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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 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;
93	typedef aio_cb *aio_group;	338	typedef eio_wd aio_wd;
94		339
95	static int started, wanted;	340	static SV *on_next_submit;
96	static volatile int nreqs;	341	static int next_pri = EIO_PRI_DEFAULT;
97	static int max_outstanding = 1<<30;	342	static int max_outstanding;
98	static int respipe [2];
99		343
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	344	static s_epipe respipe;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		345
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	346	static void req_destroy (aio_req req);
105	static volatile aio_req ress, rese; /* queue start, queue end */
106
107	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	}
108		362
109	/* must be called at most once */	363	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
111	{	366	{
		367	if (!req->self)
		368	{
112	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		371	}
114		372
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
116	}	374	}
117		375
118	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
119	{	378	{
120	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")))
121	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
122		393
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		395
125	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	397	}
127		398
128	static void poll_wait ()	399	static aio_wd
		400	SvAIO_WD (SV *sv)
129	{	401	{
130	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))
131	{	414	{
132	fd_set rfd;	415	dSP;
133	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);
135		416
136	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;
137	}	426	}
138	}	427	}
139		428
140	static void req_invoke (aio_req req)	429	static void
		430	req_submit (eio_req *req)
141	{	431	{
142	dSP;	432	eio_submit (req);
143	int errorno = errno;
144		433
145	if (req->cancelled || !SvOK (req->callback))	434	if (expect_false (on_next_submit))
146	return;
147
148	errno = req->errorno;
149
150	ENTER;
151	PUSHMARK (SP);
152
153	switch (req->type)
154	{	435	{
155	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))
156	{	466	{
157	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	}
158		476
159	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:
160	{	484	{
161	char *buf = req->data2ptr;	485	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		486
164	while (req->result)	487	if (req->result >= 0)
165	{	488	{
		489	int i;
		490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	492	AV *av = newAV ();
167		493
168	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);
169	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
170	req->result--;	531	}
		532	}
		533
		534	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	535	}
172		536
173	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))));
174	}	541	}
		542	break;
175		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
176	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;
177	}	665	}
178	break;
179		666
180	case REQ_OPEN:	667	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		668
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	669	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	671	SPAGAIN;
189		672
190	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;
191		677
192	PUSHMARK (SP);	678	FREETMPS;
193	XPUSHs (sv_2mortal (fh));	679	LEAVE;
194	}
195	break;
196		680
197	case REQ_SLEEP:	681	PUTBACK;
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}	682	}
205		683
206		684	return !!SvTRUE (ERRSV);
207	PUTBACK;
208	call_sv (req->callback, G_VOID | G_EVAL);
209	SPAGAIN;
210
211	if (SvTRUE (ERRSV))
212	{
213	req_free (req);
214	croak (0);
215	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	685	}
221		686
222	static void req_free (aio_req req)	687	static void
		688	req_destroy (aio_req req)
223	{	689	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	690	if (req->self)
240	{	691	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
243	}	694	}
244		695
245	if (req->data)
246	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	696	SvREFCNT_dec (req->sv1);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	697	SvREFCNT_dec (req->sv2);
253		698	SvREFCNT_dec (req->sv3);
254	if (req->statdata)	699	SvREFCNT_dec (req->sv4);
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
259		701
260	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);
262
263	Safefree (req);	702	free (req);
264	}	703	}
265		704
266	static void req_cancel (aio_req req)	705	static void
		706	req_cancel_subs (aio_req grp)
267	{	707	{
268	req->cancelled = 1;
269
270	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 ())
271	{	728	{
272	aio_req sub;	729	int size;
273		730
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	731	X_LOCK (reslock);
275	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);
276	}	741	}
277	}	742	}
278		743
279	static int poll_cb ()	744	static int
		745	poll_cb (void)
280	{	746	{
281	dSP;
282	int count = 0;
283	int do_croak = 0;
284	aio_req req;
285
