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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.234 by root, Thu Jun 25 15:20:11 2015 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
30	# if __linux
31	# include <sys/sendfile.h>
32	# elif __freebsd
33	# include <sys/socket.h>
34	# include <sys/uio.h>	21	# include <sys/mman.h>
35	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
36	# include <sys/socket.h>	85	#include <sys/time.h>
37	# elif __solaris /* not yet */
38	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
39	# else	144	# else
40	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	146	# endif
42	#endif	147	#endif
43		148
44	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
45	#ifndef NAME_MAX	150	#include "def0.h"
46	# define NAME_MAX 4096
47	#endif
48		151
49	#if __ia64	152	#ifndef makedev
50	# define STACKSIZE 65536	153	# define makedev(maj,min) (((maj) << 8) | (min))
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	154	#endif
52	# define STACKSIZE PTHREAD_STACK_MIN	155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
		157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
		161
		162	#if PAGESIZE <= 0
		163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
		165
		166	/*****************************************************************************/
		167
		168	static void
		169	fiemap (eio_req *req)
		170	{
		171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags |= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		187	errno = ENOMEM;
		188	if (!fiemap)
		189	return;
		190
		191	req->ptr1 = fiemap;
		192
		193	fiemap->fm_start = req->offs;
		194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
		197
		198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		199	return;
		200
		201	if (req->int3 >= 0 /* not autosizing */
		202	|| !fiemap->fm_mapped_extents /* no more extents */
		203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		204	goto done;
		205
		206	/* else we have to loop -
		207	* it would be tempting (actually I tried that first) to just query the
		208	* number of extents needed, but linux often feels like not returning all
		209	* extents, without telling us it left any out. this complicates
		210	* this quite a bit.
		211	*/
		212
		213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		214
		215	for (;;)
		216	{
		217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		218	char scratch[3072];
		219	struct fiemap *incmap = (struct fiemap *)scratch;
		220
		221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		224	incmap->fm_flags = fiemap->fm_flags;
		225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		226
		227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		228	return;
		229
		230	if (!incmap->fm_mapped_extents)
		231	goto done;
		232
		233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		235	errno = ENOMEM;
		236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		242	{
		243	struct fiemap_extent *e = incmap->fm_extents + count;
		244
		245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
		253	}
		254	}
		255
		256	done:
		257	req->result = 0;
		258
53	#else	259	#else
54	# define STACKSIZE 16384	260	errno = ENOSYS;
55	#endif	261	#endif
		262	}
56		263
57	/* buffer size for various temporary buffers */	264	/*****************************************************************************/
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		265
67	enum {	266	enum {
68	REQ_QUIT,	267	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	};	268	};
80		269
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;	270	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
115		273
116	enum {	274	static SV *on_next_submit;
117	PRI_MIN = -4,	275	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;	276	static int max_outstanding;
129	static int respipe [2];
130		277
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	278	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		279
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	280	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);	281	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
146		296
147	/* must be called at most once */	297	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
149	{	300	{
150	if (!req->self)	301	if (!req->self)
151	{	302	{
152	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154	}	305	}
155		306
156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157	}	308	}
158		309
159	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
160	{	318	{
161	MAGIC *mg;	319	MAGIC *mg;
162		320
163	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
164	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
165		327
166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167		329
168	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	331	}
170		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static SV *
		345	newmortalFH (int fd, int flags)
		346	{
		347	if (fd < 0)
		348	return &PL_sv_undef;
		349
		350	GV *gv = (GV *)sv_newmortal ();
		351	char sym[64];
		352	int symlen;
		353
		354	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		355	gv_init (gv, aio_stash, sym, symlen, 0);
		356
		357	symlen = snprintf (
		358	sym,
		359	sizeof (sym),
		360	"%s&=%d",
		361	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		362	fd
		363	);
		364
		365	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		366	? (SV *)gv : &PL_sv_undef;
		367	}
		368
		369	static void
171	static void aio_grp_feed (aio_req grp)	370	aio_grp_feed (aio_req grp)
172	{	371	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	372	if (grp->sv2 && SvOK (grp->sv2))
174	{	373	{
175	int old_len = grp->length;	374	dSP;
176		375
177	if (grp->fh2 && SvOK (grp->fh2))	376	ENTER;
		377	SAVETMPS;
		378	PUSHMARK (SP);
		379	XPUSHs (req_sv (grp, aio_grp_stash));
		380	PUTBACK;
		381	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		382	SPAGAIN;
		383	FREETMPS;
		384	LEAVE;
		385	}
		386	}
		387
		388	static void
		389	req_submit (eio_req *req)
		390	{
		391	eio_submit (req);
		392
		393	if (expect_false (on_next_submit))
		394	{
		395	dSP;
		396	SV *cb = sv_2mortal (on_next_submit);
		397
		398	on_next_submit = 0;
		399
		400	PUSHMARK (SP);
		401	PUTBACK;
		402	call_sv (cb, G_DISCARD | G_EVAL);
		403	}
		404	}
		405
		406	static int
		407	req_invoke (eio_req *req)
		408	{
		409	if (req->flags & FLAG_SV2_RO_OFF)
		410	SvREADONLY_off (req->sv2);
		411
		412	if (!EIO_CANCELLED (req) && req->callback)
		413	{
		414	dSP;
		415	static SV *sv_result_cache; /* caches the result integer SV */
		416	SV *sv_result;
		417
		418	ENTER;
		419	SAVETMPS;
		420	PUSHMARK (SP);
		421	EXTEND (SP, 1);
		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
178	{	425	{
179	dSP;	426	sv_result = sv_result_cache; sv_result_cache = 0;
180		427	SvIV_set (sv_result, req->result);
181	ENTER;	428	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	}	429	}
191		430	else
192	/* stop if no progress has been made */
193	if (old_len == grp->length)
194	{	431	{
195	SvREFCNT_dec (grp->fh2);	432	sv_result = newSViv (req->result);
196	grp->fh2 = 0;	433	SvREADONLY_on (sv_result);
197	break;
198	}	434	}
		435
		436	switch (req->type)
		437	{
		438	case EIO_WD_OPEN:
		439	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		440	break;
		441
		442	case EIO_READDIR:
		443	{
		444	SV *rv = &PL_sv_undef;
		445
		446	if (req->result >= 0)
		447	{
		448	int i;
		449	char *names = (char *)req->ptr2;
		450	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		451	AV *av = newAV ();
		452
		453	av_extend (av, req->result - 1);
		454
		455	for (i = 0; i < req->result; ++i)
		456	{
		457	if (req->int1 & EIO_READDIR_DENTS)
		458	{
		459	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		460
		461	if (req->int1 & EIO_READDIR_CUSTOM2)
		462	{
		463	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		464	AV *avent = newAV ();
		465
		466	av_extend (avent, 2);
		467
		468	if (!sv_type [ent->type])
		469	{
		470	sv_type [ent->type] = newSViv (ent->type);
		471	SvREADONLY_on (sv_type [ent->type]);
		472	}
		473
		474	av_store (avent, 0, namesv);
		475	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		476	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		477
		478	av_store (av, i, newRV_noinc ((SV *)avent));
		479	}
		480	else
		481	av_store (av, i, namesv);
		482
		483	++ent;
		484	}
		485	else
		486	{
		487	SV *name = newSVpv (names, 0);
		488	av_store (av, i, name);
		489	names += SvCUR (name) + 1;
		490	}
		491	}
		492
		493	rv = sv_2mortal (newRV_noinc ((SV *)av));
		494	}
		495
		496	PUSHs (rv);
		497
		498	if (req->int1 & EIO_READDIR_CUSTOM1)
		499	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		500	}
		501	break;
		502
		503	case EIO_OPEN:
		504	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		505	break;
		506
		507	case EIO_STATVFS:
		508	case EIO_FSTATVFS:
		509	{
		510	SV *rv = &PL_sv_undef;
		511
		512	#ifndef _WIN32
		513	if (req->result >= 0)
		514	{
		515	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		516	HV *hv = newHV ();
		517	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		518	* chooses to make it a struct.
