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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.53 by root, Mon Oct 23 00:17:07 2006 UTC vs.
Revision 1.242 by root, Tue Jul 12 20:46:33 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_SLEEP,
61	REQ_GROUP,
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	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;	271	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	272	typedef eio_req *aio_req_ornot;
		273	typedef eio_wd aio_wd;
93		274
94	static int started, wanted;	275	static SV *on_next_submit;
95	static volatile int nreqs;	276	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	277	static int max_outstanding;
97	static int respipe [2];
98		278
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	279	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		280
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	281	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);	282	static void req_cancel (aio_req req);
107	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	}
108		297
109	/* must be called at most once */	298	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	299	static SV *
		300	req_sv (aio_req req, HV *stash)
111	{	301	{
112	if (!req->self)	302	if (!req->self)
113	{	303	{
114	req->self = (SV *)newHV ();	304	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	306	}
117		307
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	309	}
120		310
121	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)
122	{	319	{
123	MAGIC *mg;	320	MAGIC *mg;
124		321
125	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")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	327	croak ("object of class IO::AIO::REQ expected");
127		328
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		330
130	return mg ? (aio_req)mg->mg_ptr : 0;	331	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	332	}
132		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
133	static void aio_grp_feed (aio_req grp)	371	aio_grp_feed (aio_req grp)
134	{	372	{
135	while (grp->length < grp->fd2)	373	if (grp->sv2 && SvOK (grp->sv2))
136	{	374	{
137	int old_len = grp->length;	375	dSP;
138		376
139	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))
140	{	426	{
141	dSP;	427	sv_result = sv_result_cache; sv_result_cache = 0;
142		428	SvIV_set (sv_result, req->result);
143	ENTER;	429	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	}	430	}
153		431	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	432	{
157	SvREFCNT_dec (grp->fh2);	433	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	434	SvREADONLY_on (sv_result);
159	break;
160	}	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;
161	}	660	}
162	}
163		661
164	static void aio_grp_dec (aio_req grp)	662	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	}	663	}
178		664
179	static void poll_wait ()	665	static void
		666	req_destroy (aio_req req)
180	{	667	{
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_SLEEP:
265	break;
266
267	default:
268	PUSHs (sv_2mortal (newSViv (req->result)));
269	break;
270	}
271
272
273	PUTBACK;
274	call_sv (req->callback, G_VOID | G_EVAL);
275	SPAGAIN;
276
277	FREETMPS;
278	LEAVE;
279
280	errno = errorno;
281
282	if (SvTRUE (ERRSV))
283	{
284	req_free (req);
285	croak (0);
286	}
287	}
288
289	static void req_free (aio_req req)
290	{
291	if (req->grp)
292	{
293	aio_req grp = req->grp;
294
295	/* unlink request */
296	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
297	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
298
299	if (grp->grp_first == req)
300	grp->grp_first = req->grp_next;
301
302	aio_grp_dec (grp);
303	}
304
305	if (req->self)	668	if (req->self)
306	{	669	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	670	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	671	SvREFCNT_dec (req->self);
309	}	672	}
310		673
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	674	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
314	SvREFCNT_dec (req->callback);	678	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316		679
317	if (req->type == REQ_READDIR && req->result >= 0)
318	free (req->data2ptr);
319
320	Safefree (req);	680	free (req);
321	}	681	}
322		682
323	static void req_cancel (aio_req req)	683	static void
		684	req_cancel_subs (aio_req grp)
324	{	685	{
325	req->cancelled = 1;
326
327	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 ())
328	{	706	{
329	aio_req sub;	707	int size;
330		708
331	for (sub = req->grp_first; sub; sub = sub->grp_next)	709	X_LOCK (EIO_POOL->reslock);
332	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);
333	}	719	}
334	}	720	}
335		721
336	static int poll_cb ()	722	static int
		723	poll_cb (void)
337	{	724	{
338	dSP;
339	int count = 0;
340	int do_croak = 0;
341	aio_req req;
342
343	for (;;)	725	for (;;)
344	{	726	{
345	pthread_mutex_lock (&reslock);	727	int res = eio_poll ();
346	req = ress;
347		728
348	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)
349	{	835	{
350	ress = req->next;	836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
351		838
352	if (!ress)	839	if (SvOK (wdob))
353	{	840	{
354	/* read any signals sent by the worker threads */	841	*wd = SvAIO_WD (wdob);
355	char buf [32];	842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}	843	}
		844	else
		845	*wd = EIO_INVALID_WD;
361	}	846	}
362		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
363	pthread_mutex_unlock (&reslock);
364
365	if (!req)
366	break;
367
368	--nreqs;
369
370	if (req->type == REQ_QUIT)
371	started--;
372	else if (req->type == REQ_GROUP && req->length)
373	{	848	{
374	req->fd = 1; /* mark request as delayed */	849	*wd = (aio_wd)(long)SvIVX (rv);
375	continue;	850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
376	}	853	}
377	else	854	else
378	{	855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
379	if (req->type == REQ_READ)
380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
381
382	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
383	SvREADONLY_off (req->data);
384
385	if (req->statdata)
386	{
387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
388	PL_laststatval = req->result;
389	PL_statcache = *(req->statdata);
390	}
391
392	req_invoke (req);
393
394	count++;
395	}
396
397	req_free (req);
398	}	856	}
399		857
400	return count;	858	*pathsv = newSVsv (path);
		859	*ptr = SvPVbyte_nolen (*pathsv);
401	}	860	}
402		861
403	static void *aio_proc(void *arg);	862	static void ecb_noinline
404		863	req_set_path1 (aio_req req, SV *path)
405	static void start_thread (void)
406	{	864	{
407	sigset_t fullsigset, oldsigset;	865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
408	pthread_t tid;
409	pthread_attr_t attr;
410
411	pthread_attr_init (&attr);
412	pthread_attr_setstacksize (&attr, STACKSIZE);
413	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
414
415	sigfillset (&fullsigset);
416	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
417
418	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
419	started++;
420
421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
422	}	866	}
423		867
424	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)
425	{	870	{
426	while (started < wanted && nreqs >= started)	871	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
427	start_thread ();
428		872
429	++nreqs;	873	switch (SvTYPE (rv))
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{	874	{
437	reqe->next = req;	875	case SVt_PVIO:
438	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;
439	}	887	}
440	else
441	reqe = reqs = req;
442
443	pthread_cond_signal (&reqwait);
444	pthread_mutex_unlock (&reqlock);
445
446	if (nreqs > max_outstanding)
447	for (;;)
448	{
449	poll_cb ();
450
451	if (nreqs <= max_outstanding)
452	break;
453
454	poll_wait ();
455	}
456	}	888	}
457		889
458	static void end_thread (void)	890	XS(boot_IO__AIO) ecb_cold;
459	{
460	aio_req req;
461	Newz (0, req, 1, aio_cb);
462	req->type = REQ_QUIT;
