ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.55 by root, Mon Oct 23 00:47:29 2006 UTC vs.
Revision 1.209 by root, Sun Apr 1 17:46:02 2012 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
31	# include <sys/socket.h>	72	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
34	# else	298	# else
35	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	300	# endif
37	#endif	301	#endif
38		302	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	303	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	304	#endif
		305	#ifndef MAP_LOCKED
		306	# define MAP_LOCKED 0
		307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
43		317
44	#if __ia64	318	#ifndef makedev
45	# define STACKSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	320	#endif
47	# define STACKSIZE 8192	321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
		327
		328	#ifndef PAGESIZE
		329	# define PAGESIZE sysconf (_SC_PAGESIZE)
48	#endif	330	#endif
49		331
50	enum {	332	enum {
51	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
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 *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;	336	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
93		339
94	static int started, wanted;	340	static SV *on_next_submit;
95	static volatile int nreqs;	341	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	342	static int max_outstanding;
97	static int respipe [2];
98		343
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	344	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		345
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	346	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	347	static void req_cancel (aio_req req);
107	static void req_free (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	{
112	if (!req->self)	367	if (!req->self)
113	{	368	{
114	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	371	}
117		372
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	374	}
120		375
121	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
122	{	384	{
123	MAGIC *mg;	385	MAGIC *mg;
124		386
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	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")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
127		393
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		395
130	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	397	}
132		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
133	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
134	{	412	{
135	while (grp->length < grp->fd2)	413	if (grp->sv2 && SvOK (grp->sv2))
136	{	414	{
137	int old_len = grp->length;	415	dSP;
138		416
139	if (grp->fh2 && SvOK (grp->fh2))	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;
		426	}
		427	}
		428
		429	static void
		430	req_submit (eio_req *req)
		431	{
		432	eio_submit (req);
		433
		434	if (expect_false (on_next_submit))
		435	{
		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))
140	{	466	{
141	dSP;	467	sv_result = sv_result_cache; sv_result_cache = 0;
142		468	SvIV_set (sv_result, req->result);
143	ENTER;	469	SvIOK_only (sv_result);
144	SAVETMPS;
145	PUSHMARK (SP);
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147	PUTBACK;
148	call_sv (grp->fh2, G_VOID | G_EVAL);
149	SPAGAIN;
150	FREETMPS;
151	LEAVE;
152	}	470	}
153		471	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	472	{
157	SvREFCNT_dec (grp->fh2);	473	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	474	SvREADONLY_on (sv_result);
159	break;
160	}	475	}
		476
		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:
		484	{
		485	SV *rv = &PL_sv_undef;
		486
		487	if (req->result >= 0)
		488	{
		489	int i;
		490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		492	AV *av = newAV ();
		493
		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);
		530	names += SvCUR (name) + 1;
		531	}
		532	}
		533
		534	rv = sv_2mortal (newRV_noinc ((SV *)av));
		535	}
		536
		537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		541	}
		542	break;
		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
		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;
		665	}
		666
		667	errno = req->errorno;
		668
		669	PUTBACK;
		670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		671	SPAGAIN;
		672
		673	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		674	SvREFCNT_dec (sv_result);
		675	else
		676	sv_result_cache = sv_result;
		677
		678	FREETMPS;
		679	LEAVE;
		680
		681	PUTBACK;
161	}	682	}
162	}
163		683
164	static void aio_grp_dec (aio_req grp)	684	return !!SvTRUE (ERRSV);
165	{
166	--grp->length;
167
168	/* call feeder, if applicable */
169	aio_grp_feed (grp);
170
171	/* finish, if done */
172	if (!grp->length && grp->fd)
173	{
174	req_invoke (grp);
175	req_free (grp);
176	}
177	}	685	}
