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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.54 by root, Mon Oct 23 00:34:36 2006 UTC vs.
Revision 1.219 by root, Fri Jul 27 18:43:25 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 72 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 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_mapped_extents < count)
		200	/* either autosizing succeeded,
		201	* or the file had no extents
		202	* or we luckily had enough space */
		203	break;
		204
		205	/* some kernels overwrite fm_length, so just reset everything */
		206	fiemap->fm_start = req->offs;
		207	fiemap->fm_length = req->size;
		208	fiemap->fm_flags = req->int2;
		209	fiemap->fm_extent_count = 0;
		210
		211	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		212	return;
		213
		214	/* to work around a kernel bug, we allocate one more */
		215	count = fiemap->fm_mapped_extents + 1;
		216
		217	free (fiemap);
		218	}
		219
		220	req->result = 0;
		221
46	#else	222	#else
47	# define STACKSIZE 8192	223	errno = ENOSYS;
48	#endif	224	#endif
		225	}
		226
		227	/*****************************************************************************/
49		228
50	enum {	229	enum {
51	REQ_QUIT,	230	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	};	231	};
63		232
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;	233	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	234	typedef eio_req *aio_req_ornot;
		235	typedef eio_wd aio_wd;
93		236
94	static int started, wanted;	237	static SV *on_next_submit;
95	static volatile int nreqs;	238	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	239	static int max_outstanding;
97	static int respipe [2];
98		240
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	241	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		242
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	243	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);	244	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	245
		246	static void
		247	want_poll (void)
		248	{
		249	/* write a dummy byte to the pipe so fh becomes ready */
		250	s_epipe_signal (&respipe);
		251	}
		252
		253	static void
		254	done_poll (void)
		255	{
		256	/* read any signals sent by the worker threads */
		257	s_epipe_drain (&respipe);
		258	}
108		259
109	/* must be called at most once */	260	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	261	static SV *
		262	req_sv (aio_req req, HV *stash)
111	{	263	{
112	if (!req->self)	264	if (!req->self)
113	{	265	{
114	req->self = (SV *)newHV ();	266	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	267	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	268	}
117		269
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	270	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	271	}
120		272
121	static aio_req SvAIO_REQ (SV *sv)	273	static SV *
		274	newSVaio_wd (aio_wd wd)
		275	{
		276	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		277	}
		278
		279	static aio_req
		280	SvAIO_REQ (SV *sv)
122	{	281	{
123	MAGIC *mg;	282	MAGIC *mg;
124		283
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	284	if (!SvROK (sv)
		285	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		286	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		287	&& SvSTASH (SvRV (sv)) != aio_req_stash
		288	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	289	croak ("object of class IO::AIO::REQ expected");
127		290
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	291	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		292
130	return mg ? (aio_req)mg->mg_ptr : 0;	293	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	294	}
132		295
		296	static aio_wd
		297	SvAIO_WD (SV *sv)
		298	{
		299	if (!SvROK (sv)
		300	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		301	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		302	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		303
		304	return (aio_wd)(long)SvIVX (SvRV (sv));
		305	}
		306
		307	static void
133	static void aio_grp_feed (aio_req grp)	308	aio_grp_feed (aio_req grp)
134	{	309	{
135	while (grp->length < grp->fd2)	310	if (grp->sv2 && SvOK (grp->sv2))
136	{	311	{
137	int old_len = grp->length;	312	dSP;
138		313
139	if (grp->fh2 && SvOK (grp->fh2))	314	ENTER;
		315	SAVETMPS;
		316	PUSHMARK (SP);
		317	XPUSHs (req_sv (grp, aio_grp_stash));
		318	PUTBACK;
		319	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		320	SPAGAIN;
		321	FREETMPS;
		322	LEAVE;
		323	}
		324	}
		325
		326	static void
		327	req_submit (eio_req *req)
		328	{
		329	eio_submit (req);
		330
		331	if (expect_false (on_next_submit))
		332	{
		333	dSP;
		334	SV *cb = sv_2mortal (on_next_submit);
		335
		336	on_next_submit = 0;
		337
		338	PUSHMARK (SP);
		339	PUTBACK;
		340	call_sv (cb, G_DISCARD | G_EVAL);
		341	}
		342	}
		343
		344	static int
		345	req_invoke (eio_req *req)
		346	{
		347	if (req->flags & FLAG_SV2_RO_OFF)
		348	SvREADONLY_off (req->sv2);
		349
		350	if (!EIO_CANCELLED (req) && req->callback)
		351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
		356	ENTER;
		357	SAVETMPS;
		358	PUSHMARK (SP);
		359	EXTEND (SP, 1);
		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
140	{	363	{
141	dSP;	364	sv_result = sv_result_cache; sv_result_cache = 0;
142		365	SvIV_set (sv_result, req->result);
143	ENTER;	366	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	}	367	}
153		368	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	369	{
157	SvREFCNT_dec (grp->fh2);	370	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	371	SvREADONLY_on (sv_result);
159	break;
160	}	372	}
		373
		374	switch (req->type)
		375	{
		376	case EIO_WD_OPEN:
		377	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		378	break;
		379
		380	case EIO_READDIR:
		381	{
		382	SV *rv = &PL_sv_undef;
		383
		384	if (req->result >= 0)
		385	{
		386	int i;
		387	char *names = (char *)req->ptr2;
		388	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		389	AV *av = newAV ();
		390
		391	av_extend (av, req->result - 1);
		392
		393	for (i = 0; i < req->result; ++i)
		394	{
		395	if (req->int1 & EIO_READDIR_DENTS)
		396	{
		397	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		398
		399	if (req->int1 & EIO_READDIR_CUSTOM2)
		400	{
		401	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		402	AV *avent = newAV ();
		403
		404	av_extend (avent, 2);
		405
		406	if (!sv_type [ent->type])
		407	{