463		891
464	req_send (req);	892	MODULE = IO::AIO PACKAGE = IO::AIO
465	}
466		893
467	static void min_parallel (int nthreads)	894	PROTOTYPES: ENABLE
468	{
469	if (wanted < nthreads)
470	wanted = nthreads;
471	}
472		895
473	static void max_parallel (int nthreads)	896	BOOT:
474	{	897	{
475	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 },
476		905
477	if (wanted > nthreads)	906	/* you have to re-run ./gendef0 after adding/removing any constants here */
478	wanted = nthreads;	907	/* the first block can be undef if missing */
		908	const_iv (ENOSYS)
		909	const_iv (EXDEV)
		910	const_iv (EBADR)
479		911
480	while (cur > wanted)	912	/* for lseek */
481	{	913	const_iv (SEEK_DATA)
482	end_thread ();	914	const_iv (SEEK_HOLE)
483	cur--;
484	}
485		915
486	while (started > wanted)	916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
487	{	917	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
488	poll_wait ();	918	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
489	poll_cb ();	919	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
490	}	920	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
491	}	921	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
492		922
493	static void create_pipe ()	923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
494	{	924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
495	if (pipe (respipe))	925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
496	croak ("unable to initialize result pipe");	926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		928	const_niv (MADV_FREE , POSIX_MADV_FREE)
497		929
498	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	930	/* the second block will be 0 when missing */
499	croak ("cannot set result pipe to nonblocking mode");	931	const_iv (O_RDONLY)
		932	const_iv (O_WRONLY)
		933	const_iv (O_RDWR)
		934	const_iv (O_CREAT)
		935	const_iv (O_TRUNC)
		936	const_iv (O_EXCL)
		937	const_iv (O_APPEND)
500		938
501	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	939	const_iv (O_ASYNC)
502	croak ("cannot set result pipe to nonblocking mode");	940	const_iv (O_DIRECT)
503	}	941	const_iv (O_NOATIME)
504		942
505	/*****************************************************************************/	943	const_iv (O_CLOEXEC)
506	/* work around various missing functions */	944	const_iv (O_NOCTTY)
		945	const_iv (O_NOFOLLOW)
		946	const_iv (O_NONBLOCK)
		947	const_iv (O_EXEC)
		948	const_iv (O_SEARCH)
		949	const_iv (O_DIRECTORY)
		950	const_iv (O_DSYNC)
		951	const_iv (O_RSYNC)
		952	const_iv (O_SYNC)
		953	const_iv (O_PATH)
		954	const_iv (O_TMPFILE)
		955	const_iv (O_TTY_INIT)
507		956
508	#if !HAVE_PREADWRITE	957	const_iv (S_IFIFO)
509	# define pread aio_pread	958	const_iv (S_IFCHR)
510	# define pwrite aio_pwrite	959	const_iv (S_IFBLK)
		960	const_iv (S_IFLNK)
		961	const_iv (S_IFREG)
		962	const_iv (S_IFDIR)
		963	const_iv (S_IFWHT)
		964	const_iv (S_IFSOCK)
		965	const_iv (S_IFMT)
511		966
512	/*	967	const_iv (ST_RDONLY)
513	* make our pread/pwrite safe against themselves, but not against	968	const_iv (ST_NOSUID)
514	* normal read/write by using a mutex. slows down execution a lot,	969	const_iv (ST_NODEV)
515	* but that's your problem, not mine.	970	const_iv (ST_NOEXEC)
516	*/	971	const_iv (ST_SYNCHRONOUS)
517	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	972	const_iv (ST_MANDLOCK)
		973	const_iv (ST_WRITE)
		974	const_iv (ST_APPEND)
		975	const_iv (ST_IMMUTABLE)
		976	const_iv (ST_NOATIME)
		977	const_iv (ST_NODIRATIME)
		978	const_iv (ST_RELATIME)
518		979
519	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	980	const_iv (PROT_NONE)
520	{	981	const_iv (PROT_EXEC)
521	ssize_t res;	982	const_iv (PROT_READ)
522	off_t ooffset;	983	const_iv (PROT_WRITE)
523		984
524	pthread_mutex_lock (&preadwritelock);	985	const_iv (MAP_PRIVATE)
525	ooffset = lseek (fd, 0, SEEK_CUR);	986	const_iv (MAP_SHARED)
526	lseek (fd, offset, SEEK_SET);	987	const_iv (MAP_FIXED)
527	res = read (fd, buf, count);	988	const_iv (MAP_ANONYMOUS)
528	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);
530		989
531	return res;	990	/* linuxish */
532	}	991	const_iv (MAP_LOCKED)
		992	const_iv (MAP_NORESERVE)
		993	const_iv (MAP_POPULATE)
		994	const_iv (MAP_NONBLOCK)
		995	const_iv (MAP_GROWSDOWN)
		996	const_iv (MAP_32BIT)
		997	const_iv (MAP_HUGETLB)
		998	const_iv (MAP_STACK)
533		999
534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1000	const_iv (FIEMAP_FLAG_SYNC)
535	{	1001	const_iv (FIEMAP_FLAG_XATTR)
536	ssize_t res;	1002	const_iv (FIEMAP_FLAGS_COMPAT)
537	off_t ooffset;	1003	const_iv (FIEMAP_EXTENT_LAST)
		1004	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1005	const_iv (FIEMAP_EXTENT_DELALLOC)
		1006	const_iv (FIEMAP_EXTENT_ENCODED)
		1007	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1008	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1009	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1010	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1011	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1012	const_iv (FIEMAP_EXTENT_MERGED)
		1013	const_iv (FIEMAP_EXTENT_SHARED)
538		1014
539	pthread_mutex_lock (&preadwritelock);	1015	const_iv (SPLICE_F_MOVE)
540	ooffset = lseek (fd, 0, SEEK_CUR);	1016	const_iv (SPLICE_F_NONBLOCK)
541	lseek (fd, offset, SEEK_SET);	1017	const_iv (SPLICE_F_MORE)
542	res = write (fd, buf, count);	1018	const_iv (SPLICE_F_GIFT)
543	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);
545		1019
546	return res;	1020	/* these are libeio constants, and are independent of gendef0 */
547	}	1021	const_eio (SEEK_SET)
548	#endif	1022	const_eio (SEEK_CUR)
		1023	const_eio (SEEK_END)
549		1024
550	#if !HAVE_FDATASYNC	1025	const_eio (MCL_FUTURE)
551	# define fdatasync fsync	1026	const_eio (MCL_CURRENT)
552	#endif
553		1027
554	#if !HAVE_READAHEAD	1028	const_eio (MS_ASYNC)
555	# define readahead aio_readahead	1029	const_eio (MS_INVALIDATE)
		1030	const_eio (MS_SYNC)
556		1031
557	static ssize_t readahead (int fd, off_t offset, size_t count)	1032	const_eio (MT_MODIFY)
558	{
559	char readahead_buf[4096];
560		1033
561	while (count > 0)	1034	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
562	{	1035	const_eio (SYNC_FILE_RANGE_WRITE)
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	1036	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
564		1037
565	pread (fd, readahead_buf, len, offset);	1038	const_eio (FALLOC_FL_KEEP_SIZE)
566	offset += len;	1039	const_eio (FALLOC_FL_PUNCH_HOLE)
567	count -= len;	1040	const_eio (FALLOC_FL_COLLAPSE_RANGE)
568	}	1041	const_eio (FALLOC_FL_ZERO_RANGE)
569		1042
570	errno = 0;	1043	const_eio (READDIR_DENTS)
571	}	1044	const_eio (READDIR_DIRS_FIRST)
572	#endif	1045	const_eio (READDIR_STAT_ORDER)
		1046	const_eio (READDIR_FOUND_UNKNOWN)
573		1047
574	#if !HAVE_READDIR_R	1048	const_eio (DT_UNKNOWN)
575	# define readdir_r aio_readdir_r	1049	const_eio (DT_FIFO)
576		1050	const_eio (DT_CHR)
577	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1051	const_eio (DT_DIR)
578		1052	const_eio (DT_BLK)
579	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1053	const_eio (DT_REG)
580	{	1054	const_eio (DT_LNK)
581	struct dirent *e;	1055	const_eio (DT_SOCK)
582	int errorno;	1056	const_eio (DT_WHT)
583
584	pthread_mutex_lock (&readdirlock);
585
586	e = readdir (dirp);
587	errorno = errno;
588
589	if (e)
590	{
591	*res = ent;
592	strcpy (ent->d_name, e->d_name);
593	}
594	else
595	*res = 0;
596
597	pthread_mutex_unlock (&readdirlock);
598
599	errno = errorno;
600	return e ? 0 : -1;
601	}
602	#endif
603
604	/* sendfile always needs emulation */
605	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
606	{
607	ssize_t res;
608
609	if (!count)
610	return 0;
611
612	#if HAVE_SENDFILE
613	# if __linux
614	res = sendfile (ofd, ifd, &offset, count);
615
616	# elif __freebsd
617	/*
618	* Of course, the freebsd sendfile is a dire hack with no thoughts
619	* wasted on making it similar to other I/O functions.