178		686
179	static void poll_wait ()	687	static void
		688	req_destroy (aio_req req)
180	{	689	{
181	if (nreqs && !ress)
182	{
183	fd_set rfd;
184	FD_ZERO(&rfd);
185	FD_SET(respipe [0], &rfd);
186
187	select (respipe [0] + 1, &rfd, 0, 0, 0);
188	}
189	}
190
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_NOP:
265	case REQ_SLEEP:
266	break;
267
268	default:
269	PUSHs (sv_2mortal (newSViv (req->result)));
270	break;
271	}
272
273
274	PUTBACK;
275	call_sv (req->callback, G_VOID | G_EVAL);
276	SPAGAIN;
277
278	FREETMPS;
279	LEAVE;
280
281	errno = errorno;
282
283	if (SvTRUE (ERRSV))
284	{
285	req_free (req);
286	croak (0);
287	}
288	}
289
290	static void req_free (aio_req req)
291	{
292	if (req->grp)
293	{
294	aio_req grp = req->grp;
295
296	/* unlink request */
297	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
298	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
299
300	if (grp->grp_first == req)
301	grp->grp_first = req->grp_next;
302
303	aio_grp_dec (grp);
304	}
305
306	if (req->self)	690	if (req->self)
307	{	691	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
310	}	694	}
311		695
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	696	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	697	SvREFCNT_dec (req->sv2);
		698	SvREFCNT_dec (req->sv3);
		699	SvREFCNT_dec (req->sv4);
315	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317		701
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320
321	Safefree (req);	702	free (req);
322	}	703	}
323		704
324	static void req_cancel (aio_req req)	705	static void
		706	req_cancel_subs (aio_req grp)
325	{	707	{
326	req->cancelled = 1;
327
328	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 ())
329	{	728	{
330	aio_req sub;	729	int size;
331		730
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	731	X_LOCK (reslock);
333	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);
334	}	741	}
335	}	742	}
336		743
337	static int poll_cb ()	744	static int
		745	poll_cb (void)
338	{	746	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	747	for (;;)
345	{	748	{
346	pthread_mutex_lock (&reslock);	749	int res = eio_poll ();
347	req = ress;
348		750
349	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)
350	{	862	{
351	ress = req->next;	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
352		865
353	if (!ress)	866	if (SvOK (wdob))
354	{	867	{
355	/* read any signals sent by the worker threads */	868	*wd = SvAIO_WD (wdob);
356	char buf [32];	869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}	870	}
		871	else
		872	*wd = EIO_INVALID_WD;
362	}	873	}
363		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
364	pthread_mutex_unlock (&reslock);
365
366	if (!req)
367	break;
368
369	--nreqs;
370
371	if (req->type == REQ_QUIT)
372	started--;
373	else if (req->type == REQ_GROUP && req->length)
374	{	875	{
375	req->fd = 1; /* mark request as delayed */	876	*wd = (aio_wd)(long)SvIVX (rv);
376	continue;	877	*wdsv = SvREFCNT_inc_NN (rv);
		878	*ptr = ".";
		879	return; /* path set to "." */
377	}	880	}
378	else	881	else
379	{	882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
380	if (req->type == REQ_READ)
381	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382
383	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
384	SvREADONLY_off (req->data);
385
386	if (req->statdata)
387	{
388	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389	PL_laststatval = req->result;
390	PL_statcache = *(req->statdata);
391	}
392
393	req_invoke (req);
394
395	count++;
396	}
397
398	req_free (req);
399	}	883	}
400		884
401	return count;	885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
402	}	887	}
403		888
404	static void *aio_proc(void *arg);	889	static void ecb_noinline
405		890	req_set_path1 (aio_req req, SV *path)
406	static void start_thread (void)
407	{	891	{
408	sigset_t fullsigset, oldsigset;	892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
409	pthread_t tid;
410	pthread_attr_t attr;
411
412	pthread_attr_init (&attr);
413	pthread_attr_setstacksize (&attr, STACKSIZE);
414	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415
416	sigfillset (&fullsigset);
417	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418
419	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
420	started++;
421
422	sigprocmask (SIG_SETMASK, &oldsigset, 0);
423	}	893	}
424		894
425	static void req_send (aio_req req)	895	static void ecb_noinline
		896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
426	{	897	{
427	while (started < wanted && nreqs >= started)	898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
428	start_thread ();
429		899
430	++nreqs;	900	switch (SvTYPE (rv))
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{	901	{
438	reqe->next = req;	902	case SVt_PVIO:
439	reqe = req;	903	case SVt_PVLV:
		904	case SVt_PVGV:
		905	req->type = type_fh;
		906	req->sv1 = newSVsv (fh_or_path);
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	break;
		909
		910	default:
		911	req->type = type_path;
		912	req_set_path1 (req, fh_or_path);
		913	break;
440	}	914	}
441	else
442	reqe = reqs = req;
443
444	pthread_cond_signal (&reqwait);
445	pthread_mutex_unlock (&reqlock);
446
447	if (nreqs > max_outstanding)
448	for (;;)
449	{
450	poll_cb ();
451
452	if (nreqs <= max_outstanding)
453	break;
454
455	poll_wait ();
456	}
457	}	915	}
458		916
459	static void end_thread (void)	917	XS(boot_IO__AIO) ecb_cold;
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464		918
465	req_send (req);	919	MODULE = IO::AIO PACKAGE = IO::AIO
466	}
467		920
468	static void min_parallel (int nthreads)	921	PROTOTYPES: ENABLE
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473		922
474	static void max_parallel (int nthreads)	923	BOOT:
475	{	924	{
476	int cur = started;	925	static const struct {
		926	const char *name;
		927	IV iv;
		928	} *civ, const_iv[] = {
		929	# define const_niv(name, value) { # name, (IV) value },
		930	# define const_iv(name) { # name, (IV) name },
		931	# define const_eio(name) { # name, (IV) EIO_ ## name },
		932	const_iv (EXDEV)
		933	const_iv (ENOSYS)
		934	const_iv (O_RDONLY)
		935	const_iv (O_WRONLY)
		936	const_iv (O_RDWR)
		937	const_iv (O_CREAT)
		938	const_iv (O_TRUNC)
		939	const_iv (O_EXCL)
		940	const_iv (O_APPEND)
477		941
478	if (wanted > nthreads)	942	const_iv (O_ASYNC)
479	wanted = nthreads;	943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
480		945
481	while (cur > wanted)	946	const_iv (O_CLOEXEC)
482	{	947	const_iv (O_NOCTTY)
483	end_thread ();	948	const_iv (O_NOFOLLOW)
484	cur--;	949	const_iv (O_NONBLOCK)
485	}	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)
486		957
487	while (started > wanted)	958	const_iv (S_IFIFO)
488	{	959	const_iv (S_IFCHR)
489	poll_wait ();	960	const_iv (S_IFBLK)
490	poll_cb ();	961	const_iv (S_IFLNK)
491	}	962	const_iv (S_IFREG)
492	}	963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
493		967
494	static void create_pipe ()	968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
495	{	969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
496	if (pipe (respipe))	970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
497	croak ("unable to initialize result pipe");	971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
498		974
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
500	croak ("cannot set result pipe to nonblocking mode");	976	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		977	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		978	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		979	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
501		980
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	981	const_iv (ST_RDONLY)
503	croak ("cannot set result pipe to nonblocking mode");	982	const_iv (ST_NOSUID)
504	}	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)
505		993
506	/*****************************************************************************/	994	const_iv (PROT_NONE)
507	/* work around various missing functions */	995	const_iv (PROT_EXEC)
		996	const_iv (PROT_READ)
		997	const_iv (PROT_WRITE)
508		998
509	#if !HAVE_PREADWRITE	999	/*const_iv (MAP_FIXED)*/
510	# define pread aio_pread	1000	const_iv (MAP_PRIVATE)
511	# define pwrite aio_pwrite	1001	const_iv (MAP_SHARED)
		1002	const_iv (MAP_ANONYMOUS)
512		1003
513	/*	1004	/* linuxish */
514	* make our pread/pwrite safe against themselves, but not against	1005	const_iv (MAP_HUGETLB)
515	* normal read/write by using a mutex. slows down execution a lot,	1006	const_iv (MAP_LOCKED)
516	* but that's your problem, not mine.	1007	const_iv (MAP_NORESERVE)
517	*/	1008	const_iv (MAP_POPULATE)
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	1009	const_iv (MAP_NONBLOCK)
519		1010
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1011	const_eio (SEEK_SET)
521	{	1012	const_eio (SEEK_CUR)
522	ssize_t res;	1013	const_eio (SEEK_END)
523	off_t ooffset;
524		1014
525	pthread_mutex_lock (&preadwritelock);	1015	const_eio (MCL_FUTURE)
526	ooffset = lseek (fd, 0, SEEK_CUR);	1016	const_eio (MCL_CURRENT)
527	lseek (fd, offset, SEEK_SET);
528	res = read (fd, buf, count);
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531		1017
532	return res;	1018	const_eio (MS_ASYNC)
533	}	1019	const_eio (MS_INVALIDATE)
		1020	const_eio (MS_SYNC)
534		1021
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1022	const_eio (MT_MODIFY)
536	{
537	ssize_t res;
538	off_t ooffset;
539		1023
540	pthread_mutex_lock (&preadwritelock);	1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
541	ooffset = lseek (fd, 0, SEEK_CUR);	1025	const_eio (SYNC_FILE_RANGE_WRITE)
