()
1217	PROTOTYPE:
1218	CODE:	1560	CODE:
1219	while (nreqs)	1561	while (eio_nreqs ())
1220	{	1562	{
1221	poll_wait ();	1563	poll_wait ();
1222	poll_cb ();	1564	poll_cb ();
1223	}	1565	}
1224		1566
1225	void
1226	poll()
1227	PROTOTYPE:
1228	CODE:
1229	if (nreqs)
1230	{
1231	poll_wait ();
1232	poll_cb ();
1233	}
1234
1235	int	1567	int
1236	poll_fileno()	1568	poll ()
1237	PROTOTYPE:
1238	CODE:	1569	CODE:
1239	RETVAL = respipe [0];	1570	poll_wait ();
1240	OUTPUT:
1241	RETVAL
1242
1243	int
1244	poll_cb(...)
1245	PROTOTYPE:
1246	CODE:
1247	RETVAL = poll_cb ();	1571	RETVAL = poll_cb ();
1248	OUTPUT:	1572	OUTPUT:
1249	RETVAL	1573	RETVAL
1250		1574
1251	void
1252	poll_wait()
1253	PROTOTYPE:
1254	CODE:
1255	if (nreqs)
1256	poll_wait ();
1257
1258	int	1575	int
1259	nreqs()	1576	poll_fileno ()
1260	PROTOTYPE:
1261	CODE:	1577	CODE:
1262	RETVAL = nreqs;	1578	RETVAL = s_epipe_fd (&respipe);
1263	OUTPUT:	1579	OUTPUT:
1264	RETVAL	1580	RETVAL
1265		1581
		1582	int
		1583	poll_cb (...)
		1584	PROTOTYPE:
		1585	CODE:
		1586	RETVAL = poll_cb ();
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	void
		1591	poll_wait ()
		1592	CODE:
		1593	poll_wait ();
		1594
		1595	int
		1596	nreqs ()
		1597	CODE:
		1598	RETVAL = eio_nreqs ();
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	int
		1603	nready ()
		1604	CODE:
		1605	RETVAL = eio_nready ();
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609	int
		1610	npending ()
		1611	CODE:
		1612	RETVAL = eio_npending ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	nthreads ()
		1618	CODE:
		1619	RETVAL = eio_nthreads ();
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	int
		1624	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1625	CODE:
		1626	RETVAL = posix_fadvise (fh, offset, length, advice);
		1627	OUTPUT:
		1628	RETVAL
		1629
		1630	IV
		1631	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1632	CODE:
		1633	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1634	OUTPUT:
		1635	RETVAL
		1636
		1637	void
		1638	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1639	PPCODE:
		1640	sv_unmagic (scalar, MMAP_MAGIC);
		1641	{
		1642	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1643	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1644	if (addr == (void *)-1)
		1645	XSRETURN_NO;
		1646
		1647	sv_force_normal (scalar);
		1648
		1649	/* we store the length in mg_obj, as namlen is I32 :/ */
		1650	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1651	->mg_obj = (SV *)length;
		1652
		1653	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1654
		1655	if (!(prot & PROT_WRITE))
		1656	SvREADONLY_on (scalar);
		1657
		1658	if (SvLEN (scalar))
		1659	Safefree (SvPVX (scalar));
		1660
		1661	SvPVX (scalar) = (char *)addr;
		1662	SvCUR_set (scalar, length);
		1663	SvLEN_set (scalar, 0);
		1664	SvPOK_only (scalar);
		1665
		1666	XSRETURN_YES;
		1667	}
		1668
		1669	void
		1670	munmap (SV *scalar)
		1671	CODE:
		1672	sv_unmagic (scalar, MMAP_MAGIC);
		1673
		1674	int
		1675	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1676	ALIAS:
		1677	mprotect = 1
		1678	CODE:
		1679	{
		1680	STRLEN svlen;
		1681	void *addr = SvPVbyte (scalar, svlen);
		1682	size_t len = SvUV (length);
		1683
		1684	if (offset < 0)
		1685	offset += svlen;
		1686
		1687	if (offset < 0 || offset > svlen)
		1688	croak ("offset outside of scalar");
		1689
		1690	if (!SvOK (length) || len + offset > svlen)
		1691	len = svlen - offset;
		1692
		1693	addr = (void *)(((intptr_t)addr) + offset);
		1694	eio_page_align (&addr, &len);
		1695
		1696	switch (ix)
		1697	{
		1698	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1699	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1700	}
		1701	}
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
		1706	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1707	CODE:
		1708	{
		1709	STRLEN svlen;
		1710	void *addr = SvPVbyte (scalar, svlen);
		1711	size_t len = SvUV (length);
		1712
		1713	if (offset < 0)
		1714	offset += svlen;
		1715
		1716	if (offset < 0 || offset > svlen)
		1717	croak ("offset outside of scalar");
		1718
		1719	if (!SvOK (length) || len + offset > svlen)
		1720	len = svlen - offset;
		1721
		1722	addr = (void *)(((intptr_t)addr) + offset);
		1723	eio_page_align (&addr, &len);
		1724	#if _POSIX_MEMLOCK_RANGE
		1725	RETVAL = munlock (addr, len);
		1726	#else
		1727	RETVAL = ((errno = ENOSYS), -1);
		1728	#endif
		1729	}
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	munlockall ()
		1735	CODE:
		1736	#if _POSIX_MEMLOCK
		1737	munlockall ();
		1738	#else
		1739	RETVAL = -1;
		1740	errno = ENOSYS;
		1741	#endif
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void _on_next_submit (SV *cb)
		1746	CODE:
		1747	SvREFCNT_dec (on_next_submit);
		1748	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1749
1266	PROTOTYPES: DISABLE	1750	PROTOTYPES: DISABLE
1267		1751
		1752	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1753
		1754	BOOT:
		1755	{
		1756	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1757	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1758	}
		1759
		1760	void
		1761	DESTROY (SV *self)
		1762	CODE:
		1763	{
		1764	aio_wd wd = SvAIO_WD (self);
		1765	#if HAVE_AT
		1766	SV *callback = &PL_sv_undef;
		1767	dREQ; /* clobbers next_pri :/ */
		1768	req->type = EIO_WD_CLOSE;
		1769	req->wd = wd;
		1770	REQ_SEND;
		1771	#else
		1772	eio_wd_close_sync (wd);
		1773	#endif
		1774	}
		1775
1268	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1776	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1269		1777
1270	void	1778	void
1271	cancel (aio_req_ornot req)	1779	cancel (aio_req_ornot req)
1272	PROTOTYPE:
1273	CODE:	1780	CODE:
1274	req_cancel (req);	1781	eio_cancel (req);
		1782
		1783	void
		1784	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1785	PPCODE:
		1786	{
		1787	if (GIMME_V != G_VOID)
		1788	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1789
		1790	if (items > 1)
		1791	{
		1792	SV *cb_cv =get_cb (callback);
		1793
		1794	SvREFCNT_dec (req->callback);
		1795	req->callback = SvREFCNT_inc (cb_cv);
		1796	}
		1797	}
1275		1798
1276	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1799	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1277		1800
1278	void	1801	void
1279	add (aio_req grp, ...)	1802	add (aio_req grp, ...)
1280	PPCODE:	1803	PPCODE:
1281	{	1804	{
1282	int i;	1805	int i;
1283		1806
1284	if (grp->fd == 2)	1807	if (grp->int1 == 2)
1285	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1808	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1286		1809
1287	for (i = 1; i < items; ++i )	1810	for (i = 1; i < items; ++i )
1288	{	1811	{
		1812	aio_req req;
		1813
1289	if (GIMME_V != G_VOID)	1814	if (GIMME_V != G_VOID)
1290	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1815	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1291		1816
1292	aio_req req = SvAIO_REQ (ST (i));	1817	req = SvAIO_REQ (ST (i));
1293		1818
1294	if (req)	1819	if (req)
1295	{	1820	eio_grp_add (grp, req);
1296	++grp->length;
1297	req->grp = grp;
1298
1299	req->grp_prev = 0;
1300	req->grp_next = grp->grp_first;
1301
1302	if (grp->grp_first)
1303	grp->grp_first->grp_prev = req;
1304
1305	grp->grp_first = req;
1306	}
1307	}	1821	}
1308	}	1822	}
		1823
		1824	void
		1825	cancel_subs (aio_req_ornot req)
		1826	CODE:
		1827	req_cancel_subs (req);
1309		1828
1310	void	1829	void
1311	result (aio_req grp, ...)	1830	result (aio_req grp, ...)
1312	CODE:	1831	CODE:
1313	{	1832	{
1314	int i;	1833	int i;
		1834	AV *av;
		1835
		1836	grp->errorno = errno;
		1837
1315	AV *av = newAV ();	1838	av = newAV ();
		1839	av_extend (av, items - 1);
1316		1840
1317	for (i = 1; i < items; ++i )	1841	for (i = 1; i < items; ++i )
1318	av_push (av, newSVsv (ST (i)));	1842	av_push (av, newSVsv (ST (i)));
1319		1843
1320	SvREFCNT_dec (grp->data);	1844	SvREFCNT_dec (grp->sv1);
1321	grp->data = (SV *)av;	1845	grp->sv1 = (SV *)av;
1322	}	1846	}
1323		1847
1324	void	1848	void
1325	lock (aio_req grp)	1849	errno (aio_req grp, int errorno = errno)
1326	CODE:	1850	CODE:
1327	++grp->length;	1851	grp->errorno = errorno;
1328		1852
1329	void	1853	void
1330	unlock (aio_req grp)
1331	CODE:
1332	aio_grp_dec (grp);
1333
1334	void
1335	feeder_limit (aio_req grp, int limit)	1854	limit (aio_req grp, int limit)
1336	CODE:	1855	CODE:
1337	grp->fd2 = limit;	1856	eio_grp_limit (grp, limit);
1338	aio_grp_feed (grp);
1339		1857
1340	void	1858	void
1341	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1859	feed (aio_req grp, SV *callback=&PL_sv_undef)
1342	CODE:	1860	CODE:
1343	{	1861	{
1344	SvREFCNT_dec (grp->fh2);	1862	SvREFCNT_dec (grp->sv2);
1345	grp->fh2 = newSVsv (callback);	1863	grp->sv2 = newSVsv (callback);
		1864	grp->feed = aio_grp_feed;
1346		1865
1347	if (grp->fd2 <= 0)	1866	if (grp->int2 <= 0)
1348	grp->fd2 = 2;	1867	grp->int2 = 2;
1349		1868
1350	aio_grp_feed (grp);	1869	eio_grp_limit (grp, grp->int2);
1351	}	1870	}
1352		1871

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