		519	*/
		520	unsigned long fsid = 0;
		521	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		522
		523	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		524
		525	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		526	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		527	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		528	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		529	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		530	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		531	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		532	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		533	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		534	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		535	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		536	}
		537	#endif
		538
		539	PUSHs (rv);
		540	}
		541
		542	break;
		543
		544	case EIO_GROUP:
		545	req->int1 = 2; /* mark group as finished */
		546
		547	if (req->sv1)
		548	{
		549	int i;
		550	AV *av = (AV *)req->sv1;
		551
		552	EXTEND (SP, AvFILL (av) + 1);
		553	for (i = 0; i <= AvFILL (av); ++i)
		554	PUSHs (*av_fetch (av, i, 0));
		555	}
		556	break;
		557
		558	case EIO_NOP:
		559	case EIO_BUSY:
		560	break;
		561
		562	case EIO_READLINK:
		563	case EIO_REALPATH:
		564	if (req->result > 0)
		565	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		566	break;
		567
		568	case EIO_STAT:
		569	case EIO_LSTAT:
		570	case EIO_FSTAT:
		571	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		572
		573	if (!(PL_laststatval = req->result))
		574	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		575	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		576
		577	PUSHs (sv_result);
		578	break;
		579
		580	case EIO_SEEK:
		581	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		582	break;
		583
		584	case EIO_READ:
		585	{
		586	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		587	*SvEND (req->sv2) = 0;
		588	SvPOK_only (req->sv2);
		589	SvSETMAGIC (req->sv2);
		590	PUSHs (sv_result);
		591	}
		592	break;
		593
		594	case EIO_CUSTOM:
		595	if (req->feed == fiemap)
		596	{
		597	#if HAVE_FIEMAP
		598	if (!req->result)
		599	{
		600	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		601
		602	if (fiemap->fm_extent_count)
		603	{
		604	AV *av = newAV ();
		605	int i;
		606
		607	while (fiemap->fm_mapped_extents)
		608	{
		609	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		610	AV *ext_av = newAV ();
		611
		612	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		613	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		614	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		615	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		616
		617	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		618	}
		619
		620	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		621	}
		622	else
		623	{
		624	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		625	PUSHs (sv_result);
		626	}
		627	}
		628	#endif
		629	}
		630	else
		631	PUSHs (sv_result);
		632	break;
		633
		634	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		635	if (req->result > 0)
		636	SvIV_set (sv_result, 0);
		637	/* FALLTHROUGH */
		638
		639	default:
		640	PUSHs (sv_result);
		641	break;
		642	}
		643
		644	errno = req->errorno;
		645
		646	PUTBACK;
		647	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		648	SPAGAIN;
		649
		650	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		651	SvREFCNT_dec (sv_result);
		652	else
		653	sv_result_cache = sv_result;
		654
		655	FREETMPS;
		656	LEAVE;
		657
		658	PUTBACK;
199	}	659	}
200	}
201		660
202	static void aio_grp_dec (aio_req grp)	661	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	}	662	}
216		663
217	static void poll_wait ()	664	static void
		665	req_destroy (aio_req req)
218	{	666	{
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)	667	if (req->self)
358	{	668	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	669	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	670	SvREFCNT_dec (req->self);
361	}	671	}
362		672
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	673	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	674	SvREFCNT_dec (req->sv2);
		675	SvREFCNT_dec (req->sv3);
		676	SvREFCNT_dec (req->sv4);
366	SvREFCNT_dec (req->callback);	677	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368		678
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371
372	Safefree (req);	679	free (req);
373	}	680	}
374		681
375	static void req_cancel (aio_req req)	682	static void
		683	req_cancel_subs (aio_req grp)
376	{	684	{
377	req->flags |= FLAG_CANCELLED;
378
379	if (req->type == REQ_GROUP)	685	if (grp->type != EIO_GROUP)
		686	return;
		687
		688	SvREFCNT_dec (grp->sv2);
		689	grp->sv2 = 0;
		690
		691	eio_grp_cancel (grp);
		692	}
		693
		694	static void ecb_cold
		695	create_respipe (void)
		696	{
		697	if (s_epipe_renew (&respipe))
		698	croak ("IO::AIO: unable to initialize result pipe");
		699	}
		700
		701	static void
		702	poll_wait (void)
		703	{
		704	while (eio_nreqs ())
380	{	705	{
381	aio_req sub;	706	int size;
382		707
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	708	X_LOCK (reslock);
384	req_cancel (sub);	709	size = res_queue.size;
		710	X_UNLOCK (reslock);
		711
		712	if (size)
		713	return;
		714
		715	etp_maybe_start_thread ();
		716
		717	s_epipe_wait (&respipe);
385	}	718	}
386	}	719	}
387		720
388	static int poll_cb ()	721	static int
		722	poll_cb (void)
389	{	723	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	724	for (;;)
396	{	725	{
397	pthread_mutex_lock (&reslock);	726	int res = eio_poll ();
398	req = ress;
399		727
400	if (req)	728	if (res > 0)
		729	croak (0);
		730
		731	if (!max_outstanding || max_outstanding > eio_nreqs ())
		732	return res;
		733
		734	poll_wait ();
		735	}
		736	}
		737
		738	static void ecb_cold
		739	reinit (void)
		740	{
		741	create_respipe ();
		742
		743	if (eio_init (want_poll, done_poll) < 0)
		744	croak ("IO::AIO: unable to initialise eio library");
		745	}
		746
		747	/*****************************************************************************/
		748
