ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.52 by root, Sun Oct 22 22:14:54 2006 UTC vs.
Revision 1.227 by root, Sat Sep 7 23:18:23 2013 UTC

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

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines