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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC vs.
Revision 1.238 by root, Thu Jan 21 23:04:46 2016 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
31	# include <sys/socket.h>	85	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
34	# else	144	# else
35	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	146	# endif
37	#endif	147	#endif
38		148
39	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	150	/* also provides const_iv_ and const_niv_ macros for them */
41	# define NAME_MAX 4096	151	#include "def0.h"
42	#endif
43		152
44	#if __ia64	153	#ifndef makedev
45	# define STACKSIZE 65536	154	# define makedev(maj,min) (((maj) << 8) | (min))
		155	#endif
		156	#ifndef major
		157	# define major(dev) ((dev) >> 8)
		158	#endif
		159	#ifndef minor
		160	# define minor(dev) ((dev) & 0xff)
		161	#endif
		162
		163	#if PAGESIZE <= 0
		164	# define PAGESIZE sysconf (_SC_PAGESIZE)
		165	#endif
		166
		167	/*****************************************************************************/
		168
		169	static void
		170	fiemap (eio_req *req)
		171	{
		172	req->result = -1;
		173
		174	#if HAVE_FIEMAP
		175	/* assume some c99 */
		176	struct fiemap *fiemap = 0;
		177	size_t end_offset;
		178	int count = req->int3;
		179
		180	req->flags |= EIO_FLAG_PTR1_FREE;
		181
		182	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		183	/* increase in 3.5kb steps */
		184	if (count < 0)
		185	count = 8;
		186
		187	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		188	errno = ENOMEM;
		189	if (!fiemap)
		190	return;
		191
		192	req->ptr1 = fiemap;
		193
		194	fiemap->fm_start = req->offs;
		195	fiemap->fm_length = req->size;
		196	fiemap->fm_flags = req->int2;
		197	fiemap->fm_extent_count = count;
		198
		199	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		200	return;
		201
		202	if (req->int3 >= 0 /* not autosizing */
		203	|| !fiemap->fm_mapped_extents /* no more extents */
		204	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		205	goto done;
		206
		207	/* else we have to loop -
		208	* it would be tempting (actually I tried that first) to just query the
		209	* number of extents needed, but linux often feels like not returning all
		210	* extents, without telling us it left any out. this complicates
		211	* this quite a bit.
		212	*/
		213
		214	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		215
		216	for (;;)
		217	{
		218	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		219	char scratch[3072];
		220	struct fiemap *incmap = (struct fiemap *)scratch;
		221
		222	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		223	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		224	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		225	incmap->fm_flags = fiemap->fm_flags;
		226	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		227
		228	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		229	return;
		230
		231	if (!incmap->fm_mapped_extents)
		232	goto done;
		233
		234	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		235	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		236	errno = ENOMEM;
		237	if (!fiemap)
		238	return;
		239
		240	req->ptr1 = fiemap;
		241
		242	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		243	{
		244	struct fiemap_extent *e = incmap->fm_extents + count;
		245
		246	if (e->fe_logical + e->fe_length >= end_offset)
		247	goto done;
		248
		249	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		250
		251	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		252	goto done;
		253
		254	}
		255	}
		256
		257	done:
		258	req->result = 0;
		259
46	#else	260	#else
47	# define STACKSIZE 8192	261	errno = ENOSYS;
48	#endif	262	#endif
		263	}
		264
		265	/*****************************************************************************/
49		266
50	enum {	267	enum {
51	REQ_QUIT,	268	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	};	269	};
63		270
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	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;
80	int type;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84
85	unsigned char flags;
86	unsigned char pri;
87
88	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	271	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	272	typedef eio_req *aio_req_ornot;
		273	typedef eio_wd aio_wd;
98		274
99	enum {	275	static SV *on_next_submit;
100	PRI_MIN = -4,	276	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = 4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	277	static int max_outstanding;
112	static int respipe [2];
113		278
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	279	static s_epipe respipe;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		280
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	281	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	282	static void req_cancel (aio_req req);
122	static void req_free (aio_req req);	283
		284	static void
		285	want_poll (void)
		286	{
		287	/* write a dummy byte to the pipe so fh becomes ready */
		288	s_epipe_signal (&respipe);
		289	}
		290
		291	static void
		292	done_poll (void)
		293	{
		294	/* read any signals sent by the worker threads */
		295	s_epipe_drain (&respipe);
		296	}
123		297
124	/* must be called at most once */	298	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	299	static SV *
		300	req_sv (aio_req req, HV *stash)
126	{	301	{
127	if (!req->self)	302	if (!req->self)
128	{	303	{
129	req->self = (SV *)newHV ();	304	req->self = (SV *)newHV ();
130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131	}	306	}
132		307
133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134	}	309	}
135		310
136	static aio_req SvAIO_REQ (SV *sv)	311	static SV *
		312	newSVaio_wd (aio_wd wd)
		313	{
		314	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		315	}
		316
		317	static aio_req
		318	SvAIO_REQ (SV *sv)
137	{	319	{
138	MAGIC *mg;	320	MAGIC *mg;
139		321
140	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	322	if (!SvROK (sv)
		323	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		324	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		325	&& SvSTASH (SvRV (sv)) != aio_req_stash
		326	&& !sv_derived_from (sv, "IO::AIO::REQ")))
141	croak ("object of class " AIO_REQ_KLASS " expected");	327	croak ("object of class IO::AIO::REQ expected");
142		328
143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144		330
145	return mg ? (aio_req)mg->mg_ptr : 0;	331	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	332	}
147		333
		334	static aio_wd
		335	SvAIO_WD (SV *sv)
		336	{
		337	if (!SvROK (sv)
		338	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		339	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		340	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		341
		342	return (aio_wd)(long)SvIVX (SvRV (sv));
		343	}
		344
		345	static SV *
		346	newmortalFH (int fd, int flags)
		347	{
		348	if (fd < 0)
		349	return &PL_sv_undef;
		350
		351	GV *gv = (GV *)sv_newmortal ();
		352	char sym[64];
		353	int symlen;
		354
		355	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		356	gv_init (gv, aio_stash, sym, symlen, 0);
		357
		358	symlen = snprintf (
		359	sym,
		360	sizeof (sym),
		361	"%s&=%d",
		362	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		363	fd
		364	);
		365
		366	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		367	? (SV *)gv : &PL_sv_undef;
		368	}
		369
		370	static void
148	static void aio_grp_feed (aio_req grp)	371	aio_grp_feed (aio_req grp)
149	{	372	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	373	if (grp->sv2 && SvOK (grp->sv2))
151	{	374	{
152	int old_len = grp->length;	375	dSP;
153		376
154	if (grp->fh2 && SvOK (grp->fh2))	377	ENTER;
		378	SAVETMPS;
		379	PUSHMARK (SP);
		380	XPUSHs (req_sv (grp, aio_grp_stash));
		381	PUTBACK;
		382	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		383	SPAGAIN;
		384	FREETMPS;
		385	LEAVE;
		386	}
		387	}
		388
		389	static void
		390	req_submit (eio_req *req)
		391	{
		392	eio_submit (req);
		393
		394	if (expect_false (on_next_submit))
		395	{
		396	dSP;
		397	SV *cb = sv_2mortal (on_next_submit);
		398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
		404	}
		405	}
		406
		407	static int
		408	req_invoke (eio_req *req)
		409	{
		410	if (req->flags & FLAG_SV2_RO_OFF)
		411	SvREADONLY_off (req->sv2);
		412
		413	if (!EIO_CANCELLED (req) && req->callback)
		414	{
		415	dSP;
		416	static SV *sv_result_cache; /* caches the result integer SV */
		417	SV *sv_result;
		418
		419	ENTER;
		420	SAVETMPS;
		421	PUSHMARK (SP);
		422	EXTEND (SP, 1);
		423
		424	/* do not recreate the result IV from scratch each time */
		425	if (expect_true (sv_result_cache))
155	{	426	{
156	dSP;	427	sv_result = sv_result_cache; sv_result_cache = 0;
157		428	SvIV_set (sv_result, req->result);
158	ENTER;	429	SvIOK_only (sv_result);
159	SAVETMPS;
160	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);
164	SPAGAIN;
165	FREETMPS;
166	LEAVE;
167	}	430	}
168		431	else
169	/* stop if no progress has been made */
170	if (old_len == grp->length)
171	{	432	{
172	SvREFCNT_dec (grp->fh2);	433	sv_result = newSViv (req->result);
173	grp->fh2 = 0;	434	SvREADONLY_on (sv_result);
174	break;
175	}	435	}
		436
		437	switch (req->type)
		438	{
		439	case EIO_WD_OPEN:
		440	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		441	break;
		442
		443	case EIO_READDIR:
		444	{
		445	SV *rv = &PL_sv_undef;
		446
		447	if (req->result >= 0)
		448	{
		449	int i;
		450	char *names = (char *)req->ptr2;
		451	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		452	AV *av = newAV ();
		453
		454	av_extend (av, req->result - 1);
		455
		456	for (i = 0; i < req->result; ++i)
		457	{
		458	if (req->int1 & EIO_READDIR_DENTS)
		459	{
		460	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		461
		462	if (req->int1 & EIO_READDIR_CUSTOM2)
		463	{
		464	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		465	AV *avent = newAV ();
		466
		467	av_extend (avent, 2);
		468
		469	if (!sv_type [ent->type])
		470	{
		471	sv_type [ent->type] = newSViv (ent->type);
		472	SvREADONLY_on (sv_type [ent->type]);
		473	}
		474
		475	av_store (avent, 0, namesv);
		476	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		477	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		478
		479	av_store (av, i, newRV_noinc ((SV *)avent));
		480	}
		481	else
		482	av_store (av, i, namesv);
		483
		484	++ent;
		485	}
		486	else
		487	{
		488	SV *name = newSVpv (names, 0);
		489	av_store (av, i, name);
		490	names += SvCUR (name) + 1;
		491	}
		492	}
		493
		494	rv = sv_2mortal (newRV_noinc ((SV *)av));
		495	}
		496
		497	PUSHs (rv);
		498
		499	if (req->int1 & EIO_READDIR_CUSTOM1)
		500	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		501	}
		502	break;
		503
		504	case EIO_OPEN:
		505	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		506	break;
		507
		508	case EIO_STATVFS:
		509	case EIO_FSTATVFS:
		510	{
		511	SV *rv = &PL_sv_undef;
		512
		513	#ifndef _WIN32
		514	if (req->result >= 0)
		515	{
		516	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		517	HV *hv = newHV ();
		518	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		519	* chooses to make it a struct.
