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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 1.229 by root, Fri Apr 11 05:19:40 2014 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	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		151
44	#if __ia64	152	#ifndef makedev
45	# define STACKSIZE 65536	153	# define makedev(maj,min) (((maj) << 8) | (min))
		154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
		157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
		161
		162	#if PAGESIZE <= 0
		163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
		165
		166	/*****************************************************************************/
		167
		168	static void
		169	fiemap (eio_req *req)
		170	{
		171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags |= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		187	errno = ENOMEM;
		188	if (!fiemap)
		189	return;
		190
		191	req->ptr1 = fiemap;
		192
		193	fiemap->fm_start = req->offs;
		194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
		197
		198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		199	return;
		200
		201	if (req->int3 >= 0 /* not autosizing */
		202	|| !fiemap->fm_mapped_extents /* no more extents */
		203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		204	goto done;
		205
		206	/* else we have to loop -
		207	* it would be tempting (actually I tried that first) to just query the
		208	* number of extents needed, but linux often feels like not returning all
		209	* extents, without telling us it left any out. this complicates
		210	* this quite a bit.
		211	*/
		212
		213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		214
		215	for (;;)
		216	{
		217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		218	char scratch[3072];
		219	struct fiemap *incmap = (struct fiemap *)scratch;
		220
		221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		224	incmap->fm_flags = fiemap->fm_flags;
		225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		226
		227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		228	return;
		229
		230	if (!incmap->fm_mapped_extents)
		231	goto done;
		232
		233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		235	errno = ENOMEM;
		236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		242	{
		243	struct fiemap_extent *e = incmap->fm_extents + count;
		244
		245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
		253	}
		254	}
		255
		256	done:
		257	req->result = 0;
		258
46	#else	259	#else
47	# define STACKSIZE 8192	260	errno = ENOSYS;
48	#endif	261	#endif
		262	}
		263
		264	/*****************************************************************************/
49		265
50	enum {	266	enum {
51	REQ_QUIT,	267	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	};	268	};
63		269
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;	270	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
93		273
94	static int started, wanted;	274	static SV *on_next_submit;
95	static volatile int nreqs;	275	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	276	static int max_outstanding;
97	static int respipe [2];
98		277
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	278	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		279
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	280	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);	281	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
108		296
109	/* must be called at most once */	297	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
111	{	300	{
112	if (!req->self)	301	if (!req->self)
113	{	302	{
114	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	305	}
117		306
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	308	}
120		309
121	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
122	{	318	{
123	MAGIC *mg;	319	MAGIC *mg;
124		320
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
127		327
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		329
130	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	331	}
132		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static void
133	static void aio_grp_feed (aio_req grp)	345	aio_grp_feed (aio_req grp)
134	{	346	{
135	while (grp->length < grp->fd2)	347	if (grp->sv2 && SvOK (grp->sv2))
136	{	348	{
137	int old_len = grp->length;	349	dSP;
138		350
139	if (grp->fh2 && SvOK (grp->fh2))	351	ENTER;
		352	SAVETMPS;
		353	PUSHMARK (SP);
		354	XPUSHs (req_sv (grp, aio_grp_stash));
		355	PUTBACK;
		356	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		357	SPAGAIN;
		358	FREETMPS;
		359	LEAVE;
		360	}
		361	}
		362
		363	static void
		364	req_submit (eio_req *req)
		365	{
		366	eio_submit (req);
		367
		368	if (expect_false (on_next_submit))
		369	{
		370	dSP;
		371	SV *cb = sv_2mortal (on_next_submit);
		372
		373	on_next_submit = 0;
		374
		375	PUSHMARK (SP);
		376	PUTBACK;
		377	call_sv (cb, G_DISCARD | G_EVAL);
		378	}
		379	}
		380
		381	static int
		382	req_invoke (eio_req *req)
		383	{
		384	if (req->flags & FLAG_SV2_RO_OFF)
		385	SvREADONLY_off (req->sv2);
		386
		387	if (!EIO_CANCELLED (req) && req->callback)
		388	{
		389	dSP;
		390	static SV *sv_result_cache; /* caches the result integer SV */
		391	SV *sv_result;
		392
		393	ENTER;
		394	SAVETMPS;
		395	PUSHMARK (SP);
		396	EXTEND (SP, 1);
		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
140	{	400	{
141	dSP;	401	sv_result = sv_result_cache; sv_result_cache = 0;
142		402	SvIV_set (sv_result, req->result);
143	ENTER;	403	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	}	404	}
153		405	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	406	{
157	SvREFCNT_dec (grp->fh2);	407	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	408	SvREADONLY_on (sv_result);
159	break;
160	}	409	}
		410
		411	switch (req->type)
		412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
		417	case EIO_READDIR:
		418	{
		419	SV *rv = &PL_sv_undef;
		420
		421	if (req->result >= 0)
		422	{
		423	int i;