286	for (;;)	747	for (;;)
287	{	748	{
288	pthread_mutex_lock (&reslock);	749	int res = eio_poll ();
289	req = ress;
290		750
291	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)
292	{	862	{
293	ress = req->next;	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
294		865
295	if (!ress)	866	if (SvOK (wdob))
296	{	867	{
297	/* read any signals sent by the worker threads */	868	*wd = SvAIO_WD (wdob);
298	char buf [32];	869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
299	while (read (respipe [0], buf, 32) == 32)
300	;
301
302	rese = 0;
303	}	870	}
		871	else
		872	*wd = EIO_INVALID_WD;
304	}	873	}
305		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
306	pthread_mutex_unlock (&reslock);
307
308	if (!req)
309	break;
310
311	nreqs--;
312
313	if (req->type == REQ_QUIT)
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{	875	{
319	if (req->type == REQ_READ)	876	*wd = (aio_wd)(long)SvIVX (rv);
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	877	*wdsv = SvREFCNT_inc_NN (rv);
321		878	*ptr = ".";
322	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	879	return; /* path set to "." */
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}
339
340	return count;
341	}
342
343	static void *aio_proc(void *arg);
344
345	static void start_thread (void)
346	{
347	sigset_t fullsigset, oldsigset;
348	pthread_t tid;
349	pthread_attr_t attr;
350
351	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354
355	sigfillset (&fullsigset);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357
358	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
359	started++;
360
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);
362	}
363
364	static void req_send (aio_req req)
365	{
366	while (started < wanted && nreqs >= started)
367	start_thread ();
368
369	nreqs++;
370
371	pthread_mutex_lock (&reqlock);
372
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}
397
398	static void end_thread (void)
399	{
400	aio_req req;
401	Newz (0, req, 1, aio_cb);
402	req->type = REQ_QUIT;
403
404	req_send (req);
405	}
406
407	static void min_parallel (int nthreads)
408	{
409	if (wanted < nthreads)
410	wanted = nthreads;
411	}
412
413	static void max_parallel (int nthreads)
414	{
415	int cur = started;
416
417	if (wanted > nthreads)
418	wanted = nthreads;
419
420	while (cur > wanted)
421	{
422	end_thread ();
423	cur--;
424	}
425
426	while (started > wanted)
427	{
428	poll_wait ();
429	poll_cb ();
430	}
431	}
432
433	static void create_pipe ()
434	{
435	if (pipe (respipe))
436	croak ("unable to initialize result pipe");
437
438	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
439	croak ("cannot set result pipe to nonblocking mode");
440
441	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
442	croak ("cannot set result pipe to nonblocking mode");
443	}
444
445	/*****************************************************************************/
446	/* work around various missing functions */
447
448	#if !HAVE_PREADWRITE
449	# define pread aio_pread
450	# define pwrite aio_pwrite
451
452	/*
453	* make our pread/pwrite safe against themselves, but not against
454	* normal read/write by using a mutex. slows down execution a lot,
455	* but that's your problem, not mine.
456	*/
457	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
458
459	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
460	{
461	ssize_t res;
462	off_t ooffset;
463
464	pthread_mutex_lock (&preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);
470
471	return res;
472	}
473
474	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
475	{
476	ssize_t res;
477	off_t ooffset;
478
479	pthread_mutex_lock (&preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);
485
486	return res;
487	}
488	#endif
489
490	#if !HAVE_FDATASYNC
491	# define fdatasync fsync
492	#endif
493
494	#if !HAVE_READAHEAD
495	# define readahead aio_readahead
496
497	static ssize_t readahead (int fd, off_t offset, size_t count)
498	{
499	char readahead_buf[4096];
500
501	while (count > 0)
502	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
504
505	pread (fd, readahead_buf, len, offset);
506	offset += len;
507	count -= len;
508	}
509
510	errno = 0;
511	}
512	#endif
513
514	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r
516
517	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
518
519	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
520	{
521	struct dirent *e;
522	int errorno;
523
524	pthread_mutex_lock (&readdirlock);
525
526	e = readdir (dirp);
527	errorno = errno;
528
529	if (e)
530	{
531	*res = ent;
532	strcpy (ent->d_name, e->d_name);
533	}
534	else
535	*res = 0;
536
537	pthread_mutex_unlock (&readdirlock);
538
539	errno = errorno;
540	return e ? 0 : -1;
541	}
542	#endif
543
544	/* sendfile always needs emulation */
545	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
546	{
547	ssize_t res;
548
549	if (!count)
550	return 0;
551
552	#if HAVE_SENDFILE
553	# if __linux
554	res = sendfile (ofd, ifd, &offset, count);
555
556	# elif __freebsd
557	/*
558	* Of course, the freebsd sendfile is a dire hack with no thoughts
559	* wasted on making it similar to other I/O functions.