		520	*/
		521	unsigned long fsid = 0;
		522	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		523
		524	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		525
		526	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		527	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		528	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		529	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		530	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		531	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		532	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		533	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		534	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		535	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		536	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		537	}
		538	#endif
		539
		540	PUSHs (rv);
		541	}
		542
		543	break;
		544
		545	case EIO_GROUP:
		546	req->int1 = 2; /* mark group as finished */
		547
		548	if (req->sv1)
		549	{
		550	int i;
		551	AV *av = (AV *)req->sv1;
		552
		553	EXTEND (SP, AvFILL (av) + 1);
		554	for (i = 0; i <= AvFILL (av); ++i)
		555	PUSHs (*av_fetch (av, i, 0));
		556	}
		557	break;
		558
		559	case EIO_NOP:
		560	case EIO_BUSY:
		561	break;
		562
		563	case EIO_READLINK:
		564	case EIO_REALPATH:
		565	if (req->result > 0)
		566	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		567	break;
		568
		569	case EIO_STAT:
		570	case EIO_LSTAT:
		571	case EIO_FSTAT:
		572	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		573
		574	if (!(PL_laststatval = req->result))
		575	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		576	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		577
		578	PUSHs (sv_result);
		579	break;
		580
		581	case EIO_SEEK:
		582	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		583	break;
		584
		585	case EIO_READ:
		586	{
		587	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		588	*SvEND (req->sv2) = 0;
		589	SvPOK_only (req->sv2);
		590	SvSETMAGIC (req->sv2);
		591	PUSHs (sv_result);
		592	}
		593	break;
		594
		595	case EIO_CUSTOM:
		596	if (req->feed == fiemap)
		597	{
		598	#if HAVE_FIEMAP
		599	if (!req->result)
		600	{
		601	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		602
		603	if (fiemap->fm_extent_count)
		604	{
		605	AV *av = newAV ();
		606	int i;
		607
		608	while (fiemap->fm_mapped_extents)
		609	{
		610	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		611	AV *ext_av = newAV ();
		612
		613	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		614	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		615	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		616	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		617
		618	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		619	}
		620
		621	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		622	}
		623	else
		624	{
		625	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		626	PUSHs (sv_result);
		627	}
		628	}
		629	#endif
		630	}
		631	else
		632	PUSHs (sv_result);
		633	break;
		634
		635	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		636	if (req->result > 0)
		637	SvIV_set (sv_result, 0);
		638	/* FALLTHROUGH */
		639
		640	default:
		641	PUSHs (sv_result);
		642	break;
		643	}
		644
		645	errno = req->errorno;
		646
		647	PUTBACK;
		648	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		649	SPAGAIN;
		650
		651	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		652	SvREFCNT_dec (sv_result);
		653	else
		654	sv_result_cache = sv_result;
		655
		656	FREETMPS;
		657	LEAVE;
		658
		659	PUTBACK;
176	}	660	}
177	}
178		661
179	static void aio_grp_dec (aio_req grp)	662	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	663	}
193		664
194	static void poll_wait ()	665	static void
		666	req_destroy (aio_req req)
195	{	667	{
196	fd_set rfd;
197
198	while (nreqs)
199	{
200	aio_req req;
201	pthread_mutex_lock (&reslock);
202	req = ress;
203	pthread_mutex_unlock (&reslock);
204
205	if (req)
206	return;
207
208	FD_ZERO(&rfd);
209	FD_SET(respipe [0], &rfd);
210
211	select (respipe [0] + 1, &rfd, 0, 0, 0);
212	}
213	}
214
215	static void req_invoke (aio_req req)
216	{
217	dSP;
218	int errorno = errno;
219
220	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221	return;
222
223	errno = req->errorno;
224
225	ENTER;
226	SAVETMPS;
227	PUSHMARK (SP);
228	EXTEND (SP, 1);
229
230	switch (req->type)
231	{
232	case REQ_READDIR:
233	{
234	SV *rv = &PL_sv_undef;
235
236	if (req->result >= 0)
237	{
238	char *buf = req->data2ptr;
239	AV *av = newAV ();
240
241	while (req->result)
242	{
243	SV *sv = newSVpv (buf, 0);
244
245	av_push (av, sv);
246	buf += SvCUR (sv) + 1;
247	req->result--;
248	}
249
250	rv = sv_2mortal (newRV_noinc ((SV *)av));
251	}
252
253	PUSHs (rv);
254	}
255	break;
256
257	case REQ_OPEN:
258	{
259	/* convert fd to fh */
260	SV *fh;
261
262	PUSHs (sv_2mortal (newSViv (req->result)));
263	PUTBACK;
264	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265	SPAGAIN;
266
267	fh = SvREFCNT_inc (POPs);
268
269	PUSHMARK (SP);
270	XPUSHs (sv_2mortal (fh));
271	}
272	break;
273
274	case REQ_GROUP:
275	req->fd = 2; /* mark group as finished */
276
277	if (req->data)
278	{
279	int i;
280	AV *av = (AV *)req->data;
281
282	EXTEND (SP, AvFILL (av) + 1);
283	for (i = 0; i <= AvFILL (av); ++i)
284	PUSHs (*av_fetch (av, i, 0));
285	}
286	break;
287
288	case REQ_NOP:
289	case REQ_SLEEP:
290	break;
291
292	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;
295	}
296
297
298	PUTBACK;
299	call_sv (req->callback, G_VOID | G_EVAL);
300	SPAGAIN;
301
302	FREETMPS;
303	LEAVE;
304
305	errno = errorno;
306
307	if (SvTRUE (ERRSV))
308	{
309	req_free (req);
310	croak (0);
311	}
312	}
313
314	static void req_free (aio_req req)
315	{
316	if (req->grp)
317	{
318	aio_req grp = req->grp;
319
320	/* unlink request */
321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
323
324	if (grp->grp_first == req)
325	grp->grp_first = req->grp_next;
326
327	aio_grp_dec (grp);
328	}
329
330	if (req->self)	668	if (req->self)
331	{	669	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	670	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	671	SvREFCNT_dec (req->self);
334	}	672	}
335		673
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	674	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
339	SvREFCNT_dec (req->callback);	678	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341		679
342	if (req->type == REQ_READDIR && req->result >= 0)
343	free (req->data2ptr);
344
345	Safefree (req);	680	free (req);
346	}	681	}
347		682
348	static void req_cancel (aio_req req)	683	static void
		684	req_cancel_subs (aio_req grp)
349	{	685	{
350	req->flags |= FLAG_CANCELLED;
351
352	if (req->type == REQ_GROUP)	686	if (grp->type != EIO_GROUP)
		687	return;
		688
		689	SvREFCNT_dec (grp->sv2);
		690	grp->sv2 = 0;
		691
		692	eio_grp_cancel (grp);
		693	}
		694
		695	static void ecb_cold
		696	create_respipe (void)
		697	{
		698	if (s_epipe_renew (&respipe))
		699	croak ("IO::AIO: unable to initialize result pipe");
		700	}
		701
		702	static void
		703	poll_wait (void)
		704	{