542	lseek (fd, offset, SEEK_SET);	1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
543	res = write (fd, buf, count);
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546		1027
547	return res;	1028	const_eio (FALLOC_FL_KEEP_SIZE)
548	}
549	#endif
550		1029
551	#if !HAVE_FDATASYNC	1030	const_eio (READDIR_DENTS)
552	# define fdatasync fsync	1031	const_eio (READDIR_DIRS_FIRST)
553	#endif	1032	const_eio (READDIR_STAT_ORDER)
		1033	const_eio (READDIR_FOUND_UNKNOWN)
554		1034
555	#if !HAVE_READAHEAD	1035	const_eio (DT_UNKNOWN)
556	# define readahead aio_readahead	1036	const_eio (DT_FIFO)
557		1037	const_eio (DT_CHR)
558	static ssize_t readahead (int fd, off_t offset, size_t count)	1038	const_eio (DT_DIR)
559	{	1039	const_eio (DT_BLK)
560	char readahead_buf[4096];	1040	const_eio (DT_REG)
561		1041	const_eio (DT_LNK)
562	while (count > 0)	1042	const_eio (DT_SOCK)
563	{	1043	const_eio (DT_WHT)
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565
566	pread (fd, readahead_buf, len, offset);
567	offset += len;
568	count -= len;
569	}
570
571	errno = 0;
572	}
573	#endif
574
575	#if !HAVE_READDIR_R
576	# define readdir_r aio_readdir_r
577
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
579
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581	{
582	struct dirent *e;
583	int errorno;
584
585	pthread_mutex_lock (&readdirlock);
586
587	e = readdir (dirp);
588	errorno = errno;
589
590	if (e)
591	{
592	*res = ent;
593	strcpy (ent->d_name, e->d_name);
594	}
595	else
596	*res = 0;
597
598	pthread_mutex_unlock (&readdirlock);
599
600	errno = errorno;
601	return e ? 0 : -1;
602	}
603	#endif
604
605	/* sendfile always needs emulation */
606	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
607	{
608	ssize_t res;
609
610	if (!count)
611	return 0;
612
613	#if HAVE_SENDFILE
614	# if __linux
615	res = sendfile (ofd, ifd, &offset, count);
616
617	# elif __freebsd
618	/*
619	* Of course, the freebsd sendfile is a dire hack with no thoughts
620	* wasted on making it similar to other I/O functions.
621	*/
622	{
623	off_t sbytes;
624	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625
626	if (res < 0 && sbytes)
627	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
628	res = sbytes;
629	}	1044	};
630		1045
631	# elif __hpux	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
632	res = sendfile (ofd, ifd, offset, count, 0, 0);	1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
633		1050
634	# elif __solaris	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
635	{	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
636	struct sendfilevec vec;
637	size_t sbytes;
638		1053
639	vec.sfv_fd = ifd;	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643		1055
644	res = sendfilev (ofd, &vec, 1, &sbytes);	1056	reinit ();
		1057	}
645		1058
646	if (res < 0 && sbytes)	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
		1064	max_poll_reqs (unsigned int nreqs)
		1065	PROTOTYPE: $
		1066	CODE:
		1067	eio_set_max_poll_reqs (nreqs);
		1068
		1069	void
		1070	max_poll_time (double nseconds)
		1071	PROTOTYPE: $
		1072	CODE:
		1073	eio_set_max_poll_time (nseconds);
		1074
		1075	void
		1076	min_parallel (unsigned int nthreads)
		1077	PROTOTYPE: $
		1078	CODE:
		1079	eio_set_min_parallel (nthreads);
		1080
		1081	void
		1082	max_parallel (unsigned int nthreads)
		1083	PROTOTYPE: $
		1084	CODE:
		1085	eio_set_max_parallel (nthreads);
		1086
		1087	void
		1088	max_idle (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_max_idle (nthreads);
		1092
		1093	void
		1094	idle_timeout (unsigned int seconds)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_idle_timeout (seconds);
		1098
		1099	void
		1100	max_outstanding (unsigned int maxreqs)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	max_outstanding = maxreqs;
		1104
		1105	void
		1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1107	PPCODE:
		1108	{
		1109	dREQ;
		1110
		1111	req->type = EIO_WD_OPEN;
		1112	req_set_path1 (req, pathname);
		1113
		1114	REQ_SEND;
		1115	}
		1116
		1117	void
		1118	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
		1123	req->type = EIO_OPEN;
		1124	req_set_path1 (req, pathname);
		1125	req->int1 = flags;
		1126	req->int2 = mode;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1133	ALIAS:
		1134	aio_fsync = EIO_FSYNC
		1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
		1137	PPCODE:
		1138	{
		1139	int fd = s_fileno_croak (fh, 0);
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (fh);
		1144	req->int1 = fd;
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int fd = s_fileno_croak (fh, 0);
		1154	dREQ;
		1155
		1156	req->type = EIO_SYNC_FILE_RANGE;
		1157	req->sv1 = newSVsv (fh);
		1158	req->int1 = fd;
		1159	req->offs = offset;
