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/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 1.214 by root, Mon May 28 17:00:19 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
		21	# include <sys/mman.h>
		22	#endif
		23
25	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
26	# include <sys/sendfile.h>	82	#include <sys/select.h>
27	# elif __freebsd	83	#include <unistd.h>
28	# include <sys/socket.h>	84	#include <utime.h>
29	# include <sys/uio.h>	85	#include <signal.h>
30	# elif __hpux	86
31	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
32	# elif __solaris /* not yet */	88
33	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
34	# else	140	# else
35	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	142	# endif
37	#endif	143	#endif
38		144
39	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	146	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		147
44	#if __ia64	148	#ifndef makedev
45	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
		150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
46	#else	215	#else
47	# define STACKSIZE 8192	216	errno = ENOSYS;
48	#endif	217	#endif
		218	}
		219
		220	/*****************************************************************************/
49		221
50	enum {	222	enum {
51	REQ_QUIT,	223	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	};	224	};
63		225
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;	226	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
93		229
94	static int started, wanted;	230	static SV *on_next_submit;
95	static volatile int nreqs;	231	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	232	static int max_outstanding;
97	static int respipe [2];
98		233
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	234	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		235
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	236	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);	237	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
108		252
109	/* must be called at most once */	253	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
111	{	256	{
112	if (!req->self)	257	if (!req->self)
113	{	258	{
114	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	261	}
117		262
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	264	}
120		265
121	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
122	{	274	{
123	MAGIC *mg;	275	MAGIC *mg;
124		276
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
127		283
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		285
130	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	287	}
132		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
133	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
134	{	302	{
135	while (grp->length < grp->fd2)	303	if (grp->sv2 && SvOK (grp->sv2))
136	{	304	{
137	int old_len = grp->length;	305	dSP;
138		306
139	if (grp->fh2 && SvOK (grp->fh2))	307	ENTER;
		308	SAVETMPS;
		309	PUSHMARK (SP);
		310	XPUSHs (req_sv (grp, aio_grp_stash));
		311	PUTBACK;
		312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		313	SPAGAIN;
		314	FREETMPS;
		315	LEAVE;
		316	}
		317	}
		318
		319	static void
		320	req_submit (eio_req *req)
		321	{
		322	eio_submit (req);
		323
		324	if (expect_false (on_next_submit))
		325	{
		326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
		334	}
		335	}
		336
		337	static int
		338	req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
140	{	356	{
141	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
142		358	SvIV_set (sv_result, req->result);
143	ENTER;	359	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	}	360	}
153		361	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	362	{
157	SvREFCNT_dec (grp->fh2);	363	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	364	SvREADONLY_on (sv_result);
159	break;
160	}	365	}
		366
		367	switch (req->type)
		368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
		373	case EIO_READDIR:
		374	{
		375	SV *rv = &PL_sv_undef;
		376
		377	if (req->result >= 0)
		378	{
		379	int i;
		380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		382	AV *av = newAV ();
		383
		384	av_extend (av, req->result - 1);
		385
		386	for (i = 0; i < req->result; ++i)
		387	{
		388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
		412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
		420	names += SvCUR (name) + 1;
		421	}
		422	}
		423
		424	rv = sv_2mortal (newRV_noinc ((SV *)av));
		425	}
		426
		427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		431	}
		432	break;
		433
		434	case EIO_OPEN:
		435	{
		436	/* convert fd to fh */
		437	SV *fh = &PL_sv_undef;
		438
		439	if (req->result >= 0)
		440	{
		441	GV *gv = (GV *)sv_newmortal ();
		442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
		448
		449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
		461	PUSHs (fh);
		462	}
		463	break;
		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		588	if (req->result > 0)
		589	SvIV_set (sv_result, 0);
		590	/* FALLTHROUGH */
		591
		592	default:
		593	PUSHs (sv_result);
		594	break;
		595	}
		596
		597	errno = req->errorno;
		598
		599	PUTBACK;
		600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		601	SPAGAIN;
		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
		607
		608	FREETMPS;
		609	LEAVE;
		610
		611	PUTBACK;
161	}	612	}
162	}
163		613