		705	while (eio_nreqs ())
353	{	706	{
354	aio_req sub;	707	int size;
355		708
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	709	X_LOCK (EIO_POOL->reslock);
357	req_cancel (sub);	710	size = EIO_POOL->res_queue.size;
		711	X_UNLOCK (EIO_POOL->reslock);
		712
		713	if (size)
		714	return;
		715
		716	etp_maybe_start_thread (EIO_POOL);
		717
		718	s_epipe_wait (&respipe);
358	}	719	}
359	}	720	}
360		721
361	static int poll_cb ()	722	static int
		723	poll_cb (void)
362	{	724	{
363	dSP;
364	int count = 0;
365	int do_croak = 0;
366	aio_req req;
367
368	for (;;)	725	for (;;)
369	{	726	{
370	pthread_mutex_lock (&reslock);	727	int res = eio_poll ();
371	req = ress;
372		728
373	if (req)	729	if (res > 0)
		730	croak (0);
		731
		732	if (!max_outstanding || max_outstanding > eio_nreqs ())
		733	return res;
		734
		735	poll_wait ();
		736	}
		737	}
		738
		739	static void ecb_cold
		740	reinit (void)
		741	{
		742	create_respipe ();
		743
		744	if (eio_init (want_poll, done_poll) < 0)
		745	croak ("IO::AIO: unable to initialise eio library");
		746	}
		747
		748	/*****************************************************************************/
		749
		750	#if !_POSIX_MAPPED_FILES
		751	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		752	# define munmap(addr,length) EIO_ENOSYS ()
		753	#endif
		754
		755	#if !_POSIX_MEMORY_PROTECTION
		756	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		757	#endif
		758
		759	#define MMAP_MAGIC PERL_MAGIC_ext
		760
		761	static int ecb_cold
		762	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		763	{
		764	int old_errno = errno;
		765	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		766	errno = old_errno;
		767
		768	mg->mg_obj = 0; /* just in case */
		769
		770	SvREADONLY_off (sv);
		771
		772	if (SvPVX (sv) != mg->mg_ptr)
		773	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		774
		775	SvCUR_set (sv, 0);
		776	SvPVX (sv) = 0;
		777	SvOK_off (sv);
		778
		779	return 0;
		780	}
		781
		782	static MGVTBL mmap_vtbl = {
		783	0, 0, 0, 0, mmap_free
		784	};
		785
		786	/*****************************************************************************/
		787
		788	static SV *
		789	get_cb (SV *cb_sv)
		790	{
		791	SvGETMAGIC (cb_sv);
		792	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		793	}
		794
		795	static aio_req ecb_noinline
		796	dreq (SV *callback)
		797	{
		798	SV *cb_cv;
		799	aio_req req;
		800	int req_pri = next_pri;
		801	next_pri = EIO_PRI_DEFAULT;
		802
		803	cb_cv = get_cb (callback);
		804
		805	req = calloc (sizeof (*req), 1);
		806	if (!req)
		807	croak ("out of memory during eio_req allocation");
		808
		809	req->callback = SvREFCNT_inc (cb_cv);
		810	req->pri = req_pri;
		811
		812	return req;
		813	}
		814
		815	#define dREQ \
		816	aio_req req = dreq (callback); \
		817
		818	#define REQ_SEND \
		819	PUTBACK; \
		820	req_submit (req); \
		821	SPAGAIN; \
		822	\
		823	if (GIMME_V != G_VOID) \
		824	XPUSHs (req_sv (req, aio_req_stash));
		825
		826	ecb_inline void
		827	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		828	{
		829	if (expect_false (SvROK (path)))
		830	{
		831	SV *rv = SvRV (path);
		832	SV *wdob;
		833
		834	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
374	{	835	{
375	ress = req->next;	836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
376		838
377	if (!ress)	839	if (SvOK (wdob))
378	{	840	{
379	/* read any signals sent by the worker threads */	841	*wd = SvAIO_WD (wdob);
380	char buf [32];	842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
381	while (read (respipe [0], buf, 32) == 32)
382	;
383
384	rese = 0;
385	}	843	}
		844	else
		845	*wd = EIO_INVALID_WD;
386	}	846	}
387		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
388	pthread_mutex_unlock (&reslock);
389
390	if (!req)
391	break;
392
393	--nreqs;
394
395	if (req->type == REQ_QUIT)
396	started--;
397	else if (req->type == REQ_GROUP && req->length)
398	{	848	{
399	req->fd = 1; /* mark request as delayed */	849	*wd = (aio_wd)(long)SvIVX (rv);
400	continue;	850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
401	}	853	}
402	else	854	else
403	{	855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
404	if (req->type == REQ_READ)
405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408	SvREADONLY_off (req->data);
409
410	if (req->statdata)
411	{
412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413	PL_laststatval = req->result;
414	PL_statcache = *(req->statdata);
415	}
416
417	req_invoke (req);
418
419	count++;
420	}
421
422	req_free (req);
423	}	856	}
424		857
425	return count;	858	*pathsv = newSVsv (path);
		859	*ptr = SvPVbyte_nolen (*pathsv);
426	}	860	}
427		861
428	static void *aio_proc(void *arg);	862	static void ecb_noinline
429		863	req_set_path1 (aio_req req, SV *path)
430	static void start_thread (void)
431	{	864	{
432	sigset_t fullsigset, oldsigset;	865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
433	pthread_t tid;
434	pthread_attr_t attr;
435
436	pthread_attr_init (&attr);
437	pthread_attr_setstacksize (&attr, STACKSIZE);
438	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440	sigfillset (&fullsigset);
441	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444	started++;
445
446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
447	}	866	}
448		867
449	static void req_send (aio_req req)	868	static void ecb_noinline
		869	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
450	{	870	{
451	while (started < wanted && nreqs >= started)	871	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
452	start_thread ();
453		872
454	++nreqs;	873	switch (SvTYPE (rv))
455
456	pthread_mutex_lock (&reqlock);
457
458	req->next = 0;
459
460	if (reqe)
461	{	874	{
462	reqe->next = req;	875	case SVt_PVIO:
463	reqe = req;	876	case SVt_PVLV:
		877	case SVt_PVGV:
		878	req->type = type_fh;
		879	req->sv1 = newSVsv (fh_or_path);
		880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		881	break;
		882
		883	default:
		884	req->type = type_path;
		885	req_set_path1 (req, fh_or_path);
		886	break;
464	}	887	}
465	else
466	reqe = reqs = req;
467
468	pthread_cond_signal (&reqwait);
469	pthread_mutex_unlock (&reqlock);
470
471	if (nreqs > max_outstanding)
472	for (;;)
473	{
474	poll_cb ();
475
476	if (nreqs <= max_outstanding)
477	break;
478
479	poll_wait ();
480	}
481	}	888	}
482		889
483	static void end_thread (void)	890	XS(boot_IO__AIO) ecb_cold;
484	{
485	aio_req req;
486	Newz (0, req, 1, aio_cb);
487	req->type = REQ_QUIT;
488		891
489	req_send (req);	892	MODULE = IO::AIO PACKAGE = IO::AIO
490	}
491		893
492	static void min_parallel (int nthreads)	894	PROTOTYPES: ENABLE
493	{
494	if (wanted < nthreads)
495	wanted = nthreads;
496	}
497		895
498	static void max_parallel (int nthreads)	896	BOOT:
499	{	897	{
500	int cur = started;	898	static const struct {
		899	const char *name;
		900	IV iv;
		901	} *civ, const_iv[] = {
		902	# define const_niv(name, value) { # name, (IV) value },
		903	# define const_iv(name) { # name, (IV) name },
		904	# define const_eio(name) { # name, (IV) EIO_ ## name },
501		905
502	if (wanted > nthreads)	906	/* you have to re-run ./gendef0 after adding/removing any constants here */