		424	char *names = (char *)req->ptr2;
		425	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		426	AV *av = newAV ();
		427
		428	av_extend (av, req->result - 1);
		429
		430	for (i = 0; i < req->result; ++i)
		431	{
		432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		435
		436	if (req->int1 & EIO_READDIR_CUSTOM2)
		437	{
		438	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		439	AV *avent = newAV ();
		440
		441	av_extend (avent, 2);
		442
		443	if (!sv_type [ent->type])
		444	{
		445	sv_type [ent->type] = newSViv (ent->type);
		446	SvREADONLY_on (sv_type [ent->type]);
		447	}
		448
		449	av_store (avent, 0, namesv);
		450	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		451	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		452
		453	av_store (av, i, newRV_noinc ((SV *)avent));
		454	}
		455	else
		456	av_store (av, i, namesv);
		457
		458	++ent;
		459	}
		460	else
		461	{
		462	SV *name = newSVpv (names, 0);
		463	av_store (av, i, name);
		464	names += SvCUR (name) + 1;
		465	}
		466	}
		467
		468	rv = sv_2mortal (newRV_noinc ((SV *)av));
		469	}
		470
		471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		475	}
		476	break;
		477
		478	case EIO_OPEN:
		479	{
		480	/* convert fd to fh */
		481	SV *fh = &PL_sv_undef;
		482
		483	if (req->result >= 0)
		484	{
		485	GV *gv = (GV *)sv_newmortal ();
		486	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		487	char sym [64];
		488	int symlen;
		489
		490	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		491	gv_init (gv, aio_stash, sym, symlen, 0);
		492
		493	symlen = snprintf (
		494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
		505	PUSHs (fh);
		506	}
		507	break;
		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
		546	case EIO_GROUP:
		547	req->int1 = 2; /* mark group as finished */
		548
		549	if (req->sv1)
		550	{
		551	int i;
		552	AV *av = (AV *)req->sv1;
		553
		554	EXTEND (SP, AvFILL (av) + 1);
		555	for (i = 0; i <= AvFILL (av); ++i)
		556	PUSHs (*av_fetch (av, i, 0));
		557	}
		558	break;
		559
		560	case EIO_NOP:
		561	case EIO_BUSY:
		562	break;
		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
		641	default:
		642	PUSHs (sv_result);
		643	break;
		644	}
		645
		646	errno = req->errorno;
		647
		648	PUTBACK;
		649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
		656
		657	FREETMPS;
		658	LEAVE;
		659
		660	PUTBACK;
161	}	661	}
162	}
163		662
164	static void aio_grp_dec (aio_req grp)	663	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	}	664	}
178		665
179	static void poll_wait ()	666	static void
		667	req_destroy (aio_req req)
180	{	668	{
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)	669	if (req->self)
306	{	670	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
309	}	673	}
310		674
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	675	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
314	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316		680
317	if (req->type == REQ_READDIR && req->result >= 0)
318	free (req->data2ptr);
319
320	Safefree (req);	681	free (req);
321	}	682	}
322		683
323	static void req_cancel (aio_req req)	684	static void
		685	req_cancel_subs (aio_req grp)
324	{	686	{
325	req->cancelled = 1;
326
327	if (req->type == REQ_GROUP)	687	if (grp->type != EIO_GROUP)
		688	return;
		689
		690	SvREFCNT_dec (grp->sv2);
		691	grp->sv2 = 0;
		692
		693	eio_grp_cancel (grp);
		694	}
		695
		696	static void ecb_cold
		697	create_respipe (void)
		698	{
		699	if (s_epipe_renew (&respipe))
		700	croak ("IO::AIO: unable to initialize result pipe");
		701	}
		702
		703	static void
		704	poll_wait (void)
		705	{
		706	while (eio_nreqs ())
328	{	707	{
329	aio_req sub;	708	int size;
330		709
331	for (sub = req->grp_first; sub; sub = sub->grp_next)	710	X_LOCK (reslock);
332	req_cancel (sub);	711	size = res_queue.size;
		712	X_UNLOCK (reslock);
		713
		714	if (size)
		715	return;
		716
		717	etp_maybe_start_thread ();
		718
		719	s_epipe_wait (&respipe);
333	}	720	}
334	}	721	}
335		722
336	static int poll_cb ()	723	static int
		724	poll_cb (void)
337	{	725	{
338	dSP;
339	int count = 0;
340	int do_croak = 0;
341	aio_req req;
342
343	for (;;)	726	for (;;)
344	{	727	{
345	pthread_mutex_lock (&reslock);	728	int res = eio_poll ();
346	req = ress;
347		729
348	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int ecb_cold
		768	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	int old_errno = errno;
		771	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		772	errno = old_errno;
		773
		774	mg->mg_obj = 0; /* just in case */
		775
		776	SvREADONLY_off (sv);
		777
		778	if (SvPVX (sv) != mg->mg_ptr)
		779	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		780
		781	SvCUR_set (sv, 0);
		782	SvPVX (sv) = 0;
		783	SvOK_off (sv);
		784
		785	return 0;
		786	}
		787
		788	static MGVTBL mmap_vtbl = {
		789	0, 0, 0, 0, mmap_free
		790	};
		791
		792	/*****************************************************************************/
		793
		794	static SV *
		795	get_cb (SV *cb_sv)
		796	{
		797	SvGETMAGIC (cb_sv);
		798	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		799	}
		800
		801	static aio_req ecb_noinline
		802	dreq (SV *callback)
		803	{
		804	SV *cb_cv;
		805	aio_req req;
		806	int req_pri = next_pri;
		807	next_pri = EIO_PRI_DEFAULT;
		808
		809	cb_cv = get_cb (callback);
		810
		811	req = calloc (sizeof (*req), 1);
		812	if (!req)
		813	croak ("out of memory during eio_req allocation");
		814
		815	req->callback = SvREFCNT_inc (cb_cv);
		816	req->pri = req_pri;
		817
		818	return req;
		819	}
		820
		821	#define dREQ \
		822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
		828	\
		829	if (GIMME_V != G_VOID) \
		830	XPUSHs (req_sv (req, aio_req_stash));
		831
		832	ecb_inline void
		833	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		834	{
		835	if (expect_false (SvROK (path)))
		836	{
		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
349	{	841	{
350	ress = req->next;	842	path = AvARRAY (rv)[1];