164	static void aio_grp_dec (aio_req grp)	614	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	}	615	}
178		616
179	static void poll_wait ()	617	static void
		618	req_destroy (aio_req req)
180	{	619	{
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)	620	if (req->self)
307	{	621	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
310	}	624	}
311		625
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
315	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317		631
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320
321	Safefree (req);	632	free (req);
322	}	633	}
323		634
324	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
325	{	637	{
326	req->cancelled = 1;
327
328	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
329	{	658	{
330	aio_req sub;	659	int size;
331		660
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	661	X_LOCK (reslock);
333	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
334	}	671	}
335	}	672	}
336		673
337	static int poll_cb ()	674	static int
		675	poll_cb (void)
338	{	676	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	677	for (;;)
345	{	678	{
346	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
347	req = ress;
348		680
349	if (req)	681	if (res > 0)
		682	croak (0);
		683
		684	if (!max_outstanding || max_outstanding > eio_nreqs ())
		685	return res;
		686
		687	poll_wait ();
		688	}
		689	}
		690
		691	static void ecb_cold
		692	reinit (void)
		693	{
		694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
		698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		704	# define munmap(addr,length) EIO_ENOSYS ()
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
		744
		745	static SV *
		746	get_cb (SV *cb_sv)
		747	{
		748	SvGETMAGIC (cb_sv);
		749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		750	}
		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
		772	#define dREQ \
		773	aio_req req = dreq (callback); \
		774
		775	#define REQ_SEND \
		776	PUTBACK; \
		777	req_submit (req); \
		778	SPAGAIN; \
		779	\
		780	if (GIMME_V != G_VOID) \
		781	XPUSHs (req_sv (req, aio_req_stash));
		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
350	{	792	{
351	ress = req->next;	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
352		795
353	if (!ress)	796	if (SvOK (wdob))
354	{	797	{
355	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
356	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
362	}	803	}
363		804	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	{	805	{
375	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
376	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
377	}	810	}
378	else	811	else
379	{	812	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	}	813	}
400		814
401	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
402	}	817	}
403		818
404	static void *aio_proc(void *arg);	819	static void ecb_noinline
405		820	req_set_path1 (aio_req req, SV *path)
406	static void start_thread (void)
407	{	821	{
408	sigset_t fullsigset, oldsigset;	822	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	}	823	}
424		824
425	static void req_send (aio_req req)	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
426	{	827	{
427	while (started < wanted && nreqs >= started)	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
428	start_thread ();
429		829
430	++nreqs;	830	switch (SvTYPE (rv))
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{	831	{
438	reqe->next = req;	832	case SVt_PVIO:
439	reqe = req;	833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
440	}	844	}
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	}	845	}
458		846
459	static void end_thread (void)	847	XS(boot_IO__AIO) ecb_cold;
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464		848
465	req_send (req);	849	MODULE = IO::AIO PACKAGE = IO::AIO
466	}
467		850
468	static void min_parallel (int nthreads)	851	PROTOTYPES: ENABLE
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473		852
474	static void max_parallel (int nthreads)	853	BOOT:
475	{	854	{
476	int cur = started;	855	static const struct {
		856	const char *name;
		857	IV iv;
		858	} *civ, const_iv[] = {
		859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
		861	# define const_eio(name) { # name, (IV) EIO_ ## name },
477		862
478	if (wanted > nthreads)	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
479	wanted = nthreads;
480		864
481	while (cur > wanted)	865	const_iv (ENOSYS)
482	{	866	const_iv (EXDEV)
483	end_thread ();	867	const_iv (EBADR)
484	cur--;
485	}
486		868
487	while (started > wanted)	869	const_iv (O_RDONLY)
488	{	870	const_iv (O_WRONLY)
489	poll_wait ();	871	const_iv (O_RDWR)
490	poll_cb ();	872	const_iv (O_CREAT)
491	}	873	const_iv (O_TRUNC)
492	}	874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
493		876
494	static void create_pipe ()	877	const_iv (O_ASYNC)
495	{	878	const_iv (O_DIRECT)
496	if (pipe (respipe))	879	const_iv (O_NOATIME)
497	croak ("unable to initialize result pipe");
498		880
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	881	const_iv (O_CLOEXEC)
500	croak ("cannot set result pipe to nonblocking mode");	882	const_iv (O_NOCTTY)
		883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
501		892
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	893	const_iv (S_IFIFO)
503	croak ("cannot set result pipe to nonblocking mode");	894	const_iv (S_IFCHR)
504	}	895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
505		902