620	*/
621	{
622	off_t sbytes;
623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
624
625	if (res < 0 && sbytes)
626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
627	res = sbytes;
628	}	1057	};
629		1058
630	# elif __hpux	1059	aio_stash = gv_stashpv ("IO::AIO" , 1);
631	res = sendfile (ofd, ifd, offset, count, 0, 0);	1060	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1061	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1062	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
632		1063
633	# elif __solaris	1064	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
634	{	1065	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
635	struct sendfilevec vec;
636	size_t sbytes;
637		1066
638	vec.sfv_fd = ifd;	1067	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
639	vec.sfv_flag = 0;
640	vec.sfv_off = offset;
641	vec.sfv_len = count;
642		1068
643	res = sendfilev (ofd, &vec, 1, &sbytes);	1069	reinit ();
		1070	}
644		1071
645	if (res < 0 && sbytes)	1072	void
		1073	reinit ()
		1074	PROTOTYPE:
		1075
		1076	void
		1077	max_poll_reqs (unsigned int nreqs)
		1078	PROTOTYPE: $
		1079	CODE:
		1080	eio_set_max_poll_reqs (nreqs);
		1081
		1082	void
		1083	max_poll_time (double nseconds)
		1084	PROTOTYPE: $
		1085	CODE:
		1086	eio_set_max_poll_time (nseconds);
		1087
		1088	void
		1089	min_parallel (unsigned int nthreads)
		1090	PROTOTYPE: $
		1091	CODE:
		1092	eio_set_min_parallel (nthreads);
		1093
		1094	void
		1095	max_parallel (unsigned int nthreads)
		1096	PROTOTYPE: $
		1097	CODE:
		1098	eio_set_max_parallel (nthreads);
		1099
		1100	void
		1101	max_idle (unsigned int nthreads)
		1102	PROTOTYPE: $
		1103	CODE:
		1104	eio_set_max_idle (nthreads);
		1105
		1106	void
		1107	idle_timeout (unsigned int seconds)
		1108	PROTOTYPE: $
		1109	CODE:
		1110	eio_set_idle_timeout (seconds);
		1111
		1112	void
		1113	max_outstanding (unsigned int maxreqs)
		1114	PROTOTYPE: $
		1115	CODE:
		1116	max_outstanding = maxreqs;
		1117
		1118	void
		1119	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1120	PPCODE:
		1121	{
		1122	dREQ;
		1123
		1124	req->type = EIO_WD_OPEN;
		1125	req_set_path1 (req, pathname);
		1126
		1127	REQ_SEND;
		1128	}
		1129
		1130	void
		1131	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1132	PPCODE:
		1133	{
		1134	dREQ;
		1135
		1136	req->type = EIO_OPEN;
		1137	req_set_path1 (req, pathname);
		1138	req->int1 = flags;
		1139	req->int2 = mode;
		1140
		1141	REQ_SEND;
		1142	}
		1143
		1144	void
		1145	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1146	ALIAS:
		1147	aio_fsync = EIO_FSYNC
		1148	aio_fdatasync = EIO_FDATASYNC
		1149	aio_syncfs = EIO_SYNCFS
		1150	PPCODE:
		1151	{
		1152	int fd = s_fileno_croak (fh, 0);
		1153	dREQ;
		1154
		1155	req->type = ix;
		1156	req->sv1 = newSVsv (fh);
		1157	req->int1 = fd;
		1158
		1159	REQ_SEND;
		1160	}
		1161
		1162	void
		1163	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	int fd = s_fileno_croak (fh, 0);
		1167	dREQ;
		1168
		1169	req->type = EIO_SYNC_FILE_RANGE;
		1170	req->sv1 = newSVsv (fh);
		1171	req->int1 = fd;
		1172	req->offs = offset;
646	res = sbytes;	1173	req->size = nbytes;
647	}	1174	req->int2 = flags;
648		1175
649	# endif	1176	REQ_SEND;
		1177	}
		1178
		1179	void
		1180	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1181	PPCODE:
		1182	{
		1183	int fd = s_fileno_croak (fh, 0);
		1184	dREQ;
		1185
		1186	req->type = EIO_FALLOCATE;
		1187	req->sv1 = newSVsv (fh);
		1188	req->int1 = fd;
		1189	req->int2 = mode;
		1190	req->offs = offset;
		1191	req->size = len;
		1192
		1193	REQ_SEND;
		1194	}
		1195
		1196	void
		1197	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1198	PPCODE:
		1199	{
		1200	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1201	int fd = s_fileno_croak (fh, 0);
		1202	dREQ;
		1203
		1204	if (expect_false (close_fd < 0))
		1205	{
		1206	int pipefd [2];
		1207
		1208	if (
		1209	#ifdef _WIN32
		1210	_pipe (pipefd, 1, _O_BINARY) < 0
650	#else	1211	#else
651	res = -1;	1212	pipe (pipefd) < 0
652	errno = ENOSYS;	1213	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
653	#endif	1214	#endif
654		1215	|| close (pipefd [1]) < 0
655	if (res < 0
656	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
657	#if __solaris
658	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
659	#endif
660	)
661	)
662	{
663	/* emulate sendfile. this is a major pain in the ass */
664	char buf[4096];
665	res = 0;
666
667	while (count)
668	{
669	ssize_t cnt;
670
671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
672
673	if (cnt <= 0)
674	{	1216	)
675	if (cnt && !res) res = -1;	1217	abort (); /*D*/
676	break;
677	}
678		1218
679	cnt = write (ofd, buf, cnt);	1219	close_fd = pipefd [0];
680
681	if (cnt <= 0)
682	{
683	if (cnt && !res) res = -1;
684	break;
685	}
686
687	offset += cnt;
688	res += cnt;
689	count -= cnt;
690	}
691	}
692
693	return res;
694	}
695
696	/* read a full directory */
697	static int scandir_ (const char *path, void **namesp)
698	{
699	DIR *dirp = opendir (path);
700	union
701	{
702	struct dirent d;
703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
704	} u;
705	struct dirent *entp;
706	char *name, *names;
707	int memlen = 4096;
708	int memofs = 0;
709	int res = 0;
710	int errorno;
711
712	if (!dirp)
713	return -1;
714
715	names = malloc (memlen);
716
717	for (;;)
718	{
719	errno = 0, readdir_r (dirp, &u.d, &entp);
720
721	if (!entp)
722	break;
723
724	name = entp->d_name;
725
726	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
727	{
728	int len = strlen (name) + 1;
729
730	res++;
731
732	while (memofs + len > memlen)
733	{
734	memlen *= 2;
735	names = realloc (names, memlen);
736	if (!names)
737	break;
738	}
739
740	memcpy (names + memofs, name, len);
741	memofs += len;
742	}
743	}
744
745	errorno = errno;
746	closedir (dirp);
747
748	if (errorno)
749	{
750	free (names);
751	errno = errorno;
752	res = -1;
753	}
754
755	*namesp = (void *)names;
756	return res;
757	}
758