560	*/
561	{
562	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564
565	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
567	res = sbytes;
568	}
569
570	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);
572
573	# elif __solaris
574	{
575	struct sendfilevec vec;
576	size_t sbytes;
577
578	vec.sfv_fd = ifd;
579	vec.sfv_flag = 0;
580	vec.sfv_off = offset;
581	vec.sfv_len = count;
582
583	res = sendfilev (ofd, &vec, 1, &sbytes);
584
585	if (res < 0 && sbytes)
586	res = sbytes;
587	}
588
589	# endif
590	#else
591	res = -1;
592	errno = ENOSYS;
593	#endif
594
595	if (res < 0
596	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
597	#if __solaris
598	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
599	#endif
600	)
601	)
602	{
603	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];
605	res = 0;
606
607	while (count)
608	{
609	ssize_t cnt;
610
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
612
613	if (cnt <= 0)
614	{
615	if (cnt && !res) res = -1;
616	break;
617	}
618
619	cnt = write (ofd, buf, cnt);
620
621	if (cnt <= 0)
622	{
623	if (cnt && !res) res = -1;
624	break;
625	}
626
627	offset += cnt;
628	res += cnt;
629	count -= cnt;
630	}
631	}
632
633	return res;
634	}
635
636	/* read a full directory */
637	static int scandir_ (const char *path, void **namesp)
638	{
639	DIR *dirp = opendir (path);
640	union
641	{
642	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;
645	struct dirent *entp;
646	char *name, *names;
647	int memlen = 4096;
648	int memofs = 0;
649	int res = 0;
650	int errorno;
651
652	if (!dirp)
653	return -1;
654
655	names = malloc (memlen);
656
657	for (;;)
658	{
659	errno = 0, readdir_r (dirp, &u.d, &entp);
660
661	if (!entp)
662	break;
663
664	name = entp->d_name;
665
666	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667	{
668	int len = strlen (name) + 1;
669
670	res++;
671
672	while (memofs + len > memlen)
673	{
674	memlen *= 2;
675	names = realloc (names, memlen);
676	if (!names)
677	break;
678	}
679
680	memcpy (names + memofs, name, len);
681	memofs += len;
682	}
683	}
684
685	errorno = errno;
686	closedir (dirp);
687
688	if (errorno)
689	{
690	free (names);
691	errno = errorno;
692	res = -1;
693	}
694
695	*namesp = (void *)names;
696	return res;
697	}
698
699	/*****************************************************************************/
700
701	static void *aio_proc (void *thr_arg)
702	{
703	aio_req req;
704	int type;
705
706	do
707	{
708	pthread_mutex_lock (&reqlock);
709
710	for (;;)
711	{
712	req = reqs;
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719
720	if (req)
721	break;
722
723	pthread_cond_wait (&reqwait, &reqlock);
724	}
725
726	pthread_mutex_unlock (&reqlock);
727
728	errno = 0; /* strictly unnecessary */
729
730	if (!req->cancelled)
731	switch (req->type)
732	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
735
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
737	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
738
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
742
743	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
744	case REQ_CLOSE: req->result = close (req->fd); break;
745	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
746	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
747	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
750
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754
755	case REQ_SLEEP:
756	{
757	struct timeval tv;
758
759	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;
761
762	req->result = select (0, 0, 0, 0, &tv);
763	}
764
765	case REQ_QUIT:
766	break;
767
768	default:
769	req->result = ENOSYS;
770	break;
771	}
772
773	req->errorno = errno;
774
775	pthread_mutex_lock (&reslock);
776
777	req->next = 0;
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}	880	}
784	else	881	else
785	{	882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);
790	}
791
792	pthread_mutex_unlock (&reslock);
793	}	883	}
794	while (type != REQ_QUIT);
795		884
796	return 0;	885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
797	}	887	}
798		888
799	/*****************************************************************************/	889	static void ecb_noinline
800		890	req_set_path1 (aio_req req, SV *path)
801	static void atfork_prepare (void)