		843	wdob = AvARRAY (rv)[0];
351		844
352	if (!ress)	845	if (SvOK (wdob))
353	{	846	{
354	/* read any signals sent by the worker threads */	847	*wd = SvAIO_WD (wdob);
355	char buf [32];	848	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}	849	}
		850	else
		851	*wd = EIO_INVALID_WD;
361	}	852	}
362		853	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	{	854	{
374	req->fd = 1; /* mark request as delayed */	855	*wd = (aio_wd)(long)SvIVX (rv);
375	continue;	856	*wdsv = SvREFCNT_inc_NN (rv);
		857	*ptr = ".";
		858	return; /* path set to "." */
376	}	859	}
377	else	860	else
378	{	861	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	}	862	}
399		863
400	return count;	864	*pathsv = newSVsv (path);
		865	*ptr = SvPVbyte_nolen (*pathsv);
401	}	866	}
402		867
403	static void *aio_proc(void *arg);	868	static void ecb_noinline
404		869	req_set_path1 (aio_req req, SV *path)
405	static void start_thread (void)
406	{	870	{
407	sigset_t fullsigset, oldsigset;	871	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	}	872	}
423		873
424	static void req_send (aio_req req)	874	static void ecb_noinline
		875	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
425	{	876	{
426	while (started < wanted && nreqs >= started)	877	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
427	start_thread ();
428		878
429	++nreqs;	879	switch (SvTYPE (rv))
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{	880	{
437	reqe->next = req;	881	case SVt_PVIO:
438	reqe = req;	882	case SVt_PVLV:
		883	case SVt_PVGV:
		884	req->type = type_fh;
		885	req->sv1 = newSVsv (fh_or_path);
		886	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		887	break;
		888
		889	default:
		890	req->type = type_path;
		891	req_set_path1 (req, fh_or_path);
		892	break;
439	}	893	}
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	}	894	}
457		895
458	static void end_thread (void)	896	XS(boot_IO__AIO) ecb_cold;
459	{
460	aio_req req;
461	Newz (0, req, 1, aio_cb);
462	req->type = REQ_QUIT;
463		897
464	req_send (req);	898	MODULE = IO::AIO PACKAGE = IO::AIO
465	}
466		899
467	static void min_parallel (int nthreads)	900	PROTOTYPES: ENABLE
468	{
469	if (wanted < nthreads)
470	wanted = nthreads;
471	}
472		901
473	static void max_parallel (int nthreads)	902	BOOT:
474	{	903	{
475	int cur = started;	904	static const struct {
		905	const char *name;
		906	IV iv;
		907	} *civ, const_iv[] = {
		908	# define const_niv(name, value) { # name, (IV) value },
		909	# define const_iv(name) { # name, (IV) name },
		910	# define const_eio(name) { # name, (IV) EIO_ ## name },
476		911
477	if (wanted > nthreads)	912	/* you have to re-run ./gendef0 after adding/Removing any constants here */
478	wanted = nthreads;
479		913
480	while (cur > wanted)	914	const_iv (ENOSYS)
481	{	915	const_iv (EXDEV)
482	end_thread ();	916	const_iv (EBADR)
483	cur--;
484	}
485		917
486	while (started > wanted)	918	const_iv (O_RDONLY)
487	{	919	const_iv (O_WRONLY)
488	poll_wait ();	920	const_iv (O_RDWR)
489	poll_cb ();	921	const_iv (O_CREAT)
490	}	922	const_iv (O_TRUNC)
491	}	923	const_iv (O_EXCL)
		924	const_iv (O_APPEND)
492		925
493	static void create_pipe ()	926	const_iv (O_ASYNC)
494	{	927	const_iv (O_DIRECT)
495	if (pipe (respipe))	928	const_iv (O_NOATIME)
496	croak ("unable to initialize result pipe");
497		929
498	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	930	const_iv (O_CLOEXEC)
499	croak ("cannot set result pipe to nonblocking mode");	931	const_iv (O_NOCTTY)
		932	const_iv (O_NOFOLLOW)
		933	const_iv (O_NONBLOCK)
		934	const_iv (O_EXEC)
		935	const_iv (O_SEARCH)
		936	const_iv (O_DIRECTORY)
		937	const_iv (O_DSYNC)
		938	const_iv (O_RSYNC)
		939	const_iv (O_SYNC)
		940	const_iv (O_TTY_INIT)
500		941
501	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	942	const_iv (S_IFIFO)
502	croak ("cannot set result pipe to nonblocking mode");	943	const_iv (S_IFCHR)
503	}	944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
504		951
505	/*****************************************************************************/	952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
506	/* work around various missing functions */	953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
507		958
508	#if !HAVE_PREADWRITE	959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
509	# define pread aio_pread	960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
510	# define pwrite aio_pwrite	961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
511		964
512	/*	965	const_iv (ST_RDONLY)
513	* make our pread/pwrite safe against themselves, but not against	966	const_iv (ST_NOSUID)
514	* normal read/write by using a mutex. slows down execution a lot,	967	const_iv (ST_NODEV)
515	* but that's your problem, not mine.	968	const_iv (ST_NOEXEC)
516	*/	969	const_iv (ST_SYNCHRONOUS)
517	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
518		977
519	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	978	const_iv (PROT_NONE)
520	{	979	const_iv (PROT_EXEC)
521	ssize_t res;	980	const_iv (PROT_READ)
522	off_t ooffset;	981	const_iv (PROT_WRITE)
523		982
524	pthread_mutex_lock (&preadwritelock);	983	/*const_iv (MAP_FIXED)*/
525	ooffset = lseek (fd, 0, SEEK_CUR);	984	const_iv (MAP_PRIVATE)
526	lseek (fd, offset, SEEK_SET);	985	const_iv (MAP_SHARED)
527	res = read (fd, buf, count);	986	const_iv (MAP_ANONYMOUS)
528	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);
530		987
531	return res;	988	/* linuxish */
532	}	989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
533		994
534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	995	const_iv (FIEMAP_FLAG_SYNC)
535	{	996	const_iv (FIEMAP_FLAG_XATTR)
536	ssize_t res;	997	const_iv (FIEMAP_FLAGS_COMPAT)
537	off_t ooffset;	998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
538		1009
539	pthread_mutex_lock (&preadwritelock);	1010	const_iv (SPLICE_F_MOVE)
540	ooffset = lseek (fd, 0, SEEK_CUR);	1011	const_iv (SPLICE_F_NONBLOCK)
541	lseek (fd, offset, SEEK_SET);	1012	const_iv (SPLICE_F_MORE)