503	wanted = nthreads;	907	/* the first block can be undef if missing */
		908	const_iv (ENOSYS)
		909	const_iv (EXDEV)
		910	const_iv (EBADR)
504		911
505	while (cur > wanted)	912	/* for lseek */
506	{	913	const_iv (SEEK_DATA)
507	end_thread ();	914	const_iv (SEEK_HOLE)
508	cur--;
509	}
510		915
511	while (started > wanted)	916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
512	{	917	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
513	poll_wait ();	918	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
514	poll_cb ();	919	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
515	}	920	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
516	}	921	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
517		922
518	static void create_pipe ()	923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
519	{	924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
520	if (pipe (respipe))	925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
521	croak ("unable to initialize result pipe");	926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
522		928
523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	929	/* the second block will be 0 when missing */
524	croak ("cannot set result pipe to nonblocking mode");	930	const_iv (O_RDONLY)
		931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
525		937
526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	938	const_iv (O_ASYNC)
527	croak ("cannot set result pipe to nonblocking mode");	939	const_iv (O_DIRECT)
528	}	940	const_iv (O_NOATIME)
529		941
530	/*****************************************************************************/	942	const_iv (O_CLOEXEC)
531	/* work around various missing functions */	943	const_iv (O_NOCTTY)
		944	const_iv (O_NOFOLLOW)
		945	const_iv (O_NONBLOCK)
		946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_PATH)
		953	const_iv (O_TMPFILE)
		954	const_iv (O_TTY_INIT)
532		955
533	#if !HAVE_PREADWRITE	956	const_iv (S_IFIFO)
534	# define pread aio_pread	957	const_iv (S_IFCHR)
535	# define pwrite aio_pwrite	958	const_iv (S_IFBLK)
		959	const_iv (S_IFLNK)
		960	const_iv (S_IFREG)
		961	const_iv (S_IFDIR)
		962	const_iv (S_IFWHT)
		963	const_iv (S_IFSOCK)
		964	const_iv (S_IFMT)
536		965
537	/*	966	const_iv (ST_RDONLY)
538	* make our pread/pwrite safe against themselves, but not against	967	const_iv (ST_NOSUID)
539	* normal read/write by using a mutex. slows down execution a lot,	968	const_iv (ST_NODEV)
540	* but that's your problem, not mine.	969	const_iv (ST_NOEXEC)
541	*/	970	const_iv (ST_SYNCHRONOUS)
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	971	const_iv (ST_MANDLOCK)
		972	const_iv (ST_WRITE)
		973	const_iv (ST_APPEND)
		974	const_iv (ST_IMMUTABLE)
		975	const_iv (ST_NOATIME)
		976	const_iv (ST_NODIRATIME)
		977	const_iv (ST_RELATIME)
543		978
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	979	const_iv (PROT_NONE)
545	{	980	const_iv (PROT_EXEC)
546	ssize_t res;	981	const_iv (PROT_READ)
547	off_t ooffset;	982	const_iv (PROT_WRITE)
548		983
549	pthread_mutex_lock (&preadwritelock);	984	const_iv (MAP_PRIVATE)
550	ooffset = lseek (fd, 0, SEEK_CUR);	985	const_iv (MAP_SHARED)
551	lseek (fd, offset, SEEK_SET);	986	const_iv (MAP_FIXED)
552	res = read (fd, buf, count);	987	const_iv (MAP_ANONYMOUS)
553	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);
555		988
556	return res;	989	/* linuxish */
557	}	990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994	const_iv (MAP_GROWSDOWN)
		995	const_iv (MAP_32BIT)
		996	const_iv (MAP_HUGETLB)
		997	const_iv (MAP_STACK)
558		998
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	999	const_iv (FIEMAP_FLAG_SYNC)
560	{	1000	const_iv (FIEMAP_FLAG_XATTR)
561	ssize_t res;	1001	const_iv (FIEMAP_FLAGS_COMPAT)
562	off_t ooffset;	1002	const_iv (FIEMAP_EXTENT_LAST)
		1003	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1004	const_iv (FIEMAP_EXTENT_DELALLOC)
		1005	const_iv (FIEMAP_EXTENT_ENCODED)
		1006	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1007	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1008	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1009	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1010	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1011	const_iv (FIEMAP_EXTENT_MERGED)
		1012	const_iv (FIEMAP_EXTENT_SHARED)
563		1013
564	pthread_mutex_lock (&preadwritelock);	1014	const_iv (SPLICE_F_MOVE)
565	ooffset = lseek (fd, 0, SEEK_CUR);	1015	const_iv (SPLICE_F_NONBLOCK)
566	lseek (fd, offset, SEEK_SET);	1016	const_iv (SPLICE_F_MORE)
567	res = write (fd, buf, count);	1017	const_iv (SPLICE_F_GIFT)
568	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570		1018
571	return res;	1019	/* these are libeio constants, and are independent of gendef0 */
572	}	1020	const_eio (SEEK_SET)
573	#endif	1021	const_eio (SEEK_CUR)
		1022	const_eio (SEEK_END)
574		1023
575	#if !HAVE_FDATASYNC	1024	const_eio (MCL_FUTURE)
576	# define fdatasync fsync	1025	const_eio (MCL_CURRENT)
577	#endif
578		1026
579	#if !HAVE_READAHEAD	1027	const_eio (MS_ASYNC)
580	# define readahead aio_readahead	1028	const_eio (MS_INVALIDATE)
		1029	const_eio (MS_SYNC)
581		1030
582	static ssize_t readahead (int fd, off_t offset, size_t count)	1031	const_eio (MT_MODIFY)
583	{
584	char readahead_buf[4096];
585		1032
586	while (count > 0)	1033	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
587	{	1034	const_eio (SYNC_FILE_RANGE_WRITE)
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	1035	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
589		1036
590	pread (fd, readahead_buf, len, offset);	1037	const_eio (FALLOC_FL_KEEP_SIZE)
591	offset += len;	1038	const_eio (FALLOC_FL_PUNCH_HOLE)
592	count -= len;	1039	const_eio (FALLOC_FL_COLLAPSE_RANGE)
593	}	1040	const_eio (FALLOC_FL_ZERO_RANGE)
594		1041
595	errno = 0;	1042	const_eio (READDIR_DENTS)
596	}	1043	const_eio (READDIR_DIRS_FIRST)
597	#endif	1044	const_eio (READDIR_STAT_ORDER)
		1045	const_eio (READDIR_FOUND_UNKNOWN)
598		1046
599	#if !HAVE_READDIR_R	1047	const_eio (DT_UNKNOWN)
600	# define readdir_r aio_readdir_r	1048	const_eio (DT_FIFO)
601		1049	const_eio (DT_CHR)
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1050	const_eio (DT_DIR)
603		1051	const_eio (DT_BLK)
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1052	const_eio (DT_REG)
605	{	1053	const_eio (DT_LNK)
606	struct dirent *e;	1054	const_eio (DT_SOCK)
607	int errorno;	1055	const_eio (DT_WHT)
608
609	pthread_mutex_lock (&readdirlock);
610
611	e = readdir (dirp);
612	errorno = errno;
613
614	if (e)
615	{
616	*res = ent;
617	strcpy (ent->d_name, e->d_name);
618	}
619	else
620	*res = 0;
621
622	pthread_mutex_unlock (&readdirlock);
623
624	errno = errorno;
625	return e ? 0 : -1;
626	}
627	#endif
628
629	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
631	{
632	ssize_t res;
633
634	if (!count)
635	return 0;
636
637	#if HAVE_SENDFILE
638	# if __linux
639	res = sendfile (ofd, ifd, &offset, count);
640
641	# elif __freebsd
642	/*
643	* Of course, the freebsd sendfile is a dire hack with no thoughts
644	* wasted on making it similar to other I/O functions.