759	/*****************************************************************************/
760
761	static void *aio_proc (void *thr_arg)
762	{
763	aio_req req;
764	int type;
765
766	do
767	{
768	pthread_mutex_lock (&reqlock);
769
770	for (;;)
771	{
772	req = reqs;
773
774	if (reqs)
775	{
776	reqs = reqs->next;
777	if (!reqs) reqe = 0;
778	}
779
780	if (req)
781	break;
782
783	pthread_cond_wait (&reqwait, &reqlock);
784	}
785
786	pthread_mutex_unlock (&reqlock);
787
788	errno = 0; /* strictly unnecessary */
789
790	if (!req->cancelled)
791	switch (type = req->type) /* remember type for QUIT check */
792	{
793	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
794	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
795
796	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
797	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
798
799	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
800	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
801	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
802
803	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
804	case REQ_CLOSE: req->result = close (req->fd); break;
805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
806	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
809	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
810
811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
812	case REQ_FSYNC: req->result = fsync (req->fd); break;
813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
814
815	case REQ_SLEEP:
816	{
817	struct timeval tv;
818
819	tv.tv_sec = req->fd;
820	tv.tv_usec = req->fd2;
821
822	req->result = select (0, 0, 0, 0, &tv);
823	}
824
825	case REQ_QUIT:
826	break;
827
828	default:
829	req->result = ENOSYS;
830	break;
831	}	1220	}
832		1221
833	req->errorno = errno;	1222	req->type = EIO_DUP2;
834		1223	req->int1 = close_fd;
835	pthread_mutex_lock (&reslock);	1224	req->sv2 = newSVsv (fh);
836
837	req->next = 0;	1225	req->int2 = fd;
838		1226
839	if (rese)	1227	REQ_SEND;
840	{
841	rese->next = req;
842	rese = req;
843	}
844	else
845	{
846	rese = ress = req;
847
848	/* write a dummy byte to the pipe so fh becomes ready */
849	write (respipe [1], &respipe, 1);
850	}
851
852	pthread_mutex_unlock (&reslock);
853	}
854	while (type != REQ_QUIT);
855
856	return 0;
857	}	1228	}
858		1229
859	/*****************************************************************************/
860
861	static void atfork_prepare (void)
862	{
863	pthread_mutex_lock (&reqlock);
864	pthread_mutex_lock (&reslock);
865	#if !HAVE_PREADWRITE
866	pthread_mutex_lock (&preadwritelock);
867	#endif
868	#if !HAVE_READDIR_R
869	pthread_mutex_lock (&readdirlock);
870	#endif
871	}
872
873	static void atfork_parent (void)
874	{
875	#if !HAVE_READDIR_R
876	pthread_mutex_unlock (&readdirlock);
877	#endif
878	#if !HAVE_PREADWRITE
879	pthread_mutex_unlock (&preadwritelock);
880	#endif
881	pthread_mutex_unlock (&reslock);
882	pthread_mutex_unlock (&reqlock);
883	}
884
885	static void atfork_child (void)
886	{
887	aio_req prv;
888
889	started = 0;
890
891	while (reqs)
892	{
893	prv = reqs;
894	reqs = prv->next;
895	req_free (prv);
896	}
897
898	reqs = reqe = 0;
899
900	while (ress)
901	{
902	prv = ress;
903	ress = prv->next;
904	req_free (prv);
905	}
906
907	ress = rese = 0;
908
909	close (respipe [0]);
910	close (respipe [1]);
911	create_pipe ();
912
913	atfork_parent ();
914	}
915
916	#define dREQ \
917	aio_req req; \
918	\
919	if (SvOK (callback) && !SvROK (callback)) \
920	croak ("callback must be undef or of reference type"); \
921	\
922	Newz (0, req, 1, aio_cb); \
923	if (!req) \
924	croak ("out of memory during aio_req allocation"); \
925	\
926	req->callback = newSVsv (callback)
927
928	#define REQ_SEND \
929	req_send (req); \
930	\
931	if (GIMME_V != G_VOID) \
932	XPUSHs (req_sv (req, AIO_REQ_KLASS));
933
934	MODULE = IO::AIO PACKAGE = IO::AIO
935
936	PROTOTYPES: ENABLE
937
938	BOOT:
939	{
940	HV *stash = gv_stashpv ("IO::AIO", 1);
941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
943	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
944
945	create_pipe ();
946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
947	}
948
949	void	1230	void
950	min_parallel (nthreads)	1231	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
951	int nthreads
952	PROTOTYPE: $
953
954	void
955	max_parallel (nthreads)
956	int nthreads
957	PROTOTYPE: $
958
959	int
960	max_outstanding (nreqs)
961	int nreqs
962	PROTOTYPE: $
963	CODE:	1232	PPCODE:
964	RETVAL = max_outstanding;
965	max_outstanding = nreqs;
966
967	void
968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
969	SV * pathname
970	int flags
971	int mode
972	SV * callback
973	PROTOTYPE: $$$;$
974	PPCODE:
975	{	1233	{
		1234	int fd = s_fileno_croak (fh, 0);
976	dREQ;	1235	dREQ;
977		1236
978	req->type = REQ_OPEN;	1237	req->type = EIO_SEEK;
979	req->data = newSVsv (pathname);	1238	req->sv1 = newSVsv (fh);
980	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->int1 = fd;
981	req->fd = flags;	1240	req->offs = SvVAL64 (offset);
982	req->mode = mode;	1241	req->int2 = whence;
983		1242
984	REQ_SEND;	1243	REQ_SEND;
985	}	1244	}
986		1245
987	void	1246	void
988	aio_close (fh,callback=&PL_sv_undef)	1247	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
989	SV * fh
990	SV * callback
991	PROTOTYPE: $;$
992	ALIAS:	1248	ALIAS:
993	aio_close = REQ_CLOSE
994	aio_fsync = REQ_FSYNC
995	aio_fdatasync = REQ_FDATASYNC
996	PPCODE:
997	{
998	dREQ;
999
1000	req->type = ix;
1001	req->fh = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1003
1004	REQ_SEND (req);
1005	}
1006
1007	void
1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1009	SV * fh
1010	UV offset
1011	UV length
1012	SV * data
1013	UV dataoffset
1014	SV * callback
1015	ALIAS:
1016	aio_read = REQ_READ	1249	aio_read = EIO_READ
1017	aio_write = REQ_WRITE	1250	aio_write = EIO_WRITE
1018	PROTOTYPE: $$$$$;$
1019	PPCODE:	1251	PPCODE:
1020	{	1252	{
1021	aio_req req;
1022	STRLEN svlen;	1253	STRLEN svlen;