542	res = write (fd, buf, count);	1013	const_iv (SPLICE_F_GIFT)
543	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);
545		1014
546	return res;	1015	const_iv (SEEK_DATA)
547	}	1016	const_iv (SEEK_HOLE)
548	#endif
549		1017
550	#if !HAVE_FDATASYNC	1018	/* libeio constants */
551	# define fdatasync fsync	1019	const_eio (SEEK_SET)
552	#endif	1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
553		1022
554	#if !HAVE_READAHEAD	1023	const_eio (MCL_FUTURE)
555	# define readahead aio_readahead	1024	const_eio (MCL_CURRENT)
556		1025
557	static ssize_t readahead (int fd, off_t offset, size_t count)	1026	const_eio (MS_ASYNC)
558	{	1027	const_eio (MS_INVALIDATE)
559	char readahead_buf[4096];	1028	const_eio (MS_SYNC)
560		1029
561	while (count > 0)	1030	const_eio (MT_MODIFY)
562	{
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
564		1031
565	pread (fd, readahead_buf, len, offset);	1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
566	offset += len;	1033	const_eio (SYNC_FILE_RANGE_WRITE)
567	count -= len;	1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
568	}
569		1035
570	errno = 0;	1036	const_eio (FALLOC_FL_KEEP_SIZE)
571	}	1037	const_eio (FALLOC_FL_PUNCH_HOLE)
572	#endif
573		1038
574	#if !HAVE_READDIR_R	1039	const_eio (READDIR_DENTS)
575	# define readdir_r aio_readdir_r	1040	const_eio (READDIR_DIRS_FIRST)
		1041	const_eio (READDIR_STAT_ORDER)
		1042	const_eio (READDIR_FOUND_UNKNOWN)
576		1043
577	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1044	const_eio (DT_UNKNOWN)
578		1045	const_eio (DT_FIFO)
579	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1046	const_eio (DT_CHR)
580	{	1047	const_eio (DT_DIR)
581	struct dirent *e;	1048	const_eio (DT_BLK)
582	int errorno;	1049	const_eio (DT_REG)
583		1050	const_eio (DT_LNK)
584	pthread_mutex_lock (&readdirlock);	1051	const_eio (DT_SOCK)
585		1052	const_eio (DT_WHT)
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	}	1053	};
629		1054
630	# elif __hpux	1055	aio_stash = gv_stashpv ("IO::AIO" , 1);
631	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1057	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1058	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
632		1059
633	# elif __solaris	1060	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
634	{	1061	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
635	struct sendfilevec vec;
636	size_t sbytes;
637		1062
638	vec.sfv_fd = ifd;	1063	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
639	vec.sfv_flag = 0;
640	vec.sfv_off = offset;
641	vec.sfv_len = count;
642		1064
643	res = sendfilev (ofd, &vec, 1, &sbytes);	1065	reinit ();
		1066	}
644		1067
645	if (res < 0 && sbytes)	1068	void
		1069	reinit ()
		1070	PROTOTYPE:
		1071
		1072	void
		1073	max_poll_reqs (unsigned int nreqs)
		1074	PROTOTYPE: $
		1075	CODE:
		1076	eio_set_max_poll_reqs (nreqs);
		1077
		1078	void
		1079	max_poll_time (double nseconds)
		1080	PROTOTYPE: $
		1081	CODE:
		1082	eio_set_max_poll_time (nseconds);
		1083
		1084	void
		1085	min_parallel (unsigned int nthreads)
		1086	PROTOTYPE: $
		1087	CODE:
		1088	eio_set_min_parallel (nthreads);
		1089
		1090	void
		1091	max_parallel (unsigned int nthreads)
		1092	PROTOTYPE: $
		1093	CODE:
		1094	eio_set_max_parallel (nthreads);
		1095
		1096	void
		1097	max_idle (unsigned int nthreads)
		1098	PROTOTYPE: $
		1099	CODE:
		1100	eio_set_max_idle (nthreads);
		1101
		1102	void
		1103	idle_timeout (unsigned int seconds)
		1104	PROTOTYPE: $
		1105	CODE:
		1106	eio_set_idle_timeout (seconds);
		1107
		1108	void
		1109	max_outstanding (unsigned int maxreqs)
		1110	PROTOTYPE: $
		1111	CODE:
		1112	max_outstanding = maxreqs;
		1113
		1114	void
		1115	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1116	PPCODE:
		1117	{
		1118	dREQ;
		1119
		1120	req->type = EIO_WD_OPEN;
		1121	req_set_path1 (req, pathname);
		1122
		1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
		1132	req->type = EIO_OPEN;
		1133	req_set_path1 (req, pathname);
		1134	req->int1 = flags;
		1135	req->int2 = mode;
		1136
		1137	REQ_SEND;
		1138	}
		1139
		1140	void
		1141	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1142	ALIAS:
		1143	aio_fsync = EIO_FSYNC
		1144	aio_fdatasync = EIO_FDATASYNC
		1145	aio_syncfs = EIO_SYNCFS
		1146	PPCODE:
		1147	{
		1148	int fd = s_fileno_croak (fh, 0);
		1149	dREQ;
		1150
		1151	req->type = ix;
		1152	req->sv1 = newSVsv (fh);
		1153	req->int1 = fd;
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_SYNC_FILE_RANGE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->offs = offset;
646	res = sbytes;	1169	req->size = nbytes;
647	}	1170	req->int2 = flags;
648		1171
649	# endif	1172	REQ_SEND;
		1173	}
		1174
		1175	void
		1176	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	int fd = s_fileno_croak (fh, 0);
		1180	dREQ;
		1181
		1182	req->type = EIO_FALLOCATE;
		1183	req->sv1 = newSVsv (fh);
		1184	req->int1 = fd;
		1185	req->int2 = mode;
		1186	req->offs = offset;
		1187	req->size = len;
		1188
		1189	REQ_SEND;
		1190	}
		1191
		1192	void
		1193	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1194	PPCODE:
		1195	{
		1196	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1197	int fd = s_fileno_croak (fh, 0);
		1198	dREQ;
		1199
		1200	if (expect_false (close_fd < 0))
		1201	{
		1202	int pipefd [2];
		1203
		1204	if (
		1205	#ifdef _WIN32
		1206	_pipe (pipefd, 1, _O_BINARY) < 0
650	#else	1207	#else
651	res = -1;	1208	pipe (pipefd) < 0
652	errno = ENOSYS;	1209	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
653	#endif	1210	#endif
654		1211	|| 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	{	1212	)
675	if (cnt && !res) res = -1;	1213	abort (); /*D*/
676	break;
677	}
678		1214
679	cnt = write (ofd, buf, cnt);	1215	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	}	1216	}
832		1217
833	req->errorno = errno;	1218	req->type = EIO_DUP2;
834		1219	req->int1 = close_fd;
835	pthread_mutex_lock (&reslock);	1220	req->sv2 = newSVsv (fh);
836
