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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.212 by root, Sun Apr 8 00:11:50 2012 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
23	#include <limits.h>	16	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	17	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	18	#include <sched.h>
28		19
29	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
30	# 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>
31	# include <sys/sendfile.h>	82	#include <sys/select.h>
32	# elif __freebsd	83	#include <unistd.h>
33	# include <sys/socket.h>	84	#include <utime.h>
34	# include <sys/uio.h>	85	#include <signal.h>
35	# elif __hpux	86
36	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
37	# elif __solaris /* not yet */	88
38	# 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
39	# else	140	# else
40	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	142	# endif
42	#endif	143	#endif
43		144
44	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
45	#ifndef NAME_MAX	146	#include "def0.h"
46	# define NAME_MAX 4096
47	#endif
48		147
49	#if __ia64	148	#ifndef makedev
50	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	150	#endif
52	# define STACKSIZE PTHREAD_STACK_MIN	151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
53	#else	215	#else
54	# define STACKSIZE 16384	216	errno = ENOSYS;
55	#endif	217	#endif
		218	}
56		219
57	/* buffer size for various temporary buffers */	220	/*****************************************************************************/
58	#define AIO_BUFSIZE 65536
59
60	#define dBUF \
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64
65	#define fBUF free (aio_buf)
66		221
67	enum {	222	enum {
68	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};	224	};
80		225
81	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83
84	typedef struct aio_cb
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;
89	SV *fh, *fh2;
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;
97	int type;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101
102	unsigned char flags;
103	unsigned char pri;
104
105	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;
108
109	enum {
110	FLAG_CANCELLED = 0x01,
111	};
112
113	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
115		229
116	enum {	230	static SV *on_next_submit;
117	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	};
123
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	232	static int max_outstanding;
129	static int respipe [2];
130		233
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	234	static s_epipe respipe;
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif
136		235
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	236	static void req_destroy (aio_req req);
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141	static volatile aio_req reqs, reqe; /* queue start, queue end */
142	static volatile aio_req ress, rese; /* queue start, queue end */
143
144	static void req_invoke (aio_req req);	237	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
146		252
147	/* must be called at most once */	253	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
149	{	256	{
150	if (!req->self)	257	if (!req->self)
151	{	258	{
152	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154	}	261	}
155		262
156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157	}	264	}
158		265
159	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
160	{	274	{
161	MAGIC *mg;	275	MAGIC *mg;
162		276
163	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
164	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
165		283
166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167		285
168	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	287	}
170		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
171	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
172	{	302	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
174	{	304	{
175	int old_len = grp->length;	305	dSP;
176		306
177	if (grp->fh2 && SvOK (grp->fh2))	307	ENTER;
		308	SAVETMPS;
		309	PUSHMARK (SP);
		310	XPUSHs (req_sv (grp, aio_grp_stash));
		311	PUTBACK;
		312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		313	SPAGAIN;
		314	FREETMPS;
		315	LEAVE;
		316	}
		317	}
		318
		319	static void
		320	req_submit (eio_req *req)
		321	{
		322	eio_submit (req);
		323
		324	if (expect_false (on_next_submit))
		325	{
		326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
		334	}
		335	}
		336
		337	static int
		338	req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
178	{	356	{
179	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
180		358	SvIV_set (sv_result, req->result);
181	ENTER;	359	SvIOK_only (sv_result);
182	SAVETMPS;
183	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185	PUTBACK;
186	call_sv (grp->fh2, G_VOID | G_EVAL);
187	SPAGAIN;
188	FREETMPS;
189	LEAVE;
190	}	360	}
191		361	else
192	/* stop if no progress has been made */
193	if (old_len == grp->length)
194	{	362	{
195	SvREFCNT_dec (grp->fh2);	363	sv_result = newSViv (req->result);
196	grp->fh2 = 0;	364	SvREADONLY_on (sv_result);
197	break;
198	}	365	}
		366
		367	switch (req->type)
		368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
		373	case EIO_READDIR:
		374	{
		375	SV *rv = &PL_sv_undef;
		376
		377	if (req->result >= 0)
		378	{
		379	int i;
		380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		382	AV *av = newAV ();
		383
		384	av_extend (av, req->result - 1);
		385
		386	for (i = 0; i < req->result; ++i)
		387	{
		388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
		412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
		420	names += SvCUR (name) + 1;
		421	}
		422	}
		423
		424	rv = sv_2mortal (newRV_noinc ((SV *)av));
		425	}
		426
		427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		431	}
		432	break;
		433
		434	case EIO_OPEN:
		435	{
		436	/* convert fd to fh */
		437	SV *fh = &PL_sv_undef;
		438
		439	if (req->result >= 0)
		440	{
		441	GV *gv = (GV *)sv_newmortal ();
		442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
		448
		449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
		461	PUSHs (fh);
		462	}
		463	break;
		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		588	if (req->result > 0)
		589	SvIV_set (sv_result, 0);
		590	/* FALLTHROUGH */
		591
		592	default:
		593	PUSHs (sv_result);
		594	break;
		595	}
		596
		597	errno = req->errorno;
		598
		599	PUTBACK;
		600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		601	SPAGAIN;
		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
		607
		608	FREETMPS;
		609	LEAVE;
		610
		611	PUTBACK;
199	}	612	}
200	}
201		613
202	static void aio_grp_dec (aio_req grp)	614	return !!SvTRUE (ERRSV);
203	{
204	--grp->length;
205
206	/* call feeder, if applicable */
207	aio_grp_feed (grp);
208
209	/* finish, if done */
210	if (!grp->length && grp->fd)
211	{
212	req_invoke (grp);
213	req_free (grp);
214	}
215	}	615	}
216		616
217	static void poll_wait ()	617	static void
		618	req_destroy (aio_req req)
218	{	619	{
219	fd_set rfd;
220
221	while (nreqs)
222	{
223	aio_req req;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225	pthread_mutex_lock (&reslock);
226	#endif
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231
232	if (req)
233	return;
234
235	FD_ZERO(&rfd);
236	FD_SET(respipe [0], &rfd);
237
238	select (respipe [0] + 1, &rfd, 0, 0, 0);
239	}
240	}
241
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)
342	{
343	if (req->grp)
344	{
345	aio_req grp = req->grp;
346
347	/* unlink request */
348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351	if (grp->grp_first == req)
352	grp->grp_first = req->grp_next;
353
354	aio_grp_dec (grp);
355	}
356
357	if (req->self)	620	if (req->self)
358	{	621	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
361	}	624	}
362		625
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
366	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368		631
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371
372	Safefree (req);	632	free (req);
373	}	633	}
374		634
375	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
376	{	637	{
377	req->flags |= FLAG_CANCELLED;
378
379	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
380	{	658	{
381	aio_req sub;	659	int size;
382		660
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	661	X_LOCK (reslock);
384	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
385	}	671	}
386	}	672	}
387		673
388	static int poll_cb ()	674	static int
		675	poll_cb (void)
389	{	676	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	677	for (;;)
396	{	678	{
397	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
398	req = ress;
399		680
400	if (req)	681	if (res > 0)
		682	croak (0);
		683
		684	if (!max_outstanding || max_outstanding > eio_nreqs ())
		685	return res;
		686
		687	poll_wait ();
		688	}
		689	}
		690
		691	static void ecb_cold
		692	reinit (void)
		693	{
		694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
		698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		704	# define munmap(addr,length) (errno = ENOSYS, -1)
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
		744
		745	static SV *
		746	get_cb (SV *cb_sv)
		747	{
		748	SvGETMAGIC (cb_sv);
		749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		750	}
		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
		772	#define dREQ \
		773	aio_req req = dreq (callback); \
		774
		775	#define REQ_SEND \
		776	PUTBACK; \
		777	req_submit (req); \
		778	SPAGAIN; \
		779	\
		780	if (GIMME_V != G_VOID) \
		781	XPUSHs (req_sv (req, aio_req_stash));
		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
401	{	792	{
402	ress = req->next;	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
403		795
404	if (!ress)	796	if (SvOK (wdob))
405	{	797	{
406	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
407	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
413	}	803	}
414		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;
419
420	--nreqs;
421
422	if (req->type == REQ_QUIT)
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{	805	{
426	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
427	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
428	}	810	}
429	else	811	else
430	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	813	}
451		814
452	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
453	}	817	}
454		818
455	static void *aio_proc(void *arg);	819	static void ecb_noinline
456		820	req_set_path1 (aio_req req, SV *path)
457	static void start_thread (void)
458	{	821	{
459	sigset_t fullsigset, oldsigset;	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}	823	}
475		824
476	static void req_send (aio_req req)	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
477	{	827	{
478	while (started < wanted && nreqs >= started)	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
479	start_thread ();
480		829
481	++nreqs;	830	switch (SvTYPE (rv))
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{	831	{
489	reqe->next = req;	832	case SVt_PVIO:
490	reqe = req;	833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
491	}	844	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}	845	}
509		846
510	static void end_thread (void)	847	XS(boot_IO__AIO) ecb_cold;
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515		848
516	req_send (req);	849	MODULE = IO::AIO PACKAGE = IO::AIO
517	}
518		850
519	static void min_parallel (int nthreads)	851	PROTOTYPES: ENABLE
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524		852
525	static void max_parallel (int nthreads)	853	BOOT:
526	{	854	{
527	int cur = started;	855	static const struct {
		856	const char *name;
		857	IV iv;
		858	} *civ, const_iv[] = {
		859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
		861	# define const_eio(name) { # name, (IV) EIO_ ## name },
528		862
529	if (wanted > nthreads)	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
530	wanted = nthreads;
531		864
532	while (cur > wanted)	865	const_iv (ENOSYS)
533	{	866	const_iv (EXDEV)
534	end_thread ();	867	const_iv (EBADR)
535	cur--;
536	}
537		868
538	while (started > wanted)	869	const_iv (O_RDONLY)
539	{	870	const_iv (O_WRONLY)
540	poll_wait ();	871	const_iv (O_RDWR)
541	poll_cb ();	872	const_iv (O_CREAT)
542	}	873	const_iv (O_TRUNC)
543	}	874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
544		876
545	static void create_pipe ()	877	const_iv (O_ASYNC)
546	{	878	const_iv (O_DIRECT)
547	if (pipe (respipe))	879	const_iv (O_NOATIME)
548	croak ("unable to initialize result pipe");
549		880
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	881	const_iv (O_CLOEXEC)
551	croak ("cannot set result pipe to nonblocking mode");	882	const_iv (O_NOCTTY)
		883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
552		892
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	893	const_iv (S_IFIFO)
554	croak ("cannot set result pipe to nonblocking mode");	894	const_iv (S_IFCHR)
555	}	895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
556		902
557	/*****************************************************************************/	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
558	/* work around various missing functions */	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
559		909
560	#if !HAVE_PREADWRITE	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
561	# define pread aio_pread	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
562	# define pwrite aio_pwrite	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
563		915
564	/*	916	const_iv (ST_RDONLY)
565	* make our pread/pwrite safe against themselves, but not against	917	const_iv (ST_NOSUID)
566	* normal read/write by using a mutex. slows down execution a lot,	918	const_iv (ST_NODEV)
567	* but that's your problem, not mine.	919	const_iv (ST_NOEXEC)
568	*/	920	const_iv (ST_SYNCHRONOUS)
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
570		928
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	929	const_iv (PROT_NONE)
572	{	930	const_iv (PROT_EXEC)
573	ssize_t res;	931	const_iv (PROT_READ)
574	off_t ooffset;	932	const_iv (PROT_WRITE)
575		933
576	pthread_mutex_lock (&preadwritelock);	934	/*const_iv (MAP_FIXED)*/
577	ooffset = lseek (fd, 0, SEEK_CUR);	935	const_iv (MAP_PRIVATE)
578	lseek (fd, offset, SEEK_SET);	936	const_iv (MAP_SHARED)
579	res = read (fd, buf, count);	937	const_iv (MAP_ANONYMOUS)
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582		938
583	return res;	939	/* linuxish */
584	}	940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
585		945
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	946	const_iv (FIEMAP_FLAG_SYNC)
587	{	947	const_iv (FIEMAP_FLAG_XATTR)
588	ssize_t res;	948	const_iv (FIEMAP_FLAGS_COMPAT)
589	off_t ooffset;	949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
590		960
591	pthread_mutex_lock (&preadwritelock);	961	const_eio (SEEK_SET)
592	ooffset = lseek (fd, 0, SEEK_CUR);	962	const_eio (SEEK_CUR)
593	lseek (fd, offset, SEEK_SET);	963	const_eio (SEEK_END)
594	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597		964
598	return res;	965	const_eio (MCL_FUTURE)
599	}	966	const_eio (MCL_CURRENT)
600	#endif
601		967
602	#if !HAVE_FDATASYNC	968	const_eio (MS_ASYNC)
603	# define fdatasync fsync	969	const_eio (MS_INVALIDATE)
604	#endif	970	const_eio (MS_SYNC)
605		971
606	#if !HAVE_READAHEAD	972	const_eio (MT_MODIFY)
607	# define readahead aio_readahead
608		973
609	static ssize_t readahead (int fd, off_t offset, size_t count)	974	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
610	{	975	const_eio (SYNC_FILE_RANGE_WRITE)
611	dBUF;	976	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
612		977
613	while (count > 0)	978	const_eio (FALLOC_FL_KEEP_SIZE)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616		979
617	pread (fd, aio_buf, len, offset);	980	const_eio (READDIR_DENTS)
618	offset += len;	981	const_eio (READDIR_DIRS_FIRST)
619	count -= len;	982	const_eio (READDIR_STAT_ORDER)
620	}	983	const_eio (READDIR_FOUND_UNKNOWN)
621		984
622	fBUF;	985	const_eio (DT_UNKNOWN)
623		986	const_eio (DT_FIFO)
624	errno = 0;	987	const_eio (DT_CHR)
625	}	988	const_eio (DT_DIR)
626	#endif	989	const_eio (DT_BLK)
627		990	const_eio (DT_REG)
628	#if !HAVE_READDIR_R	991	const_eio (DT_LNK)
629	# define readdir_r aio_readdir_r	992	const_eio (DT_SOCK)
630		993	const_eio (DT_WHT)
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{
635	struct dirent *e;
636	int errorno;
637
638	pthread_mutex_lock (&readdirlock);
639
640	e = readdir (dirp);
641	errorno = errno;
642
643	if (e)
644	{
645	*res = ent;
646	strcpy (ent->d_name, e->d_name);
647	}
648	else
649	*res = 0;
650
651	pthread_mutex_unlock (&readdirlock);
652
653	errno = errorno;
654	return e ? 0 : -1;
655	}
656	#endif
657
658	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
660	{
661	ssize_t res;
662
663	if (!count)
664	return 0;
665
666	#if HAVE_SENDFILE
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669
670	# elif __freebsd
671	/*
672	* Of course, the freebsd sendfile is a dire hack with no thoughts
673	* wasted on making it similar to other I/O functions.
674	*/
675	{
676	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678
679	if (res < 0 && sbytes)
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
681	res = sbytes;
682	}	994	};
683		995
684	# elif __hpux	996	aio_stash = gv_stashpv ("IO::AIO" , 1);
685	res = sendfile (ofd, ifd, offset, count, 0, 0);	997	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		998	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		999	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
686		1000
687	# elif __solaris	1001	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