802	{	891	{
803	pthread_mutex_lock (&reqlock);	892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
804	pthread_mutex_lock (&reslock);
805	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);
807	#endif
808	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);
810	#endif
811	}	893	}
812		894
813	static void atfork_parent (void)	895	static void ecb_noinline
		896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
814	{	897	{
815	#if !HAVE_READDIR_R	898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
816	pthread_mutex_unlock (&readdirlock);
817	#endif
818	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);
820	#endif
821	pthread_mutex_unlock (&reslock);
822	pthread_mutex_unlock (&reqlock);
823	}
824		899
825	static void atfork_child (void)	900	switch (SvTYPE (rv))
826	{
827	aio_req prv;
828
829	started = 0;
830
831	while (reqs)
832	{	901	{
833	prv = reqs;	902	case SVt_PVIO:
834	reqs = prv->next;	903	case SVt_PVLV:
835	req_free (prv);	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;
836	}	914	}
837
838	reqs = reqe = 0;
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848
849	close (respipe [0]);
850	close (respipe [1]);
851	create_pipe ();
852
853	atfork_parent ();
854	}	915	}
855		916
856	#define dREQ \	917	XS(boot_IO__AIO) ecb_cold;
857	aio_req req; \
858	\
859	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \
861	\
862	Newz (0, req, 1, aio_cb); \
863	if (!req) \
864	croak ("out of memory during aio_req allocation"); \
865	\
866	req->callback = newSVsv (callback)
867		918
868	#define REQ_SEND \
869	req_send (req); \
870	\
871	if (GIMME_V != G_VOID) \
872	XPUSHs (req_sv (req, AIO_REQ_KLASS));
873
874	MODULE = IO::AIO PACKAGE = IO::AIO	919	MODULE = IO::AIO PACKAGE = IO::AIO
875		920
876	PROTOTYPES: ENABLE	921	PROTOTYPES: ENABLE
877		922
878	BOOT:	923	BOOT:
879	{	924	{
		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)
		941
		942	const_iv (O_ASYNC)
		943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
		945
		946	const_iv (O_CLOEXEC)
		947	const_iv (O_NOCTTY)
		948	const_iv (O_NOFOLLOW)
		949	const_iv (O_NONBLOCK)
		950	const_iv (O_EXEC)
		951	const_iv (O_SEARCH)
		952	const_iv (O_DIRECTORY)
		953	const_iv (O_DSYNC)
		954	const_iv (O_RSYNC)
		955	const_iv (O_SYNC)
		956	const_iv (O_TTY_INIT)
		957
		958	const_iv (S_IFIFO)
		959	const_iv (S_IFCHR)
		960	const_iv (S_IFBLK)
		961	const_iv (S_IFLNK)
		962	const_iv (S_IFREG)
		963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
		967
		968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		974
		975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		976	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		977	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		978	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		979	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		980
		981	const_iv (ST_RDONLY)
		982	const_iv (ST_NOSUID)
		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)
		993
		994	const_iv (PROT_NONE)
		995	const_iv (PROT_EXEC)
		996	const_iv (PROT_READ)
		997	const_iv (PROT_WRITE)
		998
		999	/*const_iv (MAP_FIXED)*/
		1000	const_iv (MAP_PRIVATE)
		1001	const_iv (MAP_SHARED)
		1002	const_iv (MAP_ANONYMOUS)
		1003
		1004	/* linuxish */
		1005	const_iv (MAP_HUGETLB)
		1006	const_iv (MAP_LOCKED)
		1007	const_iv (MAP_NORESERVE)
		1008	const_iv (MAP_POPULATE)
		1009	const_iv (MAP_NONBLOCK)
		1010
		1011	const_eio (SEEK_SET)
		1012	const_eio (SEEK_CUR)
		1013	const_eio (SEEK_END)
		1014
		1015	const_eio (MCL_FUTURE)
		1016	const_eio (MCL_CURRENT)
		1017
		1018	const_eio (MS_ASYNC)
		1019	const_eio (MS_INVALIDATE)
		1020	const_eio (MS_SYNC)
		1021
		1022	const_eio (MT_MODIFY)
		1023
		1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1025	const_eio (SYNC_FILE_RANGE_WRITE)
		1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1027
		1028	const_eio (FALLOC_FL_KEEP_SIZE)
		1029
		1030	const_eio (READDIR_DENTS)
		1031	const_eio (READDIR_DIRS_FIRST)
		1032	const_eio (READDIR_STAT_ORDER)
		1033	const_eio (READDIR_FOUND_UNKNOWN)
		1034
		1035	const_eio (DT_UNKNOWN)
		1036	const_eio (DT_FIFO)
		1037	const_eio (DT_CHR)
		1038	const_eio (DT_DIR)
		1039	const_eio (DT_BLK)
		1040	const_eio (DT_REG)
		1041	const_eio (DT_LNK)
		1042	const_eio (DT_SOCK)
		1043	const_eio (DT_WHT)