		749	#if !_POSIX_MAPPED_FILES
		750	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		751	# define munmap(addr,length) EIO_ENOSYS ()
		752	#endif
		753
		754	#if !_POSIX_MEMORY_PROTECTION
		755	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		756	# define PROT_NONE 0
		757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
		761	#endif
		762
		763	#define MMAP_MAGIC PERL_MAGIC_ext
		764
		765	static int ecb_cold
		766	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	int old_errno = errno;
		769	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		770	errno = old_errno;
		771
		772	mg->mg_obj = 0; /* just in case */
		773
		774	SvREADONLY_off (sv);
		775
		776	if (SvPVX (sv) != mg->mg_ptr)
		777	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		778
		779	SvCUR_set (sv, 0);
		780	SvPVX (sv) = 0;
		781	SvOK_off (sv);
		782
		783	return 0;
		784	}
		785
		786	static MGVTBL mmap_vtbl = {
		787	0, 0, 0, 0, mmap_free
		788	};
		789
		790	/*****************************************************************************/
		791
		792	static SV *
		793	get_cb (SV *cb_sv)
		794	{
		795	SvGETMAGIC (cb_sv);
		796	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		797	}
		798
		799	static aio_req ecb_noinline
		800	dreq (SV *callback)
		801	{
		802	SV *cb_cv;
		803	aio_req req;
		804	int req_pri = next_pri;
		805	next_pri = EIO_PRI_DEFAULT;
		806
		807	cb_cv = get_cb (callback);
		808
		809	req = calloc (sizeof (*req), 1);
		810	if (!req)
		811	croak ("out of memory during eio_req allocation");
		812
		813	req->callback = SvREFCNT_inc (cb_cv);
		814	req->pri = req_pri;
		815
		816	return req;
		817	}
		818
		819	#define dREQ \
		820	aio_req req = dreq (callback); \
		821
		822	#define REQ_SEND \
		823	PUTBACK; \
		824	req_submit (req); \
		825	SPAGAIN; \
		826	\
		827	if (GIMME_V != G_VOID) \
		828	XPUSHs (req_sv (req, aio_req_stash));
		829
		830	ecb_inline void
		831	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		832	{
		833	if (expect_false (SvROK (path)))
		834	{
		835	SV *rv = SvRV (path);
		836	SV *wdob;
		837
		838	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
401	{	839	{
402	ress = req->next;	840	path = AvARRAY (rv)[1];
		841	wdob = AvARRAY (rv)[0];
403		842
404	if (!ress)	843	if (SvOK (wdob))
405	{	844	{
406	/* read any signals sent by the worker threads */	845	*wd = SvAIO_WD (wdob);
407	char buf [32];	846	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}	847	}
		848	else
		849	*wd = EIO_INVALID_WD;
413	}	850	}
414		851	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	{	852	{
426	req->fd = 1; /* mark request as delayed */	853	*wd = (aio_wd)(long)SvIVX (rv);
427	continue;	854	*wdsv = SvREFCNT_inc_NN (rv);
		855	*ptr = ".";
		856	return; /* path set to "." */
428	}	857	}
429	else	858	else
430	{	859	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	}	860	}
451		861
452	return count;	862	*pathsv = newSVsv (path);
		863	*ptr = SvPVbyte_nolen (*pathsv);
453	}	864	}
454		865
455	static void *aio_proc(void *arg);	866	static void ecb_noinline
456		867	req_set_path1 (aio_req req, SV *path)
457	static void start_thread (void)
458	{	868	{
459	sigset_t fullsigset, oldsigset;	869	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	}	870	}
475		871
476	static void req_send (aio_req req)	872	static void ecb_noinline
		873	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
477	{	874	{
478	while (started < wanted && nreqs >= started)	875	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
479	start_thread ();
480		876
481	++nreqs;	877	switch (SvTYPE (rv))
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{	878	{
489	reqe->next = req;	879	case SVt_PVIO:
490	reqe = req;	880	case SVt_PVLV:
		881	case SVt_PVGV:
		882	req->type = type_fh;
		883	req->sv1 = newSVsv (fh_or_path);
		884	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		885	break;
		886
		887	default:
		888	req->type = type_path;
		889	req_set_path1 (req, fh_or_path);
		890	break;
491	}	891	}
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	}	892	}
509		893
510	static void end_thread (void)	894	XS(boot_IO__AIO) ecb_cold;
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515		895
516	req_send (req);	896	MODULE = IO::AIO PACKAGE = IO::AIO
517	}
518		897
519	static void min_parallel (int nthreads)	898	PROTOTYPES: ENABLE
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524		899
525	static void max_parallel (int nthreads)	900	BOOT:
526	{	901	{
527	int cur = started;	902	static const struct {
		903	const char *name;
		904	IV iv;
		905	} *civ, const_iv[] = {
		906	# define const_niv(name, value) { # name, (IV) value },
		907	# define const_iv(name) { # name, (IV) name },
		908	# define const_eio(name) { # name, (IV) EIO_ ## name },
528		909
529	if (wanted > nthreads)	910	/* you have to re-run ./gendef0 after adding/Removing any constants here */
530	wanted = nthreads;
531		911
532	while (cur > wanted)	912	const_iv (ENOSYS)
533	{	913	const_iv (EXDEV)
534	end_thread ();	914	const_iv (EBADR)
535	cur--;
536	}
537		915
538	while (started > wanted)	916	const_iv (O_RDONLY)
539	{	917	const_iv (O_WRONLY)
540	poll_wait ();	918	const_iv (O_RDWR)
541	poll_cb ();	919	const_iv (O_CREAT)
542	}	920	const_iv (O_TRUNC)
543	}	921	const_iv (O_EXCL)
		922	const_iv (O_APPEND)
544		923
545	static void create_pipe ()	924	const_iv (O_ASYNC)
546	{	925	const_iv (O_DIRECT)
547	if (pipe (respipe))	926	const_iv (O_NOATIME)
548	croak ("unable to initialize result pipe");
549		927
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	928	const_iv (O_CLOEXEC)
551	croak ("cannot set result pipe to nonblocking mode");	929	const_iv (O_NOCTTY)
		930	const_iv (O_NOFOLLOW)
		931	const_iv (O_NONBLOCK)
		932	const_iv (O_EXEC)
		933	const_iv (O_SEARCH)
		934	const_iv (O_DIRECTORY)
		935	const_iv (O_DSYNC)
		936	const_iv (O_RSYNC)
		937	const_iv (O_SYNC)
		938	const_iv (O_PATH)
		939	const_iv (O_TMPFILE)
		940	const_iv (O_TTY_INIT)
552		941
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	942	const_iv (S_IFIFO)
554	croak ("cannot set result pipe to nonblocking mode");	943	const_iv (S_IFCHR)
555	}	944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
556		951