688	{	1002	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
689	struct sendfilevec vec;
690	size_t sbytes;
691		1003
692	vec.sfv_fd = ifd;	1004	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
693	vec.sfv_flag = 0;
694	vec.sfv_off = offset;
695	vec.sfv_len = count;
696		1005
697	res = sendfilev (ofd, &vec, 1, &sbytes);	1006	reinit ();
		1007	}
698		1008
699	if (res < 0 && sbytes)	1009	void
		1010	reinit ()
		1011	PROTOTYPE:
		1012
		1013	void
		1014	max_poll_reqs (unsigned int nreqs)
		1015	PROTOTYPE: $
		1016	CODE:
		1017	eio_set_max_poll_reqs (nreqs);
		1018
		1019	void
		1020	max_poll_time (double nseconds)
		1021	PROTOTYPE: $
		1022	CODE:
		1023	eio_set_max_poll_time (nseconds);
		1024
		1025	void
		1026	min_parallel (unsigned int nthreads)
		1027	PROTOTYPE: $
		1028	CODE:
		1029	eio_set_min_parallel (nthreads);
		1030
		1031	void
		1032	max_parallel (unsigned int nthreads)
		1033	PROTOTYPE: $
		1034	CODE:
		1035	eio_set_max_parallel (nthreads);
		1036
		1037	void
		1038	max_idle (unsigned int nthreads)
		1039	PROTOTYPE: $
		1040	CODE:
		1041	eio_set_max_idle (nthreads);
		1042
		1043	void
		1044	idle_timeout (unsigned int seconds)
		1045	PROTOTYPE: $
		1046	CODE:
		1047	eio_set_idle_timeout (seconds);
		1048
		1049	void
		1050	max_outstanding (unsigned int maxreqs)
		1051	PROTOTYPE: $
		1052	CODE:
		1053	max_outstanding = maxreqs;
		1054
		1055	void
		1056	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->type = EIO_WD_OPEN;
		1062	req_set_path1 (req, pathname);
		1063
		1064	REQ_SEND;
		1065	}
		1066
		1067	void
		1068	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1069	PPCODE:
		1070	{
		1071	dREQ;
		1072
		1073	req->type = EIO_OPEN;
		1074	req_set_path1 (req, pathname);
		1075	req->int1 = flags;
		1076	req->int2 = mode;
		1077
		1078	REQ_SEND;
		1079	}
		1080
		1081	void
		1082	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1083	ALIAS:
		1084	aio_fsync = EIO_FSYNC
		1085	aio_fdatasync = EIO_FDATASYNC
		1086	aio_syncfs = EIO_SYNCFS
		1087	PPCODE:
		1088	{
		1089	int fd = s_fileno_croak (fh, 0);
		1090	dREQ;
		1091
		1092	req->type = ix;
		1093	req->sv1 = newSVsv (fh);
		1094	req->int1 = fd;
		1095
		1096	REQ_SEND;
		1097	}
		1098
		1099	void
		1100	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1101	PPCODE:
		1102	{
		1103	int fd = s_fileno_croak (fh, 0);
		1104	dREQ;
		1105
		1106	req->type = EIO_SYNC_FILE_RANGE;
		1107	req->sv1 = newSVsv (fh);
		1108	req->int1 = fd;
		1109	req->offs = offset;
700	res = sbytes;	1110	req->size = nbytes;
701	}	1111	req->int2 = flags;
702		1112
703	# endif	1113	REQ_SEND;
		1114	}
		1115
		1116	void
		1117	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_FALLOCATE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->int2 = mode;
		1127	req->offs = offset;
		1128	req->size = len;
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1138	int fd = s_fileno_croak (fh, 0);
		1139	dREQ;
		1140
		1141	if (expect_false (close_fd < 0))
		1142	{
		1143	int pipefd [2];
		1144
		1145	if (
		1146	#ifdef _WIN32
		1147	_pipe (pipefd, 1, _O_BINARY) < 0
704	#else	1148	#else
705	res = -1;	1149	pipe (pipefd) < 0
706	errno = ENOSYS;	1150	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
707	#endif	1151	#endif
708		1152	|| close (pipefd [1]) < 0
709	if (res < 0
710	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711	#if __solaris
712	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
713	#endif
714	)
715	)
716	{
717	/* emulate sendfile. this is a major pain in the ass */
718	dBUF;
719
720	res = 0;
721
722	while (count)
723	{
724	ssize_t cnt;
725
726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728	if (cnt <= 0)
729	{	1153	)
730	if (cnt && !res) res = -1;	1154	abort (); /*D*/
731	break;
732	}
733		1155
734	cnt = write (ofd, aio_buf, cnt);	1156	close_fd = pipefd [0];
735
736	if (cnt <= 0)
737	{
738	if (cnt && !res) res = -1;
739	break;
740	}
741
742	offset += cnt;
743	res += cnt;
744	count -= cnt;
745	}
746
747	fBUF;
748	}
749
750	return res;
751	}
752
753	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)
755	{
756	DIR *dirp;
757	union
758	{
759	struct dirent d;
760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761	} *u;
762	struct dirent *entp;
763	char *name, *names;
764	int memlen = 4096;
765	int memofs = 0;
766	int res = 0;
767	int errorno;
768
769	dirp = opendir (path);
770	if (!dirp)
771	return -1;
772
773	u = malloc (sizeof (*u));
774	names = malloc (memlen);
775
776	if (u && names)
777	for (;;)
778	{
779	errno = 0;
780	readdir_r (dirp, &u->d, &entp);
781
782	if (!entp)
783	break;
784
785	name = entp->d_name;
786
787	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788	{
789	int len = strlen (name) + 1;
790
791	res++;
792
793	while (memofs + len > memlen)
794	{
795	memlen *= 2;
796	names = realloc (names, memlen);
797	if (!names)
798	break;
799	}
800
801	memcpy (names + memofs, name, len);
802	memofs += len;
803	}	1157	}
804	}
805		1158
806	errorno = errno;	1159	req->type = EIO_DUP2;
807	free (u);	1160	req->int1 = close_fd;
808	closedir (dirp);	1161	req->sv2 = newSVsv (fh);
809
810	if (errorno)
811	{
812	free (names);
813	errno = errorno;
814	res = -1;
815	}
816
817	*namesp = (void *)names;
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831
832	for (;;)
833	{
834	req = reqs;
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841
842	if (req)
843	break;
844
845	pthread_cond_wait (&reqwait, &reqlock);
846	}
847
848	pthread_mutex_unlock (&reqlock);
849
850	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852
853	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)
855	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878	case REQ_SLEEP:
879	{
880	struct timeval tv;
881
882	tv.tv_sec = req->fd;
883	tv.tv_usec = req->fd2;
884
885	req->result = select (0, 0, 0, 0, &tv);
886	}
887
888	case REQ_GROUP:
889	case REQ_NOP:
890	case REQ_QUIT:
891	break;
892
893	default:
894	req->result = ENOSYS;
895	break;
896	}
897
898	req->errorno = errno;
899
900	pthread_mutex_lock (&reslock);
901
902	req->next = 0;	1162	req->int2 = fd;
903		1163
904	if (rese)	1164	REQ_SEND;
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);
915	}
916
917	pthread_mutex_unlock (&reslock);
918	}
919	while (type != REQ_QUIT);
920
921	return 0;
922	}	1165	}
923		1166
924	/*****************************************************************************/
925
926	static void atfork_prepare (void)
927	{
928	pthread_mutex_lock (&reqlock);
929	pthread_mutex_lock (&reslock);
930	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);
932	#endif
933	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);
935	#endif
936	}
937
938	static void atfork_parent (void)
939	{
940	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);
942	#endif
943	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);
945	#endif
946	pthread_mutex_unlock (&reslock);
947	pthread_mutex_unlock (&reqlock);
948	}
949
950	static void atfork_child (void)
951	{
952	aio_req prv;
953
954	started = 0;
955
956	while (reqs)
957	{
958	prv = reqs;
959	reqs = prv->next;
960	req_free (prv);
961	}
962
963	reqs = reqe = 0;
964
965	while (ress)
966	{
967	prv = ress;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973
974	close (respipe [0]);
975	close (respipe [1]);
976	create_pipe ();
977
978	atfork_parent ();
979	}
980
981	#define dREQ \
982	aio_req req; \
983	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \
985	\
986	if (SvOK (callback) && !SvROK (callback)) \
987	croak ("callback must be undef or of reference type"); \
988	\
989	Newz (0, req, 1, aio_cb); \
990	if (!req) \
991	croak ("out of memory during aio_req allocation"); \
992	\
993	req->callback = newSVsv (callback); \
994	req->pri = req_pri
995
996	#define REQ_SEND \
997	req_send (req); \
998	\
999	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001
1002	MODULE = IO::AIO PACKAGE = IO::AIO
1003
1004	PROTOTYPES: ENABLE
1005
1006	BOOT:
1007	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012
1013	create_pipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016
1017	void	1167	void
1018	min_parallel (nthreads)	1168	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1019	int nthreads
1020	PROTOTYPE: $
1021
1022	void
1023	max_parallel (nthreads)
1024	int nthreads
1025	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	1169	PPCODE:
1032	RETVAL = max_outstanding;
1033	max_outstanding = nreqs;
1034
1035	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$
1042	PPCODE:
1043	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1044	dREQ;	1172	dREQ;
1045		1173
1046	req->type = REQ_OPEN;	1174	req->type = EIO_SEEK;
1047	req->data = newSVsv (pathname);	1175	req->sv1 = newSVsv (fh);
1048	req->dataptr = SvPVbyte_nolen (req->data);	1176	req->int1 = fd;
1049	req->fd = flags;	1177	req->offs = SvVAL64 (offset);
1050	req->mode = mode;	1178	req->int2 = whence;
1051		1179
1052	REQ_SEND;	1180	REQ_SEND;
1053	}	1181	}
1054		1182
1055	void	1183	void
1056	aio_close (fh,callback=&PL_sv_undef)	1184	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$
1060	ALIAS:	1185	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC
1064	PPCODE:
1065	{
1066	dREQ;
1067
1068	req->type = ix;
1069	req->fh = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071
1072	REQ_SEND (req);
1073	}
1074
1075	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:
1084	aio_read = REQ_READ	1186	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	1187	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$
1087	PPCODE:	1188	PPCODE:
1088	{	1189	{
1089	aio_req req;
1090	STRLEN svlen;	1190	STRLEN svlen;
		1191	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	1192	char *svptr = SvPVbyte (data, svlen);
1092		1193	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		1194
1096	if (dataoffset < 0)	1195	if (dataoffset < 0)
1097	dataoffset += svlen;	1196	dataoffset += svlen;
1098		1197
1099	if (dataoffset < 0 || dataoffset > svlen)	1198	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	1199	croak ("dataoffset outside of data scalar");
1101		1200
1102	if (ix == REQ_WRITE)	1201	if (ix == EIO_WRITE)
1103	{	1202	{
1104	/* write: check length and adjust. */	1203	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	1204	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	1205	len = svlen - dataoffset;
1107	}	1206	}
1108	else	1207	else
1109	{	1208	{
1110	/* read: grow scalar as necessary */	1209	/* read: check type and grow scalar as necessary */
		1210	SvUPGRADE (data, SVt_PV);
1111	svptr = SvGROW (data, length + dataoffset);	1211	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	1212	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		1213
1117	{	1214	{
1118	dREQ;	1215	dREQ;
1119		1216
1120	req->type = ix;	1217	req->type = ix;
1121	req->fh = newSVsv (fh);	1218	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1219	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	1220	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	1221	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	1222	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	1223	req->ptr2 = (char *)svptr + dataoffset;
		1224	req->stroffset = dataoffset;
1128		1225
1129	if (!SvREADONLY (data))	1226	if (!SvREADONLY (data))
1130	{	1227	{
1131	SvREADONLY_on (data);	1228	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	1229	req->flags |= FLAG_SV2_RO_OFF;
1133	}	1230	}
1134		1231
1135	REQ_SEND;	1232	REQ_SEND;
1136	}	1233	}
1137	}	1234	}
1138		1235
1139	void	1236	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1237	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1141	SV * out_fh	1238	ALIAS:
1142	SV * in_fh	1239	aio_readlink = EIO_READLINK
1143	UV in_offset	1240	aio_realpath = EIO_REALPATH
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$
1147	PPCODE:	1241	PPCODE:
1148	{	1242	{
		1243	dREQ;
		1244
		1245	req->type = ix;
		1246	req_set_path1 (req, pathname);
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1253	PPCODE:
		1254	{
		1255	int ifd = s_fileno_croak (in_fh , 0);
		1256	int ofd = s_fileno_croak (out_fh, 1);
1149	dREQ;	1257	dREQ;
1150		1258
1151	req->type = REQ_SENDFILE;	1259	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1260	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1261	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	1262	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1263	req->int2 = ifd;
1156	req->offset = in_offset;	1264	req->offs = in_offset;
1157	req->length = length;	1265	req->size = length;
1158		1266
1159	REQ_SEND;	1267	REQ_SEND;
1160	}	1268	}
1161		1269
1162	void	1270	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1271	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$
1169	PPCODE:	1272	PPCODE:
1170	{	1273	{
		1274	int fd = s_fileno_croak (fh, 0);
1171	dREQ;	1275	dREQ;
1172		1276
1173	req->type = REQ_READAHEAD;	1277	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	1278	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1279	req->int1 = fd;
1176	req->offset = offset;	1280	req->offs = offset;
1177	req->length = length;	1281	req->size = length;
1178		1282
1179	REQ_SEND;	1283	REQ_SEND;
1180	}	1284	}
1181		1285
1182	void	1286	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1287	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1288	ALIAS:
1187	aio_stat = REQ_STAT	1289	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	1290	aio_lstat = EIO_LSTAT
		1291	aio_statvfs = EIO_STATVFS
1189	PPCODE:	1292	PPCODE:
1190	{	1293	{
1191	dREQ;	1294	dREQ;
1192		1295
1193	New (0, req->statdata, 1, Stat_t);	1296	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1194	if (!req->statdata)
1195	{
1196	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");
1198	}
1199
1200	if (SvPOK (fh_or_path))
1201	{
1202	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);
1205	}
1206	else
1207	{
1208	req->type = REQ_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}
1212		1297
1213	REQ_SEND;	1298	REQ_SEND;
1214	}	1299	}
1215		1300
		1301	UV
		1302	major (UV dev)
		1303	ALIAS:
		1304	minor = 1
		1305	CODE:
		1306	RETVAL = ix ? major (dev) : minor (dev);
		1307	OUTPUT:
		1308	RETVAL
		1309
		1310	UV
		1311	makedev (UV maj, UV min)
		1312	CODE:
		1313	RETVAL = makedev (maj, min);
		1314	OUTPUT:
		1315	RETVAL
		1316
1216	void	1317	void
		1318	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1324	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1325	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1326
		1327	REQ_SEND;
		1328	}
		1329
		1330	void
		1331	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1332	PPCODE:
		1333	{
		1334	dREQ;
		1335
		1336	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1337	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
		1348	req->int2 = mode;
		1349	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1350
		1351	REQ_SEND;
		1352	}
		1353
		1354	void
		1355	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1361	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1362	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
		1373	req->type = EIO_READDIR;
		1374	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1375
		1376	if (flags & EIO_READDIR_DENTS)
		1377	req->int1 |= EIO_READDIR_CUSTOM2;
		1378
		1379	req_set_path1 (req, pathname);
		1380
		1381	REQ_SEND;
		1382	}
		1383
		1384	void
		1385	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1386	PPCODE:
		1387	{
		1388	dREQ;
		1389
		1390	req->type = EIO_MKDIR;
		1391	req->int2 = mode;
		1392	req_set_path1 (req, pathname);
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1398	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1399	ALIAS:
1221	aio_unlink = REQ_UNLINK	1400	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	1401	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	1402	aio_readdir = EIO_READDIR
1224	PPCODE:	1403	PPCODE:
1225	{	1404	{
1226	dREQ;	1405	dREQ;
1227		1406
1228	req->type = ix;	1407	req->type = ix;
1229	req->data = newSVsv (pathname);	1408	req_set_path1 (req, pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1409
1231
1232	REQ_SEND;	1410	REQ_SEND;
1233	}	1411	}
1234		1412
1235	void	1413	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1414	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1415	ALIAS:
1241	aio_link = REQ_LINK	1416	aio_link = EIO_LINK
1242	aio_symlink = REQ_SYMLINK	1417	aio_symlink = EIO_SYMLINK
1243	aio_rename = REQ_RENAME	1418	aio_rename = EIO_RENAME
1244	PPCODE:	1419	PPCODE:
1245	{	1420	{
		1421	eio_wd wd2 = 0;
1246	dREQ;	1422	dREQ;
1247		1423
1248	req->type = ix;	1424	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1425	req_set_path1 (req, oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1426	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1251	req->data = newSVsv (newpath);	1427	req->int3 = (long)wd2;
1252	req->dataptr = SvPVbyte_nolen (req->data);
1253		1428
1254	REQ_SEND;	1429	REQ_SEND;
1255	}	1430	}
1256		1431
1257	void	1432	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1433	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1434	PPCODE:
1262	{	1435	{
1263	dREQ;	1436	dREQ;
1264		1437
1265	req->type = REQ_SLEEP;	1438	req->type = EIO_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1439	req->int2 = (mode_t)mode;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1440	req->offs = dev;
1268		1441	req_set_path1 (req, pathname);
		1442
1269	REQ_SEND;	1443	REQ_SEND;
1270	}	1444	}
1271		1445
1272	void	1446	void
1273	aio_group (callback=&PL_sv_undef)	1447	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1274	SV * callback	1448	ALIAS:
1275	PROTOTYPE: ;$	1449	aio_mtouch = EIO_MTOUCH
		1450	aio_msync = EIO_MSYNC
1276	PPCODE:	1451	PPCODE:
1277	{	1452	{
		1453	STRLEN svlen;