		1044	};
		1045
880	HV *stash = gv_stashpv ("IO::AIO", 1);	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
881	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
882	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
883	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
884		1050
885	create_pipe ();	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
887	}
888		1053
		1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1055
		1056	reinit ();
		1057	}
		1058
889	void	1059	void
890	min_parallel (nthreads)	1060	reinit ()
891	int nthreads	1061	PROTOTYPE:
		1062
		1063	void
		1064	max_poll_reqs (unsigned int nreqs)
892	PROTOTYPE: $	1065	PROTOTYPE: $
		1066	CODE:
		1067	eio_set_max_poll_reqs (nreqs);
893		1068
894	void	1069	void
895	max_parallel (nthreads)	1070	max_poll_time (double nseconds)
896	int nthreads
897	PROTOTYPE: $	1071	PROTOTYPE: $
898
899	int
900	max_outstanding (nreqs)
901	int nreqs
902	PROTOTYPE: $
903	CODE:	1072	CODE:
904	RETVAL = max_outstanding;	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:
905	max_outstanding = nreqs;	1103	max_outstanding = maxreqs;
906		1104
907	void	1105	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
909	SV * pathname
910	int flags
911	int mode
912	SV * callback
913	PROTOTYPE: $$$;$
914	PPCODE:	1107	PPCODE:
915	{	1108	{
916	dREQ;	1109	dREQ;
917		1110
918	req->type = REQ_OPEN;	1111	req->type = EIO_WD_OPEN;
919	req->data = newSVsv (pathname);	1112	req_set_path1 (req, pathname);
920	req->dataptr = SvPVbyte_nolen (req->data);
921	req->fd = flags;
922	req->mode = mode;
923		1113
924	REQ_SEND;	1114	REQ_SEND;
925	}	1115	}
926		1116
927	void	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
928	aio_close (fh,callback=&PL_sv_undef)	1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
929	SV * fh
930	SV * callback
931	PROTOTYPE: $;$
932	ALIAS:	1133	ALIAS:
933	aio_close = REQ_CLOSE
934	aio_fsync = REQ_FSYNC	1134	aio_fsync = EIO_FSYNC
935	aio_fdatasync = REQ_FDATASYNC	1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
936	PPCODE:	1137	PPCODE:
937	{	1138	{
		1139	int fd = s_fileno_croak (fh, 0);
938	dREQ;	1140	dREQ;
939		1141
940	req->type = ix;	1142	req->type = ix;
941	req->fh = newSVsv (fh);	1143	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1144	req->int1 = fd;
943		1145
944	REQ_SEND (req);	1146	REQ_SEND;
945	}	1147	}
946		1148
947	void	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;
		1160	req->size = nbytes;
		1161	req->int2 = flags;
		1162
		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
		1198	#else
		1199	pipe (pipefd) < 0
		1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1201	#endif
		1202	|| close (pipefd [1]) < 0
		1203	)
		1204	abort (); /*D*/
		1205
		1206	close_fd = pipefd [0];
		1207	}
		1208
		1209	req->type = EIO_DUP2;
		1210	req->int1 = close_fd;
		1211	req->sv2 = newSVsv (fh);
		1212	req->int2 = fd;
		1213
		1214	REQ_SEND;
		1215	}
		1216
		1217	void
		1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1219	PPCODE:
		1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
		1223	dREQ;
		1224
		1225	req->type = EIO_SEEK;
		1226	req->sv1 = newSVsv (fh);
		1227	req->int1 = fd;
		1228	req->offs = SvVAL64 (offset);
		1229	req->int2 = whence;
		1230
		1231	REQ_SEND;
		1232	}
		1233
		1234	void
948	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
949	SV * fh
950	UV offset
951	UV length
952	SV * data
953	UV dataoffset
954	SV * callback
955	ALIAS:	1236	ALIAS:
956	aio_read = REQ_READ	1237	aio_read = EIO_READ
957	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
958	PROTOTYPE: $$$$$;$
959	PPCODE:	1239	PPCODE:
960	{	1240	{
961	aio_req req;
962	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
963	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
964		1244	UV len = SvUV (length);
965	SvUPGRADE (data, SVt_PV);
966	SvPOK_on (data);
967		1245
968	if (dataoffset < 0)	1246	if (dataoffset < 0)
969	dataoffset += svlen;	1247	dataoffset += svlen;
970		1248
971	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
972	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
973		1251
974	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
975	{	1253	{
976	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
977	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