837	req->next = 0;	1221	req->int2 = fd;
838		1222
839	if (rese)	1223	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	}	1224	}
858		1225
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	1226	void
950	min_parallel (nthreads)	1227	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:	1228	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: $$$;$
974	PPCODE:
975	{	1229	{
		1230	int fd = s_fileno_croak (fh, 0);
976	dREQ;	1231	dREQ;
977		1232
978	req->type = REQ_OPEN;	1233	req->type = EIO_SEEK;
979	req->data = newSVsv (pathname);	1234	req->sv1 = newSVsv (fh);
980	req->dataptr = SvPVbyte_nolen (req->data);	1235	req->int1 = fd;
981	req->fd = flags;	1236	req->offs = SvVAL64 (offset);
982	req->mode = mode;	1237	req->int2 = whence;
983		1238
984	REQ_SEND;	1239	REQ_SEND;
985	}	1240	}
986		1241
987	void	1242	void
988	aio_close (fh,callback=&PL_sv_undef)	1243	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
989	SV * fh
990	SV * callback
991	PROTOTYPE: $;$
992	ALIAS:	1244	ALIAS:
993	aio_close = REQ_CLOSE
994	aio_fsync = REQ_FSYNC
995	aio_fdatasync = REQ_FDATASYNC
996	PPCODE:
997	{
998	dREQ;
999
1000	req->type = ix;
1001	req->fh = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1003
1004	REQ_SEND (req);
1005	}
1006
1007	void
1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1009	SV * fh
1010	UV offset
1011	UV length
1012	SV * data
1013	UV dataoffset
1014	SV * callback
1015	ALIAS:
1016	aio_read = REQ_READ	1245	aio_read = EIO_READ
1017	aio_write = REQ_WRITE	1246	aio_write = EIO_WRITE
1018	PROTOTYPE: $$$$$;$
1019	PPCODE:	1247	PPCODE:
1020	{	1248	{
1021	aio_req req;
1022	STRLEN svlen;	1249	STRLEN svlen;
		1250	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1023	char *svptr = SvPVbyte (data, svlen);	1251	char *svptr = SvPVbyte (data, svlen);
1024		1252	UV len = SvUV (length);
1025	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);
1027		1253
1028	if (dataoffset < 0)	1254	if (dataoffset < 0)
1029	dataoffset += svlen;	1255	dataoffset += svlen;
1030		1256
1031	if (dataoffset < 0 || dataoffset > svlen)	1257	if (dataoffset < 0 || dataoffset > svlen)
1032	croak ("data offset outside of string");	1258	croak ("dataoffset outside of data scalar");
1033		1259
1034	if (ix == REQ_WRITE)	1260	if (ix == EIO_WRITE)
1035	{	1261	{
1036	/* write: check length and adjust. */	1262	/* write: check length and adjust. */
1037	if (length < 0 || length + dataoffset > svlen)	1263	if (!SvOK (length) || len + dataoffset > svlen)
1038	length = svlen - dataoffset;	1264	len = svlen - dataoffset;
1039	}	1265	}
1040	else	1266	else
1041	{	1267	{
1042	/* read: grow scalar as necessary */	1268	/* read: check type and grow scalar as necessary */
		1269	SvUPGRADE (data, SVt_PV);
		1270	if (SvLEN (data) >= SvCUR (data))
1043	svptr = SvGROW (data, length + dataoffset);	1271	svptr = SvGROW (data, len + dataoffset + 1);
		1272	else if (SvCUR (data) < len + dataoffset)
		1273	croak ("length + dataoffset outside of scalar, and cannot grow");
1044	}	1274	}
1045
1046	if (length < 0)
1047	croak ("length must not be negative");
1048		1275
1049	{	1276	{
1050	dREQ;	1277	dREQ;
1051		1278
1052	req->type = ix;	1279	req->type = ix;
1053	req->fh = newSVsv (fh);	1280	req->sv1 = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1281	req->int1 = fd;
1055	: IoOFP (sv_2io (fh)));	1282	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1056	req->offset = offset;	1283	req->size = len;
1057	req->length = length;
1058	req->data = SvREFCNT_inc (data);	1284	req->sv2 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	1285	req->ptr2 = (char *)svptr + dataoffset;
		1286	req->stroffset = dataoffset;
1060		1287
1061	if (!SvREADONLY (data))	1288	if (!SvREADONLY (data))
1062	{	1289	{
1063	SvREADONLY_on (data);	1290	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	1291	req->flags |= FLAG_SV2_RO_OFF;
1065	}	1292	}
1066		1293
1067	REQ_SEND;	1294	REQ_SEND;
1068	}	1295	}
1069	}	1296	}
1070		1297
1071	void	1298	void
1072	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1299	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1073	SV * out_fh	1300	ALIAS:
1074	SV * in_fh	1301	aio_readlink = EIO_READLINK
1075	UV in_offset	1302	aio_realpath = EIO_REALPATH
1076	UV length
1077	SV * callback
1078	PROTOTYPE: $$$$;$
1079	PPCODE:	1303	PPCODE:
1080	{	1304	{
		1305	dREQ;
		1306
		1307	req->type = ix;
		1308	req_set_path1 (req, pathname);
		1309
		1310	REQ_SEND;
		1311	}
		1312
		1313	void
		1314	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1315	PPCODE:
		1316	{
		1317	int ifd = s_fileno_croak (in_fh , 0);
		1318	int ofd = s_fileno_croak (out_fh, 1);
1081	dREQ;	1319	dREQ;
1082		1320
1083	req->type = REQ_SENDFILE;	1321	req->type = EIO_SENDFILE;
1084	req->fh = newSVsv (out_fh);	1322	req->sv1 = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1323	req->int1 = ofd;
1086	req->fh2 = newSVsv (in_fh);	1324	req->sv2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1325	req->int2 = ifd;
1088	req->offset = in_offset;	1326	req->offs = in_offset;
1089	req->length = length;	1327	req->size = length;
1090		1328
1091	REQ_SEND;	1329	REQ_SEND;
1092	}	1330	}
1093		1331
1094	void	1332	void
1095	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1333	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1096	SV * fh
1097	UV offset
1098	IV length
1099	SV * callback
1100	PROTOTYPE: $$$;$
1101	PPCODE:	1334	PPCODE:
1102	{	1335	{
		1336	int fd = s_fileno_croak (fh, 0);
1103	dREQ;	1337	dREQ;
1104		1338
1105	req->type = REQ_READAHEAD;	1339	req->type = EIO_READAHEAD;
1106	req->fh = newSVsv (fh);	1340	req->sv1 = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1341	req->int1 = fd;
1108	req->offset = offset;	1342	req->offs = offset;
1109	req->length = length;	1343	req->size = length;
1110		1344
1111	REQ_SEND;	1345	REQ_SEND;
1112	}	1346	}
1113		1347
1114	void	1348	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)	1349	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1116	SV * fh_or_path
1117	SV * callback