		1254	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1023	char *svptr = SvPVbyte (data, svlen);	1255	char *svptr = SvPVbyte (data, svlen);
1024		1256	UV len = SvUV (length);
1025	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);
1027		1257
1028	if (dataoffset < 0)	1258	if (dataoffset < 0)
1029	dataoffset += svlen;	1259	dataoffset += svlen;
1030		1260
1031	if (dataoffset < 0 || dataoffset > svlen)	1261	if (dataoffset < 0 || dataoffset > svlen)
1032	croak ("data offset outside of string");	1262	croak ("dataoffset outside of data scalar");
1033		1263
1034	if (ix == REQ_WRITE)	1264	if (ix == EIO_WRITE)
1035	{	1265	{
1036	/* write: check length and adjust. */	1266	/* write: check length and adjust. */
1037	if (length < 0 || length + dataoffset > svlen)	1267	if (!SvOK (length) || len + dataoffset > svlen)
1038	length = svlen - dataoffset;	1268	len = svlen - dataoffset;
1039	}	1269	}
1040	else	1270	else
1041	{	1271	{
1042	/* read: grow scalar as necessary */	1272	/* read: check type and grow scalar as necessary */
		1273	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1043	svptr = SvGROW (data, length + dataoffset);	1274	svptr = sv_grow (data, len + dataoffset + 1);
		1275	else if (SvCUR (data) < len + dataoffset)
		1276	croak ("length + dataoffset outside of scalar, and cannot grow");
1044	}	1277	}
1045
1046	if (length < 0)
1047	croak ("length must not be negative");
1048		1278
1049	{	1279	{
1050	dREQ;	1280	dREQ;
1051		1281
1052	req->type = ix;	1282	req->type = ix;
1053	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1284	req->int1 = fd;
1055	: IoOFP (sv_2io (fh)));	1285	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1056	req->offset = offset;	1286	req->size = len;
1057	req->length = length;
1058	req->data = SvREFCNT_inc (data);	1287	req->sv2 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	1288	req->ptr2 = (char *)svptr + dataoffset;
		1289	req->stroffset = dataoffset;
1060		1290
1061	if (!SvREADONLY (data))	1291	if (!SvREADONLY (data))
1062	{	1292	{
1063	SvREADONLY_on (data);	1293	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	1294	req->flags |= FLAG_SV2_RO_OFF;
1065	}	1295	}
1066		1296
1067	REQ_SEND;	1297	REQ_SEND;
1068	}	1298	}
1069	}	1299	}
1070		1300
1071	void	1301	void
1072	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1302	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1073	SV * out_fh	1303	ALIAS:
1074	SV * in_fh	1304	aio_ioctl = EIO_IOCTL
1075	UV in_offset	1305	aio_fcntl = EIO_FCNTL
1076	UV length
1077	SV * callback
1078	PROTOTYPE: $$$$;$
1079	PPCODE:	1306	PPCODE:
1080	{	1307	{
1081	dREQ;	1308	int fd = s_fileno_croak (fh, 0);
		1309	char *svptr;
1082		1310
1083	req->type = REQ_SENDFILE;	1311	if (SvPOK (arg) || !SvNIOK (arg))
1084	req->fh = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1086	req->fh2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1088	req->offset = in_offset;
1089	req->length = length;
1090
1091	REQ_SEND;
1092	}
1093
1094	void
1095	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1096	SV * fh
1097	UV offset
1098	IV length
1099	SV * callback
1100	PROTOTYPE: $$$;$
1101	PPCODE:
1102	{
1103	dREQ;
1104
1105	req->type = REQ_READAHEAD;
1106	req->fh = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1108	req->offset = offset;
1109	req->length = length;
1110
1111	REQ_SEND;
1112	}
1113
1114	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)
1116	SV * fh_or_path
1117	SV * callback
1118	ALIAS:
1119	aio_stat = REQ_STAT
1120	aio_lstat = REQ_LSTAT
1121	PPCODE:
1122	{
1123	dREQ;
1124
1125	New (0, req->statdata, 1, Stat_t);
1126	if (!req->statdata)
1127	{	1312	{
1128	req_free (req);	1313	STRLEN svlen;
1129	croak ("out of memory during aio_req->statdata allocation");	1314	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1130	}	1315	#ifdef IOCPARM_LEN
		1316	STRLEN need = IOCPARM_LEN (request);
		1317	#else
		1318	STRLEN need = 256;
		1319	#endif
1131		1320
1132	if (SvPOK (fh_or_path))	1321	if (svlen < need)
1133	{	1322	svptr = SvGROW (arg, need);
1134	req->type = ix;
1135	req->data = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);
1137	}	1323	}
1138	else	1324	else
		1325	svptr = (char *)SvIV (arg);
		1326
1139	{	1327	{
		1328	dREQ;
		1329
1140	req->type = REQ_FSTAT;	1330	req->type = ix;
1141	req->fh = newSVsv (fh_or_path);	1331	req->sv1 = newSVsv (fh);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1332	req->int1 = fd;
		1333	req->int2 = (long)request;
		1334	req->sv2 = SvREFCNT_inc (arg);
		1335	req->ptr2 = svptr;
		1336
		1337	REQ_SEND;
1143	}	1338	}
		1339	}
		1340
		1341	void
		1342	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1343	ALIAS:
		1344	aio_readlink = EIO_READLINK
		1345	aio_realpath = EIO_REALPATH
		1346	PPCODE:
		1347	{
		1348	dREQ;
		1349
		1350	req->type = ix;
		1351	req_set_path1 (req, pathname);
1144		1352
1145	REQ_SEND;	1353	REQ_SEND;
1146	}	1354	}
1147		1355
1148	void	1356	void
1149	aio_unlink (pathname,callback=&PL_sv_undef)	1357	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1150	SV * pathname	1358	PPCODE:
1151	SV * callback	1359	{
		1360	int ifd = s_fileno_croak (in_fh , 0);
		1361	int ofd = s_fileno_croak (out_fh, 1);
		1362	dREQ;
		1363
		1364	req->type = EIO_SENDFILE;
		1365	req->sv1 = newSVsv (out_fh);
		1366	req->int1 = ofd;
		1367	req->sv2 = newSVsv (in_fh);
		1368	req->int2 = ifd;
		1369	req->offs = in_offset;
		1370	req->size = length;
		1371
		1372	REQ_SEND;
		1373	}
		1374
		1375	void
		1376	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1377	PPCODE:
		1378	{
		1379	int fd = s_fileno_croak (fh, 0);
		1380	dREQ;
		1381
		1382	req->type = EIO_READAHEAD;
		1383	req->sv1 = newSVsv (fh);
		1384	req->int1 = fd;
		1385	req->offs = offset;
		1386	req->size = length;
		1387
		1388	REQ_SEND;
		1389	}
		1390
		1391	void
		1392	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1152	ALIAS:	1393	ALIAS:
		1394	aio_stat = EIO_STAT
		1395	aio_lstat = EIO_LSTAT
		1396	aio_statvfs = EIO_STATVFS