557	/*****************************************************************************/	952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
558	/* work around various missing functions */	953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
559		958
560	#if !HAVE_PREADWRITE	959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
561	# define pread aio_pread	960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
562	# define pwrite aio_pwrite	961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
563		964
564	/*	965	const_iv (ST_RDONLY)
565	* make our pread/pwrite safe against themselves, but not against	966	const_iv (ST_NOSUID)
566	* normal read/write by using a mutex. slows down execution a lot,	967	const_iv (ST_NODEV)
567	* but that's your problem, not mine.	968	const_iv (ST_NOEXEC)
568	*/	969	const_iv (ST_SYNCHRONOUS)
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
570		977
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	978	const_iv (PROT_NONE)
572	{	979	const_iv (PROT_EXEC)
573	ssize_t res;	980	const_iv (PROT_READ)
574	off_t ooffset;	981	const_iv (PROT_WRITE)
575		982
576	pthread_mutex_lock (&preadwritelock);	983	/*const_iv (MAP_FIXED)*/
577	ooffset = lseek (fd, 0, SEEK_CUR);	984	const_iv (MAP_PRIVATE)
578	lseek (fd, offset, SEEK_SET);	985	const_iv (MAP_SHARED)
579	res = read (fd, buf, count);	986	const_iv (MAP_ANONYMOUS)
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582		987
583	return res;	988	/* linuxish */
584	}	989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
585		994
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	995	const_iv (FIEMAP_FLAG_SYNC)
587	{	996	const_iv (FIEMAP_FLAG_XATTR)
588	ssize_t res;	997	const_iv (FIEMAP_FLAGS_COMPAT)
589	off_t ooffset;	998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
590		1009
591	pthread_mutex_lock (&preadwritelock);	1010	const_iv (SPLICE_F_MOVE)
592	ooffset = lseek (fd, 0, SEEK_CUR);	1011	const_iv (SPLICE_F_NONBLOCK)
593	lseek (fd, offset, SEEK_SET);	1012	const_iv (SPLICE_F_MORE)
594	res = write (fd, buf, count);	1013	const_iv (SPLICE_F_GIFT)
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597		1014
598	return res;	1015	const_iv (SEEK_DATA)
599	}	1016	const_iv (SEEK_HOLE)
600	#endif
601		1017
602	#if !HAVE_FDATASYNC	1018	/* libeio constants */
603	# define fdatasync fsync	1019	const_eio (SEEK_SET)
604	#endif	1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
605		1022
606	#if !HAVE_READAHEAD	1023	const_eio (MCL_FUTURE)
607	# define readahead aio_readahead	1024	const_eio (MCL_CURRENT)
608		1025
609	static ssize_t readahead (int fd, off_t offset, size_t count)	1026	const_eio (MS_ASYNC)
610	{	1027	const_eio (MS_INVALIDATE)
611	dBUF;	1028	const_eio (MS_SYNC)
612		1029
613	while (count > 0)	1030	const_eio (MT_MODIFY)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616		1031
617	pread (fd, aio_buf, len, offset);	1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
618	offset += len;	1033	const_eio (SYNC_FILE_RANGE_WRITE)
619	count -= len;	1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
620	}
621		1035
622	fBUF;	1036	const_eio (FALLOC_FL_KEEP_SIZE)
		1037	const_eio (FALLOC_FL_PUNCH_HOLE)
		1038	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1039	const_eio (FALLOC_FL_ZERO_RANGE)
623		1040
624	errno = 0;	1041	const_eio (READDIR_DENTS)
625	}	1042	const_eio (READDIR_DIRS_FIRST)
626	#endif	1043	const_eio (READDIR_STAT_ORDER)
		1044	const_eio (READDIR_FOUND_UNKNOWN)
627		1045
628	#if !HAVE_READDIR_R	1046	const_eio (DT_UNKNOWN)
629	# define readdir_r aio_readdir_r	1047	const_eio (DT_FIFO)
630		1048	const_eio (DT_CHR)
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1049	const_eio (DT_DIR)
632		1050	const_eio (DT_BLK)
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1051	const_eio (DT_REG)
634	{	1052	const_eio (DT_LNK)
635	struct dirent *e;	1053	const_eio (DT_SOCK)
636	int errorno;	1054	const_eio (DT_WHT)
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	}	1055	};
683		1056
684	# elif __hpux	1057	aio_stash = gv_stashpv ("IO::AIO" , 1);
685	res = sendfile (ofd, ifd, offset, count, 0, 0);	1058	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1059	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1060	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
686		1061
687	# elif __solaris	1062	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
688	{	1063	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
689	struct sendfilevec vec;
690	size_t sbytes;
691		1064
692	vec.sfv_fd = ifd;	1065	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
693	vec.sfv_flag = 0;
694	vec.sfv_off = offset;
695	vec.sfv_len = count;
696		1066
697	res = sendfilev (ofd, &vec, 1, &sbytes);	1067	reinit ();
		1068	}
698		1069
699	if (res < 0 && sbytes)	1070	void
		1071	reinit ()
		1072	PROTOTYPE:
		1073
		1074	void
		1075	max_poll_reqs (unsigned int nreqs)
		1076	PROTOTYPE: $
		1077	CODE:
		1078	eio_set_max_poll_reqs (nreqs);
		1079
		1080	void
		1081	max_poll_time (double nseconds)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_max_poll_time (nseconds);
		1085
		1086	void
		1087	min_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_min_parallel (nthreads);
		1091
		1092	void
		1093	max_parallel (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_parallel (nthreads);
		1097
		1098	void
		1099	max_idle (unsigned int nthreads)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_max_idle (nthreads);
		1103
		1104	void
		1105	idle_timeout (unsigned int seconds)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	eio_set_idle_timeout (seconds);
		1109
		1110	void
		1111	max_outstanding (unsigned int maxreqs)
		1112	PROTOTYPE: $
		1113	CODE:
		1114	max_outstanding = maxreqs;
		1115
		1116	void
		1117	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	dREQ;
		1121
		1122	req->type = EIO_WD_OPEN;
		1123	req_set_path1 (req, pathname);
		1124
		1125	REQ_SEND;
		1126	}
		1127
		1128	void
		1129	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1130	PPCODE:
		1131	{
		1132	dREQ;
		1133
		1134	req->type = EIO_OPEN;
		1135	req_set_path1 (req, pathname);
		1136	req->int1 = flags;