1118	ALIAS:	1350	ALIAS:
1119	aio_stat = REQ_STAT	1351	aio_stat = EIO_STAT
1120	aio_lstat = REQ_LSTAT	1352	aio_lstat = EIO_LSTAT
		1353	aio_statvfs = EIO_STATVFS
1121	PPCODE:	1354	PPCODE:
1122	{	1355	{
1123	dREQ;	1356	dREQ;
1124		1357
1125	New (0, req->statdata, 1, Stat_t);	1358	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1126	if (!req->statdata)
1127	{
1128	req_free (req);
1129	croak ("out of memory during aio_req->statdata allocation");
1130	}
1131
1132	if (SvPOK (fh_or_path))
1133	{
1134	req->type = ix;
1135	req->data = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);
1137	}
1138	else
1139	{
1140	req->type = REQ_FSTAT;
1141	req->fh = newSVsv (fh_or_path);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143	}
1144		1359
1145	REQ_SEND;	1360	REQ_SEND;
1146	}	1361	}
1147		1362
		1363	UV
		1364	major (UV dev)
		1365	ALIAS:
		1366	minor = 1
		1367	CODE:
		1368	RETVAL = ix ? major (dev) : minor (dev);
		1369	OUTPUT:
		1370	RETVAL
		1371
		1372	UV
		1373	makedev (UV maj, UV min)
		1374	CODE:
		1375	RETVAL = makedev (maj, min);
		1376	OUTPUT:
		1377	RETVAL
		1378
1148	void	1379	void
		1380	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1381	PPCODE:
		1382	{
		1383	dREQ;
		1384
		1385	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1386	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1387	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1394	PPCODE:
		1395	{
		1396	dREQ;
		1397
		1398	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1399	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	dREQ;
		1409
		1410	req->int2 = mode;
		1411	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1418	PPCODE:
		1419	{
		1420	dREQ;
		1421
		1422	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1423	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1424	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1425
		1426	REQ_SEND;
		1427	}
		1428
		1429	void
		1430	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1431	PPCODE:
		1432	{
		1433	dREQ;
		1434
		1435	req->type = EIO_READDIR;
		1436	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1437
		1438	if (flags & EIO_READDIR_DENTS)
		1439	req->int1 |= EIO_READDIR_CUSTOM2;
		1440
		1441	req_set_path1 (req, pathname);
		1442
		1443	REQ_SEND;
		1444	}
		1445
		1446	void
		1447	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1448	PPCODE:
		1449	{
		1450	dREQ;
		1451
		1452	req->type = EIO_MKDIR;
		1453	req->int2 = mode;
		1454	req_set_path1 (req, pathname);
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
1149	aio_unlink (pathname,callback=&PL_sv_undef)	1460	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	SV * callback
1152	ALIAS:	1461	ALIAS:
1153	aio_unlink = REQ_UNLINK	1462	aio_unlink = EIO_UNLINK
1154	aio_rmdir = REQ_RMDIR	1463	aio_rmdir = EIO_RMDIR
1155	aio_readdir = REQ_READDIR	1464	aio_readdir = EIO_READDIR
1156	PPCODE:	1465	PPCODE:
1157	{	1466	{
1158	dREQ;	1467	dREQ;
1159		1468
1160	req->type = ix;	1469	req->type = ix;
1161	req->data = newSVsv (pathname);	1470	req_set_path1 (req, pathname);
1162	req->dataptr = SvPVbyte_nolen (req->data);	1471
1163
1164	REQ_SEND;	1472	REQ_SEND;
1165	}	1473	}
1166		1474
1167	void	1475	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1476	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1169	SV * oldpath
1170	SV * newpath
1171	SV * callback
1172	ALIAS:	1477	ALIAS:
1173	aio_link = REQ_LINK	1478	aio_link = EIO_LINK
1174	aio_symlink = REQ_SYMLINK	1479	aio_symlink = EIO_SYMLINK
1175	aio_rename = REQ_RENAME	1480	aio_rename = EIO_RENAME
1176	PPCODE:	1481	PPCODE:
1177	{	1482	{
		1483	eio_wd wd2 = 0;
1178	dREQ;	1484	dREQ;
1179		1485
1180	req->type = ix;	1486	req->type = ix;
1181	req->fh = newSVsv (oldpath);	1487	req_set_path1 (req, oldpath);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	1488	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1183	req->data = newSVsv (newpath);	1489	req->int3 = (long)wd2;
1184	req->dataptr = SvPVbyte_nolen (req->data);
1185		1490
1186	REQ_SEND;	1491	REQ_SEND;
1187	}	1492	}
1188		1493
1189	void	1494	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	1495	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1191	double delay
1192	SV * callback
1193	PPCODE:	1496	PPCODE:
1194	{	1497	{
1195	dREQ;	1498	dREQ;
1196		1499
1197	req->type = REQ_SLEEP;	1500	req->type = EIO_MKNOD;
1198	req->fd = delay < 0. ? 0 : delay;	1501	req->int2 = (mode_t)mode;
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1502	req->offs = dev;
1200		1503	req_set_path1 (req, pathname);
		1504
1201	REQ_SEND;	1505	REQ_SEND;
1202	}	1506	}
1203		1507
1204	void	1508	void
1205	aio_group (callback=&PL_sv_undef)	1509	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1206	SV * callback	1510	ALIAS:
1207	PROTOTYPE: ;$	1511	aio_mtouch = EIO_MTOUCH
		1512	aio_msync = EIO_MSYNC
1208	PPCODE:	1513	PPCODE:
1209	{	1514	{
		1515	STRLEN svlen;
		1516	char *svptr = SvPVbyte (data, svlen);
		1517	UV len = SvUV (length);
		1518
		1519	if (offset < 0)
		1520	offset += svlen;
		1521
		1522	if (offset < 0 || offset > svlen)
		1523	croak ("offset outside of scalar");
		1524
		1525	if (!SvOK (length) || len + offset > svlen)
		1526	len = svlen - offset;
		1527
		1528	{
		1529	dREQ;
		1530
		1531	req->type = ix;
		1532	req->sv2 = SvREFCNT_inc (data);
		1533	req->ptr2 = (char *)svptr + offset;
		1534	req->size = len;
		1535	req->int1 = flags;
		1536
		1537	REQ_SEND;
		1538	}
		1539	}
		1540
		1541	void
		1542	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1543	PPCODE:
		1544	{
		1545	STRLEN svlen;
		1546	char *svptr = SvPVbyte (data, svlen);
		1547	UV len = SvUV (length);
		1548
		1549	if (offset < 0)
		1550	offset += svlen;
		1551
		1552	if (offset < 0 || offset > svlen)
		1553	croak ("offset outside of scalar");
		1554
		1555	if (!SvOK (length) || len + offset > svlen)
		1556	len = svlen - offset;
		1557
		1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_MLOCK;
		1562	req->sv2 = SvREFCNT_inc (data);
		1563	req->ptr2 = (char *)svptr + offset;