978	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
979	}	1257	}
980	else	1258	else
981	{	1259	{
982	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
983	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
984	}	1263	}
985
986	if (length < 0)
987	croak ("length must not be negative");
988		1264
989	{	1265	{
990	dREQ;	1266	dREQ;
991		1267
992	req->type = ix;	1268	req->type = ix;
993	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
995	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
996	req->offset = offset;	1272	req->size = len;
997	req->length = length;
998	req->data = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
999	req->dataptr = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
		1275	req->stroffset = dataoffset;
1000		1276
1001	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1002	{	1278	{
1003	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1004	req->data2ptr = (void *)data;	1280	req->flags |= FLAG_SV2_RO_OFF;
1005	}	1281	}
1006		1282
1007	REQ_SEND;	1283	REQ_SEND;
1008	}	1284	}
1009	}	1285	}
1010		1286
1011	void	1287	void
1012	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1013	SV * out_fh	1289	ALIAS:
1014	SV * in_fh	1290	aio_readlink = EIO_READLINK
1015	UV in_offset	1291	aio_realpath = EIO_REALPATH
1016	UV length
1017	SV * callback
1018	PROTOTYPE: $$$$;$
1019	PPCODE:	1292	PPCODE:
1020	{	1293	{
		1294	dREQ;
		1295
		1296	req->type = ix;
		1297	req_set_path1 (req, pathname);
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
		1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1304	PPCODE:
		1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1021	dREQ;	1308	dREQ;
1022		1309
1023	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1024	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1025	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1026	req->fh2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1027	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1028	req->offset = in_offset;	1315	req->offs = in_offset;
1029	req->length = length;	1316	req->size = length;
1030		1317
1031	REQ_SEND;	1318	REQ_SEND;
1032	}	1319	}
1033		1320
1034	void	1321	void
1035	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1036	SV * fh
1037	UV offset
1038	IV length
1039	SV * callback
1040	PROTOTYPE: $$$;$
1041	PPCODE:	1323	PPCODE:
1042	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1043	dREQ;	1326	dREQ;
1044		1327
1045	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1046	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1047	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1048	req->offset = offset;	1331	req->offs = offset;
1049	req->length = length;	1332	req->size = length;
1050		1333
1051	REQ_SEND;	1334	REQ_SEND;
1052	}	1335	}
1053		1336
1054	void	1337	void
1055	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1056	SV * fh_or_path
1057	SV * callback
1058	ALIAS:	1339	ALIAS:
1059	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1060	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1061	PPCODE:	1343	PPCODE:
1062	{	1344	{
1063	dREQ;	1345	dREQ;
1064		1346
1065	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);
1066	if (!req->statdata)
1067	{
1068	req_free (req);
1069	croak ("out of memory during aio_req->statdata allocation");
1070	}
1071
1072	if (SvPOK (fh_or_path))
1073	{
1074	req->type = ix;
1075	req->data = newSVsv (fh_or_path);
1076	req->dataptr = SvPVbyte_nolen (req->data);
1077	}
1078	else
1079	{
1080	req->type = REQ_FSTAT;
1081	req->fh = newSVsv (fh_or_path);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1083	}
1084		1348
1085	REQ_SEND;	1349	REQ_SEND;
1086	}	1350	}
1087		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
1088	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
1089	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1090	SV * pathname
1091	SV * callback
1092	ALIAS:	1450	ALIAS:
1093	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1094	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1095	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1096	PPCODE:	1454	PPCODE:
1097	{	1455	{
1098	dREQ;	1456	dREQ;
1099		1457
1100	req->type = ix;	1458	req->type = ix;
1101	req->data = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1102	req->dataptr = SvPVbyte_nolen (req->data);	1460