		1397	PPCODE:
		1398	{
		1399	dREQ;
		1400
		1401	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	UV
		1407	major (UV dev)
		1408	ALIAS:
		1409	minor = 1
		1410	CODE:
		1411	RETVAL = ix ? minor (dev) : major (dev);
		1412	OUTPUT:
		1413	RETVAL
		1414
		1415	UV
		1416	makedev (UV maj, UV min)
		1417	CODE:
		1418	RETVAL = makedev (maj, min);
		1419	OUTPUT:
		1420	RETVAL
		1421
		1422	void
		1423	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427
		1428	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1429	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1430	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1437	PPCODE:
		1438	{
		1439	dREQ;
		1440
		1441	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1442	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->int2 = mode;
		1454	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
		1460	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1461	PPCODE:
		1462	{
		1463	dREQ;
		1464
		1465	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1466	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1467	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1474	PPCODE:
		1475	{
		1476	dREQ;
		1477
		1478	req->type = EIO_READDIR;
		1479	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1480
		1481	if (flags & EIO_READDIR_DENTS)
		1482	req->int1 |= EIO_READDIR_CUSTOM2;
		1483
		1484	req_set_path1 (req, pathname);
		1485
		1486	REQ_SEND;
		1487	}
		1488
		1489	void
		1490	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1491	PPCODE:
		1492	{
		1493	dREQ;
		1494
		1495	req->type = EIO_MKDIR;
		1496	req->int2 = mode;
		1497	req_set_path1 (req, pathname);
		1498
		1499	REQ_SEND;
		1500	}
		1501
		1502	void
		1503	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1504	ALIAS:
1153	aio_unlink = REQ_UNLINK	1505	aio_unlink = EIO_UNLINK
1154	aio_rmdir = REQ_RMDIR	1506	aio_rmdir = EIO_RMDIR
1155	aio_readdir = REQ_READDIR	1507	aio_readdir = EIO_READDIR
1156	PPCODE:	1508	PPCODE:
1157	{	1509	{
1158	dREQ;	1510	dREQ;
1159		1511
1160	req->type = ix;	1512	req->type = ix;
1161	req->data = newSVsv (pathname);	1513	req_set_path1 (req, pathname);
1162	req->dataptr = SvPVbyte_nolen (req->data);	1514
1163
1164	REQ_SEND;	1515	REQ_SEND;
1165	}	1516	}
1166		1517
1167	void	1518	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1519	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1169	SV * oldpath
1170	SV * newpath
1171	SV * callback
1172	ALIAS:	1520	ALIAS:
1173	aio_link = REQ_LINK	1521	aio_link = EIO_LINK
1174	aio_symlink = REQ_SYMLINK	1522	aio_symlink = EIO_SYMLINK
1175	aio_rename = REQ_RENAME	1523	aio_rename = EIO_RENAME
1176	PPCODE:	1524	PPCODE:
1177	{	1525	{
		1526	eio_wd wd2 = 0;
1178	dREQ;	1527	dREQ;
1179		1528
1180	req->type = ix;	1529	req->type = ix;
1181	req->fh = newSVsv (oldpath);	1530	req_set_path1 (req, oldpath);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	1531	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1183	req->data = newSVsv (newpath);	1532	req->int3 = (long)wd2;
1184	req->dataptr = SvPVbyte_nolen (req->data);
1185		1533
1186	REQ_SEND;	1534	REQ_SEND;
1187	}	1535	}
1188		1536
1189	void	1537	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	1538	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1191	double delay
1192	SV * callback
1193	PPCODE:	1539	PPCODE:
1194	{	1540	{
1195	dREQ;	1541	dREQ;
1196		1542
1197	req->type = REQ_SLEEP;	1543	req->type = EIO_MKNOD;
1198	req->fd = delay < 0. ? 0 : delay;	1544	req->int2 = (mode_t)mode;
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1545	req->offs = dev;
1200		1546	req_set_path1 (req, pathname);
		1547
1201	REQ_SEND;	1548	REQ_SEND;
1202	}	1549	}
1203		1550
1204	void	1551	void
1205	aio_group (callback=&PL_sv_undef)	1552	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1206	SV * callback	1553	ALIAS:
1207	PROTOTYPE: ;$	1554	aio_mtouch = EIO_MTOUCH
		1555	aio_msync = EIO_MSYNC
1208	PPCODE:	1556	PPCODE:
1209	{	1557	{
		1558	STRLEN svlen;
		1559	char *svptr = SvPVbyte (data, svlen);
		1560	UV len = SvUV (length);
		1561
		1562	if (offset < 0)
		1563	offset += svlen;
		1564
		1565	if (offset < 0 || offset > svlen)
		1566	croak ("offset outside of scalar");
		1567
		1568	if (!SvOK (length) || len + offset > svlen)
		1569	len = svlen - offset;
		1570
		1571	{
		1572	dREQ;
		1573
		1574	req->type = ix;
		1575	req->sv2 = SvREFCNT_inc (data);
		1576	req->ptr2 = (char *)svptr + offset;
		1577	req->size = len;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582	}
		1583
		1584	void
		1585	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1586	PPCODE:
		1587	{
		1588	STRLEN svlen;
		1589	char *svptr = SvPVbyte (data, svlen);
		1590	UV len = SvUV (length);
		1591
		1592	if (offset < 0)
		1593	offset += svlen;
		1594
		1595	if (offset < 0 || offset > svlen)
		1596	croak ("offset outside of scalar");
		1597
		1598	if (!SvOK (length) || len + offset > svlen)
		1599	len = svlen - offset;
		1600
		1601	{
		1602	dREQ;
		1603
		1604	req->type = EIO_MLOCK;
		1605	req->sv2 = SvREFCNT_inc (data);
		1606	req->ptr2 = (char *)svptr + offset;
		1607	req->size = len;
		1608
		1609	REQ_SEND;
		1610	}
		1611	}
		1612
		1613	void
		1614	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1615	PPCODE:
		1616	{
		1617	dREQ;
		1618
		1619	req->type = EIO_MLOCKALL;
		1620	req->int1 = flags;
		1621
		1622	REQ_SEND;
		1623	}
		1624
		1625	void
		1626	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1627	PPCODE:
		1628	{
		1629	int fd = s_fileno_croak (fh, 0);
1210	dREQ;	1630	dREQ;
		1631
		1632	req->type = EIO_CUSTOM;
		1633	req->sv1 = newSVsv (fh);
		1634	req->int1 = fd;
		1635
		1636	req->feed = fiemap;
		1637	#if HAVE_FIEMAP
		1638	/* keep our fingers crossed that the next two types are 64 bit */
		1639	req->offs = start;
		1640	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1641	req->int2 = flags;
		1642	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1643	#endif