645	*/
646	{
647	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649
650	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
652	res = sbytes;
653	}	1056	};
654		1057
655	# elif __hpux	1058	aio_stash = gv_stashpv ("IO::AIO" , 1);
656	res = sendfile (ofd, ifd, offset, count, 0, 0);	1059	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1060	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1061	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
657		1062
658	# elif __solaris	1063	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
659	{	1064	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
660	struct sendfilevec vec;
661	size_t sbytes;
662		1065
663	vec.sfv_fd = ifd;	1066	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
664	vec.sfv_flag = 0;
665	vec.sfv_off = offset;
666	vec.sfv_len = count;
667		1067
668	res = sendfilev (ofd, &vec, 1, &sbytes);	1068	reinit ();
		1069	}
669		1070
670	if (res < 0 && sbytes)	1071	void
		1072	reinit ()
		1073	PROTOTYPE:
		1074
		1075	void
		1076	max_poll_reqs (unsigned int nreqs)
		1077	PROTOTYPE: $
		1078	CODE:
		1079	eio_set_max_poll_reqs (nreqs);
		1080
		1081	void
		1082	max_poll_time (double nseconds)
		1083	PROTOTYPE: $
		1084	CODE:
		1085	eio_set_max_poll_time (nseconds);
		1086
		1087	void
		1088	min_parallel (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_min_parallel (nthreads);
		1092
		1093	void
		1094	max_parallel (unsigned int nthreads)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_max_parallel (nthreads);
		1098
		1099	void
		1100	max_idle (unsigned int nthreads)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	eio_set_max_idle (nthreads);
		1104
		1105	void
		1106	idle_timeout (unsigned int seconds)
		1107	PROTOTYPE: $
		1108	CODE:
		1109	eio_set_idle_timeout (seconds);
		1110
		1111	void
		1112	max_outstanding (unsigned int maxreqs)
		1113	PROTOTYPE: $
		1114	CODE:
		1115	max_outstanding = maxreqs;
		1116
		1117	void
		1118	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
		1123	req->type = EIO_WD_OPEN;
		1124	req_set_path1 (req, pathname);
		1125
		1126	REQ_SEND;
		1127	}
		1128
		1129	void
		1130	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1131	PPCODE:
		1132	{
		1133	dREQ;
		1134
		1135	req->type = EIO_OPEN;
		1136	req_set_path1 (req, pathname);
		1137	req->int1 = flags;
		1138	req->int2 = mode;
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1145	ALIAS:
		1146	aio_fsync = EIO_FSYNC
		1147	aio_fdatasync = EIO_FDATASYNC
		1148	aio_syncfs = EIO_SYNCFS
		1149	PPCODE:
		1150	{
		1151	int fd = s_fileno_croak (fh, 0);
		1152	dREQ;
		1153
		1154	req->type = ix;
		1155	req->sv1 = newSVsv (fh);
		1156	req->int1 = fd;
		1157
		1158	REQ_SEND;
		1159	}
		1160
		1161	void
		1162	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1163	PPCODE:
		1164	{
		1165	int fd = s_fileno_croak (fh, 0);
		1166	dREQ;
		1167
		1168	req->type = EIO_SYNC_FILE_RANGE;
		1169	req->sv1 = newSVsv (fh);
		1170	req->int1 = fd;
		1171	req->offs = offset;
671	res = sbytes;	1172	req->size = nbytes;
672	}	1173	req->int2 = flags;
673		1174
674	# endif	1175	REQ_SEND;
		1176	}
		1177
		1178	void
		1179	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1180	PPCODE:
		1181	{
		1182	int fd = s_fileno_croak (fh, 0);
		1183	dREQ;
		1184
		1185	req->type = EIO_FALLOCATE;
		1186	req->sv1 = newSVsv (fh);
		1187	req->int1 = fd;
		1188	req->int2 = mode;
		1189	req->offs = offset;
		1190	req->size = len;
		1191
		1192	REQ_SEND;
		1193	}
		1194
		1195	void
		1196	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1197	PPCODE:
		1198	{
		1199	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1200	int fd = s_fileno_croak (fh, 0);
		1201	dREQ;
		1202
		1203	if (expect_false (close_fd < 0))
		1204	{
		1205	int pipefd [2];
		1206
		1207	if (
		1208	#ifdef _WIN32
		1209	_pipe (pipefd, 1, _O_BINARY) < 0
675	#else	1210	#else
676	res = -1;	1211	pipe (pipefd) < 0
677	errno = ENOSYS;	1212	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
678	#endif	1213	#endif
679		1214	|| close (pipefd [1]) < 0
680	if (res < 0
681	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
682	#if __solaris
683	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
684	#endif
685	)
686	)
687	{
688	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];
690	res = 0;
691
692	while (count)
693	{
694	ssize_t cnt;
695
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
697
698	if (cnt <= 0)
699	{	1215	)
700	if (cnt && !res) res = -1;	1216	abort (); /*D*/
701	break;
702	}
703		1217
704	cnt = write (ofd, buf, cnt);	1218	close_fd = pipefd [0];
705
706	if (cnt <= 0)
707	{
708	if (cnt && !res) res = -1;
709	break;
710	}
711
712	offset += cnt;
713	res += cnt;
714	count -= cnt;
715	}
716	}
717
718	return res;
719	}
720
721	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)
723	{
724	DIR *dirp = opendir (path);
725	union
726	{
727	struct dirent d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
729	} u;
730	struct dirent *entp;
731	char *name, *names;
732	int memlen = 4096;
733	int memofs = 0;
734	int res = 0;
735	int errorno;
736
737	if (!dirp)
738	return -1;
739
740	names = malloc (memlen);
741
742	for (;;)
743	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);
745
746	if (!entp)
747	break;
748
749	name = entp->d_name;
750
751	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752	{
753	int len = strlen (name) + 1;
754
755	res++;
756
757	while (memofs + len > memlen)
758	{
759	memlen *= 2;
760	names = realloc (names, memlen);
761	if (!names)
762	break;
763	}
764
765	memcpy (names + memofs, name, len);
766	memofs += len;
767	}
768	}
769
770	errorno = errno;
771	closedir (dirp);
772
773	if (errorno)
774	{
775	free (names);
776	errno = errorno;
777	res = -1;
778	}
779
780	*namesp = (void *)names;
781	return res;
782	}
783
784	/*****************************************************************************/
785
786	static void *aio_proc (void *thr_arg)
787	{
788	aio_req req;
789	int type;
790
791	do
792	{
793	pthread_mutex_lock (&reqlock);
794
795	for (;;)
796	{
797	req = reqs;
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804
805	if (req)
806	break;
807
808	pthread_cond_wait (&reqwait, &reqlock);
809	}
810
811	pthread_mutex_unlock (&reqlock);
812
813	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815
816	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)
818	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
821
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
823	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
824
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
826	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
827	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
828
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
836
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
840
841	case REQ_SLEEP:
842	{
843	struct timeval tv;
844
845	tv.tv_sec = req->fd;
846	tv.tv_usec = req->fd2;
847
848	req->result = select (0, 0, 0, 0, &tv);
849	}
850
851	case REQ_GROUP:
852	case REQ_NOP:
853	case REQ_QUIT:
854	break;
855
856	default:
857	req->result = ENOSYS;
858	break;
859	}	1219	}
860		1220
861	req->errorno = errno;	1221	req->type = EIO_DUP2;
862		1222	req->int1 = close_fd;
863	pthread_mutex_lock (&reslock);	1223	req->sv2 = newSVsv (fh);
864
865	req->next = 0;	1224	req->int2 = fd;
866		1225
867	if (rese)	1226	REQ_SEND;
868	{
869	rese->next = req;
870	rese = req;
871	}
872	else
873	{
874	rese = ress = req;
875
876	/* write a dummy byte to the pipe so fh becomes ready */
877	write (respipe [1], &respipe, 1);
878	}
879
880	pthread_mutex_unlock (&reslock);
881	}
882	while (type != REQ_QUIT);
883
884	return 0;
885	}	1227	}
886		1228
887	/*****************************************************************************/
888
889	static void atfork_prepare (void)
890	{
891	pthread_mutex_lock (&reqlock);
892	pthread_mutex_lock (&reslock);
893	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);
895	#endif
896	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);
898	#endif
899	}
900
901	static void atfork_parent (void)
902	{