506	/*****************************************************************************/	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
507	/* work around various missing functions */	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
508		909
509	#if !HAVE_PREADWRITE	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
510	# define pread aio_pread	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
511	# define pwrite aio_pwrite	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
512		915
513	/*	916	const_iv (ST_RDONLY)
514	* make our pread/pwrite safe against themselves, but not against	917	const_iv (ST_NOSUID)
515	* normal read/write by using a mutex. slows down execution a lot,	918	const_iv (ST_NODEV)
516	* but that's your problem, not mine.	919	const_iv (ST_NOEXEC)
517	*/	920	const_iv (ST_SYNCHRONOUS)
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
519		928
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	929	const_iv (PROT_NONE)
521	{	930	const_iv (PROT_EXEC)
522	ssize_t res;	931	const_iv (PROT_READ)
523	off_t ooffset;	932	const_iv (PROT_WRITE)
524		933
525	pthread_mutex_lock (&preadwritelock);	934	/*const_iv (MAP_FIXED)*/
526	ooffset = lseek (fd, 0, SEEK_CUR);	935	const_iv (MAP_PRIVATE)
527	lseek (fd, offset, SEEK_SET);	936	const_iv (MAP_SHARED)
528	res = read (fd, buf, count);	937	const_iv (MAP_ANONYMOUS)
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531		938
532	return res;	939	/* linuxish */
533	}	940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
534		945
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	946	const_iv (FIEMAP_FLAG_SYNC)
536	{	947	const_iv (FIEMAP_FLAG_XATTR)
537	ssize_t res;	948	const_iv (FIEMAP_FLAGS_COMPAT)
538	off_t ooffset;	949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
539		960
540	pthread_mutex_lock (&preadwritelock);	961	const_iv (SPLICE_F_MOVE)
541	ooffset = lseek (fd, 0, SEEK_CUR);	962	const_iv (SPLICE_F_NONBLOCK)
542	lseek (fd, offset, SEEK_SET);	963	const_iv (SPLICE_F_MORE)
543	res = write (fd, buf, count);	964	const_iv (SPLICE_F_GIFT)
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546		965
547	return res;	966	const_iv (SEEK_DATA)
548	}	967	const_iv (SEEK_HOLE)
549	#endif
550		968
551	#if !HAVE_FDATASYNC	969	/* libeio constants */
552	# define fdatasync fsync	970	const_eio (SEEK_SET)
553	#endif	971	const_eio (SEEK_CUR)
		972	const_eio (SEEK_END)
554		973
555	#if !HAVE_READAHEAD	974	const_eio (MCL_FUTURE)
556	# define readahead aio_readahead	975	const_eio (MCL_CURRENT)
557		976
558	static ssize_t readahead (int fd, off_t offset, size_t count)	977	const_eio (MS_ASYNC)
559	{	978	const_eio (MS_INVALIDATE)
560	char readahead_buf[4096];	979	const_eio (MS_SYNC)
561		980
562	while (count > 0)	981	const_eio (MT_MODIFY)
563	{
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565		982
566	pread (fd, readahead_buf, len, offset);	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
567	offset += len;	984	const_eio (SYNC_FILE_RANGE_WRITE)
568	count -= len;	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
569	}
570		986
571	errno = 0;	987	const_eio (FALLOC_FL_KEEP_SIZE)
572	}
573	#endif
574		988
575	#if !HAVE_READDIR_R	989	const_eio (READDIR_DENTS)
576	# define readdir_r aio_readdir_r	990	const_eio (READDIR_DIRS_FIRST)
		991	const_eio (READDIR_STAT_ORDER)
		992	const_eio (READDIR_FOUND_UNKNOWN)
577		993
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	994	const_eio (DT_UNKNOWN)
579		995	const_eio (DT_FIFO)
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	996	const_eio (DT_CHR)
581	{	997	const_eio (DT_DIR)
582	struct dirent *e;	998	const_eio (DT_BLK)
583	int errorno;	999	const_eio (DT_REG)
584		1000	const_eio (DT_LNK)
585	pthread_mutex_lock (&readdirlock);	1001	const_eio (DT_SOCK)
586		1002	const_eio (DT_WHT)
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	}	1003	};
630		1004
631	# elif __hpux	1005	aio_stash = gv_stashpv ("IO::AIO" , 1);
632	res = sendfile (ofd, ifd, offset, count, 0, 0);	1006	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1007	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1008	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
633		1009
634	# elif __solaris	1010	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
635	{	1011	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
636	struct sendfilevec vec;
637	size_t sbytes;
638		1012
639	vec.sfv_fd = ifd;	1013	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643		1014
644	res = sendfilev (ofd, &vec, 1, &sbytes);	1015	reinit ();
		1016	}
645		1017
646	if (res < 0 && sbytes)	1018	void
		1019	reinit ()
		1020	PROTOTYPE:
		1021
		1022	void
		1023	max_poll_reqs (unsigned int nreqs)
		1024	PROTOTYPE: $
		1025	CODE:
		1026	eio_set_max_poll_reqs (nreqs);
		1027
		1028	void
		1029	max_poll_time (double nseconds)
		1030	PROTOTYPE: $
		1031	CODE:
		1032	eio_set_max_poll_time (nseconds);
		1033
		1034	void
		1035	min_parallel (unsigned int nthreads)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_min_parallel (nthreads);
		1039
		1040	void
		1041	max_parallel (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_parallel (nthreads);
		1045
		1046	void
		1047	max_idle (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_max_idle (nthreads);
		1051
		1052	void
		1053	idle_timeout (unsigned int seconds)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_idle_timeout (seconds);
		1057
		1058	void