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1650	PPCODE:
		1651	{
		1652	dREQ;
		1653
		1654	req->type = EIO_BUSY;
		1655	req->nv1 = delay < 0. ? 0. : delay;
		1656
		1657	REQ_SEND;
		1658	}
		1659
		1660	void
		1661	aio_group (SV *callback = &PL_sv_undef)
		1662	PPCODE:
		1663	{
		1664	dREQ;
		1665
1211	req->type = REQ_GROUP;	1666	req->type = EIO_GROUP;
		1667
		1668	PUTBACK;
1212	req_send (req);	1669	req_submit (req);
		1670	SPAGAIN;
		1671
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1672	XPUSHs (req_sv (req, aio_grp_stash));
1214	}	1673	}
		1674
		1675	void
		1676	aio_nop (SV *callback = &PL_sv_undef)
		1677	ALIAS:
		1678	aio_nop = EIO_NOP
		1679	aio_sync = EIO_SYNC
		1680	PPCODE:
		1681	{
		1682	dREQ;
		1683
		1684	req->type = ix;
		1685
		1686	REQ_SEND;
		1687	}
		1688
		1689	int
		1690	aioreq_pri (int pri = NO_INIT)
		1691	CODE:
		1692	RETVAL = next_pri;
		1693	if (items > 0)
		1694	{
		1695	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1696	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1697	next_pri = pri;
		1698	}
		1699	OUTPUT:
		1700	RETVAL
		1701
		1702	void
		1703	aioreq_nice (int nice = 0)
		1704	CODE:
		1705	nice = next_pri - nice;
		1706	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1707	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1708	next_pri = nice;
1215		1709
1216	void	1710	void
1217	flush ()	1711	flush ()
1218	PROTOTYPE:
1219	CODE:	1712	CODE:
1220	while (nreqs)	1713	while (eio_nreqs ())
1221	{	1714	{
1222	poll_wait ();	1715	poll_wait ();
1223	poll_cb ();	1716	poll_cb ();
1224	}	1717	}
1225		1718
1226	void	1719	int
1227	poll()	1720	poll ()
1228	PROTOTYPE:
1229	CODE:	1721	CODE:
1230	if (nreqs)
1231	{
1232	poll_wait ();	1722	poll_wait ();
1233	poll_cb ();	1723	RETVAL = poll_cb ();
1234	}
1235
1236	int
1237	poll_fileno()
1238	PROTOTYPE:
1239	CODE:
1240	RETVAL = respipe [0];
1241	OUTPUT:	1724	OUTPUT:
1242	RETVAL	1725	RETVAL
1243		1726
1244	int	1727	int
		1728	poll_fileno ()
		1729	CODE:
		1730	RETVAL = s_epipe_fd (&respipe);
		1731	OUTPUT:
		1732	RETVAL
		1733
		1734	int
1245	poll_cb(...)	1735	poll_cb (...)
1246	PROTOTYPE:	1736	PROTOTYPE:
1247	CODE:	1737	CODE:
1248	RETVAL = poll_cb ();	1738	RETVAL = poll_cb ();
1249	OUTPUT:	1739	OUTPUT:
1250	RETVAL	1740	RETVAL
1251		1741
1252	void	1742	void
1253	poll_wait()	1743	poll_wait ()
1254	PROTOTYPE:
1255	CODE:	1744	CODE:
1256	if (nreqs)
1257	poll_wait ();	1745	poll_wait ();
1258		1746
1259	int	1747	int
1260	nreqs()	1748	nreqs ()
1261	PROTOTYPE:
1262	CODE:	1749	CODE:
1263	RETVAL = nreqs;	1750	RETVAL = eio_nreqs ();
1264	OUTPUT:	1751	OUTPUT:
1265	RETVAL	1752	RETVAL
1266		1753
		1754	int
		1755	nready ()
		1756	CODE:
		1757	RETVAL = eio_nready ();
		1758	OUTPUT:
		1759	RETVAL
		1760
		1761	int
		1762	npending ()
		1763	CODE:
		1764	RETVAL = eio_npending ();
		1765	OUTPUT:
		1766	RETVAL
		1767
		1768	int
		1769	nthreads ()
		1770	CODE:
		1771	RETVAL = eio_nthreads ();
		1772	OUTPUT:
		1773	RETVAL
		1774
		1775	int
		1776	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1777	CODE:
		1778	RETVAL = posix_fadvise (fh, offset, length, advice);
		1779	OUTPUT:
		1780	RETVAL
		1781
		1782	IV
		1783	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1784	CODE:
		1785	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void
		1790	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1791	PPCODE:
		1792	sv_unmagic (scalar, MMAP_MAGIC);
		1793	{
		1794	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1795	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1796	if (addr == (void *)-1)
		1797	XSRETURN_NO;
		1798
		1799	sv_force_normal (scalar);
		1800
		1801	/* we store the length in mg_obj, as namlen is I32 :/ */
		1802	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1803	->mg_obj = (SV *)length;
		1804
		1805	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1806
		1807	if (!(prot & PROT_WRITE))
		1808	SvREADONLY_on (scalar);
		1809
		1810	if (SvLEN (scalar))
		1811	Safefree (SvPVX (scalar));
		1812
		1813	SvPVX (scalar) = (char *)addr;
		1814	SvCUR_set (scalar, length);
		1815	SvLEN_set (scalar, 0);
		1816	SvPOK_only (scalar);
		1817
		1818	XSRETURN_YES;
		1819	}
		1820
		1821	void
		1822	munmap (SV *scalar)
		1823	CODE:
		1824	sv_unmagic (scalar, MMAP_MAGIC);
		1825
		1826	int
		1827	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1828	ALIAS:
		1829	mprotect = 1
		1830	CODE:
		1831	{
		1832	STRLEN svlen;
		1833	void *addr = SvPVbyte (scalar, svlen);
		1834	STRLEN len = SvUV (length);
		1835
		1836	if (offset < 0)
		1837	offset += svlen;
		1838
		1839	if (offset < 0 || offset > svlen)
		1840	croak ("offset outside of scalar");
		1841
		1842	if (!SvOK (length) || len + offset > svlen)
		1843	len = svlen - offset;
		1844
		1845	addr = (void *)(((intptr_t)addr) + offset);
		1846	eio_page_align (&addr, &len);
		1847
		1848	switch (ix)
		1849	{
		1850	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1851	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1852	}
		1853	}
		1854	OUTPUT:
		1855	RETVAL
		1856
		1857	int
		1858	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1859	CODE:
		1860	{
		1861	STRLEN svlen;
		1862	void *addr = SvPVbyte (scalar, svlen);
		1863	size_t len = SvUV (length);
		1864
		1865	if (offset < 0)
		1866	offset += svlen;
		1867
		1868	if (offset < 0 || offset > svlen)
		1869	croak ("offset outside of scalar");
		1870
		1871	if (!SvOK (length) || len + offset > svlen)
		1872	len = svlen - offset;
		1873
		1874	addr = (void *)(((intptr_t)addr) + offset);
		1875	eio_page_align (&addr, &len);
		1876	#if _POSIX_MEMLOCK_RANGE
		1877	RETVAL = munlock (addr, len);
		1878	#else
		1879	RETVAL = EIO_ENOSYS ();
		1880	#endif
		1881	}
		1882	OUTPUT:
		1883	RETVAL
		1884
		1885	int
		1886	munlockall ()
		1887	CODE:
		1888	#if _POSIX_MEMLOCK
		1889	munlockall ();
		1890	#else
		1891	RETVAL = EIO_ENOSYS ();
		1892	#endif
		1893	OUTPUT:
		1894	RETVAL
		1895
		1896	int
		1897	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1898	CODE:
		1899	{
		1900	#if HAVE_LINUX_SPLICE
		1901	loff_t off_in_, off_out_;
		1902	RETVAL = splice (
		1903	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1904	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1905	length, flags
		1906	);
		1907	#else
		1908	RETVAL = EIO_ENOSYS ();
		1909	#endif
		1910	}
		1911	OUTPUT:
		1912	RETVAL
		1913
		1914	int
		1915	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1916	CODE:
		1917	#if HAVE_LINUX_SPLICE
		1918	RETVAL = tee (rfh, wfh, length, flags);
		1919	#else
		1920	RETVAL = EIO_ENOSYS ();
		1921	#endif
		1922	OUTPUT:
		1923	RETVAL
		1924
		1925	int
		1926	pipesize (aio_rfd rfh, int new_size = -1)
		1927	PROTOTYPE: $;$
		1928	CODE:
		1929	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1930	if (new_size >= 0)
		1931	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1932	else
		1933	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1934	#else
		1935	errno = ENOSYS;
		1936	RETVAL = -1;
		1937	#endif
		1938	OUTPUT:
		1939	RETVAL
		1940
		1941	void
		1942	pipe2 (int flags = 0)
		1943	PROTOTYPE: ;$
		1944	PPCODE:
		1945	{
		1946	int fd[2];
		1947	int res;
		1948
		1949	if (flags)
		1950	#if HAVE_PIPE2
		1951	res = pipe2 (fd, flags);
		1952	#else
		1953	res = (errno = ENOSYS, -1);
		1954	#endif
		1955	else
		1956	res = pipe (fd);
		1957
		1958	if (!res)
		1959	{
		1960	EXTEND (SP, 2);
		1961	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1962	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1963	}
		1964	}
		1965
		1966	void _on_next_submit (SV *cb)
		1967	CODE:
		1968	SvREFCNT_dec (on_next_submit);
		1969	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1970
1267	PROTOTYPES: DISABLE	1971	PROTOTYPES: DISABLE
1268		1972
		1973	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1974
		1975	BOOT:
		1976	{
		1977	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1978	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1979	}
		1980
		1981	void
		1982	DESTROY (SV *self)
		1983	CODE:
		1984	{
		1985	aio_wd wd = SvAIO_WD (self);
		1986	#if HAVE_AT
		1987	{
		1988	SV *callback = &PL_sv_undef;
		1989	dREQ; /* clobbers next_pri :/ */
		1990	next_pri = req->pri; /* restore next_pri */
		1991	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1992	req->type = EIO_WD_CLOSE;
		1993	req->wd = wd;
		1994	REQ_SEND;
		1995	}
		1996	#else
		1997	eio_wd_close_sync (wd);
		1998	#endif
		1999	}
		2000
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2001	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270		2002
1271	void	2003	void
1272	cancel (aio_req_ornot req)	2004	cancel (aio_req_ornot req)
1273	PROTOTYPE:
1274	CODE:	2005	CODE:
1275	req_cancel (req);	2006	eio_cancel (req);
		2007
		2008	void
		2009	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2010	PPCODE:
		2011	{
		2012	if (GIMME_V != G_VOID)
		2013	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2014
		2015	if (items > 1)
		2016	{
		2017	SV *cb_cv = get_cb (callback);
		2018
		2019	SvREFCNT_dec (req->callback);
		2020	req->callback = SvREFCNT_inc (cb_cv);
		2021	}
		2022	}
1276		2023
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2024	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		2025
1279	void	2026	void
1280	add (aio_req grp, ...)	2027	add (aio_req grp, ...)
1281	PPCODE:	2028	PPCODE:
1282	{	2029	{
1283	int i;	2030	int i;
1284	aio_req req;
1285		2031
1286	if (grp->fd == 2)	2032	if (grp->int1 == 2)
1287	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2033	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1288		2034
1289	for (i = 1; i < items; ++i )	2035	for (i = 1; i < items; ++i )
1290	{	2036	{
		2037	aio_req req;
		2038
1291	if (GIMME_V != G_VOID)	2039	if (GIMME_V != G_VOID)
1292	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2040	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1293		2041
1294	req = SvAIO_REQ (ST (i));	2042	req = SvAIO_REQ (ST (i));
1295		2043
1296	if (req)	2044	if (req)
1297	{	2045	eio_grp_add (grp, req);
1298	++grp->length;
1299	req->grp = grp;
1300
1301	req->grp_prev = 0;
1302	req->grp_next = grp->grp_first;
1303
1304	if (grp->grp_first)
1305	grp->grp_first->grp_prev = req;
1306
1307	grp->grp_first = req;
1308	}
1309	}	2046	}
1310	}	2047	}
		2048
		2049	void
		2050	cancel_subs (aio_req_ornot req)
		2051	CODE:
		2052	req_cancel_subs (req);
1311		2053
1312	void	2054	void
1313	result (aio_req grp, ...)	2055	result (aio_req grp, ...)
1314	CODE:	2056	CODE:
1315	{	2057	{
1316	int i;	2058	int i;
		2059	AV *av;
		2060
		2061	grp->errorno = errno;
		2062
1317	AV *av = newAV ();	2063	av = newAV ();
		2064	av_extend (av, items - 1);
1318		2065
1319	for (i = 1; i < items; ++i )	2066	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	2067	av_push (av, newSVsv (ST (i)));
1321		2068
1322	SvREFCNT_dec (grp->data);	2069	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	2070	grp->sv1 = (SV *)av;
1324	}	2071	}
1325		2072
1326	void	2073	void
1327	lock (aio_req grp)	2074	errno (aio_req grp, int errorno = errno)
		2075	CODE:
		2076	grp->errorno = errorno;
		2077
		2078	void
		2079	limit (aio_req grp, int limit)
1328	CODE:	2080	CODE:
1329	++grp->length;	2081	eio_grp_limit (grp, limit);
1330		2082
1331	void	2083	void
1332	unlock (aio_req grp)	2084	feed (aio_req grp, SV *callback = &PL_sv_undef)
1333	CODE:	2085	CODE:
1334	aio_grp_dec (grp);
1335
1336	void
1337	feeder_limit (aio_req grp, int limit)
1338	CODE:
1339	grp->fd2 = limit;
1340	aio_grp_feed (grp);
1341
1342	void
1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1344	CODE:
1345	{	2086	{
1346	SvREFCNT_dec (grp->fh2);	2087	SvREFCNT_dec (grp->sv2);
1347	grp->fh2 = newSVsv (callback);	2088	grp->sv2 = newSVsv (callback);
		2089	grp->feed = aio_grp_feed;
1348		2090
1349	if (grp->fd2 <= 0)	2091	if (grp->int2 <= 0)
1350	grp->fd2 = 2;	2092	grp->int2 = 2;
1351		2093
1352	aio_grp_feed (grp);	2094	eio_grp_limit (grp, grp->int2);
1353	}	2095	}
1354		2096

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