647	res = sbytes;	1160	req->size = nbytes;
648	}	1161	req->int2 = flags;
649		1162
650	# endif	1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_FALLOCATE;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->int2 = mode;
		1177	req->offs = offset;
		1178	req->size = len;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
		1184	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1185	PPCODE:
		1186	{
		1187	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1188	int fd = s_fileno_croak (fh, 0);
		1189	dREQ;
		1190
		1191	if (expect_false (close_fd < 0))
		1192	{
		1193	int pipefd [2];
		1194
		1195	if (
		1196	#ifdef _WIN32
		1197	_pipe (pipefd, 1, _O_BINARY) < 0
651	#else	1198	#else
652	res = -1;	1199	pipe (pipefd) < 0
653	errno = ENOSYS;	1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
654	#endif	1201	#endif
655		1202	|| close (pipefd [1]) < 0
656	if (res < 0
657	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
658	#if __solaris
659	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
660	#endif
661	)
662	)
663	{
664	/* emulate sendfile. this is a major pain in the ass */
665	char buf[4096];
666	res = 0;
667
668	while (count)
669	{
670	ssize_t cnt;
671
672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673
674	if (cnt <= 0)
675	{	1203	)
676	if (cnt && !res) res = -1;	1204	abort (); /*D*/
677	break;
678	}
679		1205
680	cnt = write (ofd, buf, cnt);	1206	close_fd = pipefd [0];
681
682	if (cnt <= 0)
683	{
684	if (cnt && !res) res = -1;
685	break;
686	}
687
688	offset += cnt;
689	res += cnt;
690	count -= cnt;
691	}
692	}
693
694	return res;
695	}
696
697	/* read a full directory */
698	static int scandir_ (const char *path, void **namesp)
699	{
700	DIR *dirp = opendir (path);
701	union
702	{
703	struct dirent d;
704	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705	} u;
706	struct dirent *entp;
707	char *name, *names;
708	int memlen = 4096;
709	int memofs = 0;
710	int res = 0;
711	int errorno;
712
713	if (!dirp)
714	return -1;
715
716	names = malloc (memlen);
717
718	for (;;)
719	{
720	errno = 0, readdir_r (dirp, &u.d, &entp);
721
722	if (!entp)
723	break;
724
725	name = entp->d_name;
726
727	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728	{
729	int len = strlen (name) + 1;
730
731	res++;
732
733	while (memofs + len > memlen)
734	{
735	memlen *= 2;
736	names = realloc (names, memlen);
737	if (!names)
738	break;
739	}
740
741	memcpy (names + memofs, name, len);
742	memofs += len;
743	}
744	}
745
746	errorno = errno;
747	closedir (dirp);
748
749	if (errorno)
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755
756	*namesp = (void *)names;
757	return res;
758	}
759
760	/*****************************************************************************/
761
762	static void *aio_proc (void *thr_arg)
763	{
764	aio_req req;
765	int type;
766
767	do
768	{
769	pthread_mutex_lock (&reqlock);
770
771	for (;;)
772	{
773	req = reqs;
774
775	if (reqs)
776	{
777	reqs = reqs->next;
778	if (!reqs) reqe = 0;
779	}
780
781	if (req)
782	break;
783
784	pthread_cond_wait (&reqwait, &reqlock);
785	}
786
787	pthread_mutex_unlock (&reqlock);
788
789	errno = 0; /* strictly unnecessary */
790
791	if (!req->cancelled)
792	switch (type = req->type) /* remember type for QUIT check */
793	{
794	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
795	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
796
797	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
798	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
799
800	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803
804	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
805	case REQ_CLOSE: req->result = close (req->fd); break;
806	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
807	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
808	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
809	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811
812	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813	case REQ_FSYNC: req->result = fsync (req->fd); break;
814	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
815
816	case REQ_SLEEP:
817	{
818	struct timeval tv;
819
820	tv.tv_sec = req->fd;
821	tv.tv_usec = req->fd2;
822
823	req->result = select (0, 0, 0, 0, &tv);
824	}
825
826	case REQ_GROUP:
827	case REQ_NOP:
828	case REQ_QUIT:
829	break;
830
831	default:
832	req->result = ENOSYS;
833	break;
834	}	1207	}
835		1208
836	req->errorno = errno;	1209	req->type = EIO_DUP2;
837		1210	req->int1 = close_fd;
838	pthread_mutex_lock (&reslock);	1211	req->sv2 = newSVsv (fh);
839
840	req->next = 0;	1212	req->int2 = fd;
841		1213
842	if (rese)	1214	REQ_SEND;
843	{
844	rese->next = req;
845	rese = req;
846	}
847	else
848	{
849	rese = ress = req;
850
851	/* write a dummy byte to the pipe so fh becomes ready */