1103
1104	REQ_SEND;	1461	REQ_SEND;
1105	}	1462	}
1106		1463
1107	void	1464	void
1108	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1109	SV * oldpath
1110	SV * newpath
1111	SV * callback
1112	ALIAS:	1466	ALIAS:
1113	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1114	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1115	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1116	PPCODE:	1470	PPCODE:
1117	{	1471	{
		1472	eio_wd wd2 = 0;
1118	dREQ;	1473	dREQ;
1119		1474
1120	req->type = ix;	1475	req->type = ix;
1121	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1122	req->data2ptr = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1123	req->data = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1124	req->dataptr = SvPVbyte_nolen (req->data);
1125		1479
1126	REQ_SEND;	1480	REQ_SEND;
1127	}	1481	}
1128		1482
1129	void	1483	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1131	double delay
1132	SV * callback
1133	PPCODE:	1485	PPCODE:
1134	{	1486	{
1135	dREQ;	1487	dREQ;
1136		1488
1137	req->type = REQ_SLEEP;	1489	req->type = EIO_MKNOD;
1138	req->fd = delay < 0. ? 0 : delay;	1490	req->int2 = (mode_t)mode;
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1491	req->offs = dev;
1140		1492	req_set_path1 (req, pathname);
		1493
1141	REQ_SEND;	1494	REQ_SEND;
1142	}	1495	}
1143		1496
1144	void	1497	void
1145	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)
1146	SV * callback	1499	ALIAS:
1147	PROTOTYPE: ;&	1500	aio_mtouch = EIO_MTOUCH
		1501	aio_msync = EIO_MSYNC
1148	PPCODE:	1502	PPCODE:
1149	{	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	{
1150	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
1151	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154		1590
1155	req_send (req);	1591	req_submit (req);
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1157	}	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;
1158		1629
1159	void	1630	void
1160	flush ()	1631	flush ()
1161	PROTOTYPE:
1162	CODE:	1632	CODE:
1163	while (nreqs)	1633	while (eio_nreqs ())
1164	{	1634	{
1165	poll_wait ();	1635	poll_wait ();
1166	poll_cb ();	1636	poll_cb ();
1167	}	1637	}
1168		1638
1169	void	1639	int
1170	poll()	1640	poll ()
1171	PROTOTYPE:
1172	CODE:	1641	CODE:
1173	if (nreqs)
1174	{
1175	poll_wait ();	1642	poll_wait ();
1176	poll_cb ();	1643	RETVAL = poll_cb ();
1177	}
1178
1179	int
1180	poll_fileno()
1181	PROTOTYPE:
1182	CODE:
1183	RETVAL = respipe [0];
1184	OUTPUT:	1644	OUTPUT:
1185	RETVAL	1645	RETVAL
1186		1646
1187	int	1647	int
		1648	poll_fileno ()
		1649	CODE:
		1650	RETVAL = s_epipe_fd (&respipe);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	int
1188	poll_cb(...)	1655	poll_cb (...)
1189	PROTOTYPE:	1656	PROTOTYPE:
1190	CODE:	1657	CODE:
1191	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1192	OUTPUT:	1659	OUTPUT:
1193	RETVAL	1660	RETVAL
1194		1661
1195	void	1662	void
1196	poll_wait()	1663	poll_wait ()
1197	PROTOTYPE:
1198	CODE:	1664	CODE:
1199	if (nreqs)
1200	poll_wait ();	1665	poll_wait ();
1201		1666
1202	int	1667	int
1203	nreqs()	1668	nreqs ()
1204	PROTOTYPE:
1205	CODE:	1669	CODE:
1206	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1207	OUTPUT:	1671	OUTPUT:
1208	RETVAL	1672	RETVAL
1209		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
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1853
1212	void	1854	void
1213	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1856	CODE:
1216	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	}
1217		1874
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1876
1220	void	1877	void
1221	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1879	PPCODE:
1224	{	1880	{
1225	int i;	1881	int i;
		1882
		1883	if (grp->int1 == 2)
		1884	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1885
1227	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1228	{	1887	{
1229	aio_req req = SvAIO_REQ (ST (i));	1888	aio_req req;
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237		1889
1238	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1892
		1893	req = SvAIO_REQ (ST (i));
		1894
		1895	if (req)
		1896	eio_grp_add (grp, req);
1240	}	1897	}
1241	}	1898	}
1242		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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