903	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);
905	#endif
906	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);
908	#endif
909	pthread_mutex_unlock (&reslock);
910	pthread_mutex_unlock (&reqlock);
911	}
912
913	static void atfork_child (void)
914	{
915	aio_req prv;
916
917	started = 0;
918
919	while (reqs)
920	{
921	prv = reqs;
922	reqs = prv->next;
923	req_free (prv);
924	}
925
926	reqs = reqe = 0;
927
928	while (ress)
929	{
930	prv = ress;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936
937	close (respipe [0]);
938	close (respipe [1]);
939	create_pipe ();
940
941	atfork_parent ();
942	}
943
944	#define dREQ \
945	aio_req req; \
946	int req_pri = next_pri; \
947	next_pri = DEFAULT_PRI + PRI_BIAS; \
948	\
949	if (SvOK (callback) && !SvROK (callback)) \
950	croak ("callback must be undef or of reference type"); \
951	\
952	Newz (0, req, 1, aio_cb); \
953	if (!req) \
954	croak ("out of memory during aio_req allocation"); \
955	\
956	req->callback = newSVsv (callback); \
957	req->pri = req_pri
958
959	#define REQ_SEND \
960	req_send (req); \
961	\
962	if (GIMME_V != G_VOID) \
963	XPUSHs (req_sv (req, AIO_REQ_KLASS));
964
965	MODULE = IO::AIO PACKAGE = IO::AIO
966
967	PROTOTYPES: ENABLE
968
969	BOOT:
970	{
971	HV *stash = gv_stashpv ("IO::AIO", 1);
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
975
976	create_pipe ();
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
978	}
979
980	void	1229	void
981	min_parallel (nthreads)	1230	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
982	int nthreads
983	PROTOTYPE: $
984
985	void
986	max_parallel (nthreads)
987	int nthreads
988	PROTOTYPE: $
989
990	int
991	max_outstanding (nreqs)
992	int nreqs
993	PROTOTYPE: $
994	CODE:	1231	PPCODE:
995	RETVAL = max_outstanding;
996	max_outstanding = nreqs;
997
998	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1000	SV * pathname
1001	int flags
1002	int mode
1003	SV * callback
1004	PROTOTYPE: $$$;$
1005	PPCODE:
1006	{	1232	{
		1233	int fd = s_fileno_croak (fh, 0);
1007	dREQ;	1234	dREQ;
1008		1235
1009	req->type = REQ_OPEN;	1236	req->type = EIO_SEEK;
1010	req->data = newSVsv (pathname);	1237	req->sv1 = newSVsv (fh);
1011	req->dataptr = SvPVbyte_nolen (req->data);	1238	req->int1 = fd;
1012	req->fd = flags;	1239	req->offs = SvVAL64 (offset);
1013	req->mode = mode;	1240	req->int2 = whence;
1014		1241
1015	REQ_SEND;	1242	REQ_SEND;
1016	}	1243	}
1017		1244
1018	void	1245	void
1019	aio_close (fh,callback=&PL_sv_undef)	1246	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$
1023	ALIAS:	1247	ALIAS:
1024	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC
1027	PPCODE:
1028	{
1029	dREQ;
1030
1031	req->type = ix;
1032	req->fh = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034
1035	REQ_SEND (req);
1036	}
1037
1038	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1040	SV * fh
1041	UV offset
1042	UV length
1043	SV * data
1044	UV dataoffset
1045	SV * callback
1046	ALIAS:
1047	aio_read = REQ_READ	1248	aio_read = EIO_READ
1048	aio_write = REQ_WRITE	1249	aio_write = EIO_WRITE
1049	PROTOTYPE: $$$$$;$
1050	PPCODE:	1250	PPCODE:
1051	{	1251	{
1052	aio_req req;
1053	STRLEN svlen;	1252	STRLEN svlen;
		1253	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1054	char *svptr = SvPVbyte (data, svlen);	1254	char *svptr = SvPVbyte (data, svlen);
1055		1255	UV len = SvUV (length);
1056	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);
1058		1256
1059	if (dataoffset < 0)	1257	if (dataoffset < 0)
1060	dataoffset += svlen;	1258	dataoffset += svlen;
1061		1259
1062	if (dataoffset < 0 || dataoffset > svlen)	1260	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	1261	croak ("dataoffset outside of data scalar");
1064		1262
1065	if (ix == REQ_WRITE)	1263	if (ix == EIO_WRITE)
1066	{	1264	{
1067	/* write: check length and adjust. */	1265	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	1266	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	1267	len = svlen - dataoffset;
1070	}	1268	}
1071	else	1269	else
1072	{	1270	{
1073	/* read: grow scalar as necessary */	1271	/* read: check type and grow scalar as necessary */
		1272	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1074	svptr = SvGROW (data, length + dataoffset);	1273	svptr = sv_grow (data, len + dataoffset + 1);
		1274	else if (SvCUR (data) < len + dataoffset)
		1275	croak ("length + dataoffset outside of scalar, and cannot grow");
1075	}	1276	}
1076
1077	if (length < 0)
1078	croak ("length must not be negative");
1079		1277
1080	{	1278	{
1081	dREQ;	1279	dREQ;
1082		1280
1083	req->type = ix;	1281	req->type = ix;
1084	req->fh = newSVsv (fh);	1282	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1283	req->int1 = fd;
1086	: IoOFP (sv_2io (fh)));	1284	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	1285	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	1286	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	1287	req->ptr2 = (char *)svptr + dataoffset;
		1288	req->stroffset = dataoffset;
1091		1289
1092	if (!SvREADONLY (data))	1290	if (!SvREADONLY (data))
1093	{	1291	{
1094	SvREADONLY_on (data);	1292	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	1293	req->flags |= FLAG_SV2_RO_OFF;
1096	}	1294	}
1097		1295
1098	REQ_SEND;	1296	REQ_SEND;
1099	}	1297	}
1100	}	1298	}
1101		1299
1102	void	1300	void
1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1301	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1104	SV * out_fh	1302	ALIAS:
1105	SV * in_fh	1303	aio_readlink = EIO_READLINK
1106	UV in_offset	1304	aio_realpath = EIO_REALPATH
1107	UV length
1108	SV * callback
1109	PROTOTYPE: $$$$;$
1110	PPCODE:	1305	PPCODE:
1111	{	1306	{
		1307	dREQ;
		1308
		1309	req->type = ix;
		1310	req_set_path1 (req, pathname);
		1311
		1312	REQ_SEND;
		1313	}
		1314
		1315	void
		1316	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1317	PPCODE:
		1318	{
		1319	int ifd = s_fileno_croak (in_fh , 0);
		1320	int ofd = s_fileno_croak (out_fh, 1);
1112	dREQ;	1321	dREQ;
1113		1322
1114	req->type = REQ_SENDFILE;	1323	req->type = EIO_SENDFILE;
1115	req->fh = newSVsv (out_fh);	1324	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1325	req->int1 = ofd;
1117	req->fh2 = newSVsv (in_fh);	1326	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1327	req->int2 = ifd;
1119	req->offset = in_offset;	1328	req->offs = in_offset;
1120	req->length = length;	1329	req->size = length;
1121		1330
1122	REQ_SEND;	1331	REQ_SEND;
1123	}	1332	}
1124		1333
1125	void	1334	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1335	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$
1132	PPCODE:	1336	PPCODE:
1133	{	1337	{
		1338	int fd = s_fileno_croak (fh, 0);
1134	dREQ;	1339	dREQ;
1135		1340
1136	req->type = REQ_READAHEAD;	1341	req->type = EIO_READAHEAD;
1137	req->fh = newSVsv (fh);	1342	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1343	req->int1 = fd;
1139	req->offset = offset;	1344	req->offs = offset;
1140	req->length = length;	1345	req->size = length;
1141		1346
1142	REQ_SEND;	1347	REQ_SEND;
1143	}	1348	}
1144		1349
1145	void	1350	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	1351	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	1352	ALIAS:
1150	aio_stat = REQ_STAT	1353	aio_stat = EIO_STAT
1151	aio_lstat = REQ_LSTAT	1354	aio_lstat = EIO_LSTAT
		1355	aio_statvfs = EIO_STATVFS
1152	PPCODE:	1356	PPCODE:
1153	{	1357	{
1154	dREQ;	1358	dREQ;
1155		1359
1156	New (0, req->statdata, 1, Stat_t);	1360	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1157	if (!req->statdata)
1158	{
1159	req_free (req);
1160	croak ("out of memory during aio_req->statdata allocation");
1161	}
1162
1163	if (SvPOK (fh_or_path))
1164	{
1165	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);
1168	}
1169	else
1170	{
1171	req->type = REQ_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}
1175		1361
1176	REQ_SEND;	1362	REQ_SEND;
1177	}	1363	}
1178		1364
		1365	UV
		1366	major (UV dev)
		1367	ALIAS:
		1368	minor = 1
		1369	CODE:
		1370	RETVAL = ix ? major (dev) : minor (dev);
		1371	OUTPUT:
		1372	RETVAL
		1373
		1374	UV
		1375	makedev (UV maj, UV min)
		1376	CODE:
		1377	RETVAL = makedev (maj, min);