		408	sv_type [ent->type] = newSViv (ent->type);
		409	SvREADONLY_on (sv_type [ent->type]);
		410	}
		411
		412	av_store (avent, 0, namesv);
		413	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		414	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		415
		416	av_store (av, i, newRV_noinc ((SV *)avent));
		417	}
		418	else
		419	av_store (av, i, namesv);
		420
		421	++ent;
		422	}
		423	else
		424	{
		425	SV *name = newSVpv (names, 0);
		426	av_store (av, i, name);
		427	names += SvCUR (name) + 1;
		428	}
		429	}
		430
		431	rv = sv_2mortal (newRV_noinc ((SV *)av));
		432	}
		433
		434	PUSHs (rv);
		435
		436	if (req->int1 & EIO_READDIR_CUSTOM1)
		437	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		438	}
		439	break;
		440
		441	case EIO_OPEN:
		442	{
		443	/* convert fd to fh */
		444	SV *fh = &PL_sv_undef;
		445
		446	if (req->result >= 0)
		447	{
		448	GV *gv = (GV *)sv_newmortal ();
		449	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		450	char sym [64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
		455
		456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	(int)req->result
		462	);
		463
		464	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		465	fh = (SV *)gv;
		466	}
		467
		468	PUSHs (fh);
		469	}
		470	break;
		471
		472	case EIO_STATVFS:
		473	case EIO_FSTATVFS:
		474	{
		475	SV *rv = &PL_sv_undef;
		476
		477	#ifndef _WIN32
		478	if (req->result >= 0)
		479	{
		480	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		481	HV *hv = newHV ();
		482
		483	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		484
		485	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		486	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		487	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		488	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		489	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		490	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		491	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		492	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		493	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		494	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		495	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		496	}
		497	#endif
		498
		499	PUSHs (rv);
		500	}
		501
		502	break;
		503
		504	case EIO_GROUP:
		505	req->int1 = 2; /* mark group as finished */
		506
		507	if (req->sv1)
		508	{
		509	int i;
		510	AV *av = (AV *)req->sv1;
		511
		512	EXTEND (SP, AvFILL (av) + 1);
		513	for (i = 0; i <= AvFILL (av); ++i)
		514	PUSHs (*av_fetch (av, i, 0));
		515	}
		516	break;
		517
		518	case EIO_NOP:
		519	case EIO_BUSY:
		520	break;
		521
		522	case EIO_READLINK:
		523	case EIO_REALPATH:
		524	if (req->result > 0)
		525	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		526	break;
		527
		528	case EIO_STAT:
		529	case EIO_LSTAT:
		530	case EIO_FSTAT:
		531	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		532
		533	if (!(PL_laststatval = req->result))
		534	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		535	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		536
		537	PUSHs (sv_result);
		538	break;
		539
		540	case EIO_SEEK:
		541	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		542	break;
		543
		544	case EIO_READ:
		545	{
		546	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		547	*SvEND (req->sv2) = 0;
		548	SvPOK_only (req->sv2);
		549	SvSETMAGIC (req->sv2);
		550	PUSHs (sv_result);
		551	}
		552	break;
		553
		554	case EIO_CUSTOM:
		555	if (req->feed == fiemap)
		556	{
		557	#if HAVE_FIEMAP
		558	if (!req->result)
		559	{
		560	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		561
		562	if (fiemap->fm_extent_count)
		563	{
		564	AV *av = newAV ();
		565	int i;
		566
		567	while (fiemap->fm_mapped_extents)
		568	{
		569	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		570	AV *ext_av = newAV ();
		571
		572	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		573	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		574	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		575	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		576
		577	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		578	}
		579
		580	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		581	}
		582	else
		583	{
		584	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		585	PUSHs (sv_result);
		586	}
		587	}
		588	#endif
		589	}
		590	else
		591	PUSHs (sv_result);
		592	break;
		593
		594	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		595	if (req->result > 0)
		596	SvIV_set (sv_result, 0);
		597	/* FALLTHROUGH */
		598
		599	default:
		600	PUSHs (sv_result);
		601	break;
		602	}
		603
		604	errno = req->errorno;
		605
		606	PUTBACK;
		607	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		608	SPAGAIN;
		609
		610	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		611	SvREFCNT_dec (sv_result);
		612	else
		613	sv_result_cache = sv_result;
		614
		615	FREETMPS;
		616	LEAVE;
		617
		618	PUTBACK;
161	}	619	}
162	}
163		620
164	static void aio_grp_dec (aio_req grp)	621	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	}	622	}
178		623
179	static void poll_wait ()	624	static void
		625	req_destroy (aio_req req)
180	{	626	{
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)	627	if (req->self)
307	{	628	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	629	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	630	SvREFCNT_dec (req->self);
310	}	631	}
311		632
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	633	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	634	SvREFCNT_dec (req->sv2);
		635	SvREFCNT_dec (req->sv3);
		636	SvREFCNT_dec (req->sv4);
315	SvREFCNT_dec (req->callback);	637	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317		638
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320
321	Safefree (req);	639	free (req);
322	}	640	}
323		641
324	static void req_cancel (aio_req req)	642	static void
		643	req_cancel_subs (aio_req grp)
325	{	644	{
326	req->cancelled = 1;
327
328	if (req->type == REQ_GROUP)	645	if (grp->type != EIO_GROUP)
		646	return;
		647
		648	SvREFCNT_dec (grp->sv2);
		649	grp->sv2 = 0;
		650
		651	eio_grp_cancel (grp);
		652	}
		653
		654	static void ecb_cold
		655	create_respipe (void)
		656	{
		657	if (s_epipe_renew (&respipe))
		658	croak ("IO::AIO: unable to initialize result pipe");
		659	}
		660
		661	static void
		662	poll_wait (void)
		663	{