		1564	req->size = len;
		1565
		1566	REQ_SEND;
		1567	}
		1568	}
		1569
		1570	void
		1571	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = EIO_MLOCKALL;
		1577	req->int1 = flags;
		1578
		1579	REQ_SEND;
		1580	}
		1581
		1582	void
		1583	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1584	PPCODE:
		1585	{
		1586	int fd = s_fileno_croak (fh, 0);
1210	dREQ;	1587	dREQ;
		1588
		1589	req->type = EIO_CUSTOM;
		1590	req->sv1 = newSVsv (fh);
		1591	req->int1 = fd;
		1592
		1593	req->feed = fiemap;
		1594	#if HAVE_FIEMAP
		1595	/* keep our fingers crossed that the next two types are 64 bit */
		1596	req->offs = start;
		1597	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1598	req->int2 = flags;
		1599	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1600	#endif
		1601
		1602	REQ_SEND;
		1603	}
		1604
		1605	void
		1606	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1607	PPCODE:
		1608	{
		1609	dREQ;
		1610
		1611	req->type = EIO_BUSY;
		1612	req->nv1 = delay < 0. ? 0. : delay;
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_group (SV *callback=&PL_sv_undef)
		1619	PPCODE:
		1620	{
		1621	dREQ;
		1622
1211	req->type = REQ_GROUP;	1623	req->type = EIO_GROUP;
		1624
		1625	PUTBACK;
1212	req_send (req);	1626	req_submit (req);
		1627	SPAGAIN;
		1628
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1629	XPUSHs (req_sv (req, aio_grp_stash));
1214	}	1630	}
		1631
		1632	void
		1633	aio_nop (SV *callback=&PL_sv_undef)
		1634	ALIAS:
		1635	aio_nop = EIO_NOP
		1636	aio_sync = EIO_SYNC
		1637	PPCODE:
		1638	{
		1639	dREQ;
		1640
		1641	req->type = ix;
		1642
		1643	REQ_SEND;
		1644	}
		1645
		1646	int
		1647	aioreq_pri (int pri = 0)
		1648	CODE:
		1649	RETVAL = next_pri;
		1650	if (items > 0)
		1651	{
		1652	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1653	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1654	next_pri = pri;
		1655	}
		1656	OUTPUT:
		1657	RETVAL
		1658
		1659	void
		1660	aioreq_nice (int nice = 0)
		1661	CODE:
		1662	nice = next_pri - nice;
		1663	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1664	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1665	next_pri = nice;
1215		1666
1216	void	1667	void
1217	flush ()	1668	flush ()
1218	PROTOTYPE:
1219	CODE:	1669	CODE:
1220	while (nreqs)	1670	while (eio_nreqs ())
1221	{	1671	{
1222	poll_wait ();	1672	poll_wait ();
1223	poll_cb ();	1673	poll_cb ();
1224	}	1674	}
1225		1675
1226	void	1676	int
1227	poll()	1677	poll ()
1228	PROTOTYPE:
1229	CODE:	1678	CODE:
1230	if (nreqs)
1231	{
1232	poll_wait ();	1679	poll_wait ();
1233	poll_cb ();	1680	RETVAL = poll_cb ();
1234	}
1235
1236	int
1237	poll_fileno()
1238	PROTOTYPE:
1239	CODE:
1240	RETVAL = respipe [0];
1241	OUTPUT:	1681	OUTPUT:
1242	RETVAL	1682	RETVAL
1243		1683
1244	int	1684	int
		1685	poll_fileno ()
		1686	CODE:
		1687	RETVAL = s_epipe_fd (&respipe);
		1688	OUTPUT:
		1689	RETVAL
		1690
		1691	int
1245	poll_cb(...)	1692	poll_cb (...)
1246	PROTOTYPE:	1693	PROTOTYPE:
1247	CODE:	1694	CODE:
1248	RETVAL = poll_cb ();	1695	RETVAL = poll_cb ();
1249	OUTPUT:	1696	OUTPUT:
1250	RETVAL	1697	RETVAL
1251		1698
1252	void	1699	void
1253	poll_wait()	1700	poll_wait ()
1254	PROTOTYPE:
1255	CODE:	1701	CODE:
1256	if (nreqs)
1257	poll_wait ();	1702	poll_wait ();
1258		1703
1259	int	1704	int
1260	nreqs()	1705	nreqs ()
1261	PROTOTYPE:
1262	CODE:	1706	CODE:
1263	RETVAL = nreqs;	1707	RETVAL = eio_nreqs ();
1264	OUTPUT:	1708	OUTPUT:
1265	RETVAL	1709	RETVAL
1266		1710
		1711	int
		1712	nready ()
		1713	CODE:
		1714	RETVAL = eio_nready ();
		1715	OUTPUT:
		1716	RETVAL
		1717
		1718	int
		1719	npending ()
		1720	CODE:
		1721	RETVAL = eio_npending ();
		1722	OUTPUT:
		1723	RETVAL
		1724
		1725	int
		1726	nthreads ()
		1727	CODE:
		1728	RETVAL = eio_nthreads ();
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	int
		1733	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1734	CODE:
		1735	RETVAL = posix_fadvise (fh, offset, length, advice);
		1736	OUTPUT:
		1737	RETVAL
		1738
		1739	IV
		1740	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1741	CODE:
		1742	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746	void
		1747	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1748	PPCODE:
		1749	sv_unmagic (scalar, MMAP_MAGIC);
		1750	{
		1751	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1752	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1753	if (addr == (void *)-1)
		1754	XSRETURN_NO;
		1755
		1756	sv_force_normal (scalar);
		1757
		1758	/* we store the length in mg_obj, as namlen is I32 :/ */
		1759	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1760	->mg_obj = (SV *)length;
		1761
		1762	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1763
		1764	if (!(prot & PROT_WRITE))
		1765	SvREADONLY_on (scalar);
		1766
		1767	if (SvLEN (scalar))
		1768	Safefree (SvPVX (scalar));
		1769
		1770	SvPVX (scalar) = (char *)addr;
		1771	SvCUR_set (scalar, length);
		1772	SvLEN_set (scalar, 0);
		1773	SvPOK_only (scalar);
		1774
		1775	XSRETURN_YES;
		1776	}
		1777
		1778	void
		1779	munmap (SV *scalar)
		1780	CODE:
		1781	sv_unmagic (scalar, MMAP_MAGIC);
		1782
		1783	int
		1784	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1785	ALIAS:
		1786	mprotect = 1
		1787	CODE:
		1788	{
		1789	STRLEN svlen;
		1790	void *addr = SvPVbyte (scalar, svlen);
		1791	size_t len = SvUV (length);
		1792
		1793	if (offset < 0)
		1794	offset += svlen;
		1795
		1796	if (offset < 0 || offset > svlen)
		1797	croak ("offset outside of scalar");
		1798
		1799	if (!SvOK (length) || len + offset > svlen)
		1800	len = svlen - offset;
		1801
		1802	addr = (void *)(((intptr_t)addr) + offset);
		1803	eio_page_align (&addr, &len);
		1804
		1805	switch (ix)
		1806	{
		1807	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1808	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1809	}
		1810	}
		1811	OUTPUT:
		1812	RETVAL
		1813
		1814	int
		1815	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1816	CODE:
		1817	{
		1818	STRLEN svlen;
		1819	void *addr = SvPVbyte (scalar, svlen);
		1820	size_t len = SvUV (length);
		1821
		1822	if (offset < 0)
		1823	offset += svlen;
		1824
		1825	if (offset < 0 || offset > svlen)
		1826	croak ("offset outside of scalar");
		1827
		1828	if (!SvOK (length) || len + offset > svlen)
		1829	len = svlen - offset;
		1830
		1831	addr = (void *)(((intptr_t)addr) + offset);
		1832	eio_page_align (&addr, &len);
		1833	#if _POSIX_MEMLOCK_RANGE
		1834	RETVAL = munlock (addr, len);
		1835	#else
		1836	RETVAL = EIO_ENOSYS ();
		1837	#endif
		1838	}
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	int
		1843	munlockall ()
		1844	CODE:
		1845	#if _POSIX_MEMLOCK
		1846	munlockall ();
		1847	#else
		1848	RETVAL = EIO_ENOSYS ();
		1849	#endif
		1850	OUTPUT:
		1851	RETVAL
		1852
		1853	int
		1854	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1855	CODE:
		1856	{
		1857	#if HAVE_LINUX_SPLICE
		1858	loff_t off_in_, off_out_;
		1859	RETVAL = splice (
		1860	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1861	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1862	length, flags
		1863	);
		1864	#else
		1865	RETVAL = EIO_ENOSYS ();
		1866	#endif
		1867	}
		1868	OUTPUT:
		1869	RETVAL
		1870
		1871	int
		1872	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1873	CODE:
		1874	#if HAVE_LINUX_SPLICE
		1875	RETVAL = tee (rfh, wfh, length, flags);
		1876	#else
		1877	RETVAL = EIO_ENOSYS ();
		1878	#endif
		1879	OUTPUT:
		1880	RETVAL
		1881
		1882	int
		1883	pipesize (aio_rfd rfh, int new_size = -1)
		1884	PROTOTYPE: $;$
		1885	CODE:
		1886	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1887	if (new_size >= 0)
		1888	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1889	else
		1890	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1891	#else
		1892	errno = ENOSYS;
		1893	RETVAL = -1;
		1894	#endif
		1895	OUTPUT:
		1896	RETVAL
		1897
		1898	void _on_next_submit (SV *cb)
		1899	CODE:
		1900	SvREFCNT_dec (on_next_submit);
		1901	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1902
1267	PROTOTYPES: DISABLE	1903	PROTOTYPES: DISABLE
1268		1904
		1905	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1906
		1907	BOOT:
		1908	{
		1909	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1910	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1911	}
		1912
		1913	void
		1914	DESTROY (SV *self)
		1915	CODE:
		1916	{
		1917	aio_wd wd = SvAIO_WD (self);
		1918	#if HAVE_AT
		1919	{
		1920	SV *callback = &PL_sv_undef;
		1921	dREQ; /* clobbers next_pri :/ */
		1922	next_pri = req->pri; /* restore next_pri */
		1923	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1924	req->type = EIO_WD_CLOSE;
		1925	req->wd = wd;
		1926	REQ_SEND;
		1927	}
		1928	#else
		1929	eio_wd_close_sync (wd);
		1930	#endif
		1931	}
		1932
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1933	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270		1934
1271	void	1935	void
1272	cancel (aio_req_ornot req)	1936	cancel (aio_req_ornot req)
1273	PROTOTYPE:
1274	CODE:	1937	CODE:
1275	req_cancel (req);	1938	eio_cancel (req);
		1939
		1940	void
		1941	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1942	PPCODE:
		1943	{
		1944	if (GIMME_V != G_VOID)
		1945	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1946
		1947	if (items > 1)
		1948	{
		1949	SV *cb_cv =get_cb (callback);
		1950
		1951	SvREFCNT_dec (req->callback);
		1952	req->callback = SvREFCNT_inc (cb_cv);
		1953	}
		1954	}
1276		1955
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1956	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		1957
1279	void	1958	void
1280	add (aio_req grp, ...)	1959	add (aio_req grp, ...)
1281	PPCODE:	1960	PPCODE:
1282	{	1961	{
1283	int i;	1962	int i;
1284	aio_req req;
1285		1963
1286	if (grp->fd == 2)	1964	if (grp->int1 == 2)
1287	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1965	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1288		1966
1289	for (i = 1; i < items; ++i )	1967	for (i = 1; i < items; ++i )
1290	{	1968	{
		1969	aio_req req;
		1970
1291	if (GIMME_V != G_VOID)	1971	if (GIMME_V != G_VOID)
1292	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1972	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1293		1973
1294	req = SvAIO_REQ (ST (i));	1974	req = SvAIO_REQ (ST (i));
1295		1975
1296	if (req)	1976	if (req)
1297	{	1977	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	}	1978	}
1310	}	1979	}
		1980
		1981	void
		1982	cancel_subs (aio_req_ornot req)
		1983	CODE:
		1984	req_cancel_subs (req);
1311		1985
1312	void	1986	void
1313	result (aio_req grp, ...)	1987	result (aio_req grp, ...)
1314	CODE:	1988	CODE:
1315	{	1989	{
1316	int i;	1990	int i;
		1991	AV *av;
		1992
		1993	grp->errorno = errno;
		1994
1317	AV *av = newAV ();	1995	av = newAV ();
		1996	av_extend (av, items - 1);
1318		1997
1319	for (i = 1; i < items; ++i )	1998	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	1999	av_push (av, newSVsv (ST (i)));
1321		2000
1322	SvREFCNT_dec (grp->data);	2001	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	2002	grp->sv1 = (SV *)av;
1324	}	2003	}
1325		2004
1326	void	2005	void
1327	lock (aio_req grp)	2006	errno (aio_req grp, int errorno = errno)
		2007	CODE:
		2008	grp->errorno = errorno;
		2009
		2010	void
		2011	limit (aio_req grp, int limit)
1328	CODE:	2012	CODE:
1329	++grp->length;	2013	eio_grp_limit (grp, limit);
1330		2014
1331	void	2015	void
1332	unlock (aio_req grp)	2016	feed (aio_req grp, SV *callback=&PL_sv_undef)
1333	CODE:	2017	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	{	2018	{
1346	SvREFCNT_dec (grp->fh2);	2019	SvREFCNT_dec (grp->sv2);
1347	grp->fh2 = newSVsv (callback);	2020	grp->sv2 = newSVsv (callback);
		2021	grp->feed = aio_grp_feed;
1348		2022
1349	if (grp->fd2 <= 0)	2023	if (grp->int2 <= 0)
1350	grp->fd2 = 2;	2024	grp->int2 = 2;
1351		2025
1352	aio_grp_feed (grp);	2026	eio_grp_limit (grp, grp->int2);
1353	}	2027	}
1354		2028

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