		1137	req->int2 = mode;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1144	ALIAS:
		1145	aio_fsync = EIO_FSYNC
		1146	aio_fdatasync = EIO_FDATASYNC
		1147	aio_syncfs = EIO_SYNCFS
		1148	PPCODE:
		1149	{
		1150	int fd = s_fileno_croak (fh, 0);
		1151	dREQ;
		1152
		1153	req->type = ix;
		1154	req->sv1 = newSVsv (fh);
		1155	req->int1 = fd;
		1156
		1157	REQ_SEND;
		1158	}
		1159
		1160	void
		1161	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	int fd = s_fileno_croak (fh, 0);
		1165	dREQ;
		1166
		1167	req->type = EIO_SYNC_FILE_RANGE;
		1168	req->sv1 = newSVsv (fh);
		1169	req->int1 = fd;
		1170	req->offs = offset;
700	res = sbytes;	1171	req->size = nbytes;
701	}	1172	req->int2 = flags;
702		1173
703	# endif	1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_FALLOCATE;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->int2 = mode;
		1188	req->offs = offset;
		1189	req->size = len;
		1190
		1191	REQ_SEND;
		1192	}
		1193
		1194	void
		1195	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1196	PPCODE:
		1197	{
		1198	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1199	int fd = s_fileno_croak (fh, 0);
		1200	dREQ;
		1201
		1202	if (expect_false (close_fd < 0))
		1203	{
		1204	int pipefd [2];
		1205
		1206	if (
		1207	#ifdef _WIN32
		1208	_pipe (pipefd, 1, _O_BINARY) < 0
704	#else	1209	#else
705	res = -1;	1210	pipe (pipefd) < 0
706	errno = ENOSYS;	1211	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
707	#endif	1212	#endif
708		1213	|| 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	{	1214	)
730	if (cnt && !res) res = -1;	1215	abort (); /*D*/
731	break;
732	}
733		1216
734	cnt = write (ofd, aio_buf, cnt);	1217	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	}	1218	}
804	}
805		1219
806	errorno = errno;	1220	req->type = EIO_DUP2;
807	free (u);	1221	req->int1 = close_fd;
808	closedir (dirp);	1222	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;	1223	req->int2 = fd;
903		1224
904	if (rese)	1225	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	}	1226	}
923		1227
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	1228	void
1018	min_parallel (nthreads)	1229	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:	1230	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: $$$;$
1042	PPCODE:
1043	{	1231	{
		1232	int fd = s_fileno_croak (fh, 0);
1044	dREQ;	1233	dREQ;
1045		1234
1046	req->type = REQ_OPEN;	1235	req->type = EIO_SEEK;
1047	req->data = newSVsv (pathname);	1236	req->sv1 = newSVsv (fh);
1048	req->dataptr = SvPVbyte_nolen (req->data);	1237	req->int1 = fd;
1049	req->fd = flags;	1238	req->offs = SvVAL64 (offset);
1050	req->mode = mode;	1239	req->int2 = whence;
1051		1240
1052	REQ_SEND;	1241	REQ_SEND;
1053	}	1242	}
1054		1243
1055	void	1244	void
1056	aio_close (fh,callback=&PL_sv_undef)	1245	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$
1060	ALIAS:	1246	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC
1064	PPCODE:
1065	{
1066	dREQ;
1067
1068	req->type = ix;
1069	req->fh = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071
1072	REQ_SEND (req);
1073	}
1074
1075	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:
1084	aio_read = REQ_READ	1247	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	1248	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$
1087	PPCODE:	1249	PPCODE:
1088	{	1250	{
1089	aio_req req;
1090	STRLEN svlen;	1251	STRLEN svlen;
		1252	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	1253	char *svptr = SvPVbyte (data, svlen);
1092		1254	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		1255
1096	if (dataoffset < 0)	1256	if (dataoffset < 0)
1097	dataoffset += svlen;	1257	dataoffset += svlen;
1098		1258
1099	if (dataoffset < 0 || dataoffset > svlen)	1259	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	1260	croak ("dataoffset outside of data scalar");
1101		1261
1102	if (ix == REQ_WRITE)	1262	if (ix == EIO_WRITE)
1103	{	1263	{
1104	/* write: check length and adjust. */	1264	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	1265	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	1266	len = svlen - dataoffset;
1107	}	1267	}
1108	else	1268	else
1109	{	1269	{
1110	/* read: grow scalar as necessary */	1270	/* read: check type and grow scalar as necessary */
		1271	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1111	svptr = SvGROW (data, length + dataoffset);	1272	svptr = sv_grow (data, len + dataoffset + 1);
		1273	else if (SvCUR (data) < len + dataoffset)
		1274	croak ("length + dataoffset outside of scalar, and cannot grow");
1112	}	1275	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		1276
1117	{	1277	{
1118	dREQ;	1278	dREQ;
1119		1279
1120	req->type = ix;	1280	req->type = ix;
1121	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1282	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	1284	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	1285	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	1286	req->ptr2 = (char *)svptr + dataoffset;
		1287	req->stroffset = dataoffset;
1128		1288
1129	if (!SvREADONLY (data))	1289	if (!SvREADONLY (data))
1130	{	1290	{
1131	SvREADONLY_on (data);	1291	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	1292	req->flags |= FLAG_SV2_RO_OFF;
1133	}	1293	}
1134		1294
1135	REQ_SEND;	1295	REQ_SEND;
1136	}	1296	}
1137	}	1297	}
1138		1298
1139	void	1299	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1300	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1141	SV * out_fh	1301	ALIAS:
1142	SV * in_fh	1302	aio_readlink = EIO_READLINK
1143	UV in_offset	1303	aio_realpath = EIO_REALPATH
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$
1147	PPCODE:	1304	PPCODE:
1148	{	1305	{
		1306	dREQ;
		1307
		1308	req->type = ix;
		1309	req_set_path1 (req, pathname);
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
		1315	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	int ifd = s_fileno_croak (in_fh , 0);
		1319	int ofd = s_fileno_croak (out_fh, 1);
1149	dREQ;	1320	dREQ;
1150		1321
1151	req->type = REQ_SENDFILE;	1322	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1323	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1324	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	1325	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1326	req->int2 = ifd;