		664	while (eio_nreqs ())
329	{	665	{
330	aio_req sub;	666	int size;
331		667
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	668	X_LOCK (reslock);
333	req_cancel (sub);	669	size = res_queue.size;
		670	X_UNLOCK (reslock);
		671
		672	if (size)
		673	return;
		674
		675	etp_maybe_start_thread ();
		676
		677	s_epipe_wait (&respipe);
334	}	678	}
335	}	679	}
336		680
337	static int poll_cb ()	681	static int
		682	poll_cb (void)
338	{	683	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	684	for (;;)
345	{	685	{
346	pthread_mutex_lock (&reslock);	686	int res = eio_poll ();
347	req = ress;
348		687
349	if (req)	688	if (res > 0)
		689	croak (0);
		690
		691	if (!max_outstanding || max_outstanding > eio_nreqs ())
		692	return res;
		693
		694	poll_wait ();
		695	}
		696	}
		697
		698	static void ecb_cold
		699	reinit (void)
		700	{
		701	create_respipe ();
		702
		703	if (eio_init (want_poll, done_poll) < 0)
		704	croak ("IO::AIO: unable to initialise eio library");
		705	}
		706
		707	/*****************************************************************************/
		708
		709	#if !_POSIX_MAPPED_FILES
		710	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		711	# define munmap(addr,length) EIO_ENOSYS ()
		712	#endif
		713
		714	#if !_POSIX_MEMORY_PROTECTION
		715	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		716	# define PROT_NONE 0
		717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
		721	#endif
		722
		723	#define MMAP_MAGIC PERL_MAGIC_ext
		724
		725	static int ecb_cold
		726	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		727	{
		728	int old_errno = errno;
		729	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		730	errno = old_errno;
		731
		732	mg->mg_obj = 0; /* just in case */
		733
		734	SvREADONLY_off (sv);
		735
		736	if (SvPVX (sv) != mg->mg_ptr)
		737	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		738
		739	SvCUR_set (sv, 0);
		740	SvPVX (sv) = 0;
		741	SvOK_off (sv);
		742
		743	return 0;
		744	}
		745
		746	static MGVTBL mmap_vtbl = {
		747	0, 0, 0, 0, mmap_free
		748	};
		749
		750	/*****************************************************************************/
		751
		752	static SV *
		753	get_cb (SV *cb_sv)
		754	{
		755	SvGETMAGIC (cb_sv);
		756	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		757	}
		758
		759	static aio_req ecb_noinline
		760	dreq (SV *callback)
		761	{
		762	SV *cb_cv;
		763	aio_req req;
		764	int req_pri = next_pri;
		765	next_pri = EIO_PRI_DEFAULT;
		766
		767	cb_cv = get_cb (callback);
		768
		769	req = calloc (sizeof (*req), 1);
		770	if (!req)
		771	croak ("out of memory during eio_req allocation");
		772
		773	req->callback = SvREFCNT_inc (cb_cv);
		774	req->pri = req_pri;
		775
		776	return req;
		777	}
		778
		779	#define dREQ \
		780	aio_req req = dreq (callback); \
		781
		782	#define REQ_SEND \
		783	PUTBACK; \
		784	req_submit (req); \
		785	SPAGAIN; \
		786	\
		787	if (GIMME_V != G_VOID) \
		788	XPUSHs (req_sv (req, aio_req_stash));
		789
		790	ecb_inline void
		791	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		792	{
		793	if (expect_false (SvROK (path)))
		794	{
		795	SV *rv = SvRV (path);
		796	SV *wdob;
		797
		798	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
350	{	799	{
351	ress = req->next;	800	path = AvARRAY (rv)[1];
		801	wdob = AvARRAY (rv)[0];
352		802
353	if (!ress)	803	if (SvOK (wdob))
354	{	804	{
355	/* read any signals sent by the worker threads */	805	*wd = SvAIO_WD (wdob);
356	char buf [32];	806	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}	807	}
		808	else
		809	*wd = EIO_INVALID_WD;
362	}	810	}
363		811	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	{	812	{
375	req->fd = 1; /* mark request as delayed */	813	*wd = (aio_wd)(long)SvIVX (rv);
376	continue;	814	*wdsv = SvREFCNT_inc_NN (rv);
		815	*ptr = ".";
		816	return; /* path set to "." */
377	}	817	}
378	else	818	else
379	{	819	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	}	820	}
400		821
401	return count;	822	*pathsv = newSVsv (path);
		823	*ptr = SvPVbyte_nolen (*pathsv);
402	}	824	}
403		825
404	static void *aio_proc(void *arg);	826	static void ecb_noinline
405		827	req_set_path1 (aio_req req, SV *path)
406	static void start_thread (void)
407	{	828	{
408	sigset_t fullsigset, oldsigset;	829	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	}	830	}
424		831
425	static void req_send (aio_req req)	832	static void ecb_noinline
		833	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
426	{	834	{
427	while (started < wanted && nreqs >= started)	835	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
428	start_thread ();
429		836
430	++nreqs;	837	switch (SvTYPE (rv))
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{	838	{
438	reqe->next = req;	839	case SVt_PVIO:
439	reqe = req;	840	case SVt_PVLV:
		841	case SVt_PVGV:
		842	req->type = type_fh;
		843	req->sv1 = newSVsv (fh_or_path);
		844	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		845	break;
		846
		847	default:
		848	req->type = type_path;
		849	req_set_path1 (req, fh_or_path);
		850	break;
440	}	851	}
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	}	852	}
458		853
459	static void end_thread (void)	854	XS(boot_IO__AIO) ecb_cold;
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464		855
465	req_send (req);	856	MODULE = IO::AIO PACKAGE = IO::AIO
466	}
467		857
468	static void min_parallel (int nthreads)	858	PROTOTYPES: ENABLE
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473		859
474	static void max_parallel (int nthreads)	860	BOOT:
475	{	861	{
476	int cur = started;	862	static const struct {
		863	const char *name;
		864	IV iv;
		865	} *civ, const_iv[] = {
		866	# define const_niv(name, value) { # name, (IV) value },
		867	# define const_iv(name) { # name, (IV) name },
		868	# define const_eio(name) { # name, (IV) EIO_ ## name },
477		869
478	if (wanted > nthreads)	870	/* you have to re-run ./gendef0 after adding/Removing any constants here */
479	wanted = nthreads;
480		871
481	while (cur > wanted)	872	const_iv (ENOSYS)
482	{	873	const_iv (EXDEV)
483	end_thread ();	874	const_iv (EBADR)
484	cur--;
485	}
486		875
487	while (started > wanted)	876	const_iv (O_RDONLY)
488	{	877	const_iv (O_WRONLY)
489	poll_wait ();	878	const_iv (O_RDWR)
490	poll_cb ();	879	const_iv (O_CREAT)
491	}	880	const_iv (O_TRUNC)
492	}	881	const_iv (O_EXCL)
		882	const_iv (O_APPEND)
493		883
494	static void create_pipe ()	884	const_iv (O_ASYNC)