852	write (respipe [1], &respipe, 1);
853	}
854
855	pthread_mutex_unlock (&reslock);
856	}
857	while (type != REQ_QUIT);
858
859	return 0;
860	}	1215	}
861		1216
862	/*****************************************************************************/
863
864	static void atfork_prepare (void)
865	{
866	pthread_mutex_lock (&reqlock);
867	pthread_mutex_lock (&reslock);
868	#if !HAVE_PREADWRITE
869	pthread_mutex_lock (&preadwritelock);
870	#endif
871	#if !HAVE_READDIR_R
872	pthread_mutex_lock (&readdirlock);
873	#endif
874	}
875
876	static void atfork_parent (void)
877	{
878	#if !HAVE_READDIR_R
879	pthread_mutex_unlock (&readdirlock);
880	#endif
881	#if !HAVE_PREADWRITE
882	pthread_mutex_unlock (&preadwritelock);
883	#endif
884	pthread_mutex_unlock (&reslock);
885	pthread_mutex_unlock (&reqlock);
886	}
887
888	static void atfork_child (void)
889	{
890	aio_req prv;
891
892	started = 0;
893
894	while (reqs)
895	{
896	prv = reqs;
897	reqs = prv->next;
898	req_free (prv);
899	}
900
901	reqs = reqe = 0;
902
903	while (ress)
904	{
905	prv = ress;
906	ress = prv->next;
907	req_free (prv);
908	}
909
910	ress = rese = 0;
911
912	close (respipe [0]);
913	close (respipe [1]);
914	create_pipe ();
915
916	atfork_parent ();
917	}
918
919	#define dREQ \
920	aio_req req; \
921	\
922	if (SvOK (callback) && !SvROK (callback)) \
923	croak ("callback must be undef or of reference type"); \
924	\
925	Newz (0, req, 1, aio_cb); \
926	if (!req) \
927	croak ("out of memory during aio_req allocation"); \
928	\
929	req->callback = newSVsv (callback)
930
931	#define REQ_SEND \
932	req_send (req); \
933	\
934	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));
936
937	MODULE = IO::AIO PACKAGE = IO::AIO
938
939	PROTOTYPES: ENABLE
940
941	BOOT:
942	{
943	HV *stash = gv_stashpv ("IO::AIO", 1);
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947
948	create_pipe ();
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950	}
951
952	void	1217	void
953	min_parallel (nthreads)	1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
954	int nthreads
955	PROTOTYPE: $
956
957	void
958	max_parallel (nthreads)
959	int nthreads
960	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	1219	PPCODE:
967	RETVAL = max_outstanding;
968	max_outstanding = nreqs;
969
970	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
972	SV * pathname
973	int flags
974	int mode
975	SV * callback
976	PROTOTYPE: $$$;$
977	PPCODE:
978	{	1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
979	dREQ;	1223	dREQ;
980		1224
981	req->type = REQ_OPEN;	1225	req->type = EIO_SEEK;
982	req->data = newSVsv (pathname);	1226	req->sv1 = newSVsv (fh);
983	req->dataptr = SvPVbyte_nolen (req->data);	1227	req->int1 = fd;
984	req->fd = flags;	1228	req->offs = SvVAL64 (offset);
985	req->mode = mode;	1229	req->int2 = whence;
986		1230
987	REQ_SEND;	1231	REQ_SEND;
988	}	1232	}
989		1233
990	void	1234	void
991	aio_close (fh,callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	1236	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC
998	aio_fdatasync = REQ_FDATASYNC
999	PPCODE:
1000	{
1001	dREQ;
1002
1003	req->type = ix;
1004	req->fh = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1006
1007	REQ_SEND (req);
1008	}
1009
1010	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:
1019	aio_read = REQ_READ	1237	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	1239	PPCODE:
1023	{	1240	{
1024	aio_req req;
1025	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
1027		1244	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		1245
1031	if (dataoffset < 0)	1246	if (dataoffset < 0)
1032	dataoffset += svlen;	1247	dataoffset += svlen;
1033		1248
1034	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
1036		1251
1037	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
1038	{	1253	{
1039	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
1042	}	1257	}
1043	else	1258	else
1044	{	1259	{
1045	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	1263	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		1264
1052	{	1265	{
1053	dREQ;	1266	dREQ;
1054		1267
1055	req->type = ix;	1268	req->type = ix;
1056	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	1272	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
		1275	req->stroffset = dataoffset;
1063		1276
1064	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1065	{	1278	{
1066	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	1280	req->flags |= FLAG_SV2_RO_OFF;
1068	}	1281	}
1069		1282
1070	REQ_SEND;	1283	REQ_SEND;
1071	}	1284	}
1072	}	1285	}
1073		1286
1074	void	1287	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1076	SV * out_fh	1289	ALIAS:
1077	SV * in_fh	1290	aio_readlink = EIO_READLINK
1078	UV in_offset	1291	aio_realpath = EIO_REALPATH
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$