		1059	max_outstanding (unsigned int maxreqs)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	max_outstanding = maxreqs;
		1063
		1064	void
		1065	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1066	PPCODE:
		1067	{
		1068	dREQ;
		1069
		1070	req->type = EIO_WD_OPEN;
		1071	req_set_path1 (req, pathname);
		1072
		1073	REQ_SEND;
		1074	}
		1075
		1076	void
		1077	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_OPEN;
		1083	req_set_path1 (req, pathname);
		1084	req->int1 = flags;
		1085	req->int2 = mode;
		1086
		1087	REQ_SEND;
		1088	}
		1089
		1090	void
		1091	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_fsync = EIO_FSYNC
		1094	aio_fdatasync = EIO_FDATASYNC
		1095	aio_syncfs = EIO_SYNCFS
		1096	PPCODE:
		1097	{
		1098	int fd = s_fileno_croak (fh, 0);
		1099	dREQ;
		1100
		1101	req->type = ix;
		1102	req->sv1 = newSVsv (fh);
		1103	req->int1 = fd;
		1104
		1105	REQ_SEND;
		1106	}
		1107
		1108	void
		1109	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_SYNC_FILE_RANGE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->offs = offset;
647	res = sbytes;	1119	req->size = nbytes;
648	}	1120	req->int2 = flags;
649		1121
650	# endif	1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	int fd = s_fileno_croak (fh, 0);
		1130	dREQ;
		1131
		1132	req->type = EIO_FALLOCATE;
		1133	req->sv1 = newSVsv (fh);
		1134	req->int1 = fd;
		1135	req->int2 = mode;
		1136	req->offs = offset;
		1137	req->size = len;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1144	PPCODE:
		1145	{
		1146	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1147	int fd = s_fileno_croak (fh, 0);
		1148	dREQ;
		1149
		1150	if (expect_false (close_fd < 0))
		1151	{
		1152	int pipefd [2];
		1153
		1154	if (
		1155	#ifdef _WIN32
		1156	_pipe (pipefd, 1, _O_BINARY) < 0
651	#else	1157	#else
652	res = -1;	1158	pipe (pipefd) < 0
653	errno = ENOSYS;	1159	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
654	#endif	1160	#endif
655		1161	|| 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	{	1162	)
676	if (cnt && !res) res = -1;	1163	abort (); /*D*/
677	break;
678	}
679		1164
680	cnt = write (ofd, buf, cnt);	1165	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	}	1166	}
835		1167
836	req->errorno = errno;	1168	req->type = EIO_DUP2;
837		1169	req->int1 = close_fd;
838	pthread_mutex_lock (&reslock);	1170	req->sv2 = newSVsv (fh);
839
840	req->next = 0;	1171	req->int2 = fd;
841		1172
842	if (rese)	1173	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	}	1174	}
861		1175
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	1176	void
953	min_parallel (nthreads)	1177	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:	1178	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: $$$;$
977	PPCODE:
978	{	1179	{
		1180	int fd = s_fileno_croak (fh, 0);
979	dREQ;	1181	dREQ;
980		1182
981	req->type = REQ_OPEN;	1183	req->type = EIO_SEEK;
982	req->data = newSVsv (pathname);	1184	req->sv1 = newSVsv (fh);
983	req->dataptr = SvPVbyte_nolen (req->data);	1185	req->int1 = fd;
984	req->fd = flags;	1186	req->offs = SvVAL64 (offset);
985	req->mode = mode;	1187	req->int2 = whence;
986		1188
987	REQ_SEND;	1189	REQ_SEND;
988	}	1190	}
989		1191
990	void	1192	void
991	aio_close (fh,callback=&PL_sv_undef)	1193	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	1194	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC
998	aio_fdatasync = REQ_FDATASYNC
999	PPCODE:
1000	{
1001	dREQ;
1002
1003	req->type = ix;
1004	req->fh = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1006
1007	REQ_SEND (req);
1008	}
1009
1010	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:
1019	aio_read = REQ_READ	1195	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	1196	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	1197	PPCODE:
1023	{	1198	{
1024	aio_req req;
1025	STRLEN svlen;	1199	STRLEN svlen;
		1200	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	1201	char *svptr = SvPVbyte (data, svlen);
1027		1202	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		1203
1031	if (dataoffset < 0)	1204	if (dataoffset < 0)
1032	dataoffset += svlen;	1205	dataoffset += svlen;
1033		1206
1034	if (dataoffset < 0 || dataoffset > svlen)	1207	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	1208	croak ("dataoffset outside of data scalar");
1036		1209
1037	if (ix == REQ_WRITE)	1210	if (ix == EIO_WRITE)
1038	{	1211	{
1039	/* write: check length and adjust. */	1212	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	1213	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	1214	len = svlen - dataoffset;
1042	}	1215	}
1043	else	1216	else
1044	{	1217	{
1045	/* read: grow scalar as necessary */	1218	/* read: check type and grow scalar as necessary */
		1219	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	1220	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	1221	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		1222
1052	{	1223	{
1053	dREQ;	1224	dREQ;
1054		1225
1055	req->type = ix;	1226	req->type = ix;
1056	req->fh = newSVsv (fh);	1227	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1228	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	1229	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	1230	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	1231	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	1232	req->ptr2 = (char *)svptr + dataoffset;
		1233	req->stroffset = dataoffset;
1063		1234