495	{	885	const_iv (O_DIRECT)
496	if (pipe (respipe))	886	const_iv (O_NOATIME)
497	croak ("unable to initialize result pipe");
498		887
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	888	const_iv (O_CLOEXEC)
500	croak ("cannot set result pipe to nonblocking mode");	889	const_iv (O_NOCTTY)
		890	const_iv (O_NOFOLLOW)
		891	const_iv (O_NONBLOCK)
		892	const_iv (O_EXEC)
		893	const_iv (O_SEARCH)
		894	const_iv (O_DIRECTORY)
		895	const_iv (O_DSYNC)
		896	const_iv (O_RSYNC)
		897	const_iv (O_SYNC)
		898	const_iv (O_TTY_INIT)
501		899
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	900	const_iv (S_IFIFO)
503	croak ("cannot set result pipe to nonblocking mode");	901	const_iv (S_IFCHR)
504	}	902	const_iv (S_IFBLK)
		903	const_iv (S_IFLNK)
		904	const_iv (S_IFREG)
		905	const_iv (S_IFDIR)
		906	const_iv (S_IFWHT)
		907	const_iv (S_IFSOCK)
		908	const_iv (S_IFMT)
505		909
506	/*****************************************************************************/	910	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
507	/* work around various missing functions */	911	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		912	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		913	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		914	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		915	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
508		916
509	#if !HAVE_PREADWRITE	917	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
510	# define pread aio_pread	918	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
511	# define pwrite aio_pwrite	919	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		920	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		921	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
512		922
513	/*	923	const_iv (ST_RDONLY)
514	* make our pread/pwrite safe against themselves, but not against	924	const_iv (ST_NOSUID)
515	* normal read/write by using a mutex. slows down execution a lot,	925	const_iv (ST_NODEV)
516	* but that's your problem, not mine.	926	const_iv (ST_NOEXEC)
517	*/	927	const_iv (ST_SYNCHRONOUS)
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	928	const_iv (ST_MANDLOCK)
		929	const_iv (ST_WRITE)
		930	const_iv (ST_APPEND)
		931	const_iv (ST_IMMUTABLE)
		932	const_iv (ST_NOATIME)
		933	const_iv (ST_NODIRATIME)
		934	const_iv (ST_RELATIME)
519		935
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	936	const_iv (PROT_NONE)
521	{	937	const_iv (PROT_EXEC)
522	ssize_t res;	938	const_iv (PROT_READ)
523	off_t ooffset;	939	const_iv (PROT_WRITE)
524		940
525	pthread_mutex_lock (&preadwritelock);	941	/*const_iv (MAP_FIXED)*/
526	ooffset = lseek (fd, 0, SEEK_CUR);	942	const_iv (MAP_PRIVATE)
527	lseek (fd, offset, SEEK_SET);	943	const_iv (MAP_SHARED)
528	res = read (fd, buf, count);	944	const_iv (MAP_ANONYMOUS)
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531		945
532	return res;	946	/* linuxish */
533	}	947	const_iv (MAP_HUGETLB)
		948	const_iv (MAP_LOCKED)
		949	const_iv (MAP_NORESERVE)
		950	const_iv (MAP_POPULATE)
		951	const_iv (MAP_NONBLOCK)
534		952
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	953	const_iv (FIEMAP_FLAG_SYNC)
536	{	954	const_iv (FIEMAP_FLAG_XATTR)
537	ssize_t res;	955	const_iv (FIEMAP_FLAGS_COMPAT)
538	off_t ooffset;	956	const_iv (FIEMAP_EXTENT_LAST)
		957	const_iv (FIEMAP_EXTENT_UNKNOWN)
		958	const_iv (FIEMAP_EXTENT_DELALLOC)
		959	const_iv (FIEMAP_EXTENT_ENCODED)
		960	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		961	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		962	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		963	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		964	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		965	const_iv (FIEMAP_EXTENT_MERGED)
		966	const_iv (FIEMAP_EXTENT_SHARED)
539		967
540	pthread_mutex_lock (&preadwritelock);	968	const_iv (SPLICE_F_MOVE)
541	ooffset = lseek (fd, 0, SEEK_CUR);	969	const_iv (SPLICE_F_NONBLOCK)
542	lseek (fd, offset, SEEK_SET);	970	const_iv (SPLICE_F_MORE)
543	res = write (fd, buf, count);	971	const_iv (SPLICE_F_GIFT)
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546		972
547	return res;	973	const_iv (SEEK_DATA)
548	}	974	const_iv (SEEK_HOLE)
549	#endif
550		975
551	#if !HAVE_FDATASYNC	976	/* libeio constants */
552	# define fdatasync fsync	977	const_eio (SEEK_SET)
553	#endif	978	const_eio (SEEK_CUR)
		979	const_eio (SEEK_END)
554		980
555	#if !HAVE_READAHEAD	981	const_eio (MCL_FUTURE)
556	# define readahead aio_readahead	982	const_eio (MCL_CURRENT)
557		983
558	static ssize_t readahead (int fd, off_t offset, size_t count)	984	const_eio (MS_ASYNC)
559	{	985	const_eio (MS_INVALIDATE)
560	char readahead_buf[4096];	986	const_eio (MS_SYNC)
561		987
562	while (count > 0)	988	const_eio (MT_MODIFY)
563	{
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565		989
566	pread (fd, readahead_buf, len, offset);	990	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
567	offset += len;	991	const_eio (SYNC_FILE_RANGE_WRITE)
568	count -= len;	992	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
569	}
570		993
571	errno = 0;	994	const_eio (FALLOC_FL_KEEP_SIZE)
572	}	995	const_eio (FALLOC_FL_PUNCH_HOLE)
573	#endif
574		996
575	#if !HAVE_READDIR_R	997	const_eio (READDIR_DENTS)
576	# define readdir_r aio_readdir_r	998	const_eio (READDIR_DIRS_FIRST)
		999	const_eio (READDIR_STAT_ORDER)
		1000	const_eio (READDIR_FOUND_UNKNOWN)
577		1001
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	const_eio (DT_UNKNOWN)
579		1003	const_eio (DT_FIFO)
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1004	const_eio (DT_CHR)
581	{	1005	const_eio (DT_DIR)
582	struct dirent *e;	1006	const_eio (DT_BLK)
583	int errorno;	1007	const_eio (DT_REG)
584		1008	const_eio (DT_LNK)
585	pthread_mutex_lock (&readdirlock);	1009	const_eio (DT_SOCK)
586		1010	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	}	1011	};
630		1012
631	# elif __hpux	1013	aio_stash = gv_stashpv ("IO::AIO" , 1);
632	res = sendfile (ofd, ifd, offset, count, 0, 0);	1014	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1015	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1016	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
633		1017
634	# elif __solaris	1018	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
635	{	1019	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
636	struct sendfilevec vec;
637	size_t sbytes;
638		1020
639	vec.sfv_fd = ifd;	1021	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643		1022