1156	req->offset = in_offset;	1327	req->offs = in_offset;
1157	req->length = length;	1328	req->size = length;
1158		1329
1159	REQ_SEND;	1330	REQ_SEND;
1160	}	1331	}
1161		1332
1162	void	1333	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1334	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$
1169	PPCODE:	1335	PPCODE:
1170	{	1336	{
		1337	int fd = s_fileno_croak (fh, 0);
1171	dREQ;	1338	dREQ;
1172		1339
1173	req->type = REQ_READAHEAD;	1340	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	1341	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1342	req->int1 = fd;
1176	req->offset = offset;	1343	req->offs = offset;
1177	req->length = length;	1344	req->size = length;
1178		1345
1179	REQ_SEND;	1346	REQ_SEND;
1180	}	1347	}
1181		1348
1182	void	1349	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1350	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1351	ALIAS:
1187	aio_stat = REQ_STAT	1352	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	1353	aio_lstat = EIO_LSTAT
		1354	aio_statvfs = EIO_STATVFS
1189	PPCODE:	1355	PPCODE:
1190	{	1356	{
1191	dREQ;	1357	dREQ;
1192		1358
1193	New (0, req->statdata, 1, Stat_t);	1359	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		1360
1213	REQ_SEND;	1361	REQ_SEND;
1214	}	1362	}
1215		1363
		1364	UV
		1365	major (UV dev)
		1366	ALIAS:
		1367	minor = 1
		1368	CODE:
		1369	RETVAL = ix ? major (dev) : minor (dev);
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	UV
		1374	makedev (UV maj, UV min)
		1375	CODE:
		1376	RETVAL = makedev (maj, min);
		1377	OUTPUT:
		1378	RETVAL
		1379
1216	void	1380	void
		1381	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1387	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1388	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1400	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = mode;
		1412	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
		1418	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1419	PPCODE:
		1420	{
		1421	dREQ;
		1422
		1423	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1424	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1425	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1426
		1427	REQ_SEND;
		1428	}
		1429
		1430	void
		1431	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	dREQ;
		1435
		1436	req->type = EIO_READDIR;
		1437	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1438
		1439	if (flags & EIO_READDIR_DENTS)
		1440	req->int1 |= EIO_READDIR_CUSTOM2;
		1441
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MKDIR;
		1454	req->int2 = mode;
		1455	req_set_path1 (req, pathname);
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1461	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1462	ALIAS:
1221	aio_unlink = REQ_UNLINK	1463	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	1464	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	1465	aio_readdir = EIO_READDIR
1224	PPCODE:	1466	PPCODE:
1225	{	1467	{
1226	dREQ;	1468	dREQ;
1227		1469
1228	req->type = ix;	1470	req->type = ix;
1229	req->data = newSVsv (pathname);	1471	req_set_path1 (req, pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1472
1231
1232	REQ_SEND;	1473	REQ_SEND;
1233	}	1474	}
1234		1475
1235	void	1476	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1477	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1478	ALIAS:
1241	aio_link = REQ_LINK	1479	aio_link = EIO_LINK
1242	aio_symlink = REQ_SYMLINK	1480	aio_symlink = EIO_SYMLINK
1243	aio_rename = REQ_RENAME	1481	aio_rename = EIO_RENAME
1244	PPCODE:	1482	PPCODE:
1245	{	1483	{
		1484	eio_wd wd2 = 0;
1246	dREQ;	1485	dREQ;
1247		1486
1248	req->type = ix;	1487	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1488	req_set_path1 (req, oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1489	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1251	req->data = newSVsv (newpath);	1490	req->int3 = (long)wd2;
1252	req->dataptr = SvPVbyte_nolen (req->data);
1253		1491
1254	REQ_SEND;	1492	REQ_SEND;
1255	}	1493	}
1256		1494
1257	void	1495	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1496	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1497	PPCODE:
1262	{	1498	{
1263	dREQ;	1499	dREQ;
1264		1500
1265	req->type = REQ_SLEEP;	1501	req->type = EIO_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1502	req->int2 = (mode_t)mode;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1503	req->offs = dev;
1268		1504	req_set_path1 (req, pathname);
		1505
1269	REQ_SEND;	1506	REQ_SEND;
1270	}	1507	}
1271		1508
1272	void	1509	void
1273	aio_group (callback=&PL_sv_undef)	1510	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1274	SV * callback	1511	ALIAS:
1275	PROTOTYPE: ;$	1512	aio_mtouch = EIO_MTOUCH
		1513	aio_msync = EIO_MSYNC
1276	PPCODE:	1514	PPCODE:
1277	{	1515	{
		1516	STRLEN svlen;
		1517	char *svptr = SvPVbyte (data, svlen);
		1518	UV len = SvUV (length);
		1519
		1520	if (offset < 0)
		1521	offset += svlen;
		1522
		1523	if (offset < 0 || offset > svlen)
		1524	croak ("offset outside of scalar");
		1525
		1526	if (!SvOK (length) || len + offset > svlen)
		1527	len = svlen - offset;
		1528
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533	req->sv2 = SvREFCNT_inc (data);
		1534	req->ptr2 = (char *)svptr + offset;
		1535	req->size = len;
		1536	req->int1 = flags;
		1537
		1538	REQ_SEND;
		1539	}
		1540	}
		1541
		1542	void
		1543	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	STRLEN svlen;
		1547	char *svptr = SvPVbyte (data, svlen);
		1548	UV len = SvUV (length);
		1549
		1550	if (offset < 0)
		1551	offset += svlen;
		1552
		1553	if (offset < 0 || offset > svlen)
		1554	croak ("offset outside of scalar");
		1555
		1556	if (!SvOK (length) || len + offset > svlen)
		1557	len = svlen - offset;
		1558
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MLOCK;
		1563	req->sv2 = SvREFCNT_inc (data);
		1564	req->ptr2 = (char *)svptr + offset;
		1565	req->size = len;
		1566
		1567	REQ_SEND;
		1568	}
		1569	}
		1570
		1571	void
		1572	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->type = EIO_MLOCKALL;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