1064	if (!SvREADONLY (data))	1235	if (!SvREADONLY (data))
1065	{	1236	{
1066	SvREADONLY_on (data);	1237	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	1238	req->flags |= FLAG_SV2_RO_OFF;
1068	}	1239	}
1069		1240
1070	REQ_SEND;	1241	REQ_SEND;
1071	}	1242	}
1072	}	1243	}
1073		1244
1074	void	1245	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1246	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1076	SV * out_fh	1247	ALIAS:
1077	SV * in_fh	1248	aio_readlink = EIO_READLINK
1078	UV in_offset	1249	aio_realpath = EIO_REALPATH
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$
1082	PPCODE:	1250	PPCODE:
1083	{	1251	{
		1252	dREQ;
		1253
		1254	req->type = ix;
		1255	req_set_path1 (req, pathname);
		1256
		1257	REQ_SEND;
		1258	}
		1259
		1260	void
		1261	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1262	PPCODE:
		1263	{
		1264	int ifd = s_fileno_croak (in_fh , 0);
		1265	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1266	dREQ;
1085		1267
1086	req->type = REQ_SENDFILE;	1268	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1269	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1270	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1271	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1272	req->int2 = ifd;
1091	req->offset = in_offset;	1273	req->offs = in_offset;
1092	req->length = length;	1274	req->size = length;
1093		1275
1094	REQ_SEND;	1276	REQ_SEND;
1095	}	1277	}
1096		1278
1097	void	1279	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1280	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1281	PPCODE:
1105	{	1282	{
		1283	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1284	dREQ;
1107		1285
1108	req->type = REQ_READAHEAD;	1286	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1287	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1288	req->int1 = fd;
1111	req->offset = offset;	1289	req->offs = offset;
1112	req->length = length;	1290	req->size = length;
1113		1291
1114	REQ_SEND;	1292	REQ_SEND;
1115	}	1293	}
1116		1294
1117	void	1295	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1296	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1297	ALIAS:
1122	aio_stat = REQ_STAT	1298	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1299	aio_lstat = EIO_LSTAT
		1300	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1301	PPCODE:
1125	{	1302	{
1126	dREQ;	1303	dREQ;
1127		1304
1128	New (0, req->statdata, 1, Stat_t);	1305	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		1306
1148	REQ_SEND;	1307	REQ_SEND;
1149	}	1308	}
1150		1309
		1310	UV
		1311	major (UV dev)
		1312	ALIAS:
		1313	minor = 1
		1314	CODE:
		1315	RETVAL = ix ? major (dev) : minor (dev);
		1316	OUTPUT:
		1317	RETVAL
		1318
		1319	UV
		1320	makedev (UV maj, UV min)
		1321	CODE:
		1322	RETVAL = makedev (maj, min);
		1323	OUTPUT:
		1324	RETVAL
		1325
1151	void	1326	void
		1327	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1328	PPCODE:
		1329	{
		1330	dREQ;
		1331
		1332	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1333	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1334	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
		1340	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1341	PPCODE:
		1342	{
		1343	dREQ;
		1344
		1345	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1346	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1347
		1348	REQ_SEND;
		1349	}
		1350
		1351	void
		1352	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1353	PPCODE:
		1354	{
		1355	dREQ;
		1356
		1357	req->int2 = mode;
		1358	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1359
		1360	REQ_SEND;
		1361	}
		1362
		1363	void
		1364	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1365	PPCODE:
		1366	{
		1367	dREQ;
		1368
		1369	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1370	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1371	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
		1377	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1378	PPCODE:
		1379	{
		1380	dREQ;
		1381
		1382	req->type = EIO_READDIR;
		1383	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1384
		1385	if (flags & EIO_READDIR_DENTS)
		1386	req->int1 |= EIO_READDIR_CUSTOM2;
		1387
		1388	req_set_path1 (req, pathname);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->type = EIO_MKDIR;
		1400	req->int2 = mode;
		1401	req_set_path1 (req, pathname);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1407	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1408	ALIAS:
1156	aio_unlink = REQ_UNLINK	1409	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1410	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1411	aio_readdir = EIO_READDIR
1159	PPCODE:	1412	PPCODE:
1160	{	1413	{
1161	dREQ;	1414	dREQ;
1162		1415
1163	req->type = ix;	1416	req->type = ix;
1164	req->data = newSVsv (pathname);	1417	req_set_path1 (req, pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1418
1166
1167	REQ_SEND;	1419	REQ_SEND;
1168	}	1420	}
1169		1421
1170	void	1422	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1423	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1424	ALIAS:
1176	aio_link = REQ_LINK	1425	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1426	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1427	aio_rename = EIO_RENAME
1179	PPCODE:	1428	PPCODE:
1180	{	1429	{
		1430	eio_wd wd2 = 0;
1181	dREQ;	1431	dREQ;
1182		1432