644	res = sendfilev (ofd, &vec, 1, &sbytes);	1023	reinit ();
		1024	}
645		1025
646	if (res < 0 && sbytes)	1026	void
		1027	reinit ()
		1028	PROTOTYPE:
		1029
		1030	void
		1031	max_poll_reqs (unsigned int nreqs)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_max_poll_reqs (nreqs);
		1035
		1036	void
		1037	max_poll_time (double nseconds)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_poll_time (nseconds);
		1041
		1042	void
		1043	min_parallel (unsigned int nthreads)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_min_parallel (nthreads);
		1047
		1048	void
		1049	max_parallel (unsigned int nthreads)
		1050	PROTOTYPE: $
		1051	CODE:
		1052	eio_set_max_parallel (nthreads);
		1053
		1054	void
		1055	max_idle (unsigned int nthreads)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	eio_set_max_idle (nthreads);
		1059
		1060	void
		1061	idle_timeout (unsigned int seconds)
		1062	PROTOTYPE: $
		1063	CODE:
		1064	eio_set_idle_timeout (seconds);
		1065
		1066	void
		1067	max_outstanding (unsigned int maxreqs)
		1068	PROTOTYPE: $
		1069	CODE:
		1070	max_outstanding = maxreqs;
		1071
		1072	void
		1073	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1074	PPCODE:
		1075	{
		1076	dREQ;
		1077
		1078	req->type = EIO_WD_OPEN;
		1079	req_set_path1 (req, pathname);
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1086	PPCODE:
		1087	{
		1088	dREQ;
		1089
		1090	req->type = EIO_OPEN;
		1091	req_set_path1 (req, pathname);
		1092	req->int1 = flags;
		1093	req->int2 = mode;
		1094
		1095	REQ_SEND;
		1096	}
		1097
		1098	void
		1099	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1100	ALIAS:
		1101	aio_fsync = EIO_FSYNC
		1102	aio_fdatasync = EIO_FDATASYNC
		1103	aio_syncfs = EIO_SYNCFS
		1104	PPCODE:
		1105	{
		1106	int fd = s_fileno_croak (fh, 0);
		1107	dREQ;
		1108
		1109	req->type = ix;
		1110	req->sv1 = newSVsv (fh);
		1111	req->int1 = fd;
		1112
		1113	REQ_SEND;
		1114	}
		1115
		1116	void
		1117	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_SYNC_FILE_RANGE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->offs = offset;
647	res = sbytes;	1127	req->size = nbytes;
648	}	1128	req->int2 = flags;
649		1129
650	# endif	1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	int fd = s_fileno_croak (fh, 0);
		1138	dREQ;
		1139
		1140	req->type = EIO_FALLOCATE;
		1141	req->sv1 = newSVsv (fh);
		1142	req->int1 = fd;
		1143	req->int2 = mode;
		1144	req->offs = offset;
		1145	req->size = len;
		1146
		1147	REQ_SEND;
		1148	}
		1149
		1150	void
		1151	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1155	int fd = s_fileno_croak (fh, 0);
		1156	dREQ;
		1157
		1158	if (expect_false (close_fd < 0))
		1159	{
		1160	int pipefd [2];
		1161
		1162	if (
		1163	#ifdef _WIN32
		1164	_pipe (pipefd, 1, _O_BINARY) < 0
651	#else	1165	#else
652	res = -1;	1166	pipe (pipefd) < 0
653	errno = ENOSYS;	1167	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
654	#endif	1168	#endif
655		1169	|| 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	{	1170	)
676	if (cnt && !res) res = -1;	1171	abort (); /*D*/
677	break;
678	}
679		1172
680	cnt = write (ofd, buf, cnt);	1173	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: /*TODO: should not be handled here */
827	case REQ_NOP: /*TODO: should not be handled here */
828	case REQ_QUIT:
829	break;
830
831	default:
832	req->result = ENOSYS;
833	break;
834	}	1174	}
835		1175
836	req->errorno = errno;	1176	req->type = EIO_DUP2;
837		1177	req->int1 = close_fd;
838	pthread_mutex_lock (&reslock);	1178	req->sv2 = newSVsv (fh);
839
840	req->next = 0;	1179	req->int2 = fd;
841		1180
842	if (rese)	1181	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	}	1182	}
861		1183
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	1184	void
953	min_parallel (nthreads)	1185	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:	1186	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: $$$;$
977	PPCODE:
978	{	1187	{
		1188	int fd = s_fileno_croak (fh, 0);
979	dREQ;	1189	dREQ;
980		1190
981	req->type = REQ_OPEN;	1191	req->type = EIO_SEEK;
982	req->data = newSVsv (pathname);	1192	req->sv1 = newSVsv (fh);
983	req->dataptr = SvPVbyte_nolen (req->data);	1193	req->int1 = fd;
984	req->fd = flags;	1194	req->offs = SvVAL64 (offset);
985	req->mode = mode;	1195	req->int2 = whence;
986		1196
987	REQ_SEND;	1197	REQ_SEND;
988	}	1198	}
989		1199
990	void	1200	void
991	aio_close (fh,callback=&PL_sv_undef)	1201	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	1202	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC
998	aio_fdatasync = REQ_FDATASYNC
999	PPCODE:
1000	{
1001	dREQ;
1002
1003	req->type = ix;
1004	req->fh = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1006
1007	REQ_SEND (req);
1008	}
1009
1010	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:
1019	aio_read = REQ_READ	1203	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	1204	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	1205	PPCODE:
1023	{	1206	{
1024	aio_req req;
1025	STRLEN svlen;	1207	STRLEN svlen;
		1208	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	1209	char *svptr = SvPVbyte (data, svlen);
1027		1210	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		1211
1031	if (dataoffset < 0)	1212	if (dataoffset < 0)
1032	dataoffset += svlen;	1213	dataoffset += svlen;
1033		1214
1034	if (dataoffset < 0 || dataoffset > svlen)	1215	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	1216	croak ("dataoffset outside of data scalar");
1036		1217
1037	if (ix == REQ_WRITE)	1218	if (ix == EIO_WRITE)
1038	{	1219	{
1039	/* write: check length and adjust. */	1220	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	1221	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	1222	len = svlen - dataoffset;
1042	}	1223	}
1043	else	1224	else
1044	{	1225	{
1045	/* read: grow scalar as necessary */	1226	/* read: check type and grow scalar as necessary */
		1227	SvUPGRADE (data, SVt_PV);
		1228	if (SvLEN (data) >= SvCUR (data))
1046	svptr = SvGROW (data, length + dataoffset);	1229	svptr = SvGROW (data, len + dataoffset + 1);
		1230	else if (SvCUR (data) < len + dataoffset)
		1231	croak ("length + dataoffset outside of scalar, and cannot grow");
1047	}	1232	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		1233
1052	{	1234	{
1053	dREQ;	1235	dREQ;
1054		1236
1055	req->type = ix;	1237	req->type = ix;