		1454	char *svptr = SvPVbyte (data, svlen);
		1455	UV len = SvUV (length);
		1456
		1457	if (offset < 0)
		1458	offset += svlen;
		1459
		1460	if (offset < 0 || offset > svlen)
		1461	croak ("offset outside of scalar");
		1462
		1463	if (!SvOK (length) || len + offset > svlen)
		1464	len = svlen - offset;
		1465
		1466	{
		1467	dREQ;
		1468
		1469	req->type = ix;
		1470	req->sv2 = SvREFCNT_inc (data);
		1471	req->ptr2 = (char *)svptr + offset;
		1472	req->size = len;
		1473	req->int1 = flags;
		1474
		1475	REQ_SEND;
		1476	}
		1477	}
		1478
		1479	void
		1480	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1481	PPCODE:
		1482	{
		1483	STRLEN svlen;
		1484	char *svptr = SvPVbyte (data, svlen);
		1485	UV len = SvUV (length);
		1486
		1487	if (offset < 0)
		1488	offset += svlen;
		1489
		1490	if (offset < 0 || offset > svlen)
		1491	croak ("offset outside of scalar");
		1492
		1493	if (!SvOK (length) || len + offset > svlen)
		1494	len = svlen - offset;
		1495
		1496	{
		1497	dREQ;
		1498
		1499	req->type = EIO_MLOCK;
		1500	req->sv2 = SvREFCNT_inc (data);
		1501	req->ptr2 = (char *)svptr + offset;
		1502	req->size = len;
		1503
		1504	REQ_SEND;
		1505	}
		1506	}
		1507
		1508	void
		1509	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1510	PPCODE:
		1511	{
		1512	dREQ;
		1513
		1514	req->type = EIO_MLOCKALL;
		1515	req->int1 = flags;
		1516
		1517	REQ_SEND;
		1518	}
		1519
		1520	void
		1521	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1522	PPCODE:
		1523	{
		1524	int fd = s_fileno_croak (fh, 0);
1278	dREQ;	1525	dREQ;
1279		1526
1280	req->type = REQ_GROUP;	1527	req->type = EIO_CUSTOM;
1281	req_send (req);	1528	req->sv1 = newSVsv (fh);
		1529	req->int1 = fd;
1282		1530
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1531	req->feed = fiemap;
1284	}	1532	#if HAVE_FIEMAP
		1533	/* keep our fingers crossed that the next two types are 64 bit */
		1534	req->offs = start;
		1535	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1536	req->int2 = flags;
		1537	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1538	#endif
1285		1539
		1540	REQ_SEND;
		1541	}
		1542
1286	void	1543	void
1287	aio_nop (callback=&PL_sv_undef)	1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
1288	SV * callback
1289	PPCODE:	1545	PPCODE:
1290	{	1546	{
1291	dREQ;	1547	dREQ;
1292		1548
1293	req->type = REQ_NOP;	1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
1294		1551
1295	REQ_SEND;	1552	REQ_SEND;
1296	}	1553	}
1297		1554
1298	#if 0
1299
1300	void	1555	void
1301	aio_pri (int pri = DEFAULT_PRI)	1556	aio_group (SV *callback=&PL_sv_undef)
		1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_GROUP;
		1562
		1563	req_submit (req);
		1564	XPUSHs (req_sv (req, aio_grp_stash));
		1565	}
		1566
		1567	void
		1568	aio_nop (SV *callback=&PL_sv_undef)
		1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = ix;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	int
		1582	aioreq_pri (int pri = 0)
1302	CODE:	1583	CODE:
		1584	RETVAL = next_pri;
		1585	if (items > 0)
		1586	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1589	next_pri = pri;
		1590	}
		1591	OUTPUT:
		1592	RETVAL
1306		1593
1307	#endif	1594	void
		1595	aioreq_nice (int nice = 0)
		1596	CODE:
		1597	nice = next_pri - nice;
		1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1600	next_pri = nice;
1308		1601
1309	void	1602	void
1310	flush ()	1603	flush ()
1311	PROTOTYPE:
1312	CODE:	1604	CODE:
1313	while (nreqs)	1605	while (eio_nreqs ())
1314	{	1606	{
1315	poll_wait ();	1607	poll_wait ();
1316	poll_cb ();	1608	poll_cb ();
1317	}	1609	}
1318		1610
1319	void	1611	int
1320	poll()	1612	poll ()
1321	PROTOTYPE:
1322	CODE:	1613	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1614	poll_wait ();
1326	poll_cb ();	1615	RETVAL = poll_cb ();
1327	}
1328
1329	int
1330	poll_fileno()
1331	PROTOTYPE:
1332	CODE:
1333	RETVAL = respipe [0];
1334	OUTPUT:	1616	OUTPUT:
1335	RETVAL	1617	RETVAL
1336		1618
1337	int	1619	int
		1620	poll_fileno ()
		1621	CODE:
		1622	RETVAL = s_epipe_fd (&respipe);
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
1338	poll_cb(...)	1627	poll_cb (...)
1339	PROTOTYPE:	1628	PROTOTYPE:
1340	CODE:	1629	CODE:
1341	RETVAL = poll_cb ();	1630	RETVAL = poll_cb ();
1342	OUTPUT:	1631	OUTPUT:
1343	RETVAL	1632	RETVAL
1344		1633
1345	void	1634	void
1346	poll_wait()	1635	poll_wait ()
1347	PROTOTYPE:
1348	CODE:	1636	CODE:
1349	if (nreqs)
1350	poll_wait ();	1637	poll_wait ();
1351		1638
1352	int	1639	int
1353	nreqs()	1640	nreqs ()
1354	PROTOTYPE:
1355	CODE:	1641	CODE:
1356	RETVAL = nreqs;	1642	RETVAL = eio_nreqs ();
1357	OUTPUT:	1643	OUTPUT:
1358	RETVAL	1644	RETVAL
1359		1645
		1646	int
		1647	nready ()
		1648	CODE:
		1649	RETVAL = eio_nready ();
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653	int
		1654	npending ()
		1655	CODE:
		1656	RETVAL = eio_npending ();
		1657	OUTPUT:
		1658	RETVAL
		1659
		1660	int
		1661	nthreads ()
		1662	CODE:
		1663	RETVAL = eio_nthreads ();
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
		1668	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1669	CODE:
		1670	RETVAL = posix_fadvise (fh, offset, length, advice);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	IV
		1675	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1676	CODE:
		1677	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void
		1682	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1683	PPCODE:
		1684	sv_unmagic (scalar, MMAP_MAGIC);
		1685	{
		1686	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1687	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1688	if (addr == (void *)-1)
		1689	XSRETURN_NO;
		1690
		1691	sv_force_normal (scalar);
		1692
		1693	/* we store the length in mg_obj, as namlen is I32 :/ */
		1694	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1695	->mg_obj = (SV *)length;
		1696
		1697	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1698