		1378	OUTPUT:
		1379	RETVAL
		1380
1179	void	1381	void
		1382	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1388	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1389	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1390
		1391	REQ_SEND;
		1392	}
		1393
		1394	void
		1395	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399
		1400	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1401	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
		1407	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1408	PPCODE:
		1409	{
		1410	dREQ;
		1411
		1412	req->int2 = mode;
		1413	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	dREQ;
		1423
		1424	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1425	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1426	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1427
		1428	REQ_SEND;
		1429	}
		1430
		1431	void
		1432	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_READDIR;
		1438	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1439
		1440	if (flags & EIO_READDIR_DENTS)
		1441	req->int1 |= EIO_READDIR_CUSTOM2;
		1442
		1443	req_set_path1 (req, pathname);
		1444
		1445	REQ_SEND;
		1446	}
		1447
		1448	void
		1449	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1450	PPCODE:
		1451	{
		1452	dREQ;
		1453
		1454	req->type = EIO_MKDIR;
		1455	req->int2 = mode;
		1456	req_set_path1 (req, pathname);
		1457
		1458	REQ_SEND;
		1459	}
		1460
		1461	void
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1462	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1463	ALIAS:
1184	aio_unlink = REQ_UNLINK	1464	aio_unlink = EIO_UNLINK
1185	aio_rmdir = REQ_RMDIR	1465	aio_rmdir = EIO_RMDIR
1186	aio_readdir = REQ_READDIR	1466	aio_readdir = EIO_READDIR
1187	PPCODE:	1467	PPCODE:
1188	{	1468	{
1189	dREQ;	1469	dREQ;
1190		1470
1191	req->type = ix;	1471	req->type = ix;
1192	req->data = newSVsv (pathname);	1472	req_set_path1 (req, pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1473
1194
1195	REQ_SEND;	1474	REQ_SEND;
1196	}	1475	}
1197		1476
1198	void	1477	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1478	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1479	ALIAS:
1204	aio_link = REQ_LINK	1480	aio_link = EIO_LINK
1205	aio_symlink = REQ_SYMLINK	1481	aio_symlink = EIO_SYMLINK
1206	aio_rename = REQ_RENAME	1482	aio_rename = EIO_RENAME
1207	PPCODE:	1483	PPCODE:
1208	{	1484	{
		1485	eio_wd wd2 = 0;
1209	dREQ;	1486	dREQ;
1210		1487
1211	req->type = ix;	1488	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1489	req_set_path1 (req, oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1490	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1214	req->data = newSVsv (newpath);	1491	req->int3 = (long)wd2;
1215	req->dataptr = SvPVbyte_nolen (req->data);
1216		1492
1217	REQ_SEND;	1493	REQ_SEND;
1218	}	1494	}
1219		1495
1220	void	1496	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1497	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1498	PPCODE:
1225	{	1499	{
1226	dREQ;	1500	dREQ;
1227		1501
1228	req->type = REQ_SLEEP;	1502	req->type = EIO_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1503	req->int2 = (mode_t)mode;
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1504	req->offs = dev;
1231		1505	req_set_path1 (req, pathname);
		1506
1232	REQ_SEND;	1507	REQ_SEND;
1233	}	1508	}
1234		1509
1235	void	1510	void
1236	aio_group (callback=&PL_sv_undef)	1511	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1237	SV * callback	1512	ALIAS:
1238	PROTOTYPE: ;$	1513	aio_mtouch = EIO_MTOUCH
		1514	aio_msync = EIO_MSYNC
1239	PPCODE:	1515	PPCODE:
1240	{	1516	{
		1517	STRLEN svlen;
		1518	char *svptr = SvPVbyte (data, svlen);
		1519	UV len = SvUV (length);
		1520
		1521	if (offset < 0)
		1522	offset += svlen;
		1523
		1524	if (offset < 0 || offset > svlen)
		1525	croak ("offset outside of scalar");
		1526
		1527	if (!SvOK (length) || len + offset > svlen)
		1528	len = svlen - offset;
		1529
		1530	{
		1531	dREQ;
		1532
		1533	req->type = ix;
		1534	req->sv2 = SvREFCNT_inc (data);
		1535	req->ptr2 = (char *)svptr + offset;
		1536	req->size = len;
		1537	req->int1 = flags;
		1538
		1539	REQ_SEND;
		1540	}
		1541	}
		1542
		1543	void
		1544	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1545	PPCODE:
		1546	{
		1547	STRLEN svlen;
		1548	char *svptr = SvPVbyte (data, svlen);
		1549	UV len = SvUV (length);
		1550
		1551	if (offset < 0)
		1552	offset += svlen;
		1553
		1554	if (offset < 0 || offset > svlen)
		1555	croak ("offset outside of scalar");
		1556
		1557	if (!SvOK (length) || len + offset > svlen)
		1558	len = svlen - offset;
		1559
		1560	{
		1561	dREQ;
		1562
		1563	req->type = EIO_MLOCK;
		1564	req->sv2 = SvREFCNT_inc (data);
		1565	req->ptr2 = (char *)svptr + offset;
		1566	req->size = len;
		1567
		1568	REQ_SEND;
		1569	}
		1570	}
		1571
		1572	void
		1573	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1574	PPCODE:
		1575	{
		1576	dREQ;
		1577
		1578	req->type = EIO_MLOCKALL;
		1579	req->int1 = flags;
		1580
		1581	REQ_SEND;
		1582	}
		1583
		1584	void
		1585	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1586	PPCODE:
		1587	{
		1588	int fd = s_fileno_croak (fh, 0);
1241	dREQ;	1589	dREQ;
1242		1590
1243	req->type = REQ_GROUP;	1591	req->type = EIO_CUSTOM;
1244	req_send (req);	1592	req->sv1 = newSVsv (fh);
		1593	req->int1 = fd;
1245		1594
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1595	req->feed = fiemap;
1247	}	1596	#if HAVE_FIEMAP
		1597	/* keep our fingers crossed that the next two types are 64 bit */
		1598	req->offs = start;
		1599	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1600	req->int2 = flags;
		1601	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1602	#endif
1248		1603
		1604	REQ_SEND;
		1605	}
		1606
1249	void	1607	void
1250	aio_nop (callback=&PL_sv_undef)	1608	aio_busy (double delay, SV *callback = &PL_sv_undef)
1251	SV * callback
1252	PPCODE:	1609	PPCODE:
1253	{	1610	{
1254	dREQ;	1611	dREQ;
1255		1612
1256	req->type = REQ_NOP;	1613	req->type = EIO_BUSY;
		1614	req->nv1 = delay < 0. ? 0. : delay;
1257		1615
1258	REQ_SEND;	1616	REQ_SEND;
1259	}	1617	}
1260		1618
1261	#if 0
1262
1263	void	1619	void
1264	aio_pri (int pri = DEFAULT_PRI)	1620	aio_group (SV *callback = &PL_sv_undef)
		1621	PPCODE:
		1622	{
		1623	dREQ;
		1624
		1625	req->type = EIO_GROUP;
		1626
		1627	PUTBACK;
		1628	req_submit (req);
		1629	SPAGAIN;
		1630
		1631	XPUSHs (req_sv (req, aio_grp_stash));
		1632	}
		1633
		1634	void
		1635	aio_nop (SV *callback = &PL_sv_undef)
		1636	ALIAS:
		1637	aio_nop = EIO_NOP
		1638	aio_sync = EIO_SYNC
		1639	PPCODE:
		1640	{
		1641	dREQ;
		1642
		1643	req->type = ix;
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	int
		1649	aioreq_pri (int pri = NO_INIT)
1265	CODE:	1650	CODE:
		1651	RETVAL = next_pri;
		1652	if (items > 0)
		1653	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1654	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1655	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1656	next_pri = pri;
		1657	}
		1658	OUTPUT:
		1659	RETVAL
1269		1660
1270	#endif	1661	void
		1662	aioreq_nice (int nice = 0)
		1663	CODE:
		1664	nice = next_pri - nice;
		1665	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1666	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1667	next_pri = nice;
1271		1668
1272	void	1669	void
1273	flush ()	1670	flush ()
1274	PROTOTYPE:
1275	CODE:	1671	CODE:
1276	while (nreqs)	1672	while (eio_nreqs ())
1277	{	1673	{
1278	poll_wait ();	1674	poll_wait ();
1279	poll_cb ();	1675	poll_cb ();
1280	}	1676	}
1281		1677
1282	void	1678	int
1283	poll()	1679	poll ()
1284	PROTOTYPE:
1285	CODE:	1680	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1681	poll_wait ();
1289	poll_cb ();	1682	RETVAL = poll_cb ();
1290	}
1291
1292	int
1293	poll_fileno()
1294	PROTOTYPE:
1295	CODE:
1296	RETVAL = respipe [0];
1297	OUTPUT:	1683	OUTPUT:
1298	RETVAL	1684	RETVAL
1299		1685
1300	int	1686	int
		1687	poll_fileno ()
		1688	CODE:
		1689	RETVAL = s_epipe_fd (&respipe);
		1690	OUTPUT:
		1691	RETVAL
		1692
		1693	int
1301	poll_cb(...)	1694	poll_cb (...)