1056	req->fh = newSVsv (fh);	1238	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1239	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	1240	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	1241	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	1242	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	1243	req->ptr2 = (char *)svptr + dataoffset;
		1244	req->stroffset = dataoffset;
1063		1245
1064	if (!SvREADONLY (data))	1246	if (!SvREADONLY (data))
1065	{	1247	{
1066	SvREADONLY_on (data);	1248	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	1249	req->flags |= FLAG_SV2_RO_OFF;
1068	}	1250	}
1069		1251
1070	REQ_SEND;	1252	REQ_SEND;
1071	}	1253	}
1072	}	1254	}
1073		1255
1074	void	1256	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1257	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1076	SV * out_fh	1258	ALIAS:
1077	SV * in_fh	1259	aio_readlink = EIO_READLINK
1078	UV in_offset	1260	aio_realpath = EIO_REALPATH
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$
1082	PPCODE:	1261	PPCODE:
1083	{	1262	{
		1263	dREQ;
		1264
		1265	req->type = ix;
		1266	req_set_path1 (req, pathname);
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	int ifd = s_fileno_croak (in_fh , 0);
		1276	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1277	dREQ;
1085		1278
1086	req->type = REQ_SENDFILE;	1279	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1280	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1281	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1282	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1283	req->int2 = ifd;
1091	req->offset = in_offset;	1284	req->offs = in_offset;
1092	req->length = length;	1285	req->size = length;
1093		1286
1094	REQ_SEND;	1287	REQ_SEND;
1095	}	1288	}
1096		1289
1097	void	1290	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1291	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1292	PPCODE:
1105	{	1293	{
		1294	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1295	dREQ;
1107		1296
1108	req->type = REQ_READAHEAD;	1297	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1298	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1299	req->int1 = fd;
1111	req->offset = offset;	1300	req->offs = offset;
1112	req->length = length;	1301	req->size = length;
1113		1302
1114	REQ_SEND;	1303	REQ_SEND;
1115	}	1304	}
1116		1305
1117	void	1306	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1307	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1308	ALIAS:
1122	aio_stat = REQ_STAT	1309	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1310	aio_lstat = EIO_LSTAT
		1311	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1312	PPCODE:
1125	{	1313	{
1126	dREQ;	1314	dREQ;
1127		1315
1128	New (0, req->statdata, 1, Stat_t);	1316	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		1317
1148	REQ_SEND;	1318	REQ_SEND;
1149	}	1319	}
1150		1320
		1321	UV
		1322	major (UV dev)
		1323	ALIAS:
		1324	minor = 1
		1325	CODE:
		1326	RETVAL = ix ? major (dev) : minor (dev);
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	UV
		1331	makedev (UV maj, UV min)
		1332	CODE:
		1333	RETVAL = makedev (maj, min);
		1334	OUTPUT:
		1335	RETVAL
		1336
1151	void	1337	void
		1338	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1339	PPCODE:
		1340	{
		1341	dREQ;
		1342
		1343	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1344	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1345	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1346
		1347	REQ_SEND;
		1348	}
		1349
		1350	void
		1351	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1352	PPCODE:
		1353	{
		1354	dREQ;
		1355
		1356	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1357	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1358
		1359	REQ_SEND;
		1360	}
		1361
		1362	void
		1363	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->int2 = mode;
		1369	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
		1375	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	dREQ;
		1379
		1380	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1381	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1382	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	dREQ;
		1392
		1393	req->type = EIO_READDIR;
		1394	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1395
		1396	if (flags & EIO_READDIR_DENTS)
		1397	req->int1 |= EIO_READDIR_CUSTOM2;
		1398
		1399	req_set_path1 (req, pathname);
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	dREQ;
		1409
		1410	req->type = EIO_MKDIR;
		1411	req->int2 = mode;
		1412	req_set_path1 (req, pathname);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1418	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1419	ALIAS:
1156	aio_unlink = REQ_UNLINK	1420	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1421	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1422	aio_readdir = EIO_READDIR
1159	PPCODE:	1423	PPCODE:
1160	{	1424	{
1161	dREQ;	1425	dREQ;
1162		1426
1163	req->type = ix;	1427	req->type = ix;
1164	req->data = newSVsv (pathname);	1428	req_set_path1 (req, pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1429
1166
1167	REQ_SEND;	1430	REQ_SEND;
1168	}	1431	}
1169		1432
1170	void	1433	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1434	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1435	ALIAS:
1176	aio_link = REQ_LINK	1436	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1437	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1438	aio_rename = EIO_RENAME
1179	PPCODE:	1439	PPCODE:
1180	{	1440	{
		1441	eio_wd wd2 = 0;
1181	dREQ;	1442	dREQ;
1182		1443
1183	req->type = ix;	1444	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1445	req_set_path1 (req, oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1446	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1186	req->data = newSVsv (newpath);	1447	req->int3 = (long)wd2;
1187	req->dataptr = SvPVbyte_nolen (req->data);
1188		1448
1189	REQ_SEND;	1449	REQ_SEND;
1190	}	1450	}
1191		1451
1192	void	1452	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1453	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1454	PPCODE:
1197	{	1455	{
1198	dREQ;	1456	dREQ;
1199		1457
1200	req->type = REQ_SLEEP;	1458	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1459	req->int2 = (mode_t)mode;
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1460	req->offs = dev;
1203		1461	req_set_path1 (req, pathname);
		1462
1204	REQ_SEND;	1463	REQ_SEND;
1205	}	1464	}
1206		1465
1207	void	1466	void