1082	PPCODE:	1292	PPCODE:
1083	{	1293	{
		1294	dREQ;
		1295
		1296	req->type = ix;
		1297	req_set_path1 (req, pathname);
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
		1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1304	PPCODE:
		1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1308	dREQ;
1085		1309
1086	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1091	req->offset = in_offset;	1315	req->offs = in_offset;
1092	req->length = length;	1316	req->size = length;
1093		1317
1094	REQ_SEND;	1318	REQ_SEND;
1095	}	1319	}
1096		1320
1097	void	1321	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1323	PPCODE:
1105	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1326	dREQ;
1107		1327
1108	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1111	req->offset = offset;	1331	req->offs = offset;
1112	req->length = length;	1332	req->size = length;
1113		1333
1114	REQ_SEND;	1334	REQ_SEND;
1115	}	1335	}
1116		1336
1117	void	1337	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1339	ALIAS:
1122	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1343	PPCODE:
1125	{	1344	{
1126	dREQ;	1345	dREQ;
1127		1346
1128	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);
1129	if (!req->statdata)
1130	{
1131	req_free (req);
1132	croak ("out of memory during aio_req->statdata allocation");
1133	}
1134
1135	if (SvPOK (fh_or_path))
1136	{
1137	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);
1140	}
1141	else
1142	{
1143	req->type = REQ_FSTAT;
1144	req->fh = newSVsv (fh_or_path);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}
1147		1348
1148	REQ_SEND;	1349	REQ_SEND;
1149	}	1350	}
1150		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
1151	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
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1450	ALIAS:
1156	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1159	PPCODE:	1454	PPCODE:
1160	{	1455	{
1161	dREQ;	1456	dREQ;
1162		1457
1163	req->type = ix;	1458	req->type = ix;
1164	req->data = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1460
1166
1167	REQ_SEND;	1461	REQ_SEND;
1168	}	1462	}
1169		1463
1170	void	1464	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1466	ALIAS:
1176	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1179	PPCODE:	1470	PPCODE:
1180	{	1471	{
		1472	eio_wd wd2 = 0;
1181	dREQ;	1473	dREQ;
1182		1474
1183	req->type = ix;	1475	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1186	req->data = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1187	req->dataptr = SvPVbyte_nolen (req->data);
1188		1479
1189	REQ_SEND;	1480	REQ_SEND;
1190	}	1481	}
1191		1482
1192	void	1483	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1485	PPCODE:
1197	{	1486	{
1198	dREQ;	1487	dREQ;
1199		1488
1200	req->type = REQ_SLEEP;	1489	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1490	req->int2 = (mode_t)mode;
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1491	req->offs = dev;
1203		1492	req_set_path1 (req, pathname);
		1493
1204	REQ_SEND;	1494	REQ_SEND;
1205	}	1495	}
1206		1496
1207	void	1497	void
1208	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)
1209	SV * callback	1499	ALIAS:
1210	PROTOTYPE: ;$	1500	aio_mtouch = EIO_MTOUCH
		1501	aio_msync = EIO_MSYNC
1211	PPCODE:	1502	PPCODE:
1212	{	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	{
1213	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
1214	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
		1590
1215	req_send (req);	1591	req_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1217	}	1593	}
1218		1594
1219	void	1595	void
1220	aio_nop (callback=&PL_sv_undef)	1596	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	1597	ALIAS:
		1598	aio_nop = EIO_NOP
		1599	aio_sync = EIO_SYNC
1222	PPCODE:	1600	PPCODE:
1223	{	1601	{
1224	dREQ;	1602	dREQ;
1225		1603
1226	req->type = REQ_NOP;	1604	req->type = ix;
1227		1605
1228	REQ_SEND;	1606	REQ_SEND;
1229	}	1607	}
1230		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;
		1629
1231	void	1630	void
1232	flush ()	1631	flush ()
1233	PROTOTYPE:
1234	CODE:	1632	CODE:
1235	while (nreqs)	1633	while (eio_nreqs ())
1236	{	1634	{
1237	poll_wait ();	1635	poll_wait ();
1238	poll_cb ();	1636	poll_cb ();
1239	}	1637	}
1240		1638
1241	void	1639	int
1242	poll()	1640	poll ()
1243	PROTOTYPE:
1244	CODE:	1641	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	1642	poll_wait ();
1248	poll_cb ();	1643	RETVAL = poll_cb ();
1249	}
1250
1251	int
1252	poll_fileno()
1253	PROTOTYPE:
1254	CODE:
1255	RETVAL = respipe [0];
1256	OUTPUT:	1644	OUTPUT:
1257	RETVAL	1645	RETVAL
1258		1646
1259	int	1647	int
		1648	poll_fileno ()
		1649	CODE:
		1650	RETVAL = s_epipe_fd (&respipe);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	int
1260	poll_cb(...)	1655	poll_cb (...)