		1699	if (!(prot & PROT_WRITE))
		1700	SvREADONLY_on (scalar);
		1701
		1702	if (SvLEN (scalar))
		1703	Safefree (SvPVX (scalar));
		1704
		1705	SvPVX (scalar) = (char *)addr;
		1706	SvCUR_set (scalar, length);
		1707	SvLEN_set (scalar, 0);
		1708	SvPOK_only (scalar);
		1709
		1710	XSRETURN_YES;
		1711	}
		1712
		1713	void
		1714	munmap (SV *scalar)
		1715	CODE:
		1716	sv_unmagic (scalar, MMAP_MAGIC);
		1717
		1718	int
		1719	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1720	ALIAS:
		1721	mprotect = 1
		1722	CODE:
		1723	{
		1724	STRLEN svlen;
		1725	void *addr = SvPVbyte (scalar, svlen);
		1726	size_t len = SvUV (length);
		1727
		1728	if (offset < 0)
		1729	offset += svlen;
		1730
		1731	if (offset < 0 || offset > svlen)
		1732	croak ("offset outside of scalar");
		1733
		1734	if (!SvOK (length) || len + offset > svlen)
		1735	len = svlen - offset;
		1736
		1737	addr = (void *)(((intptr_t)addr) + offset);
		1738	eio_page_align (&addr, &len);
		1739
		1740	switch (ix)
		1741	{
		1742	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1743	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1744	}
		1745	}
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	int
		1750	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1751	CODE:
		1752	{
		1753	STRLEN svlen;
		1754	void *addr = SvPVbyte (scalar, svlen);
		1755	size_t len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	addr = (void *)(((intptr_t)addr) + offset);
		1767	eio_page_align (&addr, &len);
		1768	#if _POSIX_MEMLOCK_RANGE
		1769	RETVAL = munlock (addr, len);
		1770	#else
		1771	RETVAL = ((errno = ENOSYS), -1);
		1772	#endif
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlockall ()
		1779	CODE:
		1780	#if _POSIX_MEMLOCK
		1781	munlockall ();
		1782	#else
		1783	RETVAL = -1;
		1784	errno = ENOSYS;
		1785	#endif
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void _on_next_submit (SV *cb)
		1790	CODE:
		1791	SvREFCNT_dec (on_next_submit);
		1792	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1793
1360	PROTOTYPES: DISABLE	1794	PROTOTYPES: DISABLE
1361		1795
		1796	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1797
		1798	BOOT:
		1799	{
		1800	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1801	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1802	}
		1803
		1804	void
		1805	DESTROY (SV *self)
		1806	CODE:
		1807	{
		1808	aio_wd wd = SvAIO_WD (self);
		1809	#if HAVE_AT
		1810	{
		1811	SV *callback = &PL_sv_undef;
		1812	dREQ; /* clobbers next_pri :/ */
		1813	next_pri = req->pri; /* restore next_pri */
		1814	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1815	req->type = EIO_WD_CLOSE;
		1816	req->wd = wd;
		1817	REQ_SEND;
		1818	}
		1819	#else
		1820	eio_wd_close_sync (wd);
		1821	#endif
		1822	}
		1823
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1825
1364	void	1826	void
1365	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1828	CODE:
1368	req_cancel (req);	1829	eio_cancel (req);
1369		1830
1370	void	1831	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1372	CODE:	1833	PPCODE:
		1834	{
		1835	if (GIMME_V != G_VOID)
		1836	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1837
		1838	if (items > 1)
		1839	{
		1840	SV *cb_cv =get_cb (callback);
		1841
1373	SvREFCNT_dec (req->callback);	1842	SvREFCNT_dec (req->callback);
1374	req->callback = newSVsv (callback);	1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
1375		1846
1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1377		1848
1378	void	1849	void
1379	add (aio_req grp, ...)	1850	add (aio_req grp, ...)
1380	PPCODE:	1851	PPCODE:
1381	{	1852	{
1382	int i;	1853	int i;
1383	aio_req req;
1384		1854
1385	if (grp->fd == 2)	1855	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1856	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1857
1388	for (i = 1; i < items; ++i )	1858	for (i = 1; i < items; ++i )
1389	{	1859	{
		1860	aio_req req;
		1861
1390	if (GIMME_V != G_VOID)	1862	if (GIMME_V != G_VOID)
1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1392		1864
1393	req = SvAIO_REQ (ST (i));	1865	req = SvAIO_REQ (ST (i));
1394		1866
1395	if (req)	1867	if (req)
1396	{	1868	eio_grp_add (grp, req);
1397	++grp->length;
1398	req->grp = grp;
1399
1400	req->grp_prev = 0;
1401	req->grp_next = grp->grp_first;
1402
1403	if (grp->grp_first)
1404	grp->grp_first->grp_prev = req;
1405
1406	grp->grp_first = req;
1407	}
1408	}	1869	}
1409	}	1870	}
		1871
		1872	void
		1873	cancel_subs (aio_req_ornot req)
		1874	CODE:
		1875	req_cancel_subs (req);
1410		1876
1411	void	1877	void
1412	result (aio_req grp, ...)	1878	result (aio_req grp, ...)
1413	CODE:	1879	CODE:
1414	{	1880	{
1415	int i;	1881	int i;
		1882	AV *av;
		1883
		1884	grp->errorno = errno;
		1885
1416	AV *av = newAV ();	1886	av = newAV ();
		1887	av_extend (av, items - 1);
1417		1888
1418	for (i = 1; i < items; ++i )	1889	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1890	av_push (av, newSVsv (ST (i)));
1420		1891
1421	SvREFCNT_dec (grp->data);	1892	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1893	grp->sv1 = (SV *)av;
1423	}	1894	}
1424		1895
1425	void	1896	void
		1897	errno (aio_req grp, int errorno = errno)
		1898	CODE:
		1899	grp->errorno = errorno;
		1900
		1901	void
1426	feed_limit (aio_req grp, int limit)	1902	limit (aio_req grp, int limit)
1427	CODE:	1903	CODE:
1428	grp->fd2 = limit;	1904	eio_grp_limit (grp, limit);
1429	aio_grp_feed (grp);
1430		1905
1431	void	1906	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1908	CODE:
1434	{	1909	{
1435	SvREFCNT_dec (grp->fh2);	1910	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
1437		1913
1438	if (grp->fd2 <= 0)	1914	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1915	grp->int2 = 2;
1440		1916
1441	aio_grp_feed (grp);	1917	eio_grp_limit (grp, grp->int2);
1442	}	1918	}
1443		1919

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