1208	aio_group (callback=&PL_sv_undef)	1467	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1209	SV * callback	1468	ALIAS:
1210	PROTOTYPE: ;$	1469	aio_mtouch = EIO_MTOUCH
		1470	aio_msync = EIO_MSYNC
1211	PPCODE:	1471	PPCODE:
1212	{	1472	{
		1473	STRLEN svlen;
		1474	char *svptr = SvPVbyte (data, svlen);
		1475	UV len = SvUV (length);
		1476
		1477	if (offset < 0)
		1478	offset += svlen;
		1479
		1480	if (offset < 0 || offset > svlen)
		1481	croak ("offset outside of scalar");
		1482
		1483	if (!SvOK (length) || len + offset > svlen)
		1484	len = svlen - offset;
		1485
		1486	{
		1487	dREQ;
		1488
		1489	req->type = ix;
		1490	req->sv2 = SvREFCNT_inc (data);
		1491	req->ptr2 = (char *)svptr + offset;
		1492	req->size = len;
		1493	req->int1 = flags;
		1494
		1495	REQ_SEND;
		1496	}
		1497	}
		1498
		1499	void
		1500	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1501	PPCODE:
		1502	{
		1503	STRLEN svlen;
		1504	char *svptr = SvPVbyte (data, svlen);
		1505	UV len = SvUV (length);
		1506
		1507	if (offset < 0)
		1508	offset += svlen;
		1509
		1510	if (offset < 0 || offset > svlen)
		1511	croak ("offset outside of scalar");
		1512
		1513	if (!SvOK (length) || len + offset > svlen)
		1514	len = svlen - offset;
		1515
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCK;
		1520	req->sv2 = SvREFCNT_inc (data);
		1521	req->ptr2 = (char *)svptr + offset;
		1522	req->size = len;
		1523
		1524	REQ_SEND;
		1525	}
		1526	}
		1527
		1528	void
		1529	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1530	PPCODE:
		1531	{
		1532	dREQ;
		1533
		1534	req->type = EIO_MLOCKALL;
		1535	req->int1 = flags;
		1536
		1537	REQ_SEND;
		1538	}
		1539
		1540	void
		1541	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	int fd = s_fileno_croak (fh, 0);
1213	dREQ;	1545	dREQ;
		1546
1214	req->type = REQ_GROUP;	1547	req->type = EIO_CUSTOM;
1215	req_send (req);	1548	req->sv1 = newSVsv (fh);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1549	req->int1 = fd;
1217	}
1218		1550
		1551	req->feed = fiemap;
		1552	#if HAVE_FIEMAP
		1553	/* keep our fingers crossed that the next two types are 64 bit */
		1554	req->offs = start;
		1555	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1556	req->int2 = flags;
		1557	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1558	#endif
		1559
		1560	REQ_SEND;
		1561	}
		1562
1219	void	1563	void
1220	aio_nop (callback=&PL_sv_undef)	1564	aio_busy (double delay, SV *callback=&PL_sv_undef)
1221	SV * callback
1222	PPCODE:	1565	PPCODE:
1223	{	1566	{
1224	dREQ;	1567	dREQ;
1225		1568
1226	req->type = REQ_NOP;	1569	req->type = EIO_BUSY;
		1570	req->nv1 = delay < 0. ? 0. : delay;
1227		1571
1228	REQ_SEND;	1572	REQ_SEND;
1229	}	1573	}
1230		1574
1231	void	1575	void
		1576	aio_group (SV *callback=&PL_sv_undef)
		1577	PPCODE:
		1578	{
		1579	dREQ;
		1580
		1581	req->type = EIO_GROUP;
		1582
		1583	req_submit (req);
		1584	XPUSHs (req_sv (req, aio_grp_stash));
		1585	}
		1586
		1587	void
		1588	aio_nop (SV *callback=&PL_sv_undef)
		1589	ALIAS:
		1590	aio_nop = EIO_NOP
		1591	aio_sync = EIO_SYNC
		1592	PPCODE:
		1593	{
		1594	dREQ;
		1595
		1596	req->type = ix;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	int
		1602	aioreq_pri (int pri = 0)
		1603	CODE:
		1604	RETVAL = next_pri;
		1605	if (items > 0)
		1606	{
		1607	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1608	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1609	next_pri = pri;
		1610	}
		1611	OUTPUT:
		1612	RETVAL
		1613
		1614	void
		1615	aioreq_nice (int nice = 0)
		1616	CODE:
		1617	nice = next_pri - nice;
		1618	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1619	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1620	next_pri = nice;
		1621
		1622	void
1232	flush ()	1623	flush ()
1233	PROTOTYPE:
1234	CODE:	1624	CODE:
1235	while (nreqs)	1625	while (eio_nreqs ())
1236	{	1626	{
1237	poll_wait ();	1627	poll_wait ();
1238	poll_cb ();	1628	poll_cb ();
1239	}	1629	}
1240		1630
1241	void	1631	int
1242	poll()	1632	poll ()
1243	PROTOTYPE:
1244	CODE:	1633	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	1634	poll_wait ();
1248	poll_cb ();	1635	RETVAL = poll_cb ();
1249	}
1250
1251	int
1252	poll_fileno()
1253	PROTOTYPE:
1254	CODE:
1255	RETVAL = respipe [0];
1256	OUTPUT:	1636	OUTPUT:
1257	RETVAL	1637	RETVAL
1258		1638
1259	int	1639	int
		1640	poll_fileno ()
		1641	CODE:
		1642	RETVAL = s_epipe_fd (&respipe);
		1643	OUTPUT:
		1644	RETVAL
		1645
		1646	int
1260	poll_cb(...)	1647	poll_cb (...)
1261	PROTOTYPE:	1648	PROTOTYPE:
1262	CODE:	1649	CODE:
1263	RETVAL = poll_cb ();	1650	RETVAL = poll_cb ();
1264	OUTPUT:	1651	OUTPUT:
1265	RETVAL	1652	RETVAL
1266		1653
1267	void	1654	void
1268	poll_wait()	1655	poll_wait ()
1269	PROTOTYPE:
1270	CODE:	1656	CODE:
1271	if (nreqs)
1272	poll_wait ();	1657	poll_wait ();
1273		1658
1274	int	1659	int
1275	nreqs()	1660	nreqs ()
1276	PROTOTYPE:
1277	CODE:	1661	CODE:
1278	RETVAL = nreqs;	1662	RETVAL = eio_nreqs ();
1279	OUTPUT:	1663	OUTPUT:
1280	RETVAL	1664	RETVAL
1281		1665
		1666	int
		1667	nready ()
		1668	CODE:
		1669	RETVAL = eio_nready ();
		1670	OUTPUT:
		1671	RETVAL
		1672
		1673	int
		1674	npending ()
		1675	CODE:
		1676	RETVAL = eio_npending ();
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	int
		1681	nthreads ()
		1682	CODE:
		1683	RETVAL = eio_nthreads ();
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	int
		1688	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1689	CODE:
		1690	RETVAL = posix_fadvise (fh, offset, length, advice);
		1691	OUTPUT:
		1692	RETVAL
		1693
		1694	IV
		1695	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1696	CODE:
		1697	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701	void
		1702	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1703	PPCODE:
		1704	sv_unmagic (scalar, MMAP_MAGIC);
		1705	{
		1706	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1707	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1708	if (addr == (void *)-1)
		1709	XSRETURN_NO;
		1710
		1711	sv_force_normal (scalar);
		1712
		1713	/* we store the length in mg_obj, as namlen is I32 :/ */
		1714	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1715	->mg_obj = (SV *)length;
		1716
		1717	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1718
		1719	if (!(prot & PROT_WRITE))
		1720	SvREADONLY_on (scalar);
		1721
		1722	if (SvLEN (scalar))
		1723	Safefree (SvPVX (scalar));
		1724
		1725	SvPVX (scalar) = (char *)addr;
		1726	SvCUR_set (scalar, length);
		1727	SvLEN_set (scalar, 0);