1183	req->type = ix;	1433	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1434	req_set_path1 (req, oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1435	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1186	req->data = newSVsv (newpath);	1436	req->int3 = (long)wd2;
1187	req->dataptr = SvPVbyte_nolen (req->data);
1188		1437
1189	REQ_SEND;	1438	REQ_SEND;
1190	}	1439	}
1191		1440
1192	void	1441	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1442	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1443	PPCODE:
1197	{	1444	{
1198	dREQ;	1445	dREQ;
1199		1446
1200	req->type = REQ_SLEEP;	1447	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1448	req->int2 = (mode_t)mode;
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1449	req->offs = dev;
1203		1450	req_set_path1 (req, pathname);
		1451
1204	REQ_SEND;	1452	REQ_SEND;
1205	}	1453	}
1206		1454
1207	void	1455	void
1208	aio_group (callback=&PL_sv_undef)	1456	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1209	SV * callback	1457	ALIAS:
1210	PROTOTYPE: ;$	1458	aio_mtouch = EIO_MTOUCH
		1459	aio_msync = EIO_MSYNC
1211	PPCODE:	1460	PPCODE:
1212	{	1461	{
		1462	STRLEN svlen;
		1463	char *svptr = SvPVbyte (data, svlen);
		1464	UV len = SvUV (length);
		1465
		1466	if (offset < 0)
		1467	offset += svlen;
		1468
		1469	if (offset < 0 || offset > svlen)
		1470	croak ("offset outside of scalar");
		1471
		1472	if (!SvOK (length) || len + offset > svlen)
		1473	len = svlen - offset;
		1474
		1475	{
		1476	dREQ;
		1477
		1478	req->type = ix;
		1479	req->sv2 = SvREFCNT_inc (data);
		1480	req->ptr2 = (char *)svptr + offset;
		1481	req->size = len;
		1482	req->int1 = flags;
		1483
		1484	REQ_SEND;
		1485	}
		1486	}
		1487
		1488	void
		1489	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1490	PPCODE:
		1491	{
		1492	STRLEN svlen;
		1493	char *svptr = SvPVbyte (data, svlen);
		1494	UV len = SvUV (length);
		1495
		1496	if (offset < 0)
		1497	offset += svlen;
		1498
		1499	if (offset < 0 || offset > svlen)
		1500	croak ("offset outside of scalar");
		1501
		1502	if (!SvOK (length) || len + offset > svlen)
		1503	len = svlen - offset;
		1504
		1505	{
		1506	dREQ;
		1507
		1508	req->type = EIO_MLOCK;
		1509	req->sv2 = SvREFCNT_inc (data);
		1510	req->ptr2 = (char *)svptr + offset;
		1511	req->size = len;
		1512
		1513	REQ_SEND;
		1514	}
		1515	}
		1516
		1517	void
		1518	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1519	PPCODE:
		1520	{
		1521	dREQ;
		1522
		1523	req->type = EIO_MLOCKALL;
		1524	req->int1 = flags;
		1525
		1526	REQ_SEND;
		1527	}
		1528
		1529	void
		1530	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1531	PPCODE:
		1532	{
		1533	int fd = s_fileno_croak (fh, 0);
1213	dREQ;	1534	dREQ;
		1535
1214	req->type = REQ_GROUP;	1536	req->type = EIO_CUSTOM;
1215	req_send (req);	1537	req->sv1 = newSVsv (fh);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1538	req->int1 = fd;
1217	}
1218		1539
		1540	req->feed = fiemap;
		1541	#if HAVE_FIEMAP
		1542	/* keep our fingers crossed that the next two types are 64 bit */
		1543	req->offs = start;
		1544	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1545	req->int2 = flags;
		1546	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1547	#endif
		1548
		1549	REQ_SEND;
		1550	}
		1551
1219	void	1552	void
1220	aio_nop (callback=&PL_sv_undef)	1553	aio_busy (double delay, SV *callback=&PL_sv_undef)
1221	SV * callback
1222	PPCODE:	1554	PPCODE:
1223	{	1555	{
1224	dREQ;	1556	dREQ;
1225		1557
1226	req->type = REQ_NOP;	1558	req->type = EIO_BUSY;
		1559	req->nv1 = delay < 0. ? 0. : delay;
1227		1560
1228	REQ_SEND;	1561	REQ_SEND;
1229	}	1562	}
1230		1563
1231	void	1564	void
		1565	aio_group (SV *callback=&PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
		1570	req->type = EIO_GROUP;
		1571
		1572	req_submit (req);
		1573	XPUSHs (req_sv (req, aio_grp_stash));
		1574	}
		1575
		1576	void
		1577	aio_nop (SV *callback=&PL_sv_undef)
		1578	ALIAS:
		1579	aio_nop = EIO_NOP
		1580	aio_sync = EIO_SYNC
		1581	PPCODE:
		1582	{
		1583	dREQ;
		1584
		1585	req->type = ix;
		1586
		1587	REQ_SEND;
		1588	}
		1589
		1590	int
		1591	aioreq_pri (int pri = 0)
		1592	CODE:
		1593	RETVAL = next_pri;
		1594	if (items > 0)
		1595	{
		1596	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1597	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1598	next_pri = pri;
		1599	}
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	aioreq_nice (int nice = 0)
		1605	CODE:
		1606	nice = next_pri - nice;
		1607	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1608	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1609	next_pri = nice;
		1610
		1611	void
1232	flush ()	1612	flush ()
1233	PROTOTYPE:
1234	CODE:	1613	CODE:
1235	while (nreqs)	1614	while (eio_nreqs ())
1236	{	1615	{
1237	poll_wait ();	1616	poll_wait ();
1238	poll_cb ();	1617	poll_cb ();
1239	}	1618	}
1240		1619
1241	void	1620	int
1242	poll()	1621	poll ()
1243	PROTOTYPE:
1244	CODE:	1622	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	1623	poll_wait ();
1248	poll_cb ();	1624	RETVAL = poll_cb ();
1249	}
1250
1251	int
1252	poll_fileno()
1253	PROTOTYPE:
1254	CODE:
1255	RETVAL = respipe [0];
1256	OUTPUT:	1625	OUTPUT:
1257	RETVAL	1626	RETVAL
1258		1627
1259	int	1628	int
		1629	poll_fileno ()
		1630	CODE:
		1631	RETVAL = s_epipe_fd (&respipe);
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	int
1260	poll_cb(...)	1636	poll_cb (...)
1261	PROTOTYPE:	1637	PROTOTYPE:
1262	CODE:	1638	CODE:
1263	RETVAL = poll_cb ();	1639	RETVAL = poll_cb ();
1264	OUTPUT:	1640	OUTPUT:
1265	RETVAL	1641	RETVAL
1266		1642
1267	void	1643	void
1268	poll_wait()	1644	poll_wait ()
1269	PROTOTYPE:
1270	CODE:	1645	CODE:
1271	if (nreqs)
1272	poll_wait ();	1646	poll_wait ();
1273		1647
1274	int	1648	int
1275	nreqs()	1649	nreqs ()
1276	PROTOTYPE:
1277	CODE:	1650	CODE:
1278	RETVAL = nreqs;	1651	RETVAL = eio_nreqs ();
1279	OUTPUT:	1652	OUTPUT:
1280	RETVAL	1653	RETVAL
1281		1654
		1655	int
		1656	nready ()
		1657	CODE:
		1658	RETVAL = eio_nready ();
		1659	OUTPUT:
		1660	RETVAL
		1661
		1662	int
		1663	npending ()
		1664	CODE:
		1665	RETVAL = eio_npending ();
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	nthreads ()
		1671	CODE:
		1672	RETVAL = eio_nthreads ();
		1673	OUTPUT:
		1674	RETVAL
		1675
		1676	int
		1677	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1678	CODE:
		1679	RETVAL = posix_fadvise (fh, offset, length, advice);
		1680	OUTPUT:
		1681	RETVAL
		1682
		1683	IV
		1684	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1685	CODE:
		1686	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1687	OUTPUT:
		1688	RETVAL
		1689
		1690	void
		1691	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1692	PPCODE:
		1693	sv_unmagic (scalar, MMAP_MAGIC);
		1694	{
		1695	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1696	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1697	if (addr == (void *)-1)
		1698	XSRETURN_NO;
		1699
		1700	sv_force_normal (scalar);
		1701
		1702	/* we store the length in mg_obj, as namlen is I32 :/ */
		1703	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1704	->mg_obj = (SV *)length;
		1705
		1706	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1707
		1708	if (!(prot & PROT_WRITE))
		1709	SvREADONLY_on (scalar);
		1710
		1711	if (SvLEN (scalar))
		1712	Safefree (SvPVX (scalar));
		1713
		1714	SvPVX (scalar) = (char *)addr;
		1715	SvCUR_set (scalar, length);
		1716	SvLEN_set (scalar, 0);
		1717	SvPOK_only (scalar);
		1718
		1719	XSRETURN_YES;
		1720	}
		1721
		1722	void
		1723	munmap (SV *scalar)
		1724	CODE:
		1725	sv_unmagic (scalar, MMAP_MAGIC);
		1726
		1727	int
		1728	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1729	ALIAS:
		1730	mprotect = 1
		1731	CODE:
		1732	{
		1733	STRLEN svlen;
		1734	void *addr = SvPVbyte (scalar, svlen);
		1735	size_t len = SvUV (length);
		1736
		1737	if (offset < 0)
		1738	offset += svlen;
		1739
		1740	if (offset < 0 || offset > svlen)
		1741	croak ("offset outside of scalar");
		1742
		1743	if (!SvOK (length) || len + offset > svlen)
		1744	len = svlen - offset;
		1745
		1746	addr = (void *)(((intptr_t)addr) + offset);
		1747	eio_page_align (&addr, &len);
		1748
		1749	switch (ix)
		1750	{
		1751	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1752	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1753	}
		1754	}
		1755	OUTPUT:
		1756	RETVAL
		1757
		1758	int
		1759	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1760	CODE:
		1761	{
		1762	STRLEN svlen;
		1763	void *addr = SvPVbyte (scalar, svlen);
		1764	size_t len = SvUV (length);
		1765
		1766	if (offset < 0)
		1767	offset += svlen;
		1768
		1769	if (offset < 0 || offset > svlen)
		1770	croak ("offset outside of scalar");
		1771
		1772	if (!SvOK (length) || len + offset > svlen)
		1773	len = svlen - offset;
		1774
		1775	addr = (void *)(((intptr_t)addr) + offset);
		1776	eio_page_align (&addr, &len);
		1777	#if _POSIX_MEMLOCK_RANGE
		1778	RETVAL = munlock (addr, len);
		1779	#else
		1780	RETVAL = EIO_ENOSYS ();
		1781	#endif
		1782	}
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786	int
		1787	munlockall ()
		1788	CODE:
		1789	#if _POSIX_MEMLOCK
		1790	munlockall ();
		1791	#else
		1792	RETVAL = EIO_ENOSYS ();
		1793	#endif
		1794	OUTPUT:
		1795	RETVAL
		1796
		1797	int
		1798	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1799	CODE:
		1800	{
		1801	#if HAVE_LINUX_SPLICE
		1802	loff_t off_in_, off_out_;
		1803	RETVAL = splice (
		1804	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1805	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1806	length, flags
		1807	);
		1808	#else
		1809	RETVAL = EIO_ENOSYS ();