1278	dREQ;	1588	dREQ;
1279		1589
1280	req->type = REQ_GROUP;	1590	req->type = EIO_CUSTOM;
1281	req_send (req);	1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
1282		1593
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1594	req->feed = fiemap;
1284	}	1595	#if HAVE_FIEMAP
		1596	/* keep our fingers crossed that the next two types are 64 bit */
		1597	req->offs = start;
		1598	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1599	req->int2 = flags;
		1600	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1601	#endif
1285		1602
		1603	REQ_SEND;
		1604	}
		1605
1286	void	1606	void
1287	aio_nop (callback=&PL_sv_undef)	1607	aio_busy (double delay, SV *callback = &PL_sv_undef)
1288	SV * callback
1289	PPCODE:	1608	PPCODE:
1290	{	1609	{
1291	dREQ;	1610	dREQ;
1292		1611
1293	req->type = REQ_NOP;	1612	req->type = EIO_BUSY;
		1613	req->nv1 = delay < 0. ? 0. : delay;
1294		1614
1295	REQ_SEND;	1615	REQ_SEND;
1296	}	1616	}
1297		1617
1298	#if 0
1299
1300	void	1618	void
1301	aio_pri (int pri = DEFAULT_PRI)	1619	aio_group (SV *callback = &PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->type = EIO_GROUP;
		1625
		1626	PUTBACK;
		1627	req_submit (req);
		1628	SPAGAIN;
		1629
		1630	XPUSHs (req_sv (req, aio_grp_stash));
		1631	}
		1632
		1633	void
		1634	aio_nop (SV *callback = &PL_sv_undef)
		1635	ALIAS:
		1636	aio_nop = EIO_NOP
		1637	aio_sync = EIO_SYNC
		1638	PPCODE:
		1639	{
		1640	dREQ;
		1641
		1642	req->type = ix;
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	int
		1648	aioreq_pri (int pri = NO_INIT)
1302	CODE:	1649	CODE:
		1650	RETVAL = next_pri;
		1651	if (items > 0)
		1652	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1653	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1654	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1655	next_pri = pri;
		1656	}
		1657	OUTPUT:
		1658	RETVAL
1306		1659
1307	#endif	1660	void
		1661	aioreq_nice (int nice = 0)
		1662	CODE:
		1663	nice = next_pri - nice;
		1664	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1665	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1666	next_pri = nice;
1308		1667
1309	void	1668	void
1310	flush ()	1669	flush ()
1311	PROTOTYPE:
1312	CODE:	1670	CODE:
1313	while (nreqs)	1671	while (eio_nreqs ())
1314	{	1672	{
1315	poll_wait ();	1673	poll_wait ();
1316	poll_cb ();	1674	poll_cb ();
1317	}	1675	}
1318		1676
1319	void	1677	int
1320	poll()	1678	poll ()
1321	PROTOTYPE:
1322	CODE:	1679	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1680	poll_wait ();
1326	poll_cb ();	1681	RETVAL = poll_cb ();
1327	}
1328
1329	int
1330	poll_fileno()
1331	PROTOTYPE:
1332	CODE:
1333	RETVAL = respipe [0];
1334	OUTPUT:	1682	OUTPUT:
1335	RETVAL	1683	RETVAL
1336		1684
1337	int	1685	int
		1686	poll_fileno ()
		1687	CODE:
		1688	RETVAL = s_epipe_fd (&respipe);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
1338	poll_cb(...)	1693	poll_cb (...)
1339	PROTOTYPE:	1694	PROTOTYPE:
1340	CODE:	1695	CODE:
1341	RETVAL = poll_cb ();	1696	RETVAL = poll_cb ();
1342	OUTPUT:	1697	OUTPUT:
1343	RETVAL	1698	RETVAL
1344		1699
1345	void	1700	void
1346	poll_wait()	1701	poll_wait ()
1347	PROTOTYPE:
1348	CODE:	1702	CODE:
1349	if (nreqs)
1350	poll_wait ();	1703	poll_wait ();
1351		1704
1352	int	1705	int
1353	nreqs()	1706	nreqs ()
1354	PROTOTYPE:
1355	CODE:	1707	CODE:
1356	RETVAL = nreqs;	1708	RETVAL = eio_nreqs ();
1357	OUTPUT:	1709	OUTPUT:
1358	RETVAL	1710	RETVAL
1359		1711
		1712	int
		1713	nready ()
		1714	CODE:
		1715	RETVAL = eio_nready ();
		1716	OUTPUT:
		1717	RETVAL
		1718
		1719	int
		1720	npending ()
		1721	CODE:
		1722	RETVAL = eio_npending ();
		1723	OUTPUT:
		1724	RETVAL
		1725
		1726	int
		1727	nthreads ()
		1728	CODE:
		1729	RETVAL = eio_nthreads ();
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1735	CODE:
		1736	RETVAL = posix_fadvise (fh, offset, length, advice);
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1742	CODE:
		1743	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	void
		1748	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1749	PPCODE:
		1750	sv_unmagic (scalar, MMAP_MAGIC);
		1751	{
		1752	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1753	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1754	if (addr == (void *)-1)
		1755	XSRETURN_NO;
		1756
		1757	sv_force_normal (scalar);
		1758
		1759	/* we store the length in mg_obj, as namlen is I32 :/ */
		1760	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1761	->mg_obj = (SV *)length;
		1762
		1763	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1764
		1765	if (!(prot & PROT_WRITE))
		1766	SvREADONLY_on (scalar);
		1767
		1768	if (SvLEN (scalar))
		1769	Safefree (SvPVX (scalar));
		1770
		1771	SvPVX (scalar) = (char *)addr;
		1772	SvCUR_set (scalar, length);
		1773	SvLEN_set (scalar, 0);
		1774	SvPOK_only (scalar);
		1775
		1776	XSRETURN_YES;
		1777	}
		1778
		1779	void
		1780	munmap (SV *scalar)
		1781	CODE:
		1782	sv_unmagic (scalar, MMAP_MAGIC);
		1783
		1784	int
		1785	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1786	ALIAS:
		1787	mprotect = 1
		1788	CODE:
		1789	{
		1790	STRLEN svlen;
		1791	void *addr = SvPVbyte (scalar, svlen);
		1792	STRLEN len = SvUV (length);
		1793
		1794	if (offset < 0)
		1795	offset += svlen;
		1796
		1797	if (offset < 0 || offset > svlen)
		1798	croak ("offset outside of scalar");
		1799
		1800	if (!SvOK (length) || len + offset > svlen)
		1801	len = svlen - offset;
		1802
		1803	addr = (void *)(((intptr_t)addr) + offset);
		1804	eio_page_align (&addr, &len);
		1805
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1809	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1810	}
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1817	CODE:
		1818	{
		1819	STRLEN svlen;
		1820	void *addr = SvPVbyte (scalar, svlen);
		1821	size_t len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 || offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) || len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	addr = (void *)(((intptr_t)addr) + offset);
		1833	eio_page_align (&addr, &len);
		1834	#if _POSIX_MEMLOCK_RANGE
		1835	RETVAL = munlock (addr, len);
		1836	#else
		1837	RETVAL = EIO_ENOSYS ();