1302	PROTOTYPE:	1695	PROTOTYPE:
1303	CODE:	1696	CODE:
1304	RETVAL = poll_cb ();	1697	RETVAL = poll_cb ();
1305	OUTPUT:	1698	OUTPUT:
1306	RETVAL	1699	RETVAL
1307		1700
1308	void	1701	void
1309	poll_wait()	1702	poll_wait ()
1310	PROTOTYPE:
1311	CODE:	1703	CODE:
1312	if (nreqs)
1313	poll_wait ();	1704	poll_wait ();
1314		1705
1315	int	1706	int
1316	nreqs()	1707	nreqs ()
1317	PROTOTYPE:
1318	CODE:	1708	CODE:
1319	RETVAL = nreqs;	1709	RETVAL = eio_nreqs ();
1320	OUTPUT:	1710	OUTPUT:
1321	RETVAL	1711	RETVAL
1322		1712
		1713	int
		1714	nready ()
		1715	CODE:
		1716	RETVAL = eio_nready ();
		1717	OUTPUT:
		1718	RETVAL
		1719
		1720	int
		1721	npending ()
		1722	CODE:
		1723	RETVAL = eio_npending ();
		1724	OUTPUT:
		1725	RETVAL
		1726
		1727	int
		1728	nthreads ()
		1729	CODE:
		1730	RETVAL = eio_nthreads ();
		1731	OUTPUT:
		1732	RETVAL
		1733
		1734	int
		1735	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1736	CODE:
		1737	RETVAL = posix_fadvise (fh, offset, length, advice);
		1738	OUTPUT:
		1739	RETVAL
		1740
		1741	IV
		1742	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1743	CODE:
		1744	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1745	OUTPUT:
		1746	RETVAL
		1747
		1748	void
		1749	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1750	PPCODE:
		1751	sv_unmagic (scalar, MMAP_MAGIC);
		1752	{
		1753	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1754	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1755	if (addr == (void *)-1)
		1756	XSRETURN_NO;
		1757
		1758	sv_force_normal (scalar);
		1759
		1760	/* we store the length in mg_obj, as namlen is I32 :/ */
		1761	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1762	->mg_obj = (SV *)length;
		1763
		1764	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1765
		1766	if (!(prot & PROT_WRITE))
		1767	SvREADONLY_on (scalar);
		1768
		1769	if (SvLEN (scalar))
		1770	Safefree (SvPVX (scalar));
		1771
		1772	SvPVX (scalar) = (char *)addr;
		1773	SvCUR_set (scalar, length);
		1774	SvLEN_set (scalar, 0);
		1775	SvPOK_only (scalar);
		1776
		1777	XSRETURN_YES;
		1778	}
		1779
		1780	void
		1781	munmap (SV *scalar)
		1782	CODE:
		1783	sv_unmagic (scalar, MMAP_MAGIC);
		1784
		1785	int
		1786	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1787	ALIAS:
		1788	mprotect = 1
		1789	CODE:
		1790	{
		1791	STRLEN svlen;
		1792	void *addr = SvPVbyte (scalar, svlen);
		1793	STRLEN len = SvUV (length);
		1794
		1795	if (offset < 0)
		1796	offset += svlen;
		1797
		1798	if (offset < 0 || offset > svlen)
		1799	croak ("offset outside of scalar");
		1800
		1801	if (!SvOK (length) || len + offset > svlen)
		1802	len = svlen - offset;
		1803
		1804	addr = (void *)(((intptr_t)addr) + offset);
		1805	eio_page_align (&addr, &len);
		1806
		1807	switch (ix)
		1808	{
		1809	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1810	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1811	}
		1812	}
		1813	OUTPUT:
		1814	RETVAL
		1815
		1816	int
		1817	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1818	CODE:
		1819	{
		1820	STRLEN svlen;
		1821	void *addr = SvPVbyte (scalar, svlen);
		1822	size_t len = SvUV (length);
		1823
		1824	if (offset < 0)
		1825	offset += svlen;
		1826
		1827	if (offset < 0 || offset > svlen)
		1828	croak ("offset outside of scalar");
		1829
		1830	if (!SvOK (length) || len + offset > svlen)
		1831	len = svlen - offset;
		1832
		1833	addr = (void *)(((intptr_t)addr) + offset);
		1834	eio_page_align (&addr, &len);
		1835	#if _POSIX_MEMLOCK_RANGE
		1836	RETVAL = munlock (addr, len);
		1837	#else
		1838	RETVAL = EIO_ENOSYS ();
		1839	#endif
		1840	}
		1841	OUTPUT:
		1842	RETVAL
		1843
		1844	int
		1845	munlockall ()
		1846	CODE:
		1847	#if _POSIX_MEMLOCK
		1848	munlockall ();
		1849	#else
		1850	RETVAL = EIO_ENOSYS ();
		1851	#endif
		1852	OUTPUT:
		1853	RETVAL
		1854
		1855	int
		1856	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1857	CODE:
		1858	{
		1859	#if HAVE_LINUX_SPLICE
		1860	loff_t off_in_, off_out_;
		1861	RETVAL = splice (
		1862	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1863	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1864	length, flags
		1865	);
		1866	#else
		1867	RETVAL = EIO_ENOSYS ();
		1868	#endif
		1869	}
		1870	OUTPUT:
		1871	RETVAL
		1872
		1873	int
		1874	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1875	CODE:
		1876	#if HAVE_LINUX_SPLICE
		1877	RETVAL = tee (rfh, wfh, length, flags);
		1878	#else
		1879	RETVAL = EIO_ENOSYS ();
		1880	#endif
		1881	OUTPUT:
		1882	RETVAL
		1883
		1884	int
		1885	pipesize (aio_rfd rfh, int new_size = -1)
		1886	PROTOTYPE: $;$
		1887	CODE:
		1888	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1889	if (new_size >= 0)
		1890	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1891	else
		1892	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1893	#else
		1894	errno = ENOSYS;
		1895	RETVAL = -1;
		1896	#endif
		1897	OUTPUT:
		1898	RETVAL
		1899
		1900	void
		1901	pipe2 (int flags = 0)
		1902	PROTOTYPE: ;$
		1903	PPCODE:
		1904	{
		1905	int fd[2];
		1906	int res;
		1907
		1908	if (flags)
		1909	#if HAVE_PIPE2
		1910	res = pipe2 (fd, flags);
		1911	#else
		1912	res = (errno = ENOSYS, -1);
		1913	#endif
		1914	else
		1915	res = pipe (fd);
		1916
		1917	if (!res)
		1918	{
		1919	EXTEND (SP, 2);
		1920	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1921	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1922	}
		1923	}
		1924
		1925	void _on_next_submit (SV *cb)
		1926	CODE:
		1927	SvREFCNT_dec (on_next_submit);
		1928	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1929
1323	PROTOTYPES: DISABLE	1930	PROTOTYPES: DISABLE
1324		1931
		1932	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1933
		1934	BOOT:
		1935	{
		1936	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1937	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1938	}
		1939
		1940	void
		1941	DESTROY (SV *self)
		1942	CODE:
		1943	{
		1944	aio_wd wd = SvAIO_WD (self);
		1945	#if HAVE_AT
		1946	{
		1947	SV *callback = &PL_sv_undef;
		1948	dREQ; /* clobbers next_pri :/ */
		1949	next_pri = req->pri; /* restore next_pri */
		1950	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1951	req->type = EIO_WD_CLOSE;
		1952	req->wd = wd;
		1953	REQ_SEND;
		1954	}
		1955	#else
		1956	eio_wd_close_sync (wd);
		1957	#endif
		1958	}
		1959
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1960	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1961
1327	void	1962	void
1328	cancel (aio_req_ornot req)	1963	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1964	CODE:
1331	req_cancel (req);	1965	eio_cancel (req);
1332		1966
1333	void	1967	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1968	cb (aio_req_ornot req, SV *callback = NO_INIT)
1335	CODE:	1969	PPCODE:
		1970	{
		1971	if (GIMME_V != G_VOID)
		1972	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1973
		1974	if (items > 1)
		1975	{
		1976	SV *cb_cv = get_cb (callback);
		1977
1336	SvREFCNT_dec (req->callback);	1978	SvREFCNT_dec (req->callback);
1337	req->callback = newSVsv (callback);	1979	req->callback = SvREFCNT_inc (cb_cv);
		1980	}
		1981	}
1338		1982
1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1983	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1340		1984
1341	void	1985	void
1342	add (aio_req grp, ...)	1986	add (aio_req grp, ...)
1343	PPCODE:	1987	PPCODE:
1344	{	1988	{
1345	int i;	1989	int i;
1346	aio_req req;
1347		1990
1348	if (grp->fd == 2)	1991	if (grp->int1 == 2)
1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1992	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350		1993
1351	for (i = 1; i < items; ++i )	1994	for (i = 1; i < items; ++i )
1352	{	1995	{
		1996	aio_req req;
		1997
1353	if (GIMME_V != G_VOID)	1998	if (GIMME_V != G_VOID)
1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1999	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1355		2000
1356	req = SvAIO_REQ (ST (i));	2001	req = SvAIO_REQ (ST (i));
1357		2002
1358	if (req)	2003	if (req)
1359	{	2004	eio_grp_add (grp, req);
1360	++grp->length;
1361	req->grp = grp;
1362
1363	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;
1365
1366	if (grp->grp_first)
1367	grp->grp_first->grp_prev = req;
1368
1369	grp->grp_first = req;
1370	}
1371	}	2005	}
1372	}	2006	}
		2007
		2008	void
		2009	cancel_subs (aio_req_ornot req)
		2010	CODE:
		2011	req_cancel_subs (req);
1373		2012
1374	void	2013	void
1375	result (aio_req grp, ...)	2014	result (aio_req grp, ...)
1376	CODE:	2015	CODE:
1377	{	2016	{
1378	int i;	2017	int i;
		2018	AV *av;
		2019
		2020	grp->errorno = errno;
		2021
1379	AV *av = newAV ();	2022	av = newAV ();
		2023	av_extend (av, items - 1);
1380		2024
1381	for (i = 1; i < items; ++i )	2025	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	2026	av_push (av, newSVsv (ST (i)));
1383		2027
1384	SvREFCNT_dec (grp->data);	2028	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	2029	grp->sv1 = (SV *)av;
1386	}	2030	}
1387		2031
1388	void	2032	void
		2033	errno (aio_req grp, int errorno = errno)
		2034	CODE:
		2035	grp->errorno = errorno;
		2036
		2037	void
1389	feed_limit (aio_req grp, int limit)	2038	limit (aio_req grp, int limit)
1390	CODE:	2039	CODE:
1391	grp->fd2 = limit;	2040	eio_grp_limit (grp, limit);
1392	aio_grp_feed (grp);
1393		2041
1394	void	2042	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	2043	feed (aio_req grp, SV *callback = &PL_sv_undef)
1396	CODE:	2044	CODE:
1397	{	2045	{
1398	SvREFCNT_dec (grp->fh2);	2046	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	2047	grp->sv2 = newSVsv (callback);
		2048	grp->feed = aio_grp_feed;
1400		2049
1401	if (grp->fd2 <= 0)	2050	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	2051	grp->int2 = 2;
1403		2052
1404	aio_grp_feed (grp);	2053	eio_grp_limit (grp, grp->int2);
1405	}	2054	}
1406		2055

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