		1810	#endif
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1817	CODE:
		1818	#if HAVE_LINUX_SPLICE
		1819	RETVAL = tee (rfh, wfh, length, flags);
		1820	#else
		1821	RETVAL = EIO_ENOSYS ();
		1822	#endif
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	void _on_next_submit (SV *cb)
		1827	CODE:
		1828	SvREFCNT_dec (on_next_submit);
		1829	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1830
1282	PROTOTYPES: DISABLE	1831	PROTOTYPES: DISABLE
1283		1832
		1833	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1834
		1835	BOOT:
		1836	{
		1837	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1838	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1839	}
		1840
		1841	void
		1842	DESTROY (SV *self)
		1843	CODE:
		1844	{
		1845	aio_wd wd = SvAIO_WD (self);
		1846	#if HAVE_AT
		1847	{
		1848	SV *callback = &PL_sv_undef;
		1849	dREQ; /* clobbers next_pri :/ */
		1850	next_pri = req->pri; /* restore next_pri */
		1851	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1852	req->type = EIO_WD_CLOSE;
		1853	req->wd = wd;
		1854	REQ_SEND;
		1855	}
		1856	#else
		1857	eio_wd_close_sync (wd);
		1858	#endif
		1859	}
		1860
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1861	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1862
1286	void	1863	void
1287	cancel (aio_req_ornot req)	1864	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1865	CODE:
1290	req_cancel (req);	1866	eio_cancel (req);
		1867
		1868	void
		1869	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1870	PPCODE:
		1871	{
		1872	if (GIMME_V != G_VOID)
		1873	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1874
		1875	if (items > 1)
		1876	{
		1877	SV *cb_cv =get_cb (callback);
		1878
		1879	SvREFCNT_dec (req->callback);
		1880	req->callback = SvREFCNT_inc (cb_cv);
		1881	}
		1882	}
1291		1883
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1884	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1885
1294	void	1886	void
1295	add (aio_req grp, ...)	1887	add (aio_req grp, ...)
1296	PPCODE:	1888	PPCODE:
1297	{	1889	{
1298	int i;	1890	int i;
1299	aio_req req;
1300		1891
1301	if (grp->fd == 2)	1892	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1894
1304	for (i = 1; i < items; ++i )	1895	for (i = 1; i < items; ++i )
1305	{	1896	{
		1897	aio_req req;
		1898
1306	if (GIMME_V != G_VOID)	1899	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1900	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1901
1309	req = SvAIO_REQ (ST (i));	1902	req = SvAIO_REQ (ST (i));
1310		1903
1311	if (req)	1904	if (req)
1312	{	1905	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	}	1906	}
1325	}	1907	}
		1908
		1909	void
		1910	cancel_subs (aio_req_ornot req)
		1911	CODE:
		1912	req_cancel_subs (req);
1326		1913
1327	void	1914	void
1328	result (aio_req grp, ...)	1915	result (aio_req grp, ...)
1329	CODE:	1916	CODE:
1330	{	1917	{
1331	int i;	1918	int i;
		1919	AV *av;
		1920
		1921	grp->errorno = errno;
		1922
1332	AV *av = newAV ();	1923	av = newAV ();
		1924	av_extend (av, items - 1);
1333		1925
1334	for (i = 1; i < items; ++i )	1926	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1927	av_push (av, newSVsv (ST (i)));
1336		1928
1337	SvREFCNT_dec (grp->data);	1929	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1930	grp->sv1 = (SV *)av;
1339	}	1931	}
1340		1932
1341	void	1933	void
1342	lock (aio_req grp)	1934	errno (aio_req grp, int errorno = errno)
		1935	CODE:
		1936	grp->errorno = errorno;
		1937
		1938	void
		1939	limit (aio_req grp, int limit)
1343	CODE:	1940	CODE:
1344	++grp->length;	1941	eio_grp_limit (grp, limit);
1345		1942
1346	void	1943	void
1347	unlock (aio_req grp)	1944	feed (aio_req grp, SV *callback=&PL_sv_undef)
1348	CODE:	1945	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	{	1946	{
1361	SvREFCNT_dec (grp->fh2);	1947	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1948	grp->sv2 = newSVsv (callback);
		1949	grp->feed = aio_grp_feed;
1363		1950
1364	if (grp->fd2 <= 0)	1951	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1952	grp->int2 = 2;
1366		1953
1367	aio_grp_feed (grp);	1954	eio_grp_limit (grp, grp->int2);
1368	}	1955	}
1369		1956

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