		1838	#endif
		1839	}
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	munlockall ()
		1845	CODE:
		1846	#if _POSIX_MEMLOCK
		1847	munlockall ();
		1848	#else
		1849	RETVAL = EIO_ENOSYS ();
		1850	#endif
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1856	CODE:
		1857	{
		1858	#if HAVE_LINUX_SPLICE
		1859	loff_t off_in_, off_out_;
		1860	RETVAL = splice (
		1861	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1862	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1863	length, flags
		1864	);
		1865	#else
		1866	RETVAL = EIO_ENOSYS ();
		1867	#endif
		1868	}
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	int
		1873	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1874	CODE:
		1875	#if HAVE_LINUX_SPLICE
		1876	RETVAL = tee (rfh, wfh, length, flags);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	pipesize (aio_rfd rfh, int new_size = -1)
		1885	PROTOTYPE: $;$
		1886	CODE:
		1887	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1888	if (new_size >= 0)
		1889	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1890	else
		1891	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1892	#else
		1893	errno = ENOSYS;
		1894	RETVAL = -1;
		1895	#endif
		1896	OUTPUT:
		1897	RETVAL
		1898
		1899	void
		1900	pipe2 (int flags = 0)
		1901	PROTOTYPE: ;$
		1902	PPCODE:
		1903	{
		1904	int fd[2];
		1905	int res;
		1906
		1907	if (flags)
		1908	#if HAVE_PIPE2
		1909	res = pipe2 (fd, flags);
		1910	#else
		1911	res = (errno = ENOSYS, -1);
		1912	#endif
		1913	else
		1914	res = pipe (fd);
		1915
		1916	if (!res)
		1917	{
		1918	EXTEND (SP, 2);
		1919	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1920	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1921	}
		1922	}
		1923
		1924	void _on_next_submit (SV *cb)
		1925	CODE:
		1926	SvREFCNT_dec (on_next_submit);
		1927	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1928
1360	PROTOTYPES: DISABLE	1929	PROTOTYPES: DISABLE
		1930
		1931	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1932
		1933	BOOT:
		1934	{
		1935	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1936	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1937	}
		1938
		1939	void
		1940	DESTROY (SV *self)
		1941	CODE:
		1942	{
		1943	aio_wd wd = SvAIO_WD (self);
		1944	#if HAVE_AT
		1945	{
		1946	SV *callback = &PL_sv_undef;
		1947	dREQ; /* clobbers next_pri :/ */
		1948	next_pri = req->pri; /* restore next_pri */
		1949	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1950	req->type = EIO_WD_CLOSE;
		1951	req->wd = wd;
		1952	REQ_SEND;
		1953	}
		1954	#else
		1955	eio_wd_close_sync (wd);
		1956	#endif
		1957	}
1361		1958
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1959	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1960
1364	void	1961	void
1365	cancel (aio_req_ornot req)	1962	cancel (aio_req_ornot req)
1366	CODE:	1963	CODE:
1367	req_cancel (req);	1964	eio_cancel (req);
1368		1965
1369	void	1966	void
1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1967	cb (aio_req_ornot req, SV *callback = NO_INIT)
1371	CODE:	1968	PPCODE:
		1969	{
		1970	if (GIMME_V != G_VOID)
		1971	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1972
		1973	if (items > 1)
		1974	{
		1975	SV *cb_cv = get_cb (callback);
		1976
1372	SvREFCNT_dec (req->callback);	1977	SvREFCNT_dec (req->callback);
1373	req->callback = newSVsv (callback);	1978	req->callback = SvREFCNT_inc (cb_cv);
		1979	}
		1980	}
1374		1981
1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1982	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376		1983
1377	void	1984	void
1378	add (aio_req grp, ...)	1985	add (aio_req grp, ...)
1379	PPCODE:	1986	PPCODE:
1380	{	1987	{
1381	int i;	1988	int i;
1382	aio_req req;
1383		1989
1384	if (grp->fd == 2)	1990	if (grp->int1 == 2)
1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1991	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386		1992
1387	for (i = 1; i < items; ++i )	1993	for (i = 1; i < items; ++i )
1388	{	1994	{
		1995	aio_req req;
		1996
1389	if (GIMME_V != G_VOID)	1997	if (GIMME_V != G_VOID)
1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1998	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391		1999
1392	req = SvAIO_REQ (ST (i));	2000	req = SvAIO_REQ (ST (i));
1393		2001
1394	if (req)	2002	if (req)
1395	{	2003	eio_grp_add (grp, req);
1396	++grp->length;
1397	req->grp = grp;
1398
1399	req->grp_prev = 0;
1400	req->grp_next = grp->grp_first;
1401
1402	if (grp->grp_first)
1403	grp->grp_first->grp_prev = req;
1404
1405	grp->grp_first = req;
1406	}
1407	}	2004	}
1408	}	2005	}
		2006
		2007	void
		2008	cancel_subs (aio_req_ornot req)
		2009	CODE:
		2010	req_cancel_subs (req);
1409		2011
1410	void	2012	void
1411	result (aio_req grp, ...)	2013	result (aio_req grp, ...)
1412	CODE:	2014	CODE:
1413	{	2015	{
1414	int i;	2016	int i;
		2017	AV *av;
		2018
		2019	grp->errorno = errno;
		2020
1415	AV *av = newAV ();	2021	av = newAV ();
		2022	av_extend (av, items - 1);
1416		2023
1417	for (i = 1; i < items; ++i )	2024	for (i = 1; i < items; ++i )
1418	av_push (av, newSVsv (ST (i)));	2025	av_push (av, newSVsv (ST (i)));
1419		2026
1420	SvREFCNT_dec (grp->data);	2027	SvREFCNT_dec (grp->sv1);
1421	grp->data = (SV *)av;	2028	grp->sv1 = (SV *)av;
1422	}	2029	}
1423		2030
1424	void	2031	void
		2032	errno (aio_req grp, int errorno = errno)
		2033	CODE:
		2034	grp->errorno = errorno;
		2035
		2036	void
1425	feed_limit (aio_req grp, int limit)	2037	limit (aio_req grp, int limit)
1426	CODE:	2038	CODE:
1427	grp->fd2 = limit;	2039	eio_grp_limit (grp, limit);
1428	aio_grp_feed (grp);
1429		2040
1430	void	2041	void
1431	feed (aio_req grp, SV *callback=&PL_sv_undef)	2042	feed (aio_req grp, SV *callback = &PL_sv_undef)
1432	CODE:	2043	CODE:
1433	{	2044	{
1434	SvREFCNT_dec (grp->fh2);	2045	SvREFCNT_dec (grp->sv2);
1435	grp->fh2 = newSVsv (callback);	2046	grp->sv2 = newSVsv (callback);
		2047	grp->feed = aio_grp_feed;
1436		2048
1437	if (grp->fd2 <= 0)	2049	if (grp->int2 <= 0)
1438	grp->fd2 = 2;	2050	grp->int2 = 2;
1439		2051
1440	aio_grp_feed (grp);	2052	eio_grp_limit (grp, grp->int2);
1441	}	2053	}
1442		2054

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