		1728	SvPOK_only (scalar);
		1729
		1730	XSRETURN_YES;
		1731	}
		1732
		1733	void
		1734	munmap (SV *scalar)
		1735	CODE:
		1736	sv_unmagic (scalar, MMAP_MAGIC);
		1737
		1738	int
		1739	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1740	ALIAS:
		1741	mprotect = 1
		1742	CODE:
		1743	{
		1744	STRLEN svlen;
		1745	void *addr = SvPVbyte (scalar, svlen);
		1746	size_t len = SvUV (length);
		1747
		1748	if (offset < 0)
		1749	offset += svlen;
		1750
		1751	if (offset < 0 || offset > svlen)
		1752	croak ("offset outside of scalar");
		1753
		1754	if (!SvOK (length) || len + offset > svlen)
		1755	len = svlen - offset;
		1756
		1757	addr = (void *)(((intptr_t)addr) + offset);
		1758	eio_page_align (&addr, &len);
		1759
		1760	switch (ix)
		1761	{
		1762	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1763	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1764	}
		1765	}
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769	int
		1770	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1771	CODE:
		1772	{
		1773	STRLEN svlen;
		1774	void *addr = SvPVbyte (scalar, svlen);
		1775	size_t len = SvUV (length);
		1776
		1777	if (offset < 0)
		1778	offset += svlen;
		1779
		1780	if (offset < 0 || offset > svlen)
		1781	croak ("offset outside of scalar");
		1782
		1783	if (!SvOK (length) || len + offset > svlen)
		1784	len = svlen - offset;
		1785
		1786	addr = (void *)(((intptr_t)addr) + offset);
		1787	eio_page_align (&addr, &len);
		1788	#if _POSIX_MEMLOCK_RANGE
		1789	RETVAL = munlock (addr, len);
		1790	#else
		1791	RETVAL = EIO_ENOSYS ();
		1792	#endif
		1793	}
		1794	OUTPUT:
		1795	RETVAL
		1796
		1797	int
		1798	munlockall ()
		1799	CODE:
		1800	#if _POSIX_MEMLOCK
		1801	munlockall ();
		1802	#else
		1803	RETVAL = EIO_ENOSYS ();
		1804	#endif
		1805	OUTPUT:
		1806	RETVAL
		1807
		1808	int
		1809	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1810	CODE:
		1811	{
		1812	#if HAVE_LINUX_SPLICE
		1813	loff_t off_in_, off_out_;
		1814	RETVAL = splice (
		1815	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1816	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1817	length, flags
		1818	);
		1819	#else
		1820	RETVAL = EIO_ENOSYS ();
		1821	#endif
		1822	}
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	int
		1827	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1828	CODE:
		1829	#if HAVE_LINUX_SPLICE
		1830	RETVAL = tee (rfh, wfh, length, flags);
		1831	#else
		1832	RETVAL = EIO_ENOSYS ();
		1833	#endif
		1834	OUTPUT:
		1835	RETVAL
		1836
		1837	void _on_next_submit (SV *cb)
		1838	CODE:
		1839	SvREFCNT_dec (on_next_submit);
		1840	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1841
1282	PROTOTYPES: DISABLE	1842	PROTOTYPES: DISABLE
1283		1843
		1844	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1845
		1846	BOOT:
		1847	{
		1848	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1849	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1850	}
		1851
		1852	void
		1853	DESTROY (SV *self)
		1854	CODE:
		1855	{
		1856	aio_wd wd = SvAIO_WD (self);
		1857	#if HAVE_AT
		1858	{
		1859	SV *callback = &PL_sv_undef;
		1860	dREQ; /* clobbers next_pri :/ */
		1861	next_pri = req->pri; /* restore next_pri */
		1862	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1863	req->type = EIO_WD_CLOSE;
		1864	req->wd = wd;
		1865	REQ_SEND;
		1866	}
		1867	#else
		1868	eio_wd_close_sync (wd);
		1869	#endif
		1870	}
		1871
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1872	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1873
1286	void	1874	void
1287	cancel (aio_req_ornot req)	1875	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1876	CODE:
1290	req_cancel (req);	1877	eio_cancel (req);
		1878
		1879	void
		1880	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1881	PPCODE:
		1882	{
		1883	if (GIMME_V != G_VOID)
		1884	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1885
		1886	if (items > 1)
		1887	{
		1888	SV *cb_cv =get_cb (callback);
		1889
		1890	SvREFCNT_dec (req->callback);
		1891	req->callback = SvREFCNT_inc (cb_cv);
		1892	}
		1893	}
1291		1894
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1895	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1896
1294	void	1897	void
1295	add (aio_req grp, ...)	1898	add (aio_req grp, ...)
1296	PPCODE:	1899	PPCODE:
1297	{	1900	{
1298	int i;	1901	int i;
1299	aio_req req;
1300		1902
1301	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1905
1304	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1305	{	1907	{
		1908	aio_req req;
		1909
1306	if (GIMME_V != G_VOID)	1910	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1911	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1912
1309	req = SvAIO_REQ (ST (i));	1913	req = SvAIO_REQ (ST (i));
1310		1914
1311	if (req)	1915	if (req)
1312	{	1916	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	}	1917	}
1325	}	1918	}
		1919
		1920	void
		1921	cancel_subs (aio_req_ornot req)
		1922	CODE:
		1923	req_cancel_subs (req);
1326		1924
1327	void	1925	void
1328	result (aio_req grp, ...)	1926	result (aio_req grp, ...)
1329	CODE:	1927	CODE:
1330	{	1928	{
1331	int i;	1929	int i;
		1930	AV *av;
		1931
		1932	grp->errorno = errno;
		1933
1332	AV *av = newAV ();	1934	av = newAV ();
		1935	av_extend (av, items - 1);
1333		1936
1334	for (i = 1; i < items; ++i )	1937	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1938	av_push (av, newSVsv (ST (i)));
1336		1939
1337	SvREFCNT_dec (grp->data);	1940	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1941	grp->sv1 = (SV *)av;
1339	}	1942	}
1340		1943
1341	void	1944	void
1342	lock (aio_req grp)	1945	errno (aio_req grp, int errorno = errno)
		1946	CODE:
		1947	grp->errorno = errorno;
		1948
		1949	void
		1950	limit (aio_req grp, int limit)
1343	CODE:	1951	CODE:
1344	++grp->length;	1952	eio_grp_limit (grp, limit);
1345		1953
1346	void	1954	void
1347	unlock (aio_req grp)	1955	feed (aio_req grp, SV *callback=&PL_sv_undef)
1348	CODE:	1956	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	{	1957	{
1361	SvREFCNT_dec (grp->fh2);	1958	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1959	grp->sv2 = newSVsv (callback);
		1960	grp->feed = aio_grp_feed;
1363		1961
1364	if (grp->fd2 <= 0)	1962	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1963	grp->int2 = 2;
1366		1964
1367	aio_grp_feed (grp);	1965	eio_grp_limit (grp, grp->int2);
1368	}	1966	}
1369		1967

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