1261	PROTOTYPE:	1656	PROTOTYPE:
1262	CODE:	1657	CODE:
1263	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1264	OUTPUT:	1659	OUTPUT:
1265	RETVAL	1660	RETVAL
1266		1661
1267	void	1662	void
1268	poll_wait()	1663	poll_wait ()
1269	PROTOTYPE:
1270	CODE:	1664	CODE:
1271	if (nreqs)
1272	poll_wait ();	1665	poll_wait ();
1273		1666
1274	int	1667	int
1275	nreqs()	1668	nreqs ()
1276	PROTOTYPE:
1277	CODE:	1669	CODE:
1278	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1279	OUTPUT:	1671	OUTPUT:
1280	RETVAL	1672	RETVAL
1281		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
1282	PROTOTYPES: DISABLE	1822	PROTOTYPES: DISABLE
1283		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
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1853
1286	void	1854	void
1287	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1856	CODE:
1290	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	}
1291		1874
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1876
1294	void	1877	void
1295	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1296	PPCODE:	1879	PPCODE:
1297	{	1880	{
1298	int i;	1881	int i;
1299	aio_req req;
1300		1882
1301	if (grp->fd == 2)	1883	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1884	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1885
1304	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1305	{	1887	{
		1888	aio_req req;
		1889
1306	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1892
1309	req = SvAIO_REQ (ST (i));	1893	req = SvAIO_REQ (ST (i));
1310		1894
1311	if (req)	1895	if (req)
1312	{	1896	eio_grp_add (grp, req);
1313	++grp->length;
1314	req->grp = grp;
1315
1316	req->grp_prev = 0;
1317	req->grp_next = grp->grp_first;
1318
1319	if (grp->grp_first)
1320	grp->grp_first->grp_prev = req;
1321
1322	grp->grp_first = req;
1323	}
1324	}	1897	}
1325	}	1898	}
		1899
		1900	void
		1901	cancel_subs (aio_req_ornot req)
		1902	CODE:
		1903	req_cancel_subs (req);
1326		1904
1327	void	1905	void
1328	result (aio_req grp, ...)	1906	result (aio_req grp, ...)
1329	CODE:	1907	CODE:
1330	{	1908	{
1331	int i;	1909	int i;
		1910	AV *av;
		1911
		1912	grp->errorno = errno;
		1913
1332	AV *av = newAV ();	1914	av = newAV ();
		1915	av_extend (av, items - 1);
1333		1916
1334	for (i = 1; i < items; ++i )	1917	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1918	av_push (av, newSVsv (ST (i)));
1336		1919
1337	SvREFCNT_dec (grp->data);	1920	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1921	grp->sv1 = (SV *)av;
1339	}	1922	}
1340		1923
1341	void	1924	void
1342	lock (aio_req grp)	1925	errno (aio_req grp, int errorno = errno)
		1926	CODE:
		1927	grp->errorno = errorno;
		1928
		1929	void
		1930	limit (aio_req grp, int limit)
1343	CODE:	1931	CODE:
1344	++grp->length;	1932	eio_grp_limit (grp, limit);
1345		1933
1346	void	1934	void
1347	unlock (aio_req grp)	1935	feed (aio_req grp, SV *callback=&PL_sv_undef)
1348	CODE:	1936	CODE:
1349	aio_grp_dec (grp);
1350
1351	void
1352	feeder_limit (aio_req grp, int limit)
1353	CODE:
1354	grp->fd2 = limit;
1355	aio_grp_feed (grp);
1356
1357	void
1358	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1359	CODE:
1360	{	1937	{
1361	SvREFCNT_dec (grp->fh2);	1938	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1939	grp->sv2 = newSVsv (callback);
		1940	grp->feed = aio_grp_feed;
1363		1941
1364	if (grp->fd2 <= 0)	1942	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1943	grp->int2 = 2;
1366		1944
1367	aio_grp_feed (grp);	1945	eio_grp_limit (grp, grp->int2);
1368	}	1946	}